OSPF: Convert the rte-local attributes to extended attributes

3 files changed, 57 insertions, 67 deletions

diff --git a/nest/route.h b/nest/route.h
index 32200da9..1ed40d68 100644
--- a/nest/route.h
+++ b/nest/route.h
@@ -244,13 +244,6 @@ typedef struct rte {
   byte pflags;				/* Protocol-specific flags */
   btime lastmod;			/* Last modified */
   union {				/* Protocol-dependent data (metrics etc.) */
-#ifdef CONFIG_OSPF
-    struct {
-      u32 metric1, metric2;		/* OSPF Type 1 and Type 2 metrics */
-      u32 tag;				/* External route tag */
-      u32 router_id;			/* Router that originated this route */
-    } ospf;
-#endif
 #ifdef CONFIG_BGP
     struct {
       u8 suppressed;			/* Used for deterministic MED comparison */
diff --git a/proto/ospf/ospf.c b/proto/ospf/ospf.c
index 43b8f037..f9aa6cd1 100644
--- a/proto/ospf/ospf.c
+++ b/proto/ospf/ospf.c
@@ -108,11 +108,8 @@
 #include "ospf.h"
 
 static int ospf_preexport(struct proto *P, rte *new);
-static void ospf_make_tmp_attrs(struct rte *rt, struct linpool *pool);
-static void ospf_store_tmp_attrs(struct rte *rt, struct linpool *pool);
 static void ospf_reload_routes(struct channel *C);
 static int ospf_rte_better(struct rte *new, struct rte *old);
-static int ospf_rte_same(struct rte *new, struct rte *old);
 static u32 ospf_rte_igp_metric(struct rte *rt);
 static void ospf_disp(timer *timer);
 
@@ -379,10 +376,7 @@ ospf_init(struct proto_config *CF)
   P->reload_routes = ospf_reload_routes;
   P->feed_begin = ospf_feed_begin;
   P->feed_end = ospf_feed_end;
-  P->make_tmp_attrs = ospf_make_tmp_attrs;
-  P->store_tmp_attrs = ospf_store_tmp_attrs;
   P->rte_better = ospf_rte_better;
-  P->rte_same = ospf_rte_same;
   P->rte_igp_metric = ospf_rte_igp_metric;
 
   return P;
@@ -392,7 +386,9 @@ ospf_init(struct proto_config *CF)
 static int
 ospf_rte_better(struct rte *new, struct rte *old)
 {
-  if (new->u.ospf.metric1 == LSINFINITY)
+  u32 new_metric1 = ea_get_int(new->attrs->eattrs, EA_OSPF_METRIC1, LSINFINITY);
+
+  if (new_metric1 == LSINFINITY)
     return 0;
 
   if(new->attrs->source < old->attrs->source) return 1;
@@ -400,31 +396,26 @@ ospf_rte_better(struct rte *new, struct rte *old)
 
   if(new->attrs->source == RTS_OSPF_EXT2)
   {
-    if(new->u.ospf.metric2 < old->u.ospf.metric2) return 1;
-    if(new->u.ospf.metric2 > old->u.ospf.metric2) return 0;
+    u32 old_metric2 = ea_get_int(old->attrs->eattrs, EA_OSPF_METRIC2, LSINFINITY);
+    u32 new_metric2 = ea_get_int(new->attrs->eattrs, EA_OSPF_METRIC2, LSINFINITY);
+    if(new_metric2 < old_metric2) return 1;
+    if(new_metric2 > old_metric2) return 0;
   }
 
-  if (new->u.ospf.metric1 < old->u.ospf.metric1)
+  u32 old_metric1 = ea_get_int(old->attrs->eattrs, EA_OSPF_METRIC1, LSINFINITY);
+  if (new_metric1 < old_metric1)
     return 1;
 
   return 0;			/* Old is shorter or same */
 }
 
-static int
-ospf_rte_same(struct rte *new, struct rte *old)
-{
-  /* new->attrs == old->attrs always */
-  return
-    new->u.ospf.metric1 == old->u.ospf.metric1 &&
-    new->u.ospf.metric2 == old->u.ospf.metric2 &&
-    new->u.ospf.tag == old->u.ospf.tag &&
-    new->u.ospf.router_id == old->u.ospf.router_id;
-}
-
 static u32
 ospf_rte_igp_metric(struct rte *rt)
 {
-  return rt->u.ospf.metric1;
+  if (rt->attrs->source == RTS_OSPF_EXT2)
+    return IGP_METRIC_UNKNOWN;
+
+  return ea_get_int(rt->attrs->eattrs, EA_OSPF_METRIC1, LSINFINITY);
 }
 
 void
@@ -507,26 +498,6 @@ ospf_preexport(struct proto *P, rte *e)
   return 0;
 }
 
-static void
-ospf_make_tmp_attrs(struct rte *rt, struct linpool *pool)
-{
-  rte_init_tmp_attrs(rt, pool, 4);
-  rte_make_tmp_attr(rt, EA_OSPF_METRIC1, EAF_TYPE_INT, rt->u.ospf.metric1);
-  rte_make_tmp_attr(rt, EA_OSPF_METRIC2, EAF_TYPE_INT, rt->u.ospf.metric2);
-  rte_make_tmp_attr(rt, EA_OSPF_TAG, EAF_TYPE_INT, rt->u.ospf.tag);
-  rte_make_tmp_attr(rt, EA_OSPF_ROUTER_ID, EAF_TYPE_ROUTER_ID, rt->u.ospf.router_id);
-}
-
-static void
-ospf_store_tmp_attrs(struct rte *rt, struct linpool *pool)
-{
-  rte_init_tmp_attrs(rt, pool, 4);
-  rt->u.ospf.metric1 = rte_store_tmp_attr(rt, EA_OSPF_METRIC1);
-  rt->u.ospf.metric2 = rte_store_tmp_attr(rt, EA_OSPF_METRIC2);
-  rt->u.ospf.tag = rte_store_tmp_attr(rt, EA_OSPF_TAG);
-  rt->u.ospf.router_id = rte_store_tmp_attr(rt, EA_OSPF_ROUTER_ID);
-}
-
 /**
  * ospf_shutdown - Finish of OSPF instance
  * @P: OSPF protocol instance
@@ -616,16 +587,20 @@ ospf_get_route_info(rte * rte, byte * buf)
   }
 
