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/set.h>
19 int main(
int argc,
char *argv[])
21 char buf[MNL_SOCKET_BUFFER_SIZE];
22 struct mnl_nlmsg_batch *batch;
23 uint32_t portid, seq, family;
24 struct nftnl_set_elem *e;
25 struct mnl_socket *nl;
32 fprintf(stderr,
"%s <family> <table> <set>\n", argv[0]);
36 s = nftnl_set_alloc();
43 if (strcmp(argv[1],
"ip") == 0)
44 family = NFPROTO_IPV4;
45 else if (strcmp(argv[1],
"ip6") == 0)
46 family = NFPROTO_IPV6;
47 else if (strcmp(argv[1],
"inet") == 0)
48 family = NFPROTO_INET;
49 else if (strcmp(argv[1],
"bridge") == 0)
50 family = NFPROTO_BRIDGE;
51 else if (strcmp(argv[1],
"arp") == 0)
54 fprintf(stderr,
"Unknown family: ip, ip6, inet, bridge, arp\n");
58 nftnl_set_set_str(s, NFTNL_SET_TABLE, argv[2]);
59 nftnl_set_set_str(s, NFTNL_SET_NAME, argv[3]);
62 e = nftnl_set_elem_alloc();
69 nftnl_set_elem_set(e, NFTNL_SET_ELEM_KEY, &data,
sizeof(data));
70 nftnl_set_elem_add(s, e);
72 e = nftnl_set_elem_alloc();
78 nftnl_set_elem_set(e, NFTNL_SET_ELEM_KEY, &data,
sizeof(data));
79 nftnl_set_elem_add(s, e);
81 batch = mnl_nlmsg_batch_start(buf,
sizeof(buf));
83 nftnl_batch_begin(mnl_nlmsg_batch_current(batch), seq++);
84 mnl_nlmsg_batch_next(batch);
86 nlh = nftnl_nlmsg_build_hdr(mnl_nlmsg_batch_current(batch),
87 NFT_MSG_DELSETELEM, family, NLM_F_ACK, seq);
88 nftnl_set_elems_nlmsg_build_payload(nlh, s);
90 mnl_nlmsg_batch_next(batch);
92 nftnl_batch_end(mnl_nlmsg_batch_current(batch), seq++);
93 mnl_nlmsg_batch_next(batch);
95 nl = mnl_socket_open(NETLINK_NETFILTER);
97 perror(
"mnl_socket_open");
101 if (mnl_socket_bind(nl, 0, MNL_SOCKET_AUTOPID) < 0) {
102 perror(
"mnl_socket_bind");
105 portid = mnl_socket_get_portid(nl);
107 ret = mnl_socket_sendto(nl, mnl_nlmsg_batch_head(batch),
108 mnl_nlmsg_batch_size(batch));
110 perror(
"mnl_socket_sendto");
114 mnl_nlmsg_batch_stop(batch);
116 ret = mnl_socket_recvfrom(nl, buf,
sizeof(buf));
118 ret = mnl_cb_run(buf, ret, 0, portid, NULL, NULL);
121 ret = mnl_socket_recvfrom(nl, buf,
sizeof(buf));
127 mnl_socket_close(nl);