Commit | Line | Data |
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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, |
e039fa4a | 34 | struct sk_buff *frag_skb) |
95ea3627 | 35 | { |
e039fa4a | 36 | struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(frag_skb); |
baf26a7e | 37 | struct skb_frame_desc *skbdesc; |
e039fa4a | 38 | struct ieee80211_tx_info *rts_info; |
95ea3627 ID |
39 | struct sk_buff *skb; |
40 | int size; | |
41 | ||
e039fa4a | 42 | if (tx_info->flags & IEEE80211_TX_CTL_USE_CTS_PROTECT) |
95ea3627 ID |
43 | size = sizeof(struct ieee80211_cts); |
44 | else | |
45 | size = sizeof(struct ieee80211_rts); | |
46 | ||
47 | skb = dev_alloc_skb(size + rt2x00dev->hw->extra_tx_headroom); | |
48 | if (!skb) { | |
49 | WARNING(rt2x00dev, "Failed to create RTS/CTS frame.\n"); | |
50 | return NETDEV_TX_BUSY; | |
51 | } | |
52 | ||
53 | skb_reserve(skb, rt2x00dev->hw->extra_tx_headroom); | |
54 | skb_put(skb, size); | |
55 | ||
e039fa4a JB |
56 | /* |
57 | * Copy TX information over from original frame to | |
58 | * RTS/CTS frame. Note that we set the no encryption flag | |
59 | * since we don't want this frame to be encrypted. | |
60 | * RTS frames should be acked, while CTS-to-self frames | |
61 | * should not. The ready for TX flag is cleared to prevent | |
62 | * it being automatically send when the descriptor is | |
63 | * written to the hardware. | |
64 | */ | |
65 | memcpy(skb->cb, frag_skb->cb, sizeof(skb->cb)); | |
66 | rts_info = IEEE80211_SKB_CB(skb); | |
67 | rts_info->flags |= IEEE80211_TX_CTL_DO_NOT_ENCRYPT; | |
68 | rts_info->flags &= ~IEEE80211_TX_CTL_USE_CTS_PROTECT; | |
69 | rts_info->flags &= ~IEEE80211_TX_CTL_REQ_TX_STATUS; | |
70 | ||
71 | if (tx_info->flags & IEEE80211_TX_CTL_USE_CTS_PROTECT) | |
72 | rts_info->flags |= IEEE80211_TX_CTL_NO_ACK; | |
73 | else | |
74 | rts_info->flags &= ~IEEE80211_TX_CTL_NO_ACK; | |
75 | ||
76 | if (tx_info->flags & IEEE80211_TX_CTL_USE_CTS_PROTECT) | |
77 | ieee80211_ctstoself_get(rt2x00dev->hw, tx_info->control.vif, | |
78 | frag_skb->data, size, tx_info, | |
95ea3627 ID |
79 | (struct ieee80211_cts *)(skb->data)); |
80 | else | |
e039fa4a JB |
81 | ieee80211_rts_get(rt2x00dev->hw, tx_info->control.vif, |
82 | frag_skb->data, size, tx_info, | |
95ea3627 ID |
83 | (struct ieee80211_rts *)(skb->data)); |
84 | ||
baf26a7e ID |
85 | /* |
86 | * Initialize skb descriptor | |
87 | */ | |
88 | skbdesc = get_skb_frame_desc(skb); | |
89 | memset(skbdesc, 0, sizeof(*skbdesc)); | |
90 | skbdesc->flags |= FRAME_DESC_DRIVER_GENERATED; | |
91 | ||
e039fa4a | 92 | if (rt2x00dev->ops->lib->write_tx_data(rt2x00dev, queue, skb)) { |
95ea3627 ID |
93 | WARNING(rt2x00dev, "Failed to send RTS/CTS frame.\n"); |
94 | return NETDEV_TX_BUSY; | |
95 | } | |
96 | ||
97 | return NETDEV_TX_OK; | |
98 | } | |
99 | ||
e039fa4a | 100 | int rt2x00mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb) |
95ea3627 ID |
101 | { |
102 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
e039fa4a | 103 | struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb); |
95ea3627 | 104 | struct ieee80211_hdr *ieee80211hdr = (struct ieee80211_hdr *)skb->data; |
