net: dsa: mt7530: fix mirroring frames received on local port

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[ Upstream commit d59cf049c8 ]

This switch intellectual property provides a bit on the ARL global control
register which controls allowing mirroring frames which are received on the
local port (monitor port). This bit is unset after reset.

This ability must be enabled to fully support the port mirroring feature on
this switch intellectual property.

Therefore, this patch fixes the traffic not being reflected on a port,
which would be configured like below:

  tc qdisc add dev swp0 clsact

  tc filter add dev swp0 ingress matchall skip_sw \
  action mirred egress mirror dev swp0

As a side note, this configuration provides the hairpinning feature for a
single port.

Fixes: 37feab6076 ("net: dsa: mt7530: add support for port mirroring")
Signed-off-by: Arınç ÜNAL <arinc.unal@arinc9.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

This commit is contained in:

Arınç ÜNAL 2024-04-13 16:01:39 +03:00 • committed by Greg Kroah-Hartman

parent 62e27ef18e

commit e86c9db58e

2 changed files with 10 additions and 0 deletions

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6

drivers/net/dsa/mt7530.c

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4

drivers/net/dsa/mt7530.h

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