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net: dsa: add tagging ops to port

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The DSA tagging protocol operations are specific to each CPU port,
thus the dsa_device_ops pointer belongs to the dsa_port structure.

>From now on assign a slave's xmit copy from its CPU port tagging
operations. This will ease the future support for multiple CPU ports.

Also keep the tag_ops at the beginning of the dsa_port structure so that
we ensure copies for hot path are in cacheline 1.

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
2017-09-29 17:19:18 -04:00
committed by David S. Miller
parent 62fc958762
commit 152402483e
5 changed files with 7 additions and 3 deletions
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2
net/dsa/dsa_priv.h
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@@ -66,7 +66,7 @@ struct dsa_notifier_vlan_info {
};
struct dsa_slave_priv {
/* Copy of dp->ds->dst->tag_ops->xmit for faster access in hot path */
/* Copy of CPU port xmit for faster access in slave transmit hot path */
struct sk_buff * (*xmit)(struct sk_buff *skb,
struct net_device *dev);