From patchwork Wed Jan 13 08:42:51 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tobias Waldekranz X-Patchwork-Id: 12016107 X-Patchwork-Delegate: kuba@kernel.org 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,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 2319BC433E0 for ; Wed, 13 Jan 2021 08:44:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CF76F23370 for ; Wed, 13 Jan 2021 08:44:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727026AbhAMIo2 (ORCPT ); Wed, 13 Jan 2021 03:44:28 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47364 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726576AbhAMIoZ (ORCPT ); Wed, 13 Jan 2021 03:44:25 -0500 Received: from mail-lf1-x131.google.com (mail-lf1-x131.google.com [IPv6:2a00:1450:4864:20::131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0E981C06179F for ; Wed, 13 Jan 2021 00:43:45 -0800 (PST) Received: by mail-lf1-x131.google.com with SMTP id o19so1596407lfo.1 for ; Wed, 13 Jan 2021 00:43:44 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=waldekranz-com.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references :organization; bh=jYsYUPMJW5/QalGVIYLB0FRD4cRJBAZJQQHBbr95zms=; b=MD3Wdf7NBqdKe+hmJ8MV5yitglBnZKccSdp1r6uiE3H/Ojy/bKynxhQiGM2AOioD3w usdi6Mbyq5VBpLTuzrCzKO929wPJPnBazKWMWg1/XsfBWpPFb0PZ7Aeo39ENJ6AGzjhV bcTwiKiqjy34yZr19yeucZ9Ihcw/HjVJBUyzyjLZhrzflKFXMRkdDwyf8FHKVBsAY+ub grvLPfxZjLN1BOcaDfJyurCzSbYQJroUEKbiIs/f+XhiNQMTuTnFZlEeHSRgX3rWd0gZ xE+LrRfUaFHDLcU9cHx8YrwsRviZIqBKuUm3zmVtozICblYybxz+avk03O7GRh2QqV3z PLZQ== 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:organization; bh=jYsYUPMJW5/QalGVIYLB0FRD4cRJBAZJQQHBbr95zms=; b=Desp1rvosh5gBXBx4TOAxsZRIYMSJjtQjgDb2WIEl13GQ2j/E4YdUwg5AfRpYBQjlI F3AR6BQUO/qj/5uvRzCeJ4Qz48YTQeqKhD33IhZXRJrU8CPF+NlLRzWdfywz00ye30XN XX9EVzgJuXP7XUNCMchkLXRcSsQQRtDdaqk/YU2Sbb8ONGxPkCzWdZfy7hDZH4HbYoxg krMh2xQB63e/O7+21ErWY6GaB05ZgL4NUAKaaP+3vmaCx7unmw99FuQwt9W/wo9ZhqXx jxgcsBlsSsYk7espzcZq1rKj3SM1kkro5nYrANhX6fAOcigdmEoopWVTIzfSOkyVR9iD ydEA== X-Gm-Message-State: AOAM531JVOnLuCgI2WDZLbkeDNtvVepYCBr1XKSO1l5kbs7x/uuW4hO7 O2dP+jxPcsiZ68/XeGQEZRXztw== X-Google-Smtp-Source: ABdhPJyz0H/jImmCQQ2QK/22BgqhL04dnBlZLHeUr6xQPja/kkcNCm6zC2TDh/nLt2wczV9xO3w/mw== X-Received: by 2002:a05:6512:314c:: with SMTP id s12mr432889lfi.100.1610527422298; Wed, 13 Jan 2021 00:43:42 -0800 (PST) Received: from veiron.westermo.com (static-193-12-47-89.cust.tele2.se. [193.12.47.89]) by smtp.gmail.com with ESMTPSA id u14sm137027lfk.108.2021.01.13.00.43.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 13 Jan 2021 00:43:41 -0800 (PST) From: Tobias Waldekranz To: davem@davemloft.net, kuba@kernel.org Cc: andrew@lunn.ch, vivien.didelot@gmail.com, f.fainelli@gmail.com, olteanv@gmail.com, j.vosburgh@gmail.com, vfalico@gmail.com, andy@greyhouse.net, netdev@vger.kernel.org Subject: [PATCH v5 net-next 1/5] net: bonding: Notify ports about their initial state Date: Wed, 13 Jan 2021 09:42:51 +0100 Message-Id: <20210113084255.22675-2-tobias@waldekranz.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210113084255.22675-1-tobias@waldekranz.com> References: <20210113084255.22675-1-tobias@waldekranz.com> Organization: Westermo Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org When creating a static bond (e.g. balance-xor), all ports will always be enabled. This is set, and the corresponding notification is sent out, before the port is linked to the bond upper. In the offloaded case, this ordering is hard to deal with. The lower will first see a notification that it can not associate with any bond. Then the bond is joined. After that point no more notifications are sent, so all ports remain disabled. This change simply sends an extra notification once the port has been linked to the upper to synchronize the initial state. Signed-off-by: Tobias Waldekranz Acked-by: Jay Vosburgh Tested-by: Vladimir Oltean --- drivers/net/bonding/bond_main.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c index 5fe5232cc3f3..ad5192ee1845 100644 --- a/drivers/net/bonding/bond_main.c +++ b/drivers/net/bonding/bond_main.c @@ -1922,6 +1922,8 @@ int bond_enslave(struct net_device *bond_dev, struct net_device *slave_dev, goto err_unregister; } + bond_lower_state_changed(new_slave); + res = bond_sysfs_slave_add(new_slave); if (res) { slave_dbg(bond_dev, slave_dev, "Error %d calling bond_sysfs_slave_add\n", res); From patchwork Wed Jan 13 08:42:52 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tobias Waldekranz X-Patchwork-Id: 12016115 X-Patchwork-Delegate: kuba@kernel.org 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,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 EDC9EC4332B for ; Wed, 13 Jan 2021 08:44:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A626E23359 for ; Wed, 13 Jan 2021 08:44:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727009AbhAMIoZ (ORCPT ); Wed, 13 Jan 2021 03:44:25 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47362 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726569AbhAMIoZ (ORCPT ); Wed, 13 Jan 2021 03:44:25 -0500 Received: from mail-lf1-x129.google.com (mail-lf1-x129.google.com [IPv6:2a00:1450:4864:20::129]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AEA7BC061795 for ; Wed, 13 Jan 2021 00:43:44 -0800 (PST) Received: by mail-lf1-x129.google.com with SMTP id m12so1555705lfo.7 for ; Wed, 13 Jan 2021 00:43:44 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=waldekranz-com.