9 #include <netinet/in.h>
11 #include <linux/netfilter.h>
12 #include <linux/netfilter/nf_tables.h>
14 #include <libmnl/libmnl.h>
15 #include <libnftnl/object.h>
17 static struct nftnl_obj *obj_add_parse(
int argc,
char *argv[])
22 if (strcmp(argv[1],
"ip") == 0)
23 family = NFPROTO_IPV4;
24 else if (strcmp(argv[1],
"ip6") == 0)
25 family = NFPROTO_IPV6;
26 else if (strcmp(argv[1],
"inet") == 0)
27 family = NFPROTO_INET;
28 else if (strcmp(argv[1],
"bridge") == 0)
29 family = NFPROTO_BRIDGE;
30 else if (strcmp(argv[1],
"arp") == 0)
33 fprintf(stderr,
"Unknown family: ip, ip6, inet, bridge, arp\n");
37 t = nftnl_obj_alloc();
43 nftnl_obj_set_u32(t, NFTNL_OBJ_FAMILY, family);
44 nftnl_obj_set_u32(t, NFTNL_OBJ_TYPE, NFT_OBJECT_COUNTER);
45 nftnl_obj_set_str(t, NFTNL_OBJ_TABLE, argv[2]);
46 nftnl_obj_set_str(t, NFTNL_OBJ_NAME, argv[3]);
51 int main(
int argc,
char *argv[])
53 struct mnl_socket *nl;
54 char buf[MNL_SOCKET_BUFFER_SIZE];
56 uint32_t portid, seq, obj_seq, family;
58 struct mnl_nlmsg_batch *batch;
62 fprintf(stderr,
"%s <family> <table> <name>\n", argv[0]);
66 t = obj_add_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 family = nftnl_obj_get_u32(t, NFTNL_OBJ_FAMILY);
78 nlh = nftnl_nlmsg_build_hdr(mnl_nlmsg_batch_current(batch),
79 NFT_MSG_NEWOBJ, family, NLM_F_ACK, seq++);
80 nftnl_obj_nlmsg_build_payload(nlh, t);
82 mnl_nlmsg_batch_next(batch);
84 nftnl_batch_end(mnl_nlmsg_batch_current(batch), seq++);
85 mnl_nlmsg_batch_next(batch);
87 nl = mnl_socket_open(NETLINK_NETFILTER);
89 perror(
"mnl_socket_open");
93 if (mnl_socket_bind(nl, 0, MNL_SOCKET_AUTOPID) < 0) {
94 perror(
"mnl_socket_bind");
97 portid = mnl_socket_get_portid(nl);
99 if (mnl_socket_sendto(nl, mnl_nlmsg_batch_head(batch),
100 mnl_nlmsg_batch_size(batch)) < 0) {
101 perror(
"mnl_socket_send");
105 mnl_nlmsg_batch_stop(batch);
107 ret = mnl_socket_recvfrom(nl, buf,
sizeof(buf));
109 ret = mnl_cb_run(buf, ret, obj_seq, portid, NULL, NULL);
112 ret = mnl_socket_recvfrom(nl, buf,
sizeof(buf));
118 mnl_socket_close(nl);