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authorJohannes Berg <johannes@sipsolutions.net>2008-04-08 15:14:40 -0400
committerJohn W. Linville <linville@tuxdriver.com>2008-04-08 16:44:45 -0400
commit2c8dccc77420fb7433da5674818959d3499d35be (patch)
tree2da037732b78a4796254b485f0c591d9625b7d1e /net/mac80211/ieee80211_rate.c
parent3b96766f0e643f52ae19e134664df6730c737e87 (diff)
mac80211: rename files
This patch renames all mac80211 files (except ieee80211_i.h) to get rid of the useless ieee80211_ prefix. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/mac80211/ieee80211_rate.c')
-rw-r--r--net/mac80211/ieee80211_rate.c249
1 files changed, 0 insertions, 249 deletions
diff --git a/net/mac80211/ieee80211_rate.c b/net/mac80211/ieee80211_rate.c
deleted file mode 100644
index 4de06f128d90..000000000000
--- a/net/mac80211/ieee80211_rate.c
+++ /dev/null
@@ -1,249 +0,0 @@
1/*
2 * Copyright 2002-2005, Instant802 Networks, Inc.
3 * Copyright 2005-2006, Devicescape Software, Inc.
4 * Copyright (c) 2006 Jiri Benc <jbenc@suse.cz>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
10
11#include <linux/kernel.h>
12#include <linux/rtnetlink.h>
13#include "ieee80211_rate.h"
14#include "ieee80211_i.h"
15
16struct rate_control_alg {
17 struct list_head list;
18 struct rate_control_ops *ops;
19};
20
21static LIST_HEAD(rate_ctrl_algs);
22static DEFINE_MUTEX(rate_ctrl_mutex);
23
24static char *ieee80211_default_rc_algo = CONFIG_MAC80211_RC_DEFAULT;
25module_param(ieee80211_default_rc_algo, charp, 0644);
26MODULE_PARM_DESC(ieee80211_default_rc_algo,
27 "Default rate control algorithm for mac80211 to use");
28
29int ieee80211_rate_control_register(struct rate_control_ops *ops)
30{
31 struct rate_control_alg *alg;
32
33 if (!ops->name)
34 return -EINVAL;
35
36 mutex_lock(&rate_ctrl_mutex);
37 list_for_each_entry(alg, &rate_ctrl_algs, list) {
38 if (!strcmp(alg->ops->name, ops->name)) {
39 /* don't register an algorithm twice */
40 WARN_ON(1);
41 mutex_unlock(&rate_ctrl_mutex);
42 return -EALREADY;
43 }
44 }
45
46 alg = kzalloc(sizeof(*alg), GFP_KERNEL);
47 if (alg == NULL) {
48 mutex_unlock(&rate_ctrl_mutex);
49 return -ENOMEM;
50 }
51 alg->ops = ops;
52
53 list_add_tail(&alg->list, &rate_ctrl_algs);
54 mutex_unlock(&rate_ctrl_mutex);
55
56 return 0;
57}
58EXPORT_SYMBOL(ieee80211_rate_control_register);
59
60void ieee80211_rate_control_unregister(struct rate_control_ops *ops)
61{
62 struct rate_control_alg *alg;
63
64 mutex_lock(&rate_ctrl_mutex);
65 list_for_each_entry(alg, &rate_ctrl_algs, list) {
66 if (alg->ops == ops) {
67 list_del(&alg->list);
68 kfree(alg);
69 break;
70 }
71 }
72 mutex_unlock(&rate_ctrl_mutex);
73}
74EXPORT_SYMBOL(ieee80211_rate_control_unregister);
75
76static struct rate_control_ops *
77ieee80211_try_rate_control_ops_get(const char *name)
78{
79 struct rate_control_alg *alg;
80 struct rate_control_ops *ops = NULL;
81
82 if (!name)
83 return NULL;
84
85 mutex_lock(&rate_ctrl_mutex);
86 list_for_each_entry(alg, &rate_ctrl_algs, list) {
87 if (!strcmp(alg->ops->name, name))
88 if (try_module_get(alg->ops->module)) {
89 ops = alg->ops;
90 break;
91 }
92 }
93 mutex_unlock(&rate_ctrl_mutex);
94 return ops;
95}
96
97/* Get the rate control algorithm. */
98static struct rate_control_ops *
99ieee80211_rate_control_ops_get(const char *name)
100{
101 struct rate_control_ops *ops;
102 const char *alg_name;
103
104 if (!name)
105 alg_name = ieee80211_default_rc_algo;
106 else
107 alg_name = name;
108
109 ops = ieee80211_try_rate_control_ops_get(alg_name);
110 if (!ops) {
111 request_module("rc80211_%s", alg_name);
