From ddd89ba12d03d648e9bb820c6a4f48b1f96f15d2 Mon Sep 17 00:00:00 2001
From: Maria Matejka <mq@ucw.cz>
Date: Mon, 10 Feb 2020 15:01:36 +0100
Subject: BGP: Moved the suppressed and stale flags to pflags

---
 nest/route.h        |  6 ------
 proto/bgp/attrs.c   | 51 +++++++++++++++++++++++++++++----------------------
 proto/bgp/bgp.h     |  4 ++++
 proto/bgp/packets.c |  2 --
 proto/pipe/pipe.c   |  6 +++++-
 5 files changed, 38 insertions(+), 31 deletions(-)

diff --git a/nest/route.h b/nest/route.h
index d2c4adef..27ae75ce 100644
--- a/nest/route.h
+++ b/nest/route.h
@@ -244,12 +244,6 @@ typedef struct rte {
   byte pflags;				/* Protocol-specific flags */
   btime lastmod;			/* Last modified */
   union {				/* Protocol-dependent data (metrics etc.) */
-#ifdef CONFIG_BGP
-    struct {
-      u8 suppressed;			/* Used for deterministic MED comparison */
-      s8 stale;				/* Route is LLGR_STALE, -1 if unknown */
-    } bgp;
-#endif
   } u;
 } rte;
 
diff --git a/proto/bgp/attrs.c b/proto/bgp/attrs.c
index 18d2985c..0ed2623e 100644
--- a/proto/bgp/attrs.c
+++ b/proto/bgp/attrs.c
@@ -1887,14 +1887,24 @@ bgp_get_neighbor(rte *r)
 static inline int
 rte_stale(rte *r)
 {
-  if (r->u.bgp.stale < 0)
+  if (r->pflags & BGP_REF_STALE)
+    return 1;
+
+  if (r->pflags & BGP_REF_NOT_STALE)
+    return 0;
+
+  /* If staleness is unknown, compute and cache it */
+  eattr *a = ea_find(r->attrs->eattrs, EA_CODE(PROTOCOL_BGP, BA_COMMUNITY));
+  if (a && int_set_contains(a->u.ptr, BGP_COMM_LLGR_STALE))
   {
-    /* If staleness is unknown, compute and cache it */
-    eattr *a = ea_find(r->attrs->eattrs, EA_CODE(PROTOCOL_BGP, BA_COMMUNITY));
-    r->u.bgp.stale = a && int_set_contains(a->u.ptr, BGP_COMM_LLGR_STALE);
+    r->pflags |= BGP_REF_STALE;
+    return 1;
+  }
+  else
+  {
+    r->pflags |= BGP_REF_NOT_STALE;
+    return 0;
   }
-
-  return r->u.bgp.stale;
 }
 
 int
@@ -1906,8 +1916,8 @@ bgp_rte_better(rte *new, rte *old)
   u32 n, o;
 
   /* Skip suppressed routes (see bgp_rte_recalculate()) */
-  n = new->u.bgp.suppressed;
-  o = old->u.bgp.suppressed;
+  n = new->pflags & BGP_REF_SUPPRESSED;
+  o = old->pflags & BGP_REF_SUPPRESSED;
   if (n > o)
     return 0;
   if (n < o)
@@ -2051,17 +2061,14 @@ bgp_rte_mergable(rte *pri, rte *sec)
   u32 p, s;
 
   /* Skip suppressed routes (see bgp_rte_recalculate()) */
-  if (pri->u.bgp.suppressed != sec->u.bgp.suppressed)
+  /* LLGR draft - depreference stale routes */
+  if (pri->pflags != sec->pflags)
     return 0;
 
   /* RFC 4271 9.1.2.1. Route resolvability test */
   if (rte_resolvable(pri) != rte_resolvable(sec))
     return 0;
 
-  /* LLGR draft - depreference stale routes */
-  if (rte_stale(pri) != rte_stale(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));
@@ -2141,7 +2148,7 @@ bgp_rte_recalculate(rtable *table, net *net, rte *new, rte *old, rte *old_best)
   rte *key = new ? new : old;
   u32 lpref = key->attrs->pref;
   u32 lasn = bgp_get_neighbor(key);
-  int old_suppressed = old ? old->u.bgp.suppressed : 0;
+  int old_suppressed = old ? !!(old->pflags & BGP_REF_SUPPRESSED) : 0;
 
