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/*
* Copyright (c) 2008, 2009 Nicira Networks.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef QUEUE_H
#define QUEUE_H 1
/* Packet queue. */
struct ovs_queue {
int n; /* Number of queued packets. */
struct ofpbuf *head; /* First queued packet, null if n == 0. */
struct ofpbuf *tail; /* Last queued packet, null if n == 0. */
};
void queue_init(struct ovs_queue *);
void queue_destroy(struct ovs_queue *);
void queue_clear(struct ovs_queue *);
void queue_advance_head(struct ovs_queue *, struct ofpbuf *next);
void queue_push_tail(struct ovs_queue *, struct ofpbuf *);
struct ofpbuf *queue_pop_head(struct ovs_queue *);
#endif /* queue.h */
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