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); |
e039fa4a | 37 | struct ieee80211_tx_info *rts_info; |
95ea3627 | 38 | struct sk_buff *skb; |
2bb057d0 | 39 | unsigned int data_length; |
b9740c23 | 40 | int retval = 0; |
95ea3627 | 41 | |
e039fa4a | 42 | if (tx_info->flags & IEEE80211_TX_CTL_USE_CTS_PROTECT) |
2bb057d0 | 43 | data_length = sizeof(struct ieee80211_cts); |
95ea3627 | 44 | else |
2bb057d0 | 45 | data_length = sizeof(struct ieee80211_rts); |
95ea3627 | 46 | |
2bb057d0 | 47 | skb = dev_alloc_skb(data_length + rt2x00dev->hw->extra_tx_headroom); |
b9740c23 | 48 | if (unlikely(!skb)) { |
95ea3627 | 49 | WARNING(rt2x00dev, "Failed to create RTS/CTS frame.\n"); |
b9740c23 | 50 | return -ENOMEM; |
95ea3627 ID |
51 | } |
52 | ||
53 | skb_reserve(skb, rt2x00dev->hw->extra_tx_headroom); | |
2bb057d0 | 54 | skb_put(skb, data_length); |
95ea3627 | 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); | |
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 | ||
2bb057d0 ID |
76 | skb->do_not_encrypt = 1; |
77 | ||
78 | /* | |
79 | * RTS/CTS frame should use the length of the frame plus any | |
80 | * encryption overhead that will be added by the hardware. | |
81 | */ | |
82 | #ifdef CONFIG_RT2X00_LIB_CRYPTO | |
83 | if (!frag_skb->do_not_encrypt) | |
84 | data_length += rt2x00crypto_tx_overhead(tx_info); | |
85 | #endif /* CONFIG_RT2X00_LIB_CRYPTO */ | |
86 | ||
e039fa4a JB |
87 | if (tx_info->flags & IEEE80211_TX_CTL_USE_CTS_PROTECT) |
88 | ieee80211_ctstoself_get(rt2x00dev->hw, tx_info->control.vif, | |
2bb057d0 | 89 | frag_skb->data, data_length, tx_info, |
95ea3627 ID |
90 | (struct ieee80211_cts *)(skb->data)); |
91 | else | |
e039fa4a | 92 | ieee80211_rts_get(rt2x00dev->hw, tx_info->control.vif, |
2bb057d0 | 93 | frag_skb->data, data_length, tx_info, |
95ea3627 ID |
94 | (struct ieee80211_rts *)(skb->data)); |
95 | ||
b9740c23 DW |
96 | retval = rt2x00queue_write_tx_frame(queue, skb); |
97 | if (retval) { | |
e7087a82 | 98 | dev_kfree_skb_any(skb); |
95ea3627 | 99 | WARNING(rt2x00dev, "Failed to send RTS/CTS frame.\n"); |
95ea3627 ID |
100 | } |
101 | ||
b9740c23 | 102 | return retval; |
95ea3627 ID |
103 | } |
104 | ||
e039fa4a | 105 | int rt2x00mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb) |
95ea3627 ID |
106 | { |
107 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
e039fa4a | 108 | struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb); |
95ea3627 | 109 | struct ieee80211_hdr *ieee80211hdr = (struct ieee80211_hdr *)skb->data; |
e2530083 | 110 | enum data_queue_qid qid = skb_get_queue_mapping(skb); |
181d6902 | 111 | struct data_queue *queue; |
95ea3627 ID |
112 | u16 frame_control; |
113 | ||
066cb637 ID |
114 | /* |
115 | * Mac80211 might be calling this function while we are trying | |
116 | * to remove the device or perhaps suspending it. | |
117 | * Note that we can only stop the TX queues inside the TX path | |
118 | * due to possible race conditions in mac80211. | |
119 | */ | |
0262ab0d | 120 | if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags)) |
b9740c23 | 121 | goto exit_fail; |
066cb637 | 122 | |
