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Commit 739a91ef authored by Changli Gao's avatar Changli Gao Committed by David S. Miller
Browse files

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: default avatarChangli Gao <xiaosuo@gmail.com>
Acked-by: default avatarJamal Hadi Salim <hadi@cyberus.ca>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 81ce790b

include/linux/pkt_cls.h

+1 −0
Original line number Diff line number Diff line
@@ -332,6 +332,7 @@ enum { 
	FLOW_KEY_SKUID,

	FLOW_KEY_SKGID,

	FLOW_KEY_VLAN_TAG,

	FLOW_KEY_RXHASH,

	__FLOW_KEY_MAX,

};

net/sched/cls_flow.c

+7 −0
Original line number Diff line number Diff line
@@ -306,6 +306,11 @@ static u32 flow_get_vlan_tag(const struct sk_buff *skb) 
	return tag & VLAN_VID_MASK;

}



static u32 flow_get_rxhash(struct sk_buff *skb)

{

	return skb_get_rxhash(skb);

}



static u32 flow_key_get(struct sk_buff *skb, int key)

{

	switch (key) {
@@ -343,6 +348,8 @@ static u32 flow_key_get(struct sk_buff *skb, int key) 
		return flow_get_skgid(skb);

	case FLOW_KEY_VLAN_TAG:

		return flow_get_vlan_tag(skb);

	case FLOW_KEY_RXHASH:

		return flow_get_rxhash(skb);

	default:

		WARN_ON(1);

		return 0;