From patchwork Wed Feb 16 03:54:23 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Menglong Dong X-Patchwork-Id: 12747915 X-Patchwork-Delegate: kuba@kernel.org 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 9DD14C433FE for ; Wed, 16 Feb 2022 03:55:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S245406AbiBPD4E (ORCPT ); Tue, 15 Feb 2022 22:56:04 -0500 Received: from mxb-00190b01.gslb.pphosted.com ([23.128.96.19]:50868 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1343713AbiBPDzu (ORCPT ); Tue, 15 Feb 2022 22:55:50 -0500 Received: from mail-pj1-x1042.google.com (mail-pj1-x1042.google.com [IPv6:2607:f8b0:4864:20::1042]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7D1AEF65F5; Tue, 15 Feb 2022 19:55:39 -0800 (PST) Received: by mail-pj1-x1042.google.com with SMTP id b8so1307745pjb.4; Tue, 15 Feb 2022 19:55:39 -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:in-reply-to:references :mime-version:content-transfer-encoding; bh=EZoukMGiWXk1HvbuQEBDTM8Ki/Xg0Kqyx/8NN8gbO9E=; b=EVm+tVf2ob8Bd6hyOZxaiciBkLNRKhy/EBpSFT+cBRzIH7Ri8w6Jh7P6eZ37/+I3O9 EkF1aAtMePZh9l5I3yPqlV5jT7Wa0wH0SiD8X2W68NQS+G/yGhx4PG37DDbpif2/9LGQ 4wwpC7mmMzAWkJsJvc+jKCaqF9YI21IUG8RyHi2RQ7MGIvOWsDeZJtHrEZy+yJiFHZ0I mhY1ocLYU6tXr7jRCq0AHyagEISi42OpHnhcHuQyR8TynzbztdGrnfeKGsJeipgXQPJA a5SlmUYU9KIPByXXjChd3Nc336TJpjYIV3IJVttfUg63I0xOyxzzcvabmQ/Z2rYZIO71 1f9Q== 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:in-reply-to :references:mime-version:content-transfer-encoding; bh=EZoukMGiWXk1HvbuQEBDTM8Ki/Xg0Kqyx/8NN8gbO9E=; b=eQm0frnsuP3jJvZ8i8QFhR93XglmKcjBEl7BQlLz784psR8J5wuek9xyxVNFLbGCx1 jFawQdsk6E/zJLYKVB9Y0vxp+n+SuZXw0TYyu6DnZD+nKGAx8OCVVoORgP3HKcoiNAT3 2Nu4GeFKf84kpbNE2c6dKYbsOSZv8d5isWvV4fHTpmOOpuOMmsUWfYxNEbG8q0tMi7wI EHjsYF7h6jhpAlNcL4MfQyGM2rPZVv+hVMW7r/M16+2QEgIQvwaanL4e88tMZ8aKZflC YloYqpsmXWQikeSqmjiL7Q3EwsYVhtpCTPykTOnsRITedxVZhAxIUhm24pfEZbzGGsyu 5VKQ== X-Gm-Message-State: AOAM5301iJvmV9Vhhe4gdYrFt762TZyZoOYmxOCtQtNOBqvGhFpyM0sy YNOFRXRYh15plXatkcHJt8s= X-Google-Smtp-Source: ABdhPJyU9BV6vwbfISPw6NBlVM3EGCGhdymUXNk1IdlFwiV0htoID4GvR7obIfHk4OFOMp5UuTcJ0A== X-Received: by 2002:a17:90a:3e4e:b0:1b9:bda3:10f5 with SMTP id t14-20020a17090a3e4e00b001b9bda310f5mr744386pjm.112.1644983739080; Tue, 15 Feb 2022 19:55:39 -0800 (PST) Received: from localhost.localdomain ([203.205.141.110]) by smtp.gmail.com with ESMTPSA id nn16sm19099668pjb.2.2022.02.15.19.55.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 15 Feb 2022 19:55:38 -0800 (PST) From: menglong8.dong@gmail.com X-Google-Original-From: imagedong@tencent.com To: dsahern@kernel.org, kuba@kernel.org Cc: edumazet@google.com, davem@davemloft.net, rostedt@goodmis.org, mingo@redhat.com, yoshfuji@linux-ipv6.org, ast@kernel.org, daniel@iogearbox.net, hawk@kernel.org, john.fastabend@gmail.com, imagedong@tencent.com, talalahmad@google.com, keescook@chromium.org, ilias.apalodimas@linaro.org, alobakin@pm.me, memxor@gmail.com, atenart@kernel.org, bigeasy@linutronix.de, pabeni@redhat.com, linyunsheng@huawei.com, arnd@arndb.de, yajun.deng@linux.dev, roopa@nvidia.com, willemb@google.com, vvs@virtuozzo.com, cong.wang@bytedance.com, luiz.von.dentz@intel.com, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, bpf@vger.kernel.org, flyingpeng@tencent.com