From 48bf1322aa141ca6259b26b37551402758cff0cc Mon Sep 17 00:00:00 2001
From: Maria Matejka <mq@ucw.cz>
Date: Wed, 2 Mar 2022 10:35:21 +0100
Subject: Introducing an universal temporary linpool flushed after every task

---
 proto/bfd/io.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'proto/bfd')

diff --git a/proto/bfd/io.c b/proto/bfd/io.c
index 1cd9365a..e696cc89 100644
--- a/proto/bfd/io.c
+++ b/proto/bfd/io.c
@@ -482,6 +482,8 @@ birdloop_main(void *arg)
 
   birdloop_set_current(loop);
 
+  tmp_init(loop->pool);
+
   pthread_mutex_lock(&loop->mutex);
   while (1)
   {
-- 
cgit v1.2.3


From ebd807c0b8eb0b7a3dc3371cd4c87ae886c00885 Mon Sep 17 00:00:00 2001
From: Maria Matejka <mq@ucw.cz>
Date: Mon, 4 Apr 2022 20:31:14 +0200
Subject: Slab allocator can free the blocks without knowing the parent
 structure

---
 lib/resource.h        |   2 +-
 lib/slab.c            |  44 ++++++++------
 lib/slab_test.c       | 158 ++++++++++++++++++++++++--------------------------
 nest/neighbor.c       |   2 +-
 nest/rt-attr.c        |   6 +-
 nest/rt-fib.c         |   2 +-
 nest/rt-table.c       |   6 +-
 proto/babel/babel.c   |  12 ++--
 proto/babel/packets.c |   9 ++-
 proto/bfd/bfd.c       |   2 +-
 proto/bgp/attrs.c     |   2 +-
 proto/ospf/topology.c |   2 +-
 proto/rip/rip.c       |   4 +-
 13 files changed, 127 insertions(+), 124 deletions(-)

(limited to 'proto/bfd')

diff --git a/lib/resource.h b/lib/resource.h
index ed9e109d..8b180603 100644
--- a/lib/resource.h
+++ b/lib/resource.h
@@ -100,7 +100,7 @@ typedef struct slab slab;
 slab *sl_new(pool *, unsigned size);
 void *sl_alloc(slab *);
 void *sl_allocz(slab *);
-void sl_free(slab *, void *);
+void sl_free(void *);
 
 /*
  * Low-level memory allocation functions, please don't use
diff --git a/lib/slab.c b/lib/slab.c
index 9e0f7798..6da602f8 100644
--- a/lib/slab.c
+++ b/lib/slab.c
@@ -98,7 +98,7 @@ sl_allocz(slab *s)
 }
 
 void
-sl_free(slab *s, void *oo)
+sl_free(void *oo)
 {
   struct sl_obj *o = SKIP_BACK(struct sl_obj, data, oo);
 
@@ -170,6 +170,7 @@ static struct resclass sl_class = {
 };
 
 struct sl_head {
+  struct slab *slab;
   node n;
   u32 num_full;
   u32 used_bits[0];
@@ -236,7 +237,7 @@ sl_alloc(slab *s)
   struct sl_head *h;
 
 redo:
-  h = HEAD(s->partial_heads);
+  h = SKIP_BACK(struct sl_head, n, HEAD(s->partial_heads));
   if (!h->n.next)
     goto no_partial;
 okay:
@@ -262,7 +263,7 @@ okay:
   goto redo;
 
 no_partial:
-  h = HEAD(s->empty_heads);
+  h = SKIP_BACK(struct sl_head, n, HEAD(s->empty_heads));
   if (h->n.next)
     {
       rem_node(&h->n);
@@ -270,12 +271,16 @@ no_partial:
       s->num_empty_heads--;
       goto okay;
     }
+
   h = alloc_page();
+  ASSERT_DIE(SL_GET_HEAD(h) == h);
+
 #ifdef POISON
   memset(h, 0xba, page_size);
 #endif
-  ASSERT_DIE(SL_GET_HEAD(h) == h);
+
   memset(h, 0, s->head_size);
+  h->slab = s;
   add_head(&s->partial_heads, &h->n);
   goto okay;
 }
@@ -305,9 +310,10 @@ sl_allocz(slab *s)
  * and returns it back to the Slab @s.
  */
 void
-sl_free(slab *s, void *oo)
+sl_free(void *oo)
 {
   struct sl_head *h = SL_GET_HEAD(oo);
+  struct slab *s = h->slab;
 
 #ifdef POISON
   memset(oo, 0xdb, s->data_size);
@@ -347,13 +353,14 @@ static void
 slab_free(resource *r)
 {
   slab *s = (slab *) r;
-  struct sl_head *h, *g;
+  struct sl_head *h;
+  node *nn, *nxt;
 
-  WALK_LIST_DELSAFE(h, g, s->empty_heads)
+  WALK_LIST2_DELSAFE(h, nn, nxt, s->empty_heads, n)
     free_page(h);
-  WALK_LIST_DELSAFE(h, g, s->partial_heads)
+  WALK_LIST2_DELSAFE(h, nn, nxt, s->partial_heads, n)
     free_page(h);
-  WALK_LIST_DELSAFE(h, g, s->full_heads)
+  WALK_LIST2_DELSAFE(h, nn, nxt, s->full_heads, n)
     free_page(h);
 }
 
@@ -363,12 +370,13 @@ slab_dump(resource *r)
   slab *s = (slab *) r;
   int ec=0, pc=0, fc=0;
   struct sl_head *h;
+  node *nn;
 
-  WALK_LIST(h, s->empty_heads)
+  WALK_LIST2(h, nn, s->empty_heads, n)
     ec++;
-  WALK_LIST(h, s->partial_heads)
+  WALK_LIST2(h, nn, s->partial_heads, n)
     pc++;
-  WALK_LIST(h, s->full_heads)
+  WALK_LIST2(h, nn, s->full_heads, n)
     fc++;
   debug("(%de+%dp+%df blocks per %d objs per %d bytes)\n", ec, pc, fc, s->objs_per_slab, s->obj_size);
 }
@@ -379,19 +387,20 @@ slab_memsize(resource *r)
   slab *s = (slab *) r;
   size_t heads = 0;
   struct sl_head *h;
+  node *nn;
 
-  WALK_LIST(h, s->full_heads)
+  WALK_LIST2(h, nn, s->full_heads, n)
     heads++;
 
   size_t items = heads * s->objs_per_slab;
 
-  WALK_LIST(h, s->partial_heads)
+  WALK_LIST2(h, nn, s->partial_heads, n)
   {
     heads++;
     items += h->num_full;
   }
 
-  WALK_LIST(h, s->empty_heads)
+  WALK_LIST2(h, nn, s->empty_heads, n)
     heads++;
 
   size_t eff = items * s->data_size;
@@ -407,11 +416,12 @@ slab_lookup(resource *r, unsigned long a)
 {
   slab *s = (slab *) r;
   struct sl_head *h;
+  node *nn;
 
-  WALK_LIST(h, s->partial_heads)
+  WALK_LIST2(h, nn, s->partial_heads, n)
     if ((unsigned long) h < a && (unsigned long) h + page_size < a)
       return r;
-  WALK_LIST(h, s->full_heads)
+  WALK_LIST2(h, nn, s->full_heads, n)
     if ((unsigned long) h < a && (unsigned long) h + page_size < a)
       return r;
   return NULL;
diff --git a/lib/slab_test.c b/lib/slab_test.c
index e3ed0d58..803d0215 100644
--- a/lib/slab_test.c
+++ b/lib/slab_test.c
@@ -17,6 +17,25 @@ static const int sizes[] = {
 #define TEST_SIZE	1024 * 128
 #define ITEMS(sz)	TEST_SIZE / ( (sz) >> u32_log2((sz))/2 )
 
+struct test_request {
+  int size;
+  enum strategy {
+    TEST_NONE,
+    TEST_FORWARDS,
+    TEST_BACKWARDS,
+    TEST_RANDOM,
+    TEST_MIXED,
+    TEST__MAX,
+  } strategy;
+};
+
+const char * const strategy_name[TEST__MAX] = {
+  [TEST_FORWARDS] = "forwards",
+  [TEST_BACKWARDS] = "backwards",
+  [TEST_RANDOM] = "random",
+  [TEST_MIXED] = "mixed",
+};
+
 static inline byte *test_alloc(slab *s, int sz, struct resmem *sliz)
 {
   byte *out = sl_alloc(s);
@@ -42,7 +61,7 @@ static inline void test_free(slab *s, byte *block, int sz, struct resmem *sliz)
     block[p]++;
   }
 
-  sl_free(s, block);
+  sl_free(block);
 
   struct resmem ns = rmemsize((resource *) s);
 
@@ -60,118 +79,93 @@ static inline struct resmem get_memsize(slab *s)
 }
 
 static int
-t_slab_forwards(const void *data)
+t_slab(const void *data)
 {
-  int sz = (intptr_t) data;
-  slab *s = sl_new(&root_pool, sz);
-
-  struct resmem sliz = get_memsize(s);
-
-  int n = ITEMS(sz);
-  byte **block = mb_alloc(&root_pool, n * sizeof(*block));
-
-  for (int i = 0; i < n; i++)
-    block[i] = test_alloc(s, sz, &sliz);
-
-  for (int i = 0; i < n; i++)
-    test_free(s, block[i], sz, &sliz);
+  const struct test_request *tr = data;
+  int sz = tr->size;
 
-  mb_free(block);
-
-  return 1;
-}
-
-static int
-t_slab_backwards(const void *data)
-{
-  int sz = (intptr_t) data;
   slab *s = sl_new(&root_pool, sz);
-
   struct resmem sliz = get_memsize(s);
 
   int n = ITEMS(sz);
   byte **block = mb_alloc(&root_pool, n * sizeof(*block));
 
-  for (int i = 0; i < n; i++)
-    block[i] = test_alloc(s, sz, &sliz);
+  switch (tr->strategy) {
+    case TEST_FORWARDS:
+      for (int i = 0; i < n; i++)
+	block[i] = test_alloc(s, sz, &sliz);
 
-  for (int i = n - 1; i >= 0; i--)
-    test_free(s, block[i], sz, &sliz);
+      for (int i = 0; i < n; i++)
+	test_free(s, block[i], sz, &sliz);
 
-  mb_free(block);
+      break;
 
-  return 1;
-}
+    case TEST_BACKWARDS:
+      for (int i = 0; i < n; i++)
+	block[i] = test_alloc(s, sz, &sliz);
 
-static int
-t_slab_random(const void *data)
-{
-  int sz = (intptr_t) data;
-  slab *s = sl_new(&root_pool, sz);
+      for (int i = n - 1; i >= 0; i--)
+	test_free(s, block[i], sz, &sliz);
 
-  struct resmem sliz = get_memsize(s);
+      break;
 
-  int n = ITEMS(sz);
-  byte **block = mb_alloc(&root_pool, n * sizeof(*block));
+    case TEST_RANDOM:
+      for (int i = 0; i < n; i++)
+	block[i] = test_alloc(s, sz, &sliz);
 
-  for (int i = 0; i < n; i++)
-    block[i] = test_alloc(s, sz, &sliz);
+      for (int i = 0; i < n; i++)
+      {
+	int pos = bt_random() % (n - i);
+	test_free(s, block[pos], sz, &sliz);
+	if (pos != n - i - 1)
+	  block[pos] = block[n - i - 1];
+      }
 
-  for (int i = 0; i < n; i++)
-  {
-    int pos = bt_random() % (n - i);
-    test_free(s, block[pos], sz, &sliz);
-    if (pos != n - i - 1)
-      block[pos] = block[n - i - 1];
-  }
+      break;
 
-  mb_free(block);
+    case TEST_MIXED:
+      {
+	int cur = 0;
+	int pending = n;
 
-  return 1;
-}
+	while (cur + pending > 0) {
+	  int action = bt_random() % (cur + pending);
 
-static int
-t_slab_mixed(const void *data)
-{
-  int sz = (intptr_t) data;
-  slab *s = sl_new(&root_pool, sz);
-
-  struct resmem sliz = get_memsize(s);
-
-  int n = ITEMS(sz);
-  byte **block = mb_alloc(&root_pool, n * sizeof(*block));
+	  if (action < cur) {
+	    test_free(s, block[action], sz, &sliz);
+	    if (action != --cur)
+	      block[action] = block[cur];
+	  } else {
+	    block[cur++] = test_alloc(s, sz, &sliz);
+	    pending--;
+	  }
+	}
 
-  int cur = 0;
-  int pending = n;
+	break;
+      }
 
-  while (cur + pending > 0) {
-    int action = bt_random() % (cur + pending);
-
-    if (action < cur) {
-      test_free(s, block[action], sz, &sliz);
-      if (action != --cur)
-	block[action] = block[cur];
-    } else {
-      block[cur++] = test_alloc(s, sz, &sliz);
-      pending--;
-    }
+    default: bug("This shouldn't happen");
   }
 
   mb_free(block);
-
   return 1;
 }
 int main(int argc, char *argv[])
 {
   bt_init(argc, argv);
 
+  struct test_request tr;
+
   for (uint i = 0; i < sizeof(sizes) / sizeof(*sizes); i++)
-  {
-    bt_test_suite_arg(t_slab_forwards, (void *) (intptr_t) sizes[i], "Slab deallocation from beginning to end, size=%d", sizes[i]);
-    bt_test_suite_arg(t_slab_backwards, (void *) (intptr_t) sizes[i], "Slab deallocation from end to beginning, size=%d", sizes[i]);
-    bt_test_suite_arg(t_slab_random, (void *) (intptr_t) sizes[i], "Slab deallocation in random order, size=%d", sizes[i]);
-    bt_test_suite_arg(t_slab_mixed, (void *) (intptr_t) sizes[i], "Slab deallocation in mixed order, size=%d", sizes[i]);
-  }
+      for (uint strategy = TEST_FORWARDS; strategy < TEST__MAX; strategy++)
+      {
+	tr = (struct test_request) {
+	  .size = sizes[i],
+	  .strategy = strategy,
+	};
+	bt_test_suite_arg(t_slab, &tr, "Slab allocator test, size=%d, strategy=%s",
+	    tr.size, strategy_name[strategy]);
+      }
 
   return bt_exit_value();
 }
diff --git a/nest/neighbor.c b/nest/neighbor.c
index 1a31fb79..7cf9c85d 100644
--- a/nest/neighbor.c
+++ b/nest/neighbor.c
@@ -345,7 +345,7 @@ neigh_free(neighbor *n)
 {
   rem_node(&n->n);
   rem_node(&n->if_n);
-  sl_free(neigh_slab, n);
+  sl_free(n);
 }
 
 /**
diff --git a/nest/rt-attr.c b/nest/rt-attr.c
index 1bece201..863d411b 100644
--- a/nest/rt-attr.c
+++ b/nest/rt-attr.c
@@ -154,7 +154,7 @@ rt_prune_sources(void)
     {
       HASH_DO_REMOVE(src_hash, RSH, sp);
       idm_free(&src_ids, src->global_id);
-      sl_free(rte_src_slab, src);
+      sl_free(src);
     }
   }
   HASH_WALK_FILTER_END;
@@ -391,7 +391,7 @@ nexthop_free(struct nexthop *o)
   while (o)
     {
       n = o->next;
-      sl_free(nexthop_slab(o), o);
+      sl_free(o);
       o = n;
     }
 }
@@ -1231,7 +1231,7 @@ rta__free(rta *a)
     nexthop_free(a->nh.next);
   ea_free(a->eattrs);
   a->cached = 0;
-  sl_free(rta_slab(a), a);
+  sl_free(a);
 }
 
 rta *
diff --git a/nest/rt-fib.c b/nest/rt-fib.c
index 1690a8f6..43e3039d 100644
--- a/nest/rt-fib.c
+++ b/nest/rt-fib.c
@@ -475,7 +475,7 @@ fib_delete(struct fib *f, void *E)
 	    }
 
 	  if (f->fib_slab)
-	    sl_free(f->fib_slab, E);
+	    sl_free(E);
 	  else
 	    mb_free(E);
 
diff --git a/nest/rt-table.c b/nest/rt-table.c
index a1e49c21..1885e602 100644
--- a/nest/rt-table.c
+++ b/nest/rt-table.c
@@ -631,7 +631,7 @@ rte_free(rte *e)
   rt_unlock_source(e->src);
   if (rta_is_cached(e->attrs))
     rta_free(e->attrs);
-  sl_free(rte_slab, e);
+  sl_free(e);
 }
 
 static inline void
@@ -639,7 +639,7 @@ rte_free_quick(rte *e)
 {
   rt_unlock_source(e->src);
   rta_free(e->attrs);
-  sl_free(rte_slab, e);
+  sl_free(e);
 }
 
 static int				/* Actually better or at least as good as */
@@ -3393,7 +3393,7 @@ hc_delete_hostentry(struct hostcache *hc, pool *p, struct hostentry *he)
 
   rem_node(&he->ln);
   hc_remove(hc, he);
-  sl_free(hc->slab, he);
+  sl_free(he);
 
   hc->hash_items--;
   if (hc->hash_items < hc->hash_min)
diff --git a/proto/babel/babel.c b/proto/babel/babel.c
index 30809000..b3411fc2 100644
--- a/proto/babel/babel.c
+++ b/proto/babel/babel.c
@@ -119,7 +119,7 @@ babel_get_source(struct babel_proto *p, struct babel_entry *e, u64 router_id)
 }
 
 static void
-babel_expire_sources(struct babel_proto *p, struct babel_entry *e)
+babel_expire_sources(struct babel_proto *p UNUSED, struct babel_entry *e)
 {
   struct babel_source *n, *nx;
   btime now_ = current_time();
@@ -129,7 +129,7 @@ babel_expire_sources(struct babel_proto *p, struct babel_entry *e)
     if (n->expires && n->expires <= now_)
     {
       rem_node(NODE n);
-      sl_free(p->source_slab, n);
+      sl_free(n);
     }
   }
 }
@@ -174,7 +174,7 @@ babel_retract_route(struct babel_proto *p, struct babel_route *r)
 }
 
 static void
-babel_flush_route(struct babel_proto *p, struct babel_route *r)
+babel_flush_route(struct babel_proto *p UNUSED, struct babel_route *r)
 {
   DBG("Babel: Flush route %N router_id %lR neigh %I\n",
       r->e->n.addr, r->router_id, r->neigh->addr);
@@ -185,7 +185,7 @@ babel_flush_route(struct babel_proto *p, struct babel_route *r)
   if (r->e->selected == r)
     r->e->selected = NULL;
 
-  sl_free(p->route_slab, r);
+  sl_free(r);
 }
 
 static void
@@ -336,13 +336,13 @@ found:
 }
 
 static void
-babel_remove_seqno_request(struct babel_proto *p, struct babel_seqno_request *sr)
+babel_remove_seqno_request(struct babel_proto *p UNUSED, struct babel_seqno_request *sr)
 {
   if (sr->nbr)
     rem_node(&sr->nbr_node);
 
   rem_node(NODE sr);
-  sl_free(p->seqno_slab, sr);
+  sl_free(sr);
 }
 
 static int
diff --git a/proto/babel/packets.c b/proto/babel/packets.c
index f13410e2..2a6d443d 100644
--- a/proto/babel/packets.c
+++ b/proto/babel/packets.c
@@ -1318,7 +1318,6 @@ babel_send_to(struct babel_iface *ifa, ip_addr dest)
 static uint
 babel_write_queue(struct babel_iface *ifa, list *queue)
 {
-  struct babel_proto *p = ifa->proto;
   struct babel_write_state state = { .next_hop_ip6 = ifa->addr };
 
   if (EMPTY_LIST(*queue))
@@ -1346,7 +1345,7 @@ babel_write_queue(struct babel_iface *ifa, list *queue)
 
     pos += len;
     rem_node(NODE msg);
-    sl_free(p->msg_slab, msg);
+    sl_free(msg);
   }
 
   pos += babel_auth_add_tlvs(ifa, (struct babel_tlv *) pos, end - pos);
@@ -1507,13 +1506,13 @@ babel_process_packet(struct babel_iface *ifa,
     else if (res == PARSE_IGNORE)
     {
       DBG("Babel: Ignoring TLV of type %d\n", tlv->type);
-      sl_free(p->msg_slab, msg);
+      sl_free(msg);
     }
     else /* PARSE_ERROR */
     {
       LOG_PKT("Bad TLV from %I via %s type %d pos %d - parse error",
 	      saddr, ifa->iface->name, tlv->type, (int) ((byte *)tlv - (byte *)pkt));
-      sl_free(p->msg_slab, msg);
+      sl_free(msg);
       break;
     }
   }
@@ -1525,7 +1524,7 @@ babel_process_packet(struct babel_iface *ifa,
     if (tlv_data[msg->msg.type].handle_tlv)
       tlv_data[msg->msg.type].handle_tlv(&msg->msg, ifa);
     rem_node(NODE msg);
-    sl_free(p->msg_slab, msg);
+    sl_free(msg);
   }
 }
 
diff --git a/proto/bfd/bfd.c b/proto/bfd/bfd.c
index dac184c5..277f38bf 100644
--- a/proto/bfd/bfd.c
+++ b/proto/bfd/bfd.c
@@ -508,7 +508,7 @@ bfd_remove_session(struct bfd_proto *p, struct bfd_session *s)
   HASH_REMOVE(p->session_hash_id, HASH_ID, s);
   HASH_REMOVE(p->session_hash_ip, HASH_IP, s);
 
-  sl_free(p->session_slab, s);
+  sl_free(s);
 
   TRACE(D_EVENTS, "Session to %I removed", ip);
 
diff --git a/proto/bgp/attrs.c b/proto/bgp/attrs.c
index 65e87c96..76b99c41 100644
--- a/proto/bgp/attrs.c
+++ b/proto/bgp/attrs.c
@@ -1664,7 +1664,7 @@ bgp_free_prefix(struct bgp_channel *c, struct bgp_prefix *px)
   HASH_REMOVE2(c->prefix_hash, PXH, c->pool, px);
 
   if (c->prefix_slab)
-    sl_free(c->prefix_slab, px);
+    sl_free(px);
   else
     mb_free(px);
 }
diff --git a/proto/ospf/topology.c b/proto/ospf/topology.c
index 52c2a0ce..9fe68264 100644
--- a/proto/ospf/topology.c
+++ b/proto/ospf/topology.c
@@ -2135,7 +2135,7 @@ ospf_hash_delete(struct top_graph *f, struct top_hash_entry *e)
     if (*ee == e)
     {
       *ee = e->next;
-      sl_free(f->hash_slab, e);
+      sl_free(e);
       if (f->hash_entries-- < f->hash_entries_min)
 	ospf_top_rehash(f, -HASH_LO_STEP);
       return;
diff --git a/proto/rip/rip.c b/proto/rip/rip.c
index a501a784..eb232316 100644
--- a/proto/rip/rip.c
+++ b/proto/rip/rip.c
@@ -108,14 +108,14 @@ rip_add_rte(struct rip_proto *p, struct rip_rte **rp, struct rip_rte *src)
 }
 
 static inline void
-rip_remove_rte(struct rip_proto *p, struct rip_rte **rp)
+rip_remove_rte(struct rip_proto *p UNUSED, struct rip_rte **rp)
 {
   struct rip_rte *rt = *rp;
 
   rip_unlock_neighbor(rt->from);
 
   *rp = rt->next;
-  sl_free(p->rte_slab, rt);
+  sl_free(rt);
 }
 
 static inline int rip_same_rte(struct rip_rte *a, struct rip_rte *b)
-- 
cgit v1.2.3


From 4a23ede2b056a41456790cc20a0c3d92a7137693 Mon Sep 17 00:00:00 2001
From: Maria Matejka <mq@ucw.cz>
Date: Fri, 18 Mar 2022 22:05:50 +0100
Subject: Protocols have their own explicit init routines

---
 Makefile.in           | 10 ++++++++++
 nest/Makefile         |  7 ++++++-
 nest/proto.c          | 45 +++++----------------------------------------
 nest/protocol.h       |  4 ++--
 nest/rt-dev.c         |  6 ++++++
 proto/babel/Makefile  |  1 +
 proto/babel/babel.c   |  6 ++++++
 proto/bfd/Makefile    |  3 ++-
 proto/bfd/bfd.c       | 17 ++++++++---------
 proto/bgp/Makefile    |  3 ++-
 proto/bgp/bgp.c       |  5 +++++
 proto/mrt/Makefile    |  3 ++-
 proto/mrt/mrt.c       |  6 ++++++
 proto/ospf/Makefile   |  3 ++-
 proto/ospf/ospf.c     |  6 ++++++
 proto/perf/Makefile   |  1 +
 proto/perf/perf.c     |  6 ++++++
 proto/pipe/Makefile   |  3 ++-
 proto/pipe/pipe.c     |  6 ++++++
 proto/radv/Makefile   |  3 ++-
 proto/radv/radv.c     |  6 ++++++
 proto/rip/Makefile    |  3 ++-
 proto/rip/rip.c       |  6 ++++++
 proto/rpki/Makefile   |  3 ++-
 proto/rpki/rpki.c     |  6 ++++++
 proto/static/Makefile |  3 ++-
 proto/static/static.c |  6 ++++++
 sysdep/unix/Makefile  |  2 ++
 sysdep/unix/krt.c     | 13 +++++++++++++
 sysdep/unix/main.c    |  2 --
 test/bt-utils.c       |  2 --
 31 files changed, 131 insertions(+), 65 deletions(-)

(limited to 'proto/bfd')

diff --git a/Makefile.in b/Makefile.in
index e0ff4a1d..0d55807b 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -82,6 +82,9 @@ conf-lex-targets := $(addprefix $(objdir)/conf/,cf-lex.o)
 conf-y-targets := $(addprefix $(objdir)/conf/,cf-parse.y keywords.h commands.h)
 cf-local = $(conf-y-targets): $(s)config.Y
 
+# nest/Makefile declarations needed for all other modules
+proto-build-c := $(addprefix $(objdir)/nest/,proto-build.c)
+
 src-o-files = $(patsubst %.c,$(o)%.o,$(src))
 tests-target-files = $(patsubst %.c,$(o)%,$(tests_src))
 
@@ -95,6 +98,13 @@ else
   o = $(patsubst $(srcdir)%,$(objdir)%,$(s))
 endif
 
+define proto-build_in =
+PROTO_BUILD += $(1)
+$(proto-build-c): $(lastword $(MAKEFILE_LIST))
+endef
+
+proto-build = $(eval $(call proto-build_in,$(1)))
+
 define clean_in =
 clean::
 	rm -f $(addprefix $(o),$(1))
diff --git a/nest/Makefile b/nest/Makefile
index 884d3950..7d451ba4 100644
--- a/nest/Makefile
+++ b/nest/Makefile
@@ -1,7 +1,12 @@
-src := a-path.c a-set.c cli.c cmds.c iface.c locks.c neighbor.c password.c proto.c rt-attr.c rt-dev.c rt-fib.c rt-show.c rt-table.c
+src := a-path.c a-set.c cli.c cmds.c iface.c locks.c neighbor.c password.c proto.c proto-build.c rt-attr.c rt-dev.c rt-fib.c rt-show.c rt-table.c
 obj := $(src-o-files)
 $(all-daemon)
 $(cf-local)
+$(call proto-build,dev_build)
+
+$(proto-build-c): $(lastword $(MAKEFILE_LIST))
+	$(E)echo GEN $@
+	$(Q)echo "$(patsubst %,void %(void); ,$(PROTO_BUILD)) void protos_build_gen(void) { $(patsubst %,  %(); ,$(PROTO_BUILD))}" > $@
 
 tests_src := a-set_test.c a-path_test.c
 tests_targets := $(tests_targets) $(tests-target-files)
diff --git a/nest/proto.c b/nest/proto.c
index 7cfb1555..7074f73a 100644
--- a/nest/proto.c
+++ b/nest/proto.c
@@ -23,9 +23,9 @@
 #include "filter/f-inst.h"
 
 pool *proto_pool;
-list  proto_list;
+list STATIC_LIST_INIT(proto_list);
 
-static list protocol_list;
+static list STATIC_LIST_INIT(protocol_list);
 struct protocol *class_to_protocol[PROTOCOL__MAX];
 
 #define CD(c, msg, args...) ({ if (c->debug & D_STATES) log(L_TRACE "%s.%s: " msg, c->proto->name, c->name ?: "?", ## args); })
@@ -1651,6 +1651,8 @@ proto_build(struct protocol *p)
 /* FIXME: convert this call to some protocol hook */
 extern void bfd_init_all(void);
 
+void protos_build_gen(void);
+
 /**
  * protos_build - build a protocol list
  *
@@ -1663,44 +1665,7 @@ extern void bfd_init_all(void);
 void
 protos_build(void)
 {
-  init_list(&proto_list);
-  init_list(&protocol_list);
-
-  proto_build(&proto_device);
-#ifdef CONFIG_RADV
-  proto_build(&proto_radv);
-#endif
-#ifdef CONFIG_RIP
-  proto_build(&proto_rip);
-#endif
-#ifdef CONFIG_STATIC
-  proto_build(&proto_static);
-#endif
-#ifdef CONFIG_MRT
-  proto_build(&proto_mrt);
-#endif
-#ifdef CONFIG_OSPF
-  proto_build(&proto_ospf);
-#endif
-#ifdef CONFIG_PIPE
-  proto_build(&proto_pipe);
-#endif
-#ifdef CONFIG_BGP
-  proto_build(&proto_bgp);
-#endif
-#ifdef CONFIG_BFD
-  proto_build(&proto_bfd);
-  bfd_init_all();
-#endif
-#ifdef CONFIG_BABEL
-  proto_build(&proto_babel);
-#endif
-#ifdef CONFIG_RPKI
-  proto_build(&proto_rpki);
-#endif
-#ifdef CONFIG_PERF
-  proto_build(&proto_perf);
-#endif
+  protos_build_gen();
 
   proto_pool = rp_new(&root_pool, "Protocols");
   proto_shutdown_timer = tm_new(proto_pool);
diff --git a/nest/protocol.h b/nest/protocol.h
index e05dd7ec..d0810a8f 100644
--- a/nest/protocol.h
+++ b/nest/protocol.h
@@ -84,8 +84,8 @@ struct protocol {
   void (*copy_config)(struct proto_config *, struct proto_config *);	/* Copy config from given protocol instance */
 };
 
-void protos_build(void);
-void proto_build(struct protocol *);
+void protos_build(void);		/* Called from sysdep to initialize protocols */
+void proto_build(struct protocol *);	/* Called from protocol to register itself */
 void protos_preconfig(struct config *);
 void protos_commit(struct config *new, struct config *old, int force_restart, int type);
 struct proto * proto_spawn(struct proto_config *cf, uint disabled);
diff --git a/nest/rt-dev.c b/nest/rt-dev.c
index e2e65926..05e64fc3 100644
--- a/nest/rt-dev.c
+++ b/nest/rt-dev.c
@@ -195,3 +195,9 @@ struct protocol proto_device = {
   .reconfigure =	dev_reconfigure,
   .copy_config =	dev_copy_config
 };
+
+void
+dev_build(void)
+{
+  proto_build(&proto_device);
+}
diff --git a/proto/babel/Makefile b/proto/babel/Makefile
index 06b58e95..ae6aeaf2 100644
--- a/proto/babel/Makefile
+++ b/proto/babel/Makefile
@@ -2,5 +2,6 @@ src := babel.c packets.c
 obj := $(src-o-files)
 $(all-daemon)
 $(cf-local)
+$(call proto-build,babel_build)
 
 tests_objs := $(tests_objs) $(src-o-files)
diff --git a/proto/babel/babel.c b/proto/babel/babel.c
index b3411fc2..8040345f 100644
--- a/proto/babel/babel.c
+++ b/proto/babel/babel.c
@@ -2494,3 +2494,9 @@ struct protocol proto_babel = {
   .get_route_info =	babel_get_route_info,
   .get_attr =		babel_get_attr
 };
+
+void
+babel_build(void)
+{
+  proto_build(&proto_babel);
+}
diff --git a/proto/bfd/Makefile b/proto/bfd/Makefile
index 402122fc..dbdc0a09 100644
--- a/proto/bfd/Makefile
+++ b/proto/bfd/Makefile
@@ -2,5 +2,6 @@ src := bfd.c io.c packets.c
 obj := $(src-o-files)
 $(all-daemon)
 $(cf-local)
+$(call proto-build,bfd_build)
 
-tests_objs := $(tests_objs) $(src-o-files)
\ No newline at end of file
+tests_objs := $(tests_objs) $(src-o-files)
diff --git a/proto/bfd/bfd.c b/proto/bfd/bfd.c
index 277f38bf..d1e97cd5 100644
--- a/proto/bfd/bfd.c
+++ b/proto/bfd/bfd.c
@@ -113,8 +113,8 @@
 #define HASH_IP_EQ(a1,n1,a2,n2)	ipa_equal(a1, a2) && n1 == n2
 #define HASH_IP_FN(a,n)		ipa_hash(a) ^ u32_hash(n)
 
-static list bfd_proto_list;
-static list bfd_wait_list;
+static list STATIC_LIST_INIT(bfd_proto_list);
+static list STATIC_LIST_INIT(bfd_wait_list);
 
 const char *bfd_state_names[] = { "AdminDown", "Down", "Init", "Up" };
 
@@ -998,13 +998,6 @@ bfd_notify_init(struct bfd_proto *p)
  *	BFD protocol glue
  */
 
-void
-bfd_init_all(void)
-{
-  init_list(&bfd_proto_list);
-  init_list(&bfd_wait_list);
-}
-
 static struct proto *
 bfd_init(struct proto_config *c)
 {
@@ -1186,3 +1179,9 @@ struct protocol proto_bfd = {
   .reconfigure =	bfd_reconfigure,
   .copy_config =	bfd_copy_config,
 };
+
+void
+bfd_build(void)
+{
+  proto_build(&proto_bfd);
+}
diff --git a/proto/bgp/Makefile b/proto/bgp/Makefile
index 00aaef5e..2a4cc99c 100644
--- a/proto/bgp/Makefile
+++ b/proto/bgp/Makefile
@@ -2,5 +2,6 @@ src := attrs.c bgp.c packets.c
 obj := $(src-o-files)
 $(all-daemon)
 $(cf-local)
+$(call proto-build,bgp_build)
 
-tests_objs := $(tests_objs) $(src-o-files)
\ No newline at end of file
+tests_objs := $(tests_objs) $(src-o-files)
diff --git a/proto/bgp/bgp.c b/proto/bgp/bgp.c
index 52400762..8c97f7b3 100644
--- a/proto/bgp/bgp.c
+++ b/proto/bgp/bgp.c
@@ -2592,3 +2592,8 @@ struct protocol proto_bgp = {
   .get_route_info = 	bgp_get_route_info,
   .show_proto_info = 	bgp_show_proto_info
 };
+
+void bgp_build(void)
+{
+  proto_build(&proto_bgp);
+}
diff --git a/proto/mrt/Makefile b/proto/mrt/Makefile
index 925fb102..000e1c1c 100644
--- a/proto/mrt/Makefile
+++ b/proto/mrt/Makefile
@@ -2,5 +2,6 @@ src := mrt.c
 obj := $(src-o-files)
 $(all-daemon)
 $(cf-local)
+$(call proto-build,mrt_build)
 
-tests_objs := $(tests_objs) $(src-o-files)
\ No newline at end of file
+tests_objs := $(tests_objs) $(src-o-files)
diff --git a/proto/mrt/mrt.c b/proto/mrt/mrt.c
index e885611a..70b2aeff 100644
--- a/proto/mrt/mrt.c
+++ b/proto/mrt/mrt.c
@@ -916,3 +916,9 @@ struct protocol proto_mrt = {
   .reconfigure =	mrt_reconfigure,
   .copy_config =	mrt_copy_config,
 };
+
+void
+mrt_build(void)
+{
+  proto_build(&proto_mrt);
+}
diff --git a/proto/ospf/Makefile b/proto/ospf/Makefile
index 39e74f71..85664543 100644
--- a/proto/ospf/Makefile
+++ b/proto/ospf/Makefile
@@ -2,5 +2,6 @@ src := dbdes.c hello.c iface.c lsack.c lsalib.c lsreq.c lsupd.c neighbor.c ospf.
 obj := $(src-o-files)
 $(all-daemon)
 $(cf-local)
+$(call proto-build,ospf_build)
 
-tests_objs := $(tests_objs) $(src-o-files)
\ No newline at end of file
+tests_objs := $(tests_objs) $(src-o-files)
diff --git a/proto/ospf/ospf.c b/proto/ospf/ospf.c
index f9aa6cd1..4ea53942 100644
--- a/proto/ospf/ospf.c
+++ b/proto/ospf/ospf.c
@@ -1534,3 +1534,9 @@ struct protocol proto_ospf = {
   .get_attr =		ospf_get_attr,
   .get_route_info =	ospf_get_route_info
 };
+
+void
+ospf_build(void)
+{
+  proto_build(&proto_ospf);
+}
diff --git a/proto/perf/Makefile b/proto/perf/Makefile
index 7877fb19..42051f43 100644
--- a/proto/perf/Makefile
+++ b/proto/perf/Makefile
@@ -2,5 +2,6 @@ src := perf.c
 obj := $(src-o-files)
 $(all-daemon)
 $(cf-local)
+$(call proto-build,perf_build)
 
 tests_objs := $(tests_objs) $(src-o-files)
diff --git a/proto/perf/perf.c b/proto/perf/perf.c
index 52784c14..5d228045 100644
--- a/proto/perf/perf.c
+++ b/proto/perf/perf.c
@@ -315,3 +315,9 @@ struct protocol proto_perf = {
   .reconfigure = 	perf_reconfigure,
   .copy_config =	perf_copy_config,
 };
+
+void
+perf_build(void)
+{
+  proto_build(&proto_perf);
+}
diff --git a/proto/pipe/Makefile b/proto/pipe/Makefile
index 5093da98..ba66027f 100644
--- a/proto/pipe/Makefile
+++ b/proto/pipe/Makefile
@@ -2,5 +2,6 @@ src := pipe.c
 obj := $(src-o-files)
 $(all-daemon)
 $(cf-local)
+$(call proto-build,pipe_build)
 
