15#include <netinet/in.h>
17#include <linux/netfilter.h>
18#include <linux/netfilter/nf_tables.h>
20#include <libmnl/libmnl.h>
21#include <libnftnl/object.h>
23static struct nftnl_obj *obj_del_parse(
int argc,
char *argv[])
28 if (strcmp(argv[1],
"ip") == 0)
29 family = NFPROTO_IPV4;
30 else if (strcmp(argv[1],
"ip6") == 0)
31 family = NFPROTO_IPV6;
32 else if (strcmp(argv[1],
"inet") == 0)
33 family = NFPROTO_INET;
34 else if (strcmp(argv[1],
"bridge") == 0)
35 family = NFPROTO_BRIDGE;
36 else if (strcmp(argv[1],
"arp") == 0)
39 fprintf(stderr,
"Unknown family: ip, ip6, inet, bridge, arp\n");
43 t = nftnl_obj_alloc();
49 nftnl_obj_set_str(t, NFTNL_OBJ_TABLE, argv[2]);
50 nftnl_obj_set_str(t, NFTNL_OBJ_NAME, argv[3]);
51 nftnl_obj_set_u32(t, NFTNL_OBJ_TYPE, NFT_OBJECT_COUNTER);
52 nftnl_obj_set_u32(t, NFTNL_OBJ_FAMILY, family);
57int main(
int argc,
char *argv[])
59 struct mnl_socket *nl;
60 char buf[MNL_SOCKET_BUFFER_SIZE];
62 uint32_t portid, seq, obj_seq, family;
64 struct mnl_nlmsg_batch *batch;
68 fprintf(stderr,
"%s <family> <table> <name>\n", argv[0]);
72 t = obj_del_parse(argc, argv);
77 batch = mnl_nlmsg_batch_start(buf,
sizeof(buf));
79 nftnl_batch_begin(mnl_nlmsg_batch_current(batch), seq++);
80 mnl_nlmsg_batch_next(batch);
83 family = nftnl_obj_get_u32(t, NFTNL_OBJ_FAMILY);
84 nlh = nftnl_nlmsg_build_hdr(mnl_nlmsg_batch_current(batch),
85 NFT_MSG_DELOBJ, family, NLM_F_ACK,
87 nftnl_obj_nlmsg_build_payload(nlh, t);
88 mnl_nlmsg_batch_next(batch);
91 nftnl_batch_end(mnl_nlmsg_batch_current(batch), seq++);
92 mnl_nlmsg_batch_next(batch);
94 nl = mnl_socket_open(NETLINK_NETFILTER);
96 perror(
"mnl_socket_open");
100 if (mnl_socket_bind(nl, 0, MNL_SOCKET_AUTOPID) < 0) {
101 perror(
"mnl_socket_bind");
104 portid = mnl_socket_get_portid(nl);
106 if (mnl_socket_sendto(nl, mnl_nlmsg_batch_head(batch),
107 mnl_nlmsg_batch_size(batch)) < 0) {
108 perror(
"mnl_socket_send");
112 mnl_nlmsg_batch_stop(batch);
114 ret = mnl_socket_recvfrom(nl, buf,
sizeof(buf));
116 ret = mnl_cb_run(buf, ret, obj_seq, portid, NULL, NULL);
119 ret = mnl_socket_recvfrom(nl, buf,
sizeof(buf));
125 mnl_socket_close(nl);