95ea3627 | 123 | /* |
181d6902 | 124 | * Determine which queue to put packet on. |
95ea3627 | 125 | */ |
e039fa4a | 126 | if (tx_info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM && |
e4030a2f | 127 | test_bit(DRIVER_REQUIRE_ATIM_QUEUE, &rt2x00dev->flags)) |
e58c6aca | 128 | queue = rt2x00queue_get_queue(rt2x00dev, QID_ATIM); |
e4030a2f | 129 | else |
e58c6aca | 130 | queue = rt2x00queue_get_queue(rt2x00dev, qid); |
181d6902 | 131 | if (unlikely(!queue)) { |
95ea3627 ID |
132 | ERROR(rt2x00dev, |
133 | "Attempt to send packet over invalid queue %d.\n" | |
e58c6aca | 134 | "Please file bug report to %s.\n", qid, DRV_PROJECT); |
95ea3627 ID |
135 | dev_kfree_skb_any(skb); |
136 | return NETDEV_TX_OK; | |
137 | } | |
138 | ||
139 | /* | |
772a249d ID |
140 | * If CTS/RTS is required. create and queue that frame first. |
141 | * Make sure we have at least enough entries available to send | |
142 | * this CTS/RTS frame as well as the data frame. | |
2d9ccf84 ID |
143 | * Note that when the driver has set the set_rts_threshold() |
144 | * callback function it doesn't need software generation of | |
772a249d | 145 | * either RTS or CTS-to-self frame and handles everything |
2d9ccf84 | 146 | * inside the hardware. |
95ea3627 ID |
147 | */ |
148 | frame_control = le16_to_cpu(ieee80211hdr->frame_control); | |
772a249d | 149 | if ((tx_info->flags & (IEEE80211_TX_CTL_USE_RTS_CTS | |
e039fa4a | 150 | IEEE80211_TX_CTL_USE_CTS_PROTECT)) && |
2d9ccf84 | 151 | !rt2x00dev->ops->hw->set_rts_threshold) { |
b9740c23 DW |
152 | if (rt2x00queue_available(queue) <= 1) |
153 | goto exit_fail; | |
95ea3627 | 154 | |
b9740c23 DW |
155 | if (rt2x00mac_tx_rts_cts(rt2x00dev, queue, skb)) |
156 | goto exit_fail; | |
1230cb83 ID |
157 | } |
158 | ||
b9740c23 DW |
159 | if (rt2x00queue_write_tx_frame(queue, skb)) |
160 | goto exit_fail; | |
161 | ||
b869767b | 162 | if (rt2x00queue_threshold(queue)) |
e2530083 | 163 | ieee80211_stop_queue(rt2x00dev->hw, qid); |
95ea3627 | 164 | |
95ea3627 | 165 | return NETDEV_TX_OK; |
b9740c23 DW |
166 | |
167 | exit_fail: | |
168 | ieee80211_stop_queue(rt2x00dev->hw, qid); | |
169 | dev_kfree_skb_any(skb); | |
170 | return NETDEV_TX_OK; | |
95ea3627 ID |
171 | } |
172 | EXPORT_SYMBOL_GPL(rt2x00mac_tx); | |
173 | ||
174 | int rt2x00mac_start(struct ieee80211_hw *hw) | |
175 | { | |
176 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
95ea3627 | 177 | |
0262ab0d | 178 | if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags)) |
95ea3627 ID |
179 | return 0; |
180 | ||
e37ea213 | 181 | return rt2x00lib_start(rt2x00dev); |
95ea3627 ID |
182 | } |
183 | EXPORT_SYMBOL_GPL(rt2x00mac_start); | |
184 | ||
185 | void rt2x00mac_stop(struct ieee80211_hw *hw) | |
186 | { | |
187 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
188 | ||
0262ab0d | 189 | if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags)) |
066cb637 ID |
190 | return; |
191 | ||
e37ea213 | 192 | rt2x00lib_stop(rt2x00dev); |
95ea3627 ID |
193 | } |
194 | EXPORT_SYMBOL_GPL(rt2x00mac_stop); | |
195 | ||
196 | int rt2x00mac_add_interface(struct ieee80211_hw *hw, | |
