Add interface to egress group if it has default route

mekanix · Jul 31, 2022 · afeff25 · afeff25
1 parent fc952ac
commit afeff25
Showing 1 changed file with 14 additions and 0 deletions.
diff --git a/sys/net/route/route_ctl.c b/sys/net/route/route_ctl.c
@@ -1256,9 +1256,23 @@ rib_action(uint32_t fibnum, int action, struct rt_addrinfo *info,
 {
 	int error;
 
+
 	switch (action) {
 	case RTM_ADD:
 		error = rib_add_route(fibnum, info, rc);
+		if (!error && info->rti_ifp) {
+			struct sockaddr *dst = info->rti_info[RTAX_DST];
+			if (dst->sa_family == AF_INET) {
+				char ip[INET6_ADDRSTRLEN > INET_ADDRSTRLEN ? INET6_ADDRSTRLEN : INET_ADDRSTRLEN];
+				struct sockaddr_in *addr_in = (struct sockaddr_in *)dst;
+				inet_ntop(AF_INET, &(addr_in->sin_addr), ip, INET_ADDRSTRLEN);
+				const char *default_ip = "0.0.0.0";
+				int len = strlen(default_ip);
+				if (strncmp(ip, default_ip, len) == 0) {
+					if_addgroup(info->rti_ifp, IFG_EGRESS);
+				}
+			}
+		}
 		break;
 	case RTM_DELETE:
 		error = rib_del_route(fibnum, info, rc);