@@ -25,6 +25,9 @@
#ifndef MPTCP_PM_EVENTS
#define MPTCP_PM_EVENTS "mptcp_pm_events"
#endif
+#ifndef IPPROTO_MPTCP
+#define IPPROTO_MPTCP 262
+#endif
static void syntax(char *argv[])
{
@@ -41,6 +44,7 @@ static void syntax(char *argv[])
fprintf(stderr, "\tdump\n");
fprintf(stderr, "\tlimits [<rcv addr max> <subflow max>]\n");
fprintf(stderr, "\tevents\n");
+ fprintf(stderr, "\tlisten <local-ip> <local-port>\n");
exit(0);
}
@@ -1219,6 +1223,54 @@ int get_set_limits(int fd, int pm_family, int argc, char *argv[])
return 0;
}
+int add_listener(int argc, char *argv[])
+{
+ struct sockaddr_storage addr;
+ struct sockaddr_in6 *a6;
+ struct sockaddr_in *a4;
+ u_int16_t family;
+ int enable = 1;
+ int sock;
+ int err;
+
+ if (argc < 4)
+ syntax(argv);
+
+ memset(&addr, 0, sizeof(struct sockaddr_storage));
+ a4 = (struct sockaddr_in *)&addr;
+ a6 = (struct sockaddr_in6 *)&addr;
+
+ if (inet_pton(AF_INET, argv[2], &a4->sin_addr)) {
+ family = AF_INET;
+ a4->sin_family = family;
+ a4->sin_port = htons(atoi(argv[3]));
+ } else if (inet_pton(AF_INET6, argv[2], &a6->sin6_addr)) {
+ family = AF_INET6;
+ a6->sin6_family = family;
+ a6->sin6_port = htons(atoi(argv[3]));
+ } else
+ error(1, errno, "can't parse ip %s", argv[2]);
+
+ sock = socket(family, SOCK_STREAM, IPPROTO_MPTCP);
+ if (sock < 0)
+ error(1, errno, "can't create listener sock\n");
+
+ if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &enable, sizeof(enable))) {
+ close(sock);
+ error(1, errno, "can't set SO_REUSEADDR on listener sock\n");
+ }
+
+ err = bind(sock, (struct sockaddr *)&addr,
+ ((family == AF_INET) ? sizeof(struct sockaddr_in) :
+ sizeof(struct sockaddr_in6)));
+
+ if (err == 0 && listen(sock, 30) == 0)
+ pause();
+
+ close(sock);
+ return 0;
+}
+
int set_flags(int fd, int pm_family, int argc, char *argv[])
{
char data[NLMSG_ALIGN(sizeof(struct nlmsghdr)) +
@@ -1375,6 +1427,8 @@ int main(int argc, char *argv[])
return set_flags(fd, pm_family, argc, argv);
else if (!strcmp(argv[1], "events"))
return capture_events(fd, events_mcast_grp);
+ else if (!strcmp(argv[1], "listen"))
+ return add_listener(argc, argv);
fprintf(stderr, "unknown sub-command: %s", argv[1]);
syntax(argv);