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63092fce49
to queue frames previously encapsulated on a separate high priority list that is dispatched before the unencapsulated frames (to preserve order).
80 lines
3.2 KiB
C
80 lines
3.2 KiB
C
/*-
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* Copyright (c) 2002-2008 Sam Leffler, Errno Consulting
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _NET80211_IEEE80211_POWER_H_
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#define _NET80211_IEEE80211_POWER_H_
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struct ieee80211com;
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struct ieee80211vap;
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struct ieee80211_node;
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struct mbuf;
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/*
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* Power save packet queues. There are two queues, one
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* for frames coming from the net80211 layer and the other
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* for frames that come from the driver. Frames from the
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* driver are expected to have M_ENCAP marked to indicate
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* they have already been encapsulated and are treated as
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* higher priority: they are sent first when flushing the
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* queue on a power save state change or in response to a
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* ps-poll frame.
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*
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* Note that frames sent from the high priority queue are
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* fed directly to the driver without going through
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* ieee80211_start again; drivers that send up encap'd
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* frames are required to handle them when they come back.
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*/
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struct ieee80211_psq {
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ieee80211_psq_lock_t psq_lock;
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int psq_len;
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int psq_maxlen;
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int psq_drops;
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struct ieee80211_psq_head {
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struct mbuf *head;
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struct mbuf *tail;
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int len;
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} psq_head[2]; /* 2 priorities */
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};
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void ieee80211_psq_init(struct ieee80211_psq *, const char *);
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void ieee80211_psq_cleanup(struct ieee80211_psq *);
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void ieee80211_power_attach(struct ieee80211com *);
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void ieee80211_power_detach(struct ieee80211com *);
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void ieee80211_power_vattach(struct ieee80211vap *);
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void ieee80211_power_vdetach(struct ieee80211vap *);
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void ieee80211_power_latevattach(struct ieee80211vap *);
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struct mbuf *ieee80211_node_psq_dequeue(struct ieee80211_node *ni, int *qlen);
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int ieee80211_node_psq_drain(struct ieee80211_node *);
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int ieee80211_node_psq_age(struct ieee80211_node *);
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int ieee80211_pwrsave(struct ieee80211_node *, struct mbuf *);
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void ieee80211_node_pwrsave(struct ieee80211_node *, int enable);
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void ieee80211_sta_pwrsave(struct ieee80211vap *, int enable);
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void ieee80211_power_poll(struct ieee80211com *);
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#endif /* _NET80211_IEEE80211_POWER_H_ */
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