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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); |
e039fa4a | 37 | struct ieee80211_tx_info *rts_info; |
95ea3627 ID |
38 | struct sk_buff *skb; |
39 | int size; | |
40 | ||
e039fa4a | 41 | if (tx_info->flags & IEEE80211_TX_CTL_USE_CTS_PROTECT) |
95ea3627 ID |
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 | ||
e039fa4a JB |
55 | /* |
56 | * Copy TX information over from original frame to | |
57 | * RTS/CTS frame. Note that we set the no encryption flag | |
58 | * since we don't want this frame to be encrypted. | |
59 | * RTS frames should be acked, while CTS-to-self frames | |
60 | * should not. The ready for TX flag is cleared to prevent | |
61 | * it being automatically send when the descriptor is | |
62 | * written to the hardware. | |
63 | */ | |
64 | memcpy(skb->cb, frag_skb->cb, sizeof(skb->cb)); | |
65 | rts_info = IEEE80211_SKB_CB(skb); | |
d0f09804 | 66 | rts_info->control.hw_key = NULL; |
58b642ec | 67 | rts_info->flags &= ~IEEE80211_TX_CTL_USE_RTS_CTS; |
e039fa4a JB |
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 | ||
6db3786a | 85 | if (rt2x00queue_write_tx_frame(queue, skb)) { |
e7087a82 | 86 | dev_kfree_skb_any(skb); |
95ea3627 ID |
87 | WARNING(rt2x00dev, "Failed to send RTS/CTS frame.\n"); |
88 | return NETDEV_TX_BUSY; | |
89 | } | |
90 | ||
91 | return NETDEV_TX_OK; | |
92 | } | |
93 | ||
e039fa4a | 94 | int rt2x00mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb) |
95ea3627 ID |
95 | { |
96 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
e039fa4a | 97 | struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb); |
95ea3627 | 98 | struct ieee80211_hdr *ieee80211hdr = (struct ieee80211_hdr *)skb->data; |
e2530083 | 99 | enum data_queue_qid qid = skb_get_queue_mapping(skb); |
181d6902 | 100 | struct data_queue *queue; |
95ea3627 ID |
101 | u16 frame_control; |
102 | ||
066cb637 ID |
103 | /* |
104 | * Mac80211 might be calling this function while we are trying | |
105 | * to remove the device or perhaps suspending it. | |
106 | * Note that we can only stop the TX queues inside the TX path | |
107 | * due to possible race conditions in mac80211. | |
108 | */ | |
109 | if (!test_bit(DEVICE_PRESENT, &rt2x00dev->flags)) { | |
110 | ieee80211_stop_queues(hw); | |
0f3e63a5 | 111 | dev_kfree_skb_any(skb); |
1230cb83 | 112 | return NETDEV_TX_OK; |
066cb637 ID |
113 | } |
114 | ||
95ea3627 | 115 | /* |
181d6902 | 116 | * Determine which queue to put packet on. |
95ea3627 | 117 | */ |
e039fa4a | 118 | if (tx_info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM && |
e4030a2f | 119 | test_bit(DRIVER_REQUIRE_ATIM_QUEUE, &rt2x00dev->flags)) |
e58c6aca | 120 | queue = rt2x00queue_get_queue(rt2x00dev, QID_ATIM); |
e4030a2f | 121 | else |
e58c6aca | 122 | queue = rt2x00queue_get_queue(rt2x00dev, qid); |
181d6902 | 123 | if (unlikely(!queue)) { |
95ea3627 ID |
124 | ERROR(rt2x00dev, |
125 | "Attempt to send packet over invalid queue %d.\n" | |
e58c6aca | 126 | "Please file bug report to %s.\n", qid, DRV_PROJECT); |
95ea3627 ID |
127 | dev_kfree_skb_any(skb); |
128 | return NETDEV_TX_OK; | |
129 | } | |
130 | ||
131 | /* | |
772a249d ID |
132 | * If CTS/RTS is required. create and queue that frame first. |
133 | * Make sure we have at least enough entries available to send | |
