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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 | ||
18ad01c4 JB |
76 | /* Disable hardware encryption */ |
77 | rts_info->control.hw_key = NULL; | |
2bb057d0 ID |
78 | |
79 | /* | |
80 | * RTS/CTS frame should use the length of the frame plus any | |
81 | * encryption overhead that will be added by the hardware. | |
82 | */ | |
7b40982e | 83 | data_length += rt2x00crypto_tx_overhead(rt2x00dev, skb); |
2bb057d0 | 84 | |
e6a9854b | 85 | if (tx_info->control.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT) |
e039fa4a | 86 | ieee80211_ctstoself_get(rt2x00dev->hw, tx_info->control.vif, |
2bb057d0 | 87 | frag_skb->data, data_length, tx_info, |
95ea3627 ID |
88 | (struct ieee80211_cts *)(skb->data)); |
89 | else | |
e039fa4a | 90 | ieee80211_rts_get(rt2x00dev->hw, tx_info->control.vif, |
2bb057d0 | 91 | frag_skb->data, data_length, tx_info, |
95ea3627 ID |
92 | (struct ieee80211_rts *)(skb->data)); |
93 | ||
b9740c23 DW |
94 | retval = rt2x00queue_write_tx_frame(queue, skb); |
95 | if (retval) { | |
e7087a82 | 96 | dev_kfree_skb_any(skb); |
95ea3627 | 97 | WARNING(rt2x00dev, "Failed to send RTS/CTS frame.\n"); |
95ea3627 ID |
98 | } |
99 | ||
b9740c23 | 100 | return retval; |
95ea3627 ID |
101 | } |
102 | ||
e039fa4a | 103 | int rt2x00mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb) |
95ea3627 ID |
104 | { |
105 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
e039fa4a | 106 | struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb); |
95ea3627 | 107 | struct ieee80211_hdr *ieee80211hdr = (struct ieee80211_hdr *)skb->data; |
e2530083 | 108 | enum data_queue_qid qid = skb_get_queue_mapping(skb); |
181d6902 | 109 | struct data_queue *queue; |
95ea3627 ID |
110 | u16 frame_control; |
111 | ||
066cb637 ID |
112 | /* |
113 | * Mac80211 might be calling this function while we are trying | |
114 | * to remove the device or perhaps suspending it. | |
115 | * Note that we can only stop the TX queues inside the TX path | |
116 | * due to possible race conditions in mac80211. | |
117 | */ | |
0262ab0d | 118 | if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags)) |
b9740c23 | 119 | goto exit_fail; |
066cb637 | 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); |
0e3de998 | 133 | goto exit_fail; |
95ea3627 ID |
134 | } |
135 | ||
136 | /* | |
772a249d ID |
137 | * If CTS/RTS is required. create and queue that frame first. |
138 | * Make sure we have at least enough entries available to send | |
139 | * this CTS/RTS frame as well as the data frame. | |
2d9ccf84 ID |
140 | * Note that when the driver has set the set_rts_threshold() |
141 | * callback function it doesn't need software generation of | |
772a249d | 142 | * either RTS or CTS-to-self frame and handles everything |
2d9ccf84 | 143 | * inside the hardware. |
95ea3627 ID |
144 | */ |
145 | frame_control = le16_to_cpu(ieee80211hdr->frame_control); | |
e6a9854b JB |
146 | if ((tx_info->control.rates[0].flags & (IEEE80211_TX_RC_USE_RTS_CTS | |
147 | IEEE80211_TX_RC_USE_CTS_PROTECT)) && | |
2d9ccf84 | 148 | !rt2x00dev->ops->hw->set_rts_threshold) { |
b9740c23 DW |
149 | if (rt2x00queue_available(queue) <= 1) |
150 | goto exit_fail; | |
95ea3627 | 151 | |
b9740c23 DW |
152 | if (rt2x00mac_tx_rts_cts(rt2x00dev, queue, skb)) |
153 | goto exit_fail; | |
