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95ea3627 | 1 | /* |
9c9a0d14 | 2 | Copyright (C) 2004 - 2009 Ivo van Doorn <IvDoorn@gmail.com> |
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 | 69 | |
e6a9854b | 70 | if (tx_info->control.rates[0].flags & IEEE80211_TX_RC_USE_CTS_PROTECT) |
e039fa4a JB |
71 | rts_info->flags |= IEEE80211_TX_CTL_NO_ACK; |
72 | else | |
73 | rts_info->flags &= ~IEEE80211_TX_CTL_NO_ACK; | |
74 | ||
18ad01c4 JB |
75 | /* Disable hardware encryption */ |
76 | rts_info->control.hw_key = NULL; | |
2bb057d0 ID |
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 | ||
7351c6bd | 93 | retval = rt2x00queue_write_tx_frame(queue, skb, true); |
b9740c23 | 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); |
e2530083 | 106 | enum data_queue_qid qid = skb_get_queue_mapping(skb); |
181d6902 | 107 | struct data_queue *queue; |
95ea3627 | 108 | |
066cb637 ID |
109 | /* |
110 | * Mac80211 might be calling this function while we are trying | |
111 | * to remove the device or perhaps suspending it. | |
112 | * Note that we can only stop the TX queues inside the TX path | |
113 | * due to possible race conditions in mac80211. | |
114 | */ | |
0262ab0d | 115 | if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags)) |
b9740c23 | 116 | goto exit_fail; |
066cb637 | 117 | |
95ea3627 | 118 | /* |
181d6902 | 119 | * Determine which queue to put packet on. |
95ea3627 | 120 | */ |
e039fa4a | 121 | if (tx_info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM && |
e4030a2f | 122 | test_bit(DRIVER_REQUIRE_ATIM_QUEUE, &rt2x00dev->flags)) |
e58c6aca | 123 | queue = rt2x00queue_get_queue(rt2x00dev, QID_ATIM); |
e4030a2f | 124 | else |
e58c6aca | 125 | queue = rt2x00queue_get_queue(rt2x00dev, qid); |
181d6902 | 126 | if (unlikely(!queue)) { |
95ea3627 ID |
127 | ERROR(rt2x00dev, |
128 | "Attempt to send packet over invalid queue %d.\n" | |
e58c6aca | 129 | "Please file bug report to %s.\n", qid, DRV_PROJECT); |
0e3de998 | 130 | goto exit_fail; |
95ea3627 ID |
131 | } |
132 | ||
133 | /* | |
772a249d ID |
134 | * If CTS/RTS is required. create and queue that frame first. |
135 | * Make sure we have at least enough entries available to send | |
136 | * this CTS/RTS frame as well as the data frame. | |
2d9ccf84 ID |
137 | * Note that when the driver has set the set_rts_threshold() |
138 | * callback function it doesn't need software generation of | |
772a249d | 139 | * either RTS or CTS-to-self frame and handles everything |
2d9ccf84 | 140 | * inside the hardware. |
95ea3627 | 141 | */ |
e6a9854b JB |
142 | if ((tx_info->control.rates[0].flags & (IEEE80211_TX_RC_USE_RTS_CTS | |
143 | IEEE80211_TX_RC_USE_CTS_PROTECT)) && | |
2d9ccf84 | 144 | !rt2x00dev->ops->hw->set_rts_threshold) { |
b9740c23 DW |
145 | if (rt2x00queue_available(queue) <= 1) |
146 | goto exit_fail; | |
95ea3627 | 147 | |
b9740c23 DW |
148 | if (rt2x00mac_tx_rts_cts(rt2x00dev, queue, skb)) |
149 | goto exit_fail; | |
1230cb83 ID |
150 | } |
151 | ||
7351c6bd | 152 | if (rt2x00queue_write_tx_frame(queue, skb, false)) |
b9740c23 DW |
153 | goto exit_fail; |
154 | ||
b869767b | 155 | if (rt2x00queue_threshold(queue)) |
e2530083 | 156 | ieee80211_stop_queue(rt2x00dev->hw, qid); |
