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/set.h>
23 int main(
int argc,
char *argv[])
25 struct mnl_socket *nl;
26 char buf[MNL_SOCKET_BUFFER_SIZE];
27 struct mnl_nlmsg_batch *batch;
29 uint32_t portid, seq, family;
31 struct nftnl_set_elem *e;
36 fprintf(stderr,
"%s <family> <table> <set>\n", argv[0]);
40 s = nftnl_set_alloc();
47 if (strcmp(argv[1],
"ip") == 0)
48 family = NFPROTO_IPV4;
49 else if (strcmp(argv[1],
"ip6") == 0)
50 family = NFPROTO_IPV6;
51 else if (strcmp(argv[1],
"bridge") == 0)
52 family = NFPROTO_BRIDGE;
53 else if (strcmp(argv[1],
"arp") == 0)
56 fprintf(stderr,
"Unknown family: ip, ip6, bridge, arp\n");
60 nftnl_set_set_str(s, NFTNL_SET_TABLE, argv[2]);
61 nftnl_set_set_str(s, NFTNL_SET_NAME, argv[3]);
64 e = nftnl_set_elem_alloc();
71 nftnl_set_elem_set(e, NFTNL_SET_ELEM_KEY, &data,
sizeof(data));
72 nftnl_set_elem_add(s, e);
74 e = nftnl_set_elem_alloc();
80 nftnl_set_elem_set(e, NFTNL_SET_ELEM_KEY, &data,
sizeof(data));
81 nftnl_set_elem_add(s, e);
83 batch = mnl_nlmsg_batch_start(buf,
sizeof(buf));
85 nftnl_batch_begin(mnl_nlmsg_batch_current(batch), seq++);
86 mnl_nlmsg_batch_next(batch);
88 nlh = nftnl_nlmsg_build_hdr(mnl_nlmsg_batch_current(batch),
89 NFT_MSG_NEWSETELEM, family,
90 NLM_F_CREATE | NLM_F_EXCL | NLM_F_ACK,
92 nftnl_set_elems_nlmsg_build_payload(nlh, s);
94 mnl_nlmsg_batch_next(batch);
96 nftnl_batch_end(mnl_nlmsg_batch_current(batch), seq++);
97 mnl_nlmsg_batch_next(batch);
99 nl = mnl_socket_open(NETLINK_NETFILTER);
101 perror(
"mnl_socket_open");
105 if (mnl_socket_bind(nl, 0, MNL_SOCKET_AUTOPID) < 0) {
106 perror(
"mnl_socket_bind");
109 portid = mnl_socket_get_portid(nl);
111 if (mnl_socket_sendto(nl, mnl_nlmsg_batch_head(batch),
112 mnl_nlmsg_batch_size(batch)) < 0) {
113 perror(
"mnl_socket_send");
117 mnl_nlmsg_batch_stop(batch);
119 ret = mnl_socket_recvfrom(nl, buf,
sizeof(buf));
121 ret = mnl_cb_run(buf, ret, 0, portid, NULL, NULL);
124 ret = mnl_socket_recvfrom(nl, buf,
sizeof(buf));
130 mnl_socket_close(nl);