The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/net80211/ieee80211_ageq.h

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

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