+++ /dev/null
-From: Pablo Neira Ayuso <pablo@netfilter.org>
-Date: Wed, 29 Nov 2017 13:07:02 +0100
-Subject: [PATCH] src: add flowtable support
-
-This patch allows you to add, delete and list flowtable through the
-existing netlink interface.
-
-Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
----
- create mode 100644 examples/nft-flowtable-add.c
- create mode 100644 examples/nft-flowtable-del.c
- create mode 100644 examples/nft-flowtable-get.c
- create mode 100644 include/libnftnl/flowtable.h
- create mode 100644 src/flowtable.c
-
---- a/examples/Makefile.am
-+++ b/examples/Makefile.am
-@@ -25,6 +25,9 @@ check_PROGRAMS = nft-table-add \
- nft-obj-add \
- nft-obj-get \
- nft-obj-del \
-+ nft-flowtable-add \
-+ nft-flowtable-del \
-+ nft-flowtable-get \
- nft-ruleset-get \
- nft-ruleset-parse-file \
- nft-compat-get
-@@ -104,6 +107,15 @@ nft_obj_del_LDADD = ../src/libnftnl.la $
- nft_obj_get_SOURCES = nft-obj-get.c
- nft_obj_get_LDADD = ../src/libnftnl.la ${LIBMNL_LIBS}
-
-+nft_flowtable_add_SOURCES = nft-flowtable-add.c
-+nft_flowtable_add_LDADD = ../src/libnftnl.la ${LIBMNL_LIBS}
-+
-+nft_flowtable_del_SOURCES = nft-flowtable-del.c
-+nft_flowtable_del_LDADD = ../src/libnftnl.la ${LIBMNL_LIBS}
-+
-+nft_flowtable_get_SOURCES = nft-flowtable-get.c
-+nft_flowtable_get_LDADD = ../src/libnftnl.la ${LIBMNL_LIBS}
-+
- nft_ruleset_get_SOURCES = nft-ruleset-get.c
- nft_ruleset_get_LDADD = ../src/libnftnl.la ${LIBMNL_LIBS}
-
---- /dev/null
-+++ b/examples/nft-flowtable-add.c
-@@ -0,0 +1,136 @@
-+#include <stdlib.h>
-+#include <time.h>
-+#include <string.h>
-+#include <netinet/in.h>
-+
-+#include <linux/netfilter.h>
-+#include <linux/netfilter/nf_tables.h>
-+
-+#include <libmnl/libmnl.h>
-+#include <libnftnl/flowtable.h>
-+
-+static struct nftnl_flowtable *flowtable_add_parse(int argc, char *argv[])
-+{
-+ const char *dev_array[] = { "eth0", "tap0", NULL };
-+ struct nftnl_flowtable *t;
-+ int hooknum = 0;
-+
-+ if (strcmp(argv[4], "ingress") == 0)
-+ hooknum = NF_NETDEV_INGRESS;
-+ else {
-+ fprintf(stderr, "Unknown hook: %s\n", argv[4]);
-+ return NULL;
-+ }
-+
-+ t = nftnl_flowtable_alloc();
-+ if (t == NULL) {
-+ perror("OOM");
-+ return NULL;
-+ }
-+ nftnl_flowtable_set(t, NFTNL_FLOWTABLE_TABLE, argv[2]);
-+ nftnl_flowtable_set(t, NFTNL_FLOWTABLE_NAME, argv[3]);
-+ if (argc == 6) {
-+ nftnl_flowtable_set_u32(t, NFTNL_FLOWTABLE_HOOKNUM, hooknum);
-+ nftnl_flowtable_set_u32(t, NFTNL_FLOWTABLE_PRIO, atoi(argv[5]));
-+ }
-+ nftnl_flowtable_set_array(t, NFTNL_FLOWTABLE_DEVICES, dev_array);
-+
-+ return t;
-+}
-+
-+int main(int argc, char *argv[])
-+{
-+ struct mnl_socket *nl;
-+ char buf[MNL_SOCKET_BUFFER_SIZE];
-+ struct nlmsghdr *nlh;
-+ uint32_t portid, seq, flowtable_seq;
-+ int ret, family;
-+ struct nftnl_flowtable *t;
-+ struct mnl_nlmsg_batch *batch;
-+ int batching;
-+
-+ if (argc != 6) {
-+ fprintf(stderr, "Usage: %s <family> <table> <name> <hook> <prio>\n",
-+ argv[0]);
-+ exit(EXIT_FAILURE);
-+ }
-+
-+ if (strcmp(argv[1], "ip") == 0)
-+ family = NFPROTO_IPV4;
-+ else if (strcmp(argv[1], "ip6") == 0)
-+ family = NFPROTO_IPV6;
-+ else if (strcmp(argv[1], "bridge") == 0)
-+ family = NFPROTO_BRIDGE;
-+ else if (strcmp(argv[1], "arp") == 0)
-+ family = NFPROTO_ARP;
-+ else {
-+ fprintf(stderr, "Unknown family: ip, ip6, bridge, arp\n");
-+ exit(EXIT_FAILURE);
-+ }
-+
-+ t = flowtable_add_parse(argc, argv);
-+ if (t == NULL)
-+ exit(EXIT_FAILURE);
-+
-+ batching = nftnl_batch_is_supported();
-+ if (batching < 0) {
-+ perror("cannot talk to nfnetlink");
-+ exit(EXIT_FAILURE);
-+ }
-+
-+ seq = time(NULL);
-+ batch = mnl_nlmsg_batch_start(buf, sizeof(buf));
-+
-+ if (batching) {
-+ nftnl_batch_begin(mnl_nlmsg_batch_current(batch), seq++);
-+ mnl_nlmsg_batch_next(batch);
-+ }
-+
-+ flowtable_seq = seq;
-+ nlh = nftnl_flowtable_nlmsg_build_hdr(mnl_nlmsg_batch_current(batch),
-+ NFT_MSG_NEWFLOWTABLE, family,
-+ NLM_F_CREATE|NLM_F_ACK, seq++);
-+ nftnl_flowtable_nlmsg_build_payload(nlh, t);
-+ nftnl_flowtable_free(t);
-+ mnl_nlmsg_batch_next(batch);
-+
-+ if (batching) {
-+ nftnl_batch_end(mnl_nlmsg_batch_current(batch), seq++);
-+ mnl_nlmsg_batch_next(batch);
-+ }
-+
-+ nl = mnl_socket_open(NETLINK_NETFILTER);
-+ if (nl == NULL) {
-+ perror("mnl_socket_open");
-+ exit(EXIT_FAILURE);
-+ }
-+
-+ if (mnl_socket_bind(nl, 0, MNL_SOCKET_AUTOPID) < 0) {
-+ perror("mnl_socket_bind");
-+ exit(EXIT_FAILURE);
-+ }
-+ portid = mnl_socket_get_portid(nl);
-+
-+ if (mnl_socket_sendto(nl, mnl_nlmsg_batch_head(batch),
-+ mnl_nlmsg_batch_size(batch)) < 0) {
-+ perror("mnl_socket_send");
-+ exit(EXIT_FAILURE);
-+ }
-+
-+ mnl_nlmsg_batch_stop(batch);
-+
-+ ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
-+ while (ret > 0) {
-+ ret = mnl_cb_run(buf, ret, flowtable_seq, portid, NULL, NULL);
-+ if (ret <= 0)
-+ break;
-+ ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
-+ }
-+ if (ret == -1) {
-+ perror("error");
-+ exit(EXIT_FAILURE);
-+ }
-+ mnl_socket_close(nl);
-+
