From patchwork Thu Oct 15 11:54:09 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Henrik Bjoernlund X-Patchwork-Id: 11839123 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=-12.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,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 4C309C43457 for ; Thu, 15 Oct 2020 12:00:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D43B7218AC for ; Thu, 15 Oct 2020 12:00:27 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=microchip.com header.i=@microchip.com header.b="D9egL6Z4" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730190AbgJOMAZ (ORCPT ); Thu, 15 Oct 2020 08:00:25 -0400 Received: from esa1.microchip.iphmx.com ([68.232.147.91]:43471 "EHLO esa1.microchip.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730005AbgJOL4I (ORCPT ); Thu, 15 Oct 2020 07:56:08 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1602762967; x=1634298967; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=AX5ILQYqJRWeHAR7oYK44Hjs5w5Q2DJ98accN2OCBmQ=; b=D9egL6Z46Ctzt+1Hj5HoCaXyPQ7M3WfGDK4dFgiDOiAR9Od1QbkQh8Hf Y10G9oln2+ZOyPBka45oSnBlqG7bR6LL31MnxsAyRWsKVmC3CXcfMU1Au LaH8OhTboXQu3E9lFiu9PIf4bnzX9O6aS9WyEHhHIPcmnkAYm/Q82cSwJ FBUfhnfKAIYe8AyvbddebBm1OLynPakAW+MQY8znQg/PAuHczjqh/C9X2 lURhiK0J5LQAAEiU3vK6IkaSepkPIZG/sQAA/y3gZFj2SZrwOAaoMow4a dRWJ5coFZFtFsPpAwbjLVzZnsgHwtA3N6Ro4eo8xn9l3q4mSlw36EHFzD Q==; IronPort-SDR: lEAeIEjPil8Rawe9KaeobYTguBzBDL25qmYNSf6FaqZzKijuYgMX1uSAhbzpfmkfm6A34l0dOa 5WACXK+6GDQLmOi3tLtzb54pes9wvypfcbuSNfTM1e1qCBTyrI8QfGqGurt9h7ITDZenBHogxL 2siHVf6dkKmvzjCA03qheMyow3Uun4Xb44wdtI3GiSOaLnKHUEQTmwfePE5Qorl7H+RakMtdDN 3QiJavCr0I72kOpVT62ff/Ul0cM7AaQ4PhUPuj6DDzGaNx5CcbITrdBUSRNYx+xWMvpRYHoddl ciQ= X-IronPort-AV: E=Sophos;i="5.77,378,1596524400"; d="scan'208";a="99627350" Received: from smtpout.microchip.com (HELO email.microchip.com) ([198.175.253.82]) by esa1.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 15 Oct 2020 04:56:07 -0700 Received: from chn-vm-ex03.mchp-main.com (10.10.85.151) by chn-vm-ex03.mchp-main.com (10.10.85.151) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1979.3; Thu, 15 Oct 2020 04:56:06 -0700 Received: from soft-test08.microsemi.net (10.10.115.15) by chn-vm-ex03.mchp-main.com (10.10.85.151) with Microsoft SMTP Server id 15.1.1979.3 via Frontend Transport; Thu, 15 Oct 2020 04:56:04 -0700 From: Henrik Bjoernlund To: , , , , , , , , , CC: Henrik Bjoernlund , Horatiu Vultur Subject: [PATCH net-next v6 01/10] net: bridge: extend the process of special frames Date: Thu, 15 Oct 2020 11:54:09 +0000 Message-ID: <20201015115418.2711454-2-henrik.bjoernlund@microchip.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20201015115418.2711454-1-henrik.bjoernlund@microchip.com> References: <20201015115418.2711454-1-henrik.bjoernlund@microchip.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org This patch extends the processing of frames in the bridge. Currently MRP frames needs special processing and the current implementation doesn't allow a nice way to process different frame types. Therefore try to improve this by adding a list that contains frame types that need special processing. This list is iterated for each input frame and if there is a match based on frame type then these functions will be called and decide what to do with the frame. It can process the frame then the bridge doesn't need to do anything or don't process so then the bridge will do normal forwarding. Signed-off-by: Henrik Bjoernlund Reviewed-by: Horatiu Vultur Acked-by: Nikolay Aleksandrov --- net/bridge/br_device.c | 1 + net/bridge/br_input.c | 33 ++++++++++++++++++++++++++++++++- net/bridge/br_mrp.c | 19 +++++++++++++++---- net/bridge/br_private.h | 19 ++++++++++++------- 4 files changed, 60 insertions(+), 12 deletions(-) diff --git a/net/bridge/br_device.c b/net/bridge/br_device.c index 6f742fee874a..15c6445fa998 100644 --- a/net/bridge/br_device.c +++ b/net/bridge/br_device.c @@ -454,6 +454,7 @@ void br_dev_setup(struct net_device *dev) spin_lock_init(&br->lock); INIT_LIST_HEAD(&br->port_list); INIT_HLIST_HEAD(&br->fdb_list); + INIT_HLIST_HEAD(&br->frame_type_list); #if IS_ENABLED(CONFIG_BRIDGE_MRP) INIT_LIST_HEAD(&br->mrp_list); #endif diff --git a/net/bridge/br_input.c b/net/bridge/br_input.c index 59a318b9f646..bece03bf83c4 100644 --- a/net/bridge/br_input.c +++ b/net/bridge/br_input.c @@ -254,6 +254,21 @@ static int nf_hook_bridge_pre(struct sk_buff *skb, struct sk_buff **pskb) return RX_HANDLER_CONSUMED; } +/* Return 0 if the frame was not processed otherwise 1 + * note: already called with rcu_read_lock + */ +static int br_process_frame_type(struct net_bridge_port *p, + struct sk_buff *skb) +{ + struct br_frame_type *tmp; + + hlist_for_each_entry_rcu(tmp, &p->br->frame_type_list, list) + if (unlikely(tmp->type == skb->protocol)) + return tmp->frame_handler(p, skb); + + return 0; +} + /* * Return NULL if skb is handled * note: already called with rcu_read_lock @@ -343,7 +358,7 @@ static rx_handler_result_t br_handle_frame(struct sk_buff **pskb) } } - if (unlikely(br_mrp_process(p, skb))) + if (unlikely(br_process_frame_type(p, skb))) return RX_HANDLER_PASS; forward: @@ -380,3 +395,19 @@ rx_handler_func_t *br_get_rx_handler(const struct net_device *dev) return br_handle_frame; } + +void br_add_frame(struct net_bridge *br, struct br_frame_type *ft) +{ + hlist_add_head_rcu(&ft->list, &br->frame_type_list); +} + +void br_del_frame(struct net_bridge *br, struct br_frame_type *ft) +{ + struct br_frame_type *tmp; + + hlist_for_each_entry(tmp, &br->frame_type_list, list) + if (ft == tmp) { + hlist_del_rcu(&ft->list); + return; + } +} diff --git a/net/bridge/br_mrp.c b/net/bridge/br_mrp.c index b36689e6e7cb..f94d72bb7c32 100644 --- a/net/bridge/br_mrp.c +++ b/net/bridge/br_mrp.c @@ -6,6 +6,13 @@ static const u8 mrp_test_dmac[ETH_ALEN] = { 0x1, 0x15, 0x4e, 0x0, 0x0, 0x1 }; static const u8 mrp_in_test_dmac[ETH_ALEN] = { 0x1, 0x15, 0x4e, 0x0, 0x0, 0x3 }; +static int br_mrp_process(struct net_bridge_port *p, struct sk_buff *skb); + +static struct br_frame_type mrp_frame_type __read_mostly = { + .type = cpu_to_be16(ETH_P_MRP), + .frame_handler = br_mrp_process, +}; + static bool br_mrp_is_ring_port(struct net_bridge_port *p_port, struct net_bridge_port *s_port, struct net_bridge_port *port) @@ -445,6 +452,9 @@ static void br_mrp_del_impl(struct net_bridge *br, struct br_mrp *mrp) list_del_rcu(&mrp->list); kfree_rcu(mrp, rcu); + + if (list_empty(&br->mrp_list)) + br_del_frame(br, &mrp_frame_type); } /* Adds a new MRP instance. @@ -493,6 +503,9 @@ int br_mrp_add(struct net_bridge *br, struct br_mrp_instance *instance) spin_unlock_bh(&br->lock); rcu_assign_pointer(mrp->s_port, p); + if (list_empty(&br->mrp_list)) + br_add_frame(br, &mrp_frame_type); + INIT_DELAYED_WORK(&mrp->test_work, br_mrp_test_work_expired); INIT_DELAYED_WORK(&mrp->in_test_work, br_mrp_in_test_work_expired); list_add_tail_rcu(&mrp->list, &br->mrp_list); @@ -1172,15 +1185,13 @@ static int br_mrp_rcv(struct net_bridge_port *p, * normal forwarding. * note: already called with rcu_read_lock */ -int br_mrp_process(struct net_bridge_port *p, struct sk_buff *skb) +static int br_mrp_process(struct net_bridge_port *p, struct sk_buff *skb) { /* If there is no MRP instance do normal forwarding */ if (likely(!(p->flags & BR_MRP_AWARE))) goto out; - if (unlikely(skb->protocol == htons(ETH_P_MRP))) - return br_mrp_rcv(p, skb, p->dev); - + return br_mrp_rcv(p, skb, p->dev); out: return 0; } diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h index 345118e35c42..2fe8b88d090e 100644 --- a/net/bridge/br_private.h +++ b/net/bridge/br_private.h @@ -383,7 +383,7 @@ enum net_bridge_opts { struct net_bridge { spinlock_t lock; spinlock_t hash_lock; - struct list_head port_list; + struct hlist_head frame_type_list; struct net_device *dev; struct pcpu_sw_netstats __percpu *stats; unsigned long options; @@ -395,6 +395,7 @@ struct net_bridge { #endif struct rhashtable fdb_hash_tbl; + struct list_head port_list; #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) union { struct rtable fake_rtable; @@ -755,6 +756,16 @@ int nbp_backup_change(struct net_bridge_port *p, struct net_device *backup_dev); int br_handle_frame_finish(struct net *net, struct sock *sk, struct sk_buff *skb); rx_handler_func_t *br_get_rx_handler(const struct net_device *dev); +struct br_frame_type { + __be16 type; + int (*frame_handler)(struct net_bridge_port *port, + struct sk_buff *skb); + struct hlist_node list; +}; + +void br_add_frame(struct net_bridge *br, struct br_frame_type *ft); +void br_del_frame(struct net_bridge *br, struct br_frame_type *ft); + static inline bool br_rx_handler_check_rcu(const struct net_device *dev) { return rcu_dereference(dev->rx_handler) == br_get_rx_handler(dev); @@ -1417,7 +1428,6 @@ extern int (*br_fdb_test_addr_hook)(struct net_device *dev, unsigned char *addr) #if IS_ENABLED(CONFIG_BRIDGE_MRP) int br_mrp_parse(struct net_bridge *br, struct net_bridge_port *p, struct nlattr *attr, int cmd, struct netlink_ext_ack *extack); -int br_mrp_process(struct net_bridge_port *p, struct sk_buff *skb); bool br_mrp_enabled(struct net_bridge *br); void br_mrp_port_del(struct net_bridge *br, struct net_bridge_port *p); int br_mrp_fill_info(struct sk_buff *skb, struct net_bridge *br); @@ -1429,11 +1439,6 @@ static inline int br_mrp_parse(struct net_bridge *br, struct net_bridge_port *p, return -EOPNOTSUPP; } -static inline int br_mrp_process(struct net_bridge_port *p, struct sk_buff *skb) -{ - return 0; -} - static inline bool br_mrp_enabled(struct net_bridge *br) { return false; From patchwork Thu Oct 15 11:54:10 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Henrik Bjoernlund X-Patchwork-Id: 11839121 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=-12.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,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 1DA78C433E7 for ; Thu, 15 Oct 2020 12:00:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C02C5212CC for ; Thu, 15 Oct 2020 12:00:10 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=microchip.com header.i=@microchip.com header.b="cQ0Dfohe" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387516AbgJOMAE (ORCPT ); Thu, 15 Oct 2020 08:00:04 -0400 Received: from esa1.microchip.iphmx.com ([68.232.147.91]:43478 "EHLO esa1.microchip.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729918AbgJOL4K (ORCPT ); Thu, 15 Oct 2020 07:56:10 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1602762970; x=1634298970; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=nPqTgibgbIoCFDYZdgCNuNWAh9nm0hqB0zY9m4kalGI=; b=cQ0DfoheH2Pin7tPzeO6OX9q+DxcYdrUo9bYrAuxPZ7EDAincs1yfQ+D JfvTm312Q9f1N5uzqdEYfdECoHGO5taQdDaEowdByBEIR6swUt6n+Ve6S b13VnmDVZv2BxIPbqP5Nw48pc3p1Po8LcZMgGjavObWcezRkJyAbn5usy qdcKjwjM2XJU5UzyaGyvbHDDEhl0EPtHrVQ8GcGKWGGyycjqDI6i4TS+g AdfGLHtJ/kko0tw0siN0opEQ8CvzjgxSqniASb3dndrHB392PDqGB+/Y+ 73ZphJoWHnqzLovdZcXf9WzRk+SzkpeUP5lwyyfEzFFaGTpH9DBwg9c0H g==; IronPort-SDR: X8pw5eX/DL7huRFWUjVnc/MP6IABFxiK3bg52PaOcHh7DRSAR7v+FaU4Dvi0i4705P/v3UuRI1 fDaDCXrSyF50c91JzdOK2pC3tnD+JUI6D0eVRIFKrSYO3VMTYjvPHyCXEwgElCRRS466Qmnxnz xSgqu1xIeVZksCRgY9IQWFhQbPn24Nj9cWa6yS9aT/Dix788mWuHzRv8p12Zqo6HgZMFrxaBzS ay6zkwfcGYyHUr8mH04hi5Csp3yJgJWctyBICXR+cnFcjvdhR+5M8wpcV98vBVUtrTsgTFT1np /YU= X-IronPort-AV: E=Sophos;i="5.77,378,1596524400"; d="scan'208";a="99627353" Received: from smtpout.microchip.com (HELO email.microchip.com) ([198.175.253.82]) by esa1.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 15 Oct 2020 04:56:09 -0700 Received: from chn-vm-ex03.mchp-main.com (10.10.85.151) by chn-vm-ex03.mchp-main.com (10.10.85.151) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1979.3; Thu, 15 Oct 2020 04:56:09 -0700 Received: from soft-test08.microsemi.net (10.10.115.15) by chn-vm-ex03.mchp-main.com (10.10.85.151) with Microsoft SMTP Server id 15.1.1979.3 via Frontend Transport; Thu, 15 Oct 2020 04:56:07 -0700 From: Henrik Bjoernlund To: , , , , , , , , , CC: Henrik Bjoernlund , Horatiu Vultur Subject: [PATCH net-next v6 02/10] bridge: cfm: Add BRIDGE_CFM to Kconfig. Date: Thu, 15 Oct 2020 11:54:10 +0000 Message-ID: <20201015115418.2711454-3-henrik.bjoernlund@microchip.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20201015115418.2711454-1-henrik.bjoernlund@microchip.com> References: <20201015115418.2711454-1-henrik.bjoernlund@microchip.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org This makes it possible to include or exclude the CFM protocol according to 802.1Q section 12.14. Signed-off-by: Henrik Bjoernlund Reviewed-by: Horatiu Vultur Acked-by: Nikolay Aleksandrov --- net/bridge/Kconfig | 11 +++++++++++ net/bridge/br_device.c | 3 +++ net/bridge/br_private.h | 3 +++ 3 files changed, 17 insertions(+) diff --git a/net/bridge/Kconfig b/net/bridge/Kconfig index 80879196560c..3c8ded7d3e84 100644 --- a/net/bridge/Kconfig +++ b/net/bridge/Kconfig @@ -73,3 +73,14 @@ config BRIDGE_MRP Say N to exclude this support and reduce the binary size. If unsure, say N. + +config BRIDGE_CFM + bool "CFM protocol" + depends on BRIDGE + help + If you say Y here, then the Ethernet bridge will be able to run CFM + protocol according to 802.1Q section 12.14 + + Say N to exclude this support and reduce the binary size. + + If unsure, say N. diff --git a/net/bridge/br_device.c b/net/bridge/br_device.c index 15c6445fa998..9b5d62744acc 100644 --- a/net/bridge/br_device.c +++ b/net/bridge/br_device.c @@ -457,6 +457,9 @@ void br_dev_setup(struct net_device *dev) INIT_HLIST_HEAD(&br->frame_type_list); #if IS_ENABLED(CONFIG_BRIDGE_MRP) INIT_LIST_HEAD(&br->mrp_list); +#endif +#if IS_ENABLED(CONFIG_BRIDGE_CFM) + INIT_HLIST_HEAD(&br->mep_list); #endif spin_lock_init(&br->hash_lock); diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h index 2fe8b88d090e..90ead48fa762 100644 --- a/net/bridge/br_private.h +++ b/net/bridge/br_private.h @@ -484,6 +484,9 @@ struct net_bridge { #if IS_ENABLED(CONFIG_BRIDGE_MRP) struct list_head mrp_list; #endif +#if IS_ENABLED(CONFIG_BRIDGE_CFM) + struct hlist_head mep_list; +#endif }; struct br_input_skb_cb { From patchwork Thu Oct 15 11:54:11 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Henrik Bjoernlund X-Patchwork-Id: 11839119 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=-12.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,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 94011C433E7 for ; Thu, 15 Oct 2020 12:00:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 170252145D for ; Thu, 15 Oct 2020 12:00:02 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=microchip.com header.i=@microchip.com header.b="jCljV91/" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730806AbgJOL77 (ORCPT ); Thu, 15 Oct 2020 07:59:59 -0400 Received: from esa5.microchip.iphmx.com ([216.71.150.166]:50676 "EHLO esa5.microchip.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730026AbgJOL4O (ORCPT ); Thu, 15 Oct 2020 07:56:14 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1602762974; x=1634298974; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=R65Ti4HQOkTqVP6ETdhIqwWLL3lTi5K1nZtuHvKEhMQ=; b=jCljV91/g9dyZXM2m7xrTzTG7qX/TIBbUwlnNkh2MsuHph6OKEClN7D7 VhbhhABYZjk9Dbn2WGrwToV6OW2EJN7zQbiRPi8MzEICFeUBRGftljmkq KLsZCWpL0tKY7a54/F19QjL3StVG5n7Rf8J9UJDE0a8bIDecR5rYt3Eec PD9FwShkfmGjRD/cTqiBeEoTzCt07ooStfFNi65cnOo74riQqu075AFHk OIkoKzO74EPj59gNyk1fsm17rFQa4sx0FiO9wYwoROD7DWvTpLIJQKDbr tMfE00JKB60VzOaYrdqJo4FJM9tK2os82+WQRSDb0R9+Td4Q65SZ2fXnE Q==; IronPort-SDR: UC/F3XKTMKmHrDRluuf2XxEbq0g6pSvk+cHoWPKqDJ5XPGiAkCk7IqcLSUliC57PXZUl1+oSss YfB3+9UlV76kW404sXKD+NvfO1rzXT2lHRkEk+ysnNDRMCF7gYuZGXLMtg5q7QSlxjqI6IsEmf itph0p0wZwfVz9jCTqx6ZIEh1RGoctVLNuQVhe/zQ4Id7TDlLZfD4/GTlPOIX38krq/8aOwQpp lW4kTTqqJfTVRMApF7dytAjpqNe/r00tPjjPXMCDHItYcOSQJd0lpHTRawE90hU9eM7fRxprV0 BKQ= X-IronPort-AV: E=Sophos;i="5.77,378,1596524400"; d="scan'208";a="94717850" Received: from smtpout.microchip.com (HELO email.microchip.com) ([198.175.253.82]) by esa5.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 15 Oct 2020 04:56:12 -0700 Received: from chn-vm-ex03.mchp-main.com (10.10.85.151) by chn-vm-ex04.mchp-main.com (10.10.85.152) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1979.3; Thu, 15 Oct 2020 04:56:12 -0700 Received: from soft-test08.microsemi.net (10.10.115.15) by chn-vm-ex03.mchp-main.com (10.10.85.151) with Microsoft SMTP Server id 15.1.1979.3 via Frontend Transport; Thu, 15 Oct 2020 04:56:09 -0700 From: Henrik Bjoernlund To: , , , , , , , , , CC: Henrik Bjoernlund , Horatiu Vultur Subject: [PATCH net-next v6 03/10] bridge: uapi: cfm: Added EtherType used by the CFM protocol. Date: Thu, 15 Oct 2020 11:54:11 +0000 Message-ID: <20201015115418.2711454-4-henrik.bjoernlund@microchip.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20201015115418.2711454-1-henrik.bjoernlund@microchip.com> References: <20201015115418.2711454-1-henrik.bjoernlund@microchip.