2 * Copyright (c) 2009, 2010 Nicira Networks.
3 * Distributed under the terms of the GNU GPL version 2.
5 * Significant portions of this file may be copied from parts of the Linux
6 * kernel, by Linus Torvalds and others.
12 #include <linux/kernel.h>
13 #include <linux/spinlock.h>
14 #include <linux/types.h>
15 #include <linux/rcupdate.h>
16 #include <linux/gfp.h>
17 #include <linux/time.h>
19 #include "openvswitch/datapath-protocol.h"
24 struct sw_flow_actions {
26 unsigned int n_actions;
27 union odp_action actions[];
32 struct tbl_node tbl_node;
34 struct odp_flow_key key;
35 struct sw_flow_actions *sf_acts;
37 struct timespec used; /* Last used time. */
39 u8 ip_tos; /* IP TOS value. */
41 spinlock_t lock; /* Lock for values below. */
42 u64 packet_count; /* Number of packets matched. */
43 u64 byte_count; /* Number of bytes matched. */
44 u8 tcp_flags; /* Union of seen TCP flags. */
47 extern struct kmem_cache *flow_cache;
49 struct sw_flow_actions *flow_actions_alloc(size_t n_actions);
50 void flow_deferred_free(struct sw_flow *);
51 void flow_deferred_free_acts(struct sw_flow_actions *);
52 int flow_extract(struct sk_buff *, u16 in_port, struct odp_flow_key *);
53 void flow_used(struct sw_flow *, struct sk_buff *);
55 struct sw_flow *flow_cast(const struct tbl_node *);
56 u32 flow_hash(const struct odp_flow_key *key);
57 int flow_cmp(const struct tbl_node *, void *target);
58 void flow_free_tbl(struct tbl_node *);