Commit 04fb9124 authored by Per Forlin's avatar Per Forlin Committed by David S. Miller
Browse files

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: default avatarPer Forlin <perfn@axis.com>
Reviewed-by: default avatarFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 5fdcce21

net/dsa/tag_qca.c

+1 −1
Original line number Diff line number Diff line
@@ -33,7 +33,7 @@ static struct sk_buff *qca_tag_xmit(struct sk_buff *skb, struct net_device *dev) 
	struct dsa_port *dp = dsa_slave_to_port(dev);

	u16 *phdr, hdr;



	if (skb_cow_head(skb, 0) < 0)

	if (skb_cow_head(skb, QCA_HDR_LEN) < 0)

		return NULL;



	skb_push(skb, QCA_HDR_LEN);