1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2002-2008 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 #ifndef _NET80211_IEEE80211_POWER_H_ 28 #define _NET80211_IEEE80211_POWER_H_ 29 30 struct ieee80211com; 31 struct ieee80211vap; 32 struct ieee80211_node; 33 struct mbuf; 34 35 /* 36 * Power save packet queues. There are two queues, one 37 * for frames coming from the net80211 layer and the other 38 * for frames that come from the driver. Frames from the 39 * driver are expected to have M_ENCAP marked to indicate 40 * they have already been encapsulated and are treated as 41 * higher priority: they are sent first when flushing the 42 * queue on a power save state change or in response to a 43 * ps-poll frame. 44 * 45 * Note that frames sent from the high priority queue are 46 * fed directly to the driver without going through 47 * ieee80211_start again; drivers that send up encap'd 48 * frames are required to handle them when they come back. 49 */ 50 struct ieee80211_psq { 51 ieee80211_psq_lock_t psq_lock; 52 int psq_len; 53 int psq_maxlen; 54 int psq_drops; 55 struct ieee80211_psq_head { 56 struct mbuf *head; 57 struct mbuf *tail; 58 int len; 59 } psq_head[2]; /* 2 priorities */ 60 }; 61 62 void ieee80211_psq_init(struct ieee80211_psq *, const char *); 63 void ieee80211_psq_cleanup(struct ieee80211_psq *); 64 65 void ieee80211_power_attach(struct ieee80211com *); 66 void ieee80211_power_detach(struct ieee80211com *); 67 void ieee80211_power_vattach(struct ieee80211vap *); 68 void ieee80211_power_vdetach(struct ieee80211vap *); 69 void ieee80211_power_latevattach(struct ieee80211vap *); 70 71 struct mbuf *ieee80211_node_psq_dequeue(struct ieee80211_node *ni, int *qlen); 72 int ieee80211_node_psq_drain(struct ieee80211_node *); 73 int ieee80211_node_psq_age(struct ieee80211_node *); 74 75 /* 76 * Don't call these directly from the stack; they are vap methods 77 * that should be overridden. 78 */ 79 int ieee80211_pwrsave(struct ieee80211_node *, struct mbuf *); 80 void ieee80211_node_pwrsave(struct ieee80211_node *, int enable); 81 void ieee80211_sta_pwrsave(struct ieee80211vap *, int enable); 82 void ieee80211_sta_tim_notify(struct ieee80211vap *vap, int set); 83 void ieee80211_sta_ps_timer_check(struct ieee80211vap *vap); 84 85 /* XXX what's this? */ 86 void ieee80211_power_poll(struct ieee80211com *); 87 #endif /* _NET80211_IEEE80211_POWER_H_ */ 88