197 | struct ieee80211_if_init_conf *conf) | |
198 | { | |
199 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
6bb40dd1 | 200 | struct rt2x00_intf *intf = vif_to_intf(conf->vif); |
e58c6aca | 201 | struct data_queue *queue = rt2x00queue_get_queue(rt2x00dev, QID_BEACON); |
6bb40dd1 ID |
202 | struct queue_entry *entry = NULL; |
203 | unsigned int i; | |
95ea3627 ID |
204 | |
205 | /* | |
6bb40dd1 ID |
206 | * Don't allow interfaces to be added |
207 | * the device has disappeared. | |
95ea3627 | 208 | */ |
0262ab0d ID |
209 | if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags) || |
210 | !test_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags)) | |
6bb40dd1 ID |
211 | return -ENODEV; |
212 | ||
0fc98039 ID |
213 | switch (conf->type) { |
214 | case IEEE80211_IF_TYPE_AP: | |
215 | /* | |
216 | * We don't support mixed combinations of | |
217 | * sta and ap interfaces. | |
218 | */ | |
219 | if (rt2x00dev->intf_sta_count) | |
220 | return -ENOBUFS; | |
221 | ||
222 | /* | |
223 | * Check if we exceeded the maximum amount | |
224 | * of supported interfaces. | |
225 | */ | |
226 | if (rt2x00dev->intf_ap_count >= rt2x00dev->ops->max_ap_intf) | |
227 | return -ENOBUFS; | |
228 | ||
229 | break; | |
230 | case IEEE80211_IF_TYPE_STA: | |
231 | case IEEE80211_IF_TYPE_IBSS: | |
232 | /* | |
233 | * We don't support mixed combinations of | |
234 | * sta and ap interfaces. | |
235 | */ | |
236 | if (rt2x00dev->intf_ap_count) | |
237 | return -ENOBUFS; | |
238 | ||
239 | /* | |
240 | * Check if we exceeded the maximum amount | |
241 | * of supported interfaces. | |
242 | */ | |
243 | if (rt2x00dev->intf_sta_count >= rt2x00dev->ops->max_sta_intf) | |
244 | return -ENOBUFS; | |
245 | ||
246 | break; | |
247 | default: | |
248 | return -EINVAL; | |
249 | } | |
6bb40dd1 ID |
250 | |
251 | /* | |
252 | * Loop through all beacon queues to find a free | |
253 | * entry. Since there are as much beacon entries | |
254 | * as the maximum interfaces, this search shouldn't | |
255 | * fail. | |
256 | */ | |
257 | for (i = 0; i < queue->limit; i++) { | |
258 | entry = &queue->entries[i]; | |
0262ab0d | 259 | if (!test_and_set_bit(ENTRY_BCN_ASSIGNED, &entry->flags)) |
6bb40dd1 ID |
260 | break; |
261 | } | |
262 | ||
263 | if (unlikely(i == queue->limit)) | |
95ea3627 ID |
264 | return -ENOBUFS; |
265 | ||
6bb40dd1 ID |
266 | /* |
267 | * We are now absolutely sure the interface can be created, | |
268 | * increase interface count and start initialization. | |
269 | */ | |
270 | ||
271 | if (conf->type == IEEE80211_IF_TYPE_AP) | |
272 | rt2x00dev->intf_ap_count++; | |
273 | else | |
274 | rt2x00dev->intf_sta_count++; | |
275 | ||
276 | spin_lock_init(&intf->lock); | |
d4764b29 | 277 | spin_lock_init(&intf->seqlock); |
6bb40dd1 ID |
278 | intf->beacon = entry; |
279 | ||
4150c572 JB |
280 | if (conf->type == IEEE80211_IF_TYPE_AP) |
281 | memcpy(&intf->bssid, conf->mac_addr, ETH_ALEN); | |
282 | memcpy(&intf->mac, conf->mac_addr, ETH_ALEN); | |
95ea3627 ID |
283 | |
284 | /* | |
95ea3627 | 285 | * The MAC adddress must be configured after the device |
4150c572 JB |