   /*
    * Proper RFC 4271 path selection is a bit complicated, it cannot be
@@ -2193,11 +2200,11 @@ bgp_rte_recalculate(rtable *table, net *net, rte *new, rte *old, rte *old_best)
    */
 
   if (new)
-    new->u.bgp.suppressed = 1;
+    new->pflags |= BGP_REF_SUPPRESSED;
 
   if (old)
   {
-    old->u.bgp.suppressed = 1;
+    old->pflags |= BGP_REF_SUPPRESSED;
 
     /* The fast case - replace not best with worse (or remove not best) */
     if (old_suppressed && !(new && bgp_rte_better(new, old)))
@@ -2209,7 +2216,7 @@ bgp_rte_recalculate(rtable *table, net *net, rte *new, rte *old, rte *old_best)
   for (s=net->routes; rte_is_valid(s); s=s->next)
     if (use_deterministic_med(s) && same_group(s, lpref, lasn))
     {
-      s->u.bgp.suppressed = 1;
+      s->pflags |= BGP_REF_SUPPRESSED;
       if (!r || bgp_rte_better(s, r))
 	r = s;
     }
@@ -2220,16 +2227,16 @@ bgp_rte_recalculate(rtable *table, net *net, rte *new, rte *old, rte *old_best)
 
   /* Found if new is mergable with best-in-group */
   if (new && (new != r) && bgp_rte_mergable(r, new))
-    new->u.bgp.suppressed = 0;
+    new->pflags &= ~BGP_REF_SUPPRESSED;
 
   /* Found all existing routes mergable with best-in-group */
   for (s=net->routes; rte_is_valid(s); s=s->next)
     if (use_deterministic_med(s) && same_group(s, lpref, lasn))
       if ((s != r) && bgp_rte_mergable(r, s))
-	s->u.bgp.suppressed = 0;
+	s->pflags &= ~BGP_REF_SUPPRESSED;
 
   /* Found best-in-group */
-  r->u.bgp.suppressed = 0;
+  r->pflags &= ~BGP_REF_SUPPRESSED;
 
   /*
    * There are generally two reasons why we have to force
@@ -2277,7 +2284,7 @@ bgp_rte_modify_stale(struct rte *r, struct linpool *pool)
   r = rte_cow_rta(r, pool);
   bgp_set_attr_ptr(&(r->attrs->eattrs), pool, BA_COMMUNITY, flags,
 		   int_set_add(pool, ad, BGP_COMM_LLGR_STALE));
-  r->u.bgp.stale = 1;
+  r->pflags |= BGP_REF_STALE;
 
   return r;
 }
@@ -2364,7 +2371,7 @@ bgp_get_route_info(rte *e, byte *buf)
 
   buf += bsprintf(buf, " (%d", e->attrs->pref);
 
-  if (e->u.bgp.suppressed)
+  if (e->pflags & BGP_REF_SUPPRESSED)
     buf += bsprintf(buf, "-");
 
   if (rte_stale(e))
diff --git a/proto/bgp/bgp.h b/proto/bgp/bgp.h
index c440c7af..b770956b 100644
--- a/proto/bgp/bgp.h
+++ b/proto/bgp/bgp.h
@@ -200,6 +200,10 @@ struct bgp_channel_config {
 
 #define BGP_BFD_GRACEFUL	2	/* BFD down triggers graceful restart */
 
+/* rte->pflags */
+#define BGP_REF_SUPPRESSED	0x1	/* Used for deterministic MED comparison */
+#define BGP_REF_STALE		0x2	/* Route is LLGR_STATE */
+#define BGP_REF_NOT_STALE	0x4	/* Route is NOT LLGR_STATE */
 
 struct bgp_af_caps {
   u32 afi;
diff --git a/proto/bgp/packets.c b/proto/bgp/packets.c
index b8d80513..6bc71623 100644
--- a/proto/bgp/packets.c
+++ b/proto/bgp/packets.c
@@ -1366,8 +1366,6 @@ bgp_rte_update(struct bgp_parse_state *s, net_addr *n, u32 path_id, rta *a0)
   rte *e = rte_get_temp(a, s->last_src);
 
   e->pflags = 0;
-  e->u.bgp.suppressed = 0;
-  e->u.bgp.stale = -1;
   rte_update3(&s->channel->c, n, e, s->last_src);
 }
 
diff --git a/proto/pipe/pipe.c b/proto/pipe/pipe.c
index de86b62b..d85a281a 100644
--- a/proto/pipe/pipe.c
+++ b/proto/pipe/pipe.c
@@ -43,6 +43,10 @@
 