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org This EtherType is used by all CFM protocal frames transmitted according to 802.1Q section 12.14. Signed-off-by: Henrik Bjoernlund Reviewed-by: Horatiu Vultur Acked-by: Nikolay Aleksandrov --- include/uapi/linux/if_ether.h | 1 + 1 file changed, 1 insertion(+) diff --git a/include/uapi/linux/if_ether.h b/include/uapi/linux/if_ether.h index d6de2b167448..a0b637911d3c 100644 --- a/include/uapi/linux/if_ether.h +++ b/include/uapi/linux/if_ether.h @@ -99,6 +99,7 @@ #define ETH_P_1588 0x88F7 /* IEEE 1588 Timesync */ #define ETH_P_NCSI 0x88F8 /* NCSI protocol */ #define ETH_P_PRP 0x88FB /* IEC 62439-3 PRP/HSRv0 */ +#define ETH_P_CFM 0x8902 /* Connectivity Fault Management */ #define ETH_P_FCOE 0x8906 /* Fibre Channel over Ethernet */ #define ETH_P_IBOE 0x8915 /* Infiniband over Ethernet */ #define ETH_P_TDLS 0x890D /* TDLS */ From patchwork Thu Oct 15 11:54:12 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Henrik Bjoernlund X-Patchwork-Id: 11839103 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=-12.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,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 16176C433DF for ; Thu, 15 Oct 2020 11:57:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9155D2145D for ; Thu, 15 Oct 2020 11:57:52 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=microchip.com header.i=@microchip.com header.b="j66FZB09" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730317AbgJOL5o (ORCPT ); Thu, 15 Oct 2020 07:57:44 -0400 Received: from esa2.microchip.iphmx.com ([68.232.149.84]:1146 "EHLO esa2.microchip.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730041AbgJOL4Q (ORCPT ); Thu, 15 Oct 2020 07:56:16 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1602762975; x=1634298975; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=zBu/o8vhTuuvRCB+ydcesfOgrhrsyr+6j0X5lXUDIck=; b=j66FZB09UOxrTXaOCgfNIdd+26J/Ftd4jc7v3zuETlg+DIQLC1EpPWQN QmhwUJr5eTEUjCEc7aKdLfRUf2/DiUY4zD+GodgchIG6OJA2nKXbM6ZbP c8UaEsLyBOxlyIzB0aWxPVUoVOUcMbaosqa/OQgs1jd4zJWdebozzFEm7 XqcthqUbOh+R3v+U3J61kMTgIjihBl5RDugj6mwfGWA8RMFuLzKCoVsR5 FbvvztmQdx3IVJzG1rrzMj29SPFecDnwO3BM87359Lr8YAM356qBEHxt5 bVkO6lyUJSJ2i4YL9tkzGm6e2Xf+TjZHxcmon0YMyw8ffYtGkO9+UdCeb Q==; IronPort-SDR: /aw7h7heSnT3mBTOgT5V9bnzqHWpYw86Um9Zsy8MCFDA3YMKsp8BZRk74SOvvha4VctftkCZ+J vM7h9ctGKxB3nS5lIJS2XiyX0sc+l2ZB/UpTaFiXjQM3xVUhk1dFSoYgcPmspkEAdLOfskQekT UoHUxpXTqjlJC8a9gW2KpX36Eu1UtLrwTDyjQ4UlTxBLmxJwTdlR9kstzd7dfiDDRgAVyzjIlC aRORI1iX4/HMyLMnC6USynuYM5H0JRT+ObSRDDO3E0MzQYExH5fs3XBXE4t9Wuf3VST9tKaNnk Mu0= X-IronPort-AV: E=Sophos;i="5.77,378,1596524400"; d="scan'208";a="92709647" Received: from smtpout.microchip.com (HELO email.microchip.com) ([198.175.253.82]) by esa2.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 15 Oct 2020 04:56:14 -0700 Received: from chn-vm-ex03.mchp-main.com (10.10.85.151) by chn-vm-ex03.mchp-main.com (10.10.85.151) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1979.3; Thu, 15 Oct 2020 04:56:14 -0700 Received: from soft-test08.microsemi.net (10.10.115.15) by chn-vm-ex03.mchp-main.com (10.10.85.151) with Microsoft SMTP Server id 15.1.1979.3 via Frontend Transport; Thu, 15 Oct 2020 04:56:12 -0700 From: Henrik Bjoernlund To: , , , , , , , , , CC: Henrik Bjoernlund , Horatiu Vultur Subject: [PATCH net-next v6 04/10] bridge: cfm: Kernel space implementation of CFM. MEP create/delete. Date: Thu, 15 Oct 2020 11:54:12 +0000 Message-ID: <20201015115418.2711454-5-henrik.bjoernlund@microchip.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20201015115418.2711454-1-henrik.bjoernlund@microchip.com> References: <20201015115418.2711454-1-henrik.bjoernlund@microchip.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org This is the first commit of the implementation of the CFM protocol according to 802.1Q section 12.14. It contains MEP instance create, delete and configuration. Connectivity Fault Management (CFM) comprises capabilities for detecting, verifying, and isolating connectivity failures in Virtual Bridged Networks. These capabilities can be used in networks operated by multiple independent organizations, each with restricted management access to each others equipment. CFM functions are partitioned as follows: - Path discovery - Fault detection - Fault verification and isolation - Fault notification - Fault recovery Interface consists of these functions: br_cfm_mep_create() br_cfm_mep_delete() br_cfm_mep_config_set() br_cfm_cc_config_set() br_cfm_cc_peer_mep_add() br_cfm_cc_peer_mep_remove() A MEP instance is created by br_cfm_mep_create() -It is the Maintenance association End Point described in 802.1Q section 19.2. -It is created on a specific level (1-7) and is assuring that no CFM frames are passing through this MEP on lower levels. -It initiates and validates CFM frames on its level. -It can only exist on a port that is related to a bridge. -Attributes given cannot be changed until the instance is deleted. A MEP instance can be deleted by br_cfm_mep_delete(). A created MEP instance has attributes that can be configured by br_cfm_mep_config_set(). A MEP Continuity Check feature can be configured by br_cfm_cc_config_set() The Continuity Check Receiver state machine can be enabled and disabled. According to 802.1Q section 19.2.8 A MEP can have Peer MEPs added and removed by br_cfm_cc_peer_mep_add() and br_cfm_cc_peer_mep_remove() The Continuity Check feature can maintain connectivity status on each added Peer MEP. Signed-off-by: Henrik Bjoernlund Reviewed-by: Horatiu Vultur Acked-by: Nikolay Aleksandrov --- include/uapi/linux/cfm_bridge.h | 23 +++ net/bridge/Makefile | 2 + net/bridge/br_cfm.c | 278 ++++++++++++++++++++++++++++++++ net/bridge/br_if.c | 1 + net/bridge/br_private.h | 10 ++ net/bridge/br_private_cfm.h | 61 +++++++ 6 files changed, 375 insertions(+) create mode 100644 include/uapi/linux/cfm_bridge.h create mode 100644 net/bridge/br_cfm.c create mode 100644 net/bridge/br_private_cfm.h diff --git a/include/uapi/linux/cfm_bridge.h b/include/uapi/linux/cfm_bridge.h new file mode 100644 index 000000000000..a262a8c0e085 --- /dev/null +++ b/include/uapi/linux/cfm_bridge.h @@ -0,0 +1,23 @@ +/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ + +#ifndef _UAPI_LINUX_CFM_BRIDGE_H_ +#define _UAPI_LINUX_CFM_BRIDGE_H_ + +#include +#include + +#define CFM_MAID_LENGTH 48 + +/* MEP domain */ +enum br_cfm_domain { + BR_CFM_PORT, + BR_CFM_VLAN, +}; + +/* MEP direction */ +enum br_cfm_mep_direction { + BR_CFM_MEP_DIRECTION_DOWN, + BR_CFM_MEP_DIRECTION_UP, +}; + +#endif diff --git a/net/bridge/Makefile b/net/bridge/Makefile index ccb394236fbd..ddc0a9192348 100644 --- a/net/bridge/Makefile +++ b/net/bridge/Makefile @@ -27,3 +27,5 @@ bridge-$(CONFIG_NET_SWITCHDEV) += br_switchdev.o obj-$(CONFIG_NETFILTER) += netfilter/ bridge-$(CONFIG_BRIDGE_MRP) += br_mrp_switchdev.o br_mrp.o br_mrp_netlink.o + +bridge-$(CONFIG_BRIDGE_CFM) += br_cfm.o diff --git a/net/bridge/br_cfm.c b/net/bridge/br_cfm.c new file mode 100644 index 000000000000..d171f69a7f30 --- /dev/null +++ b/net/bridge/br_cfm.c @@ -0,0 +1,278 @@ +// SPDX-License-Identifier: GPL-2.0-or-later + +#include +#include +#include "br_private_cfm.h" + +static struct br_cfm_mep *br_mep_find(struct net_bridge *br, u32 instance) +{ + struct br_cfm_mep *mep; + + hlist_for_each_entry(mep, &br->mep_list, head) + if (mep->instance == instance) + return mep; + + return NULL; +} + +static struct br_cfm_mep *br_mep_find_ifindex(struct net_bridge *br, + u32 ifindex) +{ + struct br_cfm_mep *mep; + + hlist_for_each_entry_rcu(mep, &br->mep_list, head, + lockdep_rtnl_is_held()) + if (mep->create.ifindex == ifindex) + return mep; + + return NULL; +} + +static struct br_cfm_peer_mep *br_peer_mep_find(struct br_cfm_mep *mep, + u32 mepid) +{ + struct br_cfm_peer_mep *peer_mep; + + hlist_for_each_entry_rcu(peer_mep, &mep->peer_mep_list, head, + lockdep_rtnl_is_held()) + if (peer_mep->mepid == mepid) + return peer_mep; + + return NULL; +} + +static struct net_bridge_port *br_mep_get_port(struct net_bridge *br, + u32 ifindex) +{ + struct net_bridge_port *port; + + list_for_each_entry(port, &br->port_list, list) + if (port->dev->ifindex == ifindex) + return port; + + return NULL; +} + +int br_cfm_mep_create(struct net_bridge *br, + const u32 instance, + struct br_cfm_mep_create *const create, + struct netlink_ext_ack *extack) +{ + struct net_bridge_port *p; + struct br_cfm_mep *mep; + + ASSERT_RTNL(); + + if (create->domain == BR_CFM_VLAN) { + NL_SET_ERR_MSG_MOD(extack, + "VLAN domain not supported"); + return -EINVAL; + } + if (create->domain != BR_CFM_PORT) { + NL_SET_ERR_MSG_MOD(extack, + "Invalid domain value"); + return -EINVAL; + } + if (create->direction == BR_CFM_MEP_DIRECTION_UP) { + NL_SET_ERR_MSG_MOD(extack, + "Up-MEP not supported"); + return -EINVAL; + } + if (create->direction != BR_CFM_MEP_DIRECTION_DOWN) { + NL_SET_ERR_MSG_MOD(extack, + "Invalid direction value"); + return -EINVAL; + } + p = br_mep_get_port(br, create->ifindex); + if (!p) { + NL_SET_ERR_MSG_MOD(extack, + "Port is not related to bridge"); + return -EINVAL; + } + mep = br_mep_find(br, instance); + if (mep) { + NL_SET_ERR_MSG_MOD(extack, + "MEP instance already exists"); + return -EEXIST; + } + + /* In PORT domain only one instance can be created per port */ + if (create->domain == BR_CFM_PORT) { + mep = br_mep_find_ifindex(br, create->ifindex); + if (mep) { + NL_SET_ERR_MSG_MOD(extack, + "Only one Port MEP on a port allowed"); + return -EINVAL; + } + } + + mep = kzalloc(sizeof(*mep), GFP_KERNEL); + if (!mep) + return -ENOMEM; + + mep->create = *create; + mep->instance = instance; + rcu_assign_pointer(mep->b_port, p); + + INIT_HLIST_HEAD(&mep->peer_mep_list); + + hlist_add_tail_rcu(&mep->head, &br->mep_list); + + return 0; +} + +static void mep_delete_implementation(struct net_bridge *br, + struct br_cfm_mep *mep) +{ + struct br_cfm_peer_mep *peer_mep; + struct hlist_node *n_store; + + ASSERT_RTNL(); + + /* Empty and free peer MEP list */ + hlist_for_each_entry_safe(peer_mep, n_store, &mep->peer_mep_list, head) { + hlist_del_rcu(&peer_mep->head); + kfree_rcu(peer_mep, rcu); + } + + RCU_INIT_POINTER(mep->b_port, NULL); + hlist_del_rcu(&mep->head); + kfree_rcu(mep, rcu); +} + +int br_cfm_mep_delete(struct net_bridge *br, + const u32 instance, + struct netlink_ext_ack *extack) +{ + struct br_cfm_mep *mep; + + ASSERT_RTNL(); + + mep = br_mep_find(br, instance); + if (!mep) { + NL_SET_ERR_MSG_MOD(extack, + "MEP instance does not exists"); + return -ENOENT; + } + + mep_delete_implementation(br, mep); + + return 0; +} + +int br_cfm_mep_config_set(struct net_bridge *br, + const u32 instance, + const struct br_cfm_mep_config *const config, + struct netlink_ext_ack *extack) +{ + struct br_cfm_mep *mep; + + ASSERT_RTNL(); + + if (config->mdlevel > 7) { + NL_SET_ERR_MSG_MOD(extack, + "MD level is invalid"); + return -EINVAL; + } + /* The MEP-ID is a 13 bit field in the CCM PDU identifying the MEP */ + if (config->mepid > 0x1FFF) { + NL_SET_ERR_MSG_MOD(extack, + "MEP-ID is invalid"); + return -EINVAL; + } + + mep = br_mep_find(br, instance); + if (!mep) { + NL_SET_ERR_MSG_MOD(extack, + "MEP instance does not exists"); + return -ENOENT; + } + + mep->config = *config; + + return 0; +} + +int br_cfm_cc_peer_mep_add(struct net_bridge *br, const u32 instance, + u32 mepid, + struct netlink_ext_ack *extack) +{ + struct br_cfm_peer_mep *peer_mep; + struct br_cfm_mep *mep; + + ASSERT_RTNL(); + + mep = br_mep_find(br, instance); + if (!mep) { + NL_SET_ERR_MSG_MOD(extack, + "MEP instance does not exists"); + return -ENOENT; + } + /* The MEP-ID is a 13 bit field in the CCM PDU identifying the MEP */ + if (mepid > 0x1FFF) { + NL_SET_ERR_MSG_MOD(extack, + "MEP-ID is invalid"); + return -EINVAL; + } + + peer_mep = br_peer_mep_find(mep, mepid); + if (peer_mep) { + NL_SET_ERR_MSG_MOD(extack, + "Peer MEP-ID already exists"); + return -EEXIST; + } + + peer_mep = kzalloc(sizeof(*peer_mep), GFP_KERNEL); + if (!peer_mep) + return -ENOMEM; + + peer_mep->mepid = mepid; + peer_mep->mep = mep; + + hlist_add_tail_rcu(&peer_mep->head, &mep->peer_mep_list); + + return 0; +} + +int br_cfm_cc_peer_mep_remove(struct net_bridge *br, const u32 instance, + u32 mepid, + struct netlink_ext_ack *extack) +{ + struct br_cfm_peer_mep *peer_mep; + struct br_cfm_mep *mep; + + ASSERT_RTNL(); + + mep = br_mep_find(br, instance); + if (!mep) { + NL_SET_ERR_MSG_MOD(extack, + "MEP instance does not exists"); + return -ENOENT; + } + + peer_mep = br_peer_mep_find(mep, mepid); + if (!peer_mep) { + NL_SET_ERR_MSG_MOD(extack, + "Peer MEP-ID does not exists"); + return -ENOENT; + } + + hlist_del_rcu(&peer_mep->head); + kfree_rcu(peer_mep, rcu); + + return 0; +} + +/* Deletes the CFM instances on a specific bridge port + */ +void br_cfm_port_del(struct net_bridge *br, struct net_bridge_port *port) +{ + struct hlist_node *n_store; + struct br_cfm_mep *mep; + + ASSERT_RTNL(); + + hlist_for_each_entry_safe(mep, n_store, &br->mep_list, head) + if (mep->create.ifindex == port->dev->ifindex) + mep_delete_implementation(br, mep); +} diff --git a/net/bridge/br_if.c b/net/bridge/br_if.c index a0e9a7937412..f7d2f472ae24 100644 --- a/net/bridge/br_if.c +++ b/net/bridge/br_if.c @@ -334,6 +334,7 @@ static void del_nbp(struct net_bridge_port *p) spin_unlock_bh(&br->lock); br_mrp_port_del(br, p); + br_cfm_port_del(br, p); br_ifinfo_notify(RTM_DELLINK, NULL, p); diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h index 90ead48fa762..f7c41380de4d 100644 --- a/net/bridge/br_private.h +++ b/net/bridge/br_private.h @@ -1459,6 +1459,16 @@ static inline int br_mrp_fill_info(struct sk_buff *skb, struct net_bridge *br) #endif +/* br_mrp.c */ +#if IS_ENABLED(CONFIG_BRIDGE_CFM) +void br_cfm_port_del(struct net_bridge *br, struct net_bridge_port *p); +#else +static inline void br_cfm_port_del(struct net_bridge *br, + struct net_bridge_port *p) +{ +} +#endif + /* br_netlink.c */ extern struct rtnl_link_ops br_link_ops; int br_netlink_init(void); diff --git a/net/bridge/br_private_cfm.h b/net/bridge/br_private_cfm.h new file mode 100644 index 000000000000..40fe982added --- /dev/null +++ b/net/bridge/br_private_cfm.h @@ -0,0 +1,61 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ + +#ifndef _BR_PRIVATE_CFM_H_ +#define _BR_PRIVATE_CFM_H_ + +#include "br_private.h" +#include + +struct br_cfm_mep_create { + enum br_cfm_domain domain; /* Domain for this MEP */ + enum br_cfm_mep_direction direction; /* Up or Down MEP direction */ + u32 ifindex; /* Residence port */ +}; + +int br_cfm_mep_create(struct net_bridge *br, + const u32 instance, + struct br_cfm_mep_create *const create, + struct netlink_ext_ack *extack); + +int br_cfm_mep_delete(struct net_bridge *br, + const u32 instance, + struct netlink_ext_ack *extack); + +struct br_cfm_mep_config { + u32 mdlevel; + u32 mepid; /* MEPID for this MEP */ + struct mac_addr unicast_mac; /* The MEP unicast MAC */ +}; + +int br_cfm_mep_config_set(struct net_bridge *br, + const u32 instance, + const struct br_cfm_mep_config *const config, + struct netlink_ext_ack *extack); + +int br_cfm_cc_peer_mep_add(struct net_bridge *br, const u32 instance, + u32 peer_mep_id, + struct netlink_ext_ack *extack); +int br_cfm_cc_peer_mep_remove(struct net_bridge *br, const u32 instance, + u32 peer_mep_id, + struct netlink_ext_ack *extack); + +struct br_cfm_mep { + /* list header of MEP instances */ + struct hlist_node head; + u32 instance; + struct br_cfm_mep_create create; + struct br_cfm_mep_config config; + /* List of multiple peer MEPs */ + struct hlist_head peer_mep_list; + struct net_bridge_port __rcu *b_port; + struct rcu_head rcu; +}; + +struct br_cfm_peer_mep { + struct hlist_node head; + struct br_cfm_mep *mep; + u32 mepid; + struct rcu_head rcu; +}; + +#endif /* _BR_PRIVATE_CFM_H_ */ From patchwork Thu Oct 15 11:54:13 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Henrik Bjoernlund X-Patchwork-Id: 11839105 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=-12.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,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 B082CC433DF for ; Thu, 15 Oct 2020 11:58:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3C4782145D for ; Thu, 15 Oct 2020 11:58:09 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=microchip.com header.i=@microchip.com header.b="hcrwcznq" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730404AbgJOL55 (ORCPT ); Thu, 15 Oct 2020 07:57:57 -0400 Received: from esa2.microchip.iphmx.com ([68.232.149.84]:1156 "EHLO esa2.microchip.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728157AbgJOL4Y (ORCPT ); Thu, 15 Oct 2020 07:56:24 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1602762982; x=1634298982; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=Z8ts2YQxF/ThywXhWjRypkelejWfFht7Zt4M3cUSfFs=; b=hcrwcznqU8BJry2IfeV199sLeeo8GR3D7mJgfH2mvfmIqv+PeGVeSuNG B68I8E4w8XU2VLan1ibJT/EDmzHSOu8/5/NhU/y1fl0mTC/mwTVnEwX9G u8YsdFja57Yb/B/GmIhaXEt/kws/7cHOoSyPjKvNbIt0umBcG9AFNJmZc GT1cpc0wnS7K3RbTOqWn3YuwwwUGHXToivqcXT1VRoTJ6PyBdQ3aSxezm kZX6HPS8m1Qh9plAyc+tuVLFzVXsoeEPgGl162UdxZIXoaM822wQYOw5W eqkiaS3djVzTjg+BjgCbm1Lgrzzrwa2se3B+V8YzkTB7PqjE+5yQWJp7m Q==; IronPort-SDR: 2sG5Rq6TR/eKHw4dQEmlzN68SaOiGpB7ED4KpRShHGrD0nSrQn5zV6TUyLJSAwFdQYh+IU5Kb3 +AnvLH6rAIX+WQS+hSkhNBK2UbdXLyAOH/C2Gi1tWFJ7A+2K6p38O49flu9vDLvKlcOoHtaCK6 xHcxj9yrDCDbZP2xp+KjFvBXnfcOgkWOyVT8UpYs0mao2qECOgLImkXkw+3URadLPCEL9jw8vq SammMjRKApQ0m95IezPQ/CB044cPHQ9mKnj0fdrgkIGHFp2xVIg4EuXNu0OqWbzlc8WgziUnaY Awk= X-IronPort-AV: E=Sophos;i="5.77,378,1596524400"; d="scan'208";a="92709651" Received: from smtpout.microchip.com (HELO email.microchip.com) ([198.175.253.82]) by esa2.