datapath: Abstract tunneling implementation from GRE.

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

diff --git a/datapath/flow.h b/datapath/flow.h
index 44cc3a6..534c7af 100644 (file)
--- a/datapath/flow.h
+++ b/datapath/flow.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2009 Nicira Networks.
+ * Copyright (c) 2009, 2010 Nicira Networks.
  * Distributed under the terms of the GNU GPL version 2.
  *
  * Significant portions of this file may be copied from parts of the Linux
@@ -14,8 +14,11 @@
 #include <linux/types.h>
 #include <linux/rcupdate.h>
 #include <linux/gfp.h>
+#include <linux/jiffies.h>
+#include <linux/time.h>
 
 #include "openvswitch/datapath-protocol.h"
+#include "table.h"
 
 struct sk_buff;
 
@@ -27,14 +30,13 @@ struct sw_flow_actions {
 
 struct sw_flow {
        struct rcu_head rcu;
+       struct tbl_node tbl_node;
+
        struct odp_flow_key key;
        struct sw_flow_actions *sf_acts;
 
-       struct timespec used;   /* Last used time. */
-
-       u8 ip_tos;              /* IP TOS value. */
-
        spinlock_t lock;        /* Lock for values below. */
+       unsigned long used;     /* Last used time (in jiffies). */
        u64 packet_count;       /* Number of packets matched. */
        u64 byte_count;         /* Number of bytes matched. */
        u8 tcp_flags;           /* Union of seen TCP flags. */
@@ -43,13 +45,21 @@ struct sw_flow {
 extern struct kmem_cache *flow_cache;
 
 struct sw_flow_actions *flow_actions_alloc(size_t n_actions);
-void flow_free(struct sw_flow *);
 void flow_deferred_free(struct sw_flow *);
 void flow_deferred_free_acts(struct sw_flow_actions *);
 int flow_extract(struct sk_buff *, u16 in_port, struct odp_flow_key *);
 void flow_used(struct sw_flow *, struct sk_buff *);
 
+u32 flow_hash(const struct odp_flow_key *key);
+int flow_cmp(const struct tbl_node *, void *target);
+void flow_free_tbl(struct tbl_node *);
+
 int flow_init(void);
 void flow_exit(void);
 
+static inline struct sw_flow *flow_cast(const struct tbl_node *node)
+{
+       return container_of(node, struct sw_flow, tbl_node);
+}
+
 #endif /* flow.h */