 #include "pipe.h"
 
+#ifdef CONFIG_BGP
+#include "proto/bgp/bgp.h"
+#endif
+
 static void
 pipe_rt_notify(struct proto *P, struct channel *src_ch, net *n, rte *new, rte *old)
 {
@@ -82,7 +86,7 @@ pipe_rt_notify(struct proto *P, struct channel *src_ch, net *n, rte *new, rte *o
 #ifdef CONFIG_BGP
       /* Hack to cleanup cached value */
       if (e->src->proto->proto == &proto_bgp)
-	e->u.bgp.stale = -1;
+	e->pflags &= ~(BGP_REF_STALE | BGP_REF_NOT_STALE);
 #endif
     }
   else
-- 
cgit v1.2.3


From 541881bedf391d9a19f071b856dcbd55e850dece Mon Sep 17 00:00:00 2001
From: Maria Matejka <mq@ucw.cz>
Date: Thu, 16 Sep 2021 11:00:19 +0200
Subject: RIP fixup + dropping the tmp_attrs mechanism as obsolete

---
 nest/proto-hooks.c |  30 ---------
 nest/protocol.h    |   4 --
 nest/route.h       |   8 ---
 nest/rt-show.c     |   1 -
 nest/rt-table.c    | 184 -----------------------------------------------------
 proto/mrt/mrt.c    |   2 -
 proto/pipe/pipe.c  |   4 --
 proto/rip/rip.c    |   2 -
 sysdep/unix/krt.c  |   2 -
 9 files changed, 237 deletions(-)

diff --git a/nest/proto-hooks.c b/nest/proto-hooks.c
index bc88b4b4..0cd4ac37 100644
--- a/nest/proto-hooks.c
+++ b/nest/proto-hooks.c
@@ -227,36 +227,6 @@ void rt_notify(struct proto *p, net *net, rte *new, rte *old, ea_list *attrs)
 void neigh_notify(neighbor *neigh)
 { DUMMY; }
 
-/**
- * make_tmp_attrs - convert embedded attributes to temporary ones
- * @e: route entry
- * @pool: linear pool to allocate attribute memory in
- *
- * This hook is called by the routing table functions if they need
- * to convert the protocol attributes embedded directly in the &rte
- * to temporary extended attributes in order to distribute them
- * to other protocols or to filters. make_tmp_attrs() creates
- * an &ea_list in the linear pool @pool, fills it with values of the
- * temporary attributes and returns a pointer to it.
- */
-ea_list *make_tmp_attrs(rte *e, struct linpool *pool)
-{ DUMMY; }
-
-/**
- * store_tmp_attrs - convert temporary attributes to embedded ones
- * @e: route entry
- * @attrs: temporary attributes to be converted
- *
- * This hook is an exact opposite of make_tmp_attrs() -- it takes
- * a list of extended attributes and converts them to attributes
- * embedded in the &rte corresponding to this protocol.
- *
- * You must be prepared for any of the attributes being missing
- * from the list and use default values instead.
- */
-void store_tmp_attrs(rte *e, ea_list *attrs)
-{ DUMMY; }
-
 /**
  * preexport - pre-filtering decisions before route export
  * @p: protocol instance the route is going to be exported to
diff --git a/nest/protocol.h b/nest/protocol.h
index 62fd2b66..1679d590 100644
--- a/nest/protocol.h
+++ b/nest/protocol.h
@@ -198,8 +198,6 @@ struct proto {
    *	   ifa_notify	Notify protocol about interface address changes.
    *	   rt_notify	Notify protocol about routing table updates.
    *	   neigh_notify	Notify protocol about neighbor cache events.
-   *	   make_tmp_attrs  Add attributes to rta from from private attrs stored in rte. The route and rta MUST NOT be cached.
-   *	   store_tmp_attrs Store private attrs back to rte and undef added attributes. The route and rta MUST NOT be cached.
    *	   preexport	Called as the first step of the route exporting process.
    *			It can decide whether the route shall be exported:
    *			  -1 = reject,
@@ -216,8 +214,6 @@ struct proto {
   void (*ifa_notify)(struct proto *, unsigned flags, struct ifa *a);
   void (*rt_notify)(struct proto *, struct channel *, struct network *net, struct rte *new, struct rte *old);
   void (*neigh_notify)(struct neighbor *neigh);
-  void (*make_tmp_attrs)(struct rte *rt, struct linpool *pool);
-  void (*store_tmp_attrs)(struct rte *rt, struct linpool *pool);
   int (*preexport)(struct proto *, struct rte *rt);
   void (*reload_routes)(struct channel *);
   void (*feed_begin)(struct channel *, int initial);
diff --git a/nest/route.h b/nest/route.h
index 27ae75ce..bb23152b 100644
--- a/nest/route.h
+++ b/nest/route.h
@@ -243,8 +243,6 @@ typedef struct rte {
   byte flags;				/* Flags (REF_...) */
   byte pflags;				/* Protocol-specific flags */
   btime lastmod;			/* Last modified */
-  union {				/* Protocol-dependent data (metrics etc.) */
-  } u;
 } rte;
 
