From owner-svn-src-head@freebsd.org Fri Sep 11 10:07:10 2020 Return-Path: Delivered-To: svn-src-head@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 7FD763D499D; Fri, 11 Sep 2020 10:07:10 +0000 (UTC) (envelope-from ae@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4Bnryk2rtXz46Nk; Fri, 11 Sep 2020 10:07:10 +0000 (UTC) (envelope-from ae@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 4614922154; Fri, 11 Sep 2020 10:07:10 +0000 (UTC) (envelope-from ae@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id 08BA7AUx038703; Fri, 11 Sep 2020 10:07:10 GMT (envelope-from ae@FreeBSD.org) Received: (from ae@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id 08BA7AbB038702; Fri, 11 Sep 2020 10:07:10 GMT (envelope-from ae@FreeBSD.org) Message-Id: <202009111007.08BA7AbB038702@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: ae set sender to ae@FreeBSD.org using -f From: "Andrey V. Elsukov" Date: Fri, 11 Sep 2020 10:07:10 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r365628 - head/sbin/ipfw X-SVN-Group: head X-SVN-Commit-Author: ae X-SVN-Commit-Paths: head/sbin/ipfw X-SVN-Commit-Revision: 365628 X-SVN-Commit-Repository: base 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: 2.1.33 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: Fri, 11 Sep 2020 10:07:10 -0000 Author: ae Date: Fri Sep 11 10:07:09 2020 New Revision: 365628 URL: https://svnweb.freebsd.org/changeset/base/365628 Log: Fix compatibility regression after r364117. Properly handle the case, when some opcode keywords follow after the `frag` opcode without additional options. Reported by: Evgeniy Khramtsov Modified: head/sbin/ipfw/ipfw2.c Modified: head/sbin/ipfw/ipfw2.c ============================================================================== --- head/sbin/ipfw/ipfw2.c Fri Sep 11 10:05:44 2020 (r365627) +++ head/sbin/ipfw/ipfw2.c Fri Sep 11 10:07:09 2020 (r365628) @@ -4560,17 +4560,24 @@ read_options: fill_cmd(cmd, O_DIVERTED, 0, 2); break; - case TOK_FRAG: - fill_flags_cmd(cmd, O_FRAG, f_ipoff, *av); - /* - * Compatibility: no argument after "frag" - * keyword equals to "frag offset". - */ - if (cmd->arg1 == 0) - cmd->arg1 = 0x1; - else + case TOK_FRAG: { + uint32_t set = 0, clear = 0; + + if (*av != NULL && fill_flags(f_ipoff, *av, NULL, + &set, &clear) == 0) av++; + else { + /* + * Compatibility: no argument after "frag" + * keyword equals to "frag offset". + */ + set = 0x01; + clear = 0; + } + fill_cmd(cmd, O_FRAG, 0, + (set & 0xff) | ( (clear & 0xff) << 8)); break; + } case TOK_LAYER2: fill_cmd(cmd, O_LAYER2, 0, 0);