--- /dev/null
+#
+# Copyright (C) 2006-2009 OpenWrt.org
+#
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+#
+
+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=libnl-tiny
+PKG_VERSION:=0.1
+PKG_RELEASE:=1
+
+include $(INCLUDE_DIR)/package.mk
+
+define Package/libnl-tiny
+ SECTION:=libs
+ CATEGORY:=Libraries
+ TITLE:=netlink socket library
+endef
+
+define Package/libnl-tiny/description
+ This package contains a stripped down version of libnl
+endef
+
+define Build/Prepare
+ mkdir -p $(PKG_BUILD_DIR)
+ $(CP) ./src/* $(PKG_BUILD_DIR)/
+endef
+
+TARGET_CFLAGS += $(FPIC)
+
+define Build/Compile
+ $(MAKE) -C $(PKG_BUILD_DIR) \
+ $(TARGET_CONFIGURE_OPTS) \
+ CFLAGS="$(TARGET_CFLAGS)" \
+ all
+endef
+
+define Build/InstallDev
+ $(INSTALL_DIR) $(1)/usr/lib/pkgconfig $(1)/usr/include/libnl-tiny
+ $(CP) $(PKG_BUILD_DIR)/include/* $(1)/usr/include/libnl-tiny
+ $(CP) $(PKG_BUILD_DIR)/libnl-tiny.so $(1)/usr/lib/
+ $(CP) ./files/libnl-tiny.pc $(1)/usr/lib/pkgconfig
+endef
+
+define Package/libnl-tiny/install
+ $(INSTALL_DIR) $(1)/usr/lib
+ $(CP) $(PKG_BUILD_DIR)/libnl-tiny.so $(1)/usr/lib/
+endef
+
+$(eval $(call BuildPackage,libnl-tiny))
--- /dev/null
+prefix=/usr
+exec_prefix=/usr
+libdir=${exec_prefix}/lib
+includedir=${prefix}/include/libnl-tiny
+
+Name: libnl-tiny
+Description: Convenience library for netlink sockets
+Version: 2.0
+Libs: -L${libdir} -lnl-tiny
+Cflags:
--- /dev/null
+CC=gcc
+WFLAGS=-Wall
+CFLAGS=-O2
+INCLUDES=-Iinclude
+
+LIBNAME=libnl-tiny.so
+
+all: $(LIBNAME)
+
+%.o: %.c
+ $(CC) $(WFLAGS) -c -o $@ $(INCLUDES) $(CFLAGS) $<
+
+LIBNL_OBJ=nl.o handlers.o msg.o attr.o cache.o cache_mngt.o object.o socket.o error.o
+GENL_OBJ=genl.o genl_family.o genl_ctrl.o genl_mngt.o
+
+$(LIBNAME): $(LIBNL_OBJ) $(GENL_OBJ)
+ $(CC) -shared -o $@ $^
--- /dev/null
+/*
+ * lib/attr.c Netlink Attributes
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation version 2.1
+ * of the License.
+ *
+ * Copyright (c) 2003-2008 Thomas Graf <tgraf@suug.ch>
+ */
+
+#include <netlink-local.h>
+#include <netlink/netlink.h>
+#include <netlink/utils.h>
+#include <netlink/addr.h>
+#include <netlink/attr.h>
+#include <netlink/msg.h>
+#include <linux/socket.h>
+
+/**
+ * @ingroup msg
+ * @defgroup attr Attributes
+ * Netlink Attributes Construction/Parsing Interface
+ *
+ * \section attr_sec Netlink Attributes
+ * Netlink attributes allow for data chunks of arbitary length to be
+ * attached to a netlink message. Each attribute is encoded with a
+ * type and length field, both 16 bits, stored in the attribute header
+ * preceding the attribute data. The main advantage of using attributes
+ * over packing everything into the family header is that the interface
+ * stays extendable as new attributes can supersede old attributes while
+ * remaining backwards compatible. Also attributes can be defined optional
+ * thus avoiding the transmission of unnecessary empty data blocks.
+ * Special nested attributes allow for more complex data structures to
+ * be transmitted, e.g. trees, lists, etc.
+ *
+ * While not required, netlink attributes typically follow the family
+ * header of a netlink message and must be properly aligned to NLA_ALIGNTO:
+ * @code
+ * +----------------+- - -+---------------+- - -+------------+- - -+
+ * | Netlink Header | Pad | Family Header | Pad | Attributes | Pad |
+ * +----------------+- - -+---------------+- - -+------------+- - -+
+ * @endcode
+ *
+ * The actual attributes are chained together each separately aligned to
+ * NLA_ALIGNTO. The position of an attribute is defined based on the
+ * length field of the preceding attributes:
+ * @code
+ * +-------------+- - -+-------------+- - -+------
+ * | Attribute 1 | Pad | Attribute 2 | Pad | ...
+ * +-------------+- - -+-------------+- - -+------
+ * nla_next(attr1)------^
+ * @endcode
+ *
+ * The attribute itself consists of the attribute header followed by
+ * the actual payload also aligned to NLA_ALIGNTO. The function nla_data()
+ * returns a pointer to the start of the payload while nla_len() returns
+ * the length of the payload in bytes.
+ *
+ * \b Note: Be aware, NLA_ALIGNTO equals to 4 bytes, therefore it is not
+ * safe to dereference any 64 bit data types directly.
+ *
+ * @code
+ * <----------- nla_total_size(payload) ----------->
+ * <-------- nla_attr_size(payload) --------->
+ * +------------------+- - -+- - - - - - - - - +- - -+
+ * | Attribute Header | Pad | Payload | Pad |
+ * +------------------+- - -+- - - - - - - - - +- - -+
+ * nla_data(nla)-------------^
+ * <- nla_len(nla) ->
+ * @endcode
+ *
+ * @subsection attr_datatypes Attribute Data Types
+ * A number of basic data types are supported to simplify access and
+ * validation of netlink attributes. This data type information is
+ * not encoded in the attribute, both the kernel and userspace part
+ * are required to share this information on their own.
+ *
+ * One of the major advantages of these basic types is the automatic
+ * validation of each attribute based on an attribute policy. The
+ * validation covers most of the checks required to safely use
+ * attributes and thus keeps the individual sanity check to a minimum.
+ *
+ * Never access attribute payload without ensuring basic validation
+ * first, attributes may:
+ * - not be present even though required
+ * - contain less actual payload than expected
+ * - fake a attribute length which exceeds the end of the message
+ * - contain unterminated character strings
+ *
+ * Policies are defined as array of the struct nla_policy. The array is
+ * indexed with the attribute type, therefore the array must be sized
+ * accordingly.
+ * @code
+ * static struct nla_policy my_policy[ATTR_MAX+1] = {
+ * [ATTR_FOO] = { .type = ..., .minlen = ..., .maxlen = ... },
+ * };
+ *
+ * err = nla_validate(attrs, attrlen, ATTR_MAX, &my_policy);
+ * @endcode
+ *
+ * Some basic validations are performed on every attribute, regardless of type.
+ * - If the attribute type exceeds the maximum attribute type specified or
+ * the attribute type is lesser-or-equal than zero, the attribute will
+ * be silently ignored.
+ * - If the payload length falls below the \a minlen value the attribute
+ * will be rejected.
+ * - If \a maxlen is non-zero and the payload length exceeds the \a maxlen
+ * value the attribute will be rejected.
+ *
+ *
+ * @par Unspecific Attribute (NLA_UNSPEC)
+ * This is the standard type if no type is specified. It is used for
+ * binary data of arbitary length. Typically this attribute carries
+ * a binary structure or a stream of bytes.
+ * @par
+ * @code
+ * // In this example, we will assume a binary structure requires to
+ * // be transmitted. The definition of the structure will typically
+ * // go into a header file available to both the kernel and userspace
+ * // side.
+ * //
+ * // Note: Be careful when putting 64 bit data types into a structure.
+ * // The attribute payload is only aligned to 4 bytes, dereferencing
+ * // the member may fail.
+ * struct my_struct {
+ * int a;
+ * int b;
+ * };
+ *
+ * // The validation function will not enforce an exact length match to
+ * // allow structures to grow as required. Note: While it is allowed
+ * // to add members to the end of the structure, changing the order or
+ * // inserting members in the middle of the structure will break your
+ * // binary interface.
+ * static struct nla_policy my_policy[ATTR_MAX+1] = {
+ * [ATTR_MY_STRICT] = { .type = NLA_UNSPEC,
+ * .minlen = sizeof(struct my_struct) },
+ *
+ * // The binary structure is appened to the message using nla_put()
+ * struct my_struct foo = { .a = 1, .b = 2 };
+ * nla_put(msg, ATTR_MY_STRUCT, sizeof(foo), &foo);
+ *
+ * // On the receiving side, a pointer to the structure pointing inside
+ * // the message payload is returned by nla_get().
+ * if (attrs[ATTR_MY_STRUCT])
+ * struct my_struct *foo = nla_get(attrs[ATTR_MY_STRUCT]);
+ * @endcode
+ *
+ * @par Integers (NLA_U8, NLA_U16, NLA_U32, NLA_U64)
+ * Integers come in different sizes from 8 bit to 64 bit. However, since the
+ * payload length is aligned to 4 bytes, integers smaller than 32 bit are
+ * only useful to enforce the maximum range of values.
+ * @par
+ * \b Note: There is no difference made between signed and unsigned integers.
+ * The validation only enforces the minimal payload length required to store
+ * an integer of specified type.
+ * @par
+ * @code
+ * // Even though possible, it does not make sense to specify .minlen or
+ * // .maxlen for integer types. The data types implies the corresponding
+ * // minimal payload length.
+ * static struct nla_policy my_policy[ATTR_MAX+1] = {
+ * [ATTR_FOO] = { .type = NLA_U32 },
+ *
+ * // Numeric values can be appended directly using the respective
+ * // nla_put_uxxx() function
+ * nla_put_u32(msg, ATTR_FOO, 123);
+ *
+ * // Same for the receiving side.
+ * if (attrs[ATTR_FOO])
+ * uint32_t foo = nla_get_u32(attrs[ATTR_FOO]);
+ * @endcode
+ *
+ * @par Character string (NLA_STRING)
+ * This data type represents a NUL terminated character string of variable
+ * length. For binary data streams the type NLA_UNSPEC is recommended.
+ * @par
+ * @code
+ * // Enforce a NUL terminated character string of at most 4 characters
+ * // including the NUL termination.
+ * static struct nla_policy my_policy[ATTR_MAX+1] = {
+ * [ATTR_BAR] = { .type = NLA_STRING, maxlen = 4 },
+ *
+ * // nla_put_string() creates a string attribute of the necessary length
+ * // and appends it to the message including the NUL termination.
+ * nla_put_string(msg, ATTR_BAR, "some text");
+ *
+ * // It is safe to use the returned character string directly if the
+ * // attribute has been validated as the validation enforces the proper
+ * // termination of the string.
+ * if (attrs[ATTR_BAR])
+ * char *text = nla_get_string(attrs[ATTR_BAR]);
+ * @endcode
+ *
+ * @par Flag (NLA_FLAG)
+ * This attribute type may be used to indicate the presence of a flag. The
+ * attribute is only valid if the payload length is zero. The presence of
+ * the attribute header indicates the presence of the flag.
+ * @par
+ * @code
+ * // This attribute type is special as .minlen and .maxlen have no effect.
+ * static struct nla_policy my_policy[ATTR_MAX+1] = {
+ * [ATTR_FLAG] = { .type = NLA_FLAG },
+ *
+ * // nla_put_flag() appends a zero sized attribute to the message.
+ * nla_put_flag(msg, ATTR_FLAG);
+ *
+ * // There is no need for a receival function, the presence is the value.
+ * if (attrs[ATTR_FLAG])
+ * // flag is present
+ * @endcode
+ *
+ * @par Micro Seconds (NLA_MSECS)
+ *
+ * @par Nested Attribute (NLA_NESTED)
+ * Attributes can be nested and put into a container to create groups, lists
+ * or to construct trees of attributes. Nested attributes are often used to
+ * pass attributes to a subsystem where the top layer has no knowledge of the
+ * configuration possibilities of each subsystem.
+ * @par
+ * \b Note: When validating the attributes using nlmsg_validate() or
+ * nlmsg_parse() it will only affect the top level attributes. Each
+ * level of nested attributes must be validated seperately using
+ * nla_parse_nested() or nla_validate().
+ * @par
+ * @code
+ * // The minimal length policy may be used to enforce the presence of at
+ * // least one attribute.
+ * static struct nla_policy my_policy[ATTR_MAX+1] = {
+ * [ATTR_OPTS] = { .type = NLA_NESTED, minlen = NLA_HDRLEN },
+ *
+ * // Nested attributes are constructed by enclosing the attributes
+ * // to be nested with calls to nla_nest_start() respetively nla_nest_end().
+ * struct nlattr *opts = nla_nest_start(msg, ATTR_OPTS);
+ * nla_put_u32(msg, ATTR_FOO, 123);
+ * nla_put_string(msg, ATTR_BAR, "some text");
+ * nla_nest_end(msg, opts);
+ *
+ * // Various methods exist to parse nested attributes, the easiest being
+ * // nla_parse_nested() which also allows validation in the same step.
+ * if (attrs[ATTR_OPTS]) {
+ * struct nlattr *nested[ATTR_MAX+1];
+ *
+ * nla_parse_nested(nested, ATTR_MAX, attrs[ATTR_OPTS], &policy);
+ *
+ * if (nested[ATTR_FOO])
+ * uint32_t foo = nla_get_u32(nested[ATTR_FOO]);
+ * }
+ * @endcode
+ *
+ * @subsection attr_exceptions Exception Based Attribute Construction
+ * Often a large number of attributes are added to a message in a single
+ * function. In order to simplify error handling, a second set of
+ * construction functions exist which jump to a error label when they
+ * fail instead of returning an error code. This second set consists
+ * of macros which are named after their error code based counterpart
+ * except that the name is written all uppercase.
+ *
+ * All of the macros jump to the target \c nla_put_failure if they fail.
+ * @code
+ * void my_func(struct nl_msg *msg)
+ * {
+ * NLA_PUT_U32(msg, ATTR_FOO, 10);
+ * NLA_PUT_STRING(msg, ATTR_BAR, "bar");
+ *
+ * return 0;
+ *
+ * nla_put_failure:
+ * return -NLE_NOMEM;
+ * }
+ * @endcode
+ *
+ * @subsection attr_examples Examples
+ * @par Example 1.1 Constructing a netlink message with attributes.
+ * @code
+ * struct nl_msg *build_msg(int ifindex, struct nl_addr *lladdr, int mtu)
+ * {
+ * struct nl_msg *msg;
+ * struct nlattr *info, *vlan;
+ * struct ifinfomsg ifi = {
+ * .ifi_family = AF_INET,
+ * .ifi_index = ifindex,
+ * };
+ *
+ * // Allocate a new netlink message, type=RTM_SETLINK, flags=NLM_F_ECHO
+ * if (!(msg = nlmsg_alloc_simple(RTM_SETLINK, NLM_F_ECHO)))
+ * return NULL;
+ *
+ * // Append the family specific header (struct ifinfomsg)
+ * if (nlmsg_append(msg, &ifi, sizeof(ifi), NLMSG_ALIGNTO) < 0)
+ * goto nla_put_failure
+ *
+ * // Append a 32 bit integer attribute to carry the MTU
+ * NLA_PUT_U32(msg, IFLA_MTU, mtu);
+ *
+ * // Append a unspecific attribute to carry the link layer address
+ * NLA_PUT_ADDR(msg, IFLA_ADDRESS, lladdr);
+ *
+ * // Append a container for nested attributes to carry link information
+ * if (!(info = nla_nest_start(msg, IFLA_LINKINFO)))
+ * goto nla_put_failure;
+ *
+ * // Put a string attribute into the container
+ * NLA_PUT_STRING(msg, IFLA_INFO_KIND, "vlan");
+ *
+ * // Append another container inside the open container to carry
+ * // vlan specific attributes
+ * if (!(vlan = nla_nest_start(msg, IFLA_INFO_DATA)))
+ * goto nla_put_failure;
+ *
+ * // add vlan specific info attributes here...
+ *
+ * // Finish nesting the vlan attributes and close the second container.
+ * nla_nest_end(msg, vlan);
+ *
+ * // Finish nesting the link info attribute and close the first container.
+ * nla_nest_end(msg, info);
+ *
+ * return msg;
+ *
+ * // If any of the construction macros fails, we end up here.
+ * nla_put_failure:
+ * nlmsg_free(msg);
+ * return NULL;
+ * }
+ * @endcode
+ *
+ * @par Example 2.1 Parsing a netlink message with attributes.
+ * @code
+ * int parse_message(struct nl_msg *msg)
+ * {
+ * // The policy defines two attributes: a 32 bit integer and a container
+ * // for nested attributes.
+ * struct nla_policy attr_policy[ATTR_MAX+1] = {
+ * [ATTR_FOO] = { .type = NLA_U32 },
+ * [ATTR_BAR] = { .type = NLA_NESTED },
+ * };
+ * struct nlattr *attrs[ATTR_MAX+1];
+ * int err;
+ *
+ * // The nlmsg_parse() function will make sure that the message contains
+ * // enough payload to hold the header (struct my_hdr), validates any
+ * // attributes attached to the messages and stores a pointer to each
+ * // attribute in the attrs[] array accessable by attribute type.
+ * if ((err = nlmsg_parse(nlmsg_hdr(msg), sizeof(struct my_hdr), attrs,
+ * ATTR_MAX, attr_policy)) < 0)
+ * goto errout;
+ *
+ * if (attrs[ATTR_FOO]) {
+ * // It is safe to directly access the attribute payload without
+ * // any further checks since nlmsg_parse() enforced the policy.
+ * uint32_t foo = nla_get_u32(attrs[ATTR_FOO]);
+ * }
+ *
+ * if (attrs[ATTR_BAR]) {
+ * struct nlattr *nested[NESTED_MAX+1];
+ *
+ * // Attributes nested in a container can be parsed the same way
+ * // as top level attributes.
+ * if ((err = nla_parse_nested(nested, NESTED_MAX, attrs[ATTR_BAR],
+ * nested_policy)) < 0)
+ * goto errout;
+ *
+ * // Process nested attributes here.
+ * }
+ *
+ * err = 0;
+ * errout:
+ * return err;
+ * }
+ * @endcode
+ *
+ * @{
+ */
+
+/**
+ * @name Attribute Size Calculation
+ * @{
+ */
+
+/** @} */
+
+/**
+ * @name Parsing Attributes
+ * @{
+ */
+
+/**
+ * Check if the attribute header and payload can be accessed safely.
+ * @arg nla Attribute of any kind.
+ * @arg remaining Number of bytes remaining in attribute stream.
+ *
+ * Verifies that the header and payload do not exceed the number of
+ * bytes left in the attribute stream. This function must be called
+ * before access the attribute header or payload when iterating over
+ * the attribute stream using nla_next().
+ *
+ * @return True if the attribute can be accessed safely, false otherwise.
+ */
+int nla_ok(const struct nlattr *nla, int remaining)
+{
+ return remaining >= sizeof(*nla) &&
+ nla->nla_len >= sizeof(*nla) &&
+ nla->nla_len <= remaining;
+}
+
+/**
+ * Return next attribute in a stream of attributes.
+ * @arg nla Attribute of any kind.
+ * @arg remaining Variable to count remaining bytes in stream.
+ *
+ * Calculates the offset to the next attribute based on the attribute
+ * given. The attribute provided is assumed to be accessible, the
+ * caller is responsible to use nla_ok() beforehand. The offset (length
+ * of specified attribute including padding) is then subtracted from
+ * the remaining bytes variable and a pointer to the next attribute is
+ * returned.
+ *
+ * nla_next() can be called as long as remainig is >0.
+ *
+ * @return Pointer to next attribute.
+ */
+struct nlattr *nla_next(const struct nlattr *nla, int *remaining)
+{
+ int totlen = NLA_ALIGN(nla->nla_len);
+
+ *remaining -= totlen;
+ return (struct nlattr *) ((char *) nla + totlen);
+}
+
+static uint16_t nla_attr_minlen[NLA_TYPE_MAX+1] = {
+ [NLA_U8] = sizeof(uint8_t),
+ [NLA_U16] = sizeof(uint16_t),
+ [NLA_U32] = sizeof(uint32_t),
+ [NLA_U64] = sizeof(uint64_t),
+ [NLA_STRING] = 1,
+};
+
+static int validate_nla(struct nlattr *nla, int maxtype,
+ struct nla_policy *policy)
+{
+ struct nla_policy *pt;
+ int minlen = 0, type = nla_type(nla);
+
+ if (type <= 0 || type > maxtype)
+ return 0;
+
+ pt = &policy[type];
+
+ if (pt->type > NLA_TYPE_MAX)
+ BUG();
+
+ if (pt->minlen)
+ minlen = pt->minlen;
+ else if (pt->type != NLA_UNSPEC)
+ minlen = nla_attr_minlen[pt->type];
+
+ if (pt->type == NLA_FLAG && nla_len(nla) > 0)
+ return -NLE_RANGE;
+
+ if (nla_len(nla) < minlen)
+ return -NLE_RANGE;
+
+ if (pt->maxlen && nla_len(nla) > pt->maxlen)
+ return -NLE_RANGE;
+
+ if (pt->type == NLA_STRING) {
+ char *data = nla_data(nla);
+ if (data[nla_len(nla) - 1] != '\0')
+ return -NLE_INVAL;
+ }
+
+ return 0;
+}
+
+
+/**
+ * Create attribute index based on a stream of attributes.
+ * @arg tb Index array to be filled (maxtype+1 elements).
+ * @arg maxtype Maximum attribute type expected and accepted.
+ * @arg head Head of attribute stream.
+ * @arg len Length of attribute stream.
+ * @arg policy Attribute validation policy.
+ *
+ * Iterates over the stream of attributes and stores a pointer to each
+ * attribute in the index array using the attribute type as index to
+ * the array. Attribute with a type greater than the maximum type
+ * specified will be silently ignored in order to maintain backwards
+ * compatibility. If \a policy is not NULL, the attribute will be
+ * validated using the specified policy.
+ *
+ * @see nla_validate
+ * @return 0 on success or a negative error code.
+ */
+int nla_parse(struct nlattr *tb[], int maxtype, struct nlattr *head, int len,
+ struct nla_policy *policy)
+{
+ struct nlattr *nla;
+ int rem, err;
+
+ memset(tb, 0, sizeof(struct nlattr *) * (maxtype + 1));
+
+ nla_for_each_attr(nla, head, len, rem) {
+ int type = nla_type(nla);
+
+ if (type == 0) {
+ fprintf(stderr, "Illegal nla->nla_type == 0\n");
+ continue;
+ }
+
+ if (type <= maxtype) {
+ if (policy) {
+ err = validate_nla(nla, maxtype, policy);
+ if (err < 0)
+ goto errout;
+ }
+
+ tb[type] = nla;
+ }
+ }
+
+ if (rem > 0)
+ fprintf(stderr, "netlink: %d bytes leftover after parsing "
+ "attributes.\n", rem);
+
+ err = 0;
+errout:
+ return err;
+}
+
+/**
+ * Validate a stream of attributes.
+ * @arg head Head of attributes stream.
+ * @arg len Length of attributes stream.
+ * @arg maxtype Maximum attribute type expected and accepted.
+ * @arg policy Validation policy.
+ *
+ * Iterates over the stream of attributes and validates each attribute
+ * one by one using the specified policy. Attributes with a type greater
+ * than the maximum type specified will be silently ignored in order to
+ * maintain backwards compatibility.
+ *
+ * See \ref attr_datatypes for more details on what kind of validation
+ * checks are performed on each attribute data type.
+ *
+ * @return 0 on success or a negative error code.
+ */
+int nla_validate(struct nlattr *head, int len, int maxtype,
+ struct nla_policy *policy)
+{
+ struct nlattr *nla;
+ int rem, err;
+
+ nla_for_each_attr(nla, head, len, rem) {
+ err = validate_nla(nla, maxtype, policy);
+ if (err < 0)
+ goto errout;
+ }
+
+ err = 0;
+errout:
+ return err;
+}
+
+/**
+ * Find a single attribute in a stream of attributes.
+ * @arg head Head of attributes stream.
+ * @arg len Length of attributes stream.
+ * @arg attrtype Attribute type to look for.
+ *
+ * Iterates over the stream of attributes and compares each type with
+ * the type specified. Returns the first attribute which matches the
+ * type.
+ *
+ * @return Pointer to attribute found or NULL.
+ */
+struct nlattr *nla_find(struct nlattr *head, int len, int attrtype)
+{
+ struct nlattr *nla;
+ int rem;
+
+ nla_for_each_attr(nla, head, len, rem)
+ if (nla_type(nla) == attrtype)
+ return nla;
+
+ return NULL;
+}
+
+/** @} */
+
+/**
+ * @name Unspecific Attribute
+ * @{
+ */
+
+/**
+ * Reserve space for a attribute.
+ * @arg msg Netlink Message.
+ * @arg attrtype Attribute Type.
+ * @arg attrlen Length of payload.
+ *
+ * Reserves room for a attribute in the specified netlink message and
+ * fills in the attribute header (type, length). Returns NULL if there
+ * is unsuficient space for the attribute.
+ *
+ * Any padding between payload and the start of the next attribute is
+ * zeroed out.
+ *
+ * @return Pointer to start of attribute or NULL on failure.
+ */
+struct nlattr *nla_reserve(struct nl_msg *msg, int attrtype, int attrlen)
+{
+ struct nlattr *nla;
+ int tlen;
+
+ tlen = NLMSG_ALIGN(msg->nm_nlh->nlmsg_len) + nla_total_size(attrlen);
+
+ if ((tlen + msg->nm_nlh->nlmsg_len) > msg->nm_size)
+ return NULL;
+
+ nla = (struct nlattr *) nlmsg_tail(msg->nm_nlh);
+ nla->nla_type = attrtype;
+ nla->nla_len = nla_attr_size(attrlen);
+
+ memset((unsigned char *) nla + nla->nla_len, 0, nla_padlen(attrlen));
+ msg->nm_nlh->nlmsg_len = tlen;
+
+ NL_DBG(2, "msg %p: Reserved %d bytes at offset +%td for attr %d "
+ "nlmsg_len=%d\n", msg, attrlen,
+ (void *) nla - nlmsg_data(msg->nm_nlh),
+ attrtype, msg->nm_nlh->nlmsg_len);
+
+ return nla;
+}
+
+/**
+ * Add a unspecific attribute to netlink message.
+ * @arg msg Netlink message.
+ * @arg attrtype Attribute type.
+ * @arg datalen Length of data to be used as payload.
+ * @arg data Pointer to data to be used as attribute payload.
+ *
+ * Reserves room for a unspecific attribute and copies the provided data
+ * into the message as payload of the attribute. Returns an error if there
+ * is insufficient space for the attribute.
+ *
+ * @see nla_reserve
+ * @return 0 on success or a negative error code.
+ */
+int nla_put(struct nl_msg *msg, int attrtype, int datalen, const void *data)
+{
+ struct nlattr *nla;
+
+ nla = nla_reserve(msg, attrtype, datalen);
+ if (!nla)
+ return -NLE_NOMEM;
+
+ memcpy(nla_data(nla), data, datalen);
+ NL_DBG(2, "msg %p: Wrote %d bytes at offset +%td for attr %d\n",
+ msg, datalen, (void *) nla - nlmsg_data(msg->nm_nlh), attrtype);
+
+ return 0;
+}
+
+
+
+/** @} */
--- /dev/null
+/*
+ * lib/cache.c Caching Module
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation version 2.1
+ * of the License.
+ *
+ * Copyright (c) 2003-2008 Thomas Graf <tgraf@suug.ch>
+ */
+
+/**
+ * @ingroup cache_mngt
+ * @defgroup cache Cache
+ *
+ * @code
+ * Cache Management | | Type Specific Cache Operations
+ *
+ * | | +----------------+ +------------+
+ * | request update | | msg_parser |
+ * | | +----------------+ +------------+
+ * +- - - - -^- - - - - - - -^- -|- - - -
+ * nl_cache_update: | | | |
+ * 1) --------- co_request_update ------+ | |
+ * | | |
+ * 2) destroy old cache +----------- pp_cb ---------|---+
+ * | | |
+ * 3) ---------- nl_recvmsgs ----------+ +- cb_valid -+
+ * +--------------+ | | | |
+ * | nl_cache_add |<-----+ + - - -v- -|- - - - - - - - - - -
+ * +--------------+ | | +-------------+
+ * | nl_recvmsgs |
+ * | | +-----|-^-----+
+ * +---v-|---+
+ * | | | nl_recv |
+ * +---------+
+ * | | Core Netlink
+ * @endcode
+ *
+ * @{
+ */
+
+#include <netlink-local.h>
+#include <netlink/netlink.h>
+#include <netlink/cache.h>
+#include <netlink/object.h>
+#include <netlink/utils.h>
+
+/**
+ * @name Access Functions
+ * @{
+ */
+
+#ifdef disabled
+/**
+ * Return the number of items in the cache
+ * @arg cache cache handle
+ */
+int nl_cache_nitems(struct nl_cache *cache)
+{
+ return cache->c_nitems;
+}
+
+/**
+ * Return the number of items matching a filter in the cache
+ * @arg cache Cache object.
+ * @arg filter Filter object.
+ */
+int nl_cache_nitems_filter(struct nl_cache *cache, struct nl_object *filter)
+{
+ struct nl_object_ops *ops;
+ struct nl_object *obj;
+ int nitems = 0;
+
+ if (cache->c_ops == NULL)
+ BUG();
+
+ ops = cache->c_ops->co_obj_ops;
+
+ nl_list_for_each_entry(obj, &cache->c_items, ce_list) {
+ if (filter && !nl_object_match_filter(obj, filter))
+ continue;
+
+ nitems++;
+ }
+
+ return nitems;
+}
+
+/**
+ * Returns \b true if the cache is empty.
+ * @arg cache Cache to check
+ * @return \a true if the cache is empty, otherwise \b false is returned.
+ */
+int nl_cache_is_empty(struct nl_cache *cache)
+{
+ return nl_list_empty(&cache->c_items);
+}
+
+/**
+ * Return the operations set of the cache
+ * @arg cache cache handle
+ */
+struct nl_cache_ops *nl_cache_get_ops(struct nl_cache *cache)
+{
+ return cache->c_ops;
+}
+
+/**
+ * Return the first element in the cache
+ * @arg cache cache handle
+ */
+struct nl_object *nl_cache_get_first(struct nl_cache *cache)
+{
+ if (nl_list_empty(&cache->c_items))
+ return NULL;
+
+ return nl_list_entry(cache->c_items.next,
+ struct nl_object, ce_list);
+}
+
+/**
+ * Return the last element in the cache
+ * @arg cache cache handle
+ */
+struct nl_object *nl_cache_get_last(struct nl_cache *cache)
+{
+ if (nl_list_empty(&cache->c_items))
+ return NULL;
+
+ return nl_list_entry(cache->c_items.prev,
+ struct nl_object, ce_list);
+}
+
+/**
+ * Return the next element in the cache
+ * @arg obj current object
+ */
+struct nl_object *nl_cache_get_next(struct nl_object *obj)
+{
+ if (nl_list_at_tail(obj, &obj->ce_cache->c_items, ce_list))
+ return NULL;
+ else
+ return nl_list_entry(obj->ce_list.next,
+ struct nl_object, ce_list);
+}
+
+/**
+ * Return the previous element in the cache
+ * @arg obj current object
+ */
+struct nl_object *nl_cache_get_prev(struct nl_object *obj)
+{
+ if (nl_list_at_head(obj, &obj->ce_cache->c_items, ce_list))
+ return NULL;
+ else
+ return nl_list_entry(obj->ce_list.prev,
+ struct nl_object, ce_list);
+}
+#endif
+
+/** @} */
+
+/**
+ * @name Cache Creation/Deletion
+ * @{
+ */
+
+/**
+ * Allocate an empty cache
+ * @arg ops cache operations to base the cache on
+ *
+ * @return A newly allocated and initialized cache.
+ */
+struct nl_cache *nl_cache_alloc(struct nl_cache_ops *ops)
+{
+ struct nl_cache *cache;
+
+ cache = calloc(1, sizeof(*cache));
+ if (!cache)
+ return NULL;
+
+ nl_init_list_head(&cache->c_items);
+ cache->c_ops = ops;
+
+ NL_DBG(2, "Allocated cache %p <%s>.\n", cache, nl_cache_name(cache));
+
+ return cache;
+}
+
+int nl_cache_alloc_and_fill(struct nl_cache_ops *ops, struct nl_sock *sock,
+ struct nl_cache **result)
+{
+ struct nl_cache *cache;
+ int err;
+
+ if (!(cache = nl_cache_alloc(ops)))
+ return -NLE_NOMEM;
+
+ if (sock && (err = nl_cache_refill(sock, cache)) < 0) {
+ nl_cache_free(cache);
+ return err;
+ }
+
+ *result = cache;
+ return 0;
+}
+
+#ifdef disabled
+/**
+ * Allocate an empty cache based on type name
+ * @arg kind Name of cache type
+ * @return A newly allocated and initialized cache.
+ */
+int nl_cache_alloc_name(const char *kind, struct nl_cache **result)
+{
+ struct nl_cache_ops *ops;
+ struct nl_cache *cache;
+
+ ops = nl_cache_ops_lookup(kind);
+ if (!ops)
+ return -NLE_NOCACHE;
+
+ if (!(cache = nl_cache_alloc(ops)))
+ return -NLE_NOMEM;
+
+ *result = cache;
+ return 0;
+}
+
+/**
+ * Allocate a new cache containing a subset of a cache
+ * @arg orig Original cache to be based on
+ * @arg filter Filter defining the subset to be filled into new cache
+ * @return A newly allocated cache or NULL.
+ */
+struct nl_cache *nl_cache_subset(struct nl_cache *orig,
+ struct nl_object *filter)
+{
+ struct nl_cache *cache;
+ struct nl_object_ops *ops;
+ struct nl_object *obj;
+
+ if (!filter)
+ BUG();
+
+ cache = nl_cache_alloc(orig->c_ops);
+ if (!cache)
+ return NULL;
+
+ ops = orig->c_ops->co_obj_ops;
+
+ nl_list_for_each_entry(obj, &orig->c_items, ce_list) {
+ if (!nl_object_match_filter(obj, filter))
+ continue;
+
+ nl_cache_add(cache, obj);
+ }
+
+ return cache;
+}
+#endif
+
+/**
+ * Clear a cache.
+ * @arg cache cache to clear
+ *
+ * Removes all elements of a cache.
+ */
+void nl_cache_clear(struct nl_cache *cache)
+{
+ struct nl_object *obj, *tmp;
+
+ NL_DBG(1, "Clearing cache %p <%s>...\n", cache, nl_cache_name(cache));
+
+ nl_list_for_each_entry_safe(obj, tmp, &cache->c_items, ce_list)
+ nl_cache_remove(obj);
+}
+
+/**
+ * Free a cache.
+ * @arg cache Cache to free.
+ *
+ * Removes all elements of a cache and frees all memory.
+ *
+ * @note Use this function if you are working with allocated caches.
+ */
+void nl_cache_free(struct nl_cache *cache)
+{
+ if (!cache)
+ return;
+
+ nl_cache_clear(cache);
+ NL_DBG(1, "Freeing cache %p <%s>...\n", cache, nl_cache_name(cache));
+ free(cache);
+}
+
+/** @} */
+
+/**
+ * @name Cache Modifications
+ * @{
+ */
+
+static int __cache_add(struct nl_cache *cache, struct nl_object *obj)
+{
+ obj->ce_cache = cache;
+
+ nl_list_add_tail(&obj->ce_list, &cache->c_items);
+ cache->c_nitems++;
+
+ NL_DBG(1, "Added %p to cache %p <%s>.\n",
+ obj, cache, nl_cache_name(cache));
+
+ return 0;
+}
+
+/**
+ * Add object to a cache.
+ * @arg cache Cache to add object to
+ * @arg obj Object to be added to the cache
+ *
+ * Adds the given object to the specified cache. The object is cloned
+ * if it has been added to another cache already.
+ *
+ * @return 0 or a negative error code.
+ */
+int nl_cache_add(struct nl_cache *cache, struct nl_object *obj)
+{
+ struct nl_object *new;
+
+ if (cache->c_ops->co_obj_ops != obj->ce_ops)
+ return -NLE_OBJ_MISMATCH;
+
+ if (!nl_list_empty(&obj->ce_list)) {
+ new = nl_object_clone(obj);
+ if (!new)
+ return -NLE_NOMEM;
+ } else {
+ nl_object_get(obj);
+ new = obj;
+ }
+
+ return __cache_add(cache, new);
+}
+
+#ifdef disabled
+/**
+ * Move object from one cache to another
+ * @arg cache Cache to move object to.
+ * @arg obj Object subject to be moved
+ *
+ * Removes the given object from its associated cache if needed
+ * and adds it to the new cache.
+ *
+ * @return 0 on success or a negative error code.
+ */
+int nl_cache_move(struct nl_cache *cache, struct nl_object *obj)
+{
+ if (cache->c_ops->co_obj_ops != obj->ce_ops)
+ return -NLE_OBJ_MISMATCH;
+
+ NL_DBG(3, "Moving object %p to cache %p\n", obj, cache);
+
+ /* Acquire reference, if already in a cache this will be
+ * reverted during removal */
+ nl_object_get(obj);
+
+ if (!nl_list_empty(&obj->ce_list))
+ nl_cache_remove(obj);
+
+ return __cache_add(cache, obj);
+}
+#endif
+
+/**
+ * Removes an object from a cache.
+ * @arg obj Object to remove from its cache
+ *
+ * Removes the object \c obj from the cache it is assigned to, since
+ * an object can only be assigned to one cache at a time, the cache
+ * must ne be passed along with it.
+ */
+void nl_cache_remove(struct nl_object *obj)
+{
+ struct nl_cache *cache = obj->ce_cache;
+
+ if (cache == NULL)
+ return;
+
+ nl_list_del(&obj->ce_list);
+ obj->ce_cache = NULL;
+ nl_object_put(obj);
+ cache->c_nitems--;
+
+ NL_DBG(1, "Deleted %p from cache %p <%s>.\n",
+ obj, cache, nl_cache_name(cache));
+}
+
+#ifdef disabled
+/**
+ * Search for an object in a cache
+ * @arg cache Cache to search in.
+ * @arg needle Object to look for.
+ *
+ * Iterates over the cache and looks for an object with identical
+ * identifiers as the needle.
+ *
+ * @return Reference to object or NULL if not found.
+ * @note The returned object must be returned via nl_object_put().
+ */
+struct nl_object *nl_cache_search(struct nl_cache *cache,
+ struct nl_object *needle)
+{
+ struct nl_object *obj;
+
+ nl_list_for_each_entry(obj, &cache->c_items, ce_list) {
+ if (nl_object_identical(obj, needle)) {
+ nl_object_get(obj);
+ return obj;
+ }
+ }
+
+ return NULL;
+}
+#endif
+
+/** @} */
+
+/**
+ * @name Synchronization
+ * @{
+ */
+
+/**
+ * Request a full dump from the kernel to fill a cache
+ * @arg sk Netlink socket.
+ * @arg cache Cache subjected to be filled.
+ *
+ * Send a dumping request to the kernel causing it to dump all objects
+ * related to the specified cache to the netlink socket.
+ *
+ * Use nl_cache_pickup() to read the objects from the socket and fill them
+ * into a cache.
+ */
+int nl_cache_request_full_dump(struct nl_sock *sk, struct nl_cache *cache)
+{
+ NL_DBG(2, "Requesting dump from kernel for cache %p <%s>...\n",
+ cache, nl_cache_name(cache));
+
+ if (cache->c_ops->co_request_update == NULL)
+ return -NLE_OPNOTSUPP;
+
+ return cache->c_ops->co_request_update(cache, sk);
+}
+
+/** @cond SKIP */
+struct update_xdata {
+ struct nl_cache_ops *ops;
+ struct nl_parser_param *params;
+};
+
+static int update_msg_parser(struct nl_msg *msg, void *arg)
+{
+ struct update_xdata *x = arg;
+
+ return nl_cache_parse(x->ops, &msg->nm_src, msg->nm_nlh, x->params);
+}
+/** @endcond */
+
+int __cache_pickup(struct nl_sock *sk, struct nl_cache *cache,
+ struct nl_parser_param *param)
+{
+ int err;
+ struct nl_cb *cb;
+ struct update_xdata x = {
+ .ops = cache->c_ops,
+ .params = param,
+ };
+
+ NL_DBG(1, "Picking up answer for cache %p <%s>...\n",
+ cache, nl_cache_name(cache));
+
+ cb = nl_cb_clone(sk->s_cb);
+ if (cb == NULL)
+ return -NLE_NOMEM;
+
+ nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, update_msg_parser, &x);
+
+ err = nl_recvmsgs(sk, cb);
+ if (err < 0)
+ NL_DBG(2, "While picking up for %p <%s>, recvmsgs() returned " \
+ "%d: %s", cache, nl_cache_name(cache),
+ err, nl_geterror(err));
+
+ nl_cb_put(cb);
+
+ return err;
+}
+
+static int pickup_cb(struct nl_object *c, struct nl_parser_param *p)
+{
+ return nl_cache_add((struct nl_cache *) p->pp_arg, c);
+}
+
+/**
+ * Pickup a netlink dump response and put it into a cache.
+ * @arg sk Netlink socket.
+ * @arg cache Cache to put items into.
+ *
+ * Waits for netlink messages to arrive, parses them and puts them into
+ * the specified cache.
+ *
+ * @return 0 on success or a negative error code.
+ */
+int nl_cache_pickup(struct nl_sock *sk, struct nl_cache *cache)
+{
+ struct nl_parser_param p = {
+ .pp_cb = pickup_cb,
+ .pp_arg = cache,
+ };
+
+ return __cache_pickup(sk, cache, &p);
+}
+
+#ifdef disabled
+static int cache_include(struct nl_cache *cache, struct nl_object *obj,
+ struct nl_msgtype *type, change_func_t cb)
+{
+ struct nl_object *old;
+
+ switch (type->mt_act) {
+ case NL_ACT_NEW:
+ case NL_ACT_DEL:
+ old = nl_cache_search(cache, obj);
+ if (old) {
+ nl_cache_remove(old);
+ if (type->mt_act == NL_ACT_DEL) {
+ if (cb)
+ cb(cache, old, NL_ACT_DEL);
+ nl_object_put(old);
+ }
+ }
+
+ if (type->mt_act == NL_ACT_NEW) {
+ nl_cache_move(cache, obj);
+ if (old == NULL && cb)
+ cb(cache, obj, NL_ACT_NEW);
+ else if (old) {
+ if (nl_object_diff(old, obj) && cb)
+ cb(cache, obj, NL_ACT_CHANGE);
+
+ nl_object_put(old);
+ }
+ }
+ break;
+ default:
+ NL_DBG(2, "Unknown action associated to object %p\n", obj);
+ return 0;
+ }
+
+ return 0;
+}
+
+int nl_cache_include(struct nl_cache *cache, struct nl_object *obj,
+ change_func_t change_cb)
+{
+ struct nl_cache_ops *ops = cache->c_ops;
+ int i;
+
+ if (ops->co_obj_ops != obj->ce_ops)
+ return -NLE_OBJ_MISMATCH;
+
+ for (i = 0; ops->co_msgtypes[i].mt_id >= 0; i++)
+ if (ops->co_msgtypes[i].mt_id == obj->ce_msgtype)
+ return cache_include(cache, obj, &ops->co_msgtypes[i],
+ change_cb);
+
+ return -NLE_MSGTYPE_NOSUPPORT;
+}
+
+static int resync_cb(struct nl_object *c, struct nl_parser_param *p)
+{
+ struct nl_cache_assoc *ca = p->pp_arg;
+
+ return nl_cache_include(ca->ca_cache, c, ca->ca_change);
+}
+
+int nl_cache_resync(struct nl_sock *sk, struct nl_cache *cache,
+ change_func_t change_cb)
+{
+ struct nl_object *obj, *next;
+ struct nl_cache_assoc ca = {
+ .ca_cache = cache,
+ .ca_change = change_cb,
+ };
+ struct nl_parser_param p = {
+ .pp_cb = resync_cb,
+ .pp_arg = &ca,
+ };
+ int err;
+
+ NL_DBG(1, "Resyncing cache %p <%s>...\n", cache, nl_cache_name(cache));
+
+ /* Mark all objects so we can see if some of them are obsolete */
+ nl_cache_mark_all(cache);
+
+ err = nl_cache_request_full_dump(sk, cache);
+ if (err < 0)
+ goto errout;
+
+ err = __cache_pickup(sk, cache, &p);
+ if (err < 0)
+ goto errout;
+
+ nl_list_for_each_entry_safe(obj, next, &cache->c_items, ce_list)
+ if (nl_object_is_marked(obj))
+ nl_cache_remove(obj);
+
+ NL_DBG(1, "Finished resyncing %p <%s>\n", cache, nl_cache_name(cache));
+
+ err = 0;
+errout:
+ return err;
+}
+#endif
+
+/** @} */
+
+/**
+ * @name Parsing
+ * @{
+ */
+
+/** @cond SKIP */
+int nl_cache_parse(struct nl_cache_ops *ops, struct sockaddr_nl *who,
+ struct nlmsghdr *nlh, struct nl_parser_param *params)
+{
+ int i, err;
+
+ if (!nlmsg_valid_hdr(nlh, ops->co_hdrsize))
+ return -NLE_MSG_TOOSHORT;
+
+ for (i = 0; ops->co_msgtypes[i].mt_id >= 0; i++) {
+ if (ops->co_msgtypes[i].mt_id == nlh->nlmsg_type) {
+ err = ops->co_msg_parser(ops, who, nlh, params);
+ if (err != -NLE_OPNOTSUPP)
+ goto errout;
+ }
+ }
+
+
+ err = -NLE_MSGTYPE_NOSUPPORT;
+errout:
+ return err;
+}
+/** @endcond */
+
+/**
+ * Parse a netlink message and add it to the cache.
+ * @arg cache cache to add element to
+ * @arg msg netlink message
+ *
+ * Parses a netlink message by calling the cache specific message parser
+ * and adds the new element to the cache.
+ *
+ * @return 0 or a negative error code.
+ */
+int nl_cache_parse_and_add(struct nl_cache *cache, struct nl_msg *msg)
+{
+ struct nl_parser_param p = {
+ .pp_cb = pickup_cb,
+ .pp_arg = cache,
+ };
+
+ return nl_cache_parse(cache->c_ops, NULL, nlmsg_hdr(msg), &p);
+}
+
+/**
+ * (Re)fill a cache with the contents in the kernel.
+ * @arg sk Netlink socket.
+ * @arg cache cache to update
+ *
+ * Clears the specified cache and fills it with the current state in
+ * the kernel.
+ *
+ * @return 0 or a negative error code.
+ */
+int nl_cache_refill(struct nl_sock *sk, struct nl_cache *cache)
+{
+ int err;
+
+ err = nl_cache_request_full_dump(sk, cache);
+ if (err < 0)
+ return err;
+
+ NL_DBG(2, "Upading cache %p <%s>, request sent, waiting for dump...\n",
+ cache, nl_cache_name(cache));
+ nl_cache_clear(cache);
+
+ return nl_cache_pickup(sk, cache);
+}
+
+/** @} */
+#ifdef disabled
+
+/**
+ * @name Utillities
+ * @{
+ */
+
+/**
+ * Mark all objects in a cache
+ * @arg cache Cache to mark all objects in
+ */
+void nl_cache_mark_all(struct nl_cache *cache)
+{
+ struct nl_object *obj;
+
+ NL_DBG(2, "Marking all objects in cache %p <%s>...\n",
+ cache, nl_cache_name(cache));
+
+ nl_list_for_each_entry(obj, &cache->c_items, ce_list)
+ nl_object_mark(obj);
+}
+
+/** @} */
+
+/**
+ * @name Dumping
+ * @{
+ */
+#ifdef disabled
+/**
+ * Dump all elements of a cache.
+ * @arg cache cache to dump
+ * @arg params dumping parameters
+ *
+ * Dumps all elements of the \a cache to the file descriptor \a fd.
+ */
+void nl_cache_dump(struct nl_cache *cache, struct nl_dump_params *params)
+{
+ nl_cache_dump_filter(cache, params, NULL);
+}
+
+/**
+ * Dump all elements of a cache (filtered).
+ * @arg cache cache to dump
+ * @arg params dumping parameters (optional)
+ * @arg filter filter object
+ *
+ * Dumps all elements of the \a cache to the file descriptor \a fd
+ * given they match the given filter \a filter.
+ */
+void nl_cache_dump_filter(struct nl_cache *cache,
+ struct nl_dump_params *params,
+ struct nl_object *filter)
+{
+ int type = params ? params->dp_type : NL_DUMP_DETAILS;
+ struct nl_object_ops *ops;
+ struct nl_object *obj;
+
+ NL_DBG(2, "Dumping cache %p <%s> filter %p\n",
+ cache, nl_cache_name(cache), filter);
+
+ if (type > NL_DUMP_MAX || type < 0)
+ BUG();
+
+ if (cache->c_ops == NULL)
+ BUG();
+
+ ops = cache->c_ops->co_obj_ops;
+ if (!ops->oo_dump[type])
+ return;
+
+ nl_list_for_each_entry(obj, &cache->c_items, ce_list) {
+ if (filter && !nl_object_match_filter(obj, filter))
+ continue;
+
+ NL_DBG(4, "Dumping object %p...\n", obj);
+ dump_from_ops(obj, params);
+ }
+}
+#endif
+
+/** @} */
+
+/**
+ * @name Iterators
+ * @{
+ */
+
+/**
+ * Call a callback on each element of the cache.
+ * @arg cache cache to iterate on
+ * @arg cb callback function
+ * @arg arg argument passed to callback function
+ *
+ * Calls a callback function \a cb on each element of the \a cache.
+ * The argument \a arg is passed on the callback function.
+ */
+void nl_cache_foreach(struct nl_cache *cache,
+ void (*cb)(struct nl_object *, void *), void *arg)
+{
+ nl_cache_foreach_filter(cache, NULL, cb, arg);
+}
+
+/**
+ * Call a callback on each element of the cache (filtered).
+ * @arg cache cache to iterate on
+ * @arg filter filter object
+ * @arg cb callback function
+ * @arg arg argument passed to callback function
+ *
+ * Calls a callback function \a cb on each element of the \a cache
+ * that matches the \a filter. The argument \a arg is passed on
+ * to the callback function.
+ */
+void nl_cache_foreach_filter(struct nl_cache *cache, struct nl_object *filter,
+ void (*cb)(struct nl_object *, void *), void *arg)
+{
+ struct nl_object *obj, *tmp;
+ struct nl_object_ops *ops;
+
+ if (cache->c_ops == NULL)
+ BUG();
+
+ ops = cache->c_ops->co_obj_ops;
+
+ nl_list_for_each_entry_safe(obj, tmp, &cache->c_items, ce_list) {
+ if (filter && !nl_object_match_filter(obj, filter))
+ continue;
+
+ cb(obj, arg);
+ }
+}
+
+/** @} */
+#endif
+
+/** @} */
--- /dev/null
+/*
+ * lib/cache_mngt.c Cache Management
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation version 2.1
+ * of the License.
+ *
+ * Copyright (c) 2003-2008 Thomas Graf <tgraf@suug.ch>
+ */
+
+/**
+ * @ingroup core
+ * @defgroup cache_mngt Caching
+ * @{
+ */
+
+#include <netlink-local.h>
+#include <netlink/netlink.h>
+#include <netlink/cache.h>
+#include <netlink/utils.h>
+
+static struct nl_cache_ops *cache_ops;
+
+/**
+ * @name Cache Operations Sets
+ * @{
+ */
+
+/**
+ * Lookup the set cache operations of a certain cache type
+ * @arg name name of the cache type
+ *
+ * @return The cache operations or NULL if no operations
+ * have been registered under the specified name.
+ */
+struct nl_cache_ops *nl_cache_ops_lookup(const char *name)
+{
+ struct nl_cache_ops *ops;
+
+ for (ops = cache_ops; ops; ops = ops->co_next)
+ if (!strcmp(ops->co_name, name))
+ return ops;
+
+ return NULL;
+}
+
+/**
+ * Associate a message type to a set of cache operations
+ * @arg protocol netlink protocol
+ * @arg msgtype netlink message type
+ *
+ * Associates the specified netlink message type with
+ * a registered set of cache operations.
+ *
+ * @return The cache operations or NULL if no association
+ * could be made.
+ */
+struct nl_cache_ops *nl_cache_ops_associate(int protocol, int msgtype)
+{
+ int i;
+ struct nl_cache_ops *ops;
+
+ for (ops = cache_ops; ops; ops = ops->co_next) {
+ if (ops->co_protocol != protocol)
+ continue;
+
+ for (i = 0; ops->co_msgtypes[i].mt_id >= 0; i++)
+ if (ops->co_msgtypes[i].mt_id == msgtype)
+ return ops;
+ }
+
+ return NULL;
+}
+
+/**
+ * Lookup message type cache association
+ * @arg ops cache operations
+ * @arg msgtype netlink message type
+ *
+ * Searches for a matching message type association ing the specified
+ * cache operations.
+ *
+ * @return A message type association or NULL.
+ */
+struct nl_msgtype *nl_msgtype_lookup(struct nl_cache_ops *ops, int msgtype)
+{
+ int i;
+
+ for (i = 0; ops->co_msgtypes[i].mt_id >= 0; i++)
+ if (ops->co_msgtypes[i].mt_id == msgtype)
+ return &ops->co_msgtypes[i];
+
+ return NULL;
+}
+
+static struct nl_cache_ops *cache_ops_lookup_for_obj(struct nl_object_ops *obj_ops)
+{
+ struct nl_cache_ops *ops;
+
+ for (ops = cache_ops; ops; ops = ops->co_next)
+ if (ops->co_obj_ops == obj_ops)
+ return ops;
+
+ return NULL;
+
+}
+
+/**
+ * Call a function for each registered cache operation
+ * @arg cb Callback function to be called
+ * @arg arg User specific argument.
+ */
+void nl_cache_ops_foreach(void (*cb)(struct nl_cache_ops *, void *), void *arg)
+{
+ struct nl_cache_ops *ops;
+
+ for (ops = cache_ops; ops; ops = ops->co_next)
+ cb(ops, arg);
+}
+
+/**
+ * Register a set of cache operations
+ * @arg ops cache operations
+ *
+ * Called by users of caches to announce the avaibility of
+ * a certain cache type.
+ *
+ * @return 0 on success or a negative error code.
+ */
+int nl_cache_mngt_register(struct nl_cache_ops *ops)
+{
+ if (!ops->co_name || !ops->co_obj_ops)
+ return -NLE_INVAL;
+
+ if (nl_cache_ops_lookup(ops->co_name))
+ return -NLE_EXIST;
+
+ ops->co_next = cache_ops;
+ cache_ops = ops;
+
+ NL_DBG(1, "Registered cache operations %s\n", ops->co_name);
+
+ return 0;
+}
+
+/**
+ * Unregister a set of cache operations
+ * @arg ops cache operations
+ *
+ * Called by users of caches to announce a set of
+ * cache operations is no longer available. The
+ * specified cache operations must have been registered
+ * previously using nl_cache_mngt_register()
+ *
+ * @return 0 on success or a negative error code
+ */
+int nl_cache_mngt_unregister(struct nl_cache_ops *ops)
+{
+ struct nl_cache_ops *t, **tp;
+
+ for (tp = &cache_ops; (t=*tp) != NULL; tp = &t->co_next)
+ if (t == ops)
+ break;
+
+ if (!t)
+ return -NLE_NOCACHE;
+
+ NL_DBG(1, "Unregistered cache operations %s\n", ops->co_name);
+
+ *tp = t->co_next;
+ return 0;
+}
+
+/** @} */
+
+/**
+ * @name Global Cache Provisioning/Requiring
+ * @{
+ */
+
+/**
+ * Provide a cache for global use
+ * @arg cache cache to provide
+ *
+ * Offers the specified cache to be used by other modules.
+ * Only one cache per type may be shared at a time,
+ * a previsouly provided caches will be overwritten.
+ */
+void nl_cache_mngt_provide(struct nl_cache *cache)
+{
+ struct nl_cache_ops *ops;
+
+ ops = cache_ops_lookup_for_obj(cache->c_ops->co_obj_ops);
+ if (!ops)
+ BUG();
+ else
+ ops->co_major_cache = cache;
+}
+
+/**
+ * Unprovide a cache for global use
+ * @arg cache cache to unprovide
+ *
+ * Cancels the offer to use a cache globally. The
+ * cache will no longer be returned via lookups but
+ * may still be in use.
+ */
+void nl_cache_mngt_unprovide(struct nl_cache *cache)
+{
+ struct nl_cache_ops *ops;
+
+ ops = cache_ops_lookup_for_obj(cache->c_ops->co_obj_ops);
+ if (!ops)
+ BUG();
+ else if (ops->co_major_cache == cache)
+ ops->co_major_cache = NULL;
+}
+
+/**
+ * Demand the use of a global cache
+ * @arg name name of the required object type
+ *
+ * Trys to find a cache of the specified type for global
+ * use.
+ *
+ * @return A cache provided by another subsystem of the
+ * specified type marked to be available.
+ */
+struct nl_cache *nl_cache_mngt_require(const char *name)
+{
+ struct nl_cache_ops *ops;
+
+ ops = nl_cache_ops_lookup(name);
+ if (!ops || !ops->co_major_cache) {
+ fprintf(stderr, "Application BUG: Your application must "
+ "call nl_cache_mngt_provide() and\nprovide a valid "
+ "%s cache to be used for internal lookups.\nSee the "
+ " API documentation for more details.\n", name);
+
+ return NULL;
+ }
+
+ return ops->co_major_cache;
+}
+
+/** @} */
+
+/** @} */
--- /dev/null
+/*
+ * lib/error.c Error Handling
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation version 2.1
+ * of the License.
+ *
+ * Copyright (c) 2008 Thomas Graf <tgraf@suug.ch>
+ */
+
+#include <netlink-local.h>
+#include <netlink/netlink.h>
+
+static const char *errmsg[NLE_MAX+1] = {
+[NLE_SUCCESS] = "Success",
+[NLE_FAILURE] = "Unspecific failure",
+[NLE_INTR] = "Interrupted system call",
+[NLE_BAD_SOCK] = "Bad socket",
+[NLE_AGAIN] = "Try again",
+[NLE_NOMEM] = "Out of memory",
+[NLE_EXIST] = "Object exists",
+[NLE_INVAL] = "Invalid input data or parameter",
+[NLE_RANGE] = "Input data out of range",
+[NLE_MSGSIZE] = "Message size not sufficient",
+[NLE_OPNOTSUPP] = "Operation not supported",
+[NLE_AF_NOSUPPORT] = "Address family not supported",
+[NLE_OBJ_NOTFOUND] = "Object not found",
+[NLE_NOATTR] = "Attribute not available",
+[NLE_MISSING_ATTR] = "Missing attribute",
+[NLE_AF_MISMATCH] = "Address family mismatch",
+[NLE_SEQ_MISMATCH] = "Message sequence number mismatch",
+[NLE_MSG_OVERFLOW] = "Kernel reported message overflow",
+[NLE_MSG_TRUNC] = "Kernel reported truncated message",
+[NLE_NOADDR] = "Invalid address for specified address family",
+[NLE_SRCRT_NOSUPPORT] = "Source based routing not supported",
+[NLE_MSG_TOOSHORT] = "Netlink message is too short",
+[NLE_MSGTYPE_NOSUPPORT] = "Netlink message type is not supported",
+[NLE_OBJ_MISMATCH] = "Object type does not match cache",
+[NLE_NOCACHE] = "Unknown or invalid cache type",
+[NLE_BUSY] = "Object busy",
+[NLE_PROTO_MISMATCH] = "Protocol mismatch",
+[NLE_NOACCESS] = "No Access",
+[NLE_PERM] = "Operation not permitted",
+};
+
+/**
+ * Return error message for an error code
+ * @return error message
+ */
+const char *nl_geterror(int error)
+{
+ error = abs(error);
+
+ if (error > NLE_MAX)
+ error = NLE_FAILURE;
+
+ return errmsg[error];
+}
+
+/**
+ * Print a libnl error message
+ * @arg s error message prefix
+ *
+ * Prints the error message of the call that failed last.
