/*- * 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 *); /* * Don't call these directly from the stack; they are vap methods * that should be overridden. */ 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_sta_tim_notify(struct ieee80211vap *vap, int set); void ieee80211_sta_ps_timer_check(struct ieee80211vap *vap); /* XXX what's this? */ void ieee80211_power_poll(struct ieee80211com *); #endif /* _NET80211_IEEE80211_POWER_H_ */ |