e2530083 | 105 | enum data_queue_qid qid = skb_get_queue_mapping(skb); |
181d6902 | 106 | struct data_queue *queue; |
95ea3627 ID |
107 | u16 frame_control; |
108 | ||
066cb637 ID |
109 | /* |
110 | * Mac80211 might be calling this function while we are trying | |
111 | * to remove the device or perhaps suspending it. | |
112 | * Note that we can only stop the TX queues inside the TX path | |
113 | * due to possible race conditions in mac80211. | |
114 | */ | |
115 | if (!test_bit(DEVICE_PRESENT, &rt2x00dev->flags)) { | |
116 | ieee80211_stop_queues(hw); | |
0f3e63a5 | 117 | dev_kfree_skb_any(skb); |
1230cb83 | 118 | return NETDEV_TX_OK; |
066cb637 ID |
119 | } |
120 | ||
95ea3627 | 121 | /* |
181d6902 | 122 | * Determine which queue to put packet on. |
95ea3627 | 123 | */ |
e039fa4a | 124 | if (tx_info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM && |
e4030a2f | 125 | test_bit(DRIVER_REQUIRE_ATIM_QUEUE, &rt2x00dev->flags)) |
e58c6aca | 126 | queue = rt2x00queue_get_queue(rt2x00dev, QID_ATIM); |
e4030a2f | 127 | else |
e58c6aca | 128 | queue = rt2x00queue_get_queue(rt2x00dev, qid); |
181d6902 | 129 | if (unlikely(!queue)) { |
95ea3627 ID |
130 | ERROR(rt2x00dev, |
131 | "Attempt to send packet over invalid queue %d.\n" | |
e58c6aca | 132 | "Please file bug report to %s.\n", qid, DRV_PROJECT); |
95ea3627 ID |
133 | dev_kfree_skb_any(skb); |
134 | return NETDEV_TX_OK; | |
135 | } | |
136 | ||
137 | /* | |
138 | * If CTS/RTS is required. and this frame is not CTS or RTS, | |
139 | * create and queue that frame first. But make sure we have | |
140 | * at least enough entries available to send this CTS/RTS | |
141 | * frame as well as the data frame. | |
2d9ccf84 ID |
142 | * Note that when the driver has set the set_rts_threshold() |
143 | * callback function it doesn't need software generation of | |
144 | * neither RTS or CTS-to-self frames and handles everything | |
145 | * inside the hardware. | |
95ea3627 ID |
146 | */ |
147 | frame_control = le16_to_cpu(ieee80211hdr->frame_control); | |
148 | if (!is_rts_frame(frame_control) && !is_cts_frame(frame_control) && | |
e039fa4a JB |
149 | (tx_info->flags & (IEEE80211_TX_CTL_USE_RTS_CTS | |
150 | IEEE80211_TX_CTL_USE_CTS_PROTECT)) && | |
2d9ccf84 | 151 | !rt2x00dev->ops->hw->set_rts_threshold) { |
181d6902 | 152 | if (rt2x00queue_available(queue) <= 1) { |
e2530083 | 153 | ieee80211_stop_queue(rt2x00dev->hw, qid); |
95ea3627 | 154 | return NETDEV_TX_BUSY; |
1230cb83 | 155 | } |
95ea3627 | 156 | |
e039fa4a | 157 | if (rt2x00mac_tx_rts_cts(rt2x00dev, queue, skb)) { |
e2530083 | 158 | ieee80211_stop_queue(rt2x00dev->hw, qid); |
95ea3627 | 159 | return NETDEV_TX_BUSY; |
1230cb83 | 160 | } |
95ea3627 ID |
161 | } |
162 | ||
e039fa4a | 163 | if (rt2x00dev->ops->lib->write_tx_data(rt2x00dev, queue, skb)) { |
e2530083 | 164 | ieee80211_stop_queue(rt2x00dev->hw, qid); |
95ea3627 | 165 | return NETDEV_TX_BUSY; |
1230cb83 ID |
166 | } |
167 | ||
181d6902 | 168 | if (rt2x00queue_full(queue)) |
e2530083 | 169 | ieee80211_stop_queue(rt2x00dev->hw, qid); |
95ea3627 ID |
170 | |
