1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | /* |
3 | * Copyright 2006, Johannes Berg <johannes@sipsolutions.net> |
4 | */ |
5 | |
6 | /* just for IFNAMSIZ */ |
7 | #include <linux/if.h> |
8 | #include <linux/slab.h> |
9 | #include <linux/export.h> |
10 | #include "led.h" |
11 | |
12 | void ieee80211_led_assoc(struct ieee80211_local *local, bool associated) |
13 | { |
14 | if (!atomic_read(v: &local->assoc_led_active)) |
15 | return; |
16 | if (associated) |
17 | led_trigger_event(trigger: &local->assoc_led, event: LED_FULL); |
18 | else |
19 | led_trigger_event(trigger: &local->assoc_led, event: LED_OFF); |
20 | } |
21 | |
22 | void ieee80211_led_radio(struct ieee80211_local *local, bool enabled) |
23 | { |
24 | if (!atomic_read(v: &local->radio_led_active)) |
25 | return; |
26 | if (enabled) |
27 | led_trigger_event(trigger: &local->radio_led, event: LED_FULL); |
28 | else |
29 | led_trigger_event(trigger: &local->radio_led, event: LED_OFF); |
30 | } |
31 | |
32 | void ieee80211_alloc_led_names(struct ieee80211_local *local) |
33 | { |
34 | local->rx_led.name = kasprintf(GFP_KERNEL, fmt: "%srx" , |
35 | wiphy_name(wiphy: local->hw.wiphy)); |
36 | local->tx_led.name = kasprintf(GFP_KERNEL, fmt: "%stx" , |
37 | wiphy_name(wiphy: local->hw.wiphy)); |
38 | local->assoc_led.name = kasprintf(GFP_KERNEL, fmt: "%sassoc" , |
39 | wiphy_name(wiphy: local->hw.wiphy)); |
40 | local->radio_led.name = kasprintf(GFP_KERNEL, fmt: "%sradio" , |
41 | wiphy_name(wiphy: local->hw.wiphy)); |
42 | } |
43 | |
44 | void ieee80211_free_led_names(struct ieee80211_local *local) |
45 | { |
46 | kfree(objp: local->rx_led.name); |
47 | kfree(objp: local->tx_led.name); |
48 | kfree(objp: local->assoc_led.name); |
49 | kfree(objp: local->radio_led.name); |
50 | } |
51 | |
52 | static int ieee80211_tx_led_activate(struct led_classdev *led_cdev) |
53 | { |
54 | struct ieee80211_local *local = container_of(led_cdev->trigger, |
55 | struct ieee80211_local, |
56 | tx_led); |
57 | |
58 | atomic_inc(v: &local->tx_led_active); |
59 | |
60 | return 0; |
61 | } |
62 | |
63 | static void ieee80211_tx_led_deactivate(struct led_classdev *led_cdev) |
64 | { |
65 | struct ieee80211_local *local = container_of(led_cdev->trigger, |
66 | struct ieee80211_local, |
67 | tx_led); |
68 | |
69 | atomic_dec(v: &local->tx_led_active); |
70 | } |
71 | |
72 | static int ieee80211_rx_led_activate(struct led_classdev *led_cdev) |
73 | { |
74 | struct ieee80211_local *local = container_of(led_cdev->trigger, |
75 | struct ieee80211_local, |
76 | rx_led); |
77 | |
78 | atomic_inc(v: &local->rx_led_active); |
79 | |
80 | return 0; |
81 | } |
82 | |
83 | static void ieee80211_rx_led_deactivate(struct led_classdev *led_cdev) |
84 | { |
85 | struct ieee80211_local *local = container_of(led_cdev->trigger, |
86 | struct ieee80211_local, |
87 | rx_led); |
88 | |
89 | atomic_dec(v: &local->rx_led_active); |
90 | } |
91 | |
92 | static int ieee80211_assoc_led_activate(struct led_classdev *led_cdev) |
93 | { |
94 | struct ieee80211_local *local = container_of(led_cdev->trigger, |
95 | struct ieee80211_local, |
96 | assoc_led); |
97 | |
