84 lines
1.7 KiB
C
84 lines
1.7 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <time.h>
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#include <arpa/inet.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <libmnl/libmnl.h>
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#include <linux/genetlink.h>
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#include "gtp.h"
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#include "genl.h"
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static uint32_t seq;
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static struct nlmsghdr *build_msg(int type, char *buf, int i, uint32_t ifidx,
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uint32_t sgsn_addr, uint32_t ms_addr)
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{
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struct nlmsghdr *nlh;
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nlh = genl_nlmsg_build_hdr(buf, type, NLM_F_EXCL | NLM_F_ACK, ++seq,
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GTP_CMD_TUNNEL_NEW);
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mnl_attr_put_u32(nlh, GTPA_VERSION, GTP_V0);
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mnl_attr_put_u32(nlh, GTPA_LINK, ifidx);
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mnl_attr_put_u32(nlh, GTPA_SGSN_ADDRESS, sgsn_addr);
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mnl_attr_put_u32(nlh, GTPA_MS_ADDRESS, ms_addr);
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mnl_attr_put_u64(nlh, GTPA_TID, i);
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return nlh;
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}
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int main(int argc, char *argv[])
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{
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struct mnl_socket *nl;
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char buf[MNL_SOCKET_BUFFER_SIZE];
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struct nlmsghdr *nlh;
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struct genlmsghdr *genl;
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unsigned int portid;
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uint32_t gtp_ifidx;
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int32_t genl_id;
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struct in_addr ms, sgsn;
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if (argc != 5) {
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printf("%s <gtp device> <tid> <ms-addr> <sgsn-addr>\n",
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argv[0]);
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exit(EXIT_FAILURE);
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}
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gtp_ifidx = if_nametoindex(argv[1]);
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nl = genl_socket_open();
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if (nl == NULL) {
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perror("mnl_socket_open");
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exit(EXIT_FAILURE);
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}
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genl_id = genl_lookup_family(nl, "gtp");
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if (genl_id < 0) {
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printf("not found gtp genl family\n");
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exit(EXIT_FAILURE);
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}
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if (inet_aton(argv[3], &ms) < 0) {
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perror("bad address for ms");
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exit(EXIT_FAILURE);
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}
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if (inet_aton(argv[4], &sgsn) < 0) {
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perror("bad address for sgsn");
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exit(EXIT_FAILURE);
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}
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nlh = build_msg(genl_id, buf, atoi(argv[2]), gtp_ifidx, sgsn.s_addr,
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ms.s_addr);
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if (genl_socket_talk(nl, nlh, seq, NULL, NULL) < 0)
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perror("genl_socket_talk");
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mnl_socket_close(nl);
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return 0;
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}
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