1230cb83 ID |
154 | } |
155 | ||
b9740c23 DW |
156 | if (rt2x00queue_write_tx_frame(queue, skb)) |
157 | goto exit_fail; | |
158 | ||
b869767b | 159 | if (rt2x00queue_threshold(queue)) |
e2530083 | 160 | ieee80211_stop_queue(rt2x00dev->hw, qid); |
95ea3627 | 161 | |
95ea3627 | 162 | return NETDEV_TX_OK; |
b9740c23 DW |
163 | |
164 | exit_fail: | |
165 | ieee80211_stop_queue(rt2x00dev->hw, qid); | |
166 | dev_kfree_skb_any(skb); | |
167 | return NETDEV_TX_OK; | |
95ea3627 ID |
168 | } |
169 | EXPORT_SYMBOL_GPL(rt2x00mac_tx); | |
170 | ||
171 | int rt2x00mac_start(struct ieee80211_hw *hw) | |
172 | { | |
173 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
95ea3627 | 174 | |
0262ab0d | 175 | if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags)) |
95ea3627 ID |
176 | return 0; |
177 | ||
e37ea213 | 178 | return rt2x00lib_start(rt2x00dev); |
95ea3627 ID |
179 | } |
180 | EXPORT_SYMBOL_GPL(rt2x00mac_start); | |
181 | ||
182 | void rt2x00mac_stop(struct ieee80211_hw *hw) | |
183 | { | |
184 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
185 | ||
0262ab0d | 186 | if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags)) |
066cb637 ID |
187 | return; |
188 | ||
e37ea213 | 189 | rt2x00lib_stop(rt2x00dev); |
95ea3627 ID |
190 | } |
191 | EXPORT_SYMBOL_GPL(rt2x00mac_stop); | |
192 | ||
193 | int rt2x00mac_add_interface(struct ieee80211_hw *hw, | |
194 | struct ieee80211_if_init_conf *conf) | |
195 | { | |
196 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
6bb40dd1 | 197 | struct rt2x00_intf *intf = vif_to_intf(conf->vif); |
e58c6aca | 198 | struct data_queue *queue = rt2x00queue_get_queue(rt2x00dev, QID_BEACON); |
6bb40dd1 ID |
199 | struct queue_entry *entry = NULL; |
200 | unsigned int i; | |
95ea3627 ID |
201 | |
202 | /* | |
6bb40dd1 ID |
203 | * Don't allow interfaces to be added |
204 | * the device has disappeared. | |
95ea3627 | 205 | */ |
0262ab0d ID |
206 | if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags) || |
207 | !test_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags)) | |
6bb40dd1 ID |
208 | return -ENODEV; |
209 | ||
0fc98039 | 210 | switch (conf->type) { |
05c914fe | 211 | case NL80211_IFTYPE_AP: |
0fc98039 ID |
212 | /* |
213 | * We don't support mixed combinations of | |
214 | * sta and ap interfaces. | |
215 | */ | |
216 | if (rt2x00dev->intf_sta_count) | |
217 | return -ENOBUFS; | |
218 | ||
219 | /* | |
220 | * Check if we exceeded the maximum amount | |
221 | * of supported interfaces. | |
222 | */ | |
223 | if (rt2x00dev->intf_ap_count >= rt2x00dev->ops->max_ap_intf) | |
224 | return -ENOBUFS; | |
225 | ||
226 | break; | |
05c914fe JB |
227 | case NL80211_IFTYPE_STATION: |
228 | case NL80211_IFTYPE_ADHOC: | |
a07dbea2 | 229 | case NL80211_IFTYPE_MESH_POINT: |
ce292a64 | 230 | case NL80211_IFTYPE_WDS: |
0fc98039 ID |
231 | /* |
232 | * We don't support mixed combinations of | |
233 | * sta and ap interfaces. | |
234 | */ | |
235 | if (rt2x00dev->intf_ap_count) | |
236 | return -ENOBUFS; | |
237 | ||
238 | /* | |
239 | * Check if we exceeded the maximum amount | |
240 | * of supported interfaces. | |
241 | */ | |
242 | if (rt2x00dev->intf_sta_count >= rt2x00dev->ops->max_sta_intf) | |
243 | return -ENOBUFS; | |
244 | ||
245 | break; | |
246 | default: | |
247 | return -EINVAL; | |
248 | } | |
6bb40dd1 ID |
249 | |
