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net: dsa: comment hot path requirements

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The DSA layer uses inline helpers and copy of the tagging functions for
faster access in hot path. Add comments to detail that.

Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vivien Didelot 2017-06-01 16:07:11 -04:00 • committed by David S. Miller
parent 0266f79778
commit 73a7ece8f7
2 changed files with 4 additions and 0 deletions
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1
net/dsa/dsa_priv.h
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@ -73,6 +73,7 @@ struct dsa_device_ops {
};
struct dsa_slave_priv {
/* Copy of dp->ds->dst->tag_ops->xmit for faster access in hot path */
struct sk_buff * (*xmit)(struct sk_buff *skb,
struct net_device *dev);