-tests_objs := $(tests_objs) $(src-o-files)
\ No newline at end of file
+tests_objs := $(tests_objs) $(src-o-files)
diff --git a/proto/pipe/pipe.c b/proto/pipe/pipe.c
index 97862780..c3457135 100644
--- a/proto/pipe/pipe.c
+++ b/proto/pipe/pipe.c
@@ -303,3 +303,9 @@ struct protocol proto_pipe = {
   .get_status = 	pipe_get_status,
   .show_proto_info = 	pipe_show_proto_info
 };
+
+void
+pipe_build(void)
+{
+  proto_build(&proto_pipe);
+}
diff --git a/proto/radv/Makefile b/proto/radv/Makefile
index 05317eff..4780bee3 100644
--- a/proto/radv/Makefile
+++ b/proto/radv/Makefile
@@ -2,5 +2,6 @@ src := packets.c radv.c
 obj := $(src-o-files)
 $(all-daemon)
 $(cf-local)
+$(call proto-build,radv_build)
 
-tests_objs := $(tests_objs) $(src-o-files)
\ No newline at end of file
+tests_objs := $(tests_objs) $(src-o-files)
diff --git a/proto/radv/radv.c b/proto/radv/radv.c
index 540ff2a7..7985997a 100644
--- a/proto/radv/radv.c
+++ b/proto/radv/radv.c
@@ -771,3 +771,9 @@ struct protocol proto_radv = {
   .get_status =		radv_get_status,
   .get_attr =		radv_get_attr
 };
+
+void
+radv_build(void)
+{
+  proto_build(&proto_radv);
+}
diff --git a/proto/rip/Makefile b/proto/rip/Makefile
index 7feabcd8..b9ff62d6 100644
--- a/proto/rip/Makefile
+++ b/proto/rip/Makefile
@@ -2,5 +2,6 @@ src := packets.c rip.c
 obj := $(src-o-files)
 $(all-daemon)
 $(cf-local)
+$(call proto-build,rip_build)
 
-tests_objs := $(tests_objs) $(src-o-files)
\ No newline at end of file
+tests_objs := $(tests_objs) $(src-o-files)
diff --git a/proto/rip/rip.c b/proto/rip/rip.c
index eb232316..9d8b9849 100644
--- a/proto/rip/rip.c
+++ b/proto/rip/rip.c
@@ -1342,3 +1342,9 @@ struct protocol proto_rip = {
   .get_route_info =	rip_get_route_info,
   .get_attr =		rip_get_attr
 };
+
+void
+rip_build(void)
+{
+  proto_build(&proto_rip);
+}
diff --git a/proto/rpki/Makefile b/proto/rpki/Makefile
index eb09b7df..8e3a2761 100644
--- a/proto/rpki/Makefile
+++ b/proto/rpki/Makefile
@@ -2,5 +2,6 @@ src := rpki.c packets.c tcp_transport.c ssh_transport.c transport.c
 obj := $(src-o-files)
 $(all-daemon)
 $(cf-local)
+$(call proto-build,rpki_build)
 
-tests_objs := $(tests_objs) $(src-o-files)
\ No newline at end of file
+tests_objs := $(tests_objs) $(src-o-files)
diff --git a/proto/rpki/rpki.c b/proto/rpki/rpki.c
index be3d19ab..6e111a81 100644
--- a/proto/rpki/rpki.c
+++ b/proto/rpki/rpki.c
@@ -949,3 +949,9 @@ struct protocol proto_rpki = {
   .reconfigure = 	rpki_reconfigure,
   .get_status = 	rpki_get_status,
 };
+
+void
+rpki_build(void)
+{
+  proto_build(&proto_rpki);
+}
diff --git a/proto/static/Makefile b/proto/static/Makefile
index e38f9b74..26aed31f 100644
--- a/proto/static/Makefile
+++ b/proto/static/Makefile
@@ -2,5 +2,6 @@ src := static.c
 obj := $(src-o-files)
 $(all-daemon)
 $(cf-local)
+$(call proto-build,static_build)
 
-tests_objs := $(tests_objs) $(src-o-files)
\ No newline at end of file
+tests_objs := $(tests_objs) $(src-o-files)
diff --git a/proto/static/static.c b/proto/static/static.c
index 6d3871cc..cf2e4585 100644
--- a/proto/static/static.c
+++ b/proto/static/static.c
@@ -793,3 +793,9 @@ struct protocol proto_static = {
   .copy_config =	static_copy_config,
   .get_route_info =	static_get_route_info,
 };
+
+void
+static_build(void)
+{
+  proto_build(&proto_static);
+}
diff --git a/sysdep/unix/Makefile b/sysdep/unix/Makefile
index d0d36b5f..51ab98a9 100644
--- a/sysdep/unix/Makefile
+++ b/sysdep/unix/Makefile
@@ -2,6 +2,8 @@ src := alloc.c io.c krt.c log.c main.c random.c
 obj := $(src-o-files)
 $(all-daemon)
 $(cf-local)
+$(call proto-build,kif_build)
+$(call proto-build,krt_build)
 $(conf-y-targets): $(s)krt.Y
 
 src := $(filter-out main.c, $(src))
diff --git a/sysdep/unix/krt.c b/sysdep/unix/krt.c
index 7d7ec7e6..bfd69b73 100644
--- a/sysdep/unix/krt.c
+++ b/sysdep/unix/krt.c
@@ -243,6 +243,13 @@ struct protocol proto_unix_iface = {
   .copy_config =	kif_copy_config
 };
 
+void
+kif_build(void)
+{
+  proto_build(&proto_unix_iface);
+}
+
+
 /*
  *	Tracing of routes
  */
@@ -1177,3 +1184,9 @@ struct protocol proto_unix_kernel = {
   .dump =		krt_dump,
 #endif
 };
+
+void
+krt_build(void)
+{
+  proto_build(&proto_unix_kernel);
+}
diff --git a/sysdep/unix/main.c b/sysdep/unix/main.c
index cdf0a310..71749324 100644
--- a/sysdep/unix/main.c
+++ b/sysdep/unix/main.c
@@ -906,8 +906,6 @@ main(int argc, char **argv)
     open_pid_file();
 
   protos_build();
-  proto_build(&proto_unix_kernel);
-  proto_build(&proto_unix_iface);
 
   struct config *conf = read_config();
 
diff --git a/test/bt-utils.c b/test/bt-utils.c
index 2a7799c3..8496e185 100644
--- a/test/bt-utils.c
+++ b/test/bt-utils.c
@@ -68,8 +68,6 @@ bt_bird_init(void)
   config_init();
 
   protos_build();
-  proto_build(&proto_unix_kernel);
-  proto_build(&proto_unix_iface);
 }
 
 void bt_bird_cleanup(void)
-- 
cgit v1.2.3


From 692055e3df6cc9f0d428d3b0dd8cdd8e825eb6f4 Mon Sep 17 00:00:00 2001
From: "Ondrej Zajicek (work)" <santiago@crfreenet.org>
Date: Thu, 7 Apr 2022 19:33:40 +0200
Subject: BFD: Add 'strict bind' option

Add BFD protocol option 'strict bind' to use separate listening socket
for each BFD interface bound to its address instead of using shared
listening sockets.
---
 doc/bird.sgml       |  7 +++++++
 proto/bfd/bfd.c     | 31 ++++++++++++++++++++++---------
 proto/bfd/bfd.h     |  3 +++
 proto/bfd/config.Y  |  4 +++-
 proto/bfd/packets.c | 36 +++++++++++++++++++++++++++++++++++-
 5 files changed, 70 insertions(+), 11 deletions(-)

(limited to 'proto/bfd')

diff --git a/doc/bird.sgml b/doc/bird.sgml
index 1d5ae056..9c4a6f68 100644
--- a/doc/bird.sgml
+++ b/doc/bird.sgml
@@ -2153,6 +2153,13 @@ protocol bfd [&lt;name&gt;] {
 	to configure separate BFD protocol instances for IPv4 and for IPv6
 	sessions.
 
+	<tag><label id="bfd-strict-bind">strict bind <m/switch/</tag>
+	Specify whether each BFD interface should use a separate listening
+	socket bound to its local address, or just use a shared listening socket
+	accepting all addresses. Binding to a specific address could be useful
+	in cases like running multiple BIRD instances on a machine, each
+	handling a different set of interfaces. Default: disabled.
+
 	<tag><label id="bfd-iface">interface <m/pattern/ [, <m/.../] { <m/options/ }</tag>
 	Interface definitions allow to specify options for sessions associated
 	with such interfaces and also may contain interface specific options.
diff --git a/proto/bfd/bfd.c b/proto/bfd/bfd.c
index dac184c5..cc941695 100644
--- a/proto/bfd/bfd.c
+++ b/proto/bfd/bfd.c
@@ -582,6 +582,9 @@ bfd_get_iface(struct bfd_proto *p, ip_addr local, struct iface *iface)
   ifa->sk = bfd_open_tx_sk(p, local, iface);
   ifa->uc = 1;
 
+  if (cf->strict_bind)
+    ifa->rx = bfd_open_rx_sk_bound(p, local, iface);
+
   add_tail(&p->iface_list, &ifa->n);
 
   return ifa;
@@ -599,6 +602,12 @@ bfd_free_iface(struct bfd_iface *ifa)
     rfree(ifa->sk);
   }
 
+  if (ifa->rx)
+  {
+    sk_stop(ifa->rx);
+    rfree(ifa->rx);
+  }
+
   rem_node(&ifa->n);
   mb_free(ifa);
 }
@@ -1038,17 +1047,20 @@ bfd_start(struct proto *P)
 
   birdloop_enter(p->loop);
 
-  if (cf->accept_ipv4 && cf->accept_direct)
-    p->rx4_1 = bfd_open_rx_sk(p, 0, SK_IPV4);
+  if (!cf->strict_bind)
+  {
+    if (cf->accept_ipv4 && cf->accept_direct)
+      p->rx4_1 = bfd_open_rx_sk(p, 0, SK_IPV4);
 
-  if (cf->accept_ipv4 && cf->accept_multihop)
-    p->rx4_m = bfd_open_rx_sk(p, 1, SK_IPV4);
+    if (cf->accept_ipv4 && cf->accept_multihop)
+      p->rx4_m = bfd_open_rx_sk(p, 1, SK_IPV4);
 
-  if (cf->accept_ipv6 && cf->accept_direct)
-    p->rx6_1 = bfd_open_rx_sk(p, 0, SK_IPV6);
+    if (cf->accept_ipv6 && cf->accept_direct)
+      p->rx6_1 = bfd_open_rx_sk(p, 0, SK_IPV6);
 
-  if (cf->accept_ipv6 && cf->accept_multihop)
-    p->rx6_m = bfd_open_rx_sk(p, 1, SK_IPV6);
+    if (cf->accept_ipv6 && cf->accept_multihop)
+      p->rx6_m = bfd_open_rx_sk(p, 1, SK_IPV6);
+  }
 
   birdloop_leave(p->loop);
 
@@ -1102,7 +1114,8 @@ bfd_reconfigure(struct proto *P, struct proto_config *c)
   if ((new->accept_ipv4 != old->accept_ipv4) ||
       (new->accept_ipv6 != old->accept_ipv6) ||
       (new->accept_direct != old->accept_direct) ||
-      (new->accept_multihop != old->accept_multihop))
+      (new->accept_multihop != old->accept_multihop) ||
+      (new->strict_bind != old->strict_bind))
     return 0;
 
   birdloop_mask_wakeups(p->loop);
diff --git a/proto/bfd/bfd.h b/proto/bfd/bfd.h
index 91fdaa60..7caf9f66 100644
--- a/proto/bfd/bfd.h
+++ b/proto/bfd/bfd.h
@@ -47,6 +47,7 @@ struct bfd_config
   u8 accept_ipv6;
   u8 accept_direct;
   u8 accept_multihop;
+  u8 strict_bind;
 };
 
 struct bfd_iface_config
@@ -116,6 +117,7 @@ struct bfd_iface
   struct bfd_proto *bfd;
 
   sock *sk;
+  sock *rx;
   u32 uc;
   u8 changed;
 };
@@ -221,6 +223,7 @@ void bfd_show_sessions(struct proto *P);
 /* packets.c */
 void bfd_send_ctl(struct bfd_proto *p, struct bfd_session *s, int final);
 sock * bfd_open_rx_sk(struct bfd_proto *p, int multihop, int inet_version);
+sock * bfd_open_rx_sk_bound(struct bfd_proto *p, ip_addr local, struct iface *ifa);
 sock * bfd_open_tx_sk(struct bfd_proto *p, ip_addr local, struct iface *ifa);
 
 
diff --git a/proto/bfd/config.Y b/proto/bfd/config.Y
index df1cba42..70461872 100644
--- a/proto/bfd/config.Y
+++ b/proto/bfd/config.Y
@@ -23,7 +23,8 @@ CF_DECLS
 
 CF_KEYWORDS(BFD, MIN, IDLE, RX, TX, INTERVAL, MULTIPLIER, PASSIVE,
 	INTERFACE, MULTIHOP, NEIGHBOR, DEV, LOCAL, AUTHENTICATION,
-	NONE, SIMPLE, METICULOUS, KEYED, MD5, SHA1, IPV4, IPV6, DIRECT)
+	NONE, SIMPLE, METICULOUS, KEYED, MD5, SHA1, IPV4, IPV6, DIRECT,
+	STRICT, BIND)
 
 %type <iface> bfd_neigh_iface
 %type <a> bfd_neigh_local
@@ -48,6 +49,7 @@ bfd_proto_item:
  | INTERFACE bfd_iface
  | MULTIHOP bfd_multihop
  | NEIGHBOR bfd_neighbor
+ | STRICT BIND bool { BFD_CFG->strict_bind = $3; }
  ;
 
 bfd_proto_opts:
diff --git a/proto/bfd/packets.c b/proto/bfd/packets.c
index 7618e20f..5f10734c 100644
--- a/proto/bfd/packets.c
+++ b/proto/bfd/packets.c
@@ -366,7 +366,9 @@ bfd_rx_hook(sock *sk, uint len)
     if (ps > BFD_STATE_DOWN)
       DROP("invalid init state", ps);
 
-    uint ifindex = (sk->sport == BFD_CONTROL_PORT) ? sk->lifindex : 0;
+    uint ifindex = (sk->sport == BFD_CONTROL_PORT) ?
+      (sk->iface ? sk->iface->index : sk->lifindex) :
+      0;
     s = bfd_find_session_by_addr(p, sk->faddr, ifindex);
 
     /* FIXME: better session matching and message */
@@ -438,6 +440,38 @@ bfd_open_rx_sk(struct bfd_proto *p, int multihop, int af)
   return NULL;
 }
 
+sock *
+bfd_open_rx_sk_bound(struct bfd_proto *p, ip_addr local, struct iface *ifa)
+{
+  sock *sk = sk_new(p->tpool);
+  sk->type = SK_UDP;
+  sk->saddr = local;
+  sk->sport = ifa ? BFD_CONTROL_PORT : BFD_MULTI_CTL_PORT;
+  sk->iface = ifa;
+  sk->vrf = p->p.vrf;
+  sk->data = p;
+
+  sk->rbsize = BFD_MAX_LEN;
+  sk->rx_hook = bfd_rx_hook;
+  sk->err_hook = bfd_err_hook;
+
+  /* TODO: configurable ToS and priority */
+  sk->tos = IP_PREC_INTERNET_CONTROL;
+  sk->priority = sk_priority_control;
+  sk->flags = SKF_THREAD | SKF_BIND | (ifa ? SKF_TTL_RX : 0);
+
+  if (sk_open(sk) < 0)
+    goto err;
+
+  sk_start(sk);
+  return sk;
+
+ err:
+  sk_log_error(sk, p->p.name);
+  rfree(sk);
+  return NULL;
+}
+
 sock *
 bfd_open_tx_sk(struct bfd_proto *p, ip_addr local, struct iface *ifa)
 {
-- 
cgit v1.2.3


From ef6a903e6f44b467f9606018446095521ad01ef1 Mon Sep 17 00:00:00 2001
From: Maria Matejka <mq@ucw.cz>
Date: Thu, 31 Mar 2022 19:09:38 +0200
Subject: Splitting route data structures out to lib

---
 conf/cf-lex.l          |   2 +-
 conf/conf.c            |   2 +-
 conf/confbase.Y        |   2 +-
 filter/data.c          |   2 +-
 filter/f-util.c        |   2 +-
 filter/filter.c        |   2 +-
 filter/filter.h        |   2 +-
 lib/event_test.c       |   2 +-
 lib/route.h            | 332 +++++++++++++++++++++++++
 nest/a-path.c          |   2 +-
 nest/a-path_test.c     |   2 +-
 nest/a-set.c           |   2 +-
 nest/a-set_test.c      |   2 +-
 nest/attrs.h           |   2 +-
 nest/cmds.c            |   2 +-
 nest/proto.c           |   2 +-
 nest/protocol.h        |   2 +-
 nest/route.h           | 639 -------------------------------------------------
 nest/rt-attr.c         |  21 +-
 nest/rt-dev.c          |   2 +-
 nest/rt-fib.c          |   2 +-
 nest/rt-show.c         |   2 +-
 nest/rt-table.c        |   2 +-
 nest/rt.h              | 343 ++++++++++++++++++++++++++
 proto/babel/babel.h    |   2 +-
 proto/bfd/bfd.h        |   2 +-
 proto/bgp/attrs.c      |   2 +-
 proto/bgp/bgp.c        |   2 +-
 proto/bgp/bgp.h        |   2 +-
 proto/bgp/packets.c    |   2 +-
 proto/mrt/mrt.h        |   2 +-
 proto/ospf/ospf.h      |   2 +-
 proto/perf/perf.c      |   2 +-
 proto/pipe/pipe.c      |   2 +-
 proto/radv/radv.h      |   2 +-
 proto/rip/rip.h        |   2 +-
 proto/rpki/rpki.h      |   2 +-
 proto/static/static.c  |   2 +-
 proto/static/static.h  |   2 +-
 sysdep/bsd/krt-sock.c  |   2 +-
 sysdep/linux/netlink.c |   2 +-
 sysdep/unix/krt.c      |   2 +-
 sysdep/unix/main.c     |   2 +-
 test/bt-utils.c        |   2 +-
 44 files changed, 716 insertions(+), 699 deletions(-)
 create mode 100644 lib/route.h
 delete mode 100644 nest/route.h
 create mode 100644 nest/rt.h

(limited to 'proto/bfd')

diff --git a/conf/cf-lex.l b/conf/cf-lex.l
index b9457a83..75e1ceeb 100644
--- a/conf/cf-lex.l
+++ b/conf/cf-lex.l
@@ -42,7 +42,7 @@
 #define PARSER 1
 
 #include "nest/bird.h"
-#include "nest/route.h"
+#include "nest/rt.h"
 #include "nest/protocol.h"
 #include "filter/filter.h"
 #include "filter/f-inst.h"
diff --git a/conf/conf.c b/conf/conf.c
index a2b01667..0230053b 100644
--- a/conf/conf.c
+++ b/conf/conf.c
@@ -46,7 +46,7 @@
 #undef LOCAL_DEBUG
 
 #include "nest/bird.h"
-#include "nest/route.h"
+#include "nest/rt.h"
 #include "nest/protocol.h"
 #include "nest/iface.h"
 #include "lib/resource.h"
diff --git a/conf/confbase.Y b/conf/confbase.Y
index 753df325..3fdacb12 100644
--- a/conf/confbase.Y
+++ b/conf/confbase.Y
@@ -18,7 +18,7 @@ CF_HDR
 #include "lib/string.h"
 #include "nest/protocol.h"
 #include "nest/iface.h"
-#include "nest/route.h"
+#include "nest/rt.h"
 #include "nest/bfd.h"
 #include "nest/cli.h"
 #include "filter/filter.h"
diff --git a/filter/data.c b/filter/data.c
index feb8c8bb..87ef4ff1 100644
--- a/filter/data.c
+++ b/filter/data.c
@@ -16,7 +16,7 @@
 #include "lib/unaligned.h"
 #include "lib/net.h"
 #include "lib/ip.h"
-#include "nest/route.h"
+#include "nest/rt.h"
 #include "nest/protocol.h"
 #include "nest/iface.h"
 #include "nest/attrs.h"
diff --git a/filter/f-util.c b/filter/f-util.c
index 79cf3452..83ae01f6 100644
--- a/filter/f-util.c
+++ b/filter/f-util.c
@@ -13,7 +13,7 @@
 #include "filter/f-inst.h"
 #include "lib/idm.h"
 #include "nest/protocol.h"
-#include "nest/route.h"
+#include "nest/rt.h"
 
 #define P(a,b) ((a<<8) | b)
 
diff --git a/filter/filter.c b/filter/filter.c
index 7004b96d..31ae79fe 100644
--- a/filter/filter.c
+++ b/filter/filter.c
@@ -35,7 +35,7 @@
 #include "lib/ip.h"
 #include "lib/net.h"
 #include "lib/flowspec.h"
-#include "nest/route.h"
+#include "nest/rt.h"
 #include "nest/protocol.h"
 #include "nest/iface.h"
 #include "nest/attrs.h"
diff --git a/filter/filter.h b/filter/filter.h
index e9c9d917..8ce6c1e0 100644
--- a/filter/filter.h
+++ b/filter/filter.h
@@ -13,7 +13,7 @@
 #include "lib/resource.h"
 #include "lib/ip.h"
 #include "lib/macro.h"
-#include "nest/route.h"
+#include "nest/rt.h"
 #include "nest/attrs.h"
 
 /* Possible return values of filter execution */
diff --git a/lib/event_test.c b/lib/event_test.c
index e1fbea8f..e14d0b95 100644
--- a/lib/event_test.c
+++ b/lib/event_test.c
@@ -15,7 +15,7 @@
 #include "nest/locks.h"
 #include "sysdep/unix/unix.h"
 #include "nest/iface.h"
-#include "nest/route.h"
+#include "nest/rt.h"
 
 #define MAX_NUM 4
 
diff --git a/lib/route.h b/lib/route.h
new file mode 100644
index 00000000..47355abc
--- /dev/null
+++ b/lib/route.h
@@ -0,0 +1,332 @@
+/*
+ *	BIRD Internet Routing Daemon -- Routing data structures
+ *
+ *	(c) 1998--2000 Martin Mares <mj@ucw.cz>
+ *	(c) 2022 Maria Matejka <mq@jmq.cz>
+ *
+ *	Can be freely distributed and used under the terms of the GNU GPL.
+ */
+
+#ifndef _BIRD_LIB_ROUTE_H_
+#define _BIRD_LIB_ROUTE_H_
+
+struct network;
+struct proto;
+struct cli;
+
+typedef struct rte {
+  struct rte *next;
+  struct network *net;			/* Network this RTE belongs to */
+  struct rte_src *src;			/* Route source that created the route */
+  struct channel *sender;		/* Channel used to send the route to the routing table */
+  struct rta *attrs;			/* Attributes of this route */
+  u32 id;				/* Table specific route id */
+  byte flags;				/* Flags (REF_...) */
+  byte pflags;				/* Protocol-specific flags */
+  btime lastmod;			/* Last modified */
+} rte;
+
+#define REF_COW		1		/* Copy this rte on write */
+#define REF_FILTERED	2		/* Route is rejected by import filter */
+#define REF_STALE	4		/* Route is stale in a refresh cycle */
+#define REF_DISCARD	8		/* Route is scheduled for discard */
+#define REF_MODIFY	16		/* Route is scheduled for modify */
+
+/* Route is valid for propagation (may depend on other flags in the future), accepts NULL */
+static inline int rte_is_valid(rte *r) { return r && !(r->flags & REF_FILTERED); }
+
+/* Route just has REF_FILTERED flag */
+static inline int rte_is_filtered(rte *r) { return !!(r->flags & REF_FILTERED); }
+
+struct rte_src {
+  struct rte_src *next;			/* Hash chain */
+  struct proto *proto;			/* Protocol the source is based on */
+  u32 private_id;			/* Private ID, assigned by the protocol */
+  u32 global_id;			/* Globally unique ID of the source */
+  unsigned uc;				/* Use count */
+};
+
+
+struct rte_src *rt_find_source(struct proto *p, u32 id);
+struct rte_src *rt_get_source(struct proto *p, u32 id);
+static inline void rt_lock_source(struct rte_src *src) { src->uc++; }
+static inline void rt_unlock_source(struct rte_src *src) { src->uc--; }
+void rt_prune_sources(void);
+
+/*
+ *	Route Attributes
+ *
+ *	Beware: All standard BGP attributes must be represented here instead
+ *	of making them local to the route. This is needed to ensure proper
+ *	construction of BGP route attribute lists.
+ */
+
+/* Nexthop structure */
+struct nexthop {
+  ip_addr gw;				/* Next hop */
+  struct iface *iface;			/* Outgoing interface */
+  struct nexthop *next;
+  byte flags;
+  byte weight;
+  byte labels_orig;			/* Number of labels before hostentry was applied */
+  byte labels;				/* Number of all labels */
+  u32 label[0];
+};
+
+#define RNF_ONLINK		0x1	/* Gateway is onlink regardless of IP ranges */
+
+
+typedef struct rta {
+  struct rta *next, **pprev;		/* Hash chain */
+  u32 uc;				/* Use count */
+  u32 hash_key;				/* Hash over important fields */
+  struct ea_list *eattrs;		/* Extended Attribute chain */
+  struct hostentry *hostentry;		/* Hostentry for recursive next-hops */
+  ip_addr from;				/* Advertising router */
+  u32 igp_metric;			/* IGP metric to next hop (for iBGP routes) */
+  u16 cached:1;				/* Are attributes cached? */
+  u16 source:7;				/* Route source (RTS_...) */
+  u16 scope:4;				/* Route scope (SCOPE_... -- see ip.h) */
+  u16 dest:4;				/* Route destination type (RTD_...) */
+  word pref;
+  struct nexthop nh;			/* Next hop */
+} rta;
+
+#define RTS_STATIC 1			/* Normal static route */
+#define RTS_INHERIT 2			/* Route inherited from kernel */
+#define RTS_DEVICE 3			/* Device route */
+#define RTS_STATIC_DEVICE 4		/* Static device route */
+#define RTS_REDIRECT 5			/* Learned via redirect */
+#define RTS_RIP 6			/* RIP route */
+#define RTS_OSPF 7			/* OSPF route */
+#define RTS_OSPF_IA 8			/* OSPF inter-area route */
+#define RTS_OSPF_EXT1 9			/* OSPF external route type 1 */
+#define RTS_OSPF_EXT2 10		/* OSPF external route type 2 */
+#define RTS_BGP 11			/* BGP route */
+#define RTS_PIPE 12			/* Inter-table wormhole */
+#define RTS_BABEL 13			/* Babel route */
+#define RTS_RPKI 14			/* Route Origin Authorization */
+#define RTS_PERF 15			/* Perf checker */
+#define RTS_MAX 16
+
+#define RTD_NONE 0			/* Undefined next hop */
+#define RTD_UNICAST 1			/* Next hop is neighbor router */
+#define RTD_BLACKHOLE 2			/* Silently drop packets */
+#define RTD_UNREACHABLE 3		/* Reject as unreachable */
+#define RTD_PROHIBIT 4			/* Administratively prohibited */
+#define RTD_MAX 5
+
+#define IGP_METRIC_UNKNOWN 0x80000000	/* Default igp_metric used when no other
+					   protocol-specific metric is availabe */
+
+
+extern const char * rta_dest_names[RTD_MAX];
+
+static inline const char *rta_dest_name(uint n)
+{ return (n < RTD_MAX) ? rta_dest_names[n] : "???"; }
+
+/* Route has regular, reachable nexthop (i.e. not RTD_UNREACHABLE and like) */
+static inline int rte_is_reachable(rte *r)
+{ return r->attrs->dest == RTD_UNICAST; }
+
+
+/*
+ *	Extended Route Attributes
+ */
+
+typedef struct eattr {
+  word id;				/* EA_CODE(PROTOCOL_..., protocol-dependent ID) */
+  byte flags;				/* Protocol-dependent flags */
+  byte type:5;				/* Attribute type */
+  byte originated:1;			/* The attribute has originated locally */
+  byte fresh:1;				/* An uncached attribute (e.g. modified in export filter) */
+  byte undef:1;				/* Explicitly undefined */
+
+  union bval u;
+} eattr;
+
+
+#define EA_CODE(proto,id) (((proto) << 8) | (id))
+#define EA_ID(ea) ((ea) & 0xff)
+#define EA_PROTO(ea) ((ea) >> 8)
+#define EA_CUSTOM(id) ((id) | EA_CUSTOM_BIT)
+#define EA_IS_CUSTOM(ea) ((ea) & EA_CUSTOM_BIT)
+#define EA_CUSTOM_ID(ea) ((ea) & ~EA_CUSTOM_BIT)
+
+const char *ea_custom_name(uint ea);
+
+#define EA_GEN_IGP_METRIC EA_CODE(PROTOCOL_NONE, 0)
+
+#define EA_CODE_MASK 0xffff
+#define EA_CUSTOM_BIT 0x8000
+#define EA_ALLOW_UNDEF 0x10000		/* ea_find: allow EAF_TYPE_UNDEF */
+#define EA_BIT(n) ((n) << 24)		/* Used in bitfield accessors */
+#define EA_BIT_GET(ea) ((ea) >> 24)
+
+typedef struct adata {
+  uint length;				/* Length of data */
+  byte data[0];
+} adata;
+
+extern const adata null_adata;		/* adata of length 0 */
+
+static inline struct adata *
+lp_alloc_adata(struct linpool *pool, uint len)
+{
+  struct adata *ad = lp_alloc(pool, sizeof(struct adata) + len);
+  ad->length = len;
+  return ad;
+}
+
+static inline int adata_same(const struct adata *a, const struct adata *b)
+{ return (a->length == b->length && !memcmp(a->data, b->data, a->length)); }
+
+
+typedef struct ea_list {
+  struct ea_list *next;			/* In case we have an override list */
+  byte flags;				/* Flags: EALF_... */
+  byte rfu;
+  word count;				/* Number of attributes */
+  eattr attrs[0];			/* Attribute definitions themselves */
+} ea_list;
+
+#define EALF_SORTED 1			/* Attributes are sorted by code */
+#define EALF_BISECT 2			/* Use interval bisection for searching */
+#define EALF_CACHED 4			/* Attributes belonging to cached rta */
+
+struct ea_walk_state {
+  ea_list *eattrs;			/* Ccurrent ea_list, initially set by caller */
+  eattr *ea;				/* Current eattr, initially NULL */
+  u32 visited[4];			/* Bitfield, limiting max to 128 */
+};
+
+eattr *ea_find(ea_list *, unsigned ea);
+eattr *ea_walk(struct ea_walk_state *s, uint id, uint max);
+
+/**
+ * ea_get_int - fetch an integer attribute
+ * @e: attribute list
+ * @id: attribute ID
+ * @def: default value
+ *
+ * This function is a shortcut for retrieving a value of an integer attribute
+ * by calling ea_find() to find the attribute, extracting its value or returning
+ * a provided default if no such attribute is present.
+ */
+static inline u32
+ea_get_int(ea_list *e, unsigned id, u32 def)
+{
+  eattr *a = ea_find(e, id);
+  return a ? a->u.data : def;
+}
+
+void ea_dump(ea_list *);
+void ea_sort(ea_list *);		/* Sort entries in all sub-lists */
+unsigned ea_scan(ea_list *);		/* How many bytes do we need for merged ea_list */
+void ea_merge(ea_list *from, ea_list *to); /* Merge sub-lists to allocated buffer */
+int ea_same(ea_list *x, ea_list *y);	/* Test whether two ea_lists are identical */
+uint ea_hash(ea_list *e);	/* Calculate 16-bit hash value */
+ea_list *ea_append(ea_list *to, ea_list *what);
+void ea_format_bitfield(const struct eattr *a, byte *buf, int bufsize, const char **names, int min, int max);
+
+#define ea_normalize(ea) do { \
+  if (ea->next) { \
+    ea_list *t = alloca(ea_scan(ea)); \
+    ea_merge(ea, t); \
+    ea = t; \
+  } \
+  ea_sort(ea); \
+  if (ea->count == 0) \
+    ea = NULL; \
+} while(0) \
+
+struct ea_one_attr_list {
+  ea_list l;
+  eattr a;
+};
+
+static inline eattr *
+ea_set_attr(ea_list **to, struct linpool *pool, uint id, uint flags, uint type, union bval val)
+{
+  struct ea_one_attr_list *ea = lp_alloc(pool, sizeof(*ea));
+  *ea = (struct ea_one_attr_list) {
+    .l.flags = EALF_SORTED,
+    .l.count = 1,
+    .l.next = *to,
+
+    .a.id = id,
+    .a.type = type,
+    .a.flags = flags,
+  };
+
+  ea->a.u = val;
+  *to = &ea->l;
+
+  return &ea->a;
+}
+
+static inline void
+ea_unset_attr(ea_list **to, struct linpool *pool, _Bool local, uint code)
+{
+  struct ea_one_attr_list *ea = lp_alloc(pool, sizeof(*ea));
+  *ea = (struct ea_one_attr_list) {
+    .l.flags = EALF_SORTED,
+    .l.count = 1,
+    .l.next = *to,
+    .a.id = code,
+    .a.fresh = local,
+    .a.originated = local,
+    .a.undef = 1,
+  };
+
+  *to = &ea->l;
+}
+
+static inline void
+ea_set_attr_u32(ea_list **to, struct linpool *pool, uint id, uint flags, uint type, u32 data)
+{
+  union bval bv = { .data = data };
+  ea_set_attr(to, pool, id, flags, type, bv);
+}
+
+static inline void
+ea_set_attr_data(ea_list **to, struct linpool *pool, uint id, uint flags, uint type, void *data, uint len)
+{
+  struct adata *a = lp_alloc_adata(pool, len);
+  memcpy(a->data, data, len);
+  union bval bv = { .ptr = a, };
+  ea_set_attr(to, pool, id, flags, type, bv);
+}
+
+
+#define NEXTHOP_MAX_SIZE (sizeof(struct nexthop) + sizeof(u32)*MPLS_MAX_LABEL_STACK)
+
+static inline size_t nexthop_size(const struct nexthop *nh)
+{ return sizeof(struct nexthop) + sizeof(u32)*nh->labels; }
+int nexthop__same(struct nexthop *x, struct nexthop *y); /* Compare multipath nexthops */
+static inline int nexthop_same(struct nexthop *x, struct nexthop *y)
+{ return (x == y) || nexthop__same(x, y); }
+struct nexthop *nexthop_merge(struct nexthop *x, struct nexthop *y, int rx, int ry, int max, linpool *lp);
+struct nexthop *nexthop_sort(struct nexthop *x);
+static inline void nexthop_link(struct rta *a, struct nexthop *from)
+{ memcpy(&a->nh, from, nexthop_size(from)); }
+void nexthop_insert(struct nexthop **n, struct nexthop *y);
+int nexthop_is_sorted(struct nexthop *x);
+
+void rta_init(void);
+static inline size_t rta_size(const rta *a) { return sizeof(rta) + sizeof(u32)*a->nh.labels; }
+#define RTA_MAX_SIZE (sizeof(rta) + sizeof(u32)*MPLS_MAX_LABEL_STACK)
+rta *rta_lookup(rta *);			/* Get rta equivalent to this one, uc++ */
+static inline int rta_is_cached(rta *r) { return r->cached; }
+static inline rta *rta_clone(rta *r) { r->uc++; return r; }
+void rta__free(rta *r);
+static inline void rta_free(rta *r) { if (r && !--r->uc) rta__free(r); }
+rta *rta_do_cow(rta *o, linpool *lp);
+static inline rta * rta_cow(rta *r, linpool *lp) { return rta_is_cached(r) ? rta_do_cow(r, lp) : r; }
+void rta_dump(rta *);
+void rta_dump_all(void);
+void rta_show(struct cli *, rta *);
+
+u32 rt_get_igp_metric(rte *rt);
+
+#endif
diff --git a/nest/a-path.c b/nest/a-path.c
index badbc911..64504c93 100644
--- a/nest/a-path.c
+++ b/nest/a-path.c
@@ -8,7 +8,7 @@
  */
 
 #include "nest/bird.h"
-#include "nest/route.h"
+#include "nest/rt.h"
 #include "nest/attrs.h"
 #include "lib/resource.h"
 #include "lib/unaligned.h"
diff --git a/nest/a-path_test.c b/nest/a-path_test.c
index e007a450..a6b4d3d8 100644
--- a/nest/a-path_test.c
+++ b/nest/a-path_test.c
@@ -9,7 +9,7 @@
 #include "test/birdtest.h"
 #include "test/bt-utils.h"
 
-#include "nest/route.h"
+#include "nest/rt.h"
 #include "nest/attrs.h"
 #include "lib/resource.h"
 
diff --git a/nest/a-set.c b/nest/a-set.c
index 71fbac94..93f6431e 100644
--- a/nest/a-set.c
+++ b/nest/a-set.c
@@ -10,7 +10,7 @@
 #include <stdlib.h>
 
 #include "nest/bird.h"
-#include "nest/route.h"
+#include "nest/rt.h"
 #include "nest/attrs.h"
 #include "lib/resource.h"
 #include "lib/string.h"
diff --git a/nest/a-set_test.c b/nest/a-set_test.c
index 904e6764..daa6ab74 100644
--- a/nest/a-set_test.c
+++ b/nest/a-set_test.c
@@ -10,7 +10,7 @@
 #include "test/bt-utils.h"
 
 #include "lib/net.h"
-#include "nest/route.h"
+#include "nest/rt.h"
 #include "nest/attrs.h"
 #include "lib/resource.h"
 
diff --git a/nest/attrs.h b/nest/attrs.h
index ef2b95e6..e0595846 100644
--- a/nest/attrs.h
+++ b/nest/attrs.h
@@ -11,7 +11,7 @@
 
 #include <stdint.h>
 #include "lib/unaligned.h"
-#include "nest/route.h"
+#include "lib/route.h"
 
 
 /* a-path.c */
diff --git a/nest/cmds.c b/nest/cmds.c
index 8481bf96..3e59cb6f 100644
--- a/nest/cmds.c
+++ b/nest/cmds.c
@@ -8,7 +8,7 @@
 
