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net: dsa: tag_lan9303: let DSA core deal with TX reallocation 

Now that we have a central TX reallocation procedure that accounts for
the tagger's needed headroom in a generic way, we can remove the
skb_cow_head call.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Vladimir Oltean 2020-11-01 21:16:15 +02:00 committed by Jakub Kicinski
parent 941f66beb7
commit 6ed94135f5
1 changed files with 0 additions and 9 deletions
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9
net/dsa/tag_lan9303.c
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@ -58,15 +58,6 @@ static struct sk_buff *lan9303_xmit(struct sk_buff *skb, struct net_device *dev)
__be16 *lan9303_tag;
u16 tag;
/* insert a special VLAN tag between the MAC addresses
* and the current ethertype field.
*/
if (skb_cow_head(skb, LAN9303_TAG_LEN) < 0) {
dev_dbg(&dev->dev,
"Cannot make room for the special tag. Dropping packet\n");
return NULL;
}
/* provide 'LAN9303_TAG_LEN' bytes additional space */
skb_push(skb, LAN9303_TAG_LEN);