112 ops = ieee80211_try_rate_control_ops_get(alg_name);
113 }
114 if (!ops && name)
115 /* try default if specific alg requested but not found */
116 ops = ieee80211_try_rate_control_ops_get(ieee80211_default_rc_algo);
117
118 /* try built-in one if specific alg requested but not found */
119 if (!ops && strlen(CONFIG_MAC80211_RC_DEFAULT))
120 ops = ieee80211_try_rate_control_ops_get(CONFIG_MAC80211_RC_DEFAULT);
121
122 return ops;
123}
124
125static void ieee80211_rate_control_ops_put(struct rate_control_ops *ops)
126{
127 module_put(ops->module);
128}
129
130struct rate_control_ref *rate_control_alloc(const char *name,
131 struct ieee80211_local *local)
132{
133 struct rate_control_ref *ref;
134
135 ref = kmalloc(sizeof(struct rate_control_ref), GFP_KERNEL);
136 if (!ref)
137 goto fail_ref;
138 kref_init(&ref->kref);
139 ref->ops = ieee80211_rate_control_ops_get(name);
140 if (!ref->ops)
141 goto fail_ops;
142 ref->priv = ref->ops->alloc(local);
143 if (!ref->priv)
144 goto fail_priv;
145 return ref;
146
147fail_priv:
148 ieee80211_rate_control_ops_put(ref->ops);
149fail_ops:
150 kfree(ref);
151fail_ref:
152 return NULL;
153}
154
155static void rate_control_release(struct kref *kref)
156{
157 struct rate_control_ref *ctrl_ref;
158
159 ctrl_ref = container_of(kref, struct rate_control_ref, kref);
160 ctrl_ref->ops->free(ctrl_ref->priv);
161 ieee80211_rate_control_ops_put(ctrl_ref->ops);
162 kfree(ctrl_ref);
163}
164
165void rate_control_get_rate(struct net_device *dev,
166 struct ieee80211_supported_band *sband,
167 struct sk_buff *skb,
168 struct rate_selection *sel)
169{
170 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
171 struct rate_control_ref *ref = local->rate_ctrl;
172 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
173 struct sta_info *sta;
174 int i;
175
176 rcu_read_lock();
177 sta = sta_info_get(local, hdr->addr1);
178
179 memset(sel, 0, sizeof(struct rate_selection));
180
181 ref->ops->get_rate(ref->priv, dev, sband, skb, sel);
182
183 /* Select a non-ERP backup rate. */
184 if (!sel->nonerp) {
185 for (i = 0; i < sband->n_bitrates; i++) {
186 struct ieee80211_rate *rate = &sband->bitrates[i];
187 if (sel->rate->bitrate < rate->bitrate)
188 break;
189
190 if (rate_supported(sta, sband->band, i) &&
191 !(rate->flags & IEEE80211_RATE_ERP_G))
192 sel->nonerp = rate;
193 }
194 }
195
196 rcu_read_unlock();
197}
198
199struct rate_control_ref *rate_control_get(struct rate_control_ref *ref)
200{
201 kref_get(&ref->kref);
202 return ref;
203}
204
205void rate_control_put(struct rate_control_ref *ref)
206{
207 kref_put(&ref->kref, rate_control_release);
208}
209
210int ieee80211_init_rate_ctrl_alg(struct ieee80211_local *local,
211 const char *name)
212{
213 struct rate_control_ref *ref, *old;
214
215 ASSERT_RTNL();
216 if (local->open_count || netif_running(local->mdev))
217 return -EBUSY;
218
219 ref = rate_control_alloc(name, local);
220 if (!ref) {
221 printk(KERN_WARNING "%s: Failed to select rate control "
222 "algorithm\n", wiphy_name(local->hw.wiphy));
223 return -ENOENT;
224 }
225
226 old = local->rate_ctrl;
227 local->rate_ctrl = ref;
228 if (old) {
229 rate_control_put(old);
230 sta_info_flush(local, NULL);
231 }
232
233 printk(KERN_DEBUG "%s: Selected rate control "
234 "algorithm '%s'\n", wiphy_name(local->hw.wiphy),
235 ref->ops->name);
236
237
238 return 0;
239}
240
241void rate_control_deinitialize(struct ieee80211_local *local)
242{
243 struct rate_control_ref *ref;
244
245 ref = local->rate_ctrl;
246 local->rate_ctrl = NULL;
247 rate_control_put(ref);
248}
249
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-13 21:51:07 -0500