From patchwork Wed May 12 23:19:31 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Linus_L=C3=BCssing?= X-Patchwork-Id: 436134 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=-13.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS 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 938C0C433B4 for ; Wed, 12 May 2021 23:21:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5761D613AA for ; Wed, 12 May 2021 23:21:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229630AbhELXWs (ORCPT ); Wed, 12 May 2021 19:22:48 -0400 Received: from mail.aperture-lab.de ([116.203.183.178]:50612 "EHLO mail.aperture-lab.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233871AbhELXU7 (ORCPT ); Wed, 12 May 2021 19:20:59 -0400 Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id F06FC3ED8D; Thu, 13 May 2021 01:19:46 +0200 (CEST) From: =?utf-8?q?Linus_L=C3=BCssing?= To: netdev@vger.kernel.org Cc: Roopa Prabhu , Nikolay Aleksandrov , Jakub Kicinski , "David S . Miller" , bridge@lists.linux-foundation.org, linux-kernel@vger.kernel.org, =?utf-8?q?Linus_L=C3=BCssing?= Subject: [net-next v3 01/11] net: bridge: mcast: rename multicast router lists and timers Date: Thu, 13 May 2021 01:19:31 +0200 Message-Id: <20210512231941.19211-2-linus.luessing@c0d3.blue> In-Reply-To: <20210512231941.19211-1-linus.luessing@c0d3.blue> References: <20210512231941.19211-1-linus.luessing@c0d3.blue> MIME-Version: 1.0 X-Last-TLS-Session-Version: TLSv1.2 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org In preparation for the upcoming split of multicast router state into their IPv4 and IPv6 variants, rename the affected variable to the IPv4 version first to avoid some renames in later commits. Signed-off-by: Linus Lüssing Acked-by: Nikolay Aleksandrov --- net/bridge/br_forward.c | 4 ++-- net/bridge/br_mdb.c | 6 ++--- net/bridge/br_multicast.c | 48 +++++++++++++++++++-------------------- net/bridge/br_private.h | 10 ++++---- 4 files changed, 34 insertions(+), 34 deletions(-) diff --git a/net/bridge/br_forward.c b/net/bridge/br_forward.c index 6e9b049..eb9847a 100644 --- a/net/bridge/br_forward.c +++ b/net/bridge/br_forward.c @@ -276,7 +276,7 @@ void br_multicast_flood(struct net_bridge_mdb_entry *mdst, bool allow_mode_include = true; struct hlist_node *rp; - rp = rcu_dereference(hlist_first_rcu(&br->router_list)); + rp = rcu_dereference(hlist_first_rcu(&br->ip4_mc_router_list)); if (mdst) { p = rcu_dereference(mdst->ports); if (br_multicast_should_handle_mode(br, mdst->addr.proto) && @@ -290,7 +290,7 @@ void br_multicast_flood(struct net_bridge_mdb_entry *mdst, struct net_bridge_port *port, *lport, *rport; lport = p ? p->key.port : NULL; - rport = hlist_entry_safe(rp, struct net_bridge_port, rlist); + rport = hlist_entry_safe(rp, struct net_bridge_port, ip4_rlist); if ((unsigned long)lport > (unsigned long)rport) { port = lport; diff --git a/net/bridge/br_mdb.c b/net/bridge/br_mdb.c index 95fa4af..d61def8 100644 --- a/net/bridge/br_mdb.c +++ b/net/bridge/br_mdb.c @@ -23,14 +23,14 @@ static int br_rports_fill_info(struct sk_buff *skb, struct netlink_callback *cb, struct net_bridge_port *p; struct nlattr *nest, *port_nest; - if (!br->multicast_router || hlist_empty(&br->router_list)) + if (!br->multicast_router || hlist_empty(&br->ip4_mc_router_list)) return 0; nest = nla_nest_start_noflag(skb, MDBA_ROUTER); if (nest == NULL) return -EMSGSIZE; - hlist_for_each_entry_rcu(p, &br->router_list, rlist) { + hlist_for_each_entry_rcu(p, &br->ip4_mc_router_list, ip4_rlist) { if (!p) continue; port_nest = nla_nest_start_noflag(skb, MDBA_ROUTER_PORT); @@ -38,7 +38,7 @@ static int br_rports_fill_info(struct sk_buff *skb, struct netlink_callback *cb, goto fail; if (nla_put_nohdr(skb, sizeof(u32), &p->dev->ifindex) || nla_put_u32(skb, MDBA_ROUTER_PATTR_TIMER, - br_timer_value(&p->multicast_router_timer)) || + br_timer_value(&p->ip4_mc_router_timer)) || nla_put_u8(skb, MDBA_ROUTER_PATTR_TYPE, p->multicast_router)) { nla_nest_cancel(skb, port_nest); diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c index 226bb05..6fe93a3 100644 --- a/net/bridge/br_multicast.c +++ b/net/bridge/br_multicast.c @@ -1357,13 +1357,13 @@ static int br_ip6_multicast_add_group(struct net_bridge *br, static void br_multicast_router_expired(struct timer_list *t) { struct net_bridge_port *port = - from_timer(port, t, multicast_router_timer); + from_timer(port, t, ip4_mc_router_timer); struct net_bridge *br = port->br; spin_lock(&br->multicast_lock); if (port->multicast_router == MDB_RTR_TYPE_DISABLED || port->multicast_router == MDB_RTR_TYPE_PERM || - timer_pending(&port->multicast_router_timer)) + timer_pending(&port->ip4_mc_router_timer)) goto out; __del_port_router(port); @@ -1386,12 +1386,12 @@ static void br_mc_router_state_change(struct net_bridge *p, static void br_multicast_local_router_expired(struct timer_list *t) { - struct net_bridge *br = from_timer(br, t, multicast_router_timer); + struct net_bridge *br = from_timer(br, t, ip4_mc_router_timer); spin_lock(&br->multicast_lock); if (br->multicast_router == MDB_RTR_TYPE_DISABLED || br->multicast_router == MDB_RTR_TYPE_PERM || - timer_pending(&br->multicast_router_timer)) + timer_pending(&br->ip4_mc_router_timer)) goto out; br_mc_router_state_change(br, false); @@ -1613,7 +1613,7 @@ int br_multicast_add_port(struct net_bridge_port *port) port->multicast_router = MDB_RTR_TYPE_TEMP_QUERY; port->multicast_eht_hosts_limit = BR_MCAST_DEFAULT_EHT_HOSTS_LIMIT; - timer_setup(&port->multicast_router_timer, + timer_setup(&port->ip4_mc_router_timer, br_multicast_router_expired, 0); timer_setup(&port->ip4_own_query.timer, br_ip4_multicast_port_query_expired, 0); @@ -1649,7 +1649,7 @@ void br_multicast_del_port(struct net_bridge_port *port) hlist_move_list(&br->mcast_gc_list, &deleted_head); spin_unlock_bh(&br->multicast_lock); br_multicast_gc(&deleted_head); - del_timer_sync(&port->multicast_router_timer); + del_timer_sync(&port->ip4_mc_router_timer); free_percpu(port->mcast_stats); } @@ -1674,7 +1674,7 @@ static void __br_multicast_enable_port(struct net_bridge_port *port) br_multicast_enable(&port->ip6_own_query); #endif if (port->multicast_router == MDB_RTR_TYPE_PERM && - hlist_unhashed(&port->rlist)) + hlist_unhashed(&port->ip4_rlist)) br_multicast_add_router(br, port); } @@ -1700,7 +1700,7 @@ void br_multicast_disable_port(struct net_bridge_port *port) __del_port_router(port); - del_timer(&port->multicast_router_timer); + del_timer(&port->ip4_mc_router_timer); del_timer(&port->ip4_own_query.timer); #if IS_ENABLED(CONFIG_IPV6) del_timer(&port->ip6_own_query.timer); @@ -2666,19 +2666,19 @@ static void br_multicast_add_router(struct net_bridge *br, struct net_bridge_port *p; struct hlist_node *slot = NULL; - if (!hlist_unhashed(&port->rlist)) + if (!hlist_unhashed(&port->ip4_rlist)) return; - hlist_for_each_entry(p, &br->router_list, rlist) { + hlist_for_each_entry(p, &br->ip4_mc_router_list, ip4_rlist) { if ((unsigned long) port >= (unsigned long) p) break; - slot = &p->rlist; + slot = &p->ip4_rlist; } if (slot) - hlist_add_behind_rcu(&port->rlist, slot); + hlist_add_behind_rcu(&port->ip4_rlist, slot); else - hlist_add_head_rcu(&port->rlist, &br->router_list); + hlist_add_head_rcu(&port->ip4_rlist, &br->ip4_mc_router_list); br_rtr_notify(br->dev, port, RTM_NEWMDB); br_port_mc_router_state_change(port, true); } @@ -2690,9 +2690,9 @@ static void br_multicast_mark_router(struct net_bridge *br, if (!port) { if (br->multicast_router == MDB_RTR_TYPE_TEMP_QUERY) { - if (!timer_pending(&br->multicast_router_timer)) + if (!timer_pending(&br->ip4_mc_router_timer)) br_mc_router_state_change(br, true); - mod_timer(&br->multicast_router_timer, + mod_timer(&br->ip4_mc_router_timer, now + br->multicast_querier_interval); } return; @@ -2704,7 +2704,7 @@ static void br_multicast_mark_router(struct net_bridge *br, br_multicast_add_router(br, port); - mod_timer(&port->multicast_router_timer, + mod_timer(&port->ip4_mc_router_timer, now + br->multicast_querier_interval); } @@ -3316,7 +3316,7 @@ void br_multicast_init(struct net_bridge *br) br_opt_toggle(br, BROPT_HAS_IPV6_ADDR, true); spin_lock_init(&br->multicast_lock); - timer_setup(&br->multicast_router_timer, + timer_setup(&br->ip4_mc_router_timer, br_multicast_local_router_expired, 0); timer_setup(&br->ip4_other_query.timer, br_ip4_multicast_querier_expired, 0); @@ -3416,7 +3416,7 @@ void br_multicast_open(struct net_bridge *br) void br_multicast_stop(struct net_bridge *br) { - del_timer_sync(&br->multicast_router_timer); + del_timer_sync(&br->ip4_mc_router_timer); del_timer_sync(&br->ip4_other_query.timer); del_timer_sync(&br->ip4_own_query.timer); #if IS_ENABLED(CONFIG_IPV6) @@ -3453,7 +3453,7 @@ int br_multicast_set_router(struct net_bridge *br, unsigned long val) case MDB_RTR_TYPE_DISABLED: case MDB_RTR_TYPE_PERM: br_mc_router_state_change(br, val == MDB_RTR_TYPE_PERM); - del_timer(&br->multicast_router_timer); + del_timer(&br->ip4_mc_router_timer); br->multicast_router = val; err = 0; break; @@ -3472,9 +3472,9 @@ int br_multicast_set_router(struct net_bridge *br, unsigned long val) static void __del_port_router(struct net_bridge_port *p) { - if (hlist_unhashed(&p->rlist)) + if (hlist_unhashed(&p->ip4_rlist)) return; - hlist_del_init_rcu(&p->rlist); + hlist_del_init_rcu(&p->ip4_rlist); br_rtr_notify(p->br->dev, p, RTM_DELMDB); br_port_mc_router_state_change(p, false); @@ -3493,7 +3493,7 @@ int br_multicast_set_port_router(struct net_bridge_port *p, unsigned long val) if (p->multicast_router == val) { /* Refresh the temp router port timer */ if (p->multicast_router == MDB_RTR_TYPE_TEMP) - mod_timer(&p->multicast_router_timer, + mod_timer(&p->ip4_mc_router_timer, now + br->multicast_querier_interval); err = 0; goto unlock; @@ -3502,7 +3502,7 @@ int br_multicast_set_port_router(struct net_bridge_port *p, unsigned long val) case MDB_RTR_TYPE_DISABLED: p->multicast_router = MDB_RTR_TYPE_DISABLED; __del_port_router(p); - del_timer(&p->multicast_router_timer); + del_timer(&p->ip4_mc_router_timer); break; case MDB_RTR_TYPE_TEMP_QUERY: p->multicast_router = MDB_RTR_TYPE_TEMP_QUERY; @@ -3510,7 +3510,7 @@ int br_multicast_set_port_router(struct net_bridge_port *p, unsigned long val) break; case MDB_RTR_TYPE_PERM: p->multicast_router = MDB_RTR_TYPE_PERM; - del_timer(&p->multicast_router_timer); + del_timer(&p->ip4_mc_router_timer); br_multicast_add_router(br, p); break; case MDB_RTR_TYPE_TEMP: diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h index 7ce8a77..26e91d2 100644 --- a/net/bridge/br_private.h +++ b/net/bridge/br_private.h @@ -307,6 +307,8 @@ struct net_bridge_port { #ifdef CONFIG_BRIDGE_IGMP_SNOOPING struct bridge_mcast_own_query ip4_own_query; + struct timer_list ip4_mc_router_timer; + struct hlist_node ip4_rlist; #if IS_ENABLED(CONFIG_IPV6) struct bridge_mcast_own_query ip6_own_query; #endif /* IS_ENABLED(CONFIG_IPV6) */ @@ -314,9 +316,7 @@ struct net_bridge_port { u32 multicast_eht_hosts_cnt; unsigned char multicast_router; struct bridge_mcast_stats __percpu *mcast_stats; - struct timer_list multicast_router_timer; struct hlist_head mglist; - struct hlist_node rlist; #endif #ifdef CONFIG_SYSFS @@ -449,9 +449,9 @@ struct net_bridge { struct hlist_head mcast_gc_list; struct hlist_head mdb_list; - struct hlist_head router_list; - struct timer_list multicast_router_timer; + struct hlist_head ip4_mc_router_list; + struct timer_list ip4_mc_router_timer; struct bridge_mcast_other_query ip4_other_query; struct bridge_mcast_own_query ip4_own_query; struct bridge_mcast_querier ip4_querier; @@ -868,7 +868,7 @@ static inline bool br_multicast_is_router(struct net_bridge *br) { return br->multicast_router == 2 || (br->multicast_router == 1 && - timer_pending(&br->multicast_router_timer)); + timer_pending(&br->ip4_mc_router_timer)); } static inline bool From patchwork Wed May 12 23:19:32 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Linus_L=C3=BCssing?= X-Patchwork-Id: 436133 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=-13.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS 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 4C366C433ED for ; Wed, 12 May 2021 23:27:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 24087613F7 for ; Wed, 12 May 2021 23:27:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235811AbhELXYH (ORCPT ); Wed, 12 May 2021 19:24:07 -0400 Received: from mail.aperture-lab.de ([116.203.183.178]:50648 "EHLO mail.aperture-lab.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233940AbhELXVA (ORCPT ); Wed, 12 May 2021 19:21:00 -0400 Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id EB30D41007; Thu, 13 May 2021 01:19:48 +0200 (CEST) From: =?utf-8?q?Linus_L=C3=BCssing?= To: netdev@vger.kernel.org Cc: Roopa Prabhu , Nikolay Aleksandrov , Jakub Kicinski , "David S . Miller" , bridge@lists.linux-foundation.org, linux-kernel@vger.kernel.org, =?utf-8?q?Linus_L=C3=BCssing?= Subject: [net-next v3 02/11] net: bridge: mcast: add wrappers for router node retrieval Date: Thu, 13 May 2021 01:19:32 +0200 Message-Id: <20210512231941.19211-3-linus.luessing@c0d3.blue> In-Reply-To: <20210512231941.19211-1-linus.luessing@c0d3.blue> References: <20210512231941.19211-1-linus.luessing@c0d3.blue> MIME-Version: 1.0 X-Last-TLS-Session-Version: TLSv1.2 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org In preparation for the upcoming split of multicast router state into their IPv4 and IPv6 variants and to avoid IPv6 #ifdef clutter later add two wrapper functions for router node retrieval in the payload forwarding code. Signed-off-by: Linus Lüssing Acked-by: Nikolay Aleksandrov --- net/bridge/br_forward.c | 5 +++-- net/bridge/br_private.h | 10 ++++++++++ 2 files changed, 13 insertions(+), 2 deletions(-) diff --git a/net/bridge/br_forward.c b/net/bridge/br_forward.c index eb9847a..4e591b1 100644 --- a/net/bridge/br_forward.c +++ b/net/bridge/br_forward.c @@ -276,7 +276,8 @@ void br_multicast_flood(struct net_bridge_mdb_entry *mdst, bool allow_mode_include = true; struct hlist_node *rp; - rp = rcu_dereference(hlist_first_rcu(&br->ip4_mc_router_list)); + rp = br_multicast_get_first_rport_node(br, skb); + if (mdst) { p = rcu_dereference(mdst->ports); if (br_multicast_should_handle_mode(br, mdst->addr.proto) && @@ -290,7 +291,7 @@ void br_multicast_flood(struct net_bridge_mdb_entry *mdst, struct net_bridge_port *port, *lport, *rport; lport = p ? p->key.port : NULL; - rport = hlist_entry_safe(rp, struct net_bridge_port, ip4_rlist); + rport = br_multicast_rport_from_node(rp, skb); if ((unsigned long)lport > (unsigned long)rport) { port = lport; diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h index 26e91d2..5b9a6b2 100644 --- a/net/bridge/br_private.h +++ b/net/bridge/br_private.h @@ -864,6 +864,16 @@ static inline bool br_group_is_l2(const struct br_ip *group) #define mlock_dereference(X, br) \ rcu_dereference_protected(X, lockdep_is_held(&br->multicast_lock)) +static inline struct hlist_node * +br_multicast_get_first_rport_node(struct net_bridge *b, struct sk_buff *skb) { + return rcu_dereference(hlist_first_rcu(&b->ip4_mc_router_list)); +} + +static inline struct net_bridge_port * +br_multicast_rport_from_node(struct hlist_node *rp, struct sk_buff *skb) { + return hlist_entry_safe(rp, struct net_bridge_port, ip4_rlist); +} + static inline bool br_multicast_is_router(struct net_bridge *br) { return br->multicast_router == 2 || From patchwork Wed May 12 23:19:33 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Linus_L=C3=BCssing?= X-Patchwork-Id: 437735 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=-13.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS 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 BF73EC43460 for ; Wed, 12 May 2021 23:27:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8854761421 for ; Wed, 12 May 2021 23:27:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236822AbhELXYf (ORCPT ); Wed, 12 May 2021 19:24:35 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39882 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234089AbhELXVG (ORCPT ); Wed, 12 May 2021 19:21:06 -0400 Received: from mail.aperture-lab.de (mail.aperture-lab.de [IPv6:2a01:4f8:c2c:665b::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4A865C061763; Wed, 12 May 2021 16:19:51 -0700 (PDT) Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id D4C1341008; Thu, 13 May 2021 01:19:49 +0200 (CEST) From: =?utf-8?q?Linus_L=C3=BCssing?= To: netdev@vger.kernel.org Cc: Roopa Prabhu , Nikolay Aleksandrov , Jakub Kicinski , "David S . Miller" , bridge@lists.linux-foundation.org, linux-kernel@vger.kernel.org, =?utf-8?q?Linus_L=C3=BCssing?