95ea3627 | 157 | |
95ea3627 | 158 | return NETDEV_TX_OK; |
b9740c23 DW |
159 | |
160 | exit_fail: | |
161 | ieee80211_stop_queue(rt2x00dev->hw, qid); | |
162 | dev_kfree_skb_any(skb); | |
163 | return NETDEV_TX_OK; | |
95ea3627 ID |
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 | |
0262ab0d | 171 | if (!test_bit(DEVICE_STATE_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 | ||
0262ab0d | 182 | if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags)) |
066cb637 ID |
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, | |
1ed32e4f | 190 | struct ieee80211_vif *vif) |
95ea3627 ID |
191 | { |
192 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
1ed32e4f | 193 | struct rt2x00_intf *intf = vif_to_intf(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 | */ |
0262ab0d ID |
202 | if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags) || |
203 | !test_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags)) | |
6bb40dd1 ID |
204 | return -ENODEV; |
205 | ||
1ed32e4f | 206 | switch (vif->type) { |
05c914fe | 207 | case NL80211_IFTYPE_AP: |
0fc98039 ID |
208 | /* |
209 | * We don't support mixed combinations of | |
210 | * sta and ap interfaces. | |
211 | */ | |
212 | if (rt2x00dev->intf_sta_count) | |
213 | return -ENOBUFS; | |
214 | ||
215 | /* | |
216 | * Check if we exceeded the maximum amount | |
217 | * of supported interfaces. | |
218 | */ | |
219 | if (rt2x00dev->intf_ap_count >= rt2x00dev->ops->max_ap_intf) | |
220 | return -ENOBUFS; | |
221 | ||
222 | break; | |
05c914fe JB |
223 | case NL80211_IFTYPE_STATION: |
224 | case NL80211_IFTYPE_ADHOC: | |
a07dbea2 | 225 | case NL80211_IFTYPE_MESH_POINT: |
ce292a64 | 226 | case NL80211_IFTYPE_WDS: |
0fc98039 ID |
227 | /* |
228 | * We don't support mixed combinations of | |
229 | * sta and ap interfaces. | |
230 | */ | |
231 | if (rt2x00dev->intf_ap_count) | |
232 | return -ENOBUFS; | |
233 | ||
234 | /* | |
235 | * Check if we exceeded the maximum amount | |
236 | * of supported interfaces. | |
237 | */ | |
238 | if (rt2x00dev->intf_sta_count >= rt2x00dev->ops->max_sta_intf) | |
239 | return -ENOBUFS; | |
240 | ||
241 | break; | |
242 | default: | |
243 | return -EINVAL; | |
244 | } | |
6bb40dd1 ID |
245 | |
246 | /* | |
247 | * Loop through all beacon queues to find a free | |
248 | * entry. Since there are as much beacon entries | |
249 | * as the maximum interfaces, this search shouldn't | |
250 | * fail. | |
251 | */ | |
252 | for (i = 0; i < queue->limit; i++) { | |
253 | entry = &queue->entries[i]; | |
0262ab0d | 254 | if (!test_and_set_bit(ENTRY_BCN_ASSIGNED, &entry->flags)) |
6bb40dd1 ID |
255 | break; |
256 | } | |
257 | ||
258 | if (unlikely(i == queue->limit)) | |
95ea3627 ID |
259 | return -ENOBUFS; |
260 | ||
6bb40dd1 ID |
261 | /* |
262 | * We are now absolutely sure the interface can be created, | |
263 | * increase interface count and start initialization. | |
264 | */ | |
265 | ||
1ed32e4f | 266 | if (vif->type == NL80211_IFTYPE_AP) |
6bb40dd1 ID |
267 | rt2x00dev->intf_ap_count++; |
268 | else | |
269 | rt2x00dev->intf_sta_count++; | |
270 | ||
271 | spin_lock_init(&intf->lock); | |
d4764b29 | 272 | spin_lock_init(&intf->seqlock); |
17512dc3 | 273 | mutex_init(&intf->beacon_skb_mutex); |
