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95ea3627 | 1 | /* |
811aa9ca | 2 | Copyright (C) 2004 - 2008 rt2x00 SourceForge Project |
95ea3627 ID |
3 | <http://rt2x00.serialmonkey.com> |
4 | ||
5 | This program is free software; you can redistribute it and/or modify | |
6 | it under the terms of the GNU General Public License as published by | |
7 | the Free Software Foundation; either version 2 of the License, or | |
8 | (at your option) any later version. | |
9 | ||
10 | This program is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | GNU General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License | |
16 | along with this program; if not, write to the | |
17 | Free Software Foundation, Inc., | |
18 | 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
19 | */ | |
20 | ||
21 | /* | |
22 | Module: rt2x00mac | |
23 | Abstract: rt2x00 generic mac80211 routines. | |
24 | */ | |
25 | ||
95ea3627 ID |
26 | #include <linux/kernel.h> |
27 | #include <linux/module.h> | |
28 | ||
29 | #include "rt2x00.h" | |
30 | #include "rt2x00lib.h" | |
31 | ||
32 | static int rt2x00mac_tx_rts_cts(struct rt2x00_dev *rt2x00dev, | |
181d6902 | 33 | struct data_queue *queue, |
95ea3627 ID |
34 | struct sk_buff *frag_skb, |
35 | struct ieee80211_tx_control *control) | |
36 | { | |
baf26a7e | 37 | struct skb_frame_desc *skbdesc; |
95ea3627 ID |
38 | struct sk_buff *skb; |
39 | int size; | |
40 | ||
41 | if (control->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) | |
42 | size = sizeof(struct ieee80211_cts); | |
43 | else | |
44 | size = sizeof(struct ieee80211_rts); | |
45 | ||
46 | skb = dev_alloc_skb(size + rt2x00dev->hw->extra_tx_headroom); | |
47 | if (!skb) { | |
48 | WARNING(rt2x00dev, "Failed to create RTS/CTS frame.\n"); | |
49 | return NETDEV_TX_BUSY; | |
50 | } | |
51 | ||
52 | skb_reserve(skb, rt2x00dev->hw->extra_tx_headroom); | |
53 | skb_put(skb, size); | |
54 | ||
55 | if (control->flags & IEEE80211_TXCTL_USE_CTS_PROTECT) | |
6bb40dd1 | 56 | ieee80211_ctstoself_get(rt2x00dev->hw, control->vif, |
95ea3627 ID |
57 | frag_skb->data, frag_skb->len, control, |
58 | (struct ieee80211_cts *)(skb->data)); | |
59 | else | |
6bb40dd1 | 60 | ieee80211_rts_get(rt2x00dev->hw, control->vif, |
95ea3627 ID |
61 | frag_skb->data, frag_skb->len, control, |
62 | (struct ieee80211_rts *)(skb->data)); | |
63 | ||
baf26a7e ID |
64 | /* |
65 | * Initialize skb descriptor | |
66 | */ | |
67 | skbdesc = get_skb_frame_desc(skb); | |
68 | memset(skbdesc, 0, sizeof(*skbdesc)); | |
69 | skbdesc->flags |= FRAME_DESC_DRIVER_GENERATED; | |
70 | ||
181d6902 | 71 | if (rt2x00dev->ops->lib->write_tx_data(rt2x00dev, queue, skb, control)) { |
95ea3627 ID |
72 | WARNING(rt2x00dev, "Failed to send RTS/CTS frame.\n"); |
73 | return NETDEV_TX_BUSY; | |
74 | } | |
75 | ||
76 | return NETDEV_TX_OK; | |
77 | } | |
78 | ||
79 | int rt2x00mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb, | |
80 | struct ieee80211_tx_control *control) | |
81 | { | |
82 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
83 | struct ieee80211_hdr *ieee80211hdr = (struct ieee80211_hdr *)skb->data; | |
