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