286 | * has been initialized. Otherwise the device can reset |
287 | * the MAC registers. | |
95ea3627 | 288 | */ |
6bb40dd1 | 289 | rt2x00lib_config_intf(rt2x00dev, intf, conf->type, intf->mac, NULL); |
95ea3627 | 290 | |
e0b005fa ID |
291 | /* |
292 | * Some filters depend on the current working mode. We can force | |
293 | * an update during the next configure_filter() run by mac80211 by | |
294 | * resetting the current packet_filter state. | |
295 | */ | |
296 | rt2x00dev->packet_filter = 0; | |
297 | ||
95ea3627 ID |
298 | return 0; |
299 | } | |
300 | EXPORT_SYMBOL_GPL(rt2x00mac_add_interface); | |
301 | ||
302 | void rt2x00mac_remove_interface(struct ieee80211_hw *hw, | |
303 | struct ieee80211_if_init_conf *conf) | |
304 | { | |
305 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
6bb40dd1 | 306 | struct rt2x00_intf *intf = vif_to_intf(conf->vif); |
95ea3627 ID |
307 | |
308 | /* | |
066cb637 ID |
309 | * Don't allow interfaces to be remove while |
310 | * either the device has disappeared or when | |
311 | * no interface is present. | |
95ea3627 | 312 | */ |
0262ab0d | 313 | if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags) || |
6bb40dd1 ID |
314 | (conf->type == IEEE80211_IF_TYPE_AP && !rt2x00dev->intf_ap_count) || |
315 | (conf->type != IEEE80211_IF_TYPE_AP && !rt2x00dev->intf_sta_count)) | |
95ea3627 ID |
316 | return; |
317 | ||
6bb40dd1 ID |
318 | if (conf->type == IEEE80211_IF_TYPE_AP) |
319 | rt2x00dev->intf_ap_count--; | |
320 | else | |
321 | rt2x00dev->intf_sta_count--; | |
322 | ||
323 | /* | |
324 | * Release beacon entry so it is available for | |
325 | * new interfaces again. | |
326 | */ | |
0262ab0d | 327 | clear_bit(ENTRY_BCN_ASSIGNED, &intf->beacon->flags); |
95ea3627 ID |
328 | |
329 | /* | |
330 | * Make sure the bssid and mac address registers | |
331 | * are cleared to prevent false ACKing of frames. | |
332 | */ | |
6bb40dd1 ID |
333 | rt2x00lib_config_intf(rt2x00dev, intf, |
334 | IEEE80211_IF_TYPE_INVALID, NULL, NULL); | |
95ea3627 ID |
335 | } |
336 | EXPORT_SYMBOL_GPL(rt2x00mac_remove_interface); | |
337 | ||
338 | int rt2x00mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf) | |
339 | { | |
340 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
2575c11d MN |
341 | int radio_on; |
342 | int status; | |
95ea3627 ID |
343 | |
344 | /* | |
066cb637 ID |
345 | * Mac80211 might be calling this function while we are trying |
346 | * to remove the device or perhaps suspending it. | |
95ea3627 | 347 | */ |
0262ab0d | 348 | if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags)) |
95ea3627 ID |
349 | return 0; |
350 | ||
351 | /* | |
2575c11d MN |
352 | * Only change device state when the radio is enabled. It does not |
353 | * matter what parameters we have configured when the radio is disabled | |
354 | * because we won't be able to send or receive anyway. Also note that | |
355 | * some configuration parameters (e.g. channel and antenna values) can | |
356 | * only be set when the radio is enabled. | |
95ea3627 | 357 | */ |
2575c11d MN |
358 | radio_on = test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags); |
