From patchwork Fri May 13 15:26:05 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pavel Begunkov X-Patchwork-Id: 12849006 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 3EC67C433F5 for ; Fri, 13 May 2022 15:26:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1381967AbiEMP0u (ORCPT ); Fri, 13 May 2022 11:26:50 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53966 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233504AbiEMP0s (ORCPT ); Fri, 13 May 2022 11:26:48 -0400 Received: from mail-ej1-x631.google.com (mail-ej1-x631.google.com [IPv6:2a00:1450:4864:20::631]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 95E2E1658A; Fri, 13 May 2022 08:26:47 -0700 (PDT) Received: by mail-ej1-x631.google.com with SMTP id z2so16958770ejj.3; Fri, 13 May 2022 08:26:47 -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=vRuutjdRJtG/Bb6H7ojUi4zmCk2FQZReoeZCIJzw81M=; b=LkEgXf2w6UMjPRp+EEKOMcgP18cf7ck6G6vrxTCsOWGNrB0CoG9LVg9CJD08Q/YPu7 Ydg431ZCdjoZN8VdlWcJCD/nyByOpEKWPM8PSiu5CVPEgu4s0d36agUYedtEaQbS/wMq oZQgC42ce6hpd0Z1tpVNHwCutdsyZgYgSbJaLOuHxgZwl3t+AVjnBaxRVB4NDTxzdr2b lEK8hSVn/qJC6+SsSFOAo+bklvXFoSqzjur1wPqvMrs7F0R0LDPsl099ouNsG3OMQsP5 kC0id9t3+f4dqzbOsN53xUVSSVDRzm3ihjvNUahjW/t8dw5GxN2UesijyUoXe4KdtFGS 2fxg== 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=vRuutjdRJtG/Bb6H7ojUi4zmCk2FQZReoeZCIJzw81M=; b=i9qemb1VtvzoZmXD8ZfEw+S67scD1o1Y9KL3JZ3cwYYecul+VR9X0GphN+ZS/vrEi/ NQs1wMezmhlKyvfM9dfzEelpAEXeYxiCFqgU2U3CC9YWYz094lKRZnkVUYn2c02sDcj5 aw4xNoBfQ3x9p0RzVzVBjIAjuluPi8sCBMxRlkrE2IlDNt0QQPKKwAw05OGC7wmGWd1a G2vCKnWofm7f/p/4QPfeKFNbAnB0rN9ljh5c7XY7zetombAUEb5vjisc56UXh+QhqR4D G1b7wkP8oPlEKKgZTK3S4rQrN3A90PgMJ6HUNaD66BKEWb6aEeCo5whFgBZe4V161jf4 W93Q== X-Gm-Message-State: AOAM532TuuTf/nsTtlClE72j2OPNBDzYepfrZR4iXkckUvJtBIryvSrX gytlVL9SfvWaGwYWIe0b5qFkDO/+cv0= X-Google-Smtp-Source: ABdhPJyM/9MZZET5coTyt+GBl5zb4UJ8tl+qeDPYXiJMe64X4i/VKkyKiFHry68DV+r56JbtDco8Rg== X-Received: by 2002:a17:907:608f:b0:6f6:1155:99ab with SMTP id ht15-20020a170907608f00b006f6115599abmr4580865ejc.306.1652455605710; Fri, 13 May 2022 08:26:45 -0700 (PDT) Received: from 127.0.0.1localhost ([185.69.144.161]) by smtp.gmail.com with ESMTPSA id j13-20020a508a8d000000b0042617ba63cbsm1015351edj.85.2022.05.13.08.26.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 13 May 2022 08:26:45 -0700 (PDT) From: Pavel Begunkov To: netdev@vger.kernel.org, "David S . Miller" , Jakub Kicinski , Paolo Abeni Cc: David Ahern , Eric Dumazet , linux-kernel@vger.kernel.org, Pavel Begunkov Subject: [PATCH net-next v3 00/10] UDP/IPv6 refactoring Date: Fri, 13 May 2022 16:26:05 +0100 Message-Id: X-Mailer: git-send-email 2.36.0 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org Refactor UDP/IPv6 and especially udpv6_sendmsg() paths. The end result looks cleaner than it was before and the series also removes a bunch of instructions and other overhead from the hot path positively affecting performance. Testing over dummy netdev with 16 byte packets yields 2240481 tx/s, comparing to 2203417 tx/s previously, which is around +1.6% v2: no code changes, just resending properly v3: remove patch moving getfrag callback assignment add benchmark numbers Pavel Begunkov (10): ipv6: optimise ipcm6 cookie init udp/ipv6: move pending section of udpv6_sendmsg udp/ipv6: prioritise the ip6 path over ip4 checks udp/ipv6: optimise udpv6_sendmsg() daddr checks udp/ipv6: optimise out daddr reassignment udp/ipv6: clean up udpv6_sendmsg's saddr init ipv6: partially inline fl6_update_dst() ipv6: refactor opts push in __ip6_make_skb() ipv6: improve opt-less __ip6_make_skb() ipv6: clean up ip6_setup_cork include/net/ipv6.h | 24 +++---- net/ipv6/datagram.c | 4 +- net/ipv6/exthdrs.c | 15 ++--- net/ipv6/ip6_output.c | 53 +++++++-------- net/ipv6/raw.c | 8 +-- net/ipv6/udp.c | 153 ++++++++++++++++++++---------------------- net/l2tp/l2tp_ip6.c | 8 +-- 7 files changed, 120 insertions(+), 145 deletions(-)