From patchwork Tue Mar 23 00:37:57 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Cong Wang X-Patchwork-Id: 408752 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=-15.8 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,USER_AGENT_GIT autolearn=unavailable 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 C0F5FC433EC for ; Tue, 23 Mar 2021 00:39:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A892E619AE for ; Tue, 23 Mar 2021 00:39:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231267AbhCWAi4 (ORCPT ); Mon, 22 Mar 2021 20:38:56 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39290 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230166AbhCWAiS (ORCPT ); Mon, 22 Mar 2021 20:38:18 -0400 Received: from mail-qv1-xf33.google.com (mail-qv1-xf33.google.com [IPv6:2607:f8b0:4864:20::f33]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1FCEDC061574; Mon, 22 Mar 2021 17:38:18 -0700 (PDT) Received: by mail-qv1-xf33.google.com with SMTP id h3so9647173qvh.8; Mon, 22 Mar 2021 17:38:18 -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=azpBQutchzCr3FplNtXl63QhozAq1NlwxEgz2eiaadY=; b=WTeos/u9ctlf+UF+ERbZ4ffmp0Z6ja9sDED3log40MO7KxDweIGvMlvFBWW58FzRwQ ExiqqrLVWUwbEbugB38tqWsYRqjRnLr60jEEeP0VbDfNg0AAWQmBf7s8JoHZ5bX7K08a E1+KyrEAYDtFUn/RuVdEymB1tC+0KflMTFV+H4hTEgKZiD2nYyObXIQaYXROi1TxekUj LbYClIkhO9HFULdCLq9dRR6oR/4L+lhX3g82OR8Xm1s5FRGjWUx9L+VYgZykzud/Qy/Q EMURF92OutO2xf/cTZncaY+yLOeAVoXZInlpZVNv6Om61kEtKxbck6gF1VeGsfEHgsHQ T7tw== 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=azpBQutchzCr3FplNtXl63QhozAq1NlwxEgz2eiaadY=; b=ai0E6c09POhp4pLtRqDENzz0cmLbHninuQfXRP8hW8kcSYaP8qfqB4pshQ8tkR31xd UEO5A2cv3hLD/ANxWeNtvmkjyj5kCRJCyVDBblLQ/FNhrqqKBtMdLqpiYjH4A21qk7ok AZh0qvjZOVXqBs9o0jpwyuwDigSbttrBnORNBW46uVClR+aEx5sPkWI2eYb1Zu1yIifD mT3klmVGxXquYzrhT/xxV7tKVChxyMyEZSD3CPcAscZs1w6JeqC1hf/vRCo4kqeRvp9S Gt4HhzKP6RQZH5CL5KtZ3ohlEHEroqFIcnldX2ujV4q5+jD5CnkPgJHz7FXsTwhdVJ7z PcaQ== X-Gm-Message-State: AOAM533OHkZIA/0bxK5Yff/vBZzsciJiui6nq50sFP/RXXEMS3M+5gQW 9ZwnTY460uKfzGo8un9zSQE4ERzv8p7tmQ== X-Google-Smtp-Source: ABdhPJw0pzXwDKHdLNCw3KFOaWBhYYf1E4yAHymf5a96Qnm0/5HK3XHpWzR5BnvXbdH7ip1lBVspNA== X-Received: by 2002:a05:6214:d47:: with SMTP id 7mr2422982qvr.48.1616459897261; Mon, 22 Mar 2021 17:38:17 -0700 (PDT) Received: from unknown.attlocal.net ([2600:1700:65a0:ab60:fda6:6522:f108:7bd8]) by smtp.gmail.com with ESMTPSA id 184sm12356403qki.97.2021.03.22.17.38.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 22 Mar 2021 17:38:16 -0700 (PDT) From: Cong Wang To: netdev@vger.kernel.org Cc: bpf@vger.kernel.org, duanxiongchun@bytedance.com, wangdongdong.6@bytedance.com, jiang.wang@bytedance.com, Cong Wang , John Fastabend , Daniel Borkmann , Lorenz Bauer , Jakub Sitnicki Subject: [Patch bpf-next v6 01/12] skmsg: lock ingress_skb when purging Date: Mon, 22 Mar 2021 17:37:57 -0700 Message-Id: <20210323003808.16074-2-xiyou.wangcong@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210323003808.16074-1-xiyou.wangcong@gmail.com> References: <20210323003808.16074-1-xiyou.wangcong@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Cong Wang Currently we purge the ingress_skb queue only when psock refcnt goes down to 0, so locking the queue is not necessary, but in order to be called during ->close, we have to lock it here. Cc: John Fastabend Cc: Daniel Borkmann Cc: Lorenz Bauer Acked-by: Jakub Sitnicki Signed-off-by: Cong Wang --- net/core/skmsg.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/core/skmsg.c b/net/core/skmsg.c index 07f54015238a..bebf84ed4e30 100644 --- a/net/core/skmsg.c +++ b/net/core/skmsg.c @@ -634,7 +634,7 @@ static void sk_psock_zap_ingress(struct sk_psock *psock) { struct sk_buff *skb; - while ((skb = __skb_dequeue(&psock->ingress_skb)) != NULL) { + while ((skb = skb_dequeue(&psock->ingress_skb)) != NULL) { skb_bpf_redirect_clear(skb); kfree_skb(skb); }