Route import API redefinition.

Hidden rte_get_temp() into rte_update().
Split rte_update() / rte_withdraw().

nest/protocol.h

@@ -637,18 +637,4 @@ void *channel_config_new(const struct channel_class *cc, const char *name, uint
 void *channel_config_get(const struct channel_class *cc, const char *name, uint net_type, struct proto_config *proto);
 int channel_reconfigure(struct channel *c, struct channel_config *cf);
 
-
-/* Moved from route.h to avoid dependency conflicts */
-static inline void rte_update(struct proto *p, const net_addr *n, rte *new) { rte_update2(p->main_channel, n, new, p->main_source); }
-
-static inline void
-rte_update3(struct channel *c, const net_addr *n, rte *new, struct rte_src *src)
-{
-  if (c->in_table && !rte_update_in(c, n, new, src))
-    return;
-
-  rte_update2(c, n, new, src);
-}
-
-
 #endif

nest/route.h

@@ -301,6 +301,51 @@ static inline int rte_is_filtered(rte *r) { return !!(r->flags & REF_FILTERED);
 #define RIC_REJECT	-1		/* Rejected by protocol */
 #define RIC_DROP	-2		/* Silently dropped by protocol */
 
+/**
+ * rte_update - enter a new update to a routing table
+ * @c: channel doing the update
+ * @net: network address
+ * @rte: a &rte representing the new route
+ *
+ * This function imports a new route to the appropriate table (via the channel).
+ * Table keys are @net (obligatory) and @rte->attrs->src.
+ * Both the @net and @rte pointers can be local.
+ *
+ * The route attributes (@rte->attrs) are obligatory. They can be also allocated
+ * locally. Anyway, if you use an already-cached attribute object, you shall
+ * call rta_clone() on that object yourself. (This semantics may change in future.)
+ *
+ * If the route attributes are local, you may set @rte->attrs->src to NULL, then
+ * the protocol's default route source will be supplied.
+ *
+ * When rte_update() gets a route, it automatically validates it. This includes
+ * checking for validity of the given network and next hop addresses and also
+ * checking for host-scope or link-scope routes. Then the import filters are
+ * processed and if accepted, the route is passed to route table recalculation.
+ *
+ * The accepted routes are then inserted into the table, replacing the old route
+ * (key is the @net together with @rte->attrs->src). Then the route is announced
+ * to all the channels connected to the table using the standard export mechanism.
+ *
+ * All memory used for temporary allocations is taken from a special linpool
+ * @rte_update_pool and freed when rte_update() finishes.
+ */
+void rte_update(struct channel *c, const net_addr *net, struct rte *rte);
+
+/**
+ * rte_withdraw - withdraw a route from a routing table
+ * @c: channel doing the withdraw
+ * @net: network address
+ * @src: the route source identifier
+ *
+ * This function withdraws a previously announced route from the table.
+ * No import filter is called. This function is idempotent. If no route
+ * is found under the given key, it does nothing.
+ *
+ * If @src is NULL, the protocol's default route source is used.
+ */
+void rte_withdraw(struct channel *c, const net_addr *net, struct rte_src *src);
+
 extern list routing_tables;
 struct config;
 
@@ -319,9 +364,6 @@ static inline net *net_get(rtable *tab, const net_addr *addr) { return (net *) f
 void *net_route(rtable *tab, const net_addr *n);
 int net_roa_check(rtable *tab, const net_addr *n, u32 asn);
 rte *rte_find(net *net, struct rte_src *src);
-rte *rte_get_temp(struct rta *);
-void rte_update2(struct channel *c, const net_addr *n, rte *new, struct rte_src *src);
-/* rte_update() moved to protocol.h to avoid dependency conflicts */
 int rt_examine(rtable *t, net_addr *a, struct proto *p, const struct filter *filter);
 rte *rt_export_merged(struct channel *c, net *net, rte **rt_free, linpool *pool, int silent);
 void rt_refresh_begin(rtable *t, struct channel *c);
@@ -331,6 +373,7 @@ void rt_schedule_prune(rtable *t);
 void rte_dump(rte *);
 void rte_free(rte *);
 rte *rte_do_cow(rte *);
+rte *rte_store(rte *);
 static inline rte * rte_cow(rte *r) { return (r->flags & REF_COW) ? rte_do_cow(r) : r; }
 rte *rte_cow_rta(rte *r, linpool *lp);
 void rte_init_tmp_attrs(struct rte *r, linpool *lp, uint max);
@@ -341,7 +384,6 @@ void rt_dump(rtable *);
 void rt_dump_all(void);
 int rt_feed_channel(struct channel *c);
 void rt_feed_channel_abort(struct channel *c);
-int rte_update_in(struct channel *c, const net_addr *n, rte *new, struct rte_src *src);
 int rt_reload_channel(struct channel *c);
 void rt_reload_channel_abort(struct channel *c);
 void rt_prune_sync(rtable *t, int all);

