Date: Sat, 8 Dec 2007 03:16:37 GMT From: Kip Macy <kmacy@FreeBSD.org> To: Perforce Change Reviews <perforce@freebsd.org> Subject: PERFORCE change 130453 for review Message-ID: <200712080316.lB83Gb6L017635@repoman.freebsd.org>
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http://perforce.freebsd.org/chv.cgi?CH=130453 Change 130453 by kmacy@kmacy:storage:toestack on 2007/12/08 03:15:45 add sysctl to drop all syncache entries don't skip offloaded entries from syncache timeout Affected files ... .. //depot/projects/toestack/sys/netinet/tcp_syncache.c#9 edit Differences ... ==== //depot/projects/toestack/sys/netinet/tcp_syncache.c#9 (text+ko) ==== @@ -195,6 +195,10 @@ SYSCTL_NODE(_net_inet_tcp, OID_AUTO, syncache, CTLFLAG_RW, 0, "TCP SYN cache"); +static int tcp_syncache_drop_all(SYSCTL_HANDLER_ARGS); +SYSCTL_PROC(_net_inet_tcp_syncache, OID_AUTO, drop_all, CTLTYPE_INT | CTLFLAG_RW, + 0, 0, tcp_syncache_drop_all, "IU", "drop all elements in the syncache"); + SYSCTL_INT(_net_inet_tcp_syncache, OID_AUTO, bucketlimit, CTLFLAG_RDTUN, &tcp_syncache.bucket_limit, 0, "Per-bucket hash limit for syncache"); @@ -407,10 +411,6 @@ sch->sch_nextc = sc->sc_rxttime; continue; } -#ifndef DISABLE_TCP_OFFLOAD - if (sc->sc_inc.inc_eh != NULL) - continue; -#endif if (sc->sc_rxmits > tcp_syncache.rexmt_limit) { if ((s = tcp_log_addrs(&sc->sc_inc, NULL, NULL, NULL))) { log(LOG_DEBUG, "%s; %s: Retransmits exhausted, " @@ -1727,3 +1727,29 @@ return error; } +static int +tcp_syncache_drop_all(SYSCTL_HANDLER_ARGS) +{ + struct syncache_head *sch = tcp_syncache.hashbase; + struct syncache *sc, *nsc; + int error, v; + + v = 0; + error = sysctl_handle_int(oidp, &v, 0, req); + if (error) + return (error); + if (v == 0) + return (0); + + printf("dropping syncache entries\n"); + SCH_LOCK(sch); + TAILQ_FOREACH_SAFE(sc, &sch->sch_bucket, sc_hash, nsc) { + printf("dropping %p\n", sc); + + syncache_drop(sc, sch); + } + SCH_UNLOCK(sch); + + return (0); +} +
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