359 | if (conf->radio_enabled) { | |
360 | /* For programming the values, we have to turn RX off */ | |
361 | rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_OFF); | |
95ea3627 | 362 | |
2575c11d MN |
363 | /* Enable the radio */ |
364 | status = rt2x00lib_enable_radio(rt2x00dev); | |
365 | if (unlikely(status)) | |
366 | return status; | |
74c0ee9b | 367 | |
2575c11d MN |
368 | /* |
369 | * When we've just turned on the radio, we want to reprogram | |
370 | * everything to ensure a consistent state | |
371 | */ | |
372 | rt2x00lib_config(rt2x00dev, conf, !radio_on); | |
95ea3627 | 373 | |
2575c11d | 374 | /* Turn RX back on */ |
5cbf830e | 375 | rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_ON); |
2575c11d MN |
376 | } else { |
377 | /* Disable the radio */ | |
378 | rt2x00lib_disable_radio(rt2x00dev); | |
379 | } | |
95ea3627 ID |
380 | |
381 | return 0; | |
382 | } | |
383 | EXPORT_SYMBOL_GPL(rt2x00mac_config); | |
384 | ||
32bfd35d JB |
385 | int rt2x00mac_config_interface(struct ieee80211_hw *hw, |
386 | struct ieee80211_vif *vif, | |
95ea3627 ID |
387 | struct ieee80211_if_conf *conf) |
388 | { | |
389 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
6bb40dd1 | 390 | struct rt2x00_intf *intf = vif_to_intf(vif); |
bd88a781 ID |
391 | int update_bssid = 0; |
392 | int status = 0; | |
95ea3627 ID |
393 | |
394 | /* | |
066cb637 ID |
395 | * Mac80211 might be calling this function while we are trying |
396 | * to remove the device or perhaps suspending it. | |
95ea3627 | 397 | */ |
0262ab0d | 398 | if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags)) |
95ea3627 ID |
399 | return 0; |
400 | ||
6bb40dd1 | 401 | spin_lock(&intf->lock); |
95ea3627 ID |
402 | |
403 | /* | |
9d139c81 JB |
404 | * conf->bssid can be NULL if coming from the internal |
405 | * beacon update routine. | |
95ea3627 | 406 | */ |
bd88a781 ID |
407 | if (conf->changed & IEEE80211_IFCC_BSSID && conf->bssid) { |
408 | update_bssid = 1; | |
95ea3627 | 409 | memcpy(&intf->bssid, conf->bssid, ETH_ALEN); |
bd88a781 | 410 | } |
6bb40dd1 ID |
411 | |
412 | spin_unlock(&intf->lock); | |
95ea3627 | 413 | |
e44df929 ID |
414 | /* |
415 | * Call rt2x00_config_intf() outside of the spinlock context since | |
416 | * the call will sleep for USB drivers. By using the ieee80211_if_conf | |
417 | * values as arguments we make keep access to rt2x00_intf thread safe | |
418 | * even without the lock. | |
419 | */ | |
bd88a781 ID |
420 | rt2x00lib_config_intf(rt2x00dev, intf, vif->type, NULL, |
421 | update_bssid ? conf->bssid : NULL); | |
e44df929 | 422 | |
95ea3627 | 423 | /* |
bd88a781 | 424 | * Update the beacon. |
95ea3627 | 425 | */ |
bd88a781 ID |
426 | if (conf->changed & IEEE80211_IFCC_BEACON) |
427 | status = rt2x00queue_update_beacon(rt2x00dev, vif); | |
95ea3627 ID |
428 | |
429 | return status; | |
430 | } | |
431 | EXPORT_SYMBOL_GPL(rt2x00mac_config_interface); | |
432 | ||
3a643d24 ID |
433 | void rt2x00mac_configure_filter(struct ieee80211_hw *hw, |
434 | unsigned int changed_flags, | |
435 | unsigned int *total_flags, | |