181d6902 | 84 | struct data_queue *queue; |
baf26a7e | 85 | struct skb_frame_desc *skbdesc; |
95ea3627 ID |
86 | u16 frame_control; |
87 | ||
066cb637 ID |
88 | /* |
89 | * Mac80211 might be calling this function while we are trying | |
90 | * to remove the device or perhaps suspending it. | |
91 | * Note that we can only stop the TX queues inside the TX path | |
92 | * due to possible race conditions in mac80211. | |
93 | */ | |
94 | if (!test_bit(DEVICE_PRESENT, &rt2x00dev->flags)) { | |
95 | ieee80211_stop_queues(hw); | |
1230cb83 | 96 | return NETDEV_TX_OK; |
066cb637 ID |
97 | } |
98 | ||
95ea3627 | 99 | /* |
181d6902 | 100 | * Determine which queue to put packet on. |
95ea3627 | 101 | */ |
e4030a2f ID |
102 | if (control->flags & IEEE80211_TXCTL_SEND_AFTER_DTIM && |
103 | test_bit(DRIVER_REQUIRE_ATIM_QUEUE, &rt2x00dev->flags)) | |
104 | queue = rt2x00queue_get_queue(rt2x00dev, RT2X00_BCN_QUEUE_ATIM); | |
105 | else | |
106 | queue = rt2x00queue_get_queue(rt2x00dev, control->queue); | |
181d6902 | 107 | if (unlikely(!queue)) { |
95ea3627 ID |
108 | ERROR(rt2x00dev, |
109 | "Attempt to send packet over invalid queue %d.\n" | |
110 | "Please file bug report to %s.\n", | |
111 | control->queue, DRV_PROJECT); | |
112 | dev_kfree_skb_any(skb); | |
113 | return NETDEV_TX_OK; | |
114 | } | |
115 | ||
116 | /* | |
117 | * If CTS/RTS is required. and this frame is not CTS or RTS, | |
118 | * create and queue that frame first. But make sure we have | |
119 | * at least enough entries available to send this CTS/RTS | |
120 | * frame as well as the data frame. | |
2d9ccf84 ID |
121 | * Note that when the driver has set the set_rts_threshold() |
122 | * callback function it doesn't need software generation of | |
123 | * neither RTS or CTS-to-self frames and handles everything | |
124 | * inside the hardware. | |
95ea3627 ID |
125 | */ |
126 | frame_control = le16_to_cpu(ieee80211hdr->frame_control); | |
127 | if (!is_rts_frame(frame_control) && !is_cts_frame(frame_control) && | |
128 | (control->flags & (IEEE80211_TXCTL_USE_RTS_CTS | | |
2d9ccf84 ID |
129 | IEEE80211_TXCTL_USE_CTS_PROTECT)) && |
130 | !rt2x00dev->ops->hw->set_rts_threshold) { | |
181d6902 | 131 | if (rt2x00queue_available(queue) <= 1) { |
1230cb83 | 132 | ieee80211_stop_queue(rt2x00dev->hw, control->queue); |
95ea3627 | 133 | return NETDEV_TX_BUSY; |
1230cb83 | 134 | } |
95ea3627 | 135 | |
181d6902 | 136 | if (rt2x00mac_tx_rts_cts(rt2x00dev, queue, skb, control)) { |
1230cb83 | 137 | ieee80211_stop_queue(rt2x00dev->hw, control->queue); |
95ea3627 | 138 | return NETDEV_TX_BUSY; |
1230cb83 | 139 | } |
95ea3627 ID |
140 | } |
141 | ||
baf26a7e ID |
142 | /* |
143 | * Initialize skb descriptor | |
144 | */ | |
145 | skbdesc = get_skb_frame_desc(skb); | |
146 | memset(skbdesc, 0, sizeof(*skbdesc)); | |
147 | ||
181d6902 | 148 | if (rt2x00dev->ops->lib->write_tx_data(rt2x00dev, queue, skb, control)) { |
1230cb83 | 149 | ieee80211_stop_queue(rt2x00dev->hw, control->queue); |
95ea3627 | 150 | return NETDEV_TX_BUSY; |
1230cb83 ID |
151 | } |
152 | ||
181d6902 | 153 | if (rt2x00queue_full(queue)) |
1230cb83 | 154 | ieee80211_stop_queue(rt2x00dev->hw, control->queue); |
