2e17c71095
Without this patch we have to manually bring up the CPU interface in failsafe mode. This was backported from kernel 5.12. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Tested-by: Rafał Miłecki <rafal@milecki.pl>
57 lines
1.8 KiB
Diff
57 lines
1.8 KiB
Diff
From 81e39fd78db82fb51b05fff309b9c521f1a0bc5a Mon Sep 17 00:00:00 2001
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From: Tobias Waldekranz <tobias@waldekranz.com>
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Date: Sat, 16 Jan 2021 02:25:14 +0100
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Subject: [PATCH] net: dsa: Sync static FDB entries on foreign interfaces to
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hardware
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Reuse the "assisted_learning_on_cpu_port" functionality to always add
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entries for user-configured entries on foreign interfaces, even if
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assisted_learning_on_cpu_port is not enabled. E.g. in this situation:
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br0
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/ \
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swp0 dummy0
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$ bridge fdb add 02:00:de:ad:00:01 dev dummy0 vlan 1 master
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Results in DSA adding an entry in the hardware FDB, pointing this
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address towards the CPU port.
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The same is true for entries added to the bridge itself, e.g:
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$ bridge fdb add 02:00:de:ad:00:01 dev br0 vlan 1 self
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Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com>
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---
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net/dsa/slave.c | 12 ++++++++----
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1 file changed, 8 insertions(+), 4 deletions(-)
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--- a/net/dsa/slave.c
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+++ b/net/dsa/slave.c
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@@ -1707,9 +1707,12 @@ static int dsa_slave_switchdev_event(str
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else if (!fdb_info->added_by_user)
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return NOTIFY_OK;
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} else {
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- /* Snoop addresses learnt on foreign interfaces
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- * bridged with us, for switches that don't
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- * automatically learn SA from CPU-injected traffic
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+ /* Snoop addresses added to foreign interfaces
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+ * bridged with us, or the bridge
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+ * itself. Dynamically learned addresses can
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+ * also be added for switches that don't
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+ * automatically learn SA from CPU-injected
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+ * traffic.
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*/
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struct net_device *br_dev;
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struct dsa_slave_priv *p;
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@@ -1731,7 +1734,8 @@ static int dsa_slave_switchdev_event(str
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dp = p->dp->cpu_dp;
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- if (!dp->ds->assisted_learning_on_cpu_port)
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+ if (!fdb_info->added_by_user &&
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+ !dp->ds->assisted_learning_on_cpu_port)
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return NOTIFY_DONE;
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}
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