250 | /* | |
251 | * Loop through all beacon queues to find a free | |
252 | * entry. Since there are as much beacon entries | |
253 | * as the maximum interfaces, this search shouldn't | |
254 | * fail. | |
255 | */ | |
256 | for (i = 0; i < queue->limit; i++) { | |
257 | entry = &queue->entries[i]; | |
0262ab0d | 258 | if (!test_and_set_bit(ENTRY_BCN_ASSIGNED, &entry->flags)) |
6bb40dd1 ID |
259 | break; |
260 | } | |
261 | ||
262 | if (unlikely(i == queue->limit)) | |
95ea3627 ID |
263 | return -ENOBUFS; |
264 | ||
6bb40dd1 ID |
265 | /* |
266 | * We are now absolutely sure the interface can be created, | |
267 | * increase interface count and start initialization. | |
268 | */ | |
269 | ||
05c914fe | 270 | if (conf->type == NL80211_IFTYPE_AP) |
6bb40dd1 ID |
271 | rt2x00dev->intf_ap_count++; |
272 | else | |
273 | rt2x00dev->intf_sta_count++; | |
274 | ||
275 | spin_lock_init(&intf->lock); | |
d4764b29 | 276 | spin_lock_init(&intf->seqlock); |
17512dc3 | 277 | mutex_init(&intf->beacon_skb_mutex); |
6bb40dd1 ID |
278 | intf->beacon = entry; |
279 | ||
05c914fe | 280 | if (conf->type == NL80211_IFTYPE_AP) |
4150c572 JB |
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) || |
05c914fe JB |
314 | (conf->type == NL80211_IFTYPE_AP && !rt2x00dev->intf_ap_count) || |
315 | (conf->type != NL80211_IFTYPE_AP && !rt2x00dev->intf_sta_count)) | |
95ea3627 ID |
316 | return; |
317 | ||
05c914fe | 318 | if (conf->type == NL80211_IFTYPE_AP) |
6bb40dd1 ID |
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 | 333 | rt2x00lib_config_intf(rt2x00dev, intf, |
05c914fe | 334 | NL80211_IFTYPE_UNSPECIFIED, NULL, NULL); |
95ea3627 ID |
335 | } |
336 | EXPORT_SYMBOL_GPL(rt2x00mac_remove_interface); | |
337 | ||
e8975581 | 338 | int rt2x00mac_config(struct ieee80211_hw *hw, u32 changed) |
95ea3627 ID |
339 | { |
340 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
e8975581 | 341 | struct ieee80211_conf *conf = &hw->conf; |
95ea3627 ID |
342 | |
343 | /* | |
49513481 | 344 | * mac80211 might be calling this function while we are trying |
066cb637 | 345 | * to remove the device or perhaps suspending it. |
95ea3627 | 346 | */ |
0262ab0d | 347 | if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags)) |
95ea3627 ID |
348 | return 0; |
349 | ||
350 | /* | |
bdfa500b ID |
351 | * Some configuration parameters (e.g. channel and antenna values) can |
352 | * only be set when the radio is enabled, but do require the RX to | |
353 | * be off. | |
95ea3627 | 354 | */ |
bdfa500b | 355 | rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_OFF); |
95ea3627 | 356 | |
bdfa500b ID |
357 | /* |
358 | * When we've just turned on the radio, we want to reprogram | |
359 | * everything to ensure a consistent state | |
360 | */ | |
361 | rt2x00lib_config(rt2x00dev, conf, changed); | |
74c0ee9b | 362 | |
bdfa500b ID |
363 | /* |
364 | * After the radio has been enabled we need to configure | |
365 | * the antenna to the default settings. rt2x00lib_config_antenna() | |
366 | * should determine if any action should be taken based on | |
367 | * checking if diversity has been enabled or no antenna changes | |
368 | * have been made since the last configuration change. | |
369 | */ | |
370 | rt2x00lib_config_antenna(rt2x00dev, rt2x00dev->default_ant); | |
95ea3627 | 371 | |
bdfa500b ID |
