New: mac80211 stack from the wireless-dev tree
authorPeter Denison <openwrt@marshadder.org>
Thu, 21 Jun 2007 20:42:32 +0000 (20:42 +0000)
committerPeter Denison <openwrt@marshadder.org>
Thu, 21 Jun 2007 20:42:32 +0000 (20:42 +0000)
SVN-Revision: 7692

50 files changed:
package/mac80211/Makefile [new file with mode: 0644]
package/mac80211/src/mac80211/Kconfig [new file with mode: 0644]
package/mac80211/src/mac80211/Makefile [new file with mode: 0644]
package/mac80211/src/mac80211/aes_ccm.c [new file with mode: 0644]
package/mac80211/src/mac80211/aes_ccm.h [new file with mode: 0644]
package/mac80211/src/mac80211/debugfs.c [new file with mode: 0644]
package/mac80211/src/mac80211/debugfs.h [new file with mode: 0644]
package/mac80211/src/mac80211/debugfs_key.c [new file with mode: 0644]
package/mac80211/src/mac80211/debugfs_key.h [new file with mode: 0644]
package/mac80211/src/mac80211/debugfs_netdev.c [new file with mode: 0644]
package/mac80211/src/mac80211/debugfs_netdev.h [new file with mode: 0644]
package/mac80211/src/mac80211/debugfs_sta.c [new file with mode: 0644]
package/mac80211/src/mac80211/debugfs_sta.h [new file with mode: 0644]
package/mac80211/src/mac80211/hostapd_ioctl.h [new file with mode: 0644]
package/mac80211/src/mac80211/ieee80211.c [new file with mode: 0644]
package/mac80211/src/mac80211/ieee80211_cfg.c [new file with mode: 0644]
package/mac80211/src/mac80211/ieee80211_cfg.h [new file with mode: 0644]
package/mac80211/src/mac80211/ieee80211_common.h [new file with mode: 0644]
package/mac80211/src/mac80211/ieee80211_i.h [new file with mode: 0644]
package/mac80211/src/mac80211/ieee80211_iface.c [new file with mode: 0644]
package/mac80211/src/mac80211/ieee80211_ioctl.c [new file with mode: 0644]
package/mac80211/src/mac80211/ieee80211_key.h [new file with mode: 0644]
package/mac80211/src/mac80211/ieee80211_led.c [new file with mode: 0644]
package/mac80211/src/mac80211/ieee80211_led.h [new file with mode: 0644]
package/mac80211/src/mac80211/ieee80211_rate.c [new file with mode: 0644]
package/mac80211/src/mac80211/ieee80211_rate.h [new file with mode: 0644]
package/mac80211/src/mac80211/ieee80211_sta.c [new file with mode: 0644]
package/mac80211/src/mac80211/michael.c [new file with mode: 0644]
package/mac80211/src/mac80211/michael.h [new file with mode: 0644]
package/mac80211/src/mac80211/rc80211_lowest.c [new file with mode: 0644]
package/mac80211/src/mac80211/rc80211_simple.c [new file with mode: 0644]
package/mac80211/src/mac80211/sta_info.c [new file with mode: 0644]
package/mac80211/src/mac80211/sta_info.h [new file with mode: 0644]
package/mac80211/src/mac80211/tkip.c [new file with mode: 0644]
package/mac80211/src/mac80211/tkip.h [new file with mode: 0644]
package/mac80211/src/mac80211/wep.c [new file with mode: 0644]
package/mac80211/src/mac80211/wep.h [new file with mode: 0644]
package/mac80211/src/mac80211/wme.c [new file with mode: 0644]
package/mac80211/src/mac80211/wme.h [new file with mode: 0644]
package/mac80211/src/mac80211/wpa.c [new file with mode: 0644]
package/mac80211/src/mac80211/wpa.h [new file with mode: 0644]
package/mac80211/src/wireless/Kconfig [new file with mode: 0644]
package/mac80211/src/wireless/Makefile [new file with mode: 0644]
package/mac80211/src/wireless/core.c [new file with mode: 0644]
package/mac80211/src/wireless/core.h [new file with mode: 0644]
package/mac80211/src/wireless/nl80211.c [new file with mode: 0644]
package/mac80211/src/wireless/nl80211.h [new file with mode: 0644]
package/mac80211/src/wireless/sysfs.c [new file with mode: 0644]
package/mac80211/src/wireless/sysfs.h [new file with mode: 0644]
package/mac80211/src/wireless/wext.c [new file with mode: 0644]

diff --git a/package/mac80211/Makefile b/package/mac80211/Makefile
new file mode 100644 (file)
index 0000000..30f6093
--- /dev/null
@@ -0,0 +1,62 @@
+# 
+# Copyright (C) 2007 OpenWrt.org
+#
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+#
+# $Id: Makefile 7440 2007-06-02 02:22:01Z nbd $
+
+include $(TOPDIR)/rules.mk
+include $(INCLUDE_DIR)/kernel.mk
+
+PKG_NAME:=mac80211
+PKG_RELEASE:=1
+
+PKG_BUILD_DIR:=$(KERNEL_BUILD_DIR)/$(PKG_NAME)
+
+include $(INCLUDE_DIR)/package.mk
+
+define KernelPackage/mac80211
+  SUBMENU:=Wireless Drivers
+  TITLE:=DeviceScape 802.11 Wireless Networking Stack
+  DEPENDS:=@LINUX_2_6 +kmod-ieee80211
+  DESCRIPTION:=\
+       This package contains the DeviceScape 80211 wireless stack.
+  VERSION:=$(PKG_RELEASE)+$(LINUX_VERSION)-$(BOARD)-$(LINUX_RELEASE)
+  FILES:= \
+       $(PKG_BUILD_DIR)/mac80211/mac80211.$(LINUX_KMOD_SUFFIX) \
+       $(PKG_BUILD_DIR)/mac80211/rc80211_lowest.$(LINUX_KMOD_SUFFIX) \
+       $(PKG_BUILD_DIR)/mac80211/rc80211_simple.$(LINUX_KMOD_SUFFIX) \
+       $(PKG_BUILD_DIR)/wireless/cfg80211.$(LINUX_KMOD_SUFFIX)
+  AUTOLOAD:=$(call AutoLoad,20,cfg80211 mac80211 rc80211_lowest rc80211_simple)
+endef
+
+define Build/Prepare
+       mkdir -p $(PKG_BUILD_DIR)/mac80211
+       $(CP) ./src/mac80211/* $(PKG_BUILD_DIR)/mac80211/
+       mkdir -p $(PKG_BUILD_DIR)/wireless
+       $(CP) ./src/wireless/* $(PKG_BUILD_DIR)/wireless/
+endef
+
+MAKE_OPTS:=-C "$(LINUX_DIR)" \
+       CROSS_COMPILE="$(TARGET_CROSS)" \
+       ARCH="$(LINUX_KARCH)" \
+       EXTRA_CFLAGS="$(BUILDFLAGS)"
+
+define Build/Compile
+       $(MAKE) $(MAKE_OPTS) SUBDIRS="$(PKG_BUILD_DIR)/wireless" modules
+       $(MAKE) $(MAKE_OPTS) SUBDIRS="$(PKG_BUILD_DIR)/mac80211" modules
+endef
+
+#define Build/InstallDev
+#      mkdir -p $(STAGING_DIR)/usr/include/madwifi
+#      $(CP) $(PKG_BUILD_DIR)/include $(STAGING_DIR)/usr/include/madwifi/
+#      mkdir -p $(STAGING_DIR)/usr/include/madwifi/net80211
+#      $(CP) $(PKG_BUILD_DIR)/net80211/*.h $(STAGING_DIR)/usr/include/madwifi/net80211/
+#endef
+
+#define Build/UninstallDev
+#      rm -rf  $(STAGING_DIR)/usr/include/madwifi
+#endef
+
+$(eval $(call KernelPackage,mac80211))
diff --git a/package/mac80211/src/mac80211/Kconfig b/package/mac80211/src/mac80211/Kconfig
new file mode 100644 (file)
index 0000000..a03c886
--- /dev/null
@@ -0,0 +1,82 @@
+config MAC80211
+       tristate "Generic IEEE 802.11 Networking Stack (mac80211)"
+       depends on EXPERIMENTAL
+       select CRYPTO
+       select CRYPTO_ECB
+       select CRYPTO_ARC4
+       select CRYPTO_AES
+       select CRC32
+       select WIRELESS_EXT
+       select CFG80211
+       select NET_SCH_FIFO
+       ---help---
+       This option enables the hardware independent IEEE 802.11
+       networking stack.
+
+config MAC80211_LEDS
+       bool "Enable LED triggers"
+       depends on MAC80211 && LEDS_TRIGGERS
+       ---help---
+       This option enables a few LED triggers for different
+       packet receive/transmit events.
+
+config MAC80211_DEBUGFS
+       bool "Export mac80211 internals in DebugFS"
+       depends on MAC80211 && DEBUG_FS
+       ---help---
+         Select this to see extensive information about
+         the internal state of mac80211 in debugfs.
+
+         Say N unless you know you need this.
+
+config MAC80211_DEBUG
+       bool "Enable debugging output"
+       depends on MAC80211
+       ---help---
+         This option will enable debug tracing output for the
+         ieee80211 network stack.
+
+         If you are not trying to debug or develop the ieee80211
+         subsystem, you most likely want to say N here.
+
+config MAC80211_VERBOSE_DEBUG
+       bool "Verbose debugging output"
+       depends on MAC80211_DEBUG
+
+config MAC80211_LOWTX_FRAME_DUMP
+       bool "Debug frame dumping"
+       depends on MAC80211_DEBUG
+       ---help---
+         Selecting this option will cause the stack to
+         print a message for each frame that is handed
+         to the lowlevel driver for transmission. This
+         message includes all MAC addresses and the
+         frame control field.
+
+         If unsure, say N and insert the debugging code
+         you require into the driver you are debugging.
+
+config TKIP_DEBUG
+       bool "TKIP debugging"
+       depends on MAC80211_DEBUG
+
+config MAC80211_DEBUG_COUNTERS
+       bool "Extra statistics for TX/RX debugging"
+       depends on MAC80211_DEBUG
+
+config HOSTAPD_WPA_TESTING
+       bool "Support for TKIP countermeasures testing"
+       depends on MAC80211_DEBUG
+
+config MAC80211_IBSS_DEBUG
+       bool "Support for IBSS testing"
+       depends on MAC80211_DEBUG
+       ---help---
+         Say Y here if you intend to debug the IBSS code.
+
+config MAC80211_VERBOSE_PS_DEBUG
+       bool "Verbose powersave mode debugging"
+       depends on MAC80211_DEBUG
+       ---help---
+         Say Y here to print out verbose powersave
+         mode debug messages.
diff --git a/package/mac80211/src/mac80211/Makefile b/package/mac80211/src/mac80211/Makefile
new file mode 100644 (file)
index 0000000..40fe07c
--- /dev/null
@@ -0,0 +1,20 @@
+obj-$(CONFIG_MAC80211) += mac80211.o rc80211_simple.o rc80211_lowest.o
+
+mac80211-objs-$(CONFIG_MAC80211_LEDS) += ieee80211_led.o
+mac80211-objs-$(CONFIG_MAC80211_DEBUGFS) += debugfs.o debugfs_sta.o debugfs_netdev.o debugfs_key.o
+
+mac80211-objs := \
+       ieee80211.o \
+       ieee80211_ioctl.o \
+       sta_info.o \
+       wep.o \
+       wpa.o \
+       ieee80211_sta.o \
+       ieee80211_iface.o \
+       ieee80211_rate.o \
+       michael.o \
+       tkip.o \
+       aes_ccm.o \
+       wme.o \
+       ieee80211_cfg.o \
+       $(mac80211-objs-y)
diff --git a/package/mac80211/src/mac80211/aes_ccm.c b/package/mac80211/src/mac80211/aes_ccm.c
new file mode 100644 (file)
index 0000000..e55569b
--- /dev/null
@@ -0,0 +1,155 @@
+/*
+ * Copyright 2003-2004, Instant802 Networks, Inc.
+ * Copyright 2005-2006, Devicescape Software, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/types.h>
+#include <linux/crypto.h>
+#include <linux/err.h>
+#include <asm/scatterlist.h>
+
+#include <net/mac80211.h>
+#include "ieee80211_key.h"
+#include "aes_ccm.h"
+
+
+static void ieee80211_aes_encrypt(struct crypto_cipher *tfm,
+                                 const u8 pt[16], u8 ct[16])
+{
+       crypto_cipher_encrypt_one(tfm, ct, pt);
+}
+
+
+static inline void aes_ccm_prepare(struct crypto_cipher *tfm, u8 *b_0, u8 *aad,
+                                  u8 *b, u8 *s_0, u8 *a)
+{
+       int i;
+
+       ieee80211_aes_encrypt(tfm, b_0, b);
+
+       /* Extra Authenticate-only data (always two AES blocks) */
+       for (i = 0; i < AES_BLOCK_LEN; i++)
+               aad[i] ^= b[i];
+       ieee80211_aes_encrypt(tfm, aad, b);
+
+       aad += AES_BLOCK_LEN;
+
+       for (i = 0; i < AES_BLOCK_LEN; i++)
+               aad[i] ^= b[i];
+       ieee80211_aes_encrypt(tfm, aad, a);
+
+       /* Mask out bits from auth-only-b_0 */
+       b_0[0] &= 0x07;
+
+       /* S_0 is used to encrypt T (= MIC) */
+       b_0[14] = 0;
+       b_0[15] = 0;
+       ieee80211_aes_encrypt(tfm, b_0, s_0);
+}
+
+
+void ieee80211_aes_ccm_encrypt(struct crypto_cipher *tfm, u8 *scratch,
+                              u8 *b_0, u8 *aad, u8 *data, size_t data_len,
+                              u8 *cdata, u8 *mic)
+{
+       int i, j, last_len, num_blocks;
+       u8 *pos, *cpos, *b, *s_0, *e;
+
+       b = scratch;
+       s_0 = scratch + AES_BLOCK_LEN;
+       e = scratch + 2 * AES_BLOCK_LEN;
+
+       num_blocks = (data_len + AES_BLOCK_LEN - 1) / AES_BLOCK_LEN;
+       last_len = data_len % AES_BLOCK_LEN;
+       aes_ccm_prepare(tfm, b_0, aad, b, s_0, b);
+
+       /* Process payload blocks */
+       pos = data;
+       cpos = cdata;
+       for (j = 1; j <= num_blocks; j++) {
+               int blen = (j == num_blocks && last_len) ?
+                       last_len : AES_BLOCK_LEN;
+
+               /* Authentication followed by encryption */
+               for (i = 0; i < blen; i++)
+                       b[i] ^= pos[i];
+               ieee80211_aes_encrypt(tfm, b, b);
+
+               b_0[14] = (j >> 8) & 0xff;
+               b_0[15] = j & 0xff;
+               ieee80211_aes_encrypt(tfm, b_0, e);
+               for (i = 0; i < blen; i++)
+                       *cpos++ = *pos++ ^ e[i];
+       }
+
+       for (i = 0; i < CCMP_MIC_LEN; i++)
+               mic[i] = b[i] ^ s_0[i];
+}
+
+
+int ieee80211_aes_ccm_decrypt(struct crypto_cipher *tfm, u8 *scratch,
+                             u8 *b_0, u8 *aad, u8 *cdata, size_t data_len,
+                             u8 *mic, u8 *data)
+{
+       int i, j, last_len, num_blocks;
+       u8 *pos, *cpos, *b, *s_0, *a;
+
+       b = scratch;
+       s_0 = scratch + AES_BLOCK_LEN;
+       a = scratch + 2 * AES_BLOCK_LEN;
+
+       num_blocks = (data_len + AES_BLOCK_LEN - 1) / AES_BLOCK_LEN;
+       last_len = data_len % AES_BLOCK_LEN;
+       aes_ccm_prepare(tfm, b_0, aad, b, s_0, a);
+
+       /* Process payload blocks */
+       cpos = cdata;
+       pos = data;
+       for (j = 1; j <= num_blocks; j++) {
+               int blen = (j == num_blocks && last_len) ?
+                       last_len : AES_BLOCK_LEN;
+
+               /* Decryption followed by authentication */
+               b_0[14] = (j >> 8) & 0xff;
+               b_0[15] = j & 0xff;
+               ieee80211_aes_encrypt(tfm, b_0, b);
+               for (i = 0; i < blen; i++) {
+                       *pos = *cpos++ ^ b[i];
+                       a[i] ^= *pos++;
+               }
+
+               ieee80211_aes_encrypt(tfm, a, a);
+       }
+
+       for (i = 0; i < CCMP_MIC_LEN; i++) {
+               if ((mic[i] ^ s_0[i]) != a[i])
+                       return -1;
+       }
+
+       return 0;
+}
+
+
+struct crypto_cipher * ieee80211_aes_key_setup_encrypt(const u8 key[])
+{
+       struct crypto_cipher *tfm;
+
+       tfm = crypto_alloc_cipher("aes", 0, CRYPTO_ALG_ASYNC);
+       if (IS_ERR(tfm))
+               return NULL;
+
+       crypto_cipher_setkey(tfm, key, ALG_CCMP_KEY_LEN);
+
+       return tfm;
+}
+
+
+void ieee80211_aes_key_free(struct crypto_cipher *tfm)
+{
+       if (tfm)
+               crypto_free_cipher(tfm);
+}
diff --git a/package/mac80211/src/mac80211/aes_ccm.h b/package/mac80211/src/mac80211/aes_ccm.h
new file mode 100644 (file)
index 0000000..885f190
--- /dev/null
@@ -0,0 +1,26 @@
+/*
+ * Copyright 2003-2004, Instant802 Networks, Inc.
+ * Copyright 2006, Devicescape Software, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef AES_CCM_H
+#define AES_CCM_H
+
+#include <linux/crypto.h>
+
+#define AES_BLOCK_LEN 16
+
+struct crypto_cipher * ieee80211_aes_key_setup_encrypt(const u8 key[]);
+void ieee80211_aes_ccm_encrypt(struct crypto_cipher *tfm, u8 *scratch,
+                              u8 *b_0, u8 *aad, u8 *data, size_t data_len,
+                              u8 *cdata, u8 *mic);
+int ieee80211_aes_ccm_decrypt(struct crypto_cipher *tfm, u8 *scratch,
+                             u8 *b_0, u8 *aad, u8 *cdata, size_t data_len,
+                             u8 *mic, u8 *data);
+void ieee80211_aes_key_free(struct crypto_cipher *tfm);
+
+#endif /* AES_CCM_H */
diff --git a/package/mac80211/src/mac80211/debugfs.c b/package/mac80211/src/mac80211/debugfs.c
new file mode 100644 (file)
index 0000000..07e643a
--- /dev/null
@@ -0,0 +1,466 @@
+/*
+ * mac80211 debugfs for wireless PHYs
+ *
+ * Copyright 2007      Johannes Berg <johannes@sipsolutions.net>
+ *
+ * GPLv2
+ *
+ */
+
+#include <linux/debugfs.h>
+#include <linux/rtnetlink.h>
+#include "ieee80211_i.h"
+#include "ieee80211_rate.h"
+#include "debugfs.h"
+
+static inline int rtnl_lock_local(struct ieee80211_local *local)
+{
+       rtnl_lock();
+       if (unlikely(local->reg_state != IEEE80211_DEV_REGISTERED)) {
+               rtnl_unlock();
+               return -ENODEV;
+       }
+       return 0;
+}
+
+int mac80211_open_file_generic(struct inode *inode, struct file *file)
+{
+       file->private_data = inode->i_private;
+       return 0;
+}
+
+static const char *ieee80211_mode_str(int mode)
+{
+       switch (mode) {
+       case MODE_IEEE80211A:
+               return "IEEE 802.11a";
+       case MODE_IEEE80211B:
+               return "IEEE 802.11b";
+       case MODE_IEEE80211G:
+               return "IEEE 802.11g";
+       case MODE_ATHEROS_TURBO:
+               return "Atheros Turbo (5 GHz)";
+       default:
+               return "UNKNOWN";
+       }
+}
+
+static ssize_t modes_read(struct file *file, char __user *userbuf,
+                         size_t count, loff_t *ppos)
+{
+       struct ieee80211_local *local = file->private_data;
+       struct ieee80211_hw_mode *mode;
+       char buf[150], *p = buf;
+
+       /* FIXME: locking! */
+       list_for_each_entry(mode, &local->modes_list, list) {
+               p += scnprintf(p, sizeof(buf)+buf-p,
+                              "%s\n", ieee80211_mode_str(mode->mode));
+       }
+
+       return simple_read_from_buffer(userbuf, count, ppos, buf, p-buf);
+}
+
+static const struct file_operations modes_ops = {
+       .read = modes_read,
+       .open = mac80211_open_file_generic,
+};
+
+#define DEBUGFS_READ(name, buflen, fmt, value...)                      \
+static ssize_t name## _read(struct file *file, char __user *userbuf,   \
+                           size_t count, loff_t *ppos)                 \
+{                                                                      \
+       struct ieee80211_local *local = file->private_data;             \
+       char buf[buflen];                                               \
+       int res;                                                        \
+                                                                       \
+       res = scnprintf(buf, buflen, fmt "\n", ##value);                \
+       return simple_read_from_buffer(userbuf, count, ppos, buf, res); \
+}                                                                      \
+
+#define DEBUGFS_READONLY_FILE(name, buflen, fmt, value...)             \
+DEBUGFS_READ(name, buflen, fmt, ## value)                              \
+static const struct file_operations name## _ops = {                    \
+       .read = name## _read,                                           \
+       .open = mac80211_open_file_generic,                             \
+};
+
+#define DEBUGFS_ADD_MODE(name, mode)                                   \
+       local->debugfs.name = debugfs_create_file(#name, mode, phyd,    \
+                                                 local, &name## _ops);
+
+#define DEBUGFS_ADD(name)      DEBUGFS_ADD_MODE(name, 0444)
+
+#define DEBUGFS_DEL(name)                                              \
+       debugfs_remove(local->debugfs.name);                            \
+       local->debugfs.name = NULL;
+
+
+DEBUGFS_READONLY_FILE(channel, 20, "%d",
+                     local->hw.conf.channel);
+DEBUGFS_READONLY_FILE(frequency, 20, "%d",
+                     local->hw.conf.freq);
+DEBUGFS_READONLY_FILE(radar_detect, 20, "%d",
+                     local->hw.conf.radar_detect);
+DEBUGFS_READONLY_FILE(antenna_sel_tx, 20, "%d",
+                     local->hw.conf.antenna_sel_tx);
+DEBUGFS_READONLY_FILE(antenna_sel_rx, 20, "%d",
+                     local->hw.conf.antenna_sel_rx);
+DEBUGFS_READONLY_FILE(bridge_packets, 20, "%d",
+                     local->bridge_packets);
+DEBUGFS_READONLY_FILE(key_tx_rx_threshold, 20, "%d",
+                     local->key_tx_rx_threshold);
+DEBUGFS_READONLY_FILE(rts_threshold, 20, "%d",
+                     local->rts_threshold);
+DEBUGFS_READONLY_FILE(fragmentation_threshold, 20, "%d",
+                     local->fragmentation_threshold);
+DEBUGFS_READONLY_FILE(short_retry_limit, 20, "%d",
+                     local->short_retry_limit);
+DEBUGFS_READONLY_FILE(long_retry_limit, 20, "%d",
+                     local->long_retry_limit);
+DEBUGFS_READONLY_FILE(total_ps_buffered, 20, "%d",
+                     local->total_ps_buffered);
+DEBUGFS_READONLY_FILE(mode, 20, "%s",
+                     ieee80211_mode_str(local->hw.conf.phymode));
+DEBUGFS_READONLY_FILE(wep_iv, 20, "%#06x",
+                     local->wep_iv & 0xffffff);
+DEBUGFS_READONLY_FILE(tx_power_reduction, 20, "%d.%d dBm",
+                     local->hw.conf.tx_power_reduction / 10,
+                     local->hw.conf.tx_power_reduction & 10);
+
+DEBUGFS_READ(rate_ctrl_alg, 100, "%s",
+            local->rate_ctrl ? local->rate_ctrl->ops->name : "<unset>");
+
+static ssize_t rate_ctrl_alg_write(struct file *file, const char __user *userbuf,
+                                  size_t count, loff_t *ppos)
+{
+       struct ieee80211_local *local = file->private_data;
+       char buf[64];
+       ssize_t buf_size;
+       int res;
+
+       buf_size = min(count, ARRAY_SIZE(buf) - 1);
+       if (copy_from_user(buf, userbuf, buf_size))
+               return -EFAULT;
+       buf[buf_size] = '\0';
+       res = rtnl_lock_local(local);
+       if (res)
+               return res;
+       res = ieee80211_init_rate_ctrl_alg(local, buf);
+       rtnl_unlock();
+       return res < 0 ? res : buf_size;
+}
+
+static const struct file_operations rate_ctrl_alg_ops = {
+       .read = rate_ctrl_alg_read,
+       .write = rate_ctrl_alg_write,
+       .open = mac80211_open_file_generic,
+};
+
+/* statistics stuff */
+
+#define DEBUGFS_STATS_FILE(name, buflen, fmt, value...)                        \
+       DEBUGFS_READONLY_FILE(stats_ ##name, buflen, fmt, ##value)
+
+static ssize_t format_devstat_counter(struct ieee80211_local *local,
+       char __user *userbuf,
+       size_t count, loff_t *ppos,
+       int (*printvalue)(struct ieee80211_low_level_stats *stats, char *buf,
+                         int buflen))
+{
+       struct ieee80211_low_level_stats stats;
+       char buf[20];
+       int res;
+
+       if (!local->ops->get_stats)
+               return -EOPNOTSUPP;
+
+       res = rtnl_lock_local(local);
+       if (res)
+               return res;
+
+       res = local->ops->get_stats(local_to_hw(local), &stats);
+       rtnl_unlock();
+       if (!res)
+               res = printvalue(&stats, buf, sizeof(buf));
+       return simple_read_from_buffer(userbuf, count, ppos, buf, res);
+}
+
+#define DEBUGFS_DEVSTATS_FILE(name)                                    \
+static int print_devstats_##name(struct ieee80211_low_level_stats *stats,\
+                                char *buf, int buflen)                 \
+{                                                                      \
+       return scnprintf(buf, buflen, "%u\n", stats->name);             \
+}                                                                      \
+static ssize_t stats_ ##name## _read(struct file *file,                        \
+                                    char __user *userbuf,              \
+                                    size_t count, loff_t *ppos)        \
+{                                                                      \
+       return format_devstat_counter(file->private_data,               \
+                                     userbuf,                          \
+                                     count,                            \
+                                     ppos,                             \
+                                     print_devstats_##name);           \
+}                                                                      \
+                                                                       \
+static const struct file_operations stats_ ##name## _ops = {           \
+       .read = stats_ ##name## _read,                                  \
+       .open = mac80211_open_file_generic,                             \
+};
+
+#define DEBUGFS_STATS_ADD(name)                                                \
+       local->debugfs.stats.name = debugfs_create_file(#name, 0444, statsd,\
+               local, &stats_ ##name## _ops);
+
+#define DEBUGFS_STATS_DEL(name)                                                \
+       debugfs_remove(local->debugfs.stats.name);                      \
+       local->debugfs.stats.name = NULL;
+
+DEBUGFS_STATS_FILE(transmitted_fragment_count, 20, "%u",
+                  local->dot11TransmittedFragmentCount);
+DEBUGFS_STATS_FILE(multicast_transmitted_frame_count, 20, "%u",
+                  local->dot11MulticastTransmittedFrameCount);
+DEBUGFS_STATS_FILE(failed_count, 20, "%u",
+                  local->dot11FailedCount);
+DEBUGFS_STATS_FILE(retry_count, 20, "%u",
+                  local->dot11RetryCount);
+DEBUGFS_STATS_FILE(multiple_retry_count, 20, "%u",
+                  local->dot11MultipleRetryCount);
+DEBUGFS_STATS_FILE(frame_duplicate_count, 20, "%u",
+                  local->dot11FrameDuplicateCount);
+DEBUGFS_STATS_FILE(received_fragment_count, 20, "%u",
+                  local->dot11ReceivedFragmentCount);
+DEBUGFS_STATS_FILE(multicast_received_frame_count, 20, "%u",
+                  local->dot11MulticastReceivedFrameCount);
+DEBUGFS_STATS_FILE(transmitted_frame_count, 20, "%u",
+                  local->dot11TransmittedFrameCount);
+DEBUGFS_STATS_FILE(wep_undecryptable_count, 20, "%u",
+                  local->dot11WEPUndecryptableCount);
+#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
+DEBUGFS_STATS_FILE(tx_handlers_drop, 20, "%u",
+                  local->tx_handlers_drop);
+DEBUGFS_STATS_FILE(tx_handlers_queued, 20, "%u",
+                  local->tx_handlers_queued);
+DEBUGFS_STATS_FILE(tx_handlers_drop_unencrypted, 20, "%u",
+                  local->tx_handlers_drop_unencrypted);
+DEBUGFS_STATS_FILE(tx_handlers_drop_fragment, 20, "%u",
+                  local->tx_handlers_drop_fragment);
+DEBUGFS_STATS_FILE(tx_handlers_drop_wep, 20, "%u",
+                  local->tx_handlers_drop_wep);
+DEBUGFS_STATS_FILE(tx_handlers_drop_not_assoc, 20, "%u",
+                  local->tx_handlers_drop_not_assoc);
+DEBUGFS_STATS_FILE(tx_handlers_drop_unauth_port, 20, "%u",
+                  local->tx_handlers_drop_unauth_port);
+DEBUGFS_STATS_FILE(rx_handlers_drop, 20, "%u",
+                  local->rx_handlers_drop);
+DEBUGFS_STATS_FILE(rx_handlers_queued, 20, "%u",
+                  local->rx_handlers_queued);
+DEBUGFS_STATS_FILE(rx_handlers_drop_nullfunc, 20, "%u",
+                  local->rx_handlers_drop_nullfunc);
+DEBUGFS_STATS_FILE(rx_handlers_drop_defrag, 20, "%u",
+                  local->rx_handlers_drop_defrag);
+DEBUGFS_STATS_FILE(rx_handlers_drop_short, 20, "%u",
+                  local->rx_handlers_drop_short);
+DEBUGFS_STATS_FILE(rx_handlers_drop_passive_scan, 20, "%u",
+                  local->rx_handlers_drop_passive_scan);
+DEBUGFS_STATS_FILE(tx_expand_skb_head, 20, "%u",
+                  local->tx_expand_skb_head);
+DEBUGFS_STATS_FILE(tx_expand_skb_head_cloned, 20, "%u",
+                  local->tx_expand_skb_head_cloned);
+DEBUGFS_STATS_FILE(rx_expand_skb_head, 20, "%u",
+                  local->rx_expand_skb_head);
+DEBUGFS_STATS_FILE(rx_expand_skb_head2, 20, "%u",
+                  local->rx_expand_skb_head2);
+DEBUGFS_STATS_FILE(rx_handlers_fragments, 20, "%u",
+                  local->rx_handlers_fragments);
+DEBUGFS_STATS_FILE(tx_status_drop, 20, "%u",
+                  local->tx_status_drop);
+
+static ssize_t stats_wme_rx_queue_read(struct file *file,
+                                      char __user *userbuf,
+                                      size_t count, loff_t *ppos)
+{
+       struct ieee80211_local *local = file->private_data;
+       char buf[NUM_RX_DATA_QUEUES*15], *p = buf;
+       int i;
+
+       for (i = 0; i < NUM_RX_DATA_QUEUES; i++)
+               p += scnprintf(p, sizeof(buf)+buf-p,
+                              "%u\n", local->wme_rx_queue[i]);
+
+       return simple_read_from_buffer(userbuf, count, ppos, buf, p-buf);
+}
+
+static const struct file_operations stats_wme_rx_queue_ops = {
+       .read = stats_wme_rx_queue_read,
+       .open = mac80211_open_file_generic,
+};
+
+static ssize_t stats_wme_tx_queue_read(struct file *file,
+                                      char __user *userbuf,
+                                      size_t count, loff_t *ppos)
+{
+       struct ieee80211_local *local = file->private_data;
+       char buf[NUM_TX_DATA_QUEUES*15], *p = buf;
+       int i;
+
+       for (i = 0; i < NUM_TX_DATA_QUEUES; i++)
+               p += scnprintf(p, sizeof(buf)+buf-p,
+                              "%u\n", local->wme_tx_queue[i]);
+
+       return simple_read_from_buffer(userbuf, count, ppos, buf, p-buf);
+}
+
+static const struct file_operations stats_wme_tx_queue_ops = {
+       .read = stats_wme_tx_queue_read,
+       .open = mac80211_open_file_generic,
+};
+#endif
+
+DEBUGFS_DEVSTATS_FILE(dot11ACKFailureCount);
+DEBUGFS_DEVSTATS_FILE(dot11RTSFailureCount);
+DEBUGFS_DEVSTATS_FILE(dot11FCSErrorCount);
+DEBUGFS_DEVSTATS_FILE(dot11RTSSuccessCount);
+
+
+void debugfs_hw_add(struct ieee80211_local *local)
+{
+       struct dentry *phyd = local->hw.wiphy->debugfsdir;
+       struct dentry *statsd;
+
+       if (!phyd)
+               return;
+
+       local->debugfs.stations = debugfs_create_dir("stations", phyd);
+       local->debugfs.keys = debugfs_create_dir("keys", phyd);
+
+       DEBUGFS_ADD(channel);
+       DEBUGFS_ADD(frequency);
+       DEBUGFS_ADD(radar_detect);
+       DEBUGFS_ADD(antenna_sel_tx);
+       DEBUGFS_ADD(antenna_sel_rx);
+       DEBUGFS_ADD(bridge_packets);
+       DEBUGFS_ADD(key_tx_rx_threshold);
+       DEBUGFS_ADD(rts_threshold);
+       DEBUGFS_ADD(fragmentation_threshold);
+       DEBUGFS_ADD(short_retry_limit);
+       DEBUGFS_ADD(long_retry_limit);
+       DEBUGFS_ADD(total_ps_buffered);
+       DEBUGFS_ADD(mode);
+       DEBUGFS_ADD(wep_iv);
+       DEBUGFS_ADD(tx_power_reduction);
+       DEBUGFS_ADD_MODE(rate_ctrl_alg, 0644);
+       DEBUGFS_ADD(modes);
+
+       statsd = debugfs_create_dir("statistics", phyd);
+       local->debugfs.statistics = statsd;
+
+       /* if the dir failed, don't put all the other things into the root! */
+       if (!statsd)
+               return;
+
+       DEBUGFS_STATS_ADD(transmitted_fragment_count);
+       DEBUGFS_STATS_ADD(multicast_transmitted_frame_count);
+       DEBUGFS_STATS_ADD(failed_count);
+       DEBUGFS_STATS_ADD(retry_count);
+       DEBUGFS_STATS_ADD(multiple_retry_count);
+       DEBUGFS_STATS_ADD(frame_duplicate_count);
+       DEBUGFS_STATS_ADD(received_fragment_count);
+       DEBUGFS_STATS_ADD(multicast_received_frame_count);
+       DEBUGFS_STATS_ADD(transmitted_frame_count);
+       DEBUGFS_STATS_ADD(wep_undecryptable_count);
+#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
+       DEBUGFS_STATS_ADD(tx_handlers_drop);
+       DEBUGFS_STATS_ADD(tx_handlers_queued);
+       DEBUGFS_STATS_ADD(tx_handlers_drop_unencrypted);
+       DEBUGFS_STATS_ADD(tx_handlers_drop_fragment);
+       DEBUGFS_STATS_ADD(tx_handlers_drop_wep);
+       DEBUGFS_STATS_ADD(tx_handlers_drop_not_assoc);
+       DEBUGFS_STATS_ADD(tx_handlers_drop_unauth_port);
+       DEBUGFS_STATS_ADD(rx_handlers_drop);
+       DEBUGFS_STATS_ADD(rx_handlers_queued);
+       DEBUGFS_STATS_ADD(rx_handlers_drop_nullfunc);
+       DEBUGFS_STATS_ADD(rx_handlers_drop_defrag);
+       DEBUGFS_STATS_ADD(rx_handlers_drop_short);
+       DEBUGFS_STATS_ADD(rx_handlers_drop_passive_scan);
+       DEBUGFS_STATS_ADD(tx_expand_skb_head);
+       DEBUGFS_STATS_ADD(tx_expand_skb_head_cloned);
+       DEBUGFS_STATS_ADD(rx_expand_skb_head);
+       DEBUGFS_STATS_ADD(rx_expand_skb_head2);
+       DEBUGFS_STATS_ADD(rx_handlers_fragments);
+       DEBUGFS_STATS_ADD(tx_status_drop);
+       DEBUGFS_STATS_ADD(wme_tx_queue);
+       DEBUGFS_STATS_ADD(wme_rx_queue);
+#endif
+       DEBUGFS_STATS_ADD(dot11ACKFailureCount);
+       DEBUGFS_STATS_ADD(dot11RTSFailureCount);
+       DEBUGFS_STATS_ADD(dot11FCSErrorCount);
+       DEBUGFS_STATS_ADD(dot11RTSSuccessCount);
+}
+
+void debugfs_hw_del(struct ieee80211_local *local)
+{
+       DEBUGFS_DEL(channel);
+       DEBUGFS_DEL(frequency);
+       DEBUGFS_DEL(radar_detect);
+       DEBUGFS_DEL(antenna_sel_tx);
+       DEBUGFS_DEL(antenna_sel_rx);
+       DEBUGFS_DEL(bridge_packets);
+       DEBUGFS_DEL(key_tx_rx_threshold);
+       DEBUGFS_DEL(rts_threshold);
+       DEBUGFS_DEL(fragmentation_threshold);
+       DEBUGFS_DEL(short_retry_limit);
+       DEBUGFS_DEL(long_retry_limit);
+       DEBUGFS_DEL(total_ps_buffered);
+       DEBUGFS_DEL(mode);
+       DEBUGFS_DEL(wep_iv);
+       DEBUGFS_DEL(tx_power_reduction);
+       DEBUGFS_DEL(rate_ctrl_alg);
+       DEBUGFS_DEL(modes);
+
+       DEBUGFS_STATS_DEL(transmitted_fragment_count);
+       DEBUGFS_STATS_DEL(multicast_transmitted_frame_count);
+       DEBUGFS_STATS_DEL(failed_count);
+       DEBUGFS_STATS_DEL(retry_count);
+       DEBUGFS_STATS_DEL(multiple_retry_count);
+       DEBUGFS_STATS_DEL(frame_duplicate_count);
+       DEBUGFS_STATS_DEL(received_fragment_count);
+       DEBUGFS_STATS_DEL(multicast_received_frame_count);
+       DEBUGFS_STATS_DEL(transmitted_frame_count);
+       DEBUGFS_STATS_DEL(wep_undecryptable_count);
+       DEBUGFS_STATS_DEL(num_scans);
+#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
+       DEBUGFS_STATS_DEL(tx_handlers_drop);
+       DEBUGFS_STATS_DEL(tx_handlers_queued);
+       DEBUGFS_STATS_DEL(tx_handlers_drop_unencrypted);
+       DEBUGFS_STATS_DEL(tx_handlers_drop_fragment);
+       DEBUGFS_STATS_DEL(tx_handlers_drop_wep);
+       DEBUGFS_STATS_DEL(tx_handlers_drop_not_assoc);
+       DEBUGFS_STATS_DEL(tx_handlers_drop_unauth_port);
+       DEBUGFS_STATS_DEL(rx_handlers_drop);
+       DEBUGFS_STATS_DEL(rx_handlers_queued);
+       DEBUGFS_STATS_DEL(rx_handlers_drop_nullfunc);
+       DEBUGFS_STATS_DEL(rx_handlers_drop_defrag);
+       DEBUGFS_STATS_DEL(rx_handlers_drop_short);
+       DEBUGFS_STATS_DEL(rx_handlers_drop_passive_scan);
+       DEBUGFS_STATS_DEL(tx_expand_skb_head);
+       DEBUGFS_STATS_DEL(tx_expand_skb_head_cloned);
+       DEBUGFS_STATS_DEL(rx_expand_skb_head);
+       DEBUGFS_STATS_DEL(rx_expand_skb_head2);
+       DEBUGFS_STATS_DEL(rx_handlers_fragments);
+       DEBUGFS_STATS_DEL(tx_status_drop);
+       DEBUGFS_STATS_DEL(wme_tx_queue);
+       DEBUGFS_STATS_DEL(wme_rx_queue);
+#endif
+       DEBUGFS_STATS_DEL(dot11ACKFailureCount);
+       DEBUGFS_STATS_DEL(dot11RTSFailureCount);
+       DEBUGFS_STATS_DEL(dot11FCSErrorCount);
+       DEBUGFS_STATS_DEL(dot11RTSSuccessCount);
+
+       debugfs_remove(local->debugfs.statistics);
+       local->debugfs.statistics = NULL;
+       debugfs_remove(local->debugfs.stations);
+       local->debugfs.stations = NULL;
+       debugfs_remove(local->debugfs.keys);
+       local->debugfs.keys = NULL;
+}
diff --git a/package/mac80211/src/mac80211/debugfs.h b/package/mac80211/src/mac80211/debugfs.h
new file mode 100644 (file)
index 0000000..dd25419
--- /dev/null
@@ -0,0 +1,16 @@
+#ifndef __MAC80211_DEBUGFS_H
+#define __MAC80211_DEBUGFS_H
+
+#ifdef CONFIG_MAC80211_DEBUGFS
+extern void debugfs_hw_add(struct ieee80211_local *local);
+extern void debugfs_hw_del(struct ieee80211_local *local);
+extern int mac80211_open_file_generic(struct inode *inode, struct file *file);
+#else
+static inline void debugfs_hw_add(struct ieee80211_local *local)
+{
+       return;
+}
+static inline void debugfs_hw_del(struct ieee80211_local *local) {}
+#endif
+
+#endif /* __MAC80211_DEBUGFS_H */
diff --git a/package/mac80211/src/mac80211/debugfs_key.c b/package/mac80211/src/mac80211/debugfs_key.c
new file mode 100644 (file)
index 0000000..7d56dc9
--- /dev/null
@@ -0,0 +1,252 @@
+/*
+ * Copyright 2003-2005 Devicescape Software, Inc.
