15 #include <netinet/in.h>
17 #include <linux/netfilter.h>
18 #include <linux/netfilter/nf_tables.h>
20 #include <libmnl/libmnl.h>
21 #include <libnftnl/table.h>
23 static struct nftnl_table *table_add_parse(
int argc,
char *argv[])
28 if (strcmp(argv[1],
"ip") == 0)
29 family = NFPROTO_IPV4;
30 else if (strcmp(argv[1],
"ip6") == 0)
31 family = NFPROTO_IPV6;
32 else if (strcmp(argv[1],
"bridge") == 0)
33 family = NFPROTO_BRIDGE;
34 else if (strcmp(argv[1],
"arp") == 0)
37 fprintf(stderr,
"Unknown family: ip, ip6, bridge, arp\n");
41 t = nftnl_table_alloc();
47 nftnl_table_set_u32(t, NFTNL_TABLE_FAMILY, family);
48 nftnl_table_set_str(t, NFTNL_TABLE_NAME, argv[2]);
53 int main(
int argc,
char *argv[])
55 struct mnl_socket *nl;
56 char buf[MNL_SOCKET_BUFFER_SIZE];
58 uint32_t portid, seq, table_seq, family;
60 struct mnl_nlmsg_batch *batch;
64 fprintf(stderr,
"%s <family> <name>\n", argv[0]);
68 t = table_add_parse(argc, argv);
72 batching = nftnl_batch_is_supported();
74 perror(
"cannot talk to nfnetlink");
79 batch = mnl_nlmsg_batch_start(buf,
sizeof(buf));
82 nftnl_batch_begin(mnl_nlmsg_batch_current(batch), seq++);
83 mnl_nlmsg_batch_next(batch);
87 family = nftnl_table_get_u32(t, NFTNL_TABLE_FAMILY);
88 nlh = nftnl_table_nlmsg_build_hdr(mnl_nlmsg_batch_current(batch),
89 NFT_MSG_NEWTABLE, family,
91 nftnl_table_nlmsg_build_payload(nlh, t);
93 mnl_nlmsg_batch_next(batch);
96 nftnl_batch_end(mnl_nlmsg_batch_current(batch), seq++);
97 mnl_nlmsg_batch_next(batch);
100 nl = mnl_socket_open(NETLINK_NETFILTER);
102 perror(
"mnl_socket_open");
106 if (mnl_socket_bind(nl, 0, MNL_SOCKET_AUTOPID) < 0) {
107 perror(
"mnl_socket_bind");
110 portid = mnl_socket_get_portid(nl);
112 if (mnl_socket_sendto(nl, mnl_nlmsg_batch_head(batch),
113 mnl_nlmsg_batch_size(batch)) < 0) {
114 perror(
"mnl_socket_send");
118 mnl_nlmsg_batch_stop(batch);
120 ret = mnl_socket_recvfrom(nl, buf,
sizeof(buf));
122 ret = mnl_cb_run(buf, ret, table_seq, portid, NULL, NULL);
125 ret = mnl_socket_recvfrom(nl, buf,
sizeof(buf));
131 mnl_socket_close(nl);