nest/rt-dev.c

@@ -66,34 +66,27 @@ dev_ifa_notify(struct proto *P, uint flags, struct ifa *ad)
       DBG("dev_if_notify: %s:%I going down\n", ad->iface->name, ad->ip);
 
       /* Use iface ID as local source ID */
-      struct rte_src *src = rt_get_source(P, ad->iface->index);
+      rte_withdraw(c, net, rt_get_source(P, ad->iface->index));
-      rte_update2(c, net, NULL, src);
     }
   else if (flags & IF_CHANGE_UP)
     {
-      rta *a;
-      rte *e;
-
       DBG("dev_if_notify: %s:%I going up\n", ad->iface->name, ad->ip);
 
       if (cf->check_link && !(ad->iface->flags & IF_LINK_UP))
 	return;
 
-      /* Use iface ID as local source ID */
-      struct rte_src *src = rt_get_source(P, ad->iface->index);
-
       rta a0 = {
-	.src = src,
+	/* Use iface ID as local source ID */
+	.src = rt_get_source(P, ad->iface->index),
 	.source = RTS_DEVICE,
 	.scope = SCOPE_UNIVERSE,
 	.dest = RTD_UNICAST,
 	.nh.iface = ad->iface,
       };
-
+      rte e0 = {
-      a = rta_lookup(&a0);
+	.attrs = rta_lookup(&a0),
-      e = rte_get_temp(a);
+      };
-      e->pflags = 0;
+      rte_update(c, net, &e0);
-      rte_update2(c, net, e, src);
     }
 }
 

nest/rt-table.c

@@ -269,27 +269,6 @@ rte_find(net *net, struct rte_src *src)
   return e;
 }
 
-/**
- * rte_get_temp - get a temporary &rte
- * @a: attributes to assign to the new route (a &rta; in case it's
- * un-cached, rte_update() will create a cached copy automatically)
- *
- * Create a temporary &rte and bind it with the attributes @a.
- * Also set route preference to the default preference set for
- * the protocol.
- */
-rte *
-rte_get_temp(rta *a)
-{
-  rte *e = sl_alloc(rte_slab);
-
-  e->attrs = a;
-  e->id = 0;
-  e->flags = 0;
-  e->pref = 0;
-  return e;
-}
-
 rte *
 rte_do_cow(rte *r)
 {
@@ -301,6 +280,18 @@ rte_do_cow(rte *r)
   return e;
 }
 
+rte *
+rte_store(rte *r)
+{
+  rte *e = sl_alloc(rte_slab);
+  memcpy(e, r, sizeof(rte));
+  if (e->attrs->aflags & RTAF_CACHED)
+    e->attrs = rta_clone(r->attrs);
+  else
+    e->attrs = rta_lookup(r->attrs);
+  return e;
+}
+
 /**
  * rte_cow_rta - get a private writable copy of &rte with writable &rta
  * @r: a route entry to be copied
@@ -1397,49 +1388,7 @@ rte_unhide_dummy_routes(net *net, rte **dummy)
   }
 }
 
