From owner-freebsd-net@freebsd.org Thu May 21 19:46:27 2020 Return-Path: Delivered-To: freebsd-net@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 598232F2BE7 for ; Thu, 21 May 2020 19:46:27 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mailman.nyi.freebsd.org (unknown [127.0.1.3]) by mx1.freebsd.org (Postfix) with ESMTP id 49Sg9H1nHcz4D6S for ; Thu, 21 May 2020 19:46:27 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: by mailman.nyi.freebsd.org (Postfix) id 3B6822F2CC6; Thu, 21 May 2020 19:46:27 +0000 (UTC) Delivered-To: net@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 3B26F2F2BE6 for ; Thu, 21 May 2020 19:46:27 +0000 (UTC) (envelope-from bugzilla-noreply@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 49Sg9H0mDlz4DMl for ; Thu, 21 May 2020 19:46:27 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2610:1c1:1:606c::50:1d]) (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 did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 1582712D0B for ; Thu, 21 May 2020 19:46:27 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.5]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id 04LJkQs0009432 for ; Thu, 21 May 2020 19:46:26 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from bugzilla@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 04LJkQn7009431 for net@FreeBSD.org; Thu, 21 May 2020 19:46:26 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: bugzilla set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: net@FreeBSD.org Subject: [Bug 235256] [net] IW10 without ABC leads to initial window of 11 Segments Date: Thu, 21 May 2020 19:46:26 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: CURRENT X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: commit-hook@freebsd.org X-Bugzilla-Status: In Progress X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: tuexen@freebsd.org X-Bugzilla-Flags: mfc-stable12+ mfc-stable11? X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.33 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 21 May 2020 19:46:27 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D235256 --- Comment #9 from commit-hook@freebsd.org --- A commit references this bug: Author: rscheff Date: Thu May 21 19:46:12 UTC 2020 New revision: 361342 URL: https://svnweb.freebsd.org/changeset/base/361342 Log: MFC r360477: Correctly set up the initial TCP congestion window in all ca= ses by not including the SYN bit sequence space in cwnd related calculations. Snd_und is adjusted explicitly in all cases, outside the cwnd update, instead. This fixes an off-by-one conformance issue with regular TCP sessions not using Appropriate Byte Counting (RFC3465), sending one more packet during the initial window than expected. PR: 235256 Reviewed by: tuexen (mentor), rgrimes (mentor, blanket) Approved by: tuexen (mentor), rgrimes (mentor, blanket) MFC after: 3 weeks Sponsored by: NetApp, Inc. Differential Revision: https://reviews.freebsd.org/D19000 Changes: _U stable/12/ stable/12/sys/netinet/tcp_input.c stable/12/sys/netinet/tcp_stacks/rack.c --=20 You are receiving this mail because: You are on the CC list for the bug.=