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When we run into the syncache entry limits syncache_add() tries

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to free the oldest entry in the current bucket row.  The global
entry limit may be smaller than the bucket rows and their limit
combined however.  Thus only try to free a syncache entry if we
found one in this bucket row.

Reported by:	kris
This commit is contained in:
Andre Oppermann 2007-04-17 15:25:14 +00:00
parent 90dea4f9a7
commit 9eab54debf
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=168817
1 changed files with 2 additions and 2 deletions
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4
sys/netinet/tcp_syncache.c
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@ -960,8 +960,8 @@ syncache_add(struct in_conninfo *inc, struct tcpopt *to, struct tcphdr *th,
* entry and insert the new one.
*/
tcpstat.tcps_sc_zonefail++;
sc = TAILQ_LAST(&sch->sch_bucket, sch_head);
syncache_drop(sc, sch);
if ((sc = TAILQ_LAST(&sch->sch_bucket, sch_head)) != NULL)
syncache_drop(sc, sch);
sc = uma_zalloc(tcp_syncache.zone, M_NOWAIT | M_ZERO);
if (sc == NULL) {
if (tcp_syncookies) {