Re: [PATCH net 1/3] net: hsr: privatize interlink-bound skbs before address mutation

The skb_cow() is placed before the address mutation and, thanks to the
short-circuit, only runs when the interlink skb can alias a live
consumer: master-originated frames, or ring frames the master also
consumes (is_local_dest and not is_local_exclusive). The zero-copy ring
paths keep their behavior. On allocation failure the frame is dropped
with rx_dropped accounting, matching the tagged-frame creation failure
path. Reads correctly to me.

Reviewed-by: Ali Ahmet Memis <[email protected]>