-/**
+static void
- * rte_update - enter a new update to a routing table
- * @table: table to be updated
- * @c: channel doing the update
- * @net: network node
- * @p: protocol submitting the update
- * @src: protocol originating the update
- * @new: a &rte representing the new route or %NULL for route removal.
- *
- * This function is called by the routing protocols whenever they discover
- * a new route or wish to update/remove an existing route. The right announcement
- * sequence is to build route attributes first (either un-cached with @aflags set
- * to zero or a cached one using rta_lookup(); in this case please note that
- * you need to increase the use count of the attributes yourself by calling
- * rta_clone()), call rte_get_temp() to obtain a temporary &rte, fill in all
- * the appropriate data and finally submit the new &rte by calling rte_update().
- *
- * @src specifies the protocol that originally created the route and the meaning
- * of protocol-dependent data of @new. If @new is not %NULL, @src have to be the
- * same value as @new->attrs->proto. @p specifies the protocol that called
- * rte_update(). In most cases it is the same protocol as @src. rte_update()
- * stores @p in @new->sender;
- *
- * When rte_update() gets any route, it automatically validates it (checks,
- * whether the network and next hop address are valid IP addresses and also
- * whether a normal routing protocol doesn't try to smuggle a host or link
- * scope route to the table), converts all protocol dependent attributes stored
- * in the &rte to temporary extended attributes, consults import filters of the
- * protocol to see if the route should be accepted and/or its attributes modified,
- * stores the temporary attributes back to the &rte.
- *
- * Now, having a "public" version of the route, we
- * automatically find any old route defined by the protocol @src
- * for network @n, replace it by the new one (or removing it if @new is %NULL),
- * recalculate the optimal route for this destination and finally broadcast
- * the change (if any) to all routing protocols by calling rte_announce().
- *
- * All memory used for attribute lists and other temporary allocations is taken
- * from a special linear pool @rte_update_pool and freed when rte_update()
- * finishes.
- */
-
-void
 rte_update2(struct channel *c, const net_addr *n, rte *new, struct rte_src *src)
 {
   // struct proto *p = c->proto;
@@ -1543,6 +1492,29 @@ rte_update2(struct channel *c, const net_addr *n, rte *new, struct rte_src *src)
   rte_update_unlock();
 }
 
+static int rte_update_in(struct channel *c, const net_addr *n, rte *new, struct rte_src *src);
+
+void
+rte_withdraw(struct channel *c, const net_addr *n, struct rte_src *src)
+{
+  if (!c->in_table || rte_update_in(c, n, NULL, src))
+    rte_update2(c, n, NULL, src ?: c->proto->main_source);
+}
+
+void
+rte_update(struct channel *c, const net_addr *n, struct rte *new)
+{
+  ASSERT(new);
+  ASSERT(new->attrs);
+  ASSERT(new->attrs->src);
+
+  rte *e = sl_alloc(rte_slab);
+  *e = *new;
+
+  if (!c->in_table || rte_update_in(c, n, e, e->attrs->src))
+    rte_update2(c, n, e, e->attrs->src);
+}
+
 /* Independent call to rte_announce(), used from next hop
    recalculation, outside of rte_update(). new must be non-NULL */
 static inline void
@@ -2507,7 +2479,7 @@ rt_feed_channel_abort(struct channel *c)
  *	Import table
  */
 
-int
+static int
 rte_update_in(struct channel *c, const net_addr *n, rte *new, struct rte_src *src)
 {
   struct rtable *tab = c->in_table;

proto/babel/babel.c

@@ -647,15 +647,18 @@ babel_announce_rte(struct babel_proto *p, struct babel_entry *e)
     if (!neigh_find(&p->p, r->next_hop, r->neigh->ifa->iface, 0))
       a0.nh.flags = RNF_ONLINK;
 
-    rta *a = rta_lookup(&a0);
+    rte e0 = {
-    rte *rte = rte_get_temp(a);
+      .attrs = rta_lookup(&a0),
-    rte->u.babel.seqno = r->seqno;
+      .u.babel = {
-    rte->u.babel.metric = r->metric;
+	.seqno = r->seqno,
-    rte->u.babel.router_id = r->router_id;
+	.metric = r->metric,
-    rte->pflags = EA_ID_FLAG(EA_BABEL_METRIC) | EA_ID_FLAG(EA_BABEL_ROUTER_ID);
+	.router_id = r->router_id,
+      },
+      .pflags = EA_ID_FLAG(EA_BABEL_METRIC) | EA_ID_FLAG(EA_BABEL_ROUTER_ID),
+    };
 
     e->unreachable = 0;
-    rte_update2(c, e->n.addr, rte, p->p.main_source);
+    rte_update(c, e->n.addr, &e0);
   }
   else if (e->valid && (e->router_id != p->router_id))
   {
@@ -667,20 +670,19 @@ babel_announce_rte(struct babel_proto *p, struct babel_entry *e)
       .dest = RTD_UNREACHABLE,
     };
 
