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net: dsa: Move skb_unshare() to dsa_switch_rcv()

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All DSA tag receive functions need to unshare the skb before mangling it, move
this to the generic dsa_switch_rcv() function which will allow us to make the
tag receive function return their mangled skb without caring about freeing a
NULL skb.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Florian Fainelli 2017-04-08 08:55:22 -07:00 • committed by David S. Miller
parent 9d7f9c4f78
commit 16c5dcb13a
7 changed files with 4 additions and 30 deletions
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4
net/dsa/dsa.c
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@ -906,6 +906,10 @@ static int dsa_switch_rcv(struct sk_buff *skb, struct net_device *dev,
return 0;
}
skb = skb_unshare(skb, GFP_ATOMIC);
if (!skb)
return 0;
return dst->rcv(skb, dev, pt, orig_dev);
}