From patchwork Thu Aug 5 18:57:41 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Cong Wang X-Patchwork-Id: 12421825 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 X-Spam-Level: X-Spam-Status: No, score=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 D002FC4338F for ; Thu, 5 Aug 2021 18:58:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A933860EE9 for ; Thu, 5 Aug 2021 18:58:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241061AbhHES6S (ORCPT ); Thu, 5 Aug 2021 14:58:18 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48212 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241866AbhHES6O (ORCPT ); Thu, 5 Aug 2021 14:58:14 -0400 Received: from mail-ot1-x331.google.com (mail-ot1-x331.google.com [IPv6:2607:f8b0:4864:20::331]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A2910C06179A for ; Thu, 5 Aug 2021 11:57:58 -0700 (PDT) Received: by mail-ot1-x331.google.com with SMTP id d10-20020a9d4f0a0000b02904f51c5004e3so1814236otl.9 for ; Thu, 05 Aug 2021 11:57:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=5gXqt201hXQPzHGNu6FBADW/OpgGLxD/Q2DnkbRCYQs=; b=btL3zEcHti9xHY6bFF3zqG+rClYmeB4FIwPChMnYj17KN58DKmgVyMJoDDjHr4yhCm kwajc6plXcPB/MC1S3b6LsziMfcQfPOsyaiMbK/BjAC8rmciabHRS5CmeSFRUAYlQSDk bs3CrJm1Gom/QbDlyDpX9OCxFRDAvJhjXPvLsbhseW7GA0SvZJojfWQWfkskLfNTvP9E aysi4lovf9vbePeZYsGALx500CetTtW+4nLpWXrhgifFlTE8Ez5dSBd9WTMTBAUwdxZk 4AzCW7HTYm8xCMzOrO2PTfrYCGHkBP4Y+3fzn29WhlcTMfxtZLcTMPiw9xJ3WXSZe30/ gD/w== 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:in-reply-to :references:mime-version:content-transfer-encoding; bh=5gXqt201hXQPzHGNu6FBADW/OpgGLxD/Q2DnkbRCYQs=; b=pmEooaaxX3NTd7ULBFg+j2eMMKMAZ74KKw9JKmBO/2lb5Oa88yp+am7pUlxW3ZKYzA OjwISDSdWPKfRXbBQSuyLrnNxAQcaqxZ4E4nyKu7ttDYUmiPkr9i0X1dO6loAbQgmmCd 7G03ywW5NdwEoJ4ws0Bzi10OWtrKGn4p9+hhtEWjty+eWfdGOACARHzmnuU+6grA2snC 8lMiNkIyEQpEbsrYNWwB7WzTcrUqLBsJ1tosVS15YXvoRav7jq9qV6YCOA32V7E7gToq zMWk9ZXDP85N7edaw2YokBvgV4eaSW3Yz82IgoIl5vjPOrCXs7QZKrdarc/j7l8CyqyO o6lQ== X-Gm-Message-State: AOAM533ig3IeVOU3Ine+Uo0BKqGzuGUpZt5wVhdLFej+6QlNOoo/+P7w tMxYvjzgJ85NkE4bkjZ9ks2B+2D+Tx0= X-Google-Smtp-Source: ABdhPJxdF86KmgBFU0b2g3TfaPv9PtSts+bYnalBB9PU8Nb/s69EG/Za2ZbEqaPiR/hk7cEcZNDCSg== X-Received: by 2002:a05:6830:3113:: with SMTP id b19mr4767289ots.152.1628189877849; Thu, 05 Aug 2021 11:57:57 -0700 (PDT) Received: from unknown.attlocal.net ([2600:1700:65a0:ab60:c64b:2366:2e53:c024]) by smtp.gmail.com with ESMTPSA id r5sm358678otk.71.2021.08.05.11.57.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 05 Aug 2021 11:57:57 -0700 (PDT) From: Cong Wang To: netdev@vger.kernel.org Cc: Qitao Xu , Cong Wang Subject: [Patch net-next 04/13] udp: introduce tracepoint trace_udp_send_skb() Date: Thu, 5 Aug 2021 11:57:41 -0700 Message-Id: <20210805185750.4522-5-xiyou.wangcong@gmail.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20210805185750.4522-1-xiyou.wangcong@gmail.com> References: <20210805185750.4522-1-xiyou.wangcong@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org From: Qitao Xu Tracepoint trace_udp_send_skb() is introduced to trace skb at the exit of UDP layer on TX side. Reviewed-by: Cong Wang Signed-off-by: Qitao Xu --- include/trace/events/udp.h | 19 +++++++++++++++++++ net/ipv4/udp.c | 4 +++- 2 files changed, 22 insertions(+), 1 deletion(-) diff --git a/include/trace/events/udp.h b/include/trace/events/udp.h index 336fe272889f..7babc1a11693 100644 --- a/include/trace/events/udp.h +++ b/include/trace/events/udp.h @@ -27,6 +27,25 @@ TRACE_EVENT(udp_fail_queue_rcv_skb, TP_printk("rc=%d port=%hu", __entry->rc, __entry->lport) ); +TRACE_EVENT(udp_send_skb, + + TP_PROTO(const struct sock *sk, const struct sk_buff *skb), + + TP_ARGS(sk, skb), + + TP_STRUCT__entry( + __field(const void *, skaddr) + __field(const void *, skbaddr) + ), + + TP_fast_assign( + __entry->skaddr = sk; + __entry->skbaddr = skb; + ), + + TP_printk("skaddr=%px, skbaddr=%px", __entry->skaddr, __entry->skbaddr) +); + #endif /* _TRACE_UDP_H */ /* This part must be outside protection */ diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c index 1a742b710e54..daa618465a1d 100644 --- a/net/ipv4/udp.c +++ b/net/ipv4/udp.c @@ -970,9 +970,11 @@ static int udp_send_skb(struct sk_buff *skb, struct flowi4 *fl4, UDP_MIB_SNDBUFERRORS, is_udplite); err = 0; } - } else + } else { UDP_INC_STATS(sock_net(sk), UDP_MIB_OUTDATAGRAMS, is_udplite); + trace_udp_send_skb(sk, skb); + } return err; }