+ *
+ * If s is not NULL and *s is not a null byte the argument
+ * string is printed, followed by a colon and a blank. Then
+ * the error message and a new-line.
+ */
+void nl_perror(int error, const char *s)
+{
+ if (s && *s)
+ fprintf(stderr, "%s: %s\n", s, nl_geterror(error));
+ else
+ fprintf(stderr, "%s\n", nl_geterror(error));
+}
+
+int nl_syserr2nlerr(int error)
+{
+ error = abs(error);
+
+ switch (error) {
+ case EBADF: return NLE_BAD_SOCK;
+ case EADDRINUSE: return NLE_EXIST;
+ case EEXIST: return NLE_EXIST;
+ case EADDRNOTAVAIL: return NLE_NOADDR;
+ case ENOENT: return NLE_OBJ_NOTFOUND;
+ case EINTR: return NLE_INTR;
+ case EAGAIN: return NLE_AGAIN;
+ case ENOTSOCK: return NLE_BAD_SOCK;
+ case ENOPROTOOPT: return NLE_INVAL;
+ case EFAULT: return NLE_INVAL;
+ case EACCES: return NLE_NOACCESS;
+ case EINVAL: return NLE_INVAL;
+ case ENOBUFS: return NLE_NOMEM;
+ case ENOMEM: return NLE_NOMEM;
+ case EAFNOSUPPORT: return NLE_AF_NOSUPPORT;
+ case EPROTONOSUPPORT: return NLE_PROTO_MISMATCH;
+ case EOPNOTSUPP: return NLE_OPNOTSUPP;
+ case EPERM: return NLE_PERM;
+ case EBUSY: return NLE_BUSY;
+ default: return NLE_FAILURE;
+ }
+}
+
+/** @} */
+
--- /dev/null
+/*
+ * lib/genl/genl.c Generic Netlink
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation version 2.1
+ * of the License.
+ *
+ * Copyright (c) 2003-2008 Thomas Graf <tgraf@suug.ch>
+ */
+
+/**
+ * @defgroup genl Generic Netlink
+ *
+ * @par Message Format
+ * @code
+ * <------- NLMSG_ALIGN(hlen) ------> <---- NLMSG_ALIGN(len) --->
+ * +----------------------------+- - -+- - - - - - - - - - -+- - -+
+ * | Header | Pad | Payload | Pad |
+ * | struct nlmsghdr | | | |
+ * +----------------------------+- - -+- - - - - - - - - - -+- - -+
+ * @endcode
+ * @code
+ * <-------- GENL_HDRLEN -------> <--- hdrlen -->
+ * <------- genlmsg_len(ghdr) ------>
+ * +------------------------+- - -+---------------+- - -+------------+
+ * | Generic Netlink Header | Pad | Family Header | Pad | Attributes |
+ * | struct genlmsghdr | | | | |
+ * +------------------------+- - -+---------------+- - -+------------+
+ * genlmsg_data(ghdr)--------------^ ^
+ * genlmsg_attrdata(ghdr, hdrlen)-------------------------
+ * @endcode
+ *
+ * @par Example
+ * @code
+ * #include <netlink/netlink.h>
+ * #include <netlink/genl/genl.h>
+ * #include <netlink/genl/ctrl.h>
+ *
+ * struct nl_sock *sock;
+ * struct nl_msg *msg;
+ * int family;
+ *
+ * // Allocate a new netlink socket
+ * sock = nl_socket_alloc();
+ *
+ * // Connect to generic netlink socket on kernel side
+ * genl_connect(sock);
+ *
+ * // Ask kernel to resolve family name to family id
+ * family = genl_ctrl_resolve(sock, "generic_netlink_family_name");
+ *
+ * // Construct a generic netlink by allocating a new message, fill in
+ * // the header and append a simple integer attribute.
+ * msg = nlmsg_alloc();
+ * genlmsg_put(msg, NL_AUTO_PID, NL_AUTO_SEQ, family, 0, NLM_F_ECHO,
+ * CMD_FOO_GET, FOO_VERSION);
+ * nla_put_u32(msg, ATTR_FOO, 123);
+ *
+ * // Send message over netlink socket
+ * nl_send_auto_complete(sock, msg);
+ *
+ * // Free message
+ * nlmsg_free(msg);
+ *
+ * // Prepare socket to receive the answer by specifying the callback
+ * // function to be called for valid messages.
+ * nl_socket_modify_cb(sock, NL_CB_VALID, NL_CB_CUSTOM, parse_cb, NULL);
+ *
+ * // Wait for the answer and receive it
+ * nl_recvmsgs_default(sock);
+ *
+ * static int parse_cb(struct nl_msg *msg, void *arg)
+ * {
+ * struct nlmsghdr *nlh = nlmsg_hdr(msg);
+ * struct nlattr *attrs[ATTR_MAX+1];
+ *
+ * // Validate message and parse attributes
+ * genlmsg_parse(nlh, 0, attrs, ATTR_MAX, policy);
+ *
+ * if (attrs[ATTR_FOO]) {
+ * uint32_t value = nla_get_u32(attrs[ATTR_FOO]);
+ * ...
+ * }
+ *
+ * return 0;
+ * }
+ * @endcode
+ * @{
+ */
+
+#include <netlink-generic.h>
+#include <netlink/netlink.h>
+#include <netlink/genl/genl.h>
+#include <netlink/utils.h>
+
+/**
+ * @name Socket Creating
+ * @{
+ */
+
+int genl_connect(struct nl_sock *sk)
+{
+ return nl_connect(sk, NETLINK_GENERIC);
+}
+
+/** @} */
+
+/**
+ * @name Sending
+ * @{
+ */
+
+/**
+ * Send trivial generic netlink message
+ * @arg sk Netlink socket.
+ * @arg family Generic netlink family
+ * @arg cmd Command
+ * @arg version Version
+ * @arg flags Additional netlink message flags.
+ *
+ * Fills out a routing netlink request message and sends it out
+ * using nl_send_simple().
+ *
+ * @return 0 on success or a negative error code.
+ */
+int genl_send_simple(struct nl_sock *sk, int family, int cmd,
+ int version, int flags)
+{
+ struct genlmsghdr hdr = {
+ .cmd = cmd,
+ .version = version,
+ };
+
+ return nl_send_simple(sk, family, flags, &hdr, sizeof(hdr));
+}
+
+/** @} */
+
+
+/**
+ * @name Message Parsing
+ * @{
+ */
+
+int genlmsg_valid_hdr(struct nlmsghdr *nlh, int hdrlen)
+{
+ struct genlmsghdr *ghdr;
+
+ if (!nlmsg_valid_hdr(nlh, GENL_HDRLEN))
+ return 0;
+
+ ghdr = nlmsg_data(nlh);
+ if (genlmsg_len(ghdr) < NLMSG_ALIGN(hdrlen))
+ return 0;
+
+ return 1;
+}
+
+int genlmsg_validate(struct nlmsghdr *nlh, int hdrlen, int maxtype,
+ struct nla_policy *policy)
+{
+ struct genlmsghdr *ghdr;
+
+ if (!genlmsg_valid_hdr(nlh, hdrlen))
+ return -NLE_MSG_TOOSHORT;
+
+ ghdr = nlmsg_data(nlh);
+ return nla_validate(genlmsg_attrdata(ghdr, hdrlen),
+ genlmsg_attrlen(ghdr, hdrlen), maxtype, policy);
+}
+
+int genlmsg_parse(struct nlmsghdr *nlh, int hdrlen, struct nlattr *tb[],
+ int maxtype, struct nla_policy *policy)
+{
+ struct genlmsghdr *ghdr;
+
+ if (!genlmsg_valid_hdr(nlh, hdrlen))
+ return -NLE_MSG_TOOSHORT;
+
+ ghdr = nlmsg_data(nlh);
+ return nla_parse(tb, maxtype, genlmsg_attrdata(ghdr, hdrlen),
+ genlmsg_attrlen(ghdr, hdrlen), policy);
+}
+
+/**
+ * Get head of message payload
+ * @arg gnlh genetlink messsage header
+ */
+void *genlmsg_data(const struct genlmsghdr *gnlh)
+{
+ return ((unsigned char *) gnlh + GENL_HDRLEN);
+}
+
+/**
+ * Get lenght of message payload
+ * @arg gnlh genetlink message header
+ */
+int genlmsg_len(const struct genlmsghdr *gnlh)
+{
+ struct nlmsghdr *nlh = (struct nlmsghdr *)((unsigned char *)gnlh -
+ NLMSG_HDRLEN);
+ return (nlh->nlmsg_len - GENL_HDRLEN - NLMSG_HDRLEN);
+}
+
+/**
+ * Get head of attribute data
+ * @arg gnlh generic netlink message header
+ * @arg hdrlen length of family specific header
+ */
+struct nlattr *genlmsg_attrdata(const struct genlmsghdr *gnlh, int hdrlen)
+{
+ return genlmsg_data(gnlh) + NLMSG_ALIGN(hdrlen);
+}
+
+/**
+ * Get length of attribute data
+ * @arg gnlh generic netlink message header
+ * @arg hdrlen length of family specific header
+ */
+int genlmsg_attrlen(const struct genlmsghdr *gnlh, int hdrlen)
+{
+ return genlmsg_len(gnlh) - NLMSG_ALIGN(hdrlen);
+}
+
+/** @} */
+
+/**
+ * @name Message Building
+ * @{
+ */
+
+/**
+ * Add generic netlink header to netlink message
+ * @arg msg netlink message
+ * @arg pid netlink process id or NL_AUTO_PID
+ * @arg seq sequence number of message or NL_AUTO_SEQ
+ * @arg family generic netlink family
+ * @arg hdrlen length of user specific header
+ * @arg flags message flags
+ * @arg cmd generic netlink command
+ * @arg version protocol version
+ *
+ * Returns pointer to user specific header.
+ */
+void *genlmsg_put(struct nl_msg *msg, uint32_t pid, uint32_t seq, int family,
+ int hdrlen, int flags, uint8_t cmd, uint8_t version)
+{
+ struct nlmsghdr *nlh;
+ struct genlmsghdr hdr = {
+ .cmd = cmd,
+ .version = version,
+ };
+
+ nlh = nlmsg_put(msg, pid, seq, family, GENL_HDRLEN + hdrlen, flags);
+ if (nlh == NULL)
+ return NULL;
+
+ memcpy(nlmsg_data(nlh), &hdr, sizeof(hdr));
+ NL_DBG(2, "msg %p: Added generic netlink header cmd=%d version=%d\n",
+ msg, cmd, version);
+
+ return nlmsg_data(nlh) + GENL_HDRLEN;
+}
+
+/** @} */
+
+/** @} */
--- /dev/null
+/*
+ * lib/genl/ctrl.c Generic Netlink Controller
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation version 2.1
+ * of the License.
+ *
+ * Copyright (c) 2003-2008 Thomas Graf <tgraf@suug.ch>
+ */
+
+/**
+ * @ingroup genl_mngt
+ * @defgroup ctrl Controller
+ * @brief
+ *
+ * @{
+ */
+
+#include <netlink-generic.h>
+#include <netlink/netlink.h>
+#include <netlink/genl/genl.h>
+#include <netlink/genl/family.h>
+#include <netlink/genl/mngt.h>
+#include <netlink/genl/ctrl.h>
+#include <netlink/utils.h>
+
+/** @cond SKIP */
+#define CTRL_VERSION 0x0001
+
+static struct nl_cache_ops genl_ctrl_ops;
+/** @endcond */
+
+static int ctrl_request_update(struct nl_cache *c, struct nl_sock *h)
+{
+ return genl_send_simple(h, GENL_ID_CTRL, CTRL_CMD_GETFAMILY,
+ CTRL_VERSION, NLM_F_DUMP);
+}
+
+static struct nla_policy ctrl_policy[CTRL_ATTR_MAX+1] = {
+ [CTRL_ATTR_FAMILY_ID] = { .type = NLA_U16 },
+ [CTRL_ATTR_FAMILY_NAME] = { .type = NLA_STRING,
+ .maxlen = GENL_NAMSIZ },
+ [CTRL_ATTR_VERSION] = { .type = NLA_U32 },
+ [CTRL_ATTR_HDRSIZE] = { .type = NLA_U32 },
+ [CTRL_ATTR_MAXATTR] = { .type = NLA_U32 },
+ [CTRL_ATTR_OPS] = { .type = NLA_NESTED },
+};
+
+static struct nla_policy family_op_policy[CTRL_ATTR_OP_MAX+1] = {
+ [CTRL_ATTR_OP_ID] = { .type = NLA_U32 },
+ [CTRL_ATTR_OP_FLAGS] = { .type = NLA_U32 },
+};
+
+static int ctrl_msg_parser(struct nl_cache_ops *ops, struct genl_cmd *cmd,
+ struct genl_info *info, void *arg)
+{
+ struct genl_family *family;
+ struct nl_parser_param *pp = arg;
+ int err;
+
+ family = genl_family_alloc();
+ if (family == NULL) {
+ err = -NLE_NOMEM;
+ goto errout;
+ }
+
+ if (info->attrs[CTRL_ATTR_FAMILY_NAME] == NULL) {
+ err = -NLE_MISSING_ATTR;
+ goto errout;
+ }
+
+ if (info->attrs[CTRL_ATTR_FAMILY_ID] == NULL) {
+ err = -NLE_MISSING_ATTR;
+ goto errout;
+ }
+
+ family->ce_msgtype = info->nlh->nlmsg_type;
+ genl_family_set_id(family,
+ nla_get_u16(info->attrs[CTRL_ATTR_FAMILY_ID]));
+ genl_family_set_name(family,
+ nla_get_string(info->attrs[CTRL_ATTR_FAMILY_NAME]));
+
+ if (info->attrs[CTRL_ATTR_VERSION]) {
+ uint32_t version = nla_get_u32(info->attrs[CTRL_ATTR_VERSION]);
+ genl_family_set_version(family, version);
+ }
+
+ if (info->attrs[CTRL_ATTR_HDRSIZE]) {
+ uint32_t hdrsize = nla_get_u32(info->attrs[CTRL_ATTR_HDRSIZE]);
+ genl_family_set_hdrsize(family, hdrsize);
+ }
+
+ if (info->attrs[CTRL_ATTR_MAXATTR]) {
+ uint32_t maxattr = nla_get_u32(info->attrs[CTRL_ATTR_MAXATTR]);
+ genl_family_set_maxattr(family, maxattr);
+ }
+
+ if (info->attrs[CTRL_ATTR_OPS]) {
+ struct nlattr *nla, *nla_ops;
+ int remaining;
+
+ nla_ops = info->attrs[CTRL_ATTR_OPS];
+ nla_for_each_nested(nla, nla_ops, remaining) {
+ struct nlattr *tb[CTRL_ATTR_OP_MAX+1];
+ int flags = 0, id;
+
+ err = nla_parse_nested(tb, CTRL_ATTR_OP_MAX, nla,
+ family_op_policy);
+ if (err < 0)
+ goto errout;
+
+ if (tb[CTRL_ATTR_OP_ID] == NULL) {
+ err = -NLE_MISSING_ATTR;
+ goto errout;
+ }
+
+ id = nla_get_u32(tb[CTRL_ATTR_OP_ID]);
+
+ if (tb[CTRL_ATTR_OP_FLAGS])
+ flags = nla_get_u32(tb[CTRL_ATTR_OP_FLAGS]);
+
+ err = genl_family_add_op(family, id, flags);
+ if (err < 0)
+ goto errout;
+
+ }
+ }
+
+ err = pp->pp_cb((struct nl_object *) family, pp);
+errout:
+ genl_family_put(family);
+ return err;
+}
+
+/**
+ * @name Cache Management
+ * @{
+ */
+
+int genl_ctrl_alloc_cache(struct nl_sock *sock, struct nl_cache **result)
+{
+ return nl_cache_alloc_and_fill(&genl_ctrl_ops, sock, result);
+}
+
+/**
+ * Look up generic netlink family by id in the provided cache.
+ * @arg cache Generic netlink family cache.
+ * @arg id Family identifier.
+ *
+ * Searches through the cache looking for a registered family
+ * matching the specified identifier. The caller will own a
+ * reference on the returned object which needs to be given
+ * back after usage using genl_family_put().
+ *
+ * @return Generic netlink family object or NULL if no match was found.
+ */
+struct genl_family *genl_ctrl_search(struct nl_cache *cache, int id)
+{
+ struct genl_family *fam;
+
+ if (cache->c_ops != &genl_ctrl_ops)
+ BUG();
+
+ nl_list_for_each_entry(fam, &cache->c_items, ce_list) {
+ if (fam->gf_id == id) {
+ nl_object_get((struct nl_object *) fam);
+ return fam;
+ }
+ }
+
+ return NULL;
+}
+
+/**
+ * @name Resolver
+ * @{
+ */
+
+/**
+ * Look up generic netlink family by family name in the provided cache.
+ * @arg cache Generic netlink family cache.
+ * @arg name Family name.
+ *
+ * Searches through the cache looking for a registered family
+ * matching the specified name. The caller will own a reference
+ * on the returned object which needs to be given back after
+ * usage using genl_family_put().
+ *
+ * @return Generic netlink family object or NULL if no match was found.
+ */
+struct genl_family *genl_ctrl_search_by_name(struct nl_cache *cache,
+ const char *name)
+{
+ struct genl_family *fam;
+
+ if (cache->c_ops != &genl_ctrl_ops)
+ BUG();
+
+ nl_list_for_each_entry(fam, &cache->c_items, ce_list) {
+ if (!strcmp(name, fam->gf_name)) {
+ nl_object_get((struct nl_object *) fam);
+ return fam;
+ }
+ }
+
+ return NULL;
+}
+
+/** @} */
+
+/**
+ * Resolve generic netlink family name to its identifier
+ * @arg sk Netlink socket.
+ * @arg name Name of generic netlink family
+ *
+ * Resolves the generic netlink family name to its identifer and returns
+ * it.
+ *
+ * @return A positive identifier or a negative error code.
+ */
+int genl_ctrl_resolve(struct nl_sock *sk, const char *name)
+{
+ struct nl_cache *cache;
+ struct genl_family *family;
+ int err;
+
+ if ((err = genl_ctrl_alloc_cache(sk, &cache)) < 0)
+ return err;
+
+ family = genl_ctrl_search_by_name(cache, name);
+ if (family == NULL) {
+ err = -NLE_OBJ_NOTFOUND;
+ goto errout;
+ }
+
+ err = genl_family_get_id(family);
+ genl_family_put(family);
+errout:
+ nl_cache_free(cache);
+
+ return err;
+}
+
+/** @} */
+
+static struct genl_cmd genl_cmds[] = {
+ {
+ .c_id = CTRL_CMD_NEWFAMILY,
+ .c_name = "NEWFAMILY" ,
+ .c_maxattr = CTRL_ATTR_MAX,
+ .c_attr_policy = ctrl_policy,
+ .c_msg_parser = ctrl_msg_parser,
+ },
+ {
+ .c_id = CTRL_CMD_DELFAMILY,
+ .c_name = "DELFAMILY" ,
+ },
+ {
+ .c_id = CTRL_CMD_GETFAMILY,
+ .c_name = "GETFAMILY" ,
+ },
+ {
+ .c_id = CTRL_CMD_NEWOPS,
+ .c_name = "NEWOPS" ,
+ },
+ {
+ .c_id = CTRL_CMD_DELOPS,
+ .c_name = "DELOPS" ,
+ },
+};
+
+static struct genl_ops genl_ops = {
+ .o_cmds = genl_cmds,
+ .o_ncmds = ARRAY_SIZE(genl_cmds),
+};
+
+/** @cond SKIP */
+extern struct nl_object_ops genl_family_ops;
+/** @endcond */
+
+static struct nl_cache_ops genl_ctrl_ops = {
+ .co_name = "genl/family",
+ .co_hdrsize = GENL_HDRSIZE(0),
+ .co_msgtypes = GENL_FAMILY(GENL_ID_CTRL, "nlctrl"),
+ .co_genl = &genl_ops,
+ .co_protocol = NETLINK_GENERIC,
+ .co_request_update = ctrl_request_update,
+ .co_obj_ops = &genl_family_ops,
+};
+
+static void __init ctrl_init(void)
+{
+ genl_register(&genl_ctrl_ops);
+}
+
+static void __exit ctrl_exit(void)
+{
+ genl_unregister(&genl_ctrl_ops);
+}
+
+/** @} */
--- /dev/null
+/*
+ * lib/genl/family.c Generic Netlink Family
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation version 2.1
+ * of the License.
+ *
+ * Copyright (c) 2003-2006 Thomas Graf <tgraf@suug.ch>
+ */
+
+/**
+ * @ingroup genl
+ * @defgroup genl_family Generic Netlink Family
+ * @brief
+ *
+ * @{
+ */
+
+#include <netlink-generic.h>
+#include <netlink/netlink.h>
+#include <netlink/genl/genl.h>
+#include <netlink/genl/family.h>
+#include <netlink/utils.h>
+
+struct nl_object_ops genl_family_ops;
+/** @endcond */
+
+static void family_constructor(struct nl_object *c)
+{
+ struct genl_family *family = (struct genl_family *) c;
+
+ nl_init_list_head(&family->gf_ops);
+}
+
+static void family_free_data(struct nl_object *c)
+{
+ struct genl_family *family = (struct genl_family *) c;
+ struct genl_family_op *ops, *tmp;
+
+ if (family == NULL)
+ return;
+
+ nl_list_for_each_entry_safe(ops, tmp, &family->gf_ops, o_list) {
+ nl_list_del(&ops->o_list);
+ free(ops);
+ }
+}
+
+static int family_clone(struct nl_object *_dst, struct nl_object *_src)
+{
+ struct genl_family *dst = nl_object_priv(_dst);
+ struct genl_family *src = nl_object_priv(_src);
+ struct genl_family_op *ops;
+ int err;
+
+ nl_list_for_each_entry(ops, &src->gf_ops, o_list) {
+ err = genl_family_add_op(dst, ops->o_id, ops->o_flags);
+ if (err < 0)
+ return err;
+ }
+
+ return 0;
+}
+
+static int family_compare(struct nl_object *_a, struct nl_object *_b,
+ uint32_t attrs, int flags)
+{
+ struct genl_family *a = (struct genl_family *) _a;
+ struct genl_family *b = (struct genl_family *) _b;
+ int diff = 0;
+
+#define FAM_DIFF(ATTR, EXPR) ATTR_DIFF(attrs, FAMILY_ATTR_##ATTR, a, b, EXPR)
+
+ diff |= FAM_DIFF(ID, a->gf_id != b->gf_id);
+ diff |= FAM_DIFF(VERSION, a->gf_version != b->gf_version);
+ diff |= FAM_DIFF(HDRSIZE, a->gf_hdrsize != b->gf_hdrsize);
+ diff |= FAM_DIFF(MAXATTR, a->gf_maxattr != b->gf_maxattr);
+ diff |= FAM_DIFF(NAME, strcmp(a->gf_name, b->gf_name));
+
+#undef FAM_DIFF
+
+ return diff;
+}
+
+
+/**
+ * @name Family Object
+ * @{
+ */
+
+struct genl_family *genl_family_alloc(void)
+{
+ return (struct genl_family *) nl_object_alloc(&genl_family_ops);
+}
+
+void genl_family_put(struct genl_family *family)
+{
+ nl_object_put((struct nl_object *) family);
+}
+
+/** @} */
+
+
+int genl_family_add_op(struct genl_family *family, int id, int flags)
+{
+ struct genl_family_op *op;
+
+ op = calloc(1, sizeof(*op));
+ if (op == NULL)
+ return -NLE_NOMEM;
+
+ op->o_id = id;
+ op->o_flags = flags;
+
+ nl_list_add_tail(&op->o_list, &family->gf_ops);
+ family->ce_mask |= FAMILY_ATTR_OPS;
+
+ return 0;
+}
+
+/** @} */
+
+/** @cond SKIP */
+struct nl_object_ops genl_family_ops = {
+ .oo_name = "genl/family",
+ .oo_size = sizeof(struct genl_family),
+ .oo_constructor = family_constructor,
+ .oo_free_data = family_free_data,
+ .oo_clone = family_clone,
+ .oo_compare = family_compare,
+ .oo_id_attrs = FAMILY_ATTR_ID,
+};
+/** @endcond */
+
+/** @} */
--- /dev/null
+/*
+ * lib/genl/mngt.c Generic Netlink Management
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation version 2.1
+ * of the License.
+ *
+ * Copyright (c) 2003-2008 Thomas Graf <tgraf@suug.ch>
+ */
+
+/**
+ * @ingroup genl
+ * @defgroup genl_mngt Management
+ *
+ * @par 1) Registering a generic netlink module
+ * @code
+ * #include <netlink/genl/mngt.h>
+ *
+ * // First step is to define all the commands being used in
+ * // particular generic netlink family. The ID and name are
+ * // mandatory to be filled out. A callback function and
+ * // most the attribute policy that comes with it must be
+ * // defined for commands expected to be issued towards
+ * // userspace.
+ * static struct genl_cmd foo_cmds[] = {
+ * {
+ * .c_id = FOO_CMD_NEW,
+ * .c_name = "NEWFOO" ,
+ * .c_maxattr = FOO_ATTR_MAX,
+ * .c_attr_policy = foo_policy,
+ * .c_msg_parser = foo_msg_parser,
+ * },
+ * {
+ * .c_id = FOO_CMD_DEL,
+ * .c_name = "DELFOO" ,
+ * },
+ * };
+ *
+ * // The list of commands must then be integrated into a
+ * // struct genl_ops serving as handle for this particular
+ * // family.
+ * static struct genl_ops my_genl_ops = {
+ * .o_cmds = foo_cmds,
+ * .o_ncmds = ARRAY_SIZE(foo_cmds),
+ * };
+ *
+ * // Using the above struct genl_ops an arbitary number of
+ * // cache handles can be associated to it.
+ * //
+ * // The macro GENL_HDRSIZE() must be used to specify the
+ * // length of the header to automatically take headers on
+ * // generic layers into account.
+ * //
+ * // The macro GENL_FAMILY() is used to represent the generic
+ * // netlink family id.
+ * static struct nl_cache_ops genl_foo_ops = {
+ * .co_name = "genl/foo",
+ * .co_hdrsize = GENL_HDRSIZE(sizeof(struct my_hdr)),
+ * .co_msgtypes = GENL_FAMILY(GENL_ID_GENERATE, "foo"),
+ * .co_genl = &my_genl_ops,
+ * .co_protocol = NETLINK_GENERIC,
+ * .co_request_update = foo_request_update,
+ * .co_obj_ops = &genl_foo_ops,
+ * };
+ *
+ * // Finally each cache handle for a generic netlink family
+ * // must be registered using genl_register().
+ * static void __init foo_init(void)
+ * {
+ * genl_register(&genl_foo_ops);
+ * }
+ *
+ * // ... respectively unregsted again.
+ * static void __exit foo_exit(void)
+ * {
+ * genl_unregister(&genl_foo_ops);
+ * }
+ * @endcode
+ * @{
+ */
+
+#include <netlink-generic.h>
+#include <netlink/netlink.h>
+#include <netlink/genl/genl.h>
+#include <netlink/genl/mngt.h>
+#include <netlink/genl/family.h>
+#include <netlink/genl/ctrl.h>
+#include <netlink/utils.h>
+
+static NL_LIST_HEAD(genl_ops_list);
+
+static int genl_msg_parser(struct nl_cache_ops *ops, struct sockaddr_nl *who,
+ struct nlmsghdr *nlh, struct nl_parser_param *pp)
+{
+ int i, err;
+ struct genlmsghdr *ghdr;
+ struct genl_cmd *cmd;
+
+ ghdr = nlmsg_data(nlh);
+
+ if (ops->co_genl == NULL)
+ BUG();
+
+ for (i = 0; i < ops->co_genl->o_ncmds; i++) {
+ cmd = &ops->co_genl->o_cmds[i];
+ if (cmd->c_id == ghdr->cmd)
+ goto found;
+ }
+
+ err = -NLE_MSGTYPE_NOSUPPORT;
+ goto errout;
+
+found:
+ if (cmd->c_msg_parser == NULL)
+ err = -NLE_OPNOTSUPP;
+ else {
+ struct nlattr *tb[cmd->c_maxattr + 1];
+ struct genl_info info = {
+ .who = who,
+ .nlh = nlh,
+ .genlhdr = ghdr,
+ .userhdr = genlmsg_data(ghdr),
+ .attrs = tb,
+ };
+
+ err = nlmsg_parse(nlh, ops->co_hdrsize, tb, cmd->c_maxattr,
+ cmd->c_attr_policy);
+ if (err < 0)
+ goto errout;
+
+ err = cmd->c_msg_parser(ops, cmd, &info, pp);
+ }
+errout:
+ return err;
+
+}
+
+char *genl_op2name(int family, int op, char *buf, size_t len)
+{
+ struct genl_ops *ops;
+ int i;
+
+ nl_list_for_each_entry(ops, &genl_ops_list, o_list) {
+ if (ops->o_family == family) {
+ for (i = 0; i < ops->o_ncmds; i++) {
+ struct genl_cmd *cmd;
+ cmd = &ops->o_cmds[i];
+
+ if (cmd->c_id == op) {
+ strncpy(buf, cmd->c_name, len - 1);
+ return buf;
+ }
+ }
+ }
+ }
+
+ strncpy(buf, "unknown", len - 1);
+ return NULL;
+}
+
+
+/**
+ * @name Register/Unregister
+ * @{
+ */
+
+/**
+ * Register generic netlink operations
+ * @arg ops cache operations
+ */
+int genl_register(struct nl_cache_ops *ops)
+{
+ int err;
+
+ if (ops->co_protocol != NETLINK_GENERIC) {
+ err = -NLE_PROTO_MISMATCH;
+ goto errout;
+ }
+
+ if (ops->co_hdrsize < GENL_HDRSIZE(0)) {
+ err = -NLE_INVAL;
+ goto errout;
+ }
+
+ if (ops->co_genl == NULL) {
+ err = -NLE_INVAL;
+ goto errout;
+ }
+
+ ops->co_genl->o_cache_ops = ops;
+ ops->co_genl->o_name = ops->co_msgtypes[0].mt_name;
+ ops->co_genl->o_family = ops->co_msgtypes[0].mt_id;
+ ops->co_msg_parser = genl_msg_parser;
+
+ /* FIXME: check for dup */
+
+ nl_list_add_tail(&ops->co_genl->o_list, &genl_ops_list);
+
+ err = nl_cache_mngt_register(ops);
+errout:
+ return err;
+}
+
+/**
+ * Unregister generic netlink operations
+ * @arg ops cache operations
+ */
+void genl_unregister(struct nl_cache_ops *ops)
+{
+ nl_cache_mngt_unregister(ops);
+ nl_list_del(&ops->co_genl->o_list);
+}
+
+/** @} */
+
+/**
+ * @name Resolving ID/Name
+ * @{
+ */
+#ifdef disabled
+static int __genl_ops_resolve(struct nl_cache *ctrl, struct genl_ops *ops)
+{
+ struct genl_family *family;
+
+ family = genl_ctrl_search_by_name(ctrl, ops->o_name);
+ if (family != NULL) {
+ ops->o_id = genl_family_get_id(family);
+ genl_family_put(family);
+
+ return 0;
+ }
+
+ return -NLE_OBJ_NOTFOUND;
+}
+
+int genl_ops_resolve(struct nl_sock *sk, struct genl_ops *ops)
+{
+ struct nl_cache *ctrl;
+ int err;
+
+ if ((err = genl_ctrl_alloc_cache(sk, &ctrl)) < 0)
+ goto errout;
+
+ err = __genl_ops_resolve(ctrl, ops);
+
+ nl_cache_free(ctrl);
+errout:
+ return err;
+}
+
+int genl_mngt_resolve(struct nl_sock *sk)
+{
+ struct nl_cache *ctrl;
+ struct genl_ops *ops;
+ int err = 0;
+
+ if ((err = genl_ctrl_alloc_cache(sk, &ctrl)) < 0)
+ goto errout;
+
+ nl_list_for_each_entry(ops, &genl_ops_list, o_list) {
+ err = __genl_ops_resolve(ctrl, ops);
+ }
+
+ nl_cache_free(ctrl);
+errout:
+ return err;
+}
+#endif
+/** @} */
+
+
+/** @} */
--- /dev/null
+/*
+ * lib/handlers.c default netlink message handlers
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation version 2.1
+ * of the License.
+ *
+ * Copyright (c) 2003-2008 Thomas Graf <tgraf@suug.ch>
+ */
+
+/**
+ * @ingroup core
+ * @defgroup cb Callbacks/Customization
+ *
+ * @details
+ * @par 1) Setting up a callback set
+ * @code
+ * // Allocate a callback set and initialize it to the verbose default set
+ * struct nl_cb *cb = nl_cb_alloc(NL_CB_VERBOSE);
+ *
+ * // Modify the set to call my_func() for all valid messages
+ * nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, my_func, NULL);
+ *
+ * // Set the error message handler to the verbose default implementation
+ * // and direct it to print all errors to the given file descriptor.
+ * FILE *file = fopen(...);
+ * nl_cb_err(cb, NL_CB_VERBOSE, NULL, file);
+ * @endcode
+ * @{
+ */
+
+#include <netlink-local.h>
+#include <netlink/netlink.h>
+#include <netlink/utils.h>
+#include <netlink/msg.h>
+#include <netlink/handlers.h>
+
+/**
+ * @name Callback Handle Management
+ * @{
+ */
+
+/**
+ * Allocate a new callback handle
+ * @arg kind callback kind to be used for initialization
+ * @return Newly allocated callback handle or NULL
+ */
+struct nl_cb *nl_cb_alloc(enum nl_cb_kind kind)
+{
+ int i;
+ struct nl_cb *cb;
+
+ if (kind < 0 || kind > NL_CB_KIND_MAX)
+ return NULL;
+
+ cb = calloc(1, sizeof(*cb));
+ if (!cb)
+ return NULL;
+
+ cb->cb_refcnt = 1;
+
+ for (i = 0; i <= NL_CB_TYPE_MAX; i++)
+ nl_cb_set(cb, i, kind, NULL, NULL);
+
+ nl_cb_err(cb, kind, NULL, NULL);
+
+ return cb;
+}
+
+/**
+ * Clone an existing callback handle
+ * @arg orig original callback handle
+ * @return Newly allocated callback handle being a duplicate of
+ * orig or NULL
+ */
+struct nl_cb *nl_cb_clone(struct nl_cb *orig)
+{
+ struct nl_cb *cb;
+
+ cb = nl_cb_alloc(NL_CB_DEFAULT);
+ if (!cb)
+ return NULL;
+
+ memcpy(cb, orig, sizeof(*orig));
+ cb->cb_refcnt = 1;
+
+ return cb;
+}
+
+void nl_cb_put(struct nl_cb *cb)
+{
+ if (!cb)
+ return;
+
+ cb->cb_refcnt--;
+
+ if (cb->cb_refcnt < 0)
+ BUG();
+
+ if (cb->cb_refcnt <= 0)
+ free(cb);
+}
+
+/** @} */
+
+/**
+ * @name Callback Setup
+ * @{
+ */
+
+/**
+ * Set up a callback
+ * @arg cb callback set
+ * @arg type callback to modify
+ * @arg kind kind of implementation
+ * @arg func callback function (NL_CB_CUSTOM)
+ * @arg arg argument passed to callback
+ *
+ * @return 0 on success or a negative error code
+ */
+int nl_cb_set(struct nl_cb *cb, enum nl_cb_type type, enum nl_cb_kind kind,
+ nl_recvmsg_msg_cb_t func, void *arg)
+{
+ if (type < 0 || type > NL_CB_TYPE_MAX)
+ return -NLE_RANGE;
+
+ if (kind < 0 || kind > NL_CB_KIND_MAX)
+ return -NLE_RANGE;
+
+ if (kind == NL_CB_CUSTOM) {
+ cb->cb_set[type] = func;
+ cb->cb_args[type] = arg;
+ }
+
+ return 0;
+}
+
+/**
+ * Set up an error callback
+ * @arg cb callback set
+ * @arg kind kind of callback
+ * @arg func callback function
+ * @arg arg argument to be passed to callback function
+ */
+int nl_cb_err(struct nl_cb *cb, enum nl_cb_kind kind,
+ nl_recvmsg_err_cb_t func, void *arg)
+{
+ if (kind < 0 || kind > NL_CB_KIND_MAX)
+ return -NLE_RANGE;
+
+ if (kind == NL_CB_CUSTOM) {
+ cb->cb_err = func;
+ cb->cb_err_arg = arg;
+ }
+
+ return 0;
+}
+
+/** @} */
+
+/** @} */
--- /dev/null
+#ifndef __LINUX_GENERIC_NETLINK_H
+#define __LINUX_GENERIC_NETLINK_H
+
+#include <linux/types.h>
+#include <linux/netlink.h>
+
+#define GENL_NAMSIZ 16 /* length of family name */
+
+#define GENL_MIN_ID NLMSG_MIN_TYPE
+#define GENL_MAX_ID 1023
+
+struct genlmsghdr {
+ __u8 cmd;
+ __u8 version;
+ __u16 reserved;
+};
+
+#define GENL_HDRLEN NLMSG_ALIGN(sizeof(struct genlmsghdr))
+
+#define GENL_ADMIN_PERM 0x01
+#define GENL_CMD_CAP_DO 0x02
+#define GENL_CMD_CAP_DUMP 0x04
+#define GENL_CMD_CAP_HASPOL 0x08
+
+/*
+ * List of reserved static generic netlink identifiers:
+ */
+#define GENL_ID_GENERATE 0
+#define GENL_ID_CTRL NLMSG_MIN_TYPE
+
+/**************************************************************************
+ * Controller
+ **************************************************************************/
+
+enum {
+ CTRL_CMD_UNSPEC,
+ CTRL_CMD_NEWFAMILY,
+ CTRL_CMD_DELFAMILY,
+ CTRL_CMD_GETFAMILY,
+ CTRL_CMD_NEWOPS,
+ CTRL_CMD_DELOPS,
+ CTRL_CMD_GETOPS,
+ CTRL_CMD_NEWMCAST_GRP,
+ CTRL_CMD_DELMCAST_GRP,
+ CTRL_CMD_GETMCAST_GRP, /* unused */
+ __CTRL_CMD_MAX,
+};
+
+#define CTRL_CMD_MAX (__CTRL_CMD_MAX - 1)
+
+enum {
+ CTRL_ATTR_UNSPEC,
+ CTRL_ATTR_FAMILY_ID,
+ CTRL_ATTR_FAMILY_NAME,
+ CTRL_ATTR_VERSION,
+ CTRL_ATTR_HDRSIZE,
+ CTRL_ATTR_MAXATTR,
+ CTRL_ATTR_OPS,
+ CTRL_ATTR_MCAST_GROUPS,
+ __CTRL_ATTR_MAX,
+};
+
+#define CTRL_ATTR_MAX (__CTRL_ATTR_MAX - 1)
+
+enum {
+ CTRL_ATTR_OP_UNSPEC,
+ CTRL_ATTR_OP_ID,
+ CTRL_ATTR_OP_FLAGS,
+ __CTRL_ATTR_OP_MAX,
+};
+
+#define CTRL_ATTR_OP_MAX (__CTRL_ATTR_OP_MAX - 1)
+
+enum {
+ CTRL_ATTR_MCAST_GRP_UNSPEC,
+ CTRL_ATTR_MCAST_GRP_NAME,
+ CTRL_ATTR_MCAST_GRP_ID,
+ __CTRL_ATTR_MCAST_GRP_MAX,
+};
+
+#define CTRL_ATTR_MCAST_GRP_MAX (__CTRL_ATTR_MCAST_GRP_MAX - 1)
+
+#endif /* __LINUX_GENERIC_NETLINK_H */
--- /dev/null
+/*
+ * INET An implementation of the TCP/IP protocol suite for the LINUX
+ * operating system. INET is implemented using the BSD Socket
+ * interface as the means of communication with the user level.
+ *
+ * Global definitions for the INET interface module.
+ *
+ * Version: @(#)if.h 1.0.2 04/18/93
+ *
+ * Authors: Original taken from Berkeley UNIX 4.3, (c) UCB 1982-1988
+ * Ross Biro
+ * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+#ifndef _LINUX_IF_H
+#define _LINUX_IF_H
+
+#include <linux/types.h> /* for "__kernel_caddr_t" et al */
+
+#define IFNAMSIZ 16
+
+/* Standard interface flags (netdevice->flags). */
+#define IFF_UP 0x1 /* interface is up */
+#define IFF_BROADCAST 0x2 /* broadcast address valid */
+#define IFF_DEBUG 0x4 /* turn on debugging */
+#define IFF_LOOPBACK 0x8 /* is a loopback net */
+#define IFF_POINTOPOINT 0x10 /* interface is has p-p link */
+#define IFF_NOTRAILERS 0x20 /* avoid use of trailers */
+#define IFF_RUNNING 0x40 /* interface RFC2863 OPER_UP */
+#define IFF_NOARP 0x80 /* no ARP protocol */
+#define IFF_PROMISC 0x100 /* receive all packets */
+#define IFF_ALLMULTI 0x200 /* receive all multicast packets*/
+
+#define IFF_MASTER 0x400 /* master of a load balancer */
+#define IFF_SLAVE 0x800 /* slave of a load balancer */
+
+#define IFF_MULTICAST 0x1000 /* Supports multicast */
+
+#define IFF_PORTSEL 0x2000 /* can set media type */
+#define IFF_AUTOMEDIA 0x4000 /* auto media select active */
+#define IFF_DYNAMIC 0x8000 /* dialup device with changing addresses*/
+
+#define IFF_LOWER_UP 0x10000 /* driver signals L1 up */
+#define IFF_DORMANT 0x20000 /* driver signals dormant */
+
+#define IFF_ECHO 0x40000 /* echo sent packets */
+
+#define IFF_VOLATILE (IFF_LOOPBACK|IFF_POINTOPOINT|IFF_BROADCAST|IFF_ECHO|\
+ IFF_MASTER|IFF_SLAVE|IFF_RUNNING|IFF_LOWER_UP|IFF_DORMANT)
+
+/* Private (from user) interface flags (netdevice->priv_flags). */
+#define IFF_802_1Q_VLAN 0x1 /* 802.1Q VLAN device. */
+#define IFF_EBRIDGE 0x2 /* Ethernet bridging device. */
+#define IFF_SLAVE_INACTIVE 0x4 /* bonding slave not the curr. active */
+#define IFF_MASTER_8023AD 0x8 /* bonding master, 802.3ad. */
+#define IFF_MASTER_ALB 0x10 /* bonding master, balance-alb. */
+#define IFF_BONDING 0x20 /* bonding master or slave */
+#define IFF_SLAVE_NEEDARP 0x40 /* need ARPs for validation */
+#define IFF_ISATAP 0x80 /* ISATAP interface (RFC4214) */
+
+#define IF_GET_IFACE 0x0001 /* for querying only */
+#define IF_GET_PROTO 0x0002
+
+/* For definitions see hdlc.h */
+#define IF_IFACE_V35 0x1000 /* V.35 serial interface */
+#define IF_IFACE_V24 0x1001 /* V.24 serial interface */
+#define IF_IFACE_X21 0x1002 /* X.21 serial interface */
+#define IF_IFACE_T1 0x1003 /* T1 telco serial interface */
+#define IF_IFACE_E1 0x1004 /* E1 telco serial interface */
+#define IF_IFACE_SYNC_SERIAL 0x1005 /* can't be set by software */
+#define IF_IFACE_X21D 0x1006 /* X.21 Dual Clocking (FarSite) */
+
+/* For definitions see hdlc.h */
+#define IF_PROTO_HDLC 0x2000 /* raw HDLC protocol */
+#define IF_PROTO_PPP 0x2001 /* PPP protocol */
+#define IF_PROTO_CISCO 0x2002 /* Cisco HDLC protocol */
+#define IF_PROTO_FR 0x2003 /* Frame Relay protocol */
+#define IF_PROTO_FR_ADD_PVC 0x2004 /* Create FR PVC */
+#define IF_PROTO_FR_DEL_PVC 0x2005 /* Delete FR PVC */
+#define IF_PROTO_X25 0x2006 /* X.25 */
+#define IF_PROTO_HDLC_ETH 0x2007 /* raw HDLC, Ethernet emulation */
+#define IF_PROTO_FR_ADD_ETH_PVC 0x2008 /* Create FR Ethernet-bridged PVC */
+#define IF_PROTO_FR_DEL_ETH_PVC 0x2009 /* Delete FR Ethernet-bridged PVC */
+#define IF_PROTO_FR_PVC 0x200A /* for reading PVC status */
+#define IF_PROTO_FR_ETH_PVC 0x200B
+#define IF_PROTO_RAW 0x200C /* RAW Socket */
+
+/* RFC 2863 operational status */
+enum {
+ IF_OPER_UNKNOWN,
+ IF_OPER_NOTPRESENT,
+ IF_OPER_DOWN,
+ IF_OPER_LOWERLAYERDOWN,
+ IF_OPER_TESTING,
+ IF_OPER_DORMANT,
+ IF_OPER_UP,
+};
+
+/* link modes */
+enum {
+ IF_LINK_MODE_DEFAULT,
+ IF_LINK_MODE_DORMANT, /* limit upward transition to dormant */
+};
+
+/*
+ * Device mapping structure. I'd just gone off and designed a
+ * beautiful scheme using only loadable modules with arguments
+ * for driver options and along come the PCMCIA people 8)
+ *
+ * Ah well. The get() side of this is good for WDSETUP, and it'll
+ * be handy for debugging things. The set side is fine for now and
+ * being very small might be worth keeping for clean configuration.
+ */
+
+struct ifmap
+{
+ unsigned long mem_start;
+ unsigned long mem_end;
+ unsigned short base_addr;
+ unsigned char irq;
+ unsigned char dma;
+ unsigned char port;
+ /* 3 bytes spare */
+};
+
+
+#endif /* _LINUX_IF_H */
--- /dev/null
+#ifndef __LINUX_IF_ADDR_H
+#define __LINUX_IF_ADDR_H
+
+#include <linux/netlink.h>
+
+struct ifaddrmsg
+{
+ __u8 ifa_family;
+ __u8 ifa_prefixlen; /* The prefix length */
+ __u8 ifa_flags; /* Flags */
+ __u8 ifa_scope; /* Address scope */
+ __u32 ifa_index; /* Link index */
+};
+
+/*
+ * Important comment:
+ * IFA_ADDRESS is prefix address, rather than local interface address.
+ * It makes no difference for normally configured broadcast interfaces,
+ * but for point-to-point IFA_ADDRESS is DESTINATION address,
+ * local address is supplied in IFA_LOCAL attribute.
+ */
+enum
+{
+ IFA_UNSPEC,
+ IFA_ADDRESS,
+ IFA_LOCAL,
+ IFA_LABEL,
+ IFA_BROADCAST,
+ IFA_ANYCAST,
+ IFA_CACHEINFO,
+ IFA_MULTICAST,
+ __IFA_MAX,
+};
+
+#define IFA_MAX (__IFA_MAX - 1)
+
+/* ifa_flags */
+#define IFA_F_SECONDARY 0x01
+#define IFA_F_TEMPORARY IFA_F_SECONDARY
+
+#define IFA_F_NODAD 0x02
+#define IFA_F_OPTIMISTIC 0x04
+#define IFA_F_HOMEADDRESS 0x10
+#define IFA_F_DEPRECATED 0x20
+#define IFA_F_TENTATIVE 0x40
+#define IFA_F_PERMANENT 0x80
+
+struct ifa_cacheinfo
+{
+ __u32 ifa_prefered;
+ __u32 ifa_valid;
+ __u32 cstamp; /* created timestamp, hundredths of seconds */
+ __u32 tstamp; /* updated timestamp, hundredths of seconds */
+};
+
+/* backwards compatibility for userspace */
+#ifndef __KERNEL__
+#define IFA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ifaddrmsg))))
+#define IFA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ifaddrmsg))
+#endif
+
+#endif
--- /dev/null
+#ifndef __LINUX_NETLINK_H
+#define __LINUX_NETLINK_H
+
+#include <linux/socket.h> /* for sa_family_t */
+#include <linux/types.h>
+
+#define NETLINK_ROUTE 0 /* Routing/device hook */
+#define NETLINK_UNUSED 1 /* Unused number */
+#define NETLINK_USERSOCK 2 /* Reserved for user mode socket protocols */
+#define NETLINK_FIREWALL 3 /* Firewalling hook */
+#define NETLINK_INET_DIAG 4 /* INET socket monitoring */
+#define NETLINK_NFLOG 5 /* netfilter/iptables ULOG */
+#define NETLINK_XFRM 6 /* ipsec */
+#define NETLINK_SELINUX 7 /* SELinux event notifications */
+#define NETLINK_ISCSI 8 /* Open-iSCSI */
+#define NETLINK_AUDIT 9 /* auditing */
+#define NETLINK_FIB_LOOKUP 10
+#define NETLINK_CONNECTOR 11
+#define NETLINK_NETFILTER 12 /* netfilter subsystem */
+#define NETLINK_IP6_FW 13
+#define NETLINK_DNRTMSG 14 /* DECnet routing messages */
+#define NETLINK_KOBJECT_UEVENT 15 /* Kernel messages to userspace */
+#define NETLINK_GENERIC 16
+/* leave room for NETLINK_DM (DM Events) */
+#define NETLINK_SCSITRANSPORT 18 /* SCSI Transports */
+#define NETLINK_ECRYPTFS 19
+
+#define MAX_LINKS 32
+
+struct sockaddr_nl
+{
+ sa_family_t nl_family; /* AF_NETLINK */
+ unsigned short nl_pad; /* zero */
+ __u32 nl_pid; /* port ID */
+ __u32 nl_groups; /* multicast groups mask */
+};
+
+struct nlmsghdr
+{
+ __u32 nlmsg_len; /* Length of message including header */
+ __u16 nlmsg_type; /* Message content */
+ __u16 nlmsg_flags; /* Additional flags */
+ __u32 nlmsg_seq; /* Sequence number */
+ __u32 nlmsg_pid; /* Sending process port ID */
+};
+
+/* Flags values */
+
+#define NLM_F_REQUEST 1 /* It is request message. */
+#define NLM_F_MULTI 2 /* Multipart message, terminated by NLMSG_DONE */
+#define NLM_F_ACK 4 /* Reply with ack, with zero or error code */
+#define NLM_F_ECHO 8 /* Echo this request */
+
+/* Modifiers to GET request */
+#define NLM_F_ROOT 0x100 /* specify tree root */
+#define NLM_F_MATCH 0x200 /* return all matching */
+#define NLM_F_ATOMIC 0x400 /* atomic GET */
+#define NLM_F_DUMP (NLM_F_ROOT|NLM_F_MATCH)
+
+/* Modifiers to NEW request */
+#define NLM_F_REPLACE 0x100 /* Override existing */
+#define NLM_F_EXCL 0x200 /* Do not touch, if it exists */
+#define NLM_F_CREATE 0x400 /* Create, if it does not exist */
+#define NLM_F_APPEND 0x800 /* Add to end of list */
+
+/*
+ 4.4BSD ADD NLM_F_CREATE|NLM_F_EXCL
+ 4.4BSD CHANGE NLM_F_REPLACE
+
+ True CHANGE NLM_F_CREATE|NLM_F_REPLACE
+ Append NLM_F_CREATE
+ Check NLM_F_EXCL
+ */
+
+#define NLMSG_ALIGNTO 4
+#define NLMSG_ALIGN(len) ( ((len)+NLMSG_ALIGNTO-1) & ~(NLMSG_ALIGNTO-1) )
+#define NLMSG_HDRLEN ((int) NLMSG_ALIGN(sizeof(struct nlmsghdr)))
+#define NLMSG_LENGTH(len) ((len)+NLMSG_ALIGN(NLMSG_HDRLEN))
+#define NLMSG_SPACE(len) NLMSG_ALIGN(NLMSG_LENGTH(len))
+#define NLMSG_DATA(nlh) ((void*)(((char*)nlh) + NLMSG_LENGTH(0)))
+#define NLMSG_NEXT(nlh,len) ((len) -= NLMSG_ALIGN((nlh)->nlmsg_len), \
+ (struct nlmsghdr*)(((char*)(nlh)) + NLMSG_ALIGN((nlh)->nlmsg_len)))
+#define NLMSG_OK(nlh,len) ((len) >= (int)sizeof(struct nlmsghdr) && \
+ (nlh)->nlmsg_len >= sizeof(struct nlmsghdr) && \
+ (nlh)->nlmsg_len <= (len))
+#define NLMSG_PAYLOAD(nlh,len) ((nlh)->nlmsg_len - NLMSG_SPACE((len)))
+
+#define NLMSG_NOOP 0x1 /* Nothing. */
+#define NLMSG_ERROR 0x2 /* Error */
+#define NLMSG_DONE 0x3 /* End of a dump */
+#define NLMSG_OVERRUN 0x4 /* Data lost */
+
+#define NLMSG_MIN_TYPE 0x10 /* < 0x10: reserved control messages */
+
+struct nlmsgerr
+{
+ int error;
+ struct nlmsghdr msg;
+};
+
+#define NETLINK_ADD_MEMBERSHIP 1
+#define NETLINK_DROP_MEMBERSHIP 2
+#define NETLINK_PKTINFO 3
+
+struct nl_pktinfo
+{
+ __u32 group;
+};
+
+#define NET_MAJOR 36 /* Major 36 is reserved for networking */
+
+enum {
+ NETLINK_UNCONNECTED = 0,
+ NETLINK_CONNECTED,
+};
+
+/*
+ * <------- NLA_HDRLEN ------> <-- NLA_ALIGN(payload)-->
+ * +---------------------+- - -+- - - - - - - - - -+- - -+
+ * | Header | Pad | Payload | Pad |
+ * | (struct nlattr) | ing | | ing |
+ * +---------------------+- - -+- - - - - - - - - -+- - -+
+ * <-------------- nlattr->nla_len -------------->
+ */
+
+struct nlattr
+{
+ __u16 nla_len;
+ __u16 nla_type;
+};
+
+/*
+ * nla_type (16 bits)
+ * +---+---+-------------------------------+
+ * | N | O | Attribute Type |
+ * +---+---+-------------------------------+
+ * N := Carries nested attributes
+ * O := Payload stored in network byte order
+ *
+ * Note: The N and O flag are mutually exclusive.
+ */
+#define NLA_F_NESTED (1 << 15)
+#define NLA_F_NET_BYTEORDER (1 << 14)
+#define NLA_TYPE_MASK ~(NLA_F_NESTED | NLA_F_NET_BYTEORDER)
+
+#define NLA_ALIGNTO 4
+#define NLA_ALIGN(len) (((len) + NLA_ALIGNTO - 1) & ~(NLA_ALIGNTO - 1))
+#define NLA_HDRLEN ((int) NLA_ALIGN(sizeof(struct nlattr)))
+
+#endif /* __LINUX_NETLINK_H */
--- /dev/null
+/*
+ * netlink-generic.h Local Generic Netlink Interface
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation version 2.1
+ * of the License.
+ *
+ * Copyright (c) 2003-2006 Thomas Graf <tgraf@suug.ch>
+ */
+
+#ifndef NETLINK_GENL_PRIV_H_
+#define NETLINK_GENL_PRIV_H_
+
+#include <netlink-local.h>
+#include <netlink/netlink.h>
+
+#define GENL_HDRSIZE(hdrlen) (GENL_HDRLEN + (hdrlen))
+
+#endif
--- /dev/null
+/*
+ * netlink-local.h Local Netlink Interface
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation version 2.1
+ * of the License.
+ *
+ * Copyright (c) 2003-2008 Thomas Graf <tgraf@suug.ch>
+ */
+
+#ifndef NETLINK_LOCAL_H_
+#define NETLINK_LOCAL_H_
+#define _GNU_SOURCE
+
+#include <stdio.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <math.h>
+#include <time.h>
+#include <stdarg.h>
+#include <ctype.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <inttypes.h>
+#include <assert.h>
+#include <limits.h>
+
+#include <arpa/inet.h>
+#include <netdb.h>
+
+#ifndef SOL_NETLINK
+#define SOL_NETLINK 270
+#endif
+
+#include <linux/types.h>
+
+/* local header copies */
+#include <linux/if.h>
+#include <linux/if_arp.h>
+#include <linux/if_ether.h>
+#include <linux/pkt_sched.h>
+#include <linux/pkt_cls.h>
+#include <linux/gen_stats.h>
+
+#include <netlink/netlink.h>
+#include <netlink/handlers.h>
+#include <netlink/cache.h>
+#include <netlink/object-api.h>
+#include <netlink/cache-api.h>
+#include <netlink-types.h>
+
+struct trans_tbl {
+ int i;
+ const char *a;
+};
+
+#define __ADD(id, name) { .i = id, .a = #name },
+
+struct trans_list {
+ int i;
+ char *a;
+ struct nl_list_head list;
+};
+
+#define NL_DEBUG 1
+
+#define NL_DBG(LVL,FMT,ARG...) \
+ do {} while (0)
+
+#define BUG() \
+ do { \
+ fprintf(stderr, "BUG: %s:%d\n", \
+ __FILE__, __LINE__); \
+ assert(0); \
+ } while (0)
+
+extern int __nl_read_num_str_file(const char *path,
+ int (*cb)(long, const char *));
+
+extern int __trans_list_add(int, const char *, struct nl_list_head *);
+extern void __trans_list_clear(struct nl_list_head *);
+
+extern char *__type2str(int, char *, size_t, struct trans_tbl *, size_t);
+extern int __str2type(const char *, struct trans_tbl *, size_t);
+
+extern char *__list_type2str(int, char *, size_t, struct nl_list_head *);
+extern int __list_str2type(const char *, struct nl_list_head *);
+
+extern char *__flags2str(int, char *, size_t, struct trans_tbl *, size_t);
+extern int __str2flags(const char *, struct trans_tbl *, size_t);
+
+extern void dump_from_ops(struct nl_object *, struct nl_dump_params *);
+
+static inline struct nl_cache *dp_cache(struct nl_object *obj)
+{
+ if (obj->ce_cache == NULL)
+ return nl_cache_mngt_require(obj->ce_ops->oo_name);
+
+ return obj->ce_cache;
+}
+
+static inline int nl_cb_call(struct nl_cb *cb, int type, struct nl_msg *msg)
+{
+ return cb->cb_set[type](msg, cb->cb_args[type]);
+}
+
+#define ARRAY_SIZE(X) (sizeof(X) / sizeof((X)[0]))
+#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
+
+#define __init __attribute__ ((constructor))
+#define __exit __attribute__ ((destructor))
+#undef __deprecated
+#define __deprecated __attribute__ ((deprecated))
+
+#define min(x,y) ({ \
+ typeof(x) _x = (x); \
+ typeof(y) _y = (y); \
+ (void) (&_x == &_y); \
+ _x < _y ? _x : _y; })
+
+#define max(x,y) ({ \
+ typeof(x) _x = (x); \
+ typeof(y) _y = (y); \
+ (void) (&_x == &_y); \
+ _x > _y ? _x : _y; })
+
+extern int nl_cache_parse(struct nl_cache_ops *, struct sockaddr_nl *,
+ struct nlmsghdr *, struct nl_parser_param *);
+
+
+static inline char *nl_cache_name(struct nl_cache *cache)
+{
+ return cache->c_ops ? cache->c_ops->co_name : "unknown";
+}
+
+#define GENL_FAMILY(id, name) \
+ { \
+ { id, NL_ACT_UNSPEC, name }, \
+ END_OF_MSGTYPES_LIST, \
+ }
+
+static inline int wait_for_ack(struct nl_sock *sk)
+{
+ if (sk->s_flags & NL_NO_AUTO_ACK)
+ return 0;
+ else
+ return nl_wait_for_ack(sk);
+}
+
+#endif
--- /dev/null
+/*
+ * netlink-types.h Netlink Types (Private)
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation version 2.1
+ * of the License.