98 | atomic_inc(v: &local->assoc_led_active); |
99 | |
100 | return 0; |
101 | } |
102 | |
103 | static void ieee80211_assoc_led_deactivate(struct led_classdev *led_cdev) |
104 | { |
105 | struct ieee80211_local *local = container_of(led_cdev->trigger, |
106 | struct ieee80211_local, |
107 | assoc_led); |
108 | |
109 | atomic_dec(v: &local->assoc_led_active); |
110 | } |
111 | |
112 | static int ieee80211_radio_led_activate(struct led_classdev *led_cdev) |
113 | { |
114 | struct ieee80211_local *local = container_of(led_cdev->trigger, |
115 | struct ieee80211_local, |
116 | radio_led); |
117 | |
118 | atomic_inc(v: &local->radio_led_active); |
119 | |
120 | return 0; |
121 | } |
122 | |
123 | static void ieee80211_radio_led_deactivate(struct led_classdev *led_cdev) |
124 | { |
125 | struct ieee80211_local *local = container_of(led_cdev->trigger, |
126 | struct ieee80211_local, |
127 | radio_led); |
128 | |
129 | atomic_dec(v: &local->radio_led_active); |
130 | } |
131 | |
132 | static int ieee80211_tpt_led_activate(struct led_classdev *led_cdev) |
133 | { |
134 | struct ieee80211_local *local = container_of(led_cdev->trigger, |
135 | struct ieee80211_local, |
136 | tpt_led); |
137 | |
138 | atomic_inc(v: &local->tpt_led_active); |
139 | |
140 | return 0; |
141 | } |
142 | |
143 | static void ieee80211_tpt_led_deactivate(struct led_classdev *led_cdev) |
144 | { |
145 | struct ieee80211_local *local = container_of(led_cdev->trigger, |
146 | struct ieee80211_local, |
147 | tpt_led); |
148 | |
149 | atomic_dec(v: &local->tpt_led_active); |
150 | } |
151 | |
152 | void ieee80211_led_init(struct ieee80211_local *local) |
153 | { |
154 | atomic_set(v: &local->rx_led_active, i: 0); |
155 | local->rx_led.activate = ieee80211_rx_led_activate; |
156 | local->rx_led.deactivate = ieee80211_rx_led_deactivate; |
157 | if (local->rx_led.name && led_trigger_register(trigger: &local->rx_led)) { |
158 | kfree(objp: local->rx_led.name); |
159 | local->rx_led.name = NULL; |
160 | } |
161 | |
162 | atomic_set(v: &local->tx_led_active, i: 0); |
163 | local->tx_led.activate = ieee80211_tx_led_activate; |
164 | local->tx_led.deactivate = ieee80211_tx_led_deactivate; |
165 | if (local->tx_led.name && led_trigger_register(trigger: &local->tx_led)) { |
166 | kfree(objp: local->tx_led.name); |
167 | local->tx_led.name = NULL; |
168 | } |
169 | |
170 | atomic_set(v: &local->assoc_led_active, i: 0); |
171 | local->assoc_led.activate = ieee80211_assoc_led_activate; |
172 | local->assoc_led.deactivate = ieee80211_assoc_led_deactivate; |
173 | if (local->assoc_led.name && led_trigger_register(trigger: &local->assoc_led)) { |
174 | kfree(objp: local->assoc_led.name); |
175 | local->assoc_led.name = NULL; |
176 | } |
177 | |
178 | atomic_set(v: &local->radio_led_active, i: 0); |
179 | local->radio_led.activate = ieee80211_radio_led_activate; |
180 | local->radio_led.deactivate = ieee80211_radio_led_deactivate; |
181 | if (local->radio_led.name && led_trigger_register(trigger: &local->radio_led)) { |
182 | kfree(objp: local->radio_led.name); |
183 | local->radio_led.name = NULL; |
184 | } |
185 | |
186 | atomic_set(v: &local->tpt_led_active, i: 0); |