-+ return EXIT_SUCCESS;
-+}
---- /dev/null
-+++ b/examples/nft-flowtable-del.c
-@@ -0,0 +1,122 @@
-+#include <stdlib.h>
-+#include <time.h>
-+#include <string.h>
-+#include <netinet/in.h>
-+
-+#include <linux/netfilter.h>
-+#include <linux/netfilter/nf_tables.h>
-+
-+#include <libmnl/libmnl.h>
-+#include <libnftnl/flowtable.h>
-+
-+static struct nftnl_flowtable *flowtable_del_parse(int argc, char *argv[])
-+{
-+ struct nftnl_flowtable *t;
-+
-+ t = nftnl_flowtable_alloc();
-+ if (t == NULL) {
-+ perror("OOM");
-+ return NULL;
-+ }
-+
-+ nftnl_flowtable_set(t, NFTNL_FLOWTABLE_TABLE, argv[2]);
-+ nftnl_flowtable_set(t, NFTNL_FLOWTABLE_NAME, argv[3]);
-+
-+ return t;
-+}
-+
-+int main(int argc, char *argv[])
-+{
-+ struct mnl_socket *nl;
-+ struct mnl_nlmsg_batch *batch;
-+ char buf[MNL_SOCKET_BUFFER_SIZE];
-+ struct nlmsghdr *nlh;
-+ uint32_t portid, seq, flowtable_seq;
-+ struct nftnl_flowtable *t;
-+ int ret, family, batching;
-+
-+ if (argc != 4) {
-+ fprintf(stderr, "Usage: %s <family> <table> <flowtable>\n",
-+ argv[0]);
-+ exit(EXIT_FAILURE);
-+ }
-+
-+ if (strcmp(argv[1], "ip") == 0)
-+ family = NFPROTO_IPV4;
-+ else if (strcmp(argv[1], "ip6") == 0)
-+ family = NFPROTO_IPV6;
-+ else if (strcmp(argv[1], "bridge") == 0)
-+ family = NFPROTO_BRIDGE;
-+ else if (strcmp(argv[1], "arp") == 0)
-+ family = NFPROTO_ARP;
-+ else {
-+ fprintf(stderr, "Unknown family: ip, ip6, bridge, arp\n");
-+ exit(EXIT_FAILURE);
-+ }
-+
-+ t = flowtable_del_parse(argc, argv);
-+ if (t == NULL)
-+ exit(EXIT_FAILURE);
-+
-+ batching = nftnl_batch_is_supported();
-+ if (batching < 0) {
-+ perror("cannot talk to nfnetlink");
-+ exit(EXIT_FAILURE);
-+ }
-+
-+ seq = time(NULL);
-+ batch = mnl_nlmsg_batch_start(buf, sizeof(buf));
-+
-+ if (batching) {
-+ nftnl_batch_begin(mnl_nlmsg_batch_current(batch), seq++);
-+ mnl_nlmsg_batch_next(batch);
-+ }
-+
-+ flowtable_seq = seq;
-+ nlh = nftnl_flowtable_nlmsg_build_hdr(mnl_nlmsg_batch_current(batch),
-+ NFT_MSG_DELFLOWTABLE, family,
-+ NLM_F_ACK, seq++);
-+ nftnl_flowtable_nlmsg_build_payload(nlh, t);
-+ nftnl_flowtable_free(t);
-+ mnl_nlmsg_batch_next(batch);
-+
-+ if (batching) {
-+ nftnl_batch_end(mnl_nlmsg_batch_current(batch), seq++);
-+ mnl_nlmsg_batch_next(batch);
-+ }
-+
-+ nl = mnl_socket_open(NETLINK_NETFILTER);
-+ if (nl == NULL) {
-+ perror("mnl_socket_open");
-+ exit(EXIT_FAILURE);
-+ }
-+
-+ if (mnl_socket_bind(nl, 0, MNL_SOCKET_AUTOPID) < 0) {
-+ perror("mnl_socket_bind");
-+ exit(EXIT_FAILURE);
-+ }
-+ portid = mnl_socket_get_portid(nl);
-+
-+ if (mnl_socket_sendto(nl, mnl_nlmsg_batch_head(batch),
-+ mnl_nlmsg_batch_size(batch)) < 0) {
-+ perror("mnl_socket_send");
-+ exit(EXIT_FAILURE);
-+ }
-+
-+ mnl_nlmsg_batch_stop(batch);
-+
-+ ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
-+ while (ret > 0) {
-+ ret = mnl_cb_run(buf, ret, flowtable_seq, portid, NULL, NULL);
-+ if (ret <= 0)
-+ break;
-+ ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
-+ }
-+ if (ret == -1) {
-+ perror("error");
-+ exit(EXIT_FAILURE);
-+ }
-+ mnl_socket_close(nl);
-+
-+ return EXIT_SUCCESS;
-+}
---- /dev/null
-+++ b/examples/nft-flowtable-get.c
-@@ -0,0 +1,121 @@
-+#include <stdlib.h>
-+#include <time.h>
-+#include <string.h>
-+#include <netinet/in.h>
-+
-+#include <linux/netfilter.h>
-+#include <linux/netfilter/nf_tables.h>
-+
-+#include <libmnl/libmnl.h>
-+#include <libnftnl/flowtable.h>
-+
-+static int table_cb(const struct nlmsghdr *nlh, void *data)
-+{
-+ struct nftnl_flowtable *t;
-+ char buf[4096];
-+ uint32_t *type = data;
-+
-+ t = nftnl_flowtable_alloc();
-+ if (t == NULL) {
-+ perror("OOM");
-+ goto err;
-+ }
-+
-+ if (nftnl_flowtable_nlmsg_parse(nlh, t) < 0) {
-+ perror("nftnl_flowtable_nlmsg_parse");
-+ goto err_free;
-+ }
-+
-+ nftnl_flowtable_snprintf(buf, sizeof(buf), t, *type, 0);
-+ printf("%s\n", buf);
-+
-+err_free:
-+ nftnl_flowtable_free(t);
-+err:
-+ return MNL_CB_OK;
-+}
-+
-+int main(int argc, char *argv[])
-+{
-+ struct mnl_socket *nl;
-+ char buf[MNL_SOCKET_BUFFER_SIZE];
-+ struct nlmsghdr *nlh;
-+ uint32_t portid, seq, type = NFTNL_OUTPUT_DEFAULT;
-+ struct nftnl_flowtable *t = NULL;
-+ int ret, family;
-+
-+ seq = time(NULL);
-+
-+ if (argc < 2 || argc > 5) {
-+ fprintf(stderr, "Usage: %s <family> [<table> <flowtable>] [json]\n",
-+ argv[0]);
-+ exit(EXIT_FAILURE);
-+ }
-+
-+ if (strcmp(argv[1], "ip") == 0)
-+ family = NFPROTO_IPV4;
-+ else if (strcmp(argv[1], "ip6") == 0)
-+ family = NFPROTO_IPV6;
-+ else if (strcmp(argv[1], "bridge") == 0)
-+ family = NFPROTO_BRIDGE;
-+ else if (strcmp(argv[1], "arp") == 0)
-+ family = NFPROTO_ARP;
-+ else if (strcmp(argv[1], "unspec") == 0)
-+ family = NFPROTO_UNSPEC;
-+ else {
-+ fprintf(stderr, "Unknown family: ip, ip6, bridge, arp, unspec\n");
-+ exit(EXIT_FAILURE);
-+ }
-+
-+ if (argc >= 4) {
-+ t = nftnl_flowtable_alloc();
-+ if (t == NULL) {
-+ perror("OOM");
-+ exit(EXIT_FAILURE);
-+ }
-+ nlh = nftnl_flowtable_nlmsg_build_hdr(buf, NFT_MSG_GETFLOWTABLE, family,
-+ NLM_F_ACK, seq);
