From 31b3e1bbf5bc823ec5cf6d88931132f00e6c52b9 Mon Sep 17 00:00:00 2001
From: Martin Mares <mj@ucw.cz>
Date: Fri, 5 Feb 1999 21:37:34 +0000
Subject: Implemented new configuration/reconfiguration interface and defined
 protocol state machines. Full explanation will follow soon.

---
 nest/proto.c | 104 ++++++++++++++++++++++++++++++++++++++---------------------
 1 file changed, 67 insertions(+), 37 deletions(-)

(limited to 'nest/proto.c')

diff --git a/nest/proto.c b/nest/proto.c
index cb3113f..976a967 100644
--- a/nest/proto.c
+++ b/nest/proto.c
@@ -1,7 +1,7 @@
 /*
  *	BIRD -- Protocols
  *
- *	(c) 1998 Martin Mares <mj@ucw.cz>
+ *	(c) 1998--1999 Martin Mares <mj@ucw.cz>
  *
  *	Can be freely distributed and used under the terms of the GNU GPL.
  */
@@ -23,47 +23,83 @@ list proto_list;
 list inactive_proto_list;
 
 void *
-proto_new(struct protocol *pr, unsigned size)
+proto_new(struct proto_config *c, unsigned size)
 {
-  struct proto *p = cfg_allocz(size);
+  struct protocol *pr = c->proto;
+  struct proto *p = cfg_allocz(size);	/* FIXME: Allocate from global pool */
 
-  debug("proto_new(%s)\n", pr->name);
+  p->cf = c;
+  p->debug = c->debug;
+  p->preference = c->preference;
+  p->disabled = c->disabled;
   p->proto = pr;
-  p->name = pr->name;
-  p->debug = pr->debug;
-  p->pool = rp_new(&root_pool, pr->name);
-  add_tail(&inactive_proto_list, &p->n);
+  p->pool = rp_new(&root_pool, c->name);
   return p;
 }
 
+void *
+proto_config_new(struct protocol *pr, unsigned size)
+{
+  struct proto_config *c = cfg_allocz(size);
+
+  add_tail(&new_config->protos, &c->n);
+  c->global = new_config;
+  c->proto = pr;
+  c->debug = pr->debug;
+  c->name = pr->name;
+  return c;
+}
+
 void
-protos_preconfig(void)
+protos_preconfig(struct config *c)
 {
   struct protocol *p;
 
   init_list(&proto_list);
   init_list(&inactive_proto_list);
-  debug("Protocol preconfig\n");
+  debug("Protocol preconfig:");
   WALK_LIST(p, protocol_list)
     {
-      debug("...%s\n", p->name);
+      debug(" %s", p->name);
       if (p->preconfig)
-	p->preconfig(p);
+	p->preconfig(p, c);
     }
+  debug("\n");
 }
 
 void
-protos_postconfig(void)
+protos_postconfig(struct config *c)
 {
+  struct proto_config *x;
   struct protocol *p;
 
-  debug("Protocol postconfig\n");
-  WALK_LIST(p, protocol_list)
+  debug("Protocol postconfig:");
+  WALK_LIST(x, c->protos)
     {
-      debug("...%s\n", p->name);
+      debug(" %s", x->name);
+      p = x->proto;
       if (p->postconfig)
-	p->postconfig(p);
+	p->postconfig(x);
+    }
+  debug("\n");
+}
+
+void
+protos_commit(struct config *c)
+{
+  struct proto_config *x;
+  struct protocol *p;
+  struct proto *q;
+
+  debug("Protocol commit:");
+  WALK_LIST(x, c->protos)
+    {
+      debug(" %s", x->name);
+      p = x->proto;
+      q = p->init(x);
+      add_tail(&inactive_proto_list, &q->n);
     }
+  debug("\n");
 }
 
 static void
@@ -72,12 +108,15 @@ proto_start(struct proto *p)
   rem_node(&p->n);
   if (p->disabled)
     return;
-  p->state = PRS_STARTING;
-  if (p->start)
-    p->start(p);
+  p->proto_state = PS_DOWN;
+  p->core_state = FS_HUNGRY;
+  if (p->proto->start && p->proto->start(p) != PS_UP)
+    bug("Delayed protocol start not supported yet");
+  p->proto_state = PS_UP;
+  p->core_state = FS_FEEDING;
   if_feed_baby(p);
   rt_feed_baby(p);
-  p->state = PRS_UP;
+  p->core_state = FS_HAPPY;
   add_tail(&proto_list, &p->n);
 }
 
@@ -89,7 +128,7 @@ protos_start(void)
   debug("Protocol start\n");
   WALK_LIST_DELSAFE(p, n, inactive_proto_list)
     {
-      debug("...%s\n", p->name);
+      debug("Starting %s\n", p->cf->name);
       proto_start(p);
     }
 }
@@ -98,19 +137,21 @@ void
 protos_dump_all(void)
 {
   struct proto *p;
+  static char *p_states[] = { "DOWN", "START", "UP", "STOP" };
+  static char *c_states[] = { "HUNGRY", "FEEDING", "HAPPY", "FLUSHING" };
 
   debug("Protocols:\n");
 
   WALK_LIST(p, proto_list)
     {
-      debug("  protocol %s:\n", p->name);
+      debug("  protocol %s: state %s/%s\n", p->cf->name, p_states[p->proto_state], c_states[p->core_state]);
       if (p->disabled)
 	debug("\tDISABLED\n");
-      else if (p->dump)
-	p->dump(p);
+      else if (p->proto->dump)
+	p->proto->dump(p);
     }
   WALK_LIST(p, inactive_proto_list)
-    debug("  inactive %s\n", p->name);
+    debug("  inactive %s\n", p->cf->name);
 }
 
 void
@@ -125,14 +166,3 @@ protos_build(void)
   add_tail(&protocol_list, &proto_static.n);
 #endif
 }
-
-void
-protos_init(void)
-{
-  struct protocol *p;
-
-  debug("Initializing protocols\n");
-  WALK_LIST(p, protocol_list)
-    if (p->init)
-      p->init(p);
-}
-- 
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