134 | * this CTS/RTS frame as well as the data frame. | |
2d9ccf84 ID |
135 | * Note that when the driver has set the set_rts_threshold() |
136 | * callback function it doesn't need software generation of | |
772a249d | 137 | * either RTS or CTS-to-self frame and handles everything |
2d9ccf84 | 138 | * inside the hardware. |
95ea3627 ID |
139 | */ |
140 | frame_control = le16_to_cpu(ieee80211hdr->frame_control); | |
772a249d | 141 | if ((tx_info->flags & (IEEE80211_TX_CTL_USE_RTS_CTS | |
e039fa4a | 142 | IEEE80211_TX_CTL_USE_CTS_PROTECT)) && |
2d9ccf84 | 143 | !rt2x00dev->ops->hw->set_rts_threshold) { |
181d6902 | 144 | if (rt2x00queue_available(queue) <= 1) { |
e2530083 | 145 | ieee80211_stop_queue(rt2x00dev->hw, qid); |
95ea3627 | 146 | return NETDEV_TX_BUSY; |
1230cb83 | 147 | } |
95ea3627 | 148 | |
e039fa4a | 149 | if (rt2x00mac_tx_rts_cts(rt2x00dev, queue, skb)) { |
e2530083 | 150 | ieee80211_stop_queue(rt2x00dev->hw, qid); |
95ea3627 | 151 | return NETDEV_TX_BUSY; |
1230cb83 | 152 | } |
95ea3627 ID |
153 | } |
154 | ||
6db3786a | 155 | if (rt2x00queue_write_tx_frame(queue, skb)) { |
e2530083 | 156 | ieee80211_stop_queue(rt2x00dev->hw, qid); |
95ea3627 | 157 | return NETDEV_TX_BUSY; |
1230cb83 ID |
158 | } |
159 | ||
b869767b | 160 | if (rt2x00queue_threshold(queue)) |
e2530083 | 161 | ieee80211_stop_queue(rt2x00dev->hw, qid); |
95ea3627 | 162 | |
95ea3627 ID |
163 | return NETDEV_TX_OK; |
164 | } | |
165 | EXPORT_SYMBOL_GPL(rt2x00mac_tx); | |
166 | ||
167 | int rt2x00mac_start(struct ieee80211_hw *hw) | |
168 | { | |
169 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
95ea3627 | 170 | |
e37ea213 | 171 | if (!test_bit(DEVICE_PRESENT, &rt2x00dev->flags)) |
95ea3627 ID |
172 | return 0; |
173 | ||
e37ea213 | 174 | return rt2x00lib_start(rt2x00dev); |
95ea3627 ID |
175 | } |
176 | EXPORT_SYMBOL_GPL(rt2x00mac_start); | |
177 | ||
178 | void rt2x00mac_stop(struct ieee80211_hw *hw) | |
179 | { | |
180 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
181 | ||
066cb637 ID |
182 | if (!test_bit(DEVICE_PRESENT, &rt2x00dev->flags)) |
183 | return; | |
184 | ||
e37ea213 | 185 | rt2x00lib_stop(rt2x00dev); |
95ea3627 ID |
186 | } |
187 | EXPORT_SYMBOL_GPL(rt2x00mac_stop); | |
188 | ||
189 | int rt2x00mac_add_interface(struct ieee80211_hw *hw, | |
190 | struct ieee80211_if_init_conf *conf) | |
191 | { | |
192 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
6bb40dd1 | 193 | struct rt2x00_intf *intf = vif_to_intf(conf->vif); |
e58c6aca | 194 | struct data_queue *queue = rt2x00queue_get_queue(rt2x00dev, QID_BEACON); |
6bb40dd1 ID |
195 | struct queue_entry *entry = NULL; |
196 | unsigned int i; | |
95ea3627 ID |
197 | |
198 | /* | |
6bb40dd1 ID |
199 | * Don't allow interfaces to be added |
200 | * the device has disappeared. | |
95ea3627 | 201 | */ |
066cb637 | 202 | if (!test_bit(DEVICE_PRESENT, &rt2x00dev->flags) || |
6bb40dd1 ID |
203 | !test_bit(DEVICE_STARTED, &rt2x00dev->flags)) |
204 | return -ENODEV; | |
205 | ||
206 | /* | |
62e70cf8 ID |
207 | * We don't support mixed combinations of sta and ap virtual |
208 | * interfaces. We can only add this interface when the rival | |
209 | * interface count is 0. | |
6bb40dd1 | 210 | */ |
62e70cf8 ID |
211 | if ((conf->type == IEEE80211_IF_TYPE_AP && rt2x00dev->intf_sta_count) || |