6bb40dd1 ID |
274 | intf->beacon = entry; |
275 | ||
1ed32e4f JB |
276 | if (vif->type == NL80211_IFTYPE_AP) |
277 | memcpy(&intf->bssid, vif->addr, ETH_ALEN); | |
278 | memcpy(&intf->mac, vif->addr, ETH_ALEN); | |
95ea3627 ID |
279 | |
280 | /* | |
95ea3627 | 281 | * The MAC adddress must be configured after the device |
4150c572 JB |
282 | * has been initialized. Otherwise the device can reset |
283 | * the MAC registers. | |
95ea3627 | 284 | */ |
1ed32e4f | 285 | rt2x00lib_config_intf(rt2x00dev, intf, vif->type, intf->mac, NULL); |
95ea3627 | 286 | |
e0b005fa ID |
287 | /* |
288 | * Some filters depend on the current working mode. We can force | |
289 | * an update during the next configure_filter() run by mac80211 by | |
290 | * resetting the current packet_filter state. | |
291 | */ | |
292 | rt2x00dev->packet_filter = 0; | |
293 | ||
95ea3627 ID |
294 | return 0; |
295 | } | |
296 | EXPORT_SYMBOL_GPL(rt2x00mac_add_interface); | |
297 | ||
298 | void rt2x00mac_remove_interface(struct ieee80211_hw *hw, | |
1ed32e4f | 299 | struct ieee80211_vif *vif) |
95ea3627 ID |
300 | { |
301 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
1ed32e4f | 302 | struct rt2x00_intf *intf = vif_to_intf(vif); |
95ea3627 ID |
303 | |
304 | /* | |
066cb637 ID |
305 | * Don't allow interfaces to be remove while |
306 | * either the device has disappeared or when | |
307 | * no interface is present. | |
95ea3627 | 308 | */ |
0262ab0d | 309 | if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags) || |
1ed32e4f JB |
310 | (vif->type == NL80211_IFTYPE_AP && !rt2x00dev->intf_ap_count) || |
311 | (vif->type != NL80211_IFTYPE_AP && !rt2x00dev->intf_sta_count)) | |
95ea3627 ID |
312 | return; |
313 | ||
1ed32e4f | 314 | if (vif->type == NL80211_IFTYPE_AP) |
6bb40dd1 ID |
315 | rt2x00dev->intf_ap_count--; |
316 | else | |
317 | rt2x00dev->intf_sta_count--; | |
318 | ||
319 | /* | |
320 | * Release beacon entry so it is available for | |
321 | * new interfaces again. | |
322 | */ | |
0262ab0d | 323 | clear_bit(ENTRY_BCN_ASSIGNED, &intf->beacon->flags); |
95ea3627 ID |
324 | |
325 | /* | |
326 | * Make sure the bssid and mac address registers | |
327 | * are cleared to prevent false ACKing of frames. | |
328 | */ | |
6bb40dd1 | 329 | rt2x00lib_config_intf(rt2x00dev, intf, |
05c914fe | 330 | NL80211_IFTYPE_UNSPECIFIED, NULL, NULL); |
95ea3627 ID |
331 | } |
332 | EXPORT_SYMBOL_GPL(rt2x00mac_remove_interface); | |
333 | ||
e8975581 | 334 | int rt2x00mac_config(struct ieee80211_hw *hw, u32 changed) |
95ea3627 ID |
335 | { |
336 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
e8975581 | 337 | struct ieee80211_conf *conf = &hw->conf; |
95ea3627 ID |
338 | |
339 | /* | |
49513481 | 340 | * mac80211 might be calling this function while we are trying |
066cb637 | 341 | * to remove the device or perhaps suspending it. |
95ea3627 | 342 | */ |
0262ab0d | 343 | if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags)) |
95ea3627 ID |
344 | return 0; |
345 | ||
346 | /* | |
bdfa500b ID |
347 | * Some configuration parameters (e.g. channel and antenna values) can |
348 | * only be set when the radio is enabled, but do require the RX to | |
349 | * be off. | |
