nfp: refuse offloading filters that redirects to upper devices

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Previously we did not ensure that a netdev is a representative netdev
before dereferencing its private data. This can occur when an upper netdev
is created on a representative netdev. This patch corrects this by first
ensuring that the netdev is a representative netdev before using it.
Checking only switchdev_port_same_parent_id is not sufficient to ensure
that we can safely use the netdev. Failing to check that the netdev is also
a representative netdev would result in incorrect dereferencing.

Fixes: 1a1e586f54 ("nfp: add basic action capabilities to flower offloads")
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Pieter Jansen van Vuuren <pieter.jansenvanvuuren@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Pieter Jansen van Vuuren 2017-10-25 11:47:05 -07:00 • committed by David S. Miller

parent 0f5da659d8

commit d309ae5c6a

1 changed files with 2 additions and 0 deletions

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drivers/net/ethernet/netronome/nfp/flower/action.c

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