From 0e02abfd5770062768eeb4c75061b7d2f656489d Mon Sep 17 00:00:00 2001
From: Martin Mares <mj@ucw.cz>
Date: Mon, 17 May 1999 20:14:52 +0000
Subject: From now we support multiple tables. The master_table variable is
 definitely gone. Both rte_update() and rte_discard() have an additional
 argument telling which table should they modify.

Also, rte_update() no longer walks the whole protocol list -- each table
has a list of all protocols connected to this table and having the
rt_notify hook set. Each protocol can also freely decide (by calling
proto_add_announce_hook) to connect to any other table, but it will
be probably used only by the table-to-table protocol.

The default debugging dumps now include all routing tables and also
all their connections.
---
 nest/proto.c | 33 +++++++++++++++++++++++++++++++--
 1 file changed, 31 insertions(+), 2 deletions(-)

(limited to 'nest/proto.c')

diff --git a/nest/proto.c b/nest/proto.c
index ad4aa11..3199fee 100644
--- a/nest/proto.c
+++ b/nest/proto.c
@@ -86,7 +86,7 @@ proto_new(struct proto_config *c, unsigned size)
   p->preference = c->preference;
   p->disabled = c->disabled;
   p->proto = pr;
-  p->table = &master_table;
+  p->table = (c->table ? : c->global->master_rtc)->table;
   p->in_filter = c->in_filter;
   p->out_filter = c->out_filter;
   return p;
@@ -101,6 +101,33 @@ proto_init_instance(struct proto *p)
   p->attn->data = p;
 }
 
+struct announce_hook *
+proto_add_announce_hook(struct proto *p, struct rtable *t)
+{
+  struct announce_hook *h;
+
+  if (!p->rt_notify)
+    return NULL;
+  DBG("Connecting protocol %s to table %s\n", p->name, t->name);
+  h = mb_alloc(p->pool, sizeof(struct announce_hook));
+  h->table = t;
+  h->proto = p;
+  h->next = p->ahooks;
+  p->ahooks = h;
+  add_tail(&t->hooks, &h->n);
+  return h;
+}
+
+static void
+proto_flush_hooks(struct proto *p)
+{
+  struct announce_hook *h;
+
+  for(h=p->ahooks; h; h=h->next)
+    rem_node(&h->n);
+  p->ahooks = NULL;
+}
+
 void *
 proto_config_new(struct protocol *pr, unsigned size)
 {
@@ -296,6 +323,7 @@ proto_feed(void *P)
   struct proto *p = P;
 
   DBG("Feeding protocol %s\n", p->name);
+  proto_add_announce_hook(p, p->table);
   if_feed_baby(p);
   rt_feed_baby(p);
   p->core_state = FS_HAPPY;
@@ -365,11 +393,12 @@ proto_flush_all(void *unused)
 {
   struct proto *p;
 
-  rt_prune(&master_table);
+  rt_prune_all();
   neigh_prune();
   while ((p = HEAD(flush_proto_list))->n.next)
     {
       DBG("Flushing protocol %s\n", p->name);
+      proto_flush_hooks(p);
       rfree(p->pool);
       p->pool = NULL;
       p->core_state = FS_HUNGRY;
-- 
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