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https://github.com/openvswitch/ovs
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42 lines
1.3 KiB
C
42 lines
1.3 KiB
C
/*
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* Copyright (c) 2008, 2009 Nicira Networks.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef QUEUE_H
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#define QUEUE_H 1
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#include <stdbool.h>
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/* Packet queue. */
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struct ovs_queue {
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int n; /* Number of queued packets. */
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struct ofpbuf *head; /* First queued packet, null if n == 0. */
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struct ofpbuf *tail; /* Last queued packet, null if n == 0. */
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};
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void queue_init(struct ovs_queue *);
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void queue_destroy(struct ovs_queue *);
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void queue_clear(struct ovs_queue *);
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void queue_advance_head(struct ovs_queue *, struct ofpbuf *next);
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void queue_push_tail(struct ovs_queue *, struct ofpbuf *);
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struct ofpbuf *queue_pop_head(struct ovs_queue *);
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static inline bool queue_is_empty(const struct ovs_queue *q)
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{
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return q->n == 0;
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}
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#endif /* queue.h */
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