95ea3627 | 350 | */ |
bdfa500b | 351 | rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_OFF); |
95ea3627 | 352 | |
bdfa500b ID |
353 | /* |
354 | * When we've just turned on the radio, we want to reprogram | |
355 | * everything to ensure a consistent state | |
356 | */ | |
357 | rt2x00lib_config(rt2x00dev, conf, changed); | |
74c0ee9b | 358 | |
bdfa500b ID |
359 | /* |
360 | * After the radio has been enabled we need to configure | |
361 | * the antenna to the default settings. rt2x00lib_config_antenna() | |
362 | * should determine if any action should be taken based on | |
363 | * checking if diversity has been enabled or no antenna changes | |
364 | * have been made since the last configuration change. | |
365 | */ | |
366 | rt2x00lib_config_antenna(rt2x00dev, rt2x00dev->default_ant); | |
95ea3627 | 367 | |
bdfa500b ID |
368 | /* Turn RX back on */ |
369 | rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_ON); | |
95ea3627 ID |
370 | |
371 | return 0; | |
372 | } | |
373 | EXPORT_SYMBOL_GPL(rt2x00mac_config); | |
374 | ||
3a643d24 ID |
375 | void rt2x00mac_configure_filter(struct ieee80211_hw *hw, |
376 | unsigned int changed_flags, | |
377 | unsigned int *total_flags, | |
3ac64bee | 378 | u64 multicast) |
3a643d24 ID |
379 | { |
380 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
381 | ||
382 | /* | |
383 | * Mask off any flags we are going to ignore | |
384 | * from the total_flags field. | |
385 | */ | |
386 | *total_flags &= | |
387 | FIF_ALLMULTI | | |
388 | FIF_FCSFAIL | | |
389 | FIF_PLCPFAIL | | |
390 | FIF_CONTROL | | |
1afcfd54 | 391 | FIF_PSPOLL | |
3a643d24 ID |
392 | FIF_OTHER_BSS | |
393 | FIF_PROMISC_IN_BSS; | |
394 | ||
395 | /* | |
396 | * Apply some rules to the filters: | |
397 | * - Some filters imply different filters to be set. | |
398 | * - Some things we can't filter out at all. | |
399 | * - Multicast filter seems to kill broadcast traffic so never use it. | |
400 | */ | |
401 | *total_flags |= FIF_ALLMULTI; | |
402 | if (*total_flags & FIF_OTHER_BSS || | |
403 | *total_flags & FIF_PROMISC_IN_BSS) | |
404 | *total_flags |= FIF_PROMISC_IN_BSS | FIF_OTHER_BSS; | |
405 | ||
1afcfd54 IP |
406 | /* |
407 | * If the device has a single filter for all control frames, | |
408 | * FIF_CONTROL and FIF_PSPOLL flags imply each other. | |
409 | * And if the device has more than one filter for control frames | |
410 | * of different types, but has no a separate filter for PS Poll frames, | |
411 | * FIF_CONTROL flag implies FIF_PSPOLL. | |
412 | */ | |
413 | if (!test_bit(DRIVER_SUPPORT_CONTROL_FILTERS, &rt2x00dev->flags)) { | |
414 | if (*total_flags & FIF_CONTROL || *total_flags & FIF_PSPOLL) | |
415 | *total_flags |= FIF_CONTROL | FIF_PSPOLL; | |
416 | } | |
417 | if (!test_bit(DRIVER_SUPPORT_CONTROL_FILTER_PSPOLL, &rt2x00dev->flags)) { | |
418 | if (*total_flags & FIF_CONTROL) | |
419 | *total_flags |= FIF_PSPOLL; | |
420 | } | |
421 | ||
3a643d24 ID |
422 | /* |
423 | * Check if there is any work left for us. | |
424 | */ | |
425 | if (rt2x00dev->packet_filter == *total_flags) | |
426 | return; | |
427 | rt2x00dev->packet_filter = *total_flags; | |
428 | ||
afa62042 | 429 | rt2x00dev->ops->lib->config_filter(rt2x00dev, *total_flags); |
