Commit | Line | Data |
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95ea3627 | 1 | /* |
4e54c711 | 2 | Copyright (C) 2004 - 2009 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 | |
e6a9854b | 42 | if (tx_info->control.rates[0].flags & IEEE80211_TX_RC_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); | |
e6a9854b JB |
67 | rts_info->control.rates[0].flags &= ~IEEE80211_TX_RC_USE_RTS_CTS; |
68 | rts_info->control.rates[0].flags &= ~IEEE80211_TX_RC_USE_CTS_PROTECT; | |
e039fa4a JB |
69 | rts_info->flags &= ~IEEE80211_TX_CTL_REQ_TX_STATUS; |
70 | ||
e6a9854b | 71 | if (tx_info->control.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT) |
e039fa4a JB |
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 | */ | |
7b40982e | 82 | data_length += rt2x00crypto_tx_overhead(rt2x00dev, skb); |
2bb057d0 | 83 | |
e6a9854b | 84 | if (tx_info->control.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT) |
e039fa4a | 85 | ieee80211_ctstoself_get(rt2x00dev->hw, tx_info->control.vif, |
2bb057d0 | 86 | frag_skb->data, data_length, tx_info, |
95ea3627 ID |
87 | (struct ieee80211_cts *)(skb->data)); |
88 | else | |
e039fa4a | 89 | ieee80211_rts_get(rt2x00dev->hw, tx_info->control.vif, |
2bb057d0 | 90 | frag_skb->data, data_length, tx_info, |
95ea3627 ID |
91 | (struct ieee80211_rts *)(skb->data)); |
92 | ||
b9740c23 DW |
93 | retval = rt2x00queue_write_tx_frame(queue, skb); |
94 | if (retval) { | |
e7087a82 | 95 | dev_kfree_skb_any(skb); |
95ea3627 | 96 | WARNING(rt2x00dev, "Failed to send RTS/CTS frame.\n"); |
95ea3627 ID |
97 | } |
98 | ||
b9740c23 | 99 | return retval; |
95ea3627 ID |
100 | } |
101 | ||
e039fa4a | 102 | int rt2x00mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb) |
95ea3627 ID |
103 | { |
104 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
e039fa4a | 105 | struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb); |
95ea3627 | 106 | struct ieee80211_hdr *ieee80211hdr = (struct ieee80211_hdr *)skb->data; |
e2530083 | 107 | enum data_queue_qid qid = skb_get_queue_mapping(skb); |
181d6902 | 108 | struct data_queue *queue; |
95ea3627 ID |
109 | u16 frame_control; |
110 | ||
066cb637 ID |
111 | /* |
112 | * Mac80211 might be calling this function while we are trying | |
113 | * to remove the device or perhaps suspending it. | |
114 | * Note that we can only stop the TX queues inside the TX path | |
115 | * due to possible race conditions in mac80211. | |
116 | */ | |
0262ab0d | 117 | if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags)) |
b9740c23 | 118 | goto exit_fail; |
066cb637 | 119 | |
95ea3627 | 120 | /* |
181d6902 | 121 | * Determine which queue to put packet on. |
95ea3627 | 122 | */ |
e039fa4a | 123 | if (tx_info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM && |
e4030a2f | 124 | test_bit(DRIVER_REQUIRE_ATIM_QUEUE, &rt2x00dev->flags)) |
e58c6aca | 125 | queue = rt2x00queue_get_queue(rt2x00dev, QID_ATIM); |
e4030a2f | 126 | else |
e58c6aca | 127 | queue = rt2x00queue_get_queue(rt2x00dev, qid); |
181d6902 | 128 | if (unlikely(!queue)) { |
95ea3627 ID |
129 | ERROR(rt2x00dev, |
130 | "Attempt to send packet over invalid queue %d.\n" | |
e58c6aca | 131 | "Please file bug report to %s.\n", qid, DRV_PROJECT); |
