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| author | Vivien Didelot | 2017-06-01 22:07:11 +0200 |
|---|---|---|
| committer | David S. Miller | 2017-06-01 23:34:56 +0200 |
| commit | 73a7ece8f70c955464080e434b5324bcdfdcb1b1 (patch) | |
| tree | 7fe736c325597b74745ebe2cf828c9e209ebf70d | |
| parent | mlxsw: spectrum: Add bridge dependency for spectrum (diff) | |
| download | kernel-qcow2-linux-73a7ece8f70c955464080e434b5324bcdfdcb1b1.tar.gz kernel-qcow2-linux-73a7ece8f70c955464080e434b5324bcdfdcb1b1.tar.xz kernel-qcow2-linux-73a7ece8f70c955464080e434b5324bcdfdcb1b1.zip | |
net: dsa: comment hot path requirements
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>
| -rw-r--r-- | include/net/dsa.h | 3 | ||||
| -rw-r--r-- | net/dsa/dsa_priv.h | 1 |
2 files changed, 4 insertions, 0 deletions
diff --git a/include/net/dsa.h b/include/net/dsa.h index 7de1234ba136..18ca0a935c96 100644 --- a/include/net/dsa.h +++ b/include/net/dsa.h @@ -127,6 +127,8 @@ struct dsa_switch_tree { * protocol to use. */ struct net_device *master_netdev; + + /* Copy of tag_ops->rcv for faster access in hot path */ struct sk_buff * (*rcv)(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt, @@ -465,6 +467,7 @@ struct mii_bus *dsa_host_dev_to_mii_bus(struct device *dev); struct net_device *dsa_dev_to_net_device(struct device *dev); +/* Keep inline for faster access in hot path */ static inline bool dsa_uses_tagged_protocol(struct dsa_switch_tree *dst) { return dst->rcv != NULL; diff --git a/net/dsa/dsa_priv.h b/net/dsa/dsa_priv.h index 7459d5735d8b..db2a7b9edfb8 100644 --- a/net/dsa/dsa_priv.h +++ b/net/dsa/dsa_priv.h @@ -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); |