 #define REF_COW		1		/* Copy this rte on write */
@@ -307,10 +305,6 @@ 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 rte_init_tmp_attrs(struct rte *r, linpool *lp, uint max);
-void rte_make_tmp_attr(struct rte *r, uint id, uint type, uintptr_t val);
-void rte_make_tmp_attrs(struct rte **r, struct linpool *pool, struct rta **old_attrs);
-uintptr_t rte_store_tmp_attr(struct rte *r, uint id);
 void rt_dump(rtable *);
 void rt_dump_all(void);
 int rt_feed_channel(struct channel *c);
@@ -475,7 +469,6 @@ typedef struct eattr {
 #define EA_CODE(proto,id) (((proto) << 8) | (id))
 #define EA_ID(ea) ((ea) & 0xff)
 #define EA_PROTO(ea) ((ea) >> 8)
-#define EA_ID_FLAG(ea) (1 << EA_ID(ea))
 #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)
@@ -537,7 +530,6 @@ typedef struct 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 */
-#define EALF_TEMP 8			/* Temporary ea_list added by make_tmp_attrs hooks */
 
 struct rte_src *rt_find_source(struct proto *p, u32 id);
 struct rte_src *rt_get_source(struct proto *p, u32 id);
diff --git a/nest/rt-show.c b/nest/rt-show.c
index 05065134..99f29691 100644
--- a/nest/rt-show.c
+++ b/nest/rt-show.c
@@ -127,7 +127,6 @@ rt_show_net(struct cli *c, net *n, struct rt_show_data *d)
 	continue;
 
       ee = e;
-      rte_make_tmp_attrs(&e, c->show_pool, NULL);
 
       /* Export channel is down, do not try to export routes to it */
       if (ec && (ec->export_state == ES_DOWN))
diff --git a/nest/rt-table.c b/nest/rt-table.c
index 13af3eaf..ff0ef463 100644
--- a/nest/rt-table.c
+++ b/nest/rt-table.c
@@ -354,175 +354,6 @@ rte_free_quick(rte *e)
   sl_free(rte_slab, e);
 }
 
