Commit | Line | Data |
---|---|---|
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); |
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 | ||
7351c6bd | 155 | if (rt2x00queue_write_tx_frame(queue, skb, false)) |
b9740c23 DW |
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); |
17512dc3 | 276 | mutex_init(&intf->beacon_skb_mutex); |
6bb40dd1 ID |
277 | intf->beacon = entry; |
278 | ||
05c914fe | 279 | if (conf->type == NL80211_IFTYPE_AP) |
4150c572 JB |
280 | memcpy(&intf->bssid, conf->mac_addr, ETH_ALEN); |
281 | memcpy(&intf->mac, conf->mac_addr, ETH_ALEN); | |
95ea3627 ID |
282 | |
283 | /* | |
95ea3627 | 284 | * The MAC adddress must be configured after the device |
4150c572 JB |
285 | * has been initialized. Otherwise the device can reset |
286 | * the MAC registers. | |
95ea3627 | 287 | */ |
6bb40dd1 | 288 | rt2x00lib_config_intf(rt2x00dev, intf, conf->type, intf->mac, NULL); |
95ea3627 | 289 | |
e0b005fa ID |
290 | /* |
291 | * Some filters depend on the current working mode. We can force | |
292 | * an update during the next configure_filter() run by mac80211 by | |
293 | * resetting the current packet_filter state. | |
294 | */ | |
295 | rt2x00dev->packet_filter = 0; | |
296 | ||
95ea3627 ID |
297 | return 0; |
298 | } | |
299 | EXPORT_SYMBOL_GPL(rt2x00mac_add_interface); | |
300 | ||
301 | void rt2x00mac_remove_interface(struct ieee80211_hw *hw, | |
302 | struct ieee80211_if_init_conf *conf) | |
303 | { | |
304 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
6bb40dd1 | 305 | struct rt2x00_intf *intf = vif_to_intf(conf->vif); |
95ea3627 ID |
306 | |
307 | /* | |
066cb637 ID |
308 | * Don't allow interfaces to be remove while |
309 | * either the device has disappeared or when | |
310 | * no interface is present. | |
95ea3627 | 311 | */ |
0262ab0d | 312 | if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags) || |
05c914fe JB |
313 | (conf->type == NL80211_IFTYPE_AP && !rt2x00dev->intf_ap_count) || |
314 | (conf->type != NL80211_IFTYPE_AP && !rt2x00dev->intf_sta_count)) | |
95ea3627 ID |
315 | return; |
316 | ||
05c914fe | 317 | if (conf->type == NL80211_IFTYPE_AP) |
6bb40dd1 ID |
318 | rt2x00dev->intf_ap_count--; |
319 | else | |
320 | rt2x00dev->intf_sta_count--; | |
321 | ||
322 | /* | |
323 | * Release beacon entry so it is available for | |
324 | * new interfaces again. | |
325 | */ | |
0262ab0d | 326 | clear_bit(ENTRY_BCN_ASSIGNED, &intf->beacon->flags); |
95ea3627 ID |
327 | |
328 | /* | |
329 | * Make sure the bssid and mac address registers | |
330 | * are cleared to prevent false ACKing of frames. | |
331 | */ | |
6bb40dd1 | 332 | rt2x00lib_config_intf(rt2x00dev, intf, |
05c914fe | 333 | NL80211_IFTYPE_UNSPECIFIED, NULL, NULL); |
95ea3627 ID |
334 | } |
335 | EXPORT_SYMBOL_GPL(rt2x00mac_remove_interface); | |
336 | ||
e8975581 | 337 | int rt2x00mac_config(struct ieee80211_hw *hw, u32 changed) |
95ea3627 ID |
338 | { |
339 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
e8975581 | 340 | struct ieee80211_conf *conf = &hw->conf; |
95ea3627 ID |
341 | |
342 | /* | |
49513481 | 343 | * mac80211 might be calling this function while we are trying |
066cb637 | 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 | /* | |
bdfa500b ID |
350 | * Some configuration parameters (e.g. channel and antenna values) can |
351 | * only be set when the radio is enabled, but do require the RX to | |