+ *
+ * Copyright (c) 2003-2008 Thomas Graf <tgraf@suug.ch>
+ */
+
+#ifndef NETLINK_LOCAL_TYPES_H_
+#define NETLINK_LOCAL_TYPES_H_
+
+#include <netlink/list.h>
+
+struct nl_cache_ops;
+struct nl_sock;
+struct nl_object;
+
+struct nl_cache
+{
+ struct nl_list_head c_items;
+ int c_nitems;
+ int c_iarg1;
+ int c_iarg2;
+ struct nl_cache_ops * c_ops;
+};
+
+struct nl_cache_assoc
+{
+ struct nl_cache * ca_cache;
+ change_func_t ca_change;
+};
+
+struct nl_cache_mngr
+{
+ int cm_protocol;
+ int cm_flags;
+ int cm_nassocs;
+ struct nl_sock * cm_handle;
+ struct nl_cache_assoc * cm_assocs;
+};
+
+struct nl_parser_param;
+
+#define LOOSE_COMPARISON 1
+
+
+struct nl_data
+{
+ size_t d_size;
+ void * d_data;
+};
+
+struct nl_addr
+{
+ int a_family;
+ unsigned int a_maxsize;
+ unsigned int a_len;
+ int a_prefixlen;
+ int a_refcnt;
+ char a_addr[0];
+};
+
+#define IFQDISCSIZ 32
+
+#define GENL_OP_HAS_POLICY 1
+#define GENL_OP_HAS_DOIT 2
+#define GENL_OP_HAS_DUMPIT 4
+
+struct genl_family_op
+{
+ uint32_t o_id;
+ uint32_t o_flags;
+
+ struct nl_list_head o_list;
+};
+
+
+#endif
--- /dev/null
+/*
+ * netlink/addr.h Abstract Address
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation version 2.1
+ * of the License.
+ *
+ * Copyright (c) 2003-2008 Thomas Graf <tgraf@suug.ch>
+ */
+
+#ifndef NETLINK_ADDR_H_
+#define NETLINK_ADDR_H_
+
+#include <netlink/netlink.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct nl_addr;
+
+/* Creation */
+extern struct nl_addr * nl_addr_alloc(size_t);
+extern struct nl_addr * nl_addr_alloc_attr(struct nlattr *, int);
+extern struct nl_addr * nl_addr_build(int, void *, size_t);
+extern int nl_addr_parse(const char *, int, struct nl_addr **);
+extern struct nl_addr * nl_addr_clone(struct nl_addr *);
+
+/* Destroyage */
+extern void nl_addr_destroy(struct nl_addr *);
+
+/* Usage Management */
+extern struct nl_addr * nl_addr_get(struct nl_addr *);
+extern void nl_addr_put(struct nl_addr *);
+extern int nl_addr_shared(struct nl_addr *);
+
+extern int nl_addr_cmp(struct nl_addr *, struct nl_addr *);
+extern int nl_addr_cmp_prefix(struct nl_addr *, struct nl_addr *);
+extern int nl_addr_iszero(struct nl_addr *);
+extern int nl_addr_valid(char *, int);
+extern int nl_addr_guess_family(struct nl_addr *);
+extern int nl_addr_fill_sockaddr(struct nl_addr *,
+ struct sockaddr *, socklen_t *);
+extern int nl_addr_info(struct nl_addr *, struct addrinfo **);
+extern int nl_addr_resolve(struct nl_addr *addr, char *host, size_t hostlen);
+
+/* Access Functions */
+extern void nl_addr_set_family(struct nl_addr *, int);
+extern int nl_addr_get_family(struct nl_addr *);
+extern int nl_addr_set_binary_addr(struct nl_addr *, void *,
+ size_t);
+extern void * nl_addr_get_binary_addr(struct nl_addr *);
+extern unsigned int nl_addr_get_len(struct nl_addr *);
+extern void nl_addr_set_prefixlen(struct nl_addr *, int);
+extern unsigned int nl_addr_get_prefixlen(struct nl_addr *);
+
+/* Address Family Translations */
+extern char * nl_af2str(int, char *, size_t);
+extern int nl_str2af(const char *);
+
+/* Translations to Strings */
+extern char * nl_addr2str(struct nl_addr *, char *, size_t);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
--- /dev/null
+/*
+ * netlink/attr.h Netlink Attributes
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation version 2.1
+ * of the License.
+ *
+ * Copyright (c) 2003-2008 Thomas Graf <tgraf@suug.ch>
+ */
+
+#ifndef NETLINK_ATTR_H_
+#define NETLINK_ATTR_H_
+
+#include <netlink/netlink.h>
+#include <netlink/object.h>
+#include <netlink/addr.h>
+#include <netlink/data.h>
+#include <netlink/msg.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct nl_msg;
+
+/**
+ * @name Basic Attribute Data Types
+ * @{
+ */
+
+ /**
+ * @ingroup attr
+ * Basic attribute data types
+ *
+ * See \ref attr_datatypes for more details.
+ */
+enum {
+ NLA_UNSPEC, /**< Unspecified type, binary data chunk */
+ NLA_U8, /**< 8 bit integer */
+ NLA_U16, /**< 16 bit integer */
+ NLA_U32, /**< 32 bit integer */
+ NLA_U64, /**< 64 bit integer */
+ NLA_STRING, /**< NUL terminated character string */
+ NLA_FLAG, /**< Flag */
+ NLA_MSECS, /**< Micro seconds (64bit) */
+ NLA_NESTED, /**< Nested attributes */
+ __NLA_TYPE_MAX,
+};
+
+#define NLA_TYPE_MAX (__NLA_TYPE_MAX - 1)
+
+/** @} */
+
+/**
+ * @ingroup attr
+ * Attribute validation policy.
+ *
+ * See \ref attr_datatypes for more details.
+ */
+struct nla_policy {
+ /** Type of attribute or NLA_UNSPEC */
+ uint16_t type;
+
+ /** Minimal length of payload required */
+ uint16_t minlen;
+
+ /** Maximal length of payload allowed */
+ uint16_t maxlen;
+};
+
+/* Attribute parsing */
+extern int nla_ok(const struct nlattr *, int);
+extern struct nlattr * nla_next(const struct nlattr *, int *);
+extern int nla_parse(struct nlattr **, int, struct nlattr *,
+ int, struct nla_policy *);
+extern int nla_validate(struct nlattr *, int, int,
+ struct nla_policy *);
+extern struct nlattr * nla_find(struct nlattr *, int, int);
+
+/* Unspecific attribute */
+extern struct nlattr * nla_reserve(struct nl_msg *, int, int);
+extern int nla_put(struct nl_msg *, int, int, const void *);
+
+/**
+ * nlmsg_find_attr - find a specific attribute in a netlink message
+ * @arg nlh netlink message header
+ * @arg hdrlen length of familiy specific header
+ * @arg attrtype type of attribute to look for
+ *
+ * Returns the first attribute which matches the specified type.
+ */
+static inline struct nlattr *nlmsg_find_attr(struct nlmsghdr *nlh, int hdrlen, int attrtype)
+{
+ return nla_find(nlmsg_attrdata(nlh, hdrlen),
+ nlmsg_attrlen(nlh, hdrlen), attrtype);
+}
+
+
+/**
+ * Return size of attribute whithout padding.
+ * @arg payload Payload length of attribute.
+ *
+ * @code
+ * <-------- nla_attr_size(payload) --------->
+ * +------------------+- - -+- - - - - - - - - +- - -+
+ * | Attribute Header | Pad | Payload | Pad |
+ * +------------------+- - -+- - - - - - - - - +- - -+
+ * @endcode
+ *
+ * @return Size of attribute in bytes without padding.
+ */
+static inline int nla_attr_size(int payload)
+{
+ return NLA_HDRLEN + payload;
+}
+
+/**
+ * Return size of attribute including padding.
+ * @arg payload Payload length of attribute.
+ *
+ * @code
+ * <----------- nla_total_size(payload) ----------->
+ * +------------------+- - -+- - - - - - - - - +- - -+
+ * | Attribute Header | Pad | Payload | Pad |
+ * +------------------+- - -+- - - - - - - - - +- - -+
+ * @endcode
+ *
+ * @return Size of attribute in bytes.
+ */
+static inline int nla_total_size(int payload)
+{
+ return NLA_ALIGN(nla_attr_size(payload));
+}
+
+/**
+ * Return length of padding at the tail of the attribute.
+ * @arg payload Payload length of attribute.
+ *
+ * @code
+ * +------------------+- - -+- - - - - - - - - +- - -+
+ * | Attribute Header | Pad | Payload | Pad |
+ * +------------------+- - -+- - - - - - - - - +- - -+
+ * <--->
+ * @endcode
+ *
+ * @return Length of padding in bytes.
+ */
+static inline int nla_padlen(int payload)
+{
+ return nla_total_size(payload) - nla_attr_size(payload);
+}
+
+/**
+ * Return type of the attribute.
+ * @arg nla Attribute.
+ *
+ * @return Type of attribute.
+ */
+static inline int nla_type(const struct nlattr *nla)
+{
+ return nla->nla_type & NLA_TYPE_MASK;
+}
+
+/**
+ * Return pointer to the payload section.
+ * @arg nla Attribute.
+ *
+ * @return Pointer to start of payload section.
+ */
+static inline void *nla_data(const struct nlattr *nla)
+{
+ return (char *) nla + NLA_HDRLEN;
+}
+
+/**
+ * Return length of the payload .
+ * @arg nla Attribute
+ *
+ * @return Length of payload in bytes.
+ */
+static inline int nla_len(const struct nlattr *nla)
+{
+ return nla->nla_len - NLA_HDRLEN;
+}
+
+/**
+ * Copy attribute payload to another memory area.
+ * @arg dest Pointer to destination memory area.
+ * @arg src Attribute
+ * @arg count Number of bytes to copy at most.
+ *
+ * Note: The number of bytes copied is limited by the length of
+ * the attribute payload.
+ *
+ * @return The number of bytes copied to dest.
+ */
+static inline int nla_memcpy(void *dest, struct nlattr *src, int count)
+{
+ int minlen;
+
+ if (!src)
+ return 0;
+
+ minlen = min_t(int, count, nla_len(src));
+ memcpy(dest, nla_data(src), minlen);
+
+ return minlen;
+}
+
+
+/**
+ * Add abstract data as unspecific attribute to netlink message.
+ * @arg msg Netlink message.
+ * @arg attrtype Attribute type.
+ * @arg data Abstract data object.
+ *
+ * Equivalent to nla_put() except that the length of the payload is
+ * derived from the abstract data object.
+ *
+ * @see nla_put
+ * @return 0 on success or a negative error code.
+ */
+static inline int nla_put_data(struct nl_msg *msg, int attrtype, struct nl_data *data)
+{
+ return nla_put(msg, attrtype, nl_data_get_size(data),
+ nl_data_get(data));
+}
+
+/**
+ * Add abstract address as unspecific attribute to netlink message.
+ * @arg msg Netlink message.
+ * @arg attrtype Attribute type.
+ * @arg addr Abstract address object.
+ *
+ * @see nla_put
+ * @return 0 on success or a negative error code.
+ */
+static inline int nla_put_addr(struct nl_msg *msg, int attrtype, struct nl_addr *addr)
+{
+ return nla_put(msg, attrtype, nl_addr_get_len(addr),
+ nl_addr_get_binary_addr(addr));
+}
+
+/** @} */
+
+/**
+ * @name Integer Attributes
+ */
+
+/**
+ * Add 8 bit integer attribute to netlink message.
+ * @arg msg Netlink message.
+ * @arg attrtype Attribute type.
+ * @arg value Numeric value to store as payload.
+ *
+ * @see nla_put
+ * @return 0 on success or a negative error code.
+ */
+static inline int nla_put_u8(struct nl_msg *msg, int attrtype, uint8_t value)
+{
+ return nla_put(msg, attrtype, sizeof(uint8_t), &value);
+}
+
+/**
+ * Return value of 8 bit integer attribute.
+ * @arg nla 8 bit integer attribute
+ *
+ * @return Payload as 8 bit integer.
+ */
+static inline uint8_t nla_get_u8(struct nlattr *nla)
+{
+ return *(uint8_t *) nla_data(nla);
+}
+
+/**
+ * Add 16 bit integer attribute to netlink message.
+ * @arg msg Netlink message.
+ * @arg attrtype Attribute type.
+ * @arg value Numeric value to store as payload.
+ *
+ * @see nla_put
+ * @return 0 on success or a negative error code.
+ */
+static inline int nla_put_u16(struct nl_msg *msg, int attrtype, uint16_t value)
+{
+ return nla_put(msg, attrtype, sizeof(uint16_t), &value);
+}
+
+/**
+ * Return payload of 16 bit integer attribute.
+ * @arg nla 16 bit integer attribute
+ *
+ * @return Payload as 16 bit integer.
+ */
+static inline uint16_t nla_get_u16(struct nlattr *nla)
+{
+ return *(uint16_t *) nla_data(nla);
+}
+
+/**
+ * Add 32 bit integer attribute to netlink message.
+ * @arg msg Netlink message.
+ * @arg attrtype Attribute type.
+ * @arg value Numeric value to store as payload.
+ *
+ * @see nla_put
+ * @return 0 on success or a negative error code.
+ */
+static inline int nla_put_u32(struct nl_msg *msg, int attrtype, uint32_t value)
+{
+ return nla_put(msg, attrtype, sizeof(uint32_t), &value);
+}
+
+/**
+ * Return payload of 32 bit integer attribute.
+ * @arg nla 32 bit integer attribute.
+ *
+ * @return Payload as 32 bit integer.
+ */
+static inline uint32_t nla_get_u32(struct nlattr *nla)
+{
+ return *(uint32_t *) nla_data(nla);
+}
+
+/**
+ * Add 64 bit integer attribute to netlink message.
+ * @arg msg Netlink message.
+ * @arg attrtype Attribute type.
+ * @arg value Numeric value to store as payload.
+ *
+ * @see nla_put
+ * @return 0 on success or a negative error code.
+ */
+static inline int nla_put_u64(struct nl_msg *msg, int attrtype, uint64_t value)
+{
+ return nla_put(msg, attrtype, sizeof(uint64_t), &value);
+}
+
+/**
+ * Return payload of u64 attribute
+ * @arg nla u64 netlink attribute
+ *
+ * @return Payload as 64 bit integer.
+ */
+static inline uint64_t nla_get_u64(struct nlattr *nla)
+{
+ uint64_t tmp;
+
+ nla_memcpy(&tmp, nla, sizeof(tmp));
+
+ return tmp;
+}
+
+/**
+ * Add string attribute to netlink message.
+ * @arg msg Netlink message.
+ * @arg attrtype Attribute type.
+ * @arg str NUL terminated string.
+ *
+ * @see nla_put
+ * @return 0 on success or a negative error code.
+ */
+static inline int nla_put_string(struct nl_msg *msg, int attrtype, const char *str)
+{
+ return nla_put(msg, attrtype, strlen(str) + 1, str);
+}
+
+/**
+ * Return payload of string attribute.
+ * @arg nla String attribute.
+ *
+ * @return Pointer to attribute payload.
+ */
+static inline char *nla_get_string(struct nlattr *nla)
+{
+ return (char *) nla_data(nla);
+}
+
+static inline char *nla_strdup(struct nlattr *nla)
+{
+ return strdup(nla_get_string(nla));
+}
+
+/** @} */
+
+/**
+ * @name Flag Attribute
+ */
+
+/**
+ * Add flag netlink attribute to netlink message.
+ * @arg msg Netlink message.
+ * @arg attrtype Attribute type.
+ *
+ * @see nla_put
+ * @return 0 on success or a negative error code.
+ */
+static inline int nla_put_flag(struct nl_msg *msg, int attrtype)
+{
+ return nla_put(msg, attrtype, 0, NULL);
+}
+
+/**
+ * Return true if flag attribute is set.
+ * @arg nla Flag netlink attribute.
+ *
+ * @return True if flag is set, otherwise false.
+ */
+static inline int nla_get_flag(struct nlattr *nla)
+{
+ return !!nla;
+}
+
+/** @} */
+
+/**
+ * @name Microseconds Attribute
+ */
+
+/**
+ * Add a msecs netlink attribute to a netlink message
+ * @arg n netlink message
+ * @arg attrtype attribute type
+ * @arg msecs number of msecs
+ */
+static inline int nla_put_msecs(struct nl_msg *n, int attrtype, unsigned long msecs)
+{
+ return nla_put_u64(n, attrtype, msecs);
+}
+
+/**
+ * Return payload of msecs attribute
+ * @arg nla msecs netlink attribute
+ *
+ * @return the number of milliseconds.
+ */
+static inline unsigned long nla_get_msecs(struct nlattr *nla)
+{
+ return nla_get_u64(nla);
+}
+
+/**
+ * Add nested attributes to netlink message.
+ * @arg msg Netlink message.
+ * @arg attrtype Attribute type.
+ * @arg nested Message containing attributes to be nested.
+ *
+ * Takes the attributes found in the \a nested message and appends them
+ * to the message \a msg nested in a container of the type \a attrtype.
+ * The \a nested message may not have a family specific header.
+ *
+ * @see nla_put
+ * @return 0 on success or a negative error code.
+ */
+static inline int nla_put_nested(struct nl_msg *msg, int attrtype, struct nl_msg *nested)
+{
+ return nla_put(msg, attrtype, nlmsg_len(nested->nm_nlh),
+ nlmsg_data(nested->nm_nlh));
+}
+
+/**
+ * Start a new level of nested attributes.
+ * @arg msg Netlink message.
+ * @arg attrtype Attribute type of container.
+ *
+ * @return Pointer to container attribute.
+ */
+static inline struct nlattr *nla_nest_start(struct nl_msg *msg, int attrtype)
+{
+ struct nlattr *start = (struct nlattr *) nlmsg_tail(msg->nm_nlh);
+
+ if (nla_put(msg, attrtype, 0, NULL) < 0)
+ return NULL;
+
+ return start;
+}
+
+/**
+ * Finalize nesting of attributes.
+ * @arg msg Netlink message.
+ * @arg start Container attribute as returned from nla_nest_start().
+ *
+ * Corrects the container attribute header to include the appeneded attributes.
+ *
+ * @return 0
+ */
+static inline int nla_nest_end(struct nl_msg *msg, struct nlattr *start)
+{
+ start->nla_len = (unsigned char *) nlmsg_tail(msg->nm_nlh) -
+ (unsigned char *) start;
+ return 0;
+}
+
+/**
+ * Create attribute index based on nested attribute
+ * @arg tb Index array to be filled (maxtype+1 elements).
+ * @arg maxtype Maximum attribute type expected and accepted.
+ * @arg nla Nested Attribute.
+ * @arg policy Attribute validation policy.
+ *
+ * Feeds the stream of attributes nested into the specified attribute
+ * to nla_parse().
+ *
+ * @see nla_parse
+ * @return 0 on success or a negative error code.
+ */
+static inline int nla_parse_nested(struct nlattr *tb[], int maxtype, struct nlattr *nla,
+ struct nla_policy *policy)
+{
+ return nla_parse(tb, maxtype, nla_data(nla), nla_len(nla), policy);
+}
+
+/**
+ * Compare attribute payload with memory area.
+ * @arg nla Attribute.
+ * @arg data Memory area to compare to.
+ * @arg size Number of bytes to compare.
+ *
+ * @see memcmp(3)
+ * @return An integer less than, equal to, or greater than zero.
+ */
+static inline int nla_memcmp(const struct nlattr *nla, const void *data, size_t size)
+{
+ int d = nla_len(nla) - size;
+
+ if (d == 0)
+ d = memcmp(nla_data(nla), data, size);
+
+ return d;
+}
+
+/**
+ * Compare string attribute payload with string
+ * @arg nla Attribute of type NLA_STRING.
+ * @arg str NUL terminated string.
+ *
+ * @see strcmp(3)
+ * @return An integer less than, equal to, or greater than zero.
+ */
+static inline int nla_strcmp(const struct nlattr *nla, const char *str)
+{
+ int len = strlen(str) + 1;
+ int d = nla_len(nla) - len;
+
+ if (d == 0)
+ d = memcmp(nla_data(nla), str, len);
+
+ return d;
+}
+
+/**
+ * Copy string attribute payload to a buffer.
+ * @arg dst Pointer to destination buffer.
+ * @arg nla Attribute of type NLA_STRING.
+ * @arg dstsize Size of destination buffer in bytes.
+ *
+ * Copies at most dstsize - 1 bytes to the destination buffer.
+ * The result is always a valid NUL terminated string. Unlike
+ * strlcpy the destination buffer is always padded out.
+ *
+ * @return The length of string attribute without the terminating NUL.
+ */
+static inline size_t nla_strlcpy(char *dst, const struct nlattr *nla, size_t dstsize)
+{
+ size_t srclen = nla_len(nla);
+ char *src = nla_data(nla);
+
+ if (srclen > 0 && src[srclen - 1] == '\0')
+ srclen--;
+
+ if (dstsize > 0) {
+ size_t len = (srclen >= dstsize) ? dstsize - 1 : srclen;
+
+ memset(dst, 0, dstsize);
+ memcpy(dst, src, len);
+ }
+
+ return srclen;
+}
+
+
+/**
+ * @name Attribute Construction (Exception Based)
+ * @{
+ */
+
+/**
+ * @ingroup attr
+ * Add unspecific attribute to netlink message.
+ * @arg msg Netlink message.
+ * @arg attrtype Attribute type.
+ * @arg attrlen Length of attribute payload.
+ * @arg data Head of attribute payload.
+ */
+#define NLA_PUT(msg, attrtype, attrlen, data) \
+ do { \
+ if (nla_put(msg, attrtype, attrlen, data) < 0) \
+ goto nla_put_failure; \
+ } while(0)
+
+/**
+ * @ingroup attr
+ * Add atomic type attribute to netlink message.
+ * @arg msg Netlink message.
+ * @arg type Atomic type.
+ * @arg attrtype Attribute type.
+ * @arg value Head of attribute payload.
+ */
+#define NLA_PUT_TYPE(msg, type, attrtype, value) \
+ do { \
+ type __tmp = value; \
+ NLA_PUT(msg, attrtype, sizeof(type), &__tmp); \
+ } while(0)
+
+/**
+ * Add 8 bit integer attribute to netlink message.
+ * @arg msg Netlink message.
+ * @arg attrtype Attribute type.
+ * @arg value Numeric value.
+ */
+#define NLA_PUT_U8(msg, attrtype, value) \
+ NLA_PUT_TYPE(msg, uint8_t, attrtype, value)
+
+/**
+ * Add 16 bit integer attribute to netlink message.
+ * @arg msg Netlink message.
+ * @arg attrtype Attribute type.
+ * @arg value Numeric value.
+ */
+#define NLA_PUT_U16(msg, attrtype, value) \
+ NLA_PUT_TYPE(msg, uint16_t, attrtype, value)
+
+/**
+ * Add 32 bit integer attribute to netlink message.
+ * @arg msg Netlink message.
+ * @arg attrtype Attribute type.
+ * @arg value Numeric value.
+ */
+#define NLA_PUT_U32(msg, attrtype, value) \
+ NLA_PUT_TYPE(msg, uint32_t, attrtype, value)
+
+/**
+ * Add 64 bit integer attribute to netlink message.
+ * @arg msg Netlink message.
+ * @arg attrtype Attribute type.
+ * @arg value Numeric value.
+ */
+#define NLA_PUT_U64(msg, attrtype, value) \
+ NLA_PUT_TYPE(msg, uint64_t, attrtype, value)
+
+/**
+ * Add string attribute to netlink message.
+ * @arg msg Netlink message.
+ * @arg attrtype Attribute type.
+ * @arg value NUL terminated character string.
+ */
+#define NLA_PUT_STRING(msg, attrtype, value) \
+ NLA_PUT(msg, attrtype, strlen(value) + 1, value)
+
+/**
+ * Add flag attribute to netlink message.
+ * @arg msg Netlink message.
+ * @arg attrtype Attribute type.
+ */
+#define NLA_PUT_FLAG(msg, attrtype) \
+ NLA_PUT(msg, attrtype, 0, NULL)
+
+/**
+ * Add msecs attribute to netlink message.
+ * @arg msg Netlink message.
+ * @arg attrtype Attribute type.
+ * @arg msecs Numeric value in micro seconds.
+ */
+#define NLA_PUT_MSECS(msg, attrtype, msecs) \
+ NLA_PUT_U64(msg, attrtype, msecs)
+
+/**
+ * Add address attribute to netlink message.
+ * @arg msg Netlink message.
+ * @arg attrtype Attribute type.
+ * @arg addr Abstract address object.
+ */
+#define NLA_PUT_ADDR(msg, attrtype, addr) \
+ NLA_PUT(msg, attrtype, nl_addr_get_len(addr), \
+ nl_addr_get_binary_addr(addr))
+
+/** @} */
+
+/**
+ * @name Iterators
+ * @{
+ */
+
+/**
+ * @ingroup attr
+ * Iterate over a stream of attributes
+ * @arg pos loop counter, set to current attribute
+ * @arg head head of attribute stream
+ * @arg len length of attribute stream
+ * @arg rem initialized to len, holds bytes currently remaining in stream
+ */
+#define nla_for_each_attr(pos, head, len, rem) \
+ for (pos = head, rem = len; \
+ nla_ok(pos, rem); \
+ pos = nla_next(pos, &(rem)))
+
+/**
+ * @ingroup attr
+ * Iterate over a stream of nested attributes
+ * @arg pos loop counter, set to current attribute
+ * @arg nla attribute containing the nested attributes
+ * @arg rem initialized to len, holds bytes currently remaining in stream
+ */
+#define nla_for_each_nested(pos, nla, rem) \
+ for (pos = nla_data(nla), rem = nla_len(nla); \
+ nla_ok(pos, rem); \
+ pos = nla_next(pos, &(rem)))
+
+/** @} */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
--- /dev/null
+/*
+ * netlink/cache-api.h Caching API
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation version 2.1
+ * of the License.
+ *
+ * Copyright (c) 2003-2006 Thomas Graf <tgraf@suug.ch>
+ */
+
+#ifndef NETLINK_CACHE_API_H_
+#define NETLINK_CACHE_API_H_
+
+#include <netlink/netlink.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @ingroup cache
+ * @defgroup cache_api Cache Implementation
+ * @brief
+ *
+ * @par 1) Cache Definition
+ * @code
+ * struct nl_cache_ops my_cache_ops = {
+ * .co_name = "route/link",
+ * .co_protocol = NETLINK_ROUTE,
+ * .co_hdrsize = sizeof(struct ifinfomsg),
+ * .co_obj_ops = &my_obj_ops,
+ * };
+ * @endcode
+ *
+ * @par 2)
+ * @code
+ * // The simplest way to fill a cache is by providing a request-update
+ * // function which must trigger a complete dump on the kernel-side of
+ * // whatever the cache covers.
+ * static int my_request_update(struct nl_cache *cache,
+ * struct nl_sock *socket)
+ * {
+ * // In this example, we request a full dump of the interface table
+ * return nl_rtgen_request(socket, RTM_GETLINK, AF_UNSPEC, NLM_F_DUMP);
+ * }
+ *
+ * // The resulting netlink messages sent back will be fed into a message
+ * // parser one at a time. The message parser has to extract all relevant
+ * // information from the message and create an object reflecting the
+ * // contents of the message and pass it on to the parser callback function
+ * // provide which will add the object to the cache.
+ * static int my_msg_parser(struct nl_cache_ops *ops, struct sockaddr_nl *who,
+ * struct nlmsghdr *nlh, struct nl_parser_param *pp)
+ * {
+ * struct my_obj *obj;
+ *
+ * obj = my_obj_alloc();
+ * obj->ce_msgtype = nlh->nlmsg_type;
+ *
+ * // Parse the netlink message and continue creating the object.
+ *
+ * err = pp->pp_cb((struct nl_object *) obj, pp);
+ * if (err < 0)
+ * goto errout;
+ * }
+ *
+ * struct nl_cache_ops my_cache_ops = {
+ * ...
+ * .co_request_update = my_request_update,
+ * .co_msg_parser = my_msg_parser,
+ * };
+ * @endcode
+ *
+ * @par 3) Notification based Updates
+ * @code
+ * // Caches can be kept up-to-date based on notifications if the kernel
+ * // sends out notifications whenever an object is added/removed/changed.
+ * //
+ * // It is trivial to support this, first a list of groups needs to be
+ * // defined which are required to join in order to receive all necessary
+ * // notifications. The groups are separated by address family to support
+ * // the common situation where a separate group is used for each address
+ * // family. If there is only one group, simply specify AF_UNSPEC.
+ * static struct nl_af_group addr_groups[] = {
+ * { AF_INET, RTNLGRP_IPV4_IFADDR },
+ * { AF_INET6, RTNLGRP_IPV6_IFADDR },
+ * { END_OF_GROUP_LIST },
+ * };
+ *
+ * // In order for the caching system to know the meaning of each message
+ * // type it requires a table which maps each supported message type to
+ * // a cache action, e.g. RTM_NEWADDR means address has been added or
+ * // updated, RTM_DELADDR means address has been removed.
+ * static struct nl_cache_ops rtnl_addr_ops = {
+ * ...
+ * .co_msgtypes = {
+ * { RTM_NEWADDR, NL_ACT_NEW, "new" },
+ * { RTM_DELADDR, NL_ACT_DEL, "del" },
+ * { RTM_GETADDR, NL_ACT_GET, "get" },
+ * END_OF_MSGTYPES_LIST,
+ * },
+ * .co_groups = addr_groups,
+ * };
+ *
+ * // It is now possible to keep the cache up-to-date using the cache manager.
+ * @endcode
+ * @{
+ */
+
+enum {
+ NL_ACT_UNSPEC,
+ NL_ACT_NEW,
+ NL_ACT_DEL,
+ NL_ACT_GET,
+ NL_ACT_SET,
+ NL_ACT_CHANGE,
+ __NL_ACT_MAX,
+};
+
+#define NL_ACT_MAX (__NL_ACT_MAX - 1)
+
+#define END_OF_MSGTYPES_LIST { -1, -1, NULL }
+
+/**
+ * Message type to cache action association
+ */
+struct nl_msgtype
+{
+ /** Netlink message type */
+ int mt_id;
+
+ /** Cache action to take */
+ int mt_act;
+
+ /** Name of operation for human-readable printing */
+ char * mt_name;
+};
+
+/**
+ * Address family to netlink group association
+ */
+struct nl_af_group
+{
+ /** Address family */
+ int ag_family;
+
+ /** Netlink group identifier */
+ int ag_group;
+};
+
+#define END_OF_GROUP_LIST AF_UNSPEC, 0
+
+struct nl_parser_param
+{
+ int (*pp_cb)(struct nl_object *, struct nl_parser_param *);
+ void * pp_arg;
+};
+
+/**
+ * Cache Operations
+ */
+struct nl_cache_ops
+{
+ char * co_name;
+
+ int co_hdrsize;
+ int co_protocol;
+ struct nl_af_group * co_groups;
+
+ /**
+ * Called whenever an update of the cache is required. Must send
+ * a request message to the kernel requesting a complete dump.
+ */
+ int (*co_request_update)(struct nl_cache *, struct nl_sock *);
+
+ /**
+ * Called whenever a message was received that needs to be parsed.
+ * Must parse the message and call the paser callback function
+ * (nl_parser_param) provided via the argument.
+ */
+ int (*co_msg_parser)(struct nl_cache_ops *, struct sockaddr_nl *,
+ struct nlmsghdr *, struct nl_parser_param *);
+
+ struct nl_object_ops * co_obj_ops;
+
+ struct nl_cache_ops *co_next;
+ struct nl_cache *co_major_cache;
+ struct genl_ops * co_genl;
+ struct nl_msgtype co_msgtypes[];
+};
+
+/** @} */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
--- /dev/null
+/*
+ * netlink/cache.h Caching Module
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation version 2.1
+ * of the License.
+ *
+ * Copyright (c) 2003-2008 Thomas Graf <tgraf@suug.ch>
+ */
+
+#ifndef NETLINK_CACHE_H_
+#define NETLINK_CACHE_H_
+
+#include <netlink/netlink.h>
+#include <netlink/msg.h>
+#include <netlink/utils.h>
+#include <netlink/object.h>
+#include <netlink/cache-api.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct nl_cache;
+
+typedef void (*change_func_t)(struct nl_cache *, struct nl_object *, int);
+
+/* Access Functions */
+extern int nl_cache_nitems(struct nl_cache *);
+extern int nl_cache_nitems_filter(struct nl_cache *,
+ struct nl_object *);
+extern struct nl_cache_ops * nl_cache_get_ops(struct nl_cache *);
+extern struct nl_object * nl_cache_get_first(struct nl_cache *);
+extern struct nl_object * nl_cache_get_last(struct nl_cache *);
+extern struct nl_object * nl_cache_get_next(struct nl_object *);
+extern struct nl_object * nl_cache_get_prev(struct nl_object *);
+
+extern struct nl_cache * nl_cache_alloc(struct nl_cache_ops *);
+extern int nl_cache_alloc_and_fill(struct nl_cache_ops *,
+ struct nl_sock *,
+ struct nl_cache **);
+extern int nl_cache_alloc_name(const char *,
+ struct nl_cache **);
+extern struct nl_cache * nl_cache_subset(struct nl_cache *,
+ struct nl_object *);
+extern void nl_cache_clear(struct nl_cache *);
+extern void nl_cache_free(struct nl_cache *);
+
+/* Cache modification */
+extern int nl_cache_add(struct nl_cache *,
+ struct nl_object *);
+extern int nl_cache_parse_and_add(struct nl_cache *,
+ struct nl_msg *);
+extern void nl_cache_remove(struct nl_object *);
+extern int nl_cache_refill(struct nl_sock *,
+ struct nl_cache *);
+extern int nl_cache_pickup(struct nl_sock *,
+ struct nl_cache *);
+extern int nl_cache_resync(struct nl_sock *,
+ struct nl_cache *,
+ change_func_t);
+extern int nl_cache_include(struct nl_cache *,
+ struct nl_object *,
+ change_func_t);
+
+/* General */
+extern int nl_cache_is_empty(struct nl_cache *);
+extern void nl_cache_mark_all(struct nl_cache *);
+
+/* Dumping */
+extern void nl_cache_dump(struct nl_cache *,
+ struct nl_dump_params *);
+extern void nl_cache_dump_filter(struct nl_cache *,
+ struct nl_dump_params *,
+ struct nl_object *);
+
+/* Iterators */
+extern void nl_cache_foreach(struct nl_cache *,
+ void (*cb)(struct nl_object *,
+ void *),
+ void *arg);
+extern void nl_cache_foreach_filter(struct nl_cache *,
+ struct nl_object *,
+ void (*cb)(struct
+ nl_object *,
+ void *),
+ void *arg);
+
+/* --- cache management --- */
+
+/* Cache type management */
+extern struct nl_cache_ops * nl_cache_ops_lookup(const char *);
+extern struct nl_cache_ops * nl_cache_ops_associate(int, int);
+extern struct nl_msgtype * nl_msgtype_lookup(struct nl_cache_ops *, int);
+extern void nl_cache_ops_foreach(void (*cb)(struct nl_cache_ops *, void *), void *);
+extern int nl_cache_mngt_register(struct nl_cache_ops *);
+extern int nl_cache_mngt_unregister(struct nl_cache_ops *);
+
+/* Global cache provisioning/requiring */
+extern void nl_cache_mngt_provide(struct nl_cache *);
+extern void nl_cache_mngt_unprovide(struct nl_cache *);
+extern struct nl_cache * nl_cache_mngt_require(const char *);
+
+struct nl_cache_mngr;
+
+#define NL_AUTO_PROVIDE 1
+
+extern int nl_cache_mngr_alloc(struct nl_sock *,
+ int, int,
+ struct nl_cache_mngr **);
+extern int nl_cache_mngr_add(struct nl_cache_mngr *,
+ const char *,
+ change_func_t,
+ struct nl_cache **);
+extern int nl_cache_mngr_get_fd(struct nl_cache_mngr *);
+extern int nl_cache_mngr_poll(struct nl_cache_mngr *,
+ int);
+extern int nl_cache_mngr_data_ready(struct nl_cache_mngr *);
+extern void nl_cache_mngr_free(struct nl_cache_mngr *);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
--- /dev/null
+/*
+ * netlink/data.h Abstract Data
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation version 2.1
+ * of the License.
+ *
+ * Copyright (c) 2003-2008 Thomas Graf <tgraf@suug.ch>
+ */
+
+#ifndef NETLINK_DATA_H_
+#define NETLINK_DATA_H_
+
+#include <netlink/netlink.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct nl_data;
+
+/* General */
+extern struct nl_data * nl_data_alloc(void *, size_t);
+extern struct nl_data * nl_data_alloc_attr(struct nlattr *);
+extern struct nl_data * nl_data_clone(struct nl_data *);
+extern int nl_data_append(struct nl_data *, void *, size_t);
+extern void nl_data_free(struct nl_data *);
+
+/* Access Functions */
+extern void * nl_data_get(struct nl_data *);
+extern size_t nl_data_get_size(struct nl_data *);
+
+/* Misc */
+extern int nl_data_cmp(struct nl_data *, struct nl_data *);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
--- /dev/null
+/*
+ * netlink/errno.h Error Numbers
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation version 2.1
+ * of the License.
+ *
+ * Copyright (c) 2008 Thomas Graf <tgraf@suug.ch>
+ */
+
+#ifndef NETLINK_ERRNO_H_
+#define NETLINK_ERRNO_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define NLE_SUCCESS 0
+#define NLE_FAILURE 1
+#define NLE_INTR 2
+#define NLE_BAD_SOCK 3
+#define NLE_AGAIN 4
+#define NLE_NOMEM 5
+#define NLE_EXIST 6
+#define NLE_INVAL 7
+#define NLE_RANGE 8
+#define NLE_MSGSIZE 9
+#define NLE_OPNOTSUPP 10
+#define NLE_AF_NOSUPPORT 11
+#define NLE_OBJ_NOTFOUND 12
+#define NLE_NOATTR 13
+#define NLE_MISSING_ATTR 14
+#define NLE_AF_MISMATCH 15
+#define NLE_SEQ_MISMATCH 16
+#define NLE_MSG_OVERFLOW 17
+#define NLE_MSG_TRUNC 18
+#define NLE_NOADDR 19
+#define NLE_SRCRT_NOSUPPORT 20
+#define NLE_MSG_TOOSHORT 21
+#define NLE_MSGTYPE_NOSUPPORT 22
+#define NLE_OBJ_MISMATCH 23
+#define NLE_NOCACHE 24
+#define NLE_BUSY 25
+#define NLE_PROTO_MISMATCH 26
+#define NLE_NOACCESS 27
+#define NLE_PERM 28
+
+#define NLE_MAX NLE_PERM
+
+extern const char * nl_geterror(int);
+extern void nl_perror(int, const char *);
+extern int nl_syserr2nlerr(int);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
--- /dev/null
+/*
+ * netlink/genl/ctrl.h Generic Netlink Controller
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation version 2.1
+ * of the License.
+ *
+ * Copyright (c) 2003-2008 Thomas Graf <tgraf@suug.ch>
+ */
+
+#ifndef NETLINK_GENL_CTRL_H_
+#define NETLINK_GENL_CTRL_H_
+
+#include <netlink/netlink.h>
+#include <netlink/cache.h>
+#include <netlink/addr.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct genl_family;
+
+extern int genl_ctrl_alloc_cache(struct nl_sock *,
+ struct nl_cache **);
+extern struct genl_family * genl_ctrl_search(struct nl_cache *, int);
+extern struct genl_family * genl_ctrl_search_by_name(struct nl_cache *,
+ const char *);
+extern int genl_ctrl_resolve(struct nl_sock *,
+ const char *);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
--- /dev/null
+/*
+ * netlink/genl/family.h Generic Netlink Family
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation version 2.1
+ * of the License.
+ *
+ * Copyright (c) 2003-2006 Thomas Graf <tgraf@suug.ch>
+ */
+
+#ifndef NETLINK_GENL_FAMILY_H_
+#define NETLINK_GENL_FAMILY_H_
+
+#include <netlink/netlink.h>
+#include <netlink/cache.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** @cond SKIP */
+#define FAMILY_ATTR_ID 0x01
+#define FAMILY_ATTR_NAME 0x02
+#define FAMILY_ATTR_VERSION 0x04
+#define FAMILY_ATTR_HDRSIZE 0x08
+#define FAMILY_ATTR_MAXATTR 0x10
+#define FAMILY_ATTR_OPS 0x20
+
+
+struct genl_family
+{
+ NLHDR_COMMON
+
+ uint16_t gf_id;
+ char gf_name[GENL_NAMSIZ];
+ uint32_t gf_version;
+ uint32_t gf_hdrsize;
+ uint32_t gf_maxattr;
+
+ struct nl_list_head gf_ops;
+};
+
+
+extern struct genl_family * genl_family_alloc(void);
+extern void genl_family_put(struct genl_family *);
+
+extern int genl_family_add_op(struct genl_family *,
+ int, int);
+
+/**
+ * @name Attributes
+ * @{
+ */
+
+static inline unsigned int genl_family_get_id(struct genl_family *family)
+{
+ if (family->ce_mask & FAMILY_ATTR_ID)
+ return family->gf_id;
+ else
+ return GENL_ID_GENERATE;
+}
+
+static inline void genl_family_set_id(struct genl_family *family, unsigned int id)
+{
+ family->gf_id = id;
+ family->ce_mask |= FAMILY_ATTR_ID;
+}
+
+static inline char *genl_family_get_name(struct genl_family *family)
+{
+ if (family->ce_mask & FAMILY_ATTR_NAME)
+ return family->gf_name;
+ else
+ return NULL;
+}
+
+static inline void genl_family_set_name(struct genl_family *family, const char *name)
+{
+ strncpy(family->gf_name, name, GENL_NAMSIZ-1);
+ family->ce_mask |= FAMILY_ATTR_NAME;
+}
+
+static inline uint8_t genl_family_get_version(struct genl_family *family)
+{
+ if (family->ce_mask & FAMILY_ATTR_VERSION)
+ return family->gf_version;
+ else
+ return 0;
+}
+
+static inline void genl_family_set_version(struct genl_family *family, uint8_t version)
+{
+ family->gf_version = version;
+ family->ce_mask |= FAMILY_ATTR_VERSION;
+}
+
+static inline uint32_t genl_family_get_hdrsize(struct genl_family *family)
+{
+ if (family->ce_mask & FAMILY_ATTR_HDRSIZE)
+ return family->gf_hdrsize;
+ else
+ return 0;
+}
+
+static inline void genl_family_set_hdrsize(struct genl_family *family, uint32_t hdrsize)
+{
+ family->gf_hdrsize = hdrsize;
+ family->ce_mask |= FAMILY_ATTR_HDRSIZE;
+}
+
+static inline uint32_t genl_family_get_maxattr(struct genl_family *family)
+{
+ if (family->ce_mask & FAMILY_ATTR_MAXATTR)
+ return family->gf_maxattr;
+ else
+ return family->gf_maxattr;
+}
+
+static inline void genl_family_set_maxattr(struct genl_family *family, uint32_t maxattr)
+{
+ family->gf_maxattr = maxattr;
+ family->ce_mask |= FAMILY_ATTR_MAXATTR;
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
--- /dev/null
+/*
+ * netlink/genl/genl.h Generic Netlink
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation version 2.1
+ * of the License.
+ *
+ * Copyright (c) 2003-2008 Thomas Graf <tgraf@suug.ch>
+ */
+
+#ifndef NETLINK_GENL_H_
+#define NETLINK_GENL_H_
+
+#include <netlink/netlink.h>
+#include <netlink/msg.h>
+#include <netlink/attr.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+extern int genl_connect(struct nl_sock *);
+
+extern int genl_send_simple(struct nl_sock *, int, int,
+ int, int);
+
+extern void * genlmsg_put(struct nl_msg *, uint32_t, uint32_t,
+ int, int, int, uint8_t, uint8_t);
+
+extern int genlmsg_valid_hdr(struct nlmsghdr *, int);
+extern int genlmsg_validate(struct nlmsghdr *, int, int,
+ struct nla_policy *);
+extern int genlmsg_parse(struct nlmsghdr *, int, struct nlattr **,
+ int, struct nla_policy *);
+extern void * genlmsg_data(const struct genlmsghdr *);
+extern int genlmsg_len(const struct genlmsghdr *);
+extern struct nlattr * genlmsg_attrdata(const struct genlmsghdr *, int);
+extern int genlmsg_attrlen(const struct genlmsghdr *, int);
+
+extern char * genl_op2name(int, int, char *, size_t);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
--- /dev/null
+/*
+ * netlink/genl/mngt.h Generic Netlink Management
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation version 2.1
+ * of the License.
+ *
+ * Copyright (c) 2003-2006 Thomas Graf <tgraf@suug.ch>
+ */
+
+#ifndef NETLINK_GENL_MNGT_H_
+#define NETLINK_GENL_MNGT_H_
+
+#include <netlink/netlink.h>
+#include <netlink/attr.h>
+#include <netlink/list.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct nl_cache_ops;
+
+struct genl_info
+{
+ struct sockaddr_nl * who;
+ struct nlmsghdr * nlh;
+ struct genlmsghdr * genlhdr;
+ void * userhdr;
+ struct nlattr ** attrs;
+};
+
+/**
+ * @ingroup genl_mngt
+ * Generic Netlink Command
+ */
+struct genl_cmd
+{
+ /** Unique command identifier */
+ int c_id;
+
+ /** Name/description of command */
+ char * c_name;
+
+ /**
+ * Maximum attribute identifier, must be provided if
+ * a message parser is available.
+ */
+ int c_maxattr;
+
+ int (*c_msg_parser)(struct nl_cache_ops *,
+ struct genl_cmd *,
+ struct genl_info *, void *);
+
+ /**
+ * Attribute validation policy (optional)
+ */
+ struct nla_policy * c_attr_policy;
+};
+
+/**
+ * @ingroup genl_mngt
+ * Generic Netlink Operations
+ */
+struct genl_ops
+{
+ int o_family;
+ int o_id;
+ char * o_name;
+ struct nl_cache_ops * o_cache_ops;
+ struct genl_cmd * o_cmds;
+ int o_ncmds;
+
+ /* linked list of all genl cache operations */
+ struct nl_list_head o_list;
+};
+
+
+extern int genl_register(struct nl_cache_ops *);
+extern void genl_unregister(struct nl_cache_ops *);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
--- /dev/null
+/*
+ * netlink/handlers.c default netlink message handlers
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation version 2.1
+ * of the License.
+ *
+ * Copyright (c) 2003-2006 Thomas Graf <tgraf@suug.ch>
+ */
+
+#ifndef NETLINK_HANDLERS_H_
+#define NETLINK_HANDLERS_H_
+
+#include <stdio.h>
+#include <stdint.h>
+#include <sys/types.h>
+#include <netlink/netlink-compat.h>
+#include <netlink/netlink-kernel.h>
+#include <netlink/types.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct nl_sock;
+struct nl_msg;
+struct nl_cb;
+/**
+ * @name Callback Typedefs
+ * @{
+ */
+
+/**
+ * nl_recvmsgs() callback for message processing customization
+ * @ingroup cb
+ * @arg msg netlink message being processed
+ * @arg arg argument passwd on through caller
+ */
+typedef int (*nl_recvmsg_msg_cb_t)(struct nl_msg *msg, void *arg);
+
+/**
+ * nl_recvmsgs() callback for error message processing customization
+ * @ingroup cb
+ * @arg nla netlink address of the peer
+ * @arg nlerr netlink error message being processed
+ * @arg arg argument passed on through caller
+ */
+typedef int (*nl_recvmsg_err_cb_t)(struct sockaddr_nl *nla,
+ struct nlmsgerr *nlerr, void *arg);
+
+/** @} */
+
+/**
+ * Callback actions
+ * @ingroup cb
+ */
+enum nl_cb_action {
+ /** Proceed with wathever would come next */
+ NL_OK,
+ /** Skip this message */
+ NL_SKIP,
+ /** Stop parsing altogether and discard remaining messages */
+ NL_STOP,
+};
+
+/**
+ * Callback kinds
+ * @ingroup cb
+ */
+enum nl_cb_kind {
+ /** Default handlers (quiet) */
+ NL_CB_DEFAULT,
+ /** Verbose default handlers (error messages printed) */
+ NL_CB_VERBOSE,
+ /** Debug handlers for debugging */
+ NL_CB_DEBUG,
+ /** Customized handler specified by the user */
+ NL_CB_CUSTOM,
+ __NL_CB_KIND_MAX,
+};
+
+#define NL_CB_KIND_MAX (__NL_CB_KIND_MAX - 1)
+
+/**
+ * Callback types
+ * @ingroup cb
+ */
+enum nl_cb_type {
+ /** Message is valid */
+ NL_CB_VALID,
+ /** Last message in a series of multi part messages received */
+ NL_CB_FINISH,
+ /** Report received that data was lost */
+ NL_CB_OVERRUN,
+ /** Message wants to be skipped */
+ NL_CB_SKIPPED,
+ /** Message is an acknowledge */
+ NL_CB_ACK,
+ /** Called for every message received */
+ NL_CB_MSG_IN,
+ /** Called for every message sent out except for nl_sendto() */
+ NL_CB_MSG_OUT,
+ /** Message is malformed and invalid */
+ NL_CB_INVALID,
+ /** Called instead of internal sequence number checking */
+ NL_CB_SEQ_CHECK,
+ /** Sending of an acknowledge message has been requested */
+ NL_CB_SEND_ACK,
+ __NL_CB_TYPE_MAX,
+};
+
+#define NL_CB_TYPE_MAX (__NL_CB_TYPE_MAX - 1)
+
+struct nl_cb
+{
+ nl_recvmsg_msg_cb_t cb_set[NL_CB_TYPE_MAX+1];
+ void * cb_args[NL_CB_TYPE_MAX+1];
+
+ nl_recvmsg_err_cb_t cb_err;
+ void * cb_err_arg;
+
+ /** May be used to replace nl_recvmsgs with your own implementation
+ * in all internal calls to nl_recvmsgs. */
+ int (*cb_recvmsgs_ow)(struct nl_sock *,
+ struct nl_cb *);
+
+ /** Overwrite internal calls to nl_recv, must return the number of
+ * octets read and allocate a buffer for the received data. */
+ int (*cb_recv_ow)(struct nl_sock *,
+ struct sockaddr_nl *,
+ unsigned char **,
+ struct ucred **);
+
+ /** Overwrites internal calls to nl_send, must send the netlink
+ * message. */
+ int (*cb_send_ow)(struct nl_sock *,
+ struct nl_msg *);
+
+ int cb_refcnt;
+};
+
+
+extern struct nl_cb * nl_cb_alloc(enum nl_cb_kind);
+extern struct nl_cb * nl_cb_clone(struct nl_cb *);
+extern void nl_cb_put(struct nl_cb *);
+
+extern int nl_cb_set(struct nl_cb *, enum nl_cb_type, enum nl_cb_kind,
+ nl_recvmsg_msg_cb_t, void *);
+extern int nl_cb_err(struct nl_cb *, enum nl_cb_kind, nl_recvmsg_err_cb_t,
+ void *);
+
+static inline struct nl_cb *nl_cb_get(struct nl_cb *cb)
+{
+ cb->cb_refcnt++;
+
+ return cb;
+}
+
+/**
+ * Set up a all callbacks
+ * @arg cb callback set
+ * @arg kind kind of callback
+ * @arg func callback function
+ * @arg arg argument to be passwd to callback function
+ *
+ * @return 0 on success or a negative error code
+ */
+static inline int nl_cb_set_all(struct nl_cb *cb, enum nl_cb_kind kind,
+ nl_recvmsg_msg_cb_t func, void *arg)
+{
+ int i, err;
+
+ for (i = 0; i <= NL_CB_TYPE_MAX; i++) {
+ err = nl_cb_set(cb, i, kind, func, arg);
+ if (err < 0)
+ return err;
+ }
+
+ return 0;
+}
+
+
+/**
+ * @name Overwriting
+ * @{
+ */
+
+/**
+ * Overwrite internal calls to nl_recvmsgs()
+ * @arg cb callback set
+ * @arg func replacement callback for nl_recvmsgs()
+ */
+static inline void nl_cb_overwrite_recvmsgs(struct nl_cb *cb,
+ int (*func)(struct nl_sock *, struct nl_cb *))
+{
+ cb->cb_recvmsgs_ow = func;
+}
+
+/**
+ * Overwrite internal calls to nl_recv()
+ * @arg cb callback set
+ * @arg func replacement callback for nl_recv()
+ */
+static inline void nl_cb_overwrite_recv(struct nl_cb *cb,
+ int (*func)(struct nl_sock *, struct sockaddr_nl *,
+ unsigned char **, struct ucred **))
+{
+ cb->cb_recv_ow = func;
+}
+
+/**
+ * Overwrite internal calls to nl_send()
+ * @arg cb callback set
+ * @arg func replacement callback for nl_send()
+ */
+static inline void nl_cb_overwrite_send(struct nl_cb *cb,
+ int (*func)(struct nl_sock *, struct nl_msg *))
+{
+ cb->cb_send_ow = func;
+}
+
+/** @} */
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
--- /dev/null
+/*
+ * netlink/list.h Netlink List Utilities
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation version 2.1
+ * of the License.
+ *
+ * Copyright (c) 2003-2006 Thomas Graf <tgraf@suug.ch>
+ */
+
+#ifndef NETLINK_LIST_H_
+#define NETLINK_LIST_H_
+
+struct nl_list_head
+{
+ struct nl_list_head * next;
+ struct nl_list_head * prev;
+};
+
+
+static inline void __nl_list_add(struct nl_list_head *obj,
+ struct nl_list_head *prev,
+ struct nl_list_head *next)
+{
+ prev->next = obj;
+ obj->prev = prev;
+ next->prev = obj;
+ obj->next = next;
+}
+
+static inline void nl_list_add_tail(struct nl_list_head *obj,
+ struct nl_list_head *head)
+{
+ __nl_list_add(obj, head->prev, head);
+}
+
+static inline void nl_list_add_head(struct nl_list_head *obj,
+ struct nl_list_head *head)
+{
+ __nl_list_add(obj, head, head->next);
+}
+
+static inline void nl_list_del(struct nl_list_head *obj)
+{
+ obj->next->prev = obj->prev;
+ obj->prev->next = obj->next;
+}
+
+static inline int nl_list_empty(struct nl_list_head *head)
+{
+ return head->next == head;
+}
+
+#define nl_container_of(ptr, type, member) ({ \
+ const typeof( ((type *)0)->member ) *__mptr = (ptr); \
+ (type *)( (char *)__mptr - ((size_t) &((type *)0)->member));})
+
+#define nl_list_entry(ptr, type, member) \
+ nl_container_of(ptr, type, member)
+
+#define nl_list_at_tail(pos, head, member) \
+ ((pos)->member.next == (head))
+
+#define nl_list_at_head(pos, head, member) \
+ ((pos)->member.prev == (head))
+
+#define NL_LIST_HEAD(name) \
+ struct nl_list_head name = { &(name), &(name) }
+
+#define nl_list_first_entry(head, type, member) \
+ nl_list_entry((head)->next, type, member)
+
+#define nl_list_for_each_entry(pos, head, member) \
+ for (pos = nl_list_entry((head)->next, typeof(*pos), member); \
+ &(pos)->member != (head); \
+ (pos) = nl_list_entry((pos)->member.next, typeof(*(pos)), member))
+
+#define nl_list_for_each_entry_safe(pos, n, head, member) \
+ for (pos = nl_list_entry((head)->next, typeof(*pos), member), \
+ n = nl_list_entry(pos->member.next, typeof(*pos), member); \
+ &(pos)->member != (head); \
+ pos = n, n = nl_list_entry(n->member.next, typeof(*n), member))
+
+#define nl_init_list_head(head) \
+ do { (head)->next = (head); (head)->prev = (head); } while (0)
+
+#endif
--- /dev/null
+/*
+ * netlink/msg.c Netlink Messages Interface
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation version 2.1
+ * of the License.
+ *
+ * Copyright (c) 2003-2006 Thomas Graf <tgraf@suug.ch>
+ */
+
+#ifndef NETLINK_MSG_H_
+#define NETLINK_MSG_H_
+
+#include <netlink/netlink.h>
+#include <netlink/object.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct nla_policy;
+
+#define NL_DONTPAD 0
+
+/**
+ * @ingroup msg
+ * @brief
+ * Will cause the netlink pid to be set to the pid assigned to
+ * the netlink handle (socket) just before sending the message off.
+ * @note Requires the use of nl_send_auto_complete()!
+ */
+#define NL_AUTO_PID 0
+
+/**
+ * @ingroup msg
+ * @brief
+ * May be used to refer to a sequence number which should be
+ * automatically set just before sending the message off.
+ * @note Requires the use of nl_send_auto_complete()!
+ */
+#define NL_AUTO_SEQ 0
+
+#define NL_MSG_CRED_PRESENT 1
+
+struct nl_msg
+{
+ int nm_protocol;
+ int nm_flags;
+ struct sockaddr_nl nm_src;
+ struct sockaddr_nl nm_dst;
+ struct ucred nm_creds;
+ struct nlmsghdr * nm_nlh;
+ size_t nm_size;
+ int nm_refcnt;
+};
+
+
+struct nl_msg;
+struct nl_tree;
+struct ucred;
+
+/* message parsing */
+extern int nlmsg_ok(const struct nlmsghdr *, int);
+extern struct nlmsghdr * nlmsg_next(struct nlmsghdr *, int *);
+extern int nlmsg_parse(struct nlmsghdr *, int, struct nlattr **,
+ int, struct nla_policy *);
+extern int nlmsg_validate(struct nlmsghdr *, int, int,
+ struct nla_policy *);
+
+extern struct nl_msg * nlmsg_alloc(void);
+extern struct nl_msg * nlmsg_alloc_size(size_t);
+extern struct nl_msg * nlmsg_alloc_simple(int, int);
+extern void nlmsg_set_default_size(size_t);
+extern struct nl_msg * nlmsg_inherit(struct nlmsghdr *);
+extern struct nl_msg * nlmsg_convert(struct nlmsghdr *);
+extern void * nlmsg_reserve(struct nl_msg *, size_t, int);
+extern int nlmsg_append(struct nl_msg *, void *, size_t, int);
+
+extern struct nlmsghdr * nlmsg_put(struct nl_msg *, uint32_t, uint32_t,
+ int, int, int);
+extern void nlmsg_free(struct nl_msg *);
+
+extern int nl_msg_parse(struct nl_msg *,
+ void (*cb)(struct nl_object *, void *),
+ void *);
+
+extern void nl_msg_dump(struct nl_msg *, FILE *);
+
+/**
+ * length of netlink message not including padding
+ * @arg payload length of message payload
+ */
+static inline int nlmsg_msg_size(int payload)
+{
+ return NLMSG_HDRLEN + payload;
+}
+
+/**
+ * length of netlink message including padding
+ * @arg payload length of message payload
+ */
+static inline int nlmsg_total_size(int payload)
+{
+ return NLMSG_ALIGN(nlmsg_msg_size(payload));
+}
+
+/**
+ * length of padding at the message's tail
+ * @arg payload length of message payload
+ */
+static inline int nlmsg_padlen(int payload)
+{
+ return nlmsg_total_size(payload) - nlmsg_msg_size(payload);
+}
+
+/**
+ * head of message payload
+ * @arg nlh netlink messsage header
+ */
+static inline void *nlmsg_data(const struct nlmsghdr *nlh)
+{
+ return (unsigned char *) nlh + NLMSG_HDRLEN;
+}
+
+static inline void *nlmsg_tail(const struct nlmsghdr *nlh)
+{
+ return (unsigned char *) nlh + NLMSG_ALIGN(nlh->nlmsg_len);
+}
+
+/**
+ * length of message payload
+ * @arg nlh netlink message header
+ */
+static inline int nlmsg_len(const struct nlmsghdr *nlh)
+{
+ return nlh->nlmsg_len - NLMSG_HDRLEN;
+}
+
+/**
+ * head of attributes data
+ * @arg nlh netlink message header
+ * @arg hdrlen length of family specific header
+ */
+static inline struct nlattr *nlmsg_attrdata(const struct nlmsghdr *nlh, int hdrlen)
+{
+ unsigned char *data = nlmsg_data(nlh);
+ return (struct nlattr *) (data + NLMSG_ALIGN(hdrlen));
+}
+
+/**
+ * length of attributes data
+ * @arg nlh netlink message header
+ * @arg hdrlen length of family specific header
+ */
+static inline int nlmsg_attrlen(const struct nlmsghdr *nlh, int hdrlen)
+{
+ return nlmsg_len(nlh) - NLMSG_ALIGN(hdrlen);
+}
+
+static inline int nlmsg_valid_hdr(const struct nlmsghdr *nlh, int hdrlen)
+{
+ if (nlh->nlmsg_len < nlmsg_msg_size(hdrlen))
+ return 0;
+
+ return 1;
+}
+
+
+static inline void nlmsg_set_proto(struct nl_msg *msg, int protocol)
+{
+ msg->nm_protocol = protocol;
+}
+
+static inline int nlmsg_get_proto(struct nl_msg *msg)
+{
+ return msg->nm_protocol;
+}
+
+static inline size_t nlmsg_get_max_size(struct nl_msg *msg)
+{
+ return msg->nm_size;
+}
+
+static inline void nlmsg_set_src(struct nl_msg *msg, struct sockaddr_nl *addr)
+{
+ memcpy(&msg->nm_src, addr, sizeof(*addr));
+}
+
+static inline struct sockaddr_nl *nlmsg_get_src(struct nl_msg *msg)
+{
+ return &msg->nm_src;
+}
+
+static inline void nlmsg_set_dst(struct nl_msg *msg, struct sockaddr_nl *addr)
+{
+ memcpy(&msg->nm_dst, addr, sizeof(*addr));
+}
+
+static inline struct sockaddr_nl *nlmsg_get_dst(struct nl_msg *msg)
+{
+ return &msg->nm_dst;
+}
+
+static inline void nlmsg_set_creds(struct nl_msg *msg, struct ucred *creds)
+{
+ memcpy(&msg->nm_creds, creds, sizeof(*creds));
+ msg->nm_flags |= NL_MSG_CRED_PRESENT;
+}
+
+static inline struct ucred *nlmsg_get_creds(struct nl_msg *msg)
+{
+ if (msg->nm_flags & NL_MSG_CRED_PRESENT)
+ return &msg->nm_creds;
+ return NULL;
+}
+
+/**
+ * Return actual netlink message
+ * @arg n netlink message
+ *
+ * Returns the actual netlink message casted to the type of the netlink
+ * message header.