+ * Copyright (c) 2006  Jiri Benc <jbenc@suse.cz>
+ * Copyright 2007      Johannes Berg <johannes@sipsolutions.net>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/kobject.h>
+#include "ieee80211_i.h"
+#include "ieee80211_key.h"
+#include "debugfs.h"
+#include "debugfs_key.h"
+
+#define KEY_READ(name, buflen, format_string)                          \
+static ssize_t key_##name##_read(struct file *file,                    \
+                                char __user *userbuf,                  \
+                                size_t count, loff_t *ppos)            \
+{                                                                      \
+       char buf[buflen];                                               \
+       struct ieee80211_key *key = file->private_data;                 \
+       int res = scnprintf(buf, buflen, format_string, key->name);     \
+       return simple_read_from_buffer(userbuf, count, ppos, buf, res); \
+}
+#define KEY_READ_D(name) KEY_READ(name, 20, "%d\n")
+
+#define KEY_OPS(name)                                                  \
+static const struct file_operations key_ ##name## _ops = {             \
+       .read = key_##name##_read,                                      \
+       .open = mac80211_open_file_generic,                             \
+}
+
+#define KEY_FILE(name, format)                                         \
+                KEY_READ_##format(name)                                \
+                KEY_OPS(name)
+
+KEY_FILE(keylen, D);
+KEY_FILE(force_sw_encrypt, D);
+KEY_FILE(keyidx, D);
+KEY_FILE(hw_key_idx, D);
+KEY_FILE(tx_rx_count, D);
+
+static ssize_t key_algorithm_read(struct file *file,
+                                 char __user *userbuf,
+                                 size_t count, loff_t *ppos)
+{
+       char *alg;
+       struct ieee80211_key *key = file->private_data;
+
+       switch (key->alg) {
+       case ALG_WEP:
+               alg = "WEP\n";
+               break;
+       case ALG_TKIP:
+               alg = "TKIP\n";
+               break;
+       case ALG_CCMP:
+               alg = "CCMP\n";
+               break;
+       default:
+               return 0;
+       }
+       return simple_read_from_buffer(userbuf, count, ppos, alg, strlen(alg));
+}
+KEY_OPS(algorithm);
+
+static ssize_t key_tx_spec_read(struct file *file, char __user *userbuf,
+                               size_t count, loff_t *ppos)
+{
+       const u8 *tpn;
+       char buf[20];
+       int len;
+       struct ieee80211_key *key = file->private_data;
+
+       switch (key->alg) {
+       case ALG_WEP:
+               len = scnprintf(buf, sizeof(buf), "\n");
+       case ALG_TKIP:
+               len = scnprintf(buf, sizeof(buf), "%08x %04x\n",
+                               key->u.tkip.iv32,
+                               key->u.tkip.iv16);
+       case ALG_CCMP:
+               tpn = key->u.ccmp.tx_pn;
+               len = scnprintf(buf, sizeof(buf), "%02x%02x%02x%02x%02x%02x\n",
+                               tpn[0], tpn[1], tpn[2], tpn[3], tpn[4], tpn[5]);
+       default:
+               return 0;
+       }
+       return simple_read_from_buffer(userbuf, count, ppos, buf, len);
+}
+KEY_OPS(tx_spec);
+
+static ssize_t key_rx_spec_read(struct file *file, char __user *userbuf,
+                               size_t count, loff_t *ppos)
+{
+       struct ieee80211_key *key = file->private_data;
+       char buf[14*NUM_RX_DATA_QUEUES+1], *p = buf;
+       int i, len;
+       const u8 *rpn;
+
+       switch (key->alg) {
+       case ALG_WEP:
+               len = scnprintf(buf, sizeof(buf), "\n");
+       case ALG_TKIP:
+               for (i = 0; i < NUM_RX_DATA_QUEUES; i++)
+                       p += scnprintf(p, sizeof(buf)+buf-p,
+                                      "%08x %04x\n",
+                                      key->u.tkip.iv32_rx[i],
+                                      key->u.tkip.iv16_rx[i]);
+               len = p - buf;
+       case ALG_CCMP:
+               for (i = 0; i < NUM_RX_DATA_QUEUES; i++) {
+                       rpn = key->u.ccmp.rx_pn[i];
+                       p += scnprintf(p, sizeof(buf)+buf-p,
+                                      "%02x%02x%02x%02x%02x%02x\n",
+                                      rpn[0], rpn[1], rpn[2],
+                                      rpn[3], rpn[4], rpn[5]);
+               }
+               len = p - buf;
+       default:
+               return 0;
+       }
+       return simple_read_from_buffer(userbuf, count, ppos, buf, len);
+}
+KEY_OPS(rx_spec);
+
+static ssize_t key_replays_read(struct file *file, char __user *userbuf,
+                               size_t count, loff_t *ppos)
+{
+       struct ieee80211_key *key = file->private_data;
+       char buf[20];
+       int len;
+
+       if (key->alg != ALG_CCMP)
+               return 0;
+       len = scnprintf(buf, sizeof(buf), "%u\n", key->u.ccmp.replays);
+       return simple_read_from_buffer(userbuf, count, ppos, buf, len);
+}
+KEY_OPS(replays);
+
+static ssize_t key_key_read(struct file *file, char __user *userbuf,
+                           size_t count, loff_t *ppos)
+{
+       struct ieee80211_key *key = file->private_data;
+       int i, res, bufsize = 2*key->keylen+2;
+       char *buf = kmalloc(bufsize, GFP_KERNEL);
+       char *p = buf;
+
+       for (i = 0; i < key->keylen; i++)
+               p += scnprintf(p, bufsize+buf-p, "%02x", key->key[i]);
+       p += scnprintf(p, bufsize+buf-p, "\n");
+       res = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
+       kfree(buf);
+       return res;
+}
+KEY_OPS(key);
+
+#define DEBUGFS_ADD(name) \
+       key->debugfs.name = debugfs_create_file(#name, 0400,\
+                               key->debugfs.dir, key, &key_##name##_ops);
+
+void ieee80211_debugfs_key_add(struct ieee80211_local *local,
+                              struct ieee80211_key *key)
+{
+       char buf[20];
+
+       if (!local->debugfs.keys)
+               return;
+
+       sprintf(buf, "%d", key->keyidx);
+       key->debugfs.dir = debugfs_create_dir(buf,
+                                       local->debugfs.keys);
+
+       if (!key->debugfs.dir)
+               return;
+
+       DEBUGFS_ADD(keylen);
+       DEBUGFS_ADD(force_sw_encrypt);
+       DEBUGFS_ADD(keyidx);
+       DEBUGFS_ADD(hw_key_idx);
+       DEBUGFS_ADD(tx_rx_count);
+       DEBUGFS_ADD(algorithm);
+       DEBUGFS_ADD(tx_spec);
+       DEBUGFS_ADD(rx_spec);
+       DEBUGFS_ADD(replays);
+       DEBUGFS_ADD(key);
+};
+
+#define DEBUGFS_DEL(name) \
+       debugfs_remove(key->debugfs.name); key->debugfs.name = NULL;
+
+void ieee80211_debugfs_key_remove(struct ieee80211_key *key)
+{
+       if (!key)
+               return;
+
+       DEBUGFS_DEL(keylen);
+       DEBUGFS_DEL(force_sw_encrypt);
+       DEBUGFS_DEL(keyidx);
+       DEBUGFS_DEL(hw_key_idx);
+       DEBUGFS_DEL(tx_rx_count);
+       DEBUGFS_DEL(algorithm);
+       DEBUGFS_DEL(tx_spec);
+       DEBUGFS_DEL(rx_spec);
+       DEBUGFS_DEL(replays);
+       DEBUGFS_DEL(key);
+
+       debugfs_remove(key->debugfs.stalink);
+       key->debugfs.stalink = NULL;
+       debugfs_remove(key->debugfs.dir);
+       key->debugfs.dir = NULL;
+}
+void ieee80211_debugfs_key_add_default(struct ieee80211_sub_if_data *sdata)
+{
+       char buf[50];
+
+       if (!sdata->debugfsdir)
+               return;
+
+       sprintf(buf, "../keys/%d", sdata->default_key->keyidx);
+       sdata->debugfs.default_key =
+               debugfs_create_symlink("default_key", sdata->debugfsdir, buf);
+}
+void ieee80211_debugfs_key_remove_default(struct ieee80211_sub_if_data *sdata)
+{
+       if (!sdata)
+               return;
+
+       debugfs_remove(sdata->debugfs.default_key);
+       sdata->debugfs.default_key = NULL;
+}
+void ieee80211_debugfs_key_sta_link(struct ieee80211_key *key,
+                                   struct sta_info *sta)
+{
+       char buf[50];
+
+       if (!key->debugfs.dir)
+               return;
+
+       sprintf(buf, "../sta/" MAC_FMT, MAC_ARG(sta->addr));
+       key->debugfs.stalink =
+               debugfs_create_symlink("station", key->debugfs.dir, buf);
+}
+
+void ieee80211_debugfs_key_sta_del(struct ieee80211_key *key,
+                                  struct sta_info *sta)
+{
+       debugfs_remove(key->debugfs.stalink);
+       key->debugfs.stalink = NULL;
+}
diff --git a/package/mac80211/src/mac80211/debugfs_key.h b/package/mac80211/src/mac80211/debugfs_key.h
new file mode 100644 (file)
index 0000000..aecfce3
--- /dev/null
@@ -0,0 +1,34 @@
+#ifndef __MAC80211_DEBUGFS_KEY_H
+#define __MAC80211_DEBUGFS_KEY_H
+
+#ifdef CONFIG_MAC80211_DEBUGFS
+void ieee80211_debugfs_key_add(struct ieee80211_local *local,
+                              struct ieee80211_key *key);
+void ieee80211_debugfs_key_remove(struct ieee80211_key *key);
+void ieee80211_debugfs_key_add_default(struct ieee80211_sub_if_data *sdata);
+void ieee80211_debugfs_key_remove_default(struct ieee80211_sub_if_data *sdata);
+void ieee80211_debugfs_key_sta_link(struct ieee80211_key *key,
+                                   struct sta_info *sta);
+void ieee80211_debugfs_key_sta_del(struct ieee80211_key *key,
+                                  struct sta_info *sta);
+#else
+static inline void ieee80211_debugfs_key_add(struct ieee80211_local *local,
+                                            struct ieee80211_key *key)
+{}
+static inline void ieee80211_debugfs_key_remove(struct ieee80211_key *key)
+{}
+static inline void ieee80211_debugfs_key_add_default(
+       struct ieee80211_sub_if_data *sdata)
+{}
+static inline void ieee80211_debugfs_key_remove_default(
+       struct ieee80211_sub_if_data *sdata)
+{}
+static inline void ieee80211_debugfs_key_sta_link(
+       struct ieee80211_key *key, struct sta_info *sta)
+{}
+static inline void ieee80211_debugfs_key_sta_del(struct ieee80211_key *key,
+                                                struct sta_info *sta)
+{}
+#endif
+
+#endif /* __MAC80211_DEBUGFS_KEY_H */
diff --git a/package/mac80211/src/mac80211/debugfs_netdev.c b/package/mac80211/src/mac80211/debugfs_netdev.c
new file mode 100644 (file)
index 0000000..b9409ee
--- /dev/null
@@ -0,0 +1,780 @@
+/*
+ * Copyright (c) 2006  Jiri Benc <jbenc@suse.cz>
+ * Copyright 2007      Johannes Berg <johannes@sipsolutions.net>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include <linux/if.h>
+#include <linux/interrupt.h>
+#include <linux/netdevice.h>
+#include <linux/rtnetlink.h>
+#include <linux/notifier.h>
+#include <net/mac80211.h>
+#include <net/cfg80211.h>
+#include "ieee80211_i.h"
+#include "ieee80211_rate.h"
+#include "debugfs.h"
+#include "debugfs_netdev.h"
+
+static ssize_t ieee80211_if_read(
+       struct ieee80211_sub_if_data *sdata,
+       char __user *userbuf,
+       size_t count, loff_t *ppos,
+       ssize_t (*format)(const struct ieee80211_sub_if_data *, char *, int))
+{
+       char buf[70];
+       ssize_t ret = -EINVAL;
+
+       read_lock(&dev_base_lock);
+       if (sdata->dev->reg_state == NETREG_REGISTERED) {
+               ret = (*format)(sdata, buf, sizeof(buf));
+               ret = simple_read_from_buffer(userbuf, count, ppos, buf, ret);
+       }
+       read_unlock(&dev_base_lock);
+       return ret;
+}
+
+#define IEEE80211_IF_FMT(name, field, format_string)                   \
+static ssize_t ieee80211_if_fmt_##name(                                        \
+       const struct ieee80211_sub_if_data *sdata, char *buf,           \
+       int buflen)                                                     \
+{                                                                      \
+       return scnprintf(buf, buflen, format_string, sdata->field);     \
+}
+#define IEEE80211_IF_FMT_DEC(name, field)                              \
+               IEEE80211_IF_FMT(name, field, "%d\n")
+#define IEEE80211_IF_FMT_HEX(name, field)                              \
+               IEEE80211_IF_FMT(name, field, "%#x\n")
+#define IEEE80211_IF_FMT_SIZE(name, field)                             \
+               IEEE80211_IF_FMT(name, field, "%zd\n")
+
+#define IEEE80211_IF_FMT_ATOMIC(name, field)                           \
+static ssize_t ieee80211_if_fmt_##name(                                        \
+       const struct ieee80211_sub_if_data *sdata,                      \
+       char *buf, int buflen)                                          \
+{                                                                      \
+       return scnprintf(buf, buflen, "%d\n", atomic_read(&sdata->field));\
+}
+
+#define IEEE80211_IF_FMT_MAC(name, field)                              \
+static ssize_t ieee80211_if_fmt_##name(                                        \
+       const struct ieee80211_sub_if_data *sdata, char *buf,           \
+       int buflen)                                                     \
+{                                                                      \
+       return scnprintf(buf, buflen, MAC_FMT "\n", MAC_ARG(sdata->field));\
+}
+
+#define __IEEE80211_IF_FILE(name)                                      \
+static ssize_t ieee80211_if_read_##name(struct file *file,             \
+                                       char __user *userbuf,           \
+                                       size_t count, loff_t *ppos)     \
+{                                                                      \
+       return ieee80211_if_read(file->private_data,                    \
+                                userbuf, count, ppos,                  \
+                                ieee80211_if_fmt_##name);              \
+}                                                                      \
+static const struct file_operations name##_ops = {                     \
+       .read = ieee80211_if_read_##name,                               \
+       .open = mac80211_open_file_generic,                             \
+}
+
+#define IEEE80211_IF_FILE(name, field, format)                         \
+               IEEE80211_IF_FMT_##format(name, field)                  \
+               __IEEE80211_IF_FILE(name)
+
+static struct ieee80211_elem_tspec _tspec = {
+       .nominal_msdu_size = 200,
+       .inactivity_interval = 40,
+       .mean_data_rate = 40000,
+       .min_phy_rate = 6000000,
+       .surplus_band_allow = 8192,
+       .medium_time = 30,
+};
+static u8 _dls_mac[ETH_ALEN];
+
+#define DEBUGFS_QOS_FILE(name, f)                                      \
+static ssize_t qos_ ##name## _write(struct file *file,                 \
+                                   const char __user *userbuf,         \
+                                   size_t count, loff_t *ppos)         \
+{                                                                      \
+       struct ieee80211_sub_if_data *sdata = file->private_data;       \
+                                                                       \
+       f(sdata->dev, &sdata->u.sta, &_tspec);                          \
+                                                                       \
+       return count;                                                   \
+}                                                                      \
+                                                                       \
+static const struct file_operations qos_ ##name## _ops = {             \
+       .write = qos_ ##name## _write,                                  \
+       .open = mac80211_open_file_generic,                             \
+};
+
+#define DEBUGFS_QOS_ADD(name)                                          \
+       sdata->debugfs.sta.qos.name = debugfs_create_file(#name, 0444, qosd,\
+               sdata, &qos_ ##name## _ops);
+
+#define DEBUGFS_QOS_DEL(name)                                          \
+       do {                                                            \
+               debugfs_remove(sdata->debugfs.sta.qos.name);            \
+               sdata->debugfs.sta.qos.name = NULL;                     \
+       } while (0)
+
+DEBUGFS_QOS_FILE(addts_11e, ieee80211_send_addts);
+DEBUGFS_QOS_FILE(addts_wmm, wmm_send_addts);
+DEBUGFS_QOS_FILE(delts_11e, ieee80211_send_delts);
+DEBUGFS_QOS_FILE(delts_wmm, wmm_send_delts);
+
+static ssize_t qos_if_dls_mac(const struct ieee80211_sub_if_data *sdata,
+                             char *buf, int buflen)
+{
+       return scnprintf(buf, buflen, MAC_FMT "\n", MAC_ARG(_dls_mac));
+}
+
+static ssize_t qos_dls_mac_read(struct file *file,
+                               char __user *userbuf,
+                               size_t count, loff_t *ppos)
+{
+       return ieee80211_if_read(file->private_data,
+                                userbuf, count, ppos,
+                                qos_if_dls_mac);
+}
+
+static ssize_t qos_dls_mac_write(struct file *file, const char __user *userbuf,
+                                size_t count, loff_t *ppos)
+{
+       struct ieee80211_sub_if_data *sdata = file->private_data;
+       char buf[20];
+       size_t size;
+       u8 m[ETH_ALEN];
+
+       size = min(sizeof(buf) - 1, count);
+       buf[size] = '\0';
+       if (copy_from_user(buf, userbuf, size))
+               return -EFAULT;
+
+       if (sscanf(buf, "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx",
+                  &((u8*)(m))[0], &((u8*)(m))[1], &((u8*)(m))[2],
+                  &((u8*)(m))[3], &((u8*)(m))[4], &((u8*)(m))[5]) != ETH_ALEN){
+               printk(KERN_ERR "%s: sscanf input error\n", sdata->dev->name);
+               return -EINVAL;
+       }
+       memcpy(_dls_mac, m, ETH_ALEN);
+       return count;
+}
+
+static const struct file_operations qos_dls_mac_ops = {
+       .read = qos_dls_mac_read,
+       .write = qos_dls_mac_write,
+       .open = mac80211_open_file_generic,
+};
+
+static ssize_t qos_if_dls_op(const struct ieee80211_sub_if_data *sdata,
+                            char *buf, int buflen)
+{
+       return scnprintf(buf, buflen,
+                        "DLS Operation: Setup = 1; Teardown = 2\n");
+}
+
+static ssize_t qos_dls_op_read(struct file *file, char __user *userbuf,
+                              size_t count, loff_t *ppos)
+{
+       return ieee80211_if_read(file->private_data,
+                                userbuf, count, ppos,
+                                qos_if_dls_op);
+}
+
+static ssize_t qos_dls_op_write(struct file *file, const char __user *userbuf,
+                                size_t count, loff_t *ppos)
+{
+       struct ieee80211_sub_if_data *sdata = file->private_data;
+       char buf[20];
+       size_t size;
+       unsigned int opt;
+
+       size = min(sizeof(buf) - 1, count);
+       buf[size] = '\0';
+       if (copy_from_user(buf, userbuf, size))
+               return -EFAULT;
+
+       if (sscanf(buf, "%u", &opt) != 1) {
+               printk(KERN_ERR "%s: sscanf input error\n", sdata->dev->name);
+               return -EINVAL;
+       }
+       switch (opt) {
+       case 1:
+               ieee80211_send_dls_req(sdata->dev, &sdata->u.sta, _dls_mac, 0);
+               break;
+       case 2:
+               ieee80211_send_dls_teardown(sdata->dev, &sdata->u.sta, _dls_mac,
+                                           WLAN_REASON_QSTA_NOT_USE);
+               break;
+       default:
+               printk(KERN_ERR "Unknown DLS Operation: %d\n", opt);
+               break;
+       }
+       return count;
+}
+
+static const struct file_operations qos_dls_op_ops = {
+       .read = qos_dls_op_read,
+       .write = qos_dls_op_write,
+       .open = mac80211_open_file_generic,
+};
+
+#define DEBUGFS_TSINFO_FILE(_name, min_val, max_val)                   \
+static ssize_t tsinfo_ ##_name## _read(struct file *file,              \
+                                      char __user *userbuf,            \
+                                      size_t count, loff_t *ppos)      \
+{                                                                      \
+       char buf[20];                                                   \
+       int res = scnprintf(buf, count, "%u\n",                         \
+                       IEEE80211_TSINFO_## _name (_tspec.ts_info));    \
+       return simple_read_from_buffer(userbuf, count, ppos, buf, res); \
+}                                                                      \
+                                                                       \
+static ssize_t tsinfo_ ##_name## _write(struct file *file,             \
+                                       const char __user *userbuf,     \
+                                       size_t count, loff_t *ppos)     \
+{                                                                      \
+       char buf[20];                                                   \
+       size_t size;                                                    \
+       int val;                                                        \
+                                                                       \
+       size = min(sizeof(buf) - 1, count);                             \
+       buf[size] = '\0';                                               \
+       if (copy_from_user(buf, userbuf, size))                         \
+               return -EFAULT;                                         \
+                                                                       \
+       val = simple_strtoul(buf, NULL, 0);                             \
+       if ((val < min_val) || (val > max_val)) {                       \
+               struct ieee80211_sub_if_data *sdata = file->private_data;\
+               printk(KERN_ERR "%s: set value (%u) out of range "      \
+                      "[%u, %u]\n",sdata->dev->name,val,min_val,max_val);\
+               return -EINVAL;                                         \
+       }                                                               \
+       SET_TSINFO_ ##_name (_tspec.ts_info, val);                      \
+       return count;                                                   \
+}                                                                      \
+                                                                       \
+static const struct file_operations tsinfo_ ##_name## _ops = {         \
+       .read = tsinfo_ ##_name## _read,                                \
+       .write = tsinfo_ ##_name## _write,                              \
+       .open = mac80211_open_file_generic,                             \
+};
+
+#define DEBUGFS_TSINFO_ADD_TSID                                                \
+       sdata->debugfs.sta.tsinfo.tsid =                                \
+               debugfs_create_file("tsid", 0444, tsinfod,              \
+                                   sdata, &tsinfo_TSID_ops);
+
+#define DEBUGFS_TSINFO_ADD_DIR                                         \
+       sdata->debugfs.sta.tsinfo.direction =                           \
+               debugfs_create_file("direction", 0444, tsinfod,         \
+                                   sdata, &tsinfo_DIR_ops);
+
+#define DEBUGFS_TSINFO_ADD_UP                                          \
+       sdata->debugfs.sta.tsinfo.up =                                  \
+               debugfs_create_file("up", 0444, tsinfod,                \
+                                   sdata, &tsinfo_UP_ops);
+
+#define DEBUGFS_TSINFO_DEL(name)                                       \
+       do {                                                            \
+               debugfs_remove(sdata->debugfs.sta.tsinfo.name);         \
+               sdata->debugfs.sta.tsinfo.name = NULL;                  \
+       } while (0)
+
+DEBUGFS_TSINFO_FILE(TSID, 8, 15);
+DEBUGFS_TSINFO_FILE(DIR, 0, 3);
+DEBUGFS_TSINFO_FILE(UP, 0, 7);
+
+#define DEBUGFS_TSPEC_FILE(name)                                       \
+static ssize_t tspec_ ##name## _read(struct file *file,                        \
+                                     char __user *userbuf,             \
+                                     size_t count, loff_t *ppos)       \
+{                                                                      \
+       char buf[20];                                                   \
+       int res = scnprintf(buf, count, "%u\n", _tspec.name);           \
+       return simple_read_from_buffer(userbuf, count, ppos, buf, res); \
+}                                                                      \
+                                                                       \
+static ssize_t tspec_ ##name## _write(struct file *file,               \
+                                      const char __user *userbuf,      \
+                                      size_t count, loff_t *ppos)      \
+{                                                                      \
+       char buf[20];                                                   \
+       size_t size;                                                    \
+                                                                       \
+       size = min(sizeof(buf) - 1, count);                             \
+       buf[size] = '\0';                                               \
+       if (copy_from_user(buf, userbuf, size))                         \
+               return -EFAULT;                                         \
+                                                                       \
+       _tspec.name = simple_strtoul(buf, NULL, 0);                     \
+       return count;                                                   \
+}                                                                      \
+                                                                       \
+static const struct file_operations tspec_ ##name## _ops = {           \
+       .read = tspec_ ##name## _read,                                  \
+       .write = tspec_ ##name## _write,                                \
+       .open = mac80211_open_file_generic,                             \
+};
+
+#define DEBUGFS_TSPEC_ADD(name)                                                \
+       sdata->debugfs.sta.tspec.name = debugfs_create_file(#name,      \
+               0444, tspecd, sdata, &tspec_ ##name## _ops);
+
+#define DEBUGFS_TSPEC_DEL(name)                                                \
+       do {                                                            \
+               debugfs_remove(sdata->debugfs.sta.tspec.name);          \
+               sdata->debugfs.sta.tspec.name = NULL;                   \
+       } while (0)
+
+DEBUGFS_TSPEC_FILE(nominal_msdu_size);
+DEBUGFS_TSPEC_FILE(max_msdu_size);
+DEBUGFS_TSPEC_FILE(min_service_interval);
+DEBUGFS_TSPEC_FILE(max_service_interval);
+DEBUGFS_TSPEC_FILE(inactivity_interval);
+DEBUGFS_TSPEC_FILE(suspension_interval);
+DEBUGFS_TSPEC_FILE(service_start_time);
+DEBUGFS_TSPEC_FILE(min_data_rate);
+DEBUGFS_TSPEC_FILE(mean_data_rate);
+DEBUGFS_TSPEC_FILE(peak_data_rate);
+DEBUGFS_TSPEC_FILE(burst_size);
+DEBUGFS_TSPEC_FILE(delay_bound);
+DEBUGFS_TSPEC_FILE(min_phy_rate);
+DEBUGFS_TSPEC_FILE(surplus_band_allow);
+DEBUGFS_TSPEC_FILE(medium_time);
+
+
+/* common attributes */
+IEEE80211_IF_FILE(channel_use, channel_use, DEC);
+IEEE80211_IF_FILE(drop_unencrypted, drop_unencrypted, DEC);
+IEEE80211_IF_FILE(eapol, eapol, DEC);
+IEEE80211_IF_FILE(ieee8021_x, ieee802_1x, DEC);
+
+/* STA/IBSS attributes */
+IEEE80211_IF_FILE(state, u.sta.state, DEC);
+IEEE80211_IF_FILE(bssid, u.sta.bssid, MAC);
+IEEE80211_IF_FILE(prev_bssid, u.sta.prev_bssid, MAC);
+IEEE80211_IF_FILE(ssid_len, u.sta.ssid_len, SIZE);
+IEEE80211_IF_FILE(aid, u.sta.aid, DEC);
+IEEE80211_IF_FILE(ap_capab, u.sta.ap_capab, HEX);
+IEEE80211_IF_FILE(capab, u.sta.capab, HEX);
+IEEE80211_IF_FILE(extra_ie_len, u.sta.extra_ie_len, SIZE);
+IEEE80211_IF_FILE(auth_tries, u.sta.auth_tries, DEC);
+IEEE80211_IF_FILE(assoc_tries, u.sta.assoc_tries, DEC);
+IEEE80211_IF_FILE(auth_algs, u.sta.auth_algs, HEX);
+IEEE80211_IF_FILE(auth_alg, u.sta.auth_alg, DEC);
+IEEE80211_IF_FILE(auth_transaction, u.sta.auth_transaction, DEC);
+
+static ssize_t ieee80211_if_fmt_flags(
+       const struct ieee80211_sub_if_data *sdata, char *buf, int buflen)
+{
+       return scnprintf(buf, buflen, "%s%s%s%s%s%s%s\n",
+                        sdata->u.sta.ssid_set ? "SSID\n" : "",
+                        sdata->u.sta.bssid_set ? "BSSID\n" : "",
+                        sdata->u.sta.prev_bssid_set ? "prev BSSID\n" : "",
+                        sdata->u.sta.authenticated ? "AUTH\n" : "",
+                        sdata->u.sta.associated ? "ASSOC\n" : "",
+                        sdata->u.sta.probereq_poll ? "PROBEREQ POLL\n" : "",
+                        sdata->u.sta.use_protection ? "CTS prot\n" : "");
+}
+__IEEE80211_IF_FILE(flags);
+
+/* AP attributes */
+IEEE80211_IF_FILE(num_sta_ps, u.ap.num_sta_ps, ATOMIC);
+IEEE80211_IF_FILE(dtim_period, u.ap.dtim_period, DEC);
+IEEE80211_IF_FILE(dtim_count, u.ap.dtim_count, DEC);
+IEEE80211_IF_FILE(num_beacons, u.ap.num_beacons, DEC);
+IEEE80211_IF_FILE(force_unicast_rateidx, u.ap.force_unicast_rateidx, DEC);
+IEEE80211_IF_FILE(max_ratectrl_rateidx, u.ap.max_ratectrl_rateidx, DEC);
+
+static ssize_t ieee80211_if_fmt_num_buffered_multicast(
+       const struct ieee80211_sub_if_data *sdata, char *buf, int buflen)
+{
+       return scnprintf(buf, buflen, "%u\n",
+                        skb_queue_len(&sdata->u.ap.ps_bc_buf));
+}
+__IEEE80211_IF_FILE(num_buffered_multicast);
+
+static ssize_t ieee80211_if_fmt_beacon_head_len(
+       const struct ieee80211_sub_if_data *sdata, char *buf, int buflen)
+{
+       if (sdata->u.ap.beacon_head)
+               return scnprintf(buf, buflen, "%d\n",
+                                sdata->u.ap.beacon_head_len);
+       return scnprintf(buf, buflen, "\n");
+}
+__IEEE80211_IF_FILE(beacon_head_len);
+
+static ssize_t ieee80211_if_fmt_beacon_tail_len(
+       const struct ieee80211_sub_if_data *sdata, char *buf, int buflen)
+{
+       if (sdata->u.ap.beacon_tail)
+               return scnprintf(buf, buflen, "%d\n",
+                                sdata->u.ap.beacon_tail_len);
+       return scnprintf(buf, buflen, "\n");
+}
+__IEEE80211_IF_FILE(beacon_tail_len);
+
+/* WDS attributes */
+IEEE80211_IF_FILE(peer, u.wds.remote_addr, MAC);
+
+/* VLAN attributes */
+IEEE80211_IF_FILE(vlan_id, u.vlan.id, DEC);
+
+/* MONITOR attributes */
+static ssize_t ieee80211_if_fmt_mode(
+       const struct ieee80211_sub_if_data *sdata, char *buf, int buflen)
+{
+       struct ieee80211_local *local = sdata->local;
+
+       return scnprintf(buf, buflen, "%s\n",
+                        ((local->hw.flags & IEEE80211_HW_MONITOR_DURING_OPER) ||
+                         local->open_count == local->monitors) ?