= Subject: [net-next v3 03/11] net: bridge: mcast: prepare mdb netlink for mcast router split Date: Thu, 13 May 2021 01:19:33 +0200 Message-Id: <20210512231941.19211-4-linus.luessing@c0d3.blue> In-Reply-To: <20210512231941.19211-1-linus.luessing@c0d3.blue> References: <20210512231941.19211-1-linus.luessing@c0d3.blue> MIME-Version: 1.0 X-Last-TLS-Session-Version: TLSv1.2 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org In preparation for the upcoming split of multicast router state into their IPv4 and IPv6 variants and to avoid IPv6 #ifdef clutter later add some inline functions for the protocol specific parts in the mdb router netlink code. Also the we need iterate over the port instead of router list to be able put one router port entry with both the IPv4 and IPv6 multicast router info later. Signed-off-by: Linus Lüssing --- net/bridge/br_mdb.c | 39 ++++++++++++++++++++++++++++++++++----- 1 file changed, 34 insertions(+), 5 deletions(-) diff --git a/net/bridge/br_mdb.c b/net/bridge/br_mdb.c index d61def8..482edb9 100644 --- a/net/bridge/br_mdb.c +++ b/net/bridge/br_mdb.c @@ -16,29 +16,58 @@ #include "br_private.h" +static bool br_rports_have_mc_router(struct net_bridge *br) +{ + return !hlist_empty(&br->ip4_mc_router_list); +} + +static bool +br_ip4_rports_get_timer(struct net_bridge_port *port, unsigned long *timer) +{ + *timer = br_timer_value(&port->ip4_mc_router_timer); + return !hlist_unhashed(&port->ip4_rlist); +} + +static bool +br_ip6_rports_get_timer(struct net_bridge_port *port, unsigned long *timer) +{ + *timer = 0; + return false; +} + static int br_rports_fill_info(struct sk_buff *skb, struct netlink_callback *cb, struct net_device *dev) { struct net_bridge *br = netdev_priv(dev); - struct net_bridge_port *p; + bool have_ip4_mc_rtr, have_ip6_mc_rtr; + unsigned long ip4_timer, ip6_timer; struct nlattr *nest, *port_nest; + struct net_bridge_port *p; - if (!br->multicast_router || hlist_empty(&br->ip4_mc_router_list)) + if (!br->multicast_router) + return 0; + + if (!br_rports_have_mc_router(br)) return 0; nest = nla_nest_start_noflag(skb, MDBA_ROUTER); if (nest == NULL) return -EMSGSIZE; - hlist_for_each_entry_rcu(p, &br->ip4_mc_router_list, ip4_rlist) { - if (!p) + list_for_each_entry_rcu(p, &br->port_list, list) { + have_ip4_mc_rtr = br_ip4_rports_get_timer(p, &ip4_timer); + have_ip6_mc_rtr = br_ip6_rports_get_timer(p, &ip6_timer); + + if (!have_ip4_mc_rtr && !have_ip6_mc_rtr) continue; + port_nest = nla_nest_start_noflag(skb, MDBA_ROUTER_PORT); if (!port_nest) goto fail; + if (nla_put_nohdr(skb, sizeof(u32), &p->dev->ifindex) || nla_put_u32(skb, MDBA_ROUTER_PATTR_TIMER, - br_timer_value(&p->ip4_mc_router_timer)) || + max(ip4_timer, ip6_timer)) || nla_put_u8(skb, MDBA_ROUTER_PATTR_TYPE, p->multicast_router)) { nla_nest_cancel(skb, port_nest); From patchwork Wed May 12 23:19:34 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Linus_L=C3=BCssing?= X-Patchwork-Id: 437734 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=-13.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS 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 80CA1C43460 for ; Wed, 12 May 2021 23:28:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5EC2C613F6 for ; Wed, 12 May 2021 23:28:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238194AbhELXZc (ORCPT ); Wed, 12 May 2021 19:25:32 -0400 Received: from mail.aperture-lab.de ([116.203.183.178]:50726 "EHLO mail.aperture-lab.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234014AbhELXVJ (ORCPT ); Wed, 12 May 2021 19:21:09 -0400 Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id D324541009; Thu, 13 May 2021 01:19:50 +0200 (CEST) From: =?utf-8?q?Linus_L=C3=BCssing?= To: netdev@vger.kernel.org Cc: Roopa Prabhu , Nikolay Aleksandrov , Jakub Kicinski , "David S . Miller" , bridge@lists.linux-foundation.org, linux-kernel@vger.kernel.org, =?utf-8?q?Linus_L=C3=BCssing?= Subject: [net-next v3 04/11] net: bridge: mcast: prepare query reception for mcast router split Date: Thu, 13 May 2021 01:19:34 +0200 Message-Id: <20210512231941.19211-5-linus.luessing@c0d3.blue> In-Reply-To: <20210512231941.19211-1-linus.luessing@c0d3.blue> References: <20210512231941.19211-1-linus.luessing@c0d3.blue> MIME-Version: 1.0 X-Last-TLS-Session-Version: TLSv1.2 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org In preparation for the upcoming split of multicast router state into their IPv4 and IPv6 variants and as the br_multicast_mark_router() will be split for that remove the select querier wrapper and instead add ip4 and ip6 variants for br_multicast_query_received(). Signed-off-by: Linus Lüssing Acked-by: Nikolay Aleksandrov --- net/bridge/br_multicast.c | 53 ++++++++++++++++++++------------------- 1 file changed, 27 insertions(+), 26 deletions(-) diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c index 6fe93a3..7edbbc9 100644 --- a/net/bridge/br_multicast.c +++ b/net/bridge/br_multicast.c @@ -2615,22 +2615,6 @@ update: } #endif -static bool br_multicast_select_querier(struct net_bridge *br, - struct net_bridge_port *port, - struct br_ip *saddr) -{ - switch (saddr->proto) { - case htons(ETH_P_IP): - return br_ip4_multicast_select_querier(br, port, saddr->src.ip4); -#if IS_ENABLED(CONFIG_IPV6) - case htons(ETH_P_IPV6): - return br_ip6_multicast_select_querier(br, port, &saddr->src.ip6); -#endif - } - - return false; -} - static void br_multicast_update_query_timer(struct net_bridge *br, struct bridge_mcast_other_query *query, @@ -2708,19 +2692,36 @@ static void br_multicast_mark_router(struct net_bridge *br, now + br->multicast_querier_interval); } -static void br_multicast_query_received(struct net_bridge *br, - struct net_bridge_port *port, - struct bridge_mcast_other_query *query, - struct br_ip *saddr, - unsigned long max_delay) +static void +br_ip4_multicast_query_received(struct net_bridge *br, + struct net_bridge_port *port, + struct bridge_mcast_other_query *query, + struct br_ip *saddr, + unsigned long max_delay) { - if (!br_multicast_select_querier(br, port, saddr)) + if (!br_ip4_multicast_select_querier(br, port, saddr->src.ip4)) return; br_multicast_update_query_timer(br, query, max_delay); br_multicast_mark_router(br, port); } +#if IS_ENABLED(CONFIG_IPV6) +static void +br_ip6_multicast_query_received(struct net_bridge *br, + struct net_bridge_port *port, + struct bridge_mcast_other_query *query, + struct br_ip *saddr, + unsigned long max_delay) +{ + if (!br_ip6_multicast_select_querier(br, port, &saddr->src.ip6)) + return; + + br_multicast_update_query_timer(br, query, max_delay); + br_multicast_mark_router(br, port); +} +#endif + static void br_ip4_multicast_query(struct net_bridge *br, struct net_bridge_port *port, struct sk_buff *skb, @@ -2768,8 +2769,8 @@ static void br_ip4_multicast_query(struct net_bridge *br, saddr.proto = htons(ETH_P_IP); saddr.src.ip4 = iph->saddr; - br_multicast_query_received(br, port, &br->ip4_other_query, - &saddr, max_delay); + br_ip4_multicast_query_received(br, port, &br->ip4_other_query, + &saddr, max_delay); goto out; } @@ -2856,8 +2857,8 @@ static int br_ip6_multicast_query(struct net_bridge *br, saddr.proto = htons(ETH_P_IPV6); saddr.src.ip6 = ipv6_hdr(skb)->saddr; - br_multicast_query_received(br, port, &br->ip6_other_query, - &saddr, max_delay); + br_ip6_multicast_query_received(br, port, &br->ip6_other_query, + &saddr, max_delay); goto out; } else if (!group) { goto out; From patchwork Wed May 12 23:19:35 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Linus_L=C3=BCssing?= X-Patchwork-Id: 436130 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=-13.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS 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 B4F6AC4360C for ; Wed, 12 May 2021 23:28:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A89CC613F7 for ; Wed, 12 May 2021 23:28:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239124AbhELX0E (ORCPT ); Wed, 12 May 2021 19:26:04 -0400 Received: from mail.aperture-lab.de ([116.203.183.178]:50760 "EHLO mail.aperture-lab.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234120AbhELXVK (ORCPT ); Wed, 12 May 2021 19:21:10 -0400 Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id BB3EF4100A; Thu, 13 May 2021 01:19:51 +0200 (CEST) From: =?utf-8?q?Linus_L=C3=BCssing?= To: netdev@vger.kernel.org Cc: Roopa Prabhu , Nikolay Aleksandrov , Jakub Kicinski , "David S . Miller" , bridge@lists.linux-foundation.org, linux-kernel@vger.kernel.org, =?utf-8?q?Linus_L=C3=BCssing?