-+ nftnl_flowtable_set(t, NFTNL_FLOWTABLE_TABLE, argv[2]);
-+ nftnl_flowtable_set(t, NFTNL_FLOWTABLE_NAME, argv[3]);
-+ nftnl_flowtable_nlmsg_build_payload(nlh, t);
-+ nftnl_flowtable_free(t);
-+ } else if (argc >= 2) {
-+ nlh = nftnl_flowtable_nlmsg_build_hdr(buf, NFT_MSG_GETFLOWTABLE, family,
-+ NLM_F_DUMP, seq);
-+ }
-+
-+ if (strcmp(argv[argc-1], "json") == 0)
-+ type = NFTNL_OUTPUT_JSON;
-+
-+ nl = mnl_socket_open(NETLINK_NETFILTER);
-+ if (nl == NULL) {
-+ perror("mnl_socket_open");
-+ exit(EXIT_FAILURE);
-+ }
-+
-+ if (mnl_socket_bind(nl, 0, MNL_SOCKET_AUTOPID) < 0) {
-+ perror("mnl_socket_bind");
-+ exit(EXIT_FAILURE);
-+ }
-+ portid = mnl_socket_get_portid(nl);
-+
-+ if (mnl_socket_sendto(nl, nlh, nlh->nlmsg_len) < 0) {
-+ perror("mnl_socket_send");
-+ exit(EXIT_FAILURE);
-+ }
-+
-+ ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
-+ while (ret > 0) {
-+ ret = mnl_cb_run(buf, ret, seq, portid, table_cb, &type);
-+ if (ret <= 0)
-+ break;
-+ ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
-+ }
-+ if (ret == -1) {
-+ perror("error");
-+ exit(EXIT_FAILURE);
-+ }
-+ mnl_socket_close(nl);
-+
-+ return EXIT_SUCCESS;
-+}
---- a/include/libnftnl/Makefile.am
-+++ b/include/libnftnl/Makefile.am
-@@ -6,6 +6,7 @@ pkginclude_HEADERS = batch.h \
- rule.h \
- expr.h \
- set.h \
-+ flowtable.h \
- ruleset.h \
- common.h \
- udata.h \
---- /dev/null
-+++ b/include/libnftnl/flowtable.h
-@@ -0,0 +1,81 @@
-+#ifndef _LIBNFTNL_FLOWTABLE_H_
-+#define _LIBNFTNL_FLOWTABLE_H_
-+
-+#include <stdio.h>
-+#include <stdint.h>
-+#include <stdbool.h>
-+#include <sys/types.h>
-+
-+#include <libnftnl/common.h>
-+
-+#ifdef __cplusplus
-+extern "C" {
-+#endif
-+
-+struct nftnl_flowtable;
-+
-+struct nftnl_flowtable *nftnl_flowtable_alloc(void);
-+void nftnl_flowtable_free(const struct nftnl_flowtable *);
-+
-+enum nftnl_flowtable_attr {
-+ NFTNL_FLOWTABLE_NAME = 0,
-+ NFTNL_FLOWTABLE_FAMILY,
-+ NFTNL_FLOWTABLE_TABLE,
-+ NFTNL_FLOWTABLE_HOOKNUM,
-+ NFTNL_FLOWTABLE_PRIO = 4,
-+ NFTNL_FLOWTABLE_USE,
-+ NFTNL_FLOWTABLE_DEVICES,
-+ __NFTNL_FLOWTABLE_MAX
-+};
-+#define NFTNL_FLOWTABLE_MAX (__NFTNL_FLOWTABLE_MAX - 1)
-+
-+bool nftnl_flowtable_is_set(const struct nftnl_flowtable *c, uint16_t attr);
-+void nftnl_flowtable_unset(struct nftnl_flowtable *c, uint16_t attr);
-+void nftnl_flowtable_set(struct nftnl_flowtable *t, uint16_t attr, const void *data);
-+int nftnl_flowtable_set_data(struct nftnl_flowtable *t, uint16_t attr,
-+ const void *data, uint32_t data_len);
-+void nftnl_flowtable_set_u32(struct nftnl_flowtable *t, uint16_t attr, uint32_t data);
-+void nftnl_flowtable_set_s32(struct nftnl_flowtable *t, uint16_t attr, int32_t data);
-+int nftnl_flowtable_set_str(struct nftnl_flowtable *t, uint16_t attr, const char *str);
-+void nftnl_flowtable_set_array(struct nftnl_flowtable *t, uint16_t attr, const char **data);
-+
-+const void *nftnl_flowtable_get(const struct nftnl_flowtable *c, uint16_t attr);
-+const void *nftnl_flowtable_get_data(const struct nftnl_flowtable *c, uint16_t attr,
-+ uint32_t *data_len);
-+const char *nftnl_flowtable_get_str(const struct nftnl_flowtable *c, uint16_t attr);
-+uint32_t nftnl_flowtable_get_u32(const struct nftnl_flowtable *c, uint16_t attr);
-+int32_t nftnl_flowtable_get_s32(const struct nftnl_flowtable *c, uint16_t attr);
-+const char **nftnl_flowtable_get_array(const struct nftnl_flowtable *t, uint16_t attr);
-+
-+struct nlmsghdr;
-+
-+void nftnl_flowtable_nlmsg_build_payload(struct nlmsghdr *nlh, const struct nftnl_flowtable *t);
-+
-+int nftnl_flowtable_parse(struct nftnl_flowtable *c, enum nftnl_parse_type type,
-+ const char *data, struct nftnl_parse_err *err);
-+int nftnl_flowtable_parse_file(struct nftnl_flowtable *c, enum nftnl_parse_type type,
-+ FILE *fp, struct nftnl_parse_err *err);
-+int nftnl_flowtable_snprintf(char *buf, size_t size, const struct nftnl_flowtable *t, uint32_t type, uint32_t flags);
-+int nftnl_flowtable_fprintf(FILE *fp, const struct nftnl_flowtable *c, uint32_t type, uint32_t flags);
-+
-+#define nftnl_flowtable_nlmsg_build_hdr nftnl_nlmsg_build_hdr
-+int nftnl_flowtable_nlmsg_parse(const struct nlmsghdr *nlh, struct nftnl_flowtable *t);
-+
-+struct nftnl_flowtable_list;
-+
-+struct nftnl_flowtable_list *nftnl_flowtable_list_alloc(void);
-+void nftnl_flowtable_list_free(struct nftnl_flowtable_list *list);
-+int nftnl_flowtable_list_is_empty(const struct nftnl_flowtable_list *list);
-+void nftnl_flowtable_list_add(struct nftnl_flowtable *s,
-+ struct nftnl_flowtable_list *list);
-+void nftnl_flowtable_list_add_tail(struct nftnl_flowtable *s,
-+ struct nftnl_flowtable_list *list);
-+void nftnl_flowtable_list_del(struct nftnl_flowtable *s);
-+int nftnl_flowtable_list_foreach(struct nftnl_flowtable_list *flowtable_list,
-+ int (*cb)(struct nftnl_flowtable *t, void *data), void *data);
-+
-+#ifdef __cplusplus
-+} /* extern "C" */
-+#endif
-+
-+#endif /* _LIBNFTNL_FLOWTABLE_H_ */
---- a/include/linux/netfilter/nf_tables.h