+                        "hard" : "soft");
+}
+__IEEE80211_IF_FILE(mode);
+
+
+#define DEBUGFS_ADD(name, type)\
+       sdata->debugfs.type.name = debugfs_create_file(#name, 0444,\
+               sdata->debugfsdir, sdata, &name##_ops);
+
+static void add_sta_files(struct ieee80211_sub_if_data *sdata)
+{
+       struct dentry *qosd;
+       struct dentry *tsinfod;
+       struct dentry *tspecd;
+
+       DEBUGFS_ADD(channel_use, sta);
+       DEBUGFS_ADD(drop_unencrypted, sta);
+       DEBUGFS_ADD(eapol, sta);
+       DEBUGFS_ADD(ieee8021_x, sta);
+       DEBUGFS_ADD(state, sta);
+       DEBUGFS_ADD(bssid, sta);
+       DEBUGFS_ADD(prev_bssid, sta);
+       DEBUGFS_ADD(ssid_len, sta);
+       DEBUGFS_ADD(aid, sta);
+       DEBUGFS_ADD(ap_capab, sta);
+       DEBUGFS_ADD(capab, sta);
+       DEBUGFS_ADD(extra_ie_len, sta);
+       DEBUGFS_ADD(auth_tries, sta);
+       DEBUGFS_ADD(assoc_tries, sta);
+       DEBUGFS_ADD(auth_algs, sta);
+       DEBUGFS_ADD(auth_alg, sta);
+       DEBUGFS_ADD(auth_transaction, sta);
+       DEBUGFS_ADD(flags, sta);
+
+       qosd = debugfs_create_dir("qos", sdata->debugfsdir);
+       sdata->debugfs.sta.qos_dir = qosd;
+
+       DEBUGFS_QOS_ADD(addts_11e);
+       DEBUGFS_QOS_ADD(addts_wmm);
+       DEBUGFS_QOS_ADD(delts_11e);
+       DEBUGFS_QOS_ADD(delts_wmm);
+       DEBUGFS_QOS_ADD(dls_mac);
+       DEBUGFS_QOS_ADD(dls_op);
+
+       tsinfod = debugfs_create_dir("ts_info", qosd);
+       sdata->debugfs.sta.tsinfo_dir = tsinfod;
+
+       DEBUGFS_TSINFO_ADD_TSID;
+       DEBUGFS_TSINFO_ADD_DIR;
+       DEBUGFS_TSINFO_ADD_UP;
+
+       tspecd = debugfs_create_dir("tspec", qosd);
+       sdata->debugfs.sta.tspec_dir = tspecd;
+
+       DEBUGFS_TSPEC_ADD(nominal_msdu_size);
+       DEBUGFS_TSPEC_ADD(max_msdu_size);
+       DEBUGFS_TSPEC_ADD(min_service_interval);
+       DEBUGFS_TSPEC_ADD(max_service_interval);
+       DEBUGFS_TSPEC_ADD(inactivity_interval);
+       DEBUGFS_TSPEC_ADD(suspension_interval);
+       DEBUGFS_TSPEC_ADD(service_start_time);
+       DEBUGFS_TSPEC_ADD(min_data_rate);
+       DEBUGFS_TSPEC_ADD(mean_data_rate);
+       DEBUGFS_TSPEC_ADD(peak_data_rate);
+       DEBUGFS_TSPEC_ADD(burst_size);
+       DEBUGFS_TSPEC_ADD(delay_bound);
+       DEBUGFS_TSPEC_ADD(min_phy_rate);
+       DEBUGFS_TSPEC_ADD(surplus_band_allow);
+       DEBUGFS_TSPEC_ADD(medium_time);
+}
+
+static void add_ap_files(struct ieee80211_sub_if_data *sdata)
+{
+       DEBUGFS_ADD(channel_use, ap);
+       DEBUGFS_ADD(drop_unencrypted, ap);
+       DEBUGFS_ADD(eapol, ap);
+       DEBUGFS_ADD(ieee8021_x, ap);
+       DEBUGFS_ADD(num_sta_ps, ap);
+       DEBUGFS_ADD(dtim_period, ap);
+       DEBUGFS_ADD(dtim_count, ap);
+       DEBUGFS_ADD(num_beacons, ap);
+       DEBUGFS_ADD(force_unicast_rateidx, ap);
+       DEBUGFS_ADD(max_ratectrl_rateidx, ap);
+       DEBUGFS_ADD(num_buffered_multicast, ap);
+       DEBUGFS_ADD(beacon_head_len, ap);
+       DEBUGFS_ADD(beacon_tail_len, ap);
+}
+
+static void add_wds_files(struct ieee80211_sub_if_data *sdata)
+{
+       DEBUGFS_ADD(channel_use, wds);
+       DEBUGFS_ADD(drop_unencrypted, wds);
+       DEBUGFS_ADD(eapol, wds);
+       DEBUGFS_ADD(ieee8021_x, wds);
+       DEBUGFS_ADD(peer, wds);
+}
+
+static void add_vlan_files(struct ieee80211_sub_if_data *sdata)
+{
+       DEBUGFS_ADD(channel_use, vlan);
+       DEBUGFS_ADD(drop_unencrypted, vlan);
+       DEBUGFS_ADD(eapol, vlan);
+       DEBUGFS_ADD(ieee8021_x, vlan);
+       DEBUGFS_ADD(vlan_id, vlan);
+}
+
+static void add_monitor_files(struct ieee80211_sub_if_data *sdata)
+{
+       DEBUGFS_ADD(mode, monitor);
+}
+
+static void add_files(struct ieee80211_sub_if_data *sdata)
+{
+       if (!sdata->debugfsdir)
+               return;
+
+       switch (sdata->type) {
+       case IEEE80211_IF_TYPE_STA:
+       case IEEE80211_IF_TYPE_IBSS:
+               add_sta_files(sdata);
+               break;
+       case IEEE80211_IF_TYPE_AP:
+               add_ap_files(sdata);
+               break;
+       case IEEE80211_IF_TYPE_WDS:
+               add_wds_files(sdata);
+               break;
+       case IEEE80211_IF_TYPE_MNTR:
+               add_monitor_files(sdata);
+               break;
+       case IEEE80211_IF_TYPE_VLAN:
+               add_vlan_files(sdata);
+               break;
+       default:
+               break;
+       }
+}
+
+#define DEBUGFS_DEL(name, type)                                        \
+       do {                                                    \
+               debugfs_remove(sdata->debugfs.type.name);       \
+               sdata->debugfs.type.name = NULL;                \
+       } while (0)
+
+static void del_sta_files(struct ieee80211_sub_if_data *sdata)
+{
+       DEBUGFS_DEL(channel_use, sta);
+       DEBUGFS_DEL(drop_unencrypted, sta);
+       DEBUGFS_DEL(eapol, sta);
+       DEBUGFS_DEL(ieee8021_x, sta);
+       DEBUGFS_DEL(state, sta);
+       DEBUGFS_DEL(bssid, sta);
+       DEBUGFS_DEL(prev_bssid, sta);
+       DEBUGFS_DEL(ssid_len, sta);
+       DEBUGFS_DEL(aid, sta);
+       DEBUGFS_DEL(ap_capab, sta);
+       DEBUGFS_DEL(capab, sta);
+       DEBUGFS_DEL(extra_ie_len, sta);
+       DEBUGFS_DEL(auth_tries, sta);
+       DEBUGFS_DEL(assoc_tries, sta);
+       DEBUGFS_DEL(auth_algs, sta);
+       DEBUGFS_DEL(auth_alg, sta);
+       DEBUGFS_DEL(auth_transaction, sta);
+       DEBUGFS_DEL(flags, sta);
+
+       DEBUGFS_TSINFO_DEL(tsid);
+       DEBUGFS_TSINFO_DEL(direction);
+       DEBUGFS_TSINFO_DEL(up);
+
+       DEBUGFS_TSPEC_DEL(nominal_msdu_size);
+       DEBUGFS_TSPEC_DEL(max_msdu_size);
+       DEBUGFS_TSPEC_DEL(min_service_interval);
+       DEBUGFS_TSPEC_DEL(max_service_interval);
+       DEBUGFS_TSPEC_DEL(inactivity_interval);
+       DEBUGFS_TSPEC_DEL(suspension_interval);
+       DEBUGFS_TSPEC_DEL(service_start_time);
+       DEBUGFS_TSPEC_DEL(min_data_rate);
+       DEBUGFS_TSPEC_DEL(mean_data_rate);
+       DEBUGFS_TSPEC_DEL(peak_data_rate);
+       DEBUGFS_TSPEC_DEL(burst_size);
+       DEBUGFS_TSPEC_DEL(delay_bound);
+       DEBUGFS_TSPEC_DEL(min_phy_rate);
+       DEBUGFS_TSPEC_DEL(surplus_band_allow);
+       DEBUGFS_TSPEC_DEL(medium_time);
+
+       DEBUGFS_QOS_DEL(addts_11e);
+       DEBUGFS_QOS_DEL(addts_wmm);
+       DEBUGFS_QOS_DEL(delts_11e);
+       DEBUGFS_QOS_DEL(delts_wmm);
+       DEBUGFS_QOS_DEL(dls_mac);
+       DEBUGFS_QOS_DEL(dls_op);
+
+       debugfs_remove(sdata->debugfs.sta.tspec_dir);
+       sdata->debugfs.sta.tspec_dir = NULL;
+       debugfs_remove(sdata->debugfs.sta.tsinfo_dir);
+       sdata->debugfs.sta.tsinfo_dir = NULL;
+       debugfs_remove(sdata->debugfs.sta.qos_dir);
+       sdata->debugfs.sta.qos_dir = NULL;
+}
+
+static void del_ap_files(struct ieee80211_sub_if_data *sdata)
+{
+       DEBUGFS_DEL(channel_use, ap);
+       DEBUGFS_DEL(drop_unencrypted, ap);
+       DEBUGFS_DEL(eapol, ap);
+       DEBUGFS_DEL(ieee8021_x, ap);
+       DEBUGFS_DEL(num_sta_ps, ap);
+       DEBUGFS_DEL(dtim_period, ap);
+       DEBUGFS_DEL(dtim_count, ap);
+       DEBUGFS_DEL(num_beacons, ap);
+       DEBUGFS_DEL(force_unicast_rateidx, ap);
+       DEBUGFS_DEL(max_ratectrl_rateidx, ap);
+       DEBUGFS_DEL(num_buffered_multicast, ap);
+       DEBUGFS_DEL(beacon_head_len, ap);
+       DEBUGFS_DEL(beacon_tail_len, ap);
+}
+
+static void del_wds_files(struct ieee80211_sub_if_data *sdata)
+{
+       DEBUGFS_DEL(channel_use, wds);
+       DEBUGFS_DEL(drop_unencrypted, wds);
+       DEBUGFS_DEL(eapol, wds);
+       DEBUGFS_DEL(ieee8021_x, wds);
+       DEBUGFS_DEL(peer, wds);
+}
+
+static void del_vlan_files(struct ieee80211_sub_if_data *sdata)
+{
+       DEBUGFS_DEL(channel_use, vlan);
+       DEBUGFS_DEL(drop_unencrypted, vlan);
+       DEBUGFS_DEL(eapol, vlan);
+       DEBUGFS_DEL(ieee8021_x, vlan);
+       DEBUGFS_DEL(vlan_id, vlan);
+}
+
+static void del_monitor_files(struct ieee80211_sub_if_data *sdata)
+{
+       DEBUGFS_DEL(mode, monitor);
+}
+
+static void del_files(struct ieee80211_sub_if_data *sdata, int type)
+{
+       if (!sdata->debugfsdir)
+               return;
+
+       switch (type) {
+       case IEEE80211_IF_TYPE_STA:
+       case IEEE80211_IF_TYPE_IBSS:
+               del_sta_files(sdata);
+               break;
+       case IEEE80211_IF_TYPE_AP:
+               del_ap_files(sdata);
+               break;
+       case IEEE80211_IF_TYPE_WDS:
+               del_wds_files(sdata);
+               break;
+       case IEEE80211_IF_TYPE_MNTR:
+               del_monitor_files(sdata);
+               break;
+       case IEEE80211_IF_TYPE_VLAN:
+               del_vlan_files(sdata);
+               break;
+       default:
+               break;
+       }
+}
+
+static int notif_registered;
+
+void ieee80211_debugfs_add_netdev(struct ieee80211_sub_if_data *sdata)
+{
+       char buf[10+IFNAMSIZ];
+
+       if (!notif_registered)
+               return;
+
+       sprintf(buf, "netdev:%s", sdata->dev->name);
+       sdata->debugfsdir = debugfs_create_dir(buf,
+               sdata->local->hw.wiphy->debugfsdir);
+}
+
+void ieee80211_debugfs_remove_netdev(struct ieee80211_sub_if_data *sdata)
+{
+       del_files(sdata, sdata->type);
+       debugfs_remove(sdata->debugfsdir);
+       sdata->debugfsdir = NULL;
+}
+
+void ieee80211_debugfs_change_if_type(struct ieee80211_sub_if_data *sdata,
+                                     int oldtype)
+{
+       del_files(sdata, oldtype);
+       add_files(sdata);
+}
+
+static int netdev_notify(struct notifier_block * nb,
+                        unsigned long state,
+                        void *ndev)
+{
+       struct net_device *dev = ndev;
+       char buf[10+IFNAMSIZ];
+
+       if (state != NETDEV_CHANGENAME)
+               return 0;
+
+       if (!dev->ieee80211_ptr || !dev->ieee80211_ptr->wiphy)
+               return 0;
+
+       if (dev->ieee80211_ptr->wiphy->privid != mac80211_wiphy_privid)
+               return 0;
+
+       /* TODO
+       sprintf(buf, "netdev:%s", dev->name);
+       debugfs_rename(IEEE80211_DEV_TO_SUB_IF(dev)->debugfsdir, buf);
+       */
+
+       return 0;
+}
+
+static struct notifier_block mac80211_debugfs_netdev_notifier = {
+       .notifier_call = netdev_notify,
+};
+
+void ieee80211_debugfs_netdev_init(void)
+{
+       int err;
+
+       err = register_netdevice_notifier(&mac80211_debugfs_netdev_notifier);
+       if (err) {
+               printk(KERN_ERR
+                      "mac80211: failed to install netdev notifier,"
+                      " disabling per-netdev debugfs!\n");
+       } else
+               notif_registered = 1;
+}
+
+void ieee80211_debugfs_netdev_exit(void)
+{
+       unregister_netdevice_notifier(&mac80211_debugfs_netdev_notifier);
+       notif_registered = 0;
+}
diff --git a/package/mac80211/src/mac80211/debugfs_netdev.h b/package/mac80211/src/mac80211/debugfs_netdev.h
new file mode 100644 (file)
index 0000000..a690071
--- /dev/null
@@ -0,0 +1,30 @@
+/* routines exported for debugfs handling */
+
+#ifndef __IEEE80211_DEBUGFS_NETDEV_H
+#define __IEEE80211_DEBUGFS_NETDEV_H
+
+#ifdef CONFIG_MAC80211_DEBUGFS
+void ieee80211_debugfs_add_netdev(struct ieee80211_sub_if_data *sdata);
+void ieee80211_debugfs_remove_netdev(struct ieee80211_sub_if_data *sdata);
+void ieee80211_debugfs_change_if_type(struct ieee80211_sub_if_data *sdata,
+                                    int oldtype);
+void ieee80211_debugfs_netdev_init(void);
+void ieee80211_debugfs_netdev_exit(void);
+#else
+static inline void ieee80211_debugfs_add_netdev(
+       struct ieee80211_sub_if_data *sdata)
+{}
+static inline void ieee80211_debugfs_remove_netdev(
+       struct ieee80211_sub_if_data *sdata)
+{}
+static inline void ieee80211_debugfs_change_if_type(
+       struct ieee80211_sub_if_data *sdata, int oldtype)
+{}
+static inline void ieee80211_debugfs_netdev_init(void)
+{}
+
+static inline void ieee80211_debugfs_netdev_exit(void)
+{}
+#endif
+
+#endif /* __IEEE80211_DEBUGFS_NETDEV_H */
diff --git a/package/mac80211/src/mac80211/debugfs_sta.c b/package/mac80211/src/mac80211/debugfs_sta.c
new file mode 100644 (file)
index 0000000..fc1a024
--- /dev/null
@@ -0,0 +1,247 @@
+/*
+ * Copyright 2003-2005 Devicescape Software, Inc.
+ * Copyright (c) 2006  Jiri Benc <jbenc@suse.cz>
+ * Copyright 2007      Johannes Berg <johannes@sipsolutions.net>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/debugfs.h>
+#include <linux/ieee80211.h>
+#include "ieee80211_i.h"
+#include "debugfs.h"
+#include "debugfs_sta.h"
+#include "sta_info.h"
+
+/* sta attributtes */
+
+#define STA_READ(name, buflen, field, format_string)                   \
+static ssize_t sta_ ##name## _read(struct file *file,                  \
+                                  char __user *userbuf,                \
+                                  size_t count, loff_t *ppos)          \
+{                                                                      \
+       int res;                                                        \
+       struct sta_info *sta = file->private_data;                      \
+       char buf[buflen];                                               \
+       res = scnprintf(buf, buflen, format_string, sta->field);        \
+       return simple_read_from_buffer(userbuf, count, ppos, buf, res); \
+}
+#define STA_READ_D(name, field) STA_READ(name, 20, field, "%d\n")
+#define STA_READ_U(name, field) STA_READ(name, 20, field, "%u\n")
+#define STA_READ_LU(name, field) STA_READ(name, 20, field, "%lu\n")
+#define STA_READ_S(name, field) STA_READ(name, 20, field, "%s\n")
+
+#define STA_READ_RATE(name, field)                                     \
+static ssize_t sta_##name##_read(struct file *file,                    \
+                                char __user *userbuf,                  \
+                                size_t count, loff_t *ppos)            \
+{                                                                      \
+       struct sta_info *sta = file->private_data;                      \
+       struct ieee80211_local *local = wdev_priv(sta->dev->ieee80211_ptr);\
+       struct ieee80211_hw_mode *mode = local->oper_hw_mode;           \
+       char buf[20];                                                   \
+       int res = scnprintf(buf, sizeof(buf), "%d\n",                   \
+                           (sta->field >= 0 &&                         \
+                           sta->field < mode->num_rates) ?             \
+                           mode->rates[sta->field].rate : -1);         \
+       return simple_read_from_buffer(userbuf, count, ppos, buf, res); \
+}
+
+#define STA_OPS(name)                                                  \
+static const struct file_operations sta_ ##name## _ops = {             \
+       .read = sta_##name##_read,                                      \
+       .open = mac80211_open_file_generic,                             \
+}
+
+#define STA_FILE(name, field, format)                                  \
+               STA_READ_##format(name, field)                          \
+               STA_OPS(name)
+
+STA_FILE(aid, aid, D);
+STA_FILE(key_idx_compression, key_idx_compression, D);
+STA_FILE(dev, dev->name, S);
+STA_FILE(vlan_id, vlan_id, D);
+STA_FILE(rx_packets, rx_packets, LU);
+STA_FILE(tx_packets, tx_packets, LU);
+STA_FILE(rx_bytes, rx_bytes, LU);
+STA_FILE(tx_bytes, tx_bytes, LU);
+STA_FILE(rx_duplicates, num_duplicates, LU);
+STA_FILE(rx_fragments, rx_fragments, LU);
+STA_FILE(rx_dropped, rx_dropped, LU);
+STA_FILE(tx_fragments, tx_fragments, LU);
+STA_FILE(tx_filtered, tx_filtered_count, LU);
+STA_FILE(txrate, txrate, RATE);
+STA_FILE(last_txrate, last_txrate, RATE);
+STA_FILE(tx_retry_failed, tx_retry_failed, LU);
+STA_FILE(tx_retry_count, tx_retry_count, LU);
+STA_FILE(last_rssi, last_rssi, D);
+STA_FILE(last_signal, last_signal, D);
+STA_FILE(last_noise, last_noise, D);
+STA_FILE(channel_use, channel_use, D);
+STA_FILE(wep_weak_iv_count, wep_weak_iv_count, D);
+
+static ssize_t sta_flags_read(struct file *file, char __user *userbuf,
+                             size_t count, loff_t *ppos)
+{
+       char buf[100];
+       struct sta_info *sta = file->private_data;
+       int res = scnprintf(buf, sizeof(buf), "%s%s%s%s%s%s%s%s%s%s",
+               sta->flags & WLAN_STA_AUTH ? "AUTH\n" : "",
+               sta->flags & WLAN_STA_ASSOC ? "ASSOC\n" : "",
+               sta->flags & WLAN_STA_PS ? "PS\n" : "",
+               sta->flags & WLAN_STA_TIM ? "TIM\n" : "",
+               sta->flags & WLAN_STA_PERM ? "PERM\n" : "",
+               sta->flags & WLAN_STA_AUTHORIZED ? "AUTHORIZED\n" : "",
+               sta->flags & WLAN_STA_SHORT_PREAMBLE ? "SHORT PREAMBLE\n" : "",
+               sta->flags & WLAN_STA_WME ? "WME\n" : "",
+               sta->flags & WLAN_STA_HT ? "HT\n" : "",
+               sta->flags & WLAN_STA_WDS ? "WDS\n" : "");
+       return simple_read_from_buffer(userbuf, count, ppos, buf, res);
+}
+STA_OPS(flags);
+
+static ssize_t sta_num_ps_buf_frames_read(struct file *file,
+                                         char __user *userbuf,
+                                         size_t count, loff_t *ppos)
+{
+       char buf[20];
+       struct sta_info *sta = file->private_data;
+       int res = scnprintf(buf, sizeof(buf), "%u\n",
+                           skb_queue_len(&sta->ps_tx_buf));
+       return simple_read_from_buffer(userbuf, count, ppos, buf, res);
+}
+STA_OPS(num_ps_buf_frames);
+
+static ssize_t sta_last_ack_rssi_read(struct file *file, char __user *userbuf,
+                                     size_t count, loff_t *ppos)
+{
+       char buf[100];
+       struct sta_info *sta = file->private_data;
+       int res = scnprintf(buf, sizeof(buf), "%d %d %d\n",
+                           sta->last_ack_rssi[0],
+                           sta->last_ack_rssi[1],
+                           sta->last_ack_rssi[2]);
+       return simple_read_from_buffer(userbuf, count, ppos, buf, res);
+}
+STA_OPS(last_ack_rssi);
+
+static ssize_t sta_last_ack_ms_read(struct file *file, char __user *userbuf,
+                                   size_t count, loff_t *ppos)
+{
+       char buf[20];
+       struct sta_info *sta = file->private_data;
+       int res = scnprintf(buf, sizeof(buf), "%d\n",
+                           sta->last_ack ?
+                           jiffies_to_msecs(jiffies - sta->last_ack) : -1);
+       return simple_read_from_buffer(userbuf, count, ppos, buf, res);
+}
+STA_OPS(last_ack_ms);
+
+static ssize_t sta_inactive_ms_read(struct file *file, char __user *userbuf,
+                                   size_t count, loff_t *ppos)
+{
+       char buf[20];
+       struct sta_info *sta = file->private_data;
+       int res = scnprintf(buf, sizeof(buf), "%d\n",
+                           jiffies_to_msecs(jiffies - sta->last_rx));
+       return simple_read_from_buffer(userbuf, count, ppos, buf, res);
+}
+STA_OPS(inactive_ms);
+
+static ssize_t sta_last_seq_ctrl_read(struct file *file, char __user *userbuf,
+                                     size_t count, loff_t *ppos)
+{
+       char buf[15*NUM_RX_DATA_QUEUES], *p = buf;
+       int i;
+       struct sta_info *sta = file->private_data;
+       for (i = 0; i < NUM_RX_DATA_QUEUES; i++)
+               p += scnprintf(p, sizeof(buf)+buf-p, "%x ",
+                              sta->last_seq_ctrl[i]);
+       p += scnprintf(p, sizeof(buf)+buf-p, "\n");
+       return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
+}
+STA_OPS(last_seq_ctrl);
+
+#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
+static ssize_t sta_wme_rx_queue_read(struct file *file, char __user *userbuf,
+                                    size_t count, loff_t *ppos)
+{
+       char buf[15*NUM_RX_DATA_QUEUES], *p = buf;
+       int i;
+       struct sta_info *sta = file->private_data;
+       for (i = 0; i < NUM_RX_DATA_QUEUES; i++)
+               p += scnprintf(p, sizeof(buf)+buf-p, "%u ",
+                              sta->wme_rx_queue[i]);
+       p += scnprintf(p, sizeof(buf)+buf-p, "\n");
+       return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
+}
+STA_OPS(wme_rx_queue);
+
+static ssize_t sta_wme_tx_queue_read(struct file *file, char __user *userbuf,
+                                    size_t count, loff_t *ppos)
+{
+       char buf[15*NUM_TX_DATA_QUEUES], *p = buf;
+       int i;
+       struct sta_info *sta = file->private_data;
+       for (i = 0; i < NUM_TX_DATA_QUEUES; i++)
+               p += scnprintf(p, sizeof(buf)+buf-p, "%u ",
+                              sta->wme_tx_queue[i]);
+       p += scnprintf(p, sizeof(buf)+buf-p, "\n");
+       return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
+}
+STA_OPS(wme_tx_queue);
+#endif
+
+#define DEBUGFS_ADD(name) \
+       sta->debugfs.name = debugfs_create_file(#name, 0444, \
+               sta->debugfs.dir, sta, &sta_ ##name## _ops);
+
+#define DEBUGFS_DEL(name) \
+       debugfs_remove(sta->debugfs.name);\
+       sta->debugfs.name = NULL;
+
+
+void ieee80211_sta_debugfs_add(struct sta_info *sta)
+{
+       char buf[3*6];
+       struct dentry *stations_dir = sta->local->debugfs.stations;
+
+       if (!stations_dir)
+               return;
+
+       sprintf(buf, MAC_FMT, MAC_ARG(sta->addr));
+
+       sta->debugfs.dir = debugfs_create_dir(buf, stations_dir);
+       if (!sta->debugfs.dir)
+               return;
+
+       DEBUGFS_ADD(flags);
+       DEBUGFS_ADD(num_ps_buf_frames);
+       DEBUGFS_ADD(last_ack_rssi);
+       DEBUGFS_ADD(last_ack_ms);
+       DEBUGFS_ADD(inactive_ms);
+       DEBUGFS_ADD(last_seq_ctrl);
+#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
+       DEBUGFS_ADD(wme_rx_queue);
+       DEBUGFS_ADD(wme_tx_queue);
+#endif
+}
+
+void ieee80211_sta_debugfs_remove(struct sta_info *sta)
+{
+       DEBUGFS_DEL(flags);
+       DEBUGFS_DEL(num_ps_buf_frames);
+       DEBUGFS_DEL(last_ack_rssi);
+       DEBUGFS_DEL(last_ack_ms);
+       DEBUGFS_DEL(inactive_ms);
+       DEBUGFS_DEL(last_seq_ctrl);
+#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
+       DEBUGFS_DEL(wme_rx_queue);
+       DEBUGFS_DEL(wme_tx_queue);
+#endif
+
+       debugfs_remove(sta->debugfs.dir);
+       sta->debugfs.dir = NULL;
+}
diff --git a/package/mac80211/src/mac80211/debugfs_sta.h b/package/mac80211/src/mac80211/debugfs_sta.h
new file mode 100644 (file)
index 0000000..574a1cd
--- /dev/null
@@ -0,0 +1,12 @@
+#ifndef __MAC80211_DEBUGFS_STA_H
+#define __MAC80211_DEBUGFS_STA_H
+
+#ifdef CONFIG_MAC80211_DEBUGFS
+void ieee80211_sta_debugfs_add(struct sta_info *sta);
+void ieee80211_sta_debugfs_remove(struct sta_info *sta);
+#else
+static inline void ieee80211_sta_debugfs_add(struct sta_info *sta) {}
+static inline void ieee80211_sta_debugfs_remove(struct sta_info *sta) {}
+#endif
+
+#endif /* __MAC80211_DEBUGFS_STA_H */
diff --git a/package/mac80211/src/mac80211/hostapd_ioctl.h b/package/mac80211/src/mac80211/hostapd_ioctl.h
new file mode 100644 (file)
index 0000000..e35233c
--- /dev/null
@@ -0,0 +1,344 @@
+/*
+ * Host AP (software wireless LAN access point) user space daemon for
+ * Host AP kernel driver
+ * Copyright 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi>
+ * Copyright 2002-2004, Instant802 Networks, Inc.
+ * Copyright 2005, Devicescape Software, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef HOSTAPD_IOCTL_H
+#define HOSTAPD_IOCTL_H
+
+#ifdef __KERNEL__
+#include <linux/types.h>
+#endif /* __KERNEL__ */
+
+#define PRISM2_IOCTL_PRISM2_PARAM (SIOCIWFIRSTPRIV + 0)
+#define PRISM2_IOCTL_GET_PRISM2_PARAM (SIOCIWFIRSTPRIV + 1)
+#define PRISM2_IOCTL_HOSTAPD (SIOCIWFIRSTPRIV + 3)
+
+/* PRISM2_IOCTL_PRISM2_PARAM ioctl() subtypes:
+ * This table is no longer added to, the whole sub-ioctl
+ * mess shall be deleted completely. */
+enum {
+       PRISM2_PARAM_BEACON_INT = 3,
+       PRISM2_PARAM_AP_BRIDGE_PACKETS = 10,
+       PRISM2_PARAM_DTIM_PERIOD = 11,
+       PRISM2_PARAM_AP_AUTH_ALGS = 15,
+       PRISM2_PARAM_HOST_ENCRYPT = 17,
+       PRISM2_PARAM_HOST_DECRYPT = 18,
+       PRISM2_PARAM_IEEE_802_1X = 23,
+       PRISM2_PARAM_ANTSEL_TX = 24,
+       PRISM2_PARAM_ANTSEL_RX = 25,
+
+       /* Instant802 additions */
+       PRISM2_PARAM_CTS_PROTECT_ERP_FRAMES = 1001,
+       PRISM2_PARAM_DROP_UNENCRYPTED = 1002,
+       PRISM2_PARAM_PREAMBLE = 1003,
+       PRISM2_PARAM_SHORT_SLOT_TIME = 1006,
+       PRISM2_PARAM_NEXT_MODE = 1008,
+       PRISM2_PARAM_CLEAR_KEYS = 1009,
+       PRISM2_PARAM_RADIO_ENABLED = 1010,
+       PRISM2_PARAM_ANTENNA_MODE = 1013,
+       PRISM2_PARAM_PRIVACY_INVOKED = 1014,
+       PRISM2_PARAM_BROADCAST_SSID = 1015,
+       PRISM2_PARAM_STAT_TIME = 1016,
+       PRISM2_PARAM_STA_ANTENNA_SEL = 1017,
+       PRISM2_PARAM_FORCE_UNICAST_RATE = 1018,
+       PRISM2_PARAM_RATE_CTRL_NUM_UP = 1019,
+       PRISM2_PARAM_RATE_CTRL_NUM_DOWN = 1020,
+       PRISM2_PARAM_MAX_RATECTRL_RATE = 1021,
+       PRISM2_PARAM_TX_POWER_REDUCTION = 1022,
+       PRISM2_PARAM_EAPOL = 1023,
+       PRISM2_PARAM_KEY_TX_RX_THRESHOLD = 1024,
+       PRISM2_PARAM_KEY_INDEX = 1025,
+       PRISM2_PARAM_DEFAULT_WEP_ONLY = 1026,
+       PRISM2_PARAM_WIFI_WME_NOACK_TEST = 1033,
+       PRISM2_PARAM_ALLOW_BROADCAST_ALWAYS = 1034,
+       PRISM2_PARAM_SCAN_FLAGS = 1035,
+       PRISM2_PARAM_HW_MODES = 1036,
+       PRISM2_PARAM_CREATE_IBSS = 1037,
+       PRISM2_PARAM_WMM_ENABLED = 1038,
+       PRISM2_PARAM_MIXED_CELL = 1039,
+       PRISM2_PARAM_KEY_MGMT = 1040,
+       PRISM2_PARAM_RADAR_DETECT = 1043,
+       PRISM2_PARAM_SPECTRUM_MGMT = 1044,
+       PRISM2_PARAM_USER_SPACE_MLME = 1045,
+       PRISM2_PARAM_MGMT_IF = 1046,
+};
+
+/* PRISM2_IOCTL_HOSTAPD ioctl() cmd:
+ * This table is no longer added to, the hostapd ioctl
+ * shall be deleted completely. */
+enum {
+       PRISM2_HOSTAPD_FLUSH = 1,
+       PRISM2_HOSTAPD_ADD_STA = 2,
+       PRISM2_HOSTAPD_REMOVE_STA = 3,
+       PRISM2_HOSTAPD_GET_INFO_STA = 4,
+       PRISM2_SET_ENCRYPTION = 6,
+       PRISM2_GET_ENCRYPTION = 7,
+       PRISM2_HOSTAPD_SET_FLAGS_STA = 8,
+       PRISM2_HOSTAPD_MLME = 13,
+
+       /* Instant802 additions */
+       PRISM2_HOSTAPD_SET_BEACON = 1001,
+       PRISM2_HOSTAPD_GET_HW_FEATURES = 1002,
+       PRISM2_HOSTAPD_WPA_TRIGGER = 1004,
+       PRISM2_HOSTAPD_SET_RATE_SETS = 1005,
+       PRISM2_HOSTAPD_ADD_IF = 1006,
+       PRISM2_HOSTAPD_REMOVE_IF = 1007,
+       PRISM2_HOSTAPD_GET_DOT11COUNTERSTABLE = 1008,
+       PRISM2_HOSTAPD_GET_LOAD_STATS = 1009,
+       PRISM2_HOSTAPD_SET_STA_VLAN = 1010,
+       PRISM2_HOSTAPD_SET_GENERIC_INFO_ELEM = 1011,
+       PRISM2_HOSTAPD_SET_CHANNEL_FLAG = 1012,
+       PRISM2_HOSTAPD_SET_REGULATORY_DOMAIN = 1013,
+       PRISM2_HOSTAPD_SET_TX_QUEUE_PARAMS = 1014,
+       PRISM2_HOSTAPD_GET_TX_STATS = 1016,
+       PRISM2_HOSTAPD_UPDATE_IF = 1017,
+       PRISM2_HOSTAPD_SCAN_REQ = 1019,
+       PRISM2_STA_GET_STATE = 1020,
+       PRISM2_HOSTAPD_FLUSH_IFS = 1021,
+       PRISM2_HOSTAPD_SET_RADAR_PARAMS = 1023,
+       PRISM2_HOSTAPD_SET_QUIET_PARAMS = 1024,
+};
+
+#define PRISM2_HOSTAPD_MAX_BUF_SIZE 2048
+#define HOSTAP_CRYPT_ALG_NAME_LEN 16
+
+#ifndef ALIGNED
+#define ALIGNED __attribute__ ((aligned))
+#endif
+
+struct prism2_hostapd_param {
+       u32 cmd;
+       u8 sta_addr[ETH_ALEN];
+       u8 pad[2];
+       union {
+               struct {
+                       u16 aid;
+                       u16 capability;
+                       u8 supp_rates[32];
+                       u8 wds_flags;
+#define IEEE80211_STA_DYNAMIC_ENC BIT(0)
+                       u8 enc_flags;
+                       u16 listen_interval;
+               } add_sta;
+               struct {
+                       u32 inactive_msec;
+                       u32 rx_packets;
+                       u32 tx_packets;
+                       u32 rx_bytes;
+                       u32 tx_bytes;
+                       u32 current_tx_rate; /* in 100 kbps */
+                       u32 channel_use;
+                       u32 flags;
+                       u32 num_ps_buf_frames;
+                       u32 tx_retry_failed;
+                       u32 tx_retry_count;
+                       u32 last_rssi;
+                       u32 last_ack_rssi;
+               } get_info_sta;
+               struct {
+                       char alg[HOSTAP_CRYPT_ALG_NAME_LEN];
+                       u32 flags;
+                       u32 err;
+                       u8 idx;
+#define HOSTAP_SEQ_COUNTER_SIZE 8
+                       u8 seq_counter[HOSTAP_SEQ_COUNTER_SIZE];
+                       u16 key_len;
+                       u8 key[0] ALIGNED;
+               } crypt;
+               struct {
+                       u32 flags_and;
+                       u32 flags_or;
+               } set_flags_sta;
+               struct {
+                       u16 head_len;
+                       u16 tail_len;
+                       u8 data[0] ALIGNED; /* head_len + tail_len bytes */
+               } beacon;
+               struct {
+                       u16 num_modes;
+                       u16 flags;
+                       u8 data[0] ALIGNED; /* num_modes * feature data */
+               } hw_features;
+               struct {
+                       u8  now;
+                       s8  our_mode_only;
+                       s16 last_rx;
+                       u16 channel;
+                       s16 interval; /* seconds */
+                       s32 listen;   /* microseconds */
+               } scan;
+               struct {
+#define WPA_TRIGGER_FAIL_TX_MIC BIT(0)
+#define WPA_TRIGGER_FAIL_TX_ICV BIT(1)
+#define WPA_TRIGGER_FAIL_RX_MIC BIT(2)
+#define WPA_TRIGGER_FAIL_RX_ICV BIT(3)
+#define WPA_TRIGGER_TX_REPLAY BIT(4)
+#define WPA_TRIGGER_TX_REPLAY_FRAG BIT(5)
+#define WPA_TRIGGER_TX_SKIP_SEQ BIT(6)
+                       u32 trigger;
+               } wpa_trigger;
+               struct {
+                       u16 mode; /* MODE_* */
+                       u16 num_supported_rates;
+                       u16 num_basic_rates;
+                       u8 data[0] ALIGNED; /* num_supported_rates * u16 +
+                                            * num_basic_rates * u16 */
+               } set_rate_sets;
+               struct {
+                       u8 type; /* WDS, VLAN, etc */
+                       u8 name[IFNAMSIZ];
+                       u8 data[0] ALIGNED;
+               } if_info;
+               struct dot11_counters {
+                       u32 dot11TransmittedFragmentCount;
+                       u32 dot11MulticastTransmittedFrameCount;
+                       u32 dot11FailedCount;
+                       u32 dot11ReceivedFragmentCount;
+                       u32 dot11MulticastReceivedFrameCount;
+                       u32 dot11FCSErrorCount;
+                       u32 dot11TransmittedFrameCount;
+                       u32 dot11WEPUndecryptableCount;
+                       u32 dot11ACKFailureCount;
+                       u32 dot11RTSFailureCount;
+                       u32 dot11RTSSuccessCount;
+               } dot11CountersTable;
+               struct {
+#define LOAD_STATS_CLEAR BIT(1)
+                       u32 flags;
+                       u32 channel_use;
+               } get_load_stats;
+               struct {
+                       char vlan_name[IFNAMSIZ];
+                       int vlan_id;
+               } set_sta_vlan;
+               struct {
+                       u8 len;
+                       u8 data[0] ALIGNED;
+               } set_generic_info_elem;
+               struct {
+                       u16 mode; /* MODE_* */
+                       u16 chan;
+                       u32 flag;
+                       u8 power_level; /* regulatory limit in dBm */
+                       u8 antenna_max;
+               } set_channel_flag;
+               struct {
+                       u32 rd;
+               } set_regulatory_domain;
+               struct {
+                       u32 queue;
+                       s32 aifs;
+                       u32 cw_min;
+                       u32 cw_max;
+                       u32 burst_time; /* maximum burst time in 0.1 ms, i.e.,
+                                        * 10 = 1 ms */
+               } tx_queue_params;
+               struct ieee80211_tx_stats {
+                       struct {
+                               unsigned int len; /* num packets in queue */
+                               unsigned int limit; /* queue len (soft) limit
+                                                    */
+                               unsigned int count; /* total num frames sent */
+                       } data[4];
+               } get_tx_stats;
+               struct {
+                       u8 ssid_len;
+                       u8 ssid[0] ALIGNED;
+               } scan_req;
+               struct {
+                       u32 state;
+               } sta_get_state;
+               struct {
+#define MLME_STA_DEAUTH 0
+#define MLME_STA_DISASSOC 1
+                       u16 cmd;
+                       u16 reason_code;
+               } mlme;
+               struct {
+                       u8 radar_firpwr_threshold;
+                       u8 radar_rssi_threshold;
+                       u8 pulse_height_threshold;
+                       u8 pulse_rssi_threshold;
+                       u8 pulse_inband_threshold;
+               } radar;
+               struct {
+                       unsigned int period;
+                       unsigned int offset;
+                       unsigned int duration;
+               } quiet;
+               struct {
+                       u8 dummy[80]; /* Make sizeof() this struct large enough
+                                      * with some compiler versions. */
+               } dummy;
+       } u;
+};
+
+#define HOSTAP_CRYPT_FLAG_SET_TX_KEY BIT(0)
+#define HOSTAP_CRYPT_FLAG_PERMANENT BIT(1)
+
+#define HOSTAP_CRYPT_ERR_UNKNOWN_ALG 2
+#define HOSTAP_CRYPT_ERR_UNKNOWN_ADDR 3
+#define HOSTAP_CRYPT_ERR_CRYPT_INIT_FAILED 4
+#define HOSTAP_CRYPT_ERR_KEY_SET_FAILED 5
+#define HOSTAP_CRYPT_ERR_TX_KEY_SET_FAILED 6
+#define HOSTAP_CRYPT_ERR_CARD_CONF_FAILED 7
+
+#define HOSTAP_HW_FLAG_NULLFUNC_OK BIT(0)
+
+enum {
+       IEEE80211_KEY_MGMT_NONE = 0,
+       IEEE80211_KEY_MGMT_IEEE8021X = 1,
+       IEEE80211_KEY_MGMT_WPA_PSK = 2,
+       IEEE80211_KEY_MGMT_WPA_EAP = 3,
+};
+
+
+/* Data structures used for get_hw_features ioctl */
+struct hostapd_ioctl_hw_modes_hdr {
+       int mode;
+       int num_channels;
+       int num_rates;
+};
+
+struct ieee80211_channel_data {
+       short chan; /* channel number (IEEE 802.11) */
+       short freq; /* frequency in MHz */
+       int flag; /* flag for hostapd use (IEEE80211_CHAN_*) */
+};
+
+struct ieee80211_rate_data {
+       int rate; /* rate in 100 kbps */
+       int flags; /* IEEE80211_RATE_ flags */
+};
+
+
+/* ADD_IF, REMOVE_IF, and UPDATE_IF 'type' argument */
+enum {
+       HOSTAP_IF_WDS = 1, HOSTAP_IF_VLAN = 2, HOSTAP_IF_BSS = 3,
+       HOSTAP_IF_STA = 4
+};
+
+struct hostapd_if_wds {
+       u8 remote_addr[ETH_ALEN];
+};
+
+struct hostapd_if_vlan {
+       u8 id;
+};
+
+struct hostapd_if_bss {
+       u8 bssid[ETH_ALEN];
+};
+
+struct hostapd_if_sta {
+};
+
+#endif /* HOSTAPD_IOCTL_H */
diff --git a/package/mac80211/src/mac80211/ieee80211.c b/package/mac80211/src/mac80211/ieee80211.c
new file mode 100644 (file)
index 0000000..e903197
--- /dev/null
@@ -0,0 +1,5132 @@
+/*
+ * Copyright 2002-2005, Instant802 Networks, Inc.