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references :organization; bh=FpmH3OQSzKdKZaCU+6So/vZiiUWEH/c2PXgnQCyuHeg=; b=HXAuv4TiBoZOsPWwfV+rA6q36YVE3O3J6vgQvaVbk1tM6IXk6Me+9yx83PKOEkyTI5 5RCyNlgDBIDBD4J7j6CzQdaZNlp/9fXqOaXzU1O2cZsnWSleczBnzmdHZRlQobTdY3HD 3XVdwnszjqwEF2onh4wCiwVqCUVAonPKnwcEfk9aBx1Xz7PpOx/3vSqbIjQaQfhBMLkK xzDlyJBwTu3p8VI4oPtHLlQUFMaHflE8/V/jWyBkRTlrFVkYiDEc+FNCQdObaoSeXGcJ OUJM9m5oRf2QdNQQ2uAyT3V0FJ4lsLCqgD3Py0JPhfJ2zkswtvNL6OeSm2Epluhq8XPx iNSA== 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:organization; bh=FpmH3OQSzKdKZaCU+6So/vZiiUWEH/c2PXgnQCyuHeg=; b=BRtzskT81jFMqdHFmqiPIyXPZqzjkENw9KH3ZtMcjBJK/KDiXfXA3ZDDBkbkoaYhzr +kwCFo3WjcxJlfViiWs8d8+G55nWtZKdNN/adCSBg8kUXTmYQjD/D8yUmKDfGfN5X6Jr oJKhHcSjsrCA6JRPYEHmpZnL9kJl0HnEpk28V0MYUi955dyq7x3zjGCtmYs6GuIy3s2z 0GVZEU4xKrcgYop6HDv4ilaZFUDyAIETBD7lllmnxkEVlnhqPI7muH2bHXfGwXAX5sr/ 3434em1Y8AbgNKGZ8jpVH0ytDulxahIgUsrAi6XBCeFp8raXseHI6Ah0PKd3Hc2D5ZqM 2Jhg== X-Gm-Message-State: AOAM5326evPDxS4lzYCFs+sDvCuLGQks27N7eRQ1EGFRhGnnmagpB08R jYqOmOZR5mpPibNS3e38KHUieawLocpwSnaW X-Google-Smtp-Source: ABdhPJzVY0OI781dEtbUL4/lp9p95VZYcrajNJC7O6x8OlDoFHjWyN3NTbqsCAqdta6+B7jf1j+6VA== X-Received: by 2002:a05:6512:368d:: with SMTP id d13mr395033lfs.414.1610527423263; Wed, 13 Jan 2021 00:43:43 -0800 (PST) Received: from veiron.westermo.com (static-193-12-47-89.cust.tele2.se. [193.12.47.89]) by smtp.gmail.com with ESMTPSA id u14sm137027lfk.108.2021.01.13.00.43.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 13 Jan 2021 00:43:42 -0800 (PST) From: Tobias Waldekranz To: davem@davemloft.net, kuba@kernel.org Cc: andrew@lunn.ch, vivien.didelot@gmail.com, f.fainelli@gmail.com, olteanv@gmail.com, j.vosburgh@gmail.com, vfalico@gmail.com, andy@greyhouse.net, netdev@vger.kernel.org Subject: [PATCH v5 net-next 2/5] net: dsa: Don't offload port attributes on standalone ports Date: Wed, 13 Jan 2021 09:42:52 +0100 Message-Id: <20210113084255.22675-3-tobias@waldekranz.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210113084255.22675-1-tobias@waldekranz.com> References: <20210113084255.22675-1-tobias@waldekranz.com> Organization: Westermo Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org In a situation where a standalone port is indirectly attached to a bridge (e.g. via a LAG) which is not offloaded, do not offload any port attributes either. The port should behave as a standard NIC. Previously, on mv88e6xxx, this meant that in the following setup: br0 / team0 / \ swp0 swp1 If vlan filtering was enabled on br0, swp0's and swp1's QMode was set to "secure". This caused all untagged packets to be dropped, as their default VID (0) was not loaded into the VTU. Signed-off-by: Tobias Waldekranz Reviewed-by: Vladimir Oltean --- net/dsa/slave.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/net/dsa/slave.c b/net/dsa/slave.c index 5a1769602e65..e53c8ca6eb66 100644 --- a/net/dsa/slave.c +++ b/net/dsa/slave.c @@ -273,6 +273,9 @@ static int dsa_slave_port_attr_set(struct net_device *dev, struct dsa_port *dp = dsa_slave_to_port(dev); int ret; + if (attr->orig_dev != dev) + return -EOPNOTSUPP; + switch (attr->id) { case SWITCHDEV_ATTR_ID_PORT_STP_STATE: ret = dsa_port_set_state(dp, attr->u.stp_state); From patchwork Wed Jan 13 08:42:53 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tobias Waldekranz X-Patchwork-Id: 12016113 X-Patchwork-Delegate: kuba@kernel.org 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,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 5593BC433E6 for ; Wed, 13 Jan 2021 08:44:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 066F523358 for ; Wed, 13 Jan 2021 08:44:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727041AbhAMIoh (ORCPT ); Wed, 13 Jan 2021 03:44:37 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47408 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725865AbhAMIog (ORCPT ); Wed, 13 Jan 2021 03:44:36 -0500 Received: from mail-lj1-x229.google.com (mail-lj1-x229.google.com [IPv6:2a00:1450:4864:20::229]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CC61BC0617A2 for ; Wed, 13 Jan 2021 00:43:45 -0800 (PST) Received: by mail-lj1-x229.google.com with SMTP id m13so1596310ljo.11 for ; Wed, 13 Jan 2021 00:43:45 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=waldekranz-com.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references :organization; bh=3hQoWGXwl9ouPepPRNu7SzxfWUk7k2Gpp6kvQZc18OQ=; b=pXnli98zhZhse1aNXCoo0DW3KdLSL8mDzGSS67ZPSjwkkWhB2LTruYbkBSqHRsjz7T 1vcRfto3SKUwE9rX2vnsGCbz40zAwX/iWEY5fGhQ3iUpcfilNgPrB2u8rlLBEPtqlx2v 0FJbrg3eQFOEAbzjQ0yb00l64piE30uWmHhlVgBBLACqlEOXX3giFmo0BM5z2g03SKJj +ya0dFCksv5UPi/RCY9rqrgg8wLBKv+0I90HUCFQ/jNBItk7u+OCozZNS9/wyA8yRWdH pNvTyj6ixEejbQ/x473a4bvMl2GsPFKBodOgPeHXTWNbxIMpogoGmrQ0imkOipbg/Vc3 wt6Q== 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:organization; bh=3hQoWGXwl9ouPepPRNu7SzxfWUk7k2Gpp6kvQZc18OQ=; b=Zy9gxfOQZSfzw7GW7polkPVb3g5kjPfenLVeIkts3euOqBIy0/g+WqujFqbrvDHl5U ic863ni3QnnpW21y8zw/HcBL+wv/xagTwj8jRkPuazAeJOYuW31WvgBOa2+FeDBukKx/ ytQ8ixEujlkG/L3mKP8W9ipsuqdGw3yJm6Wg4w1NGTKrz51x+tqZy7+StO2GkjEmEh9K oP3jIq4GvyRAmNu4HpvaVptl1QzXHCijB4tcdlNokoVw1O9cr5Af3SOkfACsVKcC2YXv mM9dUTRJOanfttWQCzyL0Tu+lcmV5mQr5Uoq+/ki66C6N2DRJLnHEAdX+8dR9I1X9MJB 3PKQ== X-Gm-Message-State: AOAM5311P6u2ig3X4XgysVr5C0SsBVKCI9FiTvWtWTQgVs5nuLidpSQ2 1U66+pxlLajrQ/Euz36115+D2Q== X-Google-Smtp-Source: ABdhPJwX3TMarOfJuBRCJHKXKSggXcoyzp98ClrwYR9EFpjuRcnycVDfwTFjtBqNLmqGB+w41K11FA== X-Received: by 2002:a2e:8844:: with SMTP id z4mr471876ljj.412.1610527424220; Wed, 13 Jan 2021 00:43:44 -0800 (PST) Received: from veiron.westermo.com (static-193-12-47-89.cust.tele2.se. [193.12.47.89]) by smtp.gmail.com with ESMTPSA id u14sm137027lfk.108.2021.01.13.00.43.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 13 Jan 2021 00:43:43 -0800 (PST) From: Tobias Waldekranz To: davem@davemloft.net, kuba@kernel.org Cc: andrew@lunn.ch, vivien.didelot@gmail.com, f.fainelli@gmail.com, olteanv@gmail.com, j.vosburgh@gmail.com, vfalico@gmail.com, andy@greyhouse.net, netdev@vger.kernel.org Subject: [PATCH v5 net-next 3/5] net: dsa: Link aggregation support Date: Wed, 13 Jan 2021 09:42:53 +0100 Message-Id: <20210113084255.22675-4-tobias@waldekranz.