-+++ b/include/linux/netfilter/nf_tables.h
-@@ -90,6 +90,9 @@ enum nft_verdicts {
- * @NFT_MSG_GETOBJ: get a stateful object (enum nft_obj_attributes)
- * @NFT_MSG_DELOBJ: delete a stateful object (enum nft_obj_attributes)
- * @NFT_MSG_GETOBJ_RESET: get and reset a stateful object (enum nft_obj_attributes)
-+ * @NFT_MSG_NEWFLOWTABLE: add new flow table (enum nft_flowtable_attributes)
-+ * @NFT_MSG_GETFLOWTABLE: get flow table (enum nft_flowtable_attributes)
-+ * @NFT_MSG_DELFLOWTABLE: delete flow table (enum nft_flowtable_attributes)
- */
- enum nf_tables_msg_types {
- NFT_MSG_NEWTABLE,
-@@ -114,6 +117,9 @@ enum nf_tables_msg_types {
- NFT_MSG_GETOBJ,
- NFT_MSG_DELOBJ,
- NFT_MSG_GETOBJ_RESET,
-+ NFT_MSG_NEWFLOWTABLE,
-+ NFT_MSG_GETFLOWTABLE,
-+ NFT_MSG_DELFLOWTABLE,
- NFT_MSG_MAX,
- };
-
-@@ -1303,6 +1309,53 @@ enum nft_object_attributes {
- #define NFTA_OBJ_MAX (__NFTA_OBJ_MAX - 1)
-
- /**
-+ * enum nft_flowtable_attributes - nf_tables flow table netlink attributes
-+ *
-+ * @NFTA_FLOWTABLE_TABLE: name of the table containing the expression (NLA_STRING)
-+ * @NFTA_FLOWTABLE_NAME: name of this flow table (NLA_STRING)
-+ * @NFTA_FLOWTABLE_HOOK: netfilter hook configuration(NLA_U32)
-+ * @NFTA_FLOWTABLE_USE: number of references to this flow table (NLA_U32)
-+ */
-+enum nft_flowtable_attributes {
-+ NFTA_FLOWTABLE_UNSPEC,
-+ NFTA_FLOWTABLE_TABLE,
-+ NFTA_FLOWTABLE_NAME,
-+ NFTA_FLOWTABLE_HOOK,
-+ NFTA_FLOWTABLE_USE,
-+ __NFTA_FLOWTABLE_MAX
-+};
-+#define NFTA_FLOWTABLE_MAX (__NFTA_FLOWTABLE_MAX - 1)
-+
-+/**
-+ * enum nft_flowtable_hook_attributes - nf_tables flow table hook netlink attributes
-+ *
-+ * @NFTA_FLOWTABLE_HOOK_NUM: netfilter hook number (NLA_U32)
-+ * @NFTA_FLOWTABLE_HOOK_PRIORITY: netfilter hook priority (NLA_U32)
-+ * @NFTA_FLOWTABLE_HOOK_DEVS: input devices this flow table is bound to (NLA_NESTED)
-+ */
-+enum nft_flowtable_hook_attributes {
-+ NFTA_FLOWTABLE_HOOK_UNSPEC,
-+ NFTA_FLOWTABLE_HOOK_NUM,
-+ NFTA_FLOWTABLE_HOOK_PRIORITY,
-+ NFTA_FLOWTABLE_HOOK_DEVS,
-+ __NFTA_FLOWTABLE_HOOK_MAX
-+};
-+#define NFTA_FLOWTABLE_HOOK_MAX (__NFTA_FLOWTABLE_HOOK_MAX - 1)
-+
-+/**
-+ * enum nft_device_attributes - nf_tables device netlink attributes
-+ *
-+ * @NFTA_DEVICE_NAME: name of this device (NLA_STRING)
-+ */
-+enum nft_devices_attributes {
-+ NFTA_DEVICE_UNSPEC,
-+ NFTA_DEVICE_NAME,
-+ __NFTA_DEVICE_MAX
-+};
-+#define NFTA_DEVICE_MAX (__NFTA_DEVICE_MAX - 1)
-+
-+
-+/**
- * enum nft_trace_attributes - nf_tables trace netlink attributes
- *
- * @NFTA_TRACE_TABLE: name of the table (NLA_STRING)
---- a/src/Makefile.am
-+++ b/src/Makefile.am
-@@ -8,6 +8,7 @@ libnftnl_la_LDFLAGS = -Wl,--version-scri
- libnftnl_la_SOURCES = utils.c \
- batch.c \
- buffer.c \
-+ flowtable.c \
- common.c \
- gen.c \
- table.c \
---- /dev/null
-+++ b/src/flowtable.c
-@@ -0,0 +1,793 @@
-+#include "internal.h"
-+
-+#include <time.h>
-+#include <endian.h>
-+#include <stdint.h>
-+#include <stdlib.h>
-+#include <limits.h>
-+#include <string.h>
-+#include <netinet/in.h>
-+#include <errno.h>
-+#include <inttypes.h>
-+
-+#include <libmnl/libmnl.h>
-+#include <linux/netfilter/nfnetlink.h>
-+#include <linux/netfilter/nf_tables.h>
-+#include <linux/netfilter.h>
-+#include <linux/netfilter_arp.h>
-+
-+#include <libnftnl/flowtable.h>
-+#include <buffer.h>
-+
-+struct nftnl_flowtable {
-+ struct list_head head;
-+ const char *name;
-+ const char *table;
-+ int family;
-+ uint32_t hooknum;
-+ int32_t prio;
-+ const char **dev_array;
-+ uint32_t dev_array_len;
-+ uint32_t use;
-+ uint32_t flags;
-+};
-+
-+struct nftnl_flowtable *nftnl_flowtable_alloc(void)
-+{
-+ return calloc(1, sizeof(struct nftnl_flowtable));
-+}
-+EXPORT_SYMBOL(nftnl_flowtable_alloc);
-+
-+void nftnl_flowtable_free(const struct nftnl_flowtable *c)
-+{
-+ int i;
-+
-+ if (c->flags & (1 << NFTNL_FLOWTABLE_NAME))
-+ xfree(c->name);
-+ if (c->flags & (1 << NFTNL_FLOWTABLE_TABLE))
-+ xfree(c->table);
-+ if (c->flags & (1 << NFTNL_FLOWTABLE_DEVICES)) {
-+ for (i = 0; i < c->dev_array_len; i++)
-+ xfree(c->dev_array[i]);
-+
-+ xfree(c->dev_array);
-+ }
-+ xfree(c);
-+}
-+EXPORT_SYMBOL(nftnl_flowtable_free);
-+
-+bool nftnl_flowtable_is_set(const struct nftnl_flowtable *c, uint16_t attr)
-+{
-+ return c->flags & (1 << attr);
-+}
-+EXPORT_SYMBOL(nftnl_flowtable_is_set);
-+
-+void nftnl_flowtable_unset(struct nftnl_flowtable *c, uint16_t attr)
-+{
-+ int i;
-+
-+ if (!(c->flags & (1 << attr)))
-+ return;
-+
-+ switch (attr) {
-+ case NFTNL_FLOWTABLE_NAME:
-+ xfree(c->name);
-+ break;
-+ case NFTNL_FLOWTABLE_TABLE:
-+ xfree(c->table);
-+ break;
-+ case NFTNL_FLOWTABLE_HOOKNUM:
-+ case NFTNL_FLOWTABLE_PRIO:
-+ case NFTNL_FLOWTABLE_USE:
-+ case NFTNL_FLOWTABLE_FAMILY:
-+ break;
-+ case NFTNL_FLOWTABLE_DEVICES:
-+ for (i = 0; i < c->dev_array_len; i++) {
-+ xfree(c->dev_array[i]);
-+ xfree(c->dev_array);
-+ }
-+ break;
-+ default:
-+ return;
-+ }
-+
-+ c->flags &= ~(1 << attr);
-+}
-+EXPORT_SYMBOL(nftnl_flowtable_unset);
-+