95ea3627 ID |
155 | |
156 | if (rt2x00dev->ops->lib->kick_tx_queue) | |
157 | rt2x00dev->ops->lib->kick_tx_queue(rt2x00dev, control->queue); | |
158 | ||
159 | return NETDEV_TX_OK; | |
160 | } | |
161 | EXPORT_SYMBOL_GPL(rt2x00mac_tx); | |
162 | ||
163 | int rt2x00mac_start(struct ieee80211_hw *hw) | |
164 | { | |
165 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
95ea3627 | 166 | |
e37ea213 | 167 | if (!test_bit(DEVICE_PRESENT, &rt2x00dev->flags)) |
95ea3627 ID |
168 | return 0; |
169 | ||
e37ea213 | 170 | return rt2x00lib_start(rt2x00dev); |
95ea3627 ID |
171 | } |
172 | EXPORT_SYMBOL_GPL(rt2x00mac_start); | |
173 | ||
174 | void rt2x00mac_stop(struct ieee80211_hw *hw) | |
175 | { | |
176 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
177 | ||
066cb637 ID |
178 | if (!test_bit(DEVICE_PRESENT, &rt2x00dev->flags)) |
179 | return; | |
180 | ||
e37ea213 | 181 | rt2x00lib_stop(rt2x00dev); |
95ea3627 ID |
182 | } |
183 | EXPORT_SYMBOL_GPL(rt2x00mac_stop); | |
184 | ||
185 | int rt2x00mac_add_interface(struct ieee80211_hw *hw, | |
186 | struct ieee80211_if_init_conf *conf) | |
187 | { | |
188 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
6bb40dd1 ID |
189 | struct rt2x00_intf *intf = vif_to_intf(conf->vif); |
190 | struct data_queue *queue = | |
5957da4c | 191 | rt2x00queue_get_queue(rt2x00dev, RT2X00_BCN_QUEUE_BEACON); |
6bb40dd1 ID |
192 | struct queue_entry *entry = NULL; |
193 | unsigned int i; | |
95ea3627 ID |
194 | |
195 | /* | |
6bb40dd1 ID |
196 | * Don't allow interfaces to be added |
197 | * the device has disappeared. | |
95ea3627 | 198 | */ |
066cb637 | 199 | if (!test_bit(DEVICE_PRESENT, &rt2x00dev->flags) || |
6bb40dd1 ID |
200 | !test_bit(DEVICE_STARTED, &rt2x00dev->flags)) |
201 | return -ENODEV; | |
202 | ||
203 | /* | |
62e70cf8 ID |
204 | * We don't support mixed combinations of sta and ap virtual |
205 | * interfaces. We can only add this interface when the rival | |
206 | * interface count is 0. | |
6bb40dd1 | 207 | */ |
62e70cf8 ID |
208 | if ((conf->type == IEEE80211_IF_TYPE_AP && rt2x00dev->intf_sta_count) || |
209 | (conf->type != IEEE80211_IF_TYPE_AP && rt2x00dev->intf_ap_count)) | |
6bb40dd1 ID |
210 | return -ENOBUFS; |
211 | ||
212 | /* | |
213 | * Check if we exceeded the maximum amount of supported interfaces. | |
214 | */ | |
215 | if ((conf->type == IEEE80211_IF_TYPE_AP && | |
216 | rt2x00dev->intf_ap_count >= rt2x00dev->ops->max_ap_intf) || | |
217 | (conf->type != IEEE80211_IF_TYPE_AP && | |
218 | rt2x00dev->intf_sta_count >= rt2x00dev->ops->max_sta_intf)) | |
219 | return -ENOBUFS; | |
220 | ||
221 | /* | |
222 | * Loop through all beacon queues to find a free | |
223 | * entry. Since there are as much beacon entries | |
224 | * as the maximum interfaces, this search shouldn't | |
225 | * fail. | |
226 | */ | |
227 | for (i = 0; i < queue->limit; i++) { | |
228 | entry = &queue->entries[i]; | |
229 | if (!__test_and_set_bit(ENTRY_BCN_ASSIGNED, &entry->flags)) | |
230 | break; | |
231 | } | |
232 | ||
233 | if (unlikely(i == queue->limit)) | |
95ea3627 ID |
234 | return -ENOBUFS; |
235 | ||
