From patchwork Tue Apr 19 17:18:22 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paolo Abeni X-Patchwork-Id: 12819228 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 81497C433EF for ; Tue, 19 Apr 2022 17:19:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S245118AbiDSRVq (ORCPT ); Tue, 19 Apr 2022 13:21:46 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44020 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237020AbiDSRVp (ORCPT ); Tue, 19 Apr 2022 13:21:45 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 78C8935DEC for ; Tue, 19 Apr 2022 10:19:02 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1650388741; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=eVdLWTfbtNBd3TEFtmiqkLvoxJk9+8k+wCtc4CdxD5E=; b=Y92TitcqnP9UAuM04iQb4pwolqI104sVaAp7JsO9eVwD7/FknBTjBC70BCs3ZGUktsAuZM IbL8tzAHMNff4K+iJvFdgHdzWo+O4FTwDXB9Ve9fk3ouKeyFCKe95TpbGbpU07A7NS89hi rrpHH743GGmwACFdxXWLK/BXKLhHrVE= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-395-GJBA5tKkMsaDCTq-yAF2UA-1; Tue, 19 Apr 2022 13:18:59 -0400 X-MC-Unique: GJBA5tKkMsaDCTq-yAF2UA-1 Received: from smtp.corp.redhat.com (int-mx10.intmail.prod.int.rdu2.redhat.com [10.11.54.10]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 8E4631802A1B; Tue, 19 Apr 2022 17:18:45 +0000 (UTC) Received: from gerbillo.redhat.com (unknown [10.39.193.165]) by smtp.corp.redhat.com (Postfix) with ESMTP id CE50640146E; Tue, 19 Apr 2022 17:18:44 +0000 (UTC) From: Paolo Abeni To: netdev@vger.kernel.org Cc: Eric Dumazet , mptcp@lists.linux.dev Subject: [RFC PATCH 0/2] mptcp: never shrink offered window Date: Tue, 19 Apr 2022 19:18:22 +0200 Message-Id: MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.85 on 10.11.54.10 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-State: RFC There patches are part of a somewhat largish series to implement more strict RFC compliance for the MPTCP-level congestion window handling, solving some tput instability issues. The obtain the above we need to modify an existing MPTCP hook, touching the TCP code (in patch 1/2), ence the RFC. The later patch demonstrates the actual usage of such hook. Paolo Abeni (2): tcp: allow MPTCP to update the announced window. mptcp: never shrink offered window include/net/mptcp.h | 2 +- net/ipv4/tcp_output.c | 14 ++++++----- net/mptcp/options.c | 54 ++++++++++++++++++++++++++++++++++++------- 3 files changed, 55 insertions(+), 15 deletions(-)