 #include "nest/bird.h"
 #include "nest/protocol.h"
-#include "nest/route.h"
+#include "nest/rt.h"
 #include "nest/cli.h"
 #include "conf/conf.h"
 #include "nest/cmds.h"
diff --git a/nest/proto.c b/nest/proto.c
index c6bda73b..95c319db 100644
--- a/nest/proto.c
+++ b/nest/proto.c
@@ -16,7 +16,7 @@
 #include "lib/timer.h"
 #include "lib/string.h"
 #include "conf/conf.h"
-#include "nest/route.h"
+#include "nest/rt.h"
 #include "nest/iface.h"
 #include "nest/cli.h"
 #include "filter/filter.h"
diff --git a/nest/protocol.h b/nest/protocol.h
index d0810a8f..7fb08992 100644
--- a/nest/protocol.h
+++ b/nest/protocol.h
@@ -12,7 +12,7 @@
 #include "lib/lists.h"
 #include "lib/resource.h"
 #include "lib/event.h"
-#include "nest/route.h"
+#include "nest/rt.h"
 #include "conf/conf.h"
 
 struct iface;
diff --git a/nest/route.h b/nest/route.h
deleted file mode 100644
index c6d30148..00000000
--- a/nest/route.h
+++ /dev/null
@@ -1,639 +0,0 @@
-/*
- *	BIRD Internet Routing Daemon -- Routing Table
- *
- *	(c) 1998--2000 Martin Mares <mj@ucw.cz>
- *
- *	Can be freely distributed and used under the terms of the GNU GPL.
- */
-
-#ifndef _BIRD_ROUTE_H_
-#define _BIRD_ROUTE_H_
-
-#include "lib/lists.h"
-#include "lib/bitmap.h"
-#include "lib/resource.h"
-#include "lib/net.h"
-#include "lib/type.h"
-#include "lib/fib.h"
-
-struct ea_list;
-struct protocol;
-struct proto;
-struct rte_src;
-struct symbol;
-struct timer;
-struct filter;
-struct f_trie;
-struct f_trie_walk_state;
-struct cli;
-
-/*
- *	Master Routing Tables. Generally speaking, each of them contains a FIB
- *	with each entry pointing to a list of route entries representing routes
- *	to given network (with the selected one at the head).
- *
- *	Each of the RTE's contains variable data (the preference and protocol-dependent
- *	metrics) and a pointer to a route attribute block common for many routes).
- *
- *	It's guaranteed that there is at most one RTE for every (prefix,proto) pair.
- */
-
-struct rtable_config {
-  node n;
-  char *name;
-  struct rtable *table;
-  struct proto_config *krt_attached;	/* Kernel syncer attached to this table */
-  uint addr_type;			/* Type of address data stored in table (NET_*) */
-  int gc_max_ops;			/* Maximum number of operations before GC is run */
-  int gc_min_time;			/* Minimum time between two consecutive GC runs */
-  byte sorted;				/* Routes of network are sorted according to rte_better() */
-  byte internal;			/* Internal table of a protocol */
-  byte trie_used;			/* Rtable has attached trie */
-  btime min_settle_time;		/* Minimum settle time for notifications */
-  btime max_settle_time;		/* Maximum settle time for notifications */
-};
-
-typedef struct rtable {
-  resource r;
-  node n;				/* Node in list of all tables */
-  pool *rp;				/* Resource pool to allocate everything from, including itself */
-  struct fib fib;
-  struct f_trie *trie;			/* Trie of prefixes defined in fib */
-  char *name;				/* Name of this table */
-  list channels;			/* List of attached channels (struct channel) */
-  uint addr_type;			/* Type of address data stored in table (NET_*) */
-  int pipe_busy;			/* Pipe loop detection */
-  int use_count;			/* Number of protocols using this table */
-  u32 rt_count;				/* Number of routes in the table */
-
-  byte internal;			/* Internal table of a protocol */
-
-  struct hmap id_map;
-  struct hostcache *hostcache;
-  struct rtable_config *config;		/* Configuration of this table */
-  struct config *deleted;		/* Table doesn't exist in current configuration,
-					 * delete as soon as use_count becomes 0 and remove
-					 * obstacle from this routing table.
-					 */
-  struct event *rt_event;		/* Routing table event */
-  btime last_rt_change;			/* Last time when route changed */
-  btime base_settle_time;		/* Start time of rtable settling interval */
-  btime gc_time;			/* Time of last GC */
-  int gc_counter;			/* Number of operations since last GC */
-  byte prune_state;			/* Table prune state, 1 -> scheduled, 2-> running */
-  byte prune_trie;			/* Prune prefix trie during next table prune */
-  byte hcu_scheduled;			/* Hostcache update is scheduled */
-  byte nhu_state;			/* Next Hop Update state */
-  struct fib_iterator prune_fit;	/* Rtable prune FIB iterator */
-  struct fib_iterator nhu_fit;		/* Next Hop Update FIB iterator */
-  struct f_trie *trie_new;		/* New prefix trie defined during pruning */
-  struct f_trie *trie_old;		/* Old prefix trie waiting to be freed */
-  u32 trie_lock_count;			/* Prefix trie locked by walks */
-  u32 trie_old_lock_count;		/* Old prefix trie locked by walks */
-
-  list subscribers;			/* Subscribers for notifications */
-  struct timer *settle_timer;		/* Settle time for notifications */
-  list flowspec_links;			/* List of flowspec links, src for NET_IPx and dst for NET_FLOWx */
-  struct f_trie *flowspec_trie;		/* Trie for evaluation of flowspec notifications */
-} rtable;
-
-struct rt_subscription {
-  node n;
-  rtable *tab;
-  void (*hook)(struct rt_subscription *b);
-  void *data;
-};
-
-struct rt_flowspec_link {
-  node n;
-  rtable *src;
-  rtable *dst;
-  u32 uc;
-};
-
-#define NHU_CLEAN	0
-#define NHU_SCHEDULED	1
-#define NHU_RUNNING	2
-#define NHU_DIRTY	3
-
-typedef struct network {
-  struct rte *routes;			/* Available routes for this network */
-  struct fib_node n;			/* FIB flags reserved for kernel syncer */
-} net;
-
-struct hostcache {
-  slab *slab;				/* Slab holding all hostentries */
-  struct hostentry **hash_table;	/* Hash table for hostentries */
-  unsigned hash_order, hash_shift;
-  unsigned hash_max, hash_min;
-  unsigned hash_items;
-  linpool *lp;				/* Linpool for trie */
-  struct f_trie *trie;			/* Trie of prefixes that might affect hostentries */
-  list hostentries;			/* List of all hostentries */
-  byte update_hostcache;
-};
-
-struct hostentry {
-  node ln;
-  ip_addr addr;				/* IP address of host, part of key */
-  ip_addr link;				/* (link-local) IP address of host, used as gw
-					   if host is directly attached */
-  struct rtable *tab;			/* Dependent table, part of key */
-  struct hostentry *next;		/* Next in hash chain */
-  unsigned hash_key;			/* Hash key */
-  unsigned uc;				/* Use count */
-  struct rta *src;			/* Source rta entry */
-  byte dest;				/* Chosen route destination type (RTD_...) */
-  byte nexthop_linkable;		/* Nexthop list is completely non-device */
-  u32 igp_metric;			/* Chosen route IGP metric */
-};
-
-typedef struct rte {
-  struct rte *next;
-  net *net;				/* Network this RTE belongs to */
-  struct rte_src *src;			/* Route source that created the route */
-  struct channel *sender;		/* Channel used to send the route to the routing table */
-  struct rta *attrs;			/* Attributes of this route */
-  u32 id;				/* Table specific route id */
-  byte flags;				/* Flags (REF_...) */
-  byte pflags;				/* Protocol-specific flags */
-  btime lastmod;			/* Last modified */
-} rte;
-
-#define REF_COW		1		/* Copy this rte on write */
-#define REF_FILTERED	2		/* Route is rejected by import filter */
-#define REF_STALE	4		/* Route is stale in a refresh cycle */
-#define REF_DISCARD	8		/* Route is scheduled for discard */
-#define REF_MODIFY	16		/* Route is scheduled for modify */
-
-/* Route is valid for propagation (may depend on other flags in the future), accepts NULL */
-static inline int rte_is_valid(rte *r) { return r && !(r->flags & REF_FILTERED); }
-
-/* Route just has REF_FILTERED flag */
-static inline int rte_is_filtered(rte *r) { return !!(r->flags & REF_FILTERED); }
-
-
-/* Types of route announcement, also used as flags */
-#define RA_UNDEF	0		/* Undefined RA type */
-#define RA_OPTIMAL	1		/* Announcement of optimal route change */
-#define RA_ACCEPTED	2		/* Announcement of first accepted route */
-#define RA_ANY		3		/* Announcement of any route change */
-#define RA_MERGED	4		/* Announcement of optimal route merged with next ones */
-
-/* Return value of preexport() callback */
-#define RIC_ACCEPT	1		/* Accepted by protocol */
-#define RIC_PROCESS	0		/* Process it through import filter */
-#define RIC_REJECT	-1		/* Rejected by protocol */
-#define RIC_DROP	-2		/* Silently dropped by protocol */
-
-extern list routing_tables;
-struct config;
-
-void rt_init(void);
-void rt_preconfig(struct config *);
-void rt_commit(struct config *new, struct config *old);
-void rt_lock_table(rtable *);
-void rt_unlock_table(rtable *);
-struct f_trie * rt_lock_trie(rtable *tab);
-void rt_unlock_trie(rtable *tab, struct f_trie *trie);
-void rt_subscribe(rtable *tab, struct rt_subscription *s);
-void rt_unsubscribe(struct rt_subscription *s);
-void rt_flowspec_link(rtable *src, rtable *dst);
-void rt_flowspec_unlink(rtable *src, rtable *dst);
-rtable *rt_setup(pool *, struct rtable_config *);
-static inline void rt_shutdown(rtable *r) { rfree(r->rp); }
-
-static inline net *net_find(rtable *tab, const net_addr *addr) { return (net *) fib_find(&tab->fib, addr); }
-static inline net *net_find_valid(rtable *tab, const net_addr *addr)
-{ net *n = net_find(tab, addr); return (n && rte_is_valid(n->routes)) ? n : NULL; }
-static inline net *net_get(rtable *tab, const net_addr *addr) { return (net *) fib_get(&tab->fib, addr); }
-net *net_get(rtable *tab, const net_addr *addr);
-net *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 *, struct rte_src *src);
-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);
-void rt_refresh_end(rtable *t, struct channel *c);
-void rt_modify_stale(rtable *t, struct channel *c);
-void rt_schedule_prune(rtable *t);
-void rte_dump(rte *);
-void rte_free(rte *);
-rte *rte_do_cow(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 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);
-int rte_update_out(struct channel *c, const net_addr *n, rte *new, rte *old, rte **old_exported, int refeed);
-struct rtable_config *rt_new_table(struct symbol *s, uint addr_type);
-
-static inline int rt_is_ip(rtable *tab)
-{ return (tab->addr_type == NET_IP4) || (tab->addr_type == NET_IP6); }
-
-static inline int rt_is_vpn(rtable *tab)
-{ return (tab->addr_type == NET_VPN4) || (tab->addr_type == NET_VPN6); }
-
-static inline int rt_is_roa(rtable *tab)
-{ return (tab->addr_type == NET_ROA4) || (tab->addr_type == NET_ROA6); }
-
-static inline int rt_is_flow(rtable *tab)
-{ return (tab->addr_type == NET_FLOW4) || (tab->addr_type == NET_FLOW6); }
-
-
-/* Default limit for ECMP next hops, defined in sysdep code */
-extern const int rt_default_ecmp;
-
-struct rt_show_data_rtable {
-  node n;
-  rtable *table;
-  struct channel *export_channel;
-};
-
-struct rt_show_data {
-  net_addr *addr;
-  list tables;
-  struct rt_show_data_rtable *tab;	/* Iterator over table list */
-  struct rt_show_data_rtable *last_table; /* Last table in output */
-  struct fib_iterator fit;		/* Iterator over networks in table */
-  struct f_trie_walk_state *walk_state;	/* Iterator over networks in trie */
-  struct f_trie *walk_lock;		/* Locked trie for walking */
-  int verbose, tables_defined_by;
-  const struct filter *filter;
-  struct proto *show_protocol;
-  struct proto *export_protocol;
-  struct channel *export_channel;
-  struct config *running_on_config;
-  struct krt_proto *kernel;
-  int export_mode, addr_mode, primary_only, filtered, stats;
-
-  int table_open;			/* Iteration (fit) is open */
-  int trie_walk;			/* Current table is iterated using trie */
-  int net_counter, rt_counter, show_counter, table_counter;
-  int net_counter_last, rt_counter_last, show_counter_last;
-};
-
-void rt_show(struct rt_show_data *);
-struct rt_show_data_rtable * rt_show_add_table(struct rt_show_data *d, rtable *t);
-
-/* Value of table definition mode in struct rt_show_data */
-#define RSD_TDB_DEFAULT	  0		/* no table specified */
-#define RSD_TDB_INDIRECT  0		/* show route ... protocol P ... */
-#define RSD_TDB_ALL	  RSD_TDB_SET			/* show route ... table all ... */
-#define RSD_TDB_DIRECT	  RSD_TDB_SET | RSD_TDB_NMN	/* show route ... table X table Y ... */
-
-#define RSD_TDB_SET	  0x1		/* internal: show empty tables */
-#define RSD_TDB_NMN	  0x2		/* internal: need matching net */
-
-/* Value of addr_mode */
-#define RSD_ADDR_EQUAL	1		/* Exact query - show route <addr> */
-#define RSD_ADDR_FOR	2		/* Longest prefix match - show route for <addr> */
-#define RSD_ADDR_IN	3		/* Interval query - show route in <addr> */
-
-/* Value of export_mode in struct rt_show_data */
-#define RSEM_NONE	0		/* Export mode not used */
-#define RSEM_PREEXPORT	1		/* Routes ready for export, before filtering */
-#define RSEM_EXPORT	2		/* Routes accepted by export filter */
-#define RSEM_NOEXPORT	3		/* Routes rejected by export filter */
-#define RSEM_EXPORTED	4		/* Routes marked in export map */
-
-/*
- *	Route Attributes
- *
- *	Beware: All standard BGP attributes must be represented here instead
- *	of making them local to the route. This is needed to ensure proper
- *	construction of BGP route attribute lists.
- */
-
-/* Nexthop structure */
-struct nexthop {
-  ip_addr gw;				/* Next hop */
-  struct iface *iface;			/* Outgoing interface */
-  struct nexthop *next;
-  byte flags;
-  byte weight;
-  byte labels_orig;			/* Number of labels before hostentry was applied */
-  byte labels;				/* Number of all labels */
-  u32 label[0];
-};
-
-#define RNF_ONLINK		0x1	/* Gateway is onlink regardless of IP ranges */
-
-
-struct rte_src {
-  struct rte_src *next;			/* Hash chain */
-  struct proto *proto;			/* Protocol the source is based on */
-  u32 private_id;			/* Private ID, assigned by the protocol */
-  u32 global_id;			/* Globally unique ID of the source */
-  unsigned uc;				/* Use count */
-};
-
-
-typedef struct rta {
-  struct rta *next, **pprev;		/* Hash chain */
-  u32 uc;				/* Use count */
-  u32 hash_key;				/* Hash over important fields */
-  struct ea_list *eattrs;		/* Extended Attribute chain */
-  struct hostentry *hostentry;		/* Hostentry for recursive next-hops */
-  ip_addr from;				/* Advertising router */
-  u32 igp_metric;			/* IGP metric to next hop (for iBGP routes) */
-  u16 cached:1;				/* Are attributes cached? */
-  u16 source:7;				/* Route source (RTS_...) */
-  u16 scope:4;				/* Route scope (SCOPE_... -- see ip.h) */
-  u16 dest:4;				/* Route destination type (RTD_...) */
-  word pref;
-  struct nexthop nh;			/* Next hop */
-} rta;
-
-#define RTS_STATIC 1			/* Normal static route */
-#define RTS_INHERIT 2			/* Route inherited from kernel */
-#define RTS_DEVICE 3			/* Device route */
-#define RTS_STATIC_DEVICE 4		/* Static device route */
-#define RTS_REDIRECT 5			/* Learned via redirect */
-#define RTS_RIP 6			/* RIP route */
-#define RTS_OSPF 7			/* OSPF route */
-#define RTS_OSPF_IA 8			/* OSPF inter-area route */
-#define RTS_OSPF_EXT1 9			/* OSPF external route type 1 */
-#define RTS_OSPF_EXT2 10		/* OSPF external route type 2 */
-#define RTS_BGP 11			/* BGP route */
-#define RTS_PIPE 12			/* Inter-table wormhole */
-#define RTS_BABEL 13			/* Babel route */
-#define RTS_RPKI 14			/* Route Origin Authorization */
-#define RTS_PERF 15			/* Perf checker */
-#define RTS_MAX 16
-
-#define RTD_NONE 0			/* Undefined next hop */
-#define RTD_UNICAST 1			/* Next hop is neighbor router */
-#define RTD_BLACKHOLE 2			/* Silently drop packets */
-#define RTD_UNREACHABLE 3		/* Reject as unreachable */
-#define RTD_PROHIBIT 4			/* Administratively prohibited */
-#define RTD_MAX 5
-
-#define IGP_METRIC_UNKNOWN 0x80000000	/* Default igp_metric used when no other
-					   protocol-specific metric is availabe */
-
-
-extern const char * rta_dest_names[RTD_MAX];
-
-static inline const char *rta_dest_name(uint n)
-{ return (n < RTD_MAX) ? rta_dest_names[n] : "???"; }
-
-/* Route has regular, reachable nexthop (i.e. not RTD_UNREACHABLE and like) */
-static inline int rte_is_reachable(rte *r)
-{ return r->attrs->dest == RTD_UNICAST; }
-
-
-/*
- *	Extended Route Attributes
- */
-
-typedef struct eattr {
-  word id;				/* EA_CODE(PROTOCOL_..., protocol-dependent ID) */
-  byte flags;				/* Protocol-dependent flags */
-  byte type:5;				/* Attribute type */
-  byte originated:1;			/* The attribute has originated locally */
-  byte fresh:1;				/* An uncached attribute (e.g. modified in export filter) */
-  byte undef:1;				/* Explicitly undefined */
-
-  union bval u;
-} eattr;
-
-
-#define EA_CODE(proto,id) (((proto) << 8) | (id))
-#define EA_ID(ea) ((ea) & 0xff)
-#define EA_PROTO(ea) ((ea) >> 8)
-#define EA_CUSTOM(id) ((id) | EA_CUSTOM_BIT)
-#define EA_IS_CUSTOM(ea) ((ea) & EA_CUSTOM_BIT)
-#define EA_CUSTOM_ID(ea) ((ea) & ~EA_CUSTOM_BIT)
-
-const char *ea_custom_name(uint ea);
-
-#define EA_GEN_IGP_METRIC EA_CODE(PROTOCOL_NONE, 0)
-
-#define EA_CODE_MASK 0xffff
-#define EA_CUSTOM_BIT 0x8000
-#define EA_ALLOW_UNDEF 0x10000		/* ea_find: allow EAF_TYPE_UNDEF */
-#define EA_BIT(n) ((n) << 24)		/* Used in bitfield accessors */
-#define EA_BIT_GET(ea) ((ea) >> 24)
-
-typedef struct adata {
-  uint length;				/* Length of data */
-  byte data[0];
-} adata;
-
-extern const adata null_adata;		/* adata of length 0 */
-
-static inline struct adata *
-lp_alloc_adata(struct linpool *pool, uint len)
-{
-  struct adata *ad = lp_alloc(pool, sizeof(struct adata) + len);
-  ad->length = len;
-  return ad;
-}
-
-static inline int adata_same(const struct adata *a, const struct adata *b)
-{ return (a->length == b->length && !memcmp(a->data, b->data, a->length)); }
-
-
-typedef struct ea_list {
-  struct ea_list *next;			/* In case we have an override list */
-  byte flags;				/* Flags: EALF_... */
-  byte rfu;
-  word count;				/* Number of attributes */
-  eattr attrs[0];			/* Attribute definitions themselves */
-} ea_list;
-
-#define EALF_SORTED 1			/* Attributes are sorted by code */
-#define EALF_BISECT 2			/* Use interval bisection for searching */
-#define EALF_CACHED 4			/* Attributes belonging to cached rta */
-
-struct rte_src *rt_find_source(struct proto *p, u32 id);
-struct rte_src *rt_get_source(struct proto *p, u32 id);
-static inline void rt_lock_source(struct rte_src *src) { src->uc++; }
-static inline void rt_unlock_source(struct rte_src *src) { src->uc--; }
-void rt_prune_sources(void);
-
-struct ea_walk_state {
-  ea_list *eattrs;			/* Ccurrent ea_list, initially set by caller */
-  eattr *ea;				/* Current eattr, initially NULL */
-  u32 visited[4];			/* Bitfield, limiting max to 128 */
-};
-
-eattr *ea_find(ea_list *, unsigned ea);
-eattr *ea_walk(struct ea_walk_state *s, uint id, uint max);
-u32 ea_get_int(ea_list *, unsigned ea, u32 def);
-void ea_dump(ea_list *);
-void ea_sort(ea_list *);		/* Sort entries in all sub-lists */
-unsigned ea_scan(ea_list *);		/* How many bytes do we need for merged ea_list */
-void ea_merge(ea_list *from, ea_list *to); /* Merge sub-lists to allocated buffer */
-int ea_same(ea_list *x, ea_list *y);	/* Test whether two ea_lists are identical */
-uint ea_hash(ea_list *e);	/* Calculate 16-bit hash value */
-ea_list *ea_append(ea_list *to, ea_list *what);
-void ea_format_bitfield(const struct eattr *a, byte *buf, int bufsize, const char **names, int min, int max);
-
-#define ea_normalize(ea) do { \
-  if (ea->next) { \
-    ea_list *t = alloca(ea_scan(ea)); \
-    ea_merge(ea, t); \
-    ea = t; \
-  } \
-  ea_sort(ea); \
-  if (ea->count == 0) \
-    ea = NULL; \
-} while(0) \
-
-struct ea_one_attr_list {
-  ea_list l;
-  eattr a;
-};
-
-static inline eattr *
-ea_set_attr(ea_list **to, struct linpool *pool, uint id, uint flags, uint type, union bval val)
-{
-  struct ea_one_attr_list *ea = lp_alloc(pool, sizeof(*ea));
-  *ea = (struct ea_one_attr_list) {
-    .l.flags = EALF_SORTED,
-    .l.count = 1,
-    .l.next = *to,
-
-    .a.id = id,
-    .a.type = type,
-    .a.flags = flags,
-  };
-
-  ea->a.u = val;
-  *to = &ea->l;
-
-  return &ea->a;
-}
-
-static inline void
-ea_unset_attr(ea_list **to, struct linpool *pool, _Bool local, uint code)
-{
-  struct ea_one_attr_list *ea = lp_alloc(pool, sizeof(*ea));
-  *ea = (struct ea_one_attr_list) {
-    .l.flags = EALF_SORTED,
-    .l.count = 1,
-    .l.next = *to,
-    .a.id = code,
-    .a.fresh = local,
-    .a.originated = local,
-    .a.undef = 1,
-  };
-
-  *to = &ea->l;
-}
-
-static inline void
-ea_set_attr_u32(ea_list **to, struct linpool *pool, uint id, uint flags, uint type, u32 data)
-{
-  union bval bv = { .data = data };
-  ea_set_attr(to, pool, id, flags, type, bv);
-}
-
-static inline void
-ea_set_attr_data(ea_list **to, struct linpool *pool, uint id, uint flags, uint type, void *data, uint len)
-{
-  struct adata *a = lp_alloc_adata(pool, len);
-  memcpy(a->data, data, len);
-  union bval bv = { .ptr = a, };
-  ea_set_attr(to, pool, id, flags, type, bv);
-}
-
-
-#define NEXTHOP_MAX_SIZE (sizeof(struct nexthop) + sizeof(u32)*MPLS_MAX_LABEL_STACK)
-
-static inline size_t nexthop_size(const struct nexthop *nh)
-{ return sizeof(struct nexthop) + sizeof(u32)*nh->labels; }
-int nexthop__same(struct nexthop *x, struct nexthop *y); /* Compare multipath nexthops */
-static inline int nexthop_same(struct nexthop *x, struct nexthop *y)
-{ return (x == y) || nexthop__same(x, y); }
-struct nexthop *nexthop_merge(struct nexthop *x, struct nexthop *y, int rx, int ry, int max, linpool *lp);
-struct nexthop *nexthop_sort(struct nexthop *x);
-static inline void nexthop_link(struct rta *a, struct nexthop *from)
-{ memcpy(&a->nh, from, nexthop_size(from)); }
-void nexthop_insert(struct nexthop **n, struct nexthop *y);
-int nexthop_is_sorted(struct nexthop *x);
-
-void rta_init(void);
-static inline size_t rta_size(const rta *a) { return sizeof(rta) + sizeof(u32)*a->nh.labels; }
-#define RTA_MAX_SIZE (sizeof(rta) + sizeof(u32)*MPLS_MAX_LABEL_STACK)
-rta *rta_lookup(rta *);			/* Get rta equivalent to this one, uc++ */
-static inline int rta_is_cached(rta *r) { return r->cached; }
-static inline rta *rta_clone(rta *r) { r->uc++; return r; }
-void rta__free(rta *r);
-static inline void rta_free(rta *r) { if (r && !--r->uc) rta__free(r); }
-rta *rta_do_cow(rta *o, linpool *lp);
-static inline rta * rta_cow(rta *r, linpool *lp) { return rta_is_cached(r) ? rta_do_cow(r, lp) : r; }
-void rta_dump(rta *);
-void rta_dump_all(void);
-void rta_show(struct cli *, rta *);
-
-u32 rt_get_igp_metric(rte *rt);
-struct hostentry * rt_get_hostentry(rtable *tab, ip_addr a, ip_addr ll, rtable *dep);
-void rta_apply_hostentry(rta *a, struct hostentry *he, mpls_label_stack *mls);
-
-static inline void
-rta_set_recursive_next_hop(rtable *dep, rta *a, rtable *tab, ip_addr gw, ip_addr ll, mpls_label_stack *mls)
-{
-  rta_apply_hostentry(a, rt_get_hostentry(tab, gw, ll, dep), mls);
-}
-
-/*
- * rta_set_recursive_next_hop() acquires hostentry from hostcache and fills
- * rta->hostentry field.  New hostentry has zero use count. Cached rta locks its
- * hostentry (increases its use count), uncached rta does not lock it. Hostentry
- * with zero use count is removed asynchronously during host cache update,
- * therefore it is safe to hold such hostentry temorarily. Hostentry holds a
- * lock for a 'source' rta, mainly to share multipath nexthops.
- *
- * There is no need to hold a lock for hostentry->dep table, because that table
- * contains routes responsible for that hostentry, and therefore is non-empty if
- * given hostentry has non-zero use count. If the hostentry has zero use count,
- * the entry is removed before dep is referenced.
- *
- * The protocol responsible for routes with recursive next hops should hold a
- * lock for a 'source' table governing that routes (argument tab to
- * rta_set_recursive_next_hop()), because its routes reference hostentries
- * (through rta) related to the governing table. When all such routes are
- * removed, rtas are immediately removed achieving zero uc. Then the 'source'
- * table lock could be immediately released, although hostentries may still
- * exist - they will be freed together with the 'source' table.
- */
-
-static inline void rt_lock_hostentry(struct hostentry *he) { if (he) he->uc++; }
-static inline void rt_unlock_hostentry(struct hostentry *he) { if (he) he->uc--; }
-
-int rt_flowspec_check(rtable *tab_ip, rtable *tab_flow, const net_addr *n, rta *a, int interior);
-
-
-/*
- *	Default protocol preferences
- */
-
-#define DEF_PREF_DIRECT		240	/* Directly connected */
-#define DEF_PREF_STATIC		200	/* Static route */
-#define DEF_PREF_OSPF		150	/* OSPF intra-area, inter-area and type 1 external routes */
-#define DEF_PREF_BABEL		130	/* Babel */
-#define DEF_PREF_RIP		120	/* RIP */
-#define DEF_PREF_BGP		100	/* BGP */
-#define DEF_PREF_RPKI		100	/* RPKI */
-#define DEF_PREF_INHERITED	10	/* Routes inherited from other routing daemons */
-
-/*
- *	Route Origin Authorization
- */
-
-#define ROA_UNKNOWN	0
-#define ROA_VALID	1
-#define ROA_INVALID	2
-
-#endif
diff --git a/nest/rt-attr.c b/nest/rt-attr.c
index de45dfa1..8f4319c5 100644
--- a/nest/rt-attr.c
+++ b/nest/rt-attr.c
@@ -45,7 +45,7 @@
  */
 
 #include "nest/bird.h"
-#include "nest/route.h"
+#include "nest/rt.h"
 #include "nest/protocol.h"
 #include "nest/iface.h"
 #include "nest/cli.h"
@@ -529,25 +529,6 @@ ea_walk(struct ea_walk_state *s, uint id, uint max)
   return NULL;
 }
 
-/**
- * ea_get_int - fetch an integer attribute
- * @e: attribute list
- * @id: attribute ID
- * @def: default value
- *
- * This function is a shortcut for retrieving a value of an integer attribute
- * by calling ea_find() to find the attribute, extracting its value or returning
- * a provided default if no such attribute is present.
- */
-u32
-ea_get_int(ea_list *e, unsigned id, u32 def)
-{
-  eattr *a = ea_find(e, id);
-  if (!a)
-    return def;
-  return a->u.data;
-}
-
 static inline void
 ea_do_sort(ea_list *e)
 {
diff --git a/nest/rt-dev.c b/nest/rt-dev.c
index 05e64fc3..82533321 100644
--- a/nest/rt-dev.c
+++ b/nest/rt-dev.c
@@ -18,7 +18,7 @@
 #include "nest/bird.h"
 #include "nest/iface.h"
 #include "nest/protocol.h"
-#include "nest/route.h"
+#include "nest/rt.h"
 #include "nest/rt-dev.h"
 #include "conf/conf.h"
 #include "lib/resource.h"
diff --git a/nest/rt-fib.c b/nest/rt-fib.c
index 43e3039d..801561da 100644
--- a/nest/rt-fib.c
+++ b/nest/rt-fib.c
@@ -55,7 +55,7 @@
 #undef LOCAL_DEBUG
 
 #include "nest/bird.h"
-#include "nest/route.h"
+#include "nest/rt.h"
 #include "lib/string.h"
 
 /*
diff --git a/nest/rt-show.c b/nest/rt-show.c
index 19877966..464e5f1b 100644
--- a/nest/rt-show.c
+++ b/nest/rt-show.c
@@ -10,7 +10,7 @@
 #undef LOCAL_DEBUG
 
 #include "nest/bird.h"
-#include "nest/route.h"
+#include "nest/rt.h"
 #include "nest/protocol.h"
 #include "nest/cli.h"
 #include "nest/iface.h"
diff --git a/nest/rt-table.c b/nest/rt-table.c
index fbfdb1e6..031e462b 100644
--- a/nest/rt-table.c
+++ b/nest/rt-table.c
@@ -91,7 +91,7 @@
 #undef LOCAL_DEBUG
 
