From f6bd206607d9fcad3572841813d7376bd2df4952 Mon Sep 17 00:00:00 2001
From: Martin Mares <mj@ucw.cz>
Date: Sun, 6 Dec 1998 23:13:31 +0000
Subject: All static routes except for device ones should work and
 appear/disappear when their destination comes on/off link. Deserves better
 testing :)

See example in bird.conf.
---
 proto/static/static.c | 94 +++++++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 91 insertions(+), 3 deletions(-)

(limited to 'proto/static/static.c')

diff --git a/proto/static/static.c b/proto/static/static.c
index 679ee6e..bc060cd 100644
--- a/proto/static/static.c
+++ b/proto/static/static.c
@@ -8,6 +8,8 @@
 
 #define LOCAL_DEBUG
 
+#include <string.h>
+
 #include "nest/bird.h"
 #include "nest/iface.h"
 #include "nest/protocol.h"
@@ -18,22 +20,107 @@
 
 #define GET_DATA struct static_proto *p = (struct static_proto *) P
 
+static void
+static_install(struct static_proto *p, struct static_route *r, struct iface *ifa)
+{
+  net *n;
+  rta a, *aa;
+  rte *e;
+
+  DBG("Installing static route %I/%d, rtd=%d\n", r->net, r->masklen, r->dest);
+  bzero(&a, sizeof(a));
+  a.proto = &p->p;
+  a.source = (r->dest == RTD_DEVICE) ? RTS_STATIC_DEVICE : RTS_STATIC;
+  a.scope = SCOPE_UNIVERSE;
+  a.cast = RTC_UNICAST;
+  a.dest = r->dest;
+  a.tos = 0;
+  a.gw = r->via;
+  a.iface = ifa;
+  aa = rta_lookup(&a);
+
+  n = net_get(&master_table, a.tos, r->net, r->masklen);
+  e = rte_get_temp(aa);
+  e->net = n;
+  e->pflags = 0;
+  rte_update(n, &p->p, e);
+}
+
+static void
+static_remove(struct static_proto *p, struct static_route *r)
+{
+  net *n;
+
+  DBG("Removing static route %I/%d\n", r->net, r->masklen);
+  n = net_find(&master_table, 0, r->net, r->masklen);
+  if (n)
+    rte_update(n, &p->p, NULL);
+}
+
 static void
 static_start(struct proto *P)
 {
+  GET_DATA;
+  struct static_route *r;
+
   DBG("Static: take off!\n");
+  WALK_LIST(r, p->other_routes)
+    if (r->dest == RTD_ROUTER)
+      {
+	struct neighbor *n = neigh_find(P, &r->via, NEF_STICKY);
+	if (n)
+	  {
+	    n->data = r;
+	    r->neigh = n;
+	    static_install(p, r, n->iface);
+	  }
+	else
+	  log(L_ERR "Static route destination %I is invalid. Ignoring.\n", r->via);
+      }
+    else
+      static_install(p, r, NULL);
 }
 
 static void
 static_neigh_notify(struct neighbor *n)
 {
-  DBG("Static: neighbor notify got, don't know why.\n");
+  DBG("Static: neighbor notify for %I: iface %p\n", n->addr, n->iface);
+  if (n->iface)
+    static_install((struct static_proto *) n->proto, n->data, n->iface);
+  else
+    static_remove((struct static_proto *) n->proto, n->data);
+}
+
+static void
+static_dump_rt(struct static_route *r)
+{
+  debug("%16I/%2d: ", r->net, r->masklen);
+  switch (r->dest)
+    {
+    case RTD_ROUTER:
+      debug("via %I\n", r->via);
+      break;
+    case RTD_DEVICE:
+      debug("dev %s\n", r->if_name);
+      break;
+    default:
+      debug("rtd %d\n", r->dest);
+      break;
+    }
 }
 
 static void
 static_dump(struct proto *P)
 {
-  DBG("Static: no dumps available in demo version.\n");
+  GET_DATA;
+  struct static_route *r;
+
+  debug("Independent static routes:\n");
+  WALK_LIST(r, p->other_routes)
+    static_dump_rt(r);
+  debug("Device static routes:\n");
+  WALK_LIST(r, p->iface_routes)
+    static_dump_rt(r);
 }
 
 void
@@ -45,7 +132,8 @@ static_init_instance(struct static_proto *P)
   p->start = static_start;
   p->neigh_notify = static_neigh_notify;
   p->dump = static_dump;
-  /* FIXME: Should shutdown remove all routes? */
+  init_list(&P->iface_routes);
+  init_list(&P->other_routes);
 }
 
 static void
-- 
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