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 | ||
7bb45683 | 102 | void 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); |
0b7fde54 | 107 | struct data_queue *queue = NULL; |
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)) |
00898a47 | 116 | goto exit_free_skb; |
066cb637 | 117 | |
95ea3627 | 118 | /* |
61c6e489 | 119 | * Use the ATIM queue if appropriate and present. |
95ea3627 | 120 | */ |
e039fa4a | 121 | if (tx_info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM && |
7dab73b3 | 122 | test_bit(REQUIRE_ATIM_QUEUE, &rt2x00dev->cap_flags)) |
61c6e489 GW |
123 | qid = QID_ATIM; |
124 | ||
125 | queue = rt2x00queue_get_tx_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); |
00898a47 | 130 | goto exit_free_skb; |
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 | */ |
430df798 HS |
142 | if (!rt2x00dev->ops->hw->set_rts_threshold && |
143 | (tx_info->control.rates[0].flags & (IEEE80211_TX_RC_USE_RTS_CTS | | |
144 | IEEE80211_TX_RC_USE_CTS_PROTECT))) { | |
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 | ||
208f19dc | 152 | if (unlikely(rt2x00queue_write_tx_frame(queue, skb, false))) |
b9740c23 DW |
153 | goto exit_fail; |
154 | ||
3780d038 SG |
155 | /* |
156 | * Pausing queue has to be serialized with rt2x00lib_txdone(). Note | |
157 | * we should not use spin_lock_bh variant as bottom halve was already | |
158 | * disabled before ieee80211_xmit() call. | |
159 | */ | |
160 | spin_lock(&queue->tx_lock); | |
b869767b | 161 | if (rt2x00queue_threshold(queue)) |
0b7fde54 | 162 | rt2x00queue_pause_queue(queue); |
3780d038 | 163 | spin_unlock(&queue->tx_lock); |
95ea3627 | 164 | |
7bb45683 | 165 | return; |
b9740c23 DW |
166 | |
167 | exit_fail: | |
3780d038 | 168 | spin_lock(&queue->tx_lock); |
62fe7784 | 169 | rt2x00queue_pause_queue(queue); |
3780d038 | 170 | spin_unlock(&queue->tx_lock); |
00898a47 | 171 | exit_free_skb: |
e4522ab1 | 172 | ieee80211_free_txskb(hw, skb); |
95ea3627 ID |
173 | } |
174 | EXPORT_SYMBOL_GPL(rt2x00mac_tx); | |
175 | ||
176 | int rt2x00mac_start(struct ieee80211_hw *hw) | |
177 | { | |
178 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
95ea3627 | 179 | |
0262ab0d | 180 | if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags)) |
95ea3627 ID |
181 | return 0; |
182 | ||
e37ea213 | 183 | return rt2x00lib_start(rt2x00dev); |
95ea3627 ID |
184 | } |
185 | EXPORT_SYMBOL_GPL(rt2x00mac_start); | |
186 | ||
187 | void rt2x00mac_stop(struct ieee80211_hw *hw) | |
188 | { | |
189 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
190 | ||
0262ab0d | 191 | if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags)) |
066cb637 ID |
192 | return; |
193 | ||
e37ea213 | 194 | rt2x00lib_stop(rt2x00dev); |
95ea3627 ID |
195 | } |
196 | EXPORT_SYMBOL_GPL(rt2x00mac_stop); | |
197 | ||
198 | int rt2x00mac_add_interface(struct ieee80211_hw *hw, | |
1ed32e4f | 199 | struct ieee80211_vif *vif) |
95ea3627 ID |
200 | { |
201 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
1ed32e4f | 202 | struct rt2x00_intf *intf = vif_to_intf(vif); |
a2440830 | 203 | struct data_queue *queue = rt2x00dev->bcn; |
6bb40dd1 ID |
204 | struct queue_entry *entry = NULL; |
205 | unsigned int i; | |
95ea3627 ID |
206 | |
207 | /* | |
6bb40dd1 ID |
208 | * Don't allow interfaces to be added |
209 | * the device has disappeared. | |
95ea3627 | 210 | */ |
0262ab0d ID |
211 | if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags) || |
212 | !test_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags)) | |
6bb40dd1 ID |
213 | return -ENODEV; |
214 | ||
1ed32e4f | 215 | switch (vif->type) { |
05c914fe | 216 | case NL80211_IFTYPE_AP: |
0fc98039 ID |
217 | /* |
218 | * We don't support mixed combinations of | |
219 | * sta and ap interfaces. | |
220 | */ | |
221 | if (rt2x00dev->intf_sta_count) | |