0e3de998 | 132 | goto exit_fail; |
95ea3627 ID |
133 | } |
134 | ||
135 | /* | |
772a249d ID |
136 | * If CTS/RTS is required. create and queue that frame first. |
137 | * Make sure we have at least enough entries available to send | |
138 | * this CTS/RTS frame as well as the data frame. | |
2d9ccf84 ID |
139 | * Note that when the driver has set the set_rts_threshold() |
140 | * callback function it doesn't need software generation of | |
772a249d | 141 | * either RTS or CTS-to-self frame and handles everything |
2d9ccf84 | 142 | * inside the hardware. |
95ea3627 ID |
143 | */ |
144 | frame_control = le16_to_cpu(ieee80211hdr->frame_control); | |
e6a9854b JB |
145 | if ((tx_info->control.rates[0].flags & (IEEE80211_TX_RC_USE_RTS_CTS | |
146 | IEEE80211_TX_RC_USE_CTS_PROTECT)) && | |
2d9ccf84 | 147 | !rt2x00dev->ops->hw->set_rts_threshold) { |
b9740c23 DW |
148 | if (rt2x00queue_available(queue) <= 1) |
149 | goto exit_fail; | |
95ea3627 | 150 | |
b9740c23 DW |
151 | if (rt2x00mac_tx_rts_cts(rt2x00dev, queue, skb)) |
152 | goto exit_fail; | |
1230cb83 ID |
153 | } |
154 | ||
b9740c23 DW |
155 | if (rt2x00queue_write_tx_frame(queue, skb)) |
156 | goto exit_fail; | |
157 | ||
b869767b | 158 | if (rt2x00queue_threshold(queue)) |
e2530083 | 159 | ieee80211_stop_queue(rt2x00dev->hw, qid); |
95ea3627 | 160 | |
95ea3627 | 161 | return NETDEV_TX_OK; |
b9740c23 DW |
162 | |
163 | exit_fail: | |
164 | ieee80211_stop_queue(rt2x00dev->hw, qid); | |
165 | dev_kfree_skb_any(skb); | |
166 | return NETDEV_TX_OK; | |
95ea3627 ID |
167 | } |
168 | EXPORT_SYMBOL_GPL(rt2x00mac_tx); | |
169 | ||
170 | int rt2x00mac_start(struct ieee80211_hw *hw) | |
171 | { | |
172 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
95ea3627 | 173 | |
0262ab0d | 174 | if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags)) |
95ea3627 ID |
175 | return 0; |
176 | ||
e37ea213 | 177 | return rt2x00lib_start(rt2x00dev); |
95ea3627 ID |
178 | } |
179 | EXPORT_SYMBOL_GPL(rt2x00mac_start); | |
180 | ||
181 | void rt2x00mac_stop(struct ieee80211_hw *hw) | |
182 | { | |
183 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
184 | ||
0262ab0d | 185 | if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags)) |
066cb637 ID |
186 | return; |
187 | ||
e37ea213 | 188 | rt2x00lib_stop(rt2x00dev); |
95ea3627 ID |
189 | } |
190 | EXPORT_SYMBOL_GPL(rt2x00mac_stop); | |
191 | ||
192 | int rt2x00mac_add_interface(struct ieee80211_hw *hw, | |
193 | struct ieee80211_if_init_conf *conf) | |
194 | { | |
195 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
6bb40dd1 | 196 | struct rt2x00_intf *intf = vif_to_intf(conf->vif); |
e58c6aca | 197 | struct data_queue *queue = rt2x00queue_get_queue(rt2x00dev, QID_BEACON); |
6bb40dd1 ID |
198 | struct queue_entry *entry = NULL; |
199 | unsigned int i; | |
95ea3627 ID |
200 | |
201 | /* | |
6bb40dd1 ID |
202 | * Don't allow interfaces to be added |
203 | * the device has disappeared. | |
95ea3627 | 204 | */ |
0262ab0d ID |
205 | if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags) || |
206 | !test_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags)) | |
6bb40dd1 ID |
207 | return -ENODEV; |
208 | ||
0fc98039 | 209 | switch (conf->type) { |