-/**
- * rte_init_tmp_attrs - initialize temporary ea_list for route
- * @r: route entry to be modified
- * @lp: linpool from which to allocate attributes
- * @max: maximum number of added temporary attribus
- *
- * This function is supposed to be called from make_tmp_attrs() and
- * store_tmp_attrs() hooks before rte_make_tmp_attr() / rte_store_tmp_attr()
- * functions. It allocates &ea_list with length for @max items for temporary
- * attributes and puts it on top of eattrs stack.
- */
-void
-rte_init_tmp_attrs(rte *r, linpool *lp, uint max)
-{
-  struct ea_list *e = lp_alloc(lp, sizeof(struct ea_list) + max * sizeof(eattr));
-
-  e->next = r->attrs->eattrs;
-  e->flags = EALF_SORTED | EALF_TEMP;
-  e->count = 0;
-
-  r->attrs->eattrs = e;
-}
-
-/**
- * rte_make_tmp_attr - make temporary eattr from private route fields
- * @r: route entry to be modified
- * @id: attribute ID
- * @type: attribute type
- * @val: attribute value (u32 or adata ptr)
- *
- * This function is supposed to be called from make_tmp_attrs() hook for
- * each temporary attribute, after temporary &ea_list was initialized by
- * rte_init_tmp_attrs(). It checks whether temporary attribute is supposed to
- * be defined (based on route pflags) and if so then it fills &eattr field in
- * preallocated temporary &ea_list on top of route @r eattrs stack.
- *
- * Note that it may require free &eattr in temporary &ea_list, so it must not be
- * called more times than @max argument of rte_init_tmp_attrs().
- */
-void
-rte_make_tmp_attr(rte *r, uint id, uint type, uintptr_t val)
-{
-  if (r->pflags & EA_ID_FLAG(id))
-  {
-    ea_list *e = r->attrs->eattrs;
-    eattr *a = &e->attrs[e->count++];
-    a->id = id;
-    a->type = type;
-    a->flags = 0;
-
-    if (type & EAF_EMBEDDED)
-      a->u.data = (u32) val;
-    else
-      a->u.ptr = (struct adata *) val;
-  }
-}
-
-/**
- * rte_store_tmp_attr - store temporary eattr to private route fields
- * @r: route entry to be modified
- * @id: attribute ID
- *
- * This function is supposed to be called from store_tmp_attrs() hook for
- * each temporary attribute, after temporary &ea_list was initialized by
- * rte_init_tmp_attrs(). It checks whether temporary attribute is defined in
- * route @r eattrs stack, updates route pflags accordingly, undefines it by
- * filling &eattr field in preallocated temporary &ea_list on top of the eattrs
- * stack, and returns the value. Caller is supposed to store it in the
- * appropriate private field.
- *
- * Note that it may require free &eattr in temporary &ea_list, so it must not be
- * called more times than @max argument of rte_init_tmp_attrs()
- */
-uintptr_t
-rte_store_tmp_attr(rte *r, uint id)
-{
-  ea_list *e = r->attrs->eattrs;
-  eattr *a = ea_find(e->next, id);
-
-  if (a)
-  {
-    e->attrs[e->count++] = (struct eattr) { .id = id, .type = EAF_TYPE_UNDEF };
-    r->pflags |= EA_ID_FLAG(id);
-    return (a->type & EAF_EMBEDDED) ? a->u.data : (uintptr_t) a->u.ptr;
-  }
-  else
-  {
-    r->pflags &= ~EA_ID_FLAG(id);
-    return 0;
-  }
-}
-
-/**
- * rte_make_tmp_attrs - prepare route by adding all relevant temporary route attributes
- * @r: route entry to be modified (may be replaced if COW)
- * @lp: linpool from which to allocate attributes
- * @old_attrs: temporary ref to old &rta (may be NULL)
- *
- * This function expands privately stored protocol-dependent route attributes
- * to a uniform &eattr / &ea_list representation. It is essentially a wrapper
- * around protocol make_tmp_attrs() hook, which does some additional work like
- * ensuring that route @r is writable.
- *
- * The route @r may be read-only (with %REF_COW flag), in that case rw copy is
- * obtained by rte_cow() and @r is replaced. If @rte is originally rw, it may be
- * directly modified (and it is never copied).
- *
- * If the @old_attrs ptr is supplied, the function obtains another reference of
- * old cached &rta, that is necessary in some cases (see rte_cow_rta() for
- * details). It is freed by rte_store_tmp_attrs(), or manually by rta_free().
- *
- * Generally, if caller ensures that @r is read-only (e.g. in route export) then
- * it may ignore @old_attrs (and set it to NULL), but must handle replacement of
- * @r. If caller ensures that @r is writable (e.g. in route import) then it may
- * ignore replacement of @r, but it must handle @old_attrs.
- */
-void
-rte_make_tmp_attrs(rte **r, linpool *lp, rta **old_attrs)
-{
-  void (*make_tmp_attrs)(rte *r, linpool *lp);
-  make_tmp_attrs = (*r)->src->proto->make_tmp_attrs;
-
-  if (!make_tmp_attrs)
-    return;
-
-  /* We may need to keep ref to old attributes, will be freed in rte_store_tmp_attrs() */
-  if (old_attrs)
-    *old_attrs = rta_is_cached((*r)->attrs) ? rta_clone((*r)->attrs) : NULL;
-
-  *r = rte_cow_rta(*r, lp);
-  make_tmp_attrs(*r, lp);
-}
-
-/**
- * rte_store_tmp_attrs - store temporary route attributes back to private route fields
- * @r: route entry to be modified
- * @lp: linpool from which to allocate attributes
- * @old_attrs: temporary ref to old &rta
- *
- * This function stores temporary route attributes that were expanded by
- * rte_make_tmp_attrs() back to private route fields and also undefines them.
- * It is essentially a wrapper around protocol store_tmp_attrs() hook, which
- * does some additional work like shortcut if there is no change and cleanup
- * of @old_attrs reference obtained by rte_make_tmp_attrs().
- */
-static void
-rte_store_tmp_attrs(rte *r, linpool *lp, rta *old_attrs)
-{
-  void (*store_tmp_attrs)(rte *rt, linpool *lp);
-  store_tmp_attrs = r->src->proto->store_tmp_attrs;
-
-  if (!store_tmp_attrs)
-    return;
-
-  ASSERT(!rta_is_cached(r->attrs));
-
-  /* If there is no new ea_list, we just skip the temporary ea_list */
-  ea_list *ea = r->attrs->eattrs;
-  if (ea && (ea->flags & EALF_TEMP))
-    r->attrs->eattrs = ea->next;
-  else
-    store_tmp_attrs(r, lp);
-
-  /* Free ref we got in rte_make_tmp_attrs(), have to do rta_lookup() first */
-  r->attrs = rta_lookup(r->attrs);
-  rta_free(old_attrs);
-}
-
-
 static int				/* Actually better or at least as good as */
 rte_better(rte *new, rte *old)
 {
@@ -623,8 +454,6 @@ export_filter_(struct channel *c, rte *rt0, rte **rt_free, linpool *pool, int si
       goto accept;
     }
 