6bb40dd1 ID |
236 | /* |
237 | * We are now absolutely sure the interface can be created, | |
238 | * increase interface count and start initialization. | |
239 | */ | |
240 | ||
241 | if (conf->type == IEEE80211_IF_TYPE_AP) | |
242 | rt2x00dev->intf_ap_count++; | |
243 | else | |
244 | rt2x00dev->intf_sta_count++; | |
245 | ||
246 | spin_lock_init(&intf->lock); | |
247 | intf->beacon = entry; | |
248 | ||
4150c572 JB |
249 | if (conf->type == IEEE80211_IF_TYPE_AP) |
250 | memcpy(&intf->bssid, conf->mac_addr, ETH_ALEN); | |
251 | memcpy(&intf->mac, conf->mac_addr, ETH_ALEN); | |
95ea3627 ID |
252 | |
253 | /* | |
95ea3627 | 254 | * The MAC adddress must be configured after the device |
4150c572 JB |
255 | * has been initialized. Otherwise the device can reset |
256 | * the MAC registers. | |
95ea3627 | 257 | */ |
6bb40dd1 | 258 | rt2x00lib_config_intf(rt2x00dev, intf, conf->type, intf->mac, NULL); |
95ea3627 | 259 | |
e0b005fa ID |
260 | /* |
261 | * Some filters depend on the current working mode. We can force | |
262 | * an update during the next configure_filter() run by mac80211 by | |
263 | * resetting the current packet_filter state. | |
264 | */ | |
265 | rt2x00dev->packet_filter = 0; | |
266 | ||
95ea3627 ID |
267 | return 0; |
268 | } | |
269 | EXPORT_SYMBOL_GPL(rt2x00mac_add_interface); | |
270 | ||
271 | void rt2x00mac_remove_interface(struct ieee80211_hw *hw, | |
272 | struct ieee80211_if_init_conf *conf) | |
273 | { | |
274 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
6bb40dd1 | 275 | struct rt2x00_intf *intf = vif_to_intf(conf->vif); |
95ea3627 ID |
276 | |
277 | /* | |
066cb637 ID |
278 | * Don't allow interfaces to be remove while |
279 | * either the device has disappeared or when | |
280 | * no interface is present. | |
95ea3627 | 281 | */ |
066cb637 | 282 | if (!test_bit(DEVICE_PRESENT, &rt2x00dev->flags) || |
6bb40dd1 ID |
283 | (conf->type == IEEE80211_IF_TYPE_AP && !rt2x00dev->intf_ap_count) || |
284 | (conf->type != IEEE80211_IF_TYPE_AP && !rt2x00dev->intf_sta_count)) | |
95ea3627 ID |
285 | return; |
286 | ||
6bb40dd1 ID |
287 | if (conf->type == IEEE80211_IF_TYPE_AP) |
288 | rt2x00dev->intf_ap_count--; | |
289 | else | |
290 | rt2x00dev->intf_sta_count--; | |
291 | ||
292 | /* | |
293 | * Release beacon entry so it is available for | |
294 | * new interfaces again. | |
295 | */ | |
296 | __clear_bit(ENTRY_BCN_ASSIGNED, &intf->beacon->flags); | |
95ea3627 ID |
297 | |
298 | /* | |
299 | * Make sure the bssid and mac address registers | |
300 | * are cleared to prevent false ACKing of frames. | |
301 | */ | |
6bb40dd1 ID |
302 | rt2x00lib_config_intf(rt2x00dev, intf, |
303 | IEEE80211_IF_TYPE_INVALID, NULL, NULL); | |
95ea3627 ID |
304 | } |
305 | EXPORT_SYMBOL_GPL(rt2x00mac_remove_interface); | |
306 | ||
307 | int rt2x00mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf) | |
308 | { | |
309 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
310 | ||
311 | /* | |
066cb637 ID |
312 | * Mac80211 might be calling this function while we are trying |
313 | * to remove the device or perhaps suspending it. | |
95ea3627 | 314 | */ |