-    rta *a = rta_lookup(&a0);
+    rte e0 = {
-    rte *rte = rte_get_temp(a);
+      .attrs = &a0,
-    memset(&rte->u.babel, 0, sizeof(rte->u.babel));
+      .pref = 1,
-    rte->pflags = 0;
+    };
-    rte->pref = 1;
 
     e->unreachable = 1;
-    rte_update2(c, e->n.addr, rte, p->p.main_source);
+    rte_update(c, e->n.addr, &e0);
   }
   else
   {
     /* Retraction */
     e->unreachable = 0;
-    rte_update2(c, e->n.addr, NULL, p->p.main_source);
+    rte_withdraw(c, e->n.addr, p->p.main_source);
   }
 }
 
@@ -690,7 +692,7 @@ babel_announce_retraction(struct babel_proto *p, struct babel_entry *e)
 {
   struct channel *c = (e->n.addr->type == NET_IP4) ? p->ip4_channel : p->ip6_channel;
   e->unreachable = 0;
-  rte_update2(c, e->n.addr, NULL, p->p.main_source);
+  rte_withdraw(c, e->n.addr, p->p.main_source);
 }
 
 

proto/bgp/packets.c

@@ -1348,7 +1348,7 @@ bgp_rte_update(struct bgp_parse_state *s, net_addr *n, u32 path_id, rta *a0)
   if (!a0)
   {
     /* Route withdraw */
-    rte_update3(&s->channel->c, n, NULL, s->last_src);
+    rte_withdraw(&(s->channel->c), n, s->last_src);
     return;
   }
 
@@ -1363,13 +1363,12 @@ bgp_rte_update(struct bgp_parse_state *s, net_addr *n, u32 path_id, rta *a0)
     a0->eattrs = ea;
   }
 
-  rta *a = rta_clone(s->cached_rta);
+  rte e0 = {
-  rte *e = rte_get_temp(a);
+    .attrs = rta_clone(s->cached_rta),
+    .u.bgp.stale = -1,
+  };
 
-  e->pflags = 0;
+  rte_update(&(s->channel->c), n, &e0);
-  e->u.bgp.suppressed = 0;
-  e->u.bgp.stale = -1;
-  rte_update3(&s->channel->c, n, e, s->last_src);
 }
 
 static void

proto/ospf/rt.c

@@ -2056,27 +2056,29 @@ again1:
 
       if (reload || ort_changed(nf, &a0))
       {
-	rta *a = rta_lookup(&a0);
+	rte e0 = {
-	rte *e = rte_get_temp(a);
+	  .attrs = rta_lookup(&a0),
+	  .u.ospf.metric1 = nf->old_metric1 = nf->n.metric1,
+	  .u.ospf.metric2 = nf->old_metric2 = nf->n.metric2,
+	  .u.ospf.tag = nf->old_tag = nf->n.tag,
+	  .u.ospf.router_id = nf->old_rid = nf->n.rid,
+	  .pflags = EA_ID_FLAG(EA_OSPF_METRIC1) | EA_ID_FLAG(EA_OSPF_ROUTER_ID),
+	};
 
 	rta_free(nf->old_rta);
-	nf->old_rta = rta_clone(a);
+	nf->old_rta = rta_clone(e0.attrs);
-	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);
 
 	if (nf->n.type == RTS_OSPF_EXT2)
-	  e->pflags |= EA_ID_FLAG(EA_OSPF_METRIC2);
+	  e0.pflags |= EA_ID_FLAG(EA_OSPF_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);
+	  e0.pflags |= EA_ID_FLAG(EA_OSPF_TAG);
 