 #include "nest/bird.h"
-#include "nest/route.h"
+#include "nest/rt.h"
 #include "nest/protocol.h"
 #include "nest/iface.h"
 #include "lib/resource.h"
diff --git a/nest/rt.h b/nest/rt.h
new file mode 100644
index 00000000..7451a261
--- /dev/null
+++ b/nest/rt.h
@@ -0,0 +1,343 @@
+/*
+ *	BIRD Internet Routing Daemon -- Routing Table
+ *
+ *	(c) 1998--2000 Martin Mares <mj@ucw.cz>
+ *
+ *	Can be freely distributed and used under the terms of the GNU GPL.
+ */
+
+#ifndef _BIRD_NEST_RT_H_
+#define _BIRD_NEST_RT_H_
+
+#include "lib/lists.h"
+#include "lib/bitmap.h"
+#include "lib/resource.h"
+#include "lib/net.h"
+#include "lib/type.h"
+#include "lib/fib.h"
+#include "lib/route.h"
+
+struct ea_list;
+struct protocol;
+struct proto;
+struct rte_src;
+struct symbol;
+struct timer;
+struct filter;
+struct f_trie;
+struct f_trie_walk_state;
+struct cli;
+
+/*
+ *	Master Routing Tables. Generally speaking, each of them contains a FIB
+ *	with each entry pointing to a list of route entries representing routes
+ *	to given network (with the selected one at the head).
+ *
+ *	Each of the RTE's contains variable data (the preference and protocol-dependent
+ *	metrics) and a pointer to a route attribute block common for many routes).
+ *
+ *	It's guaranteed that there is at most one RTE for every (prefix,proto) pair.
+ */
+
+struct rtable_config {
+  node n;
+  char *name;
+  struct rtable *table;
+  struct proto_config *krt_attached;	/* Kernel syncer attached to this table */
+  uint addr_type;			/* Type of address data stored in table (NET_*) */
+  int gc_max_ops;			/* Maximum number of operations before GC is run */
+  int gc_min_time;			/* Minimum time between two consecutive GC runs */
+  byte sorted;				/* Routes of network are sorted according to rte_better() */
+  byte internal;			/* Internal table of a protocol */
+  byte trie_used;			/* Rtable has attached trie */
+  btime min_settle_time;		/* Minimum settle time for notifications */
+  btime max_settle_time;		/* Maximum settle time for notifications */
+};
+
+typedef struct rtable {
+  resource r;
+  node n;				/* Node in list of all tables */
+  pool *rp;				/* Resource pool to allocate everything from, including itself */
+  struct fib fib;
+  struct f_trie *trie;			/* Trie of prefixes defined in fib */
+  char *name;				/* Name of this table */
+  list channels;			/* List of attached channels (struct channel) */
+  uint addr_type;			/* Type of address data stored in table (NET_*) */
+  int pipe_busy;			/* Pipe loop detection */
+  int use_count;			/* Number of protocols using this table */
+  u32 rt_count;				/* Number of routes in the table */
+
+  byte internal;			/* Internal table of a protocol */
+
+  struct hmap id_map;
+  struct hostcache *hostcache;
+  struct rtable_config *config;		/* Configuration of this table */
+  struct config *deleted;		/* Table doesn't exist in current configuration,
+					 * delete as soon as use_count becomes 0 and remove
+					 * obstacle from this routing table.
+					 */
+  struct event *rt_event;		/* Routing table event */
+  btime last_rt_change;			/* Last time when route changed */
+  btime base_settle_time;		/* Start time of rtable settling interval */
+  btime gc_time;			/* Time of last GC */
+  int gc_counter;			/* Number of operations since last GC */
+  byte prune_state;			/* Table prune state, 1 -> scheduled, 2-> running */
+  byte prune_trie;			/* Prune prefix trie during next table prune */
+  byte hcu_scheduled;			/* Hostcache update is scheduled */
+  byte nhu_state;			/* Next Hop Update state */
+  struct fib_iterator prune_fit;	/* Rtable prune FIB iterator */
+  struct fib_iterator nhu_fit;		/* Next Hop Update FIB iterator */
+  struct f_trie *trie_new;		/* New prefix trie defined during pruning */
+  struct f_trie *trie_old;		/* Old prefix trie waiting to be freed */
+  u32 trie_lock_count;			/* Prefix trie locked by walks */
+  u32 trie_old_lock_count;		/* Old prefix trie locked by walks */
+
+  list subscribers;			/* Subscribers for notifications */
+  struct timer *settle_timer;		/* Settle time for notifications */
+  list flowspec_links;			/* List of flowspec links, src for NET_IPx and dst for NET_FLOWx */
+  struct f_trie *flowspec_trie;		/* Trie for evaluation of flowspec notifications */
+} rtable;
+
+struct rt_subscription {
+  node n;
+  rtable *tab;
+  void (*hook)(struct rt_subscription *b);
+  void *data;
+};
+
+struct rt_flowspec_link {
+  node n;
+  rtable *src;
+  rtable *dst;
+  u32 uc;
+};
+
+#define NHU_CLEAN	0
+#define NHU_SCHEDULED	1
+#define NHU_RUNNING	2
+#define NHU_DIRTY	3
+
+typedef struct network {
+  struct rte *routes;			/* Available routes for this network */
+  struct fib_node n;			/* FIB flags reserved for kernel syncer */
+} net;
+
+struct hostcache {
+  slab *slab;				/* Slab holding all hostentries */
+  struct hostentry **hash_table;	/* Hash table for hostentries */
+  unsigned hash_order, hash_shift;
+  unsigned hash_max, hash_min;
+  unsigned hash_items;
+  linpool *lp;				/* Linpool for trie */
+  struct f_trie *trie;			/* Trie of prefixes that might affect hostentries */
+  list hostentries;			/* List of all hostentries */
+  byte update_hostcache;
+};
+
+struct hostentry {
+  node ln;
+  ip_addr addr;				/* IP address of host, part of key */
+  ip_addr link;				/* (link-local) IP address of host, used as gw
+					   if host is directly attached */
+  struct rtable *tab;			/* Dependent table, part of key */
+  struct hostentry *next;		/* Next in hash chain */
+  unsigned hash_key;			/* Hash key */
+  unsigned uc;				/* Use count */
+  struct rta *src;			/* Source rta entry */
+  byte dest;				/* Chosen route destination type (RTD_...) */
+  byte nexthop_linkable;		/* Nexthop list is completely non-device */
+  u32 igp_metric;			/* Chosen route IGP metric */
+};
+
+/* Types of route announcement, also used as flags */
+#define RA_UNDEF	0		/* Undefined RA type */
+#define RA_OPTIMAL	1		/* Announcement of optimal route change */
+#define RA_ACCEPTED	2		/* Announcement of first accepted route */
+#define RA_ANY		3		/* Announcement of any route change */
+#define RA_MERGED	4		/* Announcement of optimal route merged with next ones */
+
+/* Return value of preexport() callback */
+#define RIC_ACCEPT	1		/* Accepted by protocol */
+#define RIC_PROCESS	0		/* Process it through import filter */
+#define RIC_REJECT	-1		/* Rejected by protocol */
+#define RIC_DROP	-2		/* Silently dropped by protocol */
+
+extern list routing_tables;
+struct config;
+
+void rt_init(void);
+void rt_preconfig(struct config *);
+void rt_commit(struct config *new, struct config *old);
+void rt_lock_table(rtable *);
+void rt_unlock_table(rtable *);
+struct f_trie * rt_lock_trie(rtable *tab);
+void rt_unlock_trie(rtable *tab, struct f_trie *trie);
+void rt_subscribe(rtable *tab, struct rt_subscription *s);
+void rt_unsubscribe(struct rt_subscription *s);
+void rt_flowspec_link(rtable *src, rtable *dst);
+void rt_flowspec_unlink(rtable *src, rtable *dst);
+rtable *rt_setup(pool *, struct rtable_config *);
+static inline void rt_shutdown(rtable *r) { rfree(r->rp); }
+
+static inline net *net_find(rtable *tab, const net_addr *addr) { return (net *) fib_find(&tab->fib, addr); }
+static inline net *net_find_valid(rtable *tab, const net_addr *addr)
+{ net *n = net_find(tab, addr); return (n && rte_is_valid(n->routes)) ? n : NULL; }
+static inline net *net_get(rtable *tab, const net_addr *addr) { return (net *) fib_get(&tab->fib, addr); }
+net *net_get(rtable *tab, const net_addr *addr);
+net *net_route(rtable *tab, const net_addr *n);
+rte *rte_find(net *net, struct rte_src *src);
+rte *rte_get_temp(struct rta *, struct rte_src *src);
+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);
+void rt_refresh_end(rtable *t, struct channel *c);
+void rt_modify_stale(rtable *t, struct channel *c);
+void rt_schedule_prune(rtable *t);
+void rte_dump(rte *);
+void rte_free(rte *);
+rte *rte_do_cow(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 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);
+int rte_update_out(struct channel *c, const net_addr *n, rte *new, rte *old, rte **old_exported, int refeed);
+struct rtable_config *rt_new_table(struct symbol *s, uint addr_type);
+
+static inline int rt_is_ip(rtable *tab)
+{ return (tab->addr_type == NET_IP4) || (tab->addr_type == NET_IP6); }
+
+static inline int rt_is_vpn(rtable *tab)
+{ return (tab->addr_type == NET_VPN4) || (tab->addr_type == NET_VPN6); }
+
+static inline int rt_is_roa(rtable *tab)
+{ return (tab->addr_type == NET_ROA4) || (tab->addr_type == NET_ROA6); }
+
+static inline int rt_is_flow(rtable *tab)
+{ return (tab->addr_type == NET_FLOW4) || (tab->addr_type == NET_FLOW6); }
+
+
+/* Default limit for ECMP next hops, defined in sysdep code */
+extern const int rt_default_ecmp;
+
+struct rt_show_data_rtable {
+  node n;
+  rtable *table;
+  struct channel *export_channel;
+};
+
+struct rt_show_data {
+  net_addr *addr;
+  list tables;
+  struct rt_show_data_rtable *tab;	/* Iterator over table list */
+  struct rt_show_data_rtable *last_table; /* Last table in output */
+  struct fib_iterator fit;		/* Iterator over networks in table */
+  struct f_trie_walk_state *walk_state;	/* Iterator over networks in trie */
+  struct f_trie *walk_lock;		/* Locked trie for walking */
+  int verbose, tables_defined_by;
+  const struct filter *filter;
+  struct proto *show_protocol;
+  struct proto *export_protocol;
+  struct channel *export_channel;
+  struct config *running_on_config;
+  struct krt_proto *kernel;
+  int export_mode, addr_mode, primary_only, filtered, stats;
+
+  int table_open;			/* Iteration (fit) is open */
+  int trie_walk;			/* Current table is iterated using trie */
+  int net_counter, rt_counter, show_counter, table_counter;
+  int net_counter_last, rt_counter_last, show_counter_last;
+};
+
+void rt_show(struct rt_show_data *);
+struct rt_show_data_rtable * rt_show_add_table(struct rt_show_data *d, rtable *t);
+
+/* Value of table definition mode in struct rt_show_data */
+#define RSD_TDB_DEFAULT	  0		/* no table specified */
+#define RSD_TDB_INDIRECT  0		/* show route ... protocol P ... */
+#define RSD_TDB_ALL	  RSD_TDB_SET			/* show route ... table all ... */
+#define RSD_TDB_DIRECT	  RSD_TDB_SET | RSD_TDB_NMN	/* show route ... table X table Y ... */
+
+#define RSD_TDB_SET	  0x1		/* internal: show empty tables */
+#define RSD_TDB_NMN	  0x2		/* internal: need matching net */
+
+/* Value of addr_mode */
+#define RSD_ADDR_EQUAL	1		/* Exact query - show route <addr> */
+#define RSD_ADDR_FOR	2		/* Longest prefix match - show route for <addr> */
+#define RSD_ADDR_IN	3		/* Interval query - show route in <addr> */
+
+/* Value of export_mode in struct rt_show_data */
+#define RSEM_NONE	0		/* Export mode not used */
+#define RSEM_PREEXPORT	1		/* Routes ready for export, before filtering */
+#define RSEM_EXPORT	2		/* Routes accepted by export filter */
+#define RSEM_NOEXPORT	3		/* Routes rejected by export filter */
+#define RSEM_EXPORTED	4		/* Routes marked in export map */
+
+struct hostentry * rt_get_hostentry(rtable *tab, ip_addr a, ip_addr ll, rtable *dep);
+void rta_apply_hostentry(rta *a, struct hostentry *he, mpls_label_stack *mls);
+
+static inline void
+rta_set_recursive_next_hop(rtable *dep, rta *a, rtable *tab, ip_addr gw, ip_addr ll, mpls_label_stack *mls)
+{
+  rta_apply_hostentry(a, rt_get_hostentry(tab, gw, ll, dep), mls);
+}
+
+/*
+ * rta_set_recursive_next_hop() acquires hostentry from hostcache and fills
+ * rta->hostentry field.  New hostentry has zero use count. Cached rta locks its
+ * hostentry (increases its use count), uncached rta does not lock it. Hostentry
+ * with zero use count is removed asynchronously during host cache update,
+ * therefore it is safe to hold such hostentry temorarily. Hostentry holds a
+ * lock for a 'source' rta, mainly to share multipath nexthops.
+ *
+ * There is no need to hold a lock for hostentry->dep table, because that table
+ * contains routes responsible for that hostentry, and therefore is non-empty if
+ * given hostentry has non-zero use count. If the hostentry has zero use count,
+ * the entry is removed before dep is referenced.
+ *
+ * The protocol responsible for routes with recursive next hops should hold a
+ * lock for a 'source' table governing that routes (argument tab to
+ * rta_set_recursive_next_hop()), because its routes reference hostentries
+ * (through rta) related to the governing table. When all such routes are
+ * removed, rtas are immediately removed achieving zero uc. Then the 'source'
+ * table lock could be immediately released, although hostentries may still
+ * exist - they will be freed together with the 'source' table.
+ */
+
+static inline void rt_lock_hostentry(struct hostentry *he) { if (he) he->uc++; }
+static inline void rt_unlock_hostentry(struct hostentry *he) { if (he) he->uc--; }
+
+int rt_flowspec_check(rtable *tab_ip, rtable *tab_flow, const net_addr *n, rta *a, int interior);
+
+
+/*
+ *	Default protocol preferences
+ */
+
+#define DEF_PREF_DIRECT		240	/* Directly connected */
+#define DEF_PREF_STATIC		200	/* Static route */
+#define DEF_PREF_OSPF		150	/* OSPF intra-area, inter-area and type 1 external routes */
+#define DEF_PREF_BABEL		130	/* Babel */
+#define DEF_PREF_RIP		120	/* RIP */
+#define DEF_PREF_BGP		100	/* BGP */
+#define DEF_PREF_RPKI		100	/* RPKI */
+#define DEF_PREF_INHERITED	10	/* Routes inherited from other routing daemons */
+
+/*
+ *	Route Origin Authorization
+ */
+
+#define ROA_UNKNOWN	0
+#define ROA_VALID	1
+#define ROA_INVALID	2
+
+int net_roa_check(rtable *tab, const net_addr *n, u32 asn);
+
+#endif
diff --git a/proto/babel/babel.h b/proto/babel/babel.h
index 8b6da3c8..00814641 100644
--- a/proto/babel/babel.h
+++ b/proto/babel/babel.h
@@ -16,7 +16,7 @@
 #include "nest/bird.h"
 #include "nest/cli.h"
 #include "nest/iface.h"
-#include "nest/route.h"
+#include "nest/rt.h"
 #include "nest/protocol.h"
 #include "nest/locks.h"
 #include "nest/password.h"
diff --git a/proto/bfd/bfd.h b/proto/bfd/bfd.h
index 91fdaa60..bbccd0b8 100644
--- a/proto/bfd/bfd.h
+++ b/proto/bfd/bfd.h
@@ -13,7 +13,7 @@
 #include "nest/cli.h"
 #include "nest/iface.h"
 #include "nest/protocol.h"
-#include "nest/route.h"
+#include "nest/rt.h"
 #include "nest/password.h"
 #include "conf/conf.h"
 #include "lib/hash.h"
diff --git a/proto/bgp/attrs.c b/proto/bgp/attrs.c
index 1bae942d..3265cb5e 100644
--- a/proto/bgp/attrs.c
+++ b/proto/bgp/attrs.c
@@ -15,7 +15,7 @@
 #include "nest/bird.h"
 #include "nest/iface.h"
 #include "nest/protocol.h"
-#include "nest/route.h"
+#include "nest/rt.h"
 #include "nest/attrs.h"
 #include "conf/conf.h"
 #include "lib/resource.h"
diff --git a/proto/bgp/bgp.c b/proto/bgp/bgp.c
index 8c97f7b3..aec78a45 100644
--- a/proto/bgp/bgp.c
+++ b/proto/bgp/bgp.c
@@ -114,7 +114,7 @@
 #include "nest/bird.h"
 #include "nest/iface.h"
 #include "nest/protocol.h"
-#include "nest/route.h"
+#include "nest/rt.h"
 #include "nest/cli.h"
 #include "nest/locks.h"
 #include "conf/conf.h"
diff --git a/proto/bgp/bgp.h b/proto/bgp/bgp.h
index 6f209595..d09a5c8f 100644
--- a/proto/bgp/bgp.h
+++ b/proto/bgp/bgp.h
@@ -14,7 +14,7 @@
 #include <stdint.h>
 #include <setjmp.h>
 #include "nest/bird.h"
-#include "nest/route.h"
+#include "nest/rt.h"
 #include "nest/bfd.h"
 //#include "lib/lists.h"
 #include "lib/hash.h"
diff --git a/proto/bgp/packets.c b/proto/bgp/packets.c
index a805cdf0..5def0f27 100644
--- a/proto/bgp/packets.c
+++ b/proto/bgp/packets.c
@@ -15,7 +15,7 @@
 #include "nest/bird.h"
 #include "nest/iface.h"
 #include "nest/protocol.h"
-#include "nest/route.h"
+#include "nest/rt.h"
 #include "nest/attrs.h"
 #include "proto/mrt/mrt.h"
 #include "conf/conf.h"
diff --git a/proto/mrt/mrt.h b/proto/mrt/mrt.h
index 4ff94c12..3b83aa39 100644
--- a/proto/mrt/mrt.h
+++ b/proto/mrt/mrt.h
@@ -13,7 +13,7 @@
 #include "nest/bird.h"
 #include "nest/protocol.h"
 #include "lib/lists.h"
-#include "nest/route.h"
+#include "nest/rt.h"
 #include "lib/event.h"
 #include "lib/hash.h"
 
diff --git a/proto/ospf/ospf.h b/proto/ospf/ospf.h
index 3e704ae8..3d0d57d9 100644
--- a/proto/ospf/ospf.h
+++ b/proto/ospf/ospf.h
@@ -22,7 +22,7 @@
 #include "lib/resource.h"
 #include "nest/protocol.h"
 #include "nest/iface.h"
-#include "nest/route.h"
+#include "nest/rt.h"
 #include "nest/cli.h"
 #include "nest/locks.h"
 #include "nest/bfd.h"
diff --git a/proto/perf/perf.c b/proto/perf/perf.c
index 5d228045..dde7e473 100644
--- a/proto/perf/perf.c
+++ b/proto/perf/perf.c
@@ -18,7 +18,7 @@
 #include "nest/bird.h"
 #include "nest/iface.h"
 #include "nest/protocol.h"
-#include "nest/route.h"
+#include "nest/rt.h"
 #include "nest/cli.h"
 #include "conf/conf.h"
 #include "filter/filter.h"
diff --git a/proto/pipe/pipe.c b/proto/pipe/pipe.c
index c3457135..483ece67 100644
--- a/proto/pipe/pipe.c
+++ b/proto/pipe/pipe.c
@@ -35,7 +35,7 @@
 #include "nest/bird.h"
 #include "nest/iface.h"
 #include "nest/protocol.h"
-#include "nest/route.h"
+#include "nest/rt.h"
 #include "nest/cli.h"
 #include "conf/conf.h"
 #include "filter/filter.h"
diff --git a/proto/radv/radv.h b/proto/radv/radv.h
index 14d40f8a..5cca3aca 100644
--- a/proto/radv/radv.h
+++ b/proto/radv/radv.h
@@ -19,7 +19,7 @@
 #include "lib/resource.h"
 #include "nest/protocol.h"
 #include "nest/iface.h"
-#include "nest/route.h"
+#include "nest/rt.h"
 #include "nest/cli.h"
 #include "nest/locks.h"
 #include "conf/conf.h"
diff --git a/proto/rip/rip.h b/proto/rip/rip.h
index f8713c4a..a6fa3326 100644
--- a/proto/rip/rip.h
+++ b/proto/rip/rip.h
@@ -16,7 +16,7 @@
 #include "nest/cli.h"
 #include "nest/iface.h"
 #include "nest/protocol.h"
-#include "nest/route.h"
+#include "nest/rt.h"
 #include "nest/password.h"
 #include "nest/locks.h"
 #include "nest/bfd.h"
diff --git a/proto/rpki/rpki.h b/proto/rpki/rpki.h
index 8a5c38fd..26fbb46e 100644
--- a/proto/rpki/rpki.h
+++ b/proto/rpki/rpki.h
@@ -13,7 +13,7 @@
 #define _BIRD_RPKI_H_
 
 #include "nest/bird.h"
-#include "nest/route.h"
+#include "nest/rt.h"
 #include "nest/protocol.h"
 #include "lib/socket.h"
 #include "lib/ip.h"
diff --git a/proto/static/static.c b/proto/static/static.c
index cd31afd3..3a0d9257 100644
--- a/proto/static/static.c
+++ b/proto/static/static.c
@@ -38,7 +38,7 @@
 #include "nest/bird.h"
 #include "nest/iface.h"
 #include "nest/protocol.h"
-#include "nest/route.h"
+#include "nest/rt.h"
 #include "nest/cli.h"
 #include "conf/conf.h"
 #include "filter/filter.h"
diff --git a/proto/static/static.h b/proto/static/static.h
index fc91f71c..d99f7ebd 100644
--- a/proto/static/static.h
+++ b/proto/static/static.h
@@ -9,7 +9,7 @@
 #ifndef _BIRD_STATIC_H_
 #define _BIRD_STATIC_H_
 
-#include "nest/route.h"
+#include "nest/rt.h"
 #include "nest/bfd.h"
 #include "lib/buffer.h"
 
diff --git a/sysdep/bsd/krt-sock.c b/sysdep/bsd/krt-sock.c
index 3b1d2299..cd449d11 100644
--- a/sysdep/bsd/krt-sock.c
+++ b/sysdep/bsd/krt-sock.c
@@ -25,7 +25,7 @@
 
 #include "nest/bird.h"
 #include "nest/iface.h"
-#include "nest/route.h"
+#include "nest/rt.h"
 #include "nest/protocol.h"
 #include "nest/iface.h"
 #include "sysdep/unix/unix.h"
diff --git a/sysdep/linux/netlink.c b/sysdep/linux/netlink.c
index eb4be711..a37692d6 100644
--- a/sysdep/linux/netlink.c
+++ b/sysdep/linux/netlink.c
@@ -17,7 +17,7 @@
 #undef LOCAL_DEBUG
 
 #include "nest/bird.h"
-#include "nest/route.h"
+#include "nest/rt.h"
 #include "nest/protocol.h"
 #include "nest/iface.h"
 #include "lib/alloca.h"
diff --git a/sysdep/unix/krt.c b/sysdep/unix/krt.c
index bfd69b73..671e91fe 100644
--- a/sysdep/unix/krt.c
+++ b/sysdep/unix/krt.c
@@ -53,7 +53,7 @@
 
 #include "nest/bird.h"
 #include "nest/iface.h"
-#include "nest/route.h"
+#include "nest/rt.h"
 #include "nest/protocol.h"
 #include "filter/filter.h"
 #include "conf/conf.h"
diff --git a/sysdep/unix/main.c b/sysdep/unix/main.c
index 71749324..9bb37e5d 100644
--- a/sysdep/unix/main.c
+++ b/sysdep/unix/main.c
@@ -30,7 +30,7 @@
 #include "lib/event.h"
 #include "lib/timer.h"
 #include "lib/string.h"
-#include "nest/route.h"
+#include "nest/rt.h"
 #include "nest/protocol.h"
 #include "nest/iface.h"
 #include "nest/cli.h"
diff --git a/test/bt-utils.c b/test/bt-utils.c
index 8496e185..ce9a49d7 100644
--- a/test/bt-utils.c
+++ b/test/bt-utils.c
@@ -14,7 +14,7 @@
 #include "test/bt-utils.h"
 
 #include "nest/bird.h"
-#include "nest/route.h"
+#include "nest/rt.h"
 #include "nest/protocol.h"
 
 #include "sysdep/unix/unix.h"
-- 
cgit v1.2.3


From 17f91f9e6e70f7e3f29502e854823c0d48571eaa Mon Sep 17 00:00:00 2001
From: Maria Matejka <mq@ucw.cz>
Date: Sat, 19 Mar 2022 16:23:42 +0100
Subject: Explicit definition structures of route attributes

Changes in internal API:

* Every route attribute must be defined as struct ea_class somewhere.
* Registration of route attributes known at startup must be done by
  ea_register_init() from protocol build functions.
* Every attribute has now its symbol registered in a global symbol table
  defined as SYM_ATTRIBUTE
* All attribute ID's are dynamically allocated.
* Attribute value custom formatting hook is defined in the ea_class.
* Attribute names are the same for display and filters, always prefixed
  by protocol name.

Also added some unit testing code for filters with route attributes.
---
 conf/cf-lex.l          |  54 ++++++++-
 conf/conf.h            |   2 +-
 conf/confbase.Y        |   3 +-
 filter/config.Y        |  88 +++++++++-----
 filter/data.h          |  10 +-
 filter/decl.m4         |   4 +-
 filter/f-inst.c        |  20 ++--
 filter/f-inst.h        |  12 +-
 filter/f-util.c        | 128 +-------------------
 filter/filter.h        |   9 --
 filter/test.conf       | 151 +++++++++++++++++++++++-
 lib/event_test.c       |   2 +-
 lib/mempool.c          |   2 -
 lib/resource.c         |  19 +++
 lib/resource.h         |  13 ++-
 lib/route.h            | 108 ++++++++++-------
 nest/config.Y          |   5 +-
 nest/proto.c           |   4 -
 nest/protocol.h        |  26 +----
 nest/rt-attr.c         | 221 ++++++++++++++++++++++++++---------
 nest/rt-dev.c          |   1 -
 nest/rt-table.c        |  10 +-
 proto/babel/babel.c    |  76 ++++++------
 proto/babel/babel.h    |   4 -
 proto/babel/config.Y   |   2 -
 proto/bfd/bfd.c        |   1 -
 proto/bgp/attrs.c      | 308 +++++++++++++++++++++++++------------------------
 proto/bgp/bgp.c        |   3 +-
 proto/bgp/bgp.h        |  54 ++++-----
 proto/bgp/config.Y     |  30 -----
 proto/mrt/mrt.c        |   1 -
 proto/ospf/config.Y    |   5 -
 proto/ospf/ospf.c      |  71 +++++++-----
 proto/ospf/ospf.h      |   7 +-
 proto/ospf/rt.c        |   8 +-
 proto/ospf/topology.c  |   6 +-
 proto/perf/perf.c      |   1 -
 proto/pipe/pipe.c      |   1 -
 proto/radv/config.Y    |   3 -
 proto/radv/radv.c      |  42 ++++---
 proto/radv/radv.h      |   4 -
 proto/rip/config.Y     |   3 -
 proto/rip/rip.c        |  65 ++++++-----
 proto/rip/rip.h        |   4 -
 proto/rpki/rpki.c      |   1 -
 proto/static/static.c  |  11 +-
 sysdep/linux/krt-sys.h |  32 -----
 sysdep/linux/netlink.Y |  45 +++-----
 sysdep/linux/netlink.c | 197 ++++++++++++++++++-------------
 sysdep/unix/krt.Y      |   3 -
 sysdep/unix/krt.c      |  35 +++---
 sysdep/unix/krt.h      |   4 +
 sysdep/unix/main.c     |   2 +-
 test/bt-utils.c        |   5 +-
 54 files changed, 1052 insertions(+), 874 deletions(-)

(limited to 'proto/bfd')

diff --git a/conf/cf-lex.l b/conf/cf-lex.l
index bd424c69..e84e1d9d 100644
--- a/conf/cf-lex.l
+++ b/conf/cf-lex.l
@@ -86,9 +86,12 @@ static uint cf_hash(const byte *c);
 HASH_DEFINE_REHASH_FN(SYM, struct symbol)
 
 HASH(struct keyword) kw_hash;
+HASH(struct ea_class) ea_name_hash;
 
 struct sym_scope *conf_this_scope;
-struct sym_scope *global_root_scope;
+
+static struct sym_scope global_root_scope__init = { .active = 1, };
+struct sym_scope *global_root_scope = &global_root_scope__init;
 
 linpool *cfg_mem;
 
@@ -598,6 +601,25 @@ cf_new_symbol(const byte *c)
   return s;
 }
 
+static struct symbol *
+cf_root_symbol(const byte *c)
+{
+  uint l = strlen(c);
+  if (l > SYM_MAX_LEN)
+    bug("Root symbol %s too long", c);
+
+  struct symbol *s = mb_alloc(&root_pool, sizeof(struct symbol) + l + 1);
+  *s = (struct symbol) { .scope = global_root_scope, .class = SYM_VOID, };
+  memcpy(s->name, c, l+1);
+
+  if (!global_root_scope->hash.data)
+    HASH_INIT(global_root_scope->hash, &root_pool, SYM_ORDER);
+
+  HASH_INSERT2(global_root_scope->hash, SYM, &root_pool, s);
+  return s;
+}
+
+
 /**
  * cf_find_symbol_scope - find a symbol by name
  * @scope: config scope
@@ -652,7 +674,7 @@ cf_localize_symbol(struct symbol *sym)
   /* If the symbol type is void, it has been recently allocated just in this scope. */
   if (!sym->class)
     return sym;
-  
+
   /* If the scope is the current, it is already defined in this scope. */
   if (sym->scope == conf_this_scope)
     cf_error("Symbol already defined");
@@ -716,8 +738,34 @@ cf_lex_init_kh(void)
   struct keyword *k;
   for (k=keyword_list; k->name; k++)
     HASH_INSERT(kw_hash, KW, k);
+}
+
+void
+ea_lex_register(struct ea_class *def)
+{
+  struct symbol *sym = cf_root_symbol(def->name);
+  sym->class = SYM_ATTRIBUTE;
+  sym->attribute = def;
+  def->sym = sym;
+}
 
-  global_root_scope = mb_allocz(&root_pool, sizeof(*global_root_scope));
+void
+ea_lex_unregister(struct ea_class *def)
+{
+  struct symbol *sym = def->sym;
+  HASH_REMOVE2(global_root_scope->hash, SYM, &root_pool, sym);
+  mb_free(sym);
+  def->sym = NULL;
+}
+
+struct ea_class *
+ea_class_find_by_name(const char *name)
+{
+  struct symbol *sym = cf_find_symbol(global_root_scope, name);
+  if (!sym || (sym->class != SYM_ATTRIBUTE))
+    return NULL;
+  else
+    return sym->attribute;
 }
 
 /**
diff --git a/conf/conf.h b/conf/conf.h
index 2700295b..18de8def 100644
--- a/conf/conf.h
+++ b/conf/conf.h
@@ -120,7 +120,7 @@ struct symbol {
     const struct f_line *function;	/* For SYM_FUNCTION */
     const struct filter *filter;	/* For SYM_FILTER */
     struct rtable_config *table;	/* For SYM_TABLE */
-    struct f_dynamic_attr *attribute;	/* For SYM_ATTRIBUTE */
+    struct ea_class *attribute;		/* For SYM_ATTRIBUTE */
     struct f_val *val;			/* For SYM_CONSTANT */
     uint offset;			/* For SYM_VARIABLE */
   };
diff --git a/conf/confbase.Y b/conf/confbase.Y
index a81560dc..2286b257 100644
--- a/conf/confbase.Y
+++ b/conf/confbase.Y
@@ -71,8 +71,9 @@ CF_DECLS
   } xp;
   enum filter_return fret;
   enum ec_subtype ecs;
-  struct f_dynamic_attr fda;
+  struct ea_class *ea_class;
   struct f_static_attr fsa;
+  struct f_attr_bit fab;
   struct f_lval flv;
   struct f_line *fl;
   const struct filter *f;
diff --git a/filter/config.Y b/filter/config.Y
index 92656f7c..f21f1c8e 100644
--- a/filter/config.Y
+++ b/filter/config.Y
@@ -22,6 +22,13 @@ static inline u32 pair_b(u32 p) { return p & 0xFFFF; }
 #define f_generate_complex(fi_code, da, arg) \
   f_new_inst(FI_EA_SET, f_new_inst(fi_code, f_new_inst(FI_EA_GET, da), arg), da)
 
+#define f_generate_complex_sym(fi_code, sym, arg) ({ \
+  if (sym->class != SYM_ATTRIBUTE) \
+    cf_error("Can't empty %s: not an attribute", sym->name); \
+  f_generate_complex(fi_code, sym->attribute, arg); \
+})
+  
+
 /*
  * Sets and their items are during parsing handled as lists, linked
  * through left ptr. The first item in a list also contains a pointer
@@ -161,27 +168,31 @@ f_new_lc_item(u32 f1, u32 t1, u32 f2, u32 t2, u32 f3, u32 t3)
 }
 
 static inline struct f_inst *
-f_generate_empty(struct f_dynamic_attr dyn)
+f_generate_empty(const struct symbol *sym)
 {
-  const struct f_val *empty = f_get_empty(dyn.type);
+  if (sym->class != SYM_ATTRIBUTE)
+    cf_error("Can't empty %s: not an attribute", sym->name);
+
+  const struct ea_class *def = sym->attribute;
+  const struct f_val *empty = f_get_empty(def->type);
   if (!empty)
-    cf_error("Can't empty that attribute");
+    cf_error("Can't empty attribute %s", def->name);
 
-  return f_new_inst(FI_EA_SET, f_new_inst(FI_CONSTANT, *empty), dyn);
+  return f_new_inst(FI_EA_SET, f_new_inst(FI_CONSTANT, *empty), def);
 }
 
-#define BA_AS_PATH 0x02
-
 static inline struct f_inst *
 f_implicit_roa_check(struct rtable_config *tab)
 {
-  struct f_dynamic_attr fda = f_new_dynamic_attr(T_PATH, EA_CODE(PROTOCOL_BGP, BA_AS_PATH));
+  const struct ea_class *def = ea_class_find("bgp_path");
+  if (!def)
+    cf_error("Fatal: Couldn't find BGP path attribute definition.");
 
   struct f_static_attr fsa = f_new_static_attr(T_NET, SA_NET, 1);
 
   return f_new_inst(FI_ROA_CHECK,
 	    f_new_inst(FI_RTA_GET, fsa),
-	    f_new_inst(FI_AS_PATH_LAST, f_new_inst(FI_EA_GET, fda)),
+	    f_new_inst(FI_AS_PATH_LAST, f_new_inst(FI_EA_GET, def)),
 	    tab);
 }
 
@@ -293,8 +304,8 @@ CF_KEYWORDS(FUNCTION, PRINT, PRINTN, UNSET, RETURN,
 
 %type <xp> cmds_int cmd_prep
 %type <x> term block cmd cmds constant constructor print_list var_list function_call symbol_value bgp_path_expr bgp_path bgp_path_tail
-%type <fda> dynamic_attr attr_bit
 %type <fsa> static_attr
+%type <fab> attr_bit
 %type <f> filter where_filter
 %type <fl> filter_body function_body
 %type <flv> lvalue
@@ -335,7 +346,14 @@ filter_eval:
 
 conf: custom_attr ;
 custom_attr: ATTRIBUTE type symbol ';' {
-  cf_define_symbol($3, SYM_ATTRIBUTE, attribute, ca_lookup(new_config->pool, $3->name, $2)->fda);
+  if (($3->class == SYM_ATTRIBUTE) && ($3->scope == new_config->root_scope))
+    cf_error("Duplicate attribute %s definition", $3->name);
+
+  cf_define_symbol($3, SYM_ATTRIBUTE, attribute,
+      ea_register_alloc(new_config->pool, (struct ea_class) {
+	.name = $3->name,
+	.type = $2,
+	})->class);
 };
 
 conf: bt_test_suite ;
@@ -736,7 +754,7 @@ symbol_value: CF_SYM_KNOWN
 	$$ = f_new_inst(FI_VAR_GET, $1);
 	break;
       case SYM_ATTRIBUTE:
-	$$ = f_new_inst(FI_EA_GET, *$1->attribute);
+	$$ = f_new_inst(FI_EA_GET, $1->attribute);
 	break;
       default:
 	cf_error("Can't get value of symbol %s", $1->name);
@@ -785,11 +803,9 @@ term:
  | constructor { $$ = $1; }
 
  | static_attr { $$ = f_new_inst(FI_RTA_GET, $1); }
-
- | dynamic_attr { $$ = f_new_inst(FI_EA_GET, $1); }
  | attr_bit {
     struct f_inst *c = f_new_inst(FI_CONSTANT, (struct f_val) { .type = T_INT, .val.i = (1U << $1.bit)});
-    $$ = f_new_inst(FI_EQ, c, f_new_inst(FI_BITAND, f_new_inst(FI_EA_GET, $1), c));
+    $$ = f_new_inst(FI_EQ, c, f_new_inst(FI_BITAND, f_new_inst(FI_EA_GET, $1.class), c));
   }
 
  | term '.' IS_V4 { $$ = f_new_inst(FI_IS_V4, $1); }
@@ -833,8 +849,6 @@ term:
 
  | FORMAT '(' term ')' {  $$ = f_new_inst(FI_FORMAT, $3); }
 
-/* | term '.' LEN { $$->code = P('P','l'); } */
-
  | function_call
  ;
 
@@ -867,7 +881,9 @@ cmd:
 	 $$ = f_new_inst(FI_VAR_SET, $3, $1);
 	 break;
        case SYM_ATTRIBUTE:
-	 $$ = f_new_inst(FI_EA_SET, $3, *$1->attribute);
+	 if ($1->attribute->readonly)
+	   cf_error("Attribute %s is read-only", $1->attribute->name);
+	 $$ = f_new_inst(FI_EA_SET, $3, $1->attribute);
 	 break;
        default:
 	 cf_error("Can't assign to symbol %s", $1->name);
@@ -877,22 +893,23 @@ cmd:
      DBG( "Ook, we'll return the value\n" );
      $$ = f_new_inst(FI_RETURN, $2);
    }
- | dynamic_attr '=' term ';' {
-     $$ = f_new_inst(FI_EA_SET, $3, $1);
-   }
  | static_attr '=' term ';' {
      if ($1.readonly)
        cf_error( "This static attribute is read-only.");
      $$ = f_new_inst(FI_RTA_SET, $3, $1);
    }
- | UNSET '(' dynamic_attr ')' ';' {
-     $$ = f_new_inst(FI_EA_UNSET, $3);
+ | UNSET '(' CF_SYM_KNOWN ')' ';' {
+     if ($3->class != SYM_ATTRIBUTE)
+       cf_error("Can't unset %s", $3->name);
+     if ($3->attribute->readonly)
+       cf_error("Attribute %s is read-only", $3->attribute->name);
+     $$ = f_new_inst(FI_EA_UNSET, $3->attribute);
    }
  | attr_bit '=' term ';' {
      $$ = f_new_inst(FI_CONDITION, $3,
-	f_generate_complex(FI_BITOR, $1,
+	f_generate_complex(FI_BITOR, $1.class,
 	      f_new_inst(FI_CONSTANT, (struct f_val) { .type = T_INT, .val.i = (1U << $1.bit)})),
-	f_generate_complex(FI_BITAND, $1,
+	f_generate_complex(FI_BITAND, $1.class,
 	      f_new_inst(FI_CONSTANT, (struct f_val) { .type = T_INT, .val.i = ~(1U << $1.bit)}))
      );
    }
@@ -919,11 +936,11 @@ cmd:
       $$ = f_new_inst(FI_SWITCH, $2, build_tree($4));
    }
 
- | dynamic_attr '.' EMPTY ';' { $$ = f_generate_empty($1); }
- | dynamic_attr '.' PREPEND '(' term ')' ';'   { $$ = f_generate_complex( FI_PATH_PREPEND, $1, $5 ); }
- | dynamic_attr '.' ADD '(' term ')' ';'       { $$ = f_generate_complex( FI_CLIST_ADD, $1, $5 ); }
- | dynamic_attr '.' DELETE '(' term ')' ';'    { $$ = f_generate_complex( FI_CLIST_DEL, $1, $5 ); }
- | dynamic_attr '.' FILTER '(' term ')' ';'    { $$ = f_generate_complex( FI_CLIST_FILTER, $1, $5 ); }
+ | CF_SYM_KNOWN '.' EMPTY ';' { $$ = f_generate_empty($1); }
+ | CF_SYM_KNOWN '.' PREPEND '(' term ')' ';'   { $$ = f_generate_complex_sym( FI_PATH_PREPEND, $1, $5 ); }
+ | CF_SYM_KNOWN '.' ADD '(' term ')' ';'       { $$ = f_generate_complex_sym( FI_CLIST_ADD, $1, $5 ); }
+ | CF_SYM_KNOWN '.' DELETE '(' term ')' ';'    { $$ = f_generate_complex_sym( FI_CLIST_DEL, $1, $5 ); }
+ | CF_SYM_KNOWN '.' FILTER '(' term ')' ';'    { $$ = f_generate_complex_sym( FI_CLIST_FILTER, $1, $5 ); }
  | BT_ASSERT '(' get_cf_position term get_cf_position ')' ';' { $$ = assert_done($4, $3 + 1, $5 - 1); }
  | BT_CHECK_ASSIGN '(' get_cf_position lvalue get_cf_position ',' term ')' ';' { $$ = assert_assign(&$4, $7, $3 + 1, $5 - 1); }
  ;
@@ -934,8 +951,17 @@ get_cf_position:
 };
 
 lvalue:
-   CF_SYM_KNOWN { cf_assert_symbol($1, SYM_VARIABLE); $$ = (struct f_lval) { .type = F_LVAL_VARIABLE, .sym = $1 }; }
+   CF_SYM_KNOWN {
+      switch ($1->class) {
+	case SYM_VARIABLE_RANGE:
+	  $$ = (struct f_lval) { .type = F_LVAL_VARIABLE, .sym = $1 };
+	  break;
+	case SYM_ATTRIBUTE:
+	  $$ = (struct f_lval) { .type = F_LVAL_EA, .da = $1->attribute };
+	  break;
+      }
+  }
  | static_attr { $$ = (struct f_lval) { .type = F_LVAL_SA, .sa = $1 }; }
- | dynamic_attr { $$ = (struct f_lval) { .type = F_LVAL_EA, .da = $1 }; };
+ ;
 
 CF_END
diff --git a/filter/data.h b/filter/data.h
index cba47d6a..4d2622ab 100644
--- a/filter/data.h
+++ b/filter/data.h
@@ -21,13 +21,6 @@ struct f_val {
 
 #define fputip(a)   ({ ip_addr *ax = falloc(sizeof(*ax)); *ax = (a); ax; })
 
-/* Dynamic attribute definition (eattrs) */
-struct f_dynamic_attr {
-  btype type;		/* EA type (EAF_*) */
-  u8 bit;		/* For bitfield accessors */
-  uint ea_code;		/* EA code */
-};
-
 enum f_sa_code {
   SA_FROM = 1,
   SA_GW,
@@ -53,7 +46,6 @@ struct f_static_attr {
 /* Filter l-value type */
 enum f_lval_type {
   F_LVAL_VARIABLE,
-  F_LVAL_PREFERENCE,
   F_LVAL_SA,
   F_LVAL_EA,
 };
@@ -63,7 +55,7 @@ struct f_lval {
   enum f_lval_type type;
   union {
     struct symbol *sym;
-    struct f_dynamic_attr da;
+    const struct ea_class *da;
     struct f_static_attr sa;
   };
 };
diff --git a/filter/decl.m4 b/filter/decl.m4
index 2e4fb235..c59cd7f3 100644
--- a/filter/decl.m4
+++ b/filter/decl.m4
@@ -94,7 +94,7 @@ FID_DUMP_BODY()m4_dnl
 debug("%s" $4 "\n", INDENT, $5);
 ]])
 FID_INTERPRET_EXEC()m4_dnl
-const $1 $2 = whati->$2
+$1 $2 = whati->$2
 FID_INTERPRET_BODY')
 
 #	Instruction arguments are needed only until linearization is done.
@@ -256,7 +256,7 @@ FID_INTERPRET_BODY()')
 m4_define(SYMBOL, `FID_MEMBER(struct symbol *, sym, [[strcmp(f1->sym->name, f2->sym->name) || (f1->sym->class != f2->sym->class)]], "symbol %s", item->sym->name)')
 m4_define(RTC, `FID_MEMBER(struct rtable_config *, rtc, [[strcmp(f1->rtc->name, f2->rtc->name)]], "route table %s", item->rtc->name)')
 m4_define(STATIC_ATTR, `FID_MEMBER(struct f_static_attr, sa, f1->sa.sa_code != f2->sa.sa_code,,)')
-m4_define(DYNAMIC_ATTR, `FID_MEMBER(struct f_dynamic_attr, da, f1->da.ea_code != f2->da.ea_code,,)')
+m4_define(DYNAMIC_ATTR, `FID_MEMBER(const struct ea_class *, da, f1->da != f2->da,,)')
 m4_define(ACCESS_RTE, `FID_HIC(,[[do { if (!fs->rte) runtime("No route to access"); } while (0)]],NEVER_CONSTANT())')
 
