net: dsa: Discard frames from unused ports

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[ Upstream commit fc5f33768c ]

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.

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>

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Andrew Lunn 2018-04-07 20:37:40 +02:00 • committed by Greg Kroah-Hartman

parent 1255b1f0df

commit 505e1b27d9

1 changed files with 7 additions and 1 deletions

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net/dsa/dsa_priv.h

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