372 | /* Turn RX back on */ |
373 | rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_ON); | |
95ea3627 ID |
374 | |
375 | return 0; | |
376 | } | |
377 | EXPORT_SYMBOL_GPL(rt2x00mac_config); | |
378 | ||
3a643d24 ID |
379 | void rt2x00mac_configure_filter(struct ieee80211_hw *hw, |
380 | unsigned int changed_flags, | |
381 | unsigned int *total_flags, | |
3ac64bee | 382 | u64 multicast) |
3a643d24 ID |
383 | { |
384 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
385 | ||
386 | /* | |
387 | * Mask off any flags we are going to ignore | |
388 | * from the total_flags field. | |
389 | */ | |
390 | *total_flags &= | |
391 | FIF_ALLMULTI | | |
392 | FIF_FCSFAIL | | |
393 | FIF_PLCPFAIL | | |
394 | FIF_CONTROL | | |
1afcfd54 | 395 | FIF_PSPOLL | |
3a643d24 ID |
396 | FIF_OTHER_BSS | |
397 | FIF_PROMISC_IN_BSS; | |
398 | ||
399 | /* | |
400 | * Apply some rules to the filters: | |
401 | * - Some filters imply different filters to be set. | |
402 | * - Some things we can't filter out at all. | |
403 | * - Multicast filter seems to kill broadcast traffic so never use it. | |
404 | */ | |
405 | *total_flags |= FIF_ALLMULTI; | |
406 | if (*total_flags & FIF_OTHER_BSS || | |
407 | *total_flags & FIF_PROMISC_IN_BSS) | |
408 | *total_flags |= FIF_PROMISC_IN_BSS | FIF_OTHER_BSS; | |
409 | ||
1afcfd54 IP |
410 | /* |
411 | * If the device has a single filter for all control frames, | |
412 | * FIF_CONTROL and FIF_PSPOLL flags imply each other. | |
413 | * And if the device has more than one filter for control frames | |
414 | * of different types, but has no a separate filter for PS Poll frames, | |
415 | * FIF_CONTROL flag implies FIF_PSPOLL. | |
416 | */ | |
417 | if (!test_bit(DRIVER_SUPPORT_CONTROL_FILTERS, &rt2x00dev->flags)) { | |
418 | if (*total_flags & FIF_CONTROL || *total_flags & FIF_PSPOLL) | |
419 | *total_flags |= FIF_CONTROL | FIF_PSPOLL; | |
420 | } | |
421 | if (!test_bit(DRIVER_SUPPORT_CONTROL_FILTER_PSPOLL, &rt2x00dev->flags)) { | |
422 | if (*total_flags & FIF_CONTROL) | |
423 | *total_flags |= FIF_PSPOLL; | |
424 | } | |
425 | ||
3a643d24 ID |
426 | /* |
427 | * Check if there is any work left for us. | |
428 | */ | |
429 | if (rt2x00dev->packet_filter == *total_flags) | |
430 | return; | |
431 | rt2x00dev->packet_filter = *total_flags; | |
432 | ||
433 | if (!test_bit(DRIVER_REQUIRE_SCHEDULED, &rt2x00dev->flags)) | |
3a643d24 | 434 | rt2x00dev->ops->lib->config_filter(rt2x00dev, *total_flags); |
bc5213f4 | 435 | else |
42935eca | 436 | ieee80211_queue_work(rt2x00dev->hw, &rt2x00dev->filter_work); |
3a643d24 ID |
437 | } |
438 | EXPORT_SYMBOL_GPL(rt2x00mac_configure_filter); | |
439 | ||
ad2f34b4 ID |
440 | int rt2x00mac_set_tim(struct ieee80211_hw *hw, struct ieee80211_sta *sta, |
441 | bool set) | |
442 | { | |
443 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
444 | ||
445 | rt2x00lib_beacondone(rt2x00dev); | |
446 | return 0; | |
447 | } | |
448 | EXPORT_SYMBOL_GPL(rt2x00mac_set_tim); | |
449 | ||
2bb057d0 | 450 | #ifdef CONFIG_RT2X00_LIB_CRYPTO |
7b40982e ID |
451 | static void memcpy_tkip(struct rt2x00lib_crypto *crypto, u8 *key, u8 key_len) |
452 | { | |
453 | if (key_len > NL80211_TKIP_DATA_OFFSET_ENCR_KEY) | |
454 | memcpy(&crypto->key, | |
455 | &key[NL80211_TKIP_DATA_OFFSET_ENCR_KEY], | |
456 | sizeof(crypto->key)); | |
457 | ||