 #	2) Code wrapping
diff --git a/filter/f-inst.c b/filter/f-inst.c
index 7b34ef91..c5947955 100644
--- a/filter/f-inst.c
+++ b/filter/f-inst.c
@@ -662,14 +662,14 @@
     DYNAMIC_ATTR;
     ACCESS_RTE;
     ACCESS_EATTRS;
-    RESULT_TYPE(da.type);
+    RESULT_TYPE(da->type);
     {
       const struct f_val *empty;
-      eattr *e = ea_find(*fs->eattrs, da.ea_code);
+      const eattr *e = ea_find(*fs->eattrs, da->id);
 
       if (e)
       {
-	ASSERT_DIE(e->type == da.type);
+	ASSERT_DIE(e->type == da->type);
 
 	switch (e->type) {
 	  case T_IP:
@@ -682,7 +682,7 @@
 		}]]);
 	}
       }
-      else if (empty = f_get_empty(da.type))
+      else if (empty = f_get_empty(da->type))
 	RESULT_VAL(*empty);
       else
 	RESULT_VOID;
@@ -694,16 +694,16 @@
     ACCESS_EATTRS;
     ARG_ANY(1);
     DYNAMIC_ATTR;
-    ARG_TYPE(1, da.type);
+    ARG_TYPE(1, da->type);
     {
       struct eattr *a;
 
-      if (da.type >= EAF_TYPE__MAX)
+      if (da->type >= EAF_TYPE__MAX)
 	bug("Unsupported attribute type");
 
       f_rta_cow(fs);
 
-      switch (da.type) {
+      switch (da->type) {
       case T_OPAQUE:
       case T_IFACE:
 	runtime( "Setting opaque attribute is not allowed" );
@@ -711,12 +711,12 @@
 
       case T_IP:
 	a = ea_set_attr(fs->eattrs,
-	    EA_LITERAL_STORE_ADATA(da.ea_code, da.type, 0, &v1.val.ip, sizeof(ip_addr)));
+	    EA_LITERAL_STORE_ADATA(da, 0, &v1.val.ip, sizeof(ip_addr)));
 	break;
 
       default:
 	a = ea_set_attr(fs->eattrs,
-	    EA_LITERAL_GENERIC(da.ea_code, da.type, 0, .u = v1.val.bval));
+	    EA_LITERAL_GENERIC(da->id, da->type, 0, .u = v1.val.bval));
 	break;
       }
 
@@ -731,7 +731,7 @@
     ACCESS_EATTRS;
 
     f_rta_cow(fs);
-    ea_unset_attr(fs->eattrs, 1, da.ea_code);
+    ea_unset_attr(fs->eattrs, 1, da);
   }
 
   INST(FI_LENGTH, 1, 1) {	/* Get length of */
diff --git a/filter/f-inst.h b/filter/f-inst.h
index 32da4653..047a66c9 100644
--- a/filter/f-inst.h
+++ b/filter/f-inst.h
@@ -87,15 +87,17 @@ void f_add_lines(const struct f_line_item *what, struct filter_iterator *fit);
 
 
 struct filter *f_new_where(struct f_inst *);
-static inline struct f_dynamic_attr f_new_dynamic_attr(u8 type, uint code)
-{ return (struct f_dynamic_attr) { .type = type, .ea_code = code }; }
-static inline struct f_dynamic_attr f_new_dynamic_attr_bit(u8 bit, uint code)
-{ return (struct f_dynamic_attr) { .type = T_INT, .bit = bit, .ea_code = code }; }
 static inline struct f_static_attr f_new_static_attr(btype type, int code, int readonly)
 { return (struct f_static_attr) { .type = type, .sa_code = code, .readonly = readonly }; }
-struct f_inst *f_generate_complex(enum f_instruction_code fi_code, struct f_dynamic_attr da, struct f_inst *argument);
 struct f_inst *f_generate_roa_check(struct rtable_config *table, struct f_inst *prefix, struct f_inst *asn);
 
+struct f_attr_bit {
+  const struct ea_class *class;
+  uint bit;
+};
+
+#define f_new_dynamic_attr_bit(_bit, _name)  ((struct f_attr_bit) { .bit = _bit, .class = ea_class_find(_name) })
+
 /* Hook for call bt_assert() function in configuration */
 extern void (*bt_assert_hook)(int result, const struct f_line_item *assert);
 
diff --git a/filter/f-util.c b/filter/f-util.c
index 83ae01f6..fb93ee80 100644
--- a/filter/f-util.c
+++ b/filter/f-util.c
@@ -2,7 +2,7 @@
  *	Filters: utility functions
  *
  *	Copyright 1998 Pavel Machek <pavel@ucw.cz>
- *		  2017 Jan Maria Matejka <mq@ucw.cz>
+ *		  2017 Maria Matejka <mq@ucw.cz>
  *
  *	Can be freely distributed and used under the terms of the GNU GPL.
  */
@@ -40,129 +40,3 @@ struct filter *f_new_where(struct f_inst *where)
   f->root = f_linearize(cond);
   return f;
 }
-
-#define CA_KEY(n)	n->name, n->fda.type
-#define CA_NEXT(n)	n->next
-#define CA_EQ(na,ta,nb,tb)	(!strcmp(na,nb) && (ta == tb))
-#define CA_FN(n,t)	(mem_hash(n, strlen(n)) ^ (t*0xaae99453U))
-#define CA_ORDER	8 /* Fixed */
-
-struct ca_storage {
-  struct ca_storage *next;
-  struct f_dynamic_attr fda;
-  u32 uc;
-  char name[0];
-};
-
-HASH(struct ca_storage) ca_hash;
-
-static struct idm ca_idm;
-static struct ca_storage **ca_storage;
-static uint ca_storage_max;
-
-static void
-ca_free(resource *r)
-{
-  struct custom_attribute *ca = (void *) r;
-  struct ca_storage *cas = HASH_FIND(ca_hash, CA, ca->name, ca->fda->type);
-  ASSERT(cas);
-
-  ca->name = NULL;
-  ca->fda = NULL;
-  if (!--cas->uc) {
-    uint id = EA_CUSTOM_ID(cas->fda.ea_code);
-    idm_free(&ca_idm, id);
-    HASH_REMOVE(ca_hash, CA, cas);
-    ca_storage[id] = NULL;
-    mb_free(cas);
-  }
-}
-
-static void
-ca_dump(resource *r)
-{
-  struct custom_attribute *ca = (void *) r;
-  debug("name \"%s\" id 0x%04x ea_type 0x%02x\n",
-      ca->name, ca->fda->ea_code, ca->fda->type);
-}
-
-static struct resclass ca_class = {
-  .name = "Custom attribute",
-  .size = sizeof(struct custom_attribute),
-  .free = ca_free,
-  .dump = ca_dump,
-  .lookup = NULL,
-  .memsize = NULL,
-};
-
-struct custom_attribute *
-ca_lookup(pool *p, const char *name, btype type)
-{
-  switch (type) {
-    case T_INT:
-    case T_IP:
-    case T_QUAD:
-    case T_PATH:
-    case T_CLIST:
-    case T_ECLIST:
-    case T_LCLIST:
-      break;
-    default:
-      cf_error("Custom route attribute of unsupported type");
-  }
-
-  static int inited = 0;
-  if (!inited) {
-    idm_init(&ca_idm, &root_pool, 8);
-    HASH_INIT(ca_hash, &root_pool, CA_ORDER);
-
-    ca_storage_max = 256;
-    ca_storage = mb_allocz(&root_pool, sizeof(struct ca_storage *) * ca_storage_max);
-
-    inited++;
-  }
-
-  struct ca_storage *cas = HASH_FIND(ca_hash, CA, name, type);
-  if (cas) {
-    cas->uc++;
-  } else {
-
-    uint id = idm_alloc(&ca_idm);
-
-    if (id >= EA_CUSTOM_BIT)
-      cf_error("Too many custom attributes.");
-
-    if (id >= ca_storage_max) {
-      ca_storage_max *= 2;
-      ca_storage = mb_realloc(ca_storage, sizeof(struct ca_storage *) * ca_storage_max * 2);
-    }
-
-    cas = mb_allocz(&root_pool, sizeof(struct ca_storage) + strlen(name) + 1);
-    cas->fda = f_new_dynamic_attr(type, EA_CUSTOM(id));
-    cas->uc = 1;
-
-    strcpy(cas->name, name);
-    ca_storage[id] = cas;
-
-    HASH_INSERT(ca_hash, CA, cas);
-  }
-
-  struct custom_attribute *ca = ralloc(p, &ca_class);
-  ca->fda = &(cas->fda);
-  ca->name = cas->name;
-  return ca;
-}
-
-const char *
-ea_custom_name(uint ea)
-{
-  uint id = EA_CUSTOM_ID(ea);
-  if (id >= ca_storage_max)
-    return NULL;
-
-  if (!ca_storage[id])
-    return NULL;
-
-  return ca_storage[id]->name;
-}
-
diff --git a/filter/filter.h b/filter/filter.h
index 43c04443..0273ef15 100644
--- a/filter/filter.h
+++ b/filter/filter.h
@@ -70,13 +70,4 @@ void filters_dump_all(void);
 
 #define FF_SILENT 2			/* Silent filter execution */
 
-/* Custom route attributes */
-struct custom_attribute {
-  resource r;
-  struct f_dynamic_attr *fda;
-  const char *name;
-};
-
-struct custom_attribute *ca_lookup(pool *p, const char *name, btype type);
-
 #endif
diff --git a/filter/test.conf b/filter/test.conf
index 062756b1..21e7330f 100644
--- a/filter/test.conf
+++ b/filter/test.conf
@@ -9,7 +9,109 @@ router id 62.168.0.1;
 /* We have to setup any protocol */
 protocol device { }
 
-
+/* Setting some custom attributes, enough to force BIRD to reallocate the attribute idmap */
+attribute int test_ca_int1;
+attribute int test_ca_int2;
+attribute int test_ca_int3;
+attribute int test_ca_int4;
+attribute int test_ca_int5;
+attribute int test_ca_int6;
+attribute int test_ca_int7;
+attribute int test_ca_int8;
+attribute int test_ca_int9;
+attribute int test_ca_int10;
+
+attribute ip test_ca_ip1;
+attribute ip test_ca_ip2;
+attribute ip test_ca_ip3;
+attribute ip test_ca_ip4;
+attribute ip test_ca_ip5;
+attribute ip test_ca_ip6;
+attribute ip test_ca_ip7;
+attribute ip test_ca_ip8;
+attribute ip test_ca_ip9;
+attribute ip test_ca_ip10;
+
+attribute quad test_ca_quad1;
+attribute quad test_ca_quad2;
+attribute quad test_ca_quad3;
+attribute quad test_ca_quad4;
+attribute quad test_ca_quad5;
+attribute quad test_ca_quad6;
+attribute quad test_ca_quad7;
+attribute quad test_ca_quad8;
+attribute quad test_ca_quad9;
+attribute quad test_ca_quad10;
+
+attribute bgppath test_ca_bgppath1;
+attribute bgppath test_ca_bgppath2;
+attribute bgppath test_ca_bgppath3;
+attribute bgppath test_ca_bgppath4;
+attribute bgppath test_ca_bgppath5;
+attribute bgppath test_ca_bgppath6;
+attribute bgppath test_ca_bgppath7;
+attribute bgppath test_ca_bgppath8;
+attribute bgppath test_ca_bgppath9;
+attribute bgppath test_ca_bgppath10;
+
+attribute clist test_ca_clist1;
+attribute clist test_ca_clist2;
+attribute clist test_ca_clist3;
+attribute clist test_ca_clist4;
+attribute clist test_ca_clist5;
+attribute clist test_ca_clist6;
+attribute clist test_ca_clist7;
+attribute clist test_ca_clist8;
+attribute clist test_ca_clist9;
+attribute clist test_ca_clist10;
+
+attribute eclist test_ca_eclist1;
+attribute eclist test_ca_eclist2;
+attribute eclist test_ca_eclist3;
+attribute eclist test_ca_eclist4;
+attribute eclist test_ca_eclist5;
+attribute eclist test_ca_eclist6;
+attribute eclist test_ca_eclist7;
+attribute eclist test_ca_eclist8;
+attribute eclist test_ca_eclist9;
+attribute eclist test_ca_eclist10;
+
+attribute lclist test_ca_lclist1;
+attribute lclist test_ca_lclist2;
+attribute lclist test_ca_lclist3;
+attribute lclist test_ca_lclist4;
+attribute lclist test_ca_lclist5;
+attribute lclist test_ca_lclist6;
+attribute lclist test_ca_lclist7;
+attribute lclist test_ca_lclist8;
+attribute lclist test_ca_lclist9;
+attribute lclist test_ca_lclist10;
+
+attribute lclist test_ca_lclist_max1;
+attribute lclist test_ca_lclist_max2;
+attribute lclist test_ca_lclist_max3;
+attribute lclist test_ca_lclist_max4;
+attribute lclist test_ca_lclist_max5;
+attribute lclist test_ca_lclist_max6;
+attribute lclist test_ca_lclist_max7;
+attribute lclist test_ca_lclist_max8;
+attribute lclist test_ca_lclist_max9;
+attribute lclist test_ca_lclist_max10;
+attribute lclist test_ca_lclist_max11;
+attribute lclist test_ca_lclist_max12;
+attribute lclist test_ca_lclist_max13;
+attribute lclist test_ca_lclist_max14;
+attribute lclist test_ca_lclist_max15;
+attribute lclist test_ca_lclist_max16;
+attribute lclist test_ca_lclist_max17;
+attribute lclist test_ca_lclist_max18;
+attribute lclist test_ca_lclist_max19;
+attribute lclist test_ca_lclist_max20;
+attribute lclist test_ca_lclist_max21;
+
+
+/* Uncomment this to get an error */
+#attribute int bgp_path;
 
 /*
  * 	Common definitions and functions
@@ -1331,6 +1433,7 @@ function __test2()
 
 filter testf
 int j;
+bool t;
 {
 	print "Heya, filtering route to ", net.ip, " prefixlen ", net.len, " source ", source;
 	print "This route was from ", from;
@@ -1342,6 +1445,52 @@ int j;
 	rip_metric = 14;
 	unset(rip_metric);
 
+	test_ca_int1 = 42;
+	test_ca_ip2 = 1.3.5.7;
+	test_ca_quad3 = 2.4.6.8;
+	test_ca_bgppath4 = +empty+;
+	test_ca_clist5 = -empty-;
+	test_ca_eclist6 = --empty--;
+	test_ca_lclist7 = ---empty---;
+
+	igp_metric = 53;
+	babel_metric = 64;
+	t = defined(babel_router_id);
+	j = babel_seqno;
+
+	bgp_origin = ORIGIN_IGP;
+	bgp_path = +empty+;
+	bgp_next_hop = 3456:789a:bcde:f012::3456:789a;
+	bgp_med = 71;
+	bgp_local_pref = 942;
+	t = defined(bgp_atomic_aggr);
+	t = defined(bgp_aggregator);
+	bgp_community = -empty-;
+	bgp_originator_id = 9.7.5.3;
+	bgp_cluster_list = -empty-;
+	t = defined(bgp_mp_reach_nlri);
+	t = defined(bgp_mp_unreach_nlri);
+	bgp_ext_community = --empty--;
+	bgp_as4_path = +empty+;
+	t = defined(bgp_as4_aggregator);
+	t = defined(bgp_aigp);
+	bgp_large_community = ---empty---;
+	t = defined(bgp_mpls_label_stack);
+
+	ospf_metric1 = 64;
+	ospf_metric2 = 111;
+	ospf_tag = 654432;
+
+	radv_preference = RA_PREF_LOW;
+	radv_lifetime = 28;
+
+	rip_metric = 2;
+	rip_tag = 4;
+	t = defined(rip_from);
+
+	krt_source = 17;
+	krt_metric = 19;
+
 #	krt_lock_mtu = false;
 #	krt_lock_window = true;
 #	krt_lock_rtt = krt_lock_rttvar && krt_lock_sstresh || krt_lock_cwnd;
diff --git a/lib/event_test.c b/lib/event_test.c
index e14d0b95..3070327d 100644
--- a/lib/event_test.c
+++ b/lib/event_test.c
@@ -55,8 +55,8 @@ t_ev_run_list(void)
 
   olock_init();
   timer_init();
-  io_init();
   rt_init();
+  io_init();
   if_init();
 //  roa_init();
   config_init();
diff --git a/lib/mempool.c b/lib/mempool.c
index 325b1ecf..33eaec86 100644
--- a/lib/mempool.c
+++ b/lib/mempool.c
@@ -41,8 +41,6 @@ struct linpool {
   uint total, total_large;
 };
 
-_Thread_local linpool *tmp_linpool;
-
 static void lp_free(resource *);
 static void lp_dump(resource *);
 static resource *lp_lookup(resource *, unsigned long);
diff --git a/lib/resource.c b/lib/resource.c
index 89e559b4..c31d9889 100644
--- a/lib/resource.c
+++ b/lib/resource.c
@@ -292,6 +292,25 @@ resource_init(void)
   tmp_init(&root_pool);
 }
 
+_Thread_local struct tmp_resources tmp_res;
+
+void
+tmp_init(pool *p)
+{
+  tmp_res.lp = lp_new_default(p);
+  tmp_res.parent = p;
+  tmp_res.pool = rp_new(p, "TMP");
+}
+
+void
+tmp_flush(void)
+{
+  lp_flush(tmp_linpool);
+  rfree(tmp_res.pool);
+  tmp_res.pool = rp_new(tmp_res.parent, "TMP");
+}
+
+
 /**
  * DOC: Memory blocks
  *
diff --git a/lib/resource.h b/lib/resource.h
index a4e110a5..4cedbf00 100644
--- a/lib/resource.h
+++ b/lib/resource.h
@@ -80,14 +80,21 @@ void lp_flush(linpool *);			/* Free everything, but leave linpool */
 void lp_save(linpool *m, lp_state *p);		/* Save state */
 void lp_restore(linpool *m, lp_state *p);	/* Restore state */
 
-extern _Thread_local linpool *tmp_linpool;	/* Temporary linpool autoflushed regularily */
+struct tmp_resources {
+  pool *pool, *parent;
+  linpool *lp;
+};
+
+extern _Thread_local struct tmp_resources tmp_res;
 
+#define tmp_linpool	tmp_res.lp
 #define tmp_alloc(sz)	lp_alloc(tmp_linpool, sz)
 #define tmp_allocu(sz)	lp_allocu(tmp_linpool, sz)
 #define tmp_allocz(sz)	lp_allocz(tmp_linpool, sz)
 
-#define tmp_init(p)	tmp_linpool = lp_new_default(p)
-#define tmp_flush()	lp_flush(tmp_linpool)
+void tmp_init(pool *p);
+void tmp_flush(void);
+
 
 #define lp_new_default	lp_new
 
diff --git a/lib/route.h b/lib/route.h
index ad3f3fb7..f24fd555 100644
--- a/lib/route.h
+++ b/lib/route.h
@@ -150,19 +150,7 @@ typedef struct eattr {
 } eattr;
 
 
-#define EA_CODE(proto,id) (((proto) << 8) | (id))
-#define EA_ID(ea) ((ea) & 0xff)
-#define EA_PROTO(ea) ((ea) >> 8)
-#define EA_CUSTOM(id) ((id) | EA_CUSTOM_BIT)
-#define EA_IS_CUSTOM(ea) ((ea) & EA_CUSTOM_BIT)
-#define EA_CUSTOM_ID(ea) ((ea) & ~EA_CUSTOM_BIT)
-
-const char *ea_custom_name(uint ea);
-
-#define EA_GEN_IGP_METRIC EA_CODE(PROTOCOL_NONE, 0)
-
 #define EA_CODE_MASK 0xffff
-#define EA_CUSTOM_BIT 0x8000
 #define EA_ALLOW_UNDEF 0x10000		/* ea_find: allow EAF_TYPE_UNDEF */
 #define EA_BIT(n) ((n) << 24)		/* Used in bitfield accessors */
 #define EA_BIT_GET(ea) ((ea) >> 24)
@@ -179,32 +167,67 @@ typedef struct ea_list {
 #define EALF_BISECT 2			/* Use interval bisection for searching */
 #define EALF_CACHED 4			/* Attributes belonging to cached rta */
 
+struct ea_class {
+#define EA_CLASS_INSIDE \
+  const char *name;			/* Name (both print and filter) */ \
+  struct symbol *sym;			/* Symbol to export to configs */ \
+  uint id;				/* Autoassigned attribute ID */ \
+  uint uc;				/* Reference count */ \
+  btype type;				/* Data type ID */ \
+  uint readonly:1;			/* This attribute can't be changed by filters */ \
+  uint conf:1;				/* Requested by config */ \
+  void (*format)(const eattr *ea, byte *buf, uint size); \
+
+  EA_CLASS_INSIDE;
+};
+
+struct ea_class_ref {
+  resource r;
+  struct ea_class *class;
+};
+
+extern struct ea_class ea_gen_igp_metric;
+
+void ea_register_init(struct ea_class *);
+struct ea_class_ref *ea_register_alloc(pool *, struct ea_class);
+
+#define EA_REGISTER_ALL_HELPER(x)	ea_register_init(x);
+#define EA_REGISTER_ALL(...)		MACRO_FOREACH(EA_REGISTER_ALL_HELPER, __VA_ARGS__)
+
+struct ea_class *ea_class_find_by_id(uint id);
+struct ea_class *ea_class_find_by_name(const char *name);
+static inline struct ea_class *ea_class_self(struct ea_class *self) { return self; }
+#define ea_class_find(_arg)	_Generic((_arg), \
+  uint: ea_class_find_by_id, \
+  word: ea_class_find_by_id, \
+  char *: ea_class_find_by_name, \
+  const char *: ea_class_find_by_name, \
+  struct ea_class *: ea_class_self)(_arg)
+
 struct ea_walk_state {
   ea_list *eattrs;			/* Ccurrent ea_list, initially set by caller */
   eattr *ea;				/* Current eattr, initially NULL */
   u32 visited[4];			/* Bitfield, limiting max to 128 */
 };
 
-eattr *ea_find(ea_list *, unsigned ea);
-eattr *ea_walk(struct ea_walk_state *s, uint id, uint max);
-
-/**
- * ea_get_int - fetch an integer attribute
- * @e: attribute list
- * @id: attribute ID
- * @def: default value
- *
- * This function is a shortcut for retrieving a value of an integer attribute
- * by calling ea_find() to find the attribute, extracting its value or returning
- * a provided default if no such attribute is present.
- */
-static inline u32
-ea_get_int(ea_list *e, unsigned id, u32 def)
+#define ea_find(_l, _arg)	_Generic((_arg), uint: ea_find_by_id, struct ea_class *: ea_find_by_class, char *: ea_find_by_name)(_l, _arg)
+eattr *ea_find_by_id(ea_list *, unsigned ea);
+static inline eattr *ea_find_by_class(ea_list *l, const struct ea_class *def)
+{ return ea_find_by_id(l, def->id); }
+static inline eattr *ea_find_by_name(ea_list *l, const char *name)
 {
-  eattr *a = ea_find(e, id);
-  return a ? a->u.data : def;
+  const struct ea_class *def = ea_class_find_by_name(name);
+  return def ? ea_find_by_class(l, def) : NULL;
 }
 
+#define ea_get_int(_l, _ident, _def)  ({ \
+    struct ea_class *cls = ea_class_find((_ident)); \
+    ASSERT_DIE(cls->type & EAF_EMBEDDED); \
+    const eattr *ea = ea_find((_l), cls->id); \
+    (ea ? ea->u.data : (_def)); \
+    })
+
+eattr *ea_walk(struct ea_walk_state *s, uint id, uint max);
 void ea_dump(ea_list *);
 int ea_same(ea_list *x, ea_list *y);	/* Test whether two ea_lists are identical */
 uint ea_hash(ea_list *e);	/* Calculate 16-bit hash value */
@@ -219,19 +242,22 @@ void ea_list_copy(ea_list *dest, ea_list *src, uint size);
 
 #define EA_LOCAL_LIST(N)  struct { ea_list l; eattr a[N]; }
 
-#define EA_LITERAL_EMBEDDED(_id, _type, _flags, _val) ({ \
+#define EA_LITERAL_EMBEDDED(_class, _flags, _val) ({ \
+    btype _type = (_class)->type; \
     ASSERT_DIE(_type & EAF_EMBEDDED); \
-    EA_LITERAL_GENERIC(_id, _type, _flags, .u.i = _val); \
+    EA_LITERAL_GENERIC((_class)->id, _type, _flags, .u.i = _val); \
     })
 
-#define EA_LITERAL_STORE_ADATA(_id, _type, _flags, _buf, _len) ({ \
+#define EA_LITERAL_STORE_ADATA(_class, _flags, _buf, _len) ({ \
+    btype _type = (_class)->type; \
     ASSERT_DIE(!(_type & EAF_EMBEDDED)); \
-    EA_LITERAL_GENERIC(_id, _type, _flags, .u.ad = tmp_store_adata((_buf), (_len))); \
+    EA_LITERAL_GENERIC((_class)->id, _type, _flags, .u.ad = tmp_store_adata((_buf), (_len))); \
     })
 
-#define EA_LITERAL_DIRECT_ADATA(_id, _type, _flags, _adata) ({ \
+#define EA_LITERAL_DIRECT_ADATA(_class, _flags, _adata) ({ \
+    btype _type = (_class)->type; \
     ASSERT_DIE(!(_type & EAF_EMBEDDED)); \
-    EA_LITERAL_GENERIC(_id, _type, _flags, .u.ad = _adata); \
+    EA_LITERAL_GENERIC((_class)->id, _type, _flags, .u.ad = _adata); \
     })
 
 #define EA_LITERAL_GENERIC(_id, _type, _flags, ...) \
@@ -253,19 +279,19 @@ ea_set_attr(ea_list **to, eattr a)
 }
 
 static inline void
-ea_unset_attr(ea_list **to, _Bool local, uint code)
+ea_unset_attr(ea_list **to, _Bool local, const struct ea_class *def)
 {
-  ea_set_attr(to, EA_LITERAL_GENERIC(code, 0, 0,
+  ea_set_attr(to, EA_LITERAL_GENERIC(def->id, 0, 0,
 	.fresh = local, .originated = local, .undef = 1));
 }
 
 static inline void
-ea_set_attr_u32(ea_list **to, uint id, uint flags, uint type, u32 data)
-{ ea_set_attr(to, EA_LITERAL_EMBEDDED(id, type, flags, data)); }
+ea_set_attr_u32(ea_list **to, const struct ea_class *def, uint flags, u64 data)
+{ ea_set_attr(to, EA_LITERAL_EMBEDDED(def, flags, data)); }
 
 static inline void
-ea_set_attr_data(ea_list **to, uint id, uint flags, uint type, void *data, uint len)
-{ ea_set_attr(to, EA_LITERAL_STORE_ADATA(id, type, flags, data, len)); }
+ea_set_attr_data(ea_list **to, const struct ea_class *def, uint flags, void *data, uint len)
+{ ea_set_attr(to, EA_LITERAL_STORE_ADATA(def, flags, data, len)); }
 
 
 #define NEXTHOP_MAX_SIZE (sizeof(struct nexthop) + sizeof(u32)*MPLS_MAX_LABEL_STACK)
diff --git a/nest/config.Y b/nest/config.Y
index 12fd01a2..c2913506 100644
--- a/nest/config.Y
+++ b/nest/config.Y
@@ -120,7 +120,7 @@ CF_KEYWORDS(PASSWORD, KEY, FROM, PASSIVE, TO, ID, EVENTS, PACKETS, PROTOCOLS, CH
 CF_KEYWORDS(ALGORITHM, KEYED, HMAC, MD5, SHA1, SHA256, SHA384, SHA512, BLAKE2S128, BLAKE2S256, BLAKE2B256, BLAKE2B512)
 CF_KEYWORDS(PRIMARY, STATS, COUNT, BY, FOR, IN, COMMANDS, PREEXPORT, NOEXPORT, EXPORTED, GENERATE)
 CF_KEYWORDS(BGP, PASSWORDS, DESCRIPTION)
-CF_KEYWORDS(RELOAD, IN, OUT, MRTDUMP, MESSAGES, RESTRICT, MEMORY, IGP_METRIC, CLASS, DSCP)
+CF_KEYWORDS(RELOAD, IN, OUT, MRTDUMP, MESSAGES, RESTRICT, MEMORY, CLASS, DSCP)
 CF_KEYWORDS(TIMEFORMAT, ISO, SHORT, LONG, ROUTE, PROTOCOL, BASE, LOG, S, MS, US)
 CF_KEYWORDS(GRACEFUL, RESTART, WAIT, MAX, FLUSH, AS)
 CF_KEYWORDS(MIN, IDLE, RX, TX, INTERVAL, MULTIPLIER, PASSIVE)
@@ -921,9 +921,6 @@ proto_patt2:
  | TEXT { $$.ptr = $1; $$.patt = 1; }
  ;
 
-dynamic_attr: IGP_METRIC { $$ = f_new_dynamic_attr(T_INT, EA_GEN_IGP_METRIC); } ;
-
-
 CF_CODE
 
 CF_END
diff --git a/nest/proto.c b/nest/proto.c
index 95c319db..72613f8d 100644
--- a/nest/proto.c
+++ b/nest/proto.c
@@ -26,7 +26,6 @@ pool *proto_pool;
 list STATIC_LIST_INIT(proto_list);
 
 static list STATIC_LIST_INIT(protocol_list);
-struct protocol *class_to_protocol[PROTOCOL__MAX];
 
 #define CD(c, msg, args...) ({ if (c->debug & D_STATES) log(L_TRACE "%s.%s: " msg, c->proto->name, c->name ?: "?", ## args); })
 #define PD(p, msg, args...) ({ if (p->debug & D_STATES) log(L_TRACE "%s: " msg, p->name, ## args); })
@@ -1637,9 +1636,6 @@ void
 proto_build(struct protocol *p)
 {
   add_tail(&protocol_list, &p->n);
-  ASSERT(p->class);
-  ASSERT(!class_to_protocol[p->class]);
-  class_to_protocol[p->class] = p;
 }
 
 /* FIXME: convert this call to some protocol hook */
diff --git a/nest/protocol.h b/nest/protocol.h
index 7fb08992..8f0cc4b4 100644
--- a/nest/protocol.h
+++ b/nest/protocol.h
@@ -37,38 +37,20 @@ struct symbol;
  *	Routing Protocol
  */
 
-enum protocol_class {
-  PROTOCOL_NONE,
-  PROTOCOL_BABEL,
-  PROTOCOL_BFD,
-  PROTOCOL_BGP,
-  PROTOCOL_DEVICE,
-  PROTOCOL_DIRECT,
-  PROTOCOL_KERNEL,
-  PROTOCOL_OSPF,
-  PROTOCOL_MRT,
-  PROTOCOL_PERF,
-  PROTOCOL_PIPE,
-  PROTOCOL_RADV,
-  PROTOCOL_RIP,
-  PROTOCOL_RPKI,
-  PROTOCOL_STATIC,
-  PROTOCOL__MAX
-};
-
-extern struct protocol *class_to_protocol[PROTOCOL__MAX];
 
 struct protocol {
   node n;
   char *name;
   char *template;			/* Template for automatic generation of names */
   int name_counter;			/* Counter for automatic name generation */
-  enum protocol_class class;		/* Machine readable protocol class */
   uint preference;			/* Default protocol preference */
   uint channel_mask;			/* Mask of accepted channel types (NB_*) */
   uint proto_size;			/* Size of protocol data structure */
   uint config_size;			/* Size of protocol config data structure */
 
+  uint eattr_begin;			/* First ID of registered eattrs */
+  uint eattr_end;			/* End of eattr id zone */
+
   void (*preconfig)(struct protocol *, struct config *);	/* Just before configuring */
   void (*postconfig)(struct proto_config *);			/* After configuring each instance */
   struct proto * (*init)(struct proto_config *);		/* Create new instance */
@@ -79,7 +61,7 @@ struct protocol {
   void (*cleanup)(struct proto *);		/* Called after shutdown when protocol became hungry/down */
   void (*get_status)(struct proto *, byte *buf); /* Get instance status (for `show protocols' command) */
   void (*get_route_info)(struct rte *, byte *buf); /* Get route information (for `show route' command) */
-  int (*get_attr)(const struct eattr *, byte *buf, int buflen);	/* ASCIIfy dynamic attribute (returns GA_*) */
+//  int (*get_attr)(const struct eattr *, byte *buf, int buflen);	/* ASCIIfy dynamic attribute (returns GA_*) */
   void (*show_proto_info)(struct proto *);	/* Show protocol info (for `show protocols all' command) */
   void (*copy_config)(struct proto_config *, struct proto_config *);	/* Copy config from given protocol instance */
 };
diff --git a/nest/rt-attr.c b/nest/rt-attr.c
index afa95eec..a763db4d 100644
--- a/nest/rt-attr.c
+++ b/nest/rt-attr.c
@@ -60,6 +60,11 @@
 
 const adata null_adata;		/* adata of length 0 */
 
+struct ea_class ea_gen_igp_metric = {
+  .name = "igp_metric",
+  .type = T_INT,
+};
+
 const char * const rta_src_names[RTS_MAX] = {
   [RTS_STATIC]		= "static",
   [RTS_INHERIT]		= "inherit",
@@ -401,6 +406,117 @@ nexthop_free(struct nexthop *o)
  *	Extended Attributes
  */
 
+#define EA_CLASS_INITIAL_MAX	128
+static struct ea_class **ea_class_global = NULL;
+static uint ea_class_max;
+static struct idm ea_class_idm;
+
+/* Config parser lex register function */
+void ea_lex_register(struct ea_class *def);
+void ea_lex_unregister(struct ea_class *def);
+
+static void
+ea_class_free(struct ea_class *cl)
+{
+  /* No more ea class references. Unregister the attribute. */
+  idm_free(&ea_class_idm, cl->id);
+  ea_class_global[cl->id] = NULL;
+  ea_lex_unregister(cl);
+}
+
+static void
+ea_class_ref_free(resource *r)
+{
+  struct ea_class_ref *ref = SKIP_BACK(struct ea_class_ref, r, r);
+  if (!--ref->class->uc)
+    ea_class_free(ref->class);
+}
+
+static void
+ea_class_ref_dump(resource *r)
+{
+  struct ea_class_ref *ref = SKIP_BACK(struct ea_class_ref, r, r);
+  debug("name \"%s\", type=%d\n", ref->class->name, ref->class->type);
+}
+
+static struct resclass ea_class_ref_class = {
+  .name = "Attribute class reference",
+  .size = sizeof(struct ea_class_ref),
+  .free = ea_class_ref_free,
+  .dump = ea_class_ref_dump,
+  .lookup = NULL,
+  .memsize = NULL,
+};
+
+static void
+ea_class_init(void)
+{
+  idm_init(&ea_class_idm, rta_pool, EA_CLASS_INITIAL_MAX);
+  ea_class_global = mb_allocz(rta_pool,
+      sizeof(*ea_class_global) * (ea_class_max = EA_CLASS_INITIAL_MAX));
+}
+
+static struct ea_class_ref *
+ea_ref_class(pool *p, struct ea_class *def)
+{
+  def->uc++;
+  struct ea_class_ref *ref = ralloc(p, &ea_class_ref_class);
+  ref->class = def;
+  return ref;
+}
+
+static struct ea_class_ref *
+ea_register(pool *p, struct ea_class *def)
+{
+  def->id = idm_alloc(&ea_class_idm);
+
+  ASSERT_DIE(ea_class_global);
+  while (def->id >= ea_class_max)
+    ea_class_global = mb_realloc(ea_class_global, sizeof(*ea_class_global) * (ea_class_max *= 2));
+
+  ASSERT_DIE(def->id < ea_class_max);
+  ea_class_global[def->id] = def;
+
+  ea_lex_register(def);
+
+  return ea_ref_class(p, def);
+}
+
+struct ea_class_ref *
+ea_register_alloc(pool *p, struct ea_class cl)
+{
+  struct ea_class *clp = ea_class_find_by_name(cl.name);
+  if (clp && clp->type == cl.type)
+    return ea_ref_class(p, clp);
+
+  uint namelen = strlen(cl.name) + 1;
+
+  struct {
+    struct ea_class cl;
+    char name[0];
+  } *cla = mb_alloc(rta_pool, sizeof(struct ea_class) + namelen);
+  cla->cl = cl;
+  memcpy(cla->name, cl.name, namelen);
+  cla->cl.name = cla->name;
+
+  return ea_register(p, &cla->cl);
+}
+
+void
+ea_register_init(struct ea_class *clp)
+{
+  ASSERT_DIE(!ea_class_find_by_name(clp->name));
+  ea_register(&root_pool, clp);
+}
+
+struct ea_class *
+ea_class_find_by_id(uint id)
+{
+  ASSERT_DIE(id < ea_class_max);
+  ASSERT_DIE(ea_class_global[id]);
+  return ea_class_global[id];
+}
+
 static inline eattr *
 ea__find(ea_list *e, unsigned id)
 {
@@ -444,7 +560,7 @@ ea__find(ea_list *e, unsigned id)
  * to its &eattr structure or %NULL if no such attribute exists.
  */
 eattr *
-ea_find(ea_list *e, unsigned id)
+ea_find_by_id(ea_list *e, unsigned id)
 {
   eattr *a = ea__find(e, id & EA_CODE_MASK);
 
@@ -784,26 +900,44 @@ ea_list_copy(ea_list *n, ea_list *o, uint elen)
   ASSERT_DIE(adpos == elen);
 }
 
-static inline void
-ea_free(ea_list *o)
+static void
+ea_list_ref(ea_list *l)
 {
-  if (o)
+  for(uint i=0; i<l->count; i++)
     {
-      ASSERT(!o->next);
-      mb_free(o);
+      eattr *a = &l->attrs[i];
+      ASSERT_DIE(a->id < ea_class_max);
+
+      struct ea_class *cl = ea_class_global[a->id];
+      ASSERT_DIE(cl && cl->uc);
+      cl->uc++;
     }
 }
 