352 | * be off. | |
95ea3627 | 353 | */ |
bdfa500b | 354 | rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_OFF); |
95ea3627 | 355 | |
bdfa500b ID |
356 | /* |
357 | * When we've just turned on the radio, we want to reprogram | |
358 | * everything to ensure a consistent state | |
359 | */ | |
360 | rt2x00lib_config(rt2x00dev, conf, changed); | |
74c0ee9b | 361 | |
bdfa500b ID |
362 | /* |
363 | * After the radio has been enabled we need to configure | |
364 | * the antenna to the default settings. rt2x00lib_config_antenna() | |
365 | * should determine if any action should be taken based on | |
366 | * checking if diversity has been enabled or no antenna changes | |
367 | * have been made since the last configuration change. | |
368 | */ | |
369 | rt2x00lib_config_antenna(rt2x00dev, rt2x00dev->default_ant); | |
95ea3627 | 370 | |
bdfa500b ID |
371 | /* Turn RX back on */ |
372 | rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_ON); | |
95ea3627 ID |
373 | |
374 | return 0; | |
375 | } | |
376 | EXPORT_SYMBOL_GPL(rt2x00mac_config); | |
377 | ||
3a643d24 ID |
378 | void rt2x00mac_configure_filter(struct ieee80211_hw *hw, |
379 | unsigned int changed_flags, | |
380 | unsigned int *total_flags, | |
3ac64bee | 381 | u64 multicast) |
3a643d24 ID |
382 | { |
383 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
384 | ||
385 | /* | |
386 | * Mask off any flags we are going to ignore | |
387 | * from the total_flags field. | |
388 | */ | |
389 | *total_flags &= | |
390 | FIF_ALLMULTI | | |
391 | FIF_FCSFAIL | | |
392 | FIF_PLCPFAIL | | |
393 | FIF_CONTROL | | |
1afcfd54 | 394 | FIF_PSPOLL | |
3a643d24 ID |
395 | FIF_OTHER_BSS | |
396 | FIF_PROMISC_IN_BSS; | |
397 | ||
398 | /* | |
399 | * Apply some rules to the filters: | |
400 | * - Some filters imply different filters to be set. | |
401 | * - Some things we can't filter out at all. | |
402 | * - Multicast filter seems to kill broadcast traffic so never use it. | |
403 | */ | |
404 | *total_flags |= FIF_ALLMULTI; | |
405 | if (*total_flags & FIF_OTHER_BSS || | |
406 | *total_flags & FIF_PROMISC_IN_BSS) | |
407 | *total_flags |= FIF_PROMISC_IN_BSS | FIF_OTHER_BSS; | |
408 | ||
1afcfd54 IP |
409 | /* |
410 | * If the device has a single filter for all control frames, | |
411 | * FIF_CONTROL and FIF_PSPOLL flags imply each other. | |
412 | * And if the device has more than one filter for control frames | |
413 | * of different types, but has no a separate filter for PS Poll frames, | |
414 | * FIF_CONTROL flag implies FIF_PSPOLL. | |
415 | */ | |
416 | if (!test_bit(DRIVER_SUPPORT_CONTROL_FILTERS, &rt2x00dev->flags)) { | |
417 | if (*total_flags & FIF_CONTROL || *total_flags & FIF_PSPOLL) | |
418 | *total_flags |= FIF_CONTROL | FIF_PSPOLL; | |
419 | } | |
420 | if (!test_bit(DRIVER_SUPPORT_CONTROL_FILTER_PSPOLL, &rt2x00dev->flags)) { | |
421 | if (*total_flags & FIF_CONTROL) | |
422 | *total_flags |= FIF_PSPOLL; | |
423 | } | |
424 | ||
3a643d24 ID |
425 | /* |
426 | * Check if there is any work left for us. | |
427 | */ | |
428 | if (rt2x00dev->packet_filter == *total_flags) | |
429 | return; | |
430 | rt2x00dev->packet_filter = *total_flags; | |
431 | ||
afa62042 | 432 | rt2x00dev->ops->lib->config_filter(rt2x00dev, *total_flags); |
3a643d24 ID |
433 | } |
434 | EXPORT_SYMBOL_GPL(rt2x00mac_configure_filter); | |
435 | ||
ad2f34b4 ID |