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210113084255.22675-1-tobias@waldekranz.com> References: <20210113084255.22675-1-tobias@waldekranz.com> Organization: Westermo Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org Monitor the following events and notify the driver when: - A DSA port joins/leaves a LAG. - A LAG, made up of DSA ports, joins/leaves a bridge. - A DSA port in a LAG is enabled/disabled (enabled meaning "distributing" in 802.3ad LACP terms). When a LAG joins a bridge, the DSA subsystem will treat that as each individual port joining the bridge. The driver may look at the port's LAG device pointer to see if it is associated with any LAG, if that is required. This is analogue to how switchdev events are replicated out to all lower devices when reaching e.g. a LAG. Drivers can optionally request that DSA maintain a linear mapping from a LAG ID to the corresponding netdev by setting ds->num_lag_ids to the desired size. In the event that the hardware is not capable of offloading a particular LAG for any reason (the typical case being use of exotic modes like broadcast), DSA will take a hands-off approach, allowing the LAG to be formed as a pure software construct. This is reported back through the extended ACK, but is otherwise transparent to the user. Signed-off-by: Tobias Waldekranz Reviewed-by: Vladimir Oltean Tested-by: Vladimir Oltean --- I tried in vain to win checkpatch's approval of the foreach macros, no matter how many parentheses I added. Looking at existing macros, this style seems to be widely accepted. Is this a known issue? include/net/dsa.h | 60 ++++++++++++++++++++++++++++++ net/dsa/dsa2.c | 93 ++++++++++++++++++++++++++++++++++++++++++++++ net/dsa/dsa_priv.h | 36 ++++++++++++++++++ net/dsa/port.c | 79 +++++++++++++++++++++++++++++++++++++++ net/dsa/slave.c | 70 ++++++++++++++++++++++++++++++---- net/dsa/switch.c | 50 +++++++++++++++++++++++++ 6 files changed, 381 insertions(+), 7 deletions(-) diff --git a/include/net/dsa.h b/include/net/dsa.h index c3485ba6c312..06e3784ec55c 100644 --- a/include/net/dsa.h +++ b/include/net/dsa.h @@ -149,8 +149,41 @@ struct dsa_switch_tree { /* List of DSA links composing the routing table */ struct list_head rtable; + + /* Maps offloaded LAG netdevs to a zero-based linear ID for + * drivers that need it. + */ + struct net_device **lags; + unsigned int lags_len; }; +#define dsa_lags_foreach_id(_id, _dst) \ + for ((_id) = 0; (_id) < (_dst)->lags_len; (_id)++) \ + if ((_dst)->lags[(_id)]) + +#define dsa_lag_foreach_port(_dp, _dst, _lag) \ + list_for_each_entry((_dp), &(_dst)->ports, list) \ + if ((_dp)->lag_dev == (_lag)) + +static inline struct net_device *dsa_lag_dev(struct dsa_switch_tree *dst, + unsigned int id) +{ + return dst->lags[id]; +} + +static inline int dsa_lag_id(struct dsa_switch_tree *dst, + struct net_device *lag) +{ + unsigned int id; + + dsa_lags_foreach_id(id, dst) { + if (dsa_lag_dev(dst, id) == lag) + return id; + } + + return -ENODEV; +} + /* TC matchall action types */ enum dsa_port_mall_action_type { DSA_PORT_MALL_MIRROR, @@ -220,6 +253,8 @@ struct dsa_port { bool devlink_port_setup; struct phylink *pl; struct phylink_config pl_config; + struct net_device *lag_dev; + bool lag_tx_enabled; struct list_head list; @@ -340,6 +375,14 @@ struct dsa_switch { */ bool mtu_enforcement_ingress; + /* Drivers that benefit from having an ID associated with each + * offloaded LAG should set this to the maximum number of + * supported IDs. DSA will then maintain a mapping of _at + * least_ these many IDs, accessible to drivers via + * dsa_lag_id(). + */ + unsigned int num_lag_ids; + size_t num_ports; }; @@ -626,6 +669,13 @@ struct dsa_switch_ops { void (*crosschip_bridge_leave)(struct dsa_switch *ds, int tree_index, int sw_index, int port, struct net_device *br); + int (*crosschip_lag_change)(struct dsa_switch *ds, int sw_index, + int port); + int (*crosschip_lag_join)(struct dsa_switch *ds, int sw_index, + int port, struct net_device *lag, + struct netdev_lag_upper_info *info); + int (*crosschip_lag_leave)(struct dsa_switch *ds, int sw_index, + int port, struct net_device *lag); /* * PTP functionality @@ -657,6 +707,16 @@ struct dsa_switch_ops { int (*port_change_mtu)(struct dsa_switch *ds, int port, int new_mtu); int (*port_max_mtu)(struct dsa_switch *ds, int port); + + /* + * LAG integration + */ + int (*port_lag_change)(struct dsa_switch *ds, int port); + int (*port_lag_join)(struct dsa_switch *ds, int port, + struct net_device *lag, + struct netdev_lag_upper_info *info); + int (*port_lag_leave)(struct dsa_switch *ds, int port, + struct net_device *lag); }; #define DSA_DEVLINK_PARAM_DRIVER(_id, _name, _type, _cmodes) \ diff --git a/net/dsa/dsa2.c b/net/dsa/dsa2.c index 01f21b0b379a..fd343466df27 100644 --- a/net/dsa/dsa2.c +++ b/net/dsa/dsa2.c @@ -21,6 +21,65 @@ static DEFINE_MUTEX(dsa2_mutex); LIST_HEAD(dsa_tree_list); +/** + * dsa_lag_map() - Map LAG netdev to a linear LAG ID + * @dst: Tree in which to record the mapping. + * @lag: Netdev that is to be mapped to an ID. + * + * dsa_lag_id/dsa_lag_dev can then be used to translate between the + * two spaces. The size of the mapping space is determined by the + * driver by setting ds->num_lag_ids. It is perfectly legal to leave + * it unset if it is not needed, in which case these functions become + * no-ops. + */ +void dsa_lag_map(struct dsa_switch_tree *dst, struct net_device *lag) +{ + unsigned int id; + + if (dsa_lag_id(dst, lag) >= 0) + /* Already mapped */ + return; + + for (id = 0; id < dst->lags_len; id++) { + if (!dsa_lag_dev(dst, id)) { + dst->lags[id] = lag; + return; + } + } + + /* No IDs left, which is OK. Some drivers do not need it. The + * ones that do, e.g. mv88e6xxx, will discover that dsa_lag_id + * returns an error for this device when joining the LAG. The + * driver can then return -EOPNOTSUPP back to DSA, which will + * fall back to a software LAG. + */ +} + +/** + * dsa_lag_unmap() - Remove a LAG ID mapping + * @dst: Tree in which the mapping is recorded. + * @lag: Netdev that was