 	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);
-	rte_update(&p->p, nf->fn.addr, e);
+
+	rte_update(p->p.main_channel, nf->fn.addr, &e0);
       }
     }
     else if (nf->old_rta)
@@ -2085,7 +2087,7 @@ again1:
       rta_free(nf->old_rta);
       nf->old_rta = NULL;
 
-      rte_update(&p->p, nf->fn.addr, NULL);
+      rte_withdraw(p->p.main_channel, nf->fn.addr, p->p.main_source);
     }
 
     /* Remove unused rt entry, some special entries are persistent */
@@ -2101,7 +2103,6 @@ again1:
   }
   FIB_ITERATE_END;
 
-
   WALK_LIST(oa, p->area_list)
   {
     /* Cleanup ASBR hash tables */

proto/perf/perf.c

@@ -160,18 +160,17 @@ perf_loop(void *data)
 
   clock_gettime(CLOCK_MONOTONIC, &ts_generated);
 
-  for (uint i=0; i<N; i++) {
+  for (uint i=0; i<N; i++)
-    rte *e = rte_get_temp(p->data[i].a);
+  {
-    e->pflags = 0;
+    rte e0 = { .attrs = p->data[i].a, };
-
+    rte_update(P->main_channel, &(p->data[i].net), &e0);
-    rte_update(P, &(p->data[i].net), e);
   }
 
   clock_gettime(CLOCK_MONOTONIC, &ts_update);
 
   if (!p->keep)
     for (uint i=0; i<N; i++)
-      rte_update(P, &(p->data[i].net), NULL);
+      rte_withdraw(P->main_channel, &(p->data[i].net), p->p.main_source);
 
   clock_gettime(CLOCK_MONOTONIC, &ts_withdraw);
 

proto/pipe/pipe.c

@@ -50,7 +50,7 @@ pipe_rt_notify(struct proto *P, struct channel *src_ch, net *n, rte *new, rte *o
   struct channel *dst = (src_ch == p->pri) ? p->sec : p->pri;
   struct rte_src *src;
 
-  rte *e;
+  rte e0 = {}, *e = &e0;
   rta *a;
 
   if (!new && !old)
@@ -70,7 +70,8 @@ pipe_rt_notify(struct proto *P, struct channel *src_ch, net *n, rte *new, rte *o
 
       a->aflags = 0;
       a->hostentry = NULL;
-      e = rte_get_temp(a);
+
+      e->attrs = rta_lookup(a);
       e->pflags = 0;
 
       /* Copy protocol specific embedded attributes. */
@@ -93,7 +94,10 @@ pipe_rt_notify(struct proto *P, struct channel *src_ch, net *n, rte *new, rte *o
     }
 
   src_ch->table->pipe_busy = 1;
-  rte_update2(dst, n->n.addr, e, src);
+  if (e)
+    rte_update(dst, n->n.addr, e);
+  else
+    rte_withdraw(dst, n->n.addr, src);
   src_ch->table->pipe_busy = 0;
 }
 

proto/rip/rip.c

@@ -188,21 +188,20 @@ rip_announce_rte(struct rip_proto *p, struct rip_entry *en)
       a0.nh.iface = rt->from->ifa->iface;
     }
 
-    rta *a = rta_lookup(&a0);
+    rte e0 = {
-    rte *e = rte_get_temp(a);
+      .attrs = rta_lookup(&a0),
+      .u.rip = {
+	.from = a0.nh.iface,
+	.metric = rt_metric,
+	.tag = rt_tag,
+      },
+      .pflags = EA_ID_FLAG(EA_RIP_METRIC) | EA_ID_FLAG(EA_RIP_TAG)
+    };
 
-    e->u.rip.from = a0.nh.iface;
+    rte_update(p->p.main_channel, en->n.addr, &e0);
-    e->u.rip.metric = rt_metric;
-    e->u.rip.tag = rt_tag;
-    e->pflags = EA_ID_FLAG(EA_RIP_METRIC) | EA_ID_FLAG(EA_RIP_TAG);
-
-    rte_update(&p->p, en->n.addr, e);
   }
   else
-  {
+    rte_withdraw(p->p.main_channel, en->n.addr, p->p.main_source);
-    /* Withdraw */
-    rte_update(&p->p, en->n.addr, NULL);
-  }
 }
 