212 | (conf->type != IEEE80211_IF_TYPE_AP && rt2x00dev->intf_ap_count)) | |
6bb40dd1 ID |
213 | return -ENOBUFS; |
214 | ||
215 | /* | |
216 | * Check if we exceeded the maximum amount of supported interfaces. | |
217 | */ | |
218 | if ((conf->type == IEEE80211_IF_TYPE_AP && | |
219 | rt2x00dev->intf_ap_count >= rt2x00dev->ops->max_ap_intf) || | |
220 | (conf->type != IEEE80211_IF_TYPE_AP && | |
221 | rt2x00dev->intf_sta_count >= rt2x00dev->ops->max_sta_intf)) | |
222 | return -ENOBUFS; | |
223 | ||
224 | /* | |
225 | * Loop through all beacon queues to find a free | |
226 | * entry. Since there are as much beacon entries | |
227 | * as the maximum interfaces, this search shouldn't | |
228 | * fail. | |
229 | */ | |
230 | for (i = 0; i < queue->limit; i++) { | |
231 | entry = &queue->entries[i]; | |
232 | if (!__test_and_set_bit(ENTRY_BCN_ASSIGNED, &entry->flags)) | |
233 | break; | |
234 | } | |
235 | ||
236 | if (unlikely(i == queue->limit)) | |
95ea3627 ID |
237 | return -ENOBUFS; |
238 | ||
6bb40dd1 ID |
239 | /* |
240 | * We are now absolutely sure the interface can be created, | |
241 | * increase interface count and start initialization. | |
242 | */ | |
243 | ||
244 | if (conf->type == IEEE80211_IF_TYPE_AP) | |
245 | rt2x00dev->intf_ap_count++; | |
246 | else | |
247 | rt2x00dev->intf_sta_count++; | |
248 | ||
249 | spin_lock_init(&intf->lock); | |
250 | intf->beacon = entry; | |
251 | ||
4150c572 JB |
252 | if (conf->type == IEEE80211_IF_TYPE_AP) |
253 | memcpy(&intf->bssid, conf->mac_addr, ETH_ALEN); | |
254 | memcpy(&intf->mac, conf->mac_addr, ETH_ALEN); | |
95ea3627 ID |
255 | |
256 | /* | |
95ea3627 | 257 | * The MAC adddress must be configured after the device |
4150c572 JB |
258 | * has been initialized. Otherwise the device can reset |
259 | * the MAC registers. | |
95ea3627 | 260 | */ |
6bb40dd1 | 261 | rt2x00lib_config_intf(rt2x00dev, intf, conf->type, intf->mac, NULL); |
95ea3627 | 262 | |
e0b005fa ID |
263 | /* |
264 | * Some filters depend on the current working mode. We can force | |
265 | * an update during the next configure_filter() run by mac80211 by | |
266 | * resetting the current packet_filter state. | |
267 | */ | |
268 | rt2x00dev->packet_filter = 0; | |
269 | ||
95ea3627 ID |
270 | return 0; |
271 | } | |
272 | EXPORT_SYMBOL_GPL(rt2x00mac_add_interface); | |
273 | ||
274 | void rt2x00mac_remove_interface(struct ieee80211_hw *hw, | |
275 | struct ieee80211_if_init_conf *conf) | |
276 | { | |
277 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
6bb40dd1 | 278 | struct rt2x00_intf *intf = vif_to_intf(conf->vif); |
95ea3627 ID |
279 | |
280 | /* | |
066cb637 ID |
281 | * Don't allow interfaces to be remove while |
282 | * either the device has disappeared or when | |
283 | * no interface is present. | |
95ea3627 | 284 | */ |
066cb637 | 285 | if (!test_bit(DEVICE_PRESENT, &rt2x00dev->flags) || |
6bb40dd1 ID |
286 | (conf->type == IEEE80211_IF_TYPE_AP && !rt2x00dev->intf_ap_count) || |
287 | (conf->type != IEEE80211_IF_TYPE_AP && !rt2x00dev->intf_sta_count)) | |
95ea3627 ID |
288 | return; |
289 | ||
6bb40dd1 ID |
290 | if (conf->type == IEEE80211_IF_TYPE_AP) |
291 | rt2x00dev->intf_ap_count--; | |
292 | else | |
293 | rt2x00dev->intf_sta_count--; | |
294 | ||
295 | /* | |
296 | * Release beacon entry so it is available for | |
297 | * new interfaces again. | |