= Subject: [net-next v3 05/11] net: bridge: mcast: prepare is-router function for mcast router split Date: Thu, 13 May 2021 01:19:35 +0200 Message-Id: <20210512231941.19211-6-linus.luessing@c0d3.blue> In-Reply-To: <20210512231941.19211-1-linus.luessing@c0d3.blue> References: <20210512231941.19211-1-linus.luessing@c0d3.blue> MIME-Version: 1.0 X-Last-TLS-Session-Version: TLSv1.2 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org In preparation for the upcoming split of multicast router state into their IPv4 and IPv6 variants make br_multicast_is_router() protocol family aware. Note that for now br_ip6_multicast_is_router() uses the currently still common ip4_mc_router_timer for now. It will be renamed to ip6_mc_router_timer later when the split is performed. While at it also renames the "1" and "2" constants in br_multicast_is_router() to the MDB_RTR_TYPE_TEMP_QUERY and MDB_RTR_TYPE_PERM enums. Signed-off-by: Linus Lüssing Acked-by: Nikolay Aleksandrov --- net/bridge/br_input.c | 2 +- net/bridge/br_multicast.c | 5 +++-- net/bridge/br_private.h | 37 +++++++++++++++++++++++++++++++++---- 3 files changed, 37 insertions(+), 7 deletions(-) diff --git a/net/bridge/br_input.c b/net/bridge/br_input.c index 8875e95..1f50630 100644 --- a/net/bridge/br_input.c +++ b/net/bridge/br_input.c @@ -132,7 +132,7 @@ int br_handle_frame_finish(struct net *net, struct sock *sk, struct sk_buff *skb if ((mdst || BR_INPUT_SKB_CB_MROUTERS_ONLY(skb)) && br_multicast_querier_exists(br, eth_hdr(skb), mdst)) { if ((mdst && mdst->host_joined) || - br_multicast_is_router(br)) { + br_multicast_is_router(br, skb)) { local_rcv = true; br->dev->stats.multicast++; } diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c index 7edbbc9..048b5b9 100644 --- a/net/bridge/br_multicast.c +++ b/net/bridge/br_multicast.c @@ -1391,7 +1391,8 @@ static void br_multicast_local_router_expired(struct timer_list *t) spin_lock(&br->multicast_lock); if (br->multicast_router == MDB_RTR_TYPE_DISABLED || br->multicast_router == MDB_RTR_TYPE_PERM || - timer_pending(&br->ip4_mc_router_timer)) + br_ip4_multicast_is_router(br) || + br_ip6_multicast_is_router(br)) goto out; br_mc_router_state_change(br, false); @@ -3622,7 +3623,7 @@ bool br_multicast_router(const struct net_device *dev) bool is_router; spin_lock_bh(&br->multicast_lock); - is_router = br_multicast_is_router(br); + is_router = br_multicast_is_router(br, NULL); spin_unlock_bh(&br->multicast_lock); return is_router; } diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h index 5b9a6b2..41ed3fe 100644 --- a/net/bridge/br_private.h +++ b/net/bridge/br_private.h @@ -874,11 +874,40 @@ br_multicast_rport_from_node(struct hlist_node *rp, struct sk_buff *skb) { return hlist_entry_safe(rp, struct net_bridge_port, ip4_rlist); } -static inline bool br_multicast_is_router(struct net_bridge *br) +static inline bool br_ip4_multicast_is_router(struct net_bridge *br) { - return br->multicast_router == 2 || - (br->multicast_router == 1 && - timer_pending(&br->ip4_mc_router_timer)); + return timer_pending(&br->ip4_mc_router_timer); +} + +static inline bool br_ip6_multicast_is_router(struct net_bridge *br) +{ +#if IS_ENABLED(CONFIG_IPV6) + return timer_pending(&br->ip4_mc_router_timer); +#else + return false; +#endif +} + +static inline bool +br_multicast_is_router(struct net_bridge *br, struct sk_buff *skb) +{ + switch (br->multicast_router) { + case MDB_RTR_TYPE_PERM: + return true; + case MDB_RTR_TYPE_TEMP_QUERY: + if (skb) { + if (skb->protocol == htons(ETH_P_IP)) + return br_ip4_multicast_is_router(br); + else if (skb->protocol == htons(ETH_P_IPV6)) + return br_ip6_multicast_is_router(br); + } else { + return br_ip4_multicast_is_router(br) || + br_ip6_multicast_is_router(br); + } + fallthrough; + default: + return false; + } } static inline bool From patchwork Wed May 12 23:19:36 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Linus_L=C3=BCssing?= X-Patchwork-Id: 436132 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=-13.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS 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 B4FE6C433B4 for ; Wed, 12 May 2021 23:28:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 962BA613F6 for ; Wed, 12 May 2021 23:28:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237263AbhELXZE (ORCPT ); Wed, 12 May 2021 19:25:04 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39894 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234091AbhELXVG (ORCPT ); Wed, 12 May 2021 19:21:06 -0400 Received: from mail.aperture-lab.de (mail.aperture-lab.de [IPv6:2a01:4f8:c2c:665b::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F3C1AC06138A; Wed, 12 May 2021 16:19:54 -0700 (PDT) Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id AA08B4100B; Thu, 13 May 2021 01:19:52 +0200 (CEST) From: =?utf-8?q?Linus_L=C3=BCssing?= To: netdev@vger.kernel.org Cc: Roopa Prabhu , Nikolay Aleksandrov , Jakub Kicinski , "David S . Miller" , bridge@lists.linux-foundation.org, linux-kernel@vger.kernel.org, =?utf-8?q?Linus_L=C3=BCssing?= Subject: [net-next v3 06/11] net: bridge: mcast: prepare expiry functions for mcast router split Date: Thu, 13 May 2021 01:19:36 +0200 Message-Id: <20210512231941.19211-7-linus.luessing@c0d3.blue> In-Reply-To: <20210512231941.19211-1-linus.luessing@c0d3.blue> References: <20210512231941.19211-1-linus.luessing@c0d3.blue> MIME-Version: 1.0 X-Last-TLS-Session-Version: TLSv1.2 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org In preparation for the upcoming split of multicast router state into their IPv4 and IPv6 variants move the protocol specific timer access to an ip4 wrapper function. Signed-off-by: Linus Lüssing Acked-by: Nikolay Aleksandrov --- net/bridge/br_multicast.c | 31 ++++++++++++++++++++++--------- 1 file changed, 22 insertions(+), 9 deletions(-) diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c index 048b5b9..7815991 100644 --- a/net/bridge/br_multicast.c +++ b/net/bridge/br_multicast.c @@ -1354,16 +1354,16 @@ static int br_ip6_multicast_add_group(struct net_bridge *br, } #endif -static void br_multicast_router_expired(struct timer_list *t) +static void br_multicast_router_expired(struct net_bridge_port *port, + struct timer_list *t, + struct hlist_node *rlist) { - struct net_bridge_port *port = - from_timer(port, t, ip4_mc_router_timer); struct net_bridge *br = port->br; spin_lock(&br->multicast_lock); if (port->multicast_router == MDB_RTR_TYPE_DISABLED || port->multicast_router == MDB_RTR_TYPE_PERM || - timer_pending(&port->ip4_mc_router_timer)) + timer_pending(t)) goto out; __del_port_router(port); @@ -1371,6 +1371,13 @@ out: spin_unlock(&br->multicast_lock); } +static void br_ip4_multicast_router_expired(struct timer_list *t) +{ + struct net_bridge_port *port = from_timer(port, t, ip4_mc_router_timer); + + br_multicast_router_expired(port, t, &port->ip4_rlist); +} + static void br_mc_router_state_change(struct net_bridge *p, bool is_mc_router) { @@ -1384,10 +1391,9 @@ static void br_mc_router_state_change(struct net_bridge *p, switchdev_port_attr_set(p->dev, &attr, NULL); } -static void br_multicast_local_router_expired(struct timer_list *t) +static void br_multicast_local_router_expired(struct net_bridge *br, + struct timer_list *timer) { - struct net_bridge *br = from_timer(br, t, ip4_mc_router_timer); - spin_lock(&br->multicast_lock); if (br->multicast_router == MDB_RTR_TYPE_DISABLED || br->multicast_router == MDB_RTR_TYPE_PERM || @@ -1400,6 +1406,13 @@ out: spin_unlock(&br->multicast_lock); } +static void br_ip4_multicast_local_router_expired(struct timer_list *t) +{ + struct net_bridge *br = from_timer(br, t, ip4_mc_router_timer); + + br_multicast_local_router_expired(br, t); +} + static void br_multicast_querier_expired(struct net_bridge *br, struct bridge_mcast_own_query *query) { @@ -1615,7 +1628,7 @@ int br_multicast_add_port(struct net_bridge_port *port) port->multicast_eht_hosts_limit = BR_MCAST_DEFAULT_EHT_HOSTS_LIMIT; timer_setup(&port->ip4_mc_router_timer, - br_multicast_router_expired, 0); + br_ip4_multicast_router_expired, 0); timer_setup(&port->ip4_own_query.timer, br_ip4_multicast_port_query_expired, 0); #if IS_ENABLED(CONFIG_IPV6) @@ -3319,7 +3332,7 @@ void br_multicast_init(struct net_bridge *br) spin_lock_init(&br->multicast_lock); timer_setup(&br->ip4_mc_router_timer, - br_multicast_local_router_expired, 0); + br_ip4_multicast_local_router_expired, 0); timer_setup(&br->ip4_other_query.timer, br_ip4_multicast_querier_expired, 0); timer_setup(&br->ip4_own_query.timer, From patchwork Wed May 12 23:19:37 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Linus_L=C3=BCssing?= X-Patchwork-Id: 437732 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=-13.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS 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 DA6ACC43617 for ; Wed, 12 May 2021 23:28:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CEE50613F6 for ; Wed, 12 May 2021 23:28:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239521AbhELX0O (ORCPT ); Wed, 12 May 2021 19:26:14 -0400 Received: from mail.aperture-lab.de ([116.203.183.178]:50830 "EHLO mail.aperture-lab.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234169AbhELXVM (ORCPT ); Wed, 12 May 2021 19:21:12 -0400 Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id A1D274100C; Thu, 13 May 2021 01:19:53 +0200 (CEST) From: =?utf-8?q?Linus_L=C3=BCssing?= To: netdev@vger.kernel.org Cc: Roopa Prabhu , Nikolay Aleksandrov , Jakub Kicinski , "David S . Miller" , bridge@lists.linux-foundation.org, linux-kernel@vger.kernel.org, =?utf-8?q?Linus_L=C3=BCssing?