-  rte_make_tmp_attrs(&rt, pool, NULL);
-
   v = filter && ((filter == FILTER_REJECT) ||
 		 (f_run(filter, &rt, pool,
 			(silent ? FF_SILENT : 0)) > F_ACCEPT));
@@ -1469,9 +1298,6 @@ rte_update2(struct channel *c, const net_addr *n, rte *new, struct rte_src *src)
 	}
       else if (filter)
 	{
-	  rta *old_attrs = NULL;
-	  rte_make_tmp_attrs(&new, rte_update_pool, &old_attrs);
-
 	  int fr = f_run(filter, &new, rte_update_pool, 0);
 	  if (fr > F_ACCEPT)
 	  {
@@ -1479,15 +1305,10 @@ rte_update2(struct channel *c, const net_addr *n, rte *new, struct rte_src *src)
 	    rte_trace_in(D_FILTERS, c, new, "filtered out");
 
 	    if (! c->in_keep_filtered)
-	    {
-	      rta_free(old_attrs);
 	      goto drop;
-	    }
 
 	    new->flags |= REF_FILTERED;
 	  }
-
-	  rte_store_tmp_attrs(new, rte_update_pool, old_attrs);
 	}
       if (!rta_is_cached(new->attrs)) /* Need to copy attributes */
 	new->attrs = rta_lookup(new->attrs);
@@ -1581,10 +1402,7 @@ rt_examine(rtable *t, net_addr *a, struct proto *p, const struct filter *filter)
   /* Rest is stripped down export_filter() */
   int v = p->preexport ? p->preexport(p, rt) : 0;
   if (v == RIC_PROCESS)
-  {
-    rte_make_tmp_attrs(&rt, rte_update_pool, NULL);
     v = (f_run(filter, &rt, rte_update_pool, FF_SILENT) <= F_ACCEPT);
-  }
 