   buf += bsprintf(buf, " %s", type);
-  buf += bsprintf(buf, " (%d/%d", rte->attrs->pref, rte->u.ospf.metric1);
+  buf += bsprintf(buf, " (%d/%d", rte->attrs->pref, ea_get_int(rte->attrs->eattrs, EA_OSPF_METRIC1, LSINFINITY));
   if (rte->attrs->source == RTS_OSPF_EXT2)
-    buf += bsprintf(buf, "/%d", rte->u.ospf.metric2);
+    buf += bsprintf(buf, "/%d", ea_get_int(rte->attrs->eattrs, EA_OSPF_METRIC2, LSINFINITY));
   buf += bsprintf(buf, ")");
-  if ((rte->attrs->source == RTS_OSPF_EXT1 || rte->attrs->source == RTS_OSPF_EXT2) && rte->u.ospf.tag)
+  if (rte->attrs->source == RTS_OSPF_EXT1 || rte->attrs->source == RTS_OSPF_EXT2)
   {
-    buf += bsprintf(buf, " [%x]", rte->u.ospf.tag);
+    eattr *ea = ea_find(rte->attrs->eattrs, EA_OSPF_TAG);
+    if (ea && (ea->u.data > 0))
+      buf += bsprintf(buf, " [%x]", ea->u.data);
   }
-  if (rte->u.ospf.router_id)
-    buf += bsprintf(buf, " [%R]", rte->u.ospf.router_id);
+  
+  eattr *ea = ea_find(rte->attrs->eattrs, EA_OSPF_ROUTER_ID);
+  if (ea)
+    buf += bsprintf(buf, " [%R]", ea->u.data);
 }
 
 static int
diff --git a/proto/ospf/rt.c b/proto/ospf/rt.c
index cda464e0..91d16dd9 100644
--- a/proto/ospf/rt.c
+++ b/proto/ospf/rt.c
@@ -2062,23 +2062,45 @@ again1:
 
       if (reload || ort_changed(nf, &a0))
       {
-	rta *a = rta_lookup(&a0);
-	rte *e = rte_get_temp(a, p->p.main_source);
+	a0.eattrs = alloca(sizeof(ea_list) + 4 * sizeof(eattr));
+	memset(a0.eattrs, 0, sizeof(ea_list));
 
-	rta_free(nf->old_rta);
-	nf->old_rta = rta_clone(a);
-	e->u.ospf.metric1 = nf->old_metric1 = nf->n.metric1;
-	e->u.ospf.metric2 = nf->old_metric2 = nf->n.metric2;
-	e->u.ospf.tag = nf->old_tag = nf->n.tag;
-	e->u.ospf.router_id = nf->old_rid = nf->n.rid;
-	e->pflags = EA_ID_FLAG(EA_OSPF_METRIC1) | EA_ID_FLAG(EA_OSPF_ROUTER_ID);
+	nf->old_metric1 = nf->n.metric1;
+	nf->old_metric2 = nf->n.metric2;
+	nf->old_tag = nf->n.tag;
+	nf->old_rid = nf->n.rid;
+
+	a0.eattrs->attrs[a0.eattrs->count++] = (eattr) {
+	  .id = EA_OSPF_METRIC1,
+	  .type = EAF_TYPE_INT,
+	  .u.data = nf->n.metric1,
+	};
 
 	if (nf->n.type == RTS_OSPF_EXT2)
-	  e->pflags |= EA_ID_FLAG(EA_OSPF_METRIC2);
+	  a0.eattrs->attrs[a0.eattrs->count++] = (eattr) {
+	    .id = EA_OSPF_METRIC2,
+	    .type = EAF_TYPE_INT,
+	    .u.data = nf->n.metric2,
+	  };
 
-	/* Perhaps onfly if tag is non-zero? */
 	if ((nf->n.type == RTS_OSPF_EXT1) || (nf->n.type == RTS_OSPF_EXT2))
-	  e->pflags |= EA_ID_FLAG(EA_OSPF_TAG);
+	  a0.eattrs->attrs[a0.eattrs->count++] = (eattr) {
+	    .id = EA_OSPF_TAG,
+	    .type = EAF_TYPE_INT,
+	    .u.data = nf->n.tag,
+	  };
+
+	a0.eattrs->attrs[a0.eattrs->count++] = (eattr) {
+	  .id = EA_OSPF_ROUTER_ID,
+	  .type = EAF_TYPE_ROUTER_ID,
+	  .u.data = nf->n.rid,
+	};
+
+	rta *a = rta_lookup(&a0);
+	rte *e = rte_get_temp(a, p->p.main_source);
+
+	rta_free(nf->old_rta);
+	nf->old_rta = rta_clone(a);
 
 	DBG("Mod rte type %d - %N via %I on iface %s, met %d\n",
 	    a0.source, nf->fn.addr, a0.gw, a0.iface ? a0.iface->name : "(none)", nf->n.metric1);