436 | int rt2x00mac_set_tim(struct ieee80211_hw *hw, struct ieee80211_sta *sta, |
437 | bool set) | |
438 | { | |
439 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
440 | ||
441 | rt2x00lib_beacondone(rt2x00dev); | |
442 | return 0; | |
443 | } | |
444 | EXPORT_SYMBOL_GPL(rt2x00mac_set_tim); | |
445 | ||
2bb057d0 | 446 | #ifdef CONFIG_RT2X00_LIB_CRYPTO |
7b40982e ID |
447 | static void memcpy_tkip(struct rt2x00lib_crypto *crypto, u8 *key, u8 key_len) |
448 | { | |
449 | if (key_len > NL80211_TKIP_DATA_OFFSET_ENCR_KEY) | |
450 | memcpy(&crypto->key, | |
451 | &key[NL80211_TKIP_DATA_OFFSET_ENCR_KEY], | |
452 | sizeof(crypto->key)); | |
453 | ||
454 | if (key_len > NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY) | |
455 | memcpy(&crypto->tx_mic, | |
456 | &key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY], | |
457 | sizeof(crypto->tx_mic)); | |
458 | ||
459 | if (key_len > NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY) | |
460 | memcpy(&crypto->rx_mic, | |
461 | &key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY], | |
462 | sizeof(crypto->rx_mic)); | |
463 | } | |
464 | ||
2bb057d0 | 465 | int rt2x00mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, |
dc822b5d | 466 | struct ieee80211_vif *vif, struct ieee80211_sta *sta, |
2bb057d0 ID |
467 | struct ieee80211_key_conf *key) |
468 | { | |
469 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
dc822b5d | 470 | struct rt2x00_intf *intf = vif_to_intf(vif); |
2bb057d0 ID |
471 | int (*set_key) (struct rt2x00_dev *rt2x00dev, |
472 | struct rt2x00lib_crypto *crypto, | |
473 | struct ieee80211_key_conf *key); | |
474 | struct rt2x00lib_crypto crypto; | |
dc822b5d JB |
475 | static const u8 bcast_addr[ETH_ALEN] = |
476 | { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, }; | |
2bb057d0 | 477 | |
8058409c ID |
478 | if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags)) |
479 | return 0; | |
480 | else if (!test_bit(CONFIG_SUPPORT_HW_CRYPTO, &rt2x00dev->flags)) | |
2bb057d0 ID |
481 | return -EOPNOTSUPP; |
482 | else if (key->keylen > 32) | |
483 | return -ENOSPC; | |
484 | ||
485 | memset(&crypto, 0, sizeof(crypto)); | |
486 | ||
487 | /* | |
488 | * When in STA mode, bssidx is always 0 otherwise local_address[5] | |
489 | * contains the bss number, see BSS_ID_MASK comments for details. | |
490 | */ | |
491 | if (rt2x00dev->intf_sta_count) | |
492 | crypto.bssidx = 0; | |
493 | else | |
dc822b5d | 494 | crypto.bssidx = intf->mac[5] & (rt2x00dev->ops->max_ap_intf - 1); |
2bb057d0 ID |
495 | |
496 | crypto.cipher = rt2x00crypto_key_to_cipher(key); | |
497 | if (crypto.cipher == CIPHER_NONE) | |
498 | return -EOPNOTSUPP; | |
499 | ||
500 | crypto.cmd = cmd; | |
dc822b5d JB |
501 | |
502 | if (sta) { | |
503 | /* some drivers need the AID */ | |
504 | crypto.aid = sta->aid; | |
505 | crypto.address = sta->addr; | |
506 | } else | |
507 | crypto.address = bcast_addr; | |
2bb057d0 | 508 | |
7b40982e ID |
509 | if (crypto.cipher == CIPHER_TKIP) |
510 | memcpy_tkip(&crypto, &key->key[0], key->keylen); | |
511 | else | |
2bb057d0 | 512 | memcpy(&crypto.key, &key->key[0], key->keylen); |
2bb057d0 ID |
513 | /* |
514 | * Each BSS has a maximum of 4 shared keys. | |
515 | * Shared key index values: | |
516 | * 0) BSS0 key0 | |
517 | * 1) BSS0 key1 | |
518 | * ... | |
519 | * 4) BSS1 key0 | |
520 | * ... | |
521 | * 8) BSS2 key0 | |