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 15 Oct 2020 04:56:20 -0700 Received: from chn-vm-ex03.mchp-main.com (10.10.85.151) by chn-vm-ex03.mchp-main.com (10.10.85.151) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1979.3; Thu, 15 Oct 2020 04:56:17 -0700 Received: from soft-test08.microsemi.net (10.10.115.15) by chn-vm-ex03.mchp-main.com (10.10.85.151) with Microsoft SMTP Server id 15.1.1979.3 via Frontend Transport; Thu, 15 Oct 2020 04:56:15 -0700 From: Henrik Bjoernlund To: , , , , , , , , , CC: Henrik Bjoernlund , Horatiu Vultur Subject: [PATCH net-next v6 05/10] bridge: cfm: Kernel space implementation of CFM. CCM frame TX added. Date: Thu, 15 Oct 2020 11:54:13 +0000 Message-ID: <20201015115418.2711454-6-henrik.bjoernlund@microchip.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20201015115418.2711454-1-henrik.bjoernlund@microchip.com> References: <20201015115418.2711454-1-henrik.bjoernlund@microchip.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org This is the second commit of the implementation of the CFM protocol according to 802.1Q section 12.14. Functionality is extended with CCM frame transmission. Interface is extended with these functions: br_cfm_cc_rdi_set() br_cfm_cc_ccm_tx() br_cfm_cc_config_set() A MEP Continuity Check feature can be configured by br_cfm_cc_config_set() The Continuity Check parameters can be configured to be used when transmitting CCM. A MEP can be configured to start or stop transmission of CCM frames by br_cfm_cc_ccm_tx() The CCM will be transmitted for a selected period in seconds. Must call this function before timeout to keep transmission alive. A MEP transmitting CCM can be configured with inserted RDI in PDU by br_cfm_cc_rdi_set() Signed-off-by: Henrik Bjoernlund Reviewed-by: Horatiu Vultur Acked-by: Nikolay Aleksandrov --- include/uapi/linux/cfm_bridge.h | 39 ++++- net/bridge/br_cfm.c | 285 ++++++++++++++++++++++++++++++++ net/bridge/br_private_cfm.h | 54 ++++++ 3 files changed, 377 insertions(+), 1 deletion(-) diff --git a/include/uapi/linux/cfm_bridge.h b/include/uapi/linux/cfm_bridge.h index a262a8c0e085..84a3817da90b 100644 --- a/include/uapi/linux/cfm_bridge.h +++ b/include/uapi/linux/cfm_bridge.h @@ -6,7 +6,32 @@ #include #include -#define CFM_MAID_LENGTH 48 +#define ETHER_HEADER_LENGTH (6+6+4+2) +#define CFM_MAID_LENGTH 48 +#define CFM_CCM_PDU_LENGTH 75 +#define CFM_PORT_STATUS_TLV_LENGTH 4 +#define CFM_IF_STATUS_TLV_LENGTH 4 +#define CFM_IF_STATUS_TLV_TYPE 4 +#define CFM_PORT_STATUS_TLV_TYPE 2 +#define CFM_ENDE_TLV_TYPE 0 +#define CFM_CCM_MAX_FRAME_LENGTH (ETHER_HEADER_LENGTH+\ + CFM_CCM_PDU_LENGTH+\ + CFM_PORT_STATUS_TLV_LENGTH+\ + CFM_IF_STATUS_TLV_LENGTH) +#define CFM_FRAME_PRIO 7 +#define CFM_CCM_TLV_OFFSET 70 +#define CFM_CCM_ITU_RESERVED_SIZE 16 + +struct br_cfm_common_hdr { + __u8 mdlevel_version; + __u8 opcode; + __u8 flags; + __u8 tlv_offset; +}; + +enum br_cfm_opcodes { + BR_CFM_OPCODE_CCM = 0x1, +}; /* MEP domain */ enum br_cfm_domain { @@ -20,4 +45,16 @@ enum br_cfm_mep_direction { BR_CFM_MEP_DIRECTION_UP, }; +/* CCM interval supported. */ +enum br_cfm_ccm_interval { + BR_CFM_CCM_INTERVAL_NONE, + BR_CFM_CCM_INTERVAL_3_3_MS, + BR_CFM_CCM_INTERVAL_10_MS, + BR_CFM_CCM_INTERVAL_100_MS, + BR_CFM_CCM_INTERVAL_1_SEC, + BR_CFM_CCM_INTERVAL_10_SEC, + BR_CFM_CCM_INTERVAL_1_MIN, + BR_CFM_CCM_INTERVAL_10_MIN, +}; + #endif diff --git a/net/bridge/br_cfm.c b/net/bridge/br_cfm.c index d171f69a7f30..b0d27f68c8dc 100644 --- a/net/bridge/br_cfm.c +++ b/net/bridge/br_cfm.c @@ -53,6 +53,185 @@ static struct net_bridge_port *br_mep_get_port(struct net_bridge *br, return NULL; } +/* Calculate the CCM interval in us. */ +static u32 interval_to_us(enum br_cfm_ccm_interval interval) +{ + switch (interval) { + case BR_CFM_CCM_INTERVAL_NONE: + return 0; + case BR_CFM_CCM_INTERVAL_3_3_MS: + return 3300; + case BR_CFM_CCM_INTERVAL_10_MS: + return 10 * 1000; + case BR_CFM_CCM_INTERVAL_100_MS: + return 100 * 1000; + case BR_CFM_CCM_INTERVAL_1_SEC: + return 1000 * 1000; + case BR_CFM_CCM_INTERVAL_10_SEC: + return 10 * 1000 * 1000; + case BR_CFM_CCM_INTERVAL_1_MIN: + return 60 * 1000 * 1000; + case BR_CFM_CCM_INTERVAL_10_MIN: + return 10 * 60 * 1000 * 1000; + } + return 0; +} + +/* Convert the interface interval to CCM PDU value. */ +static u32 interval_to_pdu(enum br_cfm_ccm_interval interval) +{ + switch (interval) { + case BR_CFM_CCM_INTERVAL_NONE: + return 0; + case BR_CFM_CCM_INTERVAL_3_3_MS: + return 1; + case BR_CFM_CCM_INTERVAL_10_MS: + return 2; + case BR_CFM_CCM_INTERVAL_100_MS: + return 3; + case BR_CFM_CCM_INTERVAL_1_SEC: + return 4; + case BR_CFM_CCM_INTERVAL_10_SEC: + return 5; + case BR_CFM_CCM_INTERVAL_1_MIN: + return 6; + case BR_CFM_CCM_INTERVAL_10_MIN: + return 7; + } + return 0; +} + +static struct sk_buff *ccm_frame_build(struct br_cfm_mep *mep, + const struct br_cfm_cc_ccm_tx_info *const tx_info) + +{ + struct br_cfm_common_hdr *common_hdr; + struct net_bridge_port *b_port; + struct br_cfm_maid *maid; + u8 *itu_reserved, *e_tlv; + struct ethhdr *eth_hdr; + struct sk_buff *skb; + __be32 *status_tlv; + __be32 *snumber; + __be16 *mepid; + + skb = dev_alloc_skb(CFM_CCM_MAX_FRAME_LENGTH); + if (!skb) + return NULL; + + rcu_read_lock(); + b_port = rcu_dereference(mep->b_port); + if (!b_port) { + kfree_skb(skb); + rcu_read_unlock(); + return NULL; + } + skb->dev = b_port->dev; + rcu_read_unlock(); + /* The device cannot be deleted until the work_queue functions has + * completed. This function is called from ccm_tx_work_expired() + * that is a work_queue functions. + */ + + skb->protocol = htons(ETH_P_CFM); + skb->priority = CFM_FRAME_PRIO; + + /* Ethernet header */ + eth_hdr = skb_put(skb, sizeof(*eth_hdr)); + ether_addr_copy(eth_hdr->h_dest, tx_info->dmac.addr); + ether_addr_copy(eth_hdr->h_source, mep->config.unicast_mac.addr); + eth_hdr->h_proto = htons(ETH_P_CFM); + + /* Common CFM Header */ + common_hdr = skb_put(skb, sizeof(*common_hdr)); + common_hdr->mdlevel_version = mep->config.mdlevel << 5; + common_hdr->opcode = BR_CFM_OPCODE_CCM; + common_hdr->flags = (mep->rdi << 7) | + interval_to_pdu(mep->cc_config.exp_interval); + common_hdr->tlv_offset = CFM_CCM_TLV_OFFSET; + + /* Sequence number */ + snumber = skb_put(skb, sizeof(*snumber)); + if (tx_info->seq_no_update) { + *snumber = cpu_to_be32(mep->ccm_tx_snumber); + mep->ccm_tx_snumber += 1; + } else { + *snumber = 0; + } + + mepid = skb_put(skb, sizeof(*mepid)); + *mepid = cpu_to_be16((u16)mep->config.mepid); + + maid = skb_put(skb, sizeof(*maid)); + memcpy(maid->data, mep->cc_config.exp_maid.data, sizeof(maid->data)); + + /* ITU reserved (CFM_CCM_ITU_RESERVED_SIZE octets) */ + itu_reserved = skb_put(skb, CFM_CCM_ITU_RESERVED_SIZE); + memset(itu_reserved, 0, CFM_CCM_ITU_RESERVED_SIZE); + + /* Generel CFM TLV format: + * TLV type: one byte + * TLV value length: two bytes + * TLV value: 'TLV value length' bytes + */ + + /* Port status TLV. The value length is 1. Total of 4 bytes. */ + if (tx_info->port_tlv) { + status_tlv = skb_put(skb, sizeof(*status_tlv)); + *status_tlv = cpu_to_be32((CFM_PORT_STATUS_TLV_TYPE << 24) | + (1 << 8) | /* Value length */ + (tx_info->port_tlv_value & 0xFF)); + } + + /* Interface status TLV. The value length is 1. Total of 4 bytes. */ + if (tx_info->if_tlv) { + status_tlv = skb_put(skb, sizeof(*status_tlv)); + *status_tlv = cpu_to_be32((CFM_IF_STATUS_TLV_TYPE << 24) | + (1 << 8) | /* Value length */ + (tx_info->if_tlv_value & 0xFF)); + } + + /* End TLV */ + e_tlv = skb_put(skb, sizeof(*e_tlv)); + *e_tlv = CFM_ENDE_TLV_TYPE; + + return skb; +} + +static void ccm_frame_tx(struct sk_buff *skb) +{ + skb_reset_network_header(skb); + dev_queue_xmit(skb); +} + +/* This function is called with the configured CC 'expected_interval' + * in order to drive CCM transmission when enabled. + */ +static void ccm_tx_work_expired(struct work_struct *work) +{ + struct delayed_work *del_work; + struct br_cfm_mep *mep; + struct sk_buff *skb; + u32 interval_us; + + del_work = to_delayed_work(work); + mep = container_of(del_work, struct br_cfm_mep, ccm_tx_dwork); + + if (time_before_eq(mep->ccm_tx_end, jiffies)) { + /* Transmission period has ended */ + mep->cc_ccm_tx_info.period = 0; + return; + } + + skb = ccm_frame_build(mep, &mep->cc_ccm_tx_info); + if (skb) + ccm_frame_tx(skb); + + interval_us = interval_to_us(mep->cc_config.exp_interval); + queue_delayed_work(system_wq, &mep->ccm_tx_dwork, + usecs_to_jiffies(interval_us)); +} + int br_cfm_mep_create(struct net_bridge *br, const u32 instance, struct br_cfm_mep_create *const create, @@ -115,6 +294,7 @@ int br_cfm_mep_create(struct net_bridge *br, rcu_assign_pointer(mep->b_port, p); INIT_HLIST_HEAD(&mep->peer_mep_list); + INIT_DELAYED_WORK(&mep->ccm_tx_dwork, ccm_tx_work_expired); hlist_add_tail_rcu(&mep->head, &br->mep_list); @@ -135,6 +315,8 @@ static void mep_delete_implementation(struct net_bridge *br, kfree_rcu(peer_mep, rcu); } + cancel_delayed_work_sync(&mep->ccm_tx_dwork); + RCU_INIT_POINTER(mep->b_port, NULL); hlist_del_rcu(&mep->head); kfree_rcu(mep, rcu); @@ -193,6 +375,32 @@ int br_cfm_mep_config_set(struct net_bridge *br, return 0; } +int br_cfm_cc_config_set(struct net_bridge *br, + const u32 instance, + const struct br_cfm_cc_config *const config, + struct netlink_ext_ack *extack) +{ + struct br_cfm_mep *mep; + + ASSERT_RTNL(); + + mep = br_mep_find(br, instance); + if (!mep) { + NL_SET_ERR_MSG_MOD(extack, + "MEP instance does not exists"); + return -ENOENT; + } + + /* Check for no change in configuration */ + if (memcmp(config, &mep->cc_config, sizeof(*config)) == 0) + return 0; + + mep->cc_config = *config; + mep->ccm_tx_snumber = 1; + + return 0; +} + int br_cfm_cc_peer_mep_add(struct net_bridge *br, const u32 instance, u32 mepid, struct netlink_ext_ack *extack) @@ -263,6 +471,83 @@ int br_cfm_cc_peer_mep_remove(struct net_bridge *br, const u32 instance, return 0; } +int br_cfm_cc_rdi_set(struct net_bridge *br, const u32 instance, + const bool rdi, struct netlink_ext_ack *extack) +{ + struct br_cfm_mep *mep; + + ASSERT_RTNL(); + + mep = br_mep_find(br, instance); + if (!mep) { + NL_SET_ERR_MSG_MOD(extack, + "MEP instance does not exists"); + return -ENOENT; + } + + mep->rdi = rdi; + + return 0; +} + +int br_cfm_cc_ccm_tx(struct net_bridge *br, const u32 instance, + const struct br_cfm_cc_ccm_tx_info *const tx_info, + struct netlink_ext_ack *extack) +{ + struct br_cfm_mep *mep; + + ASSERT_RTNL(); + + mep = br_mep_find(br, instance); + if (!mep) { + NL_SET_ERR_MSG_MOD(extack, + "MEP instance does not exists"); + return -ENOENT; + } + + if (memcmp(tx_info, &mep->cc_ccm_tx_info, sizeof(*tx_info)) == 0) { + /* No change in tx_info. */ + if (mep->cc_ccm_tx_info.period == 0) + /* Transmission is not enabled - just return */ + return 0; + + /* Transmission is ongoing, the end time is recalculated */ + mep->ccm_tx_end = jiffies + + usecs_to_jiffies(tx_info->period * 1000000); + return 0; + } + + if (tx_info->period == 0 && mep->cc_ccm_tx_info.period == 0) + /* Some change in info and transmission is not ongoing */ + goto save; + + if (tx_info->period != 0 && mep->cc_ccm_tx_info.period != 0) { + /* Some change in info and transmission is ongoing + * The end time is recalculated + */ + mep->ccm_tx_end = jiffies + + usecs_to_jiffies(tx_info->period * 1000000); + + goto save; + } + + if (tx_info->period == 0 && mep->cc_ccm_tx_info.period != 0) { + cancel_delayed_work_sync(&mep->ccm_tx_dwork); + goto save; + } + + /* Start delayed work to transmit CCM frames. It is done with zero delay + * to send first frame immediately + */ + mep->ccm_tx_end = jiffies + usecs_to_jiffies(tx_info->period * 1000000); + queue_delayed_work(system_wq, &mep->ccm_tx_dwork, 0); + +save: + mep->cc_ccm_tx_info = *tx_info; + + return 0; +} + /* Deletes the CFM instances on a specific bridge port */ void br_cfm_port_del(struct net_bridge *br, struct net_bridge_port *port) diff --git a/net/bridge/br_private_cfm.h b/net/bridge/br_private_cfm.h index 40fe982added..8d1b449acfbf 100644 --- a/net/bridge/br_private_cfm.h +++ b/net/bridge/br_private_cfm.h @@ -32,6 +32,24 @@ int br_cfm_mep_config_set(struct net_bridge *br, const struct br_cfm_mep_config *const config, struct netlink_ext_ack *extack); +struct br_cfm_maid { + u8 data[CFM_MAID_LENGTH]; +}; + +struct br_cfm_cc_config { + /* Expected received CCM PDU MAID. */ + struct br_cfm_maid exp_maid; + + /* Expected received CCM PDU interval. */ + /* Transmitting CCM PDU interval when CCM tx is enabled. */ + enum br_cfm_ccm_interval exp_interval; +}; + +int br_cfm_cc_config_set(struct net_bridge *br, + const u32 instance, + const struct br_cfm_cc_config *const config, + struct netlink_ext_ack *extack); + int br_cfm_cc_peer_mep_add(struct net_bridge *br, const u32 instance, u32 peer_mep_id, struct netlink_ext_ack *extack); @@ -39,15 +57,51 @@ int br_cfm_cc_peer_mep_remove(struct net_bridge *br, const u32 instance, u32 peer_mep_id, struct netlink_ext_ack *extack); +/* Transmitted CCM Remote Defect Indication status set. + * This RDI is inserted in transmitted CCM PDUs if CCM transmission is enabled. + * See br_cfm_cc_ccm_tx() with interval != BR_CFM_CCM_INTERVAL_NONE + */ +int br_cfm_cc_rdi_set(struct net_bridge *br, const u32 instance, + const bool rdi, struct netlink_ext_ack *extack); + +/* OAM PDU Tx information */ +struct br_cfm_cc_ccm_tx_info { + struct mac_addr dmac; + /* The CCM will be transmitted for this period in seconds. + * Call br_cfm_cc_ccm_tx before timeout to keep transmission alive. + * When period is zero any ongoing transmission will be stopped. + */ + u32 period; + + bool seq_no_update; /* Update Tx CCM sequence number */ + bool if_tlv; /* Insert Interface Status TLV */ + u8 if_tlv_value; /* Interface Status TLV value */ + bool port_tlv; /* Insert Port Status TLV */ + u8 port_tlv_value; /* Port Status TLV value */ + /* Sender ID TLV ?? + * Organization-Specific TLV ?? + */ +}; + +int br_cfm_cc_ccm_tx(struct net_bridge *br, const u32 instance, + const struct br_cfm_cc_ccm_tx_info *const tx_info, + struct netlink_ext_ack *extack); + struct br_cfm_mep { /* list header of MEP instances */ struct hlist_node head; u32 instance; struct br_cfm_mep_create create; struct br_cfm_mep_config config; + struct br_cfm_cc_config cc_config; + struct br_cfm_cc_ccm_tx_info cc_ccm_tx_info; /* List of multiple peer MEPs */ struct hlist_head peer_mep_list; struct net_bridge_port __rcu *b_port; + unsigned long ccm_tx_end; + struct delayed_work ccm_tx_dwork; + u32 ccm_tx_snumber; + bool rdi; struct rcu_head rcu; }; From patchwork Thu Oct 15 11:54:14 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Henrik Bjoernlund X-Patchwork-Id: 11839113 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=-12.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 D4B90C43457 for ; Thu, 15 Oct 2020 11:59:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 636DE2145D for ; Thu, 15 Oct 2020 11:59:52 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=microchip.com header.i=@microchip.com header.b="a5ahRzOM" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730692AbgJOL7r (ORCPT ); Thu, 15 Oct 2020 07:59:47 -0400 Received: from esa1.microchip.iphmx.com ([68.232.147.91]:43462 "EHLO esa1.microchip.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729837AbgJOL5E (ORCPT ); Thu, 15 Oct 2020 07:57:04 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1602763022; x=1634299022; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=4X4XUjW8AaclVSdh6eP0qujGalbRKgQLaXjaP3yBW0E=; b=a5ahRzOMRyiLKwYLvqMPnJVMMHZXYLPs79/kwjEsM/S4ZgvvwXvpAXXT 9wPtgYbVTbOvvnkWeszlLosXJlnVhfEvA/0umncBBoUyHFqWVZLFJDV2d fe4FHtbTaXe6/tFbibSr/3wE8M4hoz640iRwq5Y76mWrOYPsFuuj3ZFHz wKe811F//bo4iVmXZYFxZXf73JJ4utQjOo8pkcb92mTdOnhvR3QlCqp7S Qxkd+j6oPk1sT1bLldYyeNMpVHyZDS6SUp9nmx85J/7LIb3y2d/xr6xzL pzI8NrkpVnBpIoEcUsR9L8QqihuAAIfvCK5D6vknMip79G6/1WbHt7ib4 w==; IronPort-SDR: uXJb8uj1SWpUoeQK4J3ouZsnyfrKz9X3qQSWepAzqr+fQ56eVOuNHy2FD9WTygXECV4v3UUXBx 4TmnYloD/h/jvLE33auIfsp6NxXvfXeTCPFKOcKSbdZdOrWV3XnUlk6c3U8B4A1XKWIxklGas9 dRKTfvyArsic8lRcOvbWtt954L/kjhiQOaxP0pWbux0oGmofcvmpMcLoTUiClNFX7KnceVnNER HO+4nSER5N/qPX+39n0N5GF4i5D5/dMYTQEwDP4k7EjwrUxwao8LRqEyuJtF9motEV9fpRMpal oSw= X-IronPort-AV: E=Sophos;i="5.77,378,1596524400"; d="scan'208";a="99627373" Received: from smtpout.microchip.com (HELO email.microchip.com) ([198.175.253.82]) by esa1.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 15 Oct 2020 04:56:21 -0700 Received: from chn-vm-ex03.mchp-main.com (10.10.85.151) by chn-vm-ex03.mchp-main.com (10.10.85.151) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1979.3; Thu, 15 Oct 2020 04:56:20 -0700 Received: from soft-test08.microsemi.net (10.10.115.15) by chn-vm-ex03.mchp-main.com (10.10.85.151) with Microsoft SMTP Server id 15.1.1979.3 via Frontend Transport; Thu, 15 Oct 2020 04:56:18 -0700 From: Henrik Bjoernlund To: , , , , , , , , , CC: Henrik Bjoernlund , Horatiu Vultur Subject: [PATCH net-next v6 06/10] bridge: cfm: Kernel space implementation of CFM. CCM frame RX added. Date: Thu, 15 Oct 2020 11:54:14 +0000 Message-ID: <20201015115418.2711454-7-henrik.bjoernlund@microchip.