From owner-svn-src-all@freebsd.org Wed Feb 12 13:04:19 2020 Return-Path: Delivered-To: svn-src-all@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 C61F2237F3E; Wed, 12 Feb 2020 13:04:19 +0000 (UTC) (envelope-from rrs@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) server-signature RSA-PSS (4096 bits) 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 48Hfwz4qG1z4N36; Wed, 12 Feb 2020 13:04:19 +0000 (UTC) (envelope-from rrs@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 A0A4D21916; Wed, 12 Feb 2020 13:04:19 +0000 (UTC) (envelope-from rrs@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id 01CD4JNH051423; Wed, 12 Feb 2020 13:04:19 GMT (envelope-from rrs@FreeBSD.org) Received: (from rrs@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id 01CD4JvF051422; Wed, 12 Feb 2020 13:04:19 GMT (envelope-from rrs@FreeBSD.org) Message-Id: <202002121304.01CD4JvF051422@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: rrs set sender to rrs@FreeBSD.org using -f From: Randall Stewart Date: Wed, 12 Feb 2020 13:04:19 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r357816 - head/sys/netinet X-SVN-Group: head X-SVN-Commit-Author: rrs X-SVN-Commit-Paths: head/sys/netinet X-SVN-Commit-Revision: 357816 X-SVN-Commit-Repository: base 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: 2.1.29 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, 12 Feb 2020 13:04:19 -0000 Author: rrs Date: Wed Feb 12 13:04:19 2020 New Revision: 357816 URL: https://svnweb.freebsd.org/changeset/base/357816 Log: This small fix makes it so we properly follow the RFC and only enable ECN when both the CWR and ECT bits our set within the SYN packet. Sponsored by: Netflix Inc. Differential Revision: https://reviews.freebsd.org/D23645 Modified: head/sys/netinet/tcp_syncache.c Modified: head/sys/netinet/tcp_syncache.c ============================================================================== --- head/sys/netinet/tcp_syncache.c Wed Feb 12 12:40:06 2020 (r357815) +++ head/sys/netinet/tcp_syncache.c Wed Feb 12 13:04:19 2020 (r357816) @@ -1668,7 +1668,8 @@ skip_alloc: sc->sc_peer_mss = to->to_mss; /* peer mss may be zero */ if (ltflags & TF_NOOPT) sc->sc_flags |= SCF_NOOPT; - if ((th->th_flags & (TH_ECE|TH_CWR)) && V_tcp_do_ecn) + if (((th->th_flags & (TH_ECE|TH_CWR)) == (TH_ECE|TH_CWR)) && + V_tcp_do_ecn) sc->sc_flags |= SCF_ECN; if (V_tcp_syncookies)