1 /*-
2 * Copyright (c) 2002-2008 Sam Leffler, Errno Consulting
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 *
25 * $FreeBSD: src/sys/net80211/ieee80211_power.h,v 1.3 2008/10/26 01:04:46 sam Exp $
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 int ieee80211_pwrsave(struct ieee80211_node *, struct mbuf *);
75 void ieee80211_node_pwrsave(struct ieee80211_node *, int enable);
76 void ieee80211_sta_pwrsave(struct ieee80211vap *, int enable);
77
78 void ieee80211_power_poll(struct ieee80211com *);
79 #endif /* _NET80211_IEEE80211_POWER_H_ */
80
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