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20201015115418.2711454-1-henrik.bjoernlund@microchip.com> References: <20201015115418.2711454-1-henrik.bjoernlund@microchip.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org This is the third commit of the implementation of the CFM protocol according to 802.1Q section 12.14. Functionality is extended with CCM frame reception. The MEP instance now contains CCM based status information. Most important is the CCM defect status indicating if correct CCM frames are received with the expected interval. Signed-off-by: Henrik Bjoernlund Reviewed-by: Horatiu Vultur Acked-by: Nikolay Aleksandrov --- include/uapi/linux/cfm_bridge.h | 4 + net/bridge/br_cfm.c | 269 ++++++++++++++++++++++++++++++++ net/bridge/br_private_cfm.h | 32 ++++ 3 files changed, 305 insertions(+) diff --git a/include/uapi/linux/cfm_bridge.h b/include/uapi/linux/cfm_bridge.h index 84a3817da90b..3c1cbd1db2f5 100644 --- a/include/uapi/linux/cfm_bridge.h +++ b/include/uapi/linux/cfm_bridge.h @@ -20,6 +20,10 @@ CFM_IF_STATUS_TLV_LENGTH) #define CFM_FRAME_PRIO 7 #define CFM_CCM_TLV_OFFSET 70 +#define CFM_CCM_PDU_MAID_OFFSET 10 +#define CFM_CCM_PDU_MEPID_OFFSET 8 +#define CFM_CCM_PDU_SEQNR_OFFSET 4 +#define CFM_CCM_PDU_TLV_OFFSET 74 #define CFM_CCM_ITU_RESERVED_SIZE 16 struct br_cfm_common_hdr { diff --git a/net/bridge/br_cfm.c b/net/bridge/br_cfm.c index b0d27f68c8dc..d63b705feb48 100644 --- a/net/bridge/br_cfm.c +++ b/net/bridge/br_cfm.c @@ -101,6 +101,56 @@ static u32 interval_to_pdu(enum br_cfm_ccm_interval interval) return 0; } +/* Convert the CCM PDU value to interval on interface. */ +static u32 pdu_to_interval(u32 value) +{ + switch (value) { + case 0: + return BR_CFM_CCM_INTERVAL_NONE; + case 1: + return BR_CFM_CCM_INTERVAL_3_3_MS; + case 2: + return BR_CFM_CCM_INTERVAL_10_MS; + case 3: + return BR_CFM_CCM_INTERVAL_100_MS; + case 4: + return BR_CFM_CCM_INTERVAL_1_SEC; + case 5: + return BR_CFM_CCM_INTERVAL_10_SEC; + case 6: + return BR_CFM_CCM_INTERVAL_1_MIN; + case 7: + return BR_CFM_CCM_INTERVAL_10_MIN; + } + return BR_CFM_CCM_INTERVAL_NONE; +} + +static void ccm_rx_timer_start(struct br_cfm_peer_mep *peer_mep) +{ + u32 interval_us; + + interval_us = interval_to_us(peer_mep->mep->cc_config.exp_interval); + /* Function ccm_rx_dwork must be called with 1/4 + * of the configured CC 'expected_interval' + * in order to detect CCM defect after 3.25 interval. + */ + queue_delayed_work(system_wq, &peer_mep->ccm_rx_dwork, + usecs_to_jiffies(interval_us / 4)); +} + +static void cc_peer_enable(struct br_cfm_peer_mep *peer_mep) +{ + memset(&peer_mep->cc_status, 0, sizeof(peer_mep->cc_status)); + peer_mep->ccm_rx_count_miss = 0; + + ccm_rx_timer_start(peer_mep); +} + +static void cc_peer_disable(struct br_cfm_peer_mep *peer_mep) +{ + cancel_delayed_work_sync(&peer_mep->ccm_rx_dwork); +} + static struct sk_buff *ccm_frame_build(struct br_cfm_mep *mep, const struct br_cfm_cc_ccm_tx_info *const tx_info) @@ -232,6 +282,200 @@ static void ccm_tx_work_expired(struct work_struct *work) usecs_to_jiffies(interval_us)); } +/* This function is called with 1/4 of the configured CC 'expected_interval' + * in order to detect CCM defect after 3.25 interval. + */ +static void ccm_rx_work_expired(struct work_struct *work) +{ + struct br_cfm_peer_mep *peer_mep; + struct delayed_work *del_work; + + del_work = to_delayed_work(work); + peer_mep = container_of(del_work, struct br_cfm_peer_mep, ccm_rx_dwork); + + /* After 13 counts (4 * 3,25) then 3.25 intervals are expired */ + if (peer_mep->ccm_rx_count_miss < 13) { + /* 3.25 intervals are NOT expired without CCM reception */ + peer_mep->ccm_rx_count_miss++; + + /* Start timer again */ + ccm_rx_timer_start(peer_mep); + } else { + /* 3.25 intervals are expired without CCM reception. + * CCM defect detected + */ + peer_mep->cc_status.ccm_defect = true; + } +} + +static u32 ccm_tlv_extract(struct sk_buff *skb, u32 index, + struct br_cfm_peer_mep *peer_mep) +{ + __be32 *s_tlv; + __be32 _s_tlv; + u32 h_s_tlv; + u8 *e_tlv; + u8 _e_tlv; + + e_tlv = skb_header_pointer(skb, index, sizeof(_e_tlv), &_e_tlv); + if (!e_tlv) + return 0; + + /* TLV is present - get the status TLV */ + s_tlv = skb_header_pointer(skb, + index, + sizeof(_s_tlv), &_s_tlv); + if (!s_tlv) + return 0; + + h_s_tlv = ntohl(*s_tlv); + if ((h_s_tlv >> 24) == CFM_IF_STATUS_TLV_TYPE) { + /* Interface status TLV */ + peer_mep->cc_status.tlv_seen = true; + peer_mep->cc_status.if_tlv_value = (h_s_tlv & 0xFF); + } + + if ((h_s_tlv >> 24) == CFM_PORT_STATUS_TLV_TYPE) { + /* Port status TLV */ + peer_mep->cc_status.tlv_seen = true; + peer_mep->cc_status.port_tlv_value = (h_s_tlv & 0xFF); + } + + /* The Sender ID TLV is not handled */ + /* The Organization-Specific TLV is not handled */ + + /* Return the length of this tlv. + * This is the length of the value field plus 3 bytes for size of type + * field and length field + */ + return ((h_s_tlv >> 8) & 0xFFFF) + 3; +} + +/* note: already called with rcu_read_lock */ +static int br_cfm_frame_rx(struct net_bridge_port *port, struct sk_buff *skb) +{ + u32 mdlevel, interval, size, index, max; + const struct br_cfm_common_hdr *hdr; + struct br_cfm_peer_mep *peer_mep; + const struct br_cfm_maid *maid; + struct br_cfm_common_hdr _hdr; + struct br_cfm_maid _maid; + struct br_cfm_mep *mep; + struct net_bridge *br; + __be32 *snumber; + __be32 _snumber; + __be16 *mepid; + __be16 _mepid; + + if (port->state == BR_STATE_DISABLED) + return 0; + + hdr = skb_header_pointer(skb, 0, sizeof(_hdr), &_hdr); + if (!hdr) + return 1; + + br = port->br; + mep = br_mep_find_ifindex(br, port->dev->ifindex); + if (unlikely(!mep)) + /* No MEP on this port - must be forwarded */ + return 0; + + mdlevel = hdr->mdlevel_version >> 5; + if (mdlevel > mep->config.mdlevel) + /* The level is above this MEP level - must be forwarded */ + return 0; + + if ((hdr->mdlevel_version & 0x1F) != 0) { + /* Invalid version */ + mep->status.version_unexp_seen = true; + return 1; + } + + if (mdlevel < mep->config.mdlevel) { + /* The level is below this MEP level */ + mep->status.rx_level_low_seen = true; + return 1; + } + + if (hdr->opcode == BR_CFM_OPCODE_CCM) { + /* CCM PDU received. */ + /* MA ID is after common header + sequence number + MEP ID */ + maid = skb_header_pointer(skb, + CFM_CCM_PDU_MAID_OFFSET, + sizeof(_maid), &_maid); + if (!maid) + return 1; + if (memcmp(maid->data, mep->cc_config.exp_maid.data, + sizeof(maid->data))) + /* MA ID not as expected */ + return 1; + + /* MEP ID is after common header + sequence number */ + mepid = skb_header_pointer(skb, + CFM_CCM_PDU_MEPID_OFFSET, + sizeof(_mepid), &_mepid); + if (!mepid) + return 1; + peer_mep = br_peer_mep_find(mep, (u32)ntohs(*mepid)); + if (!peer_mep) + return 1; + + /* Interval is in common header flags */ + interval = hdr->flags & 0x07; + if (mep->cc_config.exp_interval != pdu_to_interval(interval)) + /* Interval not as expected */ + return 1; + + /* A valid CCM frame is received */ + if (peer_mep->cc_status.ccm_defect) { + peer_mep->cc_status.ccm_defect = false; + + /* Start CCM RX timer */ + ccm_rx_timer_start(peer_mep); + } + + peer_mep->cc_status.seen = true; + peer_mep->ccm_rx_count_miss = 0; + + /* RDI is in common header flags */ + peer_mep->cc_status.rdi = (hdr->flags & 0x80) ? true : false; + + /* Sequence number is after common header */ + snumber = skb_header_pointer(skb, + CFM_CCM_PDU_SEQNR_OFFSET, + sizeof(_snumber), &_snumber); + if (!snumber) + return 1; + if (ntohl(*snumber) != (mep->ccm_rx_snumber + 1)) + /* Unexpected sequence number */ + peer_mep->cc_status.seq_unexp_seen = true; + + mep->ccm_rx_snumber = ntohl(*snumber); + + /* TLV end is after common header + sequence number + MEP ID + + * MA ID + ITU reserved + */ + index = CFM_CCM_PDU_TLV_OFFSET; + max = 0; + do { /* Handle all TLVs */ + size = ccm_tlv_extract(skb, index, peer_mep); + index += size; + max += 1; + } while (size != 0 && max < 4); /* Max four TLVs possible */ + + return 1; + } + + mep->status.opcode_unexp_seen = true; + + return 1; +} + +static struct br_frame_type cfm_frame_type __read_mostly = { + .type = cpu_to_be16(ETH_P_CFM), + .frame_handler = br_cfm_frame_rx, +}; + int br_cfm_mep_create(struct net_bridge *br, const u32 instance, struct br_cfm_mep_create *const create, @@ -296,6 +540,9 @@ int br_cfm_mep_create(struct net_bridge *br, INIT_HLIST_HEAD(&mep->peer_mep_list); INIT_DELAYED_WORK(&mep->ccm_tx_dwork, ccm_tx_work_expired); + if (hlist_empty(&br->mep_list)) + br_add_frame(br, &cfm_frame_type); + hlist_add_tail_rcu(&mep->head, &br->mep_list); return 0; @@ -311,6 +558,7 @@ static void mep_delete_implementation(struct net_bridge *br, /* Empty and free peer MEP list */ hlist_for_each_entry_safe(peer_mep, n_store, &mep->peer_mep_list, head) { + cancel_delayed_work_sync(&peer_mep->ccm_rx_dwork); hlist_del_rcu(&peer_mep->head); kfree_rcu(peer_mep, rcu); } @@ -320,6 +568,9 @@ static void mep_delete_implementation(struct net_bridge *br, RCU_INIT_POINTER(mep->b_port, NULL); hlist_del_rcu(&mep->head); kfree_rcu(mep, rcu); + + if (hlist_empty(&br->mep_list)) + br_del_frame(br, &cfm_frame_type); } int br_cfm_mep_delete(struct net_bridge *br, @@ -380,6 +631,7 @@ int br_cfm_cc_config_set(struct net_bridge *br, const struct br_cfm_cc_config *const config, struct netlink_ext_ack *extack) { + struct br_cfm_peer_mep *peer_mep; struct br_cfm_mep *mep; ASSERT_RTNL(); @@ -395,7 +647,18 @@ int br_cfm_cc_config_set(struct net_bridge *br, if (memcmp(config, &mep->cc_config, sizeof(*config)) == 0) return 0; + if (config->enable && !mep->cc_config.enable) + /* CC is enabled */ + hlist_for_each_entry(peer_mep, &mep->peer_mep_list, head) + cc_peer_enable(peer_mep); + + if (!config->enable && mep->cc_config.enable) + /* CC is disabled */ + hlist_for_each_entry(peer_mep, &mep->peer_mep_list, head) + cc_peer_disable(peer_mep); + mep->cc_config = *config; + mep->ccm_rx_snumber = 0; mep->ccm_tx_snumber = 1; return 0; @@ -436,6 +699,10 @@ int br_cfm_cc_peer_mep_add(struct net_bridge *br, const u32 instance, peer_mep->mepid = mepid; peer_mep->mep = mep; + INIT_DELAYED_WORK(&peer_mep->ccm_rx_dwork, ccm_rx_work_expired); + + if (mep->cc_config.enable) + cc_peer_enable(peer_mep); hlist_add_tail_rcu(&peer_mep->head, &mep->peer_mep_list); @@ -465,6 +732,8 @@ int br_cfm_cc_peer_mep_remove(struct net_bridge *br, const u32 instance, return -ENOENT; } + cc_peer_disable(peer_mep); + hlist_del_rcu(&peer_mep->head); kfree_rcu(peer_mep, rcu); diff --git a/net/bridge/br_private_cfm.h b/net/bridge/br_private_cfm.h index 8d1b449acfbf..a43a5e7fa2c3 100644 --- a/net/bridge/br_private_cfm.h +++ b/net/bridge/br_private_cfm.h @@ -43,6 +43,8 @@ struct br_cfm_cc_config { /* Expected received CCM PDU interval. */ /* Transmitting CCM PDU interval when CCM tx is enabled. */ enum br_cfm_ccm_interval exp_interval; + + bool enable; /* Enable/disable CCM PDU handling */ }; int br_cfm_cc_config_set(struct net_bridge *br, @@ -87,6 +89,31 @@ int br_cfm_cc_ccm_tx(struct net_bridge *br, const u32 instance, const struct br_cfm_cc_ccm_tx_info *const tx_info, struct netlink_ext_ack *extack); +struct br_cfm_mep_status { + /* Indications that an OAM PDU has been seen. */ + bool opcode_unexp_seen; /* RX of OAM PDU with unexpected opcode */ + bool version_unexp_seen; /* RX of OAM PDU with unexpected version */ + bool rx_level_low_seen; /* Rx of OAM PDU with level low */ +}; + +struct br_cfm_cc_peer_status { + /* This CCM related status is based on the latest received CCM PDU. */ + u8 port_tlv_value; /* Port Status TLV value */ + u8 if_tlv_value; /* Interface Status TLV value */ + + /* CCM has not been received for 3.25 intervals */ + u8 ccm_defect:1; + + /* (RDI == 1) for last received CCM PDU */ + u8 rdi:1; + + /* Indications that a CCM PDU has been seen. */ + u8 seen:1; /* CCM PDU received */ + u8 tlv_seen:1; /* CCM PDU with TLV received */ + /* CCM PDU with unexpected sequence number received */ + u8 seq_unexp_seen:1; +}; + struct br_cfm_mep { /* list header of MEP instances */ struct hlist_node head; @@ -101,6 +128,8 @@ struct br_cfm_mep { unsigned long ccm_tx_end; struct delayed_work ccm_tx_dwork; u32 ccm_tx_snumber; + u32 ccm_rx_snumber; + struct br_cfm_mep_status status; bool rdi; struct rcu_head rcu; }; @@ -108,7 +137,10 @@ struct br_cfm_mep { struct br_cfm_peer_mep { struct hlist_node head; struct br_cfm_mep *mep; + struct delayed_work ccm_rx_dwork; u32 mepid; + struct br_cfm_cc_peer_status cc_status; + u32 ccm_rx_count_miss; struct rcu_head rcu; }; From patchwork Thu Oct 15 11:54:15 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Henrik Bjoernlund X-Patchwork-Id: 11839101 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=-12.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,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 86A86C433E7 for ; Thu, 15 Oct 2020 11:57:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1D363218AC for ; Thu, 15 Oct 2020 11:57:55 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=microchip.com header.i=@microchip.com header.b="VdWvU/Dh" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730356AbgJOL5w (ORCPT ); Thu, 15 Oct 2020 07:57:52 -0400 Received: from esa2.microchip.iphmx.com ([68.232.149.84]:1160 "EHLO esa2.microchip.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728774AbgJOL4Z (ORCPT ); Thu, 15 Oct 2020 07:56:25 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1602762984; x=1634298984; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=JpNhmDhlfKplqbvU64U2TuFt+f8oMiYzv+3aSWNOvrM=; b=VdWvU/DheD+N7F0FNBv9k/n+ZXBVw8em5ISTaZx5UsZxyZNpDKBfSMa/ tPP7d8ex/2Qlemfs3CefetMiuiT7Ia4YV1QOr72oH+chzfw3+BIeYVCUq aRUSb6abPRcqVo/XYGgBz67pzoxZ/cab0G10B4kHhPM51ckPlo603bQ0x pY3J6U37bo5N6hcmc5w8RPnx6IVx+Uq7Z2SZTwYdVwBKJ64YUyVcz3KAb ZKDLLu6jneEPaxSm2Y0iWoTew6c2MnSGv1iW6j0hog1lFVz5LL+8uXJWA 55X8RF/rmWEa6ER5IdADMCwSPjOW6bRcaYFWAFj3Ra1ttRDGUlc5lbRU4 w==; IronPort-SDR: iv68j1/pwGJbIYQap2WSXSS8lRQ98QoUzHCWl0GMDKvC9Nj92FvJHnjjKsZOAaRIyK/xomz1c7 rsaENMq+8FoN+06wvHK3ZI3BYHmBKQHT3aPK9ZIYa/evznD4Gwqs4CvmX68nrHzE6XzGWGwTtS LPl3+2pTbJ67K/W1XAJTvOTxHn1zoe3hfh6QXNlVFNPw5G/xJxR8ZTM0HoNwp5EKXz+Iyek5gb Sbn4P0qKWPqqJwkKHFBYWNt5O86+Ln3w3Vad2FJwkmx+cSbkA/Fr/0PBeUfDToGJq9m87C26nJ HnU= X-IronPort-AV: E=Sophos;i="5.77,378,1596524400"; d="scan'208";a="92709655" Received: from smtpout.microchip.com (HELO email.microchip.com) ([198.175.253.82]) by esa2.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 15 Oct 2020 04:56:23 -0700 Received: from chn-vm-ex03.mchp-main.com (10.10.85.151) by chn-vm-ex03.mchp-main.com (10.10.85.151) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1979.3; Thu, 15 Oct 2020 04:56:23 -0700 Received: from soft-test08.microsemi.net (10.10.115.15) by chn-vm-ex03.mchp-main.com (10.10.85.151) with Microsoft SMTP Server id 15.1.1979.3 via Frontend Transport; Thu, 15 Oct 2020 04:56:21 -0700 From: Henrik Bjoernlund To: , , , , , , , , , CC: Henrik Bjoernlund , Horatiu Vultur Subject: [PATCH net-next v6 07/10] bridge: cfm: Netlink SET configuration Interface. Date: Thu, 15 Oct 2020 11:54:15 +0000 Message-ID: <20201015115418.2711454-8-henrik.bjoernlund@microchip.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20201015115418.2711454-1-henrik.bjoernlund@microchip.com> References: <20201015115418.2711454-1-henrik.bjoernlund@microchip.