Mikio Hara
1c9b2f7b2d
Note: Now regression test sets *and* tests the IPv4 DSCP bits. Test script was renamed from test_set_nw_tos to test_set_n_match_nw_tos.
95 lines
3.7 KiB
C
95 lines
3.7 KiB
C
/* Copyright (c) 2008, 2009 The Board of Trustees of The Leland Stanford
|
|
* Junior University
|
|
*
|
|
* We are making the OpenFlow specification and associated documentation
|
|
* (Software) available for public use and benefit with the expectation
|
|
* that others will use, modify and enhance the Software and contribute
|
|
* those enhancements back to the community. However, since we would
|
|
* like to make the Software available for broadest use, with as few
|
|
* restrictions as possible permission is hereby granted, free of
|
|
* charge, to any person obtaining a copy of this Software to deal in
|
|
* the Software under the copyrights without restriction, including
|
|
* without limitation the rights to use, copy, modify, merge, publish,
|
|
* distribute, sublicense, and/or sell copies of the Software, and to
|
|
* permit persons to whom the Software is furnished to do so, subject to
|
|
* the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be
|
|
* included in all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
|
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
|
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
|
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
* SOFTWARE.
|
|
*
|
|
* The name and trademarks of copyright holder(s) may NOT be used in
|
|
* advertising or publicity pertaining to the Software or any
|
|
* derivatives without specific, written prior permission.
|
|
*/
|
|
#ifndef FLOW_H
|
|
#define FLOW_H 1
|
|
|
|
#include <stdbool.h>
|
|
#include <stdint.h>
|
|
#include <string.h>
|
|
#include "hash.h"
|
|
#include "util.h"
|
|
|
|
struct ofp_match;
|
|
struct ofpbuf;
|
|
|
|
/* Identification data for a flow.
|
|
All fields are in network byte order.
|
|
In decreasing order by size, so that flow structures can be hashed or
|
|
compared bytewise. */
|
|
struct flow {
|
|
uint32_t nw_src; /* IP source address. */
|
|
uint32_t nw_dst; /* IP destination address. */
|
|
uint16_t in_port; /* Input switch port. */
|
|
uint16_t dl_vlan; /* Input VLAN id. */
|
|
uint16_t dl_type; /* Ethernet frame type. */
|
|
uint16_t tp_src; /* TCP/UDP source port. */
|
|
uint16_t tp_dst; /* TCP/UDP destination port. */
|
|
uint8_t dl_src[6]; /* Ethernet source address. */
|
|
uint8_t dl_dst[6]; /* Ethernet destination address. */
|
|
uint8_t dl_vlan_pcp; /* Input VLAN priority. */
|
|
uint8_t nw_tos; /* IPv4 DSCP. */
|
|
uint8_t nw_proto; /* IP protocol. */
|
|
uint8_t pad[3];
|
|
};
|
|
BUILD_ASSERT_DECL(sizeof(struct flow) == 36);
|
|
|
|
int flow_extract(struct ofpbuf *, uint16_t in_port, struct flow *);
|
|
void flow_fill_match(struct ofp_match *, const struct flow *,
|
|
uint32_t wildcards);
|
|
void flow_print(FILE *, const struct flow *);
|
|
static inline int flow_compare(const struct flow *, const struct flow *);
|
|
static inline bool flow_equal(const struct flow *, const struct flow *);
|
|
static inline size_t flow_hash(const struct flow *, uint32_t basis);
|
|
|
|
static inline int
|
|
flow_compare(const struct flow *a, const struct flow *b)
|
|
{
|
|
return memcmp(a, b, sizeof *a);
|
|
}
|
|
|
|
static inline bool
|
|
flow_equal(const struct flow *a, const struct flow *b)
|
|
{
|
|
return !flow_compare(a, b);
|
|
}
|
|
|
|
static inline size_t
|
|
flow_hash(const struct flow *flow, uint32_t basis)
|
|
{
|
|
BUILD_ASSERT_DECL(!(sizeof *flow % sizeof(uint32_t)));
|
|
return hash_words((const uint32_t *) flow,
|
|
sizeof *flow / sizeof(uint32_t), basis);
|
|
}
|
|
|
|
#endif /* flow.h */
|