From patchwork Tue Oct 18 16:56:10 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hans Schultz X-Patchwork-Id: 13010826 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 25F6BC4332F for ; Tue, 18 Oct 2022 16:57:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230008AbiJRQ5B (ORCPT ); Tue, 18 Oct 2022 12:57:01 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47626 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229995AbiJRQ5A (ORCPT ); Tue, 18 Oct 2022 12:57:00 -0400 Received: from mailout-taastrup.gigahost.dk (mailout-taastrup.gigahost.dk [46.183.139.199]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D8C0BDCAC9; Tue, 18 Oct 2022 09:56:57 -0700 (PDT) Received: from mailout.gigahost.dk (mailout.gigahost.dk [89.186.169.112]) by mailout-taastrup.gigahost.dk (Postfix) with ESMTP id 6964B1884964; Tue, 18 Oct 2022 16:56:56 +0000 (UTC) Received: from smtp.gigahost.dk (smtp.gigahost.dk [89.186.169.109]) by mailout.gigahost.dk (Postfix) with ESMTP id 5C1E025001FA; Tue, 18 Oct 2022 16:56:56 +0000 (UTC) Received: by smtp.gigahost.dk (Postfix, from userid 1000) id 525D69EC000A; Tue, 18 Oct 2022 16:56:56 +0000 (UTC) X-Screener-Id: 413d8c6ce5bf6eab4824d0abaab02863e8e3f662 Received: from fujitsu.vestervang (2-104-116-184-cable.dk.customer.tdc.net [2.104.116.184]) by smtp.gigahost.dk (Postfix) with ESMTPSA id 83C469EC0007; Tue, 18 Oct 2022 16:56:55 +0000 (UTC) From: "Hans J. Schultz" To: davem@davemloft.net, kuba@kernel.org Cc: netdev@vger.kernel.org, "Hans J. Schultz" , Florian Fainelli , Andrew Lunn , Vivien Didelot , Vladimir Oltean , Eric Dumazet , Paolo Abeni , Kurt Kanzenbach , Hauke Mehrtens , Woojung Huh , UNGLinuxDriver@microchip.com, Sean Wang , Landen Chao , DENG Qingfang , Matthias Brugger , Claudiu Manoil , Alexandre Belloni , Jiri Pirko , Ivan Vecera , Roopa Prabhu , Nikolay Aleksandrov , Shuah Khan , Russell King , Christian Marangi , Daniel Borkmann , Yuwei Wang , Petr Machata , Ido Schimmel , Florent Fourcot , Hans Schultz , Joachim Wiberg , Amit Cohen , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, bridge@lists.linux-foundation.org, linux-kselftest@vger.kernel.org Subject: [PATCH v8 net-next 03/12] net: bridge: enable bridge to install locked fdb entries from drivers Date: Tue, 18 Oct 2022 18:56:10 +0200 Message-Id: <20221018165619.134535-4-netdev@kapio-technology.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20221018165619.134535-1-netdev@kapio-technology.com> References: <20221018165619.134535-1-netdev@kapio-technology.com> MIME-Version: 1.0 Organization: Westermo Network Technologies AB Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org The bridge will be able to install locked entries when receiving SWITCHDEV_FDB_ADD_TO_BRIDGE notifications from drivers. Signed-off-by: Hans J. Schultz --- include/net/switchdev.h | 1 + net/bridge/br.c | 4 ++-- net/bridge/br_fdb.c | 12 ++++++++++-- net/bridge/br_private.h | 2 +- net/bridge/br_switchdev.c | 1 + 5 files changed, 15 insertions(+), 5 deletions(-) diff --git a/include/net/switchdev.h b/include/net/switchdev.h index 7dcdc97c0bc3..ca0312b78294 100644 --- a/include/net/switchdev.h +++ b/include/net/switchdev.h @@ -248,6 +248,7 @@ struct switchdev_notifier_fdb_info { u16 vid; u8 added_by_user:1, is_local:1, + locked:1, offloaded:1; }; diff --git a/net/bridge/br.c b/net/bridge/br.c index 96e91d69a9a8..e0e2df2fa278 100644 --- a/net/bridge/br.c +++ b/net/bridge/br.c @@ -165,8 +165,8 @@ static int br_switchdev_event(struct notifier_block *unused, switch (event) { case SWITCHDEV_FDB_ADD_TO_BRIDGE: fdb_info = ptr; - err = br_fdb_external_learn_add(br, p, fdb_info->addr, - fdb_info->vid, false); + err = br_fdb_external_learn_add(br, p, fdb_info->addr, fdb_info->vid, + fdb_info->locked, false); if (err) { err = notifier_from_errno(err); break; diff --git a/net/bridge/br_fdb.c b/net/bridge/br_fdb.c index 15ead4dc6190..8d207b1416f7 100644 --- a/net/bridge/br_fdb.c +++ b/net/bridge/br_fdb.c @@ -1145,7 +1145,7 @@ static int __br_fdb_add(struct ndmsg *ndm, struct net_bridge *br, "FDB entry towards bridge must be permanent"); return -EINVAL; } - err = br_fdb_external_learn_add(br, p, addr, vid, true); + err = br_fdb_external_learn_add(br, p, addr, vid, false, true); } else { spin_lock_bh(&br->hash_lock); err = fdb_add_entry(br, p, addr, ndm, nlh_flags, vid, ext_flags, nfea_tb); @@ -1400,7 +1400,7 @@ void br_fdb_unsync_static(struct net_bridge *br, struct net_bridge_port *p) } int br_fdb_external_learn_add(struct net_bridge *br, struct net_bridge_port *p, - const unsigned char *addr, u16 vid, + const unsigned char *addr, u16 vid, bool locked, bool swdev_notify) { struct net_bridge_fdb_entry *fdb; @@ -1421,6 +1421,9 @@ int br_fdb_external_learn_add(struct net_bridge *br, struct net_bridge_port *p, if (!p) flags |= BIT(BR_FDB_LOCAL); + if (locked) + flags |= BIT(BR_FDB_LOCKED); + fdb = fdb_create(br, p, addr, vid, flags); if (!fdb) { err = -ENOMEM; @@ -1444,6 +1447,11 @@ int br_fdb_external_learn_add(struct net_bridge *br, struct net_bridge_port *p, modified = true; } + if (locked != test_bit(BR_FDB_LOCKED, &fdb->flags)) { + change_bit(BR_FDB_LOCKED, &fdb->flags); + modified = true; + } + if (swdev_notify) set_bit(BR_FDB_ADDED_BY_USER, &fdb->flags); diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h index e7a08657c7ed..3e9f4d1fbd60 100644 --- a/net/bridge/br_private.h +++ b/net/bridge/br_private.h @@ -812,7 +812,7 @@ int br_fdb_sync_static(struct net_bridge *br, struct net_bridge_port *p); void br_fdb_unsync_static(struct net_bridge *br, struct net_bridge_port *p); int br_fdb_external_learn_add(struct net_bridge *br, struct net_bridge_port *p, const unsigned char *addr, u16 vid, - bool swdev_notify); + bool locked, bool swdev_notify); int br_fdb_external_learn_del(struct net_bridge *br, struct net_bridge_port *p, const unsigned char *addr, u16 vid, bool swdev_notify); diff --git a/net/bridge/br_switchdev.c b/net/bridge/br_switchdev.c index 8f3d76c751dd..c6b938c01a74 100644 --- a/net/bridge/br_switchdev.c +++ b/net/bridge/br_switchdev.c @@ -136,6 +136,7 @@ static void br_switchdev_fdb_populate(struct net_bridge *br, item->added_by_user = test_bit(BR_FDB_ADDED_BY_USER, &fdb->flags); item->offloaded = test_bit(BR_FDB_OFFLOADED, &fdb->flags); item->is_local = test_bit(BR_FDB_LOCAL, &fdb->flags); + item->locked = test_bit(BR_FDB_LOCKED, &fdb->flags); item->info.dev = (!p || item->is_local) ? br->dev : p->dev; item->info.ctx = ctx; }