171 | if (rt2x00dev->ops->lib->kick_tx_queue) | |
e58c6aca | 172 | rt2x00dev->ops->lib->kick_tx_queue(rt2x00dev, qid); |
95ea3627 ID |
173 | |
174 | return NETDEV_TX_OK; | |
175 | } | |
176 | EXPORT_SYMBOL_GPL(rt2x00mac_tx); | |
177 | ||
178 | int rt2x00mac_start(struct ieee80211_hw *hw) | |
179 | { | |
180 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
95ea3627 | 181 | |
e37ea213 | 182 | if (!test_bit(DEVICE_PRESENT, &rt2x00dev->flags)) |
95ea3627 ID |
183 | return 0; |
184 | ||
e37ea213 | 185 | return rt2x00lib_start(rt2x00dev); |
95ea3627 ID |
186 | } |
187 | EXPORT_SYMBOL_GPL(rt2x00mac_start); | |
188 | ||
189 | void rt2x00mac_stop(struct ieee80211_hw *hw) | |
190 | { | |
191 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
192 | ||
066cb637 ID |
193 | if (!test_bit(DEVICE_PRESENT, &rt2x00dev->flags)) |
194 | return; | |
195 | ||
e37ea213 | 196 | rt2x00lib_stop(rt2x00dev); |
95ea3627 ID |
197 | } |
198 | EXPORT_SYMBOL_GPL(rt2x00mac_stop); | |
199 | ||
200 | int rt2x00mac_add_interface(struct ieee80211_hw *hw, | |
201 | struct ieee80211_if_init_conf *conf) | |
202 | { | |
203 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
6bb40dd1 | 204 | struct rt2x00_intf *intf = vif_to_intf(conf->vif); |
e58c6aca | 205 | struct data_queue *queue = rt2x00queue_get_queue(rt2x00dev, QID_BEACON); |
6bb40dd1 ID |
206 | struct queue_entry *entry = NULL; |
207 | unsigned int i; | |
95ea3627 ID |
208 | |
209 | /* | |
6bb40dd1 ID |
210 | * Don't allow interfaces to be added |
211 | * the device has disappeared. | |
95ea3627 | 212 | */ |
066cb637 | 213 | if (!test_bit(DEVICE_PRESENT, &rt2x00dev->flags) || |
6bb40dd1 ID |
214 | !test_bit(DEVICE_STARTED, &rt2x00dev->flags)) |
215 | return -ENODEV; | |
216 | ||
217 | /* | |
62e70cf8 ID |
218 | * We don't support mixed combinations of sta and ap virtual |
219 | * interfaces. We can only add this interface when the rival | |
220 | * interface count is 0. | |
6bb40dd1 | 221 | */ |
62e70cf8 ID |
222 | if ((conf->type == IEEE80211_IF_TYPE_AP && rt2x00dev->intf_sta_count) || |
223 | (conf->type != IEEE80211_IF_TYPE_AP && rt2x00dev->intf_ap_count)) | |
6bb40dd1 ID |
224 | return -ENOBUFS; |
225 | ||
226 | /* | |
227 | * Check if we exceeded the maximum amount of supported interfaces. | |
228 | */ | |
229 | if ((conf->type == IEEE80211_IF_TYPE_AP && | |
230 | rt2x00dev->intf_ap_count >= rt2x00dev->ops->max_ap_intf) || | |
231 | (conf->type != IEEE80211_IF_TYPE_AP && | |
232 | rt2x00dev->intf_sta_count >= rt2x00dev->ops->max_sta_intf)) | |
233 | return -ENOBUFS; | |
234 | ||
235 | /* | |
236 | * Loop through all beacon queues to find a free | |
237 | * entry. Since there are as much beacon entries | |
238 | * as the maximum interfaces, this search shouldn't | |
239 | * fail. | |
240 | */ | |
241 | for (i = 0; i < queue->limit; i++) { | |
242 | entry = &queue->entries[i]; | |
243 | if (!__test_and_set_bit(ENTRY_BCN_ASSIGNED, &entry->flags)) | |
244 | break; | |
245 | } | |
246 | ||
247 | if (unlikely(i == queue->limit)) | |
95ea3627 ID |
248 | return -ENOBUFS; |
249 | ||
6bb40dd1 ID |
250 | /* |
