13 #include <netinet/in.h>
15 #include <linux/netfilter.h>
16 #include <linux/netfilter/nf_tables.h>
18 #include <libmnl/libmnl.h>
19 #include <libnftnl/object.h>
21 static struct nftnl_obj *obj_add_parse(
int argc,
char *argv[])
26 if (strcmp(argv[1],
"ip") == 0)
27 family = NFPROTO_IPV4;
28 else if (strcmp(argv[1],
"ip6") == 0)
29 family = NFPROTO_IPV6;
30 else if (strcmp(argv[1],
"bridge") == 0)
31 family = NFPROTO_BRIDGE;
32 else if (strcmp(argv[1],
"arp") == 0)
35 fprintf(stderr,
"Unknown family: ip, ip6, bridge, arp\n");
39 t = nftnl_obj_alloc();
45 nftnl_obj_set_u32(t, NFTNL_OBJ_FAMILY, family);
46 nftnl_obj_set_u32(t, NFTNL_OBJ_TYPE, NFT_OBJECT_COUNTER);
47 nftnl_obj_set_str(t, NFTNL_OBJ_TABLE, argv[2]);
48 nftnl_obj_set_str(t, NFTNL_OBJ_NAME, argv[3]);
53 int main(
int argc,
char *argv[])
55 struct mnl_socket *nl;
56 char buf[MNL_SOCKET_BUFFER_SIZE];
58 uint32_t portid, seq, obj_seq, family;
60 struct mnl_nlmsg_batch *batch;
64 fprintf(stderr,
"%s <family> <table> <name>\n", argv[0]);
68 t = obj_add_parse(argc, argv);
73 batch = mnl_nlmsg_batch_start(buf,
sizeof(buf));
75 nftnl_batch_begin(mnl_nlmsg_batch_current(batch), seq++);
76 mnl_nlmsg_batch_next(batch);
79 family = nftnl_obj_get_u32(t, NFTNL_OBJ_FAMILY);
80 nlh = nftnl_nlmsg_build_hdr(mnl_nlmsg_batch_current(batch),
81 NFT_MSG_NEWOBJ, family, NLM_F_ACK, seq++);
82 nftnl_obj_nlmsg_build_payload(nlh, t);
84 mnl_nlmsg_batch_next(batch);
86 nftnl_batch_end(mnl_nlmsg_batch_current(batch), seq++);
87 mnl_nlmsg_batch_next(batch);
89 nl = mnl_socket_open(NETLINK_NETFILTER);
91 perror(
"mnl_socket_open");
95 if (mnl_socket_bind(nl, 0, MNL_SOCKET_AUTOPID) < 0) {
96 perror(
"mnl_socket_bind");
99 portid = mnl_socket_get_portid(nl);
101 if (mnl_socket_sendto(nl, mnl_nlmsg_batch_head(batch),
102 mnl_nlmsg_batch_size(batch)) < 0) {
103 perror(
"mnl_socket_send");
107 mnl_nlmsg_batch_stop(batch);
109 ret = mnl_socket_recvfrom(nl, buf,
sizeof(buf));
111 ret = mnl_cb_run(buf, ret, obj_seq, portid, NULL, NULL);
114 ret = mnl_socket_recvfrom(nl, buf,
sizeof(buf));
120 mnl_socket_close(nl);