3a643d24 ID |
430 | } |
431 | EXPORT_SYMBOL_GPL(rt2x00mac_configure_filter); | |
432 | ||
ad2f34b4 ID |
433 | int rt2x00mac_set_tim(struct ieee80211_hw *hw, struct ieee80211_sta *sta, |
434 | bool set) | |
435 | { | |
436 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
437 | ||
438 | rt2x00lib_beacondone(rt2x00dev); | |
439 | return 0; | |
440 | } | |
441 | EXPORT_SYMBOL_GPL(rt2x00mac_set_tim); | |
442 | ||
2bb057d0 | 443 | #ifdef CONFIG_RT2X00_LIB_CRYPTO |
7b40982e ID |
444 | static void memcpy_tkip(struct rt2x00lib_crypto *crypto, u8 *key, u8 key_len) |
445 | { | |
446 | if (key_len > NL80211_TKIP_DATA_OFFSET_ENCR_KEY) | |
447 | memcpy(&crypto->key, | |
448 | &key[NL80211_TKIP_DATA_OFFSET_ENCR_KEY], | |
449 | sizeof(crypto->key)); | |
450 | ||
451 | if (key_len > NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY) | |
452 | memcpy(&crypto->tx_mic, | |
453 | &key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY], | |
454 | sizeof(crypto->tx_mic)); | |
455 | ||
456 | if (key_len > NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY) | |
457 | memcpy(&crypto->rx_mic, | |
458 | &key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY], | |
459 | sizeof(crypto->rx_mic)); | |
460 | } | |
461 | ||
2bb057d0 | 462 | int rt2x00mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, |
dc822b5d | 463 | struct ieee80211_vif *vif, struct ieee80211_sta *sta, |
2bb057d0 ID |
464 | struct ieee80211_key_conf *key) |
465 | { | |
466 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
dc822b5d | 467 | struct rt2x00_intf *intf = vif_to_intf(vif); |
2bb057d0 ID |
468 | int (*set_key) (struct rt2x00_dev *rt2x00dev, |
469 | struct rt2x00lib_crypto *crypto, | |
470 | struct ieee80211_key_conf *key); | |
471 | struct rt2x00lib_crypto crypto; | |
dc822b5d JB |
472 | static const u8 bcast_addr[ETH_ALEN] = |
473 | { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, }; | |
2bb057d0 | 474 | |
8058409c ID |
475 | if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags)) |
476 | return 0; | |
477 | else if (!test_bit(CONFIG_SUPPORT_HW_CRYPTO, &rt2x00dev->flags)) | |
2bb057d0 ID |
478 | return -EOPNOTSUPP; |
479 | else if (key->keylen > 32) | |
480 | return -ENOSPC; | |
481 | ||
482 | memset(&crypto, 0, sizeof(crypto)); | |
483 | ||
484 | /* | |
485 | * When in STA mode, bssidx is always 0 otherwise local_address[5] | |
486 | * contains the bss number, see BSS_ID_MASK comments for details. | |
487 | */ | |
488 | if (rt2x00dev->intf_sta_count) | |
489 | crypto.bssidx = 0; | |
490 | else | |
dc822b5d | 491 | crypto.bssidx = intf->mac[5] & (rt2x00dev->ops->max_ap_intf - 1); |
2bb057d0 ID |
492 | |
493 | crypto.cipher = rt2x00crypto_key_to_cipher(key); | |
494 | if (crypto.cipher == CIPHER_NONE) | |
495 | return -EOPNOTSUPP; | |
496 | ||
497 | crypto.cmd = cmd; | |
dc822b5d JB |
498 | |
499 | if (sta) { | |
500 | /* some drivers need the AID */ | |
501 | crypto.aid = sta->aid; | |
502 | crypto.address = sta->addr; | |
503 | } else | |
504 | crypto.address = bcast_addr; | |
2bb057d0 | 505 | |
7b40982e ID |
506 | if (crypto.cipher == CIPHER_TKIP) |
507 | memcpy_tkip(&crypto, &key->key[0], key->keylen); | |
508 | else | |
2bb057d0 | 509 | memcpy(&crypto.key, &key->key[0], key->keylen); |