05c914fe | 210 | case NL80211_IFTYPE_AP: |
0fc98039 ID |
211 | /* |
212 | * We don't support mixed combinations of | |
213 | * sta and ap interfaces. | |
214 | */ | |
215 | if (rt2x00dev->intf_sta_count) | |
216 | return -ENOBUFS; | |
217 | ||
218 | /* | |
219 | * Check if we exceeded the maximum amount | |
220 | * of supported interfaces. | |
221 | */ | |
222 | if (rt2x00dev->intf_ap_count >= rt2x00dev->ops->max_ap_intf) | |
223 | return -ENOBUFS; | |
224 | ||
225 | break; | |
05c914fe JB |
226 | case NL80211_IFTYPE_STATION: |
227 | case NL80211_IFTYPE_ADHOC: | |
a07dbea2 | 228 | case NL80211_IFTYPE_MESH_POINT: |
ce292a64 | 229 | case NL80211_IFTYPE_WDS: |
0fc98039 ID |
230 | /* |
231 | * We don't support mixed combinations of | |
232 | * sta and ap interfaces. | |
233 | */ | |
234 | if (rt2x00dev->intf_ap_count) | |
235 | return -ENOBUFS; | |
236 | ||
237 | /* | |
238 | * Check if we exceeded the maximum amount | |
239 | * of supported interfaces. | |
240 | */ | |
241 | if (rt2x00dev->intf_sta_count >= rt2x00dev->ops->max_sta_intf) | |
242 | return -ENOBUFS; | |
243 | ||
244 | break; | |
245 | default: | |
246 | return -EINVAL; | |
247 | } | |
6bb40dd1 ID |
248 | |
249 | /* | |
250 | * Loop through all beacon queues to find a free | |
251 | * entry. Since there are as much beacon entries | |
252 | * as the maximum interfaces, this search shouldn't | |
253 | * fail. | |
254 | */ | |
255 | for (i = 0; i < queue->limit; i++) { | |
256 | entry = &queue->entries[i]; | |
0262ab0d | 257 | if (!test_and_set_bit(ENTRY_BCN_ASSIGNED, &entry->flags)) |
6bb40dd1 ID |
258 | break; |
259 | } | |
260 | ||
261 | if (unlikely(i == queue->limit)) | |
95ea3627 ID |
262 | return -ENOBUFS; |
263 | ||
6bb40dd1 ID |
264 | /* |
265 | * We are now absolutely sure the interface can be created, | |
266 | * increase interface count and start initialization. | |
267 | */ | |
268 | ||
05c914fe | 269 | if (conf->type == NL80211_IFTYPE_AP) |
6bb40dd1 ID |
270 | rt2x00dev->intf_ap_count++; |
271 | else | |
272 | rt2x00dev->intf_sta_count++; | |
273 | ||
274 | spin_lock_init(&intf->lock); | |
d4764b29 | 275 | spin_lock_init(&intf->seqlock); |
6bb40dd1 ID |
276 | intf->beacon = entry; |
277 | ||
05c914fe | 278 | if (conf->type == NL80211_IFTYPE_AP) |
4150c572 JB |
279 | memcpy(&intf->bssid, conf->mac_addr, ETH_ALEN); |
280 | memcpy(&intf->mac, conf->mac_addr, ETH_ALEN); | |
95ea3627 ID |
281 | |
282 | /* | |
95ea3627 | 283 | * The MAC adddress must be configured after the device |
4150c572 JB |
284 | * has been initialized. Otherwise the device can reset |
285 | * the MAC registers. | |
95ea3627 | 286 | */ |
6bb40dd1 | 287 | rt2x00lib_config_intf(rt2x00dev, intf, conf->type, intf->mac, NULL); |
95ea3627 | 288 | |
e0b005fa ID |
289 | /* |
290 | * Some filters depend on the current working mode. We can force | |
291 | * an update during the next configure_filter() run by mac80211 by | |
292 | * resetting the current packet_filter state. | |
293 | */ | |
294 | rt2x00dev->packet_filter = 0; | |
295 | ||
95ea3627 ID |
296 | return 0; |
297 | } | |
298 | EXPORT_SYMBOL_GPL(rt2x00mac_add_interface); | |
299 | ||
300 | void rt2x00mac_remove_interface(struct ieee80211_hw *hw, | |
301 | struct ieee80211_if_init_conf *conf) | |