298 | */ | |
299 | __clear_bit(ENTRY_BCN_ASSIGNED, &intf->beacon->flags); | |
95ea3627 ID |
300 | |
301 | /* | |
302 | * Make sure the bssid and mac address registers | |
303 | * are cleared to prevent false ACKing of frames. | |
304 | */ | |
6bb40dd1 ID |
305 | rt2x00lib_config_intf(rt2x00dev, intf, |
306 | IEEE80211_IF_TYPE_INVALID, NULL, NULL); | |
95ea3627 ID |
307 | } |
308 | EXPORT_SYMBOL_GPL(rt2x00mac_remove_interface); | |
309 | ||
310 | int rt2x00mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf) | |
311 | { | |
312 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
74c0ee9b | 313 | int force_reconfig; |
95ea3627 ID |
314 | |
315 | /* | |
066cb637 ID |
316 | * Mac80211 might be calling this function while we are trying |
317 | * to remove the device or perhaps suspending it. | |
95ea3627 | 318 | */ |
066cb637 | 319 | if (!test_bit(DEVICE_PRESENT, &rt2x00dev->flags)) |
95ea3627 ID |
320 | return 0; |
321 | ||
322 | /* | |
323 | * Check if we need to disable the radio, | |
324 | * if this is not the case, at least the RX must be disabled. | |
325 | */ | |
326 | if (test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags)) { | |
327 | if (!conf->radio_enabled) | |
328 | rt2x00lib_disable_radio(rt2x00dev); | |
329 | else | |
5cbf830e | 330 | rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_OFF); |
95ea3627 ID |
331 | } |
332 | ||
74c0ee9b ID |
333 | /* |
334 | * When the DEVICE_DIRTY_CONFIG flag is set, the device has recently | |
335 | * been started and the configuration must be forced upon the hardware. | |
336 | * Otherwise registers will not be intialized correctly and could | |
337 | * result in non-working hardware because essential registers aren't | |
338 | * initialized. | |
339 | */ | |
340 | force_reconfig = | |
341 | __test_and_clear_bit(DEVICE_DIRTY_CONFIG, &rt2x00dev->flags); | |
342 | ||
343 | rt2x00lib_config(rt2x00dev, conf, force_reconfig); | |
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); |
bd88a781 ID |
363 | int update_bssid = 0; |
364 | int status = 0; | |
95ea3627 ID |
365 | |
366 | /* | |
066cb637 ID |
367 | * Mac80211 might be calling this function while we are trying |
368 | * to remove the device or perhaps suspending it. | |
95ea3627 | 369 | */ |
066cb637 | 370 | if (!test_bit(DEVICE_PRESENT, &rt2x00dev->flags)) |
95ea3627 ID |
371 | return 0; |
372 | ||
6bb40dd1 | 373 | spin_lock(&intf->lock); |
95ea3627 ID |
374 | |
375 | /* | |
9d139c81 JB |
376 | * conf->bssid can be NULL if coming from the internal |
377 | * beacon update routine. | |
95ea3627 | 378 | */ |
bd88a781 ID |
379 | if (conf->changed & IEEE80211_IFCC_BSSID && conf->bssid) { |
380 | update_bssid = 1; | |
95ea3627 | 381 | memcpy(&intf->bssid, conf->bssid, ETH_ALEN); |
bd88a781 | 382 | } |
6bb40dd1 ID |
383 | |
384 | spin_unlock(&intf->lock); | |
95ea3627 | 385 | |
e44df929 ID |
386 | /* |
387 | * Call rt2x00_config_intf() outside of the spinlock context since | |
388 | * the call will sleep for USB drivers. By using the ieee80211_if_conf | |
389 | * values as arguments we make keep access to rt2x00_intf thread safe | |
390 | * even without the lock. | |
391 | */ | |
bd88a781 ID |
392 | rt2x00lib_config_intf(rt2x00dev, intf, vif->type, NULL, |
393 | update_bssid ? conf->bssid : NULL); | |
e44df929 | 394 | |
95ea3627 | 395 | /* |
