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>
23int main(
int argc,
char *argv[])
25 struct mnl_socket *nl;
26 char buf[MNL_SOCKET_BUFFER_SIZE];
28 uint32_t portid, seq, table_seq, family, flags;
30 struct mnl_nlmsg_batch *batch;
34 fprintf(stderr,
"%s <family> <name> <state>\n", argv[0]);
38 t = nftnl_table_alloc();
45 batch = mnl_nlmsg_batch_start(buf,
sizeof(buf));
47 nftnl_batch_begin(mnl_nlmsg_batch_current(batch), seq++);
48 mnl_nlmsg_batch_next(batch);
50 if (strcmp(argv[1],
"ip") == 0)
51 family = NFPROTO_IPV4;
52 else if (strcmp(argv[1],
"ip6") == 0)
53 family = NFPROTO_IPV6;
54 else if (strcmp(argv[1],
"inet") == 0)
55 family = NFPROTO_INET;
56 else if (strcmp(argv[1],
"bridge") == 0)
57 family = NFPROTO_BRIDGE;
58 else if (strcmp(argv[1],
"arp") == 0)
60 else if (strcmp(argv[1],
"netdev") == 0)
61 family = NFPROTO_NETDEV;
64 "Unknown family: ip, ip6, inet, bridge, arp, netdev\n");
68 if (strcmp(argv[3],
"active") == 0)
70 else if (strcmp(argv[3],
"dormant") == 0)
71 flags = NFT_TABLE_F_DORMANT;
73 fprintf(stderr,
"Unknown state: active, dormant\n");
77 nftnl_table_set_str(t, NFTNL_TABLE_NAME, argv[2]);
78 nftnl_table_set_u32(t, NFTNL_TABLE_FLAGS, flags);
81 nlh = nftnl_nlmsg_build_hdr(mnl_nlmsg_batch_current(batch),
82 NFT_MSG_NEWTABLE, family, NLM_F_ACK, seq++);
83 nftnl_table_nlmsg_build_payload(nlh, t);
85 mnl_nlmsg_batch_next(batch);
87 nftnl_batch_end(mnl_nlmsg_batch_current(batch), seq++);
88 mnl_nlmsg_batch_next(batch);
90 nl = mnl_socket_open(NETLINK_NETFILTER);
92 perror(
"mnl_socket_open");
96 if (mnl_socket_bind(nl, 0, MNL_SOCKET_AUTOPID) < 0) {
97 perror(
"mnl_socket_bind");
100 portid = mnl_socket_get_portid(nl);
102 if (mnl_socket_sendto(nl, mnl_nlmsg_batch_head(batch),
103 mnl_nlmsg_batch_size(batch)) < 0) {
104 perror(
"mnl_socket_send");
108 mnl_nlmsg_batch_stop(batch);
110 ret = mnl_socket_recvfrom(nl, buf,
sizeof(buf));
112 ret = mnl_cb_run(buf, ret, table_seq, portid, NULL, NULL);
115 ret = mnl_socket_recvfrom(nl, buf,
sizeof(buf));
121 mnl_socket_close(nl);