diff options
Diffstat (limited to 'lib/queue.h')
| -rw-r--r-- | lib/queue.h | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/lib/queue.h b/lib/queue.h new file mode 100644 index 00000000..597d5394 --- /dev/null +++ b/lib/queue.h @@ -0,0 +1,34 @@ +/* + * 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 */ |