+ *
+ * @return A pointer to the netlink message.
+ */
+static inline struct nlmsghdr *nlmsg_hdr(struct nl_msg *n)
+{
+ return n->nm_nlh;
+}
+
+/**
+ * Acquire a reference on a netlink message
+ * @arg msg message to acquire reference from
+ */
+static inline void nlmsg_get(struct nl_msg *msg)
+{
+ msg->nm_refcnt++;
+}
+
+/**
+ * Expand maximum payload size of a netlink message
+ * @arg n Netlink message.
+ * @arg newlen New maximum payload size.
+ *
+ * Reallocates the payload section of a netlink message and increases
+ * the maximum payload size of the message.
+ *
+ * @note Any pointers pointing to old payload block will be stale and
+ * need to be refetched. Therfore, do not expand while constructing
+ * nested attributes or while reserved data blocks are held.
+ *
+ * @return 0 on success or a negative error code.
+ */
+static inline int nlmsg_expand(struct nl_msg *n, size_t newlen)
+{
+ void *tmp;
+
+ if (newlen <= n->nm_size)
+ return -NLE_INVAL;
+
+ tmp = realloc(n->nm_nlh, newlen);
+ if (tmp == NULL)
+ return -NLE_NOMEM;
+
+ n->nm_nlh = tmp;
+ n->nm_size = newlen;
+
+ return 0;
+}
+
+
+/**
+ * @name Iterators
+ * @{
+ */
+
+/**
+ * @ingroup msg
+ * Iterate over a stream of attributes in a message
+ * @arg pos loop counter, set to current attribute
+ * @arg nlh netlink message header
+ * @arg hdrlen length of family header
+ * @arg rem initialized to len, holds bytes currently remaining in stream
+ */
+#define nlmsg_for_each_attr(pos, nlh, hdrlen, rem) \
+ nla_for_each_attr(pos, nlmsg_attrdata(nlh, hdrlen), \
+ nlmsg_attrlen(nlh, hdrlen), rem)
+
+/**
+ * Iterate over a stream of messages
+ * @arg pos loop counter, set to current message
+ * @arg head head of message stream
+ * @arg len length of message stream
+ * @arg rem initialized to len, holds bytes currently remaining in stream
+ */
+#define nlmsg_for_each_msg(pos, head, len, rem) \
+ for (pos = head, rem = len; \
+ nlmsg_ok(pos, rem); \
+ pos = nlmsg_next(pos, &(rem)))
+
+/** @} */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
--- /dev/null
+/*
+ * netlink/netlink-compat.h Netlink Compatability
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation version 2.1
+ * of the License.
+ *
+ * Copyright (c) 2003-2006 Thomas Graf <tgraf@suug.ch>
+ */
+
+#ifndef NETLINK_COMPAT_H_
+#define NETLINK_COMPAT_H_
+
+#if !defined _LINUX_SOCKET_H && !defined _BITS_SOCKADDR_H
+typedef unsigned short sa_family_t;
+#endif
+
+#ifndef IFNAMSIZ
+/** Maximum length of a interface name */
+#define IFNAMSIZ 16
+#endif
+
+/* patch 2.4.x if_arp */
+#ifndef ARPHRD_INFINIBAND
+#define ARPHRD_INFINIBAND 32
+#endif
+
+/* patch 2.4.x eth header file */
+#ifndef ETH_P_MPLS_UC
+#define ETH_P_MPLS_UC 0x8847
+#endif
+
+#ifndef ETH_P_MPLS_MC
+#define ETH_P_MPLS_MC 0x8848
+#endif
+
+#ifndef ETH_P_EDP2
+#define ETH_P_EDP2 0x88A2
+#endif
+
+#ifndef ETH_P_HDLC
+#define ETH_P_HDLC 0x0019
+#endif
+
+#ifndef AF_LLC
+#define AF_LLC 26
+#endif
+
+#endif
--- /dev/null
+#ifndef __LINUX_NETLINK_H
+#define __LINUX_NETLINK_H
+
+/**
+ * Netlink socket address
+ * @ingroup nl
+ */
+struct sockaddr_nl
+{
+ /** socket family (AF_NETLINK) */
+ sa_family_t nl_family;
+
+ /** Padding (unused) */
+ unsigned short nl_pad;
+
+ /** Unique process ID */
+ uint32_t nl_pid;
+
+ /** Multicast group subscriptions */
+ uint32_t nl_groups;
+};
+
+/**
+ * Netlink message header
+ * @ingroup msg
+ */
+struct nlmsghdr
+{
+ /**
+ * Length of message including header.
+ */
+ uint32_t nlmsg_len;
+
+ /**
+ * Message type (content type)
+ */
+ uint16_t nlmsg_type;
+
+ /**
+ * Message flags
+ */
+ uint16_t nlmsg_flags;
+
+ /**
+ * Sequence number
+ */
+ uint32_t nlmsg_seq;
+
+ /**
+ * Netlink PID of the proccess sending the message.
+ */
+ uint32_t nlmsg_pid;
+};
+
+/**
+ * @name Standard message flags
+ * @{
+ */
+
+/**
+ * Must be set on all request messages (typically from user space to
+ * kernel space).
+ * @ingroup msg
+ */
+#define NLM_F_REQUEST 1
+
+/**
+ * Indicates the message is part of a multipart message terminated
+ * by NLMSG_DONE.
+ */
+#define NLM_F_MULTI 2
+
+/**
+ * Request for an acknowledgment on success.
+ */
+#define NLM_F_ACK 4
+
+/**
+ * Echo this request
+ */
+#define NLM_F_ECHO 8
+
+/** @} */
+
+/**
+ * @name Additional message flags for GET requests
+ * @{
+ */
+
+/**
+ * Return the complete table instead of a single entry.
+ * @ingroup msg
+ */
+#define NLM_F_ROOT 0x100
+
+/**
+ * Return all entries matching criteria passed in message content.
+ */
+#define NLM_F_MATCH 0x200
+
+/**
+ * Return an atomic snapshot of the table being referenced. This
+ * may require special privileges because it has the potential to
+ * interrupt service in the FE for a longer time.
+ */
+#define NLM_F_ATOMIC 0x400
+
+/**
+ * Dump all entries
+ */
+#define NLM_F_DUMP (NLM_F_ROOT|NLM_F_MATCH)
+
+/** @} */
+
+/**
+ * @name Additional messsage flags for NEW requests
+ * @{
+ */
+
+/**
+ * Replace existing matching config object with this request.
+ * @ingroup msg
+ */
+#define NLM_F_REPLACE 0x100
+
+/**
+ * Don't replace the config object if it already exists.
+ */
+#define NLM_F_EXCL 0x200
+
+/**
+ * Create config object if it doesn't already exist.
+ */
+#define NLM_F_CREATE 0x400
+
+/**
+ * Add to the end of the object list.
+ */
+#define NLM_F_APPEND 0x800
+
+/** @} */
+
+/**
+ * @name Standard Message types
+ * @{
+ */
+
+/**
+ * No operation, message must be ignored
+ * @ingroup msg
+ */
+#define NLMSG_NOOP 0x1
+
+/**
+ * The message signals an error and the payload contains a nlmsgerr
+ * structure. This can be looked at as a NACK and typically it is
+ * from FEC to CPC.
+ */
+#define NLMSG_ERROR 0x2
+
+/**
+ * Message terminates a multipart message.
+ */
+#define NLMSG_DONE 0x3
+
+/**
+ * The message signals that data got lost
+ */
+#define NLMSG_OVERRUN 0x4
+
+/**
+ * Lower limit of reserved message types
+ */
+#define NLMSG_MIN_TYPE 0x10
+
+/** @} */
+
+/**
+ * Netlink error message
+ * @ingroup msg
+ */
+struct nlmsgerr
+{
+ /** Error code (errno number) */
+ int error;
+
+ /** Original netlink message causing the error */
+ struct nlmsghdr msg;
+};
+
+struct nl_pktinfo
+{
+ __u32 group;
+};
+
+#endif /* __LINUX_NETLINK_H */
--- /dev/null
+/*
+ * netlink/netlink.h Netlink Interface
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation version 2.1
+ * of the License.
+ *
+ * Copyright (c) 2003-2006 Thomas Graf <tgraf@suug.ch>
+ */
+
+#ifndef NETLINK_NETLINK_H_
+#define NETLINK_NETLINK_H_
+
+#include <stdio.h>
+#include <stdint.h>
+#include <string.h>
+#include <stdlib.h>
+#include <sys/poll.h>
+#include <sys/socket.h>
+#include <sys/types.h>
+#include <sys/time.h>
+#include <netdb.h>
+#include <netlink/netlink-compat.h>
+#include <linux/netlink.h>
+#include <linux/genetlink.h>
+#include <netlink/version.h>
+#include <netlink/errno.h>
+#include <netlink/types.h>
+#include <netlink/handlers.h>
+#include <netlink/socket.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+extern int nl_debug;
+extern struct nl_dump_params nl_debug_dp;
+
+/* Connection Management */
+extern int nl_connect(struct nl_sock *, int);
+extern void nl_close(struct nl_sock *);
+
+/* Send */
+extern int nl_sendto(struct nl_sock *, void *, size_t);
+extern int nl_sendmsg(struct nl_sock *, struct nl_msg *,
+ struct msghdr *);
+extern int nl_send(struct nl_sock *, struct nl_msg *);
+extern int nl_send_auto_complete(struct nl_sock *,
+ struct nl_msg *);
+extern int nl_send_simple(struct nl_sock *, int, int,
+ void *, size_t);
+
+/* Receive */
+extern int nl_recv(struct nl_sock *,
+ struct sockaddr_nl *, unsigned char **,
+ struct ucred **);
+extern int nl_recvmsgs(struct nl_sock *sk, struct nl_cb *cb);
+
+extern int nl_wait_for_ack(struct nl_sock *);
+
+/* Netlink Family Translations */
+extern char * nl_nlfamily2str(int, char *, size_t);
+extern int nl_str2nlfamily(const char *);
+
+/**
+ * Receive a set of message from a netlink socket using handlers in nl_sock.
+ * @arg sk Netlink socket.
+ *
+ * Calls nl_recvmsgs() with the handlers configured in the netlink socket.
+ */
+static inline int nl_recvmsgs_default(struct nl_sock *sk)
+{
+ return nl_recvmsgs(sk, sk->s_cb);
+}
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
--- /dev/null
+/*
+ * netlink/object-api.c Object API
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation version 2.1
+ * of the License.
+ *
+ * Copyright (c) 2003-2007 Thomas Graf <tgraf@suug.ch>
+ */
+
+#ifndef NETLINK_OBJECT_API_H_
+#define NETLINK_OBJECT_API_H_
+
+#include <netlink/netlink.h>
+#include <netlink/utils.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @ingroup object
+ * @defgroup object_api Object API
+ * @brief
+ *
+ * @par 1) Object Definition
+ * @code
+ * // Define your object starting with the common object header
+ * struct my_obj {
+ * NLHDR_COMMON
+ * int my_data;
+ * };
+ *
+ * // Fill out the object operations structure
+ * struct nl_object_ops my_ops = {
+ * .oo_name = "my_obj",
+ * .oo_size = sizeof(struct my_obj),
+ * };
+ *
+ * // At this point the object can be allocated, you may want to provide a
+ * // separate _alloc() function to ease allocting objects of this kind.
+ * struct nl_object *obj = nl_object_alloc(&my_ops);
+ *
+ * // And release it again...
+ * nl_object_put(obj);
+ * @endcode
+ *
+ * @par 2) Allocating additional data
+ * @code
+ * // You may require to allocate additional data and store it inside
+ * // object, f.e. assuming there is a field `ptr'.
+ * struct my_obj {
+ * NLHDR_COMMON
+ * void * ptr;
+ * };
+ *
+ * // And at some point you may assign allocated data to this field:
+ * my_obj->ptr = calloc(1, ...);
+ *
+ * // In order to not introduce any memory leaks you have to release
+ * // this data again when the last reference is given back.
+ * static void my_obj_free_data(struct nl_object *obj)
+ * {
+ * struct my_obj *my_obj = nl_object_priv(obj);
+ *
+ * free(my_obj->ptr);
+ * }
+ *
+ * // Also when the object is cloned, you must ensure for your pointer
+ * // stay valid even if one of the clones is freed by either making
+ * // a clone as well or increase the reference count.
+ * static int my_obj_clone(struct nl_object *src, struct nl_object *dst)
+ * {
+ * struct my_obj *my_src = nl_object_priv(src);
+ * struct my_obj *my_dst = nl_object_priv(dst);
+ *
+ * if (src->ptr) {
+ * dst->ptr = calloc(1, ...);
+ * memcpy(dst->ptr, src->ptr, ...);
+ * }
+ * }
+ *
+ * struct nl_object_ops my_ops = {
+ * ...
+ * .oo_free_data = my_obj_free_data,
+ * .oo_clone = my_obj_clone,
+ * };
+ * @endcode
+ *
+ * @par 3) Object Dumping
+ * @code
+ * static int my_obj_dump_detailed(struct nl_object *obj,
+ * struct nl_dump_params *params)
+ * {
+ * struct my_obj *my_obj = nl_object_priv(obj);
+ *
+ * // It is absolutely essential to use nl_dump() when printing
+ * // any text to make sure the dumping parameters are respected.
+ * nl_dump(params, "Obj Integer: %d\n", my_obj->my_int);
+ *
+ * // Before we can dump the next line, make sure to prefix
+ * // this line correctly.
+ * nl_new_line(params);
+ *
+ * // You may also split a line into multiple nl_dump() calls.
+ * nl_dump(params, "String: %s ", my_obj->my_string);
+ * nl_dump(params, "String-2: %s\n", my_obj->another_string);
+ * }
+ *
+ * struct nl_object_ops my_ops = {
+ * ...
+ * .oo_dump[NL_DUMP_FULL] = my_obj_dump_detailed,
+ * };
+ * @endcode
+ *
+ * @par 4) Object Attributes
+ * @code
+ * // The concept of object attributes is optional but can ease the typical
+ * // case of objects that have optional attributes, e.g. a route may have a
+ * // nexthop assigned but it is not required to.
+ *
+ * // The first step to define your object specific bitmask listing all
+ * // attributes
+ * #define MY_ATTR_FOO (1<<0)
+ * #define MY_ATTR_BAR (1<<1)
+ *
+ * // When assigning an optional attribute to the object, make sure
+ * // to mark its availability.
+ * my_obj->foo = 123123;
+ * my_obj->ce_mask |= MY_ATTR_FOO;
+ *
+ * // At any time you may use this mask to check for the availability
+ * // of the attribute, e.g. while dumping
+ * if (my_obj->ce_mask & MY_ATTR_FOO)
+ * nl_dump(params, "foo %d ", my_obj->foo);
+ *
+ * // One of the big advantages of this concept is that it allows for
+ * // standardized comparisons which make it trivial for caches to
+ * // identify unique objects by use of unified comparison functions.
+ * // In order for it to work, your object implementation must provide
+ * // a comparison function and define a list of attributes which
+ * // combined together make an object unique.
+ *
+ * static int my_obj_compare(struct nl_object *_a, struct nl_object *_b,
+ * uint32_t attrs, int flags)
+ * {
+ * struct my_obj *a = nl_object_priv(_a):
+ * struct my_obj *b = nl_object_priv(_b):
+ * int diff = 0;
+ *
+ * // We help ourselves in defining our own DIFF macro which will
+ * // call ATTR_DIFF() on both objects which will make sure to only
+ * // compare the attributes if required.
+ * #define MY_DIFF(ATTR, EXPR) ATTR_DIFF(attrs, MY_ATTR_##ATTR, a, b, EXPR)
+ *
+ * // Call our own diff macro for each attribute to build a bitmask
+ * // representing the attributes which mismatch.
+ * diff |= MY_DIFF(FOO, a->foo != b->foo)
+ * diff |= MY_DIFF(BAR, strcmp(a->bar, b->bar))
+ *
+ * return diff;
+ * }
+ *
+ * // In order to identify identical objects with differing attributes
+ * // you must specify the attributes required to uniquely identify
+ * // your object. Make sure to not include too many attributes, this
+ * // list is used when caches look for an old version of an object.
+ * struct nl_object_ops my_ops = {
+ * ...
+ * .oo_id_attrs = MY_ATTR_FOO,
+ * .oo_compare = my_obj_compare,
+ * };
+ * @endcode
+ * @{
+ */
+
+/**
+ * Common Object Header
+ *
+ * This macro must be included as first member in every object
+ * definition to allow objects to be cached.
+ */
+#define NLHDR_COMMON \
+ int ce_refcnt; \
+ struct nl_object_ops * ce_ops; \
+ struct nl_cache * ce_cache; \
+ struct nl_list_head ce_list; \
+ int ce_msgtype; \
+ int ce_flags; \
+ uint32_t ce_mask;
+
+/**
+ * Return true if attribute is available in both objects
+ * @arg A an object
+ * @arg B another object
+ * @arg ATTR attribute bit
+ *
+ * @return True if the attribute is available, otherwise false is returned.
+ */
+#define AVAILABLE(A, B, ATTR) (((A)->ce_mask & (B)->ce_mask) & (ATTR))
+
+/**
+ * Return true if attributes mismatch
+ * @arg A an object
+ * @arg B another object
+ * @arg ATTR attribute bit
+ * @arg EXPR Comparison expression
+ *
+ * This function will check if the attribute in question is available
+ * in both objects, if not this will count as a mismatch.
+ *
+ * If available the function will execute the expression which must
+ * return true if the attributes mismatch.
+ *
+ * @return True if the attribute mismatch, or false if they match.
+ */
+#define ATTR_MISMATCH(A, B, ATTR, EXPR) (!AVAILABLE(A, B, ATTR) || (EXPR))
+
+/**
+ * Return attribute bit if attribute does not match
+ * @arg LIST list of attributes to be compared
+ * @arg ATTR attribute bit
+ * @arg A an object
+ * @arg B another object
+ * @arg EXPR Comparison expression
+ *
+ * This function will check if the attribute in question is available
+ * in both objects, if not this will count as a mismatch.
+ *
+ * If available the function will execute the expression which must
+ * return true if the attributes mismatch.
+ *
+ * In case the attributes mismatch, the attribute is returned, otherwise
+ * 0 is returned.
+ *
+ * @code
+ * diff |= ATTR_DIFF(attrs, MY_ATTR_FOO, a, b, a->foo != b->foo);
+ * @endcode
+ */
+#define ATTR_DIFF(LIST, ATTR, A, B, EXPR) \
+({ int diff = 0; \
+ if (((LIST) & (ATTR)) && ATTR_MISMATCH(A, B, ATTR, EXPR)) \
+ diff = ATTR; \
+ diff; })
+
+/**
+ * Object Operations
+ */
+struct nl_object;
+struct nl_object_ops
+{
+ /**
+ * Unique name of object type
+ *
+ * Must be in the form family/name, e.g. "route/addr"
+ */
+ char * oo_name;
+
+ /** Size of object including its header */
+ size_t oo_size;
+
+ /* List of attributes needed to uniquely identify the object */
+ uint32_t oo_id_attrs;
+
+ /**
+ * Constructor function
+ *
+ * Will be called when a new object of this type is allocated.
+ * Can be used to initialize members such as lists etc.
+ */
+ void (*oo_constructor)(struct nl_object *);
+
+ /**
+ * Destructor function
+ *
+ * Will be called when an object is freed. Must free all
+ * resources which may have been allocated as part of this
+ * object.
+ */
+ void (*oo_free_data)(struct nl_object *);
+
+ /**
+ * Cloning function
+ *
+ * Will be called when an object needs to be cloned. Please
+ * note that the generic object code will make an exact
+ * copy of the object first, therefore you only need to take
+ * care of members which require reference counting etc.
+ *
+ * May return a negative error code to abort cloning.
+ */
+ int (*oo_clone)(struct nl_object *, struct nl_object *);
+
+ /**
+ * Dumping functions
+ *
+ * Will be called when an object is dumped. The implementations
+ * have to use nl_dump(), nl_dump_line(), and nl_new_line() to
+ * dump objects.
+ *
+ * The functions must return the number of lines printed.
+ */
+ void (*oo_dump[NL_DUMP_MAX+1])(struct nl_object *,
+ struct nl_dump_params *);
+
+ /**
+ * Comparison function
+ *
+ * Will be called when two objects of the same type are
+ * compared. It takes the two objects in question, an object
+ * specific bitmask defining which attributes should be
+ * compared and flags to control the behaviour.
+ *
+ * The function must return a bitmask with the relevant bit
+ * set for each attribute that mismatches.
+ */
+ int (*oo_compare)(struct nl_object *, struct nl_object *,
+ uint32_t, int);
+
+
+ char *(*oo_attrs2str)(int, char *, size_t);
+};
+
+/** @} */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
--- /dev/null
+/*
+ * netlink/object.c Generic Cacheable Object
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation version 2.1
+ * of the License.
+ *
+ * Copyright (c) 2003-2008 Thomas Graf <tgraf@suug.ch>
+ */
+
+#ifndef NETLINK_OBJECT_H_
+#define NETLINK_OBJECT_H_
+
+#include <netlink/netlink.h>
+#include <netlink/utils.h>
+#include <netlink/object-api.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define NL_OBJ_MARK 1
+
+struct nl_cache;
+struct nl_object;
+struct nl_object_ops;
+
+struct nl_object
+{
+ NLHDR_COMMON
+};
+
+#define OBJ_CAST(ptr) ((struct nl_object *) (ptr))
+
+/* General */
+extern struct nl_object * nl_object_alloc(struct nl_object_ops *);
+extern int nl_object_alloc_name(const char *,
+ struct nl_object **);
+extern void nl_object_free(struct nl_object *);
+extern struct nl_object * nl_object_clone(struct nl_object *obj);
+extern void nl_object_get(struct nl_object *);
+extern void nl_object_put(struct nl_object *);
+extern void nl_object_dump(struct nl_object *,
+ struct nl_dump_params *);
+extern int nl_object_identical(struct nl_object *,
+ struct nl_object *);
+extern uint32_t nl_object_diff(struct nl_object *,
+ struct nl_object *);
+extern int nl_object_match_filter(struct nl_object *,
+ struct nl_object *);
+extern char * nl_object_attrs2str(struct nl_object *,
+ uint32_t attrs, char *buf,
+ size_t);
+/**
+ * Check whether this object is used by multiple users
+ * @arg obj object to check
+ * @return true or false
+ */
+static inline int nl_object_shared(struct nl_object *obj)
+{
+ return obj->ce_refcnt > 1;
+}
+
+
+
+/**
+ * @name Marks
+ * @{
+ */
+
+/**
+ * Add mark to object
+ * @arg obj Object to mark
+ */
+static inline void nl_object_mark(struct nl_object *obj)
+{
+ obj->ce_flags |= NL_OBJ_MARK;
+}
+
+/**
+ * Remove mark from object
+ * @arg obj Object to unmark
+ */
+static inline void nl_object_unmark(struct nl_object *obj)
+{
+ obj->ce_flags &= ~NL_OBJ_MARK;
+}
+
+/**
+ * Return true if object is marked
+ * @arg obj Object to check
+ * @return true if object is marked, otherwise false
+ */
+static inline int nl_object_is_marked(struct nl_object *obj)
+{
+ return (obj->ce_flags & NL_OBJ_MARK);
+}
+
+/** @} */
+
+/**
+ * Return list of attributes present in an object
+ * @arg obj an object
+ * @arg buf destination buffer
+ * @arg len length of destination buffer
+ *
+ * @return destination buffer.
+ */
+static inline char *nl_object_attr_list(struct nl_object *obj, char *buf, size_t len)
+{
+ return nl_object_attrs2str(obj, obj->ce_mask, buf, len);
+}
+
+
+/**
+ * @name Attributes
+ * @{
+ */
+
+static inline int nl_object_get_refcnt(struct nl_object *obj)
+{
+ return obj->ce_refcnt;
+}
+
+static inline struct nl_cache *nl_object_get_cache(struct nl_object *obj)
+{
+ return obj->ce_cache;
+}
+
+static inline void * nl_object_priv(struct nl_object *obj)
+{
+ return obj;
+}
+
+
+/** @} */
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
--- /dev/null
+/*
+ * netlink/socket.h Netlink Socket
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation version 2.1
+ * of the License.
+ *
+ * Copyright (c) 2003-2008 Thomas Graf <tgraf@suug.ch>
+ */
+
+#ifndef NETLINK_SOCKET_H_
+#define NETLINK_SOCKET_H_
+
+#include <netlink/types.h>
+#include <netlink/handlers.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define NL_SOCK_BUFSIZE_SET (1<<0)
+#define NL_SOCK_PASSCRED (1<<1)
+#define NL_OWN_PORT (1<<2)
+#define NL_MSG_PEEK (1<<3)
+#define NL_NO_AUTO_ACK (1<<4)
+
+struct nl_cb;
+struct nl_sock
+{
+ struct sockaddr_nl s_local;
+ struct sockaddr_nl s_peer;
+ int s_fd;
+ int s_proto;
+ unsigned int s_seq_next;
+ unsigned int s_seq_expect;
+ int s_flags;
+ struct nl_cb * s_cb;
+};
+
+
+extern struct nl_sock * nl_socket_alloc(void);
+extern struct nl_sock * nl_socket_alloc_cb(struct nl_cb *);
+extern void nl_socket_free(struct nl_sock *);
+
+extern void nl_socket_set_local_port(struct nl_sock *, uint32_t);
+
+extern int nl_socket_add_memberships(struct nl_sock *, int, ...);
+extern int nl_socket_drop_memberships(struct nl_sock *, int, ...);
+
+extern int nl_socket_set_buffer_size(struct nl_sock *, int, int);
+extern int nl_socket_set_passcred(struct nl_sock *, int);
+extern int nl_socket_recv_pktinfo(struct nl_sock *, int);
+
+extern void nl_socket_disable_seq_check(struct nl_sock *);
+
+extern int nl_socket_set_nonblocking(struct nl_sock *);
+
+/**
+ * Use next sequence number
+ * @arg sk Netlink socket.
+ *
+ * Uses the next available sequence number and increases the counter
+ * by one for subsequent calls.
+ *
+ * @return Unique serial sequence number
+ */
+static inline unsigned int nl_socket_use_seq(struct nl_sock *sk)
+{
+ return sk->s_seq_next++;
+}
+
+/**
+ * Disable automatic request for ACK
+ * @arg sk Netlink socket.
+ *
+ * The default behaviour of a socket is to request an ACK for
+ * each message sent to allow for the caller to synchronize to
+ * the completion of the netlink operation. This function
+ * disables this behaviour and will result in requests being
+ * sent which will not have the NLM_F_ACK flag set automatically.
+ * However, it is still possible for the caller to set the
+ * NLM_F_ACK flag explicitely.
+ */
+static inline void nl_socket_disable_auto_ack(struct nl_sock *sk)
+{
+ sk->s_flags |= NL_NO_AUTO_ACK;
+}
+
+/**
+ * Enable automatic request for ACK (default)
+ * @arg sk Netlink socket.
+ * @see nl_socket_disable_auto_ack
+ */
+static inline void nl_socket_enable_auto_ack(struct nl_sock *sk)
+{
+ sk->s_flags &= ~NL_NO_AUTO_ACK;
+}
+
+/**
+ * @name Source Idenficiation
+ * @{
+ */
+
+static inline uint32_t nl_socket_get_local_port(struct nl_sock *sk)
+{
+ return sk->s_local.nl_pid;
+}
+
+/**
+ * Join multicast groups (deprecated)
+ * @arg sk Netlink socket.
+ * @arg groups Bitmask of groups to join.
+ *
+ * This function defines the old way of joining multicast group which
+ * has to be done prior to calling nl_connect(). It works on any kernel
+ * version but is very limited as only 32 groups can be joined.
+ */
+static inline void nl_join_groups(struct nl_sock *sk, int groups)
+{
+ sk->s_local.nl_groups |= groups;
+}
+
+/**
+ * @name Peer Identfication
+ * @{
+ */
+
+static inline uint32_t nl_socket_get_peer_port(struct nl_sock *sk)
+{
+ return sk->s_peer.nl_pid;
+}
+
+static inline void nl_socket_set_peer_port(struct nl_sock *sk, uint32_t port)
+{
+ sk->s_peer.nl_pid = port;
+}
+
+/** @} */
+
+/**
+ * @name File Descriptor
+ * @{
+ */
+
+static inline int nl_socket_get_fd(struct nl_sock *sk)
+{
+ return sk->s_fd;
+}
+
+/**
+ * Enable use of MSG_PEEK when reading from socket
+ * @arg sk Netlink socket.
+ */
+static inline void nl_socket_enable_msg_peek(struct nl_sock *sk)
+{
+ sk->s_flags |= NL_MSG_PEEK;
+}
+
+/**
+ * Disable use of MSG_PEEK when reading from socket
+ * @arg sk Netlink socket.
+ */
+static inline void nl_socket_disable_msg_peek(struct nl_sock *sk)
+{
+ sk->s_flags &= ~NL_MSG_PEEK;
+}
+
+/**
+ * @name Callback Handler
+ * @{
+ */
+
+static inline struct nl_cb *nl_socket_get_cb(struct nl_sock *sk)
+{
+ return nl_cb_get(sk->s_cb);
+}
+
+static inline void nl_socket_set_cb(struct nl_sock *sk, struct nl_cb *cb)
+{
+ nl_cb_put(sk->s_cb);
+ sk->s_cb = nl_cb_get(cb);
+}
+
+/**
+ * Modify the callback handler associated to the socket
+ * @arg sk Netlink socket.
+ * @arg type which type callback to set
+ * @arg kind kind of callback
+ * @arg func callback function
+ * @arg arg argument to be passwd to callback function
+ *
+ * @see nl_cb_set
+ */
+static inline int nl_socket_modify_cb(struct nl_sock *sk, enum nl_cb_type type,
+ enum nl_cb_kind kind, nl_recvmsg_msg_cb_t func,
+ void *arg)
+{
+ return nl_cb_set(sk->s_cb, type, kind, func, arg);
+}
+
+/** @} */
+
+static inline int nl_socket_add_membership(struct nl_sock *sk, int group)
+{
+ return nl_socket_add_memberships(sk, group, 0);
+}
+
+
+static inline int nl_socket_drop_membership(struct nl_sock *sk, int group)
+{
+ return nl_socket_drop_memberships(sk, group, 0);
+}
+
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
--- /dev/null
+/*
+ * netlink/netlink-types.h Netlink Types
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation version 2.1
+ * of the License.
+ *
+ * Copyright (c) 2003-2006 Thomas Graf <tgraf@suug.ch>
+ */
+
+#ifndef __NETLINK_TYPES_H_
+#define __NETLINK_TYPES_H_
+
+#include <stdio.h>
+
+/**
+ * Dumping types (dp_type)
+ * @ingroup utils
+ */
+enum nl_dump_type {
+ NL_DUMP_LINE, /**< Dump object briefly on one line */
+ NL_DUMP_DETAILS, /**< Dump all attributes but no statistics */
+ NL_DUMP_STATS, /**< Dump all attributes including statistics */
+ NL_DUMP_ENV, /**< Dump all attribtues as env variables */
+ __NL_DUMP_MAX,
+};
+#define NL_DUMP_MAX (__NL_DUMP_MAX - 1)
+
+/**
+ * Dumping parameters
+ * @ingroup utils
+ */
+struct nl_dump_params
+{
+ /**
+ * Specifies the type of dump that is requested.
+ */
+ enum nl_dump_type dp_type;
+
+ /**
+ * Specifies the number of whitespaces to be put in front
+ * of every new line (indentation).
+ */
+ int dp_prefix;
+
+ /**
+ * Causes the cache index to be printed for each element.
+ */
+ int dp_print_index;
+
+ /**
+ * Causes each element to be prefixed with the message type.
+ */
+ int dp_dump_msgtype;
+
+ /**
+ * A callback invoked for output
+ *
+ * Passed arguments are:
+ * - dumping parameters
+ * - string to append to the output
+ */
+ void (*dp_cb)(struct nl_dump_params *, char *);
+
+ /**
+ * A callback invoked for every new line, can be used to
+ * customize the indentation.
+ *
+ * Passed arguments are:
+ * - dumping parameters
+ * - line number starting from 0
+ */
+ void (*dp_nl_cb)(struct nl_dump_params *, int);
+
+ /**
+ * User data pointer, can be used to pass data to callbacks.
+ */
+ void *dp_data;
+
+ /**
+ * File descriptor the dumping output should go to
+ */
+ FILE * dp_fd;
+
+ /**
+ * Alternatively the output may be redirected into a buffer
+ */
+ char * dp_buf;
+
+ /**
+ * Length of the buffer dp_buf
+ */
+ size_t dp_buflen;
+
+ /**
+ * PRIVATE
+ * Set if a dump was performed prior to the actual dump handler.
+ */
+ int dp_pre_dump;
+
+ /**
+ * PRIVATE
+ * Owned by the current caller
+ */
+ int dp_ivar;
+
+ unsigned int dp_line;
+};
+
+#define min_t(type,x,y) \
+ ({ type __x = (x); type __y = (y); __x < __y ? __x: __y; })
+#define max_t(type,x,y) \
+ ({ type __x = (x); type __y = (y); __x > __y ? __x: __y; })
+
+
+#endif
--- /dev/null
+/*
+ * netlink/utils.h Utility Functions
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation version 2.1
+ * of the License.
+ *
+ * Copyright (c) 2003-2008 Thomas Graf <tgraf@suug.ch>
+ */
+
+#ifndef NETLINK_UTILS_H_
+#define NETLINK_UTILS_H_
+
+#include <netlink/netlink.h>
+#include <netlink/list.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @name Probability Constants
+ * @{
+ */
+
+/**
+ * Lower probability limit
+ * @ingroup utils
+ */
+#define NL_PROB_MIN 0x0
+
+/**
+ * Upper probability limit
+ * @ingroup utils
+ */
+#define NL_PROB_MAX 0xffffffff
+
+/** @} */
+
+/* unit pretty-printing */
+extern double nl_cancel_down_bytes(unsigned long long, char **);
+extern double nl_cancel_down_bits(unsigned long long, char **);
+extern double nl_cancel_down_us(uint32_t, char **);
+
+/* generic unit translations */
+extern long nl_size2int(const char *);
+extern long nl_prob2int(const char *);
+
+/* time translations */
+extern int nl_get_hz(void);
+extern uint32_t nl_us2ticks(uint32_t);
+extern uint32_t nl_ticks2us(uint32_t);
+extern int nl_str2msec(const char *, uint64_t *);
+extern char * nl_msec2str(uint64_t, char *, size_t);
+
+/* link layer protocol translations */
+extern char * nl_llproto2str(int, char *, size_t);
+extern int nl_str2llproto(const char *);
+
+/* ethernet protocol translations */
+extern char * nl_ether_proto2str(int, char *, size_t);
+extern int nl_str2ether_proto(const char *);
+
+/* IP protocol translations */
+extern char * nl_ip_proto2str(int, char *, size_t);
+extern int nl_str2ip_proto(const char *);
+
+/* Dumping helpers */
+extern void nl_new_line(struct nl_dump_params *);
+extern void nl_dump(struct nl_dump_params *, const char *, ...);
+extern void nl_dump_line(struct nl_dump_params *, const char *, ...);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
--- /dev/null
+/*
+ * netlink/version.h Compile Time Versioning Information
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation version 2.1
+ * of the License.
+ *
+ * Copyright (c) 2008 Thomas Graf <tgraf@suug.ch>
+ */
+
+#ifndef NETLINK_VERSION_H_
+#define NETLINK_VERSION_H_
+
+#define LIBNL_STRING "libnl"
+#define LIBNL_VERSION "2.0"
+
+#endif
--- /dev/null
+/*
+ * lib/msg.c Netlink Messages Interface
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation version 2.1
+ * of the License.
+ *
+ * Copyright (c) 2003-2008 Thomas Graf <tgraf@suug.ch>
+ */
+
+/**
+ * @ingroup core
+ * @defgroup msg Messages
+ * Netlink Message Construction/Parsing Interface
+ *
+ * The following information is partly extracted from RFC3549
+ * (ftp://ftp.rfc-editor.org/in-notes/rfc3549.txt)
+ *
+ * @par Message Format
+ * Netlink messages consist of a byte stream with one or multiple
+ * Netlink headers and an associated payload. If the payload is too big
+ * to fit into a single message it, can be split over multiple Netlink
+ * messages, collectively called a multipart message. For multipart
+ * messages, the first and all following headers have the \c NLM_F_MULTI
+ * Netlink header flag set, except for the last header which has the
+ * Netlink header type \c NLMSG_DONE.
+ *
+ * @par
+ * The Netlink message header (\link nlmsghdr struct nlmsghdr\endlink) is shown below.
+ * @code
+ * 0 1 2 3
+ * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Length |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Type | Flags |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Sequence Number |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Process ID (PID) |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * @endcode
+ *
+ * @par
+ * The netlink message header and payload must be aligned properly:
+ * @code
+ * <------- NLMSG_ALIGN(hlen) ------> <---- NLMSG_ALIGN(len) --->
+ * +----------------------------+- - -+- - - - - - - - - - -+- - -+
+ * | Header | Pad | Payload | Pad |
+ * | struct nlmsghdr | | | |
+ * +----------------------------+- - -+- - - - - - - - - - -+- - -+
+ * @endcode
+ * @par
+ * Message Format:
+ * @code
+ * <--- nlmsg_total_size(payload) --->
+ * <-- nlmsg_msg_size(payload) ->
+ * +----------+- - -+-------------+- - -+-------- - -
+ * | nlmsghdr | Pad | Payload | Pad | nlmsghdr
+ * +----------+- - -+-------------+- - -+-------- - -
+ * nlmsg_data(nlh)---^ ^
+ * nlmsg_next(nlh)-----------------------+
+ * @endcode
+ * @par
+ * The payload may consist of arbitary data but may have strict
+ * alignment and formatting rules depening on the specific netlink
+ * families.
+ * @par
+ * @code
+ * <---------------------- nlmsg_len(nlh) --------------------->
+ * <------ hdrlen ------> <- nlmsg_attrlen(nlh, hdrlen) ->
+ * +----------------------+- - -+--------------------------------+
+ * | Family Header | Pad | Attributes |
+ * +----------------------+- - -+--------------------------------+
+ * nlmsg_attrdata(nlh, hdrlen)---^
+ * @endcode
+ * @par The ACK Netlink Message
+ * This message is actually used to denote both an ACK and a NACK.
+ * Typically, the direction is from FEC to CPC (in response to an ACK
+ * request message). However, the CPC should be able to send ACKs back
+ * to FEC when requested.
+ * @code
+ * 0 1 2 3
+ * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Netlink message header |
+ * | type = NLMSG_ERROR |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Error code |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | OLD Netlink message header |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * @endcode
+ *
+ * @par Example
+ * @code
+ * // Various methods exist to create/allocate a new netlink
+ * // message.
+ * //
+ * // nlmsg_alloc() will allocate an empty netlink message with
+ * // a maximum payload size which defaults to the page size of
+ * // the system. This default size can be modified using the
+ * // function nlmsg_set_default_size().
+ * struct nl_msg *msg = nlmsg_alloc();
+ *
+ * // Very often, the message type and message flags are known
+ * // at allocation time while the other fields are auto generated:
+ * struct nl_msg *msg = nlmsg_alloc_simple(MY_TYPE, MY_FLAGS);
+ *
+ * // Alternatively an existing netlink message header can be used
+ * // to inherit the header values:
+ * struct nlmsghdr hdr = {
+ * .nlmsg_type = MY_TYPE,
+ * .nlmsg_flags = MY_FLAGS,
+ * };
+ * struct nl_msg *msg = nlmsg_inherit(&hdr);
+ *
+ * // Last but not least, netlink messages received from netlink sockets
+ * // can be converted into nl_msg objects using nlmsg_convert(). This
+ * // will create a message with a maximum payload size which equals the
+ * // length of the existing netlink message, therefore no more data can
+ * // be appened without calling nlmsg_expand() first.
+ * struct nl_msg *msg = nlmsg_convert(nlh_from_nl_sock);
+ *
+ * // Payload may be added to the message via nlmsg_append(). The fourth
+ * // parameter specifies the number of alignment bytes the data should
+ * // be padding with at the end. Common values are 0 to disable it or
+ * // NLMSG_ALIGNTO to ensure proper netlink message padding.
+ * nlmsg_append(msg, &mydata, sizeof(mydata), 0);
+ *
+ * // Sometimes it may be necessary to reserve room for data but defer
+ * // the actual copying to a later point, nlmsg_reserve() can be used
+ * // for this purpose:
+ * void *data = nlmsg_reserve(msg, sizeof(mydata), NLMSG_ALIGNTO);
+ *
+ * // Attributes may be added using the attributes interface.
+ *
+ * // After successful use of the message, the memory must be freed
+ * // using nlmsg_free()
+ * nlmsg_free(msg);
+ * @endcode
+ *
+ * @par 4) Parsing messages
+ * @code
+ * int n;
+ * unsigned char *buf;
+ * struct nlmsghdr *hdr;
+ *
+ * n = nl_recv(handle, NULL, &buf);
+ *
+ * hdr = (struct nlmsghdr *) buf;
+ * while (nlmsg_ok(hdr, n)) {
+ * // Process message here...
+ * hdr = nlmsg_next(hdr, &n);
+ * }
+ * @endcode
+ * @{
+ */
+
+#include <netlink-local.h>
+#include <netlink/netlink.h>
+#include <netlink/utils.h>
+#include <netlink/cache.h>
+#include <netlink/attr.h>
+#include <netlink/msg.h>
+#include <linux/socket.h>
+
+static size_t default_msg_size;
+
+static void __init init_msg_size(void)
+{
+ default_msg_size = getpagesize();
+}
+
+/**
+ * @name Attribute Access
+ * @{
+ */
+
+//** @} */
+
+/**
+ * @name Message Parsing
+ * @{
+ */
+
+/**
+ * check if the netlink message fits into the remaining bytes
+ * @arg nlh netlink message header
+ * @arg remaining number of bytes remaining in message stream
+ */
+int nlmsg_ok(const struct nlmsghdr *nlh, int remaining)
+{
+ return (remaining >= sizeof(struct nlmsghdr) &&
+ nlh->nlmsg_len >= sizeof(struct nlmsghdr) &&
+ nlh->nlmsg_len <= remaining);
+}
+
+/**
+ * next netlink message in message stream
+ * @arg nlh netlink message header
+ * @arg remaining number of bytes remaining in message stream
+ *
+ * @returns the next netlink message in the message stream and
+ * decrements remaining by the size of the current message.
+ */
+struct nlmsghdr *nlmsg_next(struct nlmsghdr *nlh, int *remaining)
+{
+ int totlen = NLMSG_ALIGN(nlh->nlmsg_len);
+
+ *remaining -= totlen;
+
+ return (struct nlmsghdr *) ((unsigned char *) nlh + totlen);
+}
+
+/**
+ * parse attributes of a netlink message
+ * @arg nlh netlink message header
+ * @arg hdrlen length of family specific header
+ * @arg tb destination array with maxtype+1 elements
+ * @arg maxtype maximum attribute type to be expected
+ * @arg policy validation policy
+ *
+ * See nla_parse()
+ */
+int nlmsg_parse(struct nlmsghdr *nlh, int hdrlen, struct nlattr *tb[],
+ int maxtype, struct nla_policy *policy)
+{
+ if (!nlmsg_valid_hdr(nlh, hdrlen))
+ return -NLE_MSG_TOOSHORT;
+
+ return nla_parse(tb, maxtype, nlmsg_attrdata(nlh, hdrlen),
+ nlmsg_attrlen(nlh, hdrlen), policy);
+}
+
+/**
+ * nlmsg_validate - validate a netlink message including attributes
+ * @arg nlh netlinket message header
+ * @arg hdrlen length of familiy specific header
+ * @arg maxtype maximum attribute type to be expected
+ * @arg policy validation policy
+ */
+int nlmsg_validate(struct nlmsghdr *nlh, int hdrlen, int maxtype,
+ struct nla_policy *policy)
+{
+ if (!nlmsg_valid_hdr(nlh, hdrlen))
+ return -NLE_MSG_TOOSHORT;
+
+ return nla_validate(nlmsg_attrdata(nlh, hdrlen),
+ nlmsg_attrlen(nlh, hdrlen), maxtype, policy);
+}
+
+/** @} */
+
+/**
+ * @name Message Building/Access
+ * @{
+ */
+
+static struct nl_msg *__nlmsg_alloc(size_t len)
+{
+ struct nl_msg *nm;
+
+ nm = calloc(1, sizeof(*nm));
+ if (!nm)
+ goto errout;
+
+ nm->nm_refcnt = 1;
+
+ nm->nm_nlh = malloc(len);
+ if (!nm->nm_nlh)
+ goto errout;
+
+ memset(nm->nm_nlh, 0, sizeof(struct nlmsghdr));
+
+ nm->nm_protocol = -1;
+ nm->nm_size = len;
+ nm->nm_nlh->nlmsg_len = nlmsg_total_size(0);
+
+ NL_DBG(2, "msg %p: Allocated new message, maxlen=%zu\n", nm, len);
+
+ return nm;
+errout:
+ free(nm);
+ return NULL;
+}
+
+/**
+ * Allocate a new netlink message with the default maximum payload size.
+ *
+ * Allocates a new netlink message without any further payload. The
+ * maximum payload size defaults to PAGESIZE or as otherwise specified
+ * with nlmsg_set_default_size().
+ *
+ * @return Newly allocated netlink message or NULL.
+ */
+struct nl_msg *nlmsg_alloc(void)
+{
+ return __nlmsg_alloc(default_msg_size);
+}
+
+/**
+ * Allocate a new netlink message with maximum payload size specified.
+ */
+struct nl_msg *nlmsg_alloc_size(size_t max)
+{
+ return __nlmsg_alloc(max);
+}
+
+/**
+ * Allocate a new netlink message and inherit netlink message header
+ * @arg hdr Netlink message header template
+ *
+ * Allocates a new netlink message and inherits the original message
+ * header. If \a hdr is not NULL it will be used as a template for
+ * the netlink message header, otherwise the header is left blank.
+ *
+ * @return Newly allocated netlink message or NULL
+ */
+struct nl_msg *nlmsg_inherit(struct nlmsghdr *hdr)
+{
+ struct nl_msg *nm;
+
+ nm = nlmsg_alloc();
+ if (nm && hdr) {
+ struct nlmsghdr *new = nm->nm_nlh;
+
+ new->nlmsg_type = hdr->nlmsg_type;
+ new->nlmsg_flags = hdr->nlmsg_flags;
+ new->nlmsg_seq = hdr->nlmsg_seq;
+ new->nlmsg_pid = hdr->nlmsg_pid;
+ }
+
+ return nm;
+}
+
+/**
+ * Allocate a new netlink message
+ * @arg nlmsgtype Netlink message type
+ * @arg flags Message flags.
+ *
+ * @return Newly allocated netlink message or NULL.
+ */
+struct nl_msg *nlmsg_alloc_simple(int nlmsgtype, int flags)
+{
+ struct nl_msg *msg;
+ struct nlmsghdr nlh = {
+ .nlmsg_type = nlmsgtype,
+ .nlmsg_flags = flags,
+ };
+
+ msg = nlmsg_inherit(&nlh);
+ if (msg)
+ NL_DBG(2, "msg %p: Allocated new simple message\n", msg);
+
+ return msg;
+}
+
+/**
+ * Set the default maximum message payload size for allocated messages
+ * @arg max Size of payload in bytes.
+ */
+void nlmsg_set_default_size(size_t max)
+{
+ if (max < nlmsg_total_size(0))
+ max = nlmsg_total_size(0);
+
+ default_msg_size = max;
+}
+
+/**
+ * Convert a netlink message received from a netlink socket to a nl_msg
+ * @arg hdr Netlink message received from netlink socket.
+ *
+ * Allocates a new netlink message and copies all of the data pointed to
+ * by \a hdr into the new message object.
+ *
+ * @return Newly allocated netlink message or NULL.
+ */
+struct nl_msg *nlmsg_convert(struct nlmsghdr *hdr)
+{
+ struct nl_msg *nm;
+
+ nm = __nlmsg_alloc(NLMSG_ALIGN(hdr->nlmsg_len));
+ if (!nm)
+ goto errout;
+
+ memcpy(nm->nm_nlh, hdr, hdr->nlmsg_len);
+
+ return nm;
+errout:
+ nlmsg_free(nm);
+ return NULL;
+}
+
+/**
+ * Reserve room for additional data in a netlink message
+ * @arg n netlink message
+ * @arg len length of additional data to reserve room for
+ * @arg pad number of bytes to align data to
+ *
+ * Reserves room for additional data at the tail of the an
+ * existing netlink message. Eventual padding required will
+ * be zeroed out.
+ *
+ * @return Pointer to start of additional data tailroom or NULL.
+ */
+void *nlmsg_reserve(struct nl_msg *n, size_t len, int pad)
+{
+ void *buf = n->nm_nlh;
+ size_t nlmsg_len = n->nm_nlh->nlmsg_len;
+ size_t tlen;
+
+ tlen = pad ? ((len + (pad - 1)) & ~(pad - 1)) : len;
+
+ if ((tlen + nlmsg_len) > n->nm_size)
+ return NULL;
+
+ buf += nlmsg_len;
+ n->nm_nlh->nlmsg_len += tlen;
+
+ if (tlen > len)
+ memset(buf + len, 0, tlen - len);
+
+ NL_DBG(2, "msg %p: Reserved %zu bytes, pad=%d, nlmsg_len=%d\n",
+ n, len, pad, n->nm_nlh->nlmsg_len);
+
+ return buf;
+}
+
+/**
+ * Append data to tail of a netlink message
+ * @arg n netlink message
+ * @arg data data to add
+ * @arg len length of data
+ * @arg pad Number of bytes to align data to.
+ *
+ * Extends the netlink message as needed and appends the data of given
+ * length to the message.
+ *
+ * @return 0 on success or a negative error code
+ */
+int nlmsg_append(struct nl_msg *n, void *data, size_t len, int pad)
+{
+ void *tmp;
+
+ tmp = nlmsg_reserve(n, len, pad);
+ if (tmp == NULL)
+ return -NLE_NOMEM;
+
+ memcpy(tmp, data, len);
+ NL_DBG(2, "msg %p: Appended %zu bytes with padding %d\n", n, len, pad);
+
+ return 0;
+}
+
+/**
+ * Add a netlink message header to a netlink message
+ * @arg n netlink message
+ * @arg pid netlink process id or NL_AUTO_PID
+ * @arg seq sequence number of message or NL_AUTO_SEQ
+ * @arg type message type
+ * @arg payload length of message payload
+ * @arg flags message flags
+ *
+ * Adds or overwrites the netlink message header in an existing message
+ * object. If \a payload is greater-than zero additional room will be
+ * reserved, f.e. for family specific headers. It can be accesed via
+ * nlmsg_data().
+ *
+ * @return A pointer to the netlink message header or NULL.
+ */
+struct nlmsghdr *nlmsg_put(struct nl_msg *n, uint32_t pid, uint32_t seq,
+ int type, int payload, int flags)
+{
+ struct nlmsghdr *nlh;
+
+ if (n->nm_nlh->nlmsg_len < NLMSG_HDRLEN)
+ BUG();
+
+ nlh = (struct nlmsghdr *) n->nm_nlh;
+ nlh->nlmsg_type = type;
+ nlh->nlmsg_flags = flags;
+ nlh->nlmsg_pid = pid;
+ nlh->nlmsg_seq = seq;
+
+ NL_DBG(2, "msg %p: Added netlink header type=%d, flags=%d, pid=%d, "
+ "seq=%d\n", n, type, flags, pid, seq);
+
+ if (payload > 0 &&
+ nlmsg_reserve(n, payload, NLMSG_ALIGNTO) == NULL)
+ return NULL;
+
+ return nlh;
+}
+
+/**
+ * Release a reference from an netlink message
+ * @arg msg message to release reference from
+ *
+ * Frees memory after the last reference has been released.
+ */
+void nlmsg_free(struct nl_msg *msg)
+{
+ if (!msg)
+ return;
+
+ msg->nm_refcnt--;
+ NL_DBG(4, "Returned message reference %p, %d remaining\n",
+ msg, msg->nm_refcnt);
+
+ if (msg->nm_refcnt < 0)
+ BUG();
+
+ if (msg->nm_refcnt <= 0) {
+ free(msg->nm_nlh);
+ free(msg);
+ NL_DBG(2, "msg %p: Freed\n", msg);
+ }
+}
+
+/** @} */
+
+/**
+ * @name Direct Parsing
+ * @{
+ */
+
+/** @cond SKIP */
+struct dp_xdata {
+ void (*cb)(struct nl_object *, void *);
+ void *arg;
+};
+/** @endcond */
+
+static int parse_cb(struct nl_object *obj, struct nl_parser_param *p)
+{
+ struct dp_xdata *x = p->pp_arg;
+
+ x->cb(obj, x->arg);
+ return 0;
+}
+
+int nl_msg_parse(struct nl_msg *msg, void (*cb)(struct nl_object *, void *),
+ void *arg)
+{
+ struct nl_cache_ops *ops;
+ struct nl_parser_param p = {
+ .pp_cb = parse_cb
+ };
+ struct dp_xdata x = {
+ .cb = cb,
+ .arg = arg,
+ };
+
+ ops = nl_cache_ops_associate(nlmsg_get_proto(msg),
+ nlmsg_hdr(msg)->nlmsg_type);
+ if (ops == NULL)
+ return -NLE_MSGTYPE_NOSUPPORT;
+ p.pp_arg = &x;
+
+ return nl_cache_parse(ops, NULL, nlmsg_hdr(msg), &p);
+}
+
+/** @} */
--- /dev/null
+/*
+ * lib/nl.c Core Netlink Interface
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation version 2.1
+ * of the License.
+ *
+ * Copyright (c) 2003-2008 Thomas Graf <tgraf@suug.ch>
+ */
+
+/**
+ * @defgroup core Core
+ *
+ * @details
+ * @par 1) Connecting the socket
+ * @code
+ * // Bind and connect the socket to a protocol, NETLINK_ROUTE in this example.
+ * nl_connect(sk, NETLINK_ROUTE);
+ * @endcode
+ *
+ * @par 2) Sending data
+ * @code
+ * // The most rudimentary method is to use nl_sendto() simply pushing
+ * // a piece of data to the other netlink peer. This method is not
+ * // recommended.
+ * const char buf[] = { 0x01, 0x02, 0x03, 0x04 };
+ * nl_sendto(sk, buf, sizeof(buf));
+ *
+ * // A more comfortable interface is nl_send() taking a pointer to
+ * // a netlink message.
+ * struct nl_msg *msg = my_msg_builder();
+ * nl_send(sk, nlmsg_hdr(msg));
+ *
+ * // nl_sendmsg() provides additional control over the sendmsg() message
+ * // header in order to allow more specific addressing of multiple peers etc.
+ * struct msghdr hdr = { ... };
+ * nl_sendmsg(sk, nlmsg_hdr(msg), &hdr);
+ *
+ * // You're probably too lazy to fill out the netlink pid, sequence number
+ * // and message flags all the time. nl_send_auto_complete() automatically
+ * // extends your message header as needed with an appropriate sequence
+ * // number, the netlink pid stored in the netlink socket and the message
+ * // flags NLM_F_REQUEST and NLM_F_ACK (if not disabled in the socket)
+ * nl_send_auto_complete(sk, nlmsg_hdr(msg));
+ *
+ * // Simple protocols don't require the complex message construction interface
+ * // and may favour nl_send_simple() to easly send a bunch of payload
+ * // encapsulated in a netlink message header.
+ * nl_send_simple(sk, MY_MSG_TYPE, 0, buf, sizeof(buf));
+ * @endcode
+ *
+ * @par 3) Receiving data
+ * @code
+ * // nl_recv() receives a single message allocating a buffer for the message
+ * // content and gives back the pointer to you.
+ * struct sockaddr_nl peer;
+ * unsigned char *msg;
+ * nl_recv(sk, &peer, &msg);
+ *
+ * // nl_recvmsgs() receives a bunch of messages until the callback system
+ * // orders it to state, usually after receving a compolete multi part
+ * // message series.
+ * nl_recvmsgs(sk, my_callback_configuration);
+ *
+ * // nl_recvmsgs_default() acts just like nl_recvmsg() but uses the callback
+ * // configuration stored in the socket.
+ * nl_recvmsgs_default(sk);
+ *
+ * // In case you want to wait for the ACK to be recieved that you requested
+ * // with your latest message, you can call nl_wait_for_ack()
+ * nl_wait_for_ack(sk);
+ * @endcode
+ *
+ * @par 4) Closing
+ * @code
+ * // Close the socket first to release kernel memory
+ * nl_close(sk);
+ * @endcode
+ *
+ * @{
+ */
+
+#include <netlink-local.h>
+#include <netlink/netlink.h>
+#include <netlink/utils.h>
+#include <netlink/handlers.h>
+#include <netlink/msg.h>
+#include <netlink/attr.h>
+
+/**
+ * @name Connection Management
+ * @{
+ */
+
+/**
+ * Create and connect netlink socket.
+ * @arg sk Netlink socket.
+ * @arg protocol Netlink protocol to use.
+ *
+ * Creates a netlink socket using the specified protocol, binds the socket
+ * and issues a connection attempt.
+ *
+ * @return 0 on success or a negative error code.
+ */
+int nl_connect(struct nl_sock *sk, int protocol)
+{
+ int err;
+ socklen_t addrlen;
+
+ sk->s_fd = socket(AF_NETLINK, SOCK_RAW, protocol);
+ if (sk->s_fd < 0) {
+ err = -nl_syserr2nlerr(errno);
+ goto errout;
+ }
+
+ if (!(sk->s_flags & NL_SOCK_BUFSIZE_SET)) {
+ err = nl_socket_set_buffer_size(sk, 0, 0);
+ if (err < 0)
+ goto errout;
+ }
+
+ err = bind(sk->s_fd, (struct sockaddr*) &sk->s_local,
+ sizeof(sk->s_local));
+ if (err < 0) {
+ err = -nl_syserr2nlerr(errno);
+ goto errout;
+ }
+
+ addrlen = sizeof(sk->s_local);
+ err = getsockname(sk->s_fd, (struct sockaddr *) &sk->s_local,
+ &addrlen);
+ if (err < 0) {
+ err = -nl_syserr2nlerr(errno);
+ goto errout;
+ }
+
+ if (addrlen != sizeof(sk->s_local)) {
+ err = -NLE_NOADDR;
+ goto errout;
+ }
+
+ if (sk->s_local.nl_family != AF_NETLINK) {
+ err = -NLE_AF_NOSUPPORT;
+ goto errout;
+ }
+
+ sk->s_proto = protocol;
+
+ return 0;
+errout:
+ close(sk->s_fd);
+ sk->s_fd = -1;
+
+ return err;
+}
+
+/**
+ * Close/Disconnect netlink socket.