066cb637 | 315 | if (!test_bit(DEVICE_PRESENT, &rt2x00dev->flags)) |
95ea3627 ID |
316 | return 0; |
317 | ||
318 | /* | |
319 | * Check if we need to disable the radio, | |
320 | * if this is not the case, at least the RX must be disabled. | |
321 | */ | |
322 | if (test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags)) { | |
323 | if (!conf->radio_enabled) | |
324 | rt2x00lib_disable_radio(rt2x00dev); | |
325 | else | |
5cbf830e | 326 | rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_OFF); |
95ea3627 ID |
327 | } |
328 | ||
066cb637 | 329 | rt2x00lib_config(rt2x00dev, conf, 0); |
95ea3627 | 330 | |
95ea3627 ID |
331 | /* |
332 | * Reenable RX only if the radio should be on. | |
333 | */ | |
334 | if (test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags)) | |
5cbf830e | 335 | rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_ON); |
95ea3627 ID |
336 | else if (conf->radio_enabled) |
337 | return rt2x00lib_enable_radio(rt2x00dev); | |
338 | ||
339 | return 0; | |
340 | } | |
341 | EXPORT_SYMBOL_GPL(rt2x00mac_config); | |
342 | ||
32bfd35d JB |
343 | int rt2x00mac_config_interface(struct ieee80211_hw *hw, |
344 | struct ieee80211_vif *vif, | |
95ea3627 ID |
345 | struct ieee80211_if_conf *conf) |
346 | { | |
347 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
6bb40dd1 | 348 | struct rt2x00_intf *intf = vif_to_intf(vif); |
95ea3627 ID |
349 | int status; |
350 | ||
351 | /* | |
066cb637 ID |
352 | * Mac80211 might be calling this function while we are trying |
353 | * to remove the device or perhaps suspending it. | |
95ea3627 | 354 | */ |
066cb637 | 355 | if (!test_bit(DEVICE_PRESENT, &rt2x00dev->flags)) |
95ea3627 ID |
356 | return 0; |
357 | ||
6bb40dd1 | 358 | spin_lock(&intf->lock); |
95ea3627 ID |
359 | |
360 | /* | |
361 | * If the interface does not work in master mode, | |
362 | * then the bssid value in the interface structure | |
363 | * should now be set. | |
364 | */ | |
365 | if (conf->type != IEEE80211_IF_TYPE_AP) | |
366 | memcpy(&intf->bssid, conf->bssid, ETH_ALEN); | |
6bb40dd1 ID |
367 | |
368 | spin_unlock(&intf->lock); | |
95ea3627 | 369 | |
e44df929 ID |
370 | /* |
371 | * Call rt2x00_config_intf() outside of the spinlock context since | |
372 | * the call will sleep for USB drivers. By using the ieee80211_if_conf | |
373 | * values as arguments we make keep access to rt2x00_intf thread safe | |
374 | * even without the lock. | |
375 | */ | |
376 | rt2x00lib_config_intf(rt2x00dev, intf, conf->type, NULL, conf->bssid); | |
377 | ||
95ea3627 ID |
378 | /* |
379 | * We only need to initialize the beacon when master mode is enabled. | |
380 | */ | |
381 | if (conf->type != IEEE80211_IF_TYPE_AP || !conf->beacon) | |
382 | return 0; | |
383 | ||
384 | status = rt2x00dev->ops->hw->beacon_update(rt2x00dev->hw, | |
385 | conf->beacon, | |
386 | conf->beacon_control); | |
387 | if (status) | |
388 | dev_kfree_skb(conf->beacon); | |
389 | ||
390 | return status; | |
391 | } | |
392 | EXPORT_SYMBOL_GPL(rt2x00mac_config_interface); | |
393 | ||
3a643d24 ID |
394 | void rt2x00mac_configure_filter(struct ieee80211_hw *hw, |
395 | unsigned int changed_flags, | |