 /**

proto/rpki/rpki.c

@@ -127,19 +127,16 @@ rpki_table_add_roa(struct rpki_cache *cache, struct channel *channel, const net_
     .dest = RTD_NONE,
   };
 
-  rta *a = rta_lookup(&a0);
+  rte e0 = { .attrs = rta_lookup(&a0) };
-  rte *e = rte_get_temp(a);
 
-  e->pflags = 0;
+  rte_update(channel, &pfxr->n, &e0);
-
-  rte_update2(channel, &pfxr->n, e, a0.src);
 }
 
 void
 rpki_table_remove_roa(struct rpki_cache *cache, struct channel *channel, const net_addr_union *pfxr)
 {
   struct rpki_proto *p = cache->p;
-  rte_update2(channel, &pfxr->n, NULL, p->p.main_source);
+  rte_withdraw(channel, &pfxr->n, p->p.main_source);
 }
 
 

proto/static/static.c

@@ -102,8 +102,7 @@ static_announce_rte(struct static_proto *p, struct static_route *r)
     return;
 
   /* We skip rta_lookup() here */
-  rte *e = rte_get_temp(a);
+  rte e0 = { .attrs = a }, *e = &e0;
-  e->pflags = 0;
 
   if (r->cmds)
   {
@@ -119,7 +118,7 @@ static_announce_rte(struct static_proto *p, struct static_route *r)
     e->net = NULL;
   }
 
-  rte_update2(p->p.main_channel, r->net, e, a->src);
+  rte_update(p->p.main_channel, r->net, e);
   r->state = SRS_CLEAN;
 
   if (r->cmds)
@@ -131,7 +130,7 @@ withdraw:
   if (r->state == SRS_DOWN)
     return;
 
-  rte_update2(p->p.main_channel, r->net, NULL, a->src);
+  rte_withdraw(p->p.main_channel, r->net, p->p.main_source);
   r->state = SRS_DOWN;
 }
 
@@ -297,7 +296,7 @@ static void
 static_remove_rte(struct static_proto *p, struct static_route *r)
 {
   if (r->state)
-    rte_update2(p->p.main_channel, r->net, NULL, static_get_source(p, r->index));
+    rte_withdraw(p->p.main_channel, r->net, static_get_source(p, r->index));
 
   static_reset_rte(p, r);
 }

sysdep/bsd/krt-sock.c

@@ -374,7 +374,6 @@ krt_read_route(struct ks_msg *msg, struct krt_proto *p, int scan)
   /* p is NULL iff KRT_SHARED_SOCKET and !scan */
 
   int ipv6;
-  rte *e;
   net *net;
   sockaddr dst, gate, mask;
   ip_addr idst, igate, imask;
@@ -495,7 +494,6 @@ krt_read_route(struct ks_msg *msg, struct krt_proto *p, int scan)
   net = net_get(p->p.main_channel->table, &ndst);
 
   rta a = {
-    .src = p->p.main_source,
     .source = RTS_INHERIT,
     .scope = SCOPE_UNIVERSE,
   };
@@ -549,14 +547,12 @@ krt_read_route(struct ks_msg *msg, struct krt_proto *p, int scan)
       }
   }
 
- done:
+ done:;
-  e = rte_get_temp(&a);
+  rte e0 = {}, *e = &e0;
+  e->attrs = &a;
   e->net = net;
   e->u.krt.src = src;
   e->u.krt.proto = src2;
-  e->u.krt.seen = 0;
-  e->u.krt.best = 0;
-  e->u.krt.metric = 0;
 
   if (scan)
     krt_got_route(p, e);

sysdep/linux/netlink.c

@@ -1488,12 +1488,11 @@ nl_mergable_route(struct nl_parse_state *s, net *net, struct krt_proto *p, uint
 static void
 nl_announce_route(struct nl_parse_state *s)
 {
-  rte *e = rte_get_temp(s->attrs);
+  rte e0 = {}, *e = &e0;
+  e->attrs = s->attrs;
   e->net = s->net;
   e->u.krt.src = s->krt_src;
   e->u.krt.proto = s->krt_proto;
-  e->u.krt.seen = 0;
-  e->u.krt.best = 0;
   e->u.krt.metric = s->krt_metric;
 