436 | int mc_count, struct dev_addr_list *mc_list) | |
437 | { | |
438 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
439 | ||
440 | /* | |
441 | * Mask off any flags we are going to ignore | |
442 | * from the total_flags field. | |
443 | */ | |
444 | *total_flags &= | |
445 | FIF_ALLMULTI | | |
446 | FIF_FCSFAIL | | |
447 | FIF_PLCPFAIL | | |
448 | FIF_CONTROL | | |
449 | FIF_OTHER_BSS | | |
450 | FIF_PROMISC_IN_BSS; | |
451 | ||
452 | /* | |
453 | * Apply some rules to the filters: | |
454 | * - Some filters imply different filters to be set. | |
455 | * - Some things we can't filter out at all. | |
456 | * - Multicast filter seems to kill broadcast traffic so never use it. | |
457 | */ | |
458 | *total_flags |= FIF_ALLMULTI; | |
459 | if (*total_flags & FIF_OTHER_BSS || | |
460 | *total_flags & FIF_PROMISC_IN_BSS) | |
461 | *total_flags |= FIF_PROMISC_IN_BSS | FIF_OTHER_BSS; | |
462 | ||
463 | /* | |
464 | * Check if there is any work left for us. | |
465 | */ | |
466 | if (rt2x00dev->packet_filter == *total_flags) | |
467 | return; | |
468 | rt2x00dev->packet_filter = *total_flags; | |
469 | ||
470 | if (!test_bit(DRIVER_REQUIRE_SCHEDULED, &rt2x00dev->flags)) | |
3a643d24 | 471 | rt2x00dev->ops->lib->config_filter(rt2x00dev, *total_flags); |
bc5213f4 | 472 | else |
8e260c22 | 473 | queue_work(rt2x00dev->hw->workqueue, &rt2x00dev->filter_work); |
3a643d24 ID |
474 | } |
475 | EXPORT_SYMBOL_GPL(rt2x00mac_configure_filter); | |
476 | ||
2bb057d0 ID |
477 | #ifdef CONFIG_RT2X00_LIB_CRYPTO |
478 | int rt2x00mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, | |
479 | const u8 *local_address, const u8 *address, | |
480 | struct ieee80211_key_conf *key) | |
481 | { | |
482 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
483 | int (*set_key) (struct rt2x00_dev *rt2x00dev, | |
484 | struct rt2x00lib_crypto *crypto, | |
485 | struct ieee80211_key_conf *key); | |
486 | struct rt2x00lib_crypto crypto; | |
487 | ||
488 | if (!test_bit(CONFIG_SUPPORT_HW_CRYPTO, &rt2x00dev->flags)) | |
489 | return -EOPNOTSUPP; | |
490 | else if (key->keylen > 32) | |
491 | return -ENOSPC; | |
492 | ||
493 | memset(&crypto, 0, sizeof(crypto)); | |
494 | ||
495 | /* | |
496 | * When in STA mode, bssidx is always 0 otherwise local_address[5] | |
497 | * contains the bss number, see BSS_ID_MASK comments for details. | |
498 | */ | |
499 | if (rt2x00dev->intf_sta_count) | |
500 | crypto.bssidx = 0; | |
501 | else | |
502 | crypto.bssidx = | |
503 | local_address[5] & (rt2x00dev->ops->max_ap_intf - 1); | |
504 | ||
505 | crypto.cipher = rt2x00crypto_key_to_cipher(key); | |
506 | if (crypto.cipher == CIPHER_NONE) | |
507 | return -EOPNOTSUPP; | |
508 | ||
509 | crypto.cmd = cmd; | |
510 | crypto.address = address; | |
511 | ||
512 | if (crypto.cipher == CIPHER_TKIP) { | |
513 | if (key->keylen > NL80211_TKIP_DATA_OFFSET_ENCR_KEY) | |
514 | memcpy(&crypto.key, | |
515 | &key->key[NL80211_TKIP_DATA_OFFSET_ENCR_KEY], | |
516 | sizeof(crypto.key)); | |
517 | ||
518 | if (key->keylen > NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY) | |
519 | memcpy(&crypto.tx_mic, | |
