From patchwork Sat May 22 19:14:04 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Cong Wang X-Patchwork-Id: 446166 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=-10.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS, 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 37395C2B9F2 for ; Sat, 22 May 2021 19:14:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 156CE61183 for ; Sat, 22 May 2021 19:14:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231400AbhEVTP6 (ORCPT ); Sat, 22 May 2021 15:15:58 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55698 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231311AbhEVTPy (ORCPT ); Sat, 22 May 2021 15:15:54 -0400 Received: from mail-pf1-x435.google.com (mail-pf1-x435.google.com [IPv6:2607:f8b0:4864:20::435]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 949CFC061574; Sat, 22 May 2021 12:14:27 -0700 (PDT) Received: by mail-pf1-x435.google.com with SMTP id x18so13186511pfi.9; Sat, 22 May 2021 12:14:27 -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:mime-version :content-transfer-encoding; bh=0OXyBjG7qnUD1D3OaIyoOtN17qx/OM0QIPESYVdnBz0=; b=Ih2gDswofcH/vVBBTza0W4UKOzKPQrMQ+HF2TfP2J1LpMqei+6e9me81RstWTGDEDQ 6eatMyg8D7SID8px0ciY6sE2jmYNJpWoJTZCioiUi4ZBej9Napmk2VhiT8yFrpMYWJyL beWQ5z0FqVkGt0w8lUaN/UKYXu0oRdC/TlI8Dc0at78SnPF2sqsu9DKvRzmTw5Ywdrqn uQkW8UeVZLXbUG1SJm3on0i1TzCOZHzPKnmvO7DgO+lPmh14IbcPqvtSP8ZDR9jWGbkd Jan0hzYmf1KB+9r/KKVR0QZmfiJHE9p77Bs6Itw/TwQ4iGIFayxIp/gawpq2UrqNbsXh sL1w== 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:mime-version :content-transfer-encoding; bh=0OXyBjG7qnUD1D3OaIyoOtN17qx/OM0QIPESYVdnBz0=; b=XUsd2HQIHP9YMzj4ejAJK6RxlUE2mnN2lWS1LIrNDlrjImsLAi3HTj/CxJX3NmtRqK cOUe6euxjnedvrVBF8h36YABZE+IGSo2nSMdorAfXyGUm6zqYsK7cjyPXx3IGQExGKrx ai3nyl19Asru5b5D9q8SL2Cx1acpU1O63UCWWOqvA8LvKd2vjcX8k/uBQNMPgNZwiKn3 JJwuc6lDwwRNlWFQ1AkSBlWGU8HaPUr1CqdtfJ+HdC5WHRkegWTQP36QtPUiYPPvgZKm TiwgDTZp4MIlE23b15zEn5AtF9zmXq0JLGu1dhvqQzrv4kSSSl2xGkFygtXQcPprhfzO dfzg== X-Gm-Message-State: AOAM5325eg12kI6vcUIO/SuJKaVHE3MzQhxdkwwve4zx11d+fmNfz1kK etNtTaT8CEIzIvYbM9m929KJsyOTyKf8iA== X-Google-Smtp-Source: ABdhPJzK4u4BZ7OVudaFeT/NzV+ZEMhkcXR6I+oIChPW6lredScKurF6iDOlO3dasCGHaFE0sjBXTQ== X-Received: by 2002:a62:1d52:0:b029:2dd:ee:1439 with SMTP id d79-20020a621d520000b02902dd00ee1439mr16257939pfd.57.1621710866378; Sat, 22 May 2021 12:14:26 -0700 (PDT) Received: from unknown.attlocal.net ([2600:1700:65a0:ab60:14cd:343f:4e27:51d7]) by smtp.gmail.com with ESMTPSA id 5sm6677531pfe.32.2021.05.22.12.14.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 22 May 2021 12:14:26 -0700 (PDT) From: Cong Wang To: netdev@vger.kernel.org Cc: bpf@vger.kernel.org, Cong Wang Subject: [Patch bpf v2 0/7] sock_map: some bug fixes and improvements Date: Sat, 22 May 2021 12:14:04 -0700 Message-Id: <20210522191411.21446-1-xiyou.wangcong@gmail.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Cong Wang This patchset contains a few bug fixes and improvements for sock_map. Patch 1 improves recvmsg() accuracy for UDP, patch 2 improves UDP non-blocking read() by retrying on EAGAIN. With both of them, the failure rate of the UDP test case goes down from 10% to 0%. Patch 3 is memory leak fix I posted, no change since v1. The rest patches address similar memory leaks or improve error handling, including one increases sk_drops counter in error cases. Please check each patch description for more details. --- Cong Wang (7): skmsg: improve udp_bpf_recvmsg() accuracy selftests/bpf: Retry for EAGAIN in udp_redir_to_connected() udp: fix a memory leak in udp_read_sock() skmsg: fix a memory leak in sk_psock_verdict_apply() skmsg: teach sk_psock_verdict_apply() to return errors skmsg: pass source psock to sk_psock_skb_redirect() skmsg: increase sk->sk_drops when dropping packets include/linux/skmsg.h | 2 - net/core/skmsg.c | 80 +++++++++---------- net/ipv4/tcp_bpf.c | 24 +++++- net/ipv4/udp.c | 2 + net/ipv4/udp_bpf.c | 47 +++++++++-- .../selftests/bpf/prog_tests/sockmap_listen.c | 7 +- 6 files changed, 109 insertions(+), 53 deletions(-)