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From: Nikolay Aleksandrov <razor@blackwall.org>
To: netdev@vger.kernel.org
Cc: roopa@nvidia.com, bridge@lists.linux-foundation.org,
	Nikolay Aleksandrov <nikolay@nvidia.com>
Subject: [PATCH net-next 15/15] net: bridge: vlan: use br_rports_fill_info() to export mcast router ports
Date: Tue, 10 Aug 2021 18:29:33 +0300	[thread overview]
Message-ID: <20210810152933.178325-16-razor@blackwall.org> (raw)
In-Reply-To: <20210810152933.178325-1-razor@blackwall.org>

From: Nikolay Aleksandrov <nikolay@nvidia.com>

Embed the standard multicast router port export by br_rports_fill_info()
into a new global vlan attribute BRIDGE_VLANDB_GOPTS_MCAST_ROUTER_PORTS.
In order to have the same format for the global bridge mcast context and
the per-vlan mcast context we need a double-nesting:
 - BRIDGE_VLANDB_GOPTS_MCAST_ROUTER_PORTS
   - MDBA_ROUTER

Currently we don't compare router lists, if any router port exists in
the bridge mcast contexts we consider their option sets as different and
export them separately.

In addition we export the router port vlan id when dumping similar to
the router port notification format.

Signed-off-by: Nikolay Aleksandrov <nikolay@nvidia.com>
---
 include/uapi/linux/if_bridge.h |  1 +
 net/bridge/br_mdb.c            | 17 ++++-------------
 net/bridge/br_private.h        | 15 +++++++++++++++
 net/bridge/br_vlan_options.c   | 18 ++++++++++++++++++
 4 files changed, 38 insertions(+), 13 deletions(-)

diff --git a/include/uapi/linux/if_bridge.h b/include/uapi/linux/if_bridge.h
index 716ce30b3ca8..4a57d063768d 100644
--- a/include/uapi/linux/if_bridge.h
+++ b/include/uapi/linux/if_bridge.h
@@ -562,6 +562,7 @@ enum {
 	BRIDGE_VLANDB_GOPTS_MCAST_STARTUP_QUERY_INTVL,
 	BRIDGE_VLANDB_GOPTS_MCAST_QUERIER,
 	BRIDGE_VLANDB_GOPTS_MCAST_ROUTER,
+	BRIDGE_VLANDB_GOPTS_MCAST_ROUTER_PORTS,
 	__BRIDGE_VLANDB_GOPTS_MAX
 };
 #define BRIDGE_VLANDB_GOPTS_MAX (__BRIDGE_VLANDB_GOPTS_MAX - 1)
diff --git a/net/bridge/br_mdb.c b/net/bridge/br_mdb.c
index 7c16e2c76220..389ff3c1e9d9 100644
--- a/net/bridge/br_mdb.c
+++ b/net/bridge/br_mdb.c
@@ -16,16 +16,6 @@
 
 #include "br_private.h"
 
-static bool br_rports_have_mc_router(const struct net_bridge_mcast *brmctx)
-{
-#if IS_ENABLED(CONFIG_IPV6)
-	return !hlist_empty(&brmctx->ip4_mc_router_list) ||
-	       !hlist_empty(&brmctx->ip6_mc_router_list);
-#else
-	return !hlist_empty(&brmctx->ip4_mc_router_list);
-#endif
-}
-
 static bool
 br_ip4_rports_get_timer(struct net_bridge_mcast_port *pmctx,
 			unsigned long *timer)
@@ -47,8 +37,8 @@ br_ip6_rports_get_timer(struct net_bridge_mcast_port *pmctx,
 #endif
 }
 
-static int br_rports_fill_info(struct sk_buff *skb,
-			       const struct net_bridge_mcast *brmctx)
+int br_rports_fill_info(struct sk_buff *skb,
+			const struct net_bridge_mcast *brmctx)
 {
 	u16 vid = brmctx->vlan ? brmctx->vlan->vid : 0;
 	bool have_ip4_mc_rtr, have_ip6_mc_rtr;
@@ -97,7 +87,8 @@ static int br_rports_fill_info(struct sk_buff *skb,
 				 ip4_timer)) ||
 		    (have_ip6_mc_rtr &&
 		     nla_put_u32(skb, MDBA_ROUTER_PATTR_INET6_TIMER,
-				 ip6_timer))) {
+				 ip6_timer)) ||
+		    (vid && nla_put_u16(skb, MDBA_ROUTER_PATTR_VID, vid))) {
 			nla_nest_cancel(skb, port_nest);
 			goto fail;
 		}
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
index f5af6b56be8f..6f5106ab6f20 100644
--- a/net/bridge/br_private.h
+++ b/net/bridge/br_private.h
@@ -958,6 +958,8 @@ bool br_multicast_toggle_global_vlan(struct net_bridge_vlan *vlan, bool on);
 int br_mdb_replay(struct net_device *br_dev, struct net_device *dev,
 		  const void *ctx, bool adding, struct notifier_block *nb,
 		  struct netlink_ext_ack *extack);
+int br_rports_fill_info(struct sk_buff *skb,
+			const struct net_bridge_mcast *brmctx);
 
 static inline bool br_group_is_l2(const struct br_ip *group)
 {
@@ -1181,6 +1183,17 @@ br_multicast_port_ctx_state_stopped(const struct net_bridge_mcast_port *pmctx)
 		pmctx->vlan->state == BR_STATE_BLOCKING);
 }
 