222 | return -ENOBUFS; | |
223 | ||
224 | /* | |
225 | * Check if we exceeded the maximum amount | |
226 | * of supported interfaces. | |
227 | */ | |
228 | if (rt2x00dev->intf_ap_count >= rt2x00dev->ops->max_ap_intf) | |
229 | return -ENOBUFS; | |
230 | ||
231 | break; | |
05c914fe JB |
232 | case NL80211_IFTYPE_STATION: |
233 | case NL80211_IFTYPE_ADHOC: | |
a07dbea2 | 234 | case NL80211_IFTYPE_MESH_POINT: |
ce292a64 | 235 | case NL80211_IFTYPE_WDS: |
0fc98039 ID |
236 | /* |
237 | * We don't support mixed combinations of | |
238 | * sta and ap interfaces. | |
239 | */ | |
240 | if (rt2x00dev->intf_ap_count) | |
241 | return -ENOBUFS; | |
242 | ||
243 | /* | |
244 | * Check if we exceeded the maximum amount | |
245 | * of supported interfaces. | |
246 | */ | |
247 | if (rt2x00dev->intf_sta_count >= rt2x00dev->ops->max_sta_intf) | |
248 | return -ENOBUFS; | |
249 | ||
250 | break; | |
251 | default: | |
252 | return -EINVAL; | |
253 | } | |
6bb40dd1 ID |
254 | |
255 | /* | |
256 | * Loop through all beacon queues to find a free | |
257 | * entry. Since there are as much beacon entries | |
258 | * as the maximum interfaces, this search shouldn't | |
259 | * fail. | |
260 | */ | |
261 | for (i = 0; i < queue->limit; i++) { | |
262 | entry = &queue->entries[i]; | |
0262ab0d | 263 | if (!test_and_set_bit(ENTRY_BCN_ASSIGNED, &entry->flags)) |
6bb40dd1 ID |
264 | break; |
265 | } | |
266 | ||
267 | if (unlikely(i == queue->limit)) | |
95ea3627 ID |
268 | return -ENOBUFS; |
269 | ||
6bb40dd1 ID |
270 | /* |
271 | * We are now absolutely sure the interface can be created, | |
272 | * increase interface count and start initialization. | |
273 | */ | |
274 | ||
1ed32e4f | 275 | if (vif->type == NL80211_IFTYPE_AP) |
6bb40dd1 ID |
276 | rt2x00dev->intf_ap_count++; |
277 | else | |
278 | rt2x00dev->intf_sta_count++; | |
279 | ||
17512dc3 | 280 | mutex_init(&intf->beacon_skb_mutex); |
6bb40dd1 ID |
281 | intf->beacon = entry; |
282 | ||
95ea3627 | 283 | /* |
b595076a | 284 | * The MAC address must be configured after the device |
4150c572 JB |
285 | * has been initialized. Otherwise the device can reset |
286 | * the MAC registers. | |
06b3cda0 ID |
287 | * The BSSID address must only be configured in AP mode, |
288 | * however we should not send an empty BSSID address for | |
289 | * STA interfaces at this time, since this can cause | |
290 | * invalid behavior in the device. | |
95ea3627 | 291 | */ |
fa8b4b22 | 292 | rt2x00lib_config_intf(rt2x00dev, intf, vif->type, |
a39fd6be | 293 | vif->addr, NULL); |
95ea3627 | 294 | |
e0b005fa ID |
295 | /* |
296 | * Some filters depend on the current working mode. We can force | |
297 | * an update during the next configure_filter() run by mac80211 by | |
298 | * resetting the current packet_filter state. | |
299 | */ | |
300 | rt2x00dev->packet_filter = 0; | |
301 | ||
95ea3627 ID |
302 | return 0; |
303 | } | |
304 | EXPORT_SYMBOL_GPL(rt2x00mac_add_interface); | |
305 | ||
306 | void rt2x00mac_remove_interface(struct ieee80211_hw *hw, | |
1ed32e4f | 307 | struct ieee80211_vif *vif) |
95ea3627 ID |
308 | { |
309 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
1ed32e4f | 310 | struct rt2x00_intf *intf = vif_to_intf(vif); |
95ea3627 ID |
311 | |
312 | /* | |
066cb637 ID |
313 | * Don't allow interfaces to be remove while |
314 | * either the device has disappeared or when | |
315 | * no interface is present. | |
95ea3627 | 316 | */ |
0262ab0d | 317 | if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags) || |
1ed32e4f JB |
318 | (vif->type == NL80211_IFTYPE_AP && !rt2x00dev->intf_ap_count) || |
319 | (vif->type != NL80211_IFTYPE_AP && !rt2x00dev->intf_sta_count)) | |
95ea3627 ID |
320 | return; |
321 | ||
1ed32e4f | 322 | if (vif->type == NL80211_IFTYPE_AP) |
6bb40dd1 ID |