251 | * We are now absolutely sure the interface can be created, | |
252 | * increase interface count and start initialization. | |
253 | */ | |
254 | ||
255 | if (conf->type == IEEE80211_IF_TYPE_AP) | |
256 | rt2x00dev->intf_ap_count++; | |
257 | else | |
258 | rt2x00dev->intf_sta_count++; | |
259 | ||
260 | spin_lock_init(&intf->lock); | |
261 | intf->beacon = entry; | |
262 | ||
4150c572 JB |
263 | if (conf->type == IEEE80211_IF_TYPE_AP) |
264 | memcpy(&intf->bssid, conf->mac_addr, ETH_ALEN); | |
265 | memcpy(&intf->mac, conf->mac_addr, ETH_ALEN); | |
95ea3627 ID |
266 | |
267 | /* | |
95ea3627 | 268 | * The MAC adddress must be configured after the device |
4150c572 JB |
269 | * has been initialized. Otherwise the device can reset |
270 | * the MAC registers. | |
95ea3627 | 271 | */ |
6bb40dd1 | 272 | rt2x00lib_config_intf(rt2x00dev, intf, conf->type, intf->mac, NULL); |
95ea3627 | 273 | |
e0b005fa ID |
274 | /* |
275 | * Some filters depend on the current working mode. We can force | |
276 | * an update during the next configure_filter() run by mac80211 by | |
277 | * resetting the current packet_filter state. | |
278 | */ | |
279 | rt2x00dev->packet_filter = 0; | |
280 | ||
95ea3627 ID |
281 | return 0; |
282 | } | |
283 | EXPORT_SYMBOL_GPL(rt2x00mac_add_interface); | |
284 | ||
285 | void rt2x00mac_remove_interface(struct ieee80211_hw *hw, | |
286 | struct ieee80211_if_init_conf *conf) | |
287 | { | |
288 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
6bb40dd1 | 289 | struct rt2x00_intf *intf = vif_to_intf(conf->vif); |
95ea3627 ID |
290 | |
291 | /* | |
066cb637 ID |
292 | * Don't allow interfaces to be remove while |
293 | * either the device has disappeared or when | |
294 | * no interface is present. | |
95ea3627 | 295 | */ |
066cb637 | 296 | if (!test_bit(DEVICE_PRESENT, &rt2x00dev->flags) || |
6bb40dd1 ID |
297 | (conf->type == IEEE80211_IF_TYPE_AP && !rt2x00dev->intf_ap_count) || |
298 | (conf->type != IEEE80211_IF_TYPE_AP && !rt2x00dev->intf_sta_count)) | |
95ea3627 ID |
299 | return; |
300 | ||
6bb40dd1 ID |
301 | if (conf->type == IEEE80211_IF_TYPE_AP) |
302 | rt2x00dev->intf_ap_count--; | |
303 | else | |
304 | rt2x00dev->intf_sta_count--; | |
305 | ||
306 | /* | |
307 | * Release beacon entry so it is available for | |
308 | * new interfaces again. | |
309 | */ | |
310 | __clear_bit(ENTRY_BCN_ASSIGNED, &intf->beacon->flags); | |
95ea3627 ID |
311 | |
312 | /* | |
313 | * Make sure the bssid and mac address registers | |
314 | * are cleared to prevent false ACKing of frames. | |
315 | */ | |
6bb40dd1 ID |
316 | rt2x00lib_config_intf(rt2x00dev, intf, |
317 | IEEE80211_IF_TYPE_INVALID, NULL, NULL); | |
95ea3627 ID |
318 | } |
319 | EXPORT_SYMBOL_GPL(rt2x00mac_remove_interface); | |
320 | ||
321 | int rt2x00mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf) | |
322 | { | |
323 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
324 | ||
325 | /* | |
066cb637 ID |
326 | * Mac80211 might be calling this function while we are trying |
327 | * to remove the device or perhaps suspending it. | |
95ea3627 | 328 | */ |
066cb637 | 329 | if (!test_bit(DEVICE_PRESENT, &rt2x00dev->flags)) |
