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/if_ether.h>
17 #include <linux/jiffies.h>
18 #include <linux/time.h>
20 #include "openvswitch/datapath-protocol.h"
25 struct sw_flow_actions {
27 unsigned int n_actions;
28 union odp_action actions[];
33 struct tbl_node tbl_node;
35 struct odp_flow_key key;
36 struct sw_flow_actions *sf_acts;
41 spinlock_t lock; /* Lock for values below. */
42 unsigned long used; /* Last used time (in jiffies). */
43 u64 packet_count; /* Number of packets matched. */
44 u64 byte_count; /* Number of bytes matched. */
45 u8 tcp_flags; /* Union of seen TCP flags. */
50 __be16 ar_hrd; /* format of hardware address */
51 __be16 ar_pro; /* format of protocol address */
52 unsigned char ar_hln; /* length of hardware address */
53 unsigned char ar_pln; /* length of protocol address */
54 __be16 ar_op; /* ARP opcode (command) */
56 /* Ethernet+IPv4 specific members. */
57 unsigned char ar_sha[ETH_ALEN]; /* sender hardware address */
58 unsigned char ar_sip[4]; /* sender IP address */
59 unsigned char ar_tha[ETH_ALEN]; /* target hardware address */
60 unsigned char ar_tip[4]; /* target IP address */
61 } __attribute__((packed));
66 struct sw_flow *flow_alloc(void);
67 void flow_deferred_free(struct sw_flow *);
68 void flow_free_tbl(struct tbl_node *);
70 struct sw_flow_actions *flow_actions_alloc(size_t n_actions);
71 void flow_deferred_free_acts(struct sw_flow_actions *);
73 void flow_hold(struct sw_flow *);
74 void flow_put(struct sw_flow *);
76 int flow_extract(struct sk_buff *, u16 in_port, struct odp_flow_key *, bool *is_frag);
77 void flow_used(struct sw_flow *, struct sk_buff *);
79 u32 flow_hash(const struct odp_flow_key *key);
80 int flow_cmp(const struct tbl_node *, void *target);
82 static inline struct sw_flow *flow_cast(const struct tbl_node *node)
84 return container_of(node, struct sw_flow, tbl_node);