From owner-svn-src-head@FreeBSD.ORG Thu Jul 10 12:41:59 2014 Return-Path: Delivered-To: svn-src-head@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 224AF67A; Thu, 10 Jul 2014 12:41:59 +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 EA13426CD; Thu, 10 Jul 2014 12:41:58 +0000 (UTC) Received: from svn.freebsd.org ([127.0.1.70]) by svn.freebsd.org (8.14.8/8.14.8) with ESMTP id s6ACfwOt069148; Thu, 10 Jul 2014 12:41:58 GMT (envelope-from glebius@svn.freebsd.org) Received: (from glebius@localhost) by svn.freebsd.org (8.14.8/8.14.8/Submit) id s6ACfwpq069147; Thu, 10 Jul 2014 12:41:58 GMT (envelope-from glebius@svn.freebsd.org) Message-Id: <201407101241.s6ACfwpq069147@svn.freebsd.org> From: Gleb Smirnoff Date: Thu, 10 Jul 2014 12:41:58 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r268492 - head/sys/netpfil/pf X-SVN-Group: head MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 10 Jul 2014 12:41:59 -0000 Author: glebius Date: Thu Jul 10 12:41:58 2014 New Revision: 268492 URL: http://svnweb.freebsd.org/changeset/base/268492 Log: On machines with strict alignment copy pfsync_state_key from packet on stack to avoid unaligned access. PR: 187381 Submitted by: Lytochkin Boris Modified: head/sys/netpfil/pf/if_pfsync.c Modified: head/sys/netpfil/pf/if_pfsync.c ============================================================================== --- head/sys/netpfil/pf/if_pfsync.c Thu Jul 10 12:15:02 2014 (r268491) +++ head/sys/netpfil/pf/if_pfsync.c Thu Jul 10 12:41:58 2014 (r268492) @@ -402,6 +402,10 @@ static int pfsync_state_import(struct pfsync_state *sp, u_int8_t flags) { struct pfsync_softc *sc = V_pfsyncif; +#ifndef __NO_STRICT_ALIGNMENT + struct pfsync_state_key key[2]; +#endif + struct pfsync_state_key *kw, *ks; struct pf_state *st = NULL; struct pf_state_key *skw = NULL, *sks = NULL; struct pf_rule *r = NULL; @@ -451,12 +455,19 @@ pfsync_state_import(struct pfsync_state if ((skw = uma_zalloc(V_pf_state_key_z, M_NOWAIT)) == NULL) goto cleanup; - if (PF_ANEQ(&sp->key[PF_SK_WIRE].addr[0], - &sp->key[PF_SK_STACK].addr[0], sp->af) || - PF_ANEQ(&sp->key[PF_SK_WIRE].addr[1], - &sp->key[PF_SK_STACK].addr[1], sp->af) || - sp->key[PF_SK_WIRE].port[0] != sp->key[PF_SK_STACK].port[0] || - sp->key[PF_SK_WIRE].port[1] != sp->key[PF_SK_STACK].port[1]) { +#ifndef __NO_STRICT_ALIGNMENT + bcopy(&sp->key, key, sizeof(struct pfsync_state_key) * 2); + kw = &key[PF_SK_WIRE]; + ks = &key[PF_SK_STACK]; +#else + kw = &sp->key[PF_SK_WIRE]; + ks = &sp->key[PF_SK_STACK]; +#endif + + if (PF_ANEQ(&kw->addr[0], &ks->addr[0], sp->af) || + PF_ANEQ(&kw->addr[1], &ks->addr[1], sp->af) || + kw->port[0] != ks->port[0] || + kw->port[1] != ks->port[1]) { sks = uma_zalloc(V_pf_state_key_z, M_NOWAIT); if (sks == NULL) goto cleanup; @@ -468,18 +479,18 @@ pfsync_state_import(struct pfsync_state pfsync_alloc_scrub_memory(&sp->dst, &st->dst)) goto cleanup; - /* copy to state key(s) */ - skw->addr[0] = sp->key[PF_SK_WIRE].addr[0]; - skw->addr[1] = sp->key[PF_SK_WIRE].addr[1]; - skw->port[0] = sp->key[PF_SK_WIRE].port[0]; - skw->port[1] = sp->key[PF_SK_WIRE].port[1]; + /* Copy to state key(s). */ + skw->addr[0] = kw->addr[0]; + skw->addr[1] = kw->addr[1]; + skw->port[0] = kw->port[0]; + skw->port[1] = kw->port[1]; skw->proto = sp->proto; skw->af = sp->af; if (sks != skw) { - sks->addr[0] = sp->key[PF_SK_STACK].addr[0]; - sks->addr[1] = sp->key[PF_SK_STACK].addr[1]; - sks->port[0] = sp->key[PF_SK_STACK].port[0]; - sks->port[1] = sp->key[PF_SK_STACK].port[1]; + sks->addr[0] = ks->addr[0]; + sks->addr[1] = ks->addr[1]; + sks->port[0] = ks->port[0]; + sks->port[1] = ks->port[1]; sks->proto = sp->proto; sks->af = sp->af; }