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>
21static 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],
"inet") == 0)
31 family = NFPROTO_INET;
32 else if (strcmp(argv[1],
"bridge") == 0)
33 family = NFPROTO_BRIDGE;
34 else if (strcmp(argv[1],
"arp") == 0)
37 fprintf(stderr,
"Unknown family: ip, ip6, inet, bridge, arp\n");
41 t = nftnl_obj_alloc();
47 nftnl_obj_set_u32(t, NFTNL_OBJ_FAMILY, family);
48 nftnl_obj_set_u32(t, NFTNL_OBJ_TYPE, NFT_OBJECT_COUNTER);
49 nftnl_obj_set_str(t, NFTNL_OBJ_TABLE, argv[2]);
50 nftnl_obj_set_str(t, NFTNL_OBJ_NAME, argv[3]);
55int main(
int argc,
char *argv[])
57 struct mnl_socket *nl;
58 char buf[MNL_SOCKET_BUFFER_SIZE];
60 uint32_t portid, seq, obj_seq, family;
62 struct mnl_nlmsg_batch *batch;
66 fprintf(stderr,
"%s <family> <table> <name>\n", argv[0]);
70 t = obj_add_parse(argc, argv);
75 batch = mnl_nlmsg_batch_start(buf,
sizeof(buf));
77 nftnl_batch_begin(mnl_nlmsg_batch_current(batch), seq++);
78 mnl_nlmsg_batch_next(batch);
81 family = nftnl_obj_get_u32(t, NFTNL_OBJ_FAMILY);
82 nlh = nftnl_nlmsg_build_hdr(mnl_nlmsg_batch_current(batch),
83 NFT_MSG_NEWOBJ, family, NLM_F_ACK, seq++);
84 nftnl_obj_nlmsg_build_payload(nlh, t);
86 mnl_nlmsg_batch_next(batch);
88 nftnl_batch_end(mnl_nlmsg_batch_current(batch), seq++);
89 mnl_nlmsg_batch_next(batch);
91 nl = mnl_socket_open(NETLINK_NETFILTER);
93 perror(
"mnl_socket_open");
97 if (mnl_socket_bind(nl, 0, MNL_SOCKET_AUTOPID) < 0) {
98 perror(
"mnl_socket_bind");
101 portid = mnl_socket_get_portid(nl);
103 if (mnl_socket_sendto(nl, mnl_nlmsg_batch_head(batch),
104 mnl_nlmsg_batch_size(batch)) < 0) {
105 perror(
"mnl_socket_send");
109 mnl_nlmsg_batch_stop(batch);
111 ret = mnl_socket_recvfrom(nl, buf,
sizeof(buf));
113 ret = mnl_cb_run(buf, ret, obj_seq, portid, NULL, NULL);
116 ret = mnl_socket_recvfrom(nl, buf,
sizeof(buf));
122 mnl_socket_close(nl);