2bb057d0 ID |
510 | /* |
511 | * Each BSS has a maximum of 4 shared keys. | |
512 | * Shared key index values: | |
513 | * 0) BSS0 key0 | |
514 | * 1) BSS0 key1 | |
515 | * ... | |
516 | * 4) BSS1 key0 | |
517 | * ... | |
518 | * 8) BSS2 key0 | |
519 | * ... | |
520 | * Both pairwise as shared key indeces are determined by | |
521 | * driver. This is required because the hardware requires | |
522 | * keys to be assigned in correct order (When key 1 is | |
523 | * provided but key 0 is not, then the key is not found | |
524 | * by the hardware during RX). | |
525 | */ | |
acaf908d ID |
526 | if (cmd == SET_KEY) |
527 | key->hw_key_idx = 0; | |
2bb057d0 ID |
528 | |
529 | if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) | |
530 | set_key = rt2x00dev->ops->lib->config_pairwise_key; | |
531 | else | |
532 | set_key = rt2x00dev->ops->lib->config_shared_key; | |
533 | ||
534 | if (!set_key) | |
535 | return -EOPNOTSUPP; | |
536 | ||
537 | return set_key(rt2x00dev, &crypto, key); | |
538 | } | |
539 | EXPORT_SYMBOL_GPL(rt2x00mac_set_key); | |
540 | #endif /* CONFIG_RT2X00_LIB_CRYPTO */ | |
541 | ||
95ea3627 ID |
542 | int rt2x00mac_get_stats(struct ieee80211_hw *hw, |
543 | struct ieee80211_low_level_stats *stats) | |
544 | { | |
545 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
546 | ||
547 | /* | |
548 | * The dot11ACKFailureCount, dot11RTSFailureCount and | |
549 | * dot11RTSSuccessCount are updated in interrupt time. | |
550 | * dot11FCSErrorCount is updated in the link tuner. | |
551 | */ | |
552 | memcpy(stats, &rt2x00dev->low_level_stats, sizeof(*stats)); | |
553 | ||
554 | return 0; | |
555 | } | |
556 | EXPORT_SYMBOL_GPL(rt2x00mac_get_stats); | |
557 | ||
471b3efd JB |
558 | void rt2x00mac_bss_info_changed(struct ieee80211_hw *hw, |
559 | struct ieee80211_vif *vif, | |
560 | struct ieee80211_bss_conf *bss_conf, | |
561 | u32 changes) | |
5c58ee51 ID |
562 | { |
563 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
6bb40dd1 | 564 | struct rt2x00_intf *intf = vif_to_intf(vif); |
2d0ddec5 JB |
565 | int update_bssid = 0; |
566 | ||
567 | /* | |
49513481 | 568 | * mac80211 might be calling this function while we are trying |
2d0ddec5 JB |
569 | * to remove the device or perhaps suspending it. |
570 | */ | |
571 | if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags)) | |
572 | return; | |
573 | ||
574 | spin_lock(&intf->lock); | |
575 | ||
576 | /* | |
577 | * conf->bssid can be NULL if coming from the internal | |
578 | * beacon update routine. | |
579 | */ | |
580 | if (changes & BSS_CHANGED_BSSID) { | |
581 | update_bssid = 1; | |
582 | memcpy(&intf->bssid, bss_conf->bssid, ETH_ALEN); | |
583 | } | |
584 | ||
585 | spin_unlock(&intf->lock); | |
586 | ||
587 | /* | |
588 | * Call rt2x00_config_intf() outside of the spinlock context since | |
589 | * the call will sleep for USB drivers. By using the ieee80211_if_conf | |
590 | * values as arguments we make keep access to rt2x00_intf thread safe | |
591 | * even without the lock. | |
592 | */ | |
593 | if (changes & BSS_CHANGED_BSSID) | |
594 | rt2x00lib_config_intf(rt2x00dev, intf, vif->type, NULL, | |
595 | update_bssid ? bss_conf->bssid : NULL); | |