-+static uint32_t nftnl_flowtable_validate[NFTNL_FLOWTABLE_MAX + 1] = {
-+ [NFTNL_FLOWTABLE_HOOKNUM] = sizeof(uint32_t),
-+ [NFTNL_FLOWTABLE_PRIO] = sizeof(int32_t),
-+ [NFTNL_FLOWTABLE_FAMILY] = sizeof(uint32_t),
-+};
-+
-+int nftnl_flowtable_set_data(struct nftnl_flowtable *c, uint16_t attr,
-+ const void *data, uint32_t data_len)
-+{
-+ const char **dev_array;
-+ int len = 0, i;
-+
-+ nftnl_assert_attr_exists(attr, NFTNL_FLOWTABLE_MAX);
-+ nftnl_assert_validate(data, nftnl_flowtable_validate, attr, data_len);
-+
-+ switch(attr) {
-+ case NFTNL_FLOWTABLE_NAME:
-+ if (c->flags & (1 << NFTNL_FLOWTABLE_NAME))
-+ xfree(c->name);
-+
-+ c->name = strdup(data);
-+ if (!c->name)
-+ return -1;
-+ break;
-+ case NFTNL_FLOWTABLE_TABLE:
-+ if (c->flags & (1 << NFTNL_FLOWTABLE_TABLE))
-+ xfree(c->table);
-+
-+ c->table = strdup(data);
-+ if (!c->table)
-+ return -1;
-+ break;
-+ case NFTNL_FLOWTABLE_HOOKNUM:
-+ memcpy(&c->hooknum, data, sizeof(c->hooknum));
-+ break;
-+ case NFTNL_FLOWTABLE_PRIO:
-+ memcpy(&c->prio, data, sizeof(c->prio));
-+ break;
-+ case NFTNL_FLOWTABLE_FAMILY:
-+ memcpy(&c->family, data, sizeof(c->family));
-+ break;
-+ case NFTNL_FLOWTABLE_DEVICES:
-+ dev_array = (const char **)data;
-+ while (dev_array[len] != NULL)
-+ len++;
-+
-+ if (c->flags & (1 << NFTNL_FLOWTABLE_DEVICES)) {
-+ for (i = 0; i < c->dev_array_len; i++) {
-+ xfree(c->dev_array[i]);
-+ xfree(c->dev_array);
-+ }
-+ }
-+
-+ c->dev_array = calloc(len + 1, sizeof(char *));
-+ if (!c->dev_array)
-+ return -1;
-+
-+ for (i = 0; i < len; i++)
-+ c->dev_array[i] = strdup(dev_array[i]);
-+
-+ c->dev_array_len = len;
-+ break;
-+ }
-+ c->flags |= (1 << attr);
-+ return 0;
-+}
-+EXPORT_SYMBOL(nftnl_flowtable_set_data);
-+
-+void nftnl_flowtable_set(struct nftnl_flowtable *c, uint16_t attr, const void *data)
-+{
-+ nftnl_flowtable_set_data(c, attr, data, nftnl_flowtable_validate[attr]);
-+}
-+EXPORT_SYMBOL(nftnl_flowtable_set);
-+
-+void nftnl_flowtable_set_array(struct nftnl_flowtable *c, uint16_t attr, const char **data)
-+{
-+ nftnl_flowtable_set_data(c, attr, &data[0], nftnl_flowtable_validate[attr]);
-+}
-+EXPORT_SYMBOL(nftnl_flowtable_set_array);
-+
-+void nftnl_flowtable_set_u32(struct nftnl_flowtable *c, uint16_t attr, uint32_t data)
-+{
-+ nftnl_flowtable_set_data(c, attr, &data, sizeof(uint32_t));
-+}
-+EXPORT_SYMBOL(nftnl_flowtable_set_u32);
-+
-+void nftnl_flowtable_set_s32(struct nftnl_flowtable *c, uint16_t attr, int32_t data)
-+{
-+ nftnl_flowtable_set_data(c, attr, &data, sizeof(int32_t));
-+}
-+EXPORT_SYMBOL(nftnl_flowtable_set_s32);
-+
-+int nftnl_flowtable_set_str(struct nftnl_flowtable *c, uint16_t attr, const char *str)
-+{
-+ return nftnl_flowtable_set_data(c, attr, str, strlen(str) + 1);
-+}
-+EXPORT_SYMBOL(nftnl_flowtable_set_str);
-+
-+const void *nftnl_flowtable_get_data(const struct nftnl_flowtable *c,
-+ uint16_t attr, uint32_t *data_len)
-+{
-+ if (!(c->flags & (1 << attr)))
-+ return NULL;
-+
-+ switch(attr) {
-+ case NFTNL_FLOWTABLE_NAME:
-+ *data_len = strlen(c->name) + 1;
-+ return c->name;
-+ case NFTNL_FLOWTABLE_TABLE:
-+ *data_len = strlen(c->table) + 1;
-+ return c->table;
-+ case NFTNL_FLOWTABLE_HOOKNUM:
-+ *data_len = sizeof(uint32_t);
-+ return &c->hooknum;
-+ case NFTNL_FLOWTABLE_PRIO:
-+ *data_len = sizeof(int32_t);
-+ return &c->prio;
-+ case NFTNL_FLOWTABLE_FAMILY:
-+ *data_len = sizeof(int32_t);
-+ return &c->family;
-+ case NFTNL_FLOWTABLE_DEVICES:
-+ return &c->dev_array[0];
-+ }
-+ return NULL;
-+}
-+EXPORT_SYMBOL(nftnl_flowtable_get_data);
-+
-+const void *nftnl_flowtable_get(const struct nftnl_flowtable *c, uint16_t attr)
-+{
-+ uint32_t data_len;
-+ return nftnl_flowtable_get_data(c, attr, &data_len);
-+}
-+EXPORT_SYMBOL(nftnl_flowtable_get);
-+
-+const char *nftnl_flowtable_get_str(const struct nftnl_flowtable *c, uint16_t attr)
-+{
-+ return nftnl_flowtable_get(c, attr);
-+}
-+EXPORT_SYMBOL(nftnl_flowtable_get_str);
-+
-+uint32_t nftnl_flowtable_get_u32(const struct nftnl_flowtable *c, uint16_t attr)
-+{
-+ uint32_t data_len;
-+ const uint32_t *val = nftnl_flowtable_get_data(c, attr, &data_len);
-+
-+ nftnl_assert(val, attr, data_len == sizeof(uint32_t));
-+
-+ return val ? *val : 0;
-+}
-+EXPORT_SYMBOL(nftnl_flowtable_get_u32);
-+
-+int32_t nftnl_flowtable_get_s32(const struct nftnl_flowtable *c, uint16_t attr)
-+{
-+ uint32_t data_len;
-+ const int32_t *val = nftnl_flowtable_get_data(c, attr, &data_len);
-+
-+ nftnl_assert(val, attr, data_len == sizeof(int32_t));
-+
-+ return val ? *val : 0;
-+}
-+EXPORT_SYMBOL(nftnl_flowtable_get_s32);
-+
-+const char **nftnl_flowtable_get_array(const struct nftnl_flowtable *c, uint16_t attr)
-+{
-+ return (const char **)nftnl_flowtable_get(c, attr);
-+}
-+EXPORT_SYMBOL(nftnl_flowtable_get_array);
-+
-+void nftnl_flowtable_nlmsg_build_payload(struct nlmsghdr *nlh,
-+ const struct nftnl_flowtable *c)
-+{
-+ int i;
-+
-+ if (c->flags & (1 << NFTNL_FLOWTABLE_TABLE))
-+ mnl_attr_put_strz(nlh, NFTA_FLOWTABLE_TABLE, c->table);
