From patchwork Wed Oct 27 20:19:16 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eric Dumazet X-Patchwork-Id: 12588027 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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D1ABEC433F5 for ; Wed, 27 Oct 2021 20:19:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B0C9F6103C for ; Wed, 27 Oct 2021 20:19:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237028AbhJ0UVx (ORCPT ); Wed, 27 Oct 2021 16:21:53 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40248 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231551AbhJ0UVw (ORCPT ); Wed, 27 Oct 2021 16:21:52 -0400 Received: from mail-pj1-x1030.google.com (mail-pj1-x1030.google.com [IPv6:2607:f8b0:4864:20::1030]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 43798C061570 for ; Wed, 27 Oct 2021 13:19:27 -0700 (PDT) Received: by mail-pj1-x1030.google.com with SMTP id gn3so2988491pjb.0 for ; Wed, 27 Oct 2021 13:19:27 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=1EPIWJsHVsYcYSlPSbrXJW+AkNV8CZyPe+OUZ8rIdoI=; b=djVYOIdzEWyU1Ixp0wxpRPWVbQFSQrs42gUZJ4HMRyoLg+zDobzlc9ar8BqA/uUTB2 ijdJlHKsg81RHh7UlbypMGVLC5KRl5Mmw6BdUq3+24W9zcdgLMuPBW25HkFOQzRTNUnP WHZxEdbvZ57CFdP7CP38KEYOq2jWxR/c7PZ7wCVXUa/wsXgb+OcwgJaC+hjyGEpxqDB5 +fCBL4Ieg3iKKV6UQyYN4aYwswYD5bjFnmgEA5DAJVRSoj+RyokASiwxgPTb4NONrTFU epa7HJa7ICo2IGHZsiWNxVD0/GWFqisd3J42A5t4KIjSgBJv0DyS/L7vOyttNm5BxpoK PH2g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=1EPIWJsHVsYcYSlPSbrXJW+AkNV8CZyPe+OUZ8rIdoI=; b=kUq4yMYFL7IhetPlEC961VTEO/VLKtiRFy5uoc6mclr5VrRjcfI1zeAk3Ig+9EPNdv C+tbVhJggFVvkt1AT7K/1AAKytL2dcpdP0bedswQXYCixSl56+dkgBzMUpv/i3I9qBqz O6FFIuBGs4ASsx2zMbAfWUuAUiQsxeqkmjZ+qX9e9YH7BZe6HKE2wa4uZSs9o6nQg177 TQC8kJJT+d1MLUAYJkvv7EXQQQdV+ppxWd5RwS7i8QZdCfMduXcwRTAqdY0H/RCj9S5I 8EoC0UIlpaYjRNUMJI5W7sEQacA0ASZ/ZborGbwmo1K8CuEm9XAgtNHTzefSyb/seE0q Sp7g== X-Gm-Message-State: AOAM530he3g1PyZTAIhse9pw9NzenuRCa3HA5eS5xiGKZwTVvsW9gdlJ 9/eR9ZjPQmUBufjaWbBL7yM= X-Google-Smtp-Source: ABdhPJwGK+0z0mqmSUhZJWAhQ8oYomiArQPhmBf+v2RR4fVzetHMPOtYvWSWgd3k8AzEE4fRtQ/TMg== X-Received: by 2002:a17:90b:1e09:: with SMTP id pg9mr8255701pjb.59.1635365966888; Wed, 27 Oct 2021 13:19:26 -0700 (PDT) Received: from edumazet1.svl.corp.google.com ([2620:15c:2c4:201:19fb:5287:bbfe:fc2a]) by smtp.gmail.com with ESMTPSA id fr12sm5338295pjb.36.2021.10.27.13.19.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 27 Oct 2021 13:19:26 -0700 (PDT) From: Eric Dumazet To: "David S . Miller" , Jakub Kicinski Cc: netdev , Eric Dumazet , Eric Dumazet Subject: [PATCH net-next 0/7] tcp: tx side cleanups Date: Wed, 27 Oct 2021 13:19:16 -0700 Message-Id: <20211027201923.4162520-1-eric.dumazet@gmail.com> X-Mailer: git-send-email 2.33.0.1079.g6e70778dc9-goog MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org From: Eric Dumazet We no longer need to set skb->reserved_tailroom because TCP sendmsg() do not put payload in skb->head anymore. Also do some cleanups around skb->ip_summed/csum, and CP_SKB_CB(skb)->sacked for fresh skbs. Eric Dumazet (7): tcp: remove dead code from tcp_sendmsg_locked() tcp: cleanup tcp_remove_empty_skb() use tcp: remove dead code from tcp_collapse_retrans() tcp: no longer set skb->reserved_tailroom tcp: factorize ip_summed setting tcp: do not clear skb->csum if already zero tcp: do not clear TCP_SKB_CB(skb)->sacked if already zero include/net/tcp.h | 2 +- net/ipv4/tcp.c | 29 +++++++---------------------- net/ipv4/tcp_output.c | 22 +++------------------- net/ipv6/tcp_ipv6.c | 1 - net/mptcp/protocol.c | 7 +++---- 5 files changed, 14 insertions(+), 47 deletions(-)