   if (s->scan)
@@ -1659,7 +1658,6 @@ nl_parse_route(struct nl_parse_state *s, struct nlmsghdr *h)
     nl_announce_route(s);
 
   rta *ra = lp_allocz(s->pool, RTA_MAX_SIZE);
-  ra->src = p->p.main_source;
   ra->source = RTS_INHERIT;
   ra->scope = SCOPE_UNIVERSE;
 

sysdep/unix/krt.c

@@ -298,18 +298,19 @@ krt_uptodate(rte *a, rte *b)
 static void
 krt_learn_announce_update(struct krt_proto *p, rte *e)
 {
-  net *n = e->net;
+  rte e0 = {
-  rta *aa = rta_clone(e->attrs);
+    .attrs = rta_clone(e->attrs),
-  rte *ee = rte_get_temp(aa);
+    .pflags = EA_ID_FLAG(EA_KRT_SOURCE) | EA_ID_FLAG(EA_KRT_METRIC),
-  ee->pflags = EA_ID_FLAG(EA_KRT_SOURCE) | EA_ID_FLAG(EA_KRT_METRIC);
+    .u.krt = e->u.krt,
-  ee->u.krt = e->u.krt;
+  };
-  rte_update(&p->p, n->n.addr, ee);
+
+  rte_update(p->p.main_channel, e->net->n.addr, &e0);
 }
 
 static void
-krt_learn_announce_delete(struct krt_proto *p, net *n)
+krt_learn_announce_delete(struct krt_proto *p, net_addr *n)
 {
-  rte_update(&p->p, n->n.addr, NULL);
+  rte_withdraw(p->p.main_channel, n, p->p.main_source);
 }
 
 /* Called when alien route is discovered during scan */
@@ -320,7 +321,7 @@ krt_learn_scan(struct krt_proto *p, rte *e)
   net *n = net_get(&p->krt_table, n0->n.addr);
   rte *m, **mm;
 
-  e->attrs = rta_lookup(e->attrs);
+  e = rte_store(e);
 
   for(mm=&n->routes; m = *mm; mm=&m->next)
     if (krt_same_key(m, e))
@@ -401,7 +402,7 @@ again:
 	{
 	  DBG("%I/%d: deleting\n", n->n.prefix, n->n.pxlen);
 	  if (old_best)
-	    krt_learn_announce_delete(p, n);
+	    krt_learn_announce_delete(p, n->n.addr);
 
 	  FIB_ITERATE_PUT(&fit);
 	  fib_delete(fib, n);
@@ -433,7 +434,7 @@ krt_learn_async(struct krt_proto *p, rte *e, int new)
   net *n = net_get(&p->krt_table, n0->n.addr);
   rte *g, **gg, *best, **bestp, *old_best;
 
-  e->attrs = rta_lookup(e->attrs);
+  e = rte_store(e);
 
   old_best = n->routes;
   for(gg=&n->routes; g = *gg; gg = &g->next)
@@ -499,7 +500,7 @@ krt_learn_async(struct krt_proto *p, rte *e, int new)
       if (best)
 	krt_learn_announce_update(p, best);
       else
-	krt_learn_announce_delete(p, n);
+	krt_learn_announce_delete(p, n->n.addr);
     }
 }
 
@@ -641,10 +642,7 @@ krt_got_route(struct krt_proto *p, rte *e)
       if (KRT_CF->learn)
 	krt_learn_scan(p, e);
       else
-	{
 	krt_trace_in_rl(&rl_alien, p, e, "[alien] ignored");
-	  rte_free(e);
-	}
       return;
     }
 #endif
@@ -700,8 +698,6 @@ delete:
   goto done;
 
 done:
-  rte_free(e);
-
   if (rt_free)
     rte_free(rt_free);
 
@@ -779,7 +775,6 @@ krt_got_route_async(struct krt_proto *p, rte *e, int new)
 	}
 #endif
     }
-  rte_free(e);
 }
 
 /*