From patchwork Fri Dec 11 18:44:17 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arjun Roy X-Patchwork-Id: 11969291 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C52E1C4361B for ; Fri, 11 Dec 2020 20:14:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8DC9A23102 for ; Fri, 11 Dec 2020 20:14:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387780AbgLKSpm (ORCPT ); Fri, 11 Dec 2020 13:45:42 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55814 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2389094AbgLKSpM (ORCPT ); Fri, 11 Dec 2020 13:45:12 -0500 Received: from mail-pg1-x52a.google.com (mail-pg1-x52a.google.com [IPv6:2607:f8b0:4864:20::52a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7F2D1C0613CF for ; Fri, 11 Dec 2020 10:44:32 -0800 (PST) Received: by mail-pg1-x52a.google.com with SMTP id g18so7746509pgk.1 for ; Fri, 11 Dec 2020 10:44:32 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=PlHFehdQZ0gXO48oPP/DZo/HZdOVZABi+nBL9/N/2T4=; b=U/mqkYUBoPcejIzKGSlHxgEtT2kz6EklA7lsTbShX1FzIjMeEAx2ZbcmjYqJH5nwMe 1UG5GkYSnmp7YJY99Z0OKgH7wChhtWJaRxXVhN8o9BUkj470a5jxuwU/MDpYK1Lff141 1y7X12hTMgFyrEzQ1kP8+kbbOfBgM5eh/UaxzdFZl55DdHDaoo5vXIxPjHlc2gjAZ0I3 5n6No+bbKxAwz8vfhXkcLmKP6EYzBLXmTy/ikjQWyKtNGIW3+V0dqEPz3uC8huz+gSF5 Z1TA4dAOnQeYcHxgCcb351ol4+Qb64p4kTbak5o/tDgC6OZkUKa+wY8bYZGmRj89Oiqs mFEA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=PlHFehdQZ0gXO48oPP/DZo/HZdOVZABi+nBL9/N/2T4=; b=OVcHASdvMvViOe6FZJCsMpwEuaE9jFyb7Y0Ubk2NLmpcZi+UMGhPUB1S5ELA5BF90H N0QzbhN4XgGeZiIwxi4vwPHAoiUkVYk9vC7xWuIboFDPrsqwXi6sm3ZgcBMmPIBB3cdZ LWKTZxl3PJVWPtxfddc0X5iHaTFr5MLS79WiWw+vtKsS93vPczim/ewATk1AOlkD3DPJ aqWMn5rKB2Ao+SizHFnBWfqMPC+ePkBO2rkb3XQS1ltbIDM/QGsG5sFUKC3IXavW3VH3 es7Yb5Efvn60g971x6d1pByajXMernw6u9osGrU8orgaRKbXv7LzYTOvxRxfGTM3k8I5 e/3Q== X-Gm-Message-State: AOAM530dKR2XSYmNt35tCMDqvBUkpNjUfstLewkOWVklNb52Vid0tPZZ dPekX3B0epZ8M/48ZZnkjzs= X-Google-Smtp-Source: ABdhPJx480B81D6HtCpBZGMVULwrOX/8AA1ZON6oDxlkvT/JG9NtrSKDA+t5ryyaE/7YLMxirZyg4A== X-Received: by 2002:a63:943:: with SMTP id 64mr13295477pgj.80.1607712272181; Fri, 11 Dec 2020 10:44:32 -0800 (PST) Received: from phantasmagoria.svl.corp.google.com ([2620:15c:2c4:201:f693:9fff:feea:f0b9]) by smtp.gmail.com with ESMTPSA id h4sm11783486pgp.8.2020.12.11.10.44.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 11 Dec 2020 10:44:31 -0800 (PST) From: Arjun Roy To: davem@davemloft.net, netdev@vger.kernel.org Cc: arjunroy@google.com, edumazet@google.com, soheil@google.com Subject: [net-next 0/2] Adds CMSG+rx timestamps to TCP rx. zerocopy Date: Fri, 11 Dec 2020 10:44:17 -0800 Message-Id: <20201211184419.1271335-1-arjunroy.kdev@gmail.com> X-Mailer: git-send-email 2.29.2.684.gfbc64c5ab5-goog MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org From: Arjun Roy This patch series provides CMSG and receive timestamp support to TCP receive zerocopy. Patch 1 refactors CMSG pending state for tcp_recvmsg() to avoid the use of magic numbers; patch 2 implements receive timestamp via CMSG support for receive zerocopy, and uses the constants added in patch 1. Arjun Roy (2): tcp: Remove CMSG magic numbers for tcp_recvmsg(). tcp: Add receive timestamp support for receive zerocopy. include/uapi/linux/tcp.h | 4 ++ net/ipv4/tcp.c | 114 ++++++++++++++++++++++++++++----------- 2 files changed, 87 insertions(+), 31 deletions(-)