net: dsa: mt7530: fix handling of BPDUs on MT7530 switch
authorArınç ÜNAL <arinc.unal@arinc9.com>
Sat, 17 Jun 2023 06:26:46 +0000 (09:26 +0300)
committerDavid S. Miller <davem@davemloft.net>
Tue, 20 Jun 2023 08:40:25 +0000 (09:40 +0100)
commitd7c66073559386b836bded7cdc8b66ee5c049129
treef3515b4d198bab87ee4a5cdcb1dddde1db6bf0ff
parent4ae90f90e4909e3014e2dc6a0627964617a7b824
net: dsa: mt7530: fix handling of BPDUs on MT7530 switch

BPDUs are link-local frames, therefore they must be trapped to the CPU
port. Currently, the MT7530 switch treats BPDUs as regular multicast
frames, therefore flooding them to user ports. To fix this, set BPDUs to be
trapped to the CPU port. Group this on mt7530_setup() and
mt7531_setup_common() into mt753x_trap_frames() and call that.

Fixes: b8f126a8d543 ("net-next: dsa: add dsa support for Mediatek MT7530 switch")
Signed-off-by: Arınç ÜNAL <arinc.unal@arinc9.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/dsa/mt7530.c