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bgpd: reduce struct attr_extra allocations/freeing

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Try to use on stack structs for temporary uses.

Signed-off-by: Jorge Boncompte [DTI2] <jorge@dti2.net>
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
This commit is contained in:
Jorge Boncompte [DTI2] 2012-05-07 16:53:05 +00:00 committed by David Lamparter
parent 489d005a9a
commit 558d1fec11
2 changed files with 52 additions and 55 deletions
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4
bgpd/bgp_attr.c
View File

@ -319,9 +319,13 @@ bgp_attr_extra_get (struct attr *attr)
void
bgp_attr_dup (struct attr *new, struct attr *orig)
{
struct attr_extra *extra = new->extra;
*new = *orig;
if (orig->extra)
{
/* if caller provided attr_extra space use it */
if (! extra)
new->extra = bgp_attr_extra_new();
*new->extra = *orig->extra;
}

71
bgpd/bgp_route.c
View File

@ -1051,7 +1051,10 @@ bgp_announce_check (struct bgp_info *ri, struct peer *peer, struct prefix *p,
|| (ri->extra && ri->extra->suppress) )
{
struct bgp_info info;
struct attr dummy_attr = { 0 };
struct attr dummy_attr;
struct attr_extra dummy_extra;
dummy_attr.extra = &dummy_extra;
info.peer = peer;
info.attr = attr;
@ -1074,9 +1077,6 @@ bgp_announce_check (struct bgp_info *ri, struct peer *peer, struct prefix *p,
peer->rmap_type = 0;
if (dummy_attr.extra)
bgp_attr_extra_free (&dummy_attr);
if (ret == RMAP_DENYMATCH)
{
bgp_attr_flush (attr);
@ -1213,8 +1213,6 @@ bgp_announce_check_rsclient (struct bgp_info *ri, struct peer *rsclient,
{
struct attr_extra *attre = attr->extra;
assert (attr->extra);
/* Left nexthop_local unchanged if so configured. */
if ( CHECK_FLAG (rsclient->af_flags[afi][safi],
PEER_FLAG_NEXTHOP_LOCAL_UNCHANGED) )
@ -1429,7 +1427,8 @@ bgp_process_announce_selected (struct peer *peer, struct bgp_info *selected,
struct bgp_node *rn, afi_t afi, safi_t safi)
{
struct prefix *p;
struct attr attr = { 0 };
struct attr attr;
struct attr_extra extra;
p = &rn->p;
@ -1446,6 +1445,9 @@ bgp_process_announce_selected (struct peer *peer, struct bgp_info *selected,
PEER_STATUS_ORF_WAIT_REFRESH))
return 0;
/* It's initialized in bgp_announce_[check|check_rsclient]() */
attr.extra = &extra;
switch (rn->table->type)
{
case BGP_TABLE_MAIN:
@ -1467,8 +1469,6 @@ bgp_process_announce_selected (struct peer *peer, struct bgp_info *selected,
break;
}
bgp_attr_extra_free (&attr);
return 0;
}
@ -1830,7 +1830,8 @@ bgp_update_rsclient (struct peer *rsclient, afi_t afi, safi_t safi,
{
struct bgp_node *rn;
struct bgp *bgp;
struct attr new_attr = { 0 };
struct attr new_attr;
struct attr_extra new_extra;
struct attr *attr_new;
struct attr *attr_new2;
struct bgp_info *ri;
@ -1865,6 +1866,7 @@ bgp_update_rsclient (struct peer *rsclient, afi_t afi, safi_t safi,
goto filtered;
}
new_attr.extra = &new_extra;
bgp_attr_dup (&new_attr, attr);
/* Apply export policy. */
@ -1903,9 +1905,6 @@ bgp_update_rsclient (struct peer *rsclient, afi_t afi, safi_t safi,
}
}
/* new_attr isn't passed to any functions after here */
bgp_attr_extra_free (&new_attr);
/* If the update is implicit withdraw. */
if (ri)
{
@ -1994,8 +1993,6 @@ bgp_update_rsclient (struct peer *rsclient, afi_t afi, safi_t safi,
/* Process change. */
bgp_process (bgp, rn, afi, safi);
bgp_attr_extra_free (&new_attr);
return;
filtered:
@ -2013,9 +2010,6 @@ bgp_update_rsclient (struct peer *rsclient, afi_t afi, safi_t safi,
bgp_unlock_node (rn);
if (new_attr.extra)
bgp_attr_extra_free (&new_attr);
return;
}
@ -2060,7 +2054,8 @@ bgp_update_main (struct peer *peer, struct prefix *p, struct attr *attr,
int aspath_loop_count = 0;
struct bgp_node *rn;
struct bgp *bgp;
struct attr new_attr = { 0 };
struct attr new_attr;
struct attr_extra new_extra;
struct attr *attr_new;
struct bgp_info *ri;
struct bgp_info *new;
@ -2126,9 +2121,10 @@ bgp_update_main (struct peer *peer, struct prefix *p, struct attr *attr,
goto filtered;
}
/* Apply incoming route-map. */
new_attr.extra = &new_extra;
bgp_attr_dup (&new_attr, attr);
/* Apply incoming route-map. */
if (bgp_input_modifier (peer, p, &new_attr, afi, safi) == RMAP_DENY)
{
reason = "route-map;";
@ -2207,7 +2203,6 @@ bgp_update_main (struct peer *peer, struct prefix *p, struct attr *attr,
bgp_unlock_node (rn);