302 | { | |
303 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
6bb40dd1 | 304 | struct rt2x00_intf *intf = vif_to_intf(conf->vif); |
95ea3627 ID |
305 | |
306 | /* | |
066cb637 ID |
307 | * Don't allow interfaces to be remove while |
308 | * either the device has disappeared or when | |
309 | * no interface is present. | |
95ea3627 | 310 | */ |
0262ab0d | 311 | if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags) || |
05c914fe JB |
312 | (conf->type == NL80211_IFTYPE_AP && !rt2x00dev->intf_ap_count) || |
313 | (conf->type != NL80211_IFTYPE_AP && !rt2x00dev->intf_sta_count)) | |
95ea3627 ID |
314 | return; |
315 | ||
05c914fe | 316 | if (conf->type == NL80211_IFTYPE_AP) |
6bb40dd1 ID |
317 | rt2x00dev->intf_ap_count--; |
318 | else | |
319 | rt2x00dev->intf_sta_count--; | |
320 | ||
321 | /* | |
322 | * Release beacon entry so it is available for | |
323 | * new interfaces again. | |
324 | */ | |
0262ab0d | 325 | clear_bit(ENTRY_BCN_ASSIGNED, &intf->beacon->flags); |
95ea3627 ID |
326 | |
327 | /* | |
328 | * Make sure the bssid and mac address registers | |
329 | * are cleared to prevent false ACKing of frames. | |
330 | */ | |
6bb40dd1 | 331 | rt2x00lib_config_intf(rt2x00dev, intf, |
05c914fe | 332 | NL80211_IFTYPE_UNSPECIFIED, NULL, NULL); |
95ea3627 ID |
333 | } |
334 | EXPORT_SYMBOL_GPL(rt2x00mac_remove_interface); | |
335 | ||
e8975581 | 336 | int rt2x00mac_config(struct ieee80211_hw *hw, u32 changed) |
95ea3627 ID |
337 | { |
338 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
e8975581 | 339 | struct ieee80211_conf *conf = &hw->conf; |
2575c11d | 340 | int status; |
95ea3627 ID |
341 | |
342 | /* | |
066cb637 ID |
343 | * Mac80211 might be calling this function while we are trying |
344 | * to remove the device or perhaps suspending it. | |
95ea3627 | 345 | */ |
0262ab0d | 346 | if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags)) |
95ea3627 ID |
347 | return 0; |
348 | ||
349 | /* | |
2575c11d MN |
350 | * Only change device state when the radio is enabled. It does not |
351 | * matter what parameters we have configured when the radio is disabled | |
352 | * because we won't be able to send or receive anyway. Also note that | |
353 | * some configuration parameters (e.g. channel and antenna values) can | |
354 | * only be set when the radio is enabled. | |
95ea3627 | 355 | */ |
2575c11d MN |
356 | if (conf->radio_enabled) { |
357 | /* For programming the values, we have to turn RX off */ | |
358 | rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_OFF); | |
95ea3627 | 359 | |
2575c11d MN |
360 | /* Enable the radio */ |
361 | status = rt2x00lib_enable_radio(rt2x00dev); | |
362 | if (unlikely(status)) | |
363 | return status; | |
74c0ee9b | 364 | |
2575c11d MN |
365 | /* |
366 | * When we've just turned on the radio, we want to reprogram | |
367 | * everything to ensure a consistent state | |
368 | */ | |
e4ea1c40 | 369 | rt2x00lib_config(rt2x00dev, conf, changed); |
95ea3627 | 370 | |
6d64360a ID |
371 | /* |
372 | * The radio was enabled, configure the antenna to the | |
373 | * default settings, the link tuner will later start | |
374 | * continue configuring the antenna based on the software | |