-+ if (c->flags & (1 << NFTNL_FLOWTABLE_NAME))
-+ mnl_attr_put_strz(nlh, NFTA_FLOWTABLE_NAME, c->name);
-+ if ((c->flags & (1 << NFTNL_FLOWTABLE_HOOKNUM)) &&
-+ (c->flags & (1 << NFTNL_FLOWTABLE_PRIO))) {
-+ struct nlattr *nest;
-+
-+ nest = mnl_attr_nest_start(nlh, NFTA_FLOWTABLE_HOOK);
-+ mnl_attr_put_u32(nlh, NFTA_FLOWTABLE_HOOK_NUM, htonl(c->hooknum));
-+ mnl_attr_put_u32(nlh, NFTA_FLOWTABLE_HOOK_PRIORITY, htonl(c->prio));
-+ if (c->flags & (1 << NFTNL_FLOWTABLE_DEVICES)) {
-+ struct nlattr *nest_dev;
-+
-+ nest_dev = mnl_attr_nest_start(nlh,
-+ NFTA_FLOWTABLE_HOOK_DEVS);
-+ for (i = 0; i < c->dev_array_len; i++)
-+ mnl_attr_put_strz(nlh, NFTA_DEVICE_NAME,
-+ c->dev_array[i]);
-+ mnl_attr_nest_end(nlh, nest_dev);
-+ }
-+ mnl_attr_nest_end(nlh, nest);
-+ }
-+ if (c->flags & (1 << NFTNL_FLOWTABLE_USE))
-+ mnl_attr_put_u32(nlh, NFTA_FLOWTABLE_USE, htonl(c->use));
-+}
-+EXPORT_SYMBOL(nftnl_flowtable_nlmsg_build_payload);
-+
-+static int nftnl_flowtable_parse_attr_cb(const struct nlattr *attr, void *data)
-+{
-+ const struct nlattr **tb = data;
-+ int type = mnl_attr_get_type(attr);
-+
-+ if (mnl_attr_type_valid(attr, NFTA_FLOWTABLE_MAX) < 0)
-+ return MNL_CB_OK;
-+
-+ switch(type) {
-+ case NFTA_FLOWTABLE_NAME:
-+ case NFTA_FLOWTABLE_TABLE:
-+ if (mnl_attr_validate(attr, MNL_TYPE_STRING) < 0)
-+ abi_breakage();
-+ break;
-+ case NFTA_FLOWTABLE_HOOK:
-+ if (mnl_attr_validate(attr, MNL_TYPE_NESTED) < 0)
-+ abi_breakage();
-+ break;
-+ case NFTA_FLOWTABLE_USE:
-+ if (mnl_attr_validate(attr, MNL_TYPE_U32) < 0)
-+ abi_breakage();
-+ break;
-+ }
-+
-+ tb[type] = attr;
-+ return MNL_CB_OK;
-+}
-+
-+static int nftnl_flowtable_parse_hook_cb(const struct nlattr *attr, void *data)
-+{
-+ const struct nlattr **tb = data;
-+ int type = mnl_attr_get_type(attr);
-+
-+ if (mnl_attr_type_valid(attr, NFTA_FLOWTABLE_HOOK_MAX) < 0)
-+ return MNL_CB_OK;
-+
-+ switch(type) {
-+ case NFTA_FLOWTABLE_HOOK_NUM:
-+ case NFTA_FLOWTABLE_HOOK_PRIORITY:
-+ if (mnl_attr_validate(attr, MNL_TYPE_U32) < 0)
-+ abi_breakage();
-+ break;
-+ case NFTA_FLOWTABLE_HOOK_DEVS:
-+ if (mnl_attr_validate(attr, MNL_TYPE_NESTED) < 0)
-+ abi_breakage();
-+ break;
-+ }
-+
-+ tb[type] = attr;
-+ return MNL_CB_OK;
-+}
-+
-+static int nftnl_flowtable_parse_devs(struct nlattr *nest,
-+ struct nftnl_flowtable *c)
-+{
-+ struct nlattr *attr;
-+ char *dev_array[8];
-+ int len = 0, i;
-+
-+ mnl_attr_for_each_nested(attr, nest) {
-+ if (mnl_attr_get_type(attr) != NFTA_DEVICE_NAME)
-+ return -1;
-+ dev_array[len++] = strdup(mnl_attr_get_str(attr));
-+ if (len >= 8)
-+ break;
-+ }
-+
-+ if (!len)
-+ return -1;
-+
-+ c->dev_array = calloc(len + 1, sizeof(char *));
-+ if (!c->dev_array)
-+ return -1;
-+
-+ c->dev_array_len = len;
-+
-+ for (i = 0; i < len; i++)
-+ c->dev_array[i] = strdup(dev_array[i]);
-+
-+ return 0;
-+}
-+
-+static int nftnl_flowtable_parse_hook(struct nlattr *attr, struct nftnl_flowtable *c)
-+{
-+ struct nlattr *tb[NFTA_FLOWTABLE_HOOK_MAX + 1] = {};
-+ int ret;
-+
-+ if (mnl_attr_parse_nested(attr, nftnl_flowtable_parse_hook_cb, tb) < 0)
-+ return -1;
-+
-+ if (tb[NFTA_FLOWTABLE_HOOK_NUM]) {
-+ c->hooknum = ntohl(mnl_attr_get_u32(tb[NFTA_FLOWTABLE_HOOK_NUM]));
-+ c->flags |= (1 << NFTNL_FLOWTABLE_HOOKNUM);
-+ }
-+ if (tb[NFTA_FLOWTABLE_HOOK_PRIORITY]) {
-+ c->prio = ntohl(mnl_attr_get_u32(tb[NFTA_FLOWTABLE_HOOK_PRIORITY]));
-+ c->flags |= (1 << NFTNL_FLOWTABLE_PRIO);
-+ }
-+ if (tb[NFTA_FLOWTABLE_HOOK_DEVS]) {
-+ ret = nftnl_flowtable_parse_devs(tb[NFTA_FLOWTABLE_HOOK_DEVS], c);
-+ if (ret < 0)
-+ return -1;
-+ c->flags |= (1 << NFTNL_FLOWTABLE_DEVICES);
-+ }
-+
-+ return 0;
-+}
-+
-+int nftnl_flowtable_nlmsg_parse(const struct nlmsghdr *nlh, struct nftnl_flowtable *c)
-+{
-+ struct nlattr *tb[NFTA_FLOWTABLE_MAX + 1] = {};
-+ struct nfgenmsg *nfg = mnl_nlmsg_get_payload(nlh);
-+ int ret = 0;
-+
-+ if (mnl_attr_parse(nlh, sizeof(*nfg), nftnl_flowtable_parse_attr_cb, tb) < 0)
-+ return -1;
-+
-+ if (tb[NFTA_FLOWTABLE_NAME]) {
-+ if (c->flags & (1 << NFTNL_FLOWTABLE_NAME))
-+ xfree(c->name);
-+ c->name = strdup(mnl_attr_get_str(tb[NFTA_FLOWTABLE_NAME]));
-+ if (!c->name)
-+ return -1;
-+ c->flags |= (1 << NFTNL_FLOWTABLE_NAME);
-+ }
-+ if (tb[NFTA_FLOWTABLE_TABLE]) {
-+ if (c->flags & (1 << NFTNL_FLOWTABLE_TABLE))
-+ xfree(c->table);
-+ c->table = strdup(mnl_attr_get_str(tb[NFTA_FLOWTABLE_TABLE]));
-+ if (!c->table)
-+ return -1;
-+ c->flags |= (1 << NFTNL_FLOWTABLE_TABLE);
-+ }
-+ if (tb[NFTA_FLOWTABLE_HOOK]) {
-+ ret = nftnl_flowtable_parse_hook(tb[NFTA_FLOWTABLE_HOOK], c);
-+ if (ret < 0)
-+ return ret;
-+ }
-+ if (tb[NFTA_FLOWTABLE_USE]) {
-+ c->use = ntohl(mnl_attr_get_u32(tb[NFTA_FLOWTABLE_USE]));
-+ c->flags |= (1 << NFTNL_FLOWTABLE_USE);
-+ }
-+
-+ c->family = nfg->nfgen_family;
-+ c->flags |= (1 << NFTNL_FLOWTABLE_FAMILY);
-+
-+ return ret;
-+}
-+EXPORT_SYMBOL(nftnl_flowtable_nlmsg_parse);
-+
-+static const char *nftnl_hooknum2str(int family, int hooknum)
-+{
-+ switch (family) {
-+ case NFPROTO_IPV4:
