From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C5636C433EF for ; Wed, 20 Oct 2021 02:36:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A28B961167 for ; Wed, 20 Oct 2021 02:36:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229657AbhJTCic (ORCPT ); Tue, 19 Oct 2021 22:38:32 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60140 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229555AbhJTCib (ORCPT ); Tue, 19 Oct 2021 22:38:31 -0400 Received: from mail-pf1-x42f.google.com (mail-pf1-x42f.google.com [IPv6:2607:f8b0:4864:20::42f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 53419C06161C for ; Tue, 19 Oct 2021 19:36:18 -0700 (PDT) Received: by mail-pf1-x42f.google.com with SMTP id d9so1650772pfl.6 for ; Tue, 19 Oct 2021 19:36:18 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=uP74WpUfIxkFQrw13QDTf0eyIC/o9Ip6dzTaEPhVPzY=; b=HXX1pftRzORTj8Px5lEdsuaix32dXDrAzRrLMT4qb8+nQ19QkoDo8IfUJcH4WFm2M2 aP3znHPiJ5Z/OgRt4qlU3oMrhzz4HzGOAGwAg1kLxCIyEDDPI7NnhBtaMKrHSIRsN62O w5bA1Y8ada/17UO6bUAl6Tt94fm9GpBGooLZS5L57b0Ob0BqBs9q8VtXOa+s4HtkIH2n ui7iyGpclZKWSTd+JOUTkRwnuSRDiTCAxdKg0ASSHQHlie+1syy4orPzNuORgS2XKcC8 VpH5mcKmTw/rdk3BNIWWyhkebhZALuh4LG3OoNx1SIAYToi/UEOSyhp02XFZsrT7zIAi YbZg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=uP74WpUfIxkFQrw13QDTf0eyIC/o9Ip6dzTaEPhVPzY=; b=sL7ArKRIa9oO8+Y5W1wOzUUcI/l+4lRXaOlIbNEEmmcmCHUKy3H8J4YSADNAK3z0kf u010bvMt2IdIKr0GXp+beXqrPSGSkPl9DUPR9AKTRQMYIxJ4yh7L6GxbFhY3M/NPvMjC eODNte9/DvoImA8H7Oye+iGSW3VbjNs/FkBJQ0pp9YZsoGD3cQjlRWigRugS+43QX0x6 n9DRjXG8gQiHuHDTrdmjKabuNWJPFWi29nIRV1VRoS6EPEFZ+WUhFsOH1G33RZ2kcJ08 URIAjHc5KjEGqSYqbTbimfrqzHEy32U3hMXobFGX7f2MnHsGI7ed1Vy5ummPT/azNees s3Sg== X-Gm-Message-State: AOAM533TCdr/HJ9MSJ+kcF2PTz0jCzVt/lWlwcdmEbS1EVc1p2YSxvj8 XqquStp6LElZQeAJiVe2qn0dQUgvjf8= X-Google-Smtp-Source: ABdhPJwtuBEQXDL1cCrt1KWlpUZ29vCJwIMVSQE/rzbHQCUkD77aNjUwGn3r0qw7dg1aNj4G4l59sA== X-Received: by 2002:a62:1887:0:b0:44c:872e:27ed with SMTP id 129-20020a621887000000b0044c872e27edmr3448411pfy.71.1634697377682; Tue, 19 Oct 2021 19:36:17 -0700 (PDT) Received: from Laptop-X1.redhat.com ([209.132.188.80]) by smtp.gmail.com with ESMTPSA id w2sm524699pfq.207.2021.10.19.19.36.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 19 Oct 2021 19:36:17 -0700 (PDT) From: Hangbin Liu To: netdev@vger.kernel.org Cc: Nikolay Aleksandrov , roopa@nvidia.com, bridge@lists.linux-foundation.org, davem@davemloft.net, kuba@kernel.org, Nikolay Aleksandrov , Hangbin Liu Subject: [PATCH net] net: bridge: mcast: QRI must be less than QI Date: Wed, 20 Oct 2021 10:36:04 +0800 Message-Id: <20211020023604.695416-1-liuhangbin@gmail.com> X-Mailer: git-send-email 2.31.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Based on RFC3376 8.3: The number of seconds represented by the [Query Response Interval] must be less than the [Query Interval]. Fixes: d902eee43f19 ("bridge: Add multicast count/interval sysfs entries") Signed-off-by: Hangbin Liu --- net/bridge/br_multicast.c | 27 +++++++++++++++++++++++++++ net/bridge/br_netlink.c | 8 ++++++-- net/bridge/br_private.h | 4 ++++ net/bridge/br_sysfs_br.c | 6 ++---- net/bridge/br_vlan_options.c | 8 ++++++-- 5 files changed, 45 insertions(+), 8 deletions(-) diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c index f3d751105343..1a865d08a87f 100644 --- a/net/bridge/br_multicast.c +++ b/net/bridge/br_multicast.c @@ -4522,6 +4522,33 @@ int br_multicast_set_mld_version(struct net_bridge_mcast *brmctx, } #endif +/* RFC3376 8.3: The number of seconds represented by the + * [Query Response Interval] must be less than the [Query Interval]. + */ +int br_multicast_set_qi(struct net_bridge_mcast *brmctx, unsigned long val, + struct netlink_ext_ack *extack) +{ + if (val > brmctx->multicast_query_response_interval) { + brmctx->multicast_query_interval = val; + return 0; + } else { + NL_SET_ERR_MSG(extack, "Invalid QI, must greater than QRI"); + return -EINVAL; + } +} + +int br_multicast_set_qri(struct net_bridge_mcast *brmctx, unsigned long val, + struct netlink_ext_ack *extack) +{ + if (val < brmctx->multicast_query_interval) { + brmctx->multicast_query_response_interval = val; + return 0; + } else { + NL_SET_ERR_MSG(extack, "Invalid QRI, must less than QI"); + return -EINVAL; + } +} + /** * br_multicast_list_adjacent - Returns snooped multicast addresses * @dev: The bridge port adjacent to which to retrieve addresses diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c index 5c6c4305ed23..2b32d7d2ce31 100644 --- a/net/bridge/br_netlink.c +++ b/net/bridge/br_netlink.c @@ -1357,13 +1357,17 @@ static int br_changelink(struct net_device *brdev, struct nlattr *tb[], if (data[IFLA_BR_MCAST_QUERY_INTVL]) { u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERY_INTVL]); - br->multicast_ctx.multicast_query_interval = clock_t_to_jiffies(val); + err = br_multicast_set_qi(&br->multicast_ctx, clock_t_to_jiffies(val), extack); + if (err) + return err; } if (data[IFLA_BR_MCAST_QUERY_RESPONSE_INTVL]) { u64 val = nla_get_u64(data[IFLA_BR_MCAST_QUERY_RESPONSE_INTVL]); - br->multicast_ctx.multicast_query_response_interval = clock_t_to_jiffies(val); + err = br_multicast_set_qri(&br->multicast_ctx, clock_t_to_jiffies(val), extack); + if (err) + return err; } if (data[IFLA_BR_MCAST_STARTUP_QUERY_INTVL]) { diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h index 37ca76406f1e..5019c601f689 100644 --- a/net/bridge/br_private.h +++ b/net/bridge/br_private.h @@ -906,6 +906,10 @@ int br_multicast_set_igmp_version(struct net_bridge_mcast *brmctx, int br_multicast_set_mld_version(struct net_bridge_mcast *brmctx, unsigned long val); #endif +int br_multicast_set_qi(struct net_bridge_mcast *brmctx, unsigned long val, + struct netlink_ext_ack *extack); +int br_multicast_set_qri(struct net_bridge_mcast *brmctx, unsigned long val, + struct netlink_ext_ack *extack); struct net_bridge_mdb_entry * br_mdb_ip_get(struct net_bridge *br, struct br_ip *dst); struct net_bridge_mdb_entry * diff --git a/net/bridge/br_sysfs_br.c b/net/bridge/br_sysfs_br.c index d9a89ddd0331..f794652f8592 100644 --- a/net/bridge/br_sysfs_br.c +++ b/net/bridge/br_sysfs_br.c @@ -658,8 +658,7 @@ static ssize_t multicast_query_interval_show(struct device *d, static int set_query_interval(struct net_bridge *br, unsigned long val, struct netlink_ext_ack *extack) { - br->multicast_ctx.multicast_query_interval = clock_t_to_jiffies(val); - return 0; + return br_multicast_set_qi(&br->multicast_ctx, clock_t_to_jiffies(val), extack); } static ssize_t multicast_query_interval_store(struct device *d, @@ -682,8 +681,7 @@ static ssize_t multicast_query_response_interval_show( static int set_query_response_interval(struct net_bridge *br, unsigned long val, struct netlink_ext_ack *extack) { - br->multicast_ctx.multicast_query_response_interval = clock_t_to_jiffies(val); - return 0; + return br_multicast_set_qri(&br->multicast_ctx, clock_t_to_jiffies(val), extack); } static ssize_t multicast_query_response_interval_store( diff --git a/net/bridge/br_vlan_options.c b/net/bridge/br_vlan_options.c index 8ffd4ed2563c..71e94ff9d926 100644 --- a/net/bridge/br_vlan_options.c +++ b/net/bridge/br_vlan_options.c @@ -521,14 +521,18 @@ static int br_vlan_process_global_one_opts(const struct net_bridge *br, u64 val; val = nla_get_u64(tb[BRIDGE_VLANDB_GOPTS_MCAST_QUERY_INTVL]); - v->br_mcast_ctx.multicast_query_interval = clock_t_to_jiffies(val); + err = br_multicast_set_qi(&v->br_mcast_ctx, clock_t_to_jiffies(val), extack); + if (err) + return err; *changed = true; } if (tb[BRIDGE_VLANDB_GOPTS_MCAST_QUERY_RESPONSE_INTVL]) { u64 val; val = nla_get_u64(tb[BRIDGE_VLANDB_GOPTS_MCAST_QUERY_RESPONSE_INTVL]); - v->br_mcast_ctx.multicast_query_response_interval = clock_t_to_jiffies(val); + err = br_multicast_set_qri(&v->br_mcast_ctx, clock_t_to_jiffies(val), extack); + if (err) + return err; *changed = true; } if (tb[BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_INTVL]) { -- 2.31.1