= Subject: [net-next v3 07/11] net: bridge: mcast: prepare add-router function for mcast router split Date: Thu, 13 May 2021 01:19:37 +0200 Message-Id: <20210512231941.19211-8-linus.luessing@c0d3.blue> In-Reply-To: <20210512231941.19211-1-linus.luessing@c0d3.blue> References: <20210512231941.19211-1-linus.luessing@c0d3.blue> MIME-Version: 1.0 X-Last-TLS-Session-Version: TLSv1.2 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org In preparation for the upcoming split of multicast router state into their IPv4 and IPv6 variants move the protocol specific router list access to an ip4 wrapper function. Signed-off-by: Linus Lüssing Acked-by: Nikolay Aleksandrov --- net/bridge/br_multicast.c | 59 +++++++++++++++++++++++++++------------ 1 file changed, 41 insertions(+), 18 deletions(-) diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c index 7815991..1d55709 100644 --- a/net/bridge/br_multicast.c +++ b/net/bridge/br_multicast.c @@ -51,8 +51,8 @@ static const struct rhashtable_params br_sg_port_rht_params = { static void br_multicast_start_querier(struct net_bridge *br, struct bridge_mcast_own_query *query); -static void br_multicast_add_router(struct net_bridge *br, - struct net_bridge_port *port); +static void br_ip4_multicast_add_router(struct net_bridge *br, + struct net_bridge_port *port); static void br_ip4_multicast_leave_group(struct net_bridge *br, struct net_bridge_port *port, __be32 group, @@ -1689,7 +1689,7 @@ static void __br_multicast_enable_port(struct net_bridge_port *port) #endif if (port->multicast_router == MDB_RTR_TYPE_PERM && hlist_unhashed(&port->ip4_rlist)) - br_multicast_add_router(br, port); + br_ip4_multicast_add_router(br, port); } void br_multicast_enable_port(struct net_bridge_port *port) @@ -2659,28 +2659,51 @@ static void br_port_mc_router_state_change(struct net_bridge_port *p, * and locked by br->multicast_lock and RCU */ static void br_multicast_add_router(struct net_bridge *br, - struct net_bridge_port *port) + struct net_bridge_port *port, + struct hlist_node *slot, + struct hlist_node *rlist, + struct hlist_head *mc_router_list) { - struct net_bridge_port *p; - struct hlist_node *slot = NULL; - - if (!hlist_unhashed(&port->ip4_rlist)) + if (!hlist_unhashed(rlist)) return; - hlist_for_each_entry(p, &br->ip4_mc_router_list, ip4_rlist) { - if ((unsigned long) port >= (unsigned long) p) - break; - slot = &p->ip4_rlist; - } - if (slot) - hlist_add_behind_rcu(&port->ip4_rlist, slot); + hlist_add_behind_rcu(rlist, slot); else - hlist_add_head_rcu(&port->ip4_rlist, &br->ip4_mc_router_list); + hlist_add_head_rcu(rlist, mc_router_list); + br_rtr_notify(br->dev, port, RTM_NEWMDB); br_port_mc_router_state_change(port, true); } +static struct hlist_node * +br_ip4_multicast_get_rport_slot(struct net_bridge *br, struct net_bridge_port *port) +{ + struct hlist_node *slot = NULL; + struct net_bridge_port *p; + + hlist_for_each_entry(p, &br->ip4_mc_router_list, ip4_rlist) { + if ((unsigned long)port >= (unsigned long)p) + break; + slot = &p->ip4_rlist; + } + + return slot; +} + +/* Add port to router_list + * list is maintained ordered by pointer value + * and locked by br->multicast_lock and RCU + */ +static void br_ip4_multicast_add_router(struct net_bridge *br, + struct net_bridge_port *port) +{ + struct hlist_node *slot = br_ip4_multicast_get_rport_slot(br, port); + + br_multicast_add_router(br, port, slot, &port->ip4_rlist, + &br->ip4_mc_router_list); +} + static void br_multicast_mark_router(struct net_bridge *br, struct net_bridge_port *port) { @@ -2700,7 +2723,7 @@ static void br_multicast_mark_router(struct net_bridge *br, port->multicast_router == MDB_RTR_TYPE_PERM) return; - br_multicast_add_router(br, port); + br_ip4_multicast_add_router(br, port); mod_timer(&port->ip4_mc_router_timer, now + br->multicast_querier_interval); @@ -3526,7 +3549,7 @@ int br_multicast_set_port_router(struct net_bridge_port *p, unsigned long val) case MDB_RTR_TYPE_PERM: p->multicast_router = MDB_RTR_TYPE_PERM; del_timer(&p->ip4_mc_router_timer); - br_multicast_add_router(br, p); + br_ip4_multicast_add_router(br, p); break; case MDB_RTR_TYPE_TEMP: p->multicast_router = MDB_RTR_TYPE_TEMP; From patchwork Wed May 12 23:19:38 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Linus_L=C3=BCssing?= X-Patchwork-Id: 436131 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=-13.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS 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 523D5C43461 for ; Wed, 12 May 2021 23:28:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 38A7C613F7 for ; Wed, 12 May 2021 23:28:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237764AbhELXZS (ORCPT ); Wed, 12 May 2021 19:25:18 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39772 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234175AbhELXVJ (ORCPT ); Wed, 12 May 2021 19:21:09 -0400 Received: from mail.aperture-lab.de (mail.aperture-lab.de [IPv6:2a01:4f8:c2c:665b::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 236BCC06138E; Wed, 12 May 2021 16:19:56 -0700 (PDT) Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id E09484100D; Thu, 13 May 2021 01:19:54 +0200 (CEST) From: =?utf-8?q?Linus_L=C3=BCssing?= To: netdev@vger.kernel.org Cc: Roopa Prabhu , Nikolay Aleksandrov , Jakub Kicinski , "David S . Miller" , bridge@lists.linux-foundation.org, linux-kernel@vger.kernel.org, =?utf-8?q?Linus_L=C3=BCssing?= Subject: [net-next v3 08/11] net: bridge: mcast: split router port del+notify for mcast router split Date: Thu, 13 May 2021 01:19:38 +0200 Message-Id: <20210512231941.19211-9-linus.luessing@c0d3.blue> In-Reply-To: <20210512231941.19211-1-linus.luessing@c0d3.blue> References: <20210512231941.19211-1-linus.luessing@c0d3.blue> MIME-Version: 1.0 X-Last-TLS-Session-Version: TLSv1.2 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org In preparation for the upcoming split of multicast router state into their IPv4 and IPv6 variants split router port deletion and notification into two functions. When we disable a port for instance later we want to only send one notification to switchdev and netlink for compatibility and want to avoid sending one for IPv4 and one for IPv6. For that the split is needed. Signed-off-by: Linus Lüssing Acked-by: Nikolay Aleksandrov --- net/bridge/br_multicast.c | 40 ++++++++++++++++++++++++++++++--------- 1 file changed, 31 insertions(+), 9 deletions(-) diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c index 1d55709..01a1de4 100644 --- a/net/bridge/br_multicast.c +++ b/net/bridge/br_multicast.c @@ -60,7 +60,8 @@ static void br_ip4_multicast_leave_group(struct net_bridge *br, const unsigned char *src); static void br_multicast_port_group_rexmit(struct timer_list *t); -static void __del_port_router(struct net_bridge_port *p); +static void +br_multicast_rport_del_notify(struct net_bridge_port *p, bool deleted); #if IS_ENABLED(CONFIG_IPV6) static void br_ip6_multicast_leave_group(struct net_bridge *br, struct net_bridge_port *port, @@ -1354,11 +1355,26 @@ static int br_ip6_multicast_add_group(struct net_bridge *br, } #endif +static bool br_multicast_rport_del(struct hlist_node *rlist) +{ + if (hlist_unhashed(rlist)) + return false; + + hlist_del_init_rcu(rlist); + return true; +} + +static bool br_ip4_multicast_rport_del(struct net_bridge_port *p) +{ + return br_multicast_rport_del(&p->ip4_rlist); +} + static void br_multicast_router_expired(struct net_bridge_port *port, struct timer_list *t, struct hlist_node *rlist) { struct net_bridge *br = port->br; + bool del; spin_lock(&br->multicast_lock); if (port->multicast_router == MDB_RTR_TYPE_DISABLED || @@ -1366,7 +1382,8 @@ static void br_multicast_router_expired(struct net_bridge_port *port, timer_pending(t)) goto out; - __del_port_router(port); + del = br_multicast_rport_del(rlist); + br_multicast_rport_del_notify(port, del); out: spin_unlock(&br->multicast_lock); } @@ -1706,19 +1723,20 @@ void br_multicast_disable_port(struct net_bridge_port *port) struct net_bridge *br = port->br; struct net_bridge_port_group *pg; struct hlist_node *n; + bool del = false; spin_lock(&br->multicast_lock); hlist_for_each_entry_safe(pg, n, &port->mglist, mglist) if (!