1/*-
2 * Copyright (c) 2010 Rui Paulo <rpaulo@FreeBSD.org>
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 * $FreeBSD$
26 */
27
28enum ieee80211_ratealgs {
29	IEEE80211_RATECTL_AMRR		= 0,
30	IEEE80211_RATECTL_RSSADAPT	= 1,
31	IEEE80211_RATECTL_ONOE		= 2,
32	IEEE80211_RATECTL_SAMPLE	= 3,
33	IEEE80211_RATECTL_NONE		= 4,
34	IEEE80211_RATECTL_MAX
35};
36
37#define	IEEE80211_RATECTL_TX_SUCCESS	1
38#define	IEEE80211_RATECTL_TX_FAILURE	0
39
40struct ieee80211_ratectl {
41	const char *ir_name;
42	int	(*ir_attach)(const struct ieee80211vap *);
43	void	(*ir_detach)(const struct ieee80211vap *);
44	void	(*ir_init)(struct ieee80211vap *);
45	void	(*ir_deinit)(struct ieee80211vap *);
46	void	(*ir_node_init)(struct ieee80211_node *);
47	void	(*ir_node_deinit)(struct ieee80211_node *);
48	int	(*ir_rate)(struct ieee80211_node *, void *, uint32_t);
49	void	(*ir_tx_complete)(const struct ieee80211vap *,
50	    			  const struct ieee80211_node *, int,
51	    			  void *, void *);
52	void	(*ir_tx_update)(const struct ieee80211vap *,
53	    			const struct ieee80211_node *,
54	    			void *, void *, void *);
55	void	(*ir_setinterval)(const struct ieee80211vap *, int);
56};
57
58void	ieee80211_ratectl_register(int, const struct ieee80211_ratectl *);
59void	ieee80211_ratectl_unregister(int);
60void	ieee80211_ratectl_init(struct ieee80211vap *);
61void	ieee80211_ratectl_set(struct ieee80211vap *, int);
62
63#if defined (__HAIKU__)
64void ieee80211_ratectl_attach(struct ieee80211com *ic);
65void ieee80211_ratectl_detach(struct ieee80211com *ic);
66void ieee80211_ratectl_none_load(void);
67void ieee80211_ratectl_none_unload(void);
68void ieee80211_ratectl_amrr_load(void);
69void ieee80211_ratectl_amrr_unload(void);
70void ieee80211_ratectl_rssadapt_load(void);
71void ieee80211_ratectl_rssadapt_unload(void);
72#endif
73
74MALLOC_DECLARE(M_80211_RATECTL);
75
76static void __inline
77ieee80211_ratectl_deinit(struct ieee80211vap *vap)
78{
79	vap->iv_rate->ir_deinit(vap);
80}
81
82static void __inline
83ieee80211_ratectl_node_init(struct ieee80211_node *ni)
84{
85	const struct ieee80211vap *vap = ni->ni_vap;
86
87	vap->iv_rate->ir_node_init(ni);
88}
89
90static void __inline
91ieee80211_ratectl_node_deinit(struct ieee80211_node *ni)
92{
93	const struct ieee80211vap *vap = ni->ni_vap;
94
95	vap->iv_rate->ir_node_deinit(ni);
96}
97
98static int __inline
99ieee80211_ratectl_rate(struct ieee80211_node *ni, void *arg, uint32_t iarg)
100{
101	const struct ieee80211vap *vap = ni->ni_vap;
102
103	return vap->iv_rate->ir_rate(ni, arg, iarg);
104}
105
106static void __inline
107ieee80211_ratectl_tx_complete(const struct ieee80211vap *vap,
108    const struct ieee80211_node *ni, int status, void *arg1, void *arg2)
109{
110	vap->iv_rate->ir_tx_complete(vap, ni, status, arg1, arg2);
111}
112
113static void __inline
114ieee80211_ratectl_tx_update(const struct ieee80211vap *vap,
115    const struct ieee80211_node *ni, void *arg1, void *arg2, void *arg3)
116{
117	if (vap->iv_rate->ir_tx_update == NULL)
118		return;
119	vap->iv_rate->ir_tx_update(vap, ni, arg1, arg2, arg3);
120}
121
122static void __inline
123ieee80211_ratectl_setinterval(const struct ieee80211vap *vap, int msecs)
124{
125	if (vap->iv_rate->ir_setinterval == NULL)
126		return;
127	vap->iv_rate->ir_setinterval(vap, msecs);
128}
129