openvswitch: Mega flow implementation
Add wildcarded flow support in kernel datapath.
Wildcarded flow can improve OVS flow set up performance by avoid sending
matching new flows to the user space program. The exact performance boost
will largely dependent on wildcarded flow hit rate.
In case all new flows hits wildcard flows, the flow set up rate is
within 5% of that of linux bridge module.
Pravin has made significant contributions to this patch. Including API
clean ups and bug fixes.
Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: Andy Zhou <azhou@nicira.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
diff --git a/net/openvswitch/datapath.h b/net/openvswitch/datapath.h
index a914864..4d109c1 100644
--- a/net/openvswitch/datapath.h
+++ b/net/openvswitch/datapath.h
@@ -88,11 +88,13 @@
/**
* struct ovs_skb_cb - OVS data in skb CB
* @flow: The flow associated with this packet. May be %NULL if no flow.
+ * @pkt_key: The flow information extracted from the packet. Must be nonnull.
* @tun_key: Key for the tunnel that encapsulated this packet. NULL if the
* packet is not being tunneled.
*/
struct ovs_skb_cb {
struct sw_flow *flow;
+ struct sw_flow_key *pkt_key;
struct ovs_key_ipv4_tunnel *tun_key;
};
#define OVS_CB(skb) ((struct ovs_skb_cb *)(skb)->cb)
@@ -183,4 +185,8 @@
int ovs_execute_actions(struct datapath *dp, struct sk_buff *skb);
void ovs_dp_notify_wq(struct work_struct *work);
+
+#define OVS_NLERR(fmt, ...) \
+ pr_info_once("netlink: " fmt, ##__VA_ARGS__)
+
#endif /* datapath.h */