(pg->flags & MDB_PG_FLAGS_PERMANENT)) br_multicast_find_del_pg(br, pg); - __del_port_router(port); - + del |= br_ip4_multicast_rport_del(port); del_timer(&port->ip4_mc_router_timer); del_timer(&port->ip4_own_query.timer); #if IS_ENABLED(CONFIG_IPV6) del_timer(&port->ip6_own_query.timer); #endif + br_multicast_rport_del_notify(port, del); spin_unlock(&br->multicast_lock); } @@ -3508,11 +3526,12 @@ int br_multicast_set_router(struct net_bridge *br, unsigned long val) return err; } -static void __del_port_router(struct net_bridge_port *p) +static void +br_multicast_rport_del_notify(struct net_bridge_port *p, bool deleted) { - if (hlist_unhashed(&p->ip4_rlist)) + if (!deleted) return; - hlist_del_init_rcu(&p->ip4_rlist); + br_rtr_notify(p->br->dev, p, RTM_DELMDB); br_port_mc_router_state_change(p, false); @@ -3526,6 +3545,7 @@ int br_multicast_set_port_router(struct net_bridge_port *p, unsigned long val) struct net_bridge *br = p->br; unsigned long now = jiffies; int err = -EINVAL; + bool del = false; spin_lock(&br->multicast_lock); if (p->multicast_router == val) { @@ -3539,12 +3559,14 @@ int br_multicast_set_port_router(struct net_bridge_port *p, unsigned long val) switch (val) { case MDB_RTR_TYPE_DISABLED: p->multicast_router = MDB_RTR_TYPE_DISABLED; - __del_port_router(p); + del |= br_ip4_multicast_rport_del(p); del_timer(&p->ip4_mc_router_timer); + br_multicast_rport_del_notify(p, del); break; case MDB_RTR_TYPE_TEMP_QUERY: p->multicast_router = MDB_RTR_TYPE_TEMP_QUERY; - __del_port_router(p); + del |= br_ip4_multicast_rport_del(p); + br_multicast_rport_del_notify(p, del); break; case MDB_RTR_TYPE_PERM: p->multicast_router = MDB_RTR_TYPE_PERM; From patchwork Wed May 12 23:19:39 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Linus_L=C3=BCssing?= X-Patchwork-Id: 437731 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=-13.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS 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 02C8BC43619 for ; Wed, 12 May 2021 23:28:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id EB638613F6 for ; Wed, 12 May 2021 23:28:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239649AbhELX0a (ORCPT ); Wed, 12 May 2021 19:26:30 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39910 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234220AbhELXVL (ORCPT ); Wed, 12 May 2021 19:21:11 -0400 Received: from mail.aperture-lab.de (mail.aperture-lab.de [IPv6:2a01:4f8:c2c:665b::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1F554C061574; Wed, 12 May 2021 16:19:58 -0700 (PDT) Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id D29E74100E; Thu, 13 May 2021 01:19:55 +0200 (CEST) From: =?utf-8?q?Linus_L=C3=BCssing?= To: netdev@vger.kernel.org Cc: Roopa Prabhu , Nikolay Aleksandrov , Jakub Kicinski , "David S . Miller" , bridge@lists.linux-foundation.org, linux-kernel@vger.kernel.org, =?utf-8?q?Linus_L=C3=BCssing?= Subject: [net-next v3 09/11] net: bridge: mcast: split multicast router state for IPv4 and IPv6 Date: Thu, 13 May 2021 01:19:39 +0200 Message-Id: <20210512231941.19211-10-linus.luessing@c0d3.blue> In-Reply-To: <20210512231941.19211-1-linus.luessing@c0d3.blue> References: <20210512231941.19211-1-linus.luessing@c0d3.blue> MIME-Version: 1.0 X-Last-TLS-Session-Version: TLSv1.2 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org A multicast router for IPv4 does not imply that the same host also is a multicast router for IPv6 and vice versa. To reduce multicast traffic when a host is only a multicast router for one of these two protocol families, keep router state for IPv4 and IPv6 separately. Similar to how querier state is kept separately. For backwards compatibility for netlink and switchdev notifications these two will still only notify if a port switched from either no IPv4/IPv6 multicast router to any IPv4/IPv6 multicast router or the other way round. However a full netlink MDB router dump will now also include a multicast router timeout for both IPv4 and IPv6. Signed-off-by: Linus Lüssing Acked-by: Nikolay Aleksandrov --- net/bridge/br_mdb.c | 10 ++ net/bridge/br_multicast.c | 197 ++++++++++++++++++++++++++++++++++---- net/bridge/br_private.h | 14 ++- 3 files changed, 201 insertions(+), 20 deletions(-) diff --git a/net/bridge/br_mdb.c b/net/bridge/br_mdb.c index 482edb9..10c416c 100644 --- a/net/bridge/br_mdb.c +++ b/net/bridge/br_mdb.c @@ -18,7 +18,12 @@ static bool br_rports_have_mc_router(struct net_bridge *br) { +#if IS_ENABLED(CONFIG_IPV6) + return !hlist_empty(&br->ip4_mc_router_list) || + !hlist_empty(&br->ip6_mc_router_list); +#else return !hlist_empty(&br->ip4_mc_router_list); +#endif } static bool @@ -31,8 +36,13 @@ br_ip4_rports_get_timer(struct net_bridge_port *port, unsigned long *timer) static bool br_ip6_rports_get_timer(struct net_bridge_port *port, unsigned long *timer) { +#if IS_ENABLED(CONFIG_IPV6) + *timer = br_timer_value(&port->ip6_mc_router_timer); + return !hlist_unhashed(&port->ip6_rlist); +#else *timer = 0; return false; +#endif } static int br_rports_fill_info(struct sk_buff *skb, struct netlink_callback *cb, diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c index 01a1de4..4448490 100644 --- a/net/bridge/br_multicast.c +++ b/net/bridge/br_multicast.c @@ -63,6 +63,8 @@ static void br_multicast_port_group_rexmit(struct timer_list *t); static void br_multicast_rport_del_notify(struct net_bridge_port *p, bool deleted); #if IS_ENABLED(CONFIG_IPV6) +static void br_ip6_multicast_add_router(struct net_bridge *br, + struct net_bridge_port *port); static void br_ip6_multicast_leave_group(struct net_bridge *br, struct net_bridge_port *port, const struct in6_addr *group, @@ -1369,6 +1371,15 @@ static bool br_ip4_multicast_rport_del(struct net_bridge_port *p) return br_multicast_rport_del(&p->ip4_rlist); } +static bool br_ip6_multicast_rport_del(struct net_bridge_port *p) +{ +#if IS_ENABLED(CONFIG_IPV6) + return br_multicast_rport_del(&p->ip6_rlist); +#else + return false; +#endif +} + static void br_multicast_router_expired(struct net_bridge_port *port, struct timer_list *t, struct hlist_node *rlist) @@ -1395,6 +1406,15 @@ static void br_ip4_multicast_router_expired(struct timer_list *t) br_multicast_router_expired(port, t, &port->ip4_rlist); } +#if IS_ENABLED(CONFIG_IPV6) +static void br_ip6_multicast_router_expired(struct timer_list *t) +{ + struct net_bridge_port *port = from_timer(port, t, ip6_mc_router_timer); + + br_multicast_router_expired(port, t, &port->ip6_rlist); +} +#endif + static void br_mc_router_state_change(struct net_bridge *p, bool is_mc_router) { @@ -1430,6 +1450,15 @@ static void br_ip4_multicast_local_router_expired(struct timer_list *t) br_multicast_local_router_expired(br, t); } +#if IS_ENABLED(CONFIG_IPV6) +static void br_ip6_multicast_local_router_expired(struct timer_list *t) +{ + struct net_bridge *br = from_timer(br, t, ip6_mc_router_timer); + + br_multicast_local_router_expired(br, t); +} +#endif + static void br_multicast_querier_expired(struct net_bridge *br, struct bridge_mcast_own_query *query) { @@ -1649,6 +1678,8 @@ int br_multicast_add_port(struct net_bridge_port *port) timer_setup(&port->ip4_own_query.timer, br_ip4_multicast_port_query_expired, 0); #if IS_ENABLED(CONFIG_IPV6) + timer_setup(&port->ip6_mc_router_timer, + br_ip6_multicast_router_expired, 0); timer_setup(&port->ip6_own_query.timer, br_ip6_multicast_port_query_expired, 0); #endif @@ -1681,6 +1712,9 @@ void br_multicast_del_port(struct net_bridge_port *port) spin_unlock_bh(&br->multicast_lock); br_multicast_gc(&deleted_head); del_timer_sync(&port->ip4_mc_router_timer); +#if IS_ENABLED(CONFIG_IPV6) + del_timer_sync(&port->ip6_mc_router_timer); +#endif free_percpu(port->mcast_stats); } @@ -1704,9 +1738,14 @@ static void __br_multicast_enable_port(struct net_bridge_port *port) #if IS_ENABLED(CONFIG_IPV6) br_multicast_enable(&port->ip6_own_query); #endif - if (port->multicast_router == MDB_RTR_TYPE_PERM && - hlist_unhashed(&port->ip4_rlist)) - br_ip4_multicast_add_router(br, port); + if (port->multicast_router == MDB_RTR_TYPE_PERM) { + if (hlist_unhashed(&port->ip4_rlist)) + br_ip4_multicast_add_router(br, port); +#if IS_ENABLED(CONFIG_IPV6) + if (hlist_unhashed(&port->ip6_rlist)) + br_ip6_multicast_add_router(br, port); +#endif + } } void br_multicast_enable_port(struct net_bridge_port *port) @@ -1733,7 +1772,9 @@ void br_multicast_disable_port(struct net_bridge_port *port) del |= br_ip4_multicast_rport_del(port); del_timer(&port->ip4_mc_router_timer); del_timer(&port->ip4_own_query.timer); + del |= br_ip6_multicast_rport_del(port); #if IS_ENABLED(CONFIG_IPV6) + del_timer(&port->ip6_mc_router_timer); del_timer(&port->ip6_own_query.timer); #endif br_multicast_rport_del_notify(port, del); @@ -2671,11 +2712,19 @@ static void br_port_mc_router_state_change(struct net_bridge_port *p, switchdev_port_attr_set(p->dev, &attr, NULL); } -/* - * Add port to router_list - * list is maintained ordered by pointer value - * and locked by br->multicast_lock and RCU - */ +static bool br_multicast_no_router_otherpf(struct net_bridge_port *port, + struct hlist_node *rnode) +{ +#if IS_ENABLED(CONFIG_IPV6) + if (rnode != &port->ip6_rlist) + return hlist_unhashed(&port->ip6_rlist); + else + return