902840a5db
This transitions the VAP in and out of SLEEP state based on: * whether there's been an active transmission in the last (hardcoded) 500ms; * whether the TIM from the AP indicates there is data available. It uses the beacon reception to trigger the active traffic check. This way there's no further timer running to wake up the CPU from its own sleep states. Right now the VAP isn't woken up for multicast traffic - mostly because the only NIC I plan on doing this for right will auto wakeup and stay awake for multicast traffic indicated in the TIM. So I don't have to manually keep the hardware awake. This doesn't do anything if the NIC doesn't advertise it implements the new SWSLEEP capability AND if the VAP doesn't have powersave enabled. It also doesn't do much with ath(4) as it doesn't currently implement the SLEEP state. Tested: * AR5416, STA mode (with local ath(4) changes)
88 lines
3.4 KiB
C
88 lines
3.4 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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/*
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* Don't call these directly from the stack; they are vap methods
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* that should be overridden.
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*/
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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_sta_tim_notify(struct ieee80211vap *vap, int set);
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void ieee80211_sta_ps_timer_check(struct ieee80211vap *vap);
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/* XXX what's this? */
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void ieee80211_power_poll(struct ieee80211com *);
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#endif /* _NET80211_IEEE80211_POWER_H_ */
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