bd88a781 | 396 | * Update the beacon. |
95ea3627 | 397 | */ |
bd88a781 ID |
398 | if (conf->changed & IEEE80211_IFCC_BEACON) |
399 | status = rt2x00queue_update_beacon(rt2x00dev, vif); | |
95ea3627 ID |
400 | |
401 | return status; | |
402 | } | |
403 | EXPORT_SYMBOL_GPL(rt2x00mac_config_interface); | |
404 | ||
3a643d24 ID |
405 | void rt2x00mac_configure_filter(struct ieee80211_hw *hw, |
406 | unsigned int changed_flags, | |
407 | unsigned int *total_flags, | |
408 | int mc_count, struct dev_addr_list *mc_list) | |
409 | { | |
410 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
411 | ||
412 | /* | |
413 | * Mask off any flags we are going to ignore | |
414 | * from the total_flags field. | |
415 | */ | |
416 | *total_flags &= | |
417 | FIF_ALLMULTI | | |
418 | FIF_FCSFAIL | | |
419 | FIF_PLCPFAIL | | |
420 | FIF_CONTROL | | |
421 | FIF_OTHER_BSS | | |
422 | FIF_PROMISC_IN_BSS; | |
423 | ||
424 | /* | |
425 | * Apply some rules to the filters: | |
426 | * - Some filters imply different filters to be set. | |
427 | * - Some things we can't filter out at all. | |
428 | * - Multicast filter seems to kill broadcast traffic so never use it. | |
429 | */ | |
430 | *total_flags |= FIF_ALLMULTI; | |
431 | if (*total_flags & FIF_OTHER_BSS || | |
432 | *total_flags & FIF_PROMISC_IN_BSS) | |
433 | *total_flags |= FIF_PROMISC_IN_BSS | FIF_OTHER_BSS; | |
434 | ||
435 | /* | |
436 | * Check if there is any work left for us. | |
437 | */ | |
438 | if (rt2x00dev->packet_filter == *total_flags) | |
439 | return; | |
440 | rt2x00dev->packet_filter = *total_flags; | |
441 | ||
442 | if (!test_bit(DRIVER_REQUIRE_SCHEDULED, &rt2x00dev->flags)) | |
3a643d24 | 443 | rt2x00dev->ops->lib->config_filter(rt2x00dev, *total_flags); |
bc5213f4 | 444 | else |
8e260c22 | 445 | queue_work(rt2x00dev->hw->workqueue, &rt2x00dev->filter_work); |
3a643d24 ID |
446 | } |
447 | EXPORT_SYMBOL_GPL(rt2x00mac_configure_filter); | |
448 | ||
95ea3627 ID |
449 | int rt2x00mac_get_stats(struct ieee80211_hw *hw, |
450 | struct ieee80211_low_level_stats *stats) | |
451 | { | |
452 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
453 | ||
454 | /* | |
455 | * The dot11ACKFailureCount, dot11RTSFailureCount and | |
456 | * dot11RTSSuccessCount are updated in interrupt time. | |
457 | * dot11FCSErrorCount is updated in the link tuner. | |
458 | */ | |
459 | memcpy(stats, &rt2x00dev->low_level_stats, sizeof(*stats)); | |
460 | ||
461 | return 0; | |
462 | } | |
463 | EXPORT_SYMBOL_GPL(rt2x00mac_get_stats); | |
464 | ||
465 | int rt2x00mac_get_tx_stats(struct ieee80211_hw *hw, | |
466 | struct ieee80211_tx_queue_stats *stats) | |
467 | { | |
468 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
469 | unsigned int i; | |
470 | ||
61448f88 | 471 | for (i = 0; i < rt2x00dev->ops->tx_queues; i++) { |
57ffc589 JB |
472 | stats[i].len = rt2x00dev->tx[i].length; |
473 | stats[i].limit = rt2x00dev->tx[i].limit; | |
474 | stats[i].count = rt2x00dev->tx[i].count; | |
181d6902 | 475 | } |
95ea3627 ID |
476 | |
477 | return 0; | |
478 | } | |
479 | EXPORT_SYMBOL_GPL(rt2x00mac_get_tx_stats); | |
480 | ||
471b3efd JB |
481 | void rt2x00mac_bss_info_changed(struct ieee80211_hw *hw, |
482 | struct ieee80211_vif *vif, | |
483 | struct ieee80211_bss_conf *bss_conf, | |
484 | u32 changes) | |
5c58ee51 ID |
