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authorFlorian Fainelli <f.fainelli@gmail.com>2018-04-25 16:21:51 -0700
committerDavid S. Miller <davem@davemloft.net>2018-04-27 13:14:44 -0400
commit1f3ccc3c3fc26468be00392ef0b2c215f9c9d054 (patch)
tree18ebf5096f3245e128f803cfdefd7c8df98687bd /net/sctp
parent9faedd643fd9f3a53f10ca270d3bbd436b908766 (diff)
net: systemport: Correclty disambiguate driver instances
While adding the DSA notifier, we will be sending DSA notifications with info->master that is going to point to a particular net_device instance. Our logic in bcm_sysport_map_queues() correctly disambiguates net_device instances that are not covered by our own driver, but it will not make sure that info->master points to a particular driver instance that we are interested in. In a system where e.g: two or more SYSTEMPORT instances are registered, this would lead in programming two or more times the queue mapping, completely messing with the logic which does the queue/port allocation and tracking. Fix this by looking at the notifier_block pointer which is unique per instance and allows us to go back to our driver private structure, and in turn to the backing net_device instance. Fixes: d156576362c0 ("net: systemport: Establish lower/upper queue mapping") Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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