522 | * ... | |
523 | * Both pairwise as shared key indeces are determined by | |
524 | * driver. This is required because the hardware requires | |
525 | * keys to be assigned in correct order (When key 1 is | |
526 | * provided but key 0 is not, then the key is not found | |
527 | * by the hardware during RX). | |
528 | */ | |
acaf908d ID |
529 | if (cmd == SET_KEY) |
530 | key->hw_key_idx = 0; | |
2bb057d0 ID |
531 | |
532 | if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) | |
533 | set_key = rt2x00dev->ops->lib->config_pairwise_key; | |
534 | else | |
535 | set_key = rt2x00dev->ops->lib->config_shared_key; | |
536 | ||
537 | if (!set_key) | |
538 | return -EOPNOTSUPP; | |
539 | ||
540 | return set_key(rt2x00dev, &crypto, key); | |
541 | } | |
542 | EXPORT_SYMBOL_GPL(rt2x00mac_set_key); | |
543 | #endif /* CONFIG_RT2X00_LIB_CRYPTO */ | |
544 | ||
95ea3627 ID |
545 | int rt2x00mac_get_stats(struct ieee80211_hw *hw, |
546 | struct ieee80211_low_level_stats *stats) | |
547 | { | |
548 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
549 | ||
550 | /* | |
551 | * The dot11ACKFailureCount, dot11RTSFailureCount and | |
552 | * dot11RTSSuccessCount are updated in interrupt time. | |
553 | * dot11FCSErrorCount is updated in the link tuner. | |
554 | */ | |
555 | memcpy(stats, &rt2x00dev->low_level_stats, sizeof(*stats)); | |
556 | ||
557 | return 0; | |
558 | } | |
559 | EXPORT_SYMBOL_GPL(rt2x00mac_get_stats); | |
560 | ||
561 | int rt2x00mac_get_tx_stats(struct ieee80211_hw *hw, | |
562 | struct ieee80211_tx_queue_stats *stats) | |
563 | { | |
564 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
565 | unsigned int i; | |
566 | ||
61448f88 | 567 | for (i = 0; i < rt2x00dev->ops->tx_queues; i++) { |
57ffc589 JB |
568 | stats[i].len = rt2x00dev->tx[i].length; |
569 | stats[i].limit = rt2x00dev->tx[i].limit; | |
570 | stats[i].count = rt2x00dev->tx[i].count; | |
181d6902 | 571 | } |
95ea3627 ID |
572 | |
573 | return 0; | |
574 | } | |
575 | EXPORT_SYMBOL_GPL(rt2x00mac_get_tx_stats); | |
576 | ||
471b3efd JB |
577 | void rt2x00mac_bss_info_changed(struct ieee80211_hw *hw, |
578 | struct ieee80211_vif *vif, | |
579 | struct ieee80211_bss_conf *bss_conf, | |
580 | u32 changes) | |
5c58ee51 ID |
581 | { |
582 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
6bb40dd1 | 583 | struct rt2x00_intf *intf = vif_to_intf(vif); |
2d0ddec5 JB |
584 | int update_bssid = 0; |
585 | ||
586 | /* | |
49513481 | 587 | * mac80211 might be calling this function while we are trying |
2d0ddec5 JB |
588 | * to remove the device or perhaps suspending it. |
589 | */ | |
590 | if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags)) | |
591 | return; | |
592 | ||
593 | spin_lock(&intf->lock); | |
594 | ||
595 | /* | |
596 | * conf->bssid can be NULL if coming from the internal | |
597 | * beacon update routine. | |
598 | */ | |
599 | if (changes & BSS_CHANGED_BSSID) { | |
600 | update_bssid = 1; | |
601 | memcpy(&intf->bssid, bss_conf->bssid, ETH_ALEN); | |
602 | } | |
603 | ||
604 | spin_unlock(&intf->lock); | |
605 | ||
606 | /* | |
607 | * Call rt2x00_config_intf() outside of the spinlock context since | |
608 | * the call will sleep for USB drivers. By using the ieee80211_if_conf | |
609 | * values as arguments we make keep access to rt2x00_intf thread safe | |
610 | * even without the lock. | |
611 | */ | |
