14#include <netinet/in.h>
15#include <netinet/ip.h>
16#include <netinet/tcp.h>
19#include <sys/socket.h>
22#include <linux/netfilter.h>
23#include <linux/netfilter/nfnetlink.h>
24#include <linux/netfilter/nf_tables.h>
26#include <libmnl/libmnl.h>
27#include <libnftnl/set.h>
29static struct nftnl_set *setup_set(uint8_t family,
const char *table,
32 struct nftnl_set *s = NULL;
34 s = nftnl_set_alloc();
40 nftnl_set_set_str(s, NFTNL_SET_TABLE, table);
41 nftnl_set_set_str(s, NFTNL_SET_NAME, name);
42 nftnl_set_set_u32(s, NFTNL_SET_FAMILY, family);
43 nftnl_set_set_u32(s, NFTNL_SET_KEY_LEN, 2);
48 nftnl_set_set_u32(s, NFTNL_SET_KEY_TYPE, 13);
49 nftnl_set_set_u32(s, NFTNL_SET_DATA_LEN, 2);
50 nftnl_set_set_u32(s, NFTNL_SET_DATA_TYPE, 13);
51 nftnl_set_set_u32(s, NFTNL_SET_ID, 1);
52 nftnl_set_set_u32(s, NFTNL_SET_FLAGS, NFT_SET_CONSTANT | NFT_SET_MAP);
57int main(
int argc,
char *argv[])
59 struct mnl_socket *nl;
62 struct mnl_nlmsg_batch *batch;
64 char buf[MNL_SOCKET_BUFFER_SIZE];
65 uint32_t seq = time(NULL);
69 fprintf(stderr,
"Usage: %s <family> <table> <setname>\n", argv[0]);
73 if (strcmp(argv[1],
"ip") == 0)
74 family = NFPROTO_IPV4;
75 else if (strcmp(argv[1],
"ip6") == 0)
76 family = NFPROTO_IPV6;
77 else if (strcmp(argv[1],
"inet") == 0)
78 family = NFPROTO_INET;
79 else if (strcmp(argv[1],
"bridge") == 0)
80 family = NFPROTO_BRIDGE;
81 else if (strcmp(argv[1],
"arp") == 0)
84 fprintf(stderr,
"Unknown family: ip, ip6, bridge, arp\n");
88 s = setup_set(family, argv[2], argv[3]);
90 nl = mnl_socket_open(NETLINK_NETFILTER);
92 perror(
"mnl_socket_open");
96 if (mnl_socket_bind(nl, 0, MNL_SOCKET_AUTOPID) < 0) {
97 perror(
"mnl_socket_bind");
101 batch = mnl_nlmsg_batch_start(buf,
sizeof(buf));
103 nftnl_batch_begin(mnl_nlmsg_batch_current(batch), seq++);
104 mnl_nlmsg_batch_next(batch);
106 nlh = nftnl_nlmsg_build_hdr(mnl_nlmsg_batch_current(batch),
107 NFT_MSG_NEWSET, family,
108 NLM_F_CREATE | NLM_F_ACK, seq++);
110 nftnl_set_nlmsg_build_payload(nlh, s);
112 mnl_nlmsg_batch_next(batch);
114 nftnl_batch_end(mnl_nlmsg_batch_current(batch), seq++);
115 mnl_nlmsg_batch_next(batch);
117 ret = mnl_socket_sendto(nl, mnl_nlmsg_batch_head(batch),
118 mnl_nlmsg_batch_size(batch));
120 perror(
"mnl_socket_sendto");
124 mnl_nlmsg_batch_stop(batch);
126 ret = mnl_socket_recvfrom(nl, buf,
sizeof(buf));
128 perror(
"mnl_socket_recvfrom");
132 ret = mnl_cb_run(buf, ret, 0, mnl_socket_get_portid(nl), NULL, NULL);
134 perror(
"mnl_cb_run");
138 mnl_socket_close(nl);