323 | rt2x00dev->intf_ap_count--; |
324 | else | |
325 | rt2x00dev->intf_sta_count--; | |
326 | ||
327 | /* | |
328 | * Release beacon entry so it is available for | |
329 | * new interfaces again. | |
330 | */ | |
0262ab0d | 331 | clear_bit(ENTRY_BCN_ASSIGNED, &intf->beacon->flags); |
95ea3627 ID |
332 | |
333 | /* | |
334 | * Make sure the bssid and mac address registers | |
335 | * are cleared to prevent false ACKing of frames. | |
336 | */ | |
6bb40dd1 | 337 | rt2x00lib_config_intf(rt2x00dev, intf, |
05c914fe | 338 | NL80211_IFTYPE_UNSPECIFIED, NULL, NULL); |
95ea3627 ID |
339 | } |
340 | EXPORT_SYMBOL_GPL(rt2x00mac_remove_interface); | |
341 | ||
e8975581 | 342 | int rt2x00mac_config(struct ieee80211_hw *hw, u32 changed) |
95ea3627 ID |
343 | { |
344 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
e8975581 | 345 | struct ieee80211_conf *conf = &hw->conf; |
95ea3627 ID |
346 | |
347 | /* | |
49513481 | 348 | * mac80211 might be calling this function while we are trying |
066cb637 | 349 | * to remove the device or perhaps suspending it. |
95ea3627 | 350 | */ |
0262ab0d | 351 | if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags)) |
95ea3627 ID |
352 | return 0; |
353 | ||
354 | /* | |
bdfa500b ID |
355 | * Some configuration parameters (e.g. channel and antenna values) can |
356 | * only be set when the radio is enabled, but do require the RX to | |
d8147f9d ID |
357 | * be off. During this period we should keep link tuning enabled, |
358 | * if for any reason the link tuner must be reset, this will be | |
359 | * handled by rt2x00lib_config(). | |
95ea3627 | 360 | */ |
0b7fde54 | 361 | rt2x00queue_stop_queue(rt2x00dev->rx); |
95ea3627 | 362 | |
bdfa500b ID |
363 | /* |
364 | * When we've just turned on the radio, we want to reprogram | |
365 | * everything to ensure a consistent state | |
366 | */ | |
367 | rt2x00lib_config(rt2x00dev, conf, changed); | |
74c0ee9b | 368 | |
bdfa500b ID |
369 | /* |
370 | * After the radio has been enabled we need to configure | |
371 | * the antenna to the default settings. rt2x00lib_config_antenna() | |
372 | * should determine if any action should be taken based on | |
373 | * checking if diversity has been enabled or no antenna changes | |
374 | * have been made since the last configuration change. | |
375 | */ | |
376 | rt2x00lib_config_antenna(rt2x00dev, rt2x00dev->default_ant); | |
95ea3627 | 377 | |
bdfa500b | 378 | /* Turn RX back on */ |
0b7fde54 | 379 | rt2x00queue_start_queue(rt2x00dev->rx); |
95ea3627 ID |
380 | |
381 | return 0; | |
382 | } | |
383 | EXPORT_SYMBOL_GPL(rt2x00mac_config); | |
384 | ||
3a643d24 ID |
385 | void rt2x00mac_configure_filter(struct ieee80211_hw *hw, |
386 | unsigned int changed_flags, | |
387 | unsigned int *total_flags, | |
3ac64bee | 388 | u64 multicast) |
3a643d24 ID |
389 | { |
390 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
391 | ||
392 | /* | |
393 | * Mask off any flags we are going to ignore | |
394 | * from the total_flags field. | |
395 | */ | |
396 | *total_flags &= | |
397 | FIF_ALLMULTI | | |
398 | FIF_FCSFAIL | | |
399 | FIF_PLCPFAIL | | |
400 | FIF_CONTROL | | |
1afcfd54 | 401 | FIF_PSPOLL | |
3a643d24 ID |
402 | FIF_OTHER_BSS | |
403 | FIF_PROMISC_IN_BSS; | |
404 | ||
405 | /* | |
406 | * Apply some rules to the filters: | |
407 | * - Some filters imply different filters to be set. | |
408 | * - Some things we can't filter out at all. | |
409 | * - Multicast filter seems to kill broadcast traffic so never use it. | |
410 | */ | |
411 | *total_flags |= FIF_ALLMULTI; | |
412 | if (*total_flags & FIF_OTHER_BSS || | |
413 | *total_flags & FIF_PROMISC_IN_BSS) | |
414 | *total_flags |= FIF_PROMISC_IN_BSS | FIF_OTHER_BSS; | |
415 | ||
1afcfd54 IP |
416 | /* |
417 | * If the device has a single filter for all control frames, | |