95ea3627 ID |
330 | return 0; |
331 | ||
332 | /* | |
333 | * Check if we need to disable the radio, | |
334 | * if this is not the case, at least the RX must be disabled. | |
335 | */ | |
336 | if (test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags)) { | |
337 | if (!conf->radio_enabled) | |
338 | rt2x00lib_disable_radio(rt2x00dev); | |
339 | else | |
5cbf830e | 340 | rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_OFF); |
95ea3627 ID |
341 | } |
342 | ||
066cb637 | 343 | rt2x00lib_config(rt2x00dev, conf, 0); |
95ea3627 | 344 | |
95ea3627 ID |
345 | /* |
346 | * Reenable RX only if the radio should be on. | |
347 | */ | |
348 | if (test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags)) | |
5cbf830e | 349 | rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_ON); |
95ea3627 ID |
350 | else if (conf->radio_enabled) |
351 | return rt2x00lib_enable_radio(rt2x00dev); | |
352 | ||
353 | return 0; | |
354 | } | |
355 | EXPORT_SYMBOL_GPL(rt2x00mac_config); | |
356 | ||
32bfd35d JB |
357 | int rt2x00mac_config_interface(struct ieee80211_hw *hw, |
358 | struct ieee80211_vif *vif, | |
95ea3627 ID |
359 | struct ieee80211_if_conf *conf) |
360 | { | |
361 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
6bb40dd1 | 362 | struct rt2x00_intf *intf = vif_to_intf(vif); |
95ea3627 ID |
363 | int status; |
364 | ||
365 | /* | |
066cb637 ID |
366 | * Mac80211 might be calling this function while we are trying |
367 | * to remove the device or perhaps suspending it. | |
95ea3627 | 368 | */ |
066cb637 | 369 | if (!test_bit(DEVICE_PRESENT, &rt2x00dev->flags)) |
95ea3627 ID |
370 | return 0; |
371 | ||
6bb40dd1 | 372 | spin_lock(&intf->lock); |
95ea3627 ID |
373 | |
374 | /* | |
375 | * If the interface does not work in master mode, | |
376 | * then the bssid value in the interface structure | |
377 | * should now be set. | |
378 | */ | |
379 | if (conf->type != IEEE80211_IF_TYPE_AP) | |
380 | memcpy(&intf->bssid, conf->bssid, ETH_ALEN); | |
6bb40dd1 ID |
381 | |
382 | spin_unlock(&intf->lock); | |
95ea3627 | 383 | |
e44df929 ID |
384 | /* |
385 | * Call rt2x00_config_intf() outside of the spinlock context since | |
386 | * the call will sleep for USB drivers. By using the ieee80211_if_conf | |
387 | * values as arguments we make keep access to rt2x00_intf thread safe | |
388 | * even without the lock. | |
389 | */ | |
390 | rt2x00lib_config_intf(rt2x00dev, intf, conf->type, NULL, conf->bssid); | |
391 | ||
95ea3627 ID |
392 | /* |
393 | * We only need to initialize the beacon when master mode is enabled. | |
394 | */ | |
395 | if (conf->type != IEEE80211_IF_TYPE_AP || !conf->beacon) | |
396 | return 0; | |
397 | ||
e039fa4a | 398 | status = rt2x00dev->ops->hw->beacon_update(rt2x00dev->hw, conf->beacon); |
95ea3627 ID |
399 | if (status) |
400 | dev_kfree_skb(conf->beacon); | |
401 | ||
402 | return status; | |
403 | } | |
404 | EXPORT_SYMBOL_GPL(rt2x00mac_config_interface); | |
405 | ||
3a643d24 ID |
406 | void rt2x00mac_configure_filter(struct ieee80211_hw *hw, |
407 | unsigned int changed_flags, | |
408 | unsigned int *total_flags, | |