-static int
-get_generic_attr(const eattr *a, byte **buf, int buflen UNUSED)
+static void
+ea_list_unref(ea_list *l)
 {
-  if (a->id == EA_GEN_IGP_METRIC)
+  for(uint i=0; i<l->count; i++)
     {
-      *buf += bsprintf(*buf, "igp_metric");
-      return GA_NAME;
+      eattr *a = &l->attrs[i];
+      ASSERT_DIE(a->id < ea_class_max);
+
+      struct ea_class *cl = ea_class_global[a->id];
+      ASSERT_DIE(cl && cl->uc);
+      if (!--cl->uc)
+	ea_class_free(cl);
     }
+}
 
-  return GA_UNKNOWN;
+static inline void
+ea_free(ea_list *o)
+{
+  if (o)
+    {
+      ea_list_unref(o);
+      ASSERT(!o->next);
+      mb_free(o);
+    }
 }
 
 void
@@ -905,47 +1039,27 @@ ea_show_lc_set(struct cli *c, const struct adata *ad, byte *pos, byte *buf, byte
 void
 ea_show(struct cli *c, const eattr *e)
 {
-  struct protocol *p;
-  int status = GA_UNKNOWN;
   const struct adata *ad = (e->type & EAF_EMBEDDED) ? NULL : e->u.ptr;
   byte buf[CLI_MSG_SIZE];
   byte *pos = buf, *end = buf + sizeof(buf);
 
-  if (EA_IS_CUSTOM(e->id))
-    {
-      const char *name = ea_custom_name(e->id);
-      if (name)
-        {
-	  pos += bsprintf(pos, "%s", name);
-	  status = GA_NAME;
-	}
-      else
-	pos += bsprintf(pos, "%02x.", EA_PROTO(e->id));
-    }
-  else if (p = class_to_protocol[EA_PROTO(e->id)])
-    {
-      pos += bsprintf(pos, "%s.", p->name);
-      if (p->get_attr)
-	status = p->get_attr(e, pos, end - pos);
-      pos += strlen(pos);
-    }
-  else if (EA_PROTO(e->id))
-    pos += bsprintf(pos, "%02x.", EA_PROTO(e->id));
-  else
-    status = get_generic_attr(e, &pos, end - pos);
+  ASSERT_DIE(e->id < ea_class_max);
 
-  if (status < GA_NAME)
-    pos += bsprintf(pos, "%02x", EA_ID(e->id));
-  if (status < GA_FULL)
-    {
-      *pos++ = ':';
-      *pos++ = ' ';
+  struct ea_class *cls = ea_class_global[e->id];
+  ASSERT_DIE(cls);
 
-      if (e->undef)
-	bsprintf(pos, "undefined");
-      else
-      switch (e->type)
-	{
+  pos += bsprintf(pos, "%s", cls->name);
+
+  *pos++ = ':';
+  *pos++ = ' ';
+
+  if (e->undef)
+    bsprintf(pos, "undefined (should not happen)");
+  else if (cls->format)
+    cls->format(e, buf, end - buf);
+  else
+    switch (e->type)
+      {
 	case T_INT:
 	  bsprintf(pos, "%u", e->u.data);
 	  break;
@@ -970,13 +1084,10 @@ ea_show(struct cli *c, const eattr *e)
 	case T_LCLIST:
 	  ea_show_lc_set(c, ad, pos, buf, end);
 	  return;
-	case T_IFACE:
-	  bsprintf(pos, "%s", ((struct iface *) e->u.ptr)->name);
-	  return;
 	default:
 	  bsprintf(pos, "<type %02x>", e->type);
-	}
-    }
+      }
+
   cli_printf(c, -1012, "\t%s", buf);
 }
 
@@ -1006,7 +1117,7 @@ ea_dump(ea_list *e)
       for(i=0; i<e->count; i++)
 	{
 	  eattr *a = &e->attrs[i];
-	  debug(" %02x:%02x.%02x", EA_PROTO(a->id), EA_ID(a->id), a->flags);
+	  debug(" %04x.%02x", a->id, a->flags);
 	  debug("=%c",
 	      "?iO?IRP???S??pE?"
 	      "??L???N?????????"
@@ -1157,6 +1268,7 @@ rta_copy(rta *o)
   uint elen = ea_list_size(o->eattrs);
   r->eattrs = mb_alloc(rta_pool, elen);
   ea_list_copy(r->eattrs, o->eattrs, elen);
+  ea_list_ref(r->eattrs);
   r->eattrs->flags |= EALF_CACHED;
   return r;
 }
@@ -1357,6 +1469,9 @@ rta_init(void)
 
   rta_alloc_hash();
   rte_src_init();
+  ea_class_init();
+
+  ea_register_init(&ea_gen_igp_metric);
 }
 
 /*
diff --git a/nest/rt-dev.c b/nest/rt-dev.c
index 82533321..bdf8584d 100644
--- a/nest/rt-dev.c
+++ b/nest/rt-dev.c
@@ -185,7 +185,6 @@ dev_copy_config(struct proto_config *dest, struct proto_config *src)
 struct protocol proto_device = {
   .name =		"Direct",
   .template =		"direct%d",
-  .class =		PROTOCOL_DIRECT,
   .preference =		DEF_PREF_DIRECT,
   .channel_mask =	NB_IP | NB_IP6_SADR,
   .proto_size =		sizeof(struct rt_dev_proto),
diff --git a/nest/rt-table.c b/nest/rt-table.c
index 049b7a7f..af59d63b 100644
--- a/nest/rt-table.c
+++ b/nest/rt-table.c
@@ -2536,14 +2536,14 @@ net_flow_has_dst_prefix(const net_addr *n)
 static inline int
 rta_as_path_is_empty(rta *a)
 {
-  eattr *e = ea_find(a->eattrs, EA_CODE(PROTOCOL_BGP, BA_AS_PATH));
+  eattr *e = ea_find(a->eattrs, "bgp_path");
   return !e || (as_path_getlen(e->u.ptr) == 0);
 }
 
 static inline u32
 rta_get_first_asn(rta *a)
 {
-  eattr *e = ea_find(a->eattrs, EA_CODE(PROTOCOL_BGP, BA_AS_PATH));
+  eattr *e = ea_find(a->eattrs, "bgp_path");
   u32 asn;
 
   return (e && as_path_get_first_regular(e->u.ptr, &asn)) ? asn : 0;
@@ -2587,8 +2587,8 @@ rt_flowspec_check(rtable *tab_ip, rtable *tab_flow, const net_addr *n, rta *a, i
     return 0;
 
   /* Find ORIGINATOR_ID values */
-  u32 orig_a = ea_get_int(a->eattrs, EA_CODE(PROTOCOL_BGP, BA_ORIGINATOR_ID), 0);
-  u32 orig_b = ea_get_int(rb->attrs->eattrs, EA_CODE(PROTOCOL_BGP, BA_ORIGINATOR_ID), 0);
+  u32 orig_a = ea_get_int(a->eattrs, "bgp_originator_id", 0);
+  u32 orig_b = ea_get_int(rb->attrs->eattrs, "bgp_originator_id", 0);
 
   /* Originator is either ORIGINATOR_ID (if present), or BGP neighbor address (if not) */
   if ((orig_a != orig_b) || (!orig_a && !orig_b && !ipa_equal(a->from, rb->attrs->from)))
@@ -3458,7 +3458,7 @@ if_local_addr(ip_addr a, struct iface *i)
 u32
 rt_get_igp_metric(rte *rt)
 {
-  eattr *ea = ea_find(rt->attrs->eattrs, EA_GEN_IGP_METRIC);
+  eattr *ea = ea_find(rt->attrs->eattrs, "igp_metric");
 
   if (ea)
     return ea->u.data;
diff --git a/proto/babel/babel.c b/proto/babel/babel.c
index db710a0d..97dca4ac 100644
--- a/proto/babel/babel.c
+++ b/proto/babel/babel.c
@@ -37,6 +37,7 @@
 
 #include <stdlib.h>
 #include "babel.h"
+#include "lib/macro.h"
 
 #define LOG_PKT_AUTH(msg, args...) \
   log_rl(&p->log_pkt_tbf, L_AUTH "%s: " msg, p->p.name, args)
@@ -58,6 +59,8 @@ static void babel_update_cost(struct babel_neighbor *n);
 static inline void babel_kick_timer(struct babel_proto *p);
 static inline void babel_iface_kick_timer(struct babel_iface *ifa);
 
+static struct ea_class ea_babel_metric, ea_babel_router_id, ea_babel_seqno;
+
 /*
  *	Functions to maintain data structures
  */
@@ -646,9 +649,9 @@ babel_announce_rte(struct babel_proto *p, struct babel_entry *e)
     } eattrs = {
       .l.count = 3,
       .a = {
-	EA_LITERAL_EMBEDDED(EA_BABEL_METRIC, T_INT, 0, r->metric),
-	EA_LITERAL_STORE_ADATA(EA_BABEL_ROUTER_ID, T_OPAQUE, 0, &r->router_id, sizeof(r->router_id)),
-	EA_LITERAL_EMBEDDED(EA_BABEL_SEQNO, T_INT, 0, r->seqno),
+	EA_LITERAL_EMBEDDED(&ea_babel_metric, 0, r->metric),
+	EA_LITERAL_STORE_ADATA(&ea_babel_router_id, 0, &r->router_id, sizeof(r->router_id)),
+	EA_LITERAL_EMBEDDED(&ea_babel_seqno, 0, r->seqno),
       }
     };
 
@@ -2018,38 +2021,40 @@ static void
 babel_get_route_info(rte *rte, byte *buf)
 {
   u64 rid = 0;
-  eattr *e = ea_find(rte->attrs->eattrs, EA_BABEL_ROUTER_ID);
+  eattr *e = ea_find(rte->attrs->eattrs, &ea_babel_router_id);
   if (e)
     memcpy(&rid, e->u.ptr->data, sizeof(u64));
 
   buf += bsprintf(buf, " (%d/%d) [%lR]", rte->attrs->pref,
-      ea_get_int(rte->attrs->eattrs, EA_BABEL_METRIC, BABEL_INFINITY), rid);
+      ea_get_int(rte->attrs->eattrs, &ea_babel_metric, BABEL_INFINITY), rid);
 }
 
-static int
-babel_get_attr(const eattr *a, byte *buf, int buflen UNUSED)
+static void
+babel_router_id_format(const eattr *a, byte *buf, uint len)
 {
-  switch (a->id)
-  {
-  case EA_BABEL_SEQNO:
-    return GA_FULL;
+  u64 rid = 0;
+  memcpy(&rid, a->u.ptr->data, sizeof(u64));
+  bsnprintf(buf, len, "%lR", rid);
+}
 
-  case EA_BABEL_METRIC:
-    bsprintf(buf, "metric: %d", a->u.data);
-    return GA_FULL;
+static struct ea_class ea_babel_metric = {
+  .name = "babel_metric",
+  .type = T_INT,
+};
 
-  case EA_BABEL_ROUTER_ID:
-  {
-    u64 rid = 0;
-    memcpy(&rid, a->u.ptr->data, sizeof(u64));
-    bsprintf(buf, "router_id: %lR", rid);
-    return GA_FULL;
-  }
+static struct ea_class ea_babel_router_id = {
+  .name = "babel_router_id",
+  .type = T_OPAQUE,
+  .readonly = 1,
+  .format = babel_router_id_format,
+};
+
+static struct ea_class ea_babel_seqno = {
+  .name = "babel_seqno",
+  .type = T_INT,
+  .readonly = 1,
+};
 
-  default:
-    return GA_UNKNOWN;
-  }
-}
 
 void
 babel_show_interfaces(struct proto *P, const char *iff)
@@ -2272,13 +2277,13 @@ babel_rt_notify(struct proto *P, struct channel *c UNUSED, struct network *net,
   {
     /* Update */
     uint rt_seqno;
-    uint rt_metric = ea_get_int(new->attrs->eattrs, EA_BABEL_METRIC, 0);
+    uint rt_metric = ea_get_int(new->attrs->eattrs, &ea_babel_metric, 0);
     u64 rt_router_id = 0;
 
     if (new->src->proto == P)
     {
-      rt_seqno = ea_find(new->attrs->eattrs, EA_BABEL_SEQNO)->u.data;
-      eattr *e = ea_find(new->attrs->eattrs, EA_BABEL_ROUTER_ID);
+      rt_seqno = ea_get_int(new->attrs->eattrs, &ea_babel_seqno, 0);
+      eattr *e = ea_find(new->attrs->eattrs, &ea_babel_router_id);
       if (e)
 	memcpy(&rt_router_id, e->u.ptr->data, sizeof(u64));
     }
@@ -2329,8 +2334,8 @@ babel_rt_notify(struct proto *P, struct channel *c UNUSED, struct network *net,
 static int
 babel_rte_better(struct rte *new, struct rte *old)
 {
-  uint new_metric = ea_find(new->attrs->eattrs, EA_BABEL_SEQNO)->u.data;
-  uint old_metric = ea_find(old->attrs->eattrs, EA_BABEL_SEQNO)->u.data;
+  uint new_metric = ea_get_int(new->attrs->eattrs, &ea_babel_metric, BABEL_INFINITY);
+  uint old_metric = ea_get_int(old->attrs->eattrs, &ea_babel_metric, BABEL_INFINITY);
 
   return new_metric < old_metric;
 }
@@ -2338,7 +2343,7 @@ babel_rte_better(struct rte *new, struct rte *old)
 static u32
 babel_rte_igp_metric(struct rte *rt)
 {
-  return ea_get_int(rt->attrs->eattrs, EA_BABEL_METRIC, BABEL_INFINITY);
+  return ea_get_int(rt->attrs->eattrs, &ea_babel_metric, BABEL_INFINITY);
 }
 
 
@@ -2466,11 +2471,9 @@ babel_reconfigure(struct proto *P, struct proto_config *CF)
   return 1;
 }
 
-
 struct protocol proto_babel = {
   .name =		"Babel",
   .template =		"babel%d",
-  .class =		PROTOCOL_BABEL,
   .preference =		DEF_PREF_BABEL,
   .channel_mask =	NB_IP | NB_IP6_SADR,
   .proto_size =		sizeof(struct babel_proto),
@@ -2482,11 +2485,16 @@ struct protocol proto_babel = {
   .shutdown =		babel_shutdown,
   .reconfigure =	babel_reconfigure,
   .get_route_info =	babel_get_route_info,
-  .get_attr =		babel_get_attr
 };
 
 void
 babel_build(void)
 {
   proto_build(&proto_babel);
+
+  EA_REGISTER_ALL(
+      &ea_babel_metric,
+      &ea_babel_router_id,
+      &ea_babel_seqno
+      );
 }
diff --git a/proto/babel/babel.h b/proto/babel/babel.h
index 00814641..a980d1da 100644
--- a/proto/babel/babel.h
+++ b/proto/babel/babel.h
@@ -26,10 +26,6 @@
 #include "lib/string.h"
 #include "lib/timer.h"
 
-#define EA_BABEL_METRIC		EA_CODE(PROTOCOL_BABEL, 0)
-#define EA_BABEL_ROUTER_ID	EA_CODE(PROTOCOL_BABEL, 1)
-#define EA_BABEL_SEQNO		EA_CODE(PROTOCOL_BABEL, 2)
-
 #define BABEL_MAGIC		42
 #define BABEL_VERSION		2
 #define BABEL_PORT		6696
diff --git a/proto/babel/config.Y b/proto/babel/config.Y
index fa745993..82419b20 100644
--- a/proto/babel/config.Y
+++ b/proto/babel/config.Y
@@ -163,8 +163,6 @@ babel_iface_opt_list:
 babel_iface:
   babel_iface_start iface_patt_list_nopx babel_iface_opt_list babel_iface_finish;
 
-dynamic_attr: BABEL_METRIC { $$ = f_new_dynamic_attr(T_INT, EA_BABEL_METRIC); } ;
-
 CF_CLI_HELP(SHOW BABEL, ..., [[Show information about Babel protocol]]);
 
 CF_CLI(SHOW BABEL INTERFACES, optproto opttext, [<name>] [\"<interface>\"], [[Show information about Babel interfaces]])
diff --git a/proto/bfd/bfd.c b/proto/bfd/bfd.c
index d1e97cd5..1a2104ad 100644
--- a/proto/bfd/bfd.c
+++ b/proto/bfd/bfd.c
@@ -1170,7 +1170,6 @@ bfd_show_sessions(struct proto *P)
 struct protocol proto_bfd = {
   .name =		"BFD",
   .template =		"bfd%d",
-  .class =		PROTOCOL_BFD,
   .proto_size =		sizeof(struct bfd_proto),
   .config_size =	sizeof(struct bfd_config),
   .init =		bfd_init,
diff --git a/proto/bgp/attrs.c b/proto/bgp/attrs.c
index 4c67b161..72a4f68a 100644
--- a/proto/bgp/attrs.c
+++ b/proto/bgp/attrs.c
@@ -21,6 +21,7 @@
 #include "lib/resource.h"
 #include "lib/string.h"
 #include "lib/unaligned.h"
+#include "lib/macro.h"
 
 #include "bgp.h"
 
@@ -64,28 +65,37 @@
  * format - Optional hook that converts eattr to textual representation.
  */
 
-
-struct bgp_attr_desc {
-  const char *name;
-  uint type;
-  uint flags;
-  void (*export)(struct bgp_export_state *s, eattr *a);
-  int  (*encode)(struct bgp_write_state *s, eattr *a, byte *buf, uint size);
-  void (*decode)(struct bgp_parse_state *s, uint code, uint flags, byte *data, uint len, ea_list **to);
-  void (*format)(const eattr *ea, byte *buf, uint size);
+union bgp_attr_desc {
+  struct ea_class class;
+  struct {
+    EA_CLASS_INSIDE;
+    uint flags;
+    void (*export)(struct bgp_export_state *s, eattr *a);
+    int  (*encode)(struct bgp_write_state *s, eattr *a, byte *buf, uint size);
+    void (*decode)(struct bgp_parse_state *s, uint code, uint flags, byte *data, uint len, ea_list **to);
+  };
 };
 
-static const struct bgp_attr_desc bgp_attr_table[];
+static union bgp_attr_desc bgp_attr_table[];
+static inline const union bgp_attr_desc *bgp_find_attr_desc(eattr *a)
+{
+  const struct ea_class *class = ea_class_find(a->id);
+
+  if ((class < &bgp_attr_table[0].class) || (class >= &bgp_attr_table[BGP_ATTR_MAX].class))
+    return NULL;
+
+  return (const union bgp_attr_desc *) class;
+}
 
-static inline int bgp_attr_known(uint code);
+#define BGP_EA_ID(code)	(bgp_attr_table[code].id)
+#define EA_BGP_ID(code)	(((union bgp_attr_desc *) ea_class_find(code)) - bgp_attr_table)
 
 void bgp_set_attr_u32(ea_list **to, uint code, uint flags, u32 val)
 {
-  ASSERT(bgp_attr_known(code));
+  const union bgp_attr_desc *desc = &bgp_attr_table[code];
 
   ea_set_attr(to, EA_LITERAL_EMBEDDED(
-	EA_CODE(PROTOCOL_BGP, code),
-	bgp_attr_table[code].type,
+	&desc->class,
 	flags & ~BAF_EXT_LEN,
 	val
 	));
@@ -93,11 +103,10 @@ void bgp_set_attr_u32(ea_list **to, uint code, uint flags, u32 val)
 
 void bgp_set_attr_ptr(ea_list **to, uint code, uint flags, const struct adata *ad)
 {
-  ASSERT(bgp_attr_known(code));
+  const union bgp_attr_desc *desc = &bgp_attr_table[code];
 
   ea_set_attr(to, EA_LITERAL_DIRECT_ADATA(
-	EA_CODE(PROTOCOL_BGP, code),
-	bgp_attr_table[code].type,
+	&desc->class,
 	flags & ~BAF_EXT_LEN,
 	ad
 	));
@@ -106,17 +115,23 @@ void bgp_set_attr_ptr(ea_list **to, uint code, uint flags, const struct adata *a
 void
 bgp_set_attr_data(ea_list **to, uint code, uint flags, void *data, uint len)
 {
-  ASSERT(bgp_attr_known(code));
+  const union bgp_attr_desc *desc = &bgp_attr_table[code];
 
   ea_set_attr(to, EA_LITERAL_STORE_ADATA(
-	EA_CODE(PROTOCOL_BGP, code),
-	bgp_attr_table[code].type,
+	&desc->class,
 	flags & ~BAF_EXT_LEN,
 	data,
 	len
 	));
 }
 
+void
+bgp_unset_attr(ea_list **to, uint code)
+{
+  const union bgp_attr_desc *desc = &bgp_attr_table[code];
+  ea_unset_attr(to, 0, &desc->class);
+}
+
 #define REPORT(msg, args...) \
   ({ log(L_REMOTE "%s: " msg, s->proto->p.name, ## args); })
 
@@ -172,7 +187,7 @@ bgp_encode_u8(struct bgp_write_state *s UNUSED, eattr *a, byte *buf, uint size)
   if (size < (3+1))
     return -1;
 
-  bgp_put_attr_hdr3(buf, EA_ID(a->id), a->flags, 1);
+  bgp_put_attr_hdr3(buf, EA_BGP_ID(a->id), a->flags, 1);
   buf[3] = a->u.data;
 
   return 3+1;
@@ -184,7 +199,7 @@ bgp_encode_u32(struct bgp_write_state *s UNUSED, eattr *a, byte *buf, uint size)
   if (size < (3+4))
     return -1;
 
-  bgp_put_attr_hdr3(buf, EA_ID(a->id), a->flags, 4);
+  bgp_put_attr_hdr3(buf, EA_BGP_ID(a->id), a->flags, 4);
   put_u32(buf+3, a->u.data);
 
   return 3+4;
@@ -198,7 +213,7 @@ bgp_encode_u32s(struct bgp_write_state *s UNUSED, eattr *a, byte *buf, uint size
   if (size < (4+len))
     return -1;
 
-  uint hdr = bgp_put_attr_hdr(buf, EA_ID(a->id), a->flags, len);
+  uint hdr = bgp_put_attr_hdr(buf, EA_BGP_ID(a->id), a->flags, len);
   put_u32s(buf + hdr, (u32 *) a->u.ptr->data, len / 4);
 
   return hdr + len;
@@ -219,7 +234,7 @@ bgp_put_attr(byte *buf, uint size, uint code, uint flags, const byte *data, uint
 static int
 bgp_encode_raw(struct bgp_write_state *s UNUSED, eattr *a, byte *buf, uint size)
 {
-  return bgp_put_attr(buf, size, EA_ID(a->id), a->flags, a->u.ptr->data, a->u.ptr->length);
+  return bgp_put_attr(buf, size, EA_BGP_ID(a->id), a->flags, a->u.ptr->data, a->u.ptr->length);
 }
 
 
@@ -359,7 +374,7 @@ bgp_aigp_set_metric(struct linpool *pool, const struct adata *ad, u64 metric)
 int
 bgp_total_aigp_metric_(rte *e, u64 *metric, const struct adata **ad)
 {
-  eattr *a = ea_find(e->attrs->eattrs, EA_CODE(PROTOCOL_BGP, BA_AIGP));
+  eattr *a = ea_find(e->attrs->eattrs, BGP_EA_ID(BA_AIGP));
   if (!a)
     return 0;
 
@@ -993,11 +1008,30 @@ bgp_format_mpls_label_stack(const eattr *a, byte *buf, uint size)
   pos[lnum ? -1 : 0] = 0;
 }
 
+static inline void
+bgp_export_unknown(struct bgp_export_state *s UNUSED, eattr *a)
+{
+  if (!(a->flags & BAF_TRANSITIVE))
+    UNSET(a);
+
+  a->flags |= BAF_PARTIAL;
+}
+
 static inline void
 bgp_decode_unknown(struct bgp_parse_state *s UNUSED, uint code, uint flags, byte *data, uint len, ea_list **to)
 {
+  if (!(flags & BAF_OPTIONAL))
+    WITHDRAW("Unknown attribute (code %u) - conflicting flags (%02x)", code, flags);
+
   /* Cannot use bgp_set_attr_data() as it works on known attributes only */
-  ea_set_attr_data(to, EA_CODE(PROTOCOL_BGP, code), flags, T_OPAQUE, data, len);
+  ea_set_attr_data(to, &bgp_attr_table[code].class, flags, data, len);
+}
+
+static inline void
+bgp_format_unknown(const eattr *a, byte *buf, uint size)
+{
+  if (a->flags & BAF_TRANSITIVE)
+    bsnprintf(buf, size, "(transitive)");
 }
 
 
@@ -1005,9 +1039,9 @@ bgp_decode_unknown(struct bgp_parse_state *s UNUSED, uint code, uint flags, byte
  *	Attribute table
  */
 
-static const struct bgp_attr_desc bgp_attr_table[] = {
+static union bgp_attr_desc bgp_attr_table[BGP_ATTR_MAX] = {
   [BA_ORIGIN] = {
-    .name = "origin",
+    .name = "bgp_origin",
     .type = T_ENUM_BGP_ORIGIN,
     .flags = BAF_TRANSITIVE,
     .export = bgp_export_origin,
@@ -1016,14 +1050,14 @@ static const struct bgp_attr_desc bgp_attr_table[] = {
     .format = bgp_format_origin,
   },
   [BA_AS_PATH] = {
-    .name = "as_path",
+    .name = "bgp_path",
     .type = T_PATH,
     .flags = BAF_TRANSITIVE,
     .encode = bgp_encode_as_path,
     .decode = bgp_decode_as_path,
   },
   [BA_NEXT_HOP] = {
-    .name = "next_hop",
+    .name = "bgp_next_hop",
     .type = T_IP,
     .flags = BAF_TRANSITIVE,
     .encode = bgp_encode_next_hop,
@@ -1031,14 +1065,14 @@ static const struct bgp_attr_desc bgp_attr_table[] = {
     .format = bgp_format_next_hop,
   },
   [BA_MULTI_EXIT_DISC] = {
-    .name = "med",
+    .name = "bgp_med",
     .type = T_INT,
     .flags = BAF_OPTIONAL,
     .encode = bgp_encode_u32,
     .decode = bgp_decode_med,
   },
   [BA_LOCAL_PREF] = {
-    .name = "local_pref",
+    .name = "bgp_local_pref",
     .type = T_INT,
     .flags = BAF_TRANSITIVE,
     .export = bgp_export_local_pref,
@@ -1046,14 +1080,14 @@ static const struct bgp_attr_desc bgp_attr_table[] = {
     .decode = bgp_decode_local_pref,
   },
   [BA_ATOMIC_AGGR] = {
-    .name = "atomic_aggr",
+    .name = "bgp_atomic_aggr",
     .type = T_OPAQUE,
     .flags = BAF_TRANSITIVE,
     .encode = bgp_encode_raw,
     .decode = bgp_decode_atomic_aggr,
   },
   [BA_AGGREGATOR] = {
-    .name = "aggregator",
+    .name = "bgp_aggregator",
     .type = T_OPAQUE,
     .flags = BAF_OPTIONAL | BAF_TRANSITIVE,
     .encode = bgp_encode_aggregator,
@@ -1061,7 +1095,7 @@ static const struct bgp_attr_desc bgp_attr_table[] = {
     .format = bgp_format_aggregator,
   },
   [BA_COMMUNITY] = {
-    .name = "community",
+    .name = "bgp_community",
     .type = T_CLIST,
     .flags = BAF_OPTIONAL | BAF_TRANSITIVE,
     .export = bgp_export_community,
@@ -1069,7 +1103,7 @@ static const struct bgp_attr_desc bgp_attr_table[] = {
     .decode = bgp_decode_community,
   },
   [BA_ORIGINATOR_ID] = {
-    .name = "originator_id",
+    .name = "bgp_originator_id",
     .type = T_QUAD,
     .flags = BAF_OPTIONAL,
     .export = bgp_export_originator_id,
@@ -1077,7 +1111,7 @@ static const struct bgp_attr_desc bgp_attr_table[] = {
     .decode = bgp_decode_originator_id,
   },
   [BA_CLUSTER_LIST] = {
-    .name = "cluster_list",
+    .name = "bgp_cluster_list",
     .type = T_CLIST,
     .flags = BAF_OPTIONAL,
     .export = bgp_export_cluster_list,
@@ -1086,19 +1120,19 @@ static const struct bgp_attr_desc bgp_attr_table[] = {
     .format = bgp_format_cluster_list,
   },
   [BA_MP_REACH_NLRI] = {
-    .name = "mp_reach_nlri",
+    .name = "bgp_mp_reach_nlri",
     .type = T_OPAQUE,
     .flags = BAF_OPTIONAL,
     .decode = bgp_decode_mp_reach_nlri,
   },
   [BA_MP_UNREACH_NLRI] = {
-    .name = "mp_unreach_nlri",
+    .name = "bgp_mp_unreach_nlri",
     .type = T_OPAQUE,
     .flags = BAF_OPTIONAL,
     .decode = bgp_decode_mp_unreach_nlri,
   },
   [BA_EXT_COMMUNITY] = {
-    .name = "ext_community",
+    .name = "bgp_ext_community",
     .type = T_ECLIST,
     .flags = BAF_OPTIONAL | BAF_TRANSITIVE,
     .export = bgp_export_ext_community,
@@ -1106,14 +1140,14 @@ static const struct bgp_attr_desc bgp_attr_table[] = {
     .decode = bgp_decode_ext_community,
   },
   [BA_AS4_PATH] = {
-    .name = "as4_path",
+    .name = "bgp_as4_path",
     .type = T_PATH,
     .flags = BAF_OPTIONAL | BAF_TRANSITIVE,
     .encode = bgp_encode_raw,
     .decode = bgp_decode_as4_path,
   },
   [BA_AS4_AGGREGATOR] = {
-    .name = "as4_aggregator",
+    .name = "bgp_as4_aggregator",
     .type = T_OPAQUE,
     .flags = BAF_OPTIONAL | BAF_TRANSITIVE,
     .encode = bgp_encode_raw,
@@ -1121,7 +1155,7 @@ static const struct bgp_attr_desc bgp_attr_table[] = {
     .format = bgp_format_aggregator,
   },
   [BA_AIGP] = {
-    .name = "aigp",
+    .name = "bgp_aigp",
     .type = T_OPAQUE,
     .flags = BAF_OPTIONAL | BAF_DECODE_FLAGS,
     .export = bgp_export_aigp,
@@ -1130,7 +1164,7 @@ static const struct bgp_attr_desc bgp_attr_table[] = {
     .format = bgp_format_aigp,
   },
   [BA_LARGE_COMMUNITY] = {
-    .name = "large_community",
+    .name = "bgp_large_community",
     .type = T_LCLIST,
     .flags = BAF_OPTIONAL | BAF_TRANSITIVE,
     .export = bgp_export_large_community,
@@ -1138,8 +1172,9 @@ static const struct bgp_attr_desc bgp_attr_table[] = {
     .decode = bgp_decode_large_community,
   },
   [BA_MPLS_LABEL_STACK] = {
-    .name = "mpls_label_stack",
+    .name = "bgp_mpls_label_stack",
     .type = T_CLIST,
+    .readonly = 1,
     .export = bgp_export_mpls_label_stack,
     .encode = bgp_encode_mpls_label_stack,
     .decode = bgp_decode_mpls_label_stack,
@@ -1147,12 +1182,32 @@ static const struct bgp_attr_desc bgp_attr_table[] = {
   },
 };
 
-static inline int
-bgp_attr_known(uint code)
+eattr *
+bgp_find_attr(ea_list *attrs, uint code)
 {
-  return (code < ARRAY_SIZE(bgp_attr_table)) && bgp_attr_table[code].name;
+  return ea_find(attrs, BGP_EA_ID(code));
 }
 
+void
+bgp_register_attrs(void)
+{
+  for (uint i=0; i<ARRAY_SIZE(bgp_attr_table); i++)
+  {
+    if (!bgp_attr_table[i].name)
+      bgp_attr_table[i] = (union bgp_attr_desc) {
+	.name = mb_sprintf(&root_pool, "bgp_unknown_0x%02x", i),
+	.type = T_OPAQUE,
+	.flags = BAF_OPTIONAL,
+	.readonly = 1,
+	.export = bgp_export_unknown,
+	.encode = bgp_encode_raw,
+	.decode = bgp_decode_unknown,
+	.format = bgp_format_unknown,
+      };
+
+    ea_register_init(&bgp_attr_table[i].class);
+  }
+}
 
 /*
  *	Attribute export
@@ -1161,38 +1216,24 @@ bgp_attr_known(uint code)
 static inline void
 bgp_export_attr(struct bgp_export_state *s, eattr *a, ea_list *to)
 {
-  if (EA_PROTO(a->id) != PROTOCOL_BGP)
+  const union bgp_attr_desc *desc = bgp_find_attr_desc(a);
+  if (!desc)
     return;
 
-  uint code = EA_ID(a->id);
-
-  if (bgp_attr_known(code))
-  {
-    const struct bgp_attr_desc *desc = &bgp_attr_table[code];
-
-    /* The flags might have been zero if the attr was added by filters */
-    a->flags = (a->flags & BAF_PARTIAL) | desc->flags;
-
-    /* Set partial bit if new opt-trans attribute is attached to non-local route */
-    if ((s->src != NULL) && (a->originated) &&
-	(a->flags & BAF_OPTIONAL) && (a->flags & BAF_TRANSITIVE))
-      a->flags |= BAF_PARTIAL;
+  /* The flags might have been zero if the attr was added locally */
+  a->flags = (a->flags & BAF_PARTIAL) | desc->flags;
 
-    /* Call specific hook */
-    CALL(desc->export, s, a);
+  /* Set partial bit if new opt-trans attribute is attached to non-local route */
+  if ((s->src != NULL) && (a->originated) &&
+      (a->flags & BAF_OPTIONAL) && (a->flags & BAF_TRANSITIVE))
+    a->flags |= BAF_PARTIAL;
 
-    /* Attribute might become undefined in hook */
-    if (a->undef)
-      return;
-  }
-  else
-  {
-    /* Don't re-export unknown non-transitive attributes */
-    if (!(a->flags & BAF_TRANSITIVE))
-      return;
+  /* Call specific hook */
+  CALL(desc->export, s, a);
 
-    a->flags |= BAF_PARTIAL;
-  }
+  /* Attribute might become undefined in hook */
+  if (a->undef)
+    return;
 
   /* Append updated attribute */
   to->attrs[to->count++] = *a;
@@ -1240,14 +1281,9 @@ bgp_export_attrs(struct bgp_export_state *s, const ea_list *a)
 static inline int
 bgp_encode_attr(struct bgp_write_state *s, eattr *a, byte *buf, uint size)
 {
-  ASSERT(EA_PROTO(a->id) == PROTOCOL_BGP);
-
-  uint code = EA_ID(a->id);
-
-  if (bgp_attr_known(code))
-    return bgp_attr_table[code].encode(s, a, buf, size);
-  else
-    return bgp_encode_raw(s, a, buf, size);
+  const union bgp_attr_desc *desc = bgp_find_attr_desc(a);
+  ASSERT_DIE(desc);
+  return desc->encode(s, a, buf, size);
 }
 
 /**
@@ -1312,7 +1348,7 @@ bgp_cluster_list_loopy(struct bgp_proto *p, ea_list *attrs)
 }
 
 static inline void
-bgp_decode_attr(struct bgp_parse_state *s, uint code, uint flags, byte *data, uint len, ea_list **to)
+bgp_decode_attr(struct bgp_parse_state *s, byte code, byte flags, byte *data, uint len, ea_list **to)
 {
   /* Handle duplicate attributes; RFC 7606 3 (g) */
   if (BIT32_TEST(s->attrs_seen, code))
@@ -1324,24 +1360,15 @@ bgp_decode_attr(struct bgp_parse_state *s, uint code, uint flags, byte *data, ui
   }
   BIT32_SET(s->attrs_seen, code);
 
-  if (bgp_attr_known(code))
-  {
-    const struct bgp_attr_desc *desc = &bgp_attr_table[code];
+  ASSERT_DIE(bgp_attr_table[code].id);
+  const union bgp_attr_desc *desc = &bgp_attr_table[code];
 
-    /* Handle conflicting flags; RFC 7606 3 (c) */
-    if (((flags ^ desc->flags) & (BAF_OPTIONAL | BAF_TRANSITIVE)) &&
-	!(desc->flags & BAF_DECODE_FLAGS))
-      WITHDRAW("Malformed %s attribute - conflicting flags (%02x)", desc->name, flags);
+  /* Handle conflicting flags; RFC 7606 3 (c) */
+  if (((flags ^ desc->flags) & (BAF_OPTIONAL | BAF_TRANSITIVE)) &&
+      !(desc->flags & BAF_DECODE_FLAGS))
+    WITHDRAW("Malformed %s attribute - conflicting flags (%02x, expected %02x)", desc->name, flags, desc->flags);
 
-    desc->decode(s, code, flags, data, len, to);
-  }
-  else /* Unknown attribute */
-  {
-    if (!(flags & BAF_OPTIONAL))
-      WITHDRAW("Unknown attribute (code %u) - conflicting flags (%02x)", code, flags);
-
-    bgp_decode_unknown(s, code, flags, data, len, to);
-  }
+  desc->decode(s, code, flags, data, len, to);
 }
 
 /**
@@ -1359,7 +1386,8 @@ bgp_decode_attrs(struct bgp_parse_state *s, byte *data, uint len)
 {
   struct bgp_proto *p = s->proto;
   ea_list *attrs = NULL;
-  uint code, flags, alen;
+  uint alen;
+  byte code, flags;
   byte *pos = data;
 
   /* Parse the attributes */
@@ -1703,7 +1731,7 @@ bgp_preexport(struct proto *P, rte *e)
   /* Handle well-known communities, RFC 1997 */
   struct eattr *c;
   if (p->cf->interpret_communities &&
-      (c = ea_find(e->attrs->eattrs, EA_CODE(PROTOCOL_BGP, BA_COMMUNITY))))
+      (c = ea_find(e->attrs->eattrs, BGP_EA_ID(BA_COMMUNITY))))
   {
     const struct adata *d = c->u.ptr;
 
@@ -1880,7 +1908,7 @@ bgp_rt_notify(struct proto *P, struct channel *C, net *n, rte *new, rte *old)
 static inline u32
 bgp_get_neighbor(rte *r)
 {
-  eattr *e = ea_find(r->attrs->eattrs, EA_CODE(PROTOCOL_BGP, BA_AS_PATH));
+  eattr *e = ea_find(r->attrs->eattrs, BGP_EA_ID(BA_AS_PATH));
   u32 as;
 
   if (e && as_path_get_first_regular(e->u.ptr, &as))
@@ -1901,7 +1929,7 @@ rte_stale(rte *r)
     return 0;
 
