From patchwork Sat Aug 14 04:27:46 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jiang Wang X-Patchwork-Id: 497558 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=-16.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, 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 B0108C4320A for ; Sat, 14 Aug 2021 04:28:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 964A661038 for ; Sat, 14 Aug 2021 04:28:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232883AbhHNE2i (ORCPT ); Sat, 14 Aug 2021 00:28:38 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57438 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232766AbhHNE2g (ORCPT ); Sat, 14 Aug 2021 00:28:36 -0400 Received: from mail-pl1-x633.google.com (mail-pl1-x633.google.com [IPv6:2607:f8b0:4864:20::633]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5B6D0C0617AD for ; Fri, 13 Aug 2021 21:28:08 -0700 (PDT) Received: by mail-pl1-x633.google.com with SMTP id q2so14549585plr.11 for ; Fri, 13 Aug 2021 21:28:08 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bytedance-com.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=d6SJ/0BzbhcL/AQI/DdNhZ/xDFhfJbOcXEvb92Bi/wU=; b=qmk3PVBzAY/iEPc9SONxP6krNMjaNMuYbuj0rt4sFXcmNzKhqH8Acpy2cluEclN/Bi bqoc+4cpnTzRGT62zR7KBkrWLC0thDPTp9CylOAuifoQIzdW1h25ZZbJwEE+CBJswf1B yAoCPR0QbzMsW2vm32D1AFfc/+EVDN+f7im84P/Xcyd5cW8WYFWonL1takYMbg7G0Tft LrCjdM2wI+NbYx//BYGWtNYkW4pcUVv0Y4xTtLeqeBiGNDBCpeDvPcnpeLzhkH9XR5A0 c6hybRh0wz5TDqFd+qYeR5dCOmjPkC1OGj+ApTLRspU5DidK4p9AeVmXO4X1OEZHsWZh Vtuw== 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=d6SJ/0BzbhcL/AQI/DdNhZ/xDFhfJbOcXEvb92Bi/wU=; b=LpDG5Qk0thFJs46s6/IwpVRNQaPnkF13NfRe/PzcsvNNKQ8UL2xcjaOBoFH36WwSzW +yMkmUNfqRtaMAQzuegVHJnt2UhM+fe8P2BRy+AmAtYq2e6cHhVk3CRVuN5ZyIJiMp10 e2PLhVYsjrD3yMDVFR5XdNjxEFKywJAGTiS/HYracT42zCAbQwB4AorQe+q3tELQ7wdt wLC6TOcSoFDepeNnaAR83ouIfc6SCZcCnaDFXXrI/hFuHz/u+G1adZJAgVn5od5qASic 5q/7awDHuctYLos7xAwYVc6kMch7IitU5RH7xnuMkQdPDVchPE90alBYtxa9BK6AnTUQ nwyQ== X-Gm-Message-State: AOAM532SSsqT7jbV347eXajrj5wdFbrC8r36lTOF6sUH+uGuD6A3oo8d 3XyT3lyVVynso960R8tl/Gtepg== X-Google-Smtp-Source: ABdhPJx8mrakcQoTylEwRyECS8AgNyqu79qApoz4nSwtdQp4MeVoda2piDCjBcoGPAJYR5PvT8XC2g== X-Received: by 2002:a17:90a:ff13:: with SMTP id ce19mr5652135pjb.114.1628915287934; Fri, 13 Aug 2021 21:28:07 -0700 (PDT) Received: from ip-10-124-121-13.byted.org (ec2-54-241-92-238.us-west-1.compute.amazonaws.com. [54.241.92.238]) by smtp.gmail.com with ESMTPSA id q21sm4420492pgk.71.2021.08.13.21.28.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 13 Aug 2021 21:28:07 -0700 (PDT) From: Jiang Wang To: netdev@vger.kernel.org Cc: cong.wang@bytedance.com, duanxiongchun@bytedance.com, xieyongji@bytedance.com, chaiwen.cc@bytedance.com, "David S. Miller" , Jakub Kicinski , John Fastabend , Daniel Borkmann , Jakub Sitnicki , Lorenz Bauer , Alexei Starovoitov , Andrii Nakryiko , Martin KaFai Lau , Song Liu , Yonghong Song , KP Singh , Shuah Khan , Al Viro , Christian Brauner , Rao Shoaib , Johan Almbladh , linux-kernel@vger.kernel.org, bpf@vger.kernel.org, linux-kselftest@vger.kernel.org Subject: [PATCH bpf-next v6 1/5] af_unix: add read_sock for stream socket types Date: Sat, 14 Aug 2021 04:27:46 +0000 Message-Id: <20210814042754.3351268-2-jiang.wang@bytedance.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20210814042754.3351268-1-jiang.wang@bytedance.com> References: <20210814042754.3351268-1-jiang.wang@bytedance.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org To support sockmap for af_unix stream type, implement read_sock, which is similar to the read_sock for unix dgram sockets. Signed-off-by: Jiang Wang Reviewed-by: Cong Wang --- net/unix/af_unix.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c index 1c2224f05b51..31061304ccf2 100644 --- a/net/unix/af_unix.c +++ b/net/unix/af_unix.c @@ -678,6 +678,8 @@ static int unix_dgram_sendmsg(struct socket *, struct msghdr *, size_t); static int unix_dgram_recvmsg(struct socket *, struct msghdr *, size_t, int); static int unix_read_sock(struct sock *sk, read_descriptor_t *desc, sk_read_actor_t recv_actor); +static int unix_stream_read_sock(struct sock *sk, read_descriptor_t *desc, + sk_read_actor_t recv_actor); static int unix_dgram_connect(struct socket *, struct sockaddr *, int, int); static int unix_seqpacket_sendmsg(struct socket *, struct msghdr *, size_t); @@ -731,6 +733,7 @@ static const struct proto_ops unix_stream_ops = { .shutdown = unix_shutdown, .sendmsg = unix_stream_sendmsg, .recvmsg = unix_stream_recvmsg, + .read_sock = unix_stream_read_sock, .mmap = sock_no_mmap, .sendpage = unix_stream_sendpage, .splice_read = unix_stream_splice_read, @@ -2490,6 +2493,15 @@ static struct sk_buff *manage_oob(struct sk_buff *skb, struct sock *sk, } #endif +static int unix_stream_read_sock(struct sock *sk, read_descriptor_t *desc, + sk_read_actor_t recv_actor) +{ + if (unlikely(sk->sk_state != TCP_ESTABLISHED)) + return -ENOTCONN; + + return unix_read_sock(sk, desc, recv_actor); +} + static int unix_stream_read_generic(struct unix_stream_read_state *state, bool freezable) {