485 | { |
486 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
6bb40dd1 | 487 | struct rt2x00_intf *intf = vif_to_intf(vif); |
3a643d24 | 488 | unsigned int delayed = 0; |
5c58ee51 ID |
489 | |
490 | /* | |
6bb40dd1 ID |
491 | * When the association status has changed we must reset the link |
492 | * tuner counter. This is because some drivers determine if they | |
493 | * should perform link tuning based on the number of seconds | |
494 | * while associated or not associated. | |
5c58ee51 | 495 | */ |
6bb40dd1 ID |
496 | if (changes & BSS_CHANGED_ASSOC) { |
497 | rt2x00dev->link.count = 0; | |
5c58ee51 | 498 | |
6bb40dd1 ID |
499 | if (bss_conf->assoc) |
500 | rt2x00dev->intf_associated++; | |
501 | else | |
502 | rt2x00dev->intf_associated--; | |
a2e1d52a ID |
503 | |
504 | if (!test_bit(DRIVER_REQUIRE_SCHEDULED, &rt2x00dev->flags)) | |
505 | rt2x00leds_led_assoc(rt2x00dev, | |
506 | !!rt2x00dev->intf_associated); | |
507 | else | |
508 | delayed |= DELAYED_LED_ASSOC; | |
6bb40dd1 | 509 | } |
5c58ee51 | 510 | |
6bb40dd1 | 511 | /* |
72810379 ID |
512 | * When the erp information has changed, we should perform |
513 | * additional configuration steps. For all other changes we are done. | |
6bb40dd1 | 514 | */ |
e360c4cb | 515 | if (changes & (BSS_CHANGED_ERP_PREAMBLE | BSS_CHANGED_ERP_CTS_PROT)) { |
3a643d24 ID |
516 | if (!test_bit(DRIVER_REQUIRE_SCHEDULED, &rt2x00dev->flags)) |
517 | rt2x00lib_config_erp(rt2x00dev, intf, bss_conf); | |
518 | else | |
519 | delayed |= DELAYED_CONFIG_ERP; | |
520 | } | |
5c58ee51 | 521 | |
72810379 ID |
522 | spin_lock(&intf->lock); |
523 | memcpy(&intf->conf, bss_conf, sizeof(*bss_conf)); | |
3a643d24 ID |
524 | if (delayed) { |
525 | intf->delayed_flags |= delayed; | |
8e260c22 | 526 | schedule_work(&rt2x00dev->intf_work); |
3a643d24 | 527 | } |
72810379 | 528 | spin_unlock(&intf->lock); |
5c58ee51 | 529 | } |
471b3efd | 530 | EXPORT_SYMBOL_GPL(rt2x00mac_bss_info_changed); |
5c58ee51 | 531 | |
e100bb64 | 532 | int rt2x00mac_conf_tx(struct ieee80211_hw *hw, u16 queue_idx, |
95ea3627 ID |
533 | const struct ieee80211_tx_queue_params *params) |
534 | { | |
535 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
181d6902 | 536 | struct data_queue *queue; |
95ea3627 | 537 | |
181d6902 ID |
538 | queue = rt2x00queue_get_queue(rt2x00dev, queue_idx); |
539 | if (unlikely(!queue)) | |
95ea3627 ID |
540 | return -EINVAL; |
541 | ||
542 | /* | |
543 | * The passed variables are stored as real value ((2^n)-1). | |
544 | * Ralink registers require to know the bit number 'n'. | |
545 | */ | |
3b3618ad | 546 | if (params->cw_min > 0) |
181d6902 | 547 | queue->cw_min = fls(params->cw_min); |
95ea3627 | 548 | else |
181d6902 | 549 | queue->cw_min = 5; /* cw_min: 2^5 = 32. */ |
95ea3627 | 550 | |
3b3618ad | 551 | if (params->cw_max > 0) |
181d6902 | 552 | queue->cw_max = fls(params->cw_max); |
95ea3627 | 553 | else |
181d6902 | 554 | queue->cw_max = 10; /* cw_min: 2^10 = 1024. */ |
95ea3627 | 555 | |
0b57664c | 556 | queue->aifs = params->aifs; |
95ea3627 ID |
557 | |
558 | INFO(rt2x00dev, | |
181d6902 ID |
559 | "Configured TX queue %d - CWmin: %d, CWmax: %d, Aifs: %d.\n", |
560 | queue_idx, queue->cw_min, queue->cw_max, queue->aifs); | |
95ea3627 ID |
561 | |
562 | return 0; | |
563 | } | |
564 | EXPORT_SYMBOL_GPL(rt2x00mac_conf_tx); |