375 | * diversity. But for non-diversity configurations, we need | |
376 | * to have configured the correct state now. | |
377 | */ | |
378 | if (changed & IEEE80211_CONF_CHANGE_RADIO_ENABLED) | |
379 | rt2x00lib_config_antenna(rt2x00dev, | |
380 | &rt2x00dev->default_ant); | |
381 | ||
2575c11d | 382 | /* Turn RX back on */ |
5cbf830e | 383 | rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_ON); |
2575c11d MN |
384 | } else { |
385 | /* Disable the radio */ | |
386 | rt2x00lib_disable_radio(rt2x00dev); | |
387 | } | |
95ea3627 ID |
388 | |
389 | return 0; | |
390 | } | |
391 | EXPORT_SYMBOL_GPL(rt2x00mac_config); | |
392 | ||
32bfd35d JB |
393 | int rt2x00mac_config_interface(struct ieee80211_hw *hw, |
394 | struct ieee80211_vif *vif, | |
95ea3627 ID |
395 | struct ieee80211_if_conf *conf) |
396 | { | |
397 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
6bb40dd1 | 398 | struct rt2x00_intf *intf = vif_to_intf(vif); |
bd88a781 ID |
399 | int update_bssid = 0; |
400 | int status = 0; | |
95ea3627 ID |
401 | |
402 | /* | |
066cb637 ID |
403 | * Mac80211 might be calling this function while we are trying |
404 | * to remove the device or perhaps suspending it. | |
95ea3627 | 405 | */ |
0262ab0d | 406 | if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags)) |
95ea3627 ID |
407 | return 0; |
408 | ||
6bb40dd1 | 409 | spin_lock(&intf->lock); |
95ea3627 ID |
410 | |
411 | /* | |
9d139c81 JB |
412 | * conf->bssid can be NULL if coming from the internal |
413 | * beacon update routine. | |
95ea3627 | 414 | */ |
bd88a781 ID |
415 | if (conf->changed & IEEE80211_IFCC_BSSID && conf->bssid) { |
416 | update_bssid = 1; | |
95ea3627 | 417 | memcpy(&intf->bssid, conf->bssid, ETH_ALEN); |
bd88a781 | 418 | } |
6bb40dd1 ID |
419 | |
420 | spin_unlock(&intf->lock); | |
95ea3627 | 421 | |
e44df929 ID |
422 | /* |
423 | * Call rt2x00_config_intf() outside of the spinlock context since | |
424 | * the call will sleep for USB drivers. By using the ieee80211_if_conf | |
425 | * values as arguments we make keep access to rt2x00_intf thread safe | |
426 | * even without the lock. | |
427 | */ | |
bd88a781 ID |
428 | rt2x00lib_config_intf(rt2x00dev, intf, vif->type, NULL, |
429 | update_bssid ? conf->bssid : NULL); | |
e44df929 | 430 | |
95ea3627 | 431 | /* |
bd88a781 | 432 | * Update the beacon. |
95ea3627 | 433 | */ |
a2c9b652 ID |
434 | if (conf->changed & (IEEE80211_IFCC_BEACON | |
435 | IEEE80211_IFCC_BEACON_ENABLED)) | |
436 | status = rt2x00queue_update_beacon(rt2x00dev, vif, | |
437 | conf->enable_beacon); | |
95ea3627 ID |
438 | |
439 | return status; | |
440 | } | |
441 | EXPORT_SYMBOL_GPL(rt2x00mac_config_interface); | |
442 | ||
3a643d24 ID |
443 | void rt2x00mac_configure_filter(struct ieee80211_hw *hw, |
444 | unsigned int changed_flags, | |
445 | unsigned int *total_flags, | |
446 | int mc_count, struct dev_addr_list *mc_list) | |
447 | { | |
448 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
449 | ||
450 | /* | |
451 | * Mask off any flags we are going to ignore | |
452 | * from the total_flags field. | |
453 | */ | |
454 | *total_flags &= | |
455 | FIF_ALLMULTI | | |
456 | FIF_FCSFAIL | | |
457 | FIF_PLCPFAIL | | |
458 | FIF_CONTROL | | |
459 | FIF_OTHER_BSS | | |
460 | FIF_PROMISC_IN_BSS; | |