+ * Copyright 2005-2006, Devicescape Software, Inc.
+ * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <net/mac80211.h>
+#include <net/ieee80211_radiotap.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/netdevice.h>
+#include <linux/types.h>
+#include <linux/slab.h>
+#include <linux/skbuff.h>
+#include <linux/etherdevice.h>
+#include <linux/if_arp.h>
+#include <linux/wireless.h>
+#include <linux/rtnetlink.h>
+#include <net/iw_handler.h>
+#include <linux/compiler.h>
+#include <linux/bitmap.h>
+#include <net/cfg80211.h>
+
+#include "ieee80211_common.h"
+#include "ieee80211_i.h"
+#include "ieee80211_rate.h"
+#include "wep.h"
+#include "wpa.h"
+#include "tkip.h"
+#include "wme.h"
+#include "aes_ccm.h"
+#include "ieee80211_led.h"
+#include "ieee80211_cfg.h"
+#include "debugfs.h"
+#include "debugfs_netdev.h"
+#include "debugfs_key.h"
+
+/* privid for wiphys to determine whether they belong to us or not */
+void *mac80211_wiphy_privid = &mac80211_wiphy_privid;
+
+/* See IEEE 802.1H for LLC/SNAP encapsulation/decapsulation */
+/* Ethernet-II snap header (RFC1042 for most EtherTypes) */
+static const unsigned char rfc1042_header[] =
+       { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
+
+/* Bridge-Tunnel header (for EtherTypes ETH_P_AARP and ETH_P_IPX) */
+static const unsigned char bridge_tunnel_header[] =
+       { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8 };
+
+/* No encapsulation header if EtherType < 0x600 (=length) */
+static const unsigned char eapol_header[] =
+       { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00, 0x88, 0x8e };
+
+
+static inline void ieee80211_include_sequence(struct ieee80211_sub_if_data *sdata,
+                                             struct ieee80211_hdr *hdr)
+{
+       /* Set the sequence number for this frame. */
+       hdr->seq_ctrl = cpu_to_le16(sdata->sequence);
+
+       /* Increase the sequence number. */
+       sdata->sequence = (sdata->sequence + 0x10) & IEEE80211_SCTL_SEQ;
+}
+
+struct ieee80211_key_conf *
+ieee80211_key_data2conf(struct ieee80211_local *local,
+                       const struct ieee80211_key *data)
+{
+       struct ieee80211_key_conf *conf;
+
+       conf = kmalloc(sizeof(*conf) + data->keylen, GFP_ATOMIC);
+       if (!conf)
+               return NULL;
+
+       conf->hw_key_idx = data->hw_key_idx;
+       conf->alg = data->alg;
+       conf->keylen = data->keylen;
+       conf->flags = 0;
+       if (data->force_sw_encrypt)
+               conf->flags |= IEEE80211_KEY_FORCE_SW_ENCRYPT;
+       conf->keyidx = data->keyidx;
+       if (data->default_tx_key)
+               conf->flags |= IEEE80211_KEY_DEFAULT_TX_KEY;
+       if (local->default_wep_only)
+               conf->flags |= IEEE80211_KEY_DEFAULT_WEP_ONLY;
+       memcpy(conf->key, data->key, data->keylen);
+
+       return conf;
+}
+
+struct ieee80211_key *ieee80211_key_alloc(struct ieee80211_sub_if_data *sdata,
+                                         int idx, size_t key_len, gfp_t flags)
+{
+       struct ieee80211_key *key;
+
+       key = kzalloc(sizeof(struct ieee80211_key) + key_len, flags);
+       if (!key)
+               return NULL;
+       kref_init(&key->kref);
+       return key;
+}
+
+static void ieee80211_key_release(struct kref *kref)
+{
+       struct ieee80211_key *key;
+
+       key = container_of(kref, struct ieee80211_key, kref);
+       if (key->alg == ALG_CCMP)
+               ieee80211_aes_key_free(key->u.ccmp.tfm);
+       ieee80211_debugfs_key_remove(key);
+       kfree(key);
+}
+
+void ieee80211_key_free(struct ieee80211_key *key)
+{
+       if (key)
+               kref_put(&key->kref, ieee80211_key_release);
+}
+
+static int rate_list_match(const int *rate_list, int rate)
+{
+       int i;
+
+       if (!rate_list)
+               return 0;
+
+       for (i = 0; rate_list[i] >= 0; i++)
+               if (rate_list[i] == rate)
+                       return 1;
+
+       return 0;
+}
+
+
+void ieee80211_prepare_rates(struct ieee80211_local *local,
+                            struct ieee80211_hw_mode *mode)
+{
+       int i;
+
+       for (i = 0; i < mode->num_rates; i++) {
+               struct ieee80211_rate *rate = &mode->rates[i];
+
+               rate->flags &= ~(IEEE80211_RATE_SUPPORTED |
+                                IEEE80211_RATE_BASIC);
+
+               if (local->supp_rates[mode->mode]) {
+                       if (!rate_list_match(local->supp_rates[mode->mode],
+                                            rate->rate))
+                               continue;
+               }
+
+               rate->flags |= IEEE80211_RATE_SUPPORTED;
+
+               /* Use configured basic rate set if it is available. If not,
+                * use defaults that are sane for most cases. */
+               if (local->basic_rates[mode->mode]) {
+                       if (rate_list_match(local->basic_rates[mode->mode],
+                                           rate->rate))
+                               rate->flags |= IEEE80211_RATE_BASIC;
+               } else switch (mode->mode) {
+               case MODE_IEEE80211A:
+                       if (rate->rate == 60 || rate->rate == 120 ||
+                           rate->rate == 240)
+                               rate->flags |= IEEE80211_RATE_BASIC;
+                       break;
+               case MODE_IEEE80211B:
+                       if (rate->rate == 10 || rate->rate == 20)
+                               rate->flags |= IEEE80211_RATE_BASIC;
+                       break;
+               case MODE_ATHEROS_TURBO:
+                       if (rate->rate == 120 || rate->rate == 240 ||
+                           rate->rate == 480)
+                               rate->flags |= IEEE80211_RATE_BASIC;
+                       break;
+               case MODE_IEEE80211G:
+                       if (rate->rate == 10 || rate->rate == 20 ||
+                           rate->rate == 55 || rate->rate == 110)
+                               rate->flags |= IEEE80211_RATE_BASIC;
+                       break;
+               }
+
+               /* Set ERP and MANDATORY flags based on phymode */
+               switch (mode->mode) {
+               case MODE_IEEE80211A:
+                       if (rate->rate == 60 || rate->rate == 120 ||
+                           rate->rate == 240)
+                               rate->flags |= IEEE80211_RATE_MANDATORY;
+                       break;
+               case MODE_IEEE80211B:
+                       if (rate->rate == 10)
+                               rate->flags |= IEEE80211_RATE_MANDATORY;
+                       break;
+               case MODE_ATHEROS_TURBO:
+                       break;
+               case MODE_IEEE80211G:
+                       if (rate->rate == 10 || rate->rate == 20 ||
+                           rate->rate == 55 || rate->rate == 110 ||
+                           rate->rate == 60 || rate->rate == 120 ||
+                           rate->rate == 240)
+                               rate->flags |= IEEE80211_RATE_MANDATORY;
+                       break;
+               }
+               if (ieee80211_is_erp_rate(mode->mode, rate->rate))
+                       rate->flags |= IEEE80211_RATE_ERP;
+       }
+}
+
+
+static void ieee80211_key_threshold_notify(struct net_device *dev,
+                                          struct ieee80211_key *key,
+                                          struct sta_info *sta)
+{
+       struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+       struct sk_buff *skb;
+       struct ieee80211_msg_key_notification *msg;
+
+       /* if no one will get it anyway, don't even allocate it.
+        * unlikely because this is only relevant for APs
+        * where the device must be open... */
+       if (unlikely(!local->apdev))
+               return;
+
+       skb = dev_alloc_skb(sizeof(struct ieee80211_frame_info) +
+                           sizeof(struct ieee80211_msg_key_notification));
+       if (!skb)
+               return;
+
+       skb_reserve(skb, sizeof(struct ieee80211_frame_info));
+       msg = (struct ieee80211_msg_key_notification *)
+               skb_put(skb, sizeof(struct ieee80211_msg_key_notification));
+       msg->tx_rx_count = key->tx_rx_count;
+       memcpy(msg->ifname, dev->name, IFNAMSIZ);
+       if (sta)
+               memcpy(msg->addr, sta->addr, ETH_ALEN);
+       else
+               memset(msg->addr, 0xff, ETH_ALEN);
+
+       key->tx_rx_count = 0;
+
+       ieee80211_rx_mgmt(local, skb, NULL,
+                         ieee80211_msg_key_threshold_notification);
+}
+
+
+static u8 * ieee80211_get_bssid(struct ieee80211_hdr *hdr, size_t len)
+{
+       u16 fc;
+
+       if (len < 24)
+               return NULL;
+
+       fc = le16_to_cpu(hdr->frame_control);
+
+       switch (fc & IEEE80211_FCTL_FTYPE) {
+       case IEEE80211_FTYPE_DATA:
+               switch (fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) {
+               case IEEE80211_FCTL_TODS:
+                       return hdr->addr1;
+               case (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS):
+                       return NULL;
+               case IEEE80211_FCTL_FROMDS:
+                       return hdr->addr2;
+               case 0:
+                       return hdr->addr3;
+               }
+               break;
+       case IEEE80211_FTYPE_MGMT:
+               return hdr->addr3;
+       case IEEE80211_FTYPE_CTL:
+               if ((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_PSPOLL)
+                       return hdr->addr1;
+               else
+                       return NULL;
+       }
+
+       return NULL;
+}
+
+int ieee80211_get_hdrlen(u16 fc)
+{
+       int hdrlen = 24;
+
+       switch (fc & IEEE80211_FCTL_FTYPE) {
+       case IEEE80211_FTYPE_DATA:
+               if ((fc & IEEE80211_FCTL_FROMDS) && (fc & IEEE80211_FCTL_TODS))
+                       hdrlen = 30; /* Addr4 */
+               /*
+                * The QoS Control field is two bytes and its presence is
+                * indicated by the IEEE80211_STYPE_QOS_DATA bit. Add 2 to
+                * hdrlen if that bit is set.
+                * This works by masking out the bit and shifting it to
+                * bit position 1 so the result has the value 0 or 2.
+                */
+               hdrlen += (fc & IEEE80211_STYPE_QOS_DATA)
+                               >> (ilog2(IEEE80211_STYPE_QOS_DATA)-1);
+               break;
+       case IEEE80211_FTYPE_CTL:
+               /*
+                * ACK and CTS are 10 bytes, all others 16. To see how
+                * to get this condition consider
+                *   subtype mask:   0b0000000011110000 (0x00F0)
+                *   ACK subtype:    0b0000000011010000 (0x00D0)
+                *   CTS subtype:    0b0000000011000000 (0x00C0)
+                *   bits that matter:         ^^^      (0x00E0)
+                *   value of those: 0b0000000011000000 (0x00C0)
+                */
+               if ((fc & 0xE0) == 0xC0)
+                       hdrlen = 10;
+               else
+                       hdrlen = 16;
+               break;
+       }
+
+       return hdrlen;
+}
+EXPORT_SYMBOL(ieee80211_get_hdrlen);
+
+int ieee80211_get_hdrlen_from_skb(const struct sk_buff *skb)
+{
+       const struct ieee80211_hdr *hdr = (const struct ieee80211_hdr *) skb->data;
+       int hdrlen;
+
+       if (unlikely(skb->len < 10))
+               return 0;
+       hdrlen = ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_control));
+       if (unlikely(hdrlen > skb->len))
+               return 0;
+       return hdrlen;
+}
+EXPORT_SYMBOL(ieee80211_get_hdrlen_from_skb);
+
+static int ieee80211_get_radiotap_len(struct sk_buff *skb)
+{
+       struct ieee80211_radiotap_header *hdr =
+               (struct ieee80211_radiotap_header *) skb->data;
+
+       return le16_to_cpu(hdr->it_len);
+}
+
+#ifdef CONFIG_MAC80211_LOWTX_FRAME_DUMP
+static void ieee80211_dump_frame(const char *ifname, const char *title,
+                                const struct sk_buff *skb)
+{
+       const struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+       u16 fc;
+       int hdrlen;
+
+       printk(KERN_DEBUG "%s: %s (len=%d)", ifname, title, skb->len);
+       if (skb->len < 4) {
+               printk("\n");
+               return;
+       }
+
+       fc = le16_to_cpu(hdr->frame_control);
+       hdrlen = ieee80211_get_hdrlen(fc);
+       if (hdrlen > skb->len)
+               hdrlen = skb->len;
+       if (hdrlen >= 4)
+               printk(" FC=0x%04x DUR=0x%04x",
+                      fc, le16_to_cpu(hdr->duration_id));
+       if (hdrlen >= 10)
+               printk(" A1=" MAC_FMT, MAC_ARG(hdr->addr1));
+       if (hdrlen >= 16)
+               printk(" A2=" MAC_FMT, MAC_ARG(hdr->addr2));
+       if (hdrlen >= 24)
+               printk(" A3=" MAC_FMT, MAC_ARG(hdr->addr3));
+       if (hdrlen >= 30)
+               printk(" A4=" MAC_FMT, MAC_ARG(hdr->addr4));
+       printk("\n");
+}
+#else /* CONFIG_MAC80211_LOWTX_FRAME_DUMP */
+static inline void ieee80211_dump_frame(const char *ifname, const char *title,
+                                       struct sk_buff *skb)
+{
+}
+#endif /* CONFIG_MAC80211_LOWTX_FRAME_DUMP */
+
+
+static int ieee80211_is_eapol(const struct sk_buff *skb)
+{
+       const struct ieee80211_hdr *hdr;
+       u16 fc;
+       int hdrlen;
+
+       if (unlikely(skb->len < 10))
+               return 0;
+
+       hdr = (const struct ieee80211_hdr *) skb->data;
+       fc = le16_to_cpu(hdr->frame_control);
+
+       if (unlikely(!WLAN_FC_DATA_PRESENT(fc)))
+               return 0;
+
+       hdrlen = ieee80211_get_hdrlen(fc);
+
+       if (unlikely(skb->len >= hdrlen + sizeof(eapol_header) &&
+                    memcmp(skb->data + hdrlen, eapol_header,
+                           sizeof(eapol_header)) == 0))
+               return 1;
+
+       return 0;
+}
+
+
+static ieee80211_txrx_result
+ieee80211_tx_h_rate_ctrl(struct ieee80211_txrx_data *tx)
+{
+       struct rate_control_extra extra;
+
+       memset(&extra, 0, sizeof(extra));
+       extra.mode = tx->u.tx.mode;
+       extra.mgmt_data = tx->sdata &&
+               tx->sdata->type == IEEE80211_IF_TYPE_MGMT;
+       extra.ethertype = tx->ethertype;
+
+       tx->u.tx.rate = rate_control_get_rate(tx->local, tx->dev, tx->skb,
+                                             &extra);
+       if (unlikely(extra.probe != NULL)) {
+               tx->u.tx.control->flags |= IEEE80211_TXCTL_RATE_CTRL_PROBE;
+               tx->u.tx.probe_last_frag = 1;
+               tx->u.tx.control->alt_retry_rate = tx->u.tx.rate->val;
+               tx->u.tx.rate = extra.probe;
+       } else {
+               tx->u.tx.control->alt_retry_rate = -1;
+       }
+       if (!tx->u.tx.rate)
+               return TXRX_DROP;
+       if (tx->u.tx.mode->mode == MODE_IEEE80211G &&
+           tx->local->cts_protect_erp_frames && tx->fragmented &&
+           extra.nonerp) {
+               tx->u.tx.last_frag_rate = tx->u.tx.rate;
+               tx->u.tx.probe_last_frag = extra.probe ? 1 : 0;
+
+               tx->u.tx.rate = extra.nonerp;
+               tx->u.tx.control->rate = extra.nonerp;
+               tx->u.tx.control->flags &= ~IEEE80211_TXCTL_RATE_CTRL_PROBE;
+       } else {
+               tx->u.tx.last_frag_rate = tx->u.tx.rate;
+               tx->u.tx.control->rate = tx->u.tx.rate;
+       }
+       tx->u.tx.control->tx_rate = tx->u.tx.rate->val;
+       if ((tx->u.tx.rate->flags & IEEE80211_RATE_PREAMBLE2) &&
+           tx->local->short_preamble &&
+           (!tx->sta || (tx->sta->flags & WLAN_STA_SHORT_PREAMBLE))) {
+               tx->u.tx.short_preamble = 1;
+               tx->u.tx.control->tx_rate = tx->u.tx.rate->val2;
+       }
+
+       return TXRX_CONTINUE;
+}
+
+
+static ieee80211_txrx_result
+ieee80211_tx_h_select_key(struct ieee80211_txrx_data *tx)
+{
+       if (tx->sta)
+               tx->u.tx.control->key_idx = tx->sta->key_idx_compression;
+       else
+               tx->u.tx.control->key_idx = HW_KEY_IDX_INVALID;
+
+       if (unlikely(tx->u.tx.control->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT))
+               tx->key = NULL;
+       else if (tx->sta && tx->sta->key)
+               tx->key = tx->sta->key;
+       else if (tx->sdata->default_key)
+               tx->key = tx->sdata->default_key;
+       else if (tx->sdata->drop_unencrypted &&
+                !(tx->sdata->eapol && ieee80211_is_eapol(tx->skb))) {
+               I802_DEBUG_INC(tx->local->tx_handlers_drop_unencrypted);
+               return TXRX_DROP;
+       } else
+               tx->key = NULL;
+
+       if (tx->key) {
+               tx->key->tx_rx_count++;
+               if (unlikely(tx->local->key_tx_rx_threshold &&
+                            tx->key->tx_rx_count >
+                            tx->local->key_tx_rx_threshold)) {
+                       ieee80211_key_threshold_notify(tx->dev, tx->key,
+                                                      tx->sta);
+               }
+       }
+
+       return TXRX_CONTINUE;
+}
+
+
+static ieee80211_txrx_result
+ieee80211_tx_h_fragment(struct ieee80211_txrx_data *tx)
+{
+       struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) tx->skb->data;
+       size_t hdrlen, per_fragm, num_fragm, payload_len, left;
+       struct sk_buff **frags, *first, *frag;
+       int i;
+       u16 seq;
+       u8 *pos;
+       int frag_threshold = tx->local->fragmentation_threshold;
+
+       if (!tx->fragmented)
+               return TXRX_CONTINUE;
+
+       first = tx->skb;
+
+       hdrlen = ieee80211_get_hdrlen(tx->fc);
+       payload_len = first->len - hdrlen;
+       per_fragm = frag_threshold - hdrlen - FCS_LEN;
+       num_fragm = (payload_len + per_fragm - 1) / per_fragm;
+
+       frags = kzalloc(num_fragm * sizeof(struct sk_buff *), GFP_ATOMIC);
+       if (!frags)
+               goto fail;
+
+       hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_MOREFRAGS);
+       seq = le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_SEQ;
+       pos = first->data + hdrlen + per_fragm;
+       left = payload_len - per_fragm;
+       for (i = 0; i < num_fragm - 1; i++) {
+               struct ieee80211_hdr *fhdr;
+               size_t copylen;
+
+               if (left <= 0)
+                       goto fail;
+
+               /* reserve enough extra head and tail room for possible
+                * encryption */
+               frag = frags[i] =
+                       dev_alloc_skb(tx->local->hw.extra_tx_headroom +
+                                     frag_threshold +
+                                     IEEE80211_ENCRYPT_HEADROOM +
+                                     IEEE80211_ENCRYPT_TAILROOM);
+               if (!frag)
+                       goto fail;
+               /* Make sure that all fragments use the same priority so
+                * that they end up using the same TX queue */
+               frag->priority = first->priority;
+               skb_reserve(frag, tx->local->hw.extra_tx_headroom +
+                       IEEE80211_ENCRYPT_HEADROOM);
+               fhdr = (struct ieee80211_hdr *) skb_put(frag, hdrlen);
+               memcpy(fhdr, first->data, hdrlen);
+               if (i == num_fragm - 2)
+                       fhdr->frame_control &= cpu_to_le16(~IEEE80211_FCTL_MOREFRAGS);
+               fhdr->seq_ctrl = cpu_to_le16(seq | ((i + 1) & IEEE80211_SCTL_FRAG));
+               copylen = left > per_fragm ? per_fragm : left;
+               memcpy(skb_put(frag, copylen), pos, copylen);
+
+               pos += copylen;
+               left -= copylen;
+       }
+       skb_trim(first, hdrlen + per_fragm);
+
+       tx->u.tx.num_extra_frag = num_fragm - 1;
+       tx->u.tx.extra_frag = frags;
+
+       return TXRX_CONTINUE;
+
+ fail:
+       printk(KERN_DEBUG "%s: failed to fragment frame\n", tx->dev->name);
+       if (frags) {
+               for (i = 0; i < num_fragm - 1; i++)
+                       if (frags[i])
+                               dev_kfree_skb(frags[i]);
+               kfree(frags);
+       }
+       I802_DEBUG_INC(tx->local->tx_handlers_drop_fragment);
+       return TXRX_DROP;
+}
+
+
+static int wep_encrypt_skb(struct ieee80211_txrx_data *tx, struct sk_buff *skb)
+{
+       if (tx->key->force_sw_encrypt) {
+               if (ieee80211_wep_encrypt(tx->local, skb, tx->key))
+                       return -1;
+       } else {
+               tx->u.tx.control->key_idx = tx->key->hw_key_idx;
+               if (tx->local->hw.flags & IEEE80211_HW_WEP_INCLUDE_IV) {
+                       if (ieee80211_wep_add_iv(tx->local, skb, tx->key) ==
+                           NULL)
+                               return -1;
+               }
+       }
+       return 0;
+}
+
+
+void ieee80211_tx_set_iswep(struct ieee80211_txrx_data *tx)
+{
+       struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) tx->skb->data;
+
+       hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
+       if (tx->u.tx.extra_frag) {
+               struct ieee80211_hdr *fhdr;
+               int i;
+               for (i = 0; i < tx->u.tx.num_extra_frag; i++) {
+                       fhdr = (struct ieee80211_hdr *)
+                               tx->u.tx.extra_frag[i]->data;
+                       fhdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PROTECTED);
+               }
+       }
+}
+
+
+static ieee80211_txrx_result
+ieee80211_tx_h_wep_encrypt(struct ieee80211_txrx_data *tx)
+{
+       struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) tx->skb->data;
+       u16 fc;
+
+       fc = le16_to_cpu(hdr->frame_control);
+
+       if (!tx->key || tx->key->alg != ALG_WEP ||
+           ((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA &&
+            ((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_MGMT ||
+             (fc & IEEE80211_FCTL_STYPE) != IEEE80211_STYPE_AUTH)))
+               return TXRX_CONTINUE;
+
+       tx->u.tx.control->iv_len = WEP_IV_LEN;
+       tx->u.tx.control->icv_len = WEP_ICV_LEN;
+       ieee80211_tx_set_iswep(tx);
+
+       if (wep_encrypt_skb(tx, tx->skb) < 0) {
+               I802_DEBUG_INC(tx->local->tx_handlers_drop_wep);
+               return TXRX_DROP;
+       }
+
+       if (tx->u.tx.extra_frag) {
+               int i;
+               for (i = 0; i < tx->u.tx.num_extra_frag; i++) {
+                       if (wep_encrypt_skb(tx, tx->u.tx.extra_frag[i]) < 0) {
+                               I802_DEBUG_INC(tx->local->
+                                              tx_handlers_drop_wep);
+                               return TXRX_DROP;
+                       }
+               }
+       }
+
+       return TXRX_CONTINUE;
+}
+
+
+static int ieee80211_frame_duration(struct ieee80211_local *local, size_t len,
+                                   int rate, int erp, int short_preamble)
+{
+       int dur;
+
+       /* calculate duration (in microseconds, rounded up to next higher
+        * integer if it includes a fractional microsecond) to send frame of
+        * len bytes (does not include FCS) at the given rate. Duration will
+        * also include SIFS.
+        *
+        * rate is in 100 kbps, so divident is multiplied by 10 in the
+        * DIV_ROUND_UP() operations.
+        */
+
+       if (local->hw.conf.phymode == MODE_IEEE80211A || erp ||
+           local->hw.conf.phymode == MODE_ATHEROS_TURBO) {
+               /*
+                * OFDM:
+                *
+                * N_DBPS = DATARATE x 4
+                * N_SYM = Ceiling((16+8xLENGTH+6) / N_DBPS)
+                *      (16 = SIGNAL time, 6 = tail bits)
+                * TXTIME = T_PREAMBLE + T_SIGNAL + T_SYM x N_SYM + Signal Ext
+                *
+                * T_SYM = 4 usec
+                * 802.11a - 17.5.2: aSIFSTime = 16 usec
+                * 802.11g - 19.8.4: aSIFSTime = 10 usec +
+                *      signal ext = 6 usec
+                */
+               /* FIX: Atheros Turbo may have different (shorter) duration? */
+               dur = 16; /* SIFS + signal ext */
+               dur += 16; /* 17.3.2.3: T_PREAMBLE = 16 usec */
+               dur += 4; /* 17.3.2.3: T_SIGNAL = 4 usec */
+               dur += 4 * DIV_ROUND_UP((16 + 8 * (len + 4) + 6) * 10,
+                                       4 * rate); /* T_SYM x N_SYM */
+       } else {
+               /*
+                * 802.11b or 802.11g with 802.11b compatibility:
+                * 18.3.4: TXTIME = PreambleLength + PLCPHeaderTime +
+                * Ceiling(((LENGTH+PBCC)x8)/DATARATE). PBCC=0.
+                *
+                * 802.11 (DS): 15.3.3, 802.11b: 18.3.4
+                * aSIFSTime = 10 usec
+                * aPreambleLength = 144 usec or 72 usec with short preamble
+                * aPLCPHeaderLength = 48 usec or 24 usec with short preamble
+                */
+               dur = 10; /* aSIFSTime = 10 usec */
+               dur += short_preamble ? (72 + 24) : (144 + 48);
+
+               dur += DIV_ROUND_UP(8 * (len + 4) * 10, rate);
+       }
+
+       return dur;
+}
+
+
+/* Exported duration function for driver use */
+__le16 ieee80211_generic_frame_duration(struct ieee80211_hw *hw,
+                                       size_t frame_len, int rate)
+{
+       struct ieee80211_local *local = hw_to_local(hw);
+       u16 dur;
+       int erp;
+
+       erp = ieee80211_is_erp_rate(hw->conf.phymode, rate);
+       dur = ieee80211_frame_duration(local, frame_len, rate,
+                                      erp, local->short_preamble);
+
+       return cpu_to_le16(dur);
+}
+EXPORT_SYMBOL(ieee80211_generic_frame_duration);
+
+
+static u16 ieee80211_duration(struct ieee80211_txrx_data *tx, int group_addr,
+                             int next_frag_len)
+{
+       int rate, mrate, erp, dur, i;
+       struct ieee80211_rate *txrate = tx->u.tx.rate;
+       struct ieee80211_local *local = tx->local;
+       struct ieee80211_hw_mode *mode = tx->u.tx.mode;
+
+       erp = txrate->flags & IEEE80211_RATE_ERP;
+
+       /*
+        * data and mgmt (except PS Poll):
+        * - during CFP: 32768
+        * - during contention period:
+        *   if addr1 is group address: 0
+        *   if more fragments = 0 and addr1 is individual address: time to
+        *      transmit one ACK plus SIFS
+        *   if more fragments = 1 and addr1 is individual address: time to
+        *      transmit next fragment plus 2 x ACK plus 3 x SIFS
+        *
+        * IEEE 802.11, 9.6:
+        * - control response frame (CTS or ACK) shall be transmitted using the
+        *   same rate as the immediately previous frame in the frame exchange
+        *   sequence, if this rate belongs to the PHY mandatory rates, or else
+        *   at the highest possible rate belonging to the PHY rates in the
+        *   BSSBasicRateSet
+        */
+
+       if ((tx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_CTL) {
+               /* TODO: These control frames are not currently sent by
+                * 80211.o, but should they be implemented, this function
+                * needs to be updated to support duration field calculation.
+                *
+                * RTS: time needed to transmit pending data/mgmt frame plus
+                *    one CTS frame plus one ACK frame plus 3 x SIFS
+                * CTS: duration of immediately previous RTS minus time
+                *    required to transmit CTS and its SIFS
+                * ACK: 0 if immediately previous directed data/mgmt had
+                *    more=0, with more=1 duration in ACK frame is duration
+                *    from previous frame minus time needed to transmit ACK
+                *    and its SIFS
+                * PS Poll: BIT(15) | BIT(14) | aid
+                */
+               return 0;
+       }
+
+       /* data/mgmt */
+       if (0 /* FIX: data/mgmt during CFP */)
+               return 32768;
+
+       if (group_addr) /* Group address as the destination - no ACK */
+               return 0;
+
+       /* Individual destination address:
+        * IEEE 802.11, Ch. 9.6 (after IEEE 802.11g changes)
+        * CTS and ACK frames shall be transmitted using the highest rate in
+        * basic rate set that is less than or equal to the rate of the
+        * immediately previous frame and that is using the same modulation
+        * (CCK or OFDM). If no basic rate set matches with these requirements,
+        * the highest mandatory rate of the PHY that is less than or equal to
+        * the rate of the previous frame is used.
+        * Mandatory rates for IEEE 802.11g PHY: 1, 2, 5.5, 11, 6, 12, 24 Mbps
+        */
+       rate = -1;
+       mrate = 10; /* use 1 Mbps if everything fails */
+       for (i = 0; i < mode->num_rates; i++) {
+               struct ieee80211_rate *r = &mode->rates[i];
+               if (r->rate > txrate->rate)
+                       break;
+
+               if (IEEE80211_RATE_MODULATION(txrate->flags) !=
+                   IEEE80211_RATE_MODULATION(r->flags))
+                       continue;
+
+               if (r->flags & IEEE80211_RATE_BASIC)
+                       rate = r->rate;
+               else if (r->flags & IEEE80211_RATE_MANDATORY)
+                       mrate = r->rate;
+       }
+       if (rate == -1) {
+               /* No matching basic rate found; use highest suitable mandatory
+                * PHY rate */
+               rate = mrate;
+       }
+
+       /* Time needed to transmit ACK
+        * (10 bytes + 4-byte FCS = 112 bits) plus SIFS; rounded up
+        * to closest integer */
+
+       dur = ieee80211_frame_duration(local, 10, rate, erp,
+                                      local->short_preamble);
+
+       if (next_frag_len) {
+               /* Frame is fragmented: duration increases with time needed to
+                * transmit next fragment plus ACK and 2 x SIFS. */
+               dur *= 2; /* ACK + SIFS */
+               /* next fragment */
+               dur += ieee80211_frame_duration(local, next_frag_len,
+                                               txrate->rate, erp,
+                                               local->short_preamble);
+       }
+
+       return dur;
+}
+
+
+static ieee80211_txrx_result
+ieee80211_tx_h_misc(struct ieee80211_txrx_data *tx)
+{
+       struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) tx->skb->data;
+       u16 dur;
+       struct ieee80211_tx_control *control = tx->u.tx.control;
+       struct ieee80211_hw_mode *mode = tx->u.tx.mode;
+
+       if (!is_multicast_ether_addr(hdr->addr1)) {
+               if (tx->skb->len + FCS_LEN > tx->local->rts_threshold &&
+                   tx->local->rts_threshold < IEEE80211_MAX_RTS_THRESHOLD) {
+                       control->flags |= IEEE80211_TXCTL_USE_RTS_CTS;
+                       control->retry_limit =
+                               tx->local->long_retry_limit;
+               } else {
+                       control->retry_limit =
+                               tx->local->short_retry_limit;
+               }
+       } else {
+               control->retry_limit = 1;
+       }
+
+       if (tx->fragmented) {
+               /* Do not use multiple retry rates when sending fragmented
+                * frames.
+                * TODO: The last fragment could still use multiple retry
+                * rates. */
+               control->alt_retry_rate = -1;
+       }
+
+       /* Use CTS protection for unicast frames sent using extended rates if
+        * there are associated non-ERP stations and RTS/CTS is not configured
+        * for the frame. */
+       if (mode->mode == MODE_IEEE80211G &&
+           (tx->u.tx.rate->flags & IEEE80211_RATE_ERP) &&
+           tx->u.tx.unicast &&
+           tx->local->cts_protect_erp_frames &&
+           !(control->flags & IEEE80211_TXCTL_USE_RTS_CTS))
+               control->flags |= IEEE80211_TXCTL_USE_CTS_PROTECT;
+
+       /* Setup duration field for the first fragment of the frame. Duration
+        * for remaining fragments will be updated when they are being sent
+        * to low-level driver in ieee80211_tx(). */
+       dur = ieee80211_duration(tx, is_multicast_ether_addr(hdr->addr1),
+                                tx->fragmented ? tx->u.tx.extra_frag[0]->len :
+                                0);
+       hdr->duration_id = cpu_to_le16(dur);
+
+       if ((control->flags & IEEE80211_TXCTL_USE_RTS_CTS) ||
+           (control->flags & IEEE80211_TXCTL_USE_CTS_PROTECT)) {
+               struct ieee80211_rate *rate;
+
+               /* Do not use multiple retry rates when using RTS/CTS */
+               control->alt_retry_rate = -1;
+
+               /* Use min(data rate, max base rate) as CTS/RTS rate */
+               rate = tx->u.tx.rate;
+               while (rate > mode->rates &&
+                      !(rate->flags & IEEE80211_RATE_BASIC))
+                       rate--;
+
+               control->rts_cts_rate = rate->val;
+               control->rts_rate = rate;
+       }
+
+       if (tx->sta) {
+               tx->sta->tx_packets++;
+               tx->sta->tx_fragments++;
+               tx->sta->tx_bytes += tx->skb->len;
+               if (tx->u.tx.extra_frag) {
+                       int i;
+                       tx->sta->tx_fragments += tx->u.tx.num_extra_frag;
+                       for (i = 0; i < tx->u.tx.num_extra_frag; i++) {
+                               tx->sta->tx_bytes +=
+                                       tx->u.tx.extra_frag[i]->len;
+                       }
+               }
+       }
+
+       return TXRX_CONTINUE;
+}
+
+
+static ieee80211_txrx_result
+ieee80211_tx_h_check_assoc(struct ieee80211_txrx_data *tx)
+{
+#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
+       struct sk_buff *skb = tx->skb;
+       struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
+       u32 sta_flags;
+
+       if (unlikely(tx->local->sta_scanning != 0) &&
+           ((tx->fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_MGMT ||
+            (tx->fc & IEEE80211_FCTL_STYPE) != IEEE80211_STYPE_PROBE_REQ))
+               return TXRX_DROP;
+
+       if (tx->u.tx.ps_buffered)
+               return TXRX_CONTINUE;
+
+       sta_flags = tx->sta ? tx->sta->flags : 0;
+
+       if (likely(tx->u.tx.unicast)) {
+               if (unlikely(!(sta_flags & WLAN_STA_ASSOC) &&
+                            tx->sdata->type != IEEE80211_IF_TYPE_IBSS &&
+                            (tx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA)) {
+#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
+                       printk(KERN_DEBUG "%s: dropped data frame to not "
+                              "associated station " MAC_FMT "\n",
+                              tx->dev->name, MAC_ARG(hdr->addr1));
+#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
+                       I802_DEBUG_INC(tx->local->tx_handlers_drop_not_assoc);
+                       return TXRX_DROP;
+               }
+       } else {
+               if (unlikely((tx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA &&
+                            tx->local->num_sta == 0 &&
+                            !tx->local->allow_broadcast_always &&
+                            tx->sdata->type != IEEE80211_IF_TYPE_IBSS)) {
+                       /*
+                        * No associated STAs - no need to send multicast
+                        * frames.