+static inline bool
+br_rports_have_mc_router(const struct net_bridge_mcast *brmctx)
+{
+#if IS_ENABLED(CONFIG_IPV6)
+	return !hlist_empty(&brmctx->ip4_mc_router_list) ||
+	       !hlist_empty(&brmctx->ip6_mc_router_list);
+#else
+	return !hlist_empty(&brmctx->ip4_mc_router_list);
+#endif
+}
+
 static inline bool
 br_multicast_ctx_options_equal(const struct net_bridge_mcast *brmctx1,
 			       const struct net_bridge_mcast *brmctx2)
@@ -1205,6 +1218,8 @@ br_multicast_ctx_options_equal(const struct net_bridge_mcast *brmctx1,
 	       brmctx2->multicast_startup_query_interval &&
 	       brmctx1->multicast_querier == brmctx2->multicast_querier &&
 	       brmctx1->multicast_router == brmctx2->multicast_router &&
+	       !br_rports_have_mc_router(brmctx1) &&
+	       !br_rports_have_mc_router(brmctx2) &&
 #if IS_ENABLED(CONFIG_IPV6)
 	       brmctx1->multicast_mld_version ==
 	       brmctx2->multicast_mld_version &&
diff --git a/net/bridge/br_vlan_options.c b/net/bridge/br_vlan_options.c
index 6ba45b73931f..b4fd5fa441b7 100644
--- a/net/bridge/br_vlan_options.c
+++ b/net/bridge/br_vlan_options.c
@@ -272,6 +272,7 @@ bool br_vlan_global_opts_can_enter_range(const struct net_bridge_vlan *v_curr,
 bool br_vlan_global_opts_fill(struct sk_buff *skb, u16 vid, u16 vid_range,
 			      const struct net_bridge_vlan *v_opts)
 {
+	struct nlattr *nest2 __maybe_unused;
 	u64 clockval __maybe_unused;
 	struct nlattr *nest;
 
@@ -326,6 +327,23 @@ bool br_vlan_global_opts_fill(struct sk_buff *skb, u16 vid, u16 vid_range,
 			      clockval, BRIDGE_VLANDB_GOPTS_PAD))
 		goto out_err;
 
+	if (br_rports_have_mc_router(&v_opts->br_mcast_ctx)) {
+		nest2 = nla_nest_start(skb,
+				       BRIDGE_VLANDB_GOPTS_MCAST_ROUTER_PORTS);
+		if (!nest2)
+			goto out_err;
+
+		rcu_read_lock();
+		if (br_rports_fill_info(skb, &v_opts->br_mcast_ctx)) {
+			rcu_read_unlock();
+			nla_nest_cancel(skb, nest2);
+			goto out_err;
+		}
+		rcu_read_unlock();
+
+		nla_nest_end(skb, nest2);
+	}
+
 #if IS_ENABLED(CONFIG_IPV6)
 	if (nla_put_u8(skb, BRIDGE_VLANDB_GOPTS_MCAST_MLD_VERSION,
 		       v_opts->br_mcast_ctx.multicast_mld_version))
-- 
2.31.1


  parent reply	other threads:[~2021-08-10 15:30 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-10 15:29 [PATCH net-next 00/15] net: bridge: vlan: add global mcast options Nikolay Aleksandrov
2021-08-10 15:29 ` [PATCH net-next 01/15] net: bridge: vlan: add support for mcast igmp/mld version global options Nikolay Aleksandrov
2021-08-10 15:29 ` [PATCH net-next 02/15] net: bridge: vlan: add support for mcast last member count global option Nikolay Aleksandrov
2021-08-10 15:29 ` [PATCH net-next 03/15] net: bridge: vlan: add support for mcast startup query " Nikolay Aleksandrov
2021-08-10 15:29 ` [PATCH net-next 04/15] net: bridge: vlan: add support for mcast last member interval " Nikolay Aleksandrov
2021-08-10 15:29 ` [PATCH net-next 05/15] net: bridge: vlan: add support for mcast membership " Nikolay Aleksandrov
2021-08-10 15:29 ` [PATCH net-next 06/15] net: bridge: vlan: add support for mcast querier " Nikolay Aleksandrov
2021-08-10 15:29 ` [PATCH net-next 07/15] net: bridge: vlan: add support for mcast query " Nikolay Aleksandrov
2021-08-10 15:29 ` [PATCH net-next 08/15] net: bridge: vlan: add support for mcast query response " Nikolay Aleksandrov
2021-08-10 15:29 ` [PATCH net-next 09/15] net: bridge: vlan: add support for mcast startup query " Nikolay Aleksandrov
2021-08-10 15:29 ` [PATCH net-next 10/15] net: bridge: mcast: move querier state to the multicast context Nikolay Aleksandrov
2021-08-10 15:29 ` [PATCH net-next 11/15] net: bridge: mcast: querier and query state affect only current context type Nikolay Aleksandrov
2021-08-10 15:29 ` [PATCH net-next 12/15] net: bridge: vlan: add support for mcast querier global option Nikolay Aleksandrov
2021-08-10 15:29 ` [PATCH net-next 13/15] net: bridge: vlan: add support for mcast router " Nikolay Aleksandrov
2021-08-10 15:29 ` [PATCH net-next 14/15] net: bridge: mcast: use the proper multicast context when dumping router ports Nikolay Aleksandrov
2021-08-10 15:29 ` Nikolay Aleksandrov [this message]
2021-08-11 12:50 ` [PATCH net-next 00/15] net: bridge: vlan: add global mcast options patchwork-bot+netdevbpf

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