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Andrew Lunn 30593709f8 net: dsa: Discard frames from unused ports

commit fc5f33768c upstream.

The Marvell switches under some conditions will pass a frame to the
host with the port being the CPU port. Such frames are invalid, and
should be dropped. Not dropping them can result in a crash when
incrementing the receive statistics for an invalid port.

This has been reworked for 4.14, which does not have the central
dsa_master_find_slave() function, so each tag driver needs to check.

Reported-by: Chris Healy <cphealy@gmail.com>
Fixes: 91da11f870 ("net: Distributed Switch Architecture protocol support")
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2018-04-24 09:36:39 +02:00

dsa2.c

net: dsa: check master device before put

2017-10-25 10:49:14 +09:00

dsa_priv.h

net-next: dsa: move struct dsa_device_ops to the global header file

2017-08-09 22:51:47 -07:00

dsa.c

dsa: remove unused net_device arg from handlers

2017-08-21 10:39:11 -07:00

Kconfig

dsa: add support for Microchip KSZ tail tagging