tools: gtp-link: allow to delete links
Add delete command, useful for testing.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
diff --git a/tools/gtp-link-add.c b/tools/gtp-link-add.c
index 3ea7f35..8aa9e98 100644
--- a/tools/gtp-link-add.c
+++ b/tools/gtp-link-add.c
@@ -1,6 +1,8 @@
/* Command line utility to create GTP link */
/* (C) 2014 by sysmocom - s.f.m.c. GmbH
+ * (C) 2016 by Pablo Neira Ayuso <pablo@netfilter.org>
+ *
* Author: Pablo Neira Ayuso <pablo@gnumonks.org>
*
* All Rights Reserved
@@ -34,6 +36,8 @@
#include <linux/gtp.h>
#include <linux/if_link.h>
+#include <libgtpnl/gtpnl.h>
+
int main(int argc, char *argv[])
{
struct mnl_socket *nl;
@@ -44,11 +48,19 @@
unsigned int seq, portid, change = 0, flags = 0;
struct nlattr *nest, *nest2;
- if (argc != 1) {
- printf("Usage: %s\n", argv[0]);
+ if (argc != 3) {
+ printf("Usage: %s <add|del> <device>\n", argv[0]);
exit(EXIT_FAILURE);
}
+ if (!strcmp(argv[1], "del")) {
+ printf("destroying gtp interface...\n");
+ if (gtp_dev_destroy(argv[2]) < 0)
+ perror("gtp_dev_destroy");
+
+ 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;
@@ -58,12 +70,10 @@
ifm->ifi_change |= IFF_UP;
ifm->ifi_flags |= IFF_UP;
- fprintf(stderr, "WARNING: attaching dummy socket descriptors. Use "
- "this command for testing purposes only.\n");
int fd1 = socket(AF_INET, SOCK_DGRAM, 0);
int fd2 = socket(AF_INET, SOCK_DGRAM, 0);
- mnl_attr_put_str(nlh, IFLA_IFNAME, "gtp0");
+ 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);
@@ -107,5 +117,9 @@
mnl_socket_close(nl);
+ fprintf(stderr, "WARNING: attaching dummy socket descriptors. Keep "
+ "this process running for testing purposes.\n");
+ pause();
+
return 0;
}