From patchwork Mon Sep 7 09:56:15 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nikolay Aleksandrov X-Patchwork-Id: 1358709 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=cumulusnetworks.com Authentication-Results: ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=cumulusnetworks.com header.i=@cumulusnetworks.com header.a=rsa-sha256 header.s=google header.b=Hp6tXFsh; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4BlP1D0lbHz9sRK for ; Mon, 7 Sep 2020 20:00:48 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728555AbgIGKAq (ORCPT ); Mon, 7 Sep 2020 06:00:46 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57944 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728503AbgIGKAa (ORCPT ); Mon, 7 Sep 2020 06:00:30 -0400 Received: from mail-wr1-x443.google.com (mail-wr1-x443.google.com [IPv6:2a00:1450:4864:20::443]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B6BB0C061574 for ; Mon, 7 Sep 2020 03:00:29 -0700 (PDT) Received: by mail-wr1-x443.google.com with SMTP id x14so15100462wrl.12 for ; Mon, 07 Sep 2020 03:00:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cumulusnetworks.com; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=/HHkOD9Evu1q0SaEZG9U0z2prXuHI60mm4pmhG3cvh0=; b=Hp6tXFshRH/sYUgPT4ACltIka6rJl0ZV+TE75THsvuVVOfxMSCQGJpMMHAXWFq64yx j/+dZ3bS4dmb5O71FHM0qaUmrvbTcRVNTqhYBDtzOrSrHQjwKJUl8MWe31AJItNuV9sb 65fKQiZVCFv7o8lDp/DjlrgYQJzUn+Bo89oVY= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=/HHkOD9Evu1q0SaEZG9U0z2prXuHI60mm4pmhG3cvh0=; b=dYP7n6bIpY22vX0jskL1SfBGx/s4epmCQMeH+GSwvPBM89N5VnZVa66iKe1HqZ3n3h ElDfzjkgLrWmZP079FSPKcdx6xza8Yle1gVY98E9eA7wTTqq44TkgclArNcKPlRqJf/t pxBhCK9D2458eryzaSKt9irXa7MwT/GHKQadp9cmT0no6EduO8eHDQjNSZJXhnw9Jiq5 fgx6heyAXKdVd5ZQIIzpkUFPCt5V2lhrKhAA3kC3QIctAexDYd97rCei23pe3FgC1v5H ShZ/JNebbCHO55O485Tvj8bNSHh3YiTQ5zKcGUkRXJkw/tcKs3d1hgIN24ymXyxBsoSM 3RIA== X-Gm-Message-State: AOAM532s7LOWEyrTQzDnCHR+sJQALiOgCbJ00ossjjU0ZFSd+xcgnFoG npKvYm1MFNI2Tvv9wZQStUKJ6dwVFwoL+xmX X-Google-Smtp-Source: ABdhPJxNj5jJhL0+QgT0hVq+mm0pwIlT0ig7CzrdNDGnFzVRlRg5guN14rwSRRwIXypDv8MzgDiqAQ== X-Received: by 2002:adf:ec4f:: with SMTP id w15mr19860320wrn.333.1599472827972; Mon, 07 Sep 2020 03:00:27 -0700 (PDT) Received: from localhost.localdomain (84-238-136-197.ip.btc-net.bg. [84.238.136.197]) by smtp.gmail.com with ESMTPSA id 9sm6686289wmf.7.2020.09.07.03.00.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 07 Sep 2020 03:00:27 -0700 (PDT) From: Nikolay Aleksandrov To: netdev@vger.kernel.org Cc: roopa@nvidia.com, bridge@lists.linux-foundation.org, kuba@kernel.org, davem@davemloft.net, Nikolay Aleksandrov Subject: [PATCH net-next v4 11/15] net: bridge: mcast: support for IGMPV3/MLDv2 MODE_IS_INCLUDE/EXCLUDE report Date: Mon, 7 Sep 2020 12:56:15 +0300 Message-Id: <20200907095619.11216-12-nikolay@cumulusnetworks.com> X-Mailer: git-send-email 2.25.4 In-Reply-To: <20200907095619.11216-1-nikolay@cumulusnetworks.com> References: <20200907095619.11216-1-nikolay@cumulusnetworks.com> MIME-Version: 1.0 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org In order to process IGMPV3/MLDv2_MODE_IS_INCLUDE/EXCLUDE report types we need some new helpers which allow us to set/clear flags for all current entries and later delete marked entries after the report sources have been processed. v3: add IPv6/MLDv2 support v2: drop flag helpers and directly do flag bit operations Signed-off-by: Nikolay Aleksandrov --- net/bridge/br_multicast.c | 126 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 126 insertions(+) diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c index 98600a08114e..634415e8c50f 100644 --- a/net/bridge/br_multicast.c +++ b/net/bridge/br_multicast.c @@ -1229,6 +1229,21 @@ void br_multicast_disable_port(struct net_bridge_port *port) spin_unlock(&br->multicast_lock); } +static int __grp_src_delete_marked(struct net_bridge_port_group *pg) +{ + struct net_bridge_group_src *ent; + struct hlist_node *tmp; + int deleted = 0; + + hlist_for_each_entry_safe(ent, tmp, &pg->src_list, node) + if (ent->flags & BR_SGRP_F_DELETE) { + br_multicast_del_group_src(ent); + deleted++; + } + + return deleted; +} + /* State Msg type New state Actions * INCLUDE (A) IS_IN (B) INCLUDE (A+B) (B)=GMI * INCLUDE (A) ALLOW (B) INCLUDE (A+B) (B)=GMI @@ -1263,6 +1278,101 @@ static bool br_multicast_isinc_allow(struct net_bridge_port_group *pg, return changed; } +/* State Msg type New state Actions + * INCLUDE (A) IS_EX (B) EXCLUDE (A*B,B-A) (B-A)=0 + * Delete (A-B) + * Group Timer=GMI + */ +static void __grp_src_isexc_incl(struct net_bridge_port_group *pg, + void *srcs, u32 nsrcs, size_t src_size) +{ + struct net_bridge_group_src *ent; + struct br_ip src_ip; + u32 src_idx; + + hlist_for_each_entry(ent, &pg->src_list, node) + ent->flags |= BR_SGRP_F_DELETE; + + memset(&src_ip, 0, sizeof(src_ip)); + src_ip.proto = pg->addr.proto; + for (src_idx = 0; src_idx < nsrcs; src_idx++) { + memcpy(&src_ip.u, srcs, src_size); + ent = br_multicast_find_group_src(pg, &src_ip); + if (ent) + ent->flags &= ~BR_SGRP_F_DELETE; + else + br_multicast_new_group_src(pg, &src_ip); + srcs += src_size; + } + + __grp_src_delete_marked(pg); +} + +/* State Msg type New state Actions + * EXCLUDE (X,Y) IS_EX (A) EXCLUDE (A-Y,Y*A) (A-X-Y)=GMI + * Delete (X-A) + * Delete (Y-A) + * Group Timer=GMI + */ +static bool __grp_src_isexc_excl(struct net_bridge_port_group *pg, + void *srcs, u32 nsrcs, size_t src_size) +{ + struct net_bridge *br = pg->port->br; + struct net_bridge_group_src *ent; + unsigned long now = jiffies; + bool changed = false; + struct br_ip src_ip; + u32 src_idx; + + hlist_for_each_entry(ent, &pg->src_list, node) + ent->flags |= BR_SGRP_F_DELETE; + + memset(&src_ip, 0, sizeof(src_ip)); + src_ip.proto = pg->addr.proto; + for (src_idx = 0; src_idx < nsrcs; src_idx++) { + memcpy(&src_ip.u, srcs, src_size); + ent = br_multicast_find_group_src(pg, &src_ip); + if (ent) { + ent->flags &= ~BR_SGRP_F_DELETE; + } else { + ent = br_multicast_new_group_src(pg, &src_ip); + if (ent) { + mod_timer(&ent->timer, + now + br_multicast_gmi(br)); + changed = true; + } + } + srcs += src_size; + } + + if (__grp_src_delete_marked(pg)) + changed = true; + + return changed; +} + +static bool br_multicast_isexc(struct net_bridge_port_group *pg, + void *srcs, u32 nsrcs, size_t src_size) +{ + struct net_bridge *br = pg->port->br; + bool changed = false; + + switch (pg->filter_mode) { + case MCAST_INCLUDE: + __grp_src_isexc_incl(pg, srcs, nsrcs, src_size); + changed = true; + break; + case MCAST_EXCLUDE: + changed = __grp_src_isexc_excl(pg, srcs, nsrcs, src_size); + break; + } + + pg->filter_mode = MCAST_EXCLUDE; + mod_timer(&pg->timer, jiffies + br_multicast_gmi(br)); + + return changed; +} + static struct net_bridge_port_group * br_multicast_find_port(struct net_bridge_mdb_entry *mp, struct net_bridge_port *p, @@ -1360,6 +1470,14 @@ static int br_ip4_multicast_igmp3_report(struct net_bridge *br, changed = br_multicast_isinc_allow(pg, grec->grec_src, nsrcs, sizeof(__be32)); break; + case IGMPV3_MODE_IS_INCLUDE: + changed = br_multicast_isinc_allow(pg, grec->grec_src, nsrcs, + sizeof(__be32)); + break; + case IGMPV3_MODE_IS_EXCLUDE: + changed = br_multicast_isexc(pg, grec->grec_src, nsrcs, + sizeof(__be32)); + break; } if (changed) br_mdb_notify(br->dev, mdst, pg, RTM_NEWMDB); @@ -1466,6 +1584,14 @@ static int br_ip6_multicast_mld2_report(struct net_bridge *br, nsrcs, sizeof(struct in6_addr)); break; + case MLD2_MODE_IS_INCLUDE: + changed = br_multicast_isinc_allow(pg, grec->grec_src, nsrcs, + sizeof(struct in6_addr)); + break; + case MLD2_MODE_IS_EXCLUDE: + changed = br_multicast_isexc(pg, grec->grec_src, nsrcs, + sizeof(struct in6_addr)); + break; } if (changed) br_mdb_notify(br->dev, mdst, pg, RTM_NEWMDB);