-+ case NFPROTO_IPV6:
-+ case NFPROTO_INET:
-+ case NFPROTO_BRIDGE:
-+ switch (hooknum) {
-+ case NF_INET_PRE_ROUTING:
-+ return "prerouting";
-+ case NF_INET_LOCAL_IN:
-+ return "input";
-+ case NF_INET_FORWARD:
-+ return "forward";
-+ case NF_INET_LOCAL_OUT:
-+ return "output";
-+ case NF_INET_POST_ROUTING:
-+ return "postrouting";
-+ }
-+ break;
-+ case NFPROTO_ARP:
-+ switch (hooknum) {
-+ case NF_ARP_IN:
-+ return "input";
-+ case NF_ARP_OUT:
-+ return "output";
-+ case NF_ARP_FORWARD:
-+ return "forward";
-+ }
-+ break;
-+ case NFPROTO_NETDEV:
-+ switch (hooknum) {
-+ case NF_NETDEV_INGRESS:
-+ return "ingress";
-+ }
-+ break;
-+ }
-+ return "unknown";
-+}
-+
-+static inline int nftnl_str2hooknum(int family, const char *hook)
-+{
-+ int hooknum;
-+
-+ for (hooknum = 0; hooknum < NF_INET_NUMHOOKS; hooknum++) {
-+ if (strcmp(hook, nftnl_hooknum2str(family, hooknum)) == 0)
-+ return hooknum;
-+ }
-+ return -1;
-+}
-+
-+#ifdef JSON_PARSING
-+static int nftnl_jansson_parse_flowtable(struct nftnl_flowtable *c,
-+ json_t *tree,
-+ struct nftnl_parse_err *err)
-+{
-+ const char *name, *table, *hooknum_str;
-+ int32_t family, prio, hooknum;
-+ json_t *root;
-+
-+ root = nftnl_jansson_get_node(tree, "flowtable", err);
-+ if (root == NULL)
-+ return -1;
-+
-+ name = nftnl_jansson_parse_str(root, "name", err);
-+ if (name != NULL)
-+ nftnl_flowtable_set_str(c, NFTNL_FLOWTABLE_NAME, name);
-+
-+ if (nftnl_jansson_parse_family(root, &family, err) == 0)
-+ nftnl_flowtable_set_u32(c, NFTNL_FLOWTABLE_FAMILY, family);
-+
-+ table = nftnl_jansson_parse_str(root, "table", err);
-+
-+ if (table != NULL)
-+ nftnl_flowtable_set_str(c, NFTNL_FLOWTABLE_TABLE, table);
-+
-+ if (nftnl_jansson_node_exist(root, "hooknum")) {
-+ if (nftnl_jansson_parse_val(root, "prio", NFTNL_TYPE_S32,
-+ &prio, err) == 0)
-+ nftnl_flowtable_set_s32(c, NFTNL_FLOWTABLE_PRIO, prio);
-+
-+ hooknum_str = nftnl_jansson_parse_str(root, "hooknum", err);
-+ if (hooknum_str != NULL) {
-+ hooknum = nftnl_str2hooknum(c->family, hooknum_str);
-+ if (hooknum == -1)
-+ return -1;
-+ nftnl_flowtable_set_u32(c, NFTNL_FLOWTABLE_HOOKNUM,
-+ hooknum);
-+ }
-+ }
-+
-+ return 0;
-+}
-+#endif
-+
-+static int nftnl_flowtable_json_parse(struct nftnl_flowtable *c,
-+ const void *json,
-+ struct nftnl_parse_err *err,
-+ enum nftnl_parse_input input)
-+{
-+#ifdef JSON_PARSING
-+ json_t *tree;
-+ json_error_t error;
-+ int ret;
-+
-+ tree = nftnl_jansson_create_root(json, &error, err, input);
-+ if (tree == NULL)
-+ return -1;
-+
-+ ret = nftnl_jansson_parse_flowtable(c, tree, err);
-+
-+ nftnl_jansson_free_root(tree);
-+
-+ return ret;
-+#else
-+ errno = EOPNOTSUPP;
-+ return -1;
-+#endif
-+}
-+
-+static int nftnl_flowtable_do_parse(struct nftnl_flowtable *c,
-+ enum nftnl_parse_type type,
-+ const void *data,
-+ struct nftnl_parse_err *err,
-+ enum nftnl_parse_input input)
-+{
-+ int ret;
-+ struct nftnl_parse_err perr = {};
-+
-+ switch (type) {
-+ case NFTNL_PARSE_JSON:
-+ ret = nftnl_flowtable_json_parse(c, data, &perr, input);
-+ break;
-+ case NFTNL_PARSE_XML:
-+ default:
-+ ret = -1;
-+ errno = EOPNOTSUPP;
-+ break;
-+ }
-+
-+ if (err != NULL)
-+ *err = perr;
-+
-+ return ret;
-+}
-+
-+int nftnl_flowtable_parse(struct nftnl_flowtable *c, enum nftnl_parse_type type,
-+ const char *data, struct nftnl_parse_err *err)
-+{
-+ return nftnl_flowtable_do_parse(c, type, data, err, NFTNL_PARSE_BUFFER);
-+}
-+EXPORT_SYMBOL(nftnl_flowtable_parse);
-+
-+int nftnl_flowtable_parse_file(struct nftnl_flowtable *c,
-+ enum nftnl_parse_type type,
-+ FILE *fp, struct nftnl_parse_err *err)
-+{
-+ return nftnl_flowtable_do_parse(c, type, fp, err, NFTNL_PARSE_FILE);
-+}
-+EXPORT_SYMBOL(nftnl_flowtable_parse_file);
-+
-+static int nftnl_flowtable_export(char *buf, size_t size,
-+ const struct nftnl_flowtable *c, int type)
-+{
-+ NFTNL_BUF_INIT(b, buf, size);
-+
-+ nftnl_buf_open(&b, type, CHAIN);
-+ if (c->flags & (1 << NFTNL_FLOWTABLE_NAME))
-+ nftnl_buf_str(&b, type, c->name, NAME);
-+ if (c->flags & (1 << NFTNL_FLOWTABLE_TABLE))
-+ nftnl_buf_str(&b, type, c->table, TABLE);
-+ if (c->flags & (1 << NFTNL_FLOWTABLE_FAMILY))
-+ nftnl_buf_str(&b, type, nftnl_family2str(c->family), FAMILY);
-+ if (c->flags & (1 << NFTNL_FLOWTABLE_USE))
-+ nftnl_buf_u32(&b, type, c->use, USE);
-+ if (c->flags & (1 << NFTNL_FLOWTABLE_HOOKNUM)) {
-+ if (c->flags & (1 << NFTNL_FLOWTABLE_HOOKNUM))
-+ nftnl_buf_str(&b, type, nftnl_hooknum2str(c->family,
-+ c->hooknum), HOOKNUM);
-+ if (c->flags & (1 << NFTNL_FLOWTABLE_PRIO))
-+ nftnl_buf_s32(&b, type, c->prio, PRIO);
-+ }
-+
-+ nftnl_buf_close(&b, type, CHAIN);
-+
-+ return nftnl_buf_done(&b);
-+}
-+
-+static int nftnl_flowtable_snprintf_default(char *buf, size_t size,
-+ const struct nftnl_flowtable *c)
-+{
-+ int ret, remain = size, offset = 0, i;
-+
-+ ret = snprintf(buf, remain, "flow table %s %s use %u",
-+ c->table, c->name, c->use);
-+ SNPRINTF_BUFFER_SIZE(ret, remain, offset);
-+
-+ if (c->flags & (1 << NFTNL_FLOWTABLE_HOOKNUM)) {