+                        */
+                       return TXRX_DROP;
+               }
+               return TXRX_CONTINUE;
+       }
+
+       if (unlikely(!tx->u.tx.mgmt_interface && tx->sdata->ieee802_1x &&
+                    !(sta_flags & WLAN_STA_AUTHORIZED))) {
+#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
+               printk(KERN_DEBUG "%s: dropped frame to " MAC_FMT
+                      " (unauthorized port)\n", tx->dev->name,
+                      MAC_ARG(hdr->addr1));
+#endif
+               I802_DEBUG_INC(tx->local->tx_handlers_drop_unauth_port);
+               return TXRX_DROP;
+       }
+
+       return TXRX_CONTINUE;
+}
+
+static ieee80211_txrx_result
+ieee80211_tx_h_sequence(struct ieee80211_txrx_data *tx)
+{
+       struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)tx->skb->data;
+
+       if (ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_control)) >= 24)
+               ieee80211_include_sequence(tx->sdata, hdr);
+
+       return TXRX_CONTINUE;
+}
+
+/* This function is called whenever the AP is about to exceed the maximum limit
+ * of buffered frames for power saving STAs. This situation should not really
+ * happen often during normal operation, so dropping the oldest buffered packet
+ * from each queue should be OK to make some room for new frames. */
+static void purge_old_ps_buffers(struct ieee80211_local *local)
+{
+       int total = 0, purged = 0;
+       struct sk_buff *skb;
+       struct ieee80211_sub_if_data *sdata;
+       struct sta_info *sta;
+
+       read_lock(&local->sub_if_lock);
+       list_for_each_entry(sdata, &local->sub_if_list, list) {
+               struct ieee80211_if_ap *ap;
+               if (sdata->dev == local->mdev ||
+                   sdata->type != IEEE80211_IF_TYPE_AP)
+                       continue;
+               ap = &sdata->u.ap;
+               skb = skb_dequeue(&ap->ps_bc_buf);
+               if (skb) {
+                       purged++;
+                       dev_kfree_skb(skb);
+               }
+               total += skb_queue_len(&ap->ps_bc_buf);
+       }
+       read_unlock(&local->sub_if_lock);
+
+       spin_lock_bh(&local->sta_lock);
+       list_for_each_entry(sta, &local->sta_list, list) {
+               skb = skb_dequeue(&sta->ps_tx_buf);
+               if (skb) {
+                       purged++;
+                       dev_kfree_skb(skb);
+               }
+               total += skb_queue_len(&sta->ps_tx_buf);
+       }
+       spin_unlock_bh(&local->sta_lock);
+
+       local->total_ps_buffered = total;
+       printk(KERN_DEBUG "%s: PS buffers full - purged %d frames\n",
+              local->mdev->name, purged);
+}
+
+
+static inline ieee80211_txrx_result
+ieee80211_tx_h_multicast_ps_buf(struct ieee80211_txrx_data *tx)
+{
+       /* broadcast/multicast frame */
+       /* If any of the associated stations is in power save mode,
+        * the frame is buffered to be sent after DTIM beacon frame */
+       if ((tx->local->hw.flags & IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING) &&
+           tx->sdata->type != IEEE80211_IF_TYPE_WDS &&
+           tx->sdata->bss && atomic_read(&tx->sdata->bss->num_sta_ps) &&
+           !(tx->fc & IEEE80211_FCTL_ORDER)) {
+               if (tx->local->total_ps_buffered >= TOTAL_MAX_TX_BUFFER)
+                       purge_old_ps_buffers(tx->local);
+               if (skb_queue_len(&tx->sdata->bss->ps_bc_buf) >=
+                   AP_MAX_BC_BUFFER) {
+                       if (net_ratelimit()) {
+                               printk(KERN_DEBUG "%s: BC TX buffer full - "
+                                      "dropping the oldest frame\n",
+                                      tx->dev->name);
+                       }
+                       dev_kfree_skb(skb_dequeue(&tx->sdata->bss->ps_bc_buf));
+               } else
+                       tx->local->total_ps_buffered++;
+               skb_queue_tail(&tx->sdata->bss->ps_bc_buf, tx->skb);
+               return TXRX_QUEUED;
+       }
+
+       return TXRX_CONTINUE;
+}
+
+
+static inline ieee80211_txrx_result
+ieee80211_tx_h_unicast_ps_buf(struct ieee80211_txrx_data *tx)
+{
+       struct sta_info *sta = tx->sta;
+
+       if (unlikely(!sta ||
+                    ((tx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT &&
+                     (tx->fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_PROBE_RESP)))
+               return TXRX_CONTINUE;
+
+       if (unlikely((sta->flags & WLAN_STA_PS) && !sta->pspoll)) {
+               struct ieee80211_tx_packet_data *pkt_data;
+#ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG
+               printk(KERN_DEBUG "STA " MAC_FMT " aid %d: PS buffer (entries "
+                      "before %d)\n",
+                      MAC_ARG(sta->addr), sta->aid,
+                      skb_queue_len(&sta->ps_tx_buf));
+#endif /* CONFIG_MAC80211_VERBOSE_PS_DEBUG */
+               sta->flags |= WLAN_STA_TIM;
+               if (tx->local->total_ps_buffered >= TOTAL_MAX_TX_BUFFER)
+                       purge_old_ps_buffers(tx->local);
+               if (skb_queue_len(&sta->ps_tx_buf) >= STA_MAX_TX_BUFFER) {
+                       struct sk_buff *old = skb_dequeue(&sta->ps_tx_buf);
+                       if (net_ratelimit()) {
+                               printk(KERN_DEBUG "%s: STA " MAC_FMT " TX "
+                                      "buffer full - dropping oldest frame\n",
+                                      tx->dev->name, MAC_ARG(sta->addr));
+                       }
+                       dev_kfree_skb(old);
+               } else
+                       tx->local->total_ps_buffered++;
+               /* Queue frame to be sent after STA sends an PS Poll frame */
+               if (skb_queue_empty(&sta->ps_tx_buf)) {
+                       if (tx->local->ops->set_tim)
+                               tx->local->ops->set_tim(local_to_hw(tx->local),
+                                                      sta->aid, 1);
+                       if (tx->sdata->bss)
+                               bss_tim_set(tx->local, tx->sdata->bss, sta->aid);
+               }
+               pkt_data = (struct ieee80211_tx_packet_data *)tx->skb->cb;
+               pkt_data->jiffies = jiffies;
+               skb_queue_tail(&sta->ps_tx_buf, tx->skb);
+               return TXRX_QUEUED;
+       }
+#ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG
+       else if (unlikely(sta->flags & WLAN_STA_PS)) {
+               printk(KERN_DEBUG "%s: STA " MAC_FMT " in PS mode, but pspoll "
+                      "set -> send frame\n", tx->dev->name,
+                      MAC_ARG(sta->addr));
+       }
+#endif /* CONFIG_MAC80211_VERBOSE_PS_DEBUG */
+       sta->pspoll = 0;
+
+       return TXRX_CONTINUE;
+}
+
+
+static ieee80211_txrx_result
+ieee80211_tx_h_ps_buf(struct ieee80211_txrx_data *tx)
+{
+       if (unlikely(tx->u.tx.ps_buffered))
+               return TXRX_CONTINUE;
+
+       if (tx->u.tx.unicast)
+               return ieee80211_tx_h_unicast_ps_buf(tx);
+       else
+               return ieee80211_tx_h_multicast_ps_buf(tx);
+}
+
+
+static void inline
+__ieee80211_tx_prepare(struct ieee80211_txrx_data *tx,
+                      struct sk_buff *skb,
+                      struct net_device *dev,
+                      struct ieee80211_tx_control *control)
+{
+       struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+       struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+       int hdrlen;
+
+       memset(tx, 0, sizeof(*tx));
+       tx->skb = skb;
+       tx->dev = dev; /* use original interface */
+       tx->local = local;
+       tx->sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+       tx->sta = sta_info_get(local, hdr->addr1);
+       tx->fc = le16_to_cpu(hdr->frame_control);
+       control->power_level = local->hw.conf.power_level;
+       tx->u.tx.control = control;
+       tx->u.tx.unicast = !is_multicast_ether_addr(hdr->addr1);
+       if (is_multicast_ether_addr(hdr->addr1))
+               control->flags |= IEEE80211_TXCTL_NO_ACK;
+       else
+               control->flags &= ~IEEE80211_TXCTL_NO_ACK;
+       tx->fragmented = local->fragmentation_threshold <
+               IEEE80211_MAX_FRAG_THRESHOLD && tx->u.tx.unicast &&
+               skb->len + FCS_LEN > local->fragmentation_threshold &&
+               (!local->ops->set_frag_threshold);
+       if (!tx->sta)
+               control->flags |= IEEE80211_TXCTL_CLEAR_DST_MASK;
+       else if (tx->sta->clear_dst_mask) {
+               control->flags |= IEEE80211_TXCTL_CLEAR_DST_MASK;
+               tx->sta->clear_dst_mask = 0;
+       }
+       control->antenna_sel_tx = local->hw.conf.antenna_sel_tx;
+       if (local->sta_antenna_sel != STA_ANTENNA_SEL_AUTO && tx->sta)
+               control->antenna_sel_tx = tx->sta->antenna_sel_tx;
+       hdrlen = ieee80211_get_hdrlen(tx->fc);
+       if (skb->len > hdrlen + sizeof(rfc1042_header) + 2) {
+               u8 *pos = &skb->data[hdrlen + sizeof(rfc1042_header)];
+               tx->ethertype = (pos[0] << 8) | pos[1];
+       }
+       control->flags |= IEEE80211_TXCTL_FIRST_FRAGMENT;
+
+}
+
+static int inline is_ieee80211_device(struct net_device *dev,
+                                     struct net_device *master)
+{
+       return (wdev_priv(dev->ieee80211_ptr) ==
+               wdev_priv(master->ieee80211_ptr));
+}
+
+/* Device in tx->dev has a reference added; use dev_put(tx->dev) when
+ * finished with it. */
+static int inline ieee80211_tx_prepare(struct ieee80211_txrx_data *tx,
+                                      struct sk_buff *skb,
+                                      struct net_device *mdev,
+                                      struct ieee80211_tx_control *control)
+{
+       struct ieee80211_tx_packet_data *pkt_data;
+       struct net_device *dev;
+
+       pkt_data = (struct ieee80211_tx_packet_data *)skb->cb;
+       dev = dev_get_by_index(pkt_data->ifindex);
+       if (unlikely(dev && !is_ieee80211_device(dev, mdev))) {
+               dev_put(dev);
+               dev = NULL;
+       }
+       if (unlikely(!dev))
+               return -ENODEV;
+       __ieee80211_tx_prepare(tx, skb, dev, control);
+       return 0;
+}
+
+static inline int __ieee80211_queue_stopped(const struct ieee80211_local *local,
+                                           int queue)
+{
+       return test_bit(IEEE80211_LINK_STATE_XOFF, &local->state[queue]);
+}
+
+static inline int __ieee80211_queue_pending(const struct ieee80211_local *local,
+                                           int queue)
+{
+       return test_bit(IEEE80211_LINK_STATE_PENDING, &local->state[queue]);
+}
+
+#define IEEE80211_TX_OK                0
+#define IEEE80211_TX_AGAIN     1
+#define IEEE80211_TX_FRAG_AGAIN        2
+
+static int __ieee80211_tx(struct ieee80211_local *local, struct sk_buff *skb,
+                         struct ieee80211_txrx_data *tx)
+{
+       struct ieee80211_tx_control *control = tx->u.tx.control;
+       int ret, i;
+
+       if (!ieee80211_qdisc_installed(local->mdev) &&
+           __ieee80211_queue_stopped(local, 0)) {
+               netif_stop_queue(local->mdev);
+               return IEEE80211_TX_AGAIN;
+       }
+       if (skb) {
+               ieee80211_dump_frame(local->mdev->name, "TX to low-level driver", skb);
+               ret = local->ops->tx(local_to_hw(local), skb, control);
+               if (ret)
+                       return IEEE80211_TX_AGAIN;
+               local->mdev->trans_start = jiffies;
+               ieee80211_led_tx(local, 1);
+       }
+       if (tx->u.tx.extra_frag) {
+               control->flags &= ~(IEEE80211_TXCTL_USE_RTS_CTS |
+                                   IEEE80211_TXCTL_USE_CTS_PROTECT |
+                                   IEEE80211_TXCTL_CLEAR_DST_MASK |
+                                   IEEE80211_TXCTL_FIRST_FRAGMENT);
+               for (i = 0; i < tx->u.tx.num_extra_frag; i++) {
+                       if (!tx->u.tx.extra_frag[i])
+                               continue;
+                       if (__ieee80211_queue_stopped(local, control->queue))
+                               return IEEE80211_TX_FRAG_AGAIN;
+                       if (i == tx->u.tx.num_extra_frag) {
+                               control->tx_rate = tx->u.tx.last_frag_hwrate;
+                               control->rate = tx->u.tx.last_frag_rate;
+                               if (tx->u.tx.probe_last_frag)
+                                       control->flags |=
+                                               IEEE80211_TXCTL_RATE_CTRL_PROBE;
+                               else
+                                       control->flags &=
+                                               ~IEEE80211_TXCTL_RATE_CTRL_PROBE;
+                       }
+
+                       ieee80211_dump_frame(local->mdev->name,
+                                            "TX to low-level driver",
+                                            tx->u.tx.extra_frag[i]);
+                       ret = local->ops->tx(local_to_hw(local),
+                                           tx->u.tx.extra_frag[i],
+                                           control);
+                       if (ret)
+                               return IEEE80211_TX_FRAG_AGAIN;
+                       local->mdev->trans_start = jiffies;
+                       ieee80211_led_tx(local, 1);
+                       tx->u.tx.extra_frag[i] = NULL;
+               }
+               kfree(tx->u.tx.extra_frag);
+               tx->u.tx.extra_frag = NULL;
+       }
+       return IEEE80211_TX_OK;
+}
+
+static int ieee80211_tx(struct net_device *dev, struct sk_buff *skb,
+                       struct ieee80211_tx_control *control, int mgmt)
+{
+       struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+       struct sta_info *sta;
+       ieee80211_tx_handler *handler;
+       struct ieee80211_txrx_data tx;
+       ieee80211_txrx_result res = TXRX_DROP;
+       int ret, i;
+
+       WARN_ON(__ieee80211_queue_pending(local, control->queue));
+
+       if (unlikely(skb->len < 10)) {
+               dev_kfree_skb(skb);
+               return 0;
+       }
+
+       __ieee80211_tx_prepare(&tx, skb, dev, control);
+       sta = tx.sta;
+       tx.u.tx.mgmt_interface = mgmt;
+       tx.u.tx.mode = local->hw.conf.mode;
+
+       for (handler = local->tx_handlers; *handler != NULL; handler++) {
+               res = (*handler)(&tx);
+               if (res != TXRX_CONTINUE)
+                       break;
+       }
+
+       skb = tx.skb; /* handlers are allowed to change skb */
+
+       if (sta)
+               sta_info_put(sta);
+
+       if (unlikely(res == TXRX_DROP)) {
+               I802_DEBUG_INC(local->tx_handlers_drop);
+               goto drop;
+       }
+
+       if (unlikely(res == TXRX_QUEUED)) {
+               I802_DEBUG_INC(local->tx_handlers_queued);
+               return 0;
+       }
+
+       if (tx.u.tx.extra_frag) {
+               for (i = 0; i < tx.u.tx.num_extra_frag; i++) {
+                       int next_len, dur;
+                       struct ieee80211_hdr *hdr =
+                               (struct ieee80211_hdr *)
+                               tx.u.tx.extra_frag[i]->data;
+
+                       if (i + 1 < tx.u.tx.num_extra_frag) {
+                               next_len = tx.u.tx.extra_frag[i + 1]->len;
+                       } else {
+                               next_len = 0;
+                               tx.u.tx.rate = tx.u.tx.last_frag_rate;
+                               tx.u.tx.last_frag_hwrate = tx.u.tx.rate->val;
+                       }
+                       dur = ieee80211_duration(&tx, 0, next_len);
+                       hdr->duration_id = cpu_to_le16(dur);
+               }
+       }
+
+retry:
+       ret = __ieee80211_tx(local, skb, &tx);
+       if (ret) {
+               struct ieee80211_tx_stored_packet *store =
+                       &local->pending_packet[control->queue];
+
+               if (ret == IEEE80211_TX_FRAG_AGAIN)
+                       skb = NULL;
+               set_bit(IEEE80211_LINK_STATE_PENDING,
+                       &local->state[control->queue]);
+               smp_mb();
+               /* When the driver gets out of buffers during sending of
+                * fragments and calls ieee80211_stop_queue, there is
+                * a small window between IEEE80211_LINK_STATE_XOFF and
+                * IEEE80211_LINK_STATE_PENDING flags are set. If a buffer
+                * gets available in that window (i.e. driver calls
+                * ieee80211_wake_queue), we would end up with ieee80211_tx
+                * called with IEEE80211_LINK_STATE_PENDING. Prevent this by
+                * continuing transmitting here when that situation is
+                * possible to have happened. */
+               if (!__ieee80211_queue_stopped(local, control->queue)) {
+                       clear_bit(IEEE80211_LINK_STATE_PENDING,
+                                 &local->state[control->queue]);
+                       goto retry;
+               }
+               memcpy(&store->control, control,
+                      sizeof(struct ieee80211_tx_control));
+               store->skb = skb;
+               store->extra_frag = tx.u.tx.extra_frag;
+               store->num_extra_frag = tx.u.tx.num_extra_frag;
+               store->last_frag_hwrate = tx.u.tx.last_frag_hwrate;
+               store->last_frag_rate = tx.u.tx.last_frag_rate;
+               store->last_frag_rate_ctrl_probe = tx.u.tx.probe_last_frag;
+       }
+       return 0;
+
+ drop:
+       if (skb)
+               dev_kfree_skb(skb);
+       for (i = 0; i < tx.u.tx.num_extra_frag; i++)
+               if (tx.u.tx.extra_frag[i])
+                       dev_kfree_skb(tx.u.tx.extra_frag[i]);
+       kfree(tx.u.tx.extra_frag);
+       return 0;
+}
+
+static void ieee80211_tx_pending(unsigned long data)
+{
+       struct ieee80211_local *local = (struct ieee80211_local *)data;
+       struct net_device *dev = local->mdev;
+       struct ieee80211_tx_stored_packet *store;
+       struct ieee80211_txrx_data tx;
+       int i, ret, reschedule = 0;
+
+       netif_tx_lock_bh(dev);
+       for (i = 0; i < local->hw.queues; i++) {
+               if (__ieee80211_queue_stopped(local, i))
+                       continue;
+               if (!__ieee80211_queue_pending(local, i)) {
+                       reschedule = 1;
+                       continue;
+               }
+               store = &local->pending_packet[i];
+               tx.u.tx.control = &store->control;
+               tx.u.tx.extra_frag = store->extra_frag;
+               tx.u.tx.num_extra_frag = store->num_extra_frag;
+               tx.u.tx.last_frag_hwrate = store->last_frag_hwrate;
+               tx.u.tx.last_frag_rate = store->last_frag_rate;
+               tx.u.tx.probe_last_frag = store->last_frag_rate_ctrl_probe;
+               ret = __ieee80211_tx(local, store->skb, &tx);
+               if (ret) {
+                       if (ret == IEEE80211_TX_FRAG_AGAIN)
+                               store->skb = NULL;
+               } else {
+                       clear_bit(IEEE80211_LINK_STATE_PENDING,
+                                 &local->state[i]);
+                       reschedule = 1;
+               }
+       }
+       netif_tx_unlock_bh(dev);
+       if (reschedule) {
+               if (!ieee80211_qdisc_installed(dev)) {
+                       if (!__ieee80211_queue_stopped(local, 0))
+                               netif_wake_queue(dev);
+               } else
+                       netif_schedule(dev);
+       }
+}
+
+static void ieee80211_clear_tx_pending(struct ieee80211_local *local)
+{
+       int i, j;
+       struct ieee80211_tx_stored_packet *store;
+
+       for (i = 0; i < local->hw.queues; i++) {
+               if (!__ieee80211_queue_pending(local, i))
+                       continue;
+               store = &local->pending_packet[i];
+               kfree_skb(store->skb);
+               for (j = 0; j < store->num_extra_frag; j++)
+                       kfree_skb(store->extra_frag[j]);
+               kfree(store->extra_frag);
+               clear_bit(IEEE80211_LINK_STATE_PENDING, &local->state[i]);
+       }
+}
+
+static int ieee80211_master_start_xmit(struct sk_buff *skb,
+                                      struct net_device *dev)
+{
+       struct ieee80211_tx_control control;
+       struct ieee80211_tx_packet_data *pkt_data;
+       struct net_device *odev = NULL;
+       struct ieee80211_sub_if_data *osdata;
+       int headroom;
+       int ret;
+
+       /*
+        * copy control out of the skb so other people can use skb->cb
+        */
+       pkt_data = (struct ieee80211_tx_packet_data *)skb->cb;
+       memset(&control, 0, sizeof(struct ieee80211_tx_control));
+
+       if (pkt_data->ifindex)
+               odev = dev_get_by_index(pkt_data->ifindex);
+       if (unlikely(odev && !is_ieee80211_device(odev, dev))) {
+               dev_put(odev);
+               odev = NULL;
+       }
+       if (unlikely(!odev)) {
+#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
+               printk(KERN_DEBUG "%s: Discarded packet with nonexistent "
+                      "originating device\n", dev->name);
+#endif
+               dev_kfree_skb(skb);
+               return 0;
+       }
+       osdata = IEEE80211_DEV_TO_SUB_IF(odev);
+
+       headroom = osdata->local->hw.extra_tx_headroom +
+               IEEE80211_ENCRYPT_HEADROOM;
+       if (skb_headroom(skb) < headroom) {
+               if (pskb_expand_head(skb, headroom, 0, GFP_ATOMIC)) {
+                       dev_kfree_skb(skb);
+                       return 0;
+               }
+       }
+
+       control.ifindex = odev->ifindex;
+       control.type = osdata->type;
+       if (pkt_data->req_tx_status)
+               control.flags |= IEEE80211_TXCTL_REQ_TX_STATUS;
+       if (pkt_data->do_not_encrypt)
+               control.flags |= IEEE80211_TXCTL_DO_NOT_ENCRYPT;
+       if (pkt_data->requeue)
+               control.flags |= IEEE80211_TXCTL_REQUEUE;
+       control.queue = pkt_data->queue;
+
+       ret = ieee80211_tx(odev, skb, &control,
+                          control.type == IEEE80211_IF_TYPE_MGMT);
+       dev_put(odev);
+
+       return ret;
+}
+
+
+/**
+ * ieee80211_subif_start_xmit - netif start_xmit function for Ethernet-type
+ * subinterfaces (wlan#, WDS, and VLAN interfaces)
+ * @skb: packet to be sent
+ * @dev: incoming interface
+ *
+ * Returns: 0 on success (and frees skb in this case) or 1 on failure (skb will
+ * not be freed, and caller is responsible for either retrying later or freeing
+ * skb).
+ *
+ * This function takes in an Ethernet header and encapsulates it with suitable
+ * IEEE 802.11 header based on which interface the packet is coming in. The
+ * encapsulated packet will then be passed to master interface, wlan#.11, for
+ * transmission (through low-level driver).
+ */
+static int ieee80211_subif_start_xmit(struct sk_buff *skb,
+                                     struct net_device *dev)
+{
+       struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+       struct ieee80211_tx_packet_data *pkt_data;
+       struct ieee80211_sub_if_data *sdata;
+       int ret = 1, head_need;
+       u16 ethertype, hdrlen, fc;
+       struct ieee80211_hdr hdr;
+       const u8 *encaps_data;
+       int encaps_len, skip_header_bytes;
+       int nh_pos, h_pos, no_encrypt = 0;
+       struct sta_info *sta;
+
+       sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+       if (unlikely(skb->len < ETH_HLEN)) {
+               printk(KERN_DEBUG "%s: short skb (len=%d)\n",
+                      dev->name, skb->len);
+               ret = 0;
+               goto fail;
+       }
+
+       nh_pos = skb_network_header(skb) - skb->data;
+       h_pos = skb_transport_header(skb) - skb->data;
+
+       /* convert Ethernet header to proper 802.11 header (based on
+        * operation mode) */
+       ethertype = (skb->data[12] << 8) | skb->data[13];
+       /* TODO: handling for 802.1x authorized/unauthorized port */
+       fc = IEEE80211_FTYPE_DATA | IEEE80211_STYPE_DATA;
+
+       if (likely(sdata->type == IEEE80211_IF_TYPE_AP ||
+                  sdata->type == IEEE80211_IF_TYPE_VLAN)) {
+               fc |= IEEE80211_FCTL_FROMDS;
+               /* DA BSSID SA */
+               memcpy(hdr.addr1, skb->data, ETH_ALEN);
+               memcpy(hdr.addr2, dev->dev_addr, ETH_ALEN);
+               memcpy(hdr.addr3, skb->data + ETH_ALEN, ETH_ALEN);
+               hdrlen = 24;
+       } else if (sdata->type == IEEE80211_IF_TYPE_WDS) {
+               fc |= IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS;
+               /* RA TA DA SA */
+               memcpy(hdr.addr1, sdata->u.wds.remote_addr, ETH_ALEN);
+               memcpy(hdr.addr2, dev->dev_addr, ETH_ALEN);
+               memcpy(hdr.addr3, skb->data, ETH_ALEN);
+               memcpy(hdr.addr4, skb->data + ETH_ALEN, ETH_ALEN);
+               hdrlen = 30;
+       } else if (sdata->type == IEEE80211_IF_TYPE_STA) {
+               if (dls_link_status(local, skb->data) == DLS_STATUS_OK){
+                       /* DA SA BSSID */
+                       memcpy(hdr.addr1, skb->data, ETH_ALEN);
+                       memcpy(hdr.addr2, skb->data + ETH_ALEN, ETH_ALEN);
+                       memcpy(hdr.addr3, sdata->u.sta.bssid, ETH_ALEN);
+               } else {
+                       fc |= IEEE80211_FCTL_TODS;
+                       /* BSSID SA DA */
+                       memcpy(hdr.addr1, sdata->u.sta.bssid, ETH_ALEN);
+                       memcpy(hdr.addr2, skb->data + ETH_ALEN, ETH_ALEN);
+                       memcpy(hdr.addr3, skb->data, ETH_ALEN);
+               }
+               hdrlen = 24;
+       } else if (sdata->type == IEEE80211_IF_TYPE_IBSS) {
+               /* DA SA BSSID */
+               memcpy(hdr.addr1, skb->data, ETH_ALEN);
+               memcpy(hdr.addr2, skb->data + ETH_ALEN, ETH_ALEN);
+               memcpy(hdr.addr3, sdata->u.sta.bssid, ETH_ALEN);
+               hdrlen = 24;
+       } else {
+               ret = 0;
+               goto fail;
+       }
+
+       /* receiver is QoS enabled, use a QoS type frame */
+       sta = sta_info_get(local, hdr.addr1);
+       if (sta) {
+               if (sta->flags & WLAN_STA_WME) {
+                       fc |= IEEE80211_STYPE_QOS_DATA;
+                       hdrlen += 2;
+               }
+               sta_info_put(sta);
+       }
+
+       hdr.frame_control = cpu_to_le16(fc);
+       hdr.duration_id = 0;
+       hdr.seq_ctrl = 0;
+
+       skip_header_bytes = ETH_HLEN;
+       if (ethertype == ETH_P_AARP || ethertype == ETH_P_IPX) {
+               encaps_data = bridge_tunnel_header;
+               encaps_len = sizeof(bridge_tunnel_header);
+               skip_header_bytes -= 2;
+       } else if (ethertype >= 0x600) {
+               encaps_data = rfc1042_header;
+               encaps_len = sizeof(rfc1042_header);
+               skip_header_bytes -= 2;
+       } else {
+               encaps_data = NULL;
+               encaps_len = 0;
+       }
+
+       skb_pull(skb, skip_header_bytes);
+       nh_pos -= skip_header_bytes;
+       h_pos -= skip_header_bytes;
+
+       /* TODO: implement support for fragments so that there is no need to
+        * reallocate and copy payload; it might be enough to support one
+        * extra fragment that would be copied in the beginning of the frame
+        * data.. anyway, it would be nice to include this into skb structure
+        * somehow
+        *
+        * There are few options for this:
+        * use skb->cb as an extra space for 802.11 header
+        * allocate new buffer if not enough headroom
+        * make sure that there is enough headroom in every skb by increasing
+        * build in headroom in __dev_alloc_skb() (linux/skbuff.h) and
+        * alloc_skb() (net/core/skbuff.c)
+        */
+       head_need = hdrlen + encaps_len + local->hw.extra_tx_headroom;
+       head_need -= skb_headroom(skb);
+
+       /* We are going to modify skb data, so make a copy of it if happens to
+        * be cloned. This could happen, e.g., with Linux bridge code passing
+        * us broadcast frames. */
+
+       if (head_need > 0 || skb_cloned(skb)) {
+#if 0
+               printk(KERN_DEBUG "%s: need to reallocate buffer for %d bytes "
+                      "of headroom\n", dev->name, head_need);
+#endif
+
+               if (skb_cloned(skb))
+                       I802_DEBUG_INC(local->tx_expand_skb_head_cloned);
+               else
+                       I802_DEBUG_INC(local->tx_expand_skb_head);
+               /* Since we have to reallocate the buffer, make sure that there
+                * is enough room for possible WEP IV/ICV and TKIP (8 bytes
+                * before payload and 12 after). */
+               if (pskb_expand_head(skb, (head_need > 0 ? head_need + 8 : 8),
+                                    12, GFP_ATOMIC)) {
+                       printk(KERN_DEBUG "%s: failed to reallocate TX buffer"
+                              "\n", dev->name);
+                       goto fail;
+               }
+       }
+
+       if (encaps_data) {
+               memcpy(skb_push(skb, encaps_len), encaps_data, encaps_len);
+               nh_pos += encaps_len;
+               h_pos += encaps_len;
+       }
+       memcpy(skb_push(skb, hdrlen), &hdr, hdrlen);
+       nh_pos += hdrlen;
+       h_pos += hdrlen;
+
+       pkt_data = (struct ieee80211_tx_packet_data *)skb->cb;
+       memset(pkt_data, 0, sizeof(struct ieee80211_tx_packet_data));
+       pkt_data->ifindex = sdata->dev->ifindex;
+       pkt_data->mgmt_iface = (sdata->type == IEEE80211_IF_TYPE_MGMT);
+       pkt_data->do_not_encrypt = no_encrypt;
+
+       skb->dev = local->mdev;
+       sdata->stats.tx_packets++;
+       sdata->stats.tx_bytes += skb->len;
+
+       /* Update skb pointers to various headers since this modified frame
+        * is going to go through Linux networking code that may potentially
+        * need things like pointer to IP header. */
+       skb_set_mac_header(skb, 0);
+       skb_set_network_header(skb, nh_pos);
+       skb_set_transport_header(skb, h_pos);
+
+       dev->trans_start = jiffies;
+       dev_queue_xmit(skb);
+
+       return 0;
+
+ fail:
+       if (!ret)
+               dev_kfree_skb(skb);
+
+       return ret;
+}
+
+
+/*
+ * This is the transmit routine for the 802.11 type interfaces
+ * called by upper layers of the linux networking
+ * stack when it has a frame to transmit
+ */
+static int
+ieee80211_mgmt_start_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+       struct ieee80211_sub_if_data *sdata;
+       struct ieee80211_tx_packet_data *pkt_data;
+       struct ieee80211_hdr *hdr;
+       u16 fc;
+
+       sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+       if (skb->len < 10) {
+               dev_kfree_skb(skb);
+               return 0;
+       }
+
+       if (skb_headroom(skb) < sdata->local->hw.extra_tx_headroom) {
+               if (pskb_expand_head(skb,
+                   sdata->local->hw.extra_tx_headroom, 0, GFP_ATOMIC)) {
+                       dev_kfree_skb(skb);
+                       return 0;
+               }
+       }
+
+       hdr = (struct ieee80211_hdr *) skb->data;
+       fc = le16_to_cpu(hdr->frame_control);
+
+       pkt_data = (struct ieee80211_tx_packet_data *) skb->cb;
+       memset(pkt_data, 0, sizeof(struct ieee80211_tx_packet_data));
+       pkt_data->ifindex = sdata->dev->ifindex;
+       pkt_data->mgmt_iface = (sdata->type == IEEE80211_IF_TYPE_MGMT);
+
+       skb->priority = 20; /* use hardcoded priority for mgmt TX queue */
+       skb->dev = sdata->local->mdev;
+
+       /*
+        * We're using the protocol field of the the frame control header
+        * to request TX callback for hostapd. BIT(1) is checked.
+        */
+       if ((fc & BIT(1)) == BIT(1)) {
+               pkt_data->req_tx_status = 1;
+               fc &= ~BIT(1);
+               hdr->frame_control = cpu_to_le16(fc);
+       }
+
+       pkt_data->do_not_encrypt = !(fc & IEEE80211_FCTL_PROTECTED);
+
+       sdata->stats.tx_packets++;
+       sdata->stats.tx_bytes += skb->len;
+
+       dev_queue_xmit(skb);
+
+       return 0;
+}
+
+
+static void ieee80211_beacon_add_tim(struct ieee80211_local *local,
+                                    struct ieee80211_if_ap *bss,
+                                    struct sk_buff *skb)
+{
+       u8 *pos, *tim;
+       int aid0 = 0;
+       int i, have_bits = 0, n1, n2;
+
+       /* Generate bitmap for TIM only if there are any STAs in power save
+        * mode. */
+       spin_lock_bh(&local->sta_lock);
+       if (atomic_read(&bss->num_sta_ps) > 0)
+               /* in the hope that this is faster than
+                * checking byte-for-byte */
+               have_bits = !bitmap_empty((unsigned long*)bss->tim,
+                                         IEEE80211_MAX_AID+1);
+
+       if (bss->dtim_count == 0)
+               bss->dtim_count = bss->dtim_period - 1;
+       else
+               bss->dtim_count--;
+
+       tim = pos = (u8 *) skb_put(skb, 6);
+       *pos++ = WLAN_EID_TIM;
+       *pos++ = 4;
+       *pos++ = bss->dtim_count;
+       *pos++ = bss->dtim_period;
+
+       if (bss->dtim_count == 0 && !skb_queue_empty(&bss->ps_bc_buf))
+               aid0 = 1;
+
+       if (have_bits) {
+               /* Find largest even number N1 so that bits numbered 1 through
+                * (N1 x 8) - 1 in the bitmap are 0 and number N2 so that bits
+                * (N2 + 1) x 8 through 2007 are 0. */
+               n1 = 0;
+               for (i = 0; i < IEEE80211_MAX_TIM_LEN; i++) {
+                       if (bss->tim[i]) {
+                               n1 = i & 0xfe;
+                               break;
+                       }
+               }
+               n2 = n1;
+               for (i = IEEE80211_MAX_TIM_LEN - 1; i >= n1; i--) {
+                       if (bss->tim[i]) {
+                               n2 = i;
+                               break;
+                       }
+               }
+
+               /* Bitmap control */
+               *pos++ = n1 | aid0;
+               /* Part Virt Bitmap */
+               memcpy(pos, bss->tim + n1, n2 - n1 + 1);
+
+               tim[1] = n2 - n1 + 4;
+               skb_put(skb, n2 - n1);
+       } else {
+               *pos++ = aid0; /* Bitmap control */
+               *pos++ = 0; /* Part Virt Bitmap */
+       }
+       spin_unlock_bh(&local->sta_lock);
+}
+
+
+struct sk_buff * ieee80211_beacon_get(struct ieee80211_hw *hw, int if_id,
+                                     struct ieee80211_tx_control *control)
+{
+       struct ieee80211_local *local = hw_to_local(hw);
+       struct sk_buff *skb;
+       struct net_device *bdev;
+       struct ieee80211_sub_if_data *sdata = NULL;
+       struct ieee80211_if_ap *ap = NULL;
+       struct ieee80211_rate *rate;
+       struct rate_control_extra extra;
+       u8 *b_head, *b_tail;
+       int bh_len, bt_len;
+
+       bdev = dev_get_by_index(if_id);
+       if (bdev) {
+               sdata = IEEE80211_DEV_TO_SUB_IF(bdev);
+               ap = &sdata->u.ap;
+               dev_put(bdev);
+       }
+
+       if (!ap || sdata->type != IEEE80211_IF_TYPE_AP ||
+           !ap->beacon_head) {
+#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
+               if (net_ratelimit())
+                       printk(KERN_DEBUG "no beacon data avail for idx=%d "
+                              "(%s)\n", if_id, bdev ? bdev->name : "N/A");
+#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
+               return NULL;
+       }
+
+       /* Assume we are generating the normal beacon locally */
+       b_head = ap->beacon_head;
+       b_tail = ap->beacon_tail;
+       bh_len = ap->beacon_head_len;
+       bt_len = ap->beacon_tail_len;
+
+       skb = dev_alloc_skb(local->hw.extra_tx_headroom +
+               bh_len + bt_len + 256 /* maximum TIM len */);
+       if (!skb)
+               return NULL;
+
+       skb_reserve(skb, local->hw.extra_tx_headroom);
+       memcpy(skb_put(skb, bh_len), b_head, bh_len);
+
+       ieee80211_include_sequence(sdata, (struct ieee80211_hdr *)skb->data);
+
+       ieee80211_beacon_add_tim(local, ap, skb);
+
+       if (b_tail) {
+               memcpy(skb_put(skb, bt_len), b_tail, bt_len);
+       }
+
+       if (control) {
+               memset(&extra, 0, sizeof(extra));
+               extra.mode = local->oper_hw_mode;
+
+               rate = rate_control_get_rate(local, local->mdev, skb, &extra);
+               if (!rate) {
+                       if (net_ratelimit()) {
+                               printk(KERN_DEBUG "%s: ieee80211_beacon_get: no rate "
+                                      "found\n", local->mdev->name);
+                       }
+                       dev_kfree_skb(skb);
+                       return NULL;
+               }
+
+               control->tx_rate = (local->short_preamble &&
+                                   (rate->flags & IEEE80211_RATE_PREAMBLE2)) ?
