From patchwork Tue Jun 15 02:13:34 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Cong Wang X-Patchwork-Id: 460958 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 D101EC2B9F4 for ; Tue, 15 Jun 2021 02:23:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BA198613F5 for ; Tue, 15 Jun 2021 02:23:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231639AbhFOCZd (ORCPT ); Mon, 14 Jun 2021 22:25:33 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43302 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231532AbhFOCZ1 (ORCPT ); Mon, 14 Jun 2021 22:25:27 -0400 Received: from mail-qt1-x831.google.com (mail-qt1-x831.google.com [IPv6:2607:f8b0:4864:20::831]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5ACD0C061574; Mon, 14 Jun 2021 19:23:23 -0700 (PDT) Received: by mail-qt1-x831.google.com with SMTP id g12so10165108qtb.2; Mon, 14 Jun 2021 19:23:23 -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=eN4jLDO5ZyjqYLbpt/gFWZcY5yGAo59kBcRM9OErJwo=; b=d7YB4179DjPirCANDqeGzyc6MZHJ/65nBoRHl77NvSByKmVk4xerbbil1ajiODX+/j HLWlD30eRLywnGp7u8x2Aq0XESnxAbtBDwO8VUjIozabHJgI5AvqaWxke0tm8Ig6KWUO +3knEQDx88GLh/JhV22exhNJtfpD5virR/c33i5Uwf7sVGl/T3a8zfiS+1pRSk2jC0lE W6t2yBEu8F19IKHxWWLMJiUd/tWxhv9cV1BYz8NDWuZBAomJV+J88C6gY0XT+iUQ3sWg iIlIMB7ARt1CLsn8VPZlKaGEWTryuFWtyw8hzFXmUI0cLQ6XmTzWJdX3nEYBR2azMTDk cu7w== 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=eN4jLDO5ZyjqYLbpt/gFWZcY5yGAo59kBcRM9OErJwo=; b=H4Y7yLXHtZ5zFt7uVB/p7SAaMJQNyozgm8IpoVwuWJlWJ/d6T2NTNXLxkXWyqxNqdC slnve2SCuq3Ek6xZMtIWsVOD4XGUBGkKQtMnfU1P3urroHY7pVEeWwsQoVMQHS2b1hlk qoU+GOzZ/UefiMG9qni8RpYCwVzms6+Xuq99KzFKtYYVEv7sw4TP0Vxsbwzv9gll82uQ Th0uNdc8CrPNCm24vsoBuvc4OPgY4gEU2UAJYS8zzTv5JWsj4xvUipP0CoiHpvbqEPYo i5yhbXoDjgLZOsFhSNDTSDhkUhwgz4qGrjrfWcInHjhW2GELz024KYWFgtsWQndwvizm 5ElQ== X-Gm-Message-State: AOAM532+GlwNQtG5LwN4UDX6mED9tuHnLtwWGluveLzsGPZ9sMRLMOmM p2CXHRZbWuFoLCvrLbwvT4ZnfF3m5PgcGw== X-Google-Smtp-Source: ABdhPJzYC0/49AofL9k7eso6yPXhOa80WdN6e6H0bNtvrtxbrI9xhZzOPrHUUXJQFA2jGakqsnhAYQ== X-Received: by 2002:a37:a1d5:: with SMTP id k204mr19816231qke.300.1623723235086; Mon, 14 Jun 2021 19:13:55 -0700 (PDT) Received: from unknown.attlocal.net ([2600:1700:65a0:ab60:e9a1:5f1d:df88:4f3c]) by smtp.gmail.com with ESMTPSA id t15sm10774497qtr.35.2021.06.14.19.13.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 14 Jun 2021 19:13:54 -0700 (PDT) From: Cong Wang To: netdev@vger.kernel.org Cc: bpf@vger.kernel.org, Cong Wang , John Fastabend Subject: [PATCH RESEND bpf v3 0/8] sock_map: some bug fixes and improvements Date: Mon, 14 Jun 2021 19:13:34 -0700 Message-Id: <20210615021342.7416-1-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 1%. 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 for error cases. Please check each patch description for more details. Acked-by: John Fastabend Acked-by: Jakub Sitnicki --- Resend this patchset as it is lost after John's review. v3: add another bug fix as patch 4 update patch 5 accordingly address John's review on the last patch fix a few typos in patch descriptions v2: group all patches together set max for retries of EAGAIN Cong Wang (8): 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: clear skb redirect pointer before dropping it 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 | 82 +++++++++---------- 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, 112 insertions(+), 52 deletions(-)