187 | if (local->tpt_led_trigger) { |
188 | local->tpt_led.activate = ieee80211_tpt_led_activate; |
189 | local->tpt_led.deactivate = ieee80211_tpt_led_deactivate; |
190 | if (led_trigger_register(trigger: &local->tpt_led)) { |
191 | kfree(objp: local->tpt_led_trigger); |
192 | local->tpt_led_trigger = NULL; |
193 | } |
194 | } |
195 | } |
196 | |
197 | void ieee80211_led_exit(struct ieee80211_local *local) |
198 | { |
199 | if (local->radio_led.name) |
200 | led_trigger_unregister(trigger: &local->radio_led); |
201 | if (local->assoc_led.name) |
202 | led_trigger_unregister(trigger: &local->assoc_led); |
203 | if (local->tx_led.name) |
204 | led_trigger_unregister(trigger: &local->tx_led); |
205 | if (local->rx_led.name) |
206 | led_trigger_unregister(trigger: &local->rx_led); |
207 | |
208 | if (local->tpt_led_trigger) { |
209 | led_trigger_unregister(trigger: &local->tpt_led); |
210 | kfree(objp: local->tpt_led_trigger); |
211 | } |
212 | } |
213 | |
214 | const char *__ieee80211_get_radio_led_name(struct ieee80211_hw *hw) |
215 | { |
216 | struct ieee80211_local *local = hw_to_local(hw); |
217 | |
218 | return local->radio_led.name; |
219 | } |
220 | EXPORT_SYMBOL(__ieee80211_get_radio_led_name); |
221 | |
222 | const char *__ieee80211_get_assoc_led_name(struct ieee80211_hw *hw) |
223 | { |
224 | struct ieee80211_local *local = hw_to_local(hw); |
225 | |
226 | return local->assoc_led.name; |
227 | } |
228 | EXPORT_SYMBOL(__ieee80211_get_assoc_led_name); |
229 | |
230 | const char *__ieee80211_get_tx_led_name(struct ieee80211_hw *hw) |
231 | { |
232 | struct ieee80211_local *local = hw_to_local(hw); |
233 | |
234 | return local->tx_led.name; |
235 | } |
236 | EXPORT_SYMBOL(__ieee80211_get_tx_led_name); |
237 | |
238 | const char *__ieee80211_get_rx_led_name(struct ieee80211_hw *hw) |
239 | { |
240 | struct ieee80211_local *local = hw_to_local(hw); |
241 | |
242 | return local->rx_led.name; |
243 | } |
244 | EXPORT_SYMBOL(__ieee80211_get_rx_led_name); |
245 | |
246 | static unsigned long tpt_trig_traffic(struct ieee80211_local *local, |
247 | struct tpt_led_trigger *tpt_trig) |
248 | { |
249 | unsigned long traffic, delta; |
250 | |
251 | traffic = tpt_trig->tx_bytes + tpt_trig->rx_bytes; |
252 | |
253 | delta = traffic - tpt_trig->prev_traffic; |
254 | tpt_trig->prev_traffic = traffic; |
255 | return DIV_ROUND_UP(delta, 1024 / 8); |
256 | } |
257 | |
258 | static void tpt_trig_timer(struct timer_list *t) |
259 | { |
260 | struct tpt_led_trigger *tpt_trig = from_timer(tpt_trig, t, timer); |
261 | struct ieee80211_local *local = tpt_trig->local; |
262 | unsigned long on, off, tpt; |
263 | int i; |
264 | |
265 | if (!tpt_trig->running) |
266 | return; |
267 | |
268 | mod_timer(timer: &tpt_trig->timer, expires: round_jiffies(j: jiffies + HZ)); |
269 | |
270 | tpt = tpt_trig_traffic(local, tpt_trig); |
271 | |
272 | /* default to just solid on */ |
273 | on = 1; |
274 | off = 0; |
275 | |
276 | for (i = tpt_trig->blink_table_len - 1; i >= 0; i--) { |
277 | if (tpt_trig->blink_table[i].throughput < 0 || |
278 | tpt > tpt_trig->blink_table[i].throughput) { |
279 | off = tpt_trig->blink_table[i].blink_time / 2; |