396 | unsigned int *total_flags, | |
397 | int mc_count, struct dev_addr_list *mc_list) | |
398 | { | |
399 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
400 | ||
401 | /* | |
402 | * Mask off any flags we are going to ignore | |
403 | * from the total_flags field. | |
404 | */ | |
405 | *total_flags &= | |
406 | FIF_ALLMULTI | | |
407 | FIF_FCSFAIL | | |
408 | FIF_PLCPFAIL | | |
409 | FIF_CONTROL | | |
410 | FIF_OTHER_BSS | | |
411 | FIF_PROMISC_IN_BSS; | |
412 | ||
413 | /* | |
414 | * Apply some rules to the filters: | |
415 | * - Some filters imply different filters to be set. | |
416 | * - Some things we can't filter out at all. | |
417 | * - Multicast filter seems to kill broadcast traffic so never use it. | |
418 | */ | |
419 | *total_flags |= FIF_ALLMULTI; | |
420 | if (*total_flags & FIF_OTHER_BSS || | |
421 | *total_flags & FIF_PROMISC_IN_BSS) | |
422 | *total_flags |= FIF_PROMISC_IN_BSS | FIF_OTHER_BSS; | |
423 | ||
424 | /* | |
425 | * Check if there is any work left for us. | |
426 | */ | |
427 | if (rt2x00dev->packet_filter == *total_flags) | |
428 | return; | |
429 | rt2x00dev->packet_filter = *total_flags; | |
430 | ||
431 | if (!test_bit(DRIVER_REQUIRE_SCHEDULED, &rt2x00dev->flags)) | |
3a643d24 | 432 | rt2x00dev->ops->lib->config_filter(rt2x00dev, *total_flags); |
bc5213f4 ID |
433 | else |
434 | queue_work(rt2x00dev->hw->workqueue, &rt2x00dev->filter_work); | |
3a643d24 ID |
435 | } |
436 | EXPORT_SYMBOL_GPL(rt2x00mac_configure_filter); | |
437 | ||
95ea3627 ID |
438 | int rt2x00mac_get_stats(struct ieee80211_hw *hw, |
439 | struct ieee80211_low_level_stats *stats) | |
440 | { | |
441 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
442 | ||
443 | /* | |
444 | * The dot11ACKFailureCount, dot11RTSFailureCount and | |
445 | * dot11RTSSuccessCount are updated in interrupt time. | |
446 | * dot11FCSErrorCount is updated in the link tuner. | |
447 | */ | |
448 | memcpy(stats, &rt2x00dev->low_level_stats, sizeof(*stats)); | |
449 | ||
450 | return 0; | |
451 | } | |
452 | EXPORT_SYMBOL_GPL(rt2x00mac_get_stats); | |
453 | ||
454 | int rt2x00mac_get_tx_stats(struct ieee80211_hw *hw, | |
455 | struct ieee80211_tx_queue_stats *stats) | |
456 | { | |
457 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
458 | unsigned int i; | |
459 | ||
181d6902 ID |
460 | for (i = 0; i < hw->queues; i++) { |
461 | stats->data[i].len = rt2x00dev->tx[i].length; | |
462 | stats->data[i].limit = rt2x00dev->tx[i].limit; | |
463 | stats->data[i].count = rt2x00dev->tx[i].count; | |
464 | } | |
95ea3627 ID |
465 | |
466 | return 0; | |
467 | } | |
468 | EXPORT_SYMBOL_GPL(rt2x00mac_get_tx_stats); | |
469 | ||
471b3efd JB |
470 | void rt2x00mac_bss_info_changed(struct ieee80211_hw *hw, |
471 | struct ieee80211_vif *vif, | |
472 | struct ieee80211_bss_conf *bss_conf, | |
473 | u32 changes) | |
5c58ee51 ID |
474 | { |
475 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
6bb40dd1 | 476 | struct rt2x00_intf *intf = vif_to_intf(vif); |
3a643d24 | 477 | unsigned int delayed = 0; |
5c58ee51 ID |
478 | |
479 | /* | |
6bb40dd1 ID |
