IB/ipoib: Fix ndo_get_iflink

Currently, iflink of the parent interface was always accessed, even
when interface didn't have a parent and hence we crashed there.

Handle the interface types properly: for a child interface, return
the ifindex of the parent, for parent interface, return its ifindex.

For child devices, make sure to set the parent pointer prior to
invoking register_netdevice(), this allows the new ndo to be called
by the stack immediately after the child device is registered.

Fixes: 5aa7add8f14b ('infiniband/ipoib: implement ndo_get_iflink')
Reported-by: Honggang Li <[email protected]>
Signed-off-by: Erez Shitrit <[email protected]>
Signed-off-by: Honggang Li <[email protected]>
Reviewed-By: Jason Gunthorpe <[email protected]>+
Acked-by: Nicolas Dichtel <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

0 files changed, 0 insertions, 0 deletions