461 | ||
462 | /* | |
463 | * Apply some rules to the filters: | |
464 | * - Some filters imply different filters to be set. | |
465 | * - Some things we can't filter out at all. | |
466 | * - Multicast filter seems to kill broadcast traffic so never use it. | |
467 | */ | |
468 | *total_flags |= FIF_ALLMULTI; | |
469 | if (*total_flags & FIF_OTHER_BSS || | |
470 | *total_flags & FIF_PROMISC_IN_BSS) | |
471 | *total_flags |= FIF_PROMISC_IN_BSS | FIF_OTHER_BSS; | |
472 | ||
473 | /* | |
474 | * Check if there is any work left for us. | |
475 | */ | |
476 | if (rt2x00dev->packet_filter == *total_flags) | |
477 | return; | |
478 | rt2x00dev->packet_filter = *total_flags; | |
479 | ||
480 | if (!test_bit(DRIVER_REQUIRE_SCHEDULED, &rt2x00dev->flags)) | |
3a643d24 | 481 | rt2x00dev->ops->lib->config_filter(rt2x00dev, *total_flags); |
bc5213f4 | 482 | else |
8e260c22 | 483 | queue_work(rt2x00dev->hw->workqueue, &rt2x00dev->filter_work); |
3a643d24 ID |
484 | } |
485 | EXPORT_SYMBOL_GPL(rt2x00mac_configure_filter); | |
486 | ||
2bb057d0 | 487 | #ifdef CONFIG_RT2X00_LIB_CRYPTO |
7b40982e ID |
488 | static void memcpy_tkip(struct rt2x00lib_crypto *crypto, u8 *key, u8 key_len) |
489 | { | |
490 | if (key_len > NL80211_TKIP_DATA_OFFSET_ENCR_KEY) | |
491 | memcpy(&crypto->key, | |
492 | &key[NL80211_TKIP_DATA_OFFSET_ENCR_KEY], | |
493 | sizeof(crypto->key)); | |
494 | ||
495 | if (key_len > NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY) | |
496 | memcpy(&crypto->tx_mic, | |
497 | &key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY], | |
498 | sizeof(crypto->tx_mic)); | |
499 | ||
500 | if (key_len > NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY) | |
501 | memcpy(&crypto->rx_mic, | |
502 | &key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY], | |
503 | sizeof(crypto->rx_mic)); | |
504 | } | |
505 | ||
2bb057d0 | 506 | int rt2x00mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, |
dc822b5d | 507 | struct ieee80211_vif *vif, struct ieee80211_sta *sta, |
2bb057d0 ID |
508 | struct ieee80211_key_conf *key) |
509 | { | |
510 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
dc822b5d | 511 | struct rt2x00_intf *intf = vif_to_intf(vif); |
2bb057d0 ID |
512 | int (*set_key) (struct rt2x00_dev *rt2x00dev, |
513 | struct rt2x00lib_crypto *crypto, | |
514 | struct ieee80211_key_conf *key); | |
515 | struct rt2x00lib_crypto crypto; | |
dc822b5d JB |
516 | static const u8 bcast_addr[ETH_ALEN] = |
517 | { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, }; | |
2bb057d0 | 518 | |
8058409c ID |
519 | if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags)) |
520 | return 0; | |
521 | else if (!test_bit(CONFIG_SUPPORT_HW_CRYPTO, &rt2x00dev->flags)) | |
2bb057d0 ID |
522 | return -EOPNOTSUPP; |
523 | else if (key->keylen > 32) | |
524 | return -ENOSPC; | |
525 | ||
526 | memset(&crypto, 0, sizeof(crypto)); | |
527 | ||
528 | /* | |
529 | * When in STA mode, bssidx is always 0 otherwise local_address[5] | |
530 | * contains the bss number, see BSS_ID_MASK comments for details. | |
531 | */ | |
532 | if (rt2x00dev->intf_sta_count) | |
533 | crypto.bssidx = 0; | |
534 | else | |
dc822b5d | 535 | crypto.bssidx = intf->mac[5] & (rt2x00dev->ops->max_ap_intf - 1); |
