cellular-infrastructure
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libgtpnl
mirror of https://gerrit.osmocom.org/libgtpnl
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gtl-link.c: Actually use libgtpnl, don't hand-coded netlink msg 

The command line tool should use libgtpnl, rather than replicating code
for generating a netlink message.
This commit is contained in:
Harald Welte 2017-03-15 20:53:08 +01:00
parent 6d60a402b2
commit a7a4df366b
1 changed files with 3 additions and 55 deletions
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58
tools/gtp-link.c
View File

@ -42,13 +42,8 @@
int main(int argc, char *argv[])
{
struct mnl_socket *nl;
char buf[MNL_SOCKET_BUFFER_SIZE];
struct nlmsghdr *nlh;
struct ifinfomsg *ifm;
int ret;
unsigned int seq, portid;
struct nlattr *nest, *nest2;
if (argc != 3) {
printf("Usage: %s <add|del> <device>\n", argv[0]);
@ -63,15 +58,6 @@ int main(int argc, char *argv[])
return 0;
}
nlh = mnl_nlmsg_put_header(buf);
nlh->nlmsg_type = RTM_NEWLINK;
nlh->nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE | NLM_F_EXCL |NLM_F_ACK;
nlh->nlmsg_seq = seq = time(NULL);
ifm = mnl_nlmsg_put_extra_header(nlh, sizeof(*ifm));
ifm->ifi_family = AF_INET;
ifm->ifi_change |= IFF_UP;
ifm->ifi_flags |= IFF_UP;
int fd1 = socket(AF_INET, SOCK_DGRAM, 0);
int fd2 = socket(AF_INET, SOCK_DGRAM, 0);
struct sockaddr_in sockaddr_fd1 = {
@ -100,50 +86,12 @@ int main(int argc, char *argv[])
exit(EXIT_FAILURE);
}
mnl_attr_put_str(nlh, IFLA_IFNAME, argv[2]);
nest = mnl_attr_nest_start(nlh, IFLA_LINKINFO);
mnl_attr_put_str(nlh, IFLA_INFO_KIND, "gtp");
nest2 = mnl_attr_nest_start(nlh, IFLA_INFO_DATA);
mnl_attr_put_u32(nlh, IFLA_GTP_FD0, fd1);
mnl_attr_put_u32(nlh, IFLA_GTP_FD1, fd2);
mnl_attr_put_u32(nlh, IFLA_GTP_PDP_HASHSIZE, 131072);
mnl_attr_nest_end(nlh, nest2);
mnl_attr_nest_end(nlh, nest);
nl = mnl_socket_open(NETLINK_ROUTE);
if (nl == NULL) {
perror("mnl_socket_open");
ret = gtp_dev_create(-1, argv[2], fd1, fd2);
if (ret < 0) {
perror("cannot create GTP device\n");
exit(EXIT_FAILURE);
}
if (mnl_socket_bind(nl, 0, MNL_SOCKET_AUTOPID) < 0) {
perror("mnl_socket_bind");
exit(EXIT_FAILURE);
}
portid = mnl_socket_get_portid(nl);
mnl_nlmsg_fprintf(stdout, nlh, nlh->nlmsg_len,
sizeof(struct ifinfomsg));
if (mnl_socket_sendto(nl, nlh, nlh->nlmsg_len) < 0) {
perror("mnl_socket_send");
exit(EXIT_FAILURE);
}
ret = mnl_socket_recvfrom(nl, buf, sizeof(buf));
if (ret == -1) {
perror("read");
exit(EXIT_FAILURE);
}
ret = mnl_cb_run(buf, ret, seq, portid, NULL, NULL);
if (ret == -1){
perror("callback");
exit(EXIT_FAILURE);
}
mnl_socket_close(nl);
fprintf(stderr, "WARNING: attaching dummy socket descriptors. Keep "
"this process running for testing purposes.\n");