+ * @arg sk Netlink socket.
+ */
+void nl_close(struct nl_sock *sk)
+{
+ if (sk->s_fd >= 0) {
+ close(sk->s_fd);
+ sk->s_fd = -1;
+ }
+
+ sk->s_proto = 0;
+}
+
+/** @} */
+
+/**
+ * @name Send
+ * @{
+ */
+
+/**
+ * Send raw data over netlink socket.
+ * @arg sk Netlink socket.
+ * @arg buf Data buffer.
+ * @arg size Size of data buffer.
+ * @return Number of characters written on success or a negative error code.
+ */
+int nl_sendto(struct nl_sock *sk, void *buf, size_t size)
+{
+ int ret;
+
+ ret = sendto(sk->s_fd, buf, size, 0, (struct sockaddr *)
+ &sk->s_peer, sizeof(sk->s_peer));
+ if (ret < 0)
+ return -nl_syserr2nlerr(errno);
+
+ return ret;
+}
+
+/**
+ * Send netlink message with control over sendmsg() message header.
+ * @arg sk Netlink socket.
+ * @arg msg Netlink message to be sent.
+ * @arg hdr Sendmsg() message header.
+ * @return Number of characters sent on sucess or a negative error code.
+ */
+int nl_sendmsg(struct nl_sock *sk, struct nl_msg *msg, struct msghdr *hdr)
+{
+ struct nl_cb *cb;
+ int ret;
+
+ struct iovec iov = {
+ .iov_base = (void *) nlmsg_hdr(msg),
+ .iov_len = nlmsg_hdr(msg)->nlmsg_len,
+ };
+
+ hdr->msg_iov = &iov;
+ hdr->msg_iovlen = 1;
+
+ nlmsg_set_src(msg, &sk->s_local);
+
+ cb = sk->s_cb;
+ if (cb->cb_set[NL_CB_MSG_OUT])
+ if (nl_cb_call(cb, NL_CB_MSG_OUT, msg) != NL_OK)
+ return 0;
+
+ ret = sendmsg(sk->s_fd, hdr, 0);
+ if (ret < 0)
+ return -nl_syserr2nlerr(errno);
+
+ return ret;
+}
+
+
+/**
+ * Send netlink message.
+ * @arg sk Netlink socket.
+ * @arg msg Netlink message to be sent.
+ * @see nl_sendmsg()
+ * @return Number of characters sent on success or a negative error code.
+ */
+int nl_send(struct nl_sock *sk, struct nl_msg *msg)
+{
+ struct sockaddr_nl *dst;
+ struct ucred *creds;
+
+ struct msghdr hdr = {
+ .msg_name = (void *) &sk->s_peer,
+ .msg_namelen = sizeof(struct sockaddr_nl),
+ };
+
+ /* Overwrite destination if specified in the message itself, defaults
+ * to the peer address of the socket.
+ */
+ dst = nlmsg_get_dst(msg);
+ if (dst->nl_family == AF_NETLINK)
+ hdr.msg_name = dst;
+
+ /* Add credentials if present. */
+ creds = nlmsg_get_creds(msg);
+ if (creds != NULL) {
+ char buf[CMSG_SPACE(sizeof(struct ucred))];
+ struct cmsghdr *cmsg;
+
+ hdr.msg_control = buf;
+ hdr.msg_controllen = sizeof(buf);
+
+ cmsg = CMSG_FIRSTHDR(&hdr);
+ cmsg->cmsg_level = SOL_SOCKET;
+ cmsg->cmsg_type = SCM_CREDENTIALS;
+ cmsg->cmsg_len = CMSG_LEN(sizeof(struct ucred));
+ memcpy(CMSG_DATA(cmsg), creds, sizeof(struct ucred));
+ }
+
+ return nl_sendmsg(sk, msg, &hdr);
+}
+
+/**
+ * Send netlink message and check & extend header values as needed.
+ * @arg sk Netlink socket.
+ * @arg msg Netlink message to be sent.
+ *
+ * Checks the netlink message \c nlh for completness and extends it
+ * as required before sending it out. Checked fields include pid,
+ * sequence nr, and flags.
+ *
+ * @see nl_send()
+ * @return Number of characters sent or a negative error code.
+ */
+int nl_send_auto_complete(struct nl_sock *sk, struct nl_msg *msg)
+{
+ struct nlmsghdr *nlh;
+ struct nl_cb *cb = sk->s_cb;
+
+ nlh = nlmsg_hdr(msg);
+ if (nlh->nlmsg_pid == 0)
+ nlh->nlmsg_pid = sk->s_local.nl_pid;
+
+ if (nlh->nlmsg_seq == 0)
+ nlh->nlmsg_seq = sk->s_seq_next++;
+
+ if (msg->nm_protocol == -1)
+ msg->nm_protocol = sk->s_proto;
+
+ nlh->nlmsg_flags |= NLM_F_REQUEST;
+
+ if (!(sk->s_flags & NL_NO_AUTO_ACK))
+ nlh->nlmsg_flags |= NLM_F_ACK;
+
+ if (cb->cb_send_ow)
+ return cb->cb_send_ow(sk, msg);
+ else
+ return nl_send(sk, msg);
+}
+
+/**
+ * Send simple netlink message using nl_send_auto_complete()
+ * @arg sk Netlink socket.
+ * @arg type Netlink message type.
+ * @arg flags Netlink message flags.
+ * @arg buf Data buffer.
+ * @arg size Size of data buffer.
+ *
+ * Builds a netlink message with the specified type and flags and
+ * appends the specified data as payload to the message.
+ *
+ * @see nl_send_auto_complete()
+ * @return Number of characters sent on success or a negative error code.
+ */
+int nl_send_simple(struct nl_sock *sk, int type, int flags, void *buf,
+ size_t size)
+{
+ int err;
+ struct nl_msg *msg;
+
+ msg = nlmsg_alloc_simple(type, flags);
+ if (!msg)
+ return -NLE_NOMEM;
+
+ if (buf && size) {
+ err = nlmsg_append(msg, buf, size, NLMSG_ALIGNTO);
+ if (err < 0)
+ goto errout;
+ }
+
+
+ err = nl_send_auto_complete(sk, msg);
+errout:
+ nlmsg_free(msg);
+
+ return err;
+}
+
+/** @} */
+
+/**
+ * @name Receive
+ * @{
+ */
+
+/**
+ * Receive data from netlink socket
+ * @arg sk Netlink socket.
+ * @arg nla Destination pointer for peer's netlink address.
+ * @arg buf Destination pointer for message content.
+ * @arg creds Destination pointer for credentials.
+ *
+ * Receives a netlink message, allocates a buffer in \c *buf and
+ * stores the message content. The peer's netlink address is stored
+ * in \c *nla. The caller is responsible for freeing the buffer allocated
+ * in \c *buf if a positive value is returned. Interruped system calls
+ * are handled by repeating the read. The input buffer size is determined
+ * by peeking before the actual read is done.
+ *
+ * A non-blocking sockets causes the function to return immediately with
+ * a return value of 0 if no data is available.
+ *
+ * @return Number of octets read, 0 on EOF or a negative error code.
+ */
+int nl_recv(struct nl_sock *sk, struct sockaddr_nl *nla,
+ unsigned char **buf, struct ucred **creds)
+{
+ int n;
+ int flags = 0;
+ static int page_size = 0;
+ struct iovec iov;
+ struct msghdr msg = {
+ .msg_name = (void *) nla,
+ .msg_namelen = sizeof(struct sockaddr_nl),
+ .msg_iov = &iov,
+ .msg_iovlen = 1,
+ .msg_control = NULL,
+ .msg_controllen = 0,
+ .msg_flags = 0,
+ };
+ struct cmsghdr *cmsg;
+
+ if (sk->s_flags & NL_MSG_PEEK)
+ flags |= MSG_PEEK;
+
+ if (page_size == 0)
+ page_size = getpagesize();
+
+ iov.iov_len = page_size;
+ iov.iov_base = *buf = malloc(iov.iov_len);
+
+ if (sk->s_flags & NL_SOCK_PASSCRED) {
+ msg.msg_controllen = CMSG_SPACE(sizeof(struct ucred));
+ msg.msg_control = calloc(1, msg.msg_controllen);
+ }
+retry:
+
+ n = recvmsg(sk->s_fd, &msg, flags);
+ if (!n)
+ goto abort;
+ else if (n < 0) {
+ if (errno == EINTR) {
+ NL_DBG(3, "recvmsg() returned EINTR, retrying\n");
+ goto retry;
+ } else if (errno == EAGAIN) {
+ NL_DBG(3, "recvmsg() returned EAGAIN, aborting\n");
+ goto abort;
+ } else {
+ free(msg.msg_control);
+ free(*buf);
+ return -nl_syserr2nlerr(errno);
+ }
+ }
+
+ if (iov.iov_len < n ||
+ msg.msg_flags & MSG_TRUNC) {
+ /* Provided buffer is not long enough, enlarge it
+ * and try again. */
+ iov.iov_len *= 2;
+ iov.iov_base = *buf = realloc(*buf, iov.iov_len);
+ goto retry;
+ } else if (msg.msg_flags & MSG_CTRUNC) {
+ msg.msg_controllen *= 2;
+ msg.msg_control = realloc(msg.msg_control, msg.msg_controllen);
+ goto retry;
+ } else if (flags != 0) {
+ /* Buffer is big enough, do the actual reading */
+ flags = 0;
+ goto retry;
+ }
+
+ if (msg.msg_namelen != sizeof(struct sockaddr_nl)) {
+ free(msg.msg_control);
+ free(*buf);
+ return -NLE_NOADDR;
+ }
+
+ for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg)) {
+ if (cmsg->cmsg_level == SOL_SOCKET &&
+ cmsg->cmsg_type == SCM_CREDENTIALS) {
+ *creds = calloc(1, sizeof(struct ucred));
+ memcpy(*creds, CMSG_DATA(cmsg), sizeof(struct ucred));
+ break;
+ }
+ }
+
+ free(msg.msg_control);
+ return n;
+
+abort:
+ free(msg.msg_control);
+ free(*buf);
+ return 0;
+}
+
+#define NL_CB_CALL(cb, type, msg) \
+do { \
+ err = nl_cb_call(cb, type, msg); \
+ switch (err) { \
+ case NL_OK: \
+ err = 0; \
+ break; \
+ case NL_SKIP: \
+ goto skip; \
+ case NL_STOP: \
+ goto stop; \
+ default: \
+ goto out; \
+ } \
+} while (0)
+
+static int recvmsgs(struct nl_sock *sk, struct nl_cb *cb)
+{
+ int n, err = 0, multipart = 0;
+ unsigned char *buf = NULL;
+ struct nlmsghdr *hdr;
+ struct sockaddr_nl nla = {0};
+ struct nl_msg *msg = NULL;
+ struct ucred *creds = NULL;
+
+continue_reading:
+ NL_DBG(3, "Attempting to read from %p\n", sk);
+ if (cb->cb_recv_ow)
+ n = cb->cb_recv_ow(sk, &nla, &buf, &creds);
+ else
+ n = nl_recv(sk, &nla, &buf, &creds);
+
+ if (n <= 0)
+ return n;
+
+ NL_DBG(3, "recvmsgs(%p): Read %d bytes\n", sk, n);
+
+ hdr = (struct nlmsghdr *) buf;
+ while (nlmsg_ok(hdr, n)) {
+ NL_DBG(3, "recgmsgs(%p): Processing valid message...\n", sk);
+
+ nlmsg_free(msg);
+ msg = nlmsg_convert(hdr);
+ if (!msg) {
+ err = -NLE_NOMEM;
+ goto out;
+ }
+
+ nlmsg_set_proto(msg, sk->s_proto);
+ nlmsg_set_src(msg, &nla);
+ if (creds)
+ nlmsg_set_creds(msg, creds);
+
+ /* Raw callback is the first, it gives the most control
+ * to the user and he can do his very own parsing. */
+ if (cb->cb_set[NL_CB_MSG_IN])
+ NL_CB_CALL(cb, NL_CB_MSG_IN, msg);
+
+ /* Sequence number checking. The check may be done by
+ * the user, otherwise a very simple check is applied
+ * enforcing strict ordering */
+ if (cb->cb_set[NL_CB_SEQ_CHECK])
+ NL_CB_CALL(cb, NL_CB_SEQ_CHECK, msg);
+ else if (hdr->nlmsg_seq != sk->s_seq_expect) {
+ if (cb->cb_set[NL_CB_INVALID])
+ NL_CB_CALL(cb, NL_CB_INVALID, msg);
+ else {
+ err = -NLE_SEQ_MISMATCH;
+ goto out;
+ }
+ }
+
+ if (hdr->nlmsg_type == NLMSG_DONE ||
+ hdr->nlmsg_type == NLMSG_ERROR ||
+ hdr->nlmsg_type == NLMSG_NOOP ||
+ hdr->nlmsg_type == NLMSG_OVERRUN) {
+ /* We can't check for !NLM_F_MULTI since some netlink
+ * users in the kernel are broken. */
+ sk->s_seq_expect++;
+ NL_DBG(3, "recvmsgs(%p): Increased expected " \
+ "sequence number to %d\n",
+ sk, sk->s_seq_expect);
+ }
+
+ if (hdr->nlmsg_flags & NLM_F_MULTI)
+ multipart = 1;
+
+ /* Other side wishes to see an ack for this message */
+ if (hdr->nlmsg_flags & NLM_F_ACK) {
+ if (cb->cb_set[NL_CB_SEND_ACK])
+ NL_CB_CALL(cb, NL_CB_SEND_ACK, msg);
+ else {
+ /* FIXME: implement */
+ }
+ }
+
+ /* messages terminates a multpart message, this is
+ * usually the end of a message and therefore we slip
+ * out of the loop by default. the user may overrule
+ * this action by skipping this packet. */
+ if (hdr->nlmsg_type == NLMSG_DONE) {
+ multipart = 0;
+ if (cb->cb_set[NL_CB_FINISH])
+ NL_CB_CALL(cb, NL_CB_FINISH, msg);
+ }
+
+ /* Message to be ignored, the default action is to
+ * skip this message if no callback is specified. The
+ * user may overrule this action by returning
+ * NL_PROCEED. */
+ else if (hdr->nlmsg_type == NLMSG_NOOP) {
+ if (cb->cb_set[NL_CB_SKIPPED])
+ NL_CB_CALL(cb, NL_CB_SKIPPED, msg);
+ else
+ goto skip;
+ }
+
+ /* Data got lost, report back to user. The default action is to
+ * quit parsing. The user may overrule this action by retuning
+ * NL_SKIP or NL_PROCEED (dangerous) */
+ else if (hdr->nlmsg_type == NLMSG_OVERRUN) {
+ if (cb->cb_set[NL_CB_OVERRUN])
+ NL_CB_CALL(cb, NL_CB_OVERRUN, msg);
+ else {
+ err = -NLE_MSG_OVERFLOW;
+ goto out;
+ }
+ }
+
+ /* Message carries a nlmsgerr */
+ else if (hdr->nlmsg_type == NLMSG_ERROR) {
+ struct nlmsgerr *e = nlmsg_data(hdr);
+
+ if (hdr->nlmsg_len < nlmsg_msg_size(sizeof(*e))) {
+ /* Truncated error message, the default action
+ * is to stop parsing. The user may overrule
+ * this action by returning NL_SKIP or
+ * NL_PROCEED (dangerous) */
+ if (cb->cb_set[NL_CB_INVALID])
+ NL_CB_CALL(cb, NL_CB_INVALID, msg);
+ else {
+ err = -NLE_MSG_TRUNC;
+ goto out;
+ }
+ } else if (e->error) {
+ /* Error message reported back from kernel. */
+ if (cb->cb_err) {
+ err = cb->cb_err(&nla, e,
+ cb->cb_err_arg);
+ if (err < 0)
+ goto out;
+ else if (err == NL_SKIP)
+ goto skip;
+ else if (err == NL_STOP) {
+ err = -nl_syserr2nlerr(e->error);
+ goto out;
+ }
+ } else {
+ err = -nl_syserr2nlerr(e->error);
+ goto out;
+ }
+ } else if (cb->cb_set[NL_CB_ACK])
+ NL_CB_CALL(cb, NL_CB_ACK, msg);
+ } else {
+ /* Valid message (not checking for MULTIPART bit to
+ * get along with broken kernels. NL_SKIP has no
+ * effect on this. */
+ if (cb->cb_set[NL_CB_VALID])
+ NL_CB_CALL(cb, NL_CB_VALID, msg);
+ }
+skip:
+ err = 0;
+ hdr = nlmsg_next(hdr, &n);
+ }
+
+ nlmsg_free(msg);
+ free(buf);
+ free(creds);
+ buf = NULL;
+ msg = NULL;
+ creds = NULL;
+
+ if (multipart) {
+ /* Multipart message not yet complete, continue reading */
+ goto continue_reading;
+ }
+stop:
+ err = 0;
+out:
+ nlmsg_free(msg);
+ free(buf);
+ free(creds);
+
+ return err;
+}
+
+/**
+ * Receive a set of messages from a netlink socket.
+ * @arg sk Netlink socket.
+ * @arg cb set of callbacks to control behaviour.
+ *
+ * Repeatedly calls nl_recv() or the respective replacement if provided
+ * by the application (see nl_cb_overwrite_recv()) and parses the
+ * received data as netlink messages. Stops reading if one of the
+ * callbacks returns NL_STOP or nl_recv returns either 0 or a negative error code.
+ *
+ * A non-blocking sockets causes the function to return immediately if
+ * no data is available.
+ *
+ * @return 0 on success or a negative error code from nl_recv().
+ */
+int nl_recvmsgs(struct nl_sock *sk, struct nl_cb *cb)
+{
+ if (cb->cb_recvmsgs_ow)
+ return cb->cb_recvmsgs_ow(sk, cb);
+ else
+ return recvmsgs(sk, cb);
+}
+
+
+static int ack_wait_handler(struct nl_msg *msg, void *arg)
+{
+ return NL_STOP;
+}
+
+/**
+ * Wait for ACK.
+ * @arg sk Netlink socket.
+ * @pre The netlink socket must be in blocking state.
+ *
+ * Waits until an ACK is received for the latest not yet acknowledged
+ * netlink message.
+ */
+int nl_wait_for_ack(struct nl_sock *sk)
+{
+ int err;
+ struct nl_cb *cb;
+
+ cb = nl_cb_clone(sk->s_cb);
+ if (cb == NULL)
+ return -NLE_NOMEM;
+
+ nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_wait_handler, NULL);
+ err = nl_recvmsgs(sk, cb);
+ nl_cb_put(cb);
+
+ return err;
+}
+
+/** @} */
+
+/** @} */
--- /dev/null
+/*
+ * lib/object.c Generic Cacheable Object
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation version 2.1
+ * of the License.
+ *
+ * Copyright (c) 2003-2008 Thomas Graf <tgraf@suug.ch>
+ */
+
+/**
+ * @ingroup cache
+ * @defgroup object Object
+ * @{
+ */
+
+#include <netlink-local.h>
+#include <netlink/netlink.h>
+#include <netlink/cache.h>
+#include <netlink/object.h>
+#include <netlink/utils.h>
+
+static inline struct nl_object_ops *obj_ops(struct nl_object *obj)
+{
+ if (!obj->ce_ops)
+ BUG();
+
+ return obj->ce_ops;
+}
+
+/**
+ * @name Object Creation/Deletion
+ * @{
+ */
+
+/**
+ * Allocate a new object of kind specified by the operations handle
+ * @arg ops cache operations handle
+ * @return The new object or NULL
+ */
+struct nl_object *nl_object_alloc(struct nl_object_ops *ops)
+{
+ struct nl_object *new;
+
+ if (ops->oo_size < sizeof(*new))
+ BUG();
+
+ new = calloc(1, ops->oo_size);
+ if (!new)
+ return NULL;
+
+ new->ce_refcnt = 1;
+ nl_init_list_head(&new->ce_list);
+
+ new->ce_ops = ops;
+ if (ops->oo_constructor)
+ ops->oo_constructor(new);
+
+ NL_DBG(4, "Allocated new object %p\n", new);
+
+ return new;
+}
+
+#ifdef disabled
+/**
+ * Allocate a new object of kind specified by the name
+ * @arg kind name of object type
+ * @return The new object or nULL
+ */
+int nl_object_alloc_name(const char *kind, struct nl_object **result)
+{
+ struct nl_cache_ops *ops;
+
+ ops = nl_cache_ops_lookup(kind);
+ if (!ops)
+ return -NLE_OPNOTSUPP;
+
+ if (!(*result = nl_object_alloc(ops->co_obj_ops)))
+ return -NLE_NOMEM;
+
+ return 0;
+}
+#endif
+
+struct nl_derived_object {
+ NLHDR_COMMON
+ char data;
+};
+
+/**
+ * Allocate a new object and copy all data from an existing object
+ * @arg obj object to inherite data from
+ * @return The new object or NULL.
+ */
+struct nl_object *nl_object_clone(struct nl_object *obj)
+{
+ struct nl_object *new;
+ struct nl_object_ops *ops = obj_ops(obj);
+ int doff = offsetof(struct nl_derived_object, data);
+ int size;
+
+ new = nl_object_alloc(ops);
+ if (!new)
+ return NULL;
+
+ size = ops->oo_size - doff;
+ if (size < 0)
+ BUG();
+
+ new->ce_ops = obj->ce_ops;
+ new->ce_msgtype = obj->ce_msgtype;
+
+ if (size)
+ memcpy((void *)new + doff, (void *)obj + doff, size);
+
+ if (ops->oo_clone) {
+ if (ops->oo_clone(new, obj) < 0) {
+ nl_object_free(new);
+ return NULL;
+ }
+ } else if (size && ops->oo_free_data)
+ BUG();
+
+ return new;
+}
+
+/**
+ * Free a cacheable object
+ * @arg obj object to free
+ *
+ * @return 0 or a negative error code.
+ */
+void nl_object_free(struct nl_object *obj)
+{
+ struct nl_object_ops *ops = obj_ops(obj);
+
+ if (obj->ce_refcnt > 0)
+ NL_DBG(1, "Warning: Freeing object in use...\n");
+
+ if (obj->ce_cache)
+ nl_cache_remove(obj);
+
+ if (ops->oo_free_data)
+ ops->oo_free_data(obj);
+
+ free(obj);
+
+ NL_DBG(4, "Freed object %p\n", obj);
+}
+
+/** @} */
+
+/**
+ * @name Reference Management
+ * @{
+ */
+
+/**
+ * Acquire a reference on a object
+ * @arg obj object to acquire reference from
+ */
+void nl_object_get(struct nl_object *obj)
+{
+ obj->ce_refcnt++;
+ NL_DBG(4, "New reference to object %p, total %d\n",
+ obj, obj->ce_refcnt);
+}
+
+/**
+ * Release a reference from an object
+ * @arg obj object to release reference from
+ */
+void nl_object_put(struct nl_object *obj)
+{
+ if (!obj)
+ return;
+
+ obj->ce_refcnt--;
+ NL_DBG(4, "Returned object reference %p, %d remaining\n",
+ obj, obj->ce_refcnt);
+
+ if (obj->ce_refcnt < 0)
+ BUG();
+
+ if (obj->ce_refcnt <= 0)
+ nl_object_free(obj);
+}
+
+/** @} */
+
+/**
+ * @name Utillities
+ * @{
+ */
+
+#ifdef disabled
+/**
+ * Dump this object according to the specified parameters
+ * @arg obj object to dump
+ * @arg params dumping parameters
+ */
+void nl_object_dump(struct nl_object *obj, struct nl_dump_params *params)
+{
+ dump_from_ops(obj, params);
+}
+
+/**
+ * Check if the identifiers of two objects are identical
+ * @arg a an object
+ * @arg b another object of same type
+ *
+ * @return true if both objects have equal identifiers, otherwise false.
+ */
+int nl_object_identical(struct nl_object *a, struct nl_object *b)
+{
+ struct nl_object_ops *ops = obj_ops(a);
+ int req_attrs;
+
+ /* Both objects must be of same type */
+ if (ops != obj_ops(b))
+ return 0;
+
+ req_attrs = ops->oo_id_attrs;
+
+ /* Both objects must provide all required attributes to uniquely
+ * identify an object */
+ if ((a->ce_mask & req_attrs) != req_attrs ||
+ (b->ce_mask & req_attrs) != req_attrs)
+ return 0;
+
+ /* Can't judge unless we can compare */
+ if (ops->oo_compare == NULL)
+ return 0;
+
+ return !(ops->oo_compare(a, b, req_attrs, 0));
+}
+#endif
+
+/**
+ * Compute bitmask representing difference in attribute values
+ * @arg a an object
+ * @arg b another object of same type
+ *
+ * The bitmask returned is specific to an object type, each bit set represents
+ * an attribute which mismatches in either of the two objects. Unavailability
+ * of an attribute in one object and presence in the other is regarded a
+ * mismatch as well.
+ *
+ * @return Bitmask describing differences or 0 if they are completely identical.
+ */
+uint32_t nl_object_diff(struct nl_object *a, struct nl_object *b)
+{
+ struct nl_object_ops *ops = obj_ops(a);
+
+ if (ops != obj_ops(b) || ops->oo_compare == NULL)
+ return UINT_MAX;
+
+ return ops->oo_compare(a, b, ~0, 0);
+}
+
+/**
+ * Match a filter against an object
+ * @arg obj object to check
+ * @arg filter object of same type acting as filter
+ *
+ * @return 1 if the object matches the filter or 0
+ * if no filter procedure is available or if the
+ * filter does not match.
+ */
+int nl_object_match_filter(struct nl_object *obj, struct nl_object *filter)
+{
+ struct nl_object_ops *ops = obj_ops(obj);
+
+ if (ops != obj_ops(filter) || ops->oo_compare == NULL)
+ return 0;
+
+ return !(ops->oo_compare(obj, filter, filter->ce_mask,
+ LOOSE_COMPARISON));
+}
+
+/**
+ * Convert bitmask of attributes to a character string
+ * @arg obj object of same type as attribute bitmask
+ * @arg attrs bitmask of attribute types
+ * @arg buf destination buffer
+ * @arg len length of destination buffer
+ *
+ * Converts the bitmask of attribute types into a list of attribute
+ * names separated by comas.
+ *
+ * @return destination buffer.
+ */
+char *nl_object_attrs2str(struct nl_object *obj, uint32_t attrs,
+ char *buf, size_t len)
+{
+ struct nl_object_ops *ops = obj_ops(obj);
+
+ if (ops->oo_attrs2str != NULL)
+ return ops->oo_attrs2str(attrs, buf, len);
+ else {
+ memset(buf, 0, len);
+ return buf;
+ }
+}
+
+/** @} */
+
+/** @} */
--- /dev/null
+/*
+ * lib/socket.c Netlink Socket
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation version 2.1
+ * of the License.
+ *
+ * Copyright (c) 2003-2008 Thomas Graf <tgraf@suug.ch>
+ */
+
+/**
+ * @ingroup core
+ * @defgroup socket Socket
+ * @{
+ */
+
+#include <netlink-local.h>
+#include <netlink/netlink.h>
+#include <netlink/utils.h>
+#include <netlink/handlers.h>
+#include <netlink/msg.h>
+#include <netlink/attr.h>
+
+static uint32_t used_ports_map[32];
+
+static uint32_t generate_local_port(void)
+{
+ int i, n;
+ uint32_t pid = getpid() & 0x3FFFFF;
+
+ for (i = 0; i < 32; i++) {
+ if (used_ports_map[i] == 0xFFFFFFFF)
+ continue;
+
+ for (n = 0; n < 32; n++) {
+ if (1UL & (used_ports_map[i] >> n))
+ continue;
+
+ used_ports_map[i] |= (1UL << n);
+ n += (i * 32);
+
+ /* PID_MAX_LIMIT is currently at 2^22, leaving 10 bit
+ * to, i.e. 1024 unique ports per application. */
+ return pid + (n << 22);
+
+ }
+ }
+
+ /* Out of sockets in our own PID namespace, what to do? FIXME */
+ return UINT_MAX;
+}
+
+static void release_local_port(uint32_t port)
+{
+ int nr;
+
+ if (port == UINT_MAX)
+ return;
+
+ nr = port >> 22;
+ used_ports_map[nr / 32] &= ~((nr % 32) + 1);
+}
+
+/**
+ * @name Allocation
+ * @{
+ */
+
+static struct nl_sock *__alloc_socket(struct nl_cb *cb)
+{
+ struct nl_sock *sk;
+
+ sk = calloc(1, sizeof(*sk));
+ if (!sk)
+ return NULL;
+
+ sk->s_fd = -1;
+ sk->s_cb = cb;
+ sk->s_local.nl_family = AF_NETLINK;
+ sk->s_peer.nl_family = AF_NETLINK;
+ sk->s_seq_expect = sk->s_seq_next = time(0);
+ sk->s_local.nl_pid = generate_local_port();
+ if (sk->s_local.nl_pid == UINT_MAX) {
+ nl_socket_free(sk);
+ return NULL;
+ }
+
+ return sk;
+}
+
+/**
+ * Allocate new netlink socket
+ *
+ * @return Newly allocated netlink socket or NULL.
+ */
+struct nl_sock *nl_socket_alloc(void)
+{
+ struct nl_cb *cb;
+
+ cb = nl_cb_alloc(NL_CB_DEFAULT);
+ if (!cb)
+ return NULL;
+
+ return __alloc_socket(cb);
+}
+
+/**
+ * Allocate new socket with custom callbacks
+ * @arg cb Callback handler
+ *
+ * The reference to the callback handler is taken into account
+ * automatically, it is released again upon calling nl_socket_free().
+ *
+ *@return Newly allocted socket handle or NULL.
+ */
+struct nl_sock *nl_socket_alloc_cb(struct nl_cb *cb)
+{
+ if (cb == NULL)
+ BUG();
+
+ return __alloc_socket(nl_cb_get(cb));
+}
+
+/**
+ * Free a netlink socket.
+ * @arg sk Netlink socket.
+ */
+void nl_socket_free(struct nl_sock *sk)
+{
+ if (!sk)
+ return;
+
+ if (sk->s_fd >= 0)
+ close(sk->s_fd);
+
+ if (!(sk->s_flags & NL_OWN_PORT))
+ release_local_port(sk->s_local.nl_pid);
+
+ nl_cb_put(sk->s_cb);
+ free(sk);
+}
+
+/** @} */
+
+/**
+ * @name Sequence Numbers
+ * @{
+ */
+
+static int noop_seq_check(struct nl_msg *msg, void *arg)
+{
+ return NL_OK;
+}
+
+
+/**
+ * Disable sequence number checking.
+ * @arg sk Netlink socket.
+ *
+ * Disables checking of sequence numbers on the netlink socket This is
+ * required to allow messages to be processed which were not requested by
+ * a preceding request message, e.g. netlink events.
+ *
+ * @note This function modifies the NL_CB_SEQ_CHECK configuration in
+ * the callback handle associated with the socket.
+ */
+void nl_socket_disable_seq_check(struct nl_sock *sk)
+{
+ nl_cb_set(sk->s_cb, NL_CB_SEQ_CHECK,
+ NL_CB_CUSTOM, noop_seq_check, NULL);
+}
+
+/** @} */
+
+/**
+ * Set local port of socket
+ * @arg sk Netlink socket.
+ * @arg port Local port identifier
+ *
+ * Assigns a local port identifier to the socket. If port is 0
+ * a unique port identifier will be generated automatically.
+ */
+void nl_socket_set_local_port(struct nl_sock *sk, uint32_t port)
+{
+ if (port == 0) {
+ port = generate_local_port();
+ sk->s_flags &= ~NL_OWN_PORT;
+ } else {
+ if (!(sk->s_flags & NL_OWN_PORT))
+ release_local_port(sk->s_local.nl_pid);
+ sk->s_flags |= NL_OWN_PORT;
+ }
+
+ sk->s_local.nl_pid = port;
+}
+
+/** @} */
+
+/**
+ * @name Group Subscriptions
+ * @{
+ */
+
+/**
+ * Join groups
+ * @arg sk Netlink socket
+ * @arg group Group identifier
+ *
+ * Joins the specified groups using the modern socket option which
+ * is available since kernel version 2.6.14. It allows joining an
+ * almost arbitary number of groups without limitation. The list
+ * of groups has to be terminated by 0 (%NFNLGRP_NONE).
+ *
+ * Make sure to use the correct group definitions as the older
+ * bitmask definitions for nl_join_groups() are likely to still
+ * be present for backward compatibility reasons.
+ *
+ * @return 0 on sucess or a negative error code.
+ */
+int nl_socket_add_memberships(struct nl_sock *sk, int group, ...)
+{
+ int err;
+ va_list ap;
+
+ if (sk->s_fd == -1)
+ return -NLE_BAD_SOCK;
+
+ va_start(ap, group);
+
+ while (group != 0) {
+ if (group < 0)
+ return -NLE_INVAL;
+
+ err = setsockopt(sk->s_fd, SOL_NETLINK, NETLINK_ADD_MEMBERSHIP,
+ &group, sizeof(group));
+ if (err < 0)
+ return -nl_syserr2nlerr(errno);
+
+ group = va_arg(ap, int);
+ }
+
+ va_end(ap);
+
+ return 0;
+}
+
+/**
+ * Leave groups
+ * @arg sk Netlink socket
+ * @arg group Group identifier
+ *
+ * Leaves the specified groups using the modern socket option
+ * which is available since kernel version 2.6.14. The list of groups
+ * has to terminated by 0 (%NFNLGRP_NONE).
+ *
+ * @see nl_socket_add_membership
+ * @return 0 on success or a negative error code.
+ */
+int nl_socket_drop_memberships(struct nl_sock *sk, int group, ...)
+{
+ int err;
+ va_list ap;
+
+ if (sk->s_fd == -1)
+ return -NLE_BAD_SOCK;
+
+ va_start(ap, group);
+
+ while (group != 0) {
+ if (group < 0)
+ return -NLE_INVAL;
+
+ err = setsockopt(sk->s_fd, SOL_NETLINK, NETLINK_DROP_MEMBERSHIP,
+ &group, sizeof(group));
+ if (err < 0)
+ return -nl_syserr2nlerr(errno);
+
+ group = va_arg(ap, int);
+ }
+
+ va_end(ap);
+
+ return 0;
+}
+
+
+/** @} */
+
+/**
+ * Set file descriptor of socket to non-blocking state
+ * @arg sk Netlink socket.
+ *
+ * @return 0 on success or a negative error code.
+ */
+int nl_socket_set_nonblocking(struct nl_sock *sk)
+{
+ if (sk->s_fd == -1)
+ return -NLE_BAD_SOCK;
+
+ if (fcntl(sk->s_fd, F_SETFL, O_NONBLOCK) < 0)
+ return -nl_syserr2nlerr(errno);
+
+ return 0;
+}
+
+/** @} */
+
+/**
+ * @name Utilities
+ * @{
+ */
+
+/**
+ * Set socket buffer size of netlink socket.
+ * @arg sk Netlink socket.
+ * @arg rxbuf New receive socket buffer size in bytes.
+ * @arg txbuf New transmit socket buffer size in bytes.
+ *
+ * Sets the socket buffer size of a netlink socket to the specified
+ * values \c rxbuf and \c txbuf. Providing a value of \c 0 assumes a
+ * good default value.
+ *
+ * @note It is not required to call this function prior to nl_connect().
+ * @return 0 on sucess or a negative error code.
+ */
+int nl_socket_set_buffer_size(struct nl_sock *sk, int rxbuf, int txbuf)
+{
+ int err;
+
+ if (rxbuf <= 0)
+ rxbuf = 32768;
+
+ if (txbuf <= 0)
+ txbuf = 32768;
+
+ if (sk->s_fd == -1)
+ return -NLE_BAD_SOCK;
+
+ err = setsockopt(sk->s_fd, SOL_SOCKET, SO_SNDBUF,
+ &txbuf, sizeof(txbuf));
+ if (err < 0)
+ return -nl_syserr2nlerr(errno);
+
+ err = setsockopt(sk->s_fd, SOL_SOCKET, SO_RCVBUF,
+ &rxbuf, sizeof(rxbuf));
+ if (err < 0)
+ return -nl_syserr2nlerr(errno);
+
+ sk->s_flags |= NL_SOCK_BUFSIZE_SET;
+
+ return 0;
+}
+
+/**
+ * Enable/disable credential passing on netlink socket.
+ * @arg sk Netlink socket.
+ * @arg state New state (0 - disabled, 1 - enabled)
+ *
+ * @return 0 on success or a negative error code
+ */
+int nl_socket_set_passcred(struct nl_sock *sk, int state)
+{
+ int err;
+
+ if (sk->s_fd == -1)
+ return -NLE_BAD_SOCK;
+
+ err = setsockopt(sk->s_fd, SOL_SOCKET, SO_PASSCRED,
+ &state, sizeof(state));
+ if (err < 0)
+ return -nl_syserr2nlerr(errno);
+
+ if (state)
+ sk->s_flags |= NL_SOCK_PASSCRED;
+ else
+ sk->s_flags &= ~NL_SOCK_PASSCRED;
+
+ return 0;
+}
+
+/**
+ * Enable/disable receival of additional packet information
+ * @arg sk Netlink socket.
+ * @arg state New state (0 - disabled, 1 - enabled)
+ *
+ * @return 0 on success or a negative error code
+ */
+int nl_socket_recv_pktinfo(struct nl_sock *sk, int state)
+{
+ int err;
+
+ if (sk->s_fd == -1)
+ return -NLE_BAD_SOCK;
+
+ err = setsockopt(sk->s_fd, SOL_NETLINK, NETLINK_PKTINFO,
+ &state, sizeof(state));
+ if (err < 0)
+ return -nl_syserr2nlerr(errno);
+
+ return 0;
+}
+
+/** @} */
+
+/** @} */
CATEGORY:=Libraries
TITLE:=netlink socket library
URL:=http://people.suug.ch/~tgr/libnl/
+ DEPENDS:=@!LINUX_2_4
endef
define Package/libnl/description
config MADWIFI_STABLE
bool "Use the OpenWrt stable version of madwifi"
-config MADWIFI_UPSTREAM
- depends BROKEN
- depends !LINUX_2_6_26
- depends !TARGET_atheros
- bool "Use the upstream release version 0.9.4"
-
endchoice
choice
# This is free software, licensed under the GNU General Public License v2.
# See /LICENSE for more information.
#
-# $Id$
include $(TOPDIR)/rules.mk
include $(INCLUDE_DIR)/kernel.mk
PKG_NAME:=madwifi
-ifneq ($(CONFIG_MADWIFI_UPSTREAM),)
- PKG_VERSION:=0.9.4
- PKG_RELEASE:=2.1
+PKG_REV:=3314
+PKG_VERSION:=r$(PKG_REV)
+PKG_RELEASE:=2
- PKG_SOURCE:=madwifi-$(PKG_VERSION).tar.gz
- PKG_SOURCE_URL:=http://downloads.sourceforge.net/madwifi/
- PKG_MD5SUM:=399d20de8d855a59f20058857c2178ad
+PKG_SOURCE_PROTO:=svn
+PKG_SOURCE_VERSION:=$(PKG_REV)
+PKG_SOURCE_SUBDIR:=$(if $(PKG_BRANCH),$(PKG_BRANCH),madwifi-trunk)-$(PKG_VERSION)
+PKG_SOURCE_URL:=http://svn.madwifi.org/madwifi/$(if $(PKG_BRANCH),branches/$(PKG_BRANCH),trunk)
+PKG_SOURCE:=$(PKG_SOURCE_SUBDIR).tar.gz
- PKG_BUILD_DIR:=$(KERNEL_BUILD_DIR)/madwifi-$(PKG_VERSION)
+PKG_BUILD_DIR:=$(KERNEL_BUILD_DIR)/$(if $(PKG_BRANCH),$(PKG_BRANCH),madwifi-trunk)-$(PKG_VERSION)
- PATCH_DIR=./patches-upstream
-else
-# PKG_BRANCH:=madwifi-dfs
- PKG_REV:=3314
- PKG_VERSION:=r$(PKG_REV)
- PKG_RELEASE:=2.1
-
- PKG_SOURCE_PROTO:=svn
- PKG_SOURCE_VERSION:=$(PKG_REV)
- PKG_SOURCE_SUBDIR:=$(if $(PKG_BRANCH),$(PKG_BRANCH),madwifi-trunk)-$(PKG_VERSION)
- PKG_SOURCE_URL:=http://svn.madwifi.org/madwifi/$(if $(PKG_BRANCH),branches/$(PKG_BRANCH),trunk)
- PKG_SOURCE:=$(PKG_SOURCE_SUBDIR).tar.gz
+PATCH_DIR=./patches
- PKG_BUILD_DIR:=$(KERNEL_BUILD_DIR)/$(if $(PKG_BRANCH),$(PKG_BRANCH),madwifi-trunk)-$(PKG_VERSION)
-
- PATCH_DIR=./patches
-endif
+PKG_BUILD_DEPENDS:=wprobe
include $(INCLUDE_DIR)/package.mk
SUBMENU:=Wireless Drivers
TITLE:=Driver for Atheros wireless chipsets
URL:=http://madwifi.org/
- DEPENDS:=+wireless-tools @PCI_SUPPORT||TARGET_atheros @!TARGET_avr32
+ DEPENDS:=+wireless-tools @PCI_SUPPORT||TARGET_atheros @!TARGET_avr32 @!TARGET_etrax @LINUX_2_6
FILES:=$(MADWIFI_FILES)
AUTOLOAD:=$(call AutoLoad,50,$(MADWIFI_AUTOLOAD))
endef
source "$(SOURCE)/Config.in"
endef
+MADWIFI_INC = \
+ -I$(PKG_BUILD_DIR) \
+ -I$(PKG_BUILD_DIR)/include \
+ -I$(PKG_BUILD_DIR)/hal \
+ -I$(PKG_BUILD_DIR)/ath \
+ -I$(PKG_BUILD_DIR)/ath_hal \
+ -I$(PKG_BUILD_DIR)/net80211 \
+ -I$(STAGING_DIR)/usr/include/wprobe \
+ -include $(PKG_BUILD_DIR)/include/compat.h
+
MAKE_ARGS:= \
PATH="$(TARGET_PATH)" \
ARCH="$(LINUX_KARCH)" \
LDOPTS="--no-warn-mismatch " \
ATH_RATE="ath_rate/$(RATE_CONTROL)" \
DO_MULTI=1 \
+ INCS="$(MADWIFI_INC)" \
$(if $(CONFIG_MADWIFI_DEBUG),,DEBUG=) WARNINGS="-Wno-unused"
MAKE_VARS:= \
enable_atheros() {
local device="$1"
- # Can only set the country code to one setting for the entire system. The last country code is the one that will be applied.
+
+ config_get regdomain "$device" regdomain
+ [ -n "$regdomain" ] && echo "$regdomain" > /proc/sys/dev/$device/regdomain
+
config_get country "$device" country
[ -z "$country" ] && country="0"
- local cc="0"
- [ -e /proc/sys/dev/$device/countrycode ] && cc="$(cat /proc/sys/dev/$device/countrycode)"
- if [ ! "$cc" = "$country" ] ; then
- rmmod ath_pci
- insmod ath_pci countrycode=$country
- fi
+ echo "$country" > /proc/sys/dev/$device/countrycode
+
+ config_get_bool outdoor "$device" outdoor "0"
+ echo "$outdoor" > /proc/sys/dev/$device/outdoor
+
config_get channel "$device" channel
config_get vifs "$device" vifs
config_get txpower "$device" txpower
+++ /dev/null
-Index: madwifi-0.9.4/ath/if_ath.c
-===================================================================
---- madwifi-0.9.4.old/ath/if_ath.c 2008-02-13 06:13:10.000000000 +0100
-+++ madwifi-0.9.4/ath/if_ath.c 2008-05-06 10:25:15.000000000 +0200
-@@ -404,7 +404,7 @@
- struct ath_hal *ah;
- HAL_STATUS status;
- int error = 0, i;
-- int autocreatemode = IEEE80211_M_STA;
-+ int autocreatemode = -1;
- u_int8_t csz;
-
- sc->devid = devid;
+++ /dev/null
-Index: madwifi-0.9.4/ath_rate/minstrel/minstrel.c
-===================================================================
---- madwifi-0.9.4.old/ath_rate/minstrel/minstrel.c 2007-12-12 05:11:07.000000000 +0100
-+++ madwifi-0.9.4/ath_rate/minstrel/minstrel.c 2008-07-24 15:15:41.000000000 +0200
-@@ -394,6 +394,9 @@
- int rc1, rc2, rc3; /* Index into the rate table, so for example, it is 0..11 */
- int rixc1, rixc2, rixc3; /* The actual bit rate used */
-
-+ if (sn->num_rates <= 0)
-+ return;
-+
- if (sn->is_sampling) {
- sn->is_sampling = 0;
- if (sn->rs_sample_rate_slower)
--- a/net80211/ieee80211_crypto_ccmp.c
+++ b/net80211/ieee80211_crypto_ccmp.c
-@@ -475,6 +475,9 @@ ccmp_encrypt(struct ieee80211_key *key,
+@@ -115,6 +115,7 @@ ccmp_attach(struct ieee80211vap *vap, st
+ /* This function (crypto_alloc_foo might sleep. Therefore:
+ * Context: process
+ */
++#ifdef CONFIG_CRYPTO
+ #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)
+ ctx->cc_tfm = crypto_alloc_tfm("aes", 0);
+ #else
+@@ -123,7 +124,8 @@ ccmp_attach(struct ieee80211vap *vap, st
+ if (IS_ERR(ctx->cc_tfm))
+ ctx->cc_tfm = NULL;
+ #endif
+-
++#endif
++
+ if (ctx->cc_tfm == NULL) {
+ IEEE80211_DPRINTF(vap, IEEE80211_MSG_CRYPTO,
+ "%s: unable to load kernel AES crypto support\n",
+@@ -138,12 +140,14 @@ ccmp_detach(struct ieee80211_key *k)
+ {
+ struct ccmp_ctx *ctx = k->wk_private;
+
++#ifdef CONFIG_CRYPTO
+ if (ctx->cc_tfm != NULL)
+ #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)
+ crypto_free_tfm(ctx->cc_tfm);
+ #else
+ crypto_free_cipher(ctx->cc_tfm);
+ #endif
++#endif
+ FREE(ctx, M_DEVBUF);
+
+ _MOD_DEC_USE(THIS_MODULE);
+@@ -169,7 +173,9 @@ ccmp_setkey(struct ieee80211_key *k)
+ return 0;
+ }
+
++#ifdef CONFIG_CRYPTO
+ crypto_cipher_setkey(ctx->cc_tfm, k->wk_key, k->wk_keylen);
++#endif
+ }
+
+ return 1;
+@@ -324,6 +330,7 @@ xor_block(u8 *b, const u8 *a, size_t len
+ static void
+ rijndael_encrypt(struct crypto_cipher *tfm, const void *src, void *dst)
+ {
++#ifdef CONFIG_CRYPTO
+ #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,19)
+ crypto_cipher_encrypt_one(tfm, dst, src);
+ #else
+@@ -339,6 +346,7 @@ rijndael_encrypt(struct crypto_cipher *t
+ sg_dst.length = AES_BLOCK_LEN;
+ crypto_cipher_encrypt(tfm, &sg_dst, &sg_src, AES_BLOCK_LEN);
+ #endif
++#endif
+ }
+
+ /*
+@@ -475,6 +483,9 @@ ccmp_encrypt(struct ieee80211_key *key,
uint8_t *mic, *pos;
u_int space;
ctx->cc_vap->iv_stats.is_crypto_ccmp++;
skb = skb0;
-@@ -589,6 +592,9 @@ ccmp_decrypt(struct ieee80211_key *key,
+@@ -589,6 +600,9 @@ ccmp_decrypt(struct ieee80211_key *key,
uint8_t *pos, *mic;
u_int space;
ctx->cc_vap->iv_stats.is_crypto_ccmp++;
skb = skb0;
+--- a/Makefile
++++ b/Makefile
+@@ -192,11 +192,4 @@ endif
+ exit 1; \
+ fi
+
+- @# check crypto support is enabled
+- @if [ -z "$(CONFIG_CRYPTO)" ]; then \
+- echo "FAILED"; \
+- echo "Please enable crypto API."; \
+- exit 1; \
+- fi
+-
+ @echo "ok."
/* Identify mode capabilities. */
if (IEEE80211_IS_CHAN_A(c))
ic->ic_modecaps |= 1 << IEEE80211_MODE_11A;
+@@ -1447,10 +1452,6 @@ ieee80211_media_change(struct net_device
+ vap->iv_fixed_rate = newrate; /* fixed TX rate */
+ error = -ENETRESET;
+ }
+- if (vap->iv_des_mode != newmode) {
+- vap->iv_des_mode = newmode; /* desired PHY mode */
+- error = -ENETRESET;
+- }
+ return error;
+ }
+ EXPORT_SYMBOL(ieee80211_media_change);
--- a/net80211/_ieee80211.h
+++ b/net80211/_ieee80211.h
@@ -132,6 +132,11 @@ enum ieee80211_scanmode {
IEEE80211_WMMPARAMS_CWMIN = 1,
--- a/net80211/ieee80211_scan_ap.c
+++ b/net80211/ieee80211_scan_ap.c
-@@ -129,131 +129,7 @@ struct ap_state {
+@@ -105,11 +105,6 @@ struct scan_entry {
+ };
+
+ struct ap_state {
+- unsigned int as_vap_desired_mode; /* Used for channel selection,
+- * vap->iv_des_mode */
+- unsigned int as_required_mode; /* Used for channel selection,
+- * filtered version of
+- * as_vap_desired_mode */
+ int as_maxrssi[IEEE80211_CHAN_MAX]; /* Used for channel selection */
+
+ /* These fields are just for scan caching for returning responses to
+@@ -129,131 +124,7 @@ struct ap_state {
static int ap_flush(struct ieee80211_scan_state *);
static void action_tasklet(IEEE80211_TQUEUE_ARG);
/*
* Attach prior to any scanning work.
-@@ -327,29 +203,6 @@ saveie(u_int8_t **iep, const u_int8_t *i
+@@ -327,29 +198,6 @@ saveie(u_int8_t **iep, const u_int8_t *i
ieee80211_saveie(iep, ie);
}
/*
* Start an ap scan by populating the channel list.