2bb057d0 ID |
536 | |
537 | crypto.cipher = rt2x00crypto_key_to_cipher(key); | |
538 | if (crypto.cipher == CIPHER_NONE) | |
539 | return -EOPNOTSUPP; | |
540 | ||
541 | crypto.cmd = cmd; | |
dc822b5d JB |
542 | |
543 | if (sta) { | |
544 | /* some drivers need the AID */ | |
545 | crypto.aid = sta->aid; | |
546 | crypto.address = sta->addr; | |
547 | } else | |
548 | crypto.address = bcast_addr; | |
2bb057d0 | 549 | |
7b40982e ID |
550 | if (crypto.cipher == CIPHER_TKIP) |
551 | memcpy_tkip(&crypto, &key->key[0], key->keylen); | |
552 | else | |
2bb057d0 | 553 | memcpy(&crypto.key, &key->key[0], key->keylen); |
2bb057d0 ID |
554 | /* |
555 | * Each BSS has a maximum of 4 shared keys. | |
556 | * Shared key index values: | |
557 | * 0) BSS0 key0 | |
558 | * 1) BSS0 key1 | |
559 | * ... | |
560 | * 4) BSS1 key0 | |
561 | * ... | |
562 | * 8) BSS2 key0 | |
563 | * ... | |
564 | * Both pairwise as shared key indeces are determined by | |
565 | * driver. This is required because the hardware requires | |
566 | * keys to be assigned in correct order (When key 1 is | |
567 | * provided but key 0 is not, then the key is not found | |
568 | * by the hardware during RX). | |
569 | */ | |
acaf908d ID |
570 | if (cmd == SET_KEY) |
571 | key->hw_key_idx = 0; | |
2bb057d0 ID |
572 | |
573 | if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) | |
574 | set_key = rt2x00dev->ops->lib->config_pairwise_key; | |
575 | else | |
576 | set_key = rt2x00dev->ops->lib->config_shared_key; | |
577 | ||
578 | if (!set_key) | |
579 | return -EOPNOTSUPP; | |
580 | ||
581 | return set_key(rt2x00dev, &crypto, key); | |
582 | } | |
583 | EXPORT_SYMBOL_GPL(rt2x00mac_set_key); | |
584 | #endif /* CONFIG_RT2X00_LIB_CRYPTO */ | |
585 | ||
95ea3627 ID |
586 | int rt2x00mac_get_stats(struct ieee80211_hw *hw, |
587 | struct ieee80211_low_level_stats *stats) | |
588 | { | |
589 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
590 | ||
591 | /* | |
592 | * The dot11ACKFailureCount, dot11RTSFailureCount and | |
593 | * dot11RTSSuccessCount are updated in interrupt time. | |
594 | * dot11FCSErrorCount is updated in the link tuner. | |
595 | */ | |
596 | memcpy(stats, &rt2x00dev->low_level_stats, sizeof(*stats)); | |
597 | ||
598 | return 0; | |
599 | } | |
600 | EXPORT_SYMBOL_GPL(rt2x00mac_get_stats); | |
601 | ||
602 | int rt2x00mac_get_tx_stats(struct ieee80211_hw *hw, | |
603 | struct ieee80211_tx_queue_stats *stats) | |
604 | { | |
605 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
606 | unsigned int i; | |
607 | ||
61448f88 | 608 | for (i = 0; i < rt2x00dev->ops->tx_queues; i++) { |
57ffc589 JB |
609 | stats[i].len = rt2x00dev->tx[i].length; |
610 | stats[i].limit = rt2x00dev->tx[i].limit; | |
611 | stats[i].count = rt2x00dev->tx[i].count; | |
181d6902 | 612 | } |
95ea3627 ID |
613 | |
614 | return 0; | |
615 | } | |
616 | EXPORT_SYMBOL_GPL(rt2x00mac_get_tx_stats); | |
617 | ||
471b3efd JB |
618 | void rt2x00mac_bss_info_changed(struct ieee80211_hw *hw, |
619 | struct ieee80211_vif *vif, | |
620 | struct ieee80211_bss_conf *bss_conf, | |
621 | u32 changes) | |
5c58ee51 ID |
622 | { |
623 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
