Ben Pfaff
903d0940fb
Now it helps clients track the number of in-flight messages, but lets the clients do the limiting themselves. This will come in handy for packet-in rate limiting (in an upcoming commit), in which we want to track in-flight packet-in messages separately from other in-flight messages.
52 lines
2.2 KiB
C
52 lines
2.2 KiB
C
/* Copyright (c) 2008 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 QUEUE_H
|
|
#define QUEUE_H 1
|
|
|
|
/* Packet queue. */
|
|
struct queue {
|
|
int n; /* Number of queued packets. */
|
|
struct buffer *head; /* First queued packet, null if n == 0. */
|
|
struct buffer *tail; /* Last queued packet, null if n == 0. */
|
|
};
|
|
|
|
void queue_init(struct queue *);
|
|
void queue_destroy(struct queue *);
|
|
void queue_clear(struct queue *);
|
|
void queue_advance_head(struct queue *, struct buffer *next);
|
|
void queue_push_tail(struct queue *, struct buffer *);
|
|
struct buffer *queue_pop_head(struct queue *);
|
|
|
|
#endif /* queue.h */
|