From mboxrd@z Thu Jan 1 00:00:00 1970 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 BC0A9C433FE for ; Thu, 27 Jan 2022 09:13:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238345AbiA0JNg (ORCPT ); Thu, 27 Jan 2022 04:13:36 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59038 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232457AbiA0JNc (ORCPT ); Thu, 27 Jan 2022 04:13:32 -0500 Received: from mail-pg1-x543.google.com (mail-pg1-x543.google.com [IPv6:2607:f8b0:4864:20::543]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1636CC061714; Thu, 27 Jan 2022 01:13:32 -0800 (PST) Received: by mail-pg1-x543.google.com with SMTP id p125so1769353pga.2; Thu, 27 Jan 2022 01:13:32 -0800 (PST) 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=0RkjT3TuOyWwEVOpPIQVPsW4Hb2Nu8eZN8Ji5YobBOo=; b=I3R+Jvj96JIadQ2/TT5eD/9ziY+SyLlJrEpPEXILSrAY21PUh8y++4BR48gts9u5Te y/5xuwtsIRC+VO75McL3BKrmQ2+rz4Qr+H+zj+u+GgVsm46lLsXpZc4vg3PpS5ylJfq5 rlv3j5bJltr3ZUNbLEuivEnbbg3HWbqsa2lGnaZFpuAdUdGq3MN2BT9aiVnyF/pAORr/ srb1nOcHTwh2pYtI0DZwmrVK46LeTtSLkmxMiG5+IV5H/kYCGEujEAgPcsVQD4tDAYHQ MkehIW+ui5nKZHfSQ9/lIvzQax1FQOofoJEXLllAVYtVQnTOLAxu0bZXCPfud/HGV4Na mW5w== 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=0RkjT3TuOyWwEVOpPIQVPsW4Hb2Nu8eZN8Ji5YobBOo=; b=sElctzqQYfz3gXjh6IAJetFtKYuNjVIDl2PKDgIpud6/wov3OZjHR07vAfYinuJakI WI7ZWpp0PdnhL1/+StuK81LFIykVCodYEqqtMsmQd4CWGdqUWgFq8ZgUhLndcradrcOr 8QqdwLsuracL3udo+j2fr+7ICvkVL/z0Yjn036WH0vkVul6/6aNjU8bJyeYtBu0VBtay omR4Rgz2RE07Wh6VVsQq8YYOJaiUg4DdeYpwuDbD28Wu4hfuX0BPTd+k2YoxwG7C/kSx Oe4O3r+f3MiC2wigqNv1cMN5s3IGDUCRghf0nB9IMG5l63s162tx0FJD2LvQa/py5Qjq vxIg== X-Gm-Message-State: AOAM532d++l0qnFA0lO9e0RB3Iaq+4P3xAg2mdpvXLF5Ql31xOg5ZVDy cXyqkYSV6XzxBNruVD6+QTI= X-Google-Smtp-Source: ABdhPJxJ2l6RBR25W/7IOoPhV8coO6DkmGz63345RDkh8A1oNv0yh8M9rplKDGacVoiji7gnbxu+vA== X-Received: by 2002:a05:6a00:d5c:: with SMTP id n28mr2555266pfv.9.1643274811533; Thu, 27 Jan 2022 01:13:31 -0800 (PST) Received: from localhost.localdomain ([43.132.141.8]) by smtp.gmail.com with ESMTPSA id j11sm2046338pjf.53.2022.01.27.01.13.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 27 Jan 2022 01:13:30 -0800 (PST) From: menglong8.dong@gmail.com X-Google-Original-From: imagedong@tencent.com To: dsahern@kernel.org, kuba@kernel.org Cc: rostedt@goodmis.org, mingo@redhat.com, davem@davemloft.net, yoshfuji@linux-ipv6.org, edumazet@google.com, pablo@netfilter.org, kadlec@netfilter.org, fw@strlen.de, imagedong@tencent.com, alobakin@pm.me, pabeni@redhat.com, cong.wang@bytedance.com, talalahmad@google.com, haokexin@gmail.com, keescook@chromium.org, memxor@gmail.com, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, netfilter-devel@vger.kernel.org, coreteam@netfilter.org, mengensun@tencent.com Subject: [PATCH v2 net-next 0/8] net: use kfree_skb_reason() for ip/udp packet receive Date: Thu, 27 Jan 2022 17:13:00 +0800 Message-Id: <20220127091308.91401-1-imagedong@tencent.com> X-Mailer: git-send-email 2.27.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Menglong Dong In this series patches, kfree_skb() is replaced with kfree_skb_reason() during ipv4 and udp4 packet receiving path, and following drop reasons are introduced: SKB_DROP_REASON_SOCKET_FILTER SKB_DROP_REASON_NETFILTER_DROP SKB_DROP_REASON_OTHERHOST SKB_DROP_REASON_IP_CSUM SKB_DROP_REASON_IP_INHDR SKB_DROP_REASON_IP_RPFILTER SKB_DROP_REASON_UNICAST_IN_L2_MULTICAST SKB_DROP_REASON_XFRM_POLICY SKB_DROP_REASON_IP_NOPROTO SKB_DROP_REASON_SOCKET_RCVBUFF SKB_DROP_REASON_PROTO_MEM TCP is more complex, so I left it in the next series. I just figure out how __print_symbolic() works. It doesn't base on the array index, but searching for symbols by loop. So I'm a little afraid it's performance. Changes since v1: - add document for all drop reasons, as David advised - remove unreleated cleanup - remove EARLY_DEMUX and IP_ROUTE_INPUT drop reason - replace {UDP, TCP}_FILTER with SOCKET_FILTER Menglong Dong (8): net: socket: intrudoce SKB_DROP_REASON_SOCKET_FILTER net: skb_drop_reason: add document for drop reasons net: netfilter: use kfree_drop_reason() for NF_DROP net: ipv4: use kfree_skb_reason() in ip_rcv_core() net: ipv4: use kfree_skb_reason() in ip_rcv_finish_core() net: ipv4: use kfree_skb_reason() in ip_protocol_deliver_rcu() net: udp: use kfree_skb_reason() in udp_queue_rcv_one_skb() net: udp: use kfree_skb_reason() in __udp_queue_rcv_skb() include/linux/skbuff.h | 38 ++++++++++++++++++++++++++++++++------ include/trace/events/skb.h | 13 ++++++++++++- net/ipv4/ip_input.c | 30 ++++++++++++++++++++++-------- net/ipv4/tcp_ipv4.c | 2 +- net/ipv4/udp.c | 22 ++++++++++++++++------ net/netfilter/core.c | 3 ++- 6 files changed, 85 insertions(+), 23 deletions(-) -- 2.27.0