   /* Discard temporary rte */
   if (rt != n->routes)
@@ -2754,8 +2572,6 @@ rte_update_out(struct channel *c, const net_addr *n, rte *new, rte *old0, rte **
     net = net_get(tab, n);
     src = new->src;
 
-    rte_store_tmp_attrs(new, rte_update_pool, NULL);
-
     if (!rta_is_cached(new->attrs))
       new->attrs = rta_lookup(new->attrs);
   }
diff --git a/proto/mrt/mrt.c b/proto/mrt/mrt.c
index ed9ab325..e885611a 100644
--- a/proto/mrt/mrt.c
+++ b/proto/mrt/mrt.c
@@ -525,8 +525,6 @@ mrt_rib_table_dump(struct mrt_table_dump_state *s, net *n, int add_path)
       continue;
     }
 
-    rte_make_tmp_attrs(&rt, s->linpool, NULL);
-
     if (f_run(s->filter, &rt, s->linpool, 0) <= F_ACCEPT)
       mrt_rib_table_entry(s, rt);
 
diff --git a/proto/pipe/pipe.c b/proto/pipe/pipe.c
index d85a281a..97862780 100644
--- a/proto/pipe/pipe.c
+++ b/proto/pipe/pipe.c
@@ -77,10 +77,6 @@ pipe_rt_notify(struct proto *P, struct channel *src_ch, net *n, rte *new, rte *o
       a->cached = 0;
       a->hostentry = NULL;
       e = rte_get_temp(a, src);
-      e->pflags = 0;
-
-      /* Copy protocol specific embedded attributes. */
-      memcpy(&(e->u), &(new->u), sizeof(e->u));
       e->pflags = new->pflags;
 
 #ifdef CONFIG_BGP
diff --git a/proto/rip/rip.c b/proto/rip/rip.c
index 0556939a..a501a784 100644
--- a/proto/rip/rip.c
+++ b/proto/rip/rip.c
@@ -210,8 +210,6 @@ rip_announce_rte(struct rip_proto *p, struct rip_entry *en)
     rta *a = rta_lookup(&a0);
     rte *e = rte_get_temp(a, p->p.main_source);
 
-    e->pflags = EA_ID_FLAG(EA_RIP_METRIC) | EA_ID_FLAG(EA_RIP_TAG);
-
     rte_update(&p->p, en->n.addr, e);
   }
   else
diff --git a/sysdep/unix/krt.c b/sysdep/unix/krt.c
index 495ab986..7d7ec7e6 100644
--- a/sysdep/unix/krt.c
+++ b/sysdep/unix/krt.c
@@ -577,8 +577,6 @@ krt_export_net(struct krt_proto *p, net *net, rte **rt_free)
   if (filter == FILTER_REJECT)
     return NULL;
 
-  rte_make_tmp_attrs(&rt, krt_filter_lp, NULL);
-
   /* We could run krt_preexport() here, but it is already handled by krt_is_installed() */
 
   if (filter == FILTER_ACCEPT)
-- 
cgit v1.2.3


From 89ff49f8f0bcd2015f157134728d28ec428e1262 Mon Sep 17 00:00:00 2001
From: Maria Matejka <mq@ucw.cz>
Date: Mon, 17 Feb 2020 12:42:14 +0100
Subject: Dropping rte-local dumper entries

---
 nest/proto-hooks.c | 10 ----------
 nest/protocol.h    |  2 --
 nest/rt-table.c    |  2 --
 3 files changed, 14 deletions(-)

diff --git a/nest/proto-hooks.c b/nest/proto-hooks.c
index 0cd4ac37..716ce86c 100644
--- a/nest/proto-hooks.c
+++ b/nest/proto-hooks.c
@@ -75,16 +75,6 @@ int reconfigure(struct proto *p, struct proto_config *c)
 void dump(struct proto *p)
 { DUMMY; }
 