409 | int mc_count, struct dev_addr_list *mc_list) | |
410 | { | |
411 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
412 | ||
413 | /* | |
414 | * Mask off any flags we are going to ignore | |
415 | * from the total_flags field. | |
416 | */ | |
417 | *total_flags &= | |
418 | FIF_ALLMULTI | | |
419 | FIF_FCSFAIL | | |
420 | FIF_PLCPFAIL | | |
421 | FIF_CONTROL | | |
422 | FIF_OTHER_BSS | | |
423 | FIF_PROMISC_IN_BSS; | |
424 | ||
425 | /* | |
426 | * Apply some rules to the filters: | |
427 | * - Some filters imply different filters to be set. | |
428 | * - Some things we can't filter out at all. | |
429 | * - Multicast filter seems to kill broadcast traffic so never use it. | |
430 | */ | |
431 | *total_flags |= FIF_ALLMULTI; | |
432 | if (*total_flags & FIF_OTHER_BSS || | |
433 | *total_flags & FIF_PROMISC_IN_BSS) | |
434 | *total_flags |= FIF_PROMISC_IN_BSS | FIF_OTHER_BSS; | |
435 | ||
436 | /* | |
437 | * Check if there is any work left for us. | |
438 | */ | |
439 | if (rt2x00dev->packet_filter == *total_flags) | |
440 | return; | |
441 | rt2x00dev->packet_filter = *total_flags; | |
442 | ||
443 | if (!test_bit(DRIVER_REQUIRE_SCHEDULED, &rt2x00dev->flags)) | |
3a643d24 | 444 | rt2x00dev->ops->lib->config_filter(rt2x00dev, *total_flags); |
bc5213f4 ID |
445 | else |
446 | queue_work(rt2x00dev->hw->workqueue, &rt2x00dev->filter_work); | |
3a643d24 ID |
447 | } |
448 | EXPORT_SYMBOL_GPL(rt2x00mac_configure_filter); | |
449 | ||
95ea3627 ID |
450 | int rt2x00mac_get_stats(struct ieee80211_hw *hw, |
451 | struct ieee80211_low_level_stats *stats) | |
452 | { | |
453 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
454 | ||
455 | /* | |
456 | * The dot11ACKFailureCount, dot11RTSFailureCount and | |
457 | * dot11RTSSuccessCount are updated in interrupt time. | |
458 | * dot11FCSErrorCount is updated in the link tuner. | |
459 | */ | |
460 | memcpy(stats, &rt2x00dev->low_level_stats, sizeof(*stats)); | |
461 | ||
462 | return 0; | |
463 | } | |
464 | EXPORT_SYMBOL_GPL(rt2x00mac_get_stats); | |
465 | ||
466 | int rt2x00mac_get_tx_stats(struct ieee80211_hw *hw, | |
467 | struct ieee80211_tx_queue_stats *stats) | |
468 | { | |
469 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
470 | unsigned int i; | |
471 | ||
61448f88 | 472 | for (i = 0; i < rt2x00dev->ops->tx_queues; i++) { |
57ffc589 JB |
473 | stats[i].len = rt2x00dev->tx[i].length; |
474 | stats[i].limit = rt2x00dev->tx[i].limit; | |
475 | stats[i].count = rt2x00dev->tx[i].count; | |
181d6902 | 476 | } |
95ea3627 ID |
477 | |
478 | return 0; | |
479 | } | |
480 | EXPORT_SYMBOL_GPL(rt2x00mac_get_tx_stats); | |
481 | ||
471b3efd JB |
482 | void rt2x00mac_bss_info_changed(struct ieee80211_hw *hw, |
483 | struct ieee80211_vif *vif, | |
484 | struct ieee80211_bss_conf *bss_conf, | |
485 | u32 changes) | |
5c58ee51 ID |
486 | { |
487 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
6bb40dd1 | 488 | struct rt2x00_intf *intf = vif_to_intf(vif); |
3a643d24 | 489 | unsigned int delayed = 0; |
5c58ee51 ID |
490 | |
491 | /* | |
6bb40dd1 ID |
492 | * When the association status has changed we must reset the link |