hlist_unhashed(&port->ip4_rlist); +#else + return true; +#endif +} + static void br_multicast_add_router(struct net_bridge *br, struct net_bridge_port *port, struct hlist_node *slot, @@ -2690,8 +2739,14 @@ static void br_multicast_add_router(struct net_bridge *br, else hlist_add_head_rcu(rlist, mc_router_list); - br_rtr_notify(br->dev, port, RTM_NEWMDB); - br_port_mc_router_state_change(port, true); + /* For backwards compatibility for now, only notify if we + * switched from no IPv4/IPv6 multicast router to a new + * IPv4 or IPv6 multicast router. + */ + if (br_multicast_no_router_otherpf(port, rlist)) { + br_rtr_notify(br->dev, port, RTM_NEWMDB); + br_port_mc_router_state_change(port, true); + } } static struct hlist_node * @@ -2722,14 +2777,54 @@ static void br_ip4_multicast_add_router(struct net_bridge *br, &br->ip4_mc_router_list); } -static void br_multicast_mark_router(struct net_bridge *br, - struct net_bridge_port *port) +#if IS_ENABLED(CONFIG_IPV6) +static struct hlist_node * +br_ip6_multicast_get_rport_slot(struct net_bridge *br, struct net_bridge_port *port) +{ + struct hlist_node *slot = NULL; + struct net_bridge_port *p; + + hlist_for_each_entry(p, &br->ip6_mc_router_list, ip6_rlist) { + if ((unsigned long)port >= (unsigned long)p) + break; + slot = &p->ip6_rlist; + } + + return slot; +} + +/* Add port to router_list + * list is maintained ordered by pointer value + * and locked by br->multicast_lock and RCU + */ +static void br_ip6_multicast_add_router(struct net_bridge *br, + struct net_bridge_port *port) +{ + struct hlist_node *slot = br_ip6_multicast_get_rport_slot(br, port); + + br_multicast_add_router(br, port, slot, &port->ip6_rlist, + &br->ip6_mc_router_list); +} +#else +static inline void br_ip6_multicast_add_router(struct net_bridge *br, + struct net_bridge_port *port) +{ +} +#endif + +static void br_ip4_multicast_mark_router(struct net_bridge *br, + struct net_bridge_port *port) { unsigned long now = jiffies; if (!port) { if (br->multicast_router == MDB_RTR_TYPE_TEMP_QUERY) { +#if IS_ENABLED(CONFIG_IPV6) + if (!timer_pending(&br->ip4_mc_router_timer) && + !timer_pending(&br->ip6_mc_router_timer)) +#else if (!timer_pending(&br->ip4_mc_router_timer)) +#endif br_mc_router_state_change(br, true); mod_timer(&br->ip4_mc_router_timer, now + br->multicast_querier_interval); @@ -2747,6 +2842,39 @@ static void br_multicast_mark_router(struct net_bridge *br, now + br->multicast_querier_interval); } +#if IS_ENABLED(CONFIG_IPV6) +static void br_ip6_multicast_mark_router(struct net_bridge *br, + struct net_bridge_port *port) +{ + unsigned long now = jiffies; + + if (!port) { + if (br->multicast_router == MDB_RTR_TYPE_TEMP_QUERY) { + if (!timer_pending(&br->ip4_mc_router_timer) && + !timer_pending(&br->ip6_mc_router_timer)) + br_mc_router_state_change(br, true); + mod_timer(&br->ip6_mc_router_timer, + now + br->multicast_querier_interval); + } + return; + } + + if (port->multicast_router == MDB_RTR_TYPE_DISABLED || + port->multicast_router == MDB_RTR_TYPE_PERM) + return; + + br_ip6_multicast_add_router(br, port); + + mod_timer(&port->ip6_mc_router_timer, + now + br->multicast_querier_interval); +} +#else +static inline void br_ip6_multicast_mark_router(struct net_bridge *br, + struct net_bridge_port *port) +{ +} +#endif + static void br_ip4_multicast_query_received(struct net_bridge *br, struct net_bridge_port *port, @@ -2758,7 +2886,7 @@ br_ip4_multicast_query_received(struct net_bridge *br, return; br_multicast_update_query_timer(br, query, max_delay); - br_multicast_mark_router(br, port); + br_ip4_multicast_mark_router(br, port); } #if IS_ENABLED(CONFIG_IPV6) @@ -2773,7 +2901,7 @@ br_ip6_multicast_query_received(struct net_bridge *br, return; br_multicast_update_query_timer(br, query, max_delay); - br_multicast_mark_router(br, port); + br_ip6_multicast_mark_router(br, port); } #endif @@ -3143,7 +3271,7 @@ static void br_multicast_pim(struct net_bridge *br, pim_hdr_type(pimhdr) != PIM_TYPE_HELLO) return; - br_multicast_mark_router(br, port); + br_ip4_multicast_mark_router(br, port); } static int br_ip4_multicast_mrd_rcv(struct net_bridge *br, @@ -3154,7 +3282,7 @@ static int br_ip4_multicast_mrd_rcv(struct net_bridge *br, igmp_hdr(skb)->type != IGMP_MRDISC_ADV) return -ENOMSG; - br_multicast_mark_router(br, port); + br_ip4_multicast_mark_router(br, port); return 0; } @@ -3222,7 +3350,7 @@ static void br_ip6_multicast_mrd_rcv(struct net_bridge *br, if (icmp6_hdr(skb)->icmp6_type != ICMPV6_MRDISC_ADV) return; - br_multicast_mark_router(br, port); + br_ip6_multicast_mark_router(br, port); } static int br_multicast_ipv6_rcv(struct net_bridge *br, @@ -3379,6 +3507,8 @@ void br_multicast_init(struct net_bridge *br) timer_setup(&br->ip4_own_query.timer, br_ip4_multicast_query_expired, 0); #if IS_ENABLED(CONFIG_IPV6) + timer_setup(&br->ip6_mc_router_timer, + br_ip6_multicast_local_router_expired, 0); timer_setup(&br->ip6_other_query.timer, br_ip6_multicast_querier_expired, 0); timer_setup(&br->ip6_own_query.timer, @@ -3476,6 +3606,7 @@ void br_multicast_stop(struct net_bridge *br) del_timer_sync(&br->ip4_other_query.timer); del_timer_sync(&br->ip4_own_query.timer); #if IS_ENABLED(CONFIG_IPV6) + del_timer_sync(&br->ip6_mc_router_timer); del_timer_sync(&br->ip6_other_query.timer); del_timer_sync(&br->ip6_own_query.timer); #endif @@ -3510,6 +3641,9 @@ int br_multicast_set_router(struct net_bridge *br, unsigned long val) case MDB_RTR_TYPE_PERM: br_mc_router_state_change(br, val == MDB_RTR_TYPE_PERM); del_timer(&br->ip4_mc_router_timer); +#if IS_ENABLED(CONFIG_IPV6) + del_timer(&br->ip6_mc_router_timer); +#endif br->multicast_router = val; err = 0; break; @@ -3532,6 +3666,16 @@ br_multicast_rport_del_notify(struct net_bridge_port *p, bool deleted) if (!deleted) return; + /* For backwards compatibility for now, only notify if there is + * no multicast router anymore for both IPv4 and IPv6. + */ + if (!hlist_unhashed(&p->ip4_rlist)) + return; +#if IS_ENABLED(CONFIG_IPV6) + if (!hlist_unhashed(&p->ip6_rlist)) + return; +#endif + br_rtr_notify(p->br->dev, p, RTM_DELMDB); br_port_mc_router_state_change(p, false); @@ -3550,9 +3694,14 @@ int br_multicast_set_port_router(struct net_bridge_port *p, unsigned long val) spin_lock(&br->multicast_lock); if (p->multicast_router == val) { /* Refresh the temp router port timer */ - if (p->multicast_router == MDB_RTR_TYPE_TEMP) + if (p->multicast_router == MDB_RTR_TYPE_TEMP) { mod_timer(&p->ip4_mc_router_timer, now + br->multicast_querier_interval); +#if IS_ENABLED(CONFIG_IPV6) + mod_timer(&p->ip6_mc_router_timer, + now + br->multicast_querier_interval); +#endif + } err = 0; goto unlock; } @@ -3561,21 +3710,31 @@ int br_multicast_set_port_router(struct net_bridge_port *p, unsigned long val) p->multicast_router = MDB_RTR_TYPE_DISABLED; del |= br_ip4_multicast_rport_del(p); del_timer(&p->ip4_mc_router_timer); + del |= br_ip6_multicast_rport_del(p); +#if IS_ENABLED(CONFIG_IPV6) + del_timer(&p->ip6_mc_router_timer); +#endif br_multicast_rport_del_notify(p, del); break; case MDB_RTR_TYPE_TEMP_QUERY: p->multicast_router = MDB_RTR_TYPE_TEMP_QUERY; del |= br_ip4_multicast_rport_del(p); + del |= br_ip6_multicast_rport_del(p); br_multicast_rport_del_notify(p, del); break; case MDB_RTR_TYPE_PERM: p->multicast_router = MDB_RTR_TYPE_PERM; del_timer(&p->ip4_mc_router_timer); br_ip4_multicast_add_router(br, p); +#if IS_ENABLED(CONFIG_IPV6) + del_timer(&p->ip6_mc_router_timer); +#endif + br_ip6_multicast_add_router(br, p); break; case MDB_RTR_TYPE_TEMP: p->multicast_router = MDB_RTR_TYPE_TEMP; - br_multicast_mark_router(br, p); + br_ip4_multicast_mark_router(br, p); + br_ip6_multicast_mark_router(br, p); break; default: goto unlock; diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h index 41ed3fe..a2e7b9e 100644 --- a/net/bridge/br_private.h +++ b/net/bridge/br_private.h @@ -311,6 +311,8 @@ struct net_bridge_port { struct hlist_node ip4_rlist; #if IS_ENABLED(CONFIG_IPV6) struct bridge_mcast_own_query ip6_own_query; + struct timer_list ip6_mc_router_timer; + struct hlist_node ip6_rlist; #endif /* IS_ENABLED(CONFIG_IPV6) */ u32 multicast_eht_hosts_limit; u32 multicast_eht_hosts_cnt; @@ -457,6 +459,8 @@ struct net_bridge { struct bridge_mcast_querier ip4_querier; struct bridge_mcast_stats __percpu *mcast_stats; #if IS_ENABLED(CONFIG_IPV6) + struct hlist_head ip6_mc_router_list; + struct timer_list ip6_mc_router_timer; struct bridge_mcast_other_query ip6_other_query; struct bridge_mcast_own_query ip6_own_query; struct bridge_mcast_querier ip6_querier; @@ -866,11 +870,19 @@ static inline bool br_group_is_l2(const struct br_ip *group) static inline struct hlist_node * br_multicast_get_first_rport_node(struct net_bridge *b, struct sk_buff *skb) { +#if IS_ENABLED(CONFIG_IPV6) + if (skb->protocol == htons(ETH_P_IPV6)) + return rcu_dereference(hlist_first_rcu(&b->ip6_mc_router_list)); +#endif return rcu_dereference(hlist_first_rcu(&b->ip4_mc_router_list)); } static inline struct net_bridge_port * br_multicast_rport_from_node(struct hlist_node *rp, struct sk_buff *skb) { +#if IS_ENABLED(CONFIG_IPV6) + if (skb->protocol == htons(ETH_P_IPV6)) + return hlist_entry_safe(rp, struct net_bridge_port, ip6_rlist); +#endif return hlist_entry_safe(rp, struct net_bridge_port, ip4_rlist); } @@ -882,7 +894,7 @@ static inline bool br_ip4_multicast_is_router(struct net_bridge *br) static inline bool br_ip6_multicast_is_router(struct net_bridge *br) { #if IS_ENABLED(CONFIG_IPV6) - return timer_pending(&br->ip4_mc_router_timer); + return timer_pending(&br->ip6_mc_router_timer); #else return false; #endif From patchwork Wed May 12 23:19:40 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Linus_L=C3=BCssing?