mapped. + * + * As there may be multiple users of the mapping, it is only removed + * if there are no other references to it. + */ +void dsa_lag_unmap(struct dsa_switch_tree *dst, struct net_device *lag) +{ + struct dsa_port *dp; + unsigned int id; + + dsa_lag_foreach_port(dp, dst, lag) + /* There are remaining users of this mapping */ + return; + + dsa_lags_foreach_id(id, dst) { + if (dsa_lag_dev(dst, id) == lag) { + dst->lags[id] = NULL; + break; + } + } +} + struct dsa_switch *dsa_switch_find(int tree_index, int sw_index) { struct dsa_switch_tree *dst; @@ -578,6 +637,32 @@ static void dsa_tree_teardown_master(struct dsa_switch_tree *dst) dsa_master_teardown(dp->master); } +static int dsa_tree_setup_lags(struct dsa_switch_tree *dst) +{ + unsigned int len = 0; + struct dsa_port *dp; + + list_for_each_entry(dp, &dst->ports, list) { + if (dp->ds->num_lag_ids > len) + len = dp->ds->num_lag_ids; + } + + if (!len) + return 0; + + dst->lags = kcalloc(len, sizeof(*dst->lags), GFP_KERNEL); + if (!dst->lags) + return -ENOMEM; + + dst->lags_len = len; + return 0; +} + +static void dsa_tree_teardown_lags(struct dsa_switch_tree *dst) +{ + kfree(dst->lags); +} + static int dsa_tree_setup(struct dsa_switch_tree *dst) { bool complete; @@ -605,12 +690,18 @@ static int dsa_tree_setup(struct dsa_switch_tree *dst) if (err) goto teardown_switches; + err = dsa_tree_setup_lags(dst); + if (err) + goto teardown_master; + dst->setup = true; pr_info("DSA: tree %d setup\n", dst->index); return 0; +teardown_master: + dsa_tree_teardown_master(dst); teardown_switches: dsa_tree_teardown_switches(dst); teardown_default_cpu: @@ -626,6 +717,8 @@ static void dsa_tree_teardown(struct dsa_switch_tree *dst) if (!dst->setup) return; + dsa_tree_teardown_lags(dst); + dsa_tree_teardown_master(dst); dsa_tree_teardown_switches(dst); diff --git a/net/dsa/dsa_priv.h b/net/dsa/dsa_priv.h index 89143cc049db..2ce46bb87703 100644 --- a/net/dsa/dsa_priv.h +++ b/net/dsa/dsa_priv.h @@ -20,6 +20,9 @@ enum { DSA_NOTIFIER_BRIDGE_LEAVE, DSA_NOTIFIER_FDB_ADD, DSA_NOTIFIER_FDB_DEL, + DSA_NOTIFIER_LAG_CHANGE, + DSA_NOTIFIER_LAG_JOIN, + DSA_NOTIFIER_LAG_LEAVE, DSA_NOTIFIER_MDB_ADD, DSA_NOTIFIER_MDB_DEL, DSA_NOTIFIER_VLAN_ADD, @@ -55,6 +58,15 @@ struct dsa_notifier_mdb_info { int port; }; +/* DSA_NOTIFIER_LAG_* */ +struct dsa_notifier_lag_info { + struct net_device *lag; + int sw_index; + int port; + + struct netdev_lag_upper_info *info; +}; + /* DSA_NOTIFIER_VLAN_* */ struct dsa_notifier_vlan_info { const struct switchdev_obj_port_vlan *vlan; @@ -134,6 +146,11 @@ void dsa_port_disable_rt(struct dsa_port *dp); void dsa_port_disable(struct dsa_port *dp); int dsa_port_bridge_join(struct dsa_port *dp, struct net_device *br); void dsa_port_bridge_leave(struct dsa_port *dp, struct net_device *br); +int dsa_port_lag_change(struct dsa_port *dp, + struct netdev_lag_lower_state_info *linfo); +int dsa_port_lag_join(struct dsa_port *dp, struct net_device *lag_dev, + struct netdev_lag_upper_info *uinfo); +void dsa_port_lag_leave(struct dsa_port *dp, struct net_device *lag_dev); int dsa_port_vlan_filtering(struct dsa_port *dp, bool vlan_filtering); bool dsa_port_skip_vlan_configuration(struct dsa_port *dp); int dsa_port_ageing_time(struct dsa_port *dp, clock_t ageing_clock); @@ -159,6 +176,22 @@ int dsa_port_link_register_of(struct dsa_port *dp); void dsa_port_link_unregister_of(struct dsa_port *dp); extern const struct phylink_mac_ops dsa_port_phylink_mac_ops; +static inline bool dsa_port_offloads_netdev(struct dsa_port *dp, + struct net_device *dev) +{ + /* Switchdev offloading can be configured on: */ + + if (dev == dp->slave) + /* DSA ports directly connected to a bridge. */ + return true; + + if (dp->lag_dev == dev) + /* DSA ports connected to a bridge via a LAG */ + return true; + + return false; +} + /* slave.c */ extern const struct dsa_device_ops notag_netdev_ops; void dsa_slave_mii_bus_init(struct dsa_switch *ds); @@ -248,6 +281,9 @@ int dsa_switch_register_notifier(struct dsa_switch *ds); void dsa_switch_unregister_notifier(struct dsa_switch *ds); /* dsa2.c */ +void dsa_lag_map(struct dsa_switch_tree *dst, struct net_device *lag); +void dsa_lag_unmap(struct dsa_switch_tree *dst, struct net_device *lag); + extern struct list_head dsa_tree_list; #endif diff --git a/net/dsa/port.c b/net/dsa/port.c index e59bf66c4c0d..f5b0f72ee7cd 100644 --- a/net/dsa/port.c +++ b/net/dsa/port.c @@ -191,6 +191,85 @@ void dsa_port_bridge_leave(struct dsa_port *dp, struct net_device *br) dsa_port_set_state_now(dp, BR_STATE_FORWARDING); } +int dsa_port_lag_change(struct dsa_port *dp, + struct netdev_lag_lower_state_info *linfo) +{ + struct dsa_notifier_lag_info info = { + .sw_index = dp->ds->index, + .port = dp->index, + }; + bool tx_enabled; + + if (!dp->lag_dev) + return 0; + + /* On statically configured aggregates (e.g. loadbalance + * without LACP) ports will always be tx_enabled, even if the + * link is down. Thus we require both link_up and tx_enabled + * in order to include it in the tx set. + */ + tx_enabled = linfo->link_up && linfo->tx_enabled; + + if (tx_enabled == dp->lag_tx_enabled) + return 0; + + dp->lag_tx_enabled = tx_enabled; + + return dsa_port_notify(dp, DSA_NOTIFIER_LAG_CHANGE, &info); +} + +int dsa_port_lag_join(struct dsa_port *dp, struct net_device *lag, + struct netdev_lag_upper_info *uinfo) +{ + struct dsa_notifier_lag_info info = { + .sw_index = dp->ds->index, + .port = dp->index, + .lag = lag, + .info = uinfo, + }; + int err; + + dsa_lag_map(dp->ds->dst, lag); + dp->lag_dev = lag; + + err = dsa_port_notify(dp, DSA_NOTIFIER_LAG_JOIN, &info); + if (err) { + dp->lag_dev = NULL; + dsa_lag_unmap(dp->ds->dst, lag); + } + + return err; +} + +void dsa_port_lag_leave(struct dsa_port *dp, struct net_device *lag) +{ + struct dsa_notifier_lag_info info = { + .sw_index = dp->ds->index, + .port = dp->index, + .lag = lag, + }; + int err; + + if (!dp->lag_dev) + return; + + /* Port might have been part of a LAG that in turn was + * attached to a bridge. + */ + if (dp->bridge_dev) + dsa_port_bridge_leave(dp, dp->bridge_dev); + + dp->lag_tx_enabled = false; + dp->lag_dev = NULL; + + err = dsa_port_notify(dp, DSA_NOTIFIER_LAG_LEAVE, &info); + if (err) + pr_err("DSA: failed to notify DSA_NOTIFIER_LAG_LEAVE: %d\n", + err); + + dsa_lag_unmap(dp->ds->dst, lag); +} + /* Must be called under rcu_read_lock() */ static bool dsa_port_can_apply_vlan_filtering(struct dsa_port *dp, bool vlan_filtering) diff --git a/net/dsa/slave.c b/net/dsa/slave.c index e53c8ca6eb66..c5c81cba8259 100644 --- a/net/dsa/slave.c +++ b/net/dsa/slave.c @@ -273,7 +273,7 @@ static int dsa_slave_port_attr_set(struct net_device *dev, struct dsa_port *dp = dsa_slave_to_port(dev); int ret; - if (attr->orig_dev != dev) + if (!dsa_port_offloads_netdev(dp, attr->orig_dev)) return -EOPNOTSUPP; switch (attr->id) { @@ -333,7 +333,7 @@ static int dsa_slave_vlan_add(struct net_device *dev, struct switchdev_obj_port_vlan vlan; int err; - if (obj->orig_dev != dev) + if (!dsa_port_offloads_netdev(dp, obj->orig_dev)) return -EOPNOTSUPP; if (dsa_port_skip_vlan_configuration(dp)) @@ -378,7 +378,7 @@ static int dsa_slave_port_obj_add(struct net_device *dev, switch (obj->id) { case SWITCHDEV_OBJ_ID_PORT_MDB: - if (obj->orig_dev != dev) + if (!dsa_port_offloads_netdev(dp, obj->orig_dev)) return -EOPNOTSUPP; err = dsa_port_mdb_add(dp, SWITCHDEV_OBJ_PORT_MDB(obj)); break; @@ -407,7 +407,7 @@ static int dsa_slave_vlan_del(struct net_device *dev, struct switchdev_obj_port_vlan *vlan; int err; - if (obj->orig_dev != dev) + if (!dsa_port_offloads_netdev(dp, obj->orig_dev)) return -EOPNOTSUPP; if (dsa_port_skip_vlan_configuration(dp)) @@ -435,7 +435,7 @@ static int dsa_slave_port_obj_del(struct net_device *dev, switch (obj->id) { case SWITCHDEV_OBJ_ID_PORT_MDB: - if (obj->orig_dev != dev) + if (!dsa_port_offloads_netdev(dp, obj->orig_dev)) return -EOPNOTSUPP; err = dsa_port_mdb_del(dp, SWITCHDEV_OBJ_PORT_MDB(obj)); break; @@ -1907,6 +1907,46 @@ static int dsa_slave_changeupper(struct net_device *dev, dsa_port_bridge_leave(dp, info->upper_dev); err = NOTIFY_OK; } + } else if (netif_is_lag_master(info->upper_dev)) { + if (info->linking) { + err = dsa_port_lag_join(dp, info->upper_dev, + info->upper_info); + if (err == -EOPNOTSUPP) { + NL_SET_ERR_MSG_MOD(info->info.extack, + "Offloading not supported"); + err = 0; + } + err = notifier_from_errno(err); + } else { + dsa_port_lag_leave(dp, info->upper_dev); + err = NOTIFY_OK; + } + } + + return err; +} + +static int +dsa_slave_lag_changeupper(struct net_device *dev, + struct netdev_notifier_changeupper_info *info) +{ + struct net_device *lower; + struct list_head *iter; + int err = NOTIFY_DONE; + struct dsa_port *dp; + + netdev_for_each_lower_dev(dev, lower, iter) { + if (!dsa_slave_dev_check(lower)) + continue; + + dp = dsa_slave_to_port(lower); + if (!dp->lag_dev) + /* Software LAG */ + continue; + + err = dsa_slave_changeupper(lower, info); + if (notifier_to_errno(err)) + break; } return err; @@ -2004,10 +2044,26 @@ static int dsa_slave_netdevice_event(struct notifier_block *nb, break; } case NETDEV_CHANGEUPPER: + if (dsa_slave_dev_check(dev)) + return dsa_slave_changeupper(dev, ptr); + + if (netif_is_lag_master(dev)) + return dsa_slave_lag_changeupper(dev, ptr); + + break; + case NETDEV_CHANGELOWERSTATE: { + struct netdev_notifier_changelowerstate_info *info = ptr; + struct dsa_port *dp; + int err; + if (!dsa_slave_dev_check(dev)) - return NOTIFY_DONE; + break; - return dsa_slave_changeupper(dev, ptr); + dp = dsa_slave_to_port(dev); + + err = dsa_port_lag_change(dp, info->lower_state_info); + return notifier_from_errno(err); + } } return NOTIFY_DONE; diff --git a/net/dsa/switch.c b/net/dsa/switch.c index 21d2f842d068..cc0b25f3adea 100644 --- a/net/dsa/switch.c +++ b/net/dsa/switch.c @@ -166,6 +166,47 @@ static int dsa_switch_fdb_del(struct dsa_switch *ds, return ds->ops->port_fdb_del(ds, port, info->addr, info->vid); } +static int dsa_switch_lag_change(struct dsa_switch *ds, + struct dsa_notifier_lag_info *info) +{ + if (ds->index == info->sw_index && ds->ops->port_lag_change) + return ds->ops->port_lag_change(ds, info->port); + + if (ds->index != info->sw_index && ds->ops->crosschip_lag_change) + return ds->ops->crosschip_lag_change(ds, info->sw_index, + info->port); + + return 0; +} + +static int dsa_switch_lag_join(struct dsa_switch *ds, + struct dsa_notifier_lag_info *info) +{ + if (ds->index == info->sw_index && ds->ops->port_lag_join) + return ds->ops->port_lag_join(ds, info->port, info->lag, + info->info); + + if (ds->index != info->sw_index && ds->ops->crosschip_lag_join) + return ds->ops->crosschip_lag_join(ds, info->sw_index, + info->port, info->lag, + info->info); + + return 0; +} + +static int dsa_switch_lag_leave(struct dsa_switch *ds, + struct dsa_notifier_lag_info *info) +{ + if (ds->index == info->sw_index && ds->ops->port_lag_leave) + return ds->ops->port_lag_leave(ds, info->port, info->lag); + + if (ds->index != info->sw_index && ds->ops->crosschip_lag_leave) + return ds->ops->crosschip_lag_leave(ds, info->sw_index, + info->port, info->lag); + + return 0; +} + static bool dsa_switch_mdb_match(struct dsa_switch *ds, int port, struct dsa_notifier_mdb_info *info) { @@ -278,6 +319,15 @@ static int dsa_switch_event(struct notifier_block *nb, case DSA_NOTIFIER_FDB_DEL: err = dsa_switch_fdb_del(ds, info); break; + case DSA_NOTIFIER_LAG_CHANGE: + err = dsa_switch_lag_change(ds, info); + break; + case DSA_NOTIFIER_LAG_JOIN: + err = dsa_switch_lag_join(ds, info); + break; + case DSA_NOTIFIER_LAG_LEAVE: + err = dsa_switch_lag_leave(ds, info); 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[193.12.47.89]) by smtp.gmail.com with ESMTPSA id u14sm137027lfk.108.2021.01.13.00.43.