520 | &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY], | |
521 | sizeof(crypto.tx_mic)); | |
522 | ||
523 | if (key->keylen > NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY) | |
524 | memcpy(&crypto.rx_mic, | |
525 | &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY], | |
526 | sizeof(crypto.rx_mic)); | |
527 | } else | |
528 | memcpy(&crypto.key, &key->key[0], key->keylen); | |
529 | ||
530 | /* | |
531 | * Each BSS has a maximum of 4 shared keys. | |
532 | * Shared key index values: | |
533 | * 0) BSS0 key0 | |
534 | * 1) BSS0 key1 | |
535 | * ... | |
536 | * 4) BSS1 key0 | |
537 | * ... | |
538 | * 8) BSS2 key0 | |
539 | * ... | |
540 | * Both pairwise as shared key indeces are determined by | |
541 | * driver. This is required because the hardware requires | |
542 | * keys to be assigned in correct order (When key 1 is | |
543 | * provided but key 0 is not, then the key is not found | |
544 | * by the hardware during RX). | |
545 | */ | |
546 | key->hw_key_idx = 0; | |
547 | ||
548 | if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) | |
549 | set_key = rt2x00dev->ops->lib->config_pairwise_key; | |
550 | else | |
551 | set_key = rt2x00dev->ops->lib->config_shared_key; | |
552 | ||
553 | if (!set_key) | |
554 | return -EOPNOTSUPP; | |
555 | ||
556 | return set_key(rt2x00dev, &crypto, key); | |
557 | } | |
558 | EXPORT_SYMBOL_GPL(rt2x00mac_set_key); | |
559 | #endif /* CONFIG_RT2X00_LIB_CRYPTO */ | |
560 | ||
95ea3627 ID |
561 | int rt2x00mac_get_stats(struct ieee80211_hw *hw, |
562 | struct ieee80211_low_level_stats *stats) | |
563 | { | |
564 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
565 | ||
566 | /* | |
567 | * The dot11ACKFailureCount, dot11RTSFailureCount and | |
568 | * dot11RTSSuccessCount are updated in interrupt time. | |
569 | * dot11FCSErrorCount is updated in the link tuner. | |
570 | */ | |
571 | memcpy(stats, &rt2x00dev->low_level_stats, sizeof(*stats)); | |
572 | ||
573 | return 0; | |
574 | } | |
575 | EXPORT_SYMBOL_GPL(rt2x00mac_get_stats); | |
576 | ||
577 | int rt2x00mac_get_tx_stats(struct ieee80211_hw *hw, | |
578 | struct ieee80211_tx_queue_stats *stats) | |
579 | { | |
580 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
581 | unsigned int i; | |
582 | ||
61448f88 | 583 | for (i = 0; i < rt2x00dev->ops->tx_queues; i++) { |
57ffc589 JB |
584 | stats[i].len = rt2x00dev->tx[i].length; |
585 | stats[i].limit = rt2x00dev->tx[i].limit; | |
586 | stats[i].count = rt2x00dev->tx[i].count; | |
181d6902 | 587 | } |
95ea3627 ID |
588 | |
589 | return 0; | |
590 | } | |
591 | EXPORT_SYMBOL_GPL(rt2x00mac_get_tx_stats); | |
592 | ||
471b3efd JB |
593 | void rt2x00mac_bss_info_changed(struct ieee80211_hw *hw, |
594 | struct ieee80211_vif *vif, | |
595 | struct ieee80211_bss_conf *bss_conf, | |
596 | u32 changes) | |
5c58ee51 ID |
597 | { |
598 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
6bb40dd1 | 599 | struct rt2x00_intf *intf = vif_to_intf(vif); |
3a643d24 | 600 | unsigned int delayed = 0; |
5c58ee51 ID |
601 | |
602 | /* | |
6bb40dd1 ID |
603 | * When the association status has changed we must reset the link |