-+ ret = snprintf(buf + offset, remain, " hook %s prio %d",
-+ nftnl_hooknum2str(c->family, c->hooknum),
-+ c->prio);
-+ SNPRINTF_BUFFER_SIZE(ret, remain, offset);
-+
-+ if (c->flags & (1 << NFTNL_FLOWTABLE_DEVICES)) {
-+ ret = snprintf(buf + offset, remain, " dev { ");
-+ SNPRINTF_BUFFER_SIZE(ret, remain, offset);
-+
-+ for (i = 0; i < c->dev_array_len; i++) {
-+ ret = snprintf(buf + offset, remain, " %s ",
-+ c->dev_array[i]);
-+ SNPRINTF_BUFFER_SIZE(ret, remain, offset);
-+ }
-+ ret = snprintf(buf + offset, remain, " } ");
-+ SNPRINTF_BUFFER_SIZE(ret, remain, offset);
-+ }
-+ }
-+
-+ return offset;
-+}
-+
-+static int nftnl_flowtable_cmd_snprintf(char *buf, size_t size,
-+ const struct nftnl_flowtable *c,
-+ uint32_t cmd, uint32_t type,
-+ uint32_t flags)
-+{
-+ int ret, remain = size, offset = 0;
-+
-+ ret = nftnl_cmd_header_snprintf(buf + offset, remain, cmd, type, flags);
-+ SNPRINTF_BUFFER_SIZE(ret, remain, offset);
-+
-+ switch (type) {
-+ case NFTNL_OUTPUT_DEFAULT:
-+ ret = nftnl_flowtable_snprintf_default(buf + offset, remain, c);
-+ break;
-+ case NFTNL_OUTPUT_XML:
-+ case NFTNL_OUTPUT_JSON:
-+ ret = nftnl_flowtable_export(buf + offset, remain, c, type);
-+ break;
-+ default:
-+ return -1;
-+ }
-+
-+ SNPRINTF_BUFFER_SIZE(ret, remain, offset);
-+
-+ ret = nftnl_cmd_footer_snprintf(buf + offset, remain, cmd, type, flags);
-+ SNPRINTF_BUFFER_SIZE(ret, remain, offset);
-+
-+ return offset;
-+}
-+
-+int nftnl_flowtable_snprintf(char *buf, size_t size, const struct nftnl_flowtable *c,
-+ uint32_t type, uint32_t flags)
-+{
-+ if (size)
-+ buf[0] = '\0';
-+
-+ return nftnl_flowtable_cmd_snprintf(buf, size, c, nftnl_flag2cmd(flags),
-+ type, flags);
-+}
-+EXPORT_SYMBOL(nftnl_flowtable_snprintf);
-+
-+static int nftnl_flowtable_do_snprintf(char *buf, size_t size, const void *c,
-+ uint32_t cmd, uint32_t type, uint32_t flags)
-+{
-+ return nftnl_flowtable_snprintf(buf, size, c, type, flags);
-+}
-+
-+int nftnl_flowtable_fprintf(FILE *fp, const struct nftnl_flowtable *c,
-+ uint32_t type, uint32_t flags)
-+{
-+ return nftnl_fprintf(fp, c, NFTNL_CMD_UNSPEC, type, flags,
-+ nftnl_flowtable_do_snprintf);
-+}
-+EXPORT_SYMBOL(nftnl_flowtable_fprintf);
-+
-+struct nftnl_flowtable_list {
-+ struct list_head list;
-+};
-+
-+struct nftnl_flowtable_list *nftnl_flowtable_list_alloc(void)
-+{
-+ struct nftnl_flowtable_list *list;
-+
-+ list = calloc(1, sizeof(struct nftnl_flowtable_list));
-+ if (list == NULL)
-+ return NULL;
-+
-+ INIT_LIST_HEAD(&list->list);
-+
-+ return list;
-+}
-+EXPORT_SYMBOL(nftnl_flowtable_list_alloc);
-+
-+void nftnl_flowtable_list_free(struct nftnl_flowtable_list *list)
-+{
-+ struct nftnl_flowtable *s, *tmp;
-+
-+ list_for_each_entry_safe(s, tmp, &list->list, head) {
-+ list_del(&s->head);
-+ nftnl_flowtable_free(s);
-+ }
-+ xfree(list);
-+}
-+EXPORT_SYMBOL(nftnl_flowtable_list_free);
-+
-+int nftnl_flowtable_list_is_empty(const struct nftnl_flowtable_list *list)
-+{
-+ return list_empty(&list->list);
-+}
-+EXPORT_SYMBOL(nftnl_flowtable_list_is_empty);
-+
-+void nftnl_flowtable_list_add(struct nftnl_flowtable *s,
-+ struct nftnl_flowtable_list *list)
-+{
-+ list_add(&s->head, &list->list);
-+}
-+EXPORT_SYMBOL(nftnl_flowtable_list_add);
-+
-+void nftnl_flowtable_list_add_tail(struct nftnl_flowtable *s,
-+ struct nftnl_flowtable_list *list)
-+{
-+ list_add_tail(&s->head, &list->list);
-+}
-+EXPORT_SYMBOL(nftnl_flowtable_list_add_tail);
-+
-+void nftnl_flowtable_list_del(struct nftnl_flowtable *s)
-+{
-+ list_del(&s->head);
-+}
-+EXPORT_SYMBOL(nftnl_flowtable_list_del);
-+
-+int nftnl_flowtable_list_foreach(struct nftnl_flowtable_list *flowtable_list,
-+ int (*cb)(struct nftnl_flowtable *t, void *data), void *data)
-+{
-+ struct nftnl_flowtable *cur, *tmp;
-+ int ret;
-+
-+ list_for_each_entry_safe(cur, tmp, &flowtable_list->list, head) {
-+ ret = cb(cur, data);
-+ if (ret < 0)
-+ return ret;
-+ }
-+ return 0;
-+}
-+EXPORT_SYMBOL(nftnl_flowtable_list_foreach);
---- a/src/libnftnl.map
-+++ b/src/libnftnl.map
-@@ -311,3 +311,34 @@ local: *;
- LIBNFTNL_6 {
- nftnl_expr_fprintf;
- } LIBNFTNL_5;
-+
-+LIBNFTNL_7 {
-+ nftnl_flowtable_alloc;
-+ nftnl_flowtable_free;
-+ nftnl_flowtable_is_set;
-+ nftnl_flowtable_unset;
-+ nftnl_flowtable_set;
-+ nftnl_flowtable_set_u32;
-+ nftnl_flowtable_set_s32;
-+ nftnl_flowtable_set_array;
-+ nftnl_flowtable_set_str;
-+ nftnl_flowtable_get;
-+ nftnl_flowtable_get_u32;
-+ nftnl_flowtable_get_s32;
-+ nftnl_flowtable_get_array;
-+ nftnl_flowtable_get_str;
-+ nftnl_flowtable_parse;
-+ nftnl_flowtable_parse_file;
-+ nftnl_flowtable_snprintf;
-+ nftnl_flowtable_fprintf;
-+ nftnl_flowtable_nlmsg_build_payload;
-+ nftnl_flowtable_nlmsg_parse;
-+ nftnl_flowtable_list_alloc;
-+ nftnl_flowtable_list_free;
-+ nftnl_flowtable_list_is_empty;
-+ nftnl_flowtable_list_add;
-+ nftnl_flowtable_list_add_tail;
-+ nftnl_flowtable_list_del;
-+ nftnl_flowtable_list_foreach;
-+
-+} LIBNFTNL_6;
projects / openwrt / openwrt.git / commitdiff