458 | if (key_len > NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY) | |
459 | memcpy(&crypto->tx_mic, | |
460 | &key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY], | |
461 | sizeof(crypto->tx_mic)); | |
462 | ||
463 | if (key_len > NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY) | |
464 | memcpy(&crypto->rx_mic, | |
465 | &key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY], | |
466 | sizeof(crypto->rx_mic)); | |
467 | } | |
468 | ||
2bb057d0 | 469 | int rt2x00mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, |
dc822b5d | 470 | struct ieee80211_vif *vif, struct ieee80211_sta *sta, |
2bb057d0 ID |
471 | struct ieee80211_key_conf *key) |
472 | { | |
473 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
dc822b5d | 474 | struct rt2x00_intf *intf = vif_to_intf(vif); |
2bb057d0 ID |
475 | int (*set_key) (struct rt2x00_dev *rt2x00dev, |
476 | struct rt2x00lib_crypto *crypto, | |
477 | struct ieee80211_key_conf *key); | |
478 | struct rt2x00lib_crypto crypto; | |
dc822b5d JB |
479 | static const u8 bcast_addr[ETH_ALEN] = |
480 | { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, }; | |
2bb057d0 | 481 | |
8058409c ID |
482 | if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags)) |
483 | return 0; | |
484 | else if (!test_bit(CONFIG_SUPPORT_HW_CRYPTO, &rt2x00dev->flags)) | |
2bb057d0 ID |
485 | return -EOPNOTSUPP; |
486 | else if (key->keylen > 32) | |
487 | return -ENOSPC; | |
488 | ||
489 | memset(&crypto, 0, sizeof(crypto)); | |
490 | ||
491 | /* | |
492 | * When in STA mode, bssidx is always 0 otherwise local_address[5] | |
493 | * contains the bss number, see BSS_ID_MASK comments for details. | |
494 | */ | |
495 | if (rt2x00dev->intf_sta_count) | |
496 | crypto.bssidx = 0; | |
497 | else | |
dc822b5d | 498 | crypto.bssidx = intf->mac[5] & (rt2x00dev->ops->max_ap_intf - 1); |
2bb057d0 ID |
499 | |
500 | crypto.cipher = rt2x00crypto_key_to_cipher(key); | |
501 | if (crypto.cipher == CIPHER_NONE) | |
502 | return -EOPNOTSUPP; | |
503 | ||
504 | crypto.cmd = cmd; | |
dc822b5d JB |
505 | |
506 | if (sta) { | |
507 | /* some drivers need the AID */ | |
508 | crypto.aid = sta->aid; | |
509 | crypto.address = sta->addr; | |
510 | } else | |
511 | crypto.address = bcast_addr; | |
2bb057d0 | 512 | |
7b40982e ID |
513 | if (crypto.cipher == CIPHER_TKIP) |
514 | memcpy_tkip(&crypto, &key->key[0], key->keylen); | |
515 | else | |
2bb057d0 | 516 | memcpy(&crypto.key, &key->key[0], key->keylen); |
2bb057d0 ID |
517 | /* |
518 | * Each BSS has a maximum of 4 shared keys. | |
519 | * Shared key index values: | |
520 | * 0) BSS0 key0 | |
521 | * 1) BSS0 key1 | |
522 | * ... | |
523 | * 4) BSS1 key0 | |
524 | * ... | |
525 | * 8) BSS2 key0 | |
526 | * ... | |
527 | * Both pairwise as shared key indeces are determined by | |
528 | * driver. This is required because the hardware requires | |
529 | * keys to be assigned in correct order (When key 1 is | |
530 | * provided but key 0 is not, then the key is not found | |
531 | * by the hardware during RX). | |
532 | */ | |
acaf908d ID |
533 | if (cmd == SET_KEY) |
534 | key->hw_key_idx = 0; | |
2bb057d0 ID |
535 | |
536 | if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) | |
537 | set_key = rt2x00dev->ops->lib->config_pairwise_key; | |
538 | else | |
539 | set_key = rt2x00dev->ops->lib->config_shared_key; | |
