11#include <netinet/in.h>
13#include <linux/netfilter.h>
14#include <linux/netfilter/nf_tables.h>
16#include <libmnl/libmnl.h>
17#include <libnftnl/table.h>
19int main(
int argc,
char *argv[])
21 struct mnl_socket *nl;
22 char buf[MNL_SOCKET_BUFFER_SIZE];
24 uint32_t portid, seq, table_seq, family, flags;
26 struct mnl_nlmsg_batch *batch;
30 fprintf(stderr,
"%s <family> <name> <state>\n", argv[0]);
34 t = nftnl_table_alloc();
41 batch = mnl_nlmsg_batch_start(buf,
sizeof(buf));
43 nftnl_batch_begin(mnl_nlmsg_batch_current(batch), seq++);
44 mnl_nlmsg_batch_next(batch);
46 if (strcmp(argv[1],
"ip") == 0)
47 family = NFPROTO_IPV4;
48 else if (strcmp(argv[1],
"ip6") == 0)
49 family = NFPROTO_IPV6;
50 else if (strcmp(argv[1],
"inet") == 0)
51 family = NFPROTO_INET;
52 else if (strcmp(argv[1],
"bridge") == 0)
53 family = NFPROTO_BRIDGE;
54 else if (strcmp(argv[1],
"arp") == 0)
56 else if (strcmp(argv[1],
"netdev") == 0)
57 family = NFPROTO_NETDEV;
60 "Unknown family: ip, ip6, inet, bridge, arp, netdev\n");
64 if (strcmp(argv[3],
"active") == 0)
66 else if (strcmp(argv[3],
"dormant") == 0)
67 flags = NFT_TABLE_F_DORMANT;
69 fprintf(stderr,
"Unknown state: active, dormant\n");
73 nftnl_table_set_str(t, NFTNL_TABLE_NAME, argv[2]);
74 nftnl_table_set_u32(t, NFTNL_TABLE_FLAGS, flags);
77 nlh = nftnl_nlmsg_build_hdr(mnl_nlmsg_batch_current(batch),
78 NFT_MSG_NEWTABLE, family, NLM_F_ACK, seq++);
79 nftnl_table_nlmsg_build_payload(nlh, t);
81 mnl_nlmsg_batch_next(batch);
83 nftnl_batch_end(mnl_nlmsg_batch_current(batch), seq++);
84 mnl_nlmsg_batch_next(batch);
86 nl = mnl_socket_open(NETLINK_NETFILTER);
88 perror(
"mnl_socket_open");
92 if (mnl_socket_bind(nl, 0, MNL_SOCKET_AUTOPID) < 0) {
93 perror(
"mnl_socket_bind");
96 portid = mnl_socket_get_portid(nl);
98 if (mnl_socket_sendto(nl, mnl_nlmsg_batch_head(batch),
99 mnl_nlmsg_batch_size(batch)) < 0) {
100 perror(
"mnl_socket_send");
104 mnl_nlmsg_batch_stop(batch);
106 ret = mnl_socket_recvfrom(nl, buf,
sizeof(buf));
108 ret = mnl_cb_run(buf, ret, table_seq, portid, NULL, NULL);
111 ret = mnl_socket_recvfrom(nl, buf,
sizeof(buf));
117 mnl_socket_close(nl);