596 | ||
597 | /* | |
598 | * Update the beacon. | |
599 | */ | |
600 | if (changes & (BSS_CHANGED_BEACON | BSS_CHANGED_BEACON_ENABLED)) | |
601 | rt2x00queue_update_beacon(rt2x00dev, vif, | |
602 | bss_conf->enable_beacon); | |
5c58ee51 ID |
603 | |
604 | /* | |
6bb40dd1 ID |
605 | * When the association status has changed we must reset the link |
606 | * tuner counter. This is because some drivers determine if they | |
607 | * should perform link tuning based on the number of seconds | |
608 | * while associated or not associated. | |
5c58ee51 | 609 | */ |
6bb40dd1 ID |
610 | if (changes & BSS_CHANGED_ASSOC) { |
611 | rt2x00dev->link.count = 0; | |
5c58ee51 | 612 | |
6bb40dd1 ID |
613 | if (bss_conf->assoc) |
614 | rt2x00dev->intf_associated++; | |
615 | else | |
616 | rt2x00dev->intf_associated--; | |
a2e1d52a | 617 | |
d904dc17 | 618 | rt2x00leds_led_assoc(rt2x00dev, !!rt2x00dev->intf_associated); |
6bb40dd1 | 619 | } |
5c58ee51 | 620 | |
6bb40dd1 | 621 | /* |
72810379 ID |
622 | * When the erp information has changed, we should perform |
623 | * additional configuration steps. For all other changes we are done. | |
6bb40dd1 | 624 | */ |
d904dc17 ID |
625 | if (changes & ~(BSS_CHANGED_ASSOC | BSS_CHANGED_HT)) |
626 | rt2x00lib_config_erp(rt2x00dev, intf, bss_conf); | |
5c58ee51 | 627 | } |
471b3efd | 628 | EXPORT_SYMBOL_GPL(rt2x00mac_bss_info_changed); |
5c58ee51 | 629 | |
e100bb64 | 630 | int rt2x00mac_conf_tx(struct ieee80211_hw *hw, u16 queue_idx, |
95ea3627 ID |
631 | const struct ieee80211_tx_queue_params *params) |
632 | { | |
633 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
181d6902 | 634 | struct data_queue *queue; |
95ea3627 | 635 | |
181d6902 ID |
636 | queue = rt2x00queue_get_queue(rt2x00dev, queue_idx); |
637 | if (unlikely(!queue)) | |
95ea3627 ID |
638 | return -EINVAL; |
639 | ||
640 | /* | |
641 | * The passed variables are stored as real value ((2^n)-1). | |
642 | * Ralink registers require to know the bit number 'n'. | |
643 | */ | |
3b3618ad | 644 | if (params->cw_min > 0) |
181d6902 | 645 | queue->cw_min = fls(params->cw_min); |
95ea3627 | 646 | else |
181d6902 | 647 | queue->cw_min = 5; /* cw_min: 2^5 = 32. */ |
95ea3627 | 648 | |
3b3618ad | 649 | if (params->cw_max > 0) |
181d6902 | 650 | queue->cw_max = fls(params->cw_max); |
95ea3627 | 651 | else |
181d6902 | 652 | queue->cw_max = 10; /* cw_min: 2^10 = 1024. */ |
95ea3627 | 653 | |
0b57664c | 654 | queue->aifs = params->aifs; |
2af0a570 | 655 | queue->txop = params->txop; |
95ea3627 ID |
656 | |
657 | INFO(rt2x00dev, | |
2af0a570 ID |
658 | "Configured TX queue %d - CWmin: %d, CWmax: %d, Aifs: %d, TXop: %d.\n", |
659 | queue_idx, queue->cw_min, queue->cw_max, queue->aifs, queue->txop); | |
95ea3627 ID |
660 | |
661 | return 0; | |
662 | } | |
663 | EXPORT_SYMBOL_GPL(rt2x00mac_conf_tx); | |
e47a5cdd ID |
664 | |
665 | void rt2x00mac_rfkill_poll(struct ieee80211_hw *hw) | |
666 | { | |
667 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
73077c85 | 668 | bool active = !!rt2x00dev->ops->lib->rfkill_poll(rt2x00dev); |
e47a5cdd | 669 | |
73077c85 | 670 | wiphy_rfkill_set_hw_state(hw->wiphy, !active); |
e47a5cdd ID |
671 | } |
672 | EXPORT_SYMBOL_GPL(rt2x00mac_rfkill_poll); |