Subject: [PATCH net-next 6/9] net: tcp: use kfree_skb_reason() for tcp_v{4,6}_do_rcv() Date: Wed, 16 Feb 2022 11:54:23 +0800 Message-Id: <20220216035426.2233808-7-imagedong@tencent.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220216035426.2233808-1-imagedong@tencent.com> References: <20220216035426.2233808-1-imagedong@tencent.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org From: Menglong Dong Replace kfree_skb() used in tcp_v4_do_rcv() and tcp_v6_do_rcv() with kfree_skb_reason(). Signed-off-by: Menglong Dong --- net/ipv4/tcp_ipv4.c | 5 ++++- net/ipv6/tcp_ipv6.c | 4 +++- 2 files changed, 7 insertions(+), 2 deletions(-) diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c index 15ef1bcff84f..036b855c1b14 100644 --- a/net/ipv4/tcp_ipv4.c +++ b/net/ipv4/tcp_ipv4.c @@ -1708,6 +1708,7 @@ INDIRECT_CALLABLE_DECLARE(struct dst_entry *ipv4_dst_check(struct dst_entry *, */ int tcp_v4_do_rcv(struct sock *sk, struct sk_buff *skb) { + enum skb_drop_reason reason; struct sock *rsk; if (sk->sk_state == TCP_ESTABLISHED) { /* Fast path */ @@ -1730,6 +1731,7 @@ int tcp_v4_do_rcv(struct sock *sk, struct sk_buff *skb) return 0; } + reason = SKB_DROP_REASON_NOT_SPECIFIED; if (tcp_checksum_complete(skb)) goto csum_err; @@ -1757,7 +1759,7 @@ int tcp_v4_do_rcv(struct sock *sk, struct sk_buff *skb) reset: tcp_v4_send_reset(rsk, skb); discard: - kfree_skb(skb); + kfree_skb_reason(skb, reason); /* Be careful here. If this function gets more complicated and * gcc suffers from register pressure on the x86, sk (in %ebx) * might be destroyed here. This current version compiles correctly, @@ -1766,6 +1768,7 @@ int tcp_v4_do_rcv(struct sock *sk, struct sk_buff *skb) return 0; csum_err: + reason = SKB_DROP_REASON_TCP_CSUM; trace_tcp_bad_csum(skb); TCP_INC_STATS(sock_net(sk), TCP_MIB_CSUMERRORS); TCP_INC_STATS(sock_net(sk), TCP_MIB_INERRS); diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c index 15090fe5af90..4d4af9b15c83 100644 --- a/net/ipv6/tcp_ipv6.c +++ b/net/ipv6/tcp_ipv6.c @@ -1476,6 +1476,7 @@ int tcp_v6_do_rcv(struct sock *sk, struct sk_buff *skb) { struct ipv6_pinfo *np = tcp_inet6_sk(sk); struct sk_buff *opt_skb = NULL; + enum skb_drop_reason reason; struct tcp_sock *tp; /* Imagine: socket is IPv6. IPv4 packet arrives, @@ -1563,9 +1564,10 @@ int tcp_v6_do_rcv(struct sock *sk, struct sk_buff *skb) discard: if (opt_skb) __kfree_skb(opt_skb); - kfree_skb(skb); + kfree_skb_reason(skb, reason); return 0; csum_err: + reason = SKB_DROP_REASON_TCP_CSUM; trace_tcp_bad_csum(skb); TCP_INC_STATS(sock_net(sk), TCP_MIB_CSUMERRORS); TCP_INC_STATS(sock_net(sk), TCP_MIB_INERRS);