480 | * When the association status has changed we must reset the link |
481 | * tuner counter. This is because some drivers determine if they | |
482 | * should perform link tuning based on the number of seconds | |
483 | * while associated or not associated. | |
5c58ee51 | 484 | */ |
6bb40dd1 ID |
485 | if (changes & BSS_CHANGED_ASSOC) { |
486 | rt2x00dev->link.count = 0; | |
5c58ee51 | 487 | |
6bb40dd1 ID |
488 | if (bss_conf->assoc) |
489 | rt2x00dev->intf_associated++; | |
490 | else | |
491 | rt2x00dev->intf_associated--; | |
a2e1d52a ID |
492 | |
493 | if (!test_bit(DRIVER_REQUIRE_SCHEDULED, &rt2x00dev->flags)) | |
494 | rt2x00leds_led_assoc(rt2x00dev, | |
495 | !!rt2x00dev->intf_associated); | |
496 | else | |
497 | delayed |= DELAYED_LED_ASSOC; | |
6bb40dd1 | 498 | } |
5c58ee51 | 499 | |
6bb40dd1 | 500 | /* |
72810379 ID |
501 | * When the erp information has changed, we should perform |
502 | * additional configuration steps. For all other changes we are done. | |
6bb40dd1 | 503 | */ |
3a643d24 ID |
504 | if (changes & BSS_CHANGED_ERP_PREAMBLE) { |
505 | if (!test_bit(DRIVER_REQUIRE_SCHEDULED, &rt2x00dev->flags)) | |
506 | rt2x00lib_config_erp(rt2x00dev, intf, bss_conf); | |
507 | else | |
508 | delayed |= DELAYED_CONFIG_ERP; | |
509 | } | |
5c58ee51 | 510 | |
72810379 ID |
511 | spin_lock(&intf->lock); |
512 | memcpy(&intf->conf, bss_conf, sizeof(*bss_conf)); | |
3a643d24 ID |
513 | if (delayed) { |
514 | intf->delayed_flags |= delayed; | |
515 | queue_work(rt2x00dev->hw->workqueue, &rt2x00dev->intf_work); | |
516 | } | |
72810379 | 517 | spin_unlock(&intf->lock); |
5c58ee51 | 518 | } |
471b3efd | 519 | EXPORT_SYMBOL_GPL(rt2x00mac_bss_info_changed); |
5c58ee51 | 520 | |
181d6902 | 521 | int rt2x00mac_conf_tx(struct ieee80211_hw *hw, int queue_idx, |
95ea3627 ID |
522 | const struct ieee80211_tx_queue_params *params) |
523 | { | |
524 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
181d6902 | 525 | struct data_queue *queue; |
95ea3627 | 526 | |
181d6902 ID |
527 | queue = rt2x00queue_get_queue(rt2x00dev, queue_idx); |
528 | if (unlikely(!queue)) | |
95ea3627 ID |
529 | return -EINVAL; |
530 | ||
531 | /* | |
532 | * The passed variables are stored as real value ((2^n)-1). | |
533 | * Ralink registers require to know the bit number 'n'. | |
534 | */ | |
3b3618ad | 535 | if (params->cw_min > 0) |
181d6902 | 536 | queue->cw_min = fls(params->cw_min); |
95ea3627 | 537 | else |
181d6902 | 538 | queue->cw_min = 5; /* cw_min: 2^5 = 32. */ |
95ea3627 | 539 | |
3b3618ad | 540 | if (params->cw_max > 0) |
181d6902 | 541 | queue->cw_max = fls(params->cw_max); |
95ea3627 | 542 | else |
181d6902 | 543 | queue->cw_max = 10; /* cw_min: 2^10 = 1024. */ |
95ea3627 | 544 | |
3b3618ad | 545 | if (params->aifs >= 0) |
181d6902 | 546 | queue->aifs = params->aifs; |
95ea3627 | 547 | else |
181d6902 | 548 | queue->aifs = 2; |
95ea3627 ID |
549 | |
550 | INFO(rt2x00dev, | |
181d6902 ID |
551 | "Configured TX queue %d - CWmin: %d, CWmax: %d, Aifs: %d.\n", |
552 | queue_idx, queue->cw_min, queue->cw_max, queue->aifs); | |
95ea3627 ID |
553 | |
554 | return 0; | |
555 | } | |
556 | EXPORT_SYMBOL_GPL(rt2x00mac_conf_tx); |