418 | * FIF_CONTROL and FIF_PSPOLL flags imply each other. | |
419 | * And if the device has more than one filter for control frames | |
420 | * of different types, but has no a separate filter for PS Poll frames, | |
421 | * FIF_CONTROL flag implies FIF_PSPOLL. | |
422 | */ | |
7dab73b3 | 423 | if (!test_bit(CAPABILITY_CONTROL_FILTERS, &rt2x00dev->cap_flags)) { |
1afcfd54 IP |
424 | if (*total_flags & FIF_CONTROL || *total_flags & FIF_PSPOLL) |
425 | *total_flags |= FIF_CONTROL | FIF_PSPOLL; | |
426 | } | |
7dab73b3 | 427 | if (!test_bit(CAPABILITY_CONTROL_FILTER_PSPOLL, &rt2x00dev->cap_flags)) { |
1afcfd54 IP |
428 | if (*total_flags & FIF_CONTROL) |
429 | *total_flags |= FIF_PSPOLL; | |
430 | } | |
431 | ||
3a643d24 ID |
432 | /* |
433 | * Check if there is any work left for us. | |
434 | */ | |
435 | if (rt2x00dev->packet_filter == *total_flags) | |
436 | return; | |
437 | rt2x00dev->packet_filter = *total_flags; | |
438 | ||
afa62042 | 439 | rt2x00dev->ops->lib->config_filter(rt2x00dev, *total_flags); |
3a643d24 ID |
440 | } |
441 | EXPORT_SYMBOL_GPL(rt2x00mac_configure_filter); | |
442 | ||
4dee32f5 HS |
443 | static void rt2x00mac_set_tim_iter(void *data, u8 *mac, |
444 | struct ieee80211_vif *vif) | |
445 | { | |
446 | struct rt2x00_intf *intf = vif_to_intf(vif); | |
447 | ||
448 | if (vif->type != NL80211_IFTYPE_AP && | |
449 | vif->type != NL80211_IFTYPE_ADHOC && | |
450 | vif->type != NL80211_IFTYPE_MESH_POINT && | |
451 | vif->type != NL80211_IFTYPE_WDS) | |
452 | return; | |
453 | ||
bfe6a15d | 454 | set_bit(DELAYED_UPDATE_BEACON, &intf->delayed_flags); |
4dee32f5 HS |
455 | } |
456 | ||
ad2f34b4 ID |
457 | int rt2x00mac_set_tim(struct ieee80211_hw *hw, struct ieee80211_sta *sta, |
458 | bool set) | |
459 | { | |
460 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
461 | ||
4dee32f5 HS |
462 | if (!test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) |
463 | return 0; | |
464 | ||
465 | ieee80211_iterate_active_interfaces_atomic(rt2x00dev->hw, | |
466 | rt2x00mac_set_tim_iter, | |
467 | rt2x00dev); | |
468 | ||
469 | /* queue work to upodate the beacon template */ | |
470 | ieee80211_queue_work(rt2x00dev->hw, &rt2x00dev->intf_work); | |
ad2f34b4 ID |
471 | return 0; |
472 | } | |
473 | EXPORT_SYMBOL_GPL(rt2x00mac_set_tim); | |
474 | ||
2bb057d0 | 475 | #ifdef CONFIG_RT2X00_LIB_CRYPTO |
7b40982e ID |
476 | static void memcpy_tkip(struct rt2x00lib_crypto *crypto, u8 *key, u8 key_len) |
477 | { | |
478 | if (key_len > NL80211_TKIP_DATA_OFFSET_ENCR_KEY) | |
736e3aca | 479 | memcpy(crypto->key, |
7b40982e ID |
480 | &key[NL80211_TKIP_DATA_OFFSET_ENCR_KEY], |
481 | sizeof(crypto->key)); | |
482 | ||
483 | if (key_len > NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY) | |
736e3aca | 484 | memcpy(crypto->tx_mic, |
7b40982e ID |
485 | &key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY], |
486 | sizeof(crypto->tx_mic)); | |
487 | ||
488 | if (key_len > NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY) | |
736e3aca | 489 | memcpy(crypto->rx_mic, |
7b40982e ID |
490 | &key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY], |
491 | sizeof(crypto->rx_mic)); | |
492 | } | |
493 | ||
2bb057d0 | 494 | int rt2x00mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, |
dc822b5d | 495 | struct ieee80211_vif *vif, struct ieee80211_sta *sta, |
2bb057d0 ID |
496 | struct ieee80211_key_conf *key) |
497 | { | |
498 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
499 | int (*set_key) (struct rt2x00_dev *rt2x00dev, | |
500 | struct rt2x00lib_crypto *crypto, | |
501 | struct ieee80211_key_conf *key); | |
502 | struct rt2x00lib_crypto crypto; | |
dc822b5d JB |
503 | static const u8 bcast_addr[ETH_ALEN] = |
504 | { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, }; | |
f03fcfc1 