6bb40dd1 | 624 | struct rt2x00_intf *intf = vif_to_intf(vif); |
3a643d24 | 625 | unsigned int delayed = 0; |
5c58ee51 ID |
626 | |
627 | /* | |
6bb40dd1 ID |
628 | * When the association status has changed we must reset the link |
629 | * tuner counter. This is because some drivers determine if they | |
630 | * should perform link tuning based on the number of seconds | |
631 | * while associated or not associated. | |
5c58ee51 | 632 | */ |
6bb40dd1 ID |
633 | if (changes & BSS_CHANGED_ASSOC) { |
634 | rt2x00dev->link.count = 0; | |
5c58ee51 | 635 | |
6bb40dd1 ID |
636 | if (bss_conf->assoc) |
637 | rt2x00dev->intf_associated++; | |
638 | else | |
639 | rt2x00dev->intf_associated--; | |
a2e1d52a ID |
640 | |
641 | if (!test_bit(DRIVER_REQUIRE_SCHEDULED, &rt2x00dev->flags)) | |
642 | rt2x00leds_led_assoc(rt2x00dev, | |
643 | !!rt2x00dev->intf_associated); | |
644 | else | |
645 | delayed |= DELAYED_LED_ASSOC; | |
6bb40dd1 | 646 | } |
5c58ee51 | 647 | |
6bb40dd1 | 648 | /* |
72810379 ID |
649 | * When the erp information has changed, we should perform |
650 | * additional configuration steps. For all other changes we are done. | |
6bb40dd1 | 651 | */ |
1c02667d | 652 | if (changes & ~(BSS_CHANGED_ASSOC | BSS_CHANGED_HT)) { |
3a643d24 ID |
653 | if (!test_bit(DRIVER_REQUIRE_SCHEDULED, &rt2x00dev->flags)) |
654 | rt2x00lib_config_erp(rt2x00dev, intf, bss_conf); | |
655 | else | |
656 | delayed |= DELAYED_CONFIG_ERP; | |
657 | } | |
5c58ee51 | 658 | |
72810379 | 659 | spin_lock(&intf->lock); |
3a643d24 ID |
660 | if (delayed) { |
661 | intf->delayed_flags |= delayed; | |
8e260c22 | 662 | schedule_work(&rt2x00dev->intf_work); |
3a643d24 | 663 | } |
72810379 | 664 | spin_unlock(&intf->lock); |
5c58ee51 | 665 | } |
471b3efd | 666 | EXPORT_SYMBOL_GPL(rt2x00mac_bss_info_changed); |
5c58ee51 | 667 | |
e100bb64 | 668 | int rt2x00mac_conf_tx(struct ieee80211_hw *hw, u16 queue_idx, |
95ea3627 ID |
669 | const struct ieee80211_tx_queue_params *params) |
670 | { | |
671 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
181d6902 | 672 | struct data_queue *queue; |
95ea3627 | 673 | |
181d6902 ID |
674 | queue = rt2x00queue_get_queue(rt2x00dev, queue_idx); |
675 | if (unlikely(!queue)) | |
95ea3627 ID |
676 | return -EINVAL; |
677 | ||
678 | /* | |
679 | * The passed variables are stored as real value ((2^n)-1). | |
680 | * Ralink registers require to know the bit number 'n'. | |
681 | */ | |
3b3618ad | 682 | if (params->cw_min > 0) |
181d6902 | 683 | queue->cw_min = fls(params->cw_min); |
95ea3627 | 684 | else |
181d6902 | 685 | queue->cw_min = 5; /* cw_min: 2^5 = 32. */ |
95ea3627 | 686 | |
3b3618ad | 687 | if (params->cw_max > 0) |
181d6902 | 688 | queue->cw_max = fls(params->cw_max); |
95ea3627 | 689 | else |
181d6902 | 690 | queue->cw_max = 10; /* cw_min: 2^10 = 1024. */ |
95ea3627 | 691 | |
0b57664c | 692 | queue->aifs = params->aifs; |
2af0a570 | 693 | queue->txop = params->txop; |
95ea3627 ID |
694 | |
695 | INFO(rt2x00dev, | |
2af0a570 ID |
696 | "Configured TX queue %d - CWmin: %d, CWmax: %d, Aifs: %d, TXop: %d.\n", |
697 | queue_idx, queue->cw_min, queue->cw_max, queue->aifs, queue->txop); | |
95ea3627 ID |
698 | |
699 | return 0; | |
700 | } | |
701 | EXPORT_SYMBOL_GPL(rt2x00mac_conf_tx); |