datapath: collect mega flow mask stats

[sliver-openvswitch.git] / datapath / datapath.h

diff --git a/datapath/datapath.h b/datapath/datapath.h
index 559df69..879a830 100644 (file)
--- a/datapath/datapath.h
+++ b/datapath/datapath.h
@@ -26,10 +26,9 @@
 #include <linux/skbuff.h>
 #include <linux/u64_stats_sync.h>
 
-#include "checksum.h"
 #include "compat.h"
 #include "flow.h"
-#include "tunnel.h"
+#include "flow_table.h"
 #include "vlan.h"
 #include "vport.h"
 
@@ -49,11 +48,15 @@
  * @n_lost: Number of received packets that had no matching flow in the flow
  * table that could not be sent to userspace (normally due to an overflow in
  * one of the datapath's queues).
+ * @n_mask_hit: Number of masks looked up for flow match.
+ *   @n_mask_hit / (@n_hit + @n_missed)  will be the average masks looked
+ *   up per packet.
  */
 struct dp_stats_percpu {
        u64 n_hit;
        u64 n_missed;
        u64 n_lost;
+       u64 n_mask_hit;
        struct u64_stats_sync sync;
 };
 
@@ -61,7 +64,7 @@ struct dp_stats_percpu {
  * struct datapath - datapath for flow-based packet switching
  * @rcu: RCU callback head for deferred destruction.
  * @list_node: Element in global 'dps' list.
- * @table: Current flow table.  Protected by ovs_mutex and RCU.
+ * @table: flow table.
  * @ports: Hash table for ports.  %OVSP_LOCAL port always exists.  Protected by
  * ovs_mutex and RCU.
  * @stats_percpu: Per-CPU datapath statistics.
@@ -75,7 +78,7 @@ struct datapath {
        struct list_head list_node;
 
        /* Flow table. */
-       struct flow_table __rcu *table;
+       struct flow_table table;
 
        /* Switch ports. */
        struct hlist_head *ports;
@@ -95,25 +98,11 @@ struct datapath {
  * @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.
- * @ip_summed: Consistently stores L4 checksumming status across different
- * kernel versions.
- * @csum_start: Stores the offset from which to start checksumming independent
- * of the transport header on all kernel versions.
- * packet was not received on a tunnel.
- * @vlan_tci: Provides a substitute for the skb->vlan_tci field on kernels
- * before 2.6.27.
  */
 struct ovs_skb_cb {
        struct sw_flow          *flow;
        struct sw_flow_key      *pkt_key;
        struct ovs_key_ipv4_tunnel  *tun_key;
-#ifdef NEED_CSUM_NORMALIZE
-       enum csum_type          ip_summed;
-       u16                     csum_start;
-#endif
-#ifdef NEED_VLAN_FIELD
-       u16                     vlan_tci;
-#endif
 };
 #define OVS_CB(skb) ((struct ovs_skb_cb *)(skb)->cb)
 
@@ -204,4 +193,8 @@ struct sk_buff *ovs_vport_cmd_build_info(struct vport *, u32 portid, u32 seq,
 
 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 */