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From: Tobias Waldekranz <tobias@waldekranz.com>
To: davem@davemloft.net, kuba@kernel.org
Cc: andrew@lunn.ch, vivien.didelot@gmail.com, f.fainelli@gmail.com,
	olteanv@gmail.com, roopa@nvidia.com, nikolay@nvidia.com,
	netdev@vger.kernel.org
Subject: [RFC net-next 6/7] net: dsa: Sync static FDB entries on foreign interfaces to hardware
Date: Sat, 16 Jan 2021 02:25:14 +0100	[thread overview]
Message-ID: <20210116012515.3152-7-tobias@waldekranz.com> (raw)
In-Reply-To: <20210116012515.3152-1-tobias@waldekranz.com>

Reuse the "assisted_learning_on_cpu_port" functionality to always add
entries for user-configured entries on foreign interfaces, even if
assisted_learning_on_cpu_port is not enabled. E.g. in this situation:

   br0
   / \
swp0 dummy0

$ bridge fdb add 02:00:de:ad:00:01 dev dummy0 vlan 1 master

Results in DSA adding an entry in the hardware FDB, pointing this
address towards the CPU port.

The same is true for entries added to the bridge itself, e.g:

$ bridge fdb add 02:00:de:ad:00:01 dev br0 vlan 1 self

Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com>
---
 net/dsa/slave.c | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/net/dsa/slave.c b/net/dsa/slave.c
index 1ac46ad4a846..f89b5eb4d2d6 100644
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -2181,9 +2181,12 @@ static int dsa_slave_switchdev_event(struct notifier_block *unused,
 			else if (!fdb_info->added_by_user)
 				return NOTIFY_OK;
 		} else {
-			/* Snoop addresses learnt on foreign interfaces
-			 * bridged with us, for switches that don't
-			 * automatically learn SA from CPU-injected traffic
+			/* Snoop addresses added to foreign interfaces
+			 * bridged with us, or the bridge
+			 * itself. Dynamically learned addresses can
+			 * also be added for switches that don't
+			 * automatically learn SA from CPU-injected
+			 * traffic.
 			 */
 			struct net_device *br_dev;
 			struct dsa_slave_priv *p;
@@ -2205,7 +2208,8 @@ static int dsa_slave_switchdev_event(struct notifier_block *unused,
 
 			dp = p->dp->cpu_dp;
 
-			if (!dp->ds->assisted_learning_on_cpu_port)
+			if (!fdb_info->added_by_user &&
+			    !dp->ds->assisted_learning_on_cpu_port)
 				return NOTIFY_DONE;
 		}
 
-- 
2.17.1


  parent reply	other threads:[~2021-01-16  1:27 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-16  1:25 [RFC net-next 0/7] net: dsa: Sync local bridge FDB addresses " Tobias Waldekranz
2021-01-16  1:25 ` [RFC net-next 1/7] net: bridge: switchdev: Refactor br_switchdev_fdb_notify Tobias Waldekranz
2021-01-17 17:24   ` Vladimir Oltean
2021-01-16  1:25 ` [RFC net-next 2/7] net: bridge: switchdev: Include local flag in FDB notifications Tobias Waldekranz
2021-01-17 19:30   ` Vladimir Oltean
2021-01-18 18:58     ` Tobias Waldekranz
2021-01-18 19:27       ` Vladimir Oltean
2021-01-18 20:19         ` Tobias Waldekranz
2021-01-18 21:03           ` Vladimir Oltean
2021-01-18 21:17           ` Nikolay Aleksandrov
2021-01-18 21:22             ` Nikolay Aleksandrov
2021-01-18 21:39               ` Nikolay Aleksandrov
2021-01-18 21:50                 ` Vladimir Oltean
2021-01-18 21:53                   ` Nikolay Aleksandrov
2021-01-18 22:06                     ` Vladimir Oltean
2021-01-18 22:09                       ` Vladimir Oltean
2021-01-18 22:42                       ` Nikolay Aleksandrov
2021-01-19  0:42                         ` Vladimir Oltean
2021-01-19 10:14                           ` Nikolay Aleksandrov
2021-01-18 19:28     ` Ido Schimmel
2021-01-16  1:25 ` [RFC net-next 3/7] net: bridge: switchdev: Send FDB notifications for host addresses Tobias Waldekranz
2021-01-18 11:28   ` Vladimir Oltean
2021-01-16  1:25 ` [RFC net-next 4/7] net: dsa: Include local addresses in assisted CPU port learning Tobias Waldekranz
2021-01-16  1:25 ` [RFC net-next 5/7] net: dsa: Include bridge " Tobias Waldekranz
2021-01-16  1:25 ` Tobias Waldekranz [this message]
2021-01-16  1:25 ` [RFC net-next 7/7] net: dsa: mv88e6xxx: Request assisted learning on CPU port Tobias Waldekranz
2021-02-01  6:24 ` DENG Qingfang
2021-02-03  9:27   ` Tobias Waldekranz
2021-02-03 10:14     ` Vladimir Oltean
2021-02-03 10:42       ` Tobias Waldekranz

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