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 13 Jan 2021 00:43:44 -0800 (PST) From: Tobias Waldekranz To: davem@davemloft.net, kuba@kernel.org Cc: andrew@lunn.ch, vivien.didelot@gmail.com, f.fainelli@gmail.com, olteanv@gmail.com, j.vosburgh@gmail.com, vfalico@gmail.com, andy@greyhouse.net, netdev@vger.kernel.org Subject: [PATCH v5 net-next 4/5] net: dsa: mv88e6xxx: Link aggregation support Date: Wed, 13 Jan 2021 09:42:54 +0100 Message-Id: <20210113084255.22675-5-tobias@waldekranz.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210113084255.22675-1-tobias@waldekranz.com> References: <20210113084255.22675-1-tobias@waldekranz.com> Organization: Westermo Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org Support offloading of LAGs to hardware. LAGs may be attached to a bridge in which case VLANs, multicast groups, etc. are also offloaded as usual. Signed-off-by: Tobias Waldekranz Reviewed-by: Vladimir Oltean --- drivers/net/dsa/mv88e6xxx/chip.c | 296 +++++++++++++++++++++++++++- drivers/net/dsa/mv88e6xxx/global2.c | 8 +- drivers/net/dsa/mv88e6xxx/global2.h | 5 + drivers/net/dsa/mv88e6xxx/port.c | 21 ++ drivers/net/dsa/mv88e6xxx/port.h | 5 + 5 files changed, 330 insertions(+), 5 deletions(-) diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c index 4aa7d0a8f197..dcb1726b68cc 100644 --- a/drivers/net/dsa/mv88e6xxx/chip.c +++ b/drivers/net/dsa/mv88e6xxx/chip.c @@ -1396,15 +1396,32 @@ static int mv88e6xxx_mac_setup(struct mv88e6xxx_chip *chip) static int mv88e6xxx_pvt_map(struct mv88e6xxx_chip *chip, int dev, int port) { + struct dsa_switch_tree *dst = chip->ds->dst; + struct dsa_switch *ds; + struct dsa_port *dp; u16 pvlan = 0; if (!mv88e6xxx_has_pvt(chip)) return 0; /* Skip the local source device, which uses in-chip port VLAN */ - if (dev != chip->ds->index) + if (dev != chip->ds->index) { pvlan = mv88e6xxx_port_vlan(chip, dev, port); + ds = dsa_switch_find(dst->index, dev); + dp = ds ? dsa_to_port(ds, port) : NULL; + if (dp && dp->lag_dev) { + /* As the PVT is used to limit flooding of + * FORWARD frames, which use the LAG ID as the + * source port, we must translate dev/port to + * the special "LAG device" in the PVT, using + * the LAG ID as the port number. + */ + dev = MV88E6XXX_G2_PVT_ADRR_DEV_TRUNK; + port = dsa_lag_id(dst, dp->lag_dev); + } + } + return mv88e6xxx_g2_pvt_write(chip, dev, port, pvlan); } @@ -5364,6 +5381,271 @@ static int mv88e6xxx_port_egress_floods(struct dsa_switch *ds, int port, return err; } +static bool mv88e6xxx_lag_can_offload(struct dsa_switch *ds, + struct net_device *lag, + struct netdev_lag_upper_info *info) +{ + struct dsa_port *dp; + int id, members = 0; + + id = dsa_lag_id(ds->dst, lag); + if (id < 0 || id >= ds->num_lag_ids) + return false; + + dsa_lag_foreach_port(dp, ds->dst, lag) + /* Includes the port joining the LAG */ + members++; + + if (members > 8) + return false; + + /* We could potentially relax this to include active + * backup in the future. + */ + if (info->tx_type != NETDEV_LAG_TX_TYPE_HASH) + return false; + + /* Ideally we would also validate that the hash type matches + * the hardware. Alas, this is always set to unknown on team + * interfaces. + */ + return true; +} + +static int mv88e6xxx_lag_sync_map(struct dsa_switch *ds, struct net_device *lag) +{ + struct mv88e6xxx_chip *chip = ds->priv; + struct dsa_port *dp; + u16 map = 0; + int id; + + id = dsa_lag_id(ds->dst, lag); + + /* Build the map of all ports to distribute flows destined for + * this LAG. This can be either a local user port, or a DSA + * port if the LAG port is on a remote chip. + */ + dsa_lag_foreach_port(dp, ds->dst, lag) + map |= BIT(dsa_towards_port(ds, dp->ds->index, dp->index)); + + return mv88e6xxx_g2_trunk_mapping_write(chip, id, map); +} + +static const u8 mv88e6xxx_lag_mask_table[8][8] = { + /* Row number corresponds to the number of active members in a + * LAG. Each column states which of the eight hash buckets are + * mapped to the column:th port in the LAG. + * + * Example: In a LAG with three active ports, the second port + * ([2][1]) would be selected for traffic mapped to buckets + * 3,4,5 (0x38). + */ + { 0xff, 0, 0, 0, 0, 0, 0, 0 }, + { 0x0f, 0xf0, 0, 0, 0, 0, 0, 0 }, + { 0x07, 0x38, 0xc0, 0, 0, 0, 0, 0 }, + { 0x03, 0x0c, 0x30, 0xc0, 0, 0, 0, 0 }, + { 0x03, 0x0c, 0x30, 0x40, 0x80, 0, 0, 0 }, + { 0x03, 0x0c, 0x10, 0x20, 0x40, 0x80, 0, 0 }, + { 0x03, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0 }, + { 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80 }, +}; + +static void mv88e6xxx_lag_set_port_mask(u16 *mask, int port, + int num_tx, int nth) +{ + u8 active = 0; + int i; + + num_tx = num_tx <= 8 ? num_tx : 8; + if (nth < num_tx) + active = mv88e6xxx_lag_mask_table[num_tx - 1][nth]; + + for (i = 0; i < 8; i++) { + if (BIT(i) & active) + mask[i] |= BIT(port); + } +} + +static int mv88e6xxx_lag_sync_masks(struct dsa_switch *ds) +{ + struct mv88e6xxx_chip *chip = ds->priv; + unsigned int id, num_tx; + struct net_device *lag; + struct dsa_port *dp; + int i, err, nth; + u16 mask[8]; + u16 ivec; + + /* Assume no port is a member of any LAG. */ + ivec = BIT(mv88e6xxx_num_ports(chip)) - 1; + + /* Disable all masks for ports that _are_ members of a LAG. */ + list_for_each_entry(dp, &ds->dst->ports, list) { + if (!dp->lag_dev || dp->ds != ds) + continue; + + ivec &= ~BIT(dp->index); + } + + for (i = 0; i < 8; i++) + mask[i] = ivec; + + /* Enable the correct subset of masks for all LAG ports that + * are in the Tx set. + */ + dsa_lags_foreach_id(id, ds->dst) { + lag = dsa_lag_dev(ds->dst, id); + if (!lag) + continue; + + num_tx = 0; + dsa_lag_foreach_port(dp, ds->dst, lag) { + if (dp->lag_tx_enabled) + num_tx++; + } + + if (!num_tx) + continue; + + nth = 0; + dsa_lag_foreach_port(dp, ds->dst, lag) { + if (!dp->lag_tx_enabled) + continue; + + if (dp->ds == ds) + mv88e6xxx_lag_set_port_mask(mask, dp->index, + num_tx, nth); + + nth++; + } + } + + for (i = 0; i < 8; i++) { + err = mv88e6xxx_g2_trunk_mask_write(chip, i, true, mask[i]); + if (err) + return err; + } + + return 0; +} + +static int mv88e6xxx_lag_sync_masks_map(struct dsa_switch *ds, + struct net_device *lag) +{ + int err; + + err = mv88e6xxx_lag_sync_masks(ds); + + if (!err) + err = mv88e6xxx_lag_sync_map(ds, lag); + + return err; +} + +static int mv88e6xxx_port_lag_change(struct dsa_switch *ds, int port) +{ + struct mv88e6xxx_chip *chip = ds->priv; + int err; + + mv88e6xxx_reg_lock(chip); + err = mv88e6xxx_lag_sync_masks(ds); + mv88e6xxx_reg_unlock(chip); + return err; +} + +static int mv88e6xxx_port_lag_join(struct dsa_switch *ds, int port, + struct net_device *lag, + struct netdev_lag_upper_info *info) +{ + struct mv88e6xxx_chip *chip = ds->priv; + int err, id; + + if (!mv88e6xxx_lag_can_offload(ds, lag, info)) + return -EOPNOTSUPP; + + id = dsa_lag_id(ds->dst, lag); + + mv88e6xxx_reg_lock(chip); + + err = mv88e6xxx_port_set_trunk(chip, port, true, id); + if (err) + goto err_unlock; + + err = mv88e6xxx_lag_sync_masks_map(ds, lag); + if (err) + goto err_clear_trunk; + + mv88e6xxx_reg_unlock(chip); + return 0; + +err_clear_trunk: + mv88e6xxx_port_set_trunk(chip, port, false, 0); +err_unlock: + mv88e6xxx_reg_unlock(chip); + return err; +} + +static int mv88e6xxx_port_lag_leave(struct dsa_switch *ds, int port, + struct net_device *lag) +{ + struct mv88e6xxx_chip *chip = ds->priv; + int err_sync, err_trunk; + + mv88e6xxx_reg_lock(chip); + err_sync = mv88e6xxx_lag_sync_masks_map(ds, lag); + err_trunk = mv88e6xxx_port_set_trunk(chip, port, false, 0); + mv88e6xxx_reg_unlock(chip); + return err_sync ? : err_trunk; +} + +static int mv88e6xxx_crosschip_lag_change(struct dsa_switch *ds, int sw_index, + int port) +{ + struct mv88e6xxx_chip *chip = ds->priv; + int err; + + mv88e6xxx_reg_lock(chip); + err = mv88e6xxx_lag_sync_masks(ds); + mv88e6xxx_reg_unlock(chip); + return err; +} + +static int mv88e6xxx_crosschip_lag_join(struct dsa_switch *ds, int sw_index, + int port, struct net_device *lag, + struct netdev_lag_upper_info *info) +{ + struct mv88e6xxx_chip *chip = ds->priv; + int err; + + if (!mv88e6xxx_lag_can_offload(ds, lag, info)) + return -EOPNOTSUPP; + + mv88e6xxx_reg_lock(chip); + + err = mv88e6xxx_lag_sync_masks_map(ds, lag); + if (err) + goto unlock; + + err = mv88e6xxx_pvt_map(chip, sw_index, port); + +unlock: + mv88e6xxx_reg_unlock(chip); + return err; +} + +static int mv88e6xxx_crosschip_lag_leave(struct dsa_switch *ds, int sw_index, + int port, struct net_device *lag) +{ + struct mv88e6xxx_chip *chip = ds->priv; + int err_sync, err_pvt; + + mv88e6xxx_reg_lock(chip); + err_sync = mv88e6xxx_lag_sync_masks_map(ds, lag); + err_pvt = mv88e6xxx_pvt_map(chip, sw_index, port); + mv88e6xxx_reg_unlock(chip); + return err_sync ? : err_pvt; +} + static const struct dsa_switch_ops mv88e6xxx_switch_ops = { .get_tag_protocol = mv88e6xxx_get_tag_protocol, .setup = mv88e6xxx_setup, @@ -5416,6 +5698,12 @@ static const struct dsa_switch_ops mv88e6xxx_switch_ops = { .devlink_param_get = mv88e6xxx_devlink_param_get, .devlink_param_set = mv88e6xxx_devlink_param_set, .devlink_info_get = mv88e6xxx_devlink_info_get, + .port_lag_change = mv88e6xxx_port_lag_change, + .port_lag_join = mv88e6xxx_port_lag_join, + .port_lag_leave = mv88e6xxx_port_lag_leave, + .crosschip_lag_change = mv88e6xxx_crosschip_lag_change, + .crosschip_lag_join = mv88e6xxx_crosschip_lag_join, + .crosschip_lag_leave = mv88e6xxx_crosschip_lag_leave, }; static int mv88e6xxx_register_switch(struct mv88e6xxx_chip *chip) @@ -5435,6 +5723,12 @@ static int mv88e6xxx_register_switch(struct mv88e6xxx_chip *chip) ds->ageing_time_min = chip->info->age_time_coeff; ds->ageing_time_max = chip->info->age_time_coeff * U8_MAX; + /* Some chips support up to 32, but that requires enabling the + * 5-bit port mode, which we do not support. 640k^W16 ought to + * be enough for anyone. + */ + ds->num_lag_ids = 16; + dev_set_drvdata(dev, ds); return dsa_register_switch(ds); diff --git a/drivers/net/dsa/mv88e6xxx/global2.c b/drivers/net/dsa/mv88e6xxx/global2.c index 75b227d0f73b..da8bac8813e1 100644 --- a/drivers/net/dsa/mv88e6xxx/global2.c +++ b/drivers/net/dsa/mv88e6xxx/global2.c @@ -126,8 +126,8 @@ int mv88e6xxx_g2_device_mapping_write(struct mv88e6xxx_chip *chip, int target, /* Offset 0x07: Trunk Mask Table register */ -static int mv88e6xxx_g2_trunk_mask_write(struct mv88e6xxx_chip *chip, int num, - bool hash, u16 mask) +int mv88e6xxx_g2_trunk_mask_write(struct mv88e6xxx_chip *chip, int num, + bool hash, u16 mask) { u16 val = (num << 12) | (mask & mv88e6xxx_port_mask(chip)); @@ -140,8 +140,8 @@ static int mv88e6xxx_g2_trunk_mask_write(struct mv88e6xxx_chip *chip, int num, /* Offset 0x08: Trunk Mapping Table register */ -static int mv88e6xxx_g2_trunk_mapping_write(struct mv88e6xxx_chip *chip, int id, - u16 map) +int mv88e6xxx_g2_trunk_mapping_write(struct mv88e6xxx_chip *chip, int id, + u16 map) { const u16 port_mask = BIT(mv88e6xxx_num_ports(chip)) - 1; u16 val = (id << 11) | (map & port_mask); diff --git a/drivers/net/dsa/mv88e6xxx/global2.h b/drivers/net/dsa/mv88e6xxx/global2.h index 1f42ee656816..60febaf4da76 100644 --- a/drivers/net/dsa/mv88e6xxx/global2.h +++ b/drivers/net/dsa/mv88e6xxx/global2.h @@ -101,6 +101,7 @@ #define MV88E6XXX_G2_PVT_ADDR_OP_WRITE_PVLAN 0x3000 #define MV88E6XXX_G2_PVT_ADDR_OP_READ 0x4000 #define MV88E6XXX_G2_PVT_ADDR_PTR_MASK 0x01ff +#define MV88E6XXX_G2_PVT_ADRR_DEV_TRUNK 0x1f /* Offset 0x0C: Cross-chip Port VLAN Data Register */ #define MV88E6XXX_G2_PVT_DATA 0x0c @@ -345,6 +346,10 @@ int mv88e6352_g2_mgmt_rsvd2cpu(struct mv88e6xxx_chip *chip); int mv88e6xxx_g2_pot_clear(struct mv88e6xxx_chip *chip); +int mv88e6xxx_g2_trunk_mask_write(struct mv88e6xxx_chip *chip, int num, + bool hash, u16 mask); +int mv88e6xxx_g2_trunk_mapping_write(struct mv88e6xxx_chip *chip, int id, + u16 map); int mv88e6xxx_g2_trunk_clear(struct mv88e6xxx_chip *chip); int