   /* If staleness is unknown, compute and cache it */
-  eattr *a = ea_find(r->attrs->eattrs, EA_CODE(PROTOCOL_BGP, BA_COMMUNITY));
+  eattr *a = ea_find(r->attrs->eattrs, BGP_EA_ID(BA_COMMUNITY));
   if (a && int_set_contains(a->u.ptr, BGP_COMM_LLGR_STALE))
   {
     r->pflags |= BGP_REF_STALE;
@@ -1947,8 +1975,8 @@ bgp_rte_better(rte *new, rte *old)
     return 1;
 
  /* Start with local preferences */
-  x = ea_find(new->attrs->eattrs, EA_CODE(PROTOCOL_BGP, BA_LOCAL_PREF));
-  y = ea_find(old->attrs->eattrs, EA_CODE(PROTOCOL_BGP, BA_LOCAL_PREF));
+  x = ea_find(new->attrs->eattrs, BGP_EA_ID(BA_LOCAL_PREF));
+  y = ea_find(old->attrs->eattrs, BGP_EA_ID(BA_LOCAL_PREF));
   n = x ? x->u.data : new_bgp->cf->default_local_pref;
   o = y ? y->u.data : old_bgp->cf->default_local_pref;
   if (n > o)
@@ -1967,8 +1995,8 @@ bgp_rte_better(rte *new, rte *old)
   /* RFC 4271 9.1.2.2. a)  Use AS path lengths */
   if (new_bgp->cf->compare_path_lengths || old_bgp->cf->compare_path_lengths)
   {
-    x = ea_find(new->attrs->eattrs, EA_CODE(PROTOCOL_BGP, BA_AS_PATH));
-    y = ea_find(old->attrs->eattrs, EA_CODE(PROTOCOL_BGP, BA_AS_PATH));
+    x = ea_find(new->attrs->eattrs, BGP_EA_ID(BA_AS_PATH));
+    y = ea_find(old->attrs->eattrs, BGP_EA_ID(BA_AS_PATH));
     n = x ? as_path_getlen(x->u.ptr) : AS_PATH_MAXLEN;
     o = y ? as_path_getlen(y->u.ptr) : AS_PATH_MAXLEN;
     if (n < o)
@@ -1978,8 +2006,8 @@ bgp_rte_better(rte *new, rte *old)
   }
 
   /* RFC 4271 9.1.2.2. b) Use origins */
-  x = ea_find(new->attrs->eattrs, EA_CODE(PROTOCOL_BGP, BA_ORIGIN));
-  y = ea_find(old->attrs->eattrs, EA_CODE(PROTOCOL_BGP, BA_ORIGIN));
+  x = ea_find(new->attrs->eattrs, BGP_EA_ID(BA_ORIGIN));
+  y = ea_find(old->attrs->eattrs, BGP_EA_ID(BA_ORIGIN));
   n = x ? x->u.data : ORIGIN_INCOMPLETE;
   o = y ? y->u.data : ORIGIN_INCOMPLETE;
   if (n < o)
@@ -2001,8 +2029,8 @@ bgp_rte_better(rte *new, rte *old)
   if (new_bgp->cf->med_metric || old_bgp->cf->med_metric ||
       (bgp_get_neighbor(new) == bgp_get_neighbor(old)))
   {
-    x = ea_find(new->attrs->eattrs, EA_CODE(PROTOCOL_BGP, BA_MULTI_EXIT_DISC));
-    y = ea_find(old->attrs->eattrs, EA_CODE(PROTOCOL_BGP, BA_MULTI_EXIT_DISC));
+    x = ea_find(new->attrs->eattrs, BGP_EA_ID(BA_MULTI_EXIT_DISC));
+    y = ea_find(old->attrs->eattrs, BGP_EA_ID(BA_MULTI_EXIT_DISC));
     n = x ? x->u.data : new_bgp->cf->default_med;
     o = y ? y->u.data : old_bgp->cf->default_med;
     if (n < o)
@@ -2027,8 +2055,8 @@ bgp_rte_better(rte *new, rte *old)
 
   /* RFC 4271 9.1.2.2. f) Compare BGP identifiers */
   /* RFC 4456 9. a) Use ORIGINATOR_ID instead of local neighbor ID */
-  x = ea_find(new->attrs->eattrs, EA_CODE(PROTOCOL_BGP, BA_ORIGINATOR_ID));
-  y = ea_find(old->attrs->eattrs, EA_CODE(PROTOCOL_BGP, BA_ORIGINATOR_ID));
+  x = ea_find(new->attrs->eattrs, BGP_EA_ID(BA_ORIGINATOR_ID));
+  y = ea_find(old->attrs->eattrs, BGP_EA_ID(BA_ORIGINATOR_ID));
   n = x ? x->u.data : new_bgp->remote_id;
   o = y ? y->u.data : old_bgp->remote_id;
 
@@ -2045,8 +2073,8 @@ bgp_rte_better(rte *new, rte *old)
     return 0;
 
   /* RFC 4456 9. b) Compare cluster list lengths */
-  x = ea_find(new->attrs->eattrs, EA_CODE(PROTOCOL_BGP, BA_CLUSTER_LIST));
-  y = ea_find(old->attrs->eattrs, EA_CODE(PROTOCOL_BGP, BA_CLUSTER_LIST));
+  x = ea_find(new->attrs->eattrs, BGP_EA_ID(BA_CLUSTER_LIST));
+  y = ea_find(old->attrs->eattrs, BGP_EA_ID(BA_CLUSTER_LIST));
   n = x ? int_set_get_size(x->u.ptr) : 0;
   o = y ? int_set_get_size(y->u.ptr) : 0;
   if (n < o)
@@ -2080,8 +2108,8 @@ bgp_rte_mergable(rte *pri, rte *sec)
     return 0;
 
   /* Start with local preferences */
-  x = ea_find(pri->attrs->eattrs, EA_CODE(PROTOCOL_BGP, BA_LOCAL_PREF));
-  y = ea_find(sec->attrs->eattrs, EA_CODE(PROTOCOL_BGP, BA_LOCAL_PREF));
+  x = ea_find(pri->attrs->eattrs, BGP_EA_ID(BA_LOCAL_PREF));
+  y = ea_find(sec->attrs->eattrs, BGP_EA_ID(BA_LOCAL_PREF));
   p = x ? x->u.data : pri_bgp->cf->default_local_pref;
   s = y ? y->u.data : sec_bgp->cf->default_local_pref;
   if (p != s)
@@ -2090,8 +2118,8 @@ bgp_rte_mergable(rte *pri, rte *sec)
   /* RFC 4271 9.1.2.2. a)  Use AS path lengths */
   if (pri_bgp->cf->compare_path_lengths || sec_bgp->cf->compare_path_lengths)
   {
-    x = ea_find(pri->attrs->eattrs, EA_CODE(PROTOCOL_BGP, BA_AS_PATH));
-    y = ea_find(sec->attrs->eattrs, EA_CODE(PROTOCOL_BGP, BA_AS_PATH));
+    x = ea_find(pri->attrs->eattrs, BGP_EA_ID(BA_AS_PATH));
+    y = ea_find(sec->attrs->eattrs, BGP_EA_ID(BA_AS_PATH));
     p = x ? as_path_getlen(x->u.ptr) : AS_PATH_MAXLEN;
     s = y ? as_path_getlen(y->u.ptr) : AS_PATH_MAXLEN;
 
@@ -2103,8 +2131,8 @@ bgp_rte_mergable(rte *pri, rte *sec)
   }
 
   /* RFC 4271 9.1.2.2. b) Use origins */
-  x = ea_find(pri->attrs->eattrs, EA_CODE(PROTOCOL_BGP, BA_ORIGIN));
-  y = ea_find(sec->attrs->eattrs, EA_CODE(PROTOCOL_BGP, BA_ORIGIN));
+  x = ea_find(pri->attrs->eattrs, BGP_EA_ID(BA_ORIGIN));
+  y = ea_find(sec->attrs->eattrs, BGP_EA_ID(BA_ORIGIN));
   p = x ? x->u.data : ORIGIN_INCOMPLETE;
   s = y ? y->u.data : ORIGIN_INCOMPLETE;
   if (p != s)
@@ -2114,8 +2142,8 @@ bgp_rte_mergable(rte *pri, rte *sec)
   if (pri_bgp->cf->med_metric || sec_bgp->cf->med_metric ||
       (bgp_get_neighbor(pri) == bgp_get_neighbor(sec)))
   {
-    x = ea_find(pri->attrs->eattrs, EA_CODE(PROTOCOL_BGP, BA_MULTI_EXIT_DISC));
-    y = ea_find(sec->attrs->eattrs, EA_CODE(PROTOCOL_BGP, BA_MULTI_EXIT_DISC));
+    x = ea_find(pri->attrs->eattrs, BGP_EA_ID(BA_MULTI_EXIT_DISC));
+    y = ea_find(sec->attrs->eattrs, BGP_EA_ID(BA_MULTI_EXIT_DISC));
     p = x ? x->u.data : pri_bgp->cf->default_med;
     s = y ? y->u.data : sec_bgp->cf->default_med;
     if (p != s)
@@ -2281,7 +2309,7 @@ bgp_rte_recalculate(rtable *table, net *net, rte *new, rte *old, rte *old_best)
 struct rte *
 bgp_rte_modify_stale(struct rte *r, struct linpool *pool)
 {
-  eattr *a = ea_find(r->attrs->eattrs, EA_CODE(PROTOCOL_BGP, BA_COMMUNITY));
+  eattr *a = ea_find(r->attrs->eattrs, BGP_EA_ID(BA_COMMUNITY));
   const struct adata *ad = a ? a->u.ptr : NULL;
   uint flags = a ? a->flags : BAF_PARTIAL;
 
@@ -2346,37 +2374,11 @@ bgp_process_as4_attrs(ea_list **attrs, struct linpool *pool)
   }
 }
 
-int
-bgp_get_attr(const eattr *a, byte *buf, int buflen)
-{
-  uint i = EA_ID(a->id);
-  const struct bgp_attr_desc *d;
-  int len;
-
-  if (bgp_attr_known(i))
-  {
-    d = &bgp_attr_table[i];
-    len = bsprintf(buf, "%s", d->name);
-    buf += len;
-    if (d->format)
-    {
-      *buf++ = ':';
-      *buf++ = ' ';
-      d->format(a, buf, buflen - len - 2);
-      return GA_FULL;
-    }
-    return GA_NAME;
-  }
-
-  bsprintf(buf, "%02x%s", i, (a->flags & BAF_TRANSITIVE) ? " [t]" : "");
-  return GA_NAME;
-}
-
 void
 bgp_get_route_info(rte *e, byte *buf)
 {
-  eattr *p = ea_find(e->attrs->eattrs, EA_CODE(PROTOCOL_BGP, BA_AS_PATH));
-  eattr *o = ea_find(e->attrs->eattrs, EA_CODE(PROTOCOL_BGP, BA_ORIGIN));
+  eattr *p = ea_find(e->attrs->eattrs, BGP_EA_ID(BA_AS_PATH));
+  eattr *o = ea_find(e->attrs->eattrs, BGP_EA_ID(BA_ORIGIN));
   u32 origas;
 
   buf += bsprintf(buf, " (%d", e->attrs->pref);
diff --git a/proto/bgp/bgp.c b/proto/bgp/bgp.c
index aec78a45..bd4c68b7 100644
--- a/proto/bgp/bgp.c
+++ b/proto/bgp/bgp.c
@@ -2576,7 +2576,6 @@ struct channel_class channel_bgp = {
 struct protocol proto_bgp = {
   .name = 		"BGP",
   .template = 		"bgp%d",
-  .class =		PROTOCOL_BGP,
   .preference = 	DEF_PREF_BGP,
   .channel_mask =	NB_IP | NB_VPN | NB_FLOW,
   .proto_size =		sizeof(struct bgp_proto),
@@ -2588,7 +2587,6 @@ struct protocol proto_bgp = {
   .reconfigure = 	bgp_reconfigure,
   .copy_config = 	bgp_copy_config,
   .get_status = 	bgp_get_status,
-  .get_attr = 		bgp_get_attr,
   .get_route_info = 	bgp_get_route_info,
   .show_proto_info = 	bgp_show_proto_info
 };
@@ -2596,4 +2594,5 @@ struct protocol proto_bgp = {
 void bgp_build(void)
 {
   proto_build(&proto_bgp);
+  bgp_register_attrs();
 }
diff --git a/proto/bgp/bgp.h b/proto/bgp/bgp.h
index de5bd836..e04e3bd0 100644
--- a/proto/bgp/bgp.h
+++ b/proto/bgp/bgp.h
@@ -538,17 +538,13 @@ rte_resolvable(rte *rt)
 
 /* attrs.c */
 
-static inline eattr *
-bgp_find_attr(ea_list *attrs, uint code)
-{
-  return ea_find(attrs, EA_CODE(PROTOCOL_BGP, code));
-}
+eattr *
+bgp_find_attr(ea_list *attrs, uint code);
 
 void bgp_set_attr_u32(ea_list **to, uint code, uint flags, u32 val);
 void bgp_set_attr_ptr(ea_list **to, uint code, uint flags, const struct adata *ad);
 void bgp_set_attr_data(ea_list **to, uint code, uint flags, void *data, uint len);
-
-#define bgp_unset_attr(to, code) ea_unset_attr(to, 0, code)
+void bgp_unset_attr(ea_list **to, uint code);
 
 int bgp_encode_mp_reach_mrt(struct bgp_write_state *s, eattr *a, byte *buf, uint size);
 
@@ -573,7 +569,6 @@ struct rte *bgp_rte_modify_stale(struct rte *r, struct linpool *pool);
 u32 bgp_rte_igp_metric(struct rte *);
 void bgp_rt_notify(struct proto *P, struct channel *C, net *n, rte *new, rte *old);
 int bgp_preexport(struct proto *, struct rte *);
-int bgp_get_attr(const struct eattr *e, byte *buf, int buflen);
 void bgp_get_route_info(struct rte *, byte *buf);
 int bgp_total_aigp_metric_(rte *e, u64 *metric, const struct adata **ad);
 
@@ -590,6 +585,8 @@ bgp_total_aigp_metric(rte *r)
   return metric;
 }
 
+void bgp_register_attrs(void);
+
 
 /* packets.c */
 
@@ -626,26 +623,31 @@ void bgp_update_next_hop(struct bgp_export_state *s, eattr *a, ea_list **to);
 
 #define BAF_DECODE_FLAGS	0x0100	/* Private flag - attribute flags are handled by the decode hook */
 
-#define BA_ORIGIN		0x01	/* RFC 4271 */		/* WM */
-#define BA_AS_PATH		0x02				/* WM */
-#define BA_NEXT_HOP		0x03				/* WM */
-#define BA_MULTI_EXIT_DISC	0x04				/* ON */
-#define BA_LOCAL_PREF		0x05				/* WD */
-#define BA_ATOMIC_AGGR		0x06				/* WD */
-#define BA_AGGREGATOR		0x07				/* OT */
-#define BA_COMMUNITY		0x08	/* RFC 1997 */		/* OT */
-#define BA_ORIGINATOR_ID	0x09	/* RFC 4456 */		/* ON */
-#define BA_CLUSTER_LIST		0x0a	/* RFC 4456 */		/* ON */
-#define BA_MP_REACH_NLRI	0x0e	/* RFC 4760 */
-#define BA_MP_UNREACH_NLRI	0x0f	/* RFC 4760 */
-#define BA_EXT_COMMUNITY	0x10	/* RFC 4360 */
-#define BA_AS4_PATH             0x11	/* RFC 6793 */
-#define BA_AS4_AGGREGATOR       0x12	/* RFC 6793 */
-#define BA_AIGP			0x1a	/* RFC 7311 */
-#define BA_LARGE_COMMUNITY	0x20	/* RFC 8092 */
+enum bgp_attr_id {
+  BA_ORIGIN		= 0x01,	/* RFC 4271 */		/* WM */
+  BA_AS_PATH		= 0x02,				/* WM */
+  BA_NEXT_HOP		= 0x03,				/* WM */
+  BA_MULTI_EXIT_DISC	= 0x04,				/* ON */
+  BA_LOCAL_PREF		= 0x05,				/* WD */
+  BA_ATOMIC_AGGR	= 0x06,				/* WD */
+  BA_AGGREGATOR		= 0x07,				/* OT */
+  BA_COMMUNITY		= 0x08,	/* RFC 1997 */		/* OT */
+  BA_ORIGINATOR_ID	= 0x09,	/* RFC 4456 */		/* ON */
+  BA_CLUSTER_LIST	= 0x0a,	/* RFC 4456 */		/* ON */
+  BA_MP_REACH_NLRI	= 0x0e,	/* RFC 4760 */
+  BA_MP_UNREACH_NLRI	= 0x0f,	/* RFC 4760 */
+  BA_EXT_COMMUNITY	= 0x10,	/* RFC 4360 */
+  BA_AS4_PATH		= 0x11,	/* RFC 6793 */
+  BA_AS4_AGGREGATOR	= 0x12,	/* RFC 6793 */
+  BA_AIGP		= 0x1a,	/* RFC 7311 */
+  BA_LARGE_COMMUNITY	= 0x20,	/* RFC 8092 */
 
 /* Bird's private internal BGP attributes */
-#define BA_MPLS_LABEL_STACK	0xfe	/* MPLS label stack transfer attribute */
+  BA_MPLS_LABEL_STACK	= 0x100, /* MPLS label stack transfer attribute */
+
+/* Maximum */
+  BGP_ATTR_MAX,
+};
 
 /* BGP connection states */
 
diff --git a/proto/bgp/config.Y b/proto/bgp/config.Y
index 6a78f79b..db261bbb 100644
--- a/proto/bgp/config.Y
+++ b/proto/bgp/config.Y
@@ -316,36 +316,6 @@ bgp_channel_end:
 
 bgp_proto_channel: bgp_channel_start bgp_channel_opt_list bgp_channel_end;
 
-
-dynamic_attr: BGP_ORIGIN
-	{ $$ = f_new_dynamic_attr(T_ENUM_BGP_ORIGIN, EA_CODE(PROTOCOL_BGP, BA_ORIGIN)); } ;
-dynamic_attr: BGP_PATH
-	{ $$ = f_new_dynamic_attr(T_PATH, EA_CODE(PROTOCOL_BGP, BA_AS_PATH)); } ;
-dynamic_attr: BGP_NEXT_HOP
-	{ $$ = f_new_dynamic_attr(T_IP, EA_CODE(PROTOCOL_BGP, BA_NEXT_HOP)); } ;
-dynamic_attr: BGP_MED
-	{ $$ = f_new_dynamic_attr(T_INT, EA_CODE(PROTOCOL_BGP, BA_MULTI_EXIT_DISC)); } ;
-dynamic_attr: BGP_LOCAL_PREF
-	{ $$ = f_new_dynamic_attr(T_INT, EA_CODE(PROTOCOL_BGP, BA_LOCAL_PREF)); } ;
-dynamic_attr: BGP_ATOMIC_AGGR
-	{ $$ = f_new_dynamic_attr(T_OPAQUE, EA_CODE(PROTOCOL_BGP, BA_ATOMIC_AGGR)); } ;
-dynamic_attr: BGP_AGGREGATOR
-	{ $$ = f_new_dynamic_attr(T_OPAQUE, EA_CODE(PROTOCOL_BGP, BA_AGGREGATOR)); } ;
-dynamic_attr: BGP_COMMUNITY
-	{ $$ = f_new_dynamic_attr(T_CLIST, EA_CODE(PROTOCOL_BGP, BA_COMMUNITY)); } ;
-dynamic_attr: BGP_ORIGINATOR_ID
-	{ $$ = f_new_dynamic_attr(T_QUAD, EA_CODE(PROTOCOL_BGP, BA_ORIGINATOR_ID)); } ;
-dynamic_attr: BGP_CLUSTER_LIST
-	{ $$ = f_new_dynamic_attr(T_CLIST, EA_CODE(PROTOCOL_BGP, BA_CLUSTER_LIST)); } ;
-dynamic_attr: BGP_EXT_COMMUNITY
-	{ $$ = f_new_dynamic_attr(T_ECLIST, EA_CODE(PROTOCOL_BGP, BA_EXT_COMMUNITY)); } ;
-dynamic_attr: BGP_AIGP
-	{ $$ = f_new_dynamic_attr(T_OPAQUE, EA_CODE(PROTOCOL_BGP, BA_AIGP)); } ;
-dynamic_attr: BGP_LARGE_COMMUNITY
-	{ $$ = f_new_dynamic_attr(T_LCLIST, EA_CODE(PROTOCOL_BGP, BA_LARGE_COMMUNITY)); } ;
-
-
-
 CF_ENUM(T_ENUM_BGP_ORIGIN, ORIGIN_, IGP, EGP, INCOMPLETE)
 
 CF_CODE
diff --git a/proto/mrt/mrt.c b/proto/mrt/mrt.c
index c595f298..e45f7cb7 100644
--- a/proto/mrt/mrt.c
+++ b/proto/mrt/mrt.c
@@ -907,7 +907,6 @@ mrt_copy_config(struct proto_config *dest UNUSED, struct proto_config *src UNUSE
 struct protocol proto_mrt = {
   .name =		"MRT",
   .template =		"mrt%d",
-  .class =		PROTOCOL_MRT,
   .proto_size =		sizeof(struct mrt_proto),
   .config_size =	sizeof(struct mrt_config),
   .init =		mrt_init,
diff --git a/proto/ospf/config.Y b/proto/ospf/config.Y
index a8972d2c..136e1dcb 100644
--- a/proto/ospf/config.Y
+++ b/proto/ospf/config.Y
@@ -505,11 +505,6 @@ ospf_iface:
   ospf_iface_start ospf_iface_patt_list ospf_iface_opt_list { ospf_iface_finish(); }
  ;
 
-dynamic_attr: OSPF_METRIC1 { $$ = f_new_dynamic_attr(T_INT, EA_OSPF_METRIC1); } ;
-dynamic_attr: OSPF_METRIC2 { $$ = f_new_dynamic_attr(T_INT, EA_OSPF_METRIC2); } ;
-dynamic_attr: OSPF_TAG { $$ = f_new_dynamic_attr(T_INT, EA_OSPF_TAG); } ;
-dynamic_attr: OSPF_ROUTER_ID { $$ = f_new_dynamic_attr(T_QUAD, EA_OSPF_ROUTER_ID); } ;
-
 CF_CLI_HELP(SHOW OSPF, ..., [[Show information about OSPF protocol]]);
 CF_CLI(SHOW OSPF, optproto, [<name>], [[Show information about OSPF protocol]])
 { PROTO_WALK_CMD($3, &proto_ospf, p) ospf_sh(p); };
diff --git a/proto/ospf/ospf.c b/proto/ospf/ospf.c
index d8bcc838..66d0eba6 100644
--- a/proto/ospf/ospf.c
+++ b/proto/ospf/ospf.c
@@ -106,6 +106,7 @@
 
 #include <stdlib.h>
 #include "ospf.h"
+#include "lib/macro.h"
 
 static int ospf_preexport(struct proto *P, rte *new);
 static void ospf_reload_routes(struct channel *C);
@@ -386,7 +387,7 @@ ospf_init(struct proto_config *CF)
 static int
 ospf_rte_better(struct rte *new, struct rte *old)
 {
-  u32 new_metric1 = ea_get_int(new->attrs->eattrs, EA_OSPF_METRIC1, LSINFINITY);
+  u32 new_metric1 = ea_get_int(new->attrs->eattrs, &ea_ospf_metric1, LSINFINITY);
 
   if (new_metric1 == LSINFINITY)
     return 0;
@@ -396,13 +397,13 @@ ospf_rte_better(struct rte *new, struct rte *old)
 
   if(new->attrs->source == RTS_OSPF_EXT2)
   {
-    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);
+    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;
   }
 
-  u32 old_metric1 = ea_get_int(old->attrs->eattrs, EA_OSPF_METRIC1, LSINFINITY);
+  u32 old_metric1 = ea_get_int(old->attrs->eattrs, &ea_ospf_metric1, LSINFINITY);
   if (new_metric1 < old_metric1)
     return 1;
 
@@ -415,7 +416,7 @@ ospf_rte_igp_metric(struct rte *rt)
   if (rt->attrs->source == RTS_OSPF_EXT2)
     return IGP_METRIC_UNKNOWN;
 
-  return ea_get_int(rt->attrs->eattrs, EA_OSPF_METRIC1, LSINFINITY);
+  return ea_get_int(rt->attrs->eattrs, &ea_ospf_metric1, LSINFINITY);
 }
 
 void
@@ -587,42 +588,26 @@ ospf_get_route_info(rte * rte, byte * buf)
   }
 
   buf += bsprintf(buf, " %s", type);
-  buf += bsprintf(buf, " (%d/%d", rte->attrs->pref, ea_get_int(rte->attrs->eattrs, EA_OSPF_METRIC1, LSINFINITY));
+  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", ea_get_int(rte->attrs->eattrs, EA_OSPF_METRIC2, LSINFINITY));
+    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)
   {
-    eattr *ea = ea_find(rte->attrs->eattrs, EA_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);
   }
   
-  eattr *ea = ea_find(rte->attrs->eattrs, EA_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
-ospf_get_attr(const eattr * a, byte * buf, int buflen UNUSED)
+static void
+ospf_tag_format(const eattr * a, byte * buf, uint buflen)
 {
-  switch (a->id)
-  {
-  case EA_OSPF_METRIC1:
-    bsprintf(buf, "metric1");
-    return GA_NAME;
-  case EA_OSPF_METRIC2:
-    bsprintf(buf, "metric2");
-    return GA_NAME;
-  case EA_OSPF_TAG:
-    bsprintf(buf, "tag: 0x%08x", a->u.data);
-    return GA_FULL;
-  case EA_OSPF_ROUTER_ID:
-    bsprintf(buf, "router_id");
-    return GA_NAME;
-  default:
-    return GA_UNKNOWN;
-  }
+  bsnprintf(buf, buflen, "0x%08x", a->u.data);
 }
 
 static void
@@ -1520,7 +1505,6 @@ ospf_sh_lsadb(struct lsadb_show_data *ld)
 struct protocol proto_ospf = {
   .name =		"OSPF",
   .template =		"ospf%d",
-  .class =		PROTOCOL_OSPF,
   .preference =		DEF_PREF_OSPF,
   .channel_mask =	NB_IP,
   .proto_size =		sizeof(struct ospf_proto),
@@ -1531,12 +1515,39 @@ struct protocol proto_ospf = {
   .shutdown =		ospf_shutdown,
   .reconfigure =	ospf_reconfigure,
   .get_status =		ospf_get_status,
-  .get_attr =		ospf_get_attr,
   .get_route_info =	ospf_get_route_info
 };
 
+struct ea_class ea_ospf_metric1 = {
+  .name = "ospf_metric1",
+  .type = T_INT,
+};
+
+struct ea_class ea_ospf_metric2 = {
+  .name = "ospf_metric2",
+  .type = T_INT,
+};
+
+struct ea_class ea_ospf_tag = {
+  .name = "ospf_tag",
+  .type = T_INT,
+  .format = ospf_tag_format,
+};
+
+struct ea_class ea_ospf_router_id = {
+  .name = "ospf_router_id",
+  .type = T_QUAD,
+};
+
 void
 ospf_build(void)
 {
   proto_build(&proto_ospf);
+
+  EA_REGISTER_ALL(
+      &ea_ospf_metric1,
+      &ea_ospf_metric2,
+      &ea_ospf_tag,
+      &ea_ospf_router_id
+  );
 }
diff --git a/proto/ospf/ospf.h b/proto/ospf/ospf.h
index 3d0d57d9..7bed5c85 100644
--- a/proto/ospf/ospf.h
+++ b/proto/ospf/ospf.h
@@ -939,12 +939,7 @@ struct lsadb_show_data {
   u32 router;		/* Advertising router, 0 -> all */
 };
 
-
-#define EA_OSPF_METRIC1	EA_CODE(PROTOCOL_OSPF, 0)
-#define EA_OSPF_METRIC2	EA_CODE(PROTOCOL_OSPF, 1)
-#define EA_OSPF_TAG	EA_CODE(PROTOCOL_OSPF, 2)
-#define EA_OSPF_ROUTER_ID EA_CODE(PROTOCOL_OSPF, 3)
-
+extern struct ea_class ea_ospf_metric1, ea_ospf_metric2, ea_ospf_tag, ea_ospf_router_id;
 
 /*
  * For regular networks, neighbor address must match network prefix.
diff --git a/proto/ospf/rt.c b/proto/ospf/rt.c
index 5969b7c7..55bad599 100644
--- a/proto/ospf/rt.c
+++ b/proto/ospf/rt.c
@@ -2075,18 +2075,18 @@ again1:
 	eattrs.l = (ea_list) {};
 
 	eattrs.a[eattrs.l.count++] =
-	  EA_LITERAL_EMBEDDED(EA_OSPF_METRIC1, T_INT, 0, nf->n.metric1);
+	  EA_LITERAL_EMBEDDED(&ea_ospf_metric1, 0, nf->n.metric1);
 
 	if (nf->n.type == RTS_OSPF_EXT2)
 	  eattrs.a[eattrs.l.count++] =
-	    EA_LITERAL_EMBEDDED(EA_OSPF_METRIC2, T_INT, 0, nf->n.metric2);
+	    EA_LITERAL_EMBEDDED(&ea_ospf_metric2, 0, nf->n.metric2);
 
 	if ((nf->n.type == RTS_OSPF_EXT1) || (nf->n.type == RTS_OSPF_EXT2))
 	  eattrs.a[eattrs.l.count++] =
-	    EA_LITERAL_EMBEDDED(EA_OSPF_TAG, T_INT, 0, nf->n.tag);
+	    EA_LITERAL_EMBEDDED(&ea_ospf_tag, 0, nf->n.tag);
 
 	eattrs.a[eattrs.l.count++] =
-	  EA_LITERAL_EMBEDDED(EA_OSPF_ROUTER_ID, T_QUAD, 0, nf->n.rid);
+	  EA_LITERAL_EMBEDDED(&ea_ospf_router_id, 0, nf->n.rid);
 
 	a0.eattrs = &eattrs.l;
 
diff --git a/proto/ospf/topology.c b/proto/ospf/topology.c
index 9fe68264..db423dc8 100644
--- a/proto/ospf/topology.c
+++ b/proto/ospf/topology.c
@@ -1338,8 +1338,8 @@ ospf_rt_notify(struct proto *P, struct channel *ch UNUSED, net *n, rte *new, rte
 
   /* Get route attributes */
   rta *a = new->attrs;
-  eattr *m1a = ea_find(a->eattrs, EA_OSPF_METRIC1);
-  eattr *m2a = ea_find(a->eattrs, EA_OSPF_METRIC2);
+  eattr *m1a = ea_find(a->eattrs, &ea_ospf_metric1);
+  eattr *m2a = ea_find(a->eattrs, &ea_ospf_metric2);
   uint m1 = m1a ? m1a->u.data : 0;
   uint m2 = m2a ? m2a->u.data : 10000;
 
@@ -1363,7 +1363,7 @@ ospf_rt_notify(struct proto *P, struct channel *ch UNUSED, net *n, rte *new, rte
 
   uint ebit = m2a || !m1a;
   uint metric = ebit ? m2 : m1;
-  uint tag = ea_get_int(a->eattrs, EA_OSPF_TAG, 0);
+  uint tag = ea_get_int(a->eattrs, &ea_ospf_tag, 0);
 
   ip_addr fwd = IPA_NONE;
   if ((a->dest == RTD_UNICAST) && use_gw_for_fwaddr(p, a->nh.gw, a->nh.iface))
diff --git a/proto/perf/perf.c b/proto/perf/perf.c
index dde7e473..2978100b 100644
--- a/proto/perf/perf.c
+++ b/proto/perf/perf.c
@@ -306,7 +306,6 @@ perf_copy_config(struct proto_config *dest UNUSED, struct proto_config *src UNUS
 struct protocol proto_perf = {
   .name = 		"Perf",
   .template =		"perf%d",
-  .class =		PROTOCOL_PERF,
   .channel_mask = 	NB_IP,
   .proto_size =		sizeof(struct perf_proto),
   .config_size = 	sizeof(struct perf_config),
diff --git a/proto/pipe/pipe.c b/proto/pipe/pipe.c
index 483ece67..7a39beff 100644
--- a/proto/pipe/pipe.c
+++ b/proto/pipe/pipe.c
@@ -293,7 +293,6 @@ pipe_update_debug(struct proto *P)
 struct protocol proto_pipe = {
   .name =		"Pipe",
   .template =		"pipe%d",
-  .class =		PROTOCOL_PIPE,
   .proto_size =		sizeof(struct pipe_proto),
   .config_size =	sizeof(struct pipe_config),
   .postconfig =		pipe_postconfig,
diff --git a/proto/radv/config.Y b/proto/radv/config.Y
index 0a339cb4..f40fdcca 100644
--- a/proto/radv/config.Y
+++ b/proto/radv/config.Y
@@ -336,9 +336,6 @@ radv_sensitive:
  | SENSITIVE bool { $$ = $2; }
  ;
 
-dynamic_attr: RA_PREFERENCE { $$ = f_new_dynamic_attr(T_ENUM_RA_PREFERENCE, EA_RA_PREFERENCE); } ;
-dynamic_attr: RA_LIFETIME { $$ = f_new_dynamic_attr(T_INT, EA_RA_LIFETIME); } ;
-
 CF_CODE
 
 CF_END
diff --git a/proto/radv/radv.c b/proto/radv/radv.c
index 7985997a..5734dbc9 100644
--- a/proto/radv/radv.c
+++ b/proto/radv/radv.c
@@ -10,6 +10,7 @@
 
 #include <stdlib.h>
 #include "radv.h"
+#include "lib/macro.h"
 
 /**
  * DOC: Router Advertisements
@@ -42,6 +43,8 @@
  * RFC 6106 - DNS extensions (RDDNS, DNSSL)
  */
 
+static struct ea_class ea_radv_preference, ea_radv_lifetime;
+
 static void radv_prune_prefixes(struct radv_iface *ifa);
 static void radv_prune_routes(struct radv_proto *p);
 
@@ -444,11 +447,11 @@ radv_rt_notify(struct proto *P, struct channel *ch UNUSED, net *n, rte *new, rte
   {
     /* Update */
 
-    ea = ea_find(new->attrs->eattrs, EA_RA_PREFERENCE);
+    ea = ea_find(new->attrs->eattrs, &ea_radv_preference);
     uint preference = ea ? ea->u.data : RA_PREF_MEDIUM;
     uint preference_set = !!ea;
 
-    ea = ea_find(new->attrs->eattrs, EA_RA_LIFETIME);
+    ea = ea_find(new->attrs->eattrs, &ea_radv_lifetime);
     uint lifetime = ea ? ea->u.data : 0;
     uint lifetime_set = !!ea;
 
@@ -738,27 +741,26 @@ radv_pref_str(u32 pref)
   }
 }
 
-/* The buffer has some minimal size */
-static int
-radv_get_attr(const eattr *a, byte *buf, int buflen UNUSED)
+static void
+radv_preference_format(const eattr *a, byte *buf, uint buflen)
 {
-  switch (a->id)
-  {
-  case EA_RA_PREFERENCE:
-    bsprintf(buf, "preference: %s", radv_pref_str(a->u.data));
-    return GA_FULL;
-  case EA_RA_LIFETIME:
-    bsprintf(buf, "lifetime");
-    return GA_NAME;
-  default:
-    return GA_UNKNOWN;
-  }
+  bsnprintf(buf, buflen, "%s", radv_pref_str(a->u.data));
 }
 
+static struct ea_class ea_radv_preference = {
+  .name = "radv_preference",
+  .type = T_ENUM_RA_PREFERENCE,
+  .format = radv_preference_format,
+};
+
+static struct ea_class ea_radv_lifetime = {
+  .name = "radv_lifetime",
+  .type = T_INT,
+};
+
 struct protocol proto_radv = {
   .name =		"RAdv",
   .template =		"radv%d",
-  .class =		PROTOCOL_RADV,
   .channel_mask =	NB_IP6,
   .proto_size =		sizeof(struct radv_proto),
   .config_size =	sizeof(struct radv_config),
@@ -769,11 +771,15 @@ struct protocol proto_radv = {
   .reconfigure =	radv_reconfigure,
   .copy_config =	radv_copy_config,
   .get_status =		radv_get_status,
-  .get_attr =		radv_get_attr
 };
 
 void
 radv_build(void)
 {
   proto_build(&proto_radv);
+
+  EA_REGISTER_ALL(
+      &ea_radv_preference,
+      &ea_radv_lifetime
+      );
 }
diff --git a/proto/radv/radv.h b/proto/radv/radv.h
index 5cca3aca..c9219bda 100644
--- a/proto/radv/radv.h
+++ b/proto/radv/radv.h
@@ -195,10 +195,6 @@ struct radv_iface
 #define RA_PREF_HIGH	0x08
 #define RA_PREF_MASK	0x18
 
-/* Attributes */
-#define EA_RA_PREFERENCE	EA_CODE(PROTOCOL_RADV, 0)
-#define EA_RA_LIFETIME		EA_CODE(PROTOCOL_RADV, 1)
-
 #ifdef LOCAL_DEBUG
 #define RADV_FORCE_DEBUG 1
 #else
diff --git a/proto/rip/config.Y b/proto/rip/config.Y
index 3934d337..234e9029 100644
--- a/proto/rip/config.Y
+++ b/proto/rip/config.Y
@@ -190,9 +190,6 @@ rip_iface:
   rip_iface_start iface_patt_list_nopx rip_iface_opt_list rip_iface_finish;
 
 
-dynamic_attr: RIP_METRIC { $$ = f_new_dynamic_attr(T_INT, EA_RIP_METRIC); } ;
-dynamic_attr: RIP_TAG { $$ = f_new_dynamic_attr(T_INT, EA_RIP_TAG); } ;
-
 CF_CLI_HELP(SHOW RIP, ..., [[Show information about RIP protocol]]);
 
