From 2ef9177a47e7137dd09b06a353a6e5f6e671c951 Mon Sep 17 00:00:00 2001
From: Matthias Schiffer <mschiffer@universe-factory.net>
Date: Sun, 14 Nov 2010 05:49:56 +0100
Subject: Add multicast support to static protocol and generic route handling.

---
 proto/static/config.Y |  4 +++-
 proto/static/static.c | 18 +++++++++---------
 proto/static/static.h |  1 +
 3 files changed, 13 insertions(+), 10 deletions(-)

(limited to 'proto')

diff --git a/proto/static/config.Y b/proto/static/config.Y
index a7e5016..b089864 100644
--- a/proto/static/config.Y
+++ b/proto/static/config.Y
@@ -16,7 +16,7 @@ static struct static_route *this_srt;
 
 CF_DECLS
 
-CF_KEYWORDS(STATIC, ROUTE, VIA, DROP, REJECT, PROHIBIT, PREFERENCE)
+CF_KEYWORDS(STATIC, ROUTE, VIA, DROP, REJECT, PROHIBIT, PREFERENCE, MULTICAST)
 
 CF_GRAMMAR
 
@@ -39,6 +39,7 @@ stat_route0: ROUTE prefix {
      add_tail(&((struct static_config *) this_proto)->other_routes, &this_srt->n);
      this_srt->net = $2.addr;
      this_srt->masklen = $2.len;
+     this_srt->cast = RTC_UNICAST;
   }
  ;
 
@@ -56,6 +57,7 @@ stat_route:
  | stat_route0 DROP { this_srt->dest = RTD_BLACKHOLE; }
  | stat_route0 REJECT { this_srt->dest = RTD_UNREACHABLE; }
  | stat_route0 PROHIBIT { this_srt->dest = RTD_PROHIBIT; }
+ | stat_route MULTICAST { this_srt->cast = RTC_MULTICAST; }
  ;
 
 CF_CLI(SHOW STATIC, optsym, [<name>], [[Show details of static protocol]])
diff --git a/proto/static/static.c b/proto/static/static.c
index 6b42a37..e15a43b 100644
--- a/proto/static/static.c
+++ b/proto/static/static.c
@@ -23,7 +23,7 @@
  * newly added routes and removes the obsolete ones.
  */
 
-#undef LOCAL_DEBUG
+#define LOCAL_DEBUG
 
 #include "nest/bird.h"
 #include "nest/iface.h"
@@ -45,18 +45,18 @@ static_install(struct proto *p, struct static_route *r, struct iface *ifa)
   if (r->installed)
     return;
 
-  DBG("Installing static route %I/%d, rtd=%d\n", r->net, r->masklen, r->dest);
+  DBG("Installing static route %I/%d, rtd=%d%s\n", r->net, r->masklen, r->dest, (r->cast == RTC_MULTICAST) ? ", multicast" : "");
   bzero(&a, sizeof(a));
   a.proto = p;
   a.source = (r->dest == RTD_DEVICE) ? RTS_STATIC_DEVICE : RTS_STATIC;
   a.scope = SCOPE_UNIVERSE;
-  a.cast = RTC_UNICAST;
+  a.cast = r->cast;
   a.dest = r->dest;
   a.gw = r->via;
   a.iface = ifa;
   aa = rta_lookup(&a);
 
-  n = net_get(p->table, r->net, r->masklen);
+  n = net_get2(p->table, r->net, r->masklen, r->cast);
   e = rte_get_temp(aa);
   e->net = n;
   e->pflags = 0;
@@ -72,8 +72,8 @@ static_remove(struct proto *p, struct static_route *r)
   if (!r->installed)
     return;
 
-  DBG("Removing static route %I/%d\n", r->net, r->masklen);
-  n = net_find(p->table, r->net, r->masklen);
+  DBG("Removing static route %I/%d%s\n", r->net, r->masklen, (r->cast == RTC_MULTICAST) ? ", multicast" : "");
+  n = net_find2(p->table, r->net, r->masklen, r->cast);
   if (n)
     rte_update(p->table, n, p, p, NULL);
   r->installed = 0;
@@ -247,13 +247,13 @@ static_match(struct proto *p, struct static_route *r, struct static_config *n)
   if (r->neigh)
     r->neigh->data = NULL;
   WALK_LIST(t, n->iface_routes)
-    if (static_same_net(r, t))
+    if (static_same_net(r, t) && r->cast == t->cast)
       {
 	t->installed = static_same_dest(r, t);
 	return;
       }
   WALK_LIST(t, n->other_routes)
-    if (static_same_net(r, t))
+    if (static_same_net(r, t) && r->cast == t->cast)
       {
 	t->installed = static_same_dest(r, t);
 	return;
@@ -311,7 +311,7 @@ static_show_rt(struct static_route *r)
     case RTD_PROHIBIT:	bsprintf(via, "prohibited"); break;
     default:		bsprintf(via, "???");
     }
-  cli_msg(-1009, "%I/%d %s%s", r->net, r->masklen, via, r->installed ? "" : " (dormant)");
+  cli_msg(-1009, "%I/%d %s%s%s", r->net, r->masklen, via, r->cast == RTC_MULTICAST ? "" : " multicast", r->installed ? "" : " (dormant)");
 }
 
 void
diff --git a/proto/static/static.h b/proto/static/static.h
index 5d2bd21..e100068 100644
--- a/proto/static/static.h
+++ b/proto/static/static.h
@@ -26,6 +26,7 @@ struct static_route {
   ip_addr via;				/* Destination router */
   struct neighbor *neigh;
   byte *if_name;			/* Name for RTD_DEVICE routes */
+  int cast;
   int installed;			/* Installed in master table */
 };
 
-- 
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