From patchwork Thu Mar 11 00:35:43 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pablo Neira Ayuso X-Patchwork-Id: 399552 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=-16.8 required=3.0 tests=BAYES_00, 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 CD307C4332B for ; Thu, 11 Mar 2021 00:37:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9774564FD2 for ; Thu, 11 Mar 2021 00:37:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230288AbhCKAgo (ORCPT ); Wed, 10 Mar 2021 19:36:44 -0500 Received: from correo.us.es ([193.147.175.20]:50014 "EHLO mail.us.es" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229675AbhCKAgN (ORCPT ); Wed, 10 Mar 2021 19:36:13 -0500 Received: from antivirus1-rhel7.int (unknown [192.168.2.11]) by mail.us.es (Postfix) with ESMTP id B734112E834 for ; Thu, 11 Mar 2021 01:36:12 +0100 (CET) Received: from antivirus1-rhel7.int (localhost [127.0.0.1]) by antivirus1-rhel7.int (Postfix) with ESMTP id AA6F0DA791 for ; Thu, 11 Mar 2021 01:36:12 +0100 (CET) Received: by antivirus1-rhel7.int (Postfix, from userid 99) id 9F49FDA78C; Thu, 11 Mar 2021 01:36:12 +0100 (CET) Received: from antivirus1-rhel7.int (localhost [127.0.0.1]) by antivirus1-rhel7.int (Postfix) with ESMTP id 65F2FDA73D; Thu, 11 Mar 2021 01:36:10 +0100 (CET) Received: from 192.168.1.97 (192.168.1.97) by antivirus1-rhel7.int (F-Secure/fsigk_smtp/550/antivirus1-rhel7.int); Thu, 11 Mar 2021 01:36:10 +0100 (CET) X-Virus-Status: clean(F-Secure/fsigk_smtp/550/antivirus1-rhel7.int) Received: from localhost.localdomain (unknown [90.77.255.23]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: pneira@us.es) by entrada.int (Postfix) with ESMTPSA id 2F7E442DC6E3; Thu, 11 Mar 2021 01:36:10 +0100 (CET) X-SMTPAUTHUS: auth mail.us.es From: Pablo Neira Ayuso To: netfilter-devel@vger.kernel.org Cc: davem@davemloft.net, netdev@vger.kernel.org, kuba@kernel.org, Felix Fietkau Subject: [PATCH net-next 02/23] net: 8021q: resolve forwarding path for vlan devices Date: Thu, 11 Mar 2021 01:35:43 +0100 Message-Id: <20210311003604.22199-3-pablo@netfilter.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20210311003604.22199-1-pablo@netfilter.org> References: <20210311003604.22199-1-pablo@netfilter.org> MIME-Version: 1.0 X-Virus-Scanned: ClamAV using ClamSMTP Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Add .ndo_fill_forward_path for vlan devices. For instance, assuming the following topology: IP forwarding / \ eth0.100 eth0 | eth0 . . . ethX ab:cd:ef:ab:cd:ef For packets going through IP forwarding to eth0.100 whose destination MAC address is ab:cd:ef:ab:cd:ef, dev_fill_forward_path() provides the following path: eth0.100 -> eth0 Signed-off-by: Pablo Neira Ayuso --- include/linux/netdevice.h | 7 +++++++ net/8021q/vlan_dev.c | 15 +++++++++++++++ 2 files changed, 22 insertions(+) diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h index 70eb88a4adbb..d78155aba3fa 100644 --- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -833,11 +833,18 @@ typedef u16 (*select_queue_fallback_t)(struct net_device *dev, enum net_device_path_type { DEV_PATH_ETHERNET = 0, + DEV_PATH_VLAN, }; struct net_device_path { enum net_device_path_type type; const struct net_device *dev; + union { + struct { + u16 id; + __be16 proto; + } encap; + }; }; #define NET_DEVICE_PATH_STACK_MAX 5 diff --git a/net/8021q/vlan_dev.c b/net/8021q/vlan_dev.c index dc1a197792e6..1b1955a63f7f 100644 --- a/net/8021q/vlan_dev.c +++ b/net/8021q/vlan_dev.c @@ -776,6 +776,20 @@ static int vlan_dev_get_iflink(const struct net_device *dev) return real_dev->ifindex; } +static int vlan_dev_fill_forward_path(struct net_device_path_ctx *ctx, + struct net_device_path *path) +{ + struct vlan_dev_priv *vlan = vlan_dev_priv(ctx->dev); + + path->type = DEV_PATH_VLAN; + path->encap.id = vlan->vlan_id; + path->encap.proto = vlan->vlan_proto; + path->dev = ctx->dev; + ctx->dev = vlan->real_dev; + + return 0; +} + static const struct ethtool_ops vlan_ethtool_ops = { .get_link_ksettings = vlan_ethtool_get_link_ksettings, .get_drvinfo = vlan_ethtool_get_drvinfo, @@ -814,6 +828,7 @@ static const struct net_device_ops vlan_netdev_ops = { #endif .ndo_fix_features = vlan_dev_fix_features, .ndo_get_iflink = vlan_dev_get_iflink, + .ndo_fill_forward_path = vlan_dev_fill_forward_path, }; static void vlan_dev_free(struct net_device *dev)