+                       rate->val2 : rate->val;
+               control->antenna_sel_tx = local->hw.conf.antenna_sel_tx;
+               control->power_level = local->hw.conf.power_level;
+               control->flags |= IEEE80211_TXCTL_NO_ACK;
+               control->retry_limit = 1;
+               control->flags |= IEEE80211_TXCTL_CLEAR_DST_MASK;
+       }
+
+       ap->num_beacons++;
+       return skb;
+}
+EXPORT_SYMBOL(ieee80211_beacon_get);
+
+__le16 ieee80211_rts_duration(struct ieee80211_hw *hw,
+                             size_t frame_len,
+                             const struct ieee80211_tx_control *frame_txctl)
+{
+       struct ieee80211_local *local = hw_to_local(hw);
+       struct ieee80211_rate *rate;
+       int short_preamble = local->short_preamble;
+       int erp;
+       u16 dur;
+
+       rate = frame_txctl->rts_rate;
+       erp = !!(rate->flags & IEEE80211_RATE_ERP);
+
+       /* CTS duration */
+       dur = ieee80211_frame_duration(local, 10, rate->rate,
+                                      erp, short_preamble);
+       /* Data frame duration */
+       dur += ieee80211_frame_duration(local, frame_len, rate->rate,
+                                       erp, short_preamble);
+       /* ACK duration */
+       dur += ieee80211_frame_duration(local, 10, rate->rate,
+                                       erp, short_preamble);
+
+       return cpu_to_le16(dur);
+}
+EXPORT_SYMBOL(ieee80211_rts_duration);
+
+
+__le16 ieee80211_ctstoself_duration(struct ieee80211_hw *hw,
+                                   size_t frame_len,
+                                   const struct ieee80211_tx_control *frame_txctl)
+{
+       struct ieee80211_local *local = hw_to_local(hw);
+       struct ieee80211_rate *rate;
+       int short_preamble = local->short_preamble;
+       int erp;
+       u16 dur;
+
+       rate = frame_txctl->rts_rate;
+       erp = !!(rate->flags & IEEE80211_RATE_ERP);
+
+       /* Data frame duration */
+       dur = ieee80211_frame_duration(local, frame_len, rate->rate,
+                                      erp, short_preamble);
+       if (!(frame_txctl->flags & IEEE80211_TXCTL_NO_ACK)) {
+               /* ACK duration */
+               dur += ieee80211_frame_duration(local, 10, rate->rate,
+                                               erp, short_preamble);
+       }
+
+       return cpu_to_le16(dur);
+}
+EXPORT_SYMBOL(ieee80211_ctstoself_duration);
+
+void ieee80211_rts_get(struct ieee80211_hw *hw,
+                      const void *frame, size_t frame_len,
+                      const struct ieee80211_tx_control *frame_txctl,
+                      struct ieee80211_rts *rts)
+{
+       const struct ieee80211_hdr *hdr = frame;
+       u16 fctl;
+
+       fctl = IEEE80211_FTYPE_CTL | IEEE80211_STYPE_RTS;
+       rts->frame_control = cpu_to_le16(fctl);
+       rts->duration = ieee80211_rts_duration(hw, frame_len, frame_txctl);
+       memcpy(rts->ra, hdr->addr1, sizeof(rts->ra));
+       memcpy(rts->ta, hdr->addr2, sizeof(rts->ta));
+}
+EXPORT_SYMBOL(ieee80211_rts_get);
+
+void ieee80211_ctstoself_get(struct ieee80211_hw *hw,
+                            const void *frame, size_t frame_len,
+                            const struct ieee80211_tx_control *frame_txctl,
+                            struct ieee80211_cts *cts)
+{
+       const struct ieee80211_hdr *hdr = frame;
+       u16 fctl;
+
+       fctl = IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CTS;
+       cts->frame_control = cpu_to_le16(fctl);
+       cts->duration = ieee80211_ctstoself_duration(hw, frame_len, frame_txctl);
+       memcpy(cts->ra, hdr->addr1, sizeof(cts->ra));
+}
+EXPORT_SYMBOL(ieee80211_ctstoself_get);
+
+struct sk_buff *
+ieee80211_get_buffered_bc(struct ieee80211_hw *hw, int if_id,
+                         struct ieee80211_tx_control *control)
+{
+       struct ieee80211_local *local = hw_to_local(hw);
+       struct sk_buff *skb;
+       struct sta_info *sta;
+       ieee80211_tx_handler *handler;
+       struct ieee80211_txrx_data tx;
+       ieee80211_txrx_result res = TXRX_DROP;
+       struct net_device *bdev;
+       struct ieee80211_sub_if_data *sdata;
+       struct ieee80211_if_ap *bss = NULL;
+
+       bdev = dev_get_by_index(if_id);
+       if (bdev) {
+               sdata = IEEE80211_DEV_TO_SUB_IF(bdev);
+               bss = &sdata->u.ap;
+               dev_put(bdev);
+       }
+       if (!bss || sdata->type != IEEE80211_IF_TYPE_AP || !bss->beacon_head)
+               return NULL;
+
+       if (bss->dtim_count != 0)
+               return NULL; /* send buffered bc/mc only after DTIM beacon */
+       memset(control, 0, sizeof(*control));
+       while (1) {
+               skb = skb_dequeue(&bss->ps_bc_buf);
+               if (!skb)
+                       return NULL;
+               local->total_ps_buffered--;
+
+               if (!skb_queue_empty(&bss->ps_bc_buf) && skb->len >= 2) {
+                       struct ieee80211_hdr *hdr =
+                               (struct ieee80211_hdr *) skb->data;
+                       /* more buffered multicast/broadcast frames ==> set
+                        * MoreData flag in IEEE 802.11 header to inform PS
+                        * STAs */
+                       hdr->frame_control |=
+                               cpu_to_le16(IEEE80211_FCTL_MOREDATA);
+               }
+
+               if (ieee80211_tx_prepare(&tx, skb, local->mdev, control) == 0)
+                       break;
+               dev_kfree_skb_any(skb);
+       }
+       sta = tx.sta;
+       tx.u.tx.ps_buffered = 1;
+
+       for (handler = local->tx_handlers; *handler != NULL; handler++) {
+               res = (*handler)(&tx);
+               if (res == TXRX_DROP || res == TXRX_QUEUED)
+                       break;
+       }
+       dev_put(tx.dev);
+       skb = tx.skb; /* handlers are allowed to change skb */
+
+       if (res == TXRX_DROP) {
+               I802_DEBUG_INC(local->tx_handlers_drop);
+               dev_kfree_skb(skb);
+               skb = NULL;
+       } else if (res == TXRX_QUEUED) {
+               I802_DEBUG_INC(local->tx_handlers_queued);
+               skb = NULL;
+       }
+
+       if (sta)
+               sta_info_put(sta);
+
+       return skb;
+}
+EXPORT_SYMBOL(ieee80211_get_buffered_bc);
+
+static int __ieee80211_if_config(struct net_device *dev,
+                                struct sk_buff *beacon,
+                                struct ieee80211_tx_control *control)
+{
+       struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+       struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+       struct ieee80211_if_conf conf;
+       static u8 scan_bssid[] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
+
+       if (!local->ops->config_interface || !netif_running(dev))
+               return 0;
+
+       memset(&conf, 0, sizeof(conf));
+       conf.type = sdata->type;
+       if (sdata->type == IEEE80211_IF_TYPE_STA ||
+           sdata->type == IEEE80211_IF_TYPE_IBSS) {
+               if (local->sta_scanning &&
+                   local->scan_dev == dev)
+                       conf.bssid = scan_bssid;
+               else
+                       conf.bssid = sdata->u.sta.bssid;
+               conf.ssid = sdata->u.sta.ssid;
+               conf.ssid_len = sdata->u.sta.ssid_len;
+               conf.generic_elem = sdata->u.sta.extra_ie;
+               conf.generic_elem_len = sdata->u.sta.extra_ie_len;
+       } else if (sdata->type == IEEE80211_IF_TYPE_AP) {
+               conf.ssid = sdata->u.ap.ssid;
+               conf.ssid_len = sdata->u.ap.ssid_len;
+               conf.generic_elem = sdata->u.ap.generic_elem;
+               conf.generic_elem_len = sdata->u.ap.generic_elem_len;
+               conf.beacon = beacon;
+               conf.beacon_control = control;
+       }
+       return local->ops->config_interface(local_to_hw(local),
+                                          dev->ifindex, &conf);
+}
+
+int ieee80211_if_config(struct net_device *dev)
+{
+       return __ieee80211_if_config(dev, NULL, NULL);
+}
+
+int ieee80211_if_config_beacon(struct net_device *dev)
+{
+       struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+       struct ieee80211_tx_control control;
+       struct sk_buff *skb;
+
+       if (!(local->hw.flags & IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE))
+               return 0;
+       skb = ieee80211_beacon_get(local_to_hw(local), dev->ifindex, &control);
+       if (!skb)
+               return -ENOMEM;
+       return __ieee80211_if_config(dev, skb, &control);
+}
+
+int ieee80211_hw_config(struct ieee80211_local *local)
+{
+       struct ieee80211_hw_mode *mode;
+       struct ieee80211_channel *chan;
+       int ret = 0;
+
+       if (local->sta_scanning) {
+               chan = local->scan_channel;
+               mode = local->scan_hw_mode;
+       } else {
+               chan = local->oper_channel;
+               mode = local->oper_hw_mode;
+       }
+
+       local->hw.conf.channel = chan->chan;
+       local->hw.conf.channel_val = chan->val;
+       local->hw.conf.power_level = chan->power_level;
+       local->hw.conf.freq = chan->freq;
+       local->hw.conf.phymode = mode->mode;
+       local->hw.conf.antenna_max = chan->antenna_max;
+       local->hw.conf.chan = chan;
+       local->hw.conf.mode = mode;
+
+#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
+       printk(KERN_DEBUG "HW CONFIG: channel=%d freq=%d "
+              "phymode=%d\n", local->hw.conf.channel, local->hw.conf.freq,
+              local->hw.conf.phymode);
+#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
+
+       if (local->ops->config)
+               ret = local->ops->config(local_to_hw(local), &local->hw.conf);
+
+       return ret;
+}
+
+
+static int ieee80211_change_mtu(struct net_device *dev, int new_mtu)
+{
+       /* FIX: what would be proper limits for MTU?
+        * This interface uses 802.3 frames. */
+       if (new_mtu < 256 || new_mtu > IEEE80211_MAX_DATA_LEN - 24 - 6) {
+               printk(KERN_WARNING "%s: invalid MTU %d\n",
+                      dev->name, new_mtu);
+               return -EINVAL;
+       }
+
+#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
+       printk(KERN_DEBUG "%s: setting MTU %d\n", dev->name, new_mtu);
+#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
+       dev->mtu = new_mtu;
+       return 0;
+}
+
+
+static int ieee80211_change_mtu_apdev(struct net_device *dev, int new_mtu)
+{
+       /* FIX: what would be proper limits for MTU?
+        * This interface uses 802.11 frames. */
+       if (new_mtu < 256 || new_mtu > IEEE80211_MAX_DATA_LEN) {
+               printk(KERN_WARNING "%s: invalid MTU %d\n",
+                      dev->name, new_mtu);
+               return -EINVAL;
+       }
+
+#ifdef CONFIG_MAC80211_VERBOSE_DEBUG
+       printk(KERN_DEBUG "%s: setting MTU %d\n", dev->name, new_mtu);
+#endif /* CONFIG_MAC80211_VERBOSE_DEBUG */
+       dev->mtu = new_mtu;
+       return 0;
+}
+
+enum netif_tx_lock_class {
+       TX_LOCK_NORMAL,
+       TX_LOCK_MASTER,
+};
+
+static inline void netif_tx_lock_nested(struct net_device *dev, int subclass)
+{
+       spin_lock_nested(&dev->_xmit_lock, subclass);
+       dev->xmit_lock_owner = smp_processor_id();
+}
+
+static void ieee80211_set_multicast_list(struct net_device *dev)
+{
+       struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+       struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+       unsigned short flags;
+
+       netif_tx_lock_nested(local->mdev, TX_LOCK_MASTER);
+       if (((dev->flags & IFF_ALLMULTI) != 0) ^ (sdata->allmulti != 0)) {
+               if (sdata->allmulti) {
+                       sdata->allmulti = 0;
+                       local->iff_allmultis--;
+               } else {
+                       sdata->allmulti = 1;
+                       local->iff_allmultis++;
+               }
+       }
+       if (((dev->flags & IFF_PROMISC) != 0) ^ (sdata->promisc != 0)) {
+               if (sdata->promisc) {
+                       sdata->promisc = 0;
+                       local->iff_promiscs--;
+               } else {
+                       sdata->promisc = 1;
+                       local->iff_promiscs++;
+               }
+       }
+       if (dev->mc_count != sdata->mc_count) {
+               local->mc_count = local->mc_count - sdata->mc_count +
+                                 dev->mc_count;
+               sdata->mc_count = dev->mc_count;
+       }
+       if (local->ops->set_multicast_list) {
+               flags = local->mdev->flags;
+               if (local->iff_allmultis)
+                       flags |= IFF_ALLMULTI;
+               if (local->iff_promiscs)
+                       flags |= IFF_PROMISC;
+               read_lock(&local->sub_if_lock);
+               local->ops->set_multicast_list(local_to_hw(local), flags,
+                                             local->mc_count);
+               read_unlock(&local->sub_if_lock);
+       }
+       netif_tx_unlock(local->mdev);
+}
+
+struct dev_mc_list *ieee80211_get_mc_list_item(struct ieee80211_hw *hw,
+                                              struct dev_mc_list *prev,
+                                              void **ptr)
+{
+       struct ieee80211_local *local = hw_to_local(hw);
+       struct ieee80211_sub_if_data *sdata = *ptr;
+       struct dev_mc_list *mc;
+
+       if (!prev) {
+               WARN_ON(sdata);
+               sdata = NULL;
+       }
+       if (!prev || !prev->next) {
+               if (sdata)
+                       sdata = list_entry(sdata->list.next,
+                                          struct ieee80211_sub_if_data, list);
+               else
+                       sdata = list_entry(local->sub_if_list.next,
+                                          struct ieee80211_sub_if_data, list);
+               if (&sdata->list != &local->sub_if_list)
+                       mc = sdata->dev->mc_list;
+               else
+                       mc = NULL;
+       } else
+               mc = prev->next;
+
+       *ptr = sdata;
+       return mc;
+}
+EXPORT_SYMBOL(ieee80211_get_mc_list_item);
+
+static struct net_device_stats *ieee80211_get_stats(struct net_device *dev)
+{
+       struct ieee80211_sub_if_data *sdata;
+       sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+       return &(sdata->stats);
+}
+
+static void ieee80211_if_shutdown(struct net_device *dev)
+{
+       struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+       struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+       ASSERT_RTNL();
+       switch (sdata->type) {
+       case IEEE80211_IF_TYPE_STA:
+       case IEEE80211_IF_TYPE_IBSS:
+               sdata->u.sta.state = IEEE80211_DISABLED;
+               del_timer_sync(&sdata->u.sta.timer);
+               del_timer_sync(&sdata->u.sta.admit_timer);
+               skb_queue_purge(&sdata->u.sta.skb_queue);
+               if (!local->ops->hw_scan &&
+                   local->scan_dev == sdata->dev) {
+                       local->sta_scanning = 0;
+                       cancel_delayed_work(&local->scan_work);
+               }
+               flush_workqueue(local->hw.workqueue);
+               break;
+       }
+}
+
+static inline int identical_mac_addr_allowed(int type1, int type2)
+{
+       return (type1 == IEEE80211_IF_TYPE_MNTR ||
+               type2 == IEEE80211_IF_TYPE_MNTR ||
+               (type1 == IEEE80211_IF_TYPE_AP &&
+                type2 == IEEE80211_IF_TYPE_WDS) ||
+               (type1 == IEEE80211_IF_TYPE_WDS &&
+                (type2 == IEEE80211_IF_TYPE_WDS ||
+                 type2 == IEEE80211_IF_TYPE_AP)) ||
+               (type1 == IEEE80211_IF_TYPE_AP &&
+                type2 == IEEE80211_IF_TYPE_VLAN) ||
+               (type1 == IEEE80211_IF_TYPE_VLAN &&
+                (type2 == IEEE80211_IF_TYPE_AP ||
+                 type2 == IEEE80211_IF_TYPE_VLAN)));
+}
+
+static int ieee80211_master_open(struct net_device *dev)
+{
+       struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+       struct ieee80211_sub_if_data *sdata;
+       int res = -EOPNOTSUPP;
+
+       read_lock(&local->sub_if_lock);
+       list_for_each_entry(sdata, &local->sub_if_list, list) {
+               if (sdata->dev != dev && netif_running(sdata->dev)) {
+                       res = 0;
+                       break;
+               }
+       }
+       read_unlock(&local->sub_if_lock);
+       return res;
+}
+
+static int ieee80211_master_stop(struct net_device *dev)
+{
+       struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+       struct ieee80211_sub_if_data *sdata;
+
+       read_lock(&local->sub_if_lock);
+       list_for_each_entry(sdata, &local->sub_if_list, list)
+               if (sdata->dev != dev && netif_running(sdata->dev))
+                       dev_close(sdata->dev);
+       read_unlock(&local->sub_if_lock);
+
+       return 0;
+}
+
+static int ieee80211_mgmt_open(struct net_device *dev)
+{
+       struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+
+       if (!netif_running(local->mdev))
+               return -EOPNOTSUPP;
+       return 0;
+}
+
+static int ieee80211_mgmt_stop(struct net_device *dev)
+{
+       return 0;
+}
+
+/* Check if running monitor interfaces should go to a "soft monitor" mode
+ * and switch them if necessary. */
+static inline void ieee80211_start_soft_monitor(struct ieee80211_local *local)
+{
+       struct ieee80211_if_init_conf conf;
+
+       if (local->open_count && local->open_count == local->monitors &&
+           !(local->hw.flags & IEEE80211_HW_MONITOR_DURING_OPER) &&
+           local->ops->remove_interface) {
+               conf.if_id = -1;
+               conf.type = IEEE80211_IF_TYPE_MNTR;
+               conf.mac_addr = NULL;
+               local->ops->remove_interface(local_to_hw(local), &conf);
+       }
+}
+
+/* Check if running monitor interfaces should go to a "hard monitor" mode
+ * and switch them if necessary. */
+static void ieee80211_start_hard_monitor(struct ieee80211_local *local)
+{
+       struct ieee80211_if_init_conf conf;
+
+       if (local->open_count && local->open_count == local->monitors &&
+           !(local->hw.flags & IEEE80211_HW_MONITOR_DURING_OPER) &&
+           local->ops->add_interface) {
+               conf.if_id = -1;
+               conf.type = IEEE80211_IF_TYPE_MNTR;
+               conf.mac_addr = NULL;
+               local->ops->add_interface(local_to_hw(local), &conf);
+       }
+}
+
+static int ieee80211_open(struct net_device *dev)
+{
+       struct ieee80211_sub_if_data *sdata, *nsdata;
+       struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+       struct ieee80211_if_init_conf conf;
+       int res;
+
+       sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+       read_lock(&local->sub_if_lock);
+       list_for_each_entry(nsdata, &local->sub_if_list, list) {
+               struct net_device *ndev = nsdata->dev;
+
+               if (ndev != dev && ndev != local->mdev && netif_running(ndev) &&
+                   compare_ether_addr(dev->dev_addr, ndev->dev_addr) == 0 &&
+                   !identical_mac_addr_allowed(sdata->type, nsdata->type)) {
+                       read_unlock(&local->sub_if_lock);
+                       return -ENOTUNIQ;
+               }
+       }
+       read_unlock(&local->sub_if_lock);
+
+       if (sdata->type == IEEE80211_IF_TYPE_WDS &&
+           is_zero_ether_addr(sdata->u.wds.remote_addr))
+               return -ENOLINK;
+
+       if (sdata->type == IEEE80211_IF_TYPE_MNTR && local->open_count &&
+           !(local->hw.flags & IEEE80211_HW_MONITOR_DURING_OPER)) {
+               /* run the interface in a "soft monitor" mode */
+               local->monitors++;
+               local->open_count++;
+               local->hw.conf.flags |= IEEE80211_CONF_RADIOTAP;
+               return 0;
+       }
+       ieee80211_start_soft_monitor(local);
+
+       if (local->ops->add_interface) {
+               conf.if_id = dev->ifindex;
+               conf.type = sdata->type;
+               conf.mac_addr = dev->dev_addr;
+               res = local->ops->add_interface(local_to_hw(local), &conf);
+               if (res) {
+                       if (sdata->type == IEEE80211_IF_TYPE_MNTR)
+                               ieee80211_start_hard_monitor(local);
+                       return res;
+               }
+       } else {
+               if (sdata->type != IEEE80211_IF_TYPE_STA)
+                       return -EOPNOTSUPP;
+               if (local->open_count > 0)
+                       return -ENOBUFS;
+       }
+
+       if (local->open_count == 0) {
+               res = 0;
+               tasklet_enable(&local->tx_pending_tasklet);
+               tasklet_enable(&local->tasklet);
+               if (local->ops->open)
+                       res = local->ops->open(local_to_hw(local));
+               if (res == 0) {
+                       res = dev_open(local->mdev);
+                       if (res) {
+                               if (local->ops->stop)
+                                       local->ops->stop(local_to_hw(local));
+                       } else {
+                               res = ieee80211_hw_config(local);
+                               if (res && local->ops->stop)
+                                       local->ops->stop(local_to_hw(local));
+                               else if (!res && local->apdev)
+                                       dev_open(local->apdev);
+                       }
+               }
+               if (res) {
+                       if (local->ops->remove_interface)
+                               local->ops->remove_interface(local_to_hw(local),
+                                                           &conf);
+                       return res;
+               }
+       }
+       local->open_count++;
+
+       if (sdata->type == IEEE80211_IF_TYPE_MNTR) {
+               local->monitors++;
+               local->hw.conf.flags |= IEEE80211_CONF_RADIOTAP;
+       } else
+               ieee80211_if_config(dev);
+
+       if (sdata->type == IEEE80211_IF_TYPE_STA &&
+           !local->user_space_mlme)
+               netif_carrier_off(dev);
+       else
+               netif_carrier_on(dev);
+
+       netif_start_queue(dev);
+       return 0;
+}
+
+
+static int ieee80211_stop(struct net_device *dev)
+{
+       struct ieee80211_sub_if_data *sdata;
+       struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+
+       sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+       if (sdata->type == IEEE80211_IF_TYPE_MNTR &&
+           local->open_count > 1 &&
+           !(local->hw.flags & IEEE80211_HW_MONITOR_DURING_OPER)) {
+               /* remove "soft monitor" interface */
+               local->open_count--;
+               local->monitors--;
+               if (!local->monitors)
+                       local->hw.conf.flags &= ~IEEE80211_CONF_RADIOTAP;
+               return 0;
+       }
+
+       netif_stop_queue(dev);
+       ieee80211_if_shutdown(dev);
+
+       if (sdata->type == IEEE80211_IF_TYPE_MNTR) {
+               local->monitors--;
+               if (!local->monitors)
+                       local->hw.conf.flags &= ~IEEE80211_CONF_RADIOTAP;
+       }
+
+       local->open_count--;
+       if (local->open_count == 0) {
+               if (netif_running(local->mdev))
+                       dev_close(local->mdev);
+               if (local->apdev)
+                       dev_close(local->apdev);
+               if (local->ops->stop)
+                       local->ops->stop(local_to_hw(local));
+               tasklet_disable(&local->tx_pending_tasklet);
+               tasklet_disable(&local->tasklet);
+       }
+       if (local->ops->remove_interface) {
+               struct ieee80211_if_init_conf conf;
+
+               conf.if_id = dev->ifindex;
+               conf.type = sdata->type;
+               conf.mac_addr = dev->dev_addr;
+               local->ops->remove_interface(local_to_hw(local), &conf);
+       }
+
+       ieee80211_start_hard_monitor(local);
+
+       return 0;
+}
+
+
+static int header_parse_80211(struct sk_buff *skb, unsigned char *haddr)
+{
+       memcpy(haddr, skb_mac_header(skb) + 10, ETH_ALEN); /* addr2 */
+       return ETH_ALEN;
+}
+
+static inline int ieee80211_bssid_match(const u8 *raddr, const u8 *addr)
+{
+       return compare_ether_addr(raddr, addr) == 0 ||
+              is_broadcast_ether_addr(raddr);
+}
+
+
+inline static unsigned int calc_pad_len(unsigned int len)
+{
+       return ((4 - len) & 0x3);
+}
+
+static ieee80211_txrx_result
+ieee80211_rx_h_data_agg(struct ieee80211_txrx_data *rx)
+{
+       struct net_device *dev = rx->dev;
+       struct ieee80211_local *local = rx->local;
+       u16 fc, hdrlen, ethertype;
+       u8 *payload;
+       struct sk_buff *skb = rx->skb, *skb2, *frame;
+       struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+       const struct ethhdr* eth;
+       int remaining;
+
+       fc = rx->fc;
+       if (unlikely((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA))
+               return TXRX_CONTINUE;
+
+       if (unlikely(!WLAN_FC_DATA_PRESENT(fc)))
+               return TXRX_DROP;
+
+       if (!rx->u.rx.is_agg_frame)
+               return TXRX_CONTINUE;
+
+       hdrlen = ieee80211_get_hdrlen(fc);
+
+       payload = skb->data + hdrlen;
+
+       if (unlikely((skb->len - hdrlen) < 8)) {
+               if (net_ratelimit())
+                       printk(KERN_DEBUG "%s: RX too short data frame "
+                              "payload\n", dev->name);
+               return TXRX_DROP;
+       }
+
+       ethertype = (payload[6] << 8) | payload[7];
+
+       if (likely((compare_ether_addr(payload, rfc1042_header) == 0 &&
+                   ethertype != ETH_P_AARP && ethertype != ETH_P_IPX) ||
+                  compare_ether_addr(payload, bridge_tunnel_header) == 0)) {
+               /* remove RFC1042 or Bridge-Tunnel encapsulation and
+               * replace EtherType */
+               eth = (struct ethhdr*) (skb->data + hdrlen + 6);
+               remaining = skb->len - (hdrlen + 6);
+       } else {
+               eth = (struct ethhdr*) (skb->data + hdrlen);
+               remaining = skb->len - hdrlen;
+       }
+
+       while ((u8*)eth < skb->data + skb->len) {
+               u8 padding;
+               unsigned int subframe_len = sizeof(struct ethhdr) +
+                                                  ntohs(eth->h_proto);
+
+               padding = calc_pad_len(subframe_len);
+               /* the last MSDU has no padding */
+               if (subframe_len > remaining)
+                       return TXRX_DROP;
+
+               frame = dev_alloc_skb(local->hw.extra_tx_headroom +
+                                     subframe_len);
+
+               if (frame == NULL)
+                       return TXRX_DROP;
+
+               memcpy(skb_put(frame, subframe_len), (u8*)eth, subframe_len);
+               skb_set_mac_header(frame, 0);
+               skb2 = NULL;
+
+               sdata->stats.rx_packets++;
+               sdata->stats.rx_bytes += frame->len;
+
+               if (local->bridge_packets &&
+                   (sdata->type == IEEE80211_IF_TYPE_AP ||
+                    sdata->type == IEEE80211_IF_TYPE_VLAN) &&
+                    rx->u.rx.ra_match) {
+                       if (is_multicast_ether_addr(frame->data)) {
+                               /* send multicast frames both to higher layers
+                               * in local net stack and back to the wireless
+                               * media */
+                               skb2 = skb_copy(frame, GFP_ATOMIC);
+                               if (!skb2)
+                                       printk(KERN_DEBUG "%s: failed to clone"
+                                              " multicast frame\n", dev->name);
+                       } else {
+                               struct sta_info *dsta;
+
+                               dsta = sta_info_get(local, frame->data);
+                               if (dsta && !dsta->dev)
+                                       printk(KERN_DEBUG "Station with null "
+                                              "dev structure!\n");
+                               else if (dsta && dsta->dev == dev) {
+                                       /* Destination station is associated
+                                       * to this AP, so send the frame
+                                       * directly to it and do not pass
+                                       * the frame to local net stack.
+                                       */
+                                       skb2 = frame;
+                                       frame = NULL;
+                               }
+                               if (dsta)
+                                       sta_info_put(dsta);
+                       }
+               }
+               if (frame) {
+                       /* deliver to local stack */
+                       frame->protocol = eth_type_trans(frame, dev);
+                       frame->priority = skb->priority;
+                       frame->dev = dev;
+                       netif_rx(frame);
+               }
+
+               if (skb2) {
+                       /* send to wireless media */
+                       skb2->protocol = __constant_htons(ETH_P_802_3);
+                       skb_set_network_header(skb2, 0);
+                       skb_set_mac_header(skb2, 0);
+                       skb2->priority = skb->priority;
+                       skb2->dev = dev;
+                       dev_queue_xmit(skb2);
+               }
+
+               eth = (struct ethhdr*)((u8*)eth + subframe_len + padding);
+
+               remaining -= (subframe_len + padding);
+       }
+
+       dev_kfree_skb(skb);
+       return TXRX_QUEUED;
+}
+
+static ieee80211_txrx_result
+ieee80211_rx_h_data(struct ieee80211_txrx_data *rx)
+{
+       struct net_device *dev = rx->dev;
+       struct ieee80211_local *local = rx->local;
+       struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) rx->skb->data;
+       u16 fc, hdrlen, ethertype;
+       u8 *payload;
+       u8 dst[ETH_ALEN];
+       u8 src[ETH_ALEN];
+       struct sk_buff *skb = rx->skb, *skb2;
+       struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+       fc = rx->fc;
+       if (unlikely((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA))
+               return TXRX_CONTINUE;
+
+       if (unlikely(!WLAN_FC_DATA_PRESENT(fc)))
+               return TXRX_DROP;
+
+       hdrlen = ieee80211_get_hdrlen(fc);
+
+       /* convert IEEE 802.11 header + possible LLC headers into Ethernet
+        * header
+        * IEEE 802.11 address fields:
+        * ToDS FromDS Addr1 Addr2 Addr3 Addr4
+        *   0     0   DA    SA    BSSID n/a
+        *   0     1   DA    BSSID SA    n/a
+        *   1     0   BSSID SA    DA    n/a
+        *   1     1   RA    TA    DA    SA
+        */
+
+       switch (fc & (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) {
+       case IEEE80211_FCTL_TODS:
+               /* BSSID SA DA */
+               memcpy(dst, hdr->addr3, ETH_ALEN);
+               memcpy(src, hdr->addr2, ETH_ALEN);
+
+               if (unlikely(sdata->type != IEEE80211_IF_TYPE_AP &&
+                            sdata->type != IEEE80211_IF_TYPE_VLAN)) {
+                       printk(KERN_DEBUG "%s: dropped ToDS frame (BSSID="
+                              MAC_FMT " SA=" MAC_FMT " DA=" MAC_FMT ")\n",
+                              dev->name, MAC_ARG(hdr->addr1),
+                              MAC_ARG(hdr->addr2), MAC_ARG(hdr->addr3));
+                       return TXRX_DROP;
+               }
+               break;
+       case (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS):
+               /* RA TA DA SA */
+               memcpy(dst, hdr->addr3, ETH_ALEN);
+               memcpy(src, hdr->addr4, ETH_ALEN);
+
+               if (unlikely(sdata->type != IEEE80211_IF_TYPE_WDS)) {
+                       printk(KERN_DEBUG "%s: dropped FromDS&ToDS frame (RA="
+                              MAC_FMT " TA=" MAC_FMT " DA=" MAC_FMT " SA="
+                              MAC_FMT ")\n",
+                              rx->dev->name, MAC_ARG(hdr->addr1),
+                              MAC_ARG(hdr->addr2), MAC_ARG(hdr->addr3),
+                              MAC_ARG(hdr->addr4));
+                       return TXRX_DROP;
+               }
+               break;
+       case IEEE80211_FCTL_FROMDS:
+               /* DA BSSID SA */
+               memcpy(dst, hdr->addr1, ETH_ALEN);
+               memcpy(src, hdr->addr3, ETH_ALEN);
+
+               if (sdata->type != IEEE80211_IF_TYPE_STA) {
+                       return TXRX_DROP;
+               }
+               break;
+       case 0:
+               /* DA SA BSSID */
+               memcpy(dst, hdr->addr1, ETH_ALEN);
+               memcpy(src, hdr->addr2, ETH_ALEN);
+
+               if (sdata->type != IEEE80211_IF_TYPE_IBSS) {
+                       if (net_ratelimit()) {
+                               printk(KERN_DEBUG "%s: dropped IBSS frame (DA="
+                                      MAC_FMT " SA=" MAC_FMT " BSSID=" MAC_FMT
+                                      ")\n",
+                                      dev->name, MAC_ARG(hdr->addr1),
+                                      MAC_ARG(hdr->addr2),
+                                      MAC_ARG(hdr->addr3));
+                       }
+                       return TXRX_DROP;
+               }
+               break;
+       }
+
+       payload = skb->data + hdrlen;
+
+       if (unlikely(skb->len - hdrlen < 8)) {
+               if (net_ratelimit()) {
+                       printk(KERN_DEBUG "%s: RX too short data frame "
+                              "payload\n", dev->name);
+               }
+               return TXRX_DROP;
+       }
+
+       ethertype = (payload[6] << 8) | payload[7];
+
+       if (likely((compare_ether_addr(payload, rfc1042_header) == 0 &&
+                   ethertype != ETH_P_AARP && ethertype != ETH_P_IPX) ||
+                  compare_ether_addr(payload, bridge_tunnel_header) == 0)) {
+               /* remove RFC1042 or Bridge-Tunnel encapsulation and
+                * replace EtherType */
+               skb_pull(skb, hdrlen + 6);
+               memcpy(skb_push(skb, ETH_ALEN), src, ETH_ALEN);
+               memcpy(skb_push(skb, ETH_ALEN), dst, ETH_ALEN);
+       } else {
+               struct ethhdr *ehdr;
+               __be16 len;
+               skb_pull(skb, hdrlen);
+               len = htons(skb->len);
+               ehdr = (struct ethhdr *) skb_push(skb, sizeof(struct ethhdr));
+               memcpy(ehdr->h_dest, dst, ETH_ALEN);
+               memcpy(ehdr->h_source, src, ETH_ALEN);
+               ehdr->h_proto = len;
+       }
+       skb->dev = dev;
+
+       skb2 = NULL;
+
+       sdata->stats.rx_packets++;
+       sdata->stats.rx_bytes += skb->len;
+
+       if (local->bridge_packets && (sdata->type == IEEE80211_IF_TYPE_AP
+           || sdata->type == IEEE80211_IF_TYPE_VLAN) && rx->u.rx.ra_match) {
+               if (is_multicast_ether_addr(skb->data)) {
+                       /* send multicast frames both to higher layers in
+                        * local net stack and back to the wireless media */
+                       skb2 = skb_copy(skb, GFP_ATOMIC);
+                       if (!skb2)
+                               printk(KERN_DEBUG "%s: failed to clone "
+                                      "multicast frame\n", dev->name);
+               } else {
+                       struct sta_info *dsta;
+                       dsta = sta_info_get(local, skb->data);
+                       if (dsta && !dsta->dev) {
+                               printk(KERN_DEBUG "Station with null dev "
+                                      "structure!\n");
+                       } else if (dsta && dsta->dev == dev) {
+                               /* Destination station is associated to this
+                                * AP, so send the frame directly to it and
+                                * do not pass the frame to local net stack.
+                                */
+                               skb2 = skb;
+                               skb = NULL;
+                       }
+                       if (dsta)
+                               sta_info_put(dsta);
+               }
+       }
+
+       if (skb) {
+               /* deliver to local stack */
+               skb->protocol = eth_type_trans(skb, dev);
+               memset(skb->cb, 0, sizeof(skb->cb));
+               netif_rx(skb);
+       }
+
+       if (skb2) {
+               /* send to wireless media */
+               skb2->protocol = __constant_htons(ETH_P_802_3);
+               skb_set_network_header(skb2, 0);
+               skb_set_mac_header(skb2, 0);
+               dev_queue_xmit(skb2);
+       }
+
+       return TXRX_QUEUED;
+}
+
+
+static struct ieee80211_rate *
+ieee80211_get_rate(struct ieee80211_local *local, int phymode, int hw_rate)
+{
+       struct ieee80211_hw_mode *mode;
+       int r;
+
+       list_for_each_entry(mode, &local->modes_list, list) {
+               if (mode->mode != phymode)
+                       continue;
+               for (r = 0; r < mode->num_rates; r++) {
+                       struct ieee80211_rate *rate = &mode->rates[r];
+                       if (rate->val == hw_rate ||
+                           (rate->flags & IEEE80211_RATE_PREAMBLE2 &&
+                            rate->val2 == hw_rate))
+                               return rate;
+               }
+       }
+
+       return NULL;
+}
+
+static void
+ieee80211_fill_frame_info(struct ieee80211_local *local,
+                         struct ieee80211_frame_info *fi,
+                         struct ieee80211_rx_status *status)
+{
+       if (status) {
+               struct timespec ts;
+               struct ieee80211_rate *rate;
+
+               jiffies_to_timespec(jiffies, &ts);
+               fi->hosttime = cpu_to_be64((u64) ts.tv_sec * 1000000 +
+                                          ts.tv_nsec / 1000);
+               fi->mactime = cpu_to_be64(status->mactime);
+               switch (status->phymode) {
+               case MODE_IEEE80211A:
+                       fi->phytype = htonl(ieee80211_phytype_ofdm_dot11_a);
+                       break;
+               case MODE_IEEE80211B:
+                       fi->phytype = htonl(ieee80211_phytype_dsss_dot11_b);
+                       break;
+               case MODE_IEEE80211G:
+                       fi->phytype = htonl(ieee80211_phytype_pbcc_dot11_g);
+                       break;
+               case MODE_ATHEROS_TURBO:
+                       fi->phytype =
+                               htonl(ieee80211_phytype_dsss_dot11_turbo);
+                       break;
+               default:
+                       fi->phytype = htonl(0xAAAAAAAA);
+                       break;
+               }
+               fi->channel = htonl(status->channel);
+               rate = ieee80211_get_rate(local, status->phymode,
+                                         status->rate);
+               if (rate) {
+                       fi->datarate = htonl(rate->rate);
+                       if (rate->flags & IEEE80211_RATE_PREAMBLE2) {
+                               if (status->rate == rate->val)
+                                       fi->preamble = htonl(2); /* long */
+                               else if (status->rate == rate->val2)
+                                       fi->preamble = htonl(1); /* short */
+                       } else
+                               fi->preamble = htonl(0);
+               } else {
+                       fi->datarate = htonl(0);
+                       fi->preamble = htonl(0);
+               }
+
+               fi->antenna = htonl(status->antenna);
+               fi->priority = htonl(0xffffffff); /* no clue */
+               fi->ssi_type = htonl(ieee80211_ssi_raw);
+               fi->ssi_signal = htonl(status->ssi);
+               fi->ssi_noise = 0x00000000;
+               fi->encoding = 0;
+       } else {
+               /* clear everything because we really don't know.
+                * the msg_type field isn't present on monitor frames
+                * so we don't know whether it will be present or not,
+                * but it's ok to not clear it since it'll be assigned
+                * anyway */
+               memset(fi, 0, sizeof(*fi) - sizeof(fi->msg_type));
+
+               fi->ssi_type = htonl(ieee80211_ssi_none);
+       }
+       fi->version = htonl(IEEE80211_FI_VERSION);
+       fi->length = cpu_to_be32(sizeof(*fi) - sizeof(fi->msg_type));
+}
+
+/* this routine is actually not just for this, but also
+ * for pushing fake 'management' frames into userspace.
+ * it shall be replaced by a netlink-based system. */
+void
+ieee80211_rx_mgmt(struct ieee80211_local *local, struct sk_buff *skb,
+                 struct ieee80211_rx_status *status, u32 msg_type)
+{
+       struct ieee80211_frame_info *fi;
+       const size_t hlen = sizeof(struct ieee80211_frame_info);
+       struct ieee80211_sub_if_data *sdata;
+
+       skb->dev = local->apdev;
+
+       sdata = IEEE80211_DEV_TO_SUB_IF(local->apdev);
+
+       if (skb_headroom(skb) < hlen) {
+               I802_DEBUG_INC(local->rx_expand_skb_head);
+               if (pskb_expand_head(skb, hlen, 0, GFP_ATOMIC)) {
+                       dev_kfree_skb(skb);
+                       return;
+               }
+       }
+
+       fi = (struct ieee80211_frame_info *) skb_push(skb, hlen);
+
+       ieee80211_fill_frame_info(local, fi, status);
+       fi->msg_type = htonl(msg_type);
+
+       sdata->stats.rx_packets++;
+       sdata->stats.rx_bytes += skb->len;
+
+       skb_set_mac_header(skb, 0);
+       skb->ip_summed = CHECKSUM_UNNECESSARY;
+       skb->pkt_type = PACKET_OTHERHOST;
+       skb->protocol = htons(ETH_P_802_2);
+       memset(skb->cb, 0, sizeof(skb->cb));
+       netif_rx(skb);
+}
+
+static void
+ieee80211_rx_monitor(struct net_device *dev, struct sk_buff *skb,
+                    struct ieee80211_rx_status *status)
+{
+       struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+       struct ieee80211_sub_if_data *sdata;
+       struct ieee80211_rate *rate;
+       struct ieee80211_rtap_hdr {
+               struct ieee80211_radiotap_header hdr;
+               u8 flags;
+               u8 rate;
+               __le16 chan_freq;
+               __le16 chan_flags;
+               u8 antsignal;
+       } __attribute__ ((packed)) *rthdr;
+
+       skb->dev = dev;
+
+       sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+       if (status->flag & RX_FLAG_RADIOTAP)
+               goto out;
+
+       if (skb_headroom(skb) < sizeof(*rthdr)) {
+               I802_DEBUG_INC(local->rx_expand_skb_head);
+               if (pskb_expand_head(skb, sizeof(*rthdr), 0, GFP_ATOMIC)) {
+                       dev_kfree_skb(skb);
+                       return;
+               }
+       }
+
+       rthdr = (struct ieee80211_rtap_hdr *) skb_push(skb, sizeof(*rthdr));
+       memset(rthdr, 0, sizeof(*rthdr));
+       rthdr->hdr.it_len = cpu_to_le16(sizeof(*rthdr));
+       rthdr->hdr.it_present =
+               cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) |
+                           (1 << IEEE80211_RADIOTAP_RATE) |
+                           (1 << IEEE80211_RADIOTAP_CHANNEL) |
+                           (1 << IEEE80211_RADIOTAP_DB_ANTSIGNAL));
+       rthdr->flags = local->hw.flags & IEEE80211_HW_RX_INCLUDES_FCS ?
