ibmvnic: Properly dispose of all skbs during a failover.
During a reset, there may have been transmits in flight that are no longer valid and cannot be fulfilled. Resetting and clearing the queues is insufficient; each skb also needs to be explicitly freed so that upper levels are not left waiting for confirmation of a transmit that will never happen. If this happens frequently enough, the apparent backlog will cause TCP to begin "congestion control" unnecessarily, culminating in permanently decreased throughput. Fixes: d7c0ef36 ("ibmvnic: Free and re-allocate scrqs when tx/rx scrqs change") Tested-by: Nick Child <nnac123@linux.ibm.com> Reviewed-by: Brian King <brking@linux.vnet.ibm.com> Signed-off-by: Rick Lindsley <ricklind@us.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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