*/
-@@ -358,8 +211,6 @@ ap_start(struct ieee80211_scan_state *ss
+@@ -358,90 +206,15 @@ ap_start(struct ieee80211_scan_state *ss
{
struct ap_state *as = ss->ss_priv;
struct ieee80211com *ic = NULL;
int i;
unsigned int mode = 0;
-@@ -368,80 +219,8 @@ ap_start(struct ieee80211_scan_state *ss
+ SCAN_AP_LOCK_IRQ(as);
+ ic = vap->iv_ic;
/* Determine mode flags to match, or leave zero for auto mode */
- as->as_vap_desired_mode = vap->iv_des_mode;
- as->as_required_mode = 0;
+- as->as_vap_desired_mode = vap->iv_des_mode;
+- as->as_required_mode = 0;
- if (as->as_vap_desired_mode != IEEE80211_MODE_AUTO) {
- as->as_required_mode = chanflags[as->as_vap_desired_mode];
- if ((vap->iv_ath_cap & IEEE80211_ATHC_TURBOP) &&
- }
- }
-
-- ss->ss_last = 0;
+ ss->ss_last = 0;
- /* Use the table of ordered channels to construct the list
- * of channels for scanning. Any channels in the ordered
- * list not in the master list will be discarded. */
- /* XR is not supported on turbo channels */
- if (IEEE80211_IS_CHAN_TURBO(c) && vap->iv_flags & IEEE80211_F_XR)
- continue;
-+ ieee80211_scan_add_channels(ic, ss, vap->iv_des_mode);
-
+-
- /* Dynamic channels are scanned in base mode */
- if (!as->as_required_mode && !IEEE80211_IS_CHAN_ST(c))
- continue;
- /* Make sure the channel is active */
- if ((c == NULL) || isclr(ic->ic_chan_active, c->ic_ieee))
- continue;
--
++ ieee80211_scan_add_channels(ic, ss, vap->iv_des_mode);
+
- /* Don't overrun */
- if (ss->ss_last >= IEEE80211_SCAN_MAX)
- break;
ss->ss_next = 0;
/* XXX tunables */
ss->ss_mindwell = msecs_to_jiffies(200); /* 200ms */
-@@ -761,13 +540,6 @@ pick_channel(struct ieee80211_scan_state
+@@ -761,18 +534,6 @@ pick_channel(struct ieee80211_scan_state
if (IEEE80211_IS_CHAN_RADAR(c->chan))
continue;
- (as->as_vap_desired_mode != IEEE80211_MODE_TURBO_STATIC_A))
- continue;
-
- /* Verify mode matches any fixed mode specified */
- if((c->chan->ic_flags & as->as_required_mode) !=
- as->as_required_mode)
+- /* Verify mode matches any fixed mode specified */
+- if((c->chan->ic_flags & as->as_required_mode) !=
+- as->as_required_mode)
+- continue;
+-
+ if ((ic->ic_bsschan != NULL) &&
+ (ic->ic_bsschan != IEEE80211_CHAN_ANYC)) {
+
--- a/net80211/ieee80211_scan.c
+++ b/net80211/ieee80211_scan.c
@@ -958,6 +958,80 @@ ieee80211_scan_flush(struct ieee80211com
#define IEEE80211_CHAN_MAX 255
--- a/net80211/ieee80211_scan_ap.c
+++ b/net80211/ieee80211_scan_ap.c
-@@ -423,6 +423,19 @@ pc_cmp_rssi(struct ap_state *as, struct
+@@ -417,6 +417,19 @@ pc_cmp_rssi(struct ap_state *as, struct
/* This function must be invoked with locks acquired */
static int
pc_cmp_samechan(struct ieee80211com *ic, struct ieee80211_channel *a,
struct ieee80211_channel *b)
{
-@@ -457,6 +470,7 @@ pc_cmp(const void *_a, const void *_b)
+@@ -451,6 +464,7 @@ pc_cmp(const void *_a, const void *_b)
EVALUATE_CRITERION(radar, a, b);
EVALUATE_CRITERION(keepmode, params, a, b);
/* update Supported Channels information element */
--- a/net80211/ieee80211_scan_ap.c
+++ b/net80211/ieee80211_scan_ap.c
-@@ -213,9 +213,15 @@ ap_start(struct ieee80211_scan_state *ss
+@@ -208,9 +208,15 @@ ap_start(struct ieee80211_scan_state *ss
struct ieee80211com *ic = NULL;
int i;
unsigned int mode = 0;
+ spin_unlock_irqrestore(&channel_lock, sflags);
+
/* Determine mode flags to match, or leave zero for auto mode */
- as->as_vap_desired_mode = vap->iv_des_mode;
- as->as_required_mode = 0;
-@@ -429,8 +435,10 @@ pc_cmp_idletime(struct ieee80211_channel
+ ss->ss_last = 0;
+ ieee80211_scan_add_channels(ic, ss, vap->iv_des_mode);
+@@ -423,8 +429,10 @@ pc_cmp_idletime(struct ieee80211_channel
if (!a->ic_idletime || !b->ic_idletime)
return 0;
}
-@@ -616,6 +624,7 @@ ap_end(struct ieee80211_scan_state *ss,
+@@ -605,6 +613,7 @@ ap_end(struct ieee80211_scan_state *ss,
struct ap_state *as = ss->ss_priv;
struct ieee80211_channel *bestchan = NULL;
struct ieee80211com *ic = NULL;
int res = 1;
SCAN_AP_LOCK_IRQ(as);
-@@ -624,8 +633,11 @@ ap_end(struct ieee80211_scan_state *ss,
+@@ -613,8 +622,11 @@ ap_end(struct ieee80211_scan_state *ss,
("wrong opmode %u", vap->iv_opmode));
ic = vap->iv_ic;
if (ss->ss_last > 0) {
/* no suitable channel, should not happen */
printk(KERN_ERR "%s: %s: no suitable channel! "
-@@ -644,6 +656,7 @@ ap_end(struct ieee80211_scan_state *ss,
+@@ -633,6 +645,7 @@ ap_end(struct ieee80211_scan_state *ss,
bestchan->ic_freq, bestchan->ic_flags &
~IEEE80211_CHAN_TURBO)) == NULL) {
/* should never happen ?? */
SCAN_AP_UNLOCK_IRQ_EARLY(as);
return 0;
}
-@@ -656,6 +669,9 @@ ap_end(struct ieee80211_scan_state *ss,
+@@ -645,6 +658,9 @@ ap_end(struct ieee80211_scan_state *ss,
as->as_action = action;
as->as_selbss = se;
--- /dev/null
+--- /dev/null
++++ b/ath/ath_wprobe.c
+@@ -0,0 +1,392 @@
++#include <net80211/ieee80211_node.h>
++#include <linux/wprobe.h>
++
++atomic_t cleanup_tasks = ATOMIC_INIT(0);
++
++enum wp_node_val {
++ WP_NODE_RSSI,
++ WP_NODE_SIGNAL,
++ WP_NODE_RX_RATE,
++ WP_NODE_TX_RATE,
++ WP_NODE_RETRANSMIT_200,
++ WP_NODE_RETRANSMIT_400,
++ WP_NODE_RETRANSMIT_800,
++ WP_NODE_RETRANSMIT_1600,
++};
++
++enum wp_global_val {
++ WP_GLOBAL_NOISE,
++ WP_GLOBAL_PHY_BUSY,
++ WP_GLOBAL_PHY_RX,
++ WP_GLOBAL_PHY_TX,
++ WP_GLOBAL_FRAMES,
++ WP_GLOBAL_PROBEREQ,
++};
++
++static struct wprobe_item ath_wprobe_globals[] = {
++ [WP_GLOBAL_NOISE] = {
++ .name = "noise",
++ .type = WPROBE_VAL_S16,
++ .flags = WPROBE_F_KEEPSTAT
++ },
++ [WP_GLOBAL_PHY_BUSY] = {
++ .name = "phy_busy",
++ .type = WPROBE_VAL_U8,
++ .flags = WPROBE_F_KEEPSTAT
++ },
++ [WP_GLOBAL_PHY_RX] = {
++ .name = "phy_rx",
++ .type = WPROBE_VAL_U8,
++ .flags = WPROBE_F_KEEPSTAT
++ },
++ [WP_GLOBAL_PHY_TX] = {
++ .name = "phy_tx",
++ .type = WPROBE_VAL_U8,
++ .flags = WPROBE_F_KEEPSTAT
++ },
++ [WP_GLOBAL_FRAMES] = {
++ .name = "frames",
++ .type = WPROBE_VAL_U32,
++ },
++ [WP_GLOBAL_PROBEREQ] = {
++ .name = "probereq",
++ .type = WPROBE_VAL_U32,
++ },
++};
++
++static struct wprobe_item ath_wprobe_link[] = {
++ [WP_NODE_RSSI] = {
++ .name = "rssi",
++ .type = WPROBE_VAL_U8,
++ .flags = WPROBE_F_KEEPSTAT
++ },
++ [WP_NODE_SIGNAL] = {
++ .name = "signal",
++ .type = WPROBE_VAL_S16,
++ .flags = WPROBE_F_KEEPSTAT
++ },
++ [WP_NODE_RX_RATE] = {
++ .name = "rx_rate",
++ .type = WPROBE_VAL_U16,
++ .flags = WPROBE_F_KEEPSTAT
++ },
++ [WP_NODE_TX_RATE] = {
++ .name = "tx_rate",
++ .type = WPROBE_VAL_U16,
++ .flags = WPROBE_F_KEEPSTAT
++ },
++ [WP_NODE_RETRANSMIT_200] = {
++ .name = "retransmit_200",
++ .type = WPROBE_VAL_U8,
++ .flags = WPROBE_F_KEEPSTAT
++ },
++ [WP_NODE_RETRANSMIT_400] = {
++ .name = "retransmit_400",
++ .type = WPROBE_VAL_U8,
++ .flags = WPROBE_F_KEEPSTAT
++ },
++ [WP_NODE_RETRANSMIT_800] = {
++ .name = "retransmit_800",
++ .type = WPROBE_VAL_U8,
++ .flags = WPROBE_F_KEEPSTAT
++ },
++ [WP_NODE_RETRANSMIT_1600] = {
++ .name = "retransmit_1600",
++ .type = WPROBE_VAL_U8,
++ .flags = WPROBE_F_KEEPSTAT
++ },
++};
++
++#define AR5K_MIBC 0x0040
++#define AR5K_MIBC_FREEZE (1 << 1)
++#define AR5K_TXFC 0x80ec
++#define AR5K_RXFC 0x80f0
++#define AR5K_RXCLEAR 0x80f4
++#define AR5K_CYCLES 0x80f8
++
++#define READ_CLR(_ah, _reg) \
++ ({ u32 __val = OS_REG_READ(_ah, _reg); OS_REG_WRITE(_ah, _reg, 0); __val; })
++
++static bool
++wprobe_disabled(void)
++{
++ return (!wprobe_add_iface || IS_ERR(wprobe_add_iface));
++}
++
++static int
++ath_wprobe_sync(struct wprobe_iface *dev, struct wprobe_link *l, struct wprobe_value *val, bool measure)
++{
++ struct ath_vap *avp = container_of(dev, struct ath_vap, av_wpif);
++ struct ieee80211vap *vap = &avp->av_vap;
++ struct ieee80211com *ic = vap->iv_ic;
++ struct ath_softc *sc = ic->ic_dev->priv;
++ struct ath_hal *ah = sc->sc_ah;
++ u32 cc, busy, rx, tx;
++ s16 noise;
++
++ if (l)
++ goto out;
++
++ OS_REG_WRITE(ah, AR5K_MIBC, AR5K_MIBC_FREEZE);
++ cc = READ_CLR(ah, AR5K_CYCLES);
++ busy = READ_CLR(ah, AR5K_RXCLEAR);
++ rx = READ_CLR(ah, AR5K_RXFC);
++ tx = READ_CLR(ah, AR5K_TXFC);
++ OS_REG_WRITE(ah, AR5K_MIBC, 0);
++ noise = ath_hal_get_channel_noise(sc->sc_ah, &(sc->sc_curchan));
++ ic->ic_channoise = noise;
++
++ WPROBE_FILL_BEGIN(val, ath_wprobe_globals);
++ if (cc & 0xf0000000) {
++ /* scale down if the counters are near max */
++ cc >>= 8;
++ busy >>= 8;
++ rx >>= 8;
++ tx >>= 8;
++ }
++ if (ah->ah_macType < 5212)
++ goto phy_skip;
++ if (!cc)
++ goto phy_skip;
++ if (busy > cc)
++ goto phy_skip;
++ if (rx > cc)
++ goto phy_skip;
++ if (tx > cc)
++ goto phy_skip;
++ busy = (busy * 100) / cc;
++ rx = (rx * 100) / cc;
++ tx = (tx * 100) / cc;
++ WPROBE_SET(WP_GLOBAL_PHY_BUSY, U8, busy);
++ WPROBE_SET(WP_GLOBAL_PHY_RX, U8, rx);
++ WPROBE_SET(WP_GLOBAL_PHY_TX, U8, tx);
++ WPROBE_SET(WP_GLOBAL_FRAMES, U32, avp->av_rxframes);
++ WPROBE_SET(WP_GLOBAL_PROBEREQ, U32, avp->av_rxprobereq);
++
++phy_skip:
++ WPROBE_SET(WP_GLOBAL_NOISE, S16, noise);
++ WPROBE_FILL_END();
++
++out:
++ return 0;
++}
++
++#undef AR5K_TXFC
++#undef AR5K_RXFC
++#undef AR5K_RXCLEAR
++#undef AR5K_CYCLES
++#undef AR5K_MIBC
++#undef AR5K_MIBC_FREEZE
++#undef READ_CLR
++
++static const struct wprobe_iface ath_wprobe_dev = {
++ .link_items = ath_wprobe_link,
++ .n_link_items = ARRAY_SIZE(ath_wprobe_link),
++ .global_items = ath_wprobe_globals,
++ .n_global_items = ARRAY_SIZE(ath_wprobe_globals),
++ .sync_data = ath_wprobe_sync,
++};
++
++static int
++ath_lookup_rateval(struct ieee80211_node *ni, int rate)
++{
++ struct ieee80211vap *vap = ni->ni_vap;
++ struct ieee80211com *ic = vap->iv_ic;
++ struct ath_softc *sc = ic->ic_dev->priv;
++ const HAL_RATE_TABLE *rt = sc->sc_currates;
++
++ if ((!rt) || (rate < 0) || (rate >= ARRAY_SIZE(sc->sc_hwmap)))
++ return -1;
++
++ rate = sc->sc_hwmap[rate].ieeerate;
++ rate = sc->sc_rixmap[rate & IEEE80211_RATE_VAL];
++ if ((rate < 0) || (rate >= rt->rateCount))
++ return -1;
++
++ return rt->info[rate].rateKbps / 10;
++}
++
++static void
++ath_node_sample_rx(struct ieee80211_node *ni, struct ath_rx_status *rs)
++{
++ struct ath_node *an = ATH_NODE(ni);
++ struct ieee80211vap *vap = ni->ni_vap;
++ struct ieee80211com *ic = vap->iv_ic;
++ struct wprobe_link *l = &an->an_wplink;
++ struct wprobe_value *v = l->val;
++ unsigned long flags;
++ int rate;
++
++ if (wprobe_disabled() || !an->an_wplink_active || !l->val)
++ return;
++
++ rate = ath_lookup_rateval(ni, rs->rs_rate);
++
++ spin_lock_irqsave(&l->iface->lock, flags);
++ WPROBE_FILL_BEGIN(v, ath_wprobe_link);
++ WPROBE_SET(WP_NODE_RSSI, U8, rs->rs_rssi);
++ WPROBE_SET(WP_NODE_SIGNAL, S16, ic->ic_channoise + rs->rs_rssi);
++ if ((rate > 0) && (rate <= 600000))
++ WPROBE_SET(WP_NODE_RX_RATE, U16, rate);
++ WPROBE_FILL_END();
++ wprobe_update_stats(l->iface, l);
++ spin_unlock_irqrestore(&l->iface->lock, flags);
++}
++
++static void
++ath_node_sample_tx(struct ieee80211_node *ni, struct ath_tx_status *ts, int len)
++{
++ struct ath_node *an = ATH_NODE(ni);
++ struct ieee80211vap *vap = ni->ni_vap;
++ struct ieee80211com *ic = vap->iv_ic;
++ struct wprobe_link *l = &an->an_wplink;
++ struct wprobe_value *v = l->val;
++ unsigned long flags;
++ int rate, rexmit_counter;
++
++ if (wprobe_disabled() || !an->an_wplink_active || !l->val)
++ return;
++
++ rate = ath_lookup_rateval(ni, ts->ts_rate);
++
++ spin_lock_irqsave(&l->iface->lock, flags);
++ WPROBE_FILL_BEGIN(v, ath_wprobe_link);
++ WPROBE_SET(WP_NODE_RSSI, U8, ts->ts_rssi);
++ WPROBE_SET(WP_NODE_SIGNAL, S16, ic->ic_channoise + ts->ts_rssi);
++
++ if (len <= 200)
++ rexmit_counter = WP_NODE_RETRANSMIT_200;
++ else if (len <= 400)
++ rexmit_counter = WP_NODE_RETRANSMIT_400;
++ else if (len <= 800)
++ rexmit_counter = WP_NODE_RETRANSMIT_800;
++ else
++ rexmit_counter = WP_NODE_RETRANSMIT_1600;
++ WPROBE_SET(rexmit_counter, U8, ts->ts_longretry);
++
++ if ((rate > 0) && (rate <= 600000))
++ WPROBE_SET(WP_NODE_TX_RATE, U16, rate);
++ WPROBE_FILL_END();
++ wprobe_update_stats(l->iface, l);
++ spin_unlock_irqrestore(&l->iface->lock, flags);
++}
++
++static void
++ath_wprobe_report_rx(struct ieee80211vap *vap, struct sk_buff *skb)
++{
++ struct ieee80211_frame *wh = (struct ieee80211_frame *)skb->data;
++ struct ath_vap *avp;
++
++ if (wprobe_disabled())
++ return;
++
++ avp = ATH_VAP(vap);
++ avp->av_rxframes++;
++ if (wh->i_fc[0] == (IEEE80211_FC0_TYPE_MGT | IEEE80211_FC0_SUBTYPE_PROBE_REQ))
++ avp->av_rxprobereq++;
++}
++
++static void
++ath_wprobe_node_join(struct ieee80211vap *vap, struct ieee80211_node *ni)
++{
++ struct wprobe_iface *dev;
++ struct wprobe_link *l;
++ struct ath_vap *avp;
++ struct ath_node *an = ATH_NODE(ni);
++
++ if (wprobe_disabled() || an->an_wplink_active)
++ return;
++
++ avp = ATH_VAP(vap);
++ dev = &avp->av_wpif;
++ l = &an->an_wplink;
++
++ ieee80211_ref_node(ni);
++ wprobe_add_link(dev, l, ni->ni_macaddr);
++ an->an_wplink_active = 1;
++}
++
++static void
++ath_wprobe_do_node_leave(struct work_struct *work)
++{
++ struct ath_node *an = container_of(work, struct ath_node, an_destroy);
++ struct ieee80211_node *ni = &an->an_node;
++ struct ieee80211vap *vap = ni->ni_vap;
++ struct wprobe_iface *dev;
++ struct wprobe_link *l;
++ struct ath_vap *avp;
++
++ avp = ATH_VAP(vap);
++ dev = &avp->av_wpif;
++ l = &an->an_wplink;
++
++ wprobe_remove_link(dev, l);
++ ieee80211_unref_node(&ni);
++ atomic_dec(&cleanup_tasks);
++}
++
++static void
++ath_wprobe_node_leave(struct ieee80211vap *vap, struct ieee80211_node *ni)
++{
++ struct ath_node *an = ATH_NODE(ni);
++
++ if (wprobe_disabled() || !an->an_wplink_active)
++ return;
++
++ atomic_inc(&cleanup_tasks);
++ an->an_wplink_active = 0;
++ IEEE80211_INIT_WORK(&an->an_destroy, ath_wprobe_do_node_leave);
++ schedule_work(&an->an_destroy);
++}
++
++static void
++ath_init_wprobe_dev(struct ath_vap *avp)
++{
++ struct ieee80211vap *vap = &avp->av_vap;
++ struct wprobe_iface *dev = &avp->av_wpif;
++
++ if (wprobe_disabled() || (vap->iv_opmode == IEEE80211_M_WDS))
++ return;
++
++ memcpy(dev, &ath_wprobe_dev, sizeof(struct wprobe_iface));
++ dev->addr = vap->iv_myaddr;
++ dev->name = vap->iv_dev->name;
++ wprobe_add_iface(dev);
++}
++
++static void
++ath_remove_wprobe_dev(struct ath_vap *avp)
++{
++ struct ieee80211vap *vap = &avp->av_vap;
++ struct ieee80211com *ic = vap->iv_ic;
++ struct ieee80211_node *ni;
++ struct wprobe_iface *dev = &avp->av_wpif;
++ struct wprobe_link *l;
++ struct ath_node *an;
++ unsigned long flags;
++
++ if (wprobe_disabled() || (vap->iv_opmode == IEEE80211_M_WDS))
++ return;
++
++restart:
++ rcu_read_lock();
++ list_for_each_entry_rcu(l, &dev->links, list) {
++ an = container_of(l, struct ath_node, an_wplink);
++
++ if (!an->an_wplink_active)
++ continue;
++
++ ni = &an->an_node;
++ ath_wprobe_node_leave(vap, ni);
++ rcu_read_unlock();
++ goto restart;
++ }
++ rcu_read_unlock();
++
++ /* wait for the cleanup tasks to finish */
++ while (atomic_read(&cleanup_tasks) != 0) {
++ schedule();
++ }
++
++ wprobe_remove_iface(dev);
++}
+--- a/ath/if_ath.c
++++ b/ath/if_ath.c
+@@ -400,6 +400,7 @@ static int countrycode = -1;
+ static int maxvaps = -1;
+ static int outdoor = -1;
+ static int xchanmode = -1;
++#include "ath_wprobe.c"
+ static int beacon_cal = 1;
+
+ static const struct ath_hw_detect generic_hw_info = {
+@@ -1525,6 +1526,7 @@ ath_vap_create(struct ieee80211com *ic,
+ ath_hal_intrset(ah, sc->sc_imask);
+ }
+
++ ath_init_wprobe_dev(avp);
+ return vap;
+ }
+
+@@ -1605,6 +1607,7 @@ ath_vap_delete(struct ieee80211vap *vap)
+ decrease = 0;
+
+ ieee80211_vap_detach(vap);
++ ath_remove_wprobe_dev(ATH_VAP(vap));
+ /* NB: memory is reclaimed through dev->destructor callback */
+ if (decrease)
+ sc->sc_nvaps--;
+@@ -5931,6 +5934,7 @@ ath_node_cleanup(struct ieee80211_node *
+ /* Clean up node-specific rate things - this currently appears to
+ * always be a no-op */
+ sc->sc_rc->ops->node_cleanup(sc, ATH_NODE(ni));
++ ath_wprobe_node_leave(ni->ni_vap, ni);
+
+ ATH_NODE_UAPSD_LOCK_IRQ(an);
+ #ifdef IEEE80211_DEBUG_REFCNT
+@@ -7001,6 +7005,8 @@ drop_micfail:
+ goto lookup_slowpath;
+ }
+ ATH_RSSI_LPF(ATH_NODE(ni)->an_avgrssi, rs->rs_rssi);
++ ath_node_sample_rx(ni, rs);
++ ath_wprobe_report_rx(ni->ni_vap, skb);
+ type = ieee80211_input(ni->ni_vap, ni, skb, rs->rs_rssi, bf->bf_tsf);
+ ieee80211_unref_node(&ni);
+ } else {
+@@ -7011,15 +7017,22 @@ drop_micfail:
+
+ lookup_slowpath:
+ vap = ieee80211_find_rxvap(ic, wh->i_addr1);
+- if (vap)
++ if (vap) {
++ ath_wprobe_report_rx(vap, skb);
+ ni = ieee80211_find_rxnode(ic, vap, wh);
+- else
++ } else {
++ TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
++ ath_wprobe_report_rx(vap, skb);
++ }
++ vap = NULL;
+ ni = NULL;
++ }
+
+ if (ni != NULL) {
+ ieee80211_keyix_t keyix;
+
+ ATH_RSSI_LPF(ATH_NODE(ni)->an_avgrssi, rs->rs_rssi);
++ ath_node_sample_rx(ni, rs);
+ type = ieee80211_input(vap, ni, skb, rs->rs_rssi, bf->bf_tsf);
+ /*
+ * If the station has a key cache slot assigned
+@@ -8599,6 +8612,7 @@ ath_tx_processq(struct ath_softc *sc, st
+ sc->sc_stats.ast_tx_rssi = ts->ts_rssi;
+ ATH_RSSI_LPF(an->an_halstats.ns_avgtxrssi,
+ ts->ts_rssi);
++ ath_node_sample_tx(&an->an_node, ts, bf->bf_skb->len);
+ if (bf->bf_skb->priority == WME_AC_VO ||
+ bf->bf_skb->priority == WME_AC_VI)
+ ni->ni_ic->ic_wme.wme_hipri_traffic++;
+@@ -10090,6 +10104,7 @@ ath_newassoc(struct ieee80211_node *ni,
+ struct ath_softc *sc = ic->ic_dev->priv;
+
+ sc->sc_rc->ops->newassoc(sc, ATH_NODE(ni), isnew);
++ ath_wprobe_node_join(ni->ni_vap, ni);
+
+ /* are we supporting compression? */
+ if (!(vap->iv_ath_cap & ni->ni_ath_flags & IEEE80211_NODE_COMP))
+--- a/ath/if_athvar.h
++++ b/ath/if_athvar.h
+@@ -46,6 +46,7 @@
+ #include "ah_desc.h"
+ #include "ah_os.h"
+ #include "if_athioctl.h"
++#include <linux/wprobe.h>
+ #include "net80211/ieee80211.h" /* XXX for WME_NUM_AC */
+ #include <asm/io.h>
+ #include <linux/list.h>
+@@ -352,6 +353,9 @@ typedef STAILQ_HEAD(, ath_buf) ath_bufhe
+ /* driver-specific node state */
+ struct ath_node {
+ struct ieee80211_node an_node; /* base class */
++ struct wprobe_link an_wplink;
++ uint8_t an_wplink_active;
++ struct work_struct an_destroy;
+ u_int16_t an_decomp_index; /* decompression mask index */
+ u_int32_t an_avgrssi; /* average rssi over all rx frames */
+ u_int8_t an_prevdatarix; /* rate ix of last data frame */
+@@ -521,6 +525,9 @@ struct ath_vap {
+ #else
+ unsigned int av_beacon_alloc;
+ #endif
++ struct wprobe_iface av_wpif;
++ u32 av_rxframes;
++ u32 av_rxprobereq;
+ };
+ #define ATH_VAP(_v) ((struct ath_vap *)(_v))
+
+++ /dev/null
---- a/net80211/ieee80211_scan.c
-+++ b/net80211/ieee80211_scan.c
-@@ -1129,7 +1129,11 @@ ieee80211_scan_add_channels(struct ieee8
- continue;
- if (c->ic_scanflags & IEEE80211_NOSCAN_SET)
- continue;
-- if (modeflags &&
-+ if (ss->ss_vap->iv_opmode == IEEE80211_M_HOSTAP) {
-+ if ((c->ic_flags & (IEEE80211_CHAN_TURBO | IEEE80211_CHAN_STURBO)) !=
-+ (modeflags & (IEEE80211_CHAN_TURBO | IEEE80211_CHAN_STURBO)))
-+ continue;
-+ } else if (modeflags &&
- ((c->ic_flags & IEEE80211_CHAN_ALLTURBO) !=
- (modeflags & IEEE80211_CHAN_ALLTURBO)))
- continue;
--- a/ath/if_ath.c
+++ b/ath/if_ath.c
-@@ -5344,27 +5344,6 @@ ath_beacon_send(struct ath_softc *sc, in
+@@ -797,7 +797,6 @@ ath_attach(u_int16_t devid, struct net_d
+ break;
+ }
+
+- sc->sc_setdefantenna = ath_setdefantenna;
+ sc->sc_rc = ieee80211_rate_attach(sc, ratectl);
+ if (sc->sc_rc == NULL) {
+ error = EIO;
+@@ -2623,9 +2622,6 @@ ath_init(struct net_device *dev)
+ ath_radar_update(sc);
+ ath_rp_flush(sc);
+
+- /* Set the default RX antenna; it may get lost on reset. */
+- ath_setdefantenna(sc, sc->sc_defant);
+-
+ /*
+ * Setup the hardware after reset: the key cache
+ * is filled as needed and the receive engine is
+@@ -3010,7 +3006,6 @@ ath_reset(struct net_device *dev)
+ ath_setintmit(sc);
+ ath_update_txpow(sc); /* update tx power state */
+ ath_radar_update(sc);
+- ath_setdefantenna(sc, sc->sc_defant);
+ if (ath_startrecv(sc) != 0) /* restart recv */
+ EPRINTF(sc, "Unable to start receive logic.\n");
+ if (sc->sc_softled)
+@@ -5344,27 +5339,6 @@ ath_beacon_send(struct ath_softc *sc, in
} else if ((sc->sc_updateslot == COMMIT) && (sc->sc_slotupdate == slot))
ath_setslottime(sc); /* commit change to hardware */
if (bfaddr != 0) {
/*
* Stop any current DMA and put the new frame(s) on the queue.
+@@ -6725,9 +6699,8 @@ ath_setdefantenna(struct ath_softc *sc,
+ {
+ struct ath_hal *ah = sc->sc_ah;
+
+- /* XXX block beacon interrupts */
+- ath_hal_setdiversity(ah, (sc->sc_diversity != 0));
+ ath_hal_setdefantenna(ah, antenna);
++ ath_hal_setantennaswitch(ah, sc->sc_diversity ? 0 : sc->sc_defant);
+ if (sc->sc_defant != antenna)
+ sc->sc_stats.ast_ant_defswitch++;
+ sc->sc_defant = antenna;
+@@ -11138,7 +11111,7 @@ ATH_SYSCTL_DECL(ath_sysctl_halparam, ctl
+ break;
+ }
+ sc->sc_diversity = val;
+- ath_hal_setdiversity(ah, val);
++ ath_setdefantenna(sc, sc->sc_defant);
+ break;
+ case ATH_TXINTRPERIOD:
+ /* XXX: validate? */
+--- a/ath/if_athvar.h
++++ b/ath/if_athvar.h
+@@ -640,7 +640,6 @@ struct ath_softc {
+ spinlock_t sc_hal_lock; /* hardware access lock */
+ struct ath_ratectrl *sc_rc; /* tx rate control support */
+ struct ath_tx99 *sc_tx99; /* tx99 support */
+- void (*sc_setdefantenna)(struct ath_softc *, u_int);
+ const struct ath_hw_detect *sc_hwinfo;
+
+ unsigned int sc_invalid:1; /* being detached */
--- /dev/null
+--- a/ath/if_ath.c
++++ b/ath/if_ath.c
+@@ -148,7 +148,6 @@ static int ath_key_set(struct ieee80211v
+ static void ath_key_update_begin(struct ieee80211vap *);
+ static void ath_key_update_end(struct ieee80211vap *);
+ static void ath_mode_init(struct net_device *);
+-static void ath_setslottime(struct ath_softc *);
+ static void ath_updateslot(struct net_device *);
+ static int ath_beaconq_setup(struct ath_softc *);
+ static int ath_beacon_alloc(struct ath_softc *, struct ieee80211_node *);
+@@ -240,7 +239,7 @@ static void ath_setup_stationkey(struct
+ static void ath_setup_stationwepkey(struct ieee80211_node *);
+ static void ath_setup_keycacheslot(struct ath_softc *, struct ieee80211_node *);
+ static void ath_newassoc(struct ieee80211_node *, int);
+-static int ath_getchannels(struct net_device *, u_int, HAL_BOOL, HAL_BOOL);
++static int ath_getchannels(struct net_device *);
+ static void ath_led_event(struct ath_softc *, int);
+ static void ath_update_txpow(struct ath_softc *);
+
+@@ -265,7 +264,6 @@ static int ath_change_mtu(struct net_dev
+ static int ath_ioctl(struct net_device *, struct ifreq *, int);
+
+ static int ath_rate_setup(struct net_device *, u_int);
+-static void ath_setup_subrates(struct net_device *);
+ #ifdef ATH_SUPERG_XR
+ static int ath_xr_rate_setup(struct net_device *);
+ static void ath_grppoll_txq_setup(struct ath_softc *, int, int);
+@@ -387,8 +385,6 @@ static void ath_fetch_idle_time(struct a
+
+ /* calibrate every 30 secs in steady state but check every second at first. */
+ static int ath_calinterval = ATH_SHORT_CALINTERVAL;
+-static int ath_countrycode = CTRY_DEFAULT; /* country code */
+-static int ath_outdoor = AH_FALSE; /* enable outdoor use */
+ static int ath_xchanmode = AH_TRUE; /* enable extended channels */
+ static int ath_maxvaps = ATH_MAXVAPS_DEFAULT; /* set default maximum vaps */
+ static int bstuck_thresh = BSTUCK_THRESH; /* Stuck beacon count required for reset */
+@@ -396,9 +392,7 @@ static char *autocreate = NULL;
+ static char *ratectl = DEF_RATE_CTL;
+ static int rfkill = 0;
+ static int tpc = 1;
+-static int countrycode = -1;
+ static int maxvaps = -1;
+-static int outdoor = -1;
+ static int xchanmode = -1;
+ #include "ath_wprobe.c"
+ static int beacon_cal = 1;
+@@ -437,9 +431,7 @@ static struct notifier_block ath_event_b
+
+ #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,52))
+ MODULE_PARM(beacon_cal, "i");
+-MODULE_PARM(countrycode, "i");
+ MODULE_PARM(maxvaps, "i");
+-MODULE_PARM(outdoor, "i");
+ MODULE_PARM(xchanmode, "i");
+ MODULE_PARM(rfkill, "i");
+ #ifdef ATH_CAP_TPC
+@@ -451,9 +443,7 @@ MODULE_PARM(ratectl, "s");
+ #else
+ #include <linux/moduleparam.h>
+ module_param(beacon_cal, int, 0600);
+-module_param(countrycode, int, 0600);
+ module_param(maxvaps, int, 0600);
+-module_param(outdoor, int, 0600);
+ module_param(xchanmode, int, 0600);
+ module_param(rfkill, int, 0600);
+ #ifdef ATH_CAP_TPC
+@@ -463,9 +453,7 @@ module_param(bstuck_thresh, int, 0600);
+ module_param(autocreate, charp, 0600);
+ module_param(ratectl, charp, 0600);
+ #endif
+-MODULE_PARM_DESC(countrycode, "Override default country code");
+ MODULE_PARM_DESC(maxvaps, "Maximum VAPs");
+-MODULE_PARM_DESC(outdoor, "Enable/disable outdoor use");
+ MODULE_PARM_DESC(xchanmode, "Enable/disable extended channel mode");
+ MODULE_PARM_DESC(rfkill, "Enable/disable RFKILL capability");
+ #ifdef ATH_CAP_TPC
+@@ -531,6 +519,50 @@ MODULE_PARM_DESC(ieee80211_debug, "Load-
+ (bssid)[0] |= (((id) << 2) | 0x02); \
+ } while (0)
+
++static inline int ath_chan2mode(struct ieee80211_channel *c)
++{
++ if (IEEE80211_IS_CHAN_HALF(c))
++ return ATH_MODE_HALF;
++ else if (IEEE80211_IS_CHAN_QUARTER(c))
++ return ATH_MODE_QUARTER;
++ else
++ return ieee80211_chan2mode(c);
++}
++
++static inline int rate_hal2ieee(int dot11Rate, int f)
++{
++ int flag = dot11Rate & ~(IEEE80211_RATE_VAL);
++ dot11Rate &= IEEE80211_RATE_VAL;
++
++ if (f == 4) { /* Quarter */
++ if (dot11Rate == 4)
++ return 18 | flag;
++ }
++ return (dot11Rate * f) | flag;
++}
++
++static inline int rate_factor(int mode)
++{
++ int f;
++
++ /*
++ * NB: Fix up rates. HAL returns half or quarter dot11Rates,
++ * while the stack deals with full rates only
++ */
++ switch(mode) {
++ case ATH_MODE_HALF:
++ f = 2;
++ break;
++ case ATH_MODE_QUARTER:
++ f = 4;
++ break;
++ default:
++ f = 1;
++ break;
++ }
++ return f;
++}
++
+ /* Initialize ath_softc structure */
+
+ int
+@@ -647,14 +679,6 @@ ath_attach(u_int16_t devid, struct net_d
+ for (i = 0; i < sc->sc_keymax; i++)
+ ath_hal_keyreset(ah, i);
+
+- /*
+- * Collect the channel list using the default country
+- * code and including outdoor channels. The 802.11 layer
+- * is responsible for filtering this list based on settings
+- * like the phy mode.
+- */
+- if (countrycode != -1)
+- ath_countrycode = countrycode;
+ if (maxvaps != -1) {
+ ath_maxvaps = maxvaps;
+ if (ath_maxvaps < ATH_MAXVAPS_MIN)
+@@ -662,17 +686,14 @@ ath_attach(u_int16_t devid, struct net_d
+ else if (ath_maxvaps > ATH_MAXVAPS_MAX)
+ ath_maxvaps = ATH_MAXVAPS_MAX;
+ }
+- if (outdoor != -1)
+- ath_outdoor = outdoor;
+ if (xchanmode != -1)
+ ath_xchanmode = xchanmode;
+- error = ath_getchannels(dev, ath_countrycode,
+- ath_outdoor, ath_xchanmode);
++ error = ath_getchannels(dev);
+ if (error != 0)
+ goto bad;
+
+- ic->ic_country_code = ath_countrycode;
+- ic->ic_country_outdoor = ath_outdoor;
++ ic->ic_country_code = CTRY_DEFAULT;
++ ic->ic_country_outdoor = 0;
+
+ IPRINTF(sc, "Switching rfkill capability %s\n",
+ rfkill ? "on" : "off");
+@@ -686,9 +707,8 @@ ath_attach(u_int16_t devid, struct net_d
+ ath_rate_setup(dev, IEEE80211_MODE_11G);
+ ath_rate_setup(dev, IEEE80211_MODE_TURBO_A);
+ ath_rate_setup(dev, IEEE80211_MODE_TURBO_G);
+-
+- /* Setup for half/quarter rates */
+- ath_setup_subrates(dev);
++ ath_rate_setup(dev, ATH_MODE_HALF);
++ ath_rate_setup(dev, ATH_MODE_QUARTER);
+
+ /* NB: setup here so ath_rate_update is happy */
+ ath_setcurmode(sc, IEEE80211_MODE_11A);
+@@ -908,10 +928,6 @@ ath_attach(u_int16_t devid, struct net_d
+ IEEE80211_ATHC_COMP : 0);
+ #endif
+
+-#ifdef ATH_SUPERG_DYNTURBO
+- ic->ic_ath_cap |= (ath_hal_turboagsupported(ah, ath_countrycode) ?
+- (IEEE80211_ATHC_TURBOP | IEEE80211_ATHC_AR) : 0);
+-#endif
+ #ifdef ATH_SUPERG_XR
+ ic->ic_ath_cap |= (ath_hal_xrsupported(ah) ? IEEE80211_ATHC_XR : 0);
+ #endif
+@@ -4461,17 +4477,17 @@ ath_mode_init(struct net_device *dev)
+ * Set the slot time based on the current setting.
+ */
+ static void
+-ath_setslottime(struct ath_softc *sc)
++ath_settiming(struct ath_softc *sc)
+ {
+- struct ieee80211com *ic = &sc->sc_ic;
+ struct ath_hal *ah = sc->sc_ah;
++ u_int offset = getTimingOffset(sc);
+
+- if (sc->sc_slottimeconf > 0) /* manual override */
+- ath_hal_setslottime(ah, sc->sc_slottimeconf);
+- else if (ic->ic_flags & IEEE80211_F_SHSLOT)
+- ath_hal_setslottime(ah, HAL_SLOT_TIME_9);
+- else
+- ath_hal_setslottime(ah, HAL_SLOT_TIME_20);
++ if (sc->sc_slottimeconf > 0)
++ ath_hal_setslottime(ah, offset + sc->sc_slottimeconf);
++ if (sc->sc_acktimeconf > 0)
++ ath_hal_setacktimeout(ah, 2 * offset + sc->sc_acktimeconf);
++ if (sc->sc_ctstimeconf > 0)
++ ath_hal_setctstimeout(ah, 2 * offset + sc->sc_ctstimeconf);
+ sc->sc_updateslot = OK;
+ }
+
+@@ -4493,7 +4509,7 @@ ath_updateslot(struct net_device *dev)
+ if (ic->ic_opmode == IEEE80211_M_HOSTAP)
+ sc->sc_updateslot = UPDATE;
+ else if (dev->flags & IFF_RUNNING)
+- ath_setslottime(sc);
++ ath_settiming(sc);
+ }
+
+ #ifdef ATH_SUPERG_DYNTURBO
+@@ -5337,7 +5353,7 @@ ath_beacon_send(struct ath_softc *sc, in
+ sc->sc_updateslot = COMMIT; /* commit next beacon */
+ sc->sc_slotupdate = slot;
+ } else if ((sc->sc_updateslot == COMMIT) && (sc->sc_slotupdate == slot))
+- ath_setslottime(sc); /* commit change to hardware */
++ ath_settiming(sc); /* commit change to hardware */
+
+ if (bfaddr != 0) {
+ /*
+@@ -7790,12 +7806,14 @@ ath_get_ivlen(struct ieee80211_key *k)
+ * Get transmit rate index using rate in Kbps
+ */
+ static __inline int
+-ath_tx_findindex(const HAL_RATE_TABLE *rt, int rate)
++ath_tx_findindex(struct ath_softc *sc, const HAL_RATE_TABLE *rt, int rate)
+ {
+ unsigned int i, ndx = 0;
++ int f;
+
++ f = rate_factor(sc->sc_curmode);
+ for (i = 0; i < rt->rateCount; i++) {
+- if (rt->info[i].rateKbps == rate) {
++ if ((rt->info[i].rateKbps * f) == rate) {
+ ndx = i;
+ break;
+ }
+@@ -8088,7 +8106,7 @@ ath_tx_start(struct net_device *dev, str
+ atype = HAL_PKT_TYPE_NORMAL; /* default */
+
+ if (ismcast) {
+- rix = ath_tx_findindex(rt, vap->iv_mcast_rate);
++ rix = ath_tx_findindex(sc, rt, vap->iv_mcast_rate);
+ txrate = rt->info[rix].rateCode;
+ if (shortPreamble)
+ txrate |= rt->info[rix].shortPreamble;
+@@ -9055,7 +9073,7 @@ ath_chan_change(struct ath_softc *sc, st
+ struct net_device *dev = sc->sc_dev;
+ enum ieee80211_phymode mode;
+
+- mode = ieee80211_chan2mode(chan);
++ mode = ath_chan2mode(chan);
+
+ ath_rate_setup(dev, mode);
+ ath_setcurmode(sc, mode);
+@@ -10104,8 +10122,7 @@ ath_newassoc(struct ieee80211_node *ni,
+ }
+
+ static int
+-ath_getchannels(struct net_device *dev, u_int cc,
+- HAL_BOOL outdoor, HAL_BOOL xchanmode)
++ath_getchannels(struct net_device *dev)
+ {
+ struct ath_softc *sc = dev->priv;
+ struct ieee80211com *ic = &sc->sc_ic;
+@@ -10119,17 +10136,31 @@ ath_getchannels(struct net_device *dev,
+ EPRINTF(sc, "Insufficient memory for channel table!\n");
+ return -ENOMEM;
+ }
++
++restart:
+ if (!ath_hal_init_channels(ah, chans, IEEE80211_CHAN_MAX, &nchan,
+ ic->ic_regclassids, IEEE80211_REGCLASSIDS_MAX, &ic->ic_nregclass,
+- cc, HAL_MODE_ALL, outdoor, xchanmode)) {
++ ic->ic_country_code, HAL_MODE_ALL, ic->ic_country_outdoor, ath_xchanmode)) {
+ u_int32_t rd;
+
+ ath_hal_getregdomain(ah, &rd);
+ EPRINTF(sc, "Unable to collect channel list from HAL; "
+- "regdomain likely %u country code %u\n", rd, cc);
++ "regdomain likely %u country code %u\n", rd, ic->ic_country_code);
++ if ((ic->ic_country_code != CTRY_DEFAULT) ||
++ (ic->ic_country_outdoor != 0)) {
++ EPRINTF(sc, "Reverting to defaults\n");
++ ic->ic_country_code = CTRY_DEFAULT;
++ ic->ic_country_outdoor = 0;
++ goto restart;
++ }
+ kfree(chans);
+ return -EINVAL;
+ }
++#ifdef ATH_SUPERG_DYNTURBO
++ ic->ic_ath_cap &= ~(IEEE80211_ATHC_TURBOP | IEEE80211_ATHC_AR);
++ ic->ic_ath_cap |= (ath_hal_turboagsupported(ah, ic->ic_country_code) ?
++ (IEEE80211_ATHC_TURBOP | IEEE80211_ATHC_AR) : 0);
++#endif
+ /*
+ * Convert HAL channels to ieee80211 ones.
+ */
+@@ -10373,7 +10404,7 @@ ath_xr_rate_setup(struct net_device *dev
+ struct ieee80211com *ic = &sc->sc_ic;
+ const HAL_RATE_TABLE *rt;
+ struct ieee80211_rateset *rs;
+- unsigned int i, maxrates;
++ unsigned int i, j, maxrates;
+ sc->sc_xr_rates = ath_hal_getratetable(ah, HAL_MODE_XR);
+ rt = sc->sc_xr_rates;
+ if (rt == NULL)
+@@ -10386,57 +10417,16 @@ ath_xr_rate_setup(struct net_device *dev
+ } else
+ maxrates = rt->rateCount;
+ rs = &ic->ic_sup_xr_rates;
+- for (i = 0; i < maxrates; i++)
+- rs->rs_rates[i] = rt->info[i].dot11Rate;
+- rs->rs_nrates = maxrates;
++ for (j = 0, i = 0; i < maxrates; i++) {
++ if (!rt->info[i].valid)
++ continue;
++ rs->rs_rates[j++] = rt->info[i].dot11Rate;
++ }
++ rs->rs_nrates = j;
+ return 1;
+ }
+ #endif
+
+-/* Setup half/quarter rate table support */
+-static void
+-ath_setup_subrates(struct net_device *dev)
+-{
+- struct ath_softc *sc = dev->priv;
+- struct ath_hal *ah = sc->sc_ah;
+- struct ieee80211com *ic = &sc->sc_ic;
+- const HAL_RATE_TABLE *rt;
+- struct ieee80211_rateset *rs;
+- unsigned int i, maxrates;
+-
+- sc->sc_half_rates = ath_hal_getratetable(ah, HAL_MODE_11A_HALF_RATE);
+- rt = sc->sc_half_rates;
+- if (rt != NULL) {
+- if (rt->rateCount > IEEE80211_RATE_MAXSIZE) {
+- DPRINTF(sc, ATH_DEBUG_ANY,
+- "The rate table is too small (%u > %u)\n",
+- rt->rateCount, IEEE80211_RATE_MAXSIZE);
+- maxrates = IEEE80211_RATE_MAXSIZE;
+- } else
+- maxrates = rt->rateCount;
+- rs = &ic->ic_sup_half_rates;
+- for (i = 0; i < maxrates; i++)
+- rs->rs_rates[i] = rt->info[i].dot11Rate;
+- rs->rs_nrates = maxrates;
+- }
+-
+- sc->sc_quarter_rates = ath_hal_getratetable(ah, HAL_MODE_11A_QUARTER_RATE);
+- rt = sc->sc_quarter_rates;
+- if (rt != NULL) {
+- if (rt->rateCount > IEEE80211_RATE_MAXSIZE) {
+- DPRINTF(sc, ATH_DEBUG_ANY,
+- "The rate table is too small (%u > %u)\n",
+- rt->rateCount, IEEE80211_RATE_MAXSIZE);
+- maxrates = IEEE80211_RATE_MAXSIZE;
+- } else
+- maxrates = rt->rateCount;
+- rs = &ic->ic_sup_quarter_rates;
+- for (i = 0; i < maxrates; i++)
+- rs->rs_rates[i] = rt->info[i].dot11Rate;
+- rs->rs_nrates = maxrates;
+- }
+-}
+-
+ static int
+ ath_rate_setup(struct net_device *dev, u_int mode)
+ {
+@@ -10445,7 +10435,7 @@ ath_rate_setup(struct net_device *dev, u
+ struct ieee80211com *ic = &sc->sc_ic;
+ const HAL_RATE_TABLE *rt;
+ struct ieee80211_rateset *rs;
+- unsigned int i, maxrates;
++ unsigned int i, j, maxrates, f;
+
+ switch (mode) {
+ case IEEE80211_MODE_11A:
+@@ -10463,6 +10453,12 @@ ath_rate_setup(struct net_device *dev, u
+ case IEEE80211_MODE_TURBO_G:
+ sc->sc_rates[mode] = ath_hal_getratetable(ah, HAL_MODE_108G);
+ break;
++ case ATH_MODE_HALF:
++ sc->sc_rates[mode] = ath_hal_getratetable(ah, HAL_MODE_11A_HALF_RATE);
++ break;
++ case ATH_MODE_QUARTER:
++ sc->sc_rates[mode] = ath_hal_getratetable(ah, HAL_MODE_11A_QUARTER_RATE);
++ break;
+ default:
+ DPRINTF(sc, ATH_DEBUG_ANY, "Invalid mode %u\n", mode);
+ return 0;
+@@ -10477,10 +10473,16 @@ ath_rate_setup(struct net_device *dev, u
+ maxrates = IEEE80211_RATE_MAXSIZE;
+ } else
+ maxrates = rt->rateCount;
++
++ /* NB: quarter/half rate channels hijack the 11A rateset */
++ if (mode >= IEEE80211_MODE_MAX)
++ return 1;
++
+ rs = &ic->ic_sup_rates[mode];
+ for (i = 0; i < maxrates; i++)
+ rs->rs_rates[i] = rt->info[i].dot11Rate;
+ rs->rs_nrates = maxrates;
++
+ return 1;
+ }
+
+@@ -10509,13 +10511,18 @@ ath_setcurmode(struct ath_softc *sc, enu
+ { 0, 500, 130 },
+ };
+ const HAL_RATE_TABLE *rt;
+- unsigned int i, j;
++ unsigned int i, j, f;
+
++ /*
++ * NB: Fix up rixmap. HAL returns half or quarter dot11Rates,
++ * while the stack deals with full rates only
++ */
++ f = rate_factor(mode);
+ memset(sc->sc_rixmap, 0xff, sizeof(sc->sc_rixmap));
+ rt = sc->sc_rates[mode];
+ KASSERT(rt != NULL, ("no h/w rate set for phy mode %u", mode));
+ for (i = 0; i < rt->rateCount; i++)
+- sc->sc_rixmap[rt->info[i].dot11Rate & IEEE80211_RATE_VAL] = i;
++ sc->sc_rixmap[rate_hal2ieee(rt->info[i].dot11Rate, f) & IEEE80211_RATE_VAL] = i;
+ memset(sc->sc_hwmap, 0, sizeof(sc->sc_hwmap));
+ for (i = 0; i < 32; i++) {
+ u_int8_t ix = rt->rateCodeToIndex[i];
+@@ -10525,7 +10532,7 @@ ath_setcurmode(struct ath_softc *sc, enu
+ continue;
+ }
+ sc->sc_hwmap[i].ieeerate =
+- rt->info[ix].dot11Rate & IEEE80211_RATE_VAL;
++ rate_hal2ieee(rt->info[ix].dot11Rate, f) & IEEE80211_RATE_VAL;
+ if (rt->info[ix].shortPreamble ||
+ rt->info[ix].phy == IEEE80211_T_OFDM)
+ sc->sc_hwmap[i].flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
+@@ -10926,9 +10933,106 @@ enum {
+ ATH_MAXVAPS = 26,
+ ATH_INTMIT = 27,
+ ATH_NOISE_IMMUNITY = 28,
+- ATH_OFDM_WEAK_DET = 29
++ ATH_OFDM_WEAK_DET = 29,
++ ATH_CHANBW = 30,
++ ATH_OUTDOOR = 31,
+ };
+
++/*
++ * perform the channel related sysctl, reload the channel list
++ * and try to stay on the current frequency
++ */
++static int ath_sysctl_setchanparam(struct ath_softc *sc, unsigned long ctl, u_int val)
++{
++ struct ieee80211com *ic = &sc->sc_ic;
++ struct ath_hal *ah = sc->sc_ah;
++ struct ieee80211_channel *c = NULL;
++ struct ieee80211vap *vap;
++ u_int16_t freq = 0;
++ struct ifreq ifr;
++
++ if (ic->ic_curchan != IEEE80211_CHAN_ANYC)
++ freq = ic->ic_curchan->ic_freq;
++
++ switch(ctl) {
++ case ATH_COUNTRYCODE:
++ ic->ic_country_code = val;
++ break;
++ case ATH_OUTDOOR:
++ ic->ic_country_outdoor = val;
++ break;
++ case ATH_CHANBW:
++ switch(val) {
++ case 0:
++ case 5:
++ case 10:
++ case 20:
++ case 40:
++ if (ath_hal_setcapability(ah, HAL_CAP_CHANBW, 1, val, NULL) == AH_TRUE) {
++ sc->sc_chanbw = val;
++ break;
++ }
++ default:
++ return -EINVAL;
++ }
++ break;
++ }
++
++ if (ic->ic_curchan != IEEE80211_CHAN_ANYC)
++ freq = ic->ic_curchan->ic_freq;
++
++ /* clear out any old state */
++ TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
++ vap->iv_des_mode = IEEE80211_MODE_AUTO;
++ vap->iv_des_chan = IEEE80211_CHAN_ANYC;
++ }
++ ieee80211_scan_flush(ic);
++
++ IEEE80211_LOCK_IRQ(ic);
++ ath_getchannels(sc->sc_dev);
++ ieee80211_update_channels(ic, 0);
++ if (freq)
++ c = ieee80211_find_channel(ic, freq, IEEE80211_MODE_AUTO);
++ if (!c)
++ c = &ic->ic_channels[0];
++ ic->ic_curchan = c;
++ ic->ic_bsschan = c;
++ ic->ic_curmode = IEEE80211_MODE_AUTO;
++ IEEE80211_UNLOCK_IRQ(ic);
++
++ if (!(sc->sc_dev->flags & IFF_RUNNING)) {
++ ic->ic_bsschan = IEEE80211_CHAN_ANYC;
++ return 0;
++ }
++
++#ifndef ifr_media
++#define ifr_media ifr_ifru.ifru_ivalue
++#endif
++ memset(&ifr, 0, sizeof(ifr));
++ ifr.ifr_media = ic->ic_media.ifm_cur->ifm_media & ~IFM_MMASK;
++ ifr.ifr_media |= IFM_MAKEMODE(IEEE80211_MODE_AUTO);
++ ifmedia_ioctl(ic->ic_dev, &ifr, &ic->ic_media, SIOCSIFMEDIA);
++
++ /* apply the channel to the hw */
++ ath_set_channel(ic);
++
++ TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
++ struct net_device *dev = vap->iv_dev;
++
++ /* reactivate all active vaps */
++ vap->iv_state = IEEE80211_S_SCAN;
++ if ((vap->iv_opmode == IEEE80211_M_HOSTAP) ||
++ (vap->iv_opmode == IEEE80211_M_MONITOR) ||
++ (vap->iv_opmode == IEEE80211_M_WDS))
++ ieee80211_new_state(vap, IEEE80211_S_RUN, 0);
++ else
++ ieee80211_new_state(vap, IEEE80211_S_INIT, -1);
++ }
++
++ return 0;
++}
++
++
+ static int
+ ath_sysctl_set_intmit(struct ath_softc *sc, long ctl, u_int val)
+ {
+@@ -11007,6 +11111,7 @@ static int
+ ATH_SYSCTL_DECL(ath_sysctl_halparam, ctl, write, filp, buffer, lenp, ppos)
+ {
+ struct ath_softc *sc = ctl->extra1;
++ struct ieee80211com *ic = &sc->sc_ic;
+ struct ath_hal *ah = sc->sc_ah;
+ u_int val;
+ u_int tab_3_val[3];
+@@ -11030,25 +11135,33 @@ ATH_SYSCTL_DECL(ath_sysctl_halparam, ctl
+ lenp, ppos);
+ if (ret == 0) {
+ switch ((long)ctl->extra2) {
++ case ATH_REGDOMAIN:
++ ath_hal_setregdomain(ah, val);
++ break;
++ case ATH_COUNTRYCODE:
++ case ATH_CHANBW:
++ ret = ath_sysctl_setchanparam(sc, (long) ctl->extra2, val);
++ break;
+ case ATH_SLOTTIME:
+- if (val > 0) {
+- if (!ath_hal_setslottime(ah, val))
+- ret = -EINVAL;
+- else
+- sc->sc_slottimeconf = val;
+- } else {
+- /* disable manual override */
++ if (val > 0)
++ sc->sc_slottimeconf = val;
++ else
+ sc->sc_slottimeconf = 0;
+- ath_setslottime(sc);
+- }
++ ath_settiming(sc);
+ break;
+ case ATH_ACKTIMEOUT:
+- if (!ath_hal_setacktimeout(ah, val))
+- ret = -EINVAL;
++ if (val > 0)
++ sc->sc_acktimeconf = val;
++ else
++ sc->sc_acktimeconf = 0;
++ ath_settiming(sc);
+ break;
+ case ATH_CTSTIMEOUT:
+- if (!ath_hal_setctstimeout(ah, val))
+- ret = -EINVAL;
++ if (val > 0)
++ sc->sc_ctstimeconf = val;
++ else
++ sc->sc_ctstimeconf = 0;
++ ath_settiming(sc);
+ break;
+ case ATH_SOFTLED:
+ if (val != sc->sc_softled) {
+@@ -11201,6 +11314,9 @@ ATH_SYSCTL_DECL(ath_sysctl_halparam, ctl
+ }
+ } else {
+ switch ((long)ctl->extra2) {
++ case ATH_CHANBW:
++ val = sc->sc_chanbw ?: 20;
++ break;
+ case ATH_SLOTTIME:
+ val = ath_hal_getslottime(ah);
+ break;
+@@ -11219,6 +11335,9 @@ ATH_SYSCTL_DECL(ath_sysctl_halparam, ctl
+ case ATH_COUNTRYCODE:
+ ath_hal_getcountrycode(ah, &val);
+ break;
++ case ATH_OUTDOOR:
++ val = ic->ic_country_outdoor;
++ break;
+ case ATH_MAXVAPS:
+ val = ath_maxvaps;
+ break;
+@@ -11332,11 +11451,17 @@ static const ctl_table ath_sysctl_templa
+ },
+ { .ctl_name = CTL_AUTO,
+ .procname = "countrycode",
+- .mode = 0444,
++ .mode = 0644,
+ .proc_handler = ath_sysctl_halparam,
+ .extra2 = (void *)ATH_COUNTRYCODE,
+ },
+ { .ctl_name = CTL_AUTO,
++ .procname = "outdoor",
++ .mode = 0644,
++ .proc_handler = ath_sysctl_halparam,
++ .extra2 = (void *)ATH_OUTDOOR,
++ },
++ { .ctl_name = CTL_AUTO,
+ .procname = "maxvaps",
+ .mode = 0444,
+ .proc_handler = ath_sysctl_halparam,
+@@ -11344,7 +11469,7 @@ static const ctl_table ath_sysctl_templa
+ },
+ { .ctl_name = CTL_AUTO,
+ .procname = "regdomain",
+- .mode = 0444,
++ .mode = 0644,
+ .proc_handler = ath_sysctl_halparam,
+ .extra2 = (void *)ATH_REGDOMAIN,
+ },
+@@ -11407,6 +11532,12 @@ static const ctl_table ath_sysctl_templa
+ .extra2 = (void *)ATH_ACKRATE,
+ },
+ { .ctl_name = CTL_AUTO,
++ .procname = "channelbw",
++ .mode = 0644,
++ .proc_handler = ath_sysctl_halparam,
++ .extra2 = (void *)ATH_CHANBW,
++ },
++ { .ctl_name = CTL_AUTO,
+ .procname = "rp",
+ .mode = 0200,
+ .proc_handler = ath_sysctl_halparam,
+@@ -11647,13 +11778,6 @@ static ctl_table ath_static_sysctls[] =
+ },
+ #endif
+ { .ctl_name = CTL_AUTO,
+- .procname = "countrycode",
+- .mode = 0444,
+- .data = &ath_countrycode,
+- .maxlen = sizeof(ath_countrycode),
+- .proc_handler = proc_dointvec
+- },
+- { .ctl_name = CTL_AUTO,
+ .procname = "maxvaps",
+ .mode = 0444,
+ .data = &ath_maxvaps,
+@@ -11661,13 +11785,6 @@ static ctl_table ath_static_sysctls[] =
+ .proc_handler = proc_dointvec
+ },
+ { .ctl_name = CTL_AUTO,
+- .procname = "outdoor",
+- .mode = 0444,
+- .data = &ath_outdoor,
+- .maxlen = sizeof(ath_outdoor),
+- .proc_handler = proc_dointvec
+- },
+- { .ctl_name = CTL_AUTO,
+ .procname = "xchanmode",
+ .mode = 0444,
+ .data = &ath_xchanmode,
+--- a/ath/if_athvar.h
++++ b/ath/if_athvar.h
+@@ -688,16 +688,17 @@ struct ath_softc {
+ int8_t sc_ofdm_weak_det; /* OFDM weak frames detection, -1 == auto */
+
+ /* rate tables */
+- const HAL_RATE_TABLE *sc_rates[IEEE80211_MODE_MAX];
++#define ATH_MODE_HALF (IEEE80211_MODE_MAX)
++#define ATH_MODE_QUARTER (IEEE80211_MODE_MAX + 1)
++ const HAL_RATE_TABLE *sc_rates[IEEE80211_MODE_MAX + 2];
+ const HAL_RATE_TABLE *sc_currates; /* current rate table */
+ const HAL_RATE_TABLE *sc_xr_rates; /* XR rate table */
+- const HAL_RATE_TABLE *sc_half_rates; /* half rate table */
+- const HAL_RATE_TABLE *sc_quarter_rates; /* quarter rate table */
+ HAL_OPMODE sc_opmode; /* current hal operating mode */
+ enum ieee80211_phymode sc_curmode; /* current phy mode */
+ u_int16_t sc_curtxpow; /* current tx power limit */
+ u_int16_t sc_curaid; /* current association id */
+ HAL_CHANNEL sc_curchan; /* current h/w channel */
++ u_int8_t sc_chanbw; /* channel bandwidth */
+ u_int8_t sc_curbssid[IEEE80211_ADDR_LEN];
+ u_int8_t sc_rixmap[256]; /* IEEE to h/w rate table ix */
+ struct {
+@@ -808,6 +809,8 @@ struct ath_softc {
+ u_int32_t sc_dturbo_bw_turbo; /* bandwidth threshold */
+ #endif
+ u_int sc_slottimeconf; /* manual override for slottime */
++ u_int sc_acktimeconf; /* manual override for acktime */
++ u_int sc_ctstimeconf; /* manual override for ctstime */
+
+ struct timer_list sc_dfs_excl_timer; /* mark expiration timer task */
+ struct timer_list sc_dfs_cac_timer; /* dfs wait timer */
+@@ -826,6 +829,7 @@ struct ath_softc {
+ int sc_rp_num;
+ int sc_rp_min;
+ HAL_BOOL (*sc_rp_analyse)(struct ath_softc *sc);
++ struct ATH_TQ_STRUCT sc_refresh_tq;
+ struct ATH_TQ_STRUCT sc_rp_tq;
+
+ int sc_rp_ignored; /* if set, we ignored all
+@@ -941,6 +945,48 @@ int ar_device(int devid);
+ DEV_NAME(_v->iv_ic->ic_dev))
+
+ void ath_radar_detected(struct ath_softc *sc, const char* message);
++static inline u_int getTimingOffset(struct ath_softc *sc)
++{
++ struct ieee80211com *ic = &sc->sc_ic;
++ u_int usec = 9;
++ if (IEEE80211_IS_CHAN_ANYG(ic->ic_curchan)) {
++ usec = 20;
++ if (ic->ic_flags & IEEE80211_F_SHSLOT)
++ usec = 9;
++ } else if (IEEE80211_IS_CHAN_A(ic->ic_curchan))
++ usec = 9;
++
++ if (IEEE80211_IS_CHAN_TURBO(ic->ic_curchan))
++ usec = 6;
++
++ if (IEEE80211_IS_CHAN_HALF(ic->ic_curchan))
++ usec = 13;
++ else if (IEEE80211_IS_CHAN_QUARTER(ic->ic_curchan))
++ usec = 21;
++ return usec;
++}
++
++static inline void ath_get_timings(struct ath_softc *sc, u_int *t_slot, u_int *t_sifs, u_int *t_difs)
++{
++ struct ieee80211_channel *c = sc->sc_ic.ic_curchan;
++
++ *t_slot = getTimingOffset(sc) + sc->sc_slottimeconf;
++
++ if (IEEE80211_IS_CHAN_HALF(c)) {
++ *t_sifs = 32;
++ *t_difs = 56;
++ } else if (IEEE80211_IS_CHAN_QUARTER(c)) {
++ *t_sifs = 64;
++ *t_difs = 112;
++ } else if (IEEE80211_IS_CHAN_TURBO(c)) {
++ *t_sifs = 8;
++ *t_difs = 28;
++ } else {
++ *t_sifs = 16;
++ *t_difs = 28;
++ }
++}
++
+
+ struct ath_hw_detect {
+ const char *vendor_name;
+--- a/tools/athctrl.c
++++ b/tools/athctrl.c
+@@ -118,7 +118,7 @@ CMD(athctrl)(int argc, char *argv[])
+ }
+
+ if (distance >= 0) {
+- int slottime = 9 + (distance / 300) + ((distance % 300) ? 1 : 0);
++ int slottime = (distance / 300) + ((distance % 300) ? 1 : 0);
+ int acktimeout = slottime * 2 + 3;
+ int ctstimeout = slottime * 2 + 3;
+
+--- a/net80211/ieee80211.c
++++ b/net80211/ieee80211.c
+@@ -243,34 +243,17 @@ static const struct country_code_to_str
+ {CTRY_ZIMBABWE, "ZW"}
+ };
+
+-int
+-ieee80211_ifattach(struct ieee80211com *ic)
++void ieee80211_update_channels(struct ieee80211com *ic, int init)
+ {
+- struct net_device *dev = ic->ic_dev;
+ struct ieee80211_channel *c;
++ struct ieee80211vap *vap;
+ struct ifmediareq imr;
++ int ext = 0;
+ int i;
+
+- _MOD_INC_USE(THIS_MODULE, return -ENODEV);
+-
+- /*
+- * Pick an initial operating mode until we have a vap
+- * created to lock it down correctly. This is only
+- * drivers have something defined for configuring the
+- * hardware at startup.
+- */
+- ic->ic_opmode = IEEE80211_M_STA; /* everyone supports this */
+-
+- /*
+- * Fill in 802.11 available channel set, mark
+- * all available channels as active, and pick
+- * a default channel if not already specified.
+- */
+- KASSERT(0 < ic->ic_nchans && ic->ic_nchans < IEEE80211_CHAN_MAX,
+- ("invalid number of channels specified: %u", ic->ic_nchans));
+ memset(ic->ic_chan_avail, 0, sizeof(ic->ic_chan_avail));
+- ic->ic_modecaps |= 1 << IEEE80211_MODE_AUTO;
+ ic->ic_max_txpower = IEEE80211_TXPOWER_MIN;
++ ic->ic_modecaps = 1 << IEEE80211_MODE_AUTO;
+
+ for (i = 0; i < ic->ic_nchans; i++) {
+ c = &ic->ic_channels[i];
+@@ -298,6 +281,8 @@ ieee80211_ifattach(struct ieee80211com *
+ ic->ic_modecaps |= 1 << IEEE80211_MODE_TURBO_A;
+ if (IEEE80211_IS_CHAN_108G(c))
+ ic->ic_modecaps |= 1 << IEEE80211_MODE_TURBO_G;
++ if (IEEE80211_IS_CHAN_HALF(c) || IEEE80211_IS_CHAN_QUARTER(c))
++ ext = 1;
+ }
+ /* Initialize candidate channels to all available */
+ memcpy(ic->ic_chan_active, ic->ic_chan_avail,
+@@ -311,11 +296,58 @@ ieee80211_ifattach(struct ieee80211com *
+ * When 11g is supported, force the rate set to
+ * include basic rates suitable for a mixed b/g bss.