540 | ||
541 | if (!set_key) | |
542 | return -EOPNOTSUPP; | |
543 | ||
544 | return set_key(rt2x00dev, &crypto, key); | |
545 | } | |
546 | EXPORT_SYMBOL_GPL(rt2x00mac_set_key); | |
547 | #endif /* CONFIG_RT2X00_LIB_CRYPTO */ | |
548 | ||
95ea3627 ID |
549 | int rt2x00mac_get_stats(struct ieee80211_hw *hw, |
550 | struct ieee80211_low_level_stats *stats) | |
551 | { | |
552 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
553 | ||
554 | /* | |
555 | * The dot11ACKFailureCount, dot11RTSFailureCount and | |
556 | * dot11RTSSuccessCount are updated in interrupt time. | |
557 | * dot11FCSErrorCount is updated in the link tuner. | |
558 | */ | |
559 | memcpy(stats, &rt2x00dev->low_level_stats, sizeof(*stats)); | |
560 | ||
561 | return 0; | |
562 | } | |
563 | EXPORT_SYMBOL_GPL(rt2x00mac_get_stats); | |
564 | ||
565 | int rt2x00mac_get_tx_stats(struct ieee80211_hw *hw, | |
566 | struct ieee80211_tx_queue_stats *stats) | |
567 | { | |
568 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
569 | unsigned int i; | |
570 | ||
61448f88 | 571 | for (i = 0; i < rt2x00dev->ops->tx_queues; i++) { |
57ffc589 JB |
572 | stats[i].len = rt2x00dev->tx[i].length; |
573 | stats[i].limit = rt2x00dev->tx[i].limit; | |
574 | stats[i].count = rt2x00dev->tx[i].count; | |
181d6902 | 575 | } |
95ea3627 ID |
576 | |
577 | return 0; | |
578 | } | |
579 | EXPORT_SYMBOL_GPL(rt2x00mac_get_tx_stats); | |
580 | ||
471b3efd JB |
581 | void rt2x00mac_bss_info_changed(struct ieee80211_hw *hw, |
582 | struct ieee80211_vif *vif, | |
583 | struct ieee80211_bss_conf *bss_conf, | |
584 | u32 changes) | |
5c58ee51 ID |
585 | { |
586 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
6bb40dd1 | 587 | struct rt2x00_intf *intf = vif_to_intf(vif); |
3a643d24 | 588 | unsigned int delayed = 0; |
2d0ddec5 JB |
589 | int update_bssid = 0; |
590 | ||
591 | /* | |
49513481 | 592 | * mac80211 might be calling this function while we are trying |
2d0ddec5 JB |
593 | * to remove the device or perhaps suspending it. |
594 | */ | |
595 | if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags)) | |
596 | return; | |
597 | ||
598 | spin_lock(&intf->lock); | |
599 | ||
600 | /* | |
601 | * conf->bssid can be NULL if coming from the internal | |
602 | * beacon update routine. | |
603 | */ | |
604 | if (changes & BSS_CHANGED_BSSID) { | |
605 | update_bssid = 1; | |
606 | memcpy(&intf->bssid, bss_conf->bssid, ETH_ALEN); | |
607 | } | |
608 | ||
609 | spin_unlock(&intf->lock); | |
610 | ||
611 | /* | |
612 | * Call rt2x00_config_intf() outside of the spinlock context since | |
613 | * the call will sleep for USB drivers. By using the ieee80211_if_conf | |
614 | * values as arguments we make keep access to rt2x00_intf thread safe | |
615 | * even without the lock. | |
616 | */ | |
617 | if (changes & BSS_CHANGED_BSSID) | |
618 | rt2x00lib_config_intf(rt2x00dev, intf, vif->type, NULL, | |
619 | update_bssid ? bss_conf->bssid : NULL); | |
620 | ||
621 | /* | |
622 | * Update the beacon. | |
623 | */ | |
624 | if (changes & (BSS_CHANGED_BEACON | BSS_CHANGED_BEACON_ENABLED)) | |
625 | rt2x00queue_update_beacon(rt2x00dev, vif, | |
626 | bss_conf->enable_beacon); | |
5c58ee51 ID |
627 | |
628 | /* | |
6bb40dd1 ID |
629 | * When the association status has changed we must reset the link |
630 | * tuner counter. This is because some drivers determine if they | |
