net: dsa: tag_qca: Make sure there is headroom for tag

Passing tag size to skb_cow_head will make sure
there is enough headroom for the tag data.
This change does not introduce any overhead in case there
is already available headroom for tag.

Signed-off-by: Per Forlin <>
Reviewed-by: Florian Fainelli <>
Signed-off-by: David S. Miller <>
1 file changed