mv88e6xxx_g2_device_mapping_write(struct mv88e6xxx_chip *chip, int target, diff --git a/drivers/net/dsa/mv88e6xxx/port.c b/drivers/net/dsa/mv88e6xxx/port.c index 77a5fd1798cd..4b46e10a2dde 100644 --- a/drivers/net/dsa/mv88e6xxx/port.c +++ b/drivers/net/dsa/mv88e6xxx/port.c @@ -851,6 +851,27 @@ int mv88e6xxx_port_set_message_port(struct mv88e6xxx_chip *chip, int port, return mv88e6xxx_port_write(chip, port, MV88E6XXX_PORT_CTL1, val); } +int mv88e6xxx_port_set_trunk(struct mv88e6xxx_chip *chip, int port, + bool trunk, u8 id) +{ + u16 val; + int err; + + err = mv88e6xxx_port_read(chip, port, MV88E6XXX_PORT_CTL1, &val); + if (err) + return err; + + val &= ~MV88E6XXX_PORT_CTL1_TRUNK_ID_MASK; + + if (trunk) + val |= MV88E6XXX_PORT_CTL1_TRUNK_PORT | + (id << MV88E6XXX_PORT_CTL1_TRUNK_ID_SHIFT); + else + val &= ~MV88E6XXX_PORT_CTL1_TRUNK_PORT; + + return mv88e6xxx_port_write(chip, port, MV88E6XXX_PORT_CTL1, val); +} + /* Offset 0x06: Port Based VLAN Map */ int mv88e6xxx_port_set_vlan_map(struct mv88e6xxx_chip *chip, int port, u16 map) diff --git a/drivers/net/dsa/mv88e6xxx/port.h b/drivers/net/dsa/mv88e6xxx/port.h index 500e1d4896ff..a729bba050df 100644 --- a/drivers/net/dsa/mv88e6xxx/port.h +++ b/drivers/net/dsa/mv88e6xxx/port.h @@ -168,6 +168,9 @@ /* Offset 0x05: Port Control 1 */ #define MV88E6XXX_PORT_CTL1 0x05 #define MV88E6XXX_PORT_CTL1_MESSAGE_PORT 0x8000 +#define MV88E6XXX_PORT_CTL1_TRUNK_PORT 0x4000 +#define MV88E6XXX_PORT_CTL1_TRUNK_ID_MASK 0x0f00 +#define MV88E6XXX_PORT_CTL1_TRUNK_ID_SHIFT 8 #define MV88E6XXX_PORT_CTL1_FID_11_4_MASK 0x00ff /* Offset 0x06: Port Based VLAN Map */ @@ -351,6 +354,8 @@ int mv88e6351_port_set_ether_type(struct mv88e6xxx_chip *chip, int port, u16 etype); int mv88e6xxx_port_set_message_port(struct mv88e6xxx_chip *chip, int port, bool message_port); +int mv88e6xxx_port_set_trunk(struct mv88e6xxx_chip *chip, int port, + bool trunk, u8 id); int mv88e6165_port_set_jumbo_size(struct mv88e6xxx_chip *chip, int port, size_t size); int mv88e6095_port_egress_rate_limiting(struct mv88e6xxx_chip *chip, int port); From patchwork Wed Jan 13 08:42:55 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tobias Waldekranz X-Patchwork-Id: 12016109 X-Patchwork-Delegate: kuba@kernel.org 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,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 97733C433E9 for ; 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[193.12.47.89]) by smtp.gmail.com with ESMTPSA id u14sm137027lfk.108.2021.01.13.00.43.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 13 Jan 2021 00:43:45 -0800 (PST) From: Tobias Waldekranz To: davem@davemloft.net, kuba@kernel.org Cc: andrew@lunn.ch, vivien.didelot@gmail.com, f.fainelli@gmail.com, olteanv@gmail.com, j.vosburgh@gmail.com, vfalico@gmail.com, andy@greyhouse.net, netdev@vger.kernel.org Subject: [PATCH v5 net-next 5/5] net: dsa: tag_dsa: Support reception of packets from LAG devices Date: Wed, 13 Jan 2021 09:42:55 +0100 Message-Id: <20210113084255.22675-6-tobias@waldekranz.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210113084255.22675-1-tobias@waldekranz.com> References: <20210113084255.22675-1-tobias@waldekranz.com> Organization: Westermo Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org Packets ingressing on a LAG that egress on the CPU port, which are not classified as management, will have a FORWARD tag that does not contain the normal source device/port tuple. Instead the trunk bit will be set, and the port field holds the LAG id. Since the exact source port information is not available in the tag, frames are injected directly on the LAG interface and thus do never pass through any DSA port interface on ingress. Management frames (TO_CPU) are not affected and will pass through the DSA port interface as usual. Signed-off-by: Tobias Waldekranz Reviewed-by: Florian Fainelli Reviewed-by: Vladimir Oltean --- net/dsa/dsa.c | 12 +++++++++++- net/dsa/tag_dsa.c | 17 ++++++++++++++++- 2 files changed, 27 insertions(+), 2 deletions(-) diff --git a/net/dsa/dsa.c b/net/dsa/dsa.c index df75481b12ed..f4ce3c5826a0 100644 --- a/net/dsa/dsa.c +++ b/net/dsa/dsa.c @@ -219,11 +219,21 @@ static int dsa_switch_rcv(struct sk_buff *skb, struct net_device *dev, } skb = nskb; - p = netdev_priv(skb->dev); skb_push(skb, ETH_HLEN); skb->pkt_type = PACKET_HOST; skb->protocol = eth_type_trans(skb, skb->dev); + if (unlikely(!dsa_slave_dev_check(skb->dev))) { + /* Packet is to be injected directly on an upper + * device, e.g. a team/bond, so skip all DSA-port + * specific actions. + */ + netif_rx(skb); + return 0; + } + + p = netdev_priv(skb->dev); + if (unlikely(cpu_dp->ds->untag_bridge_pvid)) { nskb = dsa_untag_bridge_pvid(skb); if (!nskb) { diff --git a/net/dsa/tag_dsa.c b/net/dsa/tag_dsa.c index 112c7c6dd568..7e7b7decdf39 100644 --- a/net/dsa/tag_dsa.c +++ b/net/dsa/tag_dsa.c @@ -163,6 +163,7 @@ static struct sk_buff *dsa_rcv_ll(struct sk_buff *skb, struct net_device *dev, u8 extra) { int source_device, source_port; + bool trunk = false; enum dsa_code code; enum dsa_cmd cmd; u8 *dsa_header; @@ -174,6 +175,8 @@ static struct sk_buff *dsa_rcv_ll(struct sk_buff *skb, struct net_device *dev, switch (cmd) { case DSA_CMD_FORWARD: skb->offload_fwd_mark = 1; + + trunk = !!(dsa_header[1] & 7); break; case DSA_CMD_TO_CPU: @@ -216,7 +219,19 @@ static struct sk_buff *dsa_rcv_ll(struct sk_buff *skb, struct net_device *dev, source_device = dsa_header[0] & 0x1f; source_port = (dsa_header[1] >> 3) & 0x1f; - skb->dev = dsa_master_find_slave(dev, source_device, source_port); + if (trunk) { + struct dsa_port *cpu_dp = dev->dsa_ptr; + + /* The exact source port is not available in the tag, + * so we inject the frame directly on the upper + * team/bond. + */ + skb->dev = dsa_lag_dev(cpu_dp->dst, source_port); + } else { + skb->dev = dsa_master_find_slave(dev, source_device, + source_port); + } + if (!skb->dev) return NULL;