604 | * tuner counter. This is because some drivers determine if they | |
605 | * should perform link tuning based on the number of seconds | |
606 | * while associated or not associated. | |
5c58ee51 | 607 | */ |
6bb40dd1 ID |
608 | if (changes & BSS_CHANGED_ASSOC) { |
609 | rt2x00dev->link.count = 0; | |
5c58ee51 | 610 | |
6bb40dd1 ID |
611 | if (bss_conf->assoc) |
612 | rt2x00dev->intf_associated++; | |
613 | else | |
614 | rt2x00dev->intf_associated--; | |
a2e1d52a ID |
615 | |
616 | if (!test_bit(DRIVER_REQUIRE_SCHEDULED, &rt2x00dev->flags)) | |
617 | rt2x00leds_led_assoc(rt2x00dev, | |
618 | !!rt2x00dev->intf_associated); | |
619 | else | |
620 | delayed |= DELAYED_LED_ASSOC; | |
6bb40dd1 | 621 | } |
5c58ee51 | 622 | |
6bb40dd1 | 623 | /* |
72810379 ID |
624 | * When the erp information has changed, we should perform |
625 | * additional configuration steps. For all other changes we are done. | |
6bb40dd1 | 626 | */ |
e360c4cb | 627 | if (changes & (BSS_CHANGED_ERP_PREAMBLE | BSS_CHANGED_ERP_CTS_PROT)) { |
3a643d24 ID |
628 | if (!test_bit(DRIVER_REQUIRE_SCHEDULED, &rt2x00dev->flags)) |
629 | rt2x00lib_config_erp(rt2x00dev, intf, bss_conf); | |
630 | else | |
631 | delayed |= DELAYED_CONFIG_ERP; | |
632 | } | |
5c58ee51 | 633 | |
72810379 ID |
634 | spin_lock(&intf->lock); |
635 | memcpy(&intf->conf, bss_conf, sizeof(*bss_conf)); | |
3a643d24 ID |
636 | if (delayed) { |
637 | intf->delayed_flags |= delayed; | |
8e260c22 | 638 | schedule_work(&rt2x00dev->intf_work); |
3a643d24 | 639 | } |
72810379 | 640 | spin_unlock(&intf->lock); |
5c58ee51 | 641 | } |
471b3efd | 642 | EXPORT_SYMBOL_GPL(rt2x00mac_bss_info_changed); |
5c58ee51 | 643 | |
e100bb64 | 644 | int rt2x00mac_conf_tx(struct ieee80211_hw *hw, u16 queue_idx, |
95ea3627 ID |
645 | const struct ieee80211_tx_queue_params *params) |
646 | { | |
647 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
181d6902 | 648 | struct data_queue *queue; |
95ea3627 | 649 | |
181d6902 ID |
650 | queue = rt2x00queue_get_queue(rt2x00dev, queue_idx); |
651 | if (unlikely(!queue)) | |
95ea3627 ID |
652 | return -EINVAL; |
653 | ||
654 | /* | |
655 | * The passed variables are stored as real value ((2^n)-1). | |
656 | * Ralink registers require to know the bit number 'n'. | |
657 | */ | |
3b3618ad | 658 | if (params->cw_min > 0) |
181d6902 | 659 | queue->cw_min = fls(params->cw_min); |
95ea3627 | 660 | else |
181d6902 | 661 | queue->cw_min = 5; /* cw_min: 2^5 = 32. */ |
95ea3627 | 662 | |
3b3618ad | 663 | if (params->cw_max > 0) |
181d6902 | 664 | queue->cw_max = fls(params->cw_max); |
95ea3627 | 665 | else |
181d6902 | 666 | queue->cw_max = 10; /* cw_min: 2^10 = 1024. */ |
95ea3627 | 667 | |
0b57664c | 668 | queue->aifs = params->aifs; |
2af0a570 | 669 | queue->txop = params->txop; |
95ea3627 ID |
670 | |
671 | INFO(rt2x00dev, | |
2af0a570 ID |
672 | "Configured TX queue %d - CWmin: %d, CWmax: %d, Aifs: %d, TXop: %d.\n", |
673 | queue_idx, queue->cw_min, queue->cw_max, queue->aifs, queue->txop); | |
95ea3627 ID |
674 | |
675 | return 0; | |
676 | } | |
677 | EXPORT_SYMBOL_GPL(rt2x00mac_conf_tx); |