net_sched: cls_flow: add key rxhash
We can use rxhash to classify the traffic into flows. As rxhash maybe supplied by NIC or RPS, it is cheaper. Signed-off-by: Changli Gao <xiaosuo@gmail.com> Acked-by: Jamal Hadi Salim <hadi@cyberus.ca> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -332,6 +332,7 @@ enum {
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FLOW_KEY_SKUID,
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FLOW_KEY_SKUID,
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FLOW_KEY_SKGID,
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FLOW_KEY_SKGID,
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FLOW_KEY_VLAN_TAG,
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FLOW_KEY_VLAN_TAG,
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FLOW_KEY_RXHASH,
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__FLOW_KEY_MAX,
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__FLOW_KEY_MAX,
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};
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};
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@ -306,6 +306,11 @@ static u32 flow_get_vlan_tag(const struct sk_buff *skb)
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return tag & VLAN_VID_MASK;
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return tag & VLAN_VID_MASK;
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}
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}
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static u32 flow_get_rxhash(struct sk_buff *skb)
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{
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return skb_get_rxhash(skb);
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}
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static u32 flow_key_get(struct sk_buff *skb, int key)
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static u32 flow_key_get(struct sk_buff *skb, int key)
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{
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{
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switch (key) {
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switch (key) {
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@ -343,6 +348,8 @@ static u32 flow_key_get(struct sk_buff *skb, int key)
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return flow_get_skgid(skb);
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return flow_get_skgid(skb);
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case FLOW_KEY_VLAN_TAG:
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case FLOW_KEY_VLAN_TAG:
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return flow_get_vlan_tag(skb);
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return flow_get_vlan_tag(skb);
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case FLOW_KEY_RXHASH:
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return flow_get_rxhash(skb);
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default:
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default:
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WARN_ON(1);
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WARN_ON(1);
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return 0;
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return 0;
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