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org This is the implementation of CFM netlink configuration set information interface. Add new nested netlink attributes. These attributes are used by the user space to create/delete/configure CFM instances. SETLINK: IFLA_BRIDGE_CFM: Indicate that the following attributes are CFM. IFLA_BRIDGE_CFM_MEP_CREATE: This indicate that a MEP instance must be created. IFLA_BRIDGE_CFM_MEP_DELETE: This indicate that a MEP instance must be deleted. IFLA_BRIDGE_CFM_MEP_CONFIG: This indicate that a MEP instance must be configured. IFLA_BRIDGE_CFM_CC_CONFIG: This indicate that a MEP instance Continuity Check (CC) functionality must be configured. IFLA_BRIDGE_CFM_CC_PEER_MEP_ADD: This indicate that a CC Peer MEP must be added. IFLA_BRIDGE_CFM_CC_PEER_MEP_REMOVE: This indicate that a CC Peer MEP must be removed. IFLA_BRIDGE_CFM_CC_CCM_TX: This indicate that the CC transmitted CCM PDU must be configured. IFLA_BRIDGE_CFM_CC_RDI: This indicate that the CC transmitted CCM PDU RDI must be configured. CFM nested attribute has the following attributes in next level. SETLINK RTEXT_FILTER_CFM_CONFIG: IFLA_BRIDGE_CFM_MEP_CREATE_INSTANCE: The created MEP instance number. The type is u32. IFLA_BRIDGE_CFM_MEP_CREATE_DOMAIN: The created MEP domain. The type is u32 (br_cfm_domain). It must be BR_CFM_PORT. This means that CFM frames are transmitted and received directly on the port - untagged. Not in a VLAN. IFLA_BRIDGE_CFM_MEP_CREATE_DIRECTION: The created MEP direction. The type is u32 (br_cfm_mep_direction). It must be BR_CFM_MEP_DIRECTION_DOWN. This means that CFM frames are transmitted and received on the port. Not in the bridge. IFLA_BRIDGE_CFM_MEP_CREATE_IFINDEX: The created MEP residence port ifindex. The type is u32 (ifindex). IFLA_BRIDGE_CFM_MEP_DELETE_INSTANCE: The deleted MEP instance number. The type is u32. IFLA_BRIDGE_CFM_MEP_CONFIG_INSTANCE: The configured MEP instance number. The type is u32. IFLA_BRIDGE_CFM_MEP_CONFIG_UNICAST_MAC: The configured MEP unicast MAC address. The type is 6*u8 (array). This is used as SMAC in all transmitted CFM frames. IFLA_BRIDGE_CFM_MEP_CONFIG_MDLEVEL: The configured MEP unicast MD level. The type is u32. It must be in the range 1-7. No CFM frames are passing through this MEP on lower levels. IFLA_BRIDGE_CFM_MEP_CONFIG_MEPID: The configured MEP ID. The type is u32. It must be in the range 0-0x1FFF. This MEP ID is inserted in any transmitted CCM frame. IFLA_BRIDGE_CFM_CC_CONFIG_INSTANCE: The configured MEP instance number. The type is u32. IFLA_BRIDGE_CFM_CC_CONFIG_ENABLE: The Continuity Check (CC) functionality is enabled or disabled. The type is u32 (bool). IFLA_BRIDGE_CFM_CC_CONFIG_EXP_INTERVAL: The CC expected receive interval of CCM frames. The type is u32 (br_cfm_ccm_interval). This is also the transmission interval of CCM frames when enabled. IFLA_BRIDGE_CFM_CC_CONFIG_EXP_MAID: The CC expected receive MAID in CCM frames. The type is CFM_MAID_LENGTH*u8. This is MAID is also inserted in transmitted CCM frames. IFLA_BRIDGE_CFM_CC_PEER_MEP_INSTANCE: The configured MEP instance number. The type is u32. IFLA_BRIDGE_CFM_CC_PEER_MEPID: The CC Peer MEP ID added. The type is u32. When a Peer MEP ID is added and CC is enabled it is expected to receive CCM frames from that Peer MEP. IFLA_BRIDGE_CFM_CC_RDI_INSTANCE: The configured MEP instance number. The type is u32. IFLA_BRIDGE_CFM_CC_RDI_RDI: The RDI that is inserted in transmitted CCM PDU. The type is u32 (bool). IFLA_BRIDGE_CFM_CC_CCM_TX_INSTANCE: The configured MEP instance number. The type is u32. IFLA_BRIDGE_CFM_CC_CCM_TX_DMAC: The transmitted CCM frame destination MAC address. The type is 6*u8 (array). This is used as DMAC in all transmitted CFM frames. IFLA_BRIDGE_CFM_CC_CCM_TX_SEQ_NO_UPDATE: The transmitted CCM frame update (increment) of sequence number is enabled or disabled. The type is u32 (bool). IFLA_BRIDGE_CFM_CC_CCM_TX_PERIOD: The period of time where CCM frame are transmitted. The type is u32. The time is given in seconds. SETLINK IFLA_BRIDGE_CFM_CC_CCM_TX must be done before timeout to keep transmission alive. When period is zero any ongoing CCM frame transmission will be stopped. IFLA_BRIDGE_CFM_CC_CCM_TX_IF_TLV: The transmitted CCM frame update with Interface Status TLV is enabled or disabled. The type is u32 (bool). IFLA_BRIDGE_CFM_CC_CCM_TX_IF_TLV_VALUE: The transmitted Interface Status TLV value field. The type is u8. IFLA_BRIDGE_CFM_CC_CCM_TX_PORT_TLV: The transmitted CCM frame update with Port Status TLV is enabled or disabled. The type is u32 (bool). IFLA_BRIDGE_CFM_CC_CCM_TX_PORT_TLV_VALUE: The transmitted Port Status TLV value field. The type is u8. Signed-off-by: Henrik Bjoernlund Reviewed-by: Horatiu Vultur Acked-by: Nikolay Aleksandrov --- include/uapi/linux/if_bridge.h | 90 +++++++ include/uapi/linux/rtnetlink.h | 1 + net/bridge/Makefile | 2 +- net/bridge/br_cfm.c | 23 +- net/bridge/br_cfm_netlink.c | 456 +++++++++++++++++++++++++++++++++ net/bridge/br_netlink.c | 5 + net/bridge/br_private.h | 17 +- 7 files changed, 574 insertions(+), 20 deletions(-) create mode 100644 net/bridge/br_cfm_netlink.c diff --git a/include/uapi/linux/if_bridge.h b/include/uapi/linux/if_bridge.h index 4c687686aa8f..94cc9444d749 100644 --- a/include/uapi/linux/if_bridge.h +++ b/include/uapi/linux/if_bridge.h @@ -121,6 +121,7 @@ enum { IFLA_BRIDGE_VLAN_INFO, IFLA_BRIDGE_VLAN_TUNNEL_INFO, IFLA_BRIDGE_MRP, + IFLA_BRIDGE_CFM, __IFLA_BRIDGE_MAX, }; #define IFLA_BRIDGE_MAX (__IFLA_BRIDGE_MAX - 1) @@ -328,6 +329,95 @@ struct br_mrp_start_in_test { __u16 in_id; }; +enum { + IFLA_BRIDGE_CFM_UNSPEC, + IFLA_BRIDGE_CFM_MEP_CREATE, + IFLA_BRIDGE_CFM_MEP_DELETE, + IFLA_BRIDGE_CFM_MEP_CONFIG, + IFLA_BRIDGE_CFM_CC_CONFIG, + IFLA_BRIDGE_CFM_CC_PEER_MEP_ADD, + IFLA_BRIDGE_CFM_CC_PEER_MEP_REMOVE, + IFLA_BRIDGE_CFM_CC_RDI, + IFLA_BRIDGE_CFM_CC_CCM_TX, + __IFLA_BRIDGE_CFM_MAX, +}; + +#define IFLA_BRIDGE_CFM_MAX (__IFLA_BRIDGE_CFM_MAX - 1) + +enum { + IFLA_BRIDGE_CFM_MEP_CREATE_UNSPEC, + IFLA_BRIDGE_CFM_MEP_CREATE_INSTANCE, + IFLA_BRIDGE_CFM_MEP_CREATE_DOMAIN, + IFLA_BRIDGE_CFM_MEP_CREATE_DIRECTION, + IFLA_BRIDGE_CFM_MEP_CREATE_IFINDEX, + __IFLA_BRIDGE_CFM_MEP_CREATE_MAX, +}; + +#define IFLA_BRIDGE_CFM_MEP_CREATE_MAX (__IFLA_BRIDGE_CFM_MEP_CREATE_MAX - 1) + +enum { + IFLA_BRIDGE_CFM_MEP_DELETE_UNSPEC, + IFLA_BRIDGE_CFM_MEP_DELETE_INSTANCE, + __IFLA_BRIDGE_CFM_MEP_DELETE_MAX, +}; + +#define IFLA_BRIDGE_CFM_MEP_DELETE_MAX (__IFLA_BRIDGE_CFM_MEP_DELETE_MAX - 1) + +enum { + IFLA_BRIDGE_CFM_MEP_CONFIG_UNSPEC, + IFLA_BRIDGE_CFM_MEP_CONFIG_INSTANCE, + IFLA_BRIDGE_CFM_MEP_CONFIG_UNICAST_MAC, + IFLA_BRIDGE_CFM_MEP_CONFIG_MDLEVEL, + IFLA_BRIDGE_CFM_MEP_CONFIG_MEPID, + __IFLA_BRIDGE_CFM_MEP_CONFIG_MAX, +}; + +#define IFLA_BRIDGE_CFM_MEP_CONFIG_MAX (__IFLA_BRIDGE_CFM_MEP_CONFIG_MAX - 1) + +enum { + IFLA_BRIDGE_CFM_CC_CONFIG_UNSPEC, + IFLA_BRIDGE_CFM_CC_CONFIG_INSTANCE, + IFLA_BRIDGE_CFM_CC_CONFIG_ENABLE, + IFLA_BRIDGE_CFM_CC_CONFIG_EXP_INTERVAL, + IFLA_BRIDGE_CFM_CC_CONFIG_EXP_MAID, + __IFLA_BRIDGE_CFM_CC_CONFIG_MAX, +}; + +#define IFLA_BRIDGE_CFM_CC_CONFIG_MAX (__IFLA_BRIDGE_CFM_CC_CONFIG_MAX - 1) + +enum { + IFLA_BRIDGE_CFM_CC_PEER_MEP_UNSPEC, + IFLA_BRIDGE_CFM_CC_PEER_MEP_INSTANCE, + IFLA_BRIDGE_CFM_CC_PEER_MEPID, + __IFLA_BRIDGE_CFM_CC_PEER_MEP_MAX, +}; + +#define IFLA_BRIDGE_CFM_CC_PEER_MEP_MAX (__IFLA_BRIDGE_CFM_CC_PEER_MEP_MAX - 1) + +enum { + IFLA_BRIDGE_CFM_CC_RDI_UNSPEC, + IFLA_BRIDGE_CFM_CC_RDI_INSTANCE, + IFLA_BRIDGE_CFM_CC_RDI_RDI, + __IFLA_BRIDGE_CFM_CC_RDI_MAX, +}; + +#define IFLA_BRIDGE_CFM_CC_RDI_MAX (__IFLA_BRIDGE_CFM_CC_RDI_MAX - 1) + +enum { + IFLA_BRIDGE_CFM_CC_CCM_TX_UNSPEC, + IFLA_BRIDGE_CFM_CC_CCM_TX_INSTANCE, + IFLA_BRIDGE_CFM_CC_CCM_TX_DMAC, + IFLA_BRIDGE_CFM_CC_CCM_TX_SEQ_NO_UPDATE, + IFLA_BRIDGE_CFM_CC_CCM_TX_PERIOD, + IFLA_BRIDGE_CFM_CC_CCM_TX_IF_TLV, + IFLA_BRIDGE_CFM_CC_CCM_TX_IF_TLV_VALUE, + IFLA_BRIDGE_CFM_CC_CCM_TX_PORT_TLV, + IFLA_BRIDGE_CFM_CC_CCM_TX_PORT_TLV_VALUE, + __IFLA_BRIDGE_CFM_CC_CCM_TX_MAX, +}; + +#define IFLA_BRIDGE_CFM_CC_CCM_TX_MAX (__IFLA_BRIDGE_CFM_CC_CCM_TX_MAX - 1) + struct bridge_stp_xstats { __u64 transition_blk; __u64 transition_fwd; diff --git a/include/uapi/linux/rtnetlink.h b/include/uapi/linux/rtnetlink.h index 9b814c92de12..ffc9ca1f2bdb 100644 --- a/include/uapi/linux/rtnetlink.h +++ b/include/uapi/linux/rtnetlink.h @@ -779,6 +779,7 @@ enum { #define RTEXT_FILTER_BRVLAN_COMPRESSED (1 << 2) #define RTEXT_FILTER_SKIP_STATS (1 << 3) #define RTEXT_FILTER_MRP (1 << 4) +#define RTEXT_FILTER_CFM_CONFIG (1 << 5) /* End of information exported to user level */ diff --git a/net/bridge/Makefile b/net/bridge/Makefile index ddc0a9192348..4702702a74d3 100644 --- a/net/bridge/Makefile +++ b/net/bridge/Makefile @@ -28,4 +28,4 @@ obj-$(CONFIG_NETFILTER) += netfilter/ bridge-$(CONFIG_BRIDGE_MRP) += br_mrp_switchdev.o br_mrp.o br_mrp_netlink.o -bridge-$(CONFIG_BRIDGE_CFM) += br_cfm.o +bridge-$(CONFIG_BRIDGE_CFM) += br_cfm.o br_cfm_netlink.o diff --git a/net/bridge/br_cfm.c b/net/bridge/br_cfm.c index d63b705feb48..3912fedfd289 100644 --- a/net/bridge/br_cfm.c +++ b/net/bridge/br_cfm.c @@ -602,18 +602,6 @@ int br_cfm_mep_config_set(struct net_bridge *br, ASSERT_RTNL(); - if (config->mdlevel > 7) { - NL_SET_ERR_MSG_MOD(extack, - "MD level is invalid"); - return -EINVAL; - } - /* The MEP-ID is a 13 bit field in the CCM PDU identifying the MEP */ - if (config->mepid > 0x1FFF) { - NL_SET_ERR_MSG_MOD(extack, - "MEP-ID is invalid"); - return -EINVAL; - } - mep = br_mep_find(br, instance); if (!mep) { NL_SET_ERR_MSG_MOD(extack, @@ -679,12 +667,6 @@ int br_cfm_cc_peer_mep_add(struct net_bridge *br, const u32 instance, "MEP instance does not exists"); return -ENOENT; } - /* The MEP-ID is a 13 bit field in the CCM PDU identifying the MEP */ - if (mepid > 0x1FFF) { - NL_SET_ERR_MSG_MOD(extack, - "MEP-ID is invalid"); - return -EINVAL; - } peer_mep = br_peer_mep_find(mep, mepid); if (peer_mep) { @@ -817,6 +799,11 @@ int br_cfm_cc_ccm_tx(struct net_bridge *br, const u32 instance, return 0; } +bool br_cfm_created(struct net_bridge *br) +{ + return !hlist_empty(&br->mep_list); +} + /* Deletes the CFM instances on a specific bridge port */ void br_cfm_port_del(struct net_bridge *br, struct net_bridge_port *port) diff --git a/net/bridge/br_cfm_netlink.c b/net/bridge/br_cfm_netlink.c new file mode 100644 index 000000000000..8a7545ab0014 --- /dev/null +++ b/net/bridge/br_cfm_netlink.c @@ -0,0 +1,456 @@ +// SPDX-License-Identifier: GPL-2.0-or-later + +#include + +#include "br_private.h" +#include "br_private_cfm.h" + +static const struct nla_policy +br_cfm_mep_create_policy[IFLA_BRIDGE_CFM_MEP_CREATE_MAX + 1] = { + [IFLA_BRIDGE_CFM_MEP_CREATE_UNSPEC] = { .type = NLA_REJECT }, + [IFLA_BRIDGE_CFM_MEP_CREATE_INSTANCE] = { .type = NLA_U32 }, + [IFLA_BRIDGE_CFM_MEP_CREATE_DOMAIN] = { .type = NLA_U32 }, + [IFLA_BRIDGE_CFM_MEP_CREATE_DIRECTION] = { .type = NLA_U32 }, + [IFLA_BRIDGE_CFM_MEP_CREATE_IFINDEX] = { .type = NLA_U32 }, +}; + +static const struct nla_policy +br_cfm_mep_delete_policy[IFLA_BRIDGE_CFM_MEP_DELETE_MAX + 1] = { + [IFLA_BRIDGE_CFM_MEP_DELETE_UNSPEC] = { .type = NLA_REJECT }, + [IFLA_BRIDGE_CFM_MEP_DELETE_INSTANCE] = { .type = NLA_U32 }, +}; + +static const struct nla_policy +br_cfm_mep_config_policy[IFLA_BRIDGE_CFM_MEP_CONFIG_MAX + 1] = { + [IFLA_BRIDGE_CFM_MEP_CONFIG_UNSPEC] = { .type = NLA_REJECT }, + [IFLA_BRIDGE_CFM_MEP_CONFIG_INSTANCE] = { .type = NLA_U32 }, + [IFLA_BRIDGE_CFM_MEP_CONFIG_UNICAST_MAC] = NLA_POLICY_ETH_ADDR, + [IFLA_BRIDGE_CFM_MEP_CONFIG_MDLEVEL] = { + .type = NLA_U32, .validation_type = NLA_VALIDATE_MAX, .max = 7 }, + [IFLA_BRIDGE_CFM_MEP_CONFIG_MEPID] = { + .type = NLA_U32, .validation_type = NLA_VALIDATE_MAX, .max = 0x1FFF }, +}; + +static const struct nla_policy +br_cfm_cc_config_policy[IFLA_BRIDGE_CFM_CC_CONFIG_MAX + 1] = { + [IFLA_BRIDGE_CFM_CC_CONFIG_UNSPEC] = { .type = NLA_REJECT }, + [IFLA_BRIDGE_CFM_CC_CONFIG_INSTANCE] = { .type = NLA_U32 }, + [IFLA_BRIDGE_CFM_CC_CONFIG_ENABLE] = { .type = NLA_U32 }, + [IFLA_BRIDGE_CFM_CC_CONFIG_EXP_INTERVAL] = { .type = NLA_U32 }, + [IFLA_BRIDGE_CFM_CC_CONFIG_EXP_MAID] = { + .type = NLA_BINARY, .len = CFM_MAID_LENGTH }, +}; + +static const struct nla_policy +br_cfm_cc_peer_mep_policy[IFLA_BRIDGE_CFM_CC_PEER_MEP_MAX + 1] = { + [IFLA_BRIDGE_CFM_CC_PEER_MEP_UNSPEC] = { .type = NLA_REJECT }, + [IFLA_BRIDGE_CFM_CC_PEER_MEP_INSTANCE] = { .type = NLA_U32 }, + [IFLA_BRIDGE_CFM_CC_PEER_MEPID] = { + .type = NLA_U32, .validation_type = NLA_VALIDATE_MAX, .max = 0x1FFF }, +}; + +static const struct nla_policy +br_cfm_cc_rdi_policy[IFLA_BRIDGE_CFM_CC_RDI_MAX + 1] = { + [IFLA_BRIDGE_CFM_CC_RDI_UNSPEC] = { .type = NLA_REJECT }, + [IFLA_BRIDGE_CFM_CC_RDI_INSTANCE] = { .type = NLA_U32 }, + [IFLA_BRIDGE_CFM_CC_RDI_RDI] = { .type = NLA_U32 }, +}; + +static const struct nla_policy +br_cfm_cc_ccm_tx_policy[IFLA_BRIDGE_CFM_CC_CCM_TX_MAX + 1] = { + [IFLA_BRIDGE_CFM_CC_CCM_TX_UNSPEC] = { .type = NLA_REJECT }, + [IFLA_BRIDGE_CFM_CC_CCM_TX_INSTANCE] = { .type = NLA_U32 }, + [IFLA_BRIDGE_CFM_CC_CCM_TX_DMAC] = NLA_POLICY_ETH_ADDR, + [IFLA_BRIDGE_CFM_CC_CCM_TX_SEQ_NO_UPDATE] = { .type = NLA_U32 }, + [IFLA_BRIDGE_CFM_CC_CCM_TX_PERIOD] = { .type = NLA_U32 }, + [IFLA_BRIDGE_CFM_CC_CCM_TX_IF_TLV] = { .type = NLA_U32 }, + [IFLA_BRIDGE_CFM_CC_CCM_TX_IF_TLV_VALUE] = { .type = NLA_U8 }, + [IFLA_BRIDGE_CFM_CC_CCM_TX_PORT_TLV] = { .type = NLA_U32 }, + [IFLA_BRIDGE_CFM_CC_CCM_TX_PORT_TLV_VALUE] = { .type = NLA_U8 }, +}; + +static const struct nla_policy +br_cfm_policy[IFLA_BRIDGE_CFM_MAX + 1] = { + [IFLA_BRIDGE_CFM_UNSPEC] = { .type = NLA_REJECT }, + [IFLA_BRIDGE_CFM_MEP_CREATE] = + NLA_POLICY_NESTED(br_cfm_mep_create_policy), + [IFLA_BRIDGE_CFM_MEP_DELETE] = + NLA_POLICY_NESTED(br_cfm_mep_delete_policy), + [IFLA_BRIDGE_CFM_MEP_CONFIG] = + NLA_POLICY_NESTED(br_cfm_mep_config_policy), + [IFLA_BRIDGE_CFM_CC_CONFIG] = + NLA_POLICY_NESTED(br_cfm_cc_config_policy), + [IFLA_BRIDGE_CFM_CC_PEER_MEP_ADD] = + NLA_POLICY_NESTED(br_cfm_cc_peer_mep_policy), + [IFLA_BRIDGE_CFM_CC_PEER_MEP_REMOVE] = + NLA_POLICY_NESTED(br_cfm_cc_peer_mep_policy), + [IFLA_BRIDGE_CFM_CC_RDI] = + NLA_POLICY_NESTED(br_cfm_cc_rdi_policy), + [IFLA_BRIDGE_CFM_CC_CCM_TX] = + NLA_POLICY_NESTED(br_cfm_cc_ccm_tx_policy), +}; + +static int br_mep_create_parse(struct net_bridge *br, struct nlattr *attr, + struct netlink_ext_ack *extack) +{ + struct nlattr *tb[IFLA_BRIDGE_CFM_MEP_CREATE_MAX + 1]; + struct br_cfm_mep_create create; + u32 instance; + int err; + + err = nla_parse_nested(tb, IFLA_BRIDGE_CFM_MEP_CREATE_MAX, attr, + br_cfm_mep_create_policy, extack); + if (err) + return err; + + if (!tb[IFLA_BRIDGE_CFM_MEP_CREATE_INSTANCE]) { + NL_SET_ERR_MSG_MOD(extack, "Missing INSTANCE attribute"); + return -EINVAL; + } + if (!tb[IFLA_BRIDGE_CFM_MEP_CREATE_DOMAIN]) { + NL_SET_ERR_MSG_MOD(extack, "Missing DOMAIN attribute"); + return -EINVAL; + } + if (!tb[IFLA_BRIDGE_CFM_MEP_CREATE_DIRECTION]) { + NL_SET_ERR_MSG_MOD(extack, "Missing DIRECTION attribute"); + return -EINVAL; + } + if (!tb[IFLA_BRIDGE_CFM_MEP_CREATE_IFINDEX]) { + NL_SET_ERR_MSG_MOD(extack, "Missing IFINDEX attribute"); + return -EINVAL; + } + + memset(&create, 0, sizeof(create)); + + instance = nla_get_u32(tb[IFLA_BRIDGE_CFM_MEP_CREATE_INSTANCE]); + create.domain = nla_get_u32(tb[IFLA_BRIDGE_CFM_MEP_CREATE_DOMAIN]); + create.direction = nla_get_u32(tb[IFLA_BRIDGE_CFM_MEP_CREATE_DIRECTION]); + create.ifindex = nla_get_u32(tb[IFLA_BRIDGE_CFM_MEP_CREATE_IFINDEX]); + + return br_cfm_mep_create(br, instance, &create, extack); +} + +static int br_mep_delete_parse(struct net_bridge *br, struct nlattr *attr, + struct netlink_ext_ack *extack) +{ + struct nlattr *tb[IFLA_BRIDGE_CFM_MEP_DELETE_MAX + 1]; + u32 instance; + int err; + + err = nla_parse_nested(tb, IFLA_BRIDGE_CFM_MEP_DELETE_MAX, attr, + br_cfm_mep_delete_policy, extack); + if (err) + return err; + + if (!tb[IFLA_BRIDGE_CFM_MEP_DELETE_INSTANCE]) { + NL_SET_ERR_MSG_MOD(extack, + "Missing INSTANCE attribute"); + return -EINVAL; + } + + instance = nla_get_u32(tb[IFLA_BRIDGE_CFM_MEP_DELETE_INSTANCE]); + + return br_cfm_mep_delete(br, instance, extack); +} + +static int br_mep_config_parse(struct net_bridge *br, struct nlattr *attr, + struct netlink_ext_ack *extack) +{ + struct nlattr *tb[IFLA_BRIDGE_CFM_MEP_CONFIG_MAX + 1]; + struct br_cfm_mep_config config; + u32 instance; + int err; + + err = nla_parse_nested(tb, IFLA_BRIDGE_CFM_MEP_CONFIG_MAX, attr, + br_cfm_mep_config_policy, extack); + if (err) + return err; + + if (!tb[IFLA_BRIDGE_CFM_MEP_CONFIG_INSTANCE]) { + NL_SET_ERR_MSG_MOD(extack, "Missing INSTANCE attribute"); + return -EINVAL; + } + if (!tb[IFLA_BRIDGE_CFM_MEP_CONFIG_UNICAST_MAC]) { + NL_SET_ERR_MSG_MOD(extack, "Missing UNICAST_MAC attribute"); + return -EINVAL; + } + if (!tb[IFLA_BRIDGE_CFM_MEP_CONFIG_MDLEVEL]) { + NL_SET_ERR_MSG_MOD(extack, "Missing MDLEVEL attribute"); + return -EINVAL; + } + if (!tb[IFLA_BRIDGE_CFM_MEP_CONFIG_MEPID]) { + NL_SET_ERR_MSG_MOD(extack, "Missing MEPID attribute"); + return -EINVAL; + } + + memset(&config, 0, sizeof(config)); + + instance = nla_get_u32(tb[IFLA_BRIDGE_CFM_MEP_CONFIG_INSTANCE]); + nla_memcpy(&config.unicast_mac.addr, + tb[IFLA_BRIDGE_CFM_MEP_CONFIG_UNICAST_MAC], + sizeof(config.unicast_mac.addr)); + config.mdlevel = nla_get_u32(tb[IFLA_BRIDGE_CFM_MEP_CONFIG_MDLEVEL]); + config.mepid = nla_get_u32(tb[IFLA_BRIDGE_CFM_MEP_CONFIG_MEPID]); + + return br_cfm_mep_config_set(br, instance, &config, extack); +} + +static int br_cc_config_parse(struct net_bridge *br, struct nlattr *attr, + struct netlink_ext_ack *extack) +{ + struct nlattr *tb[IFLA_BRIDGE_CFM_CC_CONFIG_MAX + 1]; + struct br_cfm_cc_config config; + u32 instance; + int err; + + err = nla_parse_nested(tb, IFLA_BRIDGE_CFM_CC_CONFIG_MAX, attr, + br_cfm_cc_config_policy, extack); + if (err) + return err; + + if (!tb[IFLA_BRIDGE_CFM_CC_CONFIG_INSTANCE]) { + NL_SET_ERR_MSG_MOD(extack, "Missing INSTANCE attribute"); + return -EINVAL; + } + if (!tb[IFLA_BRIDGE_CFM_CC_CONFIG_ENABLE]) { + NL_SET_ERR_MSG_MOD(extack, "Missing ENABLE attribute"); + return -EINVAL; + } + if (!tb[IFLA_BRIDGE_CFM_CC_CONFIG_EXP_INTERVAL]) { + NL_SET_ERR_MSG_MOD(extack, "Missing INTERVAL attribute"); + return -EINVAL; + } + if (!tb[IFLA_BRIDGE_CFM_CC_CONFIG_EXP_MAID]) { + NL_SET_ERR_MSG_MOD(extack, "Missing MAID attribute"); + return -EINVAL; + } + + memset(&config, 0, sizeof(config)); + + instance = nla_get_u32(tb[IFLA_BRIDGE_CFM_CC_CONFIG_INSTANCE]); + config.enable = nla_get_u32(tb[IFLA_BRIDGE_CFM_CC_CONFIG_ENABLE]); + config.exp_interval = nla_get_u32(tb[IFLA_BRIDGE_CFM_CC_CONFIG_EXP_INTERVAL]); + nla_memcpy(&config.exp_maid.data, tb[IFLA_BRIDGE_CFM_CC_CONFIG_EXP_MAID], + sizeof(config.exp_maid.data)); + + return br_cfm_cc_config_set(br, instance, &config, extack); +} + +static int br_cc_peer_mep_add_parse(struct net_bridge *br, struct nlattr *attr, + struct netlink_ext_ack *extack) +{ + struct nlattr *tb[IFLA_BRIDGE_CFM_CC_PEER_MEP_MAX + 1]; + u32 instance, peer_mep_id; + int err; + + err = nla_parse_nested(tb, IFLA_BRIDGE_CFM_CC_PEER_MEP_MAX, attr, + br_cfm_cc_peer_mep_policy, extack); + if (err) + return err; + + if (!tb[IFLA_BRIDGE_CFM_CC_PEER_MEP_INSTANCE]) { + NL_SET_ERR_MSG_MOD(extack, "Missing INSTANCE attribute"); + return -EINVAL; + } + if (!tb[IFLA_BRIDGE_CFM_CC_PEER_MEPID]) { + NL_SET_ERR_MSG_MOD(extack, "Missing PEER_MEP_ID attribute"); + return -EINVAL; + } + + instance = nla_get_u32(tb[IFLA_BRIDGE_CFM_CC_PEER_MEP_INSTANCE]); + peer_mep_id = nla_get_u32(tb[IFLA_BRIDGE_CFM_CC_PEER_MEPID]); + + return br_cfm_cc_peer_mep_add(br, instance, peer_mep_id, extack); +} + +static int br_cc_peer_mep_remove_parse(struct net_bridge *br, struct nlattr *attr, + struct netlink_ext_ack *extack) +{ + struct nlattr *tb[IFLA_BRIDGE_CFM_CC_PEER_MEP_MAX + 1]; + u32 instance, peer_mep_id; + int err; + + err = nla_parse_nested(tb, IFLA_BRIDGE_CFM_CC_PEER_MEP_MAX, attr, + br_cfm_cc_peer_mep_policy, extack); + if (err) + return err; + + if (!tb[IFLA_BRIDGE_CFM_CC_PEER_MEP_INSTANCE]) { + NL_SET_ERR_MSG_MOD(extack, "Missing INSTANCE attribute"); + return -EINVAL; + } + if (!tb[IFLA_BRIDGE_CFM_CC_PEER_MEPID]) { + NL_SET_ERR_MSG_MOD(extack, "Missing PEER_MEP_ID attribute"); + return -EINVAL; + } + + instance = nla_get_u32(tb[IFLA_BRIDGE_CFM_CC_PEER_MEP_INSTANCE]); + peer_mep_id = nla_get_u32(tb[IFLA_BRIDGE_CFM_CC_PEER_MEPID]); + + return br_cfm_cc_peer_mep_remove(br, instance, peer_mep_id, extack); +} + +static int br_cc_rdi_parse(struct net_bridge *br, struct nlattr *attr, + struct netlink_ext_ack *extack) +{ + struct nlattr *tb[IFLA_BRIDGE_CFM_CC_RDI_MAX + 1]; + u32 instance, rdi; + int err; + + err = nla_parse_nested(tb, IFLA_BRIDGE_CFM_CC_RDI_MAX, attr, + br_cfm_cc_rdi_policy, extack); + if (err) + return err; + + if (!tb[IFLA_BRIDGE_CFM_CC_RDI_INSTANCE]) { + NL_SET_ERR_MSG_MOD(extack, "Missing INSTANCE attribute"); + return -EINVAL; + } + if (!tb[IFLA_BRIDGE_CFM_CC_RDI_RDI]) { + NL_SET_ERR_MSG_MOD(extack, "Missing RDI attribute"); + return -EINVAL; + } + + instance = nla_get_u32(tb[IFLA_BRIDGE_CFM_CC_RDI_INSTANCE]); + rdi = nla_get_u32(tb[IFLA_BRIDGE_CFM_CC_RDI_RDI]); + + return br_cfm_cc_rdi_set(br, instance, rdi, extack); +} + +static int br_cc_ccm_tx_parse(struct net_bridge *br, struct nlattr *attr, + struct netlink_ext_ack *extack) +{ + struct nlattr *tb[IFLA_BRIDGE_CFM_CC_CCM_TX_MAX + 1]; + struct br_cfm_cc_ccm_tx_info tx_info; + u32 instance; + int err; + + err = nla_parse_nested(tb, IFLA_BRIDGE_CFM_CC_CCM_TX_MAX, attr, + br_cfm_cc_ccm_tx_policy, extack); + if (err) + return err; + + if (!tb[IFLA_BRIDGE_CFM_CC_CCM_TX_INSTANCE]) { + NL_SET_ERR_MSG_MOD(extack, "Missing INSTANCE attribute"); + return -EINVAL; + } + if (!tb[IFLA_BRIDGE_CFM_CC_CCM_TX_DMAC]) { + NL_SET_ERR_MSG_MOD(extack, "Missing DMAC attribute"); + return -EINVAL; + } + if (!tb[IFLA_BRIDGE_CFM_CC_CCM_TX_SEQ_NO_UPDATE]) { + NL_SET_ERR_MSG_MOD(extack, "Missing SEQ_NO_UPDATE attribute"); + return -EINVAL; + } + if (!tb[IFLA_BRIDGE_CFM_CC_CCM_TX_PERIOD]) { + NL_SET_ERR_MSG_MOD(extack, "Missing PERIOD attribute"); + return -EINVAL; + } + if (!tb[IFLA_BRIDGE_CFM_CC_CCM_TX_IF_TLV]) { + NL_SET_ERR_MSG_MOD(extack, "Missing IF_TLV attribute"); + return -EINVAL; + } + if (!tb[IFLA_BRIDGE_CFM_CC_CCM_TX_IF_TLV_VALUE]) { + NL_SET_ERR_MSG_MOD(extack, "Missing IF_TLV_VALUE attribute"); + return -EINVAL; + } + if (!tb[IFLA_BRIDGE_CFM_CC_CCM_TX_PORT_TLV]) { + NL_SET_ERR_MSG_MOD(extack, "Missing PORT_TLV attribute"); + return -EINVAL; + } + if (!tb[IFLA_BRIDGE_CFM_CC_CCM_TX_PORT_TLV_VALUE]) { + NL_SET_ERR_MSG_MOD(extack, "Missing PORT_TLV_VALUE attribute"); + return -EINVAL; + } + + memset(&tx_info, 0, sizeof(tx_info)); + + instance = nla_get_u32(tb[IFLA_BRIDGE_CFM_CC_RDI_INSTANCE]); + nla_memcpy(&tx_info.dmac.addr, + tb[IFLA_BRIDGE_CFM_CC_CCM_TX_DMAC], + sizeof(tx_info.dmac.addr)); + tx_info.seq_no_update = nla_get_u32(tb[IFLA_BRIDGE_CFM_CC_CCM_TX_SEQ_NO_UPDATE]); + tx_info.period = nla_get_u32(tb[IFLA_BRIDGE_CFM_CC_CCM_TX_PERIOD]); + tx_info.if_tlv = nla_get_u32(tb[IFLA_BRIDGE_CFM_CC_CCM_TX_IF_TLV]); + tx_info.if_tlv_value = nla_get_u8(tb[IFLA_BRIDGE_CFM_CC_CCM_TX_IF_TLV_VALUE]); + tx_info.port_tlv = nla_get_u32(tb[IFLA_BRIDGE_CFM_CC_CCM_TX_PORT_TLV]); + tx_info.port_tlv_value = nla_get_u8(tb[IFLA_BRIDGE_CFM_CC_CCM_TX_PORT_TLV_VALUE]); + + return br_cfm_cc_ccm_tx(br, instance, &tx_info, extack); +} + +int br_cfm_parse(struct net_bridge *br, struct net_bridge_port *p, + struct nlattr *attr, int cmd, struct netlink_ext_ack *extack) +{ + struct nlattr *tb[IFLA_BRIDGE_CFM_MAX + 1]; + int err; + + /* When this function is called for a port then the br pointer is + * invalid, therefor set the br to point correctly + */ + if (p) + br = p->br; + + err = nla_parse_nested(tb, IFLA_BRIDGE_CFM_MAX, attr, + br_cfm_policy, extack); + if (err) + return err; + + if (tb[IFLA_BRIDGE_CFM_MEP_CREATE]) { + err = br_mep_create_parse(br, tb[IFLA_BRIDGE_CFM_MEP_CREATE], + extack); + if (err) + return err; + } + + if (tb[IFLA_BRIDGE_CFM_MEP_DELETE]) { + err = br_mep_delete_parse(br, tb[IFLA_BRIDGE_CFM_MEP_DELETE], + extack); + if (err) + return err; + } + + if (tb[IFLA_BRIDGE_CFM_MEP_CONFIG]) { + err = br_mep_config_parse(br, tb[IFLA_BRIDGE_CFM_MEP_CONFIG], + extack); + if (err) + return err; + } + + if (tb[IFLA_BRIDGE_CFM_CC_CONFIG]) { + err = br_cc_config_parse(br, tb[IFLA_BRIDGE_CFM_CC_CONFIG], + extack); + if (err) + return err; + } + + if (tb[IFLA_BRIDGE_CFM_CC_PEER_MEP_ADD]) { + err = br_cc_peer_mep_add_parse(br, tb[IFLA_BRIDGE_CFM_CC_PEER_MEP_ADD], + extack); + if (err) + return err; + } + + if (tb[IFLA_BRIDGE_CFM_CC_PEER_MEP_REMOVE]) { + err = br_cc_peer_mep_remove_parse(br, tb[IFLA_BRIDGE_CFM_CC_PEER_MEP_REMOVE], + extack); + if (err) + return err; + } + + if (tb[IFLA_BRIDGE_CFM_CC_RDI]) { + err = br_cc_rdi_parse(br, tb[IFLA_BRIDGE_CFM_CC_RDI], + extack); + if (err) + return err; + } + + if (tb[IFLA_BRIDGE_CFM_CC_CCM_TX]) { + err = br_cc_ccm_tx_parse(br, tb[IFLA_BRIDGE_CFM_CC_CCM_TX], + extack); + if (err) + return err; + } + + return 0; +} diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c index 92d64abffa87..431ee2b06dc1 100644 --- a/net/bridge/br_netlink.c +++ b/net/bridge/br_netlink.c @@ -700,6 +700,11 @@ static int br_afspec(struct net_bridge *br, if (err) return err; break; + case IFLA_BRIDGE_CFM: + err = br_cfm_parse(br, p, attr, cmd, extack); + if (err) + return err; + break; } } diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h index f7c41380de4d..6a5db0553f19 100644 --- a/net/bridge/br_private.h +++ b/net/bridge/br_private.h @@ -1459,10 +1459,25 @@ static inline int br_mrp_fill_info(struct sk_buff *skb, struct net_bridge *br) #endif -/* br_mrp.c */ +/* br_cfm.c */ #if IS_ENABLED(CONFIG_BRIDGE_CFM) +int br_cfm_parse(struct net_bridge *br, struct net_bridge_port *p, + struct nlattr *attr, int cmd, struct netlink_ext_ack *extack); +bool br_cfm_created(struct net_bridge *br); void br_cfm_port_del(struct net_bridge *br, struct net_bridge_port *p); #else +static inline int br_cfm_parse(struct net_bridge *br, struct net_bridge_port *p, + struct nlattr *attr, int cmd, + struct netlink_ext_ack *extack) +{ + return -EOPNOTSUPP; +} + +static inline bool br_cfm_created(struct net_bridge *br) +{ + return false; +} + static inline void br_cfm_port_del(struct net_bridge *br, struct net_bridge_port *p) { From patchwork Thu Oct 15 11:54:16 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Henrik Bjoernlund X-Patchwork-Id: 11839117 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=-12.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,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 5F6B1C433DF for ; Thu, 15 Oct 2020 11:59:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E92F7218AC for ; Thu, 15 Oct 2020 11:59:05 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=microchip.com header.i=@microchip.com header.b="UaNJafHQ" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729745AbgJOL6i (ORCPT ); Thu, 15 Oct 2020 07:58:38 -0400 Received: from esa2.microchip.iphmx.com ([68.232.149.84]:1146 "EHLO esa2.microchip.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729842AbgJOL5D (ORCPT ); Thu, 15 Oct 2020 07:57:03 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1602763022; x=1634299022; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=LKSjoCTTlX0XhfYaa5NEiqBsICt3L/LABkna/t7tpS4=; b=UaNJafHQgbigFrY258auEBFhlEquYhcwShEZ2mAJiZkXh/um+yXDjLys m1ylALPWvlFsC0Ex47hJ5MWYxImL25LuomwkXXJJBxo5NTjRjf6RauvCM xO8i50O+IpHWtSg+TaTGll0Pf9OsK7CoGR9k5osBpyUYt7rnrQVP4GYrv xf9ntcc5nZ4wYfAfaGSDyQ6fd1iC7B84BlToFiG9pm4JfNxjKDFb+AqOA zcmF7X+eOw0O/DS4yqc0R13ROWXiY6utWz6rbQmMA+mbyHNP0TvLIPBJI DmPYXOcdyJSnbLG6SRm1VDAc56890NAptKMeDllAiV9dqmvZaDvk2IR/e Q==; IronPort-SDR: U58wT8sTMcKLTkieu3fTlAVvoDK3OB/sftnUenwtt6jv47svtEUq0HI6Q5StM/lEfwH4xJRXHg SmgbmTiFo2nc9tNTKlf4Q0h18AgSy9BPlZHWoPXMRIm1d0bkXWvinvJltgSXDWEwgzFlifGsOY LhnzE89sPof8S1huE90sOuOvfXper1eD9AgwpzvKFW+nAMoeQupvXots7YewN0O2qvlUQEl8KM 6wTajCFQQIOzQESeRBrMfhrmER+9qMN+IIJw1HQwwr2RRlXR5diAWREuFJMSXZIJ3QdZjoBXc4 M0Q= X-IronPort-AV: E=Sophos;i="5.77,378,1596524400"; d="scan'208";a="92709657" Received: from smtpout.microchip.com (HELO email.microchip.com) ([198.175.253.82]) by esa2.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 15 Oct 2020 04:56:26 -0700 Received: from chn-vm-ex03.mchp-main.com (10.10.85.151) by chn-vm-ex03.mchp-main.com (10.10.85.151) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1979.3; Thu, 15 Oct 2020 04:56:26 -0700 Received: from soft-test08.microsemi.net (10.10.115.15) by chn-vm-ex03.mchp-main.com (10.10.85.151) with Microsoft SMTP Server id 15.1.1979.3 via Frontend Transport; Thu, 15 Oct 2020 04:56:23 -0700 From: Henrik Bjoernlund To: , , , , , , , , , CC: Henrik Bjoernlund , Horatiu Vultur Subject: [PATCH net-next v6 08/10] bridge: cfm: Netlink GET configuration Interface. Date: Thu, 15 Oct 2020 11:54:16 +0000 Message-ID: <20201015115418.2711454-9-henrik.bjoernlund@microchip.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20201015115418.2711454-1-henrik.bjoernlund@microchip.com> References: <20201015115418.2711454-1-henrik.bjoernlund@microchip.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org This is the implementation of CFM netlink configuration get information interface. Add new nested netlink attributes. These attributes are used by the user space to get configuration information. GETLINK: Request filter RTEXT_FILTER_CFM_CONFIG: Indicating that CFM configuration information must be delivered. IFLA_BRIDGE_CFM: Points to the CFM information. IFLA_BRIDGE_CFM_MEP_CREATE_INFO: This indicate that MEP instance create parameters are following. IFLA_BRIDGE_CFM_MEP_CONFIG_INFO: This indicate that MEP instance config parameters are following. IFLA_BRIDGE_CFM_CC_CONFIG_INFO: This indicate that MEP instance CC functionality parameters are following. IFLA_BRIDGE_CFM_CC_RDI_INFO: This indicate that CC transmitted CCM PDU RDI parameters are following. IFLA_BRIDGE_CFM_CC_CCM_TX_INFO: This indicate that CC transmitted CCM PDU parameters are following. IFLA_BRIDGE_CFM_CC_PEER_MEP_INFO: This indicate that the added peer MEP IDs are following. CFM nested attribute has the following attributes in next level. GETLINK RTEXT_FILTER_CFM_CONFIG: IFLA_BRIDGE_CFM_MEP_CREATE_INSTANCE: The created MEP instance number. The type is u32. IFLA_BRIDGE_CFM_MEP_CREATE_DOMAIN: The created MEP domain. The type is u32 (br_cfm_domain). It must be BR_CFM_PORT. This means that CFM frames are transmitted and received directly on the port - untagged. Not in a VLAN. IFLA_BRIDGE_CFM_MEP_CREATE_DIRECTION: The created MEP direction. The type is u32 (br_cfm_mep_direction). It must be BR_CFM_MEP_DIRECTION_DOWN. This means that CFM frames are transmitted and received on the port. Not in the bridge. IFLA_BRIDGE_CFM_MEP_CREATE_IFINDEX: The created MEP residence port ifindex. The type is u32 (ifindex). IFLA_BRIDGE_CFM_MEP_DELETE_INSTANCE: The deleted MEP instance number. The type is u32. IFLA_BRIDGE_CFM_MEP_CONFIG_INSTANCE: The configured MEP instance number. The type is u32. IFLA_BRIDGE_CFM_MEP_CONFIG_UNICAST_MAC: The configured MEP unicast MAC address. The type is 6*u8 (array). This is used as SMAC in all transmitted CFM frames. IFLA_BRIDGE_CFM_MEP_CONFIG_MDLEVEL: The configured MEP unicast MD level. The type is u32. It must be in the range 1-7. No CFM frames are passing through this MEP on lower levels. IFLA_BRIDGE_CFM_MEP_CONFIG_MEPID: The configured MEP ID. The type is u32. It must be in the range 0-0x1FFF. This MEP ID is inserted in any transmitted CCM frame. IFLA_BRIDGE_CFM_CC_CONFIG_INSTANCE: The configured MEP instance number. The type is u32. IFLA_BRIDGE_CFM_CC_CONFIG_ENABLE: The Continuity Check (CC) functionality is enabled or disabled. The type is u32 (bool). IFLA_BRIDGE_CFM_CC_CONFIG_EXP_INTERVAL: The CC expected receive interval of CCM frames. The type is u32 (br_cfm_ccm_interval). This is also the transmission interval of CCM frames when enabled. IFLA_BRIDGE_CFM_CC_CONFIG_EXP_MAID: The CC expected receive MAID in CCM frames. The type is CFM_MAID_LENGTH*u8. This is MAID is also inserted in transmitted CCM frames. IFLA_BRIDGE_CFM_CC_PEER_MEP_INSTANCE: The configured MEP instance number. The type is u32. IFLA_BRIDGE_CFM_CC_PEER_MEPID: The CC Peer MEP ID added. The type is u32. When a Peer MEP ID is added and CC is enabled it is expected to receive CCM frames from that Peer MEP. IFLA_BRIDGE_CFM_CC_RDI_INSTANCE: The configured MEP instance number. The type is u32. IFLA_BRIDGE_CFM_CC_RDI_RDI: The RDI that is inserted in transmitted CCM PDU. The type is u32 (bool). IFLA_BRIDGE_CFM_CC_CCM_TX_INSTANCE: The configured MEP instance number. The type is u32. IFLA_BRIDGE_CFM_CC_CCM_TX_DMAC: The transmitted CCM frame destination MAC address. The type is 6*u8 (array). This is used as DMAC in all transmitted CFM frames. IFLA_BRIDGE_CFM_CC_CCM_TX_SEQ_NO_UPDATE: The transmitted CCM frame update (increment) of sequence number is enabled or disabled. The type is u32 (bool). IFLA_BRIDGE_CFM_CC_CCM_TX_PERIOD: The period of time where CCM frame are transmitted. The type is u32. The time is given in seconds. SETLINK IFLA_BRIDGE_CFM_CC_CCM_TX must be done before timeout to keep transmission alive. When period is zero any ongoing CCM frame transmission will be stopped. IFLA_BRIDGE_CFM_CC_CCM_TX_IF_TLV: The transmitted CCM frame update with Interface Status TLV is enabled or disabled. The type is u32 (bool). IFLA_BRIDGE_CFM_CC_CCM_TX_IF_TLV_VALUE: The transmitted Interface Status TLV value field. The type is u8. IFLA_BRIDGE_CFM_CC_CCM_TX_PORT_TLV: The transmitted CCM frame update with Port Status TLV is enabled or disabled. The type is u32 (bool). IFLA_BRIDGE_CFM_CC_CCM_TX_PORT_TLV_VALUE: The transmitted Port Status TLV value field. The type is u8. Signed-off-by: Henrik Bjoernlund Reviewed-by: Horatiu Vultur Acked-by: Nikolay Aleksandrov --- include/uapi/linux/if_bridge.h | 6 ++ net/bridge/br_cfm_netlink.c | 161 +++++++++++++++++++++++++++++++++ net/bridge/br_netlink.c | 29 +++++- net/bridge/br_private.h | 6 ++ 4 files changed, 200 insertions(+), 2 deletions(-) diff --git a/include/uapi/linux/if_bridge.h b/include/uapi/linux/if_bridge.h index 94cc9444d749..b8b4491922d9 100644 --- a/include/uapi/linux/if_bridge.h +++ b/include/uapi/linux/if_bridge.h @@ -339,6 +339,12 @@ enum { IFLA_BRIDGE_CFM_CC_PEER_MEP_REMOVE, IFLA_BRIDGE_CFM_CC_RDI, IFLA_BRIDGE_CFM_CC_CCM_TX, + IFLA_BRIDGE_CFM_MEP_CREATE_INFO, + IFLA_BRIDGE_CFM_MEP_CONFIG_INFO, + IFLA_BRIDGE_CFM_CC_CONFIG_INFO, + IFLA_BRIDGE_CFM_CC_RDI_INFO, + IFLA_BRIDGE_CFM_CC_CCM_TX_INFO, + IFLA_BRIDGE_CFM_CC_PEER_MEP_INFO, __IFLA_BRIDGE_CFM_MAX, }; diff --git a/net/bridge/br_cfm_netlink.c b/net/bridge/br_cfm_netlink.c index 8a7545ab0014..55302bfbfe60 100644 --- a/net/bridge/br_cfm_netlink.c +++ b/net/bridge/br_cfm_netlink.c @@ -454,3 +454,164 @@ int br_cfm_parse(struct net_bridge *br, struct net_bridge_port *p, return 0; } + +int br_cfm_config_fill_info(struct sk_buff *skb, struct net_bridge *br) +{ + struct br_cfm_peer_mep *peer_mep; + struct br_cfm_mep *mep; + struct nlattr *tb; + + hlist_for_each_entry_rcu(mep, &br->mep_list, head) { + tb = nla_nest_start(skb, IFLA_BRIDGE_CFM_MEP_CREATE_INFO); + if (!tb) + goto nla_info_failure; + + if (nla_put_u32(skb, IFLA_BRIDGE_CFM_MEP_CREATE_INSTANCE, + mep->instance)) + goto nla_put_failure; + + if (nla_put_u32(skb, IFLA_BRIDGE_CFM_MEP_CREATE_DOMAIN, + mep->create.domain)) + goto nla_put_failure; + + if (nla_put_u32(skb, IFLA_BRIDGE_CFM_MEP_CREATE_DIRECTION, + mep->create.direction)) + goto nla_put_failure; + + if (nla_put_u32(skb, IFLA_BRIDGE_CFM_MEP_CREATE_IFINDEX, + mep->create.ifindex)) + goto nla_put_failure; + + nla_nest_end(skb, tb); + + tb = nla_nest_start(skb, IFLA_BRIDGE_CFM_MEP_CONFIG_INFO); + + if (!tb) + goto nla_info_failure; + + if (nla_put_u32(skb, IFLA_BRIDGE_CFM_MEP_CONFIG_INSTANCE, + mep->instance)) + goto nla_put_failure; + + if (nla_put(skb, IFLA_BRIDGE_CFM_MEP_CONFIG_UNICAST_MAC, + sizeof(mep->config.unicast_mac.addr), + mep->config.unicast_mac.addr)) + goto nla_put_failure; + + if (nla_put_u32(skb, IFLA_BRIDGE_CFM_MEP_CONFIG_MDLEVEL, + mep->config.mdlevel)) + goto nla_put_failure; + + if (nla_put_u32(skb, IFLA_BRIDGE_CFM_MEP_CONFIG_MEPID, + mep->config.mepid)) + goto nla_put_failure; + + nla_nest_end(skb, tb); + + tb = nla_nest_start(skb, IFLA_BRIDGE_CFM_CC_CONFIG_INFO); + + if (!tb) + goto nla_info_failure; + + if (nla_put_u32(skb, IFLA_BRIDGE_CFM_CC_CONFIG_INSTANCE, + mep->instance)) + goto nla_put_failure; + + if (nla_put_u32(skb, IFLA_BRIDGE_CFM_CC_CONFIG_ENABLE, + mep->cc_config.enable)) + goto nla_put_failure; + + if (nla_put_u32(skb, IFLA_BRIDGE_CFM_CC_CONFIG_EXP_INTERVAL, + mep->cc_config.exp_interval)) + goto nla_put_failure; + + if (nla_put(skb, IFLA_BRIDGE_CFM_CC_CONFIG_EXP_MAID, + sizeof(mep->cc_config.exp_maid.data), + mep->cc_config.exp_maid.data)) + goto nla_put_failure; + + nla_nest_end(skb, tb); + + tb = nla_nest_start(skb, IFLA_BRIDGE_CFM_CC_RDI_INFO); + + if (!tb) + goto nla_info_failure; + + if (nla_put_u32(skb, IFLA_BRIDGE_CFM_CC_RDI_INSTANCE, + mep->instance)) + goto nla_put_failure; + + if (nla_put_u32(skb, IFLA_BRIDGE_CFM_CC_RDI_RDI, + mep->rdi)) + goto nla_put_failure; + + nla_nest_end(skb, tb); + + tb = nla_nest_start(skb, IFLA_BRIDGE_CFM_CC_CCM_TX_INFO); + + if (!tb) + goto nla_info_failure; + + if (nla_put_u32(skb, IFLA_BRIDGE_CFM_CC_CCM_TX_INSTANCE, + mep->instance)) + goto nla_put_failure; + + if (nla_put(skb, IFLA_BRIDGE_CFM_CC_CCM_TX_DMAC, + sizeof(mep->cc_ccm_tx_info.dmac), + mep->cc_ccm_tx_info.dmac.addr)) + goto nla_put_failure; + + if (nla_put_u32(skb, IFLA_BRIDGE_CFM_CC_CCM_TX_SEQ_NO_UPDATE, + mep->cc_ccm_tx_info.seq_no_update)) + goto nla_put_failure; + + if (nla_put_u32(skb, IFLA_BRIDGE_CFM_CC_CCM_TX_PERIOD, + mep->cc_ccm_tx_info.period)) + goto nla_put_failure; + + if (nla_put_u32(skb, IFLA_BRIDGE_CFM_CC_CCM_TX_IF_TLV, + mep->cc_ccm_tx_info.if_tlv)) + goto nla_put_failure; + + if (nla_put_u8(skb, IFLA_BRIDGE_CFM_CC_CCM_TX_IF_TLV_VALUE, + mep->cc_ccm_tx_info.if_tlv_value)) + goto nla_put_failure; + + if (nla_put_u32(skb, IFLA_BRIDGE_CFM_CC_CCM_TX_PORT_TLV, + mep->cc_ccm_tx_info.port_tlv)) + goto nla_put_failure; + + if (nla_put_u8(skb, IFLA_BRIDGE_CFM_CC_CCM_TX_PORT_TLV_VALUE, + mep->cc_ccm_tx_info.port_tlv_value)) + goto nla_put_failure; + + nla_nest_end(skb, tb); + + hlist_for_each_entry_rcu(peer_mep, &mep->peer_mep_list, head) { + tb = nla_nest_start(skb, + IFLA_BRIDGE_CFM_CC_PEER_MEP_INFO); + + if (!tb) + goto nla_info_failure; + + if (nla_put_u32(skb, + IFLA_BRIDGE_CFM_CC_PEER_MEP_INSTANCE, + mep->instance)) + goto nla_put_failure; + + if (nla_put_u32(skb, IFLA_BRIDGE_CFM_CC_PEER_MEPID, + peer_mep->mepid)) + goto nla_put_failure; + + nla_nest_end(skb, tb); + } + } + + return 0; + +nla_put_failure: + nla_nest_cancel(skb, tb); + +nla_info_failure: + return -EMSGSIZE; +} diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c index 431ee2b06dc1..69bfe165ff7f 100644 --- a/net/bridge/br_netlink.c +++ b/net/bridge/br_netlink.c @@ -16,6 +16,7 @@ #include "br_private.h" #include "br_private_stp.h" +#include "br_private_cfm.h" #include "br_private_tunnel.h" static int __get_num_vlan_infos(struct net_bridge_vlan_group *vg, @@ -426,7 +427,8 @@ static int br_fill_ifinfo(struct sk_buff *skb, if (filter_mask & (RTEXT_FILTER_BRVLAN | RTEXT_FILTER_BRVLAN_COMPRESSED | - RTEXT_FILTER_MRP)) { + RTEXT_FILTER_MRP | + RTEXT_FILTER_CFM_CONFIG)) { af = nla_nest_start_noflag(skb, IFLA_AF_SPEC); if (!af) goto nla_put_failure; @@ -475,6 +477,28 @@ static int br_fill_ifinfo(struct sk_buff *skb, goto nla_put_failure; } + if (filter_mask & RTEXT_FILTER_CFM_CONFIG) { + struct nlattr *cfm_nest = NULL; + int err; + + if (!br_cfm_created(br) || port) + goto done; + + cfm_nest = nla_nest_start(skb, IFLA_BRIDGE_CFM); + if (!cfm_nest) + goto nla_put_failure; + + if (filter_mask & RTEXT_FILTER_CFM_CONFIG) { + rcu_read_lock(); + err = br_cfm_config_fill_info(skb, br); + rcu_read_unlock(); + if (err) + goto nla_put_failure; + } + + nla_nest_end(skb, cfm_nest); + } + done: if (af) nla_nest_end(skb, af); @@ -538,7 +562,8 @@ int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, if (!port && !(filter_mask & RTEXT_FILTER_BRVLAN) && !(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED) && - !(filter_mask & RTEXT_FILTER_MRP)) + !(filter_mask & RTEXT_FILTER_MRP) && + !(filter_mask & RTEXT_FILTER_CFM_CONFIG)) return 0; return br_fill_ifinfo(skb, port, pid, seq, RTM_NEWLINK, nlflags, diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h index 6a5db0553f19..f571bdeb5d83 100644 --- a/net/bridge/br_private.h +++ b/net/bridge/br_private.h @@ -1465,6 +1465,7 @@ int br_cfm_parse(struct net_bridge *br, struct net_bridge_port *p, struct nlattr *attr, int cmd, struct netlink_ext_ack *extack); bool br_cfm_created(struct net_bridge *br); void br_cfm_port_del(struct net_bridge *br, struct net_bridge_port *p); +int br_cfm_config_fill_info(struct sk_buff *skb, struct net_bridge *br); #else static inline int br_cfm_parse(struct net_bridge *br, struct net_bridge_port *p, struct nlattr *attr, int cmd, @@ -1482,6 +1483,11 @@ static inline void br_cfm_port_del(struct net_bridge *br, struct net_bridge_port *p) { } + +static inline int br_cfm_config_fill_info(struct sk_buff *skb, struct net_bridge *br) +{ + return -EOPNOTSUPP; +} #endif /* br_netlink.c */ From patchwork Thu Oct 15 11:54:17 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Henrik Bjoernlund X-Patchwork-Id: 11839115 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=-12.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 A1E6EC43467 for ; Thu, 15 Oct 2020 11:59:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3406D2145D for ; Thu, 15 Oct 2020 11:59:55 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=microchip.com header.i=@microchip.com header.b="oH0M1llt" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730634AbgJOL7n (ORCPT ); Thu, 15 Oct 2020 07:59:43 -0400 Received: from esa2.microchip.iphmx.com ([68.232.149.84]:1156 "EHLO esa2.microchip.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729779AbgJOL5F (ORCPT ); Thu, 15 Oct 2020 07:57:05 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1602763024; x=1634299024; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=dCs1f6lIf8xmklJfTlZ0ns2aDOMYhCz2geP8VVtJjPE=; b=oH0M1lltbwjd/huvztOPHjazpA77UJ+k38IlFhnU6e9WgymMnfJF07Pk 8RfZEGFtc1jDPETbTh21IZGtQmpunm5xrk8aWlxwrYJhShKseLXE1eQc0 B6Em53oxISB5OSppHmy4cRelIvdsLHx/ZfkCVEswJFur4AGT4K7dv28oS 9H89patfHuJ8At7EO0EbU0/fobbzOHaA5m1ttFbq2mUh4uw+4yDNxvY3/ HtVxJ/MRv8rNZGT+nt86OrmetOcJgDb62ENdQCizPvD37oyW2m/MgEO53 xshrD5N4eYhLx4NOAM3afePZMsIrDAgQeNZaKHeY2nMQ7uvVBjUU06BPi g==; IronPort-SDR: P+HeTirVAzYBbBThQWI1nPMKDFwXgxzXf6LHlgWitnkUVrH+OUg8F3NIt8UR3cFBEbgSjaN8NJ ADKS+PX/lMqaHgmd7poBpGVkV9aMF9TVy4TDSsom4qQ8L7i2xJqnLWvxoJKDy/I52QAKDWm0d/ lSvKN1wkChuRKBNjGGxt2idCXrb7Tjf0aHlW/zjDoesn2nGd/plVsWECaZfdAPI4J9UPNnyJOp cnQUYSDHQnbd+ii9+tauN2ppGzCNh+AnWgdO9bAsJy8mXB2NHLEuSA6oSeIJbnZFyE1GPbzP6N vks= X-IronPort-AV: E=Sophos;i="5.77,378,1596524400"; d="scan'208";a="92709658" Received: from smtpout.microchip.com (HELO email.microchip.com) ([198.175.253.82]) by esa2.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 15 Oct 2020 04:56:28 -0700 Received: from chn-vm-ex03.mchp-main.com (10.10.85.151) by chn-vm-ex03.mchp-main.com (10.10.85.151) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1979.3; Thu, 15 Oct 2020 04:56:28 -0700 Received: from soft-test08.microsemi.net (10.10.115.15) by chn-vm-ex03.mchp-main.com (10.10.85.151) with Microsoft SMTP Server id 15.1.1979.3 via Frontend Transport; Thu, 15 Oct 2020 04:56:26 -0700 From: Henrik Bjoernlund To: , , , , , , , , , CC: Henrik Bjoernlund , Horatiu Vultur Subject: [PATCH net-next v6 09/10] bridge: cfm: Netlink GET status Interface. Date: Thu, 15 Oct 2020 11:54:17 +0000 Message-ID: <20201015115418.2711454-10-henrik.bjoernlund@microchip.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20201015115418.2711454-1-henrik.bjoernlund@microchip.com> References: <20201015115418.2711454-1-henrik.bjoernlund@microchip.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org This is the implementation of CFM netlink status get information interface. Add new nested netlink attributes. These attributes are used by the user space to get status information. GETLINK: Request filter RTEXT_FILTER_CFM_STATUS: Indicating that CFM status information must be delivered. IFLA_BRIDGE_CFM: Points to the CFM information. IFLA_BRIDGE_CFM_MEP_STATUS_INFO: This indicate that the MEP instance status are following. IFLA_BRIDGE_CFM_CC_PEER_STATUS_INFO: This indicate that the peer MEP status are following. CFM nested attribute has the following attributes in next level. GETLINK RTEXT_FILTER_CFM_STATUS: IFLA_BRIDGE_CFM_MEP_STATUS_INSTANCE: The MEP instance number of the delivered status. The type is u32. IFLA_BRIDGE_CFM_MEP_STATUS_OPCODE_UNEXP_SEEN: The MEP instance received CFM PDU with unexpected Opcode. The type is u32 (bool). IFLA_BRIDGE_CFM_MEP_STATUS_VERSION_UNEXP_SEEN: The MEP instance received CFM PDU with unexpected version. The type is u32 (bool). IFLA_BRIDGE_CFM_MEP_STATUS_RX_LEVEL_LOW_SEEN: The MEP instance received CCM PDU with MD level lower than configured level. This frame is discarded. The type is u32 (bool). IFLA_BRIDGE_CFM_CC_PEER_STATUS_INSTANCE: The MEP instance number of the delivered status. The type is u32. IFLA_BRIDGE_CFM_CC_PEER_STATUS_PEER_MEPID: The added Peer MEP ID of the delivered status. The type is u32. IFLA_BRIDGE_CFM_CC_PEER_STATUS_CCM_DEFECT: The CCM defect status. The type is u32 (bool). True means no CCM frame is received for 3.25 intervals. IFLA_BRIDGE_CFM_CC_CONFIG_EXP_INTERVAL. IFLA_BRIDGE_CFM_CC_PEER_STATUS_RDI: The last received CCM PDU RDI. The type is u32 (bool). IFLA_BRIDGE_CFM_CC_PEER_STATUS_PORT_TLV_VALUE: The last received CCM PDU Port Status TLV value field. The type is u8. IFLA_BRIDGE_CFM_CC_PEER_STATUS_IF_TLV_VALUE: The last received CCM PDU Interface Status TLV value field. The type is u8. IFLA_BRIDGE_CFM_CC_PEER_STATUS_SEEN: A CCM frame has been received from Peer MEP. The type is u32 (bool). This is cleared after GETLINK IFLA_BRIDGE_CFM_CC_PEER_STATUS_INFO. IFLA_BRIDGE_CFM_CC_PEER_STATUS_TLV_SEEN: A CCM frame with TLV has been received from Peer MEP. The type is u32 (bool). This is cleared after GETLINK IFLA_BRIDGE_CFM_CC_PEER_STATUS_INFO. IFLA_BRIDGE_CFM_CC_PEER_STATUS_SEQ_UNEXP_SEEN: A CCM frame with unexpected sequence number has been received from Peer MEP. The type is u32 (bool). When a sequence number is not one higher than previously received then it is unexpected. This is cleared after GETLINK IFLA_BRIDGE_CFM_CC_PEER_STATUS_INFO. Signed-off-by: Henrik Bjoernlund Reviewed-by: Horatiu Vultur Acked-by: Nikolay Aleksandrov --- include/uapi/linux/if_bridge.h | 29 +++++++++ include/uapi/linux/rtnetlink.h | 1 + net/bridge/br_cfm_netlink.c | 105 +++++++++++++++++++++++++++++++++ net/bridge/br_netlink.c | 16 ++++- net/bridge/br_private.h | 6 ++ 5 files changed, 154 insertions(+), 3 deletions(-) diff --git a/include/uapi/linux/if_bridge.h b/include/uapi/linux/if_bridge.h index b8b4491922d9..d975e1223884 100644 --- a/include/uapi/linux/if_bridge.h +++ b/include/uapi/linux/if_bridge.h @@ -345,6 +345,8 @@ enum { IFLA_BRIDGE_CFM_CC_RDI_INFO, IFLA_BRIDGE_CFM_CC_CCM_TX_INFO, IFLA_BRIDGE_CFM_CC_PEER_MEP_INFO, + IFLA_BRIDGE_CFM_MEP_STATUS_INFO, + IFLA_BRIDGE_CFM_CC_PEER_STATUS_INFO, __IFLA_BRIDGE_CFM_MAX, }; @@ -424,6 +426,33 @@ enum { #define IFLA_BRIDGE_CFM_CC_CCM_TX_MAX (__IFLA_BRIDGE_CFM_CC_CCM_TX_MAX - 1) +enum { + IFLA_BRIDGE_CFM_MEP_STATUS_UNSPEC, + IFLA_BRIDGE_CFM_MEP_STATUS_INSTANCE, + IFLA_BRIDGE_CFM_MEP_STATUS_OPCODE_UNEXP_SEEN, + IFLA_BRIDGE_CFM_MEP_STATUS_VERSION_UNEXP_SEEN, + IFLA_BRIDGE_CFM_MEP_STATUS_RX_LEVEL_LOW_SEEN, + __IFLA_BRIDGE_CFM_MEP_STATUS_MAX, +}; + +#define IFLA_BRIDGE_CFM_MEP_STATUS_MAX (__IFLA_BRIDGE_CFM_MEP_STATUS_MAX - 1) + +enum { + IFLA_BRIDGE_CFM_CC_PEER_STATUS_UNSPEC, + IFLA_BRIDGE_CFM_CC_PEER_STATUS_INSTANCE, + IFLA_BRIDGE_CFM_CC_PEER_STATUS_PEER_MEPID, + IFLA_BRIDGE_CFM_CC_PEER_STATUS_CCM_DEFECT, + IFLA_BRIDGE_CFM_CC_PEER_STATUS_RDI, + IFLA_BRIDGE_CFM_CC_PEER_STATUS_PORT_TLV_VALUE, + IFLA_BRIDGE_CFM_CC_PEER_STATUS_IF_TLV_VALUE, + IFLA_BRIDGE_CFM_CC_PEER_STATUS_SEEN, + IFLA_BRIDGE_CFM_CC_PEER_STATUS_TLV_SEEN, + IFLA_BRIDGE_CFM_CC_PEER_STATUS_SEQ_UNEXP_SEEN, + __IFLA_BRIDGE_CFM_CC_PEER_STATUS_MAX, +}; + +#define IFLA_BRIDGE_CFM_CC_PEER_STATUS_MAX (__IFLA_BRIDGE_CFM_CC_PEER_STATUS_MAX - 1) + struct bridge_stp_xstats { __u64 transition_blk; __u64 transition_fwd; diff --git a/include/uapi/linux/rtnetlink.h b/include/uapi/linux/rtnetlink.h index ffc9ca1f2bdb..fdd408f6a5d2 100644 --- a/include/uapi/linux/rtnetlink.h +++ b/include/uapi/linux/rtnetlink.h @@ -780,6 +780,7 @@ enum { #define RTEXT_FILTER_SKIP_STATS (1 << 3) #define RTEXT_FILTER_MRP (1 << 4) #define RTEXT_FILTER_CFM_CONFIG (1 << 5) +#define RTEXT_FILTER_CFM_STATUS (1 << 6) /* End of information exported to user level */ diff --git a/net/bridge/br_cfm_netlink.c b/net/bridge/br_cfm_netlink.c index 55302bfbfe60..7bac465f2e19 100644 --- a/net/bridge/br_cfm_netlink.c +++ b/net/bridge/br_cfm_netlink.c @@ -615,3 +615,108 @@ int br_cfm_config_fill_info(struct sk_buff *skb, struct net_bridge *br) nla_info_failure: return -EMSGSIZE; } + +int br_cfm_status_fill_info(struct sk_buff *skb, struct net_bridge *br) +{ + struct br_cfm_peer_mep *peer_mep; + struct br_cfm_mep *mep; + struct nlattr *tb; + + hlist_for_each_entry_rcu(mep, &br->mep_list, head) { + tb = nla_nest_start(skb, IFLA_BRIDGE_CFM_MEP_STATUS_INFO); + if (!tb) + goto nla_info_failure; + + if (nla_put_u32(skb, IFLA_BRIDGE_CFM_MEP_STATUS_INSTANCE, + mep->instance)) + goto nla_put_failure; + + if (nla_put_u32(skb, + IFLA_BRIDGE_CFM_MEP_STATUS_OPCODE_UNEXP_SEEN, + mep->status.opcode_unexp_seen)) + goto nla_put_failure; + + if (nla_put_u32(skb, + IFLA_BRIDGE_CFM_MEP_STATUS_VERSION_UNEXP_SEEN, + mep->status.version_unexp_seen)) + goto nla_put_failure; + + if (nla_put_u32(skb, + IFLA_BRIDGE_CFM_MEP_STATUS_RX_LEVEL_LOW_SEEN, + mep->status.rx_level_low_seen)) + goto nla_put_failure; + + /* Clear all 'seen' indications */ + mep->status.opcode_unexp_seen = false; + mep->status.version_unexp_seen = false; + mep->status.rx_level_low_seen = false; + + nla_nest_end(skb, tb); + + hlist_for_each_entry_rcu(peer_mep, &mep->peer_mep_list, head) { + tb = nla_nest_start(skb, + IFLA_BRIDGE_CFM_CC_PEER_STATUS_INFO); + if (!tb) + goto nla_info_failure; + + if (nla_put_u32(skb, + IFLA_BRIDGE_CFM_CC_PEER_STATUS_INSTANCE, + mep->instance)) + goto nla_put_failure; + + if (nla_put_u32(skb, + IFLA_BRIDGE_CFM_CC_PEER_STATUS_PEER_MEPID, + peer_mep->mepid)) + goto nla_put_failure; + + if (nla_put_u32(skb, + IFLA_BRIDGE_CFM_CC_PEER_STATUS_CCM_DEFECT, + peer_mep->cc_status.ccm_defect)) + goto nla_put_failure; + + if (nla_put_u32(skb, IFLA_BRIDGE_CFM_CC_PEER_STATUS_RDI, + peer_mep->cc_status.rdi)) + goto nla_put_failure; + + if (nla_put_u8(skb, + IFLA_BRIDGE_CFM_CC_PEER_STATUS_PORT_TLV_VALUE, + peer_mep->cc_status.port_tlv_value)) + goto nla_put_failure; + + if (nla_put_u8(skb, + IFLA_BRIDGE_CFM_CC_PEER_STATUS_IF_TLV_VALUE, + peer_mep->cc_status.if_tlv_value)) + goto nla_put_failure; + + if (nla_put_u32(skb, + IFLA_BRIDGE_CFM_CC_PEER_STATUS_SEEN, + peer_mep->cc_status.seen)) + goto nla_put_failure; + + if (nla_put_u32(skb, + IFLA_BRIDGE_CFM_CC_PEER_STATUS_TLV_SEEN, + peer_mep->cc_status.tlv_seen)) + goto nla_put_failure; + + if (nla_put_u32(skb, + IFLA_BRIDGE_CFM_CC_PEER_STATUS_SEQ_UNEXP_SEEN, + peer_mep->cc_status.seq_unexp_seen)) + goto nla_put_failure; + + /* Clear all 'seen' indications */ + peer_mep->cc_status.seen = false; + peer_mep->cc_status.tlv_seen = false; + peer_mep->cc_status.seq_unexp_seen = false; + + nla_nest_end(skb, tb); + } + } + + return 0; + +nla_put_failure: + nla_nest_cancel(skb, tb); + +nla_info_failure: + return -EMSGSIZE; +} diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c index 69bfe165ff7f..68c2ed87e26b 100644 --- a/net/bridge/br_netlink.c +++ b/net/bridge/br_netlink.c @@ -428,7 +428,8 @@ static int br_fill_ifinfo(struct sk_buff *skb, if (filter_mask & (RTEXT_FILTER_BRVLAN | RTEXT_FILTER_BRVLAN_COMPRESSED | RTEXT_FILTER_MRP | - RTEXT_FILTER_CFM_CONFIG)) { + RTEXT_FILTER_CFM_CONFIG | + RTEXT_FILTER_CFM_STATUS)) { af = nla_nest_start_noflag(skb, IFLA_AF_SPEC); if (!af) goto nla_put_failure; @@ -477,7 +478,7 @@ static int br_fill_ifinfo(struct sk_buff *skb, goto nla_put_failure; } - if (filter_mask & RTEXT_FILTER_CFM_CONFIG) { + if (filter_mask & (RTEXT_FILTER_CFM_CONFIG | RTEXT_FILTER_CFM_STATUS)) { struct nlattr *cfm_nest = NULL; int err; @@ -496,6 +497,14 @@ static int br_fill_ifinfo(struct sk_buff *skb, goto nla_put_failure; } + if (filter_mask & RTEXT_FILTER_CFM_STATUS) { + rcu_read_lock(); + err = br_cfm_status_fill_info(skb, br); + rcu_read_unlock(); + if (err) + goto nla_put_failure; + } + nla_nest_end(skb, cfm_nest); } @@ -563,7 +572,8 @@ int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, if (!port && !(filter_mask & RTEXT_FILTER_BRVLAN) && !(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED) && !(filter_mask & RTEXT_FILTER_MRP) && - !(filter_mask & RTEXT_FILTER_CFM_CONFIG)) + !(filter_mask & RTEXT_FILTER_CFM_CONFIG) && + !