bgp_attr_unintern (&attr_new);
bgp_attr_extra_free (&new_attr);
return 0;
}
@ -2269,7 +2264,6 @@ bgp_update_main (struct peer *peer, struct prefix *p, struct attr *attr,
if (ret == BGP_DAMP_SUPPRESSED)
{
bgp_unlock_node (rn);
bgp_attr_extra_free (&new_attr);
return 0;
}
}
@ -2295,7 +2289,6 @@ bgp_update_main (struct peer *peer, struct prefix *p, struct attr *attr,
bgp_process (bgp, rn, afi, safi);
bgp_unlock_node (rn);
bgp_attr_extra_free (&new_attr);
return 0;
}
@ -2346,8 +2339,6 @@ bgp_update_main (struct peer *peer, struct prefix *p, struct attr *attr,
/* route_node_get lock */
bgp_unlock_node (rn);
bgp_attr_extra_free (&new_attr);
/* If maximum prefix count is configured and current prefix
count exeed it. */
if (bgp_maximum_prefix_overflow (peer, afi, safi, 0))
@ -2373,8 +2364,6 @@ bgp_update_main (struct peer *peer, struct prefix *p, struct attr *attr,
bgp_unlock_node (rn);
bgp_attr_extra_free (&new_attr);
return 0;
}
@ -2550,7 +2539,8 @@ bgp_announce_table (struct peer *peer, afi_t afi, safi_t safi,
{
struct bgp_node *rn;
struct bgp_info *ri;
struct attr attr = { 0 };
struct attr attr;
struct attr_extra extra;
if (! table)
table = (rsclient) ? peer->rib[afi][safi] : peer->bgp->rib[afi][safi];
@ -2559,6 +2549,9 @@ bgp_announce_table (struct peer *peer, afi_t afi, safi_t safi,
&& CHECK_FLAG (peer->af_flags[afi][safi], PEER_FLAG_DEFAULT_ORIGINATE))
bgp_default_originate (peer, afi, safi, 0);
/* It's initialized in bgp_announce_[check|check_rsclient]() */
attr.extra = &extra;
for (rn = bgp_table_top (table); rn; rn = bgp_route_next(rn))
for (ri = rn->info; ri; ri = ri->next)
if (CHECK_FLAG (ri->flags, BGP_INFO_SELECTED) && ri->peer != peer)
@ -2569,8 +2562,6 @@ bgp_announce_table (struct peer *peer, afi_t afi, safi_t safi,
bgp_adj_out_set (rn, peer, &rn->p, &attr, afi, safi, ri);
else
bgp_adj_out_unset (rn, peer, &rn->p, afi, safi);
bgp_attr_extra_free (&attr);
}
}
@ -3267,7 +3258,8 @@ bgp_static_update_rsclient (struct peer *rsclient, struct prefix *p,
struct bgp_info info;
struct attr *attr_new;
struct attr attr;
struct attr new_attr = { 0 };
struct attr new_attr;
struct attr_extra new_extra;
struct bgp *bgp;
int ret;
char buf[SU_ADDRSTRLEN];
@ -3320,6 +3312,7 @@ bgp_static_update_rsclient (struct peer *rsclient, struct prefix *p,
else
attr_new = bgp_attr_intern (&attr);
new_attr.extra = &new_extra;
bgp_attr_dup(&new_attr, attr_new);
SET_FLAG (bgp->peer_self->rmap_type, PEER_RMAP_TYPE_NETWORK);
@ -3349,7 +3342,6 @@ bgp_static_update_rsclient (struct peer *rsclient, struct prefix *p,
bgp_attr_unintern (&attr_new);
attr_new = bgp_attr_intern (&new_attr);
bgp_attr_extra_free (&new_attr);
for (ri = rn->info; ri; ri = ri->next)
if (ri->peer == bgp->peer_self && ri->type == ZEBRA_ROUTE_BGP
@ -5349,7 +5341,6 @@ bgp_redistribute_add (struct prefix *p, const struct in_addr *nexthop,
struct bgp_info info;
struct bgp_node *bn;
struct attr attr;
struct attr attr_new = { 0 };
struct attr *new_attr;
afi_t afi;
int ret;
@ -5377,7 +5368,11 @@ bgp_redistribute_add (struct prefix *p, const struct in_addr *nexthop,
if (bgp->redist[afi][type])
{
struct attr attr_new;
struct attr_extra extra_new;
/* Copy attribute for modification. */
attr_new.extra = &extra_new;
bgp_attr_dup (&attr_new, &attr);
if (bgp->redist_metric_flag[afi][type])
@ -5400,7 +5395,6 @@ bgp_redistribute_add (struct prefix *p, const struct in_addr *nexthop,
{
/* Free uninterned attribute. */
bgp_attr_flush (&attr_new);
bgp_attr_extra_free (&attr_new);
/* Unintern original. */
aspath_unintern (&attr.aspath);
@ -5414,7 +5408,6 @@ bgp_redistribute_add (struct prefix *p, const struct in_addr *nexthop,
afi, SAFI_UNICAST, p, NULL);
new_attr = bgp_attr_intern (&attr_new);
bgp_attr_extra_free (&attr_new);
for (bi = bn->info; bi; bi = bi->next)
if (bi->peer == bgp->peer_self
@ -6183,17 +6176,17 @@ bgp_show_table (struct vty *vty, struct bgp_table *table, struct in_addr *router
{
struct route_map *rmap = output_arg;
struct bgp_info binfo;
struct attr dummy_attr = { 0 };
struct attr dummy_attr;
struct attr_extra dummy_extra;
int ret;
dummy_attr.extra = &dummy_extra;
bgp_attr_dup (&dummy_attr, ri->attr);
binfo.peer = ri->peer;
binfo.attr = &dummy_attr;
ret = route_map_apply (rmap, &rn->p, RMAP_BGP, &binfo);
bgp_attr_extra_free (&dummy_attr);
if (ret == RMAP_DENYMATCH)
continue;
}