493 | * tuner counter. This is because some drivers determine if they | |
494 | * should perform link tuning based on the number of seconds | |
495 | * while associated or not associated. | |
5c58ee51 | 496 | */ |
6bb40dd1 ID |
497 | if (changes & BSS_CHANGED_ASSOC) { |
498 | rt2x00dev->link.count = 0; | |
5c58ee51 | 499 | |
6bb40dd1 ID |
500 | if (bss_conf->assoc) |
501 | rt2x00dev->intf_associated++; | |
502 | else | |
503 | rt2x00dev->intf_associated--; | |
a2e1d52a ID |
504 | |
505 | if (!test_bit(DRIVER_REQUIRE_SCHEDULED, &rt2x00dev->flags)) | |
506 | rt2x00leds_led_assoc(rt2x00dev, | |
507 | !!rt2x00dev->intf_associated); | |
508 | else | |
509 | delayed |= DELAYED_LED_ASSOC; | |
6bb40dd1 | 510 | } |
5c58ee51 | 511 | |
6bb40dd1 | 512 | /* |
72810379 ID |
513 | * When the erp information has changed, we should perform |
514 | * additional configuration steps. For all other changes we are done. | |
6bb40dd1 | 515 | */ |
3a643d24 ID |
516 | if (changes & BSS_CHANGED_ERP_PREAMBLE) { |
517 | if (!test_bit(DRIVER_REQUIRE_SCHEDULED, &rt2x00dev->flags)) | |
518 | rt2x00lib_config_erp(rt2x00dev, intf, bss_conf); | |
519 | else | |
520 | delayed |= DELAYED_CONFIG_ERP; | |
521 | } | |
5c58ee51 | 522 | |
72810379 ID |
523 | spin_lock(&intf->lock); |
524 | memcpy(&intf->conf, bss_conf, sizeof(*bss_conf)); | |
3a643d24 ID |
525 | if (delayed) { |
526 | intf->delayed_flags |= delayed; | |
527 | queue_work(rt2x00dev->hw->workqueue, &rt2x00dev->intf_work); | |
528 | } | |
72810379 | 529 | spin_unlock(&intf->lock); |
5c58ee51 | 530 | } |
471b3efd | 531 | EXPORT_SYMBOL_GPL(rt2x00mac_bss_info_changed); |
5c58ee51 | 532 | |
e100bb64 | 533 | int rt2x00mac_conf_tx(struct ieee80211_hw *hw, u16 queue_idx, |
95ea3627 ID |
534 | const struct ieee80211_tx_queue_params *params) |
535 | { | |
536 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
181d6902 | 537 | struct data_queue *queue; |
95ea3627 | 538 | |
181d6902 ID |
539 | queue = rt2x00queue_get_queue(rt2x00dev, queue_idx); |
540 | if (unlikely(!queue)) | |
95ea3627 ID |
541 | return -EINVAL; |
542 | ||
543 | /* | |
544 | * The passed variables are stored as real value ((2^n)-1). | |
545 | * Ralink registers require to know the bit number 'n'. | |
546 | */ | |
3b3618ad | 547 | if (params->cw_min > 0) |
181d6902 | 548 | queue->cw_min = fls(params->cw_min); |
95ea3627 | 549 | else |
181d6902 | 550 | queue->cw_min = 5; /* cw_min: 2^5 = 32. */ |
95ea3627 | 551 | |
3b3618ad | 552 | if (params->cw_max > 0) |
181d6902 | 553 | queue->cw_max = fls(params->cw_max); |
95ea3627 | 554 | else |
181d6902 | 555 | queue->cw_max = 10; /* cw_min: 2^10 = 1024. */ |
95ea3627 | 556 | |
3b3618ad | 557 | if (params->aifs >= 0) |
181d6902 | 558 | queue->aifs = params->aifs; |
95ea3627 | 559 | else |
181d6902 | 560 | queue->aifs = 2; |
95ea3627 ID |
561 | |
562 | INFO(rt2x00dev, | |
181d6902 ID |
563 | "Configured TX queue %d - CWmin: %d, CWmax: %d, Aifs: %d.\n", |
564 | queue_idx, queue->cw_min, queue->cw_max, queue->aifs); | |
95ea3627 ID |
565 | |
566 | return 0; | |
567 | } | |
568 | EXPORT_SYMBOL_GPL(rt2x00mac_conf_tx); |