(filter_mask & RTEXT_FILTER_CFM_STATUS)) return 0; return br_fill_ifinfo(skb, port, pid, seq, RTM_NEWLINK, nlflags, diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h index f571bdeb5d83..228635b350a2 100644 --- a/net/bridge/br_private.h +++ b/net/bridge/br_private.h @@ -1466,6 +1466,7 @@ int br_cfm_parse(struct net_bridge *br, struct net_bridge_port *p, bool br_cfm_created(struct net_bridge *br); void br_cfm_port_del(struct net_bridge *br, struct net_bridge_port *p); int br_cfm_config_fill_info(struct sk_buff *skb, struct net_bridge *br); +int br_cfm_status_fill_info(struct sk_buff *skb, struct net_bridge *br); #else static inline int br_cfm_parse(struct net_bridge *br, struct net_bridge_port *p, struct nlattr *attr, int cmd, @@ -1488,6 +1489,11 @@ static inline int br_cfm_config_fill_info(struct sk_buff *skb, struct net_bridge { return -EOPNOTSUPP; } + +static inline int br_cfm_status_fill_info(struct sk_buff *skb, struct net_bridge *br) +{ + return -EOPNOTSUPP; +} #endif /* br_netlink.c */ From patchwork Thu Oct 15 11:54:18 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Henrik Bjoernlund X-Patchwork-Id: 11839111 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=-12.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,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 AA00CC433E7 for ; Thu, 15 Oct 2020 11:59:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2ADC0212CC for ; Thu, 15 Oct 2020 11:59:43 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=microchip.com header.i=@microchip.com header.b="OBN8kd7b" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730599AbgJOL7k (ORCPT ); Thu, 15 Oct 2020 07:59:40 -0400 Received: from esa2.microchip.iphmx.com ([68.232.149.84]:1160 "EHLO esa2.microchip.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730045AbgJOL5F (ORCPT ); Thu, 15 Oct 2020 07:57:05 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1602763024; x=1634299024; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=O6bOnyZOE01UfklMi2GHAFpianUW6Nag7EBxBIdq4Bo=; b=OBN8kd7b6sr29ap7LdcPdQDg4qGYF3ViYSbTijudvCNocaYlICBZxCFq Jbh06OyuujJfyOoHwTFwHq2412m2HPkx2xa7sYyZAfVaEzcmyA6ijsbnM slyZG/m1CkU8JJhD43Ny3eJ8i+G7abZoe8Lgb5IS5nM3HkDx6p3n8L7Oa b+7f++yjarRKj2Deh64hIw+v++4qWGD1PgrwWFyCsu0ZA53TZIQEkHgBc oZQtI8aC3E4rEdSAHuf/k4yOI1s5ADzKNP2A7u6XdLDVn6U6OnlI/cYk2 5z16YcxCS3uDAaVLXy321OmSjCM+wTIy+XVY/oNKNcjZNWHLW1My5ll8J g==; IronPort-SDR: prZHmN6cIgJzQ7KKH7vWpGo13yE5NHNV8cLBrWYBvPGwIyzGssPgHGUAeyNMS8ZH61+d2IIpMu UHK3MeK9ktKc5Pf/yHzuMb9b122zCkGy502h0bKp9hRb2VgJaGOUbBdW1C3dByatnvt8XPIMW2 6665lzg8E2g+OE47INCQN0CLwvvVWf+K6bGPCcZCfTSXsSch7rrnr4+L0oQFnyxH6788aiofIi HB20EBig0M7I3riiI72tGS7HKLDdcQthtaXtNqvmMqEfK39OstUcNLDomqFH3iGKlY1FeSWKsV jjk= X-IronPort-AV: E=Sophos;i="5.77,378,1596524400"; d="scan'208";a="92709661" Received: from smtpout.microchip.com (HELO email.microchip.com) ([198.175.253.82]) by esa2.microchip.iphmx.com with ESMTP/TLS/AES256-SHA256; 15 Oct 2020 04:56:32 -0700 Received: from chn-vm-ex03.mchp-main.com (10.10.85.151) by chn-vm-ex03.mchp-main.com (10.10.85.151) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1979.3; Thu, 15 Oct 2020 04:56:31 -0700 Received: from soft-test08.microsemi.net (10.10.115.15) by chn-vm-ex03.mchp-main.com (10.10.85.151) with Microsoft SMTP Server id 15.1.1979.3 via Frontend Transport; Thu, 15 Oct 2020 04:56:28 -0700 From: Henrik Bjoernlund To: , , , , , , , , , CC: Henrik Bjoernlund , Horatiu Vultur Subject: [PATCH net-next v6 10/10] bridge: cfm: Netlink Notifications. Date: Thu, 15 Oct 2020 11:54:18 +0000 Message-ID: <20201015115418.2711454-11-henrik.bjoernlund@microchip.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20201015115418.2711454-1-henrik.bjoernlund@microchip.com> References: <20201015115418.2711454-1-henrik.bjoernlund@microchip.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org This is the implementation of Netlink notifications out of CFM. Notifications are initiated whenever a state change happens in CFM. IFLA_BRIDGE_CFM: Points to the CFM information. IFLA_BRIDGE_CFM_MEP_STATUS_INFO: This indicate that the MEP instance status are following. IFLA_BRIDGE_CFM_CC_PEER_STATUS_INFO: This indicate that the peer MEP status are following. CFM nested attribute has the following attributes in next level. IFLA_BRIDGE_CFM_MEP_STATUS_INSTANCE: The MEP instance number of the delivered status. The type is NLA_U32. IFLA_BRIDGE_CFM_MEP_STATUS_OPCODE_UNEXP_SEEN: The MEP instance received CFM PDU with unexpected Opcode. The type is NLA_U32 (bool). IFLA_BRIDGE_CFM_MEP_STATUS_VERSION_UNEXP_SEEN: The MEP instance received CFM PDU with unexpected version. The type is NLA_U32 (bool). IFLA_BRIDGE_CFM_MEP_STATUS_RX_LEVEL_LOW_SEEN: The MEP instance received CCM PDU with MD level lower than configured level. This frame is discarded. The type is NLA_U32 (bool). IFLA_BRIDGE_CFM_CC_PEER_STATUS_INSTANCE: The MEP instance number of the delivered status. The type is NLA_U32. IFLA_BRIDGE_CFM_CC_PEER_STATUS_PEER_MEPID: The added Peer MEP ID of the delivered status. The type is NLA_U32. IFLA_BRIDGE_CFM_CC_PEER_STATUS_CCM_DEFECT: The CCM defect status. The type is NLA_U32 (bool). True means no CCM frame is received for 3.25 intervals. IFLA_BRIDGE_CFM_CC_CONFIG_EXP_INTERVAL. IFLA_BRIDGE_CFM_CC_PEER_STATUS_RDI: The last received CCM PDU RDI. The type is NLA_U32 (bool). IFLA_BRIDGE_CFM_CC_PEER_STATUS_PORT_TLV_VALUE: The last received CCM PDU Port Status TLV value field. The type is NLA_U8. IFLA_BRIDGE_CFM_CC_PEER_STATUS_IF_TLV_VALUE: The last received CCM PDU Interface Status TLV value field. The type is NLA_U8. IFLA_BRIDGE_CFM_CC_PEER_STATUS_SEEN: A CCM frame has been received from Peer MEP. The type is NLA_U32 (bool). This is cleared after GETLINK IFLA_BRIDGE_CFM_CC_PEER_STATUS_INFO. IFLA_BRIDGE_CFM_CC_PEER_STATUS_TLV_SEEN: A CCM frame with TLV has been received from Peer MEP. The type is NLA_U32 (bool). This is cleared after GETLINK IFLA_BRIDGE_CFM_CC_PEER_STATUS_INFO. IFLA_BRIDGE_CFM_CC_PEER_STATUS_SEQ_UNEXP_SEEN: A CCM frame with unexpected sequence number has been received from Peer MEP. The type is NLA_U32 (bool). When a sequence number is not one higher than previously received then it is unexpected. This is cleared after GETLINK IFLA_BRIDGE_CFM_CC_PEER_STATUS_INFO. Signed-off-by: Henrik Bjoernlund Reviewed-by: Horatiu Vultur Acked-by: Nikolay Aleksandrov --- net/bridge/br_cfm.c | 48 ++++++++++++++++++++++++ net/bridge/br_cfm_netlink.c | 25 ++++++++----- net/bridge/br_netlink.c | 73 ++++++++++++++++++++++++++++++++----- net/bridge/br_private.h | 22 ++++++++++- 4 files changed, 147 insertions(+), 21 deletions(-) diff --git a/net/bridge/br_cfm.c b/net/bridge/br_cfm.c index 3912fedfd289..001064f7583d 100644 --- a/net/bridge/br_cfm.c +++ b/net/bridge/br_cfm.c @@ -138,6 +138,13 @@ static void ccm_rx_timer_start(struct br_cfm_peer_mep *peer_mep) usecs_to_jiffies(interval_us / 4)); } +static void br_cfm_notify(int event, const struct net_bridge_port *port) +{ + u32 filter = RTEXT_FILTER_CFM_STATUS; + + return br_info_notify(event, port->br, NULL, filter); +} + static void cc_peer_enable(struct br_cfm_peer_mep *peer_mep) { memset(&peer_mep->cc_status, 0, sizeof(peer_mep->cc_status)); @@ -288,6 +295,7 @@ static void ccm_tx_work_expired(struct work_struct *work) static void ccm_rx_work_expired(struct work_struct *work) { struct br_cfm_peer_mep *peer_mep; + struct net_bridge_port *b_port; struct delayed_work *del_work; del_work = to_delayed_work(work); @@ -305,6 +313,13 @@ static void ccm_rx_work_expired(struct work_struct *work) * CCM defect detected */ peer_mep->cc_status.ccm_defect = true; + + /* Change in CCM defect status - notify */ + rcu_read_lock(); + b_port = rcu_dereference(peer_mep->mep->b_port); + if (b_port) + br_cfm_notify(RTM_NEWLINK, b_port); + rcu_read_unlock(); } } @@ -430,6 +445,9 @@ static int br_cfm_frame_rx(struct net_bridge_port *port, struct sk_buff *skb) if (peer_mep->cc_status.ccm_defect) { peer_mep->cc_status.ccm_defect = false; + /* Change in CCM defect status - notify */ + br_cfm_notify(RTM_NEWLINK, port); + /* Start CCM RX timer */ ccm_rx_timer_start(peer_mep); } @@ -799,6 +817,36 @@ int br_cfm_cc_ccm_tx(struct net_bridge *br, const u32 instance, return 0; } +int br_cfm_mep_count(struct net_bridge *br, u32 *count) +{ + struct br_cfm_mep *mep; + + *count = 0; + + rcu_read_lock(); + hlist_for_each_entry_rcu(mep, &br->mep_list, head) + *count += 1; + rcu_read_unlock(); + + return 0; +} + +int br_cfm_peer_mep_count(struct net_bridge *br, u32 *count) +{ + struct br_cfm_peer_mep *peer_mep; + struct br_cfm_mep *mep; + + *count = 0; + + rcu_read_lock(); + hlist_for_each_entry_rcu(mep, &br->mep_list, head) + hlist_for_each_entry_rcu(peer_mep, &mep->peer_mep_list, head) + *count += 1; + rcu_read_unlock(); + + return 0; +} + bool br_cfm_created(struct net_bridge *br) { return !hlist_empty(&br->mep_list); diff --git a/net/bridge/br_cfm_netlink.c b/net/bridge/br_cfm_netlink.c index 7bac465f2e19..9f439d17baa6 100644 --- a/net/bridge/br_cfm_netlink.c +++ b/net/bridge/br_cfm_netlink.c @@ -616,7 +616,9 @@ int br_cfm_config_fill_info(struct sk_buff *skb, struct net_bridge *br) return -EMSGSIZE; } -int br_cfm_status_fill_info(struct sk_buff *skb, struct net_bridge *br) +int br_cfm_status_fill_info(struct sk_buff *skb, + struct net_bridge *br, + bool getlink) { struct br_cfm_peer_mep *peer_mep; struct br_cfm_mep *mep; @@ -646,10 +648,13 @@ int br_cfm_status_fill_info(struct sk_buff *skb, struct net_bridge *br) mep->status.rx_level_low_seen)) goto nla_put_failure; - /* Clear all 'seen' indications */ - mep->status.opcode_unexp_seen = false; - mep->status.version_unexp_seen = false; - mep->status.rx_level_low_seen = false; + /* Only clear if this is a GETLINK */ + if (getlink) { + /* Clear all 'seen' indications */ + mep->status.opcode_unexp_seen = false; + mep->status.version_unexp_seen = false; + mep->status.rx_level_low_seen = false; + } nla_nest_end(skb, tb); @@ -703,10 +708,12 @@ int br_cfm_status_fill_info(struct sk_buff *skb, struct net_bridge *br) peer_mep->cc_status.seq_unexp_seen)) goto nla_put_failure; - /* Clear all 'seen' indications */ - peer_mep->cc_status.seen = false; - peer_mep->cc_status.tlv_seen = false; - peer_mep->cc_status.seq_unexp_seen = false; + if (getlink) { /* Only clear if this is a GETLINK */ + /* Clear all 'seen' indications */ + peer_mep->cc_status.seen = false; + peer_mep->cc_status.tlv_seen = false; + peer_mep->cc_status.seq_unexp_seen = false; + } nla_nest_end(skb, tb); } diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c index 68c2ed87e26b..6952d4852942 100644 --- a/net/bridge/br_netlink.c +++ b/net/bridge/br_netlink.c @@ -94,9 +94,11 @@ static size_t br_get_link_af_size_filtered(const struct net_device *dev, { struct net_bridge_vlan_group *vg = NULL; struct net_bridge_port *p = NULL; - struct net_bridge *br; - int num_vlan_infos; + struct net_bridge *br = NULL; + u32 num_cfm_peer_mep_infos; + u32 num_cfm_mep_infos; size_t vinfo_sz = 0; + int num_vlan_infos; rcu_read_lock(); if (netif_is_bridge_port(dev)) { @@ -115,6 +117,49 @@ static size_t br_get_link_af_size_filtered(const struct net_device *dev, /* Each VLAN is returned in bridge_vlan_info along with flags */ vinfo_sz += num_vlan_infos * nla_total_size(sizeof(struct bridge_vlan_info)); + if (!(filter_mask & RTEXT_FILTER_CFM_STATUS)) + return vinfo_sz; + + if (!br) + return vinfo_sz; + + /* CFM status info must be added */ + br_cfm_mep_count(br, &num_cfm_mep_infos); + br_cfm_peer_mep_count(br, &num_cfm_peer_mep_infos); + + vinfo_sz += nla_total_size(0); /* IFLA_BRIDGE_CFM */ + /* For each status struct the MEP instance (u32) is added */ + /* MEP instance (u32) + br_cfm_mep_status */ + vinfo_sz += num_cfm_mep_infos * + /*IFLA_BRIDGE_CFM_MEP_STATUS_INSTANCE */ + (nla_total_size(sizeof(u32)) + /* IFLA_BRIDGE_CFM_MEP_STATUS_OPCODE_UNEXP_SEEN */ + + nla_total_size(sizeof(u32)) + /* IFLA_BRIDGE_CFM_MEP_STATUS_VERSION_UNEXP_SEEN */ + + nla_total_size(sizeof(u32)) + /* IFLA_BRIDGE_CFM_MEP_STATUS_RX_LEVEL_LOW_SEEN */ + + nla_total_size(sizeof(u32))); + /* MEP instance (u32) + br_cfm_cc_peer_status */ + vinfo_sz += num_cfm_peer_mep_infos * + /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_INSTANCE */ + (nla_total_size(sizeof(u32)) + /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_PEER_MEPID */ + + nla_total_size(sizeof(u32)) + /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_CCM_DEFECT */ + + nla_total_size(sizeof(u32)) + /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_RDI */ + + nla_total_size(sizeof(u32)) + /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_PORT_TLV_VALUE */ + + nla_total_size(sizeof(u8)) + /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_IF_TLV_VALUE */ + + nla_total_size(sizeof(u8)) + /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_SEEN */ + + nla_total_size(sizeof(u32)) + /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_TLV_SEEN */ + + nla_total_size(sizeof(u32)) + /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_SEQ_UNEXP_SEEN */ + + nla_total_size(sizeof(u32))); + return vinfo_sz; } @@ -378,7 +423,8 @@ static int br_fill_ifvlaninfo(struct sk_buff *skb, static int br_fill_ifinfo(struct sk_buff *skb, const struct net_bridge_port *port, u32 pid, u32 seq, int event, unsigned int flags, - u32 filter_mask, const struct net_device *dev) + u32 filter_mask, const struct net_device *dev, + bool getlink) { u8 operstate = netif_running(dev) ? dev->operstate : IF_OPER_DOWN; struct nlattr *af = NULL; @@ -499,7 +545,7 @@ static int br_fill_ifinfo(struct sk_buff *skb, if (filter_mask & RTEXT_FILTER_CFM_STATUS) { rcu_read_lock(); - err = br_cfm_status_fill_info(skb, br); + err = br_cfm_status_fill_info(skb, br, getlink); rcu_read_unlock(); if (err) goto nla_put_failure; @@ -519,11 +565,9 @@ static int br_fill_ifinfo(struct sk_buff *skb, return -EMSGSIZE; } -/* Notify listeners of a change in bridge or port information */ -void br_ifinfo_notify(int event, const struct net_bridge *br, - const struct net_bridge_port *port) +void br_info_notify(int event, const struct net_bridge *br, + const struct net_bridge_port *port, u32 filter) { - u32 filter = RTEXT_FILTER_BRVLAN_COMPRESSED; struct net_device *dev; struct sk_buff *skb; int err = -ENOBUFS; @@ -548,7 +592,7 @@ void br_ifinfo_notify(int event, const struct net_bridge *br, if (skb == NULL) goto errout; - err = br_fill_ifinfo(skb, port, 0, 0, event, 0, filter, dev); + err = br_fill_ifinfo(skb, port, 0, 0, event, 0, filter, dev, false); if (err < 0) { /* -EMSGSIZE implies BUG in br_nlmsg_size() */ WARN_ON(err == -EMSGSIZE); @@ -561,6 +605,15 @@ void br_ifinfo_notify(int event, const struct net_bridge *br, rtnl_set_sk_err(net, RTNLGRP_LINK, err); } +/* Notify listeners of a change in bridge or port information */ +void br_ifinfo_notify(int event, const struct net_bridge *br, + const struct net_bridge_port *port) +{ + u32 filter = RTEXT_FILTER_BRVLAN_COMPRESSED; + + return br_info_notify(event, br, port, filter); +} + /* * Dump information about all ports, in response to GETLINK */ @@ -577,7 +630,7 @@ int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, return 0; return br_fill_ifinfo(skb, port, pid, seq, RTM_NEWLINK, nlflags, - filter_mask, dev); + filter_mask, dev, true); } static int br_vlan_info(struct net_bridge *br, struct net_bridge_port *p, diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h index 228635b350a2..905d406a2fc7 100644 --- a/net/bridge/br_private.h +++ b/net/bridge/br_private.h @@ -1466,7 +1466,11 @@ int br_cfm_parse(struct net_bridge *br, struct net_bridge_port *p, bool br_cfm_created(struct net_bridge *br); void br_cfm_port_del(struct net_bridge *br, struct net_bridge_port *p); int br_cfm_config_fill_info(struct sk_buff *skb, struct net_bridge *br); -int br_cfm_status_fill_info(struct sk_buff *skb, struct net_bridge *br); +int br_cfm_status_fill_info(struct sk_buff *skb, + struct net_bridge *br, + bool getlink); +int br_cfm_mep_count(struct net_bridge *br, u32 *count); +int br_cfm_peer_mep_count(struct net_bridge *br, u32 *count); #else static inline int br_cfm_parse(struct net_bridge *br, struct net_bridge_port *p, struct nlattr *attr, int cmd, @@ -1490,7 +1494,19 @@ static inline int br_cfm_config_fill_info(struct sk_buff *skb, struct net_bridge return -EOPNOTSUPP; } -static inline int br_cfm_status_fill_info(struct sk_buff *skb, struct net_bridge *br) +static inline int br_cfm_status_fill_info(struct sk_buff *skb, + struct net_bridge *br, + bool getlink) +{ + return -EOPNOTSUPP; +} + +static inline int br_cfm_mep_count(struct net_bridge *br, u32 *count) +{ + return -EOPNOTSUPP; +} + +static inline int br_cfm_peer_mep_count(struct net_bridge *br, u32 *count) { return -EOPNOTSUPP; } @@ -1502,6 +1518,8 @@ int br_netlink_init(void); void br_netlink_fini(void); void br_ifinfo_notify(int event, const struct net_bridge *br, const struct net_bridge_port *port); +void br_info_notify(int event, const struct net_bridge *br, + const struct net_bridge_port *port, u32 filter); int br_setlink(struct net_device *dev, struct nlmsghdr *nlmsg, u16 flags, struct netlink_ext_ack *extack); int br_dellink(struct net_device *dev, struct nlmsghdr *nlmsg, u16 flags);