+                      IEEE80211_RADIOTAP_F_FCS : 0;
+       rate = ieee80211_get_rate(local, status->phymode, status->rate);
+       if (rate)
+               rthdr->rate = rate->rate / 5;
+       rthdr->chan_freq = cpu_to_le16(status->freq);
+       rthdr->chan_flags =
+               status->phymode == MODE_IEEE80211A ?
+               cpu_to_le16(IEEE80211_CHAN_OFDM | IEEE80211_CHAN_5GHZ) :
+               cpu_to_le16(IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ);
+       rthdr->antsignal = status->ssi;
+
+ out:
+       sdata->stats.rx_packets++;
+       sdata->stats.rx_bytes += skb->len;
+
+       skb_set_mac_header(skb, 0);
+       skb->ip_summed = CHECKSUM_UNNECESSARY;
+       skb->pkt_type = PACKET_OTHERHOST;
+       skb->protocol = htons(ETH_P_802_2);
+       memset(skb->cb, 0, sizeof(skb->cb));
+       netif_rx(skb);
+}
+
+int ieee80211_radar_status(struct ieee80211_hw *hw, int channel,
+                          int radar, int radar_type)
+{
+       struct sk_buff *skb;
+       struct ieee80211_radar_info *msg;
+       struct ieee80211_local *local = hw_to_local(hw);
+
+       if (!local->apdev)
+               return 0;
+
+       skb = dev_alloc_skb(sizeof(struct ieee80211_frame_info) +
+                           sizeof(struct ieee80211_radar_info));
+
+       if (!skb)
+               return -ENOMEM;
+       skb_reserve(skb, sizeof(struct ieee80211_frame_info));
+
+       msg = (struct ieee80211_radar_info *)
+               skb_put(skb, sizeof(struct ieee80211_radar_info));
+       msg->channel = channel;
+       msg->radar = radar;
+       msg->radar_type = radar_type;
+
+       ieee80211_rx_mgmt(local, skb, NULL, ieee80211_msg_radar);
+       return 0;
+}
+EXPORT_SYMBOL(ieee80211_radar_status);
+
+int ieee80211_set_aid_for_sta(struct ieee80211_hw *hw, u8 *peer_address,
+                             u16 aid)
+{
+       struct sk_buff *skb;
+       struct ieee80211_msg_set_aid_for_sta *msg;
+       struct ieee80211_local *local = hw_to_local(hw);
+
+       /* unlikely because if this event only happens for APs,
+        * which require an open ap device. */
+       if (unlikely(!local->apdev))
+               return 0;
+
+       skb = dev_alloc_skb(sizeof(struct ieee80211_frame_info) +
+                           sizeof(struct ieee80211_msg_set_aid_for_sta));
+
+       if (!skb)
+               return -ENOMEM;
+       skb_reserve(skb, sizeof(struct ieee80211_frame_info));
+
+       msg = (struct ieee80211_msg_set_aid_for_sta *)
+               skb_put(skb, sizeof(struct ieee80211_msg_set_aid_for_sta));
+       memcpy(msg->sta_address, peer_address, ETH_ALEN);
+       msg->aid = aid;
+
+       ieee80211_rx_mgmt(local, skb, NULL, ieee80211_msg_set_aid_for_sta);
+       return 0;
+}
+EXPORT_SYMBOL(ieee80211_set_aid_for_sta);
+
+static void ap_sta_ps_start(struct net_device *dev, struct sta_info *sta)
+{
+       struct ieee80211_sub_if_data *sdata;
+       sdata = IEEE80211_DEV_TO_SUB_IF(sta->dev);
+
+       if (sdata->bss)
+               atomic_inc(&sdata->bss->num_sta_ps);
+       sta->flags |= WLAN_STA_PS;
+       sta->pspoll = 0;
+#ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG
+       printk(KERN_DEBUG "%s: STA " MAC_FMT " aid %d enters power "
+              "save mode\n", dev->name, MAC_ARG(sta->addr), sta->aid);
+#endif /* CONFIG_MAC80211_VERBOSE_PS_DEBUG */
+}
+
+
+static int ap_sta_ps_end(struct net_device *dev, struct sta_info *sta)
+{
+       struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+       struct sk_buff *skb;
+       int sent = 0;
+       struct ieee80211_sub_if_data *sdata;
+       struct ieee80211_tx_packet_data *pkt_data;
+
+       sdata = IEEE80211_DEV_TO_SUB_IF(sta->dev);
+       if (sdata->bss)
+               atomic_dec(&sdata->bss->num_sta_ps);
+       sta->flags &= ~(WLAN_STA_PS | WLAN_STA_TIM);
+       sta->pspoll = 0;
+       if (!skb_queue_empty(&sta->ps_tx_buf)) {
+               if (local->ops->set_tim)
+                       local->ops->set_tim(local_to_hw(local), sta->aid, 0);
+               if (sdata->bss)
+                       bss_tim_clear(local, sdata->bss, sta->aid);
+       }
+#ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG
+       printk(KERN_DEBUG "%s: STA " MAC_FMT " aid %d exits power "
+              "save mode\n", dev->name, MAC_ARG(sta->addr), sta->aid);
+#endif /* CONFIG_MAC80211_VERBOSE_PS_DEBUG */
+       /* Send all buffered frames to the station */
+       while ((skb = skb_dequeue(&sta->tx_filtered)) != NULL) {
+               pkt_data = (struct ieee80211_tx_packet_data *) skb->cb;
+               sent++;
+               pkt_data->requeue = 1;
+               dev_queue_xmit(skb);
+       }
+       while ((skb = skb_dequeue(&sta->ps_tx_buf)) != NULL) {
+               pkt_data = (struct ieee80211_tx_packet_data *) skb->cb;
+               local->total_ps_buffered--;
+               sent++;
+#ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG
+               printk(KERN_DEBUG "%s: STA " MAC_FMT " aid %d send PS frame "
+                      "since STA not sleeping anymore\n", dev->name,
+                      MAC_ARG(sta->addr), sta->aid);
+#endif /* CONFIG_MAC80211_VERBOSE_PS_DEBUG */
+               pkt_data->requeue = 1;
+               dev_queue_xmit(skb);
+       }
+
+       return sent;
+}
+
+
+static ieee80211_txrx_result
+ieee80211_rx_h_ps_poll(struct ieee80211_txrx_data *rx)
+{
+       struct sk_buff *skb;
+       int no_pending_pkts;
+
+       if (likely(!rx->sta ||
+                  (rx->fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_CTL ||
+                  (rx->fc & IEEE80211_FCTL_STYPE) != IEEE80211_STYPE_PSPOLL ||
+                  !rx->u.rx.ra_match))
+               return TXRX_CONTINUE;
+
+       skb = skb_dequeue(&rx->sta->tx_filtered);
+       if (!skb) {
+               skb = skb_dequeue(&rx->sta->ps_tx_buf);
+               if (skb)
+                       rx->local->total_ps_buffered--;
+       }
+       no_pending_pkts = skb_queue_empty(&rx->sta->tx_filtered) &&
+               skb_queue_empty(&rx->sta->ps_tx_buf);
+
+       if (skb) {
+               struct ieee80211_hdr *hdr =
+                       (struct ieee80211_hdr *) skb->data;
+
+               /* tell TX path to send one frame even though the STA may
+                * still remain is PS mode after this frame exchange */
+               rx->sta->pspoll = 1;
+
+#ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG
+               printk(KERN_DEBUG "STA " MAC_FMT " aid %d: PS Poll (entries "
+                      "after %d)\n",
+                      MAC_ARG(rx->sta->addr), rx->sta->aid,
+                      skb_queue_len(&rx->sta->ps_tx_buf));
+#endif /* CONFIG_MAC80211_VERBOSE_PS_DEBUG */
+
+               /* Use MoreData flag to indicate whether there are more
+                * buffered frames for this STA */
+               if (no_pending_pkts) {
+                       hdr->frame_control &= cpu_to_le16(~IEEE80211_FCTL_MOREDATA);
+                       rx->sta->flags &= ~WLAN_STA_TIM;
+               } else
+                       hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_MOREDATA);
+
+               dev_queue_xmit(skb);
+
+               if (no_pending_pkts) {
+                       if (rx->local->ops->set_tim)
+                               rx->local->ops->set_tim(local_to_hw(rx->local),
+                                                      rx->sta->aid, 0);
+                       if (rx->sdata->bss)
+                               bss_tim_clear(rx->local, rx->sdata->bss, rx->sta->aid);
+               }
+#ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG
+       } else if (!rx->u.rx.sent_ps_buffered) {
+               printk(KERN_DEBUG "%s: STA " MAC_FMT " sent PS Poll even "
+                      "though there is no buffered frames for it\n",
+                      rx->dev->name, MAC_ARG(rx->sta->addr));
+#endif /* CONFIG_MAC80211_VERBOSE_PS_DEBUG */
+
+       }
+
+       /* Free PS Poll skb here instead of returning TXRX_DROP that would
+        * count as an dropped frame. */
+       dev_kfree_skb(rx->skb);
+
+       return TXRX_QUEUED;
+}
+
+
+static inline struct ieee80211_fragment_entry *
+ieee80211_reassemble_add(struct ieee80211_sub_if_data *sdata,
+                        unsigned int frag, unsigned int seq, int rx_queue,
+                        struct sk_buff **skb)
+{
+       struct ieee80211_fragment_entry *entry;
+       int idx;
+
+       idx = sdata->fragment_next;
+       entry = &sdata->fragments[sdata->fragment_next++];
+       if (sdata->fragment_next >= IEEE80211_FRAGMENT_MAX)
+               sdata->fragment_next = 0;
+
+       if (!skb_queue_empty(&entry->skb_list)) {
+#ifdef CONFIG_MAC80211_DEBUG
+               struct ieee80211_hdr *hdr =
+                       (struct ieee80211_hdr *) entry->skb_list.next->data;
+               printk(KERN_DEBUG "%s: RX reassembly removed oldest "
+                      "fragment entry (idx=%d age=%lu seq=%d last_frag=%d "
+                      "addr1=" MAC_FMT " addr2=" MAC_FMT "\n",
+                      sdata->dev->name, idx,
+                      jiffies - entry->first_frag_time, entry->seq,
+                      entry->last_frag, MAC_ARG(hdr->addr1),
+                      MAC_ARG(hdr->addr2));
+#endif /* CONFIG_MAC80211_DEBUG */
+               __skb_queue_purge(&entry->skb_list);
+       }
+
+       __skb_queue_tail(&entry->skb_list, *skb); /* no need for locking */
+       *skb = NULL;
+       entry->first_frag_time = jiffies;
+       entry->seq = seq;
+       entry->rx_queue = rx_queue;
+       entry->last_frag = frag;
+       entry->ccmp = 0;
+       entry->extra_len = 0;
+
+       return entry;
+}
+
+
+static inline struct ieee80211_fragment_entry *
+ieee80211_reassemble_find(struct ieee80211_sub_if_data *sdata,
+                         u16 fc, unsigned int frag, unsigned int seq,
+                         int rx_queue, struct ieee80211_hdr *hdr)
+{
+       struct ieee80211_fragment_entry *entry;
+       int i, idx;
+
+       idx = sdata->fragment_next;
+       for (i = 0; i < IEEE80211_FRAGMENT_MAX; i++) {
+               struct ieee80211_hdr *f_hdr;
+               u16 f_fc;
+
+               idx--;
+               if (idx < 0)
+                       idx = IEEE80211_FRAGMENT_MAX - 1;
+
+               entry = &sdata->fragments[idx];
+               if (skb_queue_empty(&entry->skb_list) || entry->seq != seq ||
+                   entry->rx_queue != rx_queue ||
+                   entry->last_frag + 1 != frag)
+                       continue;
+
+               f_hdr = (struct ieee80211_hdr *) entry->skb_list.next->data;
+               f_fc = le16_to_cpu(f_hdr->frame_control);
+
+               if ((fc & IEEE80211_FCTL_FTYPE) != (f_fc & IEEE80211_FCTL_FTYPE) ||
+                   compare_ether_addr(hdr->addr1, f_hdr->addr1) != 0 ||
+                   compare_ether_addr(hdr->addr2, f_hdr->addr2) != 0)
+                       continue;
+
+               if (entry->first_frag_time + 2 * HZ < jiffies) {
+                       __skb_queue_purge(&entry->skb_list);
+                       continue;
+               }
+               return entry;
+       }
+
+       return NULL;
+}
+
+
+static ieee80211_txrx_result
+ieee80211_rx_h_defragment(struct ieee80211_txrx_data *rx)
+{
+       struct ieee80211_hdr *hdr;
+       u16 sc;
+       unsigned int frag, seq;
+       struct ieee80211_fragment_entry *entry;
+       struct sk_buff *skb;
+
+       hdr = (struct ieee80211_hdr *) rx->skb->data;
+       sc = le16_to_cpu(hdr->seq_ctrl);
+       frag = sc & IEEE80211_SCTL_FRAG;
+
+       if (likely((!(rx->fc & IEEE80211_FCTL_MOREFRAGS) && frag == 0) ||
+                  (rx->skb)->len < 24 ||
+                  is_multicast_ether_addr(hdr->addr1))) {
+               /* not fragmented */
+               goto out;
+       }
+       I802_DEBUG_INC(rx->local->rx_handlers_fragments);
+
+       seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
+
+       if (frag == 0) {
+               /* This is the first fragment of a new frame. */
+               entry = ieee80211_reassemble_add(rx->sdata, frag, seq,
+                                                rx->u.rx.queue, &(rx->skb));
+               if (rx->key && rx->key->alg == ALG_CCMP &&
+                   (rx->fc & IEEE80211_FCTL_PROTECTED)) {
+                       /* Store CCMP PN so that we can verify that the next
+                        * fragment has a sequential PN value. */
+                       entry->ccmp = 1;
+                       memcpy(entry->last_pn,
+                              rx->key->u.ccmp.rx_pn[rx->u.rx.queue],
+                              CCMP_PN_LEN);
+               }
+               return TXRX_QUEUED;
+       }
+
+       /* This is a fragment for a frame that should already be pending in
+        * fragment cache. Add this fragment to the end of the pending entry.
+        */
+       entry = ieee80211_reassemble_find(rx->sdata, rx->fc, frag, seq,
+                                         rx->u.rx.queue, hdr);
+       if (!entry) {
+               I802_DEBUG_INC(rx->local->rx_handlers_drop_defrag);
+               return TXRX_DROP;
+       }
+
+       /* Verify that MPDUs within one MSDU have sequential PN values.
+        * (IEEE 802.11i, 8.3.3.4.5) */
+       if (entry->ccmp) {
+               int i;
+               u8 pn[CCMP_PN_LEN], *rpn;
+               if (!rx->key || rx->key->alg != ALG_CCMP)
+                       return TXRX_DROP;
+               memcpy(pn, entry->last_pn, CCMP_PN_LEN);
+               for (i = CCMP_PN_LEN - 1; i >= 0; i--) {
+                       pn[i]++;
+                       if (pn[i])
+                               break;
+               }
+               rpn = rx->key->u.ccmp.rx_pn[rx->u.rx.queue];
+               if (memcmp(pn, rpn, CCMP_PN_LEN) != 0) {
+                       printk(KERN_DEBUG "%s: defrag: CCMP PN not sequential"
+                              " A2=" MAC_FMT " PN=%02x%02x%02x%02x%02x%02x "
+                              "(expected %02x%02x%02x%02x%02x%02x)\n",
+                              rx->dev->name, MAC_ARG(hdr->addr2),
+                              rpn[0], rpn[1], rpn[2], rpn[3], rpn[4], rpn[5],
+                              pn[0], pn[1], pn[2], pn[3], pn[4], pn[5]);
+                       return TXRX_DROP;
+               }
+               memcpy(entry->last_pn, pn, CCMP_PN_LEN);
+       }
+
+       skb_pull(rx->skb, ieee80211_get_hdrlen(rx->fc));
+       __skb_queue_tail(&entry->skb_list, rx->skb);
+       entry->last_frag = frag;
+       entry->extra_len += rx->skb->len;
+       if (rx->fc & IEEE80211_FCTL_MOREFRAGS) {
+               rx->skb = NULL;
+               return TXRX_QUEUED;
+       }
+
+       rx->skb = __skb_dequeue(&entry->skb_list);
+       if (skb_tailroom(rx->skb) < entry->extra_len) {
+               I802_DEBUG_INC(rx->local->rx_expand_skb_head2);
+               if (unlikely(pskb_expand_head(rx->skb, 0, entry->extra_len,
+                                             GFP_ATOMIC))) {
+                       I802_DEBUG_INC(rx->local->rx_handlers_drop_defrag);
+                       __skb_queue_purge(&entry->skb_list);
+                       return TXRX_DROP;
+               }
+       }
+       while ((skb = __skb_dequeue(&entry->skb_list))) {
+               memcpy(skb_put(rx->skb, skb->len), skb->data, skb->len);
+               dev_kfree_skb(skb);
+       }
+
+       /* Complete frame has been reassembled - process it now */
+       rx->fragmented = 1;
+
+ out:
+       if (rx->sta)
+               rx->sta->rx_packets++;
+       if (is_multicast_ether_addr(hdr->addr1))
+               rx->local->dot11MulticastReceivedFrameCount++;
+       else
+               ieee80211_led_rx(rx->local);
+       return TXRX_CONTINUE;
+}
+
+
+static ieee80211_txrx_result
+ieee80211_rx_h_monitor(struct ieee80211_txrx_data *rx)
+{
+       if (rx->sdata->type == IEEE80211_IF_TYPE_MNTR) {
+               ieee80211_rx_monitor(rx->dev, rx->skb, rx->u.rx.status);
+               return TXRX_QUEUED;
+       }
+
+       if (rx->u.rx.status->flag & RX_FLAG_RADIOTAP)
+               skb_pull(rx->skb, ieee80211_get_radiotap_len(rx->skb));
+
+       return TXRX_CONTINUE;
+}
+
+
+static ieee80211_txrx_result
+ieee80211_rx_h_check(struct ieee80211_txrx_data *rx)
+{
+       struct ieee80211_hdr *hdr;
+       int always_sta_key;
+       hdr = (struct ieee80211_hdr *) rx->skb->data;
+
+       /* Drop duplicate 802.11 retransmissions (IEEE 802.11 Chap. 9.2.9) */
+       if (rx->sta && !is_multicast_ether_addr(hdr->addr1)) {
+               if (unlikely(rx->fc & IEEE80211_FCTL_RETRY &&
+                            rx->sta->last_seq_ctrl[rx->u.rx.queue] ==
+                            hdr->seq_ctrl)) {
+                       if (rx->u.rx.ra_match) {
+                               rx->local->dot11FrameDuplicateCount++;
+                               rx->sta->num_duplicates++;
+                       }
+                       return TXRX_DROP;
+               } else
+                       rx->sta->last_seq_ctrl[rx->u.rx.queue] = hdr->seq_ctrl;
+       }
+
+       if ((rx->local->hw.flags & IEEE80211_HW_RX_INCLUDES_FCS) &&
+           rx->skb->len > FCS_LEN)
+               skb_trim(rx->skb, rx->skb->len - FCS_LEN);
+
+       if (unlikely(rx->skb->len < 16)) {
+               I802_DEBUG_INC(rx->local->rx_handlers_drop_short);
+               return TXRX_DROP;
+       }
+
+       if (!rx->u.rx.ra_match)
+               rx->skb->pkt_type = PACKET_OTHERHOST;
+       else if (compare_ether_addr(rx->dev->dev_addr, hdr->addr1) == 0)
+               rx->skb->pkt_type = PACKET_HOST;
+       else if (is_multicast_ether_addr(hdr->addr1)) {
+               if (is_broadcast_ether_addr(hdr->addr1))
+                       rx->skb->pkt_type = PACKET_BROADCAST;
+               else
+                       rx->skb->pkt_type = PACKET_MULTICAST;
+       } else
+               rx->skb->pkt_type = PACKET_OTHERHOST;
+
+       /* Drop disallowed frame classes based on STA auth/assoc state;
+        * IEEE 802.11, Chap 5.5.
+        *
+        * 80211.o does filtering only based on association state, i.e., it
+        * drops Class 3 frames from not associated stations. hostapd sends
+        * deauth/disassoc frames when needed. In addition, hostapd is
+        * responsible for filtering on both auth and assoc states.
+        */
+       if (unlikely(((rx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA ||
+                     ((rx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_CTL &&
+                      (rx->fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_PSPOLL)) &&
+                    rx->sdata->type != IEEE80211_IF_TYPE_IBSS &&
+                    (!rx->sta || !(rx->sta->flags & WLAN_STA_ASSOC)))) {
+               if ((!(rx->fc & IEEE80211_FCTL_FROMDS) &&
+                    !(rx->fc & IEEE80211_FCTL_TODS) &&
+                    (rx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA)
+                   || !rx->u.rx.ra_match) {
+                       /* Drop IBSS frames and frames for other hosts
+                        * silently. */
+                       return TXRX_DROP;
+               }
+
+               if (!rx->local->apdev)
+                       return TXRX_DROP;
+
+               ieee80211_rx_mgmt(rx->local, rx->skb, rx->u.rx.status,
+                                 ieee80211_msg_sta_not_assoc);
+               return TXRX_QUEUED;
+       }
+
+       if (rx->sdata->type == IEEE80211_IF_TYPE_STA)
+               always_sta_key = 0;
+       else
+               always_sta_key = 1;
+
+       if (rx->sta && rx->sta->key && always_sta_key) {
+               rx->key = rx->sta->key;
+       } else {
+               if (rx->sta && rx->sta->key)
+                       rx->key = rx->sta->key;
+               else
+                       rx->key = rx->sdata->default_key;
+
+               if ((rx->local->hw.flags & IEEE80211_HW_WEP_INCLUDE_IV) &&
+                   rx->fc & IEEE80211_FCTL_PROTECTED) {
+                       int keyidx = ieee80211_wep_get_keyidx(rx->skb);
+
+                       if (keyidx >= 0 && keyidx < NUM_DEFAULT_KEYS &&
+                           (!rx->sta || !rx->sta->key || keyidx > 0))
+                               rx->key = rx->sdata->keys[keyidx];
+
+                       if (!rx->key) {
+                               if (!rx->u.rx.ra_match)
+                                       return TXRX_DROP;
+                               printk(KERN_DEBUG "%s: RX WEP frame with "
+                                      "unknown keyidx %d (A1=" MAC_FMT " A2="
+                                      MAC_FMT " A3=" MAC_FMT ")\n",
+                                      rx->dev->name, keyidx,
+                                      MAC_ARG(hdr->addr1),
+                                      MAC_ARG(hdr->addr2),
+                                      MAC_ARG(hdr->addr3));
+                               if (!rx->local->apdev)
+                                       return TXRX_DROP;
+                               ieee80211_rx_mgmt(
+                                       rx->local, rx->skb, rx->u.rx.status,
+                                       ieee80211_msg_wep_frame_unknown_key);
+                               return TXRX_QUEUED;
+                       }
+               }
+       }
+
+       if (rx->fc & IEEE80211_FCTL_PROTECTED && rx->key && rx->u.rx.ra_match) {
+               rx->key->tx_rx_count++;
+               if (unlikely(rx->local->key_tx_rx_threshold &&
+                            rx->key->tx_rx_count >
+                            rx->local->key_tx_rx_threshold)) {
+                       ieee80211_key_threshold_notify(rx->dev, rx->key,
+                                                      rx->sta);
+               }
+       }
+
+       return TXRX_CONTINUE;
+}
+
+
+static ieee80211_txrx_result
+ieee80211_rx_h_sta_process(struct ieee80211_txrx_data *rx)
+{
+       struct sta_info *sta = rx->sta;
+       struct net_device *dev = rx->dev;
+       struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) rx->skb->data;
+
+       if (!sta)
+               return TXRX_CONTINUE;
+
+       /* Update last_rx only for IBSS packets which are for the current
+        * BSSID to avoid keeping the current IBSS network alive in cases where
+        * other STAs are using different BSSID. */
+       if (rx->sdata->type == IEEE80211_IF_TYPE_IBSS) {
+               u8 *bssid = ieee80211_get_bssid(hdr, rx->skb->len);
+               if (compare_ether_addr(bssid, rx->sdata->u.sta.bssid) == 0)
+                       sta->last_rx = jiffies;
+       } else
+       if (!is_multicast_ether_addr(hdr->addr1) ||
+           rx->sdata->type == IEEE80211_IF_TYPE_STA) {
+               /* Update last_rx only for unicast frames in order to prevent
+                * the Probe Request frames (the only broadcast frames from a
+                * STA in infrastructure mode) from keeping a connection alive.
+                */
+               sta->last_rx = jiffies;
+       }
+
+       if (!rx->u.rx.ra_match)
+               return TXRX_CONTINUE;
+
+       sta->rx_fragments++;
+       sta->rx_bytes += rx->skb->len;
+       sta->last_rssi = (sta->last_rssi * 15 +
+                         rx->u.rx.status->ssi) / 16;
+       sta->last_signal = (sta->last_signal * 15 +
+                           rx->u.rx.status->signal) / 16;
+       sta->last_noise = (sta->last_noise * 15 +
+                          rx->u.rx.status->noise) / 16;
+
+       if (!(rx->fc & IEEE80211_FCTL_MOREFRAGS)) {
+               /* Change STA power saving mode only in the end of a frame
+                * exchange sequence */
+               if ((sta->flags & WLAN_STA_PS) && !(rx->fc & IEEE80211_FCTL_PM))
+                       rx->u.rx.sent_ps_buffered += ap_sta_ps_end(dev, sta);
+               else if (!(sta->flags & WLAN_STA_PS) &&
+                        (rx->fc & IEEE80211_FCTL_PM))
+                       ap_sta_ps_start(dev, sta);
+       }
+
+       /* Drop data::nullfunc frames silently, since they are used only to
+        * control station power saving mode. */
+       if ((rx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA &&
+           (rx->fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_NULLFUNC) {
+               I802_DEBUG_INC(rx->local->rx_handlers_drop_nullfunc);
+               /* Update counter and free packet here to avoid counting this
+                * as a dropped packed. */
+               sta->rx_packets++;
+               dev_kfree_skb(rx->skb);
+               return TXRX_QUEUED;
+       }
+
+       return TXRX_CONTINUE;
+} /* ieee80211_rx_h_sta_process */
+
+
+static ieee80211_txrx_result
+ieee80211_rx_h_wep_weak_iv_detection(struct ieee80211_txrx_data *rx)
+{
+       if (!rx->sta || !(rx->fc & IEEE80211_FCTL_PROTECTED) ||
+           (rx->fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA ||
+           !rx->key || rx->key->alg != ALG_WEP || !rx->u.rx.ra_match)
+               return TXRX_CONTINUE;
+
+       /* Check for weak IVs, if hwaccel did not remove IV from the frame */
+       if ((rx->local->hw.flags & IEEE80211_HW_WEP_INCLUDE_IV) ||
+           rx->key->force_sw_encrypt) {
+               u8 *iv = ieee80211_wep_is_weak_iv(rx->skb, rx->key);
+               if (iv) {
+                       rx->sta->wep_weak_iv_count++;
+               }
+       }
+
+       return TXRX_CONTINUE;
+}
+
+
+static ieee80211_txrx_result
+ieee80211_rx_h_wep_decrypt(struct ieee80211_txrx_data *rx)
+{
+       /* If the device handles decryption totally, skip this test */
+       if (rx->local->hw.flags & IEEE80211_HW_DEVICE_HIDES_WEP)
+               return TXRX_CONTINUE;
+
+       if ((rx->key && rx->key->alg != ALG_WEP) ||
+           !(rx->fc & IEEE80211_FCTL_PROTECTED) ||
+           ((rx->fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA &&
+            ((rx->fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_MGMT ||
+             (rx->fc & IEEE80211_FCTL_STYPE) != IEEE80211_STYPE_AUTH)))
+               return TXRX_CONTINUE;
+
+       if (!rx->key) {
+               printk(KERN_DEBUG "%s: RX WEP frame, but no key set\n",
+                      rx->dev->name);
+               return TXRX_DROP;
+       }
+
+       if (!(rx->u.rx.status->flag & RX_FLAG_DECRYPTED) ||
+           rx->key->force_sw_encrypt) {
+               if (ieee80211_wep_decrypt(rx->local, rx->skb, rx->key)) {
+                       printk(KERN_DEBUG "%s: RX WEP frame, decrypt "
+                              "failed\n", rx->dev->name);
+                       return TXRX_DROP;
+               }
+       } else if (rx->local->hw.flags & IEEE80211_HW_WEP_INCLUDE_IV) {
+               ieee80211_wep_remove_iv(rx->local, rx->skb, rx->key);
+               /* remove ICV */
+               skb_trim(rx->skb, rx->skb->len - 4);
+       }
+
+       return TXRX_CONTINUE;
+}
+
+
+static ieee80211_txrx_result
+ieee80211_rx_h_802_1x_pae(struct ieee80211_txrx_data *rx)
+{
+       if (rx->sdata->eapol && ieee80211_is_eapol(rx->skb) &&
+           rx->sdata->type != IEEE80211_IF_TYPE_STA && rx->u.rx.ra_match) {
+               /* Pass both encrypted and unencrypted EAPOL frames to user
+                * space for processing. */
+               if (!rx->local->apdev)
+                       return TXRX_DROP;
+               ieee80211_rx_mgmt(rx->local, rx->skb, rx->u.rx.status,
+                                 ieee80211_msg_normal);
+               return TXRX_QUEUED;
+       }
+
+       if (unlikely(rx->sdata->ieee802_1x &&
+                    (rx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA &&
+                    (rx->fc & IEEE80211_FCTL_STYPE) != IEEE80211_STYPE_NULLFUNC &&
+                    (!rx->sta || !(rx->sta->flags & WLAN_STA_AUTHORIZED)) &&
+                    !ieee80211_is_eapol(rx->skb))) {
+#ifdef CONFIG_MAC80211_DEBUG
+               struct ieee80211_hdr *hdr =
+                       (struct ieee80211_hdr *) rx->skb->data;
+               printk(KERN_DEBUG "%s: dropped frame from " MAC_FMT
+                      " (unauthorized port)\n", rx->dev->name,
+                      MAC_ARG(hdr->addr2));
+#endif /* CONFIG_MAC80211_DEBUG */
+               return TXRX_DROP;
+       }
+
+       return TXRX_CONTINUE;
+}
+
+
+static ieee80211_txrx_result
+ieee80211_rx_h_drop_unencrypted(struct ieee80211_txrx_data *rx)
+{
+       /*  If the device handles decryption totally, skip this test */
+       if (rx->local->hw.flags & IEEE80211_HW_DEVICE_HIDES_WEP)
+               return TXRX_CONTINUE;
+
+       /* Drop unencrypted frames if key is set. */
+       if (unlikely(!(rx->fc & IEEE80211_FCTL_PROTECTED) &&
+                    (rx->fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_DATA &&
+                    (rx->fc & IEEE80211_FCTL_STYPE) != IEEE80211_STYPE_NULLFUNC &&
+                    (rx->key || rx->sdata->drop_unencrypted) &&
+                    (rx->sdata->eapol == 0 ||
+                     !ieee80211_is_eapol(rx->skb)))) {
+               printk(KERN_DEBUG "%s: RX non-WEP frame, but expected "
+                      "encryption\n", rx->dev->name);
+               return TXRX_DROP;
+       }
+       return TXRX_CONTINUE;
+}
+
+
+static ieee80211_txrx_result
+ieee80211_rx_h_mgmt(struct ieee80211_txrx_data *rx)
+{
+       struct ieee80211_sub_if_data *sdata;
+
+       if (!rx->u.rx.ra_match)
+               return TXRX_DROP;
+
+       sdata = IEEE80211_DEV_TO_SUB_IF(rx->dev);
+       if ((sdata->type == IEEE80211_IF_TYPE_STA ||
+            sdata->type == IEEE80211_IF_TYPE_IBSS) &&
+           !rx->local->user_space_mlme) {
+               ieee80211_sta_rx_mgmt(rx->dev, rx->skb, rx->u.rx.status);
+       } else {
+               /* Management frames are sent to hostapd for processing */
+               if (!rx->local->apdev)
+                       return TXRX_DROP;
+               ieee80211_rx_mgmt(rx->local, rx->skb, rx->u.rx.status,
+                                 ieee80211_msg_normal);
+       }
+       return TXRX_QUEUED;
+}
+
+
+static ieee80211_txrx_result
+ieee80211_rx_h_passive_scan(struct ieee80211_txrx_data *rx)
+{
+       struct ieee80211_local *local = rx->local;
+       struct sk_buff *skb = rx->skb;
+
+       if (unlikely(local->sta_scanning != 0)) {
+               ieee80211_sta_rx_scan(rx->dev, skb, rx->u.rx.status);
+               return TXRX_QUEUED;
+       }
+
+       if (unlikely(rx->u.rx.in_scan)) {
+               /* scanning finished during invoking of handlers */
+               I802_DEBUG_INC(local->rx_handlers_drop_passive_scan);
+               return TXRX_DROP;
+       }
+
+       return TXRX_CONTINUE;
+}
+
+
+static void ieee80211_rx_michael_mic_report(struct net_device *dev,
+                                           struct ieee80211_hdr *hdr,
+                                           struct sta_info *sta,
+                                           struct ieee80211_txrx_data *rx)
+{
+       int keyidx, hdrlen;
+
+       hdrlen = ieee80211_get_hdrlen_from_skb(rx->skb);
+       if (rx->skb->len >= hdrlen + 4)
+               keyidx = rx->skb->data[hdrlen + 3] >> 6;
+       else
+               keyidx = -1;
+
+       /* TODO: verify that this is not triggered by fragmented
+        * frames (hw does not verify MIC for them). */
+       printk(KERN_DEBUG "%s: TKIP hwaccel reported Michael MIC "
+              "failure from " MAC_FMT " to " MAC_FMT " keyidx=%d\n",
+              dev->name, MAC_ARG(hdr->addr2), MAC_ARG(hdr->addr1), keyidx);
+
+       if (!sta) {
+               /* Some hardware versions seem to generate incorrect
+                * Michael MIC reports; ignore them to avoid triggering
+                * countermeasures. */
+               printk(KERN_DEBUG "%s: ignored spurious Michael MIC "
+                      "error for unknown address " MAC_FMT "\n",
+                      dev->name, MAC_ARG(hdr->addr2));
+               goto ignore;
+       }
+
+       if (!(rx->fc & IEEE80211_FCTL_PROTECTED)) {
+               printk(KERN_DEBUG "%s: ignored spurious Michael MIC "
+                      "error for a frame with no ISWEP flag (src "
+                      MAC_FMT ")\n", dev->name, MAC_ARG(hdr->addr2));
+               goto ignore;
+       }
+
+       if ((rx->local->hw.flags & IEEE80211_HW_WEP_INCLUDE_IV) &&
+           rx->sdata->type == IEEE80211_IF_TYPE_AP) {
+               keyidx = ieee80211_wep_get_keyidx(rx->skb);
+               /* AP with Pairwise keys support should never receive Michael
+                * MIC errors for non-zero keyidx because these are reserved
+                * for group keys and only the AP is sending real multicast
+                * frames in BSS. */
+               if (keyidx) {
+                       printk(KERN_DEBUG "%s: ignored Michael MIC error for "
+                              "a frame with non-zero keyidx (%d) (src " MAC_FMT
+                              ")\n", dev->name, keyidx, MAC_ARG(hdr->addr2));
+                       goto ignore;
+               }
+       }
+
+       if ((rx->fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA &&
+           ((rx->fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_MGMT ||
+            (rx->fc & IEEE80211_FCTL_STYPE) != IEEE80211_STYPE_AUTH)) {
+               printk(KERN_DEBUG "%s: ignored spurious Michael MIC "
+                      "error for a frame that cannot be encrypted "
+                      "(fc=0x%04x) (src " MAC_FMT ")\n",
+                      dev->name, rx->fc, MAC_ARG(hdr->addr2));
+               goto ignore;
+       }
+
+       do {
+               union iwreq_data wrqu;
+               char *buf = kmalloc(128, GFP_ATOMIC);
+               if (!buf)
+                       break;
+
+               /* TODO: needed parameters: count, key type, TSC */
+               sprintf(buf, "MLME-MICHAELMICFAILURE.indication("
+                       "keyid=%d %scast addr=" MAC_FMT ")",
+                       keyidx, hdr->addr1[0] & 0x01 ? "broad" : "uni",
+                       MAC_ARG(hdr->addr2));
+               memset(&wrqu, 0, sizeof(wrqu));
+               wrqu.data.length = strlen(buf);
+               wireless_send_event(rx->dev, IWEVCUSTOM, &wrqu, buf);
+               kfree(buf);
+       } while (0);
+
+       /* TODO: consider verifying the MIC error report with software
+        * implementation if we get too many spurious reports from the
+        * hardware. */
+       if (!rx->local->apdev)
+               goto ignore;
+       ieee80211_rx_mgmt(rx->local, rx->skb, rx->u.rx.status,
+                         ieee80211_msg_michael_mic_failure);
+       return;
+
+ ignore:
+       dev_kfree_skb(rx->skb);
+       rx->skb = NULL;
+}
+
+static inline ieee80211_txrx_result __ieee80211_invoke_rx_handlers(
+                               struct ieee80211_local *local,
+                               ieee80211_rx_handler *handlers,
+                               struct ieee80211_txrx_data *rx,
+                               struct sta_info *sta)
+{
+       ieee80211_rx_handler *handler;
+       ieee80211_txrx_result res = TXRX_DROP;
+
+       for (handler = handlers; *handler != NULL; handler++) {
+               res = (*handler)(rx);
+               if (res != TXRX_CONTINUE) {
+                       if (res == TXRX_DROP) {
+                               I802_DEBUG_INC(local->rx_handlers_drop);
+                               if (sta)
+                                       sta->rx_dropped++;
+                       }
+                       if (res == TXRX_QUEUED)
+                               I802_DEBUG_INC(local->rx_handlers_queued);
+                       break;
+               }
+       }
+
+       if (res == TXRX_DROP) {
+               dev_kfree_skb(rx->skb);
+       }
+       return res;
+}
+
+static inline void ieee80211_invoke_rx_handlers(struct ieee80211_local *local,
+                                               ieee80211_rx_handler *handlers,
+                                               struct ieee80211_txrx_data *rx,
+                                               struct sta_info *sta)
+{
+       if (__ieee80211_invoke_rx_handlers(local, handlers, rx, sta) ==
+           TXRX_CONTINUE)
+               dev_kfree_skb(rx->skb);
+}
+
+/*
+ * This is the receive path handler. It is called by a low level driver when an
+ * 802.11 MPDU is received from the hardware.