-/**
- * dump_attrs - dump protocol-dependent attributes
- * @e: a route entry
- *
- * This hook dumps all attributes in the &rte which belong to this
- * protocol to the debug output.
- */
-void dump_attrs(rte *e)
-{ DUMMY; }
-
 /**
  * start - request instance startup
  * @p: protocol instance
diff --git a/nest/protocol.h b/nest/protocol.h
index 1679d590..05d4d88b 100644
--- a/nest/protocol.h
+++ b/nest/protocol.h
@@ -74,7 +74,6 @@ struct protocol {
   struct proto * (*init)(struct proto_config *);		/* Create new instance */
   int (*reconfigure)(struct proto *, struct proto_config *);	/* Try to reconfigure instance, returns success */
   void (*dump)(struct proto *);			/* Debugging dump */
-  void (*dump_attrs)(struct rte *);		/* Dump protocol-dependent attributes */
   int (*start)(struct proto *);			/* Start the instance */
   int (*shutdown)(struct proto *);		/* Stop the instance */
   void (*cleanup)(struct proto *);		/* Called after shutdown when protocol became hungry/down */
@@ -467,7 +466,6 @@ struct channel_class {
 
 
   void (*dump)(struct proto *);			/* Debugging dump */
-  void (*dump_attrs)(struct rte *);		/* Dump protocol-dependent attributes */
 
   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) */
diff --git a/nest/rt-table.c b/nest/rt-table.c
index ff0ef463..9140e938 100644
--- a/nest/rt-table.c
+++ b/nest/rt-table.c
@@ -1504,8 +1504,6 @@ rte_dump(rte *e)
   debug("%-1N ", n->n.addr);
   debug("PF=%02x ", e->pflags);
   rta_dump(e->attrs);
-  if (e->src->proto->proto->dump_attrs)
-    e->src->proto->proto->dump_attrs(e);
   debug("\n");
 }
 
-- 
cgit v1.2.3


From 0b295d695acab007dd7baab3e9e97c682f716ee8 Mon Sep 17 00:00:00 2001
From: Maria Matejka <mq@ucw.cz>
Date: Tue, 14 Sep 2021 11:20:16 +0200
Subject: Dropping the unused rte_same hook

---
 nest/protocol.h | 1 -
 nest/rt-table.c | 1 -
 2 files changed, 2 deletions(-)

diff --git a/nest/protocol.h b/nest/protocol.h
index 05d4d88b..e05dd7ec 100644
--- a/nest/protocol.h
+++ b/nest/protocol.h
@@ -231,7 +231,6 @@ struct proto {
 
   int (*rte_recalculate)(struct rtable *, struct network *, struct rte *, struct rte *, struct rte *);
   int (*rte_better)(struct rte *, struct rte *);
-  int (*rte_same)(struct rte *, struct rte *);
   int (*rte_mergable)(struct rte *, struct rte *);
   struct rte * (*rte_modify)(struct rte *, struct linpool *);
   void (*rte_insert)(struct network *, struct rte *);
diff --git a/nest/rt-table.c b/nest/rt-table.c
index 9140e938..89e94c55 100644
--- a/nest/rt-table.c
+++ b/nest/rt-table.c
@@ -910,7 +910,6 @@ rte_same(rte *x, rte *y)
     x->attrs == y->attrs &&
     x->pflags == y->pflags &&
     x->src == y->src &&
-    (!x->src->proto->rte_same || x->src->proto->rte_same(x, y)) &&
     rte_is_filtered(x) == rte_is_filtered(y);
 }
 
-- 
cgit v1.2.3


From 60880b539b8886f76961125d89a265c6e1112b7a Mon Sep 17 00:00:00 2001
From: Maria Matejka <mq@ucw.cz>
Date: Tue, 9 Nov 2021 17:42:36 +0100
Subject: Extended route trace: logging Path Identifiers

---
 nest/rt-table.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/nest/rt-table.c b/nest/rt-table.c
index 89e94c55..468624ff 100644
--- a/nest/rt-table.c
+++ b/nest/rt-table.c
@@ -405,8 +405,8 @@ rte_mergable(rte *pri, rte *sec)
 static void
 rte_trace(struct channel *c, rte *e, int dir, char *msg)
 {
-  log(L_TRACE "%s.%s %c %s %N %s",
-      c->proto->name, c->name ?: "?", dir, msg, e->net->n.addr,
+  log(L_TRACE "%s.%s %c %s %N %uL %uG %s",
+      c->proto->name, c->name ?: "?", dir, msg, e->net->n.addr, e->src->private_id, e->src->global_id,
       rta_dest_name(e->attrs->dest));
 }
 
-- 
cgit v1.2.3