 CF_CLI(SHOW RIP INTERFACES, optproto opttext, [<name>] [\"<interface>\"], [[Show information about RIP interfaces]])
diff --git a/proto/rip/rip.c b/proto/rip/rip.c
index 2b5babcb..52a3bd2c 100644
--- a/proto/rip/rip.c
+++ b/proto/rip/rip.c
@@ -78,6 +78,7 @@
 
 #include <stdlib.h>
 #include "rip.h"
+#include "lib/macro.h"
 
 
 static inline void rip_lock_neighbor(struct rip_neighbor *n);
@@ -88,6 +89,7 @@ static inline void rip_iface_kick_timer(struct rip_iface *ifa);
 static void rip_iface_timer(timer *timer);
 static void rip_trigger_update(struct rip_proto *p);
 
+static struct ea_class ea_rip_metric, ea_rip_tag, ea_rip_from;
 
 /*
  *	RIP routes
@@ -200,9 +202,9 @@ rip_announce_rte(struct rip_proto *p, struct rip_entry *en)
     } ea_block = {
       .l.count = 3,
       .a = {
-	EA_LITERAL_EMBEDDED(EA_RIP_METRIC, T_INT, 0, rt_metric),
-	EA_LITERAL_EMBEDDED(EA_RIP_TAG, T_INT, 0, rt_tag),
-	EA_LITERAL_DIRECT_ADATA(EA_RIP_FROM, T_IFACE, 0, &ea_block.riad.ad),
+	EA_LITERAL_EMBEDDED(&ea_rip_metric, 0, rt_metric),
+	EA_LITERAL_EMBEDDED(&ea_rip_tag, 0, rt_tag),
+	EA_LITERAL_DIRECT_ADATA(&ea_rip_from, 0, &ea_block.riad.ad),
       },
       .riad = {
 	.ad = { .length = sizeof(struct rip_iface_adata) - sizeof(struct adata) },
@@ -326,9 +328,9 @@ rip_rt_notify(struct proto *P, struct channel *ch UNUSED, struct network *net, s
   if (new)
   {
     /* Update */
-    u32 rt_tag = ea_get_int(new->attrs->eattrs, EA_RIP_TAG, 0);
-    u32 rt_metric = ea_get_int(new->attrs->eattrs, EA_RIP_METRIC, 1);
-    const eattr *rie = ea_find(new->attrs->eattrs, EA_RIP_FROM);
+    u32 rt_tag = ea_get_int(new->attrs->eattrs, &ea_rip_tag, 0);
+    u32 rt_metric = ea_get_int(new->attrs->eattrs, &ea_rip_metric, 1);
+    const eattr *rie = ea_find(new->attrs->eattrs, &ea_rip_from);
     struct iface *rt_from = rie ? ((struct rip_iface_adata *) rie->u.ptr)->iface : NULL;
 
     if (rt_metric > p->infinity)
@@ -1095,8 +1097,8 @@ rip_rte_better(struct rte *new, struct rte *old)
   ASSERT_DIE(new->src == old->src);
   struct rip_proto *p = (struct rip_proto *) new->src->proto;
 
-  u32 new_metric = ea_get_int(new->attrs->eattrs, EA_RIP_METRIC, p->infinity);
-  u32 old_metric = ea_get_int(old->attrs->eattrs, EA_RIP_METRIC, p->infinity);
+  u32 new_metric = ea_get_int(new->attrs->eattrs, &ea_rip_metric, p->infinity);
+  u32 old_metric = ea_get_int(old->attrs->eattrs, &ea_rip_metric, p->infinity);
 
   return new_metric < old_metric;
 }
@@ -1104,7 +1106,7 @@ rip_rte_better(struct rte *new, struct rte *old)
 static u32
 rip_rte_igp_metric(struct rte *rt)
 {
-  return ea_get_int(rt->attrs->eattrs, EA_RIP_METRIC, IGP_METRIC_UNKNOWN);
+  return ea_get_int(rt->attrs->eattrs, &ea_rip_metric, IGP_METRIC_UNKNOWN);
 }
 
 static void
@@ -1205,8 +1207,8 @@ static void
 rip_get_route_info(rte *rte, byte *buf)
 {
   struct rip_proto *p = (struct rip_proto *) rte->src->proto;
-  u32 rt_metric = ea_get_int(rte->attrs->eattrs, EA_RIP_METRIC, p->infinity);
-  u32 rt_tag = ea_get_int(rte->attrs->eattrs, EA_RIP_TAG, 0);
+  u32 rt_metric = ea_get_int(rte->attrs->eattrs, &ea_rip_metric, p->infinity);
+  u32 rt_tag = ea_get_int(rte->attrs->eattrs, &ea_rip_tag, 0);
 
   buf += bsprintf(buf, " (%d/%d)", rte->attrs->pref, rt_metric);
 
@@ -1214,23 +1216,28 @@ rip_get_route_info(rte *rte, byte *buf)
     bsprintf(buf, " [%04x]", rt_tag);
 }
 
-static int
-rip_get_attr(const eattr *a, byte *buf, int buflen UNUSED)
+static void
+rip_tag_format(const eattr *a, byte *buf, uint buflen)
 {
-  switch (a->id)
-  {
-  case EA_RIP_METRIC:
-    bsprintf(buf, "metric: %d", a->u.data);
-    return GA_FULL;
+  bsnprintf(buf, buflen, "tag: %04x", a->u.data);
+}
 
-  case EA_RIP_TAG:
-    bsprintf(buf, "tag: %04x", a->u.data);
-    return GA_FULL;
+static struct ea_class ea_rip_metric = {
+  .name = "rip_metric",
+  .type = T_INT,
+};
 
-  default:
-    return GA_UNKNOWN;
-  }
-}
+static struct ea_class ea_rip_tag = {
+  .name = "rip_tag",
+  .type = T_INT,
+  .format = rip_tag_format,
+};
+
+static struct ea_class ea_rip_from = {
+  .name = "rip_from",
+  .type = T_IFACE,
+  .readonly = 1,
+};
 
 void
 rip_show_interfaces(struct proto *P, const char *iff)
@@ -1334,7 +1341,6 @@ rip_dump(struct proto *P)
 struct protocol proto_rip = {
   .name =		"RIP",
   .template =		"rip%d",
-  .class =		PROTOCOL_RIP,
   .preference =		DEF_PREF_RIP,
   .channel_mask =	NB_IP,
   .proto_size =		sizeof(struct rip_proto),
@@ -1346,11 +1352,16 @@ struct protocol proto_rip = {
   .shutdown =		rip_shutdown,
   .reconfigure =	rip_reconfigure,
   .get_route_info =	rip_get_route_info,
-  .get_attr =		rip_get_attr
 };
 
 void
 rip_build(void)
 {
   proto_build(&proto_rip);
+
+  EA_REGISTER_ALL(
+      &ea_rip_metric,
+      &ea_rip_tag,
+      &ea_rip_from
+      );
 }
diff --git a/proto/rip/rip.h b/proto/rip/rip.h
index a6fa3326..a01f8d3b 100644
--- a/proto/rip/rip.h
+++ b/proto/rip/rip.h
@@ -195,10 +195,6 @@ struct rip_rte
 #define RIP_ENTRY_VALID		1	/* Valid outgoing route */
 #define RIP_ENTRY_STALE		2	/* Stale outgoing route, waiting for GC */
 
-#define EA_RIP_METRIC		EA_CODE(PROTOCOL_RIP, 0)
-#define EA_RIP_TAG		EA_CODE(PROTOCOL_RIP, 1)
-#define EA_RIP_FROM		EA_CODE(PROTOCOL_RIP, 2)
-
 static inline int rip_is_v2(struct rip_proto *p)
 { return p->rip2; }
 
diff --git a/proto/rpki/rpki.c b/proto/rpki/rpki.c
index 6e111a81..d4e95a83 100644
--- a/proto/rpki/rpki.c
+++ b/proto/rpki/rpki.c
@@ -935,7 +935,6 @@ rpki_copy_config(struct proto_config *dest UNUSED, struct proto_config *src UNUS
 struct protocol proto_rpki = {
   .name = 		"RPKI",
   .template = 		"rpki%d",
-  .class =		PROTOCOL_RPKI,
   .preference = 	DEF_PREF_RPKI,
   .proto_size = 	sizeof(struct rpki_proto),
   .config_size =	sizeof(struct rpki_config),
diff --git a/proto/static/static.c b/proto/static/static.c
index 42febcd4..090ec875 100644
--- a/proto/static/static.c
+++ b/proto/static/static.c
@@ -408,16 +408,16 @@ static_reload_routes(struct channel *C)
 static int
 static_rte_better(rte *new, rte *old)
 {
-  u32 n = ea_get_int(new->attrs->eattrs, EA_GEN_IGP_METRIC, IGP_METRIC_UNKNOWN);
-  u32 o = ea_get_int(old->attrs->eattrs, EA_GEN_IGP_METRIC, IGP_METRIC_UNKNOWN);
+  u32 n = ea_get_int(new->attrs->eattrs, &ea_gen_igp_metric, IGP_METRIC_UNKNOWN);
+  u32 o = ea_get_int(old->attrs->eattrs, &ea_gen_igp_metric, IGP_METRIC_UNKNOWN);
   return n < o;
 }
 
 static int
 static_rte_mergable(rte *pri, rte *sec)
 {
-  u32 a = ea_get_int(pri->attrs->eattrs, EA_GEN_IGP_METRIC, IGP_METRIC_UNKNOWN);
-  u32 b = ea_get_int(sec->attrs->eattrs, EA_GEN_IGP_METRIC, IGP_METRIC_UNKNOWN);
+  u32 a = ea_get_int(pri->attrs->eattrs, &ea_gen_igp_metric, IGP_METRIC_UNKNOWN);
+  u32 b = ea_get_int(sec->attrs->eattrs, &ea_gen_igp_metric, IGP_METRIC_UNKNOWN);
   return a == b;
 }
 
@@ -711,7 +711,7 @@ static_copy_config(struct proto_config *dest, struct proto_config *src)
 static void
 static_get_route_info(rte *rte, byte *buf)
 {
-  eattr *a = ea_find(rte->attrs->eattrs, EA_GEN_IGP_METRIC);
+  eattr *a = ea_find(rte->attrs->eattrs, &ea_gen_igp_metric);
   if (a)
     buf += bsprintf(buf, " (%d/%u)", rte->attrs->pref, a->u.data);
   else
@@ -769,7 +769,6 @@ static_show(struct proto *P)
 struct protocol proto_static = {
   .name =		"Static",
   .template =		"static%d",
-  .class =		PROTOCOL_STATIC,
   .preference =		DEF_PREF_STATIC,
   .channel_mask =	NB_ANY,
   .proto_size =		sizeof(struct static_proto),
diff --git a/sysdep/linux/krt-sys.h b/sysdep/linux/krt-sys.h
index 8897f889..aa90f6e4 100644
--- a/sysdep/linux/krt-sys.h
+++ b/sysdep/linux/krt-sys.h
@@ -34,38 +34,6 @@ static inline struct ifa * kif_get_primary_ip(struct iface *i UNUSED) { return N
 
 #define KRT_ALLOW_MERGE_PATHS	1
 
-#define EA_KRT_PREFSRC		EA_CODE(PROTOCOL_KERNEL, 0x10)
-#define EA_KRT_REALM		EA_CODE(PROTOCOL_KERNEL, 0x11)
-#define EA_KRT_SCOPE		EA_CODE(PROTOCOL_KERNEL, 0x12)
-
-
-#define KRT_METRICS_MAX		0x10	/* RTAX_QUICKACK+1 */
-#define KRT_METRICS_OFFSET	0x20	/* Offset of EA_KRT_* vs RTAX_* */
-
-#define KRT_FEATURES_MAX	4
-
-/*
- * Following attributes are parts of RTA_METRICS kernel route attribute, their
- * ids must be consistent with their RTAX_* constants (+ KRT_METRICS_OFFSET)
- */
-#define EA_KRT_METRICS		EA_CODE(PROTOCOL_KERNEL, 0x20)	/* Dummy one */
-#define EA_KRT_LOCK		EA_CODE(PROTOCOL_KERNEL, 0x21)
-#define EA_KRT_MTU		EA_CODE(PROTOCOL_KERNEL, 0x22)
-#define EA_KRT_WINDOW		EA_CODE(PROTOCOL_KERNEL, 0x23)
-#define EA_KRT_RTT		EA_CODE(PROTOCOL_KERNEL, 0x24)
-#define EA_KRT_RTTVAR		EA_CODE(PROTOCOL_KERNEL, 0x25)
-#define EA_KRT_SSTRESH		EA_CODE(PROTOCOL_KERNEL, 0x26)
-#define EA_KRT_CWND		EA_CODE(PROTOCOL_KERNEL, 0x27)
-#define EA_KRT_ADVMSS		EA_CODE(PROTOCOL_KERNEL, 0x28)
-#define EA_KRT_REORDERING 	EA_CODE(PROTOCOL_KERNEL, 0x29)
-#define EA_KRT_HOPLIMIT		EA_CODE(PROTOCOL_KERNEL, 0x2a)
-#define EA_KRT_INITCWND		EA_CODE(PROTOCOL_KERNEL, 0x2b)
-#define EA_KRT_FEATURES		EA_CODE(PROTOCOL_KERNEL, 0x2c)
-#define EA_KRT_RTO_MIN		EA_CODE(PROTOCOL_KERNEL, 0x2d)
-#define EA_KRT_INITRWND		EA_CODE(PROTOCOL_KERNEL, 0x2e)
-#define EA_KRT_QUICKACK		EA_CODE(PROTOCOL_KERNEL, 0x2f)
-
-
 struct krt_params {
   u32 table_id;				/* Kernel table ID we sync with */
   u32 metric;				/* Kernel metric used for all routes */
diff --git a/sysdep/linux/netlink.Y b/sysdep/linux/netlink.Y
index f31b88c7..17e17789 100644
--- a/sysdep/linux/netlink.Y
+++ b/sysdep/linux/netlink.Y
@@ -28,39 +28,22 @@ kern_sys_item:
  | NETLINK RX BUFFER expr { THIS_KRT->sys.netlink_rx_buffer = $4; }
  ;
 
-dynamic_attr: KRT_PREFSRC	{ $$ = f_new_dynamic_attr(T_IP, EA_KRT_PREFSRC); } ;
-dynamic_attr: KRT_REALM	{ $$ = f_new_dynamic_attr(T_INT, EA_KRT_REALM); } ;
-dynamic_attr: KRT_SCOPE	{ $$ = f_new_dynamic_attr(T_INT, EA_KRT_SCOPE); } ;
-
-dynamic_attr: KRT_MTU		{ $$ = f_new_dynamic_attr(T_INT, EA_KRT_MTU); } ;
-dynamic_attr: KRT_WINDOW	{ $$ = f_new_dynamic_attr(T_INT, EA_KRT_WINDOW); } ;
-dynamic_attr: KRT_RTT		{ $$ = f_new_dynamic_attr(T_INT, EA_KRT_RTT); } ;
-dynamic_attr: KRT_RTTVAR	{ $$ = f_new_dynamic_attr(T_INT, EA_KRT_RTTVAR); } ;
-dynamic_attr: KRT_SSTRESH	{ $$ = f_new_dynamic_attr(T_INT, EA_KRT_SSTRESH); } ;
-dynamic_attr: KRT_CWND		{ $$ = f_new_dynamic_attr(T_INT, EA_KRT_CWND); } ;
-dynamic_attr: KRT_ADVMSS	{ $$ = f_new_dynamic_attr(T_INT, EA_KRT_ADVMSS); } ;
-dynamic_attr: KRT_REORDERING	{ $$ = f_new_dynamic_attr(T_INT, EA_KRT_REORDERING); } ;
-dynamic_attr: KRT_HOPLIMIT	{ $$ = f_new_dynamic_attr(T_INT, EA_KRT_HOPLIMIT); } ;
-dynamic_attr: KRT_INITCWND	{ $$ = f_new_dynamic_attr(T_INT, EA_KRT_INITCWND); } ;
-dynamic_attr: KRT_RTO_MIN	{ $$ = f_new_dynamic_attr(T_INT, EA_KRT_RTO_MIN); } ;
-dynamic_attr: KRT_INITRWND	{ $$ = f_new_dynamic_attr(T_INT, EA_KRT_INITRWND); } ;
-dynamic_attr: KRT_QUICKACK	{ $$ = f_new_dynamic_attr(T_INT, EA_KRT_QUICKACK); } ;
-
 /* Bits of EA_KRT_LOCK, based on RTAX_* constants */
 
-attr_bit: KRT_LOCK_MTU	{ $$ = f_new_dynamic_attr_bit(2, EA_KRT_LOCK); } ;
-attr_bit: KRT_LOCK_WINDOW	{ $$ = f_new_dynamic_attr_bit(3, EA_KRT_LOCK); } ;
-attr_bit: KRT_LOCK_RTT	{ $$ = f_new_dynamic_attr_bit(4, EA_KRT_LOCK); } ;
-attr_bit: KRT_LOCK_RTTVAR	{ $$ = f_new_dynamic_attr_bit(5, EA_KRT_LOCK); } ;
-attr_bit: KRT_LOCK_SSTRESH	{ $$ = f_new_dynamic_attr_bit(6, EA_KRT_LOCK); } ;
-attr_bit: KRT_LOCK_CWND	{ $$ = f_new_dynamic_attr_bit(7, EA_KRT_LOCK); } ;
-attr_bit: KRT_LOCK_ADVMSS	{ $$ = f_new_dynamic_attr_bit(8, EA_KRT_LOCK); } ;
-attr_bit: KRT_LOCK_REORDERING { $$ = f_new_dynamic_attr_bit(9, EA_KRT_LOCK); } ;
-attr_bit: KRT_LOCK_HOPLIMIT { $$ = f_new_dynamic_attr_bit(10, EA_KRT_LOCK); } ;
-attr_bit: KRT_LOCK_RTO_MIN { $$ = f_new_dynamic_attr_bit(13, EA_KRT_LOCK); } ;
-
-attr_bit: KRT_FEATURE_ECN	{ $$ = f_new_dynamic_attr_bit(0, EA_KRT_FEATURES); } ;
-attr_bit: KRT_FEATURE_ALLFRAG { $$ = f_new_dynamic_attr_bit(3, EA_KRT_FEATURES); } ;
+attr_bit: KRT_LOCK_MTU	{ $$ = f_new_dynamic_attr_bit(2, "krt_lock"); } ;
+attr_bit: KRT_LOCK_WINDOW	{ $$ = f_new_dynamic_attr_bit(3, "krt_lock"); } ;
+attr_bit: KRT_LOCK_RTT	{ $$ = f_new_dynamic_attr_bit(4, "krt_lock"); } ;
+attr_bit: KRT_LOCK_RTTVAR	{ $$ = f_new_dynamic_attr_bit(5, "krt_lock"); } ;
+attr_bit: KRT_LOCK_SSTRESH	{ $$ = f_new_dynamic_attr_bit(6, "krt_lock"); } ;
+attr_bit: KRT_LOCK_CWND	{ $$ = f_new_dynamic_attr_bit(7, "krt_lock"); } ;
+attr_bit: KRT_LOCK_ADVMSS	{ $$ = f_new_dynamic_attr_bit(8, "krt_lock"); } ;
+attr_bit: KRT_LOCK_REORDERING { $$ = f_new_dynamic_attr_bit(9, "krt_lock"); } ;
+attr_bit: KRT_LOCK_HOPLIMIT { $$ = f_new_dynamic_attr_bit(10, "krt_lock"); } ;
+attr_bit: KRT_LOCK_RTO_MIN { $$ = f_new_dynamic_attr_bit(13, "krt_lock"); } ;
+
+/* Bits of EA_KRT_FEATURES */
+attr_bit: KRT_FEATURE_ECN	{ $$ = f_new_dynamic_attr_bit(0, "krt_features"); } ;
+attr_bit: KRT_FEATURE_ALLFRAG { $$ = f_new_dynamic_attr_bit(3, "krt_features"); } ;
 
 
 CF_CODE
diff --git a/sysdep/linux/netlink.c b/sysdep/linux/netlink.c
index 81e02b4c..23d41b56 100644
--- a/sysdep/linux/netlink.c
+++ b/sysdep/linux/netlink.c
@@ -26,6 +26,7 @@
 #include "lib/socket.h"
 #include "lib/string.h"
 #include "lib/hash.h"
+#include "lib/macro.h"
 #include "conf/conf.h"
 
 #include <asm/types.h>
@@ -121,6 +122,101 @@ struct nl_parse_state
   u32 rta_flow;		/* Used during parsing */
 };
 
+/*
+ *	Netlink eattr definitions
+ */
+
+#define KRT_METRICS_MAX		ARRAY_SIZE(ea_krt_metrics)
+#define KRT_FEATURES_MAX	4
+
+static void krt_bitfield_format(const eattr *e, byte *buf, uint buflen);
+
+static struct ea_class
+  ea_krt_prefsrc = {
+    .name = "krt_prefsrc",
+    .type = T_IP,
+  },
+  ea_krt_realm = {
+    .name = "krt_realm",
+    .type = T_INT,
+  },
+  ea_krt_scope = {
+    .name = "krt_scope",
+    .type = T_INT,
+  };
+
+static struct ea_class ea_krt_metrics[] = {
+  [RTAX_LOCK] = {
+    .name = "krt_lock",
+    .type = T_INT,
+    .format = krt_bitfield_format,
+  },
+  [RTAX_FEATURES] = {
+    .name = "krt_features",
+    .type = T_INT,
+    .format = krt_bitfield_format,
+  },
+#define KRT_METRIC_INT(_rtax, _name)	[_rtax] = { .name = _name, .type = T_INT }
+  KRT_METRIC_INT(RTAX_MTU, "krt_mtu"),
+  KRT_METRIC_INT(RTAX_WINDOW, "krt_window"),
+  KRT_METRIC_INT(RTAX_RTT, "krt_rtt"),
+  KRT_METRIC_INT(RTAX_RTTVAR, "krt_rttvar"),
+  KRT_METRIC_INT(RTAX_SSTHRESH, "krt_sstresh"),
+  KRT_METRIC_INT(RTAX_CWND, "krt_cwnd"),
+  KRT_METRIC_INT(RTAX_ADVMSS, "krt_advmss"),
+  KRT_METRIC_INT(RTAX_REORDERING, "krt_reordering"),
+  KRT_METRIC_INT(RTAX_HOPLIMIT, "krt_hoplimit"),
+  KRT_METRIC_INT(RTAX_INITCWND, "krt_initcwnd"),
+  KRT_METRIC_INT(RTAX_RTO_MIN, "krt_rto_min"),
+  KRT_METRIC_INT(RTAX_INITRWND, "krt_initrwnd"),
+  KRT_METRIC_INT(RTAX_QUICKACK, "krt_quickack"),
+#undef KRT_METRIC_INT
+};
+
+static const char *krt_metrics_names[KRT_METRICS_MAX] = {
+  NULL, "lock", "mtu", "window", "rtt", "rttvar", "sstresh", "cwnd", "advmss",
+  "reordering", "hoplimit", "initcwnd", "features", "rto_min", "initrwnd", "quickack"
+};
+
+static const char *krt_features_names[KRT_FEATURES_MAX] = {
+  "ecn", NULL, NULL, "allfrag"
+};
+
+static void
+krt_bitfield_format(const eattr *a, byte *buf, uint buflen)
+{
+  if (a->id == ea_krt_metrics[RTAX_LOCK].id)
+    ea_format_bitfield(a, buf, buflen, krt_metrics_names, 2, KRT_METRICS_MAX);
+  else if (a->id == ea_krt_metrics[RTAX_FEATURES].id)
+    ea_format_bitfield(a, buf, buflen, krt_features_names, 0, KRT_FEATURES_MAX);
+}
+
+static void
+nl_ea_register(void)
+{
+  EA_REGISTER_ALL(
+      &ea_krt_prefsrc,
+      &ea_krt_realm,
+      &ea_krt_scope
+      );
+
+  for (uint i = 0; i < KRT_METRICS_MAX; i++)
+  {
+    if (!ea_krt_metrics[i].name)
+      ea_krt_metrics[i] = (struct ea_class) {
+	.name = mb_sprintf(&root_pool, "krt_metric_%d", i),
+	.type = T_INT,
+      };
+
+    ea_register_init(&ea_krt_metrics[i]);
+  }
+
+  for (uint i = 1; i < KRT_METRICS_MAX; i++)
+    ASSERT_DIE(ea_krt_metrics[i].id == ea_krt_metrics[0].id + i);
+}
+
+
+
 /*
  *	Synchronous Netlink interface
  */
@@ -734,7 +830,7 @@ static void
 nl_add_multipath(struct nlmsghdr *h, uint bufsize, struct nexthop *nh, int af, ea_list *eattrs)
 {
   struct rtattr *a = nl_open_attr(h, bufsize, RTA_MULTIPATH);
-  eattr *flow = ea_find(eattrs, EA_KRT_REALM);
+  eattr *flow = ea_find(eattrs, &ea_krt_realm);
 
   for (; nh; nh = nh->next)
   {
@@ -1399,7 +1495,7 @@ nl_send_route(struct krt_proto *p, rte *e, int op, int dest, struct nexthop *nh)
     priority = 0;
   else if (KRT_CF->sys.metric)
     priority = KRT_CF->sys.metric;
-  else if ((op != NL_OP_DELETE) && (ea = ea_find(eattrs, EA_KRT_METRIC)))
+  else if ((op != NL_OP_DELETE) && (ea = ea_find(eattrs, &ea_krt_metric)))
     priority = ea->u.data;
 
   if (priority)
@@ -1412,15 +1508,15 @@ nl_send_route(struct krt_proto *p, rte *e, int op, int dest, struct nexthop *nh)
   /* Default scope is LINK for device routes, UNIVERSE otherwise */
   if (p->af == AF_MPLS)
     r->r.rtm_scope = RT_SCOPE_UNIVERSE;
-  else if (ea = ea_find(eattrs, EA_KRT_SCOPE))
+  else if (ea = ea_find(eattrs, &ea_krt_scope))
     r->r.rtm_scope = ea->u.data;
   else
     r->r.rtm_scope = (dest == RTD_UNICAST && ipa_zero(nh->gw)) ? RT_SCOPE_LINK : RT_SCOPE_UNIVERSE;
 
-  if (ea = ea_find(eattrs, EA_KRT_PREFSRC))
+  if (ea = ea_find(eattrs, &ea_krt_prefsrc))
     nl_add_attr_ipa(&r->h, rsize, RTA_PREFSRC, *(ip_addr *)ea->u.ptr->data);
 
-  if (ea = ea_find(eattrs, EA_KRT_REALM))
+  if (ea = ea_find(eattrs, &ea_krt_realm))
     nl_add_attr_u32(&r->h, rsize, RTA_FLOW, ea->u.data);
 
 
@@ -1428,9 +1524,9 @@ nl_send_route(struct krt_proto *p, rte *e, int op, int dest, struct nexthop *nh)
   metrics[0] = 0;
 
   struct ea_walk_state ews = { .eattrs = eattrs };
-  while (ea = ea_walk(&ews, EA_KRT_METRICS, KRT_METRICS_MAX))
+  while (ea = ea_walk(&ews, ea_krt_metrics[0].id, KRT_METRICS_MAX))
   {
-    int id = ea->id - EA_KRT_METRICS;
+    int id = ea->id - ea_krt_metrics[0].id;
     metrics[0] |= 1 << id;
     metrics[id] = ea->u.data;
   }
@@ -1581,21 +1677,15 @@ nl_announce_route(struct nl_parse_state *s)
   rte *e = rte_get_temp(s->attrs, s->proto->p.main_source);
   e->net = s->net;
 
-  EA_LOCAL_LIST(2) ea0 = {
+  EA_LOCAL_LIST(2) ea = {
     .l = { .count = 2, .next = e->attrs->eattrs },
-    .a[0] = (eattr) {
-      .id = EA_KRT_SOURCE,
-      .type = T_INT,
-      .u.data = s->krt_proto,
-    },
-    .a[1] = (eattr) {
-      .id = EA_KRT_METRIC,
-      .type = T_INT,
-      .u.data = s->krt_metric,
+    .a = {
+      EA_LITERAL_EMBEDDED(&ea_krt_source, 0, s->krt_proto),
+      EA_LITERAL_EMBEDDED(&ea_krt_metric, 0, s->krt_metric),
     },
   };
 
-  e->attrs->eattrs = &ea0.l;
+  e->attrs->eattrs = &ea.l;
 
   if (s->scan)
     krt_got_route(s->proto, e, s->krt_src);
@@ -1867,20 +1957,20 @@ nl_parse_route(struct nl_parse_state *s, struct nlmsghdr *h)
 
   if (i->rtm_scope != def_scope)
     ea_set_attr(&ra->eattrs,
-	EA_LITERAL_EMBEDDED(EA_KRT_SCOPE, T_INT, 0, i->rtm_scope));
+	EA_LITERAL_EMBEDDED(&ea_krt_scope, 0, i->rtm_scope));
 
   if (a[RTA_PREFSRC])
-    {
-      ip_addr ps = rta_get_ipa(a[RTA_PREFSRC]);
+  {
+    ip_addr ps = rta_get_ipa(a[RTA_PREFSRC]);
 
-      ea_set_attr(&ra->eattrs,
-	  EA_LITERAL_STORE_ADATA(EA_KRT_PREFSRC, T_IP, 0, &ps, sizeof(ps)));
-    }
+    ea_set_attr(&ra->eattrs,
+	EA_LITERAL_STORE_ADATA(&ea_krt_prefsrc, 0, &ps, sizeof(ps)));
+  }
 
   /* Can be set per-route or per-nexthop */
   if (s->rta_flow)
     ea_set_attr(&ra->eattrs,
-	EA_LITERAL_EMBEDDED(EA_KRT_REALM, T_INT, 0, s->rta_flow));
+	EA_LITERAL_EMBEDDED(&ea_krt_realm, 0, s->rta_flow));
 
   if (a[RTA_METRICS])
     {
@@ -1891,11 +1981,10 @@ nl_parse_route(struct nl_parse_state *s, struct nlmsghdr *h)
 	  return;
 	}
 
-      for (int t = 1; t < KRT_METRICS_MAX; t++)
+      for (uint t = 1; t < KRT_METRICS_MAX; t++)
 	if (metrics[0] & (1 << t))
 	  ea_set_attr(&ra->eattrs,
-	      EA_LITERAL_EMBEDDED(EA_CODE(PROTOCOL_KERNEL, KRT_METRICS_OFFSET + t),
-		T_INT, 0, metrics[t]));
+	      EA_LITERAL_EMBEDDED(&ea_krt_metrics[t], 0, metrics[t]));
     }
 
   /*
@@ -2133,6 +2222,8 @@ krt_sys_io_init(void)
 {
   nl_linpool = lp_new_default(krt_pool);
   HASH_INIT(nl_table_map, krt_pool, 6);
+
+  nl_ea_register();
 }
 
 int
@@ -2186,56 +2277,6 @@ krt_sys_copy_config(struct krt_config *d, struct krt_config *s)
   d->sys.metric = s->sys.metric;
 }
 
-static const char *krt_metrics_names[KRT_METRICS_MAX] = {
-  NULL, "lock", "mtu", "window", "rtt", "rttvar", "sstresh", "cwnd", "advmss",
-  "reordering", "hoplimit", "initcwnd", "features", "rto_min", "initrwnd", "quickack"
-};
-
-static const char *krt_features_names[KRT_FEATURES_MAX] = {
-  "ecn", NULL, NULL, "allfrag"
-};
-
-int
-krt_sys_get_attr(const eattr *a, byte *buf, int buflen UNUSED)
-{
-  switch (a->id)
-  {
-  case EA_KRT_PREFSRC:
-    bsprintf(buf, "prefsrc");
-    return GA_NAME;
-
-  case EA_KRT_REALM:
-    bsprintf(buf, "realm");
-    return GA_NAME;
-
-  case EA_KRT_SCOPE:
-    bsprintf(buf, "scope");
-    return GA_NAME;
-
-  case EA_KRT_LOCK:
-    buf += bsprintf(buf, "lock:");
-    ea_format_bitfield(a, buf, buflen, krt_metrics_names, 2, KRT_METRICS_MAX);
-    return GA_FULL;
-
-  case EA_KRT_FEATURES:
-    buf += bsprintf(buf, "features:");
-    ea_format_bitfield(a, buf, buflen, krt_features_names, 0, KRT_FEATURES_MAX);
-    return GA_FULL;
-
-  default:;
-    int id = (int)EA_ID(a->id) - KRT_METRICS_OFFSET;
-    if (id > 0 && id < KRT_METRICS_MAX)
-    {
-      bsprintf(buf, "%s", krt_metrics_names[id]);
-      return GA_NAME;
-    }
-
-    return GA_UNKNOWN;
-  }
-}
-
-
-
 void
 kif_sys_start(struct kif_proto *p UNUSED)
 {
diff --git a/sysdep/unix/krt.Y b/sysdep/unix/krt.Y
index 2a3f41de..9300e9c8 100644
--- a/sysdep/unix/krt.Y
+++ b/sysdep/unix/krt.Y
@@ -122,9 +122,6 @@ kif_iface:
   kif_iface_start iface_patt_list_nopx kif_iface_opt_list;
 
 
-dynamic_attr: KRT_SOURCE { $$ = f_new_dynamic_attr(T_INT, EA_KRT_SOURCE); } ;
-dynamic_attr: KRT_METRIC { $$ = f_new_dynamic_attr(T_INT, EA_KRT_METRIC); } ;
-
 CF_CODE
 
 CF_END
diff --git a/sysdep/unix/krt.c b/sysdep/unix/krt.c
index 0ebc4fb3..4da51ce2 100644
--- a/sysdep/unix/krt.c
+++ b/sysdep/unix/krt.c
@@ -232,7 +232,6 @@ kif_copy_config(struct proto_config *dest, struct proto_config *src)
 struct protocol proto_unix_iface = {
   .name = 		"Device",
   .template = 		"device%d",
-  .class =		PROTOCOL_DEVICE,
   .proto_size =		sizeof(struct kif_proto),
   .config_size =	sizeof(struct kif_config),
   .preconfig =		kif_preconfig,
@@ -287,7 +286,7 @@ static struct tbf rl_alien = TBF_DEFAULT_LOG_LIMITS;
 static inline u32
 krt_metric(rte *a)
 {
-  eattr *ea = ea_find(a->attrs->eattrs, EA_KRT_METRIC);
+  eattr *ea = ea_find(a->attrs->eattrs, &ea_krt_metric);
   return ea ? ea->u.data : 0;
 }
 
@@ -1133,24 +1132,15 @@ krt_copy_config(struct proto_config *dest, struct proto_config *src)
   krt_sys_copy_config(d, s);
 }
 
-static int
-krt_get_attr(const eattr *a, byte *buf, int buflen)
-{
-  switch (a->id)
-  {
-  case EA_KRT_SOURCE:
-    bsprintf(buf, "source");
-    return GA_NAME;
-
-  case EA_KRT_METRIC:
-    bsprintf(buf, "metric");
-    return GA_NAME;
-
-  default:
-    return krt_sys_get_attr(a, buf, buflen);
-  }
-}
+struct ea_class ea_krt_source = {
+  .name = "krt_source",
+  .type = T_INT,
+};
 
+struct ea_class ea_krt_metric = {
+  .name = "krt_metric",
+  .type = T_INT,
+};
 
 #ifdef CONFIG_IP6_SADR_KERNEL
 #define MAYBE_IP6_SADR	NB_IP6_SADR
@@ -1167,7 +1157,6 @@ krt_get_attr(const eattr *a, byte *buf, int buflen)
 struct protocol proto_unix_kernel = {
   .name =		"Kernel",
   .template =		"kernel%d",
-  .class =		PROTOCOL_KERNEL,
   .preference =		DEF_PREF_INHERITED,
   .channel_mask =	NB_IP | MAYBE_IP6_SADR | MAYBE_MPLS,
   .proto_size =		sizeof(struct krt_proto),
@@ -1179,7 +1168,6 @@ struct protocol proto_unix_kernel = {
   .shutdown =		krt_shutdown,
   .reconfigure =	krt_reconfigure,
   .copy_config =	krt_copy_config,
-  .get_attr =		krt_get_attr,
 #ifdef KRT_ALLOW_LEARN
   .dump =		krt_dump,
 #endif
@@ -1189,4 +1177,9 @@ void
 krt_build(void)
 {
   proto_build(&proto_unix_kernel);
+
+  EA_REGISTER_ALL(
+      &ea_krt_source,
+      &ea_krt_metric,
+      );
 }
diff --git a/sysdep/unix/krt.h b/sysdep/unix/krt.h
index 20858cd7..04b04162 100644
--- a/sysdep/unix/krt.h
+++ b/sysdep/unix/krt.h
@@ -21,8 +21,12 @@ struct kif_proto;
 
 #define KRT_DEFAULT_ECMP_LIMIT	16
 
+#if 0
 #define EA_KRT_SOURCE	EA_CODE(PROTOCOL_KERNEL, 0)
 #define EA_KRT_METRIC	EA_CODE(PROTOCOL_KERNEL, 1)
+#endif
+
+extern struct ea_class ea_krt_source, ea_krt_metric;
 
 #define KRT_REF_SEEN	0x1	/* Seen in table */
 #define KRT_REF_BEST	0x2	/* Best in table */
diff --git a/sysdep/unix/main.c b/sysdep/unix/main.c
index 9bb37e5d..8fdad4e6 100644
--- a/sysdep/unix/main.c
+++ b/sysdep/unix/main.c
@@ -881,8 +881,8 @@ main(int argc, char **argv)
   resource_init();
   timer_init();
   olock_init();
-  io_init();
   rt_init();
+  io_init();
   if_init();
 //  roa_init();
   config_init();
diff --git a/test/bt-utils.c b/test/bt-utils.c
index ce9a49d7..509b5ed4 100644
--- a/test/bt-utils.c
+++ b/test/bt-utils.c
@@ -62,8 +62,8 @@ bt_bird_init(void)
 
   olock_init();
   timer_init();
-  io_init();
   rt_init();
+  io_init();
   if_init();
   config_init();
 
@@ -72,9 +72,6 @@ bt_bird_init(void)
 
 void bt_bird_cleanup(void)
 {
-  for (int i = 0; i < PROTOCOL__MAX; i++)
-    class_to_protocol[i] = NULL;
-
   config = new_config = NULL;
 }
 
-- 
cgit v1.2.3