+ */
+- if (ic->ic_modecaps & (1 << IEEE80211_MODE_11G))
++ if ((ic->ic_modecaps & (1 << IEEE80211_MODE_11G)) && !ext)
+ ieee80211_set11gbasicrates(
+ &ic->ic_sup_rates[IEEE80211_MODE_11G],
+ IEEE80211_MODE_11G);
+
++ if (init)
++ return;
++
++ ieee80211_media_setup(ic, &ic->ic_media, ic->ic_caps, NULL, NULL);
++ ieee80211com_media_status(ic->ic_dev, &imr);
++ ifmedia_set(&ic->ic_media, imr.ifm_active);
++
++ TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next) {
++ struct ieee80211vap *avp;
++ TAILQ_FOREACH(avp, &vap->iv_wdslinks, iv_wdsnext) {
++ (void) ieee80211_media_setup(ic, &vap->iv_media, vap->iv_caps, NULL, NULL);
++ ieee80211_media_status(vap->iv_dev, &imr);
++ ifmedia_set(&vap->iv_media, imr.ifm_active);
++ }
++ (void) ieee80211_media_setup(ic, &vap->iv_media, vap->iv_caps, NULL, NULL);
++ ieee80211_media_status(vap->iv_dev, &imr);
++ ifmedia_set(&vap->iv_media, imr.ifm_active);
++ }
++}
++EXPORT_SYMBOL(ieee80211_update_channels);
++
++int
++ieee80211_ifattach(struct ieee80211com *ic)
++{
++ struct net_device *dev = ic->ic_dev;
++ struct ieee80211_channel *c;
++ struct ifmediareq imr;
++
++ _MOD_INC_USE(THIS_MODULE, return -ENODEV);
++
++ /*
++ * Pick an initial operating mode until we have a vap
++ * created to lock it down correctly. This is only
++ * drivers have something defined for configuring the
++ * hardware at startup.
++ */
++ ic->ic_opmode = IEEE80211_M_STA; /* everyone supports this */
++
++ /*
++ * Fill in 802.11 available channel set, mark
++ * all available channels as active, and pick
++ * a default channel if not already specified.
++ */
++ KASSERT(0 < ic->ic_nchans && ic->ic_nchans < IEEE80211_CHAN_MAX,
++ ("invalid number of channels specified: %u", ic->ic_nchans));
++ ieee80211_update_channels(ic, 1);
++
+ /* Setup initial channel settings */
+ ic->ic_bsschan = IEEE80211_CHAN_ANYC;
+ /* Arbitrarily pick the first channel */
+@@ -327,6 +359,7 @@ ieee80211_ifattach(struct ieee80211com *
+ /* Enable WME by default, if we're capable. */
+ if (ic->ic_caps & IEEE80211_C_WME)
+ ic->ic_flags |= IEEE80211_F_WME;
++
+ (void) ieee80211_setmode(ic, ic->ic_curmode);
+
+ /* Store default beacon interval, as nec. */
+@@ -763,7 +796,8 @@ ieee80211_media_setup(struct ieee80211co
+ struct ieee80211_rateset allrates;
+
+ /* Fill in media characteristics. */
+- ifmedia_init(media, 0, media_change, media_stat);
++ if (media_change || media_stat)
++ ifmedia_init(media, 0, media_change, media_stat);
+ maxrate = 0;
+ memset(&allrates, 0, sizeof(allrates));
+
+@@ -793,7 +827,7 @@ ieee80211_media_setup(struct ieee80211co
+ ADD(media, IFM_AUTO, mopt | IFM_IEEE80211_WDS);
+ if (mode == IEEE80211_MODE_AUTO)
+ continue;
+- rs = &ic->ic_sup_rates[mode];
++ rs = &ic->ic_sup_rates[ieee80211_chan2ratemode(ic->ic_curchan, mode)];
+
+ for (i = 0; i < rs->rs_nrates; i++) {
+ rate = rs->rs_rates[i];
+@@ -1207,7 +1241,7 @@ ieee80211_announce(struct ieee80211com *
+ if ((ic->ic_modecaps & (1 << mode)) == 0)
+ continue;
+ if_printf(dev, "%s rates: ", ieee80211_phymode_name[mode]);
+- rs = &ic->ic_sup_rates[mode];
++ rs = &ic->ic_sup_rates[ieee80211_chan2ratemode(ic->ic_curchan, mode)];
+ for (i = 0; i < rs->rs_nrates; i++) {
+ rate = rs->rs_rates[i];
+ mword = ieee80211_rate2media(ic, rate, mode);
+@@ -1417,7 +1451,7 @@ ieee80211com_media_change(struct net_dev
+ * now so drivers have a consistent state.
+ */
+ KASSERT(vap->iv_bss != NULL, ("no bss node"));
+- vap->iv_bss->ni_rates = ic->ic_sup_rates[newphymode];
++ vap->iv_bss->ni_rates = ic->ic_sup_rates[ieee80211_chan2ratemode(ic->ic_curchan, newphymode)];
+ }
+ error = -ENETRESET;
+ }
+@@ -1435,7 +1469,7 @@ findrate(struct ieee80211com *ic, enum i
+ {
+ #define IEEERATE(_ic,_m,_i) \
+ ((_ic)->ic_sup_rates[_m].rs_rates[_i] & IEEE80211_RATE_VAL)
+- int i, nrates = ic->ic_sup_rates[mode].rs_nrates;
++ int i, nrates = ic->ic_sup_rates[ieee80211_chan2ratemode(ic->ic_curchan, mode)].rs_nrates;
+ for (i = 0; i < nrates; i++)
+ if (IEEERATE(ic, mode, i) == rate)
+ return i;
+@@ -1877,11 +1911,6 @@ ieee80211_build_countryie(struct ieee802
+ if (ieee80211_chan2mode(c) != curmode_noturbo)
+ continue;
+
+- /* Skip half/quarter rate channels */
+- if (IEEE80211_IS_CHAN_HALF(c) ||
+- IEEE80211_IS_CHAN_QUARTER(c))
+- continue;
+-
+ if (*cur_runlen == 0) {
+ (*cur_runlen)++;
+ *cur_pow = c->ic_maxregpower;
+@@ -1915,7 +1944,7 @@ void
+ ieee80211_build_sc_ie(struct ieee80211com *ic)
+ {
+ struct ieee80211_ie_sc *ie = &ic->ic_sc_ie;
+- int i, j;
++ int i, j, k;
+ struct ieee80211_channel *c;
+ u_int8_t prevchan;
+
+--- a/net80211/ieee80211_var.h
++++ b/net80211/ieee80211_var.h
+@@ -336,8 +336,6 @@ struct ieee80211com {
+ u_int8_t ic_nopened; /* VAPs been opened */
+ struct ieee80211_rateset ic_sup_rates[IEEE80211_MODE_MAX];
+ struct ieee80211_rateset ic_sup_xr_rates;
+- struct ieee80211_rateset ic_sup_half_rates;
+- struct ieee80211_rateset ic_sup_quarter_rates;
+ u_int16_t ic_modecaps; /* set of mode capabilities */
+ u_int16_t ic_curmode; /* current mode */
+ u_int16_t ic_lintval; /* beacon interval */
+@@ -715,6 +713,7 @@ MALLOC_DECLARE(M_80211_VAP);
+
+ int ieee80211_ifattach(struct ieee80211com *);
+ void ieee80211_ifdetach(struct ieee80211com *);
++void ieee80211_update_channels(struct ieee80211com *ic, int);
+ int ieee80211_vap_setup(struct ieee80211com *, struct net_device *,
+ const char *, int, int, struct ieee80211vap *);
+ int ieee80211_vap_attach(struct ieee80211vap *, ifm_change_cb_t, ifm_stat_cb_t);
+@@ -794,6 +793,23 @@ ieee80211_anyhdrspace(struct ieee80211co
+ return size;
+ }
+
++static __inline int
++ieee80211_chan2ratemode(struct ieee80211_channel *c, int mode)
++{
++ if (mode == -1)
++ mode = ieee80211_chan2mode(c);
++
++ /*
++ * Use 11a rateset for half/quarter to restrict things
++ * to pure OFDM
++ */
++ if (IEEE80211_IS_CHAN_HALF(c) ||
++ IEEE80211_IS_CHAN_QUARTER(c))
++ return IEEE80211_MODE_11A;
++
++ return mode;
++}
++
+ /* Macros to print MAC address used in 802.11 headers */
+
+ #define MAC_FMT "%02x:%02x:%02x:%02x:%02x:%02x"
+--- a/net80211/ieee80211_node.c
++++ b/net80211/ieee80211_node.c
+@@ -287,7 +287,7 @@ ieee80211_node_set_chan(struct ieee80211
+ ni->ni_rates = ic->ic_sup_xr_rates;
+ else
+ #endif
+- ni->ni_rates = ic->ic_sup_rates[ieee80211_chan2mode(chan)];
++ ni->ni_rates = ic->ic_sup_rates[ieee80211_chan2ratemode(chan, -1)];
+ }
+
+ static __inline void
+@@ -387,6 +387,8 @@ ieee80211_create_ibss(struct ieee80211va
+ ic->ic_bsschan = chan;
+ ieee80211_node_set_chan(ic, ni);
+ ic->ic_curmode = ieee80211_chan2mode(chan);
++ ni->ni_rates = ic->ic_sup_rates[ieee80211_chan2ratemode(chan, -1)];
++
+ spin_lock_irqsave(&channel_lock, flags);
+ ieee80211_scan_set_bss_channel(ic, ic->ic_bsschan);
+ spin_unlock_irqrestore(&channel_lock, flags);
+@@ -394,14 +396,8 @@ ieee80211_create_ibss(struct ieee80211va
+ /* Update country ie information */
+ ieee80211_build_countryie(ic);
+
+- if (IEEE80211_IS_CHAN_HALF(chan)) {
+- ni->ni_rates = ic->ic_sup_half_rates;
+- } else if (IEEE80211_IS_CHAN_QUARTER(chan)) {
+- ni->ni_rates = ic->ic_sup_quarter_rates;
+- }
+-
+- if ((vap->iv_flags & IEEE80211_F_PUREG) &&
+- IEEE80211_IS_CHAN_ANYG(chan)) {
++ if ((ieee80211_chan2ratemode(chan, -1) != IEEE80211_MODE_11A) &&
++ IEEE80211_IS_CHAN_ANYG(chan) && (vap->iv_flags & IEEE80211_F_PUREG)) {
+ ieee80211_setpuregbasicrates(&ni->ni_rates);
+ }
+
+--- a/net80211/ieee80211_scan_sta.c
++++ b/net80211/ieee80211_scan_sta.c
+@@ -490,12 +490,7 @@ check_rate(struct ieee80211vap *vap, con
+
+ okrate = badrate = fixedrate = 0;
+
+- if (IEEE80211_IS_CHAN_HALF(se->se_chan))
+- srs = &ic->ic_sup_half_rates;
+- else if (IEEE80211_IS_CHAN_QUARTER(se->se_chan))
+- srs = &ic->ic_sup_quarter_rates;
+- else
+- srs = &ic->ic_sup_rates[ieee80211_chan2mode(se->se_chan)];
++ srs = &ic->ic_sup_rates[ieee80211_chan2ratemode(ic->ic_curchan, -1)];
+ nrs = se->se_rates[1];
+ rs = se->se_rates + 2;
+ fixedrate = IEEE80211_FIXED_RATE_NONE;
+--- a/net80211/ieee80211_output.c
++++ b/net80211/ieee80211_output.c
+@@ -1676,8 +1676,8 @@ ieee80211_send_probereq(struct ieee80211
+
+ frm = ieee80211_add_ssid(frm, ssid, ssidlen);
+ mode = ieee80211_chan2mode(ic->ic_curchan);
+- frm = ieee80211_add_rates(frm, &ic->ic_sup_rates[mode]);
+- frm = ieee80211_add_xrates(frm, &ic->ic_sup_rates[mode]);
++ frm = ieee80211_add_rates(frm, &ic->ic_sup_rates[ieee80211_chan2ratemode(ic->ic_curchan, mode)]);
++ frm = ieee80211_add_xrates(frm, &ic->ic_sup_rates[ieee80211_chan2ratemode(ic->ic_curchan, mode)]);
+
+ if (optie != NULL) {
+ memcpy(frm, optie, optielen);
+--- a/net80211/ieee80211_proto.c
++++ b/net80211/ieee80211_proto.c
+@@ -404,7 +404,7 @@ ieee80211_fix_rate(struct ieee80211_node
+
+ error = 0;
+ okrate = badrate = fixedrate = 0;
+- srs = &ic->ic_sup_rates[ieee80211_chan2mode(ni->ni_chan)];
++ srs = &ic->ic_sup_rates[ieee80211_chan2ratemode(ic->ic_curchan, -1)];
+ nrs = &ni->ni_rates;
+ fixedrate = IEEE80211_FIXED_RATE_NONE;
+ for (i = 0; i < nrs->rs_nrates;) {
+@@ -1401,6 +1401,7 @@ ieee80211_new_state(struct ieee80211vap
+ IEEE80211_VAPS_UNLOCK_IRQ(ic);
+ return rc;
+ }
++EXPORT_SYMBOL(ieee80211_new_state);
+
+ static int
+ __ieee80211_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
+--- a/ath_rate/minstrel/minstrel.c
++++ b/ath_rate/minstrel/minstrel.c
+@@ -195,31 +195,7 @@ calc_usecs_unicast_packet(struct ath_sof
+ return 0;
+ }
+
+- /* XXX: Getting MAC/PHY level timings should be fixed for turbo
+- * rates, and there is probably a way to get this from the
+- * HAL... */
+- switch (rt->info[rix].phy) {
+- case IEEE80211_T_OFDM:
+-#if 0
+- t_slot = 9;
+- t_sifs = 16;
+- t_difs = 28;
+- /* fall through */
+-#endif
+- case IEEE80211_T_TURBO:
+- t_slot = 9;
+- t_sifs = 8;
+- t_difs = 28;
+- break;
+- case IEEE80211_T_DS:
+- /* Fall through to default */
+- default:
+- /* pg. 205 ieee.802.11.pdf */
+- t_slot = 20;
+- t_difs = 50;
+- t_sifs = 10;
+- }
+-
++ ath_get_timings(sc, &t_slot, &t_sifs, &t_difs);
+ if ((ic->ic_flags & IEEE80211_F_USEPROT) &&
+ (rt->info[rix].phy == IEEE80211_T_OFDM)) {
+ if (ic->ic_protmode == IEEE80211_PROT_RTSCTS)
+--- a/ath_rate/sample/sample.c
++++ b/ath_rate/sample/sample.c
+@@ -172,26 +172,7 @@ calc_usecs_unicast_packet(struct ath_sof
+ * rates, and there is probably a way to get this from the
+ * hal...
+ */
+- switch (rt->info[rix].phy) {
+- case IEEE80211_T_OFDM:
+- t_slot = 9;
+- t_sifs = 16;
+- t_difs = 28;
+- /* fall through */
+- case IEEE80211_T_TURBO:
+- t_slot = 9;
+- t_sifs = 8;
+- t_difs = 28;
+- break;
+- case IEEE80211_T_DS:
+- /* fall through to default */
+- default:
+- /* pg 205 ieee.802.11.pdf */
+- t_slot = 20;
+- t_difs = 50;
+- t_sifs = 10;
+- }
+-
++ ath_get_timings(sc, &t_slot, &t_sifs, &t_difs);
+ rts = cts = 0;
+
+ if ((ic->ic_flags & IEEE80211_F_USEPROT) &&
+--- a/net80211/ieee80211_wireless.c
++++ b/net80211/ieee80211_wireless.c
+@@ -2133,7 +2133,7 @@ ieee80211_ioctl_setmode(struct net_devic
+
+ vap->iv_des_mode = mode;
+ if (IS_UP_AUTO(vap))
+- ieee80211_new_state(vap, IEEE80211_S_SCAN, 0);
++ ieee80211_init(vap->iv_dev, 0);
+
+ retv = 0;
+ }
+@@ -4081,46 +4081,60 @@ ieee80211_ioctl_getchanlist(struct net_d
+ return 0;
+ }
+
++static int alreadyListed(struct ieee80211req_chaninfo *chans, u_int16_t mhz)
++{
++ int i;
++ for (i = 0; i < chans->ic_nchans; i++) {
++ if (chans->ic_chans[i].ic_freq == mhz)
++ return 1;
++ }
++ return 0;
++}
++
+ static int
+ ieee80211_ioctl_getchaninfo(struct net_device *dev,
+- struct iw_request_info *info, void *w, char *extra)
++ struct iw_request_info *info, void *w, char *extra)
+ {
+ struct ieee80211vap *vap = dev->priv;
+ struct ieee80211com *ic = vap->iv_ic;
+- struct ieee80211req_chaninfo chans;
++ struct ieee80211req_chaninfo *chans =
++ (struct ieee80211req_chaninfo *)extra;
++
+ u_int8_t reported[IEEE80211_CHAN_BYTES]; /* XXX stack usage? */
+ int i;
+
+- memset(&chans, 0, sizeof(chans));
+- memset(&reported, 0, sizeof(reported));
++ memset(chans, 0, sizeof(*chans));
++ memset(reported, 0, sizeof(reported));
+ for (i = 0; i < ic->ic_nchans; i++) {
+ const struct ieee80211_channel *c = &ic->ic_channels[i];
+ const struct ieee80211_channel *c1 = c;
+
+- if (isclr(reported, c->ic_ieee)) {
++ if (!alreadyListed(chans, c->ic_freq)) {
+ setbit(reported, c->ic_ieee);
+
+- /* pick turbo channel over non-turbo channel, and
+- * 11g channel over 11b channel */
+ if (IEEE80211_IS_CHAN_A(c))
+- c1 = findchannel(ic, c->ic_ieee, IEEE80211_MODE_TURBO_A);
++ c1 = findchannel(ic, c->ic_freq,
++ IEEE80211_MODE_TURBO_A);
+ if (IEEE80211_IS_CHAN_ANYG(c))
+- c1 = findchannel(ic, c->ic_ieee, IEEE80211_MODE_TURBO_G);
++ c1 = findchannel(ic, c->ic_freq,
++ IEEE80211_MODE_TURBO_G);
+ else if (IEEE80211_IS_CHAN_B(c)) {
+- c1 = findchannel(ic, c->ic_ieee, IEEE80211_MODE_TURBO_G);
++ c1 = findchannel(ic, c->ic_freq,
++ IEEE80211_MODE_TURBO_G);
+ if (!c1)
+- c1 = findchannel(ic, c->ic_ieee, IEEE80211_MODE_11G);
++ c1 = findchannel(ic, c->ic_freq,
++ IEEE80211_MODE_11G);
+ }
+
+ if (c1)
+ c = c1;
+- /* Copy the entire structure, whereas it used to just copy a few fields */
+- memcpy(&chans.ic_chans[chans.ic_nchans], c, sizeof(struct ieee80211_channel));
+- if (++chans.ic_nchans >= IEEE80211_CHAN_MAX)
++ chans->ic_chans[chans->ic_nchans].ic_ieee = c->ic_ieee;
++ chans->ic_chans[chans->ic_nchans].ic_freq = c->ic_freq;
++ chans->ic_chans[chans->ic_nchans].ic_flags = c->ic_flags;
++ if (++chans->ic_nchans >= IEEE80211_CHAN_MAX)
+ break;
+ }
+ }
+- memcpy(extra, &chans, sizeof(struct ieee80211req_chaninfo));
+ return 0;
+ }
+
+--- a/net80211/ieee80211_scan_ap.c
++++ b/net80211/ieee80211_scan_ap.c
+@@ -512,12 +512,13 @@ pick_channel(struct ieee80211_scan_state
+ int ss_last = ss->ss_last;
+ struct ieee80211_channel *best;
+ struct ap_state *as = ss->ss_priv;
+- struct channel chans[ss_last]; /* actually ss_last-1 is required */
++ struct channel *chans; /* actually ss_last-1 is required */
+ struct channel *c = NULL;
+ struct pc_params params = { vap, ss, flags };
+ int benefit = 0;
+ int sta_assoc = 0;
+
++ chans = (struct channel *)kmalloc(ss_last*sizeof(struct channel),GFP_ATOMIC);
+ for (i = 0; i < ss_last; i++) {
+ chans[i].chan = ss->ss_chans[i];
+ chans[i].orig = i;
+@@ -601,6 +602,7 @@ pick_channel(struct ieee80211_scan_state
+ "%s: best: channel %u rssi %d\n",
+ __func__, i, as->as_maxrssi[i]);
+ }
++ kfree(chans);
+ return best;
+ }
+
+@@ -636,6 +638,7 @@ ap_end(struct ieee80211_scan_state *ss,
+ res = 1; /* Do NOT restart scan */
+ } else {
+ struct ieee80211_scan_entry se;
++ int i;
+ /* XXX: notify all VAPs? */
+ /* if this is a dynamic turbo frequency , start with normal
+ * mode first */
+@@ -650,6 +653,11 @@ ap_end(struct ieee80211_scan_state *ss,
+ return 0;
+ }
+ }
++ for (i = (bestchan - &ic->ic_channels[0])/sizeof(*bestchan) + 1; i < ic->ic_nchans; i++) {
++ if ((ic->ic_channels[i].ic_freq == bestchan->ic_freq) &&
++ IEEE80211_IS_CHAN_ANYG(&ic->ic_channels[i]))
++ bestchan = &ic->ic_channels[i];
++ }
+ memset(&se, 0, sizeof(se));
+ se.se_chan = bestchan;
+
+--- a/tools/wlanconfig.c
++++ b/tools/wlanconfig.c
+@@ -737,7 +737,7 @@ list_channels(const char *ifname, int al
+ if (get80211priv(ifname, IEEE80211_IOCTL_GETCHANINFO, &chans, sizeof(chans)) < 0)
+ errx(1, "unable to get channel information");
+ if (!allchans) {
+- uint8_t active[32];
++ uint8_t active[IEEE80211_CHAN_BYTES];
+
+ if (get80211priv(ifname, IEEE80211_IOCTL_GETCHANLIST, &active, sizeof(active)) < 0)
+ errx(1, "unable to get active channel list");
+--- a/net80211/ieee80211_scan.c
++++ b/net80211/ieee80211_scan.c
+@@ -1044,6 +1044,7 @@ ieee80211_scan_assoc_fail(struct ieee802
+ ss->ss_ops->scan_assoc_fail(ss, mac, reason);
+ }
+ }
++EXPORT_SYMBOL(ieee80211_scan_flush);
+
+ /*
+ * Iterate over the contents of the scan cache.
+--- a/ath/if_ath_hal_wrappers.h
++++ b/ath/if_ath_hal_wrappers.h
+@@ -111,6 +111,11 @@ static inline HAL_BOOL ath_hal_getregdom
+ return (ath_hal_getcapability(ah, HAL_CAP_REG_DMN, 0, destination) == HAL_OK);
+ }
+
++static inline HAL_BOOL ath_hal_setregdomain(struct ath_hal *ah, u_int32_t v)
++{
++ return (ath_hal_setcapability(ah, HAL_CAP_REG_DMN, 0, v, NULL));
++}
++
+ static inline HAL_BOOL ath_hal_gettkipmic(struct ath_hal *ah)
+ {
+ return (ath_hal_getcapability(ah, HAL_CAP_TKIP_MIC, 1, NULL) == HAL_OK);
--- /dev/null
+--- a/net80211/ieee80211_wireless.c
++++ b/net80211/ieee80211_wireless.c
+@@ -70,7 +70,8 @@
+ (((_dev)->flags & (IFF_RUNNING|IFF_UP)) == (IFF_RUNNING|IFF_UP))
+ #define IS_UP_AUTO(_vap) \
+ (IS_UP((_vap)->iv_dev) && \
+- (_vap)->iv_ic->ic_roaming == IEEE80211_ROAMING_AUTO)
++ (((_vap)->iv_opmode == IEEE80211_M_HOSTAP) || \
++ (_vap)->iv_ic->ic_roaming == IEEE80211_ROAMING_AUTO))
+ #define RESCAN 1
+
+ #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27)
+@@ -283,7 +284,7 @@ ieee80211_ioctl_siwencode(struct net_dev
+ vap->iv_flags &= ~IEEE80211_F_DROPUNENC;
+ }
+ }
+- if ((error == 0) && IS_UP(vap->iv_dev)) {
++ if ((error == 0) && IS_UP_AUTO(vap) && wepchange) {
+ /*
+ * Device is up and running; we must kick it to
+ * effect the change. If we're enabling/disabling
+@@ -291,8 +292,7 @@ ieee80211_ioctl_siwencode(struct net_dev
+ * so the 802.11 state machine is reset. Otherwise
+ * the key state should have been updated above.
+ */
+- if (wepchange && IS_UP_AUTO(vap))
+- ieee80211_new_state(vap, IEEE80211_S_SCAN, 0);
++ ieee80211_new_state(vap, IEEE80211_S_SCAN, 0);
+ }
+ #ifdef ATH_SUPERG_XR
+ /* set the same params on the xr vap device if exists */
--- /dev/null
+#
+# Copyright (C) 2008 OpenWrt.org
+#
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+
+include $(TOPDIR)/rules.mk
+include $(INCLUDE_DIR)/kernel.mk
+
+PKG_NAME:=wprobe
+PKG_VERSION:=1
+
+PKG_BUILD_DEPENDS:=PACKAGE_wprobe-export:libipfix
+
+PKG_CONFIG_DEPENDS = \
+ CONFIG_PACKAGE_kmod-wprobe \
+ CONFIG_PACKAGE_wprobe-export \
+
+include $(INCLUDE_DIR)/package.mk
+
+define KernelPackage/wprobe
+ SUBMENU:=Network Support
+ TITLE:=Wireless driver probe infrastructure
+ FILES:= \
+ $(PKG_BUILD_DIR)/kernel/wprobe.$(LINUX_KMOD_SUFFIX)
+ AUTOLOAD:=$(call AutoLoad,01,wprobe)
+endef
+
+define KernelPackage/wprobe/description
+ A module that exports measurement data from wireless driver to user space
+endef
+
+define Package/wprobe-info
+ SECTION:=net
+ CATEGORY:=Network
+ DEPENDS:=+kmod-wprobe +libnl-tiny
+ TITLE:=Wireless measurement utility
+endef
+
+define Package/wprobe-info/description
+ wprobe-info uses the wprobe kernel module to query
+ wireless driver measurement data from an interface
+endef
+
+define Package/wprobe-export
+ SECTION:=net
+ CATEGORY:=Network
+ DEPENDS:=+kmod-wprobe +libnl-tiny
+ TITLE:=Wireless measurement data exporter
+endef
+
+define Package/wprobe-export/description
+ wprobe-export uses the wprobe kernel module to export
+ wireless driver measurement data via the IPFIX protocol
+endef
+
+define Build/Prepare
+ mkdir -p $(PKG_BUILD_DIR)
+ $(CP) src/* $(PKG_BUILD_DIR)/
+endef
+
+TARGET_CPPFLAGS := \
+ -I$(STAGING_DIR)/usr/include/libnl-tiny \
+ $(TARGET_CPPFLAGS)
+
+ifdef CONFIG_PACKAGE_kmod-wprobe
+ define Build/Compile/kmod
+ $(MAKE) -C $(LINUX_DIR) \
+ CROSS_COMPILE="$(TARGET_CROSS)" \
+ ARCH="$(LINUX_KARCH)" \
+ SUBDIRS="$(PKG_BUILD_DIR)/kernel" \
+ KERNELDIR=$(LINUX_DIR) \
+ CC="$(TARGET_CC)" \
+ EXTRA_CFLAGS="-I$(PKG_BUILD_DIR)/kernel" \
+ modules
+ endef
+endif
+
+define Build/Compile/lib
+ $(MAKE) -C $(PKG_BUILD_DIR)/user \
+ $(TARGET_CONFIGURE_OPTS) \
+ CFLAGS="$(TARGET_CFLAGS)" \
+ CPPFLAGS="$(TARGET_CPPFLAGS) -I$(PKG_BUILD_DIR)/kernel" \
+ LDFLAGS="$(TARGET_LDFLAGS)" \
+ LIBNL="-lnl-tiny"
+endef
+
+ifdef CONFIG_PACKAGE_wprobe-export
+ define Build/Compile/exporter
+ $(MAKE) -C $(PKG_BUILD_DIR)/exporter \
+ $(TARGET_CONFIGURE_OPTS) \
+ CFLAGS="$(TARGET_CFLAGS)" \
+ CPPFLAGS="$(TARGET_CPPFLAGS) -I$(PKG_BUILD_DIR)/kernel -I$(PKG_BUILD_DIR)/user" \
+ LDFLAGS="$(TARGET_LDFLAGS)" \
+ LIBS="$(PKG_BUILD_DIR)/user/libwprobe.a $(STAGING_DIR)/usr/lib/libipfix.a $(STAGING_DIR)/usr/lib/libmisc.a -lnl-tiny -lm"
+ endef
+endif
+
+define Build/Compile
+ $(Build/Compile/kmod)
+ $(Build/Compile/lib)
+ $(Build/Compile/exporter)
+endef
+
+define Build/InstallDev
+ $(INSTALL_DIR) $(1)/usr/include/wprobe
+ $(CP) $(PKG_BUILD_DIR)/kernel/linux $(1)/usr/include/wprobe
+endef
+
+define Package/wprobe-info/install
+ $(INSTALL_DIR) $(1)/sbin
+ $(INSTALL_BIN) $(PKG_BUILD_DIR)/user/wprobe-info $(1)/sbin/
+endef
+
+define Package/wprobe-export/install
+ $(INSTALL_DIR) $(1)/sbin $(1)/etc/init.d
+ $(INSTALL_BIN) ./files/wprobe.init $(1)/etc/init.d/
+ $(INSTALL_BIN) $(PKG_BUILD_DIR)/exporter/wprobe-export $(1)/sbin/
+endef
+
+$(eval $(call KernelPackage,wprobe))
+$(eval $(call BuildPackage,wprobe-info))
+$(eval $(call BuildPackage,wprobe-export))
--- /dev/null
+#!/bin/sh /etc/rc.common
+START=90
+
+wprobe_ssd() {
+ local cfg="$1"; shift
+ local cmd="$1"; shift
+ start-stop-daemon "$cmd" -p "/var/run/wprobe-$cfg.pid" -b -x /sbin/wprobe-export -m -- "$@"
+}
+
+stop_wprobe() {
+ local cfg="$1"
+ [ -f "/var/run/wprobe-$cfg.pid" ] && wprobe_ssd "$cfg" -K
+ rm -f "/var/run/wprobe-$cfg.pid"
+}
+
+start_wprobe() {
+ local cfg="$1"
+ config_get ifname "$cfg" interface
+ config_get host "$cfg" host
+ config_get port "$cfg" port
+ config_get proto "$cfg" proto
+ case "$proto" in
+ sctp) proto="-s";;
+ tcp) proto="-t";;
+ udp) proto="-u";;
+ *) proto="-t";;
+ esac
+ [ -z "$ifname" -o -z "$host" ] && {
+ echo "wprobe-export: missing host or interface name in config $cfg"
+ return
+ }
+ wprobe_ssd "$cfg" -S "$proto" -i "$ifname" -c "$host" -p "${port:-4739}"
+}
+
+stop() {
+ for f in /var/run/wprobe-*.pid; do
+ CFG="${f%%.pid}"
+ CFG="${CFG##/var/run/wprobe-}"
+ stop_wprobe "$CFG"
+ done
+}
+
+start() {
+ config_load wprobe
+ config_foreach start_wprobe wprobe
+}
--- /dev/null
+wprobe-export: wprobe-export.c
+ $(CC) $(CPPFLAGS) $(CFLAGS) -o $@ $^ $(LDFLAGS) $(LIBS)
--- /dev/null
+/*
+** exporter.c - example exporter
+**
+** Copyright Fraunhofer FOKUS
+**
+*/
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <errno.h>
+
+#include <ipfix_def.h>
+#include <ipfix_def_fokus.h>
+#include <ipfix_fields_fokus.h>
+
+#include <ipfix.h>
+#include <mlog.h>
+#include <wprobe.h>
+#include <stdbool.h>
+
+static ipfix_datarecord_t g_data = { NULL, NULL, 0 };
+static int do_close = 0;
+
+struct wprobe_mapping {
+ int id;
+ bool counter;
+ float scale;
+ const char *wprobe_id;
+ struct wprobe_value *val;
+};
+
+#ifndef ARRAY_SIZE
+#define ARRAY_SIZE(_array) (sizeof(_array) / sizeof((_array)[0]))
+#endif
+
+#define WMAP(_id, _name, ...) \
+ { \
+ .scale = 1.0f, \
+ .counter = false, \
+ .id = IPFIX_FT_WPROBE_##_id##_AVG, \
+ .wprobe_id = _name \
+ , ## __VA_ARGS__ \
+ }
+
+#define WMAP_COUNTER(_id, _name, ...) \
+ { \
+ .scale = 1.0f, \
+ .counter = true, \
+ .id = IPFIX_FT_WPROBE_##_id, \
+ .wprobe_id = _name \
+ , ## __VA_ARGS__ \
+ }
+
+
+#define WPROBE_OFFSET 2
+
+static struct wprobe_mapping map_globals[] = {
+ WMAP(NOISE, "noise"),
+ WMAP(PHY_BUSY, "phy_busy"),
+ WMAP(PHY_RX, "phy_rx"),
+ WMAP(PHY_TX, "phy_tx"),
+ WMAP_COUNTER(FRAMES, "frames"),
+ WMAP_COUNTER(PROBEREQ, "probereq"),
+};
+
+static struct wprobe_mapping map_perlink[] = {
+ WMAP(IEEE_TX_RATE, "tx_rate", .scale = 10.0f),
+ WMAP(IEEE_RX_RATE, "rx_rate", .scale = 10.0f),
+ WMAP(RSSI, "rssi"),
+ WMAP(SIGNAL, "signal"),
+ WMAP(RETRANSMIT_200, "retransmit_200"),
+ WMAP(RETRANSMIT_400, "retransmit_400"),
+ WMAP(RETRANSMIT_800, "retransmit_800"),
+ WMAP(RETRANSMIT_1600, "retransmit_1600"),
+};
+
+static unsigned char link_local[6];
+static char link_default[6];
+static LIST_HEAD(global_attr);
+static LIST_HEAD(link_attr);
+static LIST_HEAD(links);
+static int nfields = 0;
+
+#define FOKUS_USERID 12325
+
+static void
+match_template(struct wprobe_mapping *map, int n, struct list_head *list)
+{
+ struct wprobe_attribute *attr;
+ int i, j, last = -1;
+
+ list_for_each_entry(attr, list, list) {
+ for (i = 0; i < n; i++) {
+ j = (last + 1 + i) % n;
+ if (!strcmp(attr->name, map[j].wprobe_id))
+ goto found;
+ }
+ continue;
+found:
+ last = j;
+ map[j].val = &attr->val;
+ memset(&attr->val, 0, sizeof(attr->val));
+ nfields++;
+ }
+}
+
+/* name: export_ipfix_get_template()
+ */
+static ipfix_template_t *
+prepare_template(ipfix_t *handle)
+{
+ ipfix_template_t *t = NULL;
+ int size = 3 * nfields + WPROBE_OFFSET;
+ int i;
+
+ if (ipfix_new_data_template( handle, &t, size) < 0) {
+ mlogf( 0, "ipfix_new_template() failed: %s\n", strerror(errno) );
+ exit(1);
+ }
+
+ ipfix_add_field(handle, t, 0, IPFIX_FT_SOURCEMACADDRESS, 6);
+ ipfix_add_field(handle, t, 0, IPFIX_FT_DESTINATIONMACADDRESS, 6);
+
+ g_data.lens = calloc(size, sizeof(g_data.lens[0]));
+ g_data.lens[0] = 6;
+ g_data.lens[1] = 6;
+ for (i = WPROBE_OFFSET; i < size; i++)
+ g_data.lens[i] = 4;
+
+ g_data.addrs = calloc(size, sizeof(g_data.addrs[0]));
+ g_data.addrs[0] = link_local;
+ g_data.maxfields = WPROBE_OFFSET;
+ return t;
+}
+
+static void
+add_template_fields(ipfix_t *handle, ipfix_template_t *t, struct wprobe_mapping *map, int n)
+{
+ int f = g_data.maxfields;
+ int i;
+
+ for (i = 0; i < n; i++) {
+ if (!map[i].val)
+ continue;
+
+ if (map[i].counter)
+ g_data.addrs[f++] = &map[i].val->U32;
+ else
+ g_data.addrs[f++] = &map[i].val->avg;
+
+ if (ipfix_add_field( handle, t, FOKUS_USERID, map[i].id + 0, 4) < 0)
+ exit(1);
+
+ if (map[i].counter)
+ continue;
+
+ g_data.addrs[f++] = &map[i].val->stdev;
+ g_data.addrs[f++] = &map[i].val->n;
+ if (ipfix_add_field( handle, t, FOKUS_USERID, map[i].id + 1, 4) < 0)
+ exit(1);
+ if (ipfix_add_field( handle, t, FOKUS_USERID, map[i].id + 2, 4) < 0)
+ exit(1);
+ }
+ g_data.maxfields = f;
+}
+
+static void
+wprobe_dump_data(ipfix_t *ipfixh, ipfix_template_t *ipfixt, const char *ifname, struct list_head *gl, struct list_head *ll, struct list_head *ls)
+{
+ struct wprobe_link *link;
+
+ wprobe_update_links(ifname, ls);
+ wprobe_request_data(ifname, gl, NULL, 2);
+ if (list_empty(ls)) {
+ g_data.addrs[1] = link_default;
+ ipfix_export_array(ipfixh, ipfixt, g_data.maxfields, g_data.addrs, g_data.lens);
+ ipfix_export_flush(ipfixh);
+ }
+ list_for_each_entry(link, ls, list) {
+ g_data.addrs[1] = link->addr;
+ wprobe_request_data(ifname, ll, link->addr, 2);
+ ipfix_export_array(ipfixh, ipfixt, g_data.maxfields, g_data.addrs, g_data.lens);
+ ipfix_export_flush(ipfixh);
+ }
+}
+
+int main ( int argc, char **argv )
+{
+ ipfix_template_t *ipfixt = NULL;
+ ipfix_t *ipfixh = NULL;
+ int protocol = IPFIX_PROTO_TCP;
+ char *chost = NULL;
+ char *ifname = NULL;
+ int sourceid = 12345;
+ int port = IPFIX_PORTNO;
+ int verbose_level = 0;
+ int opt, i = 10;
+
+ while ((opt = getopt(argc, argv, "hi:c:p:vstu")) != EOF) {
+ switch (opt) {
+ case 'p':
+ if ((port=atoi(optarg)) <0) {
+ fprintf( stderr, "Invalid -p argument!\n" );
+ exit(1);
+ }
+ break;
+ case 'i':
+ ifname = optarg;
+ break;
+ case 'c':
+ chost = optarg;
+ break;
+
+ case 's':
+ protocol = IPFIX_PROTO_SCTP;
+ break;
+
+ case 't':
+ protocol = IPFIX_PROTO_TCP;
+ break;
+
+ case 'u':
+ protocol = IPFIX_PROTO_UDP;
+ break;
+
+ case 'v':
+ verbose_level ++;
+ break;
+
+ case 'h':
+ default:
+ fprintf(stderr, "usage: %s [-hstuv] -i <interface> -c <collector> [-p portno]\n"
+ " -h this help\n"
+ " -i <interface> wprobe interface\n"
+ " -c <collector> collector address\n"
+ " -p <portno> collector port number (default=%d)\n"
+ " -s send data via SCTP\n"
+ " -t send data via TCP (default)\n"
+ " -u send data via UDP\n"
+ " -v increase verbose level\n\n",
+ argv[0], IPFIX_PORTNO );
+ exit(1);
+ }
+ }
+
+ if (!ifname) {
+ fprintf(stderr, "No interface specified\n");
+ return -1;
+ }
+
+ if (!chost) {
+ fprintf(stderr, "No collector specified\n");
+ return -1;
+ }
+
+ if (wprobe_init() != 0) {
+ fprintf(stderr, "wprobe init failed\n");
+ return -1;
+ }
+
+ wprobe_dump_attributes(ifname, false, &global_attr, (char *) link_local);
+ wprobe_dump_attributes(ifname, true, &link_attr, NULL);
+ if (list_empty(&global_attr) && list_empty(&link_attr)) {
+ fprintf(stderr, "Cannot connect to wprobe on interface '%s'\n", ifname);
+ return -1;
+ }
+
+ match_template(map_globals, ARRAY_SIZE(map_globals), &global_attr);
+ match_template(map_perlink, ARRAY_SIZE(map_perlink), &link_attr);
+ if (nfields == 0) {
+ fprintf(stderr, "No usable attributes found\n");
+ return -1;
+ }
+
+ mlog_set_vlevel( verbose_level );
+ if (ipfix_init() < 0) {
+ fprintf( stderr, "cannot init ipfix module: %s\n", strerror(errno) );
+ exit(1);
+ }
+
+ ipfix_add_vendor_information_elements(ipfix_ft_fokus);
+ if (ipfix_open(&ipfixh, sourceid, IPFIX_VERSION) < 0) {
+ fprintf( stderr, "ipfix_open() failed: %s\n", strerror(errno) );
+ exit(1);
+ }
+
+ if (ipfix_add_collector( ipfixh, chost, port, protocol ) < 0) {
+ fprintf( stderr, "ipfix_add_collector(%s,%d) failed: %s\n",
+ chost, port, strerror(errno));
+ exit(1);
+ }
+
+ fprintf(stderr, "Local link address: %02x:%02x:%02x:%02x:%02x:%02x\n",
+ link_local[0], link_local[1], link_local[2],
+ link_local[3], link_local[4], link_local[5]);
+
+ ipfixt = prepare_template(ipfixh);
+ add_template_fields(ipfixh, ipfixt, map_globals, ARRAY_SIZE(map_globals));
+ add_template_fields(ipfixh, ipfixt, map_perlink, ARRAY_SIZE(map_perlink));
+
+ while (!do_close) {
+ usleep(100 * 1000);
+ wprobe_measure(ifname);
+
+ if (i-- > 0)
+ continue;
+
+ i = 10;
+ wprobe_dump_data(ipfixh, ipfixt, ifname, &global_attr, &link_attr, &links);
+ }
+
+ ipfix_delete_template( ipfixh, ipfixt );
+ ipfix_close( ipfixh );
+ ipfix_cleanup();
+ exit(0);
+}
--- /dev/null
+#include <inttypes.h>
+#include <stdint.h>
+#include <stdbool.h>
+
+/**
+ * struct wprobe_value: data structure for attribute values
+ * see kernel api netlink attributes for more information
+ */
+struct wprobe_value {
+ /* attribute value */
+ union data {
+ const char *STRING;
+ uint8_t U8;
+ uint16_t U16;
+ uint32_t U32;
+ uint64_t U64;
+ int8_t S8;
+ int16_t S16;
+ int32_t S32;
+ int64_t S64;
+ } data;
+ /* statistics */
+ int64_t s, ss;
+ double avg, stdev;
+ unsigned int n;
+ void *usedata; /* Pointer to used data.something */
+};
+
+struct exporter_data {
+ int id; /* ipfix id */
+ int userid; /* focus or global */
+ int size; /* size in byte*/
+ struct wprobe_value val;
+};
--- /dev/null
+EXTRA_CFLAGS += -I.
+
+obj-m := wprobe.o wprobe-dummy.o
+
+wprobe-objs := wprobe-core.o
--- /dev/null
+/*
+ * wprobe.h: API for the wireless probe interface
+ * Copyright (C) 2008-2009 Felix Fietkau <nbd@openwrt.org>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef __WPROBE_H
+#define __WPROBE_H
+
+#ifdef __KERNEL__
+#include <linux/types.h>
+#include <linux/if_ether.h>
+#include <linux/spinlock.h>
+#include <linux/module.h>
+#include <linux/list.h>
+#include <net/genetlink.h>
+#endif
+
+/**
+ * enum wprobe_attr: netlink attribute list
+ *
+ * @WPROBE_ATTR_UNSPEC: unused
+ *
+ * @WPROBE_ATTR_INTERFACE: interface name to process query on (NLA_STRING)
+ * @WPROBE_ATTR_MAC: mac address (used for wireless links) (NLA_STRING)
+ * @WPROBE_ATTR_FLAGS: interface/link/attribute flags (see enum wprobe_flags) (NLA_U32)
+ * @WPROBE_ATTR_DURATION: sampling duration (in milliseconds) (NLA_MSECS)
+ *
+ * @WPROBE_ATTR_ID: attribute id (NLA_U32)
+ * @WPROBE_ATTR_NAME: attribute name (NLA_STRING)
+ * @WPROBE_ATTR_TYPE: attribute type (NLA_U8)
+ * @WPROBE_ATTR_SCALE: attribute scale factor (NLA_U32)
+ *
+ * attribute values:
+ *
+ * @WPROBE_VAL_STRING: string value (NLA_STRING)
+ * @WPROBE_VAL_S8: signed 8-bit integer (NLA_U8)
+ * @WPROBE_VAL_S16: signed 16-bit integer (NLA_U16)
+ * @WPROBE_VAL_S32: signed 32-bit integer (NLA_U32)
+ * @WPROBE_VAL_S64: signed 64-bit integer (NLA_U64)
+ * @WPROBE_VAL_U8: unsigned 8-bit integer (NLA_U8)
+ * @WPROBE_VAL_U16: unsigned 16-bit integer (NLA_U16)
+ * @WPROBE_VAL_U32: unsigned 32-bit integer (NLA_U32)
+ * @WPROBE_VAL_U64: unsigned 64-bit integer (NLA_U64)
+ *
+ * statistics:
+ * @WPROBE_VAL_SUM: sum of all samples
+ * @WPROBE_VAL_SUM_SQ: sum of all samples^2
+ * @WPROBE_VAL_SAMPLES: number of samples
+ *
+ * @WPROBE_ATTR_LAST: unused
+ */
+enum wprobe_attr {
+ WPROBE_ATTR_UNSPEC,
+ WPROBE_ATTR_INTERFACE,
+ WPROBE_ATTR_MAC,
+ WPROBE_ATTR_FLAGS,
+ WPROBE_ATTR_DURATION,
+ WPROBE_ATTR_SCALE,
+ /* end of query attributes */
+
+ /* response data */
+ WPROBE_ATTR_ID,
+ WPROBE_ATTR_NAME,
+ WPROBE_ATTR_TYPE,
+
+ /* value type attributes */
+ WPROBE_VAL_STRING,
+ WPROBE_VAL_S8,
+ WPROBE_VAL_S16,
+ WPROBE_VAL_S32,
+ WPROBE_VAL_S64,
+ WPROBE_VAL_U8,
+ WPROBE_VAL_U16,
+ WPROBE_VAL_U32,
+ WPROBE_VAL_U64,
+
+ /* aggregates for statistics */
+ WPROBE_VAL_SUM,
+ WPROBE_VAL_SUM_SQ,
+ WPROBE_VAL_SAMPLES,
+
+ WPROBE_ATTR_LAST
+};
+
+
+/**
+ * enum wprobe_cmd: netlink commands for interacting with wprobe
+ *
+ * @WPROBE_CMD_UNSPEC: unused
+ *
+ * @WPROBE_CMD_GET_LIST: get global/link property list
+ * @WPROBE_CMD_GET_INFO: get global/link properties
+ * @WPROBE_CMD_SET_FLAGS: set global/link flags
+ * @WPROBE_CMD_MEASURE: take a snapshot of the current data
+ * @WPROBE_CMD_GET_LINKS: get a list of links
+ *
+ * @WPROBE_CMD_LAST: unused
+ *
+ * options for GET_INFO and SET_FLAGS:
+ * - mac address set: per-link
+ * - mac address unset: globalsa
+ */
+enum wprobe_cmd {
+ WPROBE_CMD_UNSPEC,
+ WPROBE_CMD_GET_LIST,
+ WPROBE_CMD_GET_INFO,
+ WPROBE_CMD_SET_FLAGS,
+ WPROBE_CMD_MEASURE,
+ WPROBE_CMD_GET_LINKS,
+ WPROBE_CMD_LAST
+};
+
+/**
+ * enum wprobe_flags: flags for wprobe links and items
+ * @WPROBE_F_KEEPSTAT: keep statistics for this link/device
+ * @WPROBE_F_RESET: reset statistics now (used only in WPROBE_CMD_SET_LINK)
+ * @WPROBE_F_NEWDATA: used to indicate that a value has been updated
+ */
+enum wprobe_flags {
+ WPROBE_F_KEEPSTAT = (1 << 0),
+ WPROBE_F_RESET = (1 << 1),
+ WPROBE_F_NEWDATA = (1 << 2),
+};
+
+#ifdef __KERNEL__
+
+struct wprobe_link;
+struct wprobe_item;
+struct wprobe_source;
+
+/**
+ * struct wprobe_link - data structure describing a wireless link
+ * @iface: pointer to the wprobe_iface that this link belongs to
+ * @addr: BSSID of the remote link partner
+ * @flags: link flags (see wprobe_flags)
+ * @priv: user pointer
+ *
+ * @list: for internal use
+ * @val: for internal use
+ */
+struct wprobe_link {
+ struct list_head list;
+ struct wprobe_iface *iface;
+ char addr[ETH_ALEN];
+ u32 flags;
+ void *priv;
+ void *val;
+};
+
+/**
+ * struct wprobe_item - data structure describing the format of wprobe_link::data or wprobe_iface::data
+ * @name: name of the field
+ * @type: data type of this field
+ * @flags: measurement item flags (see wprobe_flags)
+ */
+struct wprobe_item {
+ const char *name;
+ enum wprobe_attr type;
+ u32 flags;
+};
+
+struct wprobe_value {
+ bool pending;
+ union {
+ /*
+ * the following are kept uppercase to allow
+ * for automated checking against WPROBE_VAL_*
+ * via BUG_ON()
+ */
+ const char *STRING;
+ u8 U8;
+ u16 U16;
+ u32 U32;
+ u64 U64;
+ s8 S8;
+ s16 S16;
+ s32 S32;
+ s64 S64;
+ };
+ s64 s, ss;
+ unsigned int n;
+
+ /* timestamps */
+ u64 first, last;
+};
+
+/**
+ * struct wprobe_source - data structure describing a wireless interface
+ *
+ * @name: name of the interface
+ * @addr: local mac address of the interface
+ * @links: list of wireless links to poll
+ * @link_items: description of the per-link data structure
+ * @n_link_items: number of link description items
+ * @global_items: description of the per-interface data structure
+ * @n_global_items: number of per-interface description items
+ * @sync_data: callback allowing the driver to prepare data for the wprobe poll
+ *
+ * @list: head for the list of interfaces
+ * @priv: user pointer
+ * @lock: spinlock protecting value data access
+ * @val: internal use
+ * @query_val: internal use
+ *
+ * if sync_data is NULL, wprobe assumes that it can access the data structure
+ * at any time (in atomic context). if sync_data returns a negative error code,
+ * the poll request will not be handled for the given link
+ */
+struct wprobe_iface {
+ /* to be filled in by wprobe source drivers */
+ const char *name;
+ const char *addr;
+ const struct wprobe_item *link_items;
+ int n_link_items;
+ const struct wprobe_item *global_items;
+ int n_global_items;
+
+ int (*sync_data)(struct wprobe_iface *dev, struct wprobe_link *l, struct wprobe_value *val, bool measure);
+ void *priv;
+
+ /* handled by the wprobe core */
+ struct list_head list;
+ struct list_head links;
+ spinlock_t lock;
+ void *val;
+ void *query_val;
+};
+
+#define WPROBE_FILL_BEGIN(_ptr, _list) do { \
+ struct wprobe_value *__val = (_ptr); \
+ const struct wprobe_item *__item = _list; \
+ u64 __msecs = jiffies_to_msecs(jiffies)
+
+#define WPROBE_SET(_idx, _type, _value) \
+ if (__item[_idx].type != WPROBE_VAL_##_type) { \
+ printk("ERROR: invalid data type at %s:%d\n", __FILE__, __LINE__); \
+ break; \
+ } \
+ __val[_idx].pending = true; \
+ __val[_idx]._type = _value; \
+ if (!__val[_idx].first) \
+ __val[_idx].first = __msecs; \
+ __val[_idx].first = __msecs
+
+#define WPROBE_FILL_END() \
+} while(0)
+
+/**
+ * wprobe_add_iface: register an interface with the wireless probe subsystem
+ * @dev: wprobe_iface structure describing the interface
+ */
+extern int __weak wprobe_add_iface(struct wprobe_iface *dev);
+
+/**
+ * wprobe_remove_iface: deregister an interface from the wireless probe subsystem
+ * @dev: wprobe_iface structure describing the interface
+ */
+extern void __weak wprobe_remove_iface(struct wprobe_iface *dev);
+
+/**
+ * wprobe_add_link: register a new wireless link
+ * @dev: wprobe_iface structure describing the interface
+ * @l: storage space for the wprobe_link structure
+ * @addr: mac address of the new link
+ *
+ * the entire wprobe_link structure is overwritten by this function call
+ */
+extern int __weak wprobe_add_link(struct wprobe_iface *dev, struct wprobe_link *l, const char *addr);
+
+/**
+ * wprobe_remove_link: deregister a previously registered wireless link
+ * @dev: wprobe_iface structure describing the interface
+ * @l: wprobe_link data structure
+ */
+extern void __weak wprobe_remove_link(struct wprobe_iface *dev, struct wprobe_link *l);
+
+/**
+ * wprobe_update_stats: update statistics after sampling values
+ * @dev: wprobe_iface structure describing the interface
+ * @l: wprobe_link data structure
+ *
+ * if l == NULL, then the stats for globals are updated
+ */
+extern void __weak wprobe_update_stats(struct wprobe_iface *dev, struct wprobe_link *l);
+
+#endif /* __KERNEL__ */
+
+#endif
--- /dev/null
+/*
+ * wprobe-core.c: Wireless probe interface core
+ * Copyright (C) 2008-2009 Felix Fietkau <nbd@openwrt.org>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/kernel.h>
+#include <linux/version.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/spinlock.h>
+#include <linux/rcupdate.h>
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,26)
+#include <linux/rculist.h>
+#else
+#include <linux/list.h>
+#endif
+#include <linux/skbuff.h>
+#include <linux/wprobe.h>
+#include <linux/math64.h>
+
+#define static
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,28)
+#define list_for_each_rcu __list_for_each_rcu
+#endif
+
+static struct list_head wprobe_if;
+static spinlock_t wprobe_lock;
+
+static struct genl_family wprobe_fam = {
+ .id = GENL_ID_GENERATE,
+ .name = "wprobe",
+ .hdrsize = 0,
+ .version = 1,
+ /* only the first set of attributes is used for queries */
+ .maxattr = WPROBE_ATTR_ID,
+};
+
+static void wprobe_update_stats(struct wprobe_iface *dev, struct wprobe_link *l);
+
+int
+wprobe_add_link(struct wprobe_iface *s, struct wprobe_link *l, const char *addr)
+{
+ unsigned long flags;
+
+ INIT_LIST_HEAD(&l->list);
+ l->val = kzalloc(sizeof(struct wprobe_value) * s->n_link_items, GFP_ATOMIC);
+ if (!l->val)
+ return -ENOMEM;
+
+ l->iface = s;
+ memcpy(&l->addr, addr, ETH_ALEN);
+ spin_lock_irqsave(&wprobe_lock, flags);
+ list_add_tail_rcu(&l->list, &s->links);
+ spin_unlock_irqrestore(&wprobe_lock, flags);
+
+ return 0;
+}
+EXPORT_SYMBOL(wprobe_add_link);
+
+void
+wprobe_remove_link(struct wprobe_iface *s, struct wprobe_link *l)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&wprobe_lock, flags);
+ list_del_rcu(&l->list);
+ spin_unlock_irqrestore(&wprobe_lock, flags);
+ synchronize_rcu();
+ kfree(l->val);
+}
+EXPORT_SYMBOL(wprobe_remove_link);
+
+int
+wprobe_add_iface(struct wprobe_iface *s)
+{
+ unsigned long flags;
+ int vsize;
+
+ /* reset only wprobe private area */
+ memset(&s->list, 0, sizeof(struct wprobe_iface) - offsetof(struct wprobe_iface, list));
+
+ BUG_ON(!s->name);
+ INIT_LIST_HEAD(&s->list);
+ INIT_LIST_HEAD(&s->links);
+
+ vsize = max(s->n_link_items, s->n_global_items);
+ s->val = kzalloc(sizeof(struct wprobe_value) * vsize, GFP_ATOMIC);
+ if (!s->val)
+ goto error;
+
+ s->query_val = kzalloc(sizeof(struct wprobe_value) * vsize, GFP_ATOMIC);
+ if (!s->query_val)
+ goto error;
+
+ spin_lock_irqsave(&wprobe_lock, flags);
+ list_add_rcu(&s->list, &wprobe_if);
+ spin_unlock_irqrestore(&wprobe_lock, flags);
+
+ return 0;
+
+error:
+ if (s->val)
+ kfree(s->val);
+ return -ENOMEM;
+}
+EXPORT_SYMBOL(wprobe_add_iface);
+
+void
+wprobe_remove_iface(struct wprobe_iface *s)
+{
+ unsigned long flags;
+
+ BUG_ON(!list_empty(&s->links));
+
+ spin_lock_irqsave(&wprobe_lock, flags);
+ list_del_rcu(&s->list);
+ spin_unlock_irqrestore(&wprobe_lock, flags);
+
+ /* wait for all queries to finish before freeing the
+ * temporary value storage buffer */
+ synchronize_rcu();
+
+ kfree(s->val);
+ kfree(s->query_val);
+}
+EXPORT_SYMBOL(wprobe_remove_iface);
+
+static struct wprobe_iface *
+wprobe_get_dev(struct nlattr *attr)
+{
+ struct wprobe_iface *dev = NULL;
+ struct wprobe_iface *p;
+ const char *name;
+ int i = 0;
+
+ if (!attr)
+ return NULL;
+
+ name = nla_data(attr);
+ list_for_each_entry_rcu(p, &wprobe_if, list) {
+ i++;
+ if (strcmp(name, p->name) != 0)
+ continue;
+
+ dev = p;
+ break;
+ }
+
+ return dev;
+}
+
+int
+wprobe_sync_data(struct wprobe_iface *dev, struct wprobe_link *l, bool query)
+{
+ struct wprobe_value *val;
+ unsigned long flags;
+ int n, err;
+
+ if (l) {
+ n = dev->n_link_items;
+ val = l->val;
+ } else {
+ n = dev->n_global_items;
+ val = dev->val;
+ }
+
+ spin_lock_irqsave(&dev->lock, flags);
+ err = dev->sync_data(dev, l, val, !query);
+ if (err)
+ goto done;
+
+ if (query)
+ memcpy(dev->query_val, val, sizeof(struct wprobe_value) * n);
+
+ wprobe_update_stats(dev, l);
+done:
+ spin_unlock_irqrestore(&dev->lock, flags);
+ return 0;
+}
+EXPORT_SYMBOL(wprobe_sync_data);
+
+void
+wprobe_update_stats(struct wprobe_iface *dev, struct wprobe_link *l)
+{
+ const struct wprobe_item *item;
+ struct wprobe_value *val;
+ int i, n;
+
+ if (l) {
+ n = dev->n_link_items;
+ item = dev->link_items;
+ val = l->val;
+ } else {
+ n = dev->n_global_items;
+ item = dev->global_items;
+ val = dev->val;
+ }
+
+ /* process statistics */
+ for (i = 0; i < n; i++) {
+ s64 v;
+
+ if (!val[i].pending)
+ continue;
+
+ val[i].n++;
+
+ switch(item[i].type) {
+ case WPROBE_VAL_S8:
+ v = val[i].S8;
+ break;
+ case WPROBE_VAL_S16:
+ v = val[i].S16;
+ break;
+ case WPROBE_VAL_S32:
+ v = val[i].S32;
+ break;
+ case WPROBE_VAL_S64:
+ v = val[i].S64;
+ break;
+ case WPROBE_VAL_U8:
+ v = val[i].U8;
+ break;
+ case WPROBE_VAL_U16:
+ v = val[i].U16;
+ break;
+ case WPROBE_VAL_U32:
+ v = val[i].U32;
+ break;
+ case WPROBE_VAL_U64:
+ v = val[i].U64;
+ break;
+ default:
+ continue;
+ }
+
+ val[i].s += v;
+ val[i].ss += v * v;
+ val[i].pending = false;
+ }
+}
+EXPORT_SYMBOL(wprobe_update_stats);
+
+static const struct nla_policy wprobe_policy[WPROBE_ATTR_ID+1] = {
+ [WPROBE_ATTR_INTERFACE] = { .type = NLA_NUL_STRING },
+ [WPROBE_ATTR_MAC] = { .type = NLA_STRING },
+ [WPROBE_ATTR_DURATION] = { .type = NLA_MSECS },
+ [WPROBE_ATTR_FLAGS] = { .type = NLA_U32 },
+ [WPROBE_ATTR_SCALE] = { .type = NLA_U32 },
+};
+
+static bool
+wprobe_check_ptr(struct list_head *list, struct list_head *ptr)
+{
+ struct list_head *p;
+
+ list_for_each_rcu(p, list) {
+ if (ptr == p)
+ return true;
+ }
+ return false;
+}
+
+static bool
+wprobe_send_item_value(struct sk_buff *msg, struct netlink_callback *cb,
+ struct wprobe_iface *dev, struct wprobe_link *l,
+ const struct wprobe_item *item,
+ int i, u32 flags)
+{
+ struct genlmsghdr *hdr;
+ struct wprobe_value *val = dev->query_val;
+ u64 time = val[i].last - val[i].first;
+
+ hdr = genlmsg_put(msg, NETLINK_CB(cb->skb).pid, cb->nlh->nlmsg_seq,
+ &wprobe_fam, NLM_F_MULTI, WPROBE_CMD_GET_INFO);
+
+ NLA_PUT_U32(msg, WPROBE_ATTR_ID, i);
+ NLA_PUT_U32(msg, WPROBE_ATTR_FLAGS, flags);
+ NLA_PUT_U8(msg, WPROBE_ATTR_TYPE, item[i].type);
+ NLA_PUT_U64(msg, WPROBE_ATTR_DURATION, time);
+
+ switch(item[i].type) {
+ case WPROBE_VAL_S8:
+ case WPROBE_VAL_U8:
+ NLA_PUT_U8(msg, item[i].type, val[i].U8);
+ break;
+ case WPROBE_VAL_S16:
+ case WPROBE_VAL_U16:
+ NLA_PUT_U16(msg, item[i].type, val[i].U16);
+ break;
+ case WPROBE_VAL_S32:
+ case WPROBE_VAL_U32:
+ NLA_PUT_U32(msg, item[i].type, val[i].U32);
+ break;
+ case WPROBE_VAL_S64:
+ case WPROBE_VAL_U64:
+ NLA_PUT_U64(msg, item[i].type, val[i].U64);
+ break;
+ case WPROBE_VAL_STRING:
+ if (val[i].STRING)
+ NLA_PUT_STRING(msg, item[i].type, val[i].STRING);
+ else
+ NLA_PUT_STRING(msg, item[i].type, "");
+ /* bypass avg/stdev */
+ goto done;
+ default:
+ /* skip unknown values */
+ goto done;
+ }
+ if (item[i].flags & WPROBE_F_KEEPSTAT) {
+ NLA_PUT_U64(msg, WPROBE_VAL_SUM, val[i].s);
+ NLA_PUT_U64(msg, WPROBE_VAL_SUM_SQ, val[i].ss);
+ NLA_PUT_U32(msg, WPROBE_VAL_SAMPLES, (u32) val[i].n);
+ }
+done:
+ genlmsg_end(msg, hdr);
+ return true;
+
+nla_put_failure:
+ genlmsg_cancel(msg, hdr);
+ return false;
+}
+
+static bool
+wprobe_send_item_info(struct sk_buff *msg, struct netlink_callback *cb,
+ struct wprobe_iface *dev,
+ const struct wprobe_item *item, int i)
+{
+ struct genlmsghdr *hdr;
+
+ hdr = genlmsg_put(msg, NETLINK_CB(cb->skb).pid, cb->nlh->nlmsg_seq,
+ &wprobe_fam, NLM_F_MULTI, WPROBE_CMD_GET_LIST);
+
+ if ((i == 0) && (dev->addr != NULL))
+ NLA_PUT(msg, WPROBE_ATTR_MAC, 6, dev->addr);
+ NLA_PUT_U32(msg, WPROBE_ATTR_ID, (u32) i);
+ NLA_PUT_STRING(msg, WPROBE_ATTR_NAME, item[i].name);
+ NLA_PUT_U8(msg, WPROBE_ATTR_TYPE, item[i].type);
+ NLA_PUT_U32(msg, WPROBE_ATTR_FLAGS, item[i].flags);
+ genlmsg_end(msg, hdr);
+ return true;
+
+nla_put_failure:
+ genlmsg_cancel(msg, hdr);
+ return false;
+}
+
+
+static struct wprobe_link *
+wprobe_find_link(struct wprobe_iface *dev, const char *mac)
+{
+ struct wprobe_link *l;
+
+ list_for_each_entry_rcu(l, &dev->links, list) {
+ if (!memcmp(l->addr, mac, 6))
+ return l;
+ }
+ return NULL;
+}
+
+static bool
+wprobe_dump_link(struct sk_buff *msg, struct wprobe_link *l, struct netlink_callback *cb)
+{
+ struct genlmsghdr *hdr;
+
+ hdr = genlmsg_put(msg, NETLINK_CB(cb->skb).pid, cb->nlh->nlmsg_seq,
+ &wprobe_fam, NLM_F_MULTI, WPROBE_CMD_GET_LINKS);
+ if (!hdr)
+ return false;
+
+ NLA_PUT(msg, WPROBE_ATTR_MAC, 6, l->addr);
+ genlmsg_end(msg, hdr);
+ return true;
+
+nla_put_failure:
+ genlmsg_cancel(msg, hdr);
+ return false;
+}
+
+static int
+wprobe_dump_links(struct sk_buff *skb, struct netlink_callback *cb)
+{
+ struct wprobe_iface *dev = (struct wprobe_iface *)cb->args[0];
+ struct wprobe_link *l;
+ int err = 0;
+ int i = 0;
+
+ if (!dev) {
+ err = nlmsg_parse(cb->nlh, GENL_HDRLEN + wprobe_fam.hdrsize,
+ wprobe_fam.attrbuf, wprobe_fam.maxattr, wprobe_policy);
+ if (err)
+ goto done;
+
+ dev = wprobe_get_dev(wprobe_fam.attrbuf[WPROBE_ATTR_INTERFACE]);
+ if (!dev) {
+ err = -ENODEV;
+ goto done;
+ }
+
+ cb->args[0] = (long) dev;
+ } else {
+ if (!wprobe_check_ptr(&wprobe_if, &dev->list)) {
+ err = -ENODEV;
+ goto done;
+ }
+ }
+
+ rcu_read_lock();
+ list_for_each_entry_rcu(l, &dev->links, list) {
+ if (i < cb->args[1])
+ continue;
+
+ if (unlikely(!wprobe_dump_link(skb, l, cb)))
+ break;
+
+ i++;
+ }
+ cb->args[1] = i;
+ rcu_read_unlock();
+ err = skb->len;
+done:
+ return err;
+}
+static void
+wprobe_scale_stats(const struct wprobe_item *item, struct wprobe_value *val, int n, u32 flags)
+{
+ u32 scale = 0;
+ int i;
+
+ for (i = 0; i < n; i++) {
+ if (!(item[i].flags & WPROBE_F_KEEPSTAT))
+ continue;
+
+ /* reset statistics, if requested */
+ if (flags & WPROBE_F_RESET)
+ scale = val[i].n;
+ else if (wprobe_fam.attrbuf[WPROBE_ATTR_SCALE])
+ scale = nla_get_u32(wprobe_fam.attrbuf[WPROBE_ATTR_SCALE]);
+
+ if ((scale > 0) && (val[i].n > scale)) {
+ val[i].s = div_s64(val[i].s, scale);
+ val[i].ss = div_s64(val[i].ss, scale);
+ val[i].n = val[i].n / scale + 1;
+ }
+ }
+}
+
+#define WPROBE_F_LINK (1 << 31) /* for internal use */
+static int
+wprobe_dump_info(struct sk_buff *skb, struct netlink_callback *cb)
+{
+ struct wprobe_iface *dev = (struct wprobe_iface *)cb->args[0];
+ struct wprobe_link *l = (struct wprobe_link *)cb->args[1];
+ struct wprobe_value *val;
+ const struct wprobe_item *item;
+ struct genlmsghdr *hdr;
+ unsigned long flags;
+ int cmd, n, i = cb->args[3];
+ u32 vflags = cb->args[2];
+ int err = 0;
+
+ hdr = (struct genlmsghdr *)nlmsg_data(cb->nlh);
+ cmd = hdr->cmd;
+
+ /* since the attribute value list might be too big for a single netlink
+ * message, the device, link and offset get stored in the netlink callback.