280 | on = tpt_trig->blink_table[i].blink_time - off; |
281 | break; |
282 | } |
283 | } |
284 | |
285 | led_trigger_blink(trigger: &local->tpt_led, delay_on: on, delay_off: off); |
286 | } |
287 | |
288 | const char * |
289 | __ieee80211_create_tpt_led_trigger(struct ieee80211_hw *hw, |
290 | unsigned int flags, |
291 | const struct ieee80211_tpt_blink *blink_table, |
292 | unsigned int blink_table_len) |
293 | { |
294 | struct ieee80211_local *local = hw_to_local(hw); |
295 | struct tpt_led_trigger *tpt_trig; |
296 | |
297 | if (WARN_ON(local->tpt_led_trigger)) |
298 | return NULL; |
299 | |
300 | tpt_trig = kzalloc(size: sizeof(struct tpt_led_trigger), GFP_KERNEL); |
301 | if (!tpt_trig) |
302 | return NULL; |
303 | |
304 | snprintf(buf: tpt_trig->name, size: sizeof(tpt_trig->name), |
305 | fmt: "%stpt" , wiphy_name(wiphy: local->hw.wiphy)); |
306 | |
307 | local->tpt_led.name = tpt_trig->name; |
308 | |
309 | tpt_trig->blink_table = blink_table; |
310 | tpt_trig->blink_table_len = blink_table_len; |
311 | tpt_trig->want = flags; |
312 | tpt_trig->local = local; |
313 | |
314 | timer_setup(&tpt_trig->timer, tpt_trig_timer, 0); |
315 | |
316 | local->tpt_led_trigger = tpt_trig; |
317 | |
318 | return tpt_trig->name; |
319 | } |
320 | EXPORT_SYMBOL(__ieee80211_create_tpt_led_trigger); |
321 | |
322 | static void ieee80211_start_tpt_led_trig(struct ieee80211_local *local) |
323 | { |
324 | struct tpt_led_trigger *tpt_trig = local->tpt_led_trigger; |
325 | |
326 | if (tpt_trig->running) |
327 | return; |
328 | |
329 | /* reset traffic */ |
330 | tpt_trig_traffic(local, tpt_trig); |
331 | tpt_trig->running = true; |
332 | |
333 | tpt_trig_timer(t: &tpt_trig->timer); |
334 | mod_timer(timer: &tpt_trig->timer, expires: round_jiffies(j: jiffies + HZ)); |
335 | } |
336 | |
337 | static void ieee80211_stop_tpt_led_trig(struct ieee80211_local *local) |
338 | { |
339 | struct tpt_led_trigger *tpt_trig = local->tpt_led_trigger; |
340 | |
341 | if (!tpt_trig->running) |
342 | return; |
343 | |
344 | tpt_trig->running = false; |
345 | del_timer_sync(timer: &tpt_trig->timer); |
346 | |
347 | led_trigger_event(trigger: &local->tpt_led, event: LED_OFF); |
348 | } |
349 | |
350 | void ieee80211_mod_tpt_led_trig(struct ieee80211_local *local, |
351 | unsigned int types_on, unsigned int types_off) |
352 | { |
353 | struct tpt_led_trigger *tpt_trig = local->tpt_led_trigger; |
354 | bool allowed; |
355 | |
356 | WARN_ON(types_on & types_off); |
357 | |
358 | if (!tpt_trig) |
359 | return; |
360 | |
361 | tpt_trig->active &= ~types_off; |
362 | tpt_trig->active |= types_on; |
363 | |
364 | /* |
365 | * Regardless of wanted state, we shouldn't blink when |
366 | * the radio is disabled -- this can happen due to some |
367 | * code ordering issues with __ieee80211_recalc_idle() |
368 | * being called before the radio is started. |
369 | */ |
370 | allowed = tpt_trig->active & IEEE80211_TPT_LEDTRIG_FL_RADIO; |
371 | |
372 | if (!allowed || !(tpt_trig->active & tpt_trig->want)) |
373 | ieee80211_stop_tpt_led_trig(local); |
374 | else |
375 | ieee80211_start_tpt_led_trig(local); |
376 | } |
377 | |