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>
diff --git a/net/sched/cls_flow.c b/net/sched/cls_flow.c
index cd709f1..5b271a1 100644
--- a/net/sched/cls_flow.c
+++ b/net/sched/cls_flow.c
@@ -306,6 +306,11 @@
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 @@
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;