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bgpd : route agg. with comm attr is consuming lot of cycles.

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While configuring aggregate route prepare the hash table
first, then prepare the aggregated standard comm value
and then do the unique sort once for standard community.

Signed-off-by: vishaldhingra<vdhingra@vmware.com>
This commit is contained in:
vdhingra 2019-08-19 00:47:50 -07:00
parent f1eb1f0526
commit 21fec67453
3 changed files with 84 additions and 30 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

95
bgpd/bgp_community.c
View File

@ -910,15 +910,13 @@ static void *bgp_aggr_communty_hash_alloc(void *p)
static void bgp_aggr_community_prepare(struct hash_backet *hb, void *arg)
{
struct community *commerge = NULL;
struct community *hb_community = hb->data;
struct community **aggr_community = arg;
if (*aggr_community) {
commerge = community_merge(*aggr_community, hb_community);
*aggr_community = community_uniq_sort(commerge);
community_free(&commerge);
} else
if (*aggr_community)
*aggr_community = community_merge(*aggr_community,
hb_community);
else
*aggr_community = community_dup(hb_community);
}
@ -931,6 +929,14 @@ void bgp_aggr_community_remove(void *arg)
void bgp_compute_aggregate_community(struct bgp_aggregate *aggregate,
struct community *community)
{
bgp_compute_aggregate_community_hash(aggregate, community);
bgp_compute_aggregate_community_val(aggregate);
}
void bgp_compute_aggregate_community_hash(struct bgp_aggregate *aggregate,
struct community *community)
{
struct community *aggr_community = NULL;
@ -951,32 +957,47 @@ void bgp_compute_aggregate_community(struct bgp_aggregate *aggregate,
*/
aggr_community = hash_get(aggregate->community_hash, community,
bgp_aggr_communty_hash_alloc);
/* Re-compute aggregate's community.
*/
if (aggregate->community)
community_free(&aggregate->community);
hash_iterate(aggregate->community_hash,
bgp_aggr_community_prepare,
&aggregate->community);
}
/* Increment refernce counter.
/* Increment reference counter.
*/
aggr_community->refcnt++;
}
void bgp_compute_aggregate_community_val(struct bgp_aggregate *aggregate)
{
struct community *commerge = NULL;
if (aggregate == NULL)
return;
/* Re-compute aggregate's community.
*/
if (aggregate->community)
community_free(&aggregate->community);
if (aggregate->community_hash &&
aggregate->community_hash->count) {
hash_iterate(aggregate->community_hash,
bgp_aggr_community_prepare,
&aggregate->community);
commerge = aggregate->community;
aggregate->community = community_uniq_sort(commerge);
if (commerge)
community_free(&commerge);
}
}
void bgp_remove_community_from_aggregate(struct bgp_aggregate *aggregate,
struct community *community)
{
struct community *aggr_community = NULL;
struct community *ret_comm = NULL;
if ((aggregate == NULL) || (community == NULL))
return;
if (aggregate->community_hash == NULL)
if ((!aggregate)
|| (!aggregate->community_hash)
|| (!community))
return;
/* Look-up the community in the hash.
@ -990,13 +1011,33 @@ void bgp_remove_community_from_aggregate(struct bgp_aggregate *aggregate,
aggr_community);
community_free(&ret_comm);
community_free(&aggregate->community);
/* Compute aggregate's community.
*/
hash_iterate(aggregate->community_hash,
bgp_aggr_community_prepare,
&aggregate->community);
bgp_compute_aggregate_community_val(aggregate);
}
}
}
void bgp_remove_comm_from_aggregate_hash(struct bgp_aggregate *aggregate,
struct community *community)
{
struct community *aggr_community = NULL;
struct community *ret_comm = NULL;
if ((!aggregate)
|| (!aggregate->community_hash)
|| (!community))
return;
/* Look-up the community in the hash.
*/
aggr_community = bgp_aggr_community_lookup(aggregate, community);
if (aggr_community) {
aggr_community->refcnt--;
if (aggr_community->refcnt == 0) {
ret_comm = hash_release(aggregate->community_hash,
aggr_community);
community_free(&ret_comm);
}
}
}

8
bgpd/bgp_community.h
View File

@ -92,8 +92,16 @@ extern struct hash *community_hash(void);
extern uint32_t community_val_get(struct community *com, int i);
extern void bgp_compute_aggregate_community(struct bgp_aggregate *aggregate,
struct community *community);
extern void bgp_compute_aggregate_community_val(
struct bgp_aggregate *aggregate);
extern void bgp_compute_aggregate_community_hash(
struct bgp_aggregate *aggregate,
struct community *community);
extern void bgp_remove_community_from_aggregate(struct bgp_aggregate *aggregate,
struct community *community);
extern void bgp_remove_comm_from_aggregate_hash(struct bgp_aggregate *aggregate,
struct community *community);
extern void bgp_aggr_community_remove(void *arg);
#endif /* _QUAGGA_BGP_COMMUNITY_H */

11
bgpd/bgp_route.c
View File

@ -5933,7 +5933,7 @@ void bgp_aggregate_route(struct bgp *bgp, struct prefix *p,
/* Compute aggregate route's community.
*/
if (pi->attr->community)
bgp_compute_aggregate_community(
bgp_compute_aggregate_community_hash(
aggregate,
pi->attr->community);
@ -5954,8 +5954,11 @@ void bgp_aggregate_route(struct bgp *bgp, struct prefix *p,
if (match)
bgp_process(bgp, rn, afi, safi);
}
if (aggregate->as_set)
if (aggregate->as_set) {
bgp_compute_aggregate_community_val(aggregate);
bgp_compute_aggregate_lcommunity_val(aggregate);
}
bgp_unlock_node(top);
@ -6044,7 +6047,7 @@ void bgp_aggregate_delete(struct bgp *bgp, struct prefix *p, afi_t afi,
if (pi->attr->community)
/* Remove community from aggregate.
*/
bgp_remove_community_from_aggregate(
bgp_remove_comm_from_aggregate_hash(
aggregate,
pi->attr->community);
@ -6070,6 +6073,8 @@ void bgp_aggregate_delete(struct bgp *bgp, struct prefix *p, afi_t afi,
bgp_process(bgp, rn, afi, safi);
}
if (aggregate->as_set) {
if (aggregate->community)
community_free(&aggregate->community);
if (aggregate->lcommunity)
lcommunity_free(&aggregate->lcommunity);
}