From owner-svn-src-all@FreeBSD.ORG Wed May 20 01:08:02 2015 Return-Path: Delivered-To: svn-src-all@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 1B6C8130; Wed, 20 May 2015 01:08:02 +0000 (UTC) Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:1900:2254:2068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id E4437116F; Wed, 20 May 2015 01:08:01 +0000 (UTC) Received: from svn.freebsd.org ([127.0.1.70]) by svn.freebsd.org (8.14.9/8.14.9) with ESMTP id t4K181j7006312; Wed, 20 May 2015 01:08:01 GMT (envelope-from hiren@FreeBSD.org) Received: (from hiren@localhost) by svn.freebsd.org (8.14.9/8.14.9/Submit) id t4K181No006311; Wed, 20 May 2015 01:08:01 GMT (envelope-from hiren@FreeBSD.org) Message-Id: <201505200108.t4K181No006311@svn.freebsd.org> X-Authentication-Warning: svn.freebsd.org: hiren set sender to hiren@FreeBSD.org using -f From: Hiren Panchasara Date: Wed, 20 May 2015 01:08:01 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r283136 - head/sys/netinet X-SVN-Group: head MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 20 May 2015 01:08:02 -0000 Author: hiren Date: Wed May 20 01:08:01 2015 New Revision: 283136 URL: https://svnweb.freebsd.org/changeset/base/283136 Log: Add a new sysctl net.inet.tcp.hostcache.purgenow=1 to expire and purge all entries in hostcache immediately. In collaboration with: bz, rwatson MFC after: 1 week Relnotes: yes Sponsored by: Limelight Networks Modified: head/sys/netinet/tcp_hostcache.c Modified: head/sys/netinet/tcp_hostcache.c ============================================================================== --- head/sys/netinet/tcp_hostcache.c Tue May 19 23:53:25 2015 (r283135) +++ head/sys/netinet/tcp_hostcache.c Wed May 20 01:08:01 2015 (r283136) @@ -117,6 +117,7 @@ static VNET_DEFINE(struct callout, tcp_h static struct hc_metrics *tcp_hc_lookup(struct in_conninfo *); static struct hc_metrics *tcp_hc_insert(struct in_conninfo *); static int sysctl_tcp_hc_list(SYSCTL_HANDLER_ARGS); +static int sysctl_tcp_hc_purgenow(SYSCTL_HANDLER_ARGS); static void tcp_hc_purge_internal(int); static void tcp_hc_purge(void *); @@ -155,6 +156,9 @@ SYSCTL_PROC(_net_inet_tcp_hostcache, OID CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_SKIP, 0, 0, sysctl_tcp_hc_list, "A", "List of all hostcache entries"); +SYSCTL_PROC(_net_inet_tcp_hostcache, OID_AUTO, purgenow, + CTLTYPE_INT | CTLFLAG_RW, NULL, 0, + sysctl_tcp_hc_purgenow, "I", "Immediately purge all entries"); static MALLOC_DEFINE(M_HOSTCACHE, "hostcache", "TCP hostcache"); @@ -696,3 +700,24 @@ tcp_hc_purge(void *arg) tcp_hc_purge, arg); CURVNET_RESTORE(); } + +/* + * Expire and purge all entries in hostcache immediately. + */ +static int +sysctl_tcp_hc_purgenow(SYSCTL_HANDLER_ARGS) +{ + int error, val; + + val = 0; + error = sysctl_handle_int(oidp, &val, 0, req); + if (error || !req->newptr) + return (error); + + tcp_hc_purge_internal(1); + + callout_reset(&V_tcp_hc_callout, V_tcp_hostcache.prune * hz, + tcp_hc_purge, curvnet); + + return (0); +}