+ * if this is the first request, we need to do the full lookup for the device.
+ *
+ * access to the device and link structure is synchronized through rcu.
+ */
+ rcu_read_lock();
+ if (!dev) {
+ err = nlmsg_parse(cb->nlh, GENL_HDRLEN + wprobe_fam.hdrsize,
+ wprobe_fam.attrbuf, wprobe_fam.maxattr, wprobe_policy);
+ if (err)
+ goto done;
+
+ err = -ENOENT;
+ dev = wprobe_get_dev(wprobe_fam.attrbuf[WPROBE_ATTR_INTERFACE]);
+ if (!dev)
+ goto done;
+
+ if (cmd == WPROBE_CMD_GET_INFO) {
+ if (wprobe_fam.attrbuf[WPROBE_ATTR_MAC]) {
+ l = wprobe_find_link(dev, nla_data(wprobe_fam.attrbuf[WPROBE_ATTR_MAC]));
+ if (!l)
+ goto done;
+
+ vflags = l->flags;
+ }
+
+ if (l) {
+ item = dev->link_items;
+ n = dev->n_link_items;
+ val = l->val;
+ } else {
+ item = dev->global_items;
+ n = dev->n_global_items;
+ val = dev->val;
+ }
+
+ /* sync data and move to temp storage for the query */
+ spin_lock_irqsave(&dev->lock, flags);
+ err = wprobe_sync_data(dev, l, true);
+ if (!err)
+ memcpy(dev->query_val, val, n * sizeof(struct wprobe_value));
+ wprobe_scale_stats(item, val, n, flags);
+ spin_unlock_irqrestore(&dev->lock, flags);
+
+ if (err)
+ goto done;
+ }
+
+ if (wprobe_fam.attrbuf[WPROBE_ATTR_FLAGS])
+ vflags |= nla_get_u32(wprobe_fam.attrbuf[WPROBE_ATTR_FLAGS]);
+
+ if (wprobe_fam.attrbuf[WPROBE_ATTR_MAC])
+ vflags |= WPROBE_F_LINK;
+
+ cb->args[0] = (long) dev;
+ cb->args[1] = (long) l;
+ cb->args[2] = vflags;
+ cb->args[3] = 0;
+ } else {
+ /* when pulling pointers from the callback, validate them
+ * against the list using rcu to make sure that we won't
+ * dereference pointers to free'd memory after the last
+ * grace period */
+ err = -ENOENT;
+ if (!wprobe_check_ptr(&wprobe_if, &dev->list))
+ goto done;
+
+ if (l && !wprobe_check_ptr(&dev->links, &l->list))
+ goto done;
+ }
+
+ if (vflags & WPROBE_F_LINK) {
+ item = dev->link_items;
+ n = dev->n_link_items;
+ } else {
+ item = dev->global_items;
+ n = dev->n_global_items;
+ }
+
+ err = 0;
+ switch(cmd) {
+ case WPROBE_CMD_GET_INFO:
+ while (i < n) {
+ if (!wprobe_send_item_value(skb, cb, dev, l, item, i, vflags))
+ break;
+ i++;
+ }
+ break;
+ case WPROBE_CMD_GET_LIST:
+ while (i < n) {
+ if (!wprobe_send_item_info(skb, cb, dev, item, i))
+ break;
+ i++;
+ }
+ break;
+ default:
+ err = -EINVAL;
+ goto done;
+ }
+ cb->args[3] = i;
+ err = skb->len;
+
+done:
+ rcu_read_unlock();
+ return err;
+}
+#undef WPROBE_F_LINK
+
+static int
+wprobe_measure(struct sk_buff *skb, struct genl_info *info)
+{
+ struct wprobe_iface *dev;
+ struct wprobe_link *l = NULL;
+ int err = -ENOENT;
+
+ rcu_read_lock();
+ dev = wprobe_get_dev(info->attrs[WPROBE_ATTR_INTERFACE]);
+ if (!dev)
+ goto done;
+
+ if (info->attrs[WPROBE_ATTR_MAC]) {
+ l = wprobe_find_link(dev, nla_data(wprobe_fam.attrbuf[WPROBE_ATTR_MAC]));
+ if (!l)
+ goto done;
+ }
+
+ err = wprobe_sync_data(dev, l, false);
+
+done:
+ rcu_read_unlock();
+ return err;
+}
+
+static struct genl_ops wprobe_ops[] = {
+ {
+ .cmd = WPROBE_CMD_GET_INFO,
+ .dumpit = wprobe_dump_info,
+ .policy = wprobe_policy,
+ },
+ {
+ .cmd = WPROBE_CMD_GET_LIST,
+ .dumpit = wprobe_dump_info,
+ .policy = wprobe_policy,
+ },
+ {
+ .cmd = WPROBE_CMD_MEASURE,
+ .doit = wprobe_measure,
+ .policy = wprobe_policy,
+ },
+ {
+ .cmd = WPROBE_CMD_GET_LINKS,
+ .dumpit = wprobe_dump_links,
+ .policy = wprobe_policy,
+ }
+};
+
+static void __exit
+wprobe_exit(void)
+{
+ BUG_ON(!list_empty(&wprobe_if));
+ genl_unregister_family(&wprobe_fam);
+}
+
+
+static int __init
+wprobe_init(void)
+{
+ int i, err;
+
+ spin_lock_init(&wprobe_lock);
+ INIT_LIST_HEAD(&wprobe_if);
+
+ err = genl_register_family(&wprobe_fam);
+ if (err)
+ return err;
+
+ for (i = 0; i < ARRAY_SIZE(wprobe_ops); i++) {
+ err = genl_register_ops(&wprobe_fam, &wprobe_ops[i]);
+ if (err)
+ goto error;
+ }
+
+ return 0;
+
+error:
+ genl_unregister_family(&wprobe_fam);
+ return err;
+}
+
+module_init(wprobe_init);
+module_exit(wprobe_exit);
+MODULE_LICENSE("GPL");
+
--- /dev/null
+/*
+ * wprobe-core.c: Wireless probe interface dummy driver
+ * Copyright (C) 2008-2009 Felix Fietkau <nbd@openwrt.org>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/kernel.h>
+#include <linux/version.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/spinlock.h>
+#include <linux/random.h>
+#include <linux/wprobe.h>
+
+static const char local_addr[] = "\x00\x13\x37\xba\xbe\x00";
+
+enum dummy_global_values {
+ DUMMY_GLOBAL_MEDIUM_BUSY
+};
+enum dummy_link_values {
+ DUMMY_LINK_SNR
+};
+
+struct wprobe_item dummy_perlink[] = {
+ [DUMMY_LINK_SNR] = {
+ .name = "snr",
+ .type = WPROBE_VAL_U8,
+ .flags = WPROBE_F_KEEPSTAT,
+ },
+};
+
+struct wprobe_item dummy_globals[] = {
+ [DUMMY_GLOBAL_MEDIUM_BUSY] = {
+ .name = "medium_busy",
+ .type = WPROBE_VAL_U8,
+ .flags = WPROBE_F_KEEPSTAT,
+ }
+};
+
+int dummy_sync(struct wprobe_iface *dev, struct wprobe_link *l, struct wprobe_value *val, bool measure)
+{
+ u8 intval = 0;
+
+ get_random_bytes(&intval, 1);
+ if (l) {
+ WPROBE_FILL_BEGIN(val, dummy_perlink);
+ WPROBE_SET(DUMMY_LINK_SNR, U8, (intval % 40));
+ WPROBE_FILL_END();
+ } else {
+ WPROBE_FILL_BEGIN(val, dummy_globals);
+ WPROBE_SET(DUMMY_GLOBAL_MEDIUM_BUSY, U8, (intval % 100));
+ WPROBE_FILL_END();
+ }
+ return 0;
+}
+
+static struct wprobe_iface dummy_dev = {
+ .name = "dummy",
+ .addr = local_addr,
+ .link_items = dummy_perlink,
+ .n_link_items = ARRAY_SIZE(dummy_perlink),
+ .global_items = dummy_globals,
+ .n_global_items = ARRAY_SIZE(dummy_globals),
+ .sync_data = dummy_sync,
+};
+
+static struct wprobe_link dummy_link;
+
+static int __init
+wprobe_dummy_init(void)
+{
+ wprobe_add_iface(&dummy_dev);
+ wprobe_add_link(&dummy_dev, &dummy_link, "\x00\x13\x37\xda\xda\x00");
+ return 0;
+}
+
+static void __exit
+wprobe_dummy_exit(void)
+{
+ wprobe_remove_link(&dummy_dev, &dummy_link);
+ wprobe_remove_iface(&dummy_dev);
+}
+
+module_init(wprobe_dummy_init);
+module_exit(wprobe_dummy_exit);
+
+MODULE_LICENSE("GPL");
--- /dev/null
+CFLAGS = -O2
+CPPFLAGS ?= -I../kernel
+WFLAGS = -Wall -Werror
+LDFLAGS =
+
+LIBNL = -lnl
+LIBM = -lm
+LIBS = $(LIBNL) $(LIBM)
+
+all: libwprobe.a wprobe-info
+
+libwprobe.a: wprobe.o
+ rm -f $@
+ $(AR) rcu $@ $^
+ $(RANLIB) $@
+
+%.o: %.c
+ $(CC) $(WFLAGS) -c -o $@ $(CPPFLAGS) $(CFLAGS) $<
+
+wprobe-info: wprobe-info.o wprobe.o
+ $(CC) -o $@ $^ $(LDFLAGS) $(LIBS)
--- /dev/null
+#ifndef _LINUX_LIST_H
+#define _LINUX_LIST_H
+
+#include <stddef.h>
+/**
+ * container_of - cast a member of a structure out to the containing structure
+ * @ptr: the pointer to the member.
+ * @type: the type of the container struct this is embedded in.
+ * @member: the name of the member within the struct.
+ *
+ */
+#ifndef container_of
+#define container_of(ptr, type, member) ( \
+ (type *)( (char *)ptr - offsetof(type,member) ))
+#endif
+
+
+/*
+ * Simple doubly linked list implementation.
+ *
+ * Some of the internal functions ("__xxx") are useful when
+ * manipulating whole lists rather than single entries, as
+ * sometimes we already know the next/prev entries and we can
+ * generate better code by using them directly rather than
+ * using the generic single-entry routines.
+ */
+
+struct list_head {
+ struct list_head *next, *prev;
+};
+
+#define LIST_HEAD_INIT(name) { &(name), &(name) }
+
+#define LIST_HEAD(name) \
+ struct list_head name = LIST_HEAD_INIT(name)
+
+static inline void INIT_LIST_HEAD(struct list_head *list)
+{
+ list->next = list;
+ list->prev = list;
+}
+
+/*
+ * Insert a new entry between two known consecutive entries.
+ *
+ * This is only for internal list manipulation where we know
+ * the prev/next entries already!
+ */
+static inline void __list_add(struct list_head *new,
+ struct list_head *prev,
+ struct list_head *next)
+{
+ next->prev = new;
+ new->next = next;
+ new->prev = prev;
+ prev->next = new;
+}
+
+/**
+ * list_add - add a new entry
+ * @new: new entry to be added
+ * @head: list head to add it after
+ *
+ * Insert a new entry after the specified head.
+ * This is good for implementing stacks.
+ */
+static inline void list_add(struct list_head *new, struct list_head *head)
+{
+ __list_add(new, head, head->next);
+}
+
+
+/**
+ * list_add_tail - add a new entry
+ * @new: new entry to be added
+ * @head: list head to add it before
+ *
+ * Insert a new entry before the specified head.
+ * This is useful for implementing queues.
+ */
+static inline void list_add_tail(struct list_head *new, struct list_head *head)
+{
+ __list_add(new, head->prev, head);
+}
+
+
+/*
+ * Delete a list entry by making the prev/next entries
+ * point to each other.
+ *
+ * This is only for internal list manipulation where we know
+ * the prev/next entries already!
+ */
+static inline void __list_del(struct list_head * prev, struct list_head * next)
+{
+ next->prev = prev;
+ prev->next = next;
+}
+
+/**
+ * list_del - deletes entry from list.
+ * @entry: the element to delete from the list.
+ * Note: list_empty() on entry does not return true after this, the entry is
+ * in an undefined state.
+ */
+static inline void list_del(struct list_head *entry)
+{
+ __list_del(entry->prev, entry->next);
+ entry->next = NULL;
+ entry->prev = NULL;
+}
+
+/**
+ * list_replace - replace old entry by new one
+ * @old : the element to be replaced
+ * @new : the new element to insert
+ *
+ * If @old was empty, it will be overwritten.
+ */
+static inline void list_replace(struct list_head *old,
+ struct list_head *new)
+{
+ new->next = old->next;
+ new->next->prev = new;
+ new->prev = old->prev;
+ new->prev->next = new;
+}
+
+static inline void list_replace_init(struct list_head *old,
+ struct list_head *new)
+{
+ list_replace(old, new);
+ INIT_LIST_HEAD(old);
+}
+
+/**
+ * list_del_init - deletes entry from list and reinitialize it.
+ * @entry: the element to delete from the list.
+ */
+static inline void list_del_init(struct list_head *entry)
+{
+ __list_del(entry->prev, entry->next);
+ INIT_LIST_HEAD(entry);
+}
+
+/**
+ * list_move - delete from one list and add as another's head
+ * @list: the entry to move
+ * @head: the head that will precede our entry
+ */
+static inline void list_move(struct list_head *list, struct list_head *head)
+{
+ __list_del(list->prev, list->next);
+ list_add(list, head);
+}
+
+/**
+ * list_move_tail - delete from one list and add as another's tail
+ * @list: the entry to move
+ * @head: the head that will follow our entry
+ */
+static inline void list_move_tail(struct list_head *list,
+ struct list_head *head)
+{
+ __list_del(list->prev, list->next);
+ list_add_tail(list, head);
+}
+
+/**
+ * list_is_last - tests whether @list is the last entry in list @head
+ * @list: the entry to test
+ * @head: the head of the list
+ */
+static inline int list_is_last(const struct list_head *list,
+ const struct list_head *head)
+{
+ return list->next == head;
+}
+
+/**
+ * list_empty - tests whether a list is empty
+ * @head: the list to test.
+ */
+static inline int list_empty(const struct list_head *head)
+{
+ return head->next == head;
+}
+
+/**
+ * list_empty_careful - tests whether a list is empty and not being modified
+ * @head: the list to test
+ *
+ * Description:
+ * tests whether a list is empty _and_ checks that no other CPU might be
+ * in the process of modifying either member (next or prev)
+ *
+ * NOTE: using list_empty_careful() without synchronization
+ * can only be safe if the only activity that can happen
+ * to the list entry is list_del_init(). Eg. it cannot be used
+ * if another CPU could re-list_add() it.
+ */
+static inline int list_empty_careful(const struct list_head *head)
+{
+ struct list_head *next = head->next;
+ return (next == head) && (next == head->prev);
+}
+
+static inline void __list_splice(struct list_head *list,
+ struct list_head *head)
+{
+ struct list_head *first = list->next;
+ struct list_head *last = list->prev;
+ struct list_head *at = head->next;
+
+ first->prev = head;
+ head->next = first;
+
+ last->next = at;
+ at->prev = last;
+}
+
+/**
+ * list_splice - join two lists
+ * @list: the new list to add.
+ * @head: the place to add it in the first list.
+ */
+static inline void list_splice(struct list_head *list, struct list_head *head)
+{
+ if (!list_empty(list))
+ __list_splice(list, head);
+}
+
+/**
+ * list_splice_init - join two lists and reinitialise the emptied list.
+ * @list: the new list to add.
+ * @head: the place to add it in the first list.
+ *
+ * The list at @list is reinitialised
+ */
+static inline void list_splice_init(struct list_head *list,
+ struct list_head *head)
+{
+ if (!list_empty(list)) {
+ __list_splice(list, head);
+ INIT_LIST_HEAD(list);
+ }
+}
+
+/**
+ * list_entry - get the struct for this entry
+ * @ptr: the &struct list_head pointer.
+ * @type: the type of the struct this is embedded in.
+ * @member: the name of the list_struct within the struct.
+ */
+#define list_entry(ptr, type, member) \
+ container_of(ptr, type, member)
+
+/**
+ * list_first_entry - get the first element from a list
+ * @ptr: the list head to take the element from.
+ * @type: the type of the struct this is embedded in.
+ * @member: the name of the list_struct within the struct.
+ *
+ * Note, that list is expected to be not empty.
+ */
+#define list_first_entry(ptr, type, member) \
+ list_entry((ptr)->next, type, member)
+
+/**
+ * list_for_each - iterate over a list
+ * @pos: the &struct list_head to use as a loop cursor.
+ * @head: the head for your list.
+ */
+#define list_for_each(pos, head) \
+ for (pos = (head)->next; pos != (head); \
+ pos = pos->next)
+
+/**
+ * __list_for_each - iterate over a list
+ * @pos: the &struct list_head to use as a loop cursor.
+ * @head: the head for your list.
+ *
+ * This variant differs from list_for_each() in that it's the
+ * simplest possible list iteration code, no prefetching is done.
+ * Use this for code that knows the list to be very short (empty
+ * or 1 entry) most of the time.
+ */
+#define __list_for_each(pos, head) \
+ for (pos = (head)->next; pos != (head); pos = pos->next)
+
+/**
+ * list_for_each_prev - iterate over a list backwards
+ * @pos: the &struct list_head to use as a loop cursor.
+ * @head: the head for your list.
+ */
+#define list_for_each_prev(pos, head) \
+ for (pos = (head)->prev; pos != (head); \
+ pos = pos->prev)
+
+/**
+ * list_for_each_safe - iterate over a list safe against removal of list entry
+ * @pos: the &struct list_head to use as a loop cursor.
+ * @n: another &struct list_head to use as temporary storage
+ * @head: the head for your list.
+ */
+#define list_for_each_safe(pos, n, head) \
+ for (pos = (head)->next, n = pos->next; pos != (head); \
+ pos = n, n = pos->next)
+
+/**
+ * list_for_each_prev_safe - iterate over a list backwards safe against removal of list entry
+ * @pos: the &struct list_head to use as a loop cursor.
+ * @n: another &struct list_head to use as temporary storage
+ * @head: the head for your list.
+ */
+#define list_for_each_prev_safe(pos, n, head) \
+ for (pos = (head)->prev, n = pos->prev; \
+ pos != (head); \
+ pos = n, n = pos->prev)
+
+/**
+ * list_for_each_entry - iterate over list of given type
+ * @pos: the type * to use as a loop cursor.
+ * @head: the head for your list.
+ * @member: the name of the list_struct within the struct.
+ */
+#define list_for_each_entry(pos, head, member) \
+ for (pos = list_entry((head)->next, typeof(*pos), member); \
+ &pos->member != (head); \
+ pos = list_entry(pos->member.next, typeof(*pos), member))
+
+/**
+ * list_for_each_entry_reverse - iterate backwards over list of given type.
+ * @pos: the type * to use as a loop cursor.
+ * @head: the head for your list.
+ * @member: the name of the list_struct within the struct.
+ */
+#define list_for_each_entry_reverse(pos, head, member) \
+ for (pos = list_entry((head)->prev, typeof(*pos), member); \
+ &pos->member != (head); \
+ pos = list_entry(pos->member.prev, typeof(*pos), member))
+
+/**
+ * list_prepare_entry - prepare a pos entry for use in list_for_each_entry_continue()
+ * @pos: the type * to use as a start point
+ * @head: the head of the list
+ * @member: the name of the list_struct within the struct.
+ *
+ * Prepares a pos entry for use as a start point in list_for_each_entry_continue().
+ */
+#define list_prepare_entry(pos, head, member) \
+ ((pos) ? : list_entry(head, typeof(*pos), member))
+
+/**
+ * list_for_each_entry_continue - continue iteration over list of given type
+ * @pos: the type * to use as a loop cursor.
+ * @head: the head for your list.
+ * @member: the name of the list_struct within the struct.
+ *
+ * Continue to iterate over list of given type, continuing after
+ * the current position.
+ */
+#define list_for_each_entry_continue(pos, head, member) \
+ for (pos = list_entry(pos->member.next, typeof(*pos), member); \
+ &pos->member != (head); \
+ pos = list_entry(pos->member.next, typeof(*pos), member))
+
+/**
+ * list_for_each_entry_continue_reverse - iterate backwards from the given point
+ * @pos: the type * to use as a loop cursor.
+ * @head: the head for your list.
+ * @member: the name of the list_struct within the struct.
+ *
+ * Start to iterate over list of given type backwards, continuing after
+ * the current position.
+ */
+#define list_for_each_entry_continue_reverse(pos, head, member) \
+ for (pos = list_entry(pos->member.prev, typeof(*pos), member); \
+ &pos->member != (head); \
+ pos = list_entry(pos->member.prev, typeof(*pos), member))
+
+/**
+ * list_for_each_entry_from - iterate over list of given type from the current point
+ * @pos: the type * to use as a loop cursor.
+ * @head: the head for your list.
+ * @member: the name of the list_struct within the struct.
+ *
+ * Iterate over list of given type, continuing from current position.
+ */
+#define list_for_each_entry_from(pos, head, member) \
+ for (; &pos->member != (head); \
+ pos = list_entry(pos->member.next, typeof(*pos), member))
+
+/**
+ * list_for_each_entry_safe - iterate over list of given type safe against removal of list entry
+ * @pos: the type * to use as a loop cursor.
+ * @n: another type * to use as temporary storage
+ * @head: the head for your list.
+ * @member: the name of the list_struct within the struct.
+ */
+#define list_for_each_entry_safe(pos, n, head, member) \
+ for (pos = list_entry((head)->next, typeof(*pos), member), \
+ n = list_entry(pos->member.next, typeof(*pos), member); \
+ &pos->member != (head); \
+ pos = n, n = list_entry(n->member.next, typeof(*n), member))
+
+/**
+ * list_for_each_entry_safe_continue
+ * @pos: the type * to use as a loop cursor.
+ * @n: another type * to use as temporary storage
+ * @head: the head for your list.
+ * @member: the name of the list_struct within the struct.
+ *
+ * Iterate over list of given type, continuing after current point,
+ * safe against removal of list entry.
+ */
+#define list_for_each_entry_safe_continue(pos, n, head, member) \
+ for (pos = list_entry(pos->member.next, typeof(*pos), member), \
+ n = list_entry(pos->member.next, typeof(*pos), member); \
+ &pos->member != (head); \
+ pos = n, n = list_entry(n->member.next, typeof(*n), member))
+
+/**
+ * list_for_each_entry_safe_from
+ * @pos: the type * to use as a loop cursor.
+ * @n: another type * to use as temporary storage
+ * @head: the head for your list.
+ * @member: the name of the list_struct within the struct.
+ *
+ * Iterate over list of given type from current point, safe against
+ * removal of list entry.
+ */
+#define list_for_each_entry_safe_from(pos, n, head, member) \
+ for (n = list_entry(pos->member.next, typeof(*pos), member); \
+ &pos->member != (head); \
+ pos = n, n = list_entry(n->member.next, typeof(*n), member))
+
+/**
+ * list_for_each_entry_safe_reverse
+ * @pos: the type * to use as a loop cursor.
+ * @n: another type * to use as temporary storage
+ * @head: the head for your list.
+ * @member: the name of the list_struct within the struct.
+ *
+ * Iterate backwards over list of given type, safe against removal
+ * of list entry.
+ */
+#define list_for_each_entry_safe_reverse(pos, n, head, member) \
+ for (pos = list_entry((head)->prev, typeof(*pos), member), \
+ n = list_entry(pos->member.prev, typeof(*pos), member); \
+ &pos->member != (head); \
+ pos = n, n = list_entry(n->member.prev, typeof(*n), member))
+
+/*
+ * Double linked lists with a single pointer list head.
+ * Mostly useful for hash tables where the two pointer list head is
+ * too wasteful.
+ * You lose the ability to access the tail in O(1).
+ */
+
+struct hlist_head {
+ struct hlist_node *first;
+};
+
+struct hlist_node {
+ struct hlist_node *next, **pprev;
+};
+
+#define HLIST_HEAD_INIT { .first = NULL }
+#define HLIST_HEAD(name) struct hlist_head name = { .first = NULL }
+#define INIT_HLIST_HEAD(ptr) ((ptr)->first = NULL)
+static inline void INIT_HLIST_NODE(struct hlist_node *h)
+{
+ h->next = NULL;
+ h->pprev = NULL;
+}
+
+static inline int hlist_unhashed(const struct hlist_node *h)
+{
+ return !h->pprev;
+}
+
+static inline int hlist_empty(const struct hlist_head *h)
+{
+ return !h->first;
+}
+
+static inline void __hlist_del(struct hlist_node *n)
+{
+ struct hlist_node *next = n->next;
+ struct hlist_node **pprev = n->pprev;
+ *pprev = next;
+ if (next)
+ next->pprev = pprev;
+}
+
+static inline void hlist_del(struct hlist_node *n)
+{
+ __hlist_del(n);
+ n->next = NULL;
+ n->pprev = NULL;
+}
+
+static inline void hlist_del_init(struct hlist_node *n)
+{
+ if (!hlist_unhashed(n)) {
+ __hlist_del(n);
+ INIT_HLIST_NODE(n);
+ }
+}
+
+
+static inline void hlist_add_head(struct hlist_node *n, struct hlist_head *h)
+{
+ struct hlist_node *first = h->first;
+ n->next = first;
+ if (first)
+ first->pprev = &n->next;
+ h->first = n;
+ n->pprev = &h->first;
+}
+
+
+/* next must be != NULL */
+static inline void hlist_add_before(struct hlist_node *n,
+ struct hlist_node *next)
+{
+ n->pprev = next->pprev;
+ n->next = next;
+ next->pprev = &n->next;
+ *(n->pprev) = n;
+}
+
+static inline void hlist_add_after(struct hlist_node *n,
+ struct hlist_node *next)
+{
+ next->next = n->next;
+ n->next = next;
+ next->pprev = &n->next;
+
+ if(next->next)
+ next->next->pprev = &next->next;
+}
+
+#define hlist_entry(ptr, type, member) container_of(ptr,type,member)
+
+#define hlist_for_each(pos, head) \
+ for (pos = (head)->first; pos; pos = pos->next)
+
+#define hlist_for_each_safe(pos, n, head) \
+ for (pos = (head)->first; pos; pos = n)
+
+/**
+ * hlist_for_each_entry - iterate over list of given type
+ * @tpos: the type * to use as a loop cursor.
+ * @pos: the &struct hlist_node to use as a loop cursor.
+ * @head: the head for your list.
+ * @member: the name of the hlist_node within the struct.
+ */
+#define hlist_for_each_entry(tpos, pos, head, member) \
+ for (pos = (head)->first; pos && \
+ ({ tpos = hlist_entry(pos, typeof(*tpos), member); 1;}); \
+ pos = pos->next)
+
+/**
+ * hlist_for_each_entry_continue - iterate over a hlist continuing after current point
+ * @tpos: the type * to use as a loop cursor.
+ * @pos: the &struct hlist_node to use as a loop cursor.
+ * @member: the name of the hlist_node within the struct.
+ */
+#define hlist_for_each_entry_continue(tpos, pos, member) \
+ for (pos = (pos)->next; pos && \
+ ({ tpos = hlist_entry(pos, typeof(*tpos), member); 1;}); \
+ pos = pos->next)
+
+/**
+ * hlist_for_each_entry_from - iterate over a hlist continuing from current point
+ * @tpos: the type * to use as a loop cursor.
+ * @pos: the &struct hlist_node to use as a loop cursor.
+ * @member: the name of the hlist_node within the struct.
+ */
+#define hlist_for_each_entry_from(tpos, pos, member) \
+ for (; pos && \
+ ({ tpos = hlist_entry(pos, typeof(*tpos), member); 1;}); \
+ pos = pos->next)
+
+/**
+ * hlist_for_each_entry_safe - iterate over list of given type safe against removal of list entry
+ * @tpos: the type * to use as a loop cursor.
+ * @pos: the &struct hlist_node to use as a loop cursor.
+ * @n: another &struct hlist_node to use as temporary storage
+ * @head: the head for your list.
+ * @member: the name of the hlist_node within the struct.
+ */
+#define hlist_for_each_entry_safe(tpos, pos, n, head, member) \
+ for (pos = (head)->first; \
+ pos && ({ n = pos->next; 1; }) && \
+ ({ tpos = hlist_entry(pos, typeof(*tpos), member); 1;}); \
+ pos = n)
+
+#endif
--- /dev/null
+/*
+ * wprobe-test.c: Wireless probe user space test code
+ * Copyright (C) 2008-2009 Felix Fietkau <nbd@openwrt.org>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <inttypes.h>
+#include <errno.h>
+#include <stdint.h>
+#include <getopt.h>
+#include <stdbool.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <linux/wprobe.h>
+#include "wprobe.h"
+
+static const char *
+wprobe_dump_value(struct wprobe_attribute *attr)
+{
+ static char buf[128];
+
+#define HANDLE_TYPE(_type, _format) \
+ case WPROBE_VAL_##_type: \
+ snprintf(buf, sizeof(buf), _format, attr->val._type); \
+ break
+
+ switch(attr->type) {
+ HANDLE_TYPE(S8, "%d");
+ HANDLE_TYPE(S16, "%d");
+ HANDLE_TYPE(S32, "%d");
+ HANDLE_TYPE(S64, "%lld");
+ HANDLE_TYPE(U8, "%d");
+ HANDLE_TYPE(U16, "%d");
+ HANDLE_TYPE(U32, "%d");
+ HANDLE_TYPE(U64, "%lld");
+ case WPROBE_VAL_STRING:
+ /* FIXME: implement this */
+ default:
+ strncpy(buf, "<unknown>", sizeof(buf));
+ break;
+ }
+ if ((attr->flags & WPROBE_F_KEEPSTAT) &&
+ (attr->val.n > 0)) {
+ int len = strlen(buf);
+ snprintf(buf + len, sizeof(buf) - len, " (avg: %.02f; stdev: %.02f, n=%d)", attr->val.avg, attr->val.stdev, attr->val.n);
+ }
+#undef HANDLE_TYPE
+
+ return buf;
+}
+
+
+static void
+wprobe_dump_data(const char *ifname, struct list_head *gl, struct list_head *ll, struct list_head *ls)
+{
+ struct wprobe_attribute *attr;
+ struct wprobe_link *link;
+ bool first = true;
+
+ fprintf(stderr, "\n");
+ wprobe_request_data(ifname, gl, NULL, 2);
+ list_for_each_entry(attr, gl, list) {
+ fprintf(stderr, (first ?
+ "Global: %s=%s\n" :
+ " %s=%s\n"),
+ attr->name,
+ wprobe_dump_value(attr)
+ );
+ first = false;
+ }
+
+ list_for_each_entry(link, ls, list) {
+ first = true;
+ wprobe_request_data(ifname, ll, link->addr, 2);
+ list_for_each_entry(attr, ll, list) {
+ if (first) {
+ fprintf(stderr,
+ "%02x:%02x:%02x:%02x:%02x:%02x: %s=%s\n",
+ link->addr[0], link->addr[1], link->addr[2],
+ link->addr[3], link->addr[4], link->addr[5],
+ attr->name,
+ wprobe_dump_value(attr));
+ first = false;
+ } else {
+ fprintf(stderr,
+ " %s=%s\n",
+ attr->name,
+ wprobe_dump_value(attr));
+ }
+ }
+ }
+}
+
+static const char *attr_typestr[] = {
+ [0] = "Unknown",
+ [WPROBE_VAL_STRING] = "String",
+ [WPROBE_VAL_U8] = "Unsigned 8 bit",
+ [WPROBE_VAL_U16] = "Unsigned 16 bit",
+ [WPROBE_VAL_U32] = "Unsigned 32 bit",
+ [WPROBE_VAL_U64] = "Unsigned 64 bit",
+ [WPROBE_VAL_S8] = "Signed 8 bit",
+ [WPROBE_VAL_S16] = "Signed 16 bit",
+ [WPROBE_VAL_S32] = "Signed 32 bit",
+ [WPROBE_VAL_S64] = "Signed 64 bit",
+};
+
+static int usage(const char *prog)
+{
+ fprintf(stderr, "Usage: %s <interface>\n", prog);
+ return 1;
+}
+
+int main(int argc, char **argv)
+{
+ struct wprobe_attribute *attr;
+ const char *ifname;
+ LIST_HEAD(global_attr);
+ LIST_HEAD(link_attr);
+ LIST_HEAD(links);
+ int i = 0;
+
+ if (argc < 2)
+ return usage(argv[0]);
+
+ ifname = argv[1];
+
+ if (wprobe_init() != 0)
+ return -1;
+
+ wprobe_dump_attributes(ifname, false, &global_attr, NULL);
+ wprobe_dump_attributes(ifname, true, &link_attr, NULL);
+
+ if (list_empty(&global_attr) &&
+ list_empty(&link_attr)) {
+ fprintf(stderr, "Interface '%s' not found\n", ifname);
+ return -1;
+ }
+
+ list_for_each_entry(attr, &global_attr, list) {
+ fprintf(stderr, "Global attribute: '%s' (%s)\n",
+ attr->name, attr_typestr[attr->type]);
+ }
+ list_for_each_entry(attr, &link_attr, list) {
+ fprintf(stderr, "Link attribute: '%s' (%s)\n",
+ attr->name, attr_typestr[attr->type]);
+ }
+
+ while (1) {
+ usleep(100 * 1000);
+ wprobe_measure(ifname);
+
+ if (i-- > 0)
+ continue;
+
+ i = 10;
+ wprobe_update_links(ifname, &links);
+ wprobe_dump_data(ifname, &global_attr, &link_attr, &links);
+ }
+ wprobe_free();
+
+ return 0;
+}
--- /dev/null
+/*
+ * wprobe.c: Wireless probe user space library
+ * Copyright (C) 2008-2009 Felix Fietkau <nbd@openwrt.org>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <getopt.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <math.h>
+#include <linux/wprobe.h>
+#include <netlink/netlink.h>
+#include <netlink/genl/genl.h>
+#include <netlink/genl/ctrl.h>
+#include <netlink/genl/family.h>
+#include "wprobe.h"
+
+#define DEBUG 1
+#ifdef DEBUG
+#define DPRINTF(fmt, ...) fprintf(stderr, "%s(%d): " fmt, __func__, __LINE__, ##__VA_ARGS__)
+#else
+#define DPRINTF(fmt, ...) do {} while (0)
+#endif
+
+static struct nl_sock *handle = NULL;
+static struct nl_cache *cache = NULL;
+static struct genl_family *family = NULL;
+static struct nlattr *tb[WPROBE_ATTR_LAST+1];
+static struct nla_policy attribute_policy[WPROBE_ATTR_LAST+1] = {
+ [WPROBE_ATTR_ID] = { .type = NLA_U32 },
+ [WPROBE_ATTR_MAC] = { .type = NLA_UNSPEC, .minlen = 6, .maxlen = 6 },
+ [WPROBE_ATTR_NAME] = { .type = NLA_STRING },
+ [WPROBE_ATTR_FLAGS] = { .type = NLA_U32 },
+ [WPROBE_ATTR_TYPE] = { .type = NLA_U8 },
+ [WPROBE_VAL_S8] = { .type = NLA_U8 },
+ [WPROBE_VAL_S16] = { .type = NLA_U16 },
+ [WPROBE_VAL_S32] = { .type = NLA_U32 },
+ [WPROBE_VAL_S64] = { .type = NLA_U64 },
+ [WPROBE_VAL_U8] = { .type = NLA_U8 },
+ [WPROBE_VAL_U16] = { .type = NLA_U16 },
+ [WPROBE_VAL_U32] = { .type = NLA_U32 },
+ [WPROBE_VAL_U64] = { .type = NLA_U64 },
+ [WPROBE_VAL_SUM] = { .type = NLA_U64 },
+ [WPROBE_VAL_SUM_SQ] = { .type = NLA_U64 },
+ [WPROBE_VAL_SAMPLES] = { .type = NLA_U32 },
+};
+
+static int
+error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err, void *arg)
+{
+ int *ret = arg;
+ *ret = err->error;
+ return NL_STOP;
+}
+
+static int
+finish_handler(struct nl_msg *msg, void *arg)
+{
+ int *ret = arg;
+ *ret = 0;
+ return NL_SKIP;
+}
+
+static int
+ack_handler(struct nl_msg *msg, void *arg)
+{
+ int *ret = arg;
+ *ret = 0;
+ return NL_STOP;
+}
+
+
+void
+wprobe_free(void)
+{
+ if (cache)
+ nl_cache_free(cache);
+ if (handle)
+ nl_socket_free(handle);
+ handle = NULL;
+ cache = NULL;
+}
+
+int
+wprobe_init(void)
+{
+ int ret;
+
+ handle = nl_socket_alloc();
+ if (!handle) {
+ DPRINTF("Failed to create handle\n");
+ goto err;
+ }
+
+ if (genl_connect(handle)) {
+ DPRINTF("Failed to connect to generic netlink\n");
+ goto err;
+ }
+
+ ret = genl_ctrl_alloc_cache(handle, &cache);
+ if (ret < 0) {
+ DPRINTF("Failed to allocate netlink cache\n");
+ goto err;
+ }
+
+ family = genl_ctrl_search_by_name(cache, "wprobe");
+ if (!family) {
+ DPRINTF("wprobe API not present\n");
+ goto err;
+ }
+ return 0;
+
+err:
+ wprobe_free();
+ return -EINVAL;
+}
+
+
+static struct nl_msg *
+wprobe_new_msg(const char *ifname, int cmd, bool dump)
+{
+ struct nl_msg *msg;
+ uint32_t flags = 0;
+
+ msg = nlmsg_alloc();
+ if (!msg)
+ return NULL;
+
+ if (dump)
+ flags |= NLM_F_DUMP;
+
+ genlmsg_put(msg, 0, 0, genl_family_get_id(family),
+ 0, flags, cmd, 0);
+
+ NLA_PUT_STRING(msg, WPROBE_ATTR_INTERFACE, ifname);
+nla_put_failure:
+ return msg;
+}
+
+static int
+wprobe_send_msg(struct nl_msg *msg, void *callback, void *arg)
+{
+ struct nl_cb *cb;
+ int err = 0;
+
+ cb = nl_cb_alloc(NL_CB_DEFAULT);
+ if (!cb)
+ goto out_no_cb;
+
+ if (callback)
+ nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, callback, arg);
+
+ err = nl_send_auto_complete(handle, msg);
+ if (err < 0)
+ goto out;
+
+ err = 1;
+
+ nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err);
+ nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err);
+ nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err);
+
+ while (err > 0)
+ nl_recvmsgs(handle, cb);
+
+out:
+ nl_cb_put(cb);
+out_no_cb:
+ nlmsg_free(msg);
+ return err;
+}
+
+struct wprobe_attr_cb {
+ struct list_head *list;
+ char *addr;
+};
+
+static int
+save_attribute_handler(struct nl_msg *msg, void *arg)
+{
+ struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
+ const char *name = "N/A";
+ struct wprobe_attribute *attr;
+ int type = 0;
+ struct wprobe_attr_cb *cb = arg;
+
+ nla_parse(tb, WPROBE_ATTR_LAST, genlmsg_attrdata(gnlh, 0),
+ genlmsg_attrlen(gnlh, 0), attribute_policy);
+
+ if (tb[WPROBE_ATTR_NAME])
+ name = nla_data(tb[WPROBE_ATTR_NAME]);
+
+ attr = malloc(sizeof(struct wprobe_attribute) + strlen(name) + 1);
+ if (!attr)
+ return -1;
+
+ memset(attr, 0, sizeof(struct wprobe_attribute));
+
+ if (tb[WPROBE_ATTR_ID])
+ attr->id = nla_get_u32(tb[WPROBE_ATTR_ID]);
+
+ if (tb[WPROBE_ATTR_MAC] && cb->addr)
+ memcpy(cb->addr, nla_data(tb[WPROBE_ATTR_MAC]), 6);
+
+ if (tb[WPROBE_ATTR_FLAGS])
+ attr->flags = nla_get_u32(tb[WPROBE_ATTR_FLAGS]);
+
+ if (tb[WPROBE_ATTR_TYPE])
+ type = nla_get_u8(tb[WPROBE_ATTR_TYPE]);
+
+ if ((type < WPROBE_VAL_STRING) ||
+ (type > WPROBE_VAL_U64))
+ type = 0;
+
+ attr->type = type;
+ strcpy(attr->name, name);
+ INIT_LIST_HEAD(&attr->list);
+ list_add(&attr->list, cb->list);
+ return 0;
+}
+
+
+int
+wprobe_dump_attributes(const char *ifname, bool link, struct list_head *list, char *addr)
+{
+ struct nl_msg *msg;
+ struct wprobe_attr_cb cb;
+
+ cb.list = list;
+ cb.addr = addr;
+ msg = wprobe_new_msg(ifname, WPROBE_CMD_GET_LIST, true);
+ if (!msg)
+ return -ENOMEM;
+
+ if (link)
+ NLA_PUT(msg, WPROBE_ATTR_MAC, 6, "\x00\x00\x00\x00\x00\x00");
+
+ return wprobe_send_msg(msg, save_attribute_handler, &cb);
+
+nla_put_failure:
+ nlmsg_free(msg);
+ return -EINVAL;
+}
+
+static struct wprobe_link *
+get_link(struct list_head *list, const char *addr)
+{
+ struct wprobe_link *l;
+
+ list_for_each_entry(l, list, list) {
+ if (!memcmp(l->addr, addr, 6)) {
+ list_del_init(&l->list);
+ goto out;
+ }
+ }
+
+ /* no previous link found, allocate a new one */
+ l = malloc(sizeof(struct wprobe_link));
+ if (!l)
+ goto out;
+
+ memset(l, 0, sizeof(struct wprobe_link));
+ memcpy(l->addr, addr, sizeof(l->addr));
+ INIT_LIST_HEAD(&l->list);
+
+out:
+ return l;
+}
+
+struct wprobe_save_cb {
+ struct list_head *list;
+ struct list_head old_list;
+};
+
+static int
+save_link_handler(struct nl_msg *msg, void *arg)
+{
+ struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
+ struct wprobe_link *link;
+ struct wprobe_save_cb *cb = arg;
+ const char *addr;
+
+ nla_parse(tb, WPROBE_ATTR_LAST, genlmsg_attrdata(gnlh, 0),
+ genlmsg_attrlen(gnlh, 0), attribute_policy);
+
+ if (!tb[WPROBE_ATTR_MAC] || (nla_len(tb[WPROBE_ATTR_MAC]) != 6))
+ return -1;
+
+ addr = nla_data(tb[WPROBE_ATTR_MAC]);
+ link = get_link(&cb->old_list, addr);
+ if (!link)
+ return -1;
+
+ if (tb[WPROBE_ATTR_FLAGS])
+ link->flags = nla_get_u32(tb[WPROBE_ATTR_FLAGS]);
+
+ list_add_tail(&link->list, cb->list);
+ return 0;
+}
+
+
+int
+wprobe_update_links(const char *ifname, struct list_head *list)
+{
+ struct wprobe_link *l, *tmp;
+ struct nl_msg *msg;
+ struct wprobe_save_cb cb;
+ int err;
+
+ INIT_LIST_HEAD(&cb.old_list);
+ list_splice_init(list, &cb.old_list);
+ cb.list = list;
+
+ msg = wprobe_new_msg(ifname, WPROBE_CMD_GET_LINKS, true);
+ if (!msg)
+ return -ENOMEM;
+
+ err = wprobe_send_msg(msg, save_link_handler, &cb);
+ if (err < 0)
+ return err;
+
+ list_for_each_entry_safe(l, tmp, &cb.old_list, list) {
+ list_del(&l->list);
+ free(l);
+ }
+
+ return 0;
+}
+
+void
+wprobe_measure(const char *ifname)
+{
+ struct nl_msg *msg;
+
+ msg = wprobe_new_msg(ifname, WPROBE_CMD_MEASURE, false);
+ if (!msg)
+ return;
+
+ wprobe_send_msg(msg, NULL, NULL);
+}
+
+struct wprobe_request_cb {
+ struct list_head *list;
+ struct list_head old_list;
+ char *addr;
+};
+
+static int
+save_attrdata_handler(struct nl_msg *msg, void *arg)
+{
+ struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
+ struct wprobe_request_cb *cb = arg;
+ struct wprobe_attribute *attr;
+ int type, id;
+
+ nla_parse(tb, WPROBE_ATTR_LAST, genlmsg_attrdata(gnlh, 0),
+ genlmsg_attrlen(gnlh, 0), attribute_policy);
+
+ if (!tb[WPROBE_ATTR_ID])
+ return -1;
+
+ if (!tb[WPROBE_ATTR_TYPE])
+ return -1;
+
+ id = nla_get_u32(tb[WPROBE_ATTR_ID]);
+ list_for_each_entry(attr, &cb->old_list, list) {
+ if (attr->id == id)
+ goto found;
+ }
+ /* not found */
+ return -1;
+
+found:
+ list_del_init(&attr->list);
+
+ type = nla_get_u8(tb[WPROBE_ATTR_TYPE]);
+ if (type != attr->type) {
+ DPRINTF("WARNING: type mismatch for %s attribute '%s' (%d != %d)\n",
+ (cb->addr ? "link" : "global"),
+ attr->name,
+ type, attr->type);
+ goto out;
+ }
+
+ if ((type < WPROBE_VAL_STRING) ||
+ (type > WPROBE_VAL_U64))
+ goto out;
+
+ memset(&attr->val, 0, sizeof(attr->val));
+
+#define HANDLE_INT_TYPE(_idx, _type) \
+ case WPROBE_VAL_S##_type: \
+ case WPROBE_VAL_U##_type: \
+ attr->val.U##_type = nla_get_u##_type(tb[_idx]); \
+ break
+
+ switch(type) {
+ HANDLE_INT_TYPE(type, 8);
+ HANDLE_INT_TYPE(type, 16);
+ HANDLE_INT_TYPE(type, 32);
+ HANDLE_INT_TYPE(type, 64);
+ case WPROBE_VAL_STRING:
+ /* unimplemented */
+ break;
+ }
+#undef HANDLE_TYPE
+
+ if (attr->flags & WPROBE_F_KEEPSTAT) {
+ if (tb[WPROBE_VAL_SUM])
+ attr->val.s = nla_get_u64(tb[WPROBE_VAL_SUM]);
+
+ if (tb[WPROBE_VAL_SUM_SQ])
+ attr->val.ss = nla_get_u64(tb[WPROBE_VAL_SUM_SQ]);
+
+ if (tb[WPROBE_VAL_SAMPLES])
+ attr->val.n = nla_get_u32(tb[WPROBE_VAL_SAMPLES]);
+
+ if (attr->val.n > 0) {
+ float avg = ((float) attr->val.s) / attr->val.n;
+ float stdev = sqrt((((float) attr->val.ss) / attr->val.n) - (avg * avg));
+ attr->val.avg = avg;
+ attr->val.stdev = stdev;
+ }
+ }
+
+out:
+ list_add_tail(&attr->list, cb->list);
+ return 0;
+}
+
+
+int
+wprobe_request_data(const char *ifname, struct list_head *attrs, const unsigned char *addr, int scale)
+{
+ struct wprobe_request_cb cb;
+ struct nl_msg *msg;
+ int err;
+
+ msg = wprobe_new_msg(ifname, WPROBE_CMD_GET_INFO, true);
+ if (!msg)
+ return -ENOMEM;
+
+ if (scale < 0)
+ NLA_PUT_U32(msg, WPROBE_ATTR_FLAGS, WPROBE_F_RESET);
+ else if (scale > 0)
+ NLA_PUT_U32(msg, WPROBE_ATTR_SCALE, scale);
+
+ if (addr)
+ NLA_PUT(msg, WPROBE_ATTR_MAC, 6, addr);
+
+nla_put_failure:
+ INIT_LIST_HEAD(&cb.old_list);
+ list_splice_init(attrs, &cb.old_list);
+ cb.list = attrs;
+
+ err = wprobe_send_msg(msg, save_attrdata_handler, &cb);
+ list_splice(&cb.old_list, attrs->prev);
+ return err;
+}
+
+
--- /dev/null
+/*
+ * wprobe.h: Wireless probe user space library
+ * Copyright (C) 2008-2009 Felix Fietkau <nbd@openwrt.org>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef __WPROBE_USER_H
+#define __WPROBE_USER_H
+#include <inttypes.h>
+#include <stdint.h>
+#include <stdbool.h>
+#include "list.h"
+
+/**
+ * struct wprobe_value: data structure for attribute values
+ * @STRING: string value (currently unsupported)
+ * @U8: unsigned 8-bit integer value
+ * @U16: unsigned 16-bit integer value
+ * @U32: unsigned 32-bit integer value
+ * @U64: unsigned 64-bit integer value
+ * @S8: signed 8-bit integer value
+ * @S16: signed 16-bit integer value
+ * @S32: signed 32-bit integer value
+ * @S64: signed 64-bit integer value
+ *
+ * @n: number of sample values
+ * @avg: average value
+ * @stdev: standard deviation
+ * @s: sum of all sample values (internal use)
+ * @ss: sum of all sample values squared (internal use)
+ */
+struct wprobe_value {
+ /* attribute value */
+ union {
+ const char *STRING;
+ uint8_t U8;
+ uint16_t U16;
+ uint32_t U32;
+ uint64_t U64;
+ int8_t S8;
+ int16_t S16;
+ int32_t S32;
+ int64_t S64;
+ };
+ /* statistics */
+ int64_t s, ss;
+ float avg, stdev;
+ unsigned int n;
+};
+
+/**
+ * struct wprobe_attribute: data structures for attribute descriptions
+ * @list: linked list data structure for a list of attributes
+ * @id: attribute id
+ * @type: netlink type for the attribute (see kernel api documentation)
+ * @flags: attribute flags (see kernel api documentation)
+ * @val: cached version of the last netlink query, will be overwritten on each request
+ * @name: attribute name
+ */
+struct wprobe_attribute {
+ struct list_head list;
+ int id;
+ int type;
+ uint32_t flags;
+ struct wprobe_value val;
+ char name[];
+};
+
+/**
+ * struct wprobe_link: data structure for the link description
+ * @list: linked list data structure for a list of links
+ * @flags: link flags (see kernel api documentation)
+ * @addr: mac address of the remote link partner
+ */
+struct wprobe_link {
+ struct list_head list;
+ uint32_t flags;
+ unsigned char addr[6];
+};
+
+/**
+ * wprobe_init: initialize internal data structures and connect to the wprobe netlink api
+ */
+extern int wprobe_init(void);
+
+/**
+ * wprobe_free: free all internally allocated data structures
+ */
+extern void wprobe_free(void);
+
+/**
+ * wprobe_update_links: get a list of all link partners
+ * @ifname: name of the wprobe interface
+ * @list: linked list for storing link descriptions
+ *
+ * when wprobe_update_links is called multiple times, the linked list
+ * is updated with new link partners, old entries are automatically expired
+ */
+extern int wprobe_update_links(const char *ifname, struct list_head *list);
+
+/**
+ * wprobe_measure: start a measurement request for all global attributes
+ * @ifname: name of the wprobe interface
+ *
+ * not all attributes are automatically filled with data, since for some
+ * it may be desirable to control the sampling interval from user space
+ * you can use this function to do that.
+ */
+extern void wprobe_measure(const char *ifname);
+
+/**
+ * wprobe_dump_attributes: create a linked list of available attributes
+ * @ifname: name of the wprobe interface
+ * @link: false: get the list of global attributes; true: get the list of per-link attributes
+ * @list: linked list to store the attributes in
+ * @addr: buffer to store the interface's mac address in (optional)
+ *
+ * attributes must be freed by the caller
+ */
+extern int wprobe_dump_attributes(const char *ifname, bool link, struct list_head *list, char *addr);
+
+/**
+ * wprobe_request_data: request new sampling values for the given list of attributes
+ * @ifname: name of the wprobe interface
+ * @attrs: attribute list
+ * @addr: (optional) mac address of the link partner
+ * @scale: scale down values by a factor (scale < 0: reset statistics entirely)
+ *
+ * if addr is unset, attrs must point to the list of global attributes,
+ * if addr is set, attrs must point to the list of per-link attributes
+ */
+extern int wprobe_request_data(const char *ifname, struct list_head *attrs, const unsigned char *addr, int scale);
+
+#endif
projects / openwrt / svn-archive / archive.git / commitdiff