= X-Patchwork-Id: 437733 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=-13.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS 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 9BD40C43470 for ; Wed, 12 May 2021 23:28:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7FB87613FC for ; Wed, 12 May 2021 23:28:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238589AbhELXZy (ORCPT ); Wed, 12 May 2021 19:25:54 -0400 Received: from mail.aperture-lab.de ([116.203.183.178]:50958 "EHLO mail.aperture-lab.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234105AbhELXVK (ORCPT ); Wed, 12 May 2021 19:21:10 -0400 Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id C51404100F; Thu, 13 May 2021 01:19:56 +0200 (CEST) From: =?utf-8?q?Linus_L=C3=BCssing?= To: netdev@vger.kernel.org Cc: Roopa Prabhu , Nikolay Aleksandrov , Jakub Kicinski , "David S . Miller" , bridge@lists.linux-foundation.org, linux-kernel@vger.kernel.org, =?utf-8?q?Linus_L=C3=BCssing?= Subject: [net-next v3 10/11] net: bridge: mcast: add ip4+ip6 mcast router timers to mdb netlink Date: Thu, 13 May 2021 01:19:40 +0200 Message-Id: <20210512231941.19211-11-linus.luessing@c0d3.blue> In-Reply-To: <20210512231941.19211-1-linus.luessing@c0d3.blue> References: <20210512231941.19211-1-linus.luessing@c0d3.blue> MIME-Version: 1.0 X-Last-TLS-Session-Version: TLSv1.2 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Now that we have split the multicast router state into two, one for IPv4 and one for IPv6, also add individual timers to the mdb netlink router port dump. Leaving the old timer attribute for backwards compatibility. Signed-off-by: Linus Lüssing Acked-by: Nikolay Aleksandrov --- include/uapi/linux/if_bridge.h | 2 ++ net/bridge/br_mdb.c | 8 +++++++- 2 files changed, 9 insertions(+), 1 deletion(-) diff --git a/include/uapi/linux/if_bridge.h b/include/uapi/linux/if_bridge.h index 13d59c5..6b56a75 100644 --- a/include/uapi/linux/if_bridge.h +++ b/include/uapi/linux/if_bridge.h @@ -627,6 +627,8 @@ enum { MDBA_ROUTER_PATTR_UNSPEC, MDBA_ROUTER_PATTR_TIMER, MDBA_ROUTER_PATTR_TYPE, + MDBA_ROUTER_PATTR_INET_TIMER, + MDBA_ROUTER_PATTR_INET6_TIMER, __MDBA_ROUTER_PATTR_MAX }; #define MDBA_ROUTER_PATTR_MAX (__MDBA_ROUTER_PATTR_MAX - 1) diff --git a/net/bridge/br_mdb.c b/net/bridge/br_mdb.c index 10c416c..3f839a8 100644 --- a/net/bridge/br_mdb.c +++ b/net/bridge/br_mdb.c @@ -79,7 +79,13 @@ static int br_rports_fill_info(struct sk_buff *skb, struct netlink_callback *cb, nla_put_u32(skb, MDBA_ROUTER_PATTR_TIMER, max(ip4_timer, ip6_timer)) || nla_put_u8(skb, MDBA_ROUTER_PATTR_TYPE, - p->multicast_router)) { + p->multicast_router) || + (have_ip4_mc_rtr && + nla_put_u32(skb, MDBA_ROUTER_PATTR_INET_TIMER, + ip4_timer)) || + (have_ip6_mc_rtr && + nla_put_u32(skb, MDBA_ROUTER_PATTR_INET6_TIMER, + ip6_timer))) { nla_nest_cancel(skb, port_nest); goto fail; } From patchwork Wed May 12 23:19:41 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Linus_L=C3=BCssing?= X-Patchwork-Id: 436129 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=-13.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS 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 1183FC4363C for ; Wed, 12 May 2021 23:28:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0615A613FC for ; Wed, 12 May 2021 23:28:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240222AbhELX0p (ORCPT ); Wed, 12 May 2021 19:26:45 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39758 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234300AbhELXVL (ORCPT ); Wed, 12 May 2021 19:21:11 -0400 Received: from mail.aperture-lab.de (mail.aperture-lab.de [IPv6:2a01:4f8:c2c:665b::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C64AFC06174A; Wed, 12 May 2021 16:19:59 -0700 (PDT) Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id DC7C03E942; Thu, 13 May 2021 01:19:57 +0200 (CEST) From: =?utf-8?q?Linus_L=C3=BCssing?= To: netdev@vger.kernel.org Cc: Roopa Prabhu , Nikolay Aleksandrov , Jakub Kicinski , "David S . Miller" , bridge@lists.linux-foundation.org, linux-kernel@vger.kernel.org, =?utf-8?q?Linus_L=C3=BCssing?= Subject: [net-next v3 11/11] net: bridge: mcast: export multicast router presence adjacent to a port Date: Thu, 13 May 2021 01:19:41 +0200 Message-Id: <20210512231941.19211-12-linus.luessing@c0d3.blue> In-Reply-To: <20210512231941.19211-1-linus.luessing@c0d3.blue> References: <20210512231941.19211-1-linus.luessing@c0d3.blue> MIME-Version: 1.0 X-Last-TLS-Session-Version: TLSv1.2 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org To properly support routable multicast addresses in batman-adv in a group-aware way, a batman-adv node needs to know if it serves multicast routers. This adds a function to the bridge to export this so that batman-adv can then make full use of the Multicast Router Discovery capability of the bridge. Signed-off-by: Linus Lüssing Acked-by: Nikolay Aleksandrov --- include/linux/if_bridge.h | 8 ++++++ net/bridge/br_multicast.c | 55 +++++++++++++++++++++++++++++++++++++++ 2 files changed, 63 insertions(+) diff --git a/include/linux/if_bridge.h b/include/linux/if_bridge.h index 2cc3503..12e9a32 100644 --- a/include/linux/if_bridge.h +++ b/include/linux/if_bridge.h @@ -67,6 +67,7 @@ int br_multicast_list_adjacent(struct net_device *dev, struct list_head *br_ip_list); bool br_multicast_has_querier_anywhere(struct net_device *dev, int proto); bool br_multicast_has_querier_adjacent(struct net_device *dev, int proto); +bool br_multicast_has_router_adjacent(struct net_device *dev, int proto); bool br_multicast_enabled(const struct net_device *dev); bool br_multicast_router(const struct net_device *dev); int br_mdb_replay(struct net_device *br_dev, struct net_device *dev, @@ -87,6 +88,13 @@ static inline bool br_multicast_has_querier_adjacent(struct net_device *dev, { return false; } + +static inline bool br_multicast_has_router_adjacent(struct net_device *dev, + int proto) +{ + return true; +} + static inline bool br_multicast_enabled(const struct net_device *dev) { return false; diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c index 4448490..fe21f52 100644 --- a/net/bridge/br_multicast.c +++ b/net/bridge/br_multicast.c @@ -4061,6 +4061,61 @@ unlock: } EXPORT_SYMBOL_GPL(br_multicast_has_querier_adjacent); +/** + * br_multicast_has_router_adjacent - Checks for a router behind a bridge port + * @dev: The bridge port adjacent to which to check for a multicast router + * @proto: The protocol family to check for: IGMP -> ETH_P_IP, MLD -> ETH_P_IPV6 + * + * Checks whether the given interface has a bridge on top and if so returns + * true if a multicast router is behind one of the other ports of this + * bridge. Otherwise returns false. + */ +bool br_multicast_has_router_adjacent(struct net_device *dev, int proto) +{ + struct net_bridge_port *port, *p; + bool ret = false; + + rcu_read_lock(); + port = br_port_get_check_rcu(dev); + if (!port) + goto unlock; + + switch (proto) { + case ETH_P_IP: + hlist_for_each_entry_rcu(p, &port->br->ip4_mc_router_list, + ip4_rlist) { + if (p == port) + continue; + + ret = true; + goto unlock; + } + break; +#if IS_ENABLED(CONFIG_IPV6) + case ETH_P_IPV6: + hlist_for_each_entry_rcu(p, &port->br->ip6_mc_router_list, + ip6_rlist) { + if (p == port) + continue; + + ret = true; + goto unlock; + } + break; +#endif + default: + /* when compiled without IPv6 support, be conservative and + * always assume presence of an IPv6 multicast router + */ + ret = true; + } + +unlock: + rcu_read_unlock(); + return ret; +} +EXPORT_SYMBOL_GPL(br_multicast_has_router_adjacent); + static void br_mcast_stats_add(struct bridge_mcast_stats __percpu *stats, const struct sk_buff *skb, u8 type, u8 dir) {