612 | if (changes & BSS_CHANGED_BSSID) | |
613 | rt2x00lib_config_intf(rt2x00dev, intf, vif->type, NULL, | |
614 | update_bssid ? bss_conf->bssid : NULL); | |
615 | ||
616 | /* | |
617 | * Update the beacon. | |
618 | */ | |
619 | if (changes & (BSS_CHANGED_BEACON | BSS_CHANGED_BEACON_ENABLED)) | |
620 | rt2x00queue_update_beacon(rt2x00dev, vif, | |
621 | bss_conf->enable_beacon); | |
5c58ee51 ID |
622 | |
623 | /* | |
6bb40dd1 ID |
624 | * When the association status has changed we must reset the link |
625 | * tuner counter. This is because some drivers determine if they | |
626 | * should perform link tuning based on the number of seconds | |
627 | * while associated or not associated. | |
5c58ee51 | 628 | */ |
6bb40dd1 ID |
629 | if (changes & BSS_CHANGED_ASSOC) { |
630 | rt2x00dev->link.count = 0; | |
5c58ee51 | 631 | |
6bb40dd1 ID |
632 | if (bss_conf->assoc) |
633 | rt2x00dev->intf_associated++; | |
634 | else | |
635 | rt2x00dev->intf_associated--; | |
a2e1d52a | 636 | |
d904dc17 | 637 | rt2x00leds_led_assoc(rt2x00dev, !!rt2x00dev->intf_associated); |
6bb40dd1 | 638 | } |
5c58ee51 | 639 | |
6bb40dd1 | 640 | /* |
72810379 ID |
641 | * When the erp information has changed, we should perform |
642 | * additional configuration steps. For all other changes we are done. | |
6bb40dd1 | 643 | */ |
d904dc17 ID |
644 | if (changes & ~(BSS_CHANGED_ASSOC | BSS_CHANGED_HT)) |
645 | rt2x00lib_config_erp(rt2x00dev, intf, bss_conf); | |
5c58ee51 | 646 | } |
471b3efd | 647 | EXPORT_SYMBOL_GPL(rt2x00mac_bss_info_changed); |
5c58ee51 | 648 | |
e100bb64 | 649 | int rt2x00mac_conf_tx(struct ieee80211_hw *hw, u16 queue_idx, |
95ea3627 ID |
650 | const struct ieee80211_tx_queue_params *params) |
651 | { | |
652 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
181d6902 | 653 | struct data_queue *queue; |
95ea3627 | 654 | |
181d6902 ID |
655 | queue = rt2x00queue_get_queue(rt2x00dev, queue_idx); |
656 | if (unlikely(!queue)) | |
95ea3627 ID |
657 | return -EINVAL; |
658 | ||
659 | /* | |
660 | * The passed variables are stored as real value ((2^n)-1). | |
661 | * Ralink registers require to know the bit number 'n'. | |
662 | */ | |
3b3618ad | 663 | if (params->cw_min > 0) |
181d6902 | 664 | queue->cw_min = fls(params->cw_min); |
95ea3627 | 665 | else |
181d6902 | 666 | queue->cw_min = 5; /* cw_min: 2^5 = 32. */ |
95ea3627 | 667 | |
3b3618ad | 668 | if (params->cw_max > 0) |
181d6902 | 669 | queue->cw_max = fls(params->cw_max); |
95ea3627 | 670 | else |
181d6902 | 671 | queue->cw_max = 10; /* cw_min: 2^10 = 1024. */ |
95ea3627 | 672 | |
0b57664c | 673 | queue->aifs = params->aifs; |
2af0a570 | 674 | queue->txop = params->txop; |
95ea3627 ID |
675 | |
676 | INFO(rt2x00dev, | |
2af0a570 ID |
677 | "Configured TX queue %d - CWmin: %d, CWmax: %d, Aifs: %d, TXop: %d.\n", |
678 | queue_idx, queue->cw_min, queue->cw_max, queue->aifs, queue->txop); | |
95ea3627 ID |
679 | |
680 | return 0; | |
681 | } | |
682 | EXPORT_SYMBOL_GPL(rt2x00mac_conf_tx); | |
e47a5cdd ID |
683 | |
684 | void rt2x00mac_rfkill_poll(struct ieee80211_hw *hw) | |
685 | { | |
686 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
73077c85 | 687 | bool active = !!rt2x00dev->ops->lib->rfkill_poll(rt2x00dev); |
e47a5cdd | 688 | |
73077c85 | 689 | wiphy_rfkill_set_hw_state(hw->wiphy, !active); |
e47a5cdd ID |
690 | } |
691 | EXPORT_SYMBOL_GPL(rt2x00mac_rfkill_poll); |