Implements protocol templates.

Based on the patch from Alexander V. Chernikov.
Extended to support almost all protocols.
Uses 'protocol bgp NAME from TEMPLATE { ... }' syntax.

2 files changed, 54 insertions, 1 deletions

diff --git a/proto/static/config.Y b/proto/static/config.Y
index 77d2419..621fdf9 100644
--- a/proto/static/config.Y
+++ b/proto/static/config.Y
@@ -26,7 +26,7 @@ CF_GRAMMAR
 CF_ADDTO(proto, static_proto '}')
 
 static_proto_start: proto_start STATIC {
-     this_proto = proto_config_new(&proto_static, sizeof(struct static_config));
+     this_proto = proto_config_new(&proto_static, sizeof(struct static_config), $1);
      static_init_config((struct static_config *) this_proto);
   }
  ;
diff --git a/proto/static/static.c b/proto/static/static.c
index 2f33d81..e5b293c 100644
--- a/proto/static/static.c
+++ b/proto/static/static.c
@@ -470,6 +470,58 @@ static_reconfigure(struct proto *p, struct proto_config *new)
   return 1;
 }
 
+static void
+static_copy_routes(list *dlst, list *slst)
+{
+  struct static_route *dr, *sr;
+
+  init_list(dlst);
+  WALK_LIST(sr, *slst)
+    {
+      /* copy one route */
+      dr = cfg_alloc(sizeof(struct static_route));
+      memcpy(dr, sr, sizeof(struct static_route));
+
+      /* This fn is supposed to be called on fresh src routes, which have 'live'
+	 fields (like .chain, .neigh or .installed) zero, so no need to zero them */
+
+      /* We need to copy multipath chain, because there are backptrs in 'if_name' */
+      if (dr->dest == RTD_MULTIPATH)
+	{
+	  struct static_route *md, *ms, **mp_last;
+
+	  mp_last = &(dr->mp_next);
+	  for (ms = sr->mp_next; ms; ms = ms->mp_next)
+	    {
+	      md = cfg_alloc(sizeof(struct static_route));
+	      memcpy(md, ms, sizeof(struct static_route));
+	      md->if_name = (void *) dr; /* really */
+
+	      *mp_last = md;
+	      mp_last = &(md->mp_next);
+	    }
+	  *mp_last = NULL;
+	}
+
+      add_tail(dlst, (node *) dr);
+    }
+}
+
+static void
+static_copy_config(struct proto_config *dest, struct proto_config *src)
+{
+  struct static_config *d = (struct static_config *) dest;
+  struct static_config *s = (struct static_config *) src;
+
+  /* Shallow copy of everything */
+  proto_copy_rest(dest, src, sizeof(struct static_config));
+
+  /* Copy route lists */
+  static_copy_routes(&d->iface_routes, &s->iface_routes);
+  static_copy_routes(&d->other_routes, &s->other_routes);
+}
+
+
 struct protocol proto_static = {
   name:		"Static",
   template:	"static%d",
@@ -479,6 +531,7 @@ struct protocol proto_static = {
   shutdown:	static_shutdown,
   cleanup:	static_cleanup,
   reconfigure:	static_reconfigure,
+  copy_config:	static_copy_config
 };
 
 static void