From patchwork Sat Jan 16 04:32:07 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xin Long X-Patchwork-Id: 365002 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=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 0EAC0C433E0 for ; Sat, 16 Jan 2021 04:34:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D2A0B23A5E for ; Sat, 16 Jan 2021 04:34:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729815AbhAPEdj (ORCPT ); Fri, 15 Jan 2021 23:33:39 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48072 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729785AbhAPEdi (ORCPT ); Fri, 15 Jan 2021 23:33:38 -0500 Received: from mail-pj1-x1033.google.com (mail-pj1-x1033.google.com [IPv6:2607:f8b0:4864:20::1033]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 92FE0C061796 for ; Fri, 15 Jan 2021 20:32:25 -0800 (PST) Received: by mail-pj1-x1033.google.com with SMTP id b5so6399225pjl.0 for ; Fri, 15 Jan 2021 20:32:25 -0800 (PST) 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 :in-reply-to:references; bh=Z7HSJSeBLeJa8F3YnHkBDKj2RIYYIjzsXg9wxk8bDWo=; b=gCUBCrqqH07oKDjh6D1k7eTk2+AcSwJbH/sMdHbllGOteSy/GizCJM6qTlHwJjwAeE Z4RpX4meQP3GM/stMD1YyOgtBWCw4OqWKWH0EY3KR8TfPb0dkkv4iVPXxsrA8hLBGV3w ULUPtyCkOxgCTsKz9dQ3Ced9WzMDfAumUD9aAomjCxVB/qAGZXyusmNshUN6f5yGXSW6 +LFnMPdHMtBH3eApdm4llWS5CsCYDVIiql+OPtfwPoRxAK6IrtXLviAei8TiEh0JRYDN +xa2aB9PZhILo90612aNEFZ1CK3E6K0tVIwpL8reXvnUuxn8eN2xnv5f972ULEUM+ubn D9Kg== 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:in-reply-to:references; bh=Z7HSJSeBLeJa8F3YnHkBDKj2RIYYIjzsXg9wxk8bDWo=; b=OLk8xct6GS0SB+0e93ztfU0Rp+Ge1I5LnlEMkXY6P1uoO0gYRP7gblE/rNb5dV6xde Hniln538xjxkMNaVFRvUS0TMQURwCPrNNyZ1iq5XLPE6+SNR6B1r0LXqqMWcWoJaIr8D C/HUM8B+0Ps+7Yt5wTXu6ihokj7bFdFvpaWMf3ZpHCeRvPshsFKeZXsOS/ah385ICeEq 8JxP4peNBrpxLArxWtXk+AicqFoQzydrw5BsztRGLyhIXsqGOFnsoBLprbOmGlI69aAB vTYEzJenTAsIMCUCf5myc3EcDKc6hRudjb2c4juUWe9mlXvuLvtLtKaWMxvtXkRCcDB0 DIfA== X-Gm-Message-State: AOAM533jUa26/gqLM+AHtsj5Tw82NpIhfsQvmrwiMViJ4LWaE4Ze/7vt I2MSMlt/LlecZmJL3x6+r9HQF6S1/ZcgaQ== X-Google-Smtp-Source: ABdhPJyGVQTB6S5Mf9QN+RmMzw2HefBBdSTAvSSPpua4YXtDCEGL8isqqevmx5xyECJZ3bcfcHpm2g== X-Received: by 2002:a17:902:e901:b029:db:c0d6:62cc with SMTP id k1-20020a170902e901b02900dbc0d662ccmr15998623pld.7.1610771544911; Fri, 15 Jan 2021 20:32:24 -0800 (PST) Received: from localhost ([209.132.188.80]) by smtp.gmail.com with ESMTPSA id b65sm6301268pga.54.2021.01.15.20.32.23 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Fri, 15 Jan 2021 20:32:24 -0800 (PST) From: Xin Long To: network dev Cc: davem@davemloft.net, Jakub Kicinski , pabeni@redhat.com, Willem de Bruijn , Martin Varghese Subject: [PATCHv3 net-next 1/2] udp: call udp_encap_enable for v6 sockets when enabling encap Date: Sat, 16 Jan 2021 12:32:07 +0800 Message-Id: <0ba74e791c186444af53489ebc55664462a1caf6.1610771509.git.lucien.xin@gmail.com> X-Mailer: git-send-email 2.1.0 In-Reply-To: References: In-Reply-To: References: Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org When enabling encap for a ipv6 socket without udp_encap_needed_key increased, UDP GRO won't work for v4 mapped v6 address packets as sk will be NULL in udp4_gro_receive(). This patch is to enable it by increasing udp_encap_needed_key for v6 sockets in udp_tunnel_encap_enable(), and correspondingly decrease udp_encap_needed_key in udpv6_destroy_sock(). v1->v2: - add udp_encap_disable() and export it. Signed-off-by: Xin Long --- include/net/udp.h | 1 + include/net/udp_tunnel.h | 3 +-- net/ipv4/udp.c | 6 ++++++ net/ipv6/udp.c | 4 +++- 4 files changed, 11 insertions(+), 3 deletions(-) diff --git a/include/net/udp.h b/include/net/udp.h index 877832b..1e7b6cd 100644 --- a/include/net/udp.h +++ b/include/net/udp.h @@ -467,6 +467,7 @@ void udp_init(void); DECLARE_STATIC_KEY_FALSE(udp_encap_needed_key); void udp_encap_enable(void); +void udp_encap_disable(void); #if IS_ENABLED(CONFIG_IPV6) DECLARE_STATIC_KEY_FALSE(udpv6_encap_needed_key); void udpv6_encap_enable(void); diff --git a/include/net/udp_tunnel.h b/include/net/udp_tunnel.h index 282d10e..afc7ce7 100644 --- a/include/net/udp_tunnel.h +++ b/include/net/udp_tunnel.h @@ -181,9 +181,8 @@ static inline void udp_tunnel_encap_enable(struct socket *sock) #if IS_ENABLED(CONFIG_IPV6) if (sock->sk->sk_family == PF_INET6) ipv6_stub->udpv6_encap_enable(); - else #endif - udp_encap_enable(); + udp_encap_enable(); } #define UDP_TUNNEL_NIC_MAX_TABLES 4 diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c index 7103b0a..28bfe60 100644 --- a/net/ipv4/udp.c +++ b/net/ipv4/udp.c @@ -596,6 +596,12 @@ void udp_encap_enable(void) } EXPORT_SYMBOL(udp_encap_enable); +void udp_encap_disable(void) +{ + static_branch_dec(&udp_encap_needed_key); +} +EXPORT_SYMBOL(udp_encap_disable); + /* Handler for tunnels with arbitrary destination ports: no socket lookup, go * through error handlers in encapsulations looking for a match. */ diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c index b9f3dfd..d754292 100644 --- a/net/ipv6/udp.c +++ b/net/ipv6/udp.c @@ -1608,8 +1608,10 @@ void udpv6_destroy_sock(struct sock *sk) if (encap_destroy) encap_destroy(sk); } - if (up->encap_enabled) + if (up->encap_enabled) { static_branch_dec(&udpv6_encap_needed_key); + udp_encap_disable(); + } } inet6_destroy_sock(sk);