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/chain.h>
19 static struct nftnl_chain *chain_del_parse(
int argc,
char *argv[])
23 t = nftnl_chain_alloc();
29 nftnl_chain_set_str(t, NFTNL_CHAIN_TABLE, argv[2]);
30 nftnl_chain_set_str(t, NFTNL_CHAIN_NAME, argv[3]);
35 int main(
int argc,
char *argv[])
37 struct mnl_socket *nl;
38 struct mnl_nlmsg_batch *batch;
39 char buf[MNL_SOCKET_BUFFER_SIZE];
41 uint32_t portid, seq, chain_seq;
46 fprintf(stderr,
"Usage: %s <family> <table> <chain>\n",
51 if (strcmp(argv[1],
"ip") == 0)
52 family = NFPROTO_IPV4;
53 else if (strcmp(argv[1],
"ip6") == 0)
54 family = NFPROTO_IPV6;
55 else if (strcmp(argv[1],
"inet") == 0)
56 family = NFPROTO_INET;
57 else if (strcmp(argv[1],
"bridge") == 0)
58 family = NFPROTO_BRIDGE;
59 else if (strcmp(argv[1],
"arp") == 0)
62 fprintf(stderr,
"Unknown family: ip, ip6, inet, bridge, arp\n");
66 t = chain_del_parse(argc, argv);
71 batch = mnl_nlmsg_batch_start(buf,
sizeof(buf));
73 nftnl_batch_begin(mnl_nlmsg_batch_current(batch), seq++);
74 mnl_nlmsg_batch_next(batch);
77 nlh = nftnl_nlmsg_build_hdr(mnl_nlmsg_batch_current(batch),
78 NFT_MSG_DELCHAIN, family, NLM_F_ACK, seq++);
79 nftnl_chain_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, chain_seq, portid, NULL, NULL);
111 ret = mnl_socket_recvfrom(nl, buf,
sizeof(buf));
117 mnl_socket_close(nl);