net: dsa: install VLANs into the master's RX filter too

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Most DSA switch tags shift the EtherType to the right, causing the
master to not parse the VLAN as VLAN.
However, not all switches do that (example: tail tags, tag_8021q etc),
and if the DSA master has "rx-vlan-filter: on" in ethtool -k, then we
have a problem.

Therefore, we could populate the VLAN table of the master, just in case
(for some switches it will not make a difference), so that network I/O
can work even with a VLAN filtering master.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Vladimir Oltean 2020-09-21 03:10:29 +03:00 • committed by David S. Miller

parent adb256eb17

commit 2209158c90

1 changed files with 32 additions and 4 deletions

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net/dsa/slave.c

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