1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2010 Rui Paulo <rpaulo@FreeBSD.org>
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 * $FreeBSD$
28 */
29
30 enum ieee80211_ratealgs {
31 IEEE80211_RATECTL_AMRR = 0,
32 IEEE80211_RATECTL_RSSADAPT = 1,
33 IEEE80211_RATECTL_ONOE = 2,
34 IEEE80211_RATECTL_SAMPLE = 3,
35 IEEE80211_RATECTL_NONE = 4,
36 IEEE80211_RATECTL_MAX
37 };
38
39 /* used fields for tx_complete() events */
40 #define IEEE80211_RATECTL_STATUS_PKTLEN 0x00000001
41 #define IEEE80211_RATECTL_STATUS_FINAL_RATE 0x00000002
42 #define IEEE80211_RATECTL_STATUS_SHORT_RETRY 0x00000004
43 #define IEEE80211_RATECTL_STATUS_LONG_RETRY 0x00000008
44 #define IEEE80211_RATECTL_STATUS_RSSI 0x00000010
45
46 /* failure reason */
47 enum ieee80211_ratectl_tx_fail_reason {
48 IEEE80211_RATECTL_TX_SUCCESS = 0,
49 IEEE80211_RATECTL_TX_FAIL_SHORT = 1, /* too many RTS retries */
50 IEEE80211_RATECTL_TX_FAIL_LONG = 2, /* too many retries */
51 IEEE80211_RATECTL_TX_FAIL_EXPIRED = 3, /* lifetime expired */
52 IEEE80211_RATECTL_TX_FAIL_UNSPECIFIED = 4, /* another reason */
53 };
54 #define IEEE80211_RATECTL_TX_FAIL_MAX \
55 (IEEE80211_RATECTL_TX_FAIL_UNSPECIFIED + 1)
56
57 struct ieee80211_ratectl_tx_status {
58 uint32_t flags; /* mark used fields */
59 enum ieee80211_ratectl_tx_fail_reason status; /* Tx status */
60
61 int pktlen; /* frame length */
62 int final_rate; /* transmission rate */
63 uint_fast8_t short_retries; /* RTS/CTS retries */
64 uint_fast8_t long_retries; /* ACK retries */
65 int8_t rssi; /* ACK RSSI */
66
67 uint8_t spare[15]; /* for future use */
68 };
69
70 /* used fields for tx_update() events */
71 #define IEEE80211_RATECTL_TX_STATS_NODE 0x00000001
72 #define IEEE80211_RATECTL_TX_STATS_RETRIES 0x00000002
73
74 struct ieee80211_ratectl_tx_stats {
75 uint32_t flags; /* mark used fields */
76
77 struct ieee80211_node *ni; /* receiver */
78 int nframes; /* transmitted frames */
79 int nsuccess; /* ACKed frames */
80 int nretries; /* number of retries */
81 };
82
83 struct ieee80211_ratectl {
84 const char *ir_name;
85 int (*ir_attach)(const struct ieee80211vap *);
86 void (*ir_detach)(const struct ieee80211vap *);
87 void (*ir_init)(struct ieee80211vap *);
88 void (*ir_deinit)(struct ieee80211vap *);
89 void (*ir_node_init)(struct ieee80211_node *);
90 void (*ir_node_deinit)(struct ieee80211_node *);
91 int (*ir_rate)(struct ieee80211_node *, void *, uint32_t);
92 void (*ir_tx_complete)(const struct ieee80211_node *,
93 const struct ieee80211_ratectl_tx_status *);
94 void (*ir_tx_update)(struct ieee80211vap *,
95 struct ieee80211_ratectl_tx_stats *);
96 void (*ir_setinterval)(const struct ieee80211vap *, int);
97 void (*ir_node_stats)(struct ieee80211_node *ni, struct sbuf *s);
98 };
99
100 void ieee80211_ratectl_register(int, const struct ieee80211_ratectl *);
101 void ieee80211_ratectl_unregister(int);
102 void ieee80211_ratectl_init(struct ieee80211vap *);
103 void ieee80211_ratectl_set(struct ieee80211vap *, int);
104
105 MALLOC_DECLARE(M_80211_RATECTL);
106
107 static __inline void
108 ieee80211_ratectl_deinit(struct ieee80211vap *vap)
109 {
110 vap->iv_rate->ir_deinit(vap);
111 }
112
113 static __inline void
114 ieee80211_ratectl_node_init(struct ieee80211_node *ni)
115 {
116 const struct ieee80211vap *vap = ni->ni_vap;
117
118 vap->iv_rate->ir_node_init(ni);
119 }
120
121 static __inline void
122 ieee80211_ratectl_node_deinit(struct ieee80211_node *ni)
123 {
124 const struct ieee80211vap *vap = ni->ni_vap;
125
126 vap->iv_rate->ir_node_deinit(ni);
127 }
128
129 static int __inline
130 ieee80211_ratectl_rate(struct ieee80211_node *ni, void *arg, uint32_t iarg)
131 {
132 const struct ieee80211vap *vap = ni->ni_vap;
133
134 return vap->iv_rate->ir_rate(ni, arg, iarg);
135 }
136
137 static __inline void
138 ieee80211_ratectl_tx_complete(const struct ieee80211_node *ni,
139 const struct ieee80211_ratectl_tx_status *status)
140 {
141 const struct ieee80211vap *vap = ni->ni_vap;
142
143 vap->iv_rate->ir_tx_complete(ni, status);
144 }
145
146 static __inline void
147 ieee80211_ratectl_tx_update(struct ieee80211vap *vap,
148 struct ieee80211_ratectl_tx_stats *stats)
149 {
150 if (vap->iv_rate->ir_tx_update == NULL)
151 return;
152 vap->iv_rate->ir_tx_update(vap, stats);
153 }
154
155 static __inline void
156 ieee80211_ratectl_setinterval(const struct ieee80211vap *vap, int msecs)
157 {
158 if (vap->iv_rate->ir_setinterval == NULL)
159 return;
160 vap->iv_rate->ir_setinterval(vap, msecs);
161 }
162
163 static __inline void
164 ieee80211_ratectl_node_stats(struct ieee80211_node *ni, struct sbuf *s)
165 {
166 const struct ieee80211vap *vap = ni->ni_vap;
167
168 if (vap->iv_rate->ir_node_stats == NULL)
169 return;
170 vap->iv_rate->ir_node_stats(ni, s);
171 }
Cache object: 01411305280d6858319b2d8197018a48
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