631 | * should perform link tuning based on the number of seconds | |
632 | * while associated or not associated. | |
5c58ee51 | 633 | */ |
6bb40dd1 ID |
634 | if (changes & BSS_CHANGED_ASSOC) { |
635 | rt2x00dev->link.count = 0; | |
5c58ee51 | 636 | |
6bb40dd1 ID |
637 | if (bss_conf->assoc) |
638 | rt2x00dev->intf_associated++; | |
639 | else | |
640 | rt2x00dev->intf_associated--; | |
a2e1d52a ID |
641 | |
642 | if (!test_bit(DRIVER_REQUIRE_SCHEDULED, &rt2x00dev->flags)) | |
643 | rt2x00leds_led_assoc(rt2x00dev, | |
644 | !!rt2x00dev->intf_associated); | |
645 | else | |
646 | delayed |= DELAYED_LED_ASSOC; | |
6bb40dd1 | 647 | } |
5c58ee51 | 648 | |
6bb40dd1 | 649 | /* |
72810379 ID |
650 | * When the erp information has changed, we should perform |
651 | * additional configuration steps. For all other changes we are done. | |
6bb40dd1 | 652 | */ |
1c02667d | 653 | if (changes & ~(BSS_CHANGED_ASSOC | BSS_CHANGED_HT)) { |
3a643d24 ID |
654 | if (!test_bit(DRIVER_REQUIRE_SCHEDULED, &rt2x00dev->flags)) |
655 | rt2x00lib_config_erp(rt2x00dev, intf, bss_conf); | |
656 | else | |
657 | delayed |= DELAYED_CONFIG_ERP; | |
658 | } | |
5c58ee51 | 659 | |
72810379 | 660 | spin_lock(&intf->lock); |
3a643d24 ID |
661 | if (delayed) { |
662 | intf->delayed_flags |= delayed; | |
8e260c22 | 663 | schedule_work(&rt2x00dev->intf_work); |
3a643d24 | 664 | } |
72810379 | 665 | spin_unlock(&intf->lock); |
5c58ee51 | 666 | } |
471b3efd | 667 | EXPORT_SYMBOL_GPL(rt2x00mac_bss_info_changed); |
5c58ee51 | 668 | |
e100bb64 | 669 | int rt2x00mac_conf_tx(struct ieee80211_hw *hw, u16 queue_idx, |
95ea3627 ID |
670 | const struct ieee80211_tx_queue_params *params) |
671 | { | |
672 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
181d6902 | 673 | struct data_queue *queue; |
95ea3627 | 674 | |
181d6902 ID |
675 | queue = rt2x00queue_get_queue(rt2x00dev, queue_idx); |
676 | if (unlikely(!queue)) | |
95ea3627 ID |
677 | return -EINVAL; |
678 | ||
679 | /* | |
680 | * The passed variables are stored as real value ((2^n)-1). | |
681 | * Ralink registers require to know the bit number 'n'. | |
682 | */ | |
3b3618ad | 683 | if (params->cw_min > 0) |
181d6902 | 684 | queue->cw_min = fls(params->cw_min); |
95ea3627 | 685 | else |
181d6902 | 686 | queue->cw_min = 5; /* cw_min: 2^5 = 32. */ |
95ea3627 | 687 | |
3b3618ad | 688 | if (params->cw_max > 0) |
181d6902 | 689 | queue->cw_max = fls(params->cw_max); |
95ea3627 | 690 | else |
181d6902 | 691 | queue->cw_max = 10; /* cw_min: 2^10 = 1024. */ |
95ea3627 | 692 | |
0b57664c | 693 | queue->aifs = params->aifs; |
2af0a570 | 694 | queue->txop = params->txop; |
95ea3627 ID |
695 | |
696 | INFO(rt2x00dev, | |
2af0a570 ID |
697 | "Configured TX queue %d - CWmin: %d, CWmax: %d, Aifs: %d, TXop: %d.\n", |
698 | queue_idx, queue->cw_min, queue->cw_max, queue->aifs, queue->txop); | |
95ea3627 ID |
699 | |
700 | return 0; | |
701 | } | |
702 | EXPORT_SYMBOL_GPL(rt2x00mac_conf_tx); | |
e47a5cdd ID |
703 | |
704 | void rt2x00mac_rfkill_poll(struct ieee80211_hw *hw) | |
705 | { | |
706 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
707 | bool blocked = !!rt2x00dev->ops->lib->rfkill_poll(rt2x00dev); | |
708 | ||
709 | wiphy_rfkill_set_hw_state(hw->wiphy, blocked); | |
710 | } | |
711 | EXPORT_SYMBOL_GPL(rt2x00mac_rfkill_poll); |