+ */
+void __ieee80211_rx(struct ieee80211_hw *hw, struct sk_buff *skb,
+                   struct ieee80211_rx_status *status)
+{
+       struct ieee80211_local *local = hw_to_local(hw);
+       struct ieee80211_sub_if_data *sdata;
+       struct sta_info *sta;
+       struct ieee80211_hdr *hdr;
+       struct ieee80211_txrx_data rx;
+       u16 type;
+       int multicast;
+       int radiotap_len = 0;
+
+       if (status->flag & RX_FLAG_RADIOTAP) {
+               radiotap_len = ieee80211_get_radiotap_len(skb);
+               skb_pull(skb, radiotap_len);
+       }
+
+       hdr = (struct ieee80211_hdr *) skb->data;
+       memset(&rx, 0, sizeof(rx));
+       rx.skb = skb;
+       rx.local = local;
+
+       rx.u.rx.status = status;
+       rx.fc = skb->len >= 2 ? le16_to_cpu(hdr->frame_control) : 0;
+       type = rx.fc & IEEE80211_FCTL_FTYPE;
+       if (type == IEEE80211_FTYPE_DATA || type == IEEE80211_FTYPE_MGMT)
+               local->dot11ReceivedFragmentCount++;
+       multicast = is_multicast_ether_addr(hdr->addr1);
+
+       if (skb->len >= 16)
+               sta = rx.sta = sta_info_get(local, hdr->addr2);
+       else
+               sta = rx.sta = NULL;
+
+       if (sta) {
+               rx.dev = sta->dev;
+               rx.sdata = IEEE80211_DEV_TO_SUB_IF(rx.dev);
+       }
+
+       if ((status->flag & RX_FLAG_MMIC_ERROR)) {
+               ieee80211_rx_michael_mic_report(local->mdev, hdr, sta, &rx);
+               goto end;
+       }
+
+       if (unlikely(local->sta_scanning))
+               rx.u.rx.in_scan = 1;
+
+       if (__ieee80211_invoke_rx_handlers(local, local->rx_pre_handlers, &rx,
+                                          sta) != TXRX_CONTINUE)
+               goto end;
+       skb = rx.skb;
+
+       skb_push(skb, radiotap_len);
+       if (sta && !sta->assoc_ap && !(sta->flags & WLAN_STA_WDS) &&
+           !local->iff_promiscs && !multicast) {
+               rx.u.rx.ra_match = 1;
+               ieee80211_invoke_rx_handlers(local, local->rx_handlers, &rx,
+                                            sta);
+       } else {
+               struct ieee80211_sub_if_data *prev = NULL;
+               struct sk_buff *skb_new;
+               u8 *bssid = ieee80211_get_bssid(hdr, skb->len - radiotap_len);
+
+               read_lock(&local->sub_if_lock);
+               list_for_each_entry(sdata, &local->sub_if_list, list) {
+                       rx.u.rx.ra_match = 1;
+                       switch (sdata->type) {
+                       case IEEE80211_IF_TYPE_STA:
+                               if (!bssid)
+                                       continue;
+                               if (!ieee80211_bssid_match(bssid,
+                                                       sdata->u.sta.bssid)) {
+                                       if (!rx.u.rx.in_scan)
+                                               continue;
+                                       rx.u.rx.ra_match = 0;
+                               } else if (!multicast &&
+                                          compare_ether_addr(sdata->dev->dev_addr,
+                                                             hdr->addr1) != 0) {
+                                       if (!sdata->promisc)
+                                               continue;
+                                       rx.u.rx.ra_match = 0;
+                               }
+                               break;
+                       case IEEE80211_IF_TYPE_IBSS:
+                               if (!bssid)
+                                       continue;
+                               if (!ieee80211_bssid_match(bssid,
+                                                       sdata->u.sta.bssid)) {
+                                       if (!rx.u.rx.in_scan)
+                                               continue;
+                                       rx.u.rx.ra_match = 0;
+                               } else if (!multicast &&
+                                          compare_ether_addr(sdata->dev->dev_addr,
+                                                             hdr->addr1) != 0) {
+                                       if (!sdata->promisc)
+                                               continue;
+                                       rx.u.rx.ra_match = 0;
+                               } else if (!sta)
+                                       sta = rx.sta =
+                                               ieee80211_ibss_add_sta(sdata->dev,
+                                                                      skb, bssid,
+                                                                      hdr->addr2);
+                               break;
+                       case IEEE80211_IF_TYPE_AP:
+                               if (!bssid) {
+                                       if (compare_ether_addr(sdata->dev->dev_addr,
+                                                              hdr->addr1) != 0)
+                                               continue;
+                               } else if (!ieee80211_bssid_match(bssid,
+                                                       sdata->dev->dev_addr)) {
+                                       if (!rx.u.rx.in_scan)
+                                               continue;
+                                       rx.u.rx.ra_match = 0;
+                               }
+                               if (sdata->dev == local->mdev &&
+                                   !rx.u.rx.in_scan)
+                                       /* do not receive anything via
+                                        * master device when not scanning */
+                                       continue;
+                               break;
+                       case IEEE80211_IF_TYPE_WDS:
+                               if (bssid ||
+                                   (rx.fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA)
+                                       continue;
+                               if (compare_ether_addr(sdata->u.wds.remote_addr,
+                                                      hdr->addr2) != 0)
+                                       continue;
+                               break;
+                       }
+
+                       if (prev) {
+                               skb_new = skb_copy(skb, GFP_ATOMIC);
+                               if (!skb_new) {
+                                       if (net_ratelimit())
+                                               printk(KERN_DEBUG "%s: failed to copy "
+                                                      "multicast frame for %s",
+                                                      local->mdev->name, prev->dev->name);
+                                       continue;
+                               }
+                               rx.skb = skb_new;
+                               rx.dev = prev->dev;
+                               rx.sdata = prev;
+                               ieee80211_invoke_rx_handlers(local,
+                                                            local->rx_handlers,
+                                                            &rx, sta);
+                       }
+                       prev = sdata;
+               }
+               if (prev) {
+                       rx.skb = skb;
+                       rx.dev = prev->dev;
+                       rx.sdata = prev;
+                       ieee80211_invoke_rx_handlers(local, local->rx_handlers,
+                                                    &rx, sta);
+               } else
+                       dev_kfree_skb(skb);
+               read_unlock(&local->sub_if_lock);
+       }
+
+  end:
+       if (sta)
+               sta_info_put(sta);
+}
+EXPORT_SYMBOL(__ieee80211_rx);
+
+static ieee80211_txrx_result
+ieee80211_tx_h_load_stats(struct ieee80211_txrx_data *tx)
+{
+       struct ieee80211_local *local = tx->local;
+       struct ieee80211_hw_mode *mode = tx->u.tx.mode;
+       struct sk_buff *skb = tx->skb;
+       struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+       u32 load = 0, hdrtime;
+
+       /* TODO: this could be part of tx_status handling, so that the number
+        * of retries would be known; TX rate should in that case be stored
+        * somewhere with the packet */
+
+       /* Estimate total channel use caused by this frame */
+
+       /* 1 bit at 1 Mbit/s takes 1 usec; in channel_use values,
+        * 1 usec = 1/8 * (1080 / 10) = 13.5 */
+
+       if (mode->mode == MODE_IEEE80211A ||
+           mode->mode == MODE_ATHEROS_TURBO ||
+           mode->mode == MODE_ATHEROS_TURBOG ||
+           (mode->mode == MODE_IEEE80211G &&
+            tx->u.tx.rate->flags & IEEE80211_RATE_ERP))
+               hdrtime = CHAN_UTIL_HDR_SHORT;
+       else
+               hdrtime = CHAN_UTIL_HDR_LONG;
+
+       load = hdrtime;
+       if (!is_multicast_ether_addr(hdr->addr1))
+               load += hdrtime;
+
+       if (tx->u.tx.control->flags & IEEE80211_TXCTL_USE_RTS_CTS)
+               load += 2 * hdrtime;
+       else if (tx->u.tx.control->flags & IEEE80211_TXCTL_USE_CTS_PROTECT)
+               load += hdrtime;
+
+       load += skb->len * tx->u.tx.rate->rate_inv;
+
+       if (tx->u.tx.extra_frag) {
+               int i;
+               for (i = 0; i < tx->u.tx.num_extra_frag; i++) {
+                       load += 2 * hdrtime;
+                       load += tx->u.tx.extra_frag[i]->len *
+                               tx->u.tx.rate->rate;
+               }
+       }
+
+       /* Divide channel_use by 8 to avoid wrapping around the counter */
+       load >>= CHAN_UTIL_SHIFT;
+       local->channel_use_raw += load;
+       if (tx->sta)
+               tx->sta->channel_use_raw += load;
+       tx->sdata->channel_use_raw += load;
+
+       return TXRX_CONTINUE;
+}
+
+
+static ieee80211_txrx_result
+ieee80211_rx_h_load_stats(struct ieee80211_txrx_data *rx)
+{
+       struct ieee80211_local *local = rx->local;
+       struct sk_buff *skb = rx->skb;
+       struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+       u32 load = 0, hdrtime;
+       struct ieee80211_rate *rate;
+       struct ieee80211_hw_mode *mode = local->hw.conf.mode;
+       int i;
+
+       /* Estimate total channel use caused by this frame */
+
+       if (unlikely(mode->num_rates < 0))
+               return TXRX_CONTINUE;
+
+       rate = &mode->rates[0];
+       for (i = 0; i < mode->num_rates; i++) {
+               if (mode->rates[i].val == rx->u.rx.status->rate) {
+                       rate = &mode->rates[i];
+                       break;
+               }
+       }
+
+       /* 1 bit at 1 Mbit/s takes 1 usec; in channel_use values,
+        * 1 usec = 1/8 * (1080 / 10) = 13.5 */
+
+       if (mode->mode == MODE_IEEE80211A ||
+           mode->mode == MODE_ATHEROS_TURBO ||
+           mode->mode == MODE_ATHEROS_TURBOG ||
+           (mode->mode == MODE_IEEE80211G &&
+            rate->flags & IEEE80211_RATE_ERP))
+               hdrtime = CHAN_UTIL_HDR_SHORT;
+       else
+               hdrtime = CHAN_UTIL_HDR_LONG;
+
+       load = hdrtime;
+       if (!is_multicast_ether_addr(hdr->addr1))
+               load += hdrtime;
+
+       load += skb->len * rate->rate_inv;
+
+       /* Divide channel_use by 8 to avoid wrapping around the counter */
+       load >>= CHAN_UTIL_SHIFT;
+       local->channel_use_raw += load;
+       if (rx->sta)
+               rx->sta->channel_use_raw += load;
+       rx->u.rx.load = load;
+
+       return TXRX_CONTINUE;
+}
+
+static ieee80211_txrx_result
+ieee80211_rx_h_if_stats(struct ieee80211_txrx_data *rx)
+{
+       rx->sdata->channel_use_raw += rx->u.rx.load;
+       return TXRX_CONTINUE;
+}
+
+static void ieee80211_stat_refresh(unsigned long data)
+{
+       struct ieee80211_local *local = (struct ieee80211_local *) data;
+       struct sta_info *sta;
+       struct ieee80211_sub_if_data *sdata;
+
+       if (!local->stat_time)
+               return;
+
+       /* go through all stations */
+       spin_lock_bh(&local->sta_lock);
+       list_for_each_entry(sta, &local->sta_list, list) {
+               sta->channel_use = (sta->channel_use_raw / local->stat_time) /
+                       CHAN_UTIL_PER_10MS;
+               sta->channel_use_raw = 0;
+       }
+       spin_unlock_bh(&local->sta_lock);
+
+       /* go through all subinterfaces */
+       read_lock(&local->sub_if_lock);
+       list_for_each_entry(sdata, &local->sub_if_list, list) {
+               sdata->channel_use = (sdata->channel_use_raw /
+                                     local->stat_time) / CHAN_UTIL_PER_10MS;
+               sdata->channel_use_raw = 0;
+       }
+       read_unlock(&local->sub_if_lock);
+
+       /* hardware interface */
+       local->channel_use = (local->channel_use_raw /
+                             local->stat_time) / CHAN_UTIL_PER_10MS;
+       local->channel_use_raw = 0;
+
+       local->stat_timer.expires = jiffies + HZ * local->stat_time / 100;
+       add_timer(&local->stat_timer);
+}
+
+
+/* This is a version of the rx handler that can be called from hard irq
+ * context. Post the skb on the queue and schedule the tasklet */
+void ieee80211_rx_irqsafe(struct ieee80211_hw *hw, struct sk_buff *skb,
+                         struct ieee80211_rx_status *status)
+{
+       struct ieee80211_local *local = hw_to_local(hw);
+
+       BUILD_BUG_ON(sizeof(struct ieee80211_rx_status) > sizeof(skb->cb));
+
+       skb->dev = local->mdev;
+       /* copy status into skb->cb for use by tasklet */
+       memcpy(skb->cb, status, sizeof(*status));
+       skb->pkt_type = IEEE80211_RX_MSG;
+       skb_queue_tail(&local->skb_queue, skb);
+       tasklet_schedule(&local->tasklet);
+}
+EXPORT_SYMBOL(ieee80211_rx_irqsafe);
+
+void ieee80211_tx_status_irqsafe(struct ieee80211_hw *hw,
+                                struct sk_buff *skb,
+                                struct ieee80211_tx_status *status)
+{
+       struct ieee80211_local *local = hw_to_local(hw);
+       struct ieee80211_tx_status *saved;
+       int tmp;
+
+       skb->dev = local->mdev;
+       saved = kmalloc(sizeof(struct ieee80211_tx_status), GFP_ATOMIC);
+       if (unlikely(!saved)) {
+               if (net_ratelimit())
+                       printk(KERN_WARNING "%s: Not enough memory, "
+                              "dropping tx status", skb->dev->name);
+               /* should be dev_kfree_skb_irq, but due to this function being
+                * named _irqsafe instead of just _irq we can't be sure that
+                * people won't call it from non-irq contexts */
+               dev_kfree_skb_any(skb);
+               return;
+       }
+       memcpy(saved, status, sizeof(struct ieee80211_tx_status));
+       /* copy pointer to saved status into skb->cb for use by tasklet */
+       memcpy(skb->cb, &saved, sizeof(saved));
+
+       skb->pkt_type = IEEE80211_TX_STATUS_MSG;
+       skb_queue_tail(status->control.flags & IEEE80211_TXCTL_REQ_TX_STATUS ?
+                      &local->skb_queue : &local->skb_queue_unreliable, skb);
+       tmp = skb_queue_len(&local->skb_queue) +
+               skb_queue_len(&local->skb_queue_unreliable);
+       while (tmp > IEEE80211_IRQSAFE_QUEUE_LIMIT &&
+              (skb = skb_dequeue(&local->skb_queue_unreliable))) {
+               memcpy(&saved, skb->cb, sizeof(saved));
+               kfree(saved);
+               dev_kfree_skb_irq(skb);
+               tmp--;
+               I802_DEBUG_INC(local->tx_status_drop);
+       }
+       tasklet_schedule(&local->tasklet);
+}
+EXPORT_SYMBOL(ieee80211_tx_status_irqsafe);
+
+static void ieee80211_tasklet_handler(unsigned long data)
+{
+       struct ieee80211_local *local = (struct ieee80211_local *) data;
+       struct sk_buff *skb;
+       struct ieee80211_rx_status rx_status;
+       struct ieee80211_tx_status *tx_status;
+
+       while ((skb = skb_dequeue(&local->skb_queue)) ||
+              (skb = skb_dequeue(&local->skb_queue_unreliable))) {
+               switch (skb->pkt_type) {
+               case IEEE80211_RX_MSG:
+                       /* status is in skb->cb */
+                       memcpy(&rx_status, skb->cb, sizeof(rx_status));
+                       /* Clear skb->type in order to not confuse kernel
+                        * netstack. */
+                       skb->pkt_type = 0;
+                       __ieee80211_rx(local_to_hw(local), skb, &rx_status);
+                       break;
+               case IEEE80211_TX_STATUS_MSG:
+                       /* get pointer to saved status out of skb->cb */
+                       memcpy(&tx_status, skb->cb, sizeof(tx_status));
+                       skb->pkt_type = 0;
+                       ieee80211_tx_status(local_to_hw(local),
+                                           skb, tx_status);
+                       kfree(tx_status);
+                       break;
+               default: /* should never get here! */
+                       printk(KERN_ERR "%s: Unknown message type (%d)\n",
+                              local->mdev->name, skb->pkt_type);
+                       dev_kfree_skb(skb);
+                       break;
+               }
+       }
+}
+
+
+/* Remove added headers (e.g., QoS control), encryption header/MIC, etc. to
+ * make a prepared TX frame (one that has been given to hw) to look like brand
+ * new IEEE 802.11 frame that is ready to go through TX processing again.
+ * Also, tx_packet_data in cb is restored from tx_control. */
+static void ieee80211_remove_tx_extra(struct ieee80211_local *local,
+                                     struct ieee80211_key *key,
+                                     struct sk_buff *skb,
+                                     struct ieee80211_tx_control *control)
+{
+       int hdrlen, iv_len, mic_len;
+       struct ieee80211_tx_packet_data *pkt_data;
+
+       pkt_data = (struct ieee80211_tx_packet_data *)skb->cb;
+       pkt_data->ifindex = control->ifindex;
+       pkt_data->mgmt_iface = (control->type == IEEE80211_IF_TYPE_MGMT);
+       pkt_data->req_tx_status = !!(control->flags & IEEE80211_TXCTL_REQ_TX_STATUS);
+       pkt_data->do_not_encrypt = !!(control->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT);
+       pkt_data->requeue = !!(control->flags & IEEE80211_TXCTL_REQUEUE);
+       pkt_data->queue = control->queue;
+
+       hdrlen = ieee80211_get_hdrlen_from_skb(skb);
+
+       if (!key)
+               goto no_key;
+
+       switch (key->alg) {
+       case ALG_WEP:
+               iv_len = WEP_IV_LEN;
+               mic_len = WEP_ICV_LEN;
+               break;
+       case ALG_TKIP:
+               iv_len = TKIP_IV_LEN;
+               mic_len = TKIP_ICV_LEN;
+               break;
+       case ALG_CCMP:
+               iv_len = CCMP_HDR_LEN;
+               mic_len = CCMP_MIC_LEN;
+               break;
+       default:
+               goto no_key;
+       }
+
+       if (skb->len >= mic_len && key->force_sw_encrypt)
+               skb_trim(skb, skb->len - mic_len);
+       if (skb->len >= iv_len && skb->len > hdrlen) {
+               memmove(skb->data + iv_len, skb->data, hdrlen);
+               skb_pull(skb, iv_len);
+       }
+
+no_key:
+       {
+               struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+               u16 fc = le16_to_cpu(hdr->frame_control);
+               if ((fc & 0x8C) == 0x88) /* QoS Control Field */ {
+                       fc &= ~IEEE80211_STYPE_QOS_DATA;
+                       hdr->frame_control = cpu_to_le16(fc);
+                       memmove(skb->data + 2, skb->data, hdrlen - 2);
+                       skb_pull(skb, 2);
+               }
+       }
+}
+
+
+void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb,
+                        struct ieee80211_tx_status *status)
+{
+       struct sk_buff *skb2;
+       struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+       struct ieee80211_local *local = hw_to_local(hw);
+       u16 frag, type;
+       u32 msg_type;
+
+       if (!status) {
+               printk(KERN_ERR
+                      "%s: ieee80211_tx_status called with NULL status\n",
+                      local->mdev->name);
+               dev_kfree_skb(skb);
+               return;
+       }
+
+       if (status->excessive_retries) {
+               struct sta_info *sta;
+               sta = sta_info_get(local, hdr->addr1);
+               if (sta) {
+                       if (sta->flags & WLAN_STA_PS) {
+                               /* The STA is in power save mode, so assume
+                                * that this TX packet failed because of that.
+                                */
+                               status->excessive_retries = 0;
+                               status->flags |= IEEE80211_TX_STATUS_TX_FILTERED;
+                       }
+                       sta_info_put(sta);
+               }
+       }
+
+       if (status->flags & IEEE80211_TX_STATUS_TX_FILTERED) {
+               struct sta_info *sta;
+               sta = sta_info_get(local, hdr->addr1);
+               if (sta) {
+                       sta->tx_filtered_count++;
+
+                       /* Clear the TX filter mask for this STA when sending
+                        * the next packet. If the STA went to power save mode,
+                        * this will happen when it is waking up for the next
+                        * time. */
+                       sta->clear_dst_mask = 1;
+
+                       /* TODO: Is the WLAN_STA_PS flag always set here or is
+                        * the race between RX and TX status causing some
+                        * packets to be filtered out before 80211.o gets an
+                        * update for PS status? This seems to be the case, so
+                        * no changes are likely to be needed. */
+                       if (sta->flags & WLAN_STA_PS &&
+                           skb_queue_len(&sta->tx_filtered) <
+                           STA_MAX_TX_BUFFER) {
+                               ieee80211_remove_tx_extra(local, sta->key,
+                                                         skb,
+                                                         &status->control);
+                               skb_queue_tail(&sta->tx_filtered, skb);
+                       } else if (!(sta->flags & WLAN_STA_PS) &&
+                                  !(status->control.flags & IEEE80211_TXCTL_REQUEUE)) {
+                               /* Software retry the packet once */
+                               status->control.flags |= IEEE80211_TXCTL_REQUEUE;
+                               ieee80211_remove_tx_extra(local, sta->key,
+                                                         skb,
+                                                         &status->control);
+                               dev_queue_xmit(skb);
+                       } else {
+                               if (net_ratelimit()) {
+                                       printk(KERN_DEBUG "%s: dropped TX "
+                                              "filtered frame queue_len=%d "
+                                              "PS=%d @%lu\n",
+                                              local->mdev->name,
+                                              skb_queue_len(
+                                                      &sta->tx_filtered),
+                                              !!(sta->flags & WLAN_STA_PS),
+                                              jiffies);
+                               }
+                               dev_kfree_skb(skb);
+                       }
+                       sta_info_put(sta);
+                       return;
+               }
+       } else {
+               /* FIXME: STUPID to call this with both local and local->mdev */
+               rate_control_tx_status(local, local->mdev, skb, status);
+       }
+
+       ieee80211_led_tx(local, 0);
+
+       /* SNMP counters
+        * Fragments are passed to low-level drivers as separate skbs, so these
+        * are actually fragments, not frames. Update frame counters only for
+        * the first fragment of the frame. */
+
+       frag = le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG;
+       type = le16_to_cpu(hdr->frame_control) & IEEE80211_FCTL_FTYPE;
+
+       if (status->flags & IEEE80211_TX_STATUS_ACK) {
+               if (frag == 0) {
+                       local->dot11TransmittedFrameCount++;
+                       if (is_multicast_ether_addr(hdr->addr1))
+                               local->dot11MulticastTransmittedFrameCount++;
+                       if (status->retry_count > 0)
+                               local->dot11RetryCount++;
+                       if (status->retry_count > 1)
+                               local->dot11MultipleRetryCount++;
+               }
+
+               /* This counter shall be incremented for an acknowledged MPDU
+                * with an individual address in the address 1 field or an MPDU
+                * with a multicast address in the address 1 field of type Data
+                * or Management. */
+               if (!is_multicast_ether_addr(hdr->addr1) ||
+                   type == IEEE80211_FTYPE_DATA ||
+                   type == IEEE80211_FTYPE_MGMT)
+                       local->dot11TransmittedFragmentCount++;
+       } else {
+               if (frag == 0)
+                       local->dot11FailedCount++;
+       }
+
+       if (!(status->control.flags & IEEE80211_TXCTL_REQ_TX_STATUS)
+           || unlikely(!local->apdev)) {
+               dev_kfree_skb(skb);
+               return;
+       }
+
+       msg_type = (status->flags & IEEE80211_TX_STATUS_ACK) ?
+               ieee80211_msg_tx_callback_ack : ieee80211_msg_tx_callback_fail;
+
+       /* skb was the original skb used for TX. Clone it and give the clone
+        * to netif_rx(). Free original skb. */
+       skb2 = skb_copy(skb, GFP_ATOMIC);
+       if (!skb2) {
+               dev_kfree_skb(skb);
+               return;
+       }
+       dev_kfree_skb(skb);
+       skb = skb2;
+
+       /* Send frame to hostapd */
+       ieee80211_rx_mgmt(local, skb, NULL, msg_type);
+}
+EXPORT_SYMBOL(ieee80211_tx_status);
+
+/* TODO: implement register/unregister functions for adding TX/RX handlers
+ * into ordered list */
+
+/* rx_pre handlers don't have dev and sdata fields available in
+ * ieee80211_txrx_data */
+static ieee80211_rx_handler ieee80211_rx_pre_handlers[] =
+{
+       ieee80211_rx_h_parse_qos,
+       ieee80211_rx_h_load_stats,
+       NULL
+};
+
+static ieee80211_rx_handler ieee80211_rx_handlers[] =
+{
+       ieee80211_rx_h_if_stats,
+       ieee80211_rx_h_monitor,
+       ieee80211_rx_h_passive_scan,
+       ieee80211_rx_h_check,
+       ieee80211_rx_h_sta_process,
+       ieee80211_rx_h_ccmp_decrypt,
+       ieee80211_rx_h_tkip_decrypt,
+       ieee80211_rx_h_wep_weak_iv_detection,
+       ieee80211_rx_h_wep_decrypt,
+       ieee80211_rx_h_defragment,
+       ieee80211_rx_h_ps_poll,
+       ieee80211_rx_h_michael_mic_verify,
+       /* this must be after decryption - so header is counted in MPDU mic
+        * must be before pae and data, so QOS_DATA format frames
+        * are not passed to user space by these functions
+        */
+       ieee80211_rx_h_remove_qos_control,
+       ieee80211_rx_h_802_1x_pae,
+       ieee80211_rx_h_drop_unencrypted,
+       ieee80211_rx_h_data_agg,
+       ieee80211_rx_h_data,
+       ieee80211_rx_h_mgmt,
+       NULL
+};
+
+static ieee80211_tx_handler ieee80211_tx_handlers[] =
+{
+       ieee80211_tx_h_check_assoc,
+       ieee80211_tx_h_sequence,
+       ieee80211_tx_h_ps_buf,
+       ieee80211_tx_h_select_key,
+       ieee80211_tx_h_michael_mic_add,
+       ieee80211_tx_h_fragment,
+       ieee80211_tx_h_tkip_encrypt,
+       ieee80211_tx_h_ccmp_encrypt,
+       ieee80211_tx_h_wep_encrypt,
+       ieee80211_tx_h_rate_ctrl,
+       ieee80211_tx_h_misc,
+       ieee80211_tx_h_load_stats,
+       NULL
+};
+
+
+int ieee80211_if_update_wds(struct net_device *dev, u8 *remote_addr)
+{
+       struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
+       struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+       struct sta_info *sta;
+
+       if (compare_ether_addr(remote_addr, sdata->u.wds.remote_addr) == 0)
+               return 0;
+
+       /* Create STA entry for the new peer */
+       sta = sta_info_add(local, dev, remote_addr, GFP_KERNEL);
+       if (!sta)
+               return -ENOMEM;
+       sta_info_put(sta);
+
+       /* Remove STA entry for the old peer */
+       sta = sta_info_get(local, sdata->u.wds.remote_addr);
+       if (sta) {
+               sta_info_put(sta);
+               sta_info_free(sta, 0);
+       } else {
+               printk(KERN_DEBUG "%s: could not find STA entry for WDS link "
+                      "peer " MAC_FMT "\n",
+                      dev->name, MAC_ARG(sdata->u.wds.remote_addr));
+       }
+
+       /* Update WDS link data */
+       memcpy(&sdata->u.wds.remote_addr, remote_addr, ETH_ALEN);
+
+       return 0;
+}
+
+/* Must not be called for mdev and apdev */
+void ieee80211_if_setup(struct net_device *dev)
+{
+       ether_setup(dev);
+       dev->hard_start_xmit = ieee80211_subif_start_xmit;
+       dev->wireless_handlers = &ieee80211_iw_handler_def;
+       dev->do_ioctl = ieee80211_ioctl;
+       dev->set_multicast_list = ieee80211_set_multicast_list;
+       dev->change_mtu = ieee80211_change_mtu;
+       dev->get_stats = ieee80211_get_stats;
+       dev->open = ieee80211_open;
+       dev->stop = ieee80211_stop;
+       dev->uninit = ieee80211_if_reinit;
+       dev->destructor = ieee80211_if_free;
+}
+
+void ieee80211_if_mgmt_setup(struct net_device *dev)
+{
+       ether_setup(dev);
+       dev->hard_start_xmit = ieee80211_mgmt_start_xmit;
+       dev->change_mtu = ieee80211_change_mtu_apdev;
+       dev->get_stats = ieee80211_get_stats;
+       dev->open = ieee80211_mgmt_open;
+       dev->stop = ieee80211_mgmt_stop;
+       dev->type = ARPHRD_IEEE80211_PRISM;
+       dev->hard_header_parse = header_parse_80211;
+       dev->uninit = ieee80211_if_reinit;
+       dev->destructor = ieee80211_if_free;
+}
+
+int ieee80211_init_rate_ctrl_alg(struct ieee80211_local *local,
+                                const char *name)
+{
+       struct rate_control_ref *ref, *old;
+
+       ASSERT_RTNL();
+       if (local->open_count || netif_running(local->mdev) ||
+           (local->apdev && netif_running(local->apdev)))
+               return -EBUSY;
+
+       ref = rate_control_alloc(name, local);
+       if (!ref) {
+               printk(KERN_WARNING "%s: Failed to select rate control "
+                      "algorithm\n", local->mdev->name);
+               return -ENOENT;
+       }
+
+       old = local->rate_ctrl;
+       local->rate_ctrl = ref;
+       if (old) {
+               rate_control_put(old);
+               sta_info_flush(local, NULL);
+       }
+
+       printk(KERN_DEBUG "%s: Selected rate control "
+              "algorithm '%s'\n", local->mdev->name,
+              ref->ops->name);
+
+
+       return 0;
+}
+
+static void rate_control_deinitialize(struct ieee80211_local *local)
+{
+       struct rate_control_ref *ref;
+
+       ref = local->rate_ctrl;
+       local->rate_ctrl = NULL;
+       rate_control_put(ref);
+}
+
+struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len,
+                                       const struct ieee80211_ops *ops)
+{
+       struct net_device *mdev;
+       struct ieee80211_local *local;
+       struct ieee80211_sub_if_data *sdata;
+       int priv_size;
+       struct wiphy *wiphy;
+
+       /* Ensure 32-byte alignment of our private data and hw private data.
+        * We use the wiphy priv data for both our ieee80211_local and for
+        * the driver's private data
+        *
+        * In memory it'll be like this:
+        *
+        * +-------------------------+
+        * | struct wiphy           |
+        * +-------------------------+
+        * | struct ieee80211_local  |
+        * +-------------------------+
+        * | driver's private data   |
+        * +-------------------------+
+        *
+        */
+       priv_size = ((sizeof(struct ieee80211_local) +
+                     NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST) +
+                   priv_data_len;
+
+       wiphy = wiphy_new(&mac80211_config_ops, priv_size);
+
+       if (!wiphy)
+               return NULL;
+
+       wiphy->privid = mac80211_wiphy_privid;
+
+       local = wiphy_priv(wiphy);
+       local->hw.wiphy = wiphy;
+
+       local->hw.priv = (char *)local +
+                        ((sizeof(struct ieee80211_local) +
+                          NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST);
+
+       local->ops = ops;
+
+       /* for now, mdev needs sub_if_data :/ */
+       mdev = alloc_netdev(sizeof(struct ieee80211_sub_if_data),
+                           "wmaster%d", ether_setup);
+       if (!mdev) {
+               wiphy_free(wiphy);
+               return NULL;
+       }
+
+       sdata = IEEE80211_DEV_TO_SUB_IF(mdev);
+       mdev->ieee80211_ptr = &sdata->wdev;
+       sdata->wdev.wiphy = wiphy;
+
+       local->hw.queues = 1; /* default */
+
+       local->mdev = mdev;
+       local->rx_pre_handlers = ieee80211_rx_pre_handlers;
+       local->rx_handlers = ieee80211_rx_handlers;
+       local->tx_handlers = ieee80211_tx_handlers;
+
+       local->bridge_packets = 1;
+
+       local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
+       local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD;
+       local->short_retry_limit = 7;
+       local->long_retry_limit = 4;
+       local->hw.conf.radio_enabled = 1;
+       local->rate_ctrl_num_up = RATE_CONTROL_NUM_UP;
+       local->rate_ctrl_num_down = RATE_CONTROL_NUM_DOWN;
+
+       local->enabled_modes = (unsigned int) -1;
+
+       INIT_LIST_HEAD(&local->modes_list);
+
+       rwlock_init(&local->sub_if_lock);
+       INIT_LIST_HEAD(&local->sub_if_list);
+
+       INIT_DELAYED_WORK(&local->scan_work, ieee80211_sta_scan_work);
+       init_timer(&local->stat_timer);
+       local->stat_timer.function = ieee80211_stat_refresh;
+       local->stat_timer.data = (unsigned long) local;
+       ieee80211_rx_bss_list_init(mdev);
+
+       sta_info_init(local);
+
+       mdev->hard_start_xmit = ieee80211_master_start_xmit;
+       mdev->open = ieee80211_master_open;
+       mdev->stop = ieee80211_master_stop;
+       mdev->type = ARPHRD_IEEE80211;
+       mdev->hard_header_parse = header_parse_80211;
+
+       sdata->type = IEEE80211_IF_TYPE_AP;
+       sdata->dev = mdev;
+       sdata->local = local;
+       sdata->u.ap.force_unicast_rateidx = -1;
+       sdata->u.ap.max_ratectrl_rateidx = -1;
+       ieee80211_if_sdata_init(sdata);
+       list_add_tail(&sdata->list, &local->sub_if_list);
+
+       tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending,
+                    (unsigned long)local);
+       tasklet_disable(&local->tx_pending_tasklet);
+
+       tasklet_init(&local->tasklet,
+                    ieee80211_tasklet_handler,
+                    (unsigned long) local);
+       tasklet_disable(&local->tasklet);
+
+       skb_queue_head_init(&local->skb_queue);
+       skb_queue_head_init(&local->skb_queue_unreliable);
+
+       return local_to_hw(local);
+}
+EXPORT_SYMBOL(ieee80211_alloc_hw);
+
+int ieee80211_register_hw(struct ieee80211_hw *hw)
+{
+       struct ieee80211_local *local = hw_to_local(hw);
+       const char *name;
+       int result;
+
+       result = wiphy_register(local->hw.wiphy);
+       if (result < 0)
+               return result;
+
+       name = wiphy_dev(local->hw.wiphy)->driver->name;
+       local->hw.workqueue = create_singlethread_workqueue(name);
+       if (!local->hw.workqueue) {
+               result = -ENOMEM;
+               goto fail_workqueue;
+       }
+
+       debugfs_hw_add(local);
+
+       local->hw.conf.beacon_int = 1000;
+
+       local->wstats_flags |= local->hw.max_rssi ?
+                              IW_QUAL_LEVEL_UPDATED : IW_QUAL_LEVEL_INVALID;
+       local->wstats_flags |= local->hw.max_signal ?
+                              IW_QUAL_QUAL_UPDATED : IW_QUAL_QUAL_INVALID;
+       local->wstats_flags |= local->hw.max_noise ?
+                              IW_QUAL_NOISE_UPDATED : IW_QUAL_NOISE_INVALID;
+       if (local->hw.max_rssi < 0 || local->hw.max_noise < 0)
+               local->wstats_flags |= IW_QUAL_DBM;
+
+       result = sta_info_start(local);
+       if (result < 0)
+               goto fail_sta_info;
+
+       rtnl_lock();
+       result = dev_alloc_name(local->mdev, local->mdev->name);
+       if (result < 0)
+               goto fail_dev;
+
+       memcpy(local->mdev->dev_addr, local->hw.wiphy->perm_addr, ETH_ALEN);
+       SET_NETDEV_DEV(local->mdev, wiphy_dev(local->hw.wiphy));
+
+       result = register_netdevice(local->mdev);
+       if (result < 0)
+               goto fail_dev;
+
+       ieee80211_debugfs_add_netdev(IEEE80211_DEV_TO_SUB_IF(local->mdev));
+
+       result = ieee80211_init_rate_ctrl_alg(local, NULL);
+       if (result < 0) {
+               printk(KERN_DEBUG "%s: Failed to initialize rate control "
+                      "algorithm\n", local->mdev->name);
+               goto fail_rate;
+       }
+
+       result = ieee80211_wep_init(local);
+
+       if (result < 0) {
+               printk(KERN_DEBUG "%s: Failed to initialize wep\n",
+                      local->mdev->name);
+               goto fail_wep;
+       }
+
+       ieee80211_install_qdisc(local->mdev);
+
+       /* add one default STA interface */
+       result = ieee80211_if_add(local->mdev, "wlan%d", NULL,
+                                 IEEE80211_IF_TYPE_STA);
+       if (result)
+               printk(KERN_WARNING "%s: Failed to add default virtual iface\n",
+                      local->mdev->name);
+
+       local->reg_state = IEEE80211_DEV_REGISTERED;
+       rtnl_unlock();
+
+       ieee80211_led_init(local);
+
+       return 0;
+
+fail_wep:
+       rate_control_deinitialize(local);
+fail_rate:
+       ieee80211_debugfs_remove_netdev(IEEE80211_DEV_TO_SUB_IF(local->mdev));
+       unregister_netdevice(local->mdev);
+fail_dev:
+       rtnl_unlock();
+       sta_info_stop(local);
+fail_sta_info:
+       debugfs_hw_del(local);
+       destroy_workqueue(local->hw.workqueue);
+fail_workqueue:
+       wiphy_unregister(local->hw.wiphy);
+       return result;
+}
+EXPORT_SYMBOL(ieee80211_register_hw);
+
+int ieee80211_register_hwmode(struct ieee80211_hw *hw,
+                             struct ieee80211_hw_mode *mode)
+{
+       struct ieee80211_local *local = hw_to_local(hw);
+       struct ieee80211_rate *rate;
+       int i;
+
+       INIT_LIST_HEAD(&mode->list);
+       list_add_tail(&mode->list, &local->modes_list);
+
+       local->hw_modes |= (1 << mode->mode);
+       for (i = 0; i < mode->num_rates; i++) {
+               rate = &(mode->rates[i]);
+               rate->rate_inv = CHAN_UTIL_RATE_LCM / rate->rate;
+       }
+       ieee80211_prepare_rates(local, mode);
+
+       if (!local->oper_hw_mode) {
+               /* Default to this mode */
+      &nbs