sys/net80211/ieee80211_ageq.h

   1 /*-
   2  * Copyright (c) 2009 Sam Leffler, Errno Consulting
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  15  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  16  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  17  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  18  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  19  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  20  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  21  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  23  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  24  *
  25  * $FreeBSD$
  26  */
  27 #ifndef _NET80211_IEEE80211_STAGEQ_H_
  28 #define _NET80211_IEEE80211_STAGEQ_H_
  29
  30 struct ieee80211_node;
  31 struct mbuf;
  32
  33 struct ieee80211_ageq {
  34         ieee80211_ageq_lock_t   aq_lock;
  35         int                     aq_len;         /* # items on queue */
  36         int                     aq_maxlen;      /* max queue length */
  37         int                     aq_drops;       /* frames dropped */
  38         struct mbuf             *aq_head;       /* frames linked w/ m_nextpkt */
  39         struct mbuf             *aq_tail;       /* last frame in queue */
  40 };
  41
  42 void    ieee80211_ageq_init(struct ieee80211_ageq *, int maxlen,
  43             const char *name);
  44 void    ieee80211_ageq_cleanup(struct ieee80211_ageq *);
  45 void    ieee80211_ageq_mfree(struct mbuf *);
  46 int     ieee80211_ageq_append(struct ieee80211_ageq *, struct mbuf *,
  47             int age);
  48 void    ieee80211_ageq_drain(struct ieee80211_ageq *);
  49 void    ieee80211_ageq_drain_node(struct ieee80211_ageq *,
  50             struct ieee80211_node *);
  51 struct mbuf *ieee80211_ageq_age(struct ieee80211_ageq *, int quanta);
  52 struct mbuf *ieee80211_ageq_remove(struct ieee80211_ageq *,
  53             struct ieee80211_node *match);
  54 #endif /* _NET80211_IEEE80211_STAGEQ_H_ */