ripngd: add support for route tags

ripngd/ripng_interface.c

@@ -383,7 +383,7 @@ ripng_apply_address_add (struct connected *ifc) {
   if ((ripng_enable_if_lookup(ifc->ifp->name) >= 0) ||
       (ripng_enable_network_lookup2(ifc) >= 0))
     ripng_redistribute_add(ZEBRA_ROUTE_CONNECT, RIPNG_ROUTE_INTERFACE,
-                           &address, ifc->ifp->ifindex, NULL);
+                           &address, ifc->ifp->ifindex, NULL, 0);
 
 }
 
@@ -704,13 +704,13 @@ ripng_connect_set (struct interface *ifp, int set)
         if ((ripng_enable_if_lookup(connected->ifp->name) >= 0) ||
             (ripng_enable_network_lookup2(connected) >= 0))
           ripng_redistribute_add (ZEBRA_ROUTE_CONNECT, RIPNG_ROUTE_INTERFACE,
-                                  &address, connected->ifp->ifindex, NULL);
+                                  &address, connected->ifp->ifindex, NULL, 0);
       } else {
         ripng_redistribute_delete (ZEBRA_ROUTE_CONNECT, RIPNG_ROUTE_INTERFACE,
                                    &address, connected->ifp->ifindex);
         if (ripng_redistribute_check (ZEBRA_ROUTE_CONNECT))
           ripng_redistribute_add (ZEBRA_ROUTE_CONNECT, RIPNG_ROUTE_REDISTRIBUTE,
-                                  &address, connected->ifp->ifindex, NULL);
+                                  &address, connected->ifp->ifindex, NULL, 0);
       }
     }
 }

ripngd/ripng_zebra.c

@@ -91,6 +91,12 @@ ripng_zebra_ipv6_send (struct route_node *rp, u_char cmd)
       SET_FLAG (api.message, ZAPI_MESSAGE_METRIC);
       api.metric = rinfo->metric;
 
+      if (rinfo->tag)
+        {
+          SET_FLAG (api.message, ZAPI_MESSAGE_TAG);
+          api.tag = rinfo->tag;
+        }
+
       zapi_ipv6_route (cmd, zclient,
                        (struct prefix_ipv6 *)&rp->p, &api);
 
@@ -172,8 +178,14 @@ ripng_zebra_read_ipv6 (int command, struct zclient *zclient,
   else
     api.metric = 0;
 
+  if (CHECK_FLAG (api.message, ZAPI_MESSAGE_TAG))
+    api.tag = stream_getl (s);
+  else
+    api.tag = 0;
+
   if (command == ZEBRA_IPV6_ROUTE_ADD)
-    ripng_redistribute_add (api.type, RIPNG_ROUTE_REDISTRIBUTE, &p, ifindex, &nexthop);
+    ripng_redistribute_add (api.type, RIPNG_ROUTE_REDISTRIBUTE, &p,
+                            ifindex, &nexthop, api.tag);
   else
     ripng_redistribute_delete (api.type, RIPNG_ROUTE_REDISTRIBUTE, &p, ifindex);
 

ripngd/ripngd.c

@@ -905,7 +905,8 @@ ripng_route_process (struct rte *rte, struct sockaddr_in6 *from,
 /* Add redistributed route to RIPng table. */
 void
 ripng_redistribute_add (int type, int sub_type, struct prefix_ipv6 *p, 
-			ifindex_t ifindex, struct in6_addr *nexthop)
+			ifindex_t ifindex, struct in6_addr *nexthop,
+			route_tag_t tag)
 {
   struct route_node *rp;
   struct ripng_info *rinfo = NULL, newinfo;
@@ -924,6 +925,8 @@ ripng_redistribute_add (int type, int sub_type, struct prefix_ipv6 *p,
   newinfo.sub_type = sub_type;
   newinfo.ifindex = ifindex;
   newinfo.metric = 1;
+  if (tag <= UINT16_MAX) /* RIPng only supports 16 bit tags */
+    newinfo.tag = tag;
   newinfo.rp = rp;
   if (nexthop && IN6_IS_ADDR_LINKLOCAL(nexthop))
     newinfo.nexthop = *nexthop;
@@ -2214,7 +2217,7 @@ DEFUN (ripng_route,
     }
   rp->info = (void *)1;
 
-  ripng_redistribute_add (ZEBRA_ROUTE_RIPNG, RIPNG_ROUTE_STATIC, &p, 0, NULL);
+  ripng_redistribute_add (ZEBRA_ROUTE_RIPNG, RIPNG_ROUTE_STATIC, &p, 0, NULL, 0);
 
   return CMD_SUCCESS;
 }
@@ -2551,7 +2554,7 @@ DEFUN (ripng_default_information_originate,
     ripng->default_information = 1;
 
     str2prefix_ipv6 ("::/0", &p);
-    ripng_redistribute_add (ZEBRA_ROUTE_RIPNG, RIPNG_ROUTE_DEFAULT, &p, 0, NULL);
+    ripng_redistribute_add (ZEBRA_ROUTE_RIPNG, RIPNG_ROUTE_DEFAULT, &p, 0, NULL, 0);
   }
 
   return CMD_SUCCESS;

ripngd/ripngd.h

@@ -381,7 +381,7 @@ extern void ripng_info_free (struct ripng_info *rinfo);
 extern void ripng_event (enum ripng_event, int);
 extern int ripng_request (struct interface *ifp);
 extern void ripng_redistribute_add (int, int, struct prefix_ipv6 *,
-                                    ifindex_t, struct in6_addr *);
+                                    ifindex_t, struct in6_addr *, route_tag_t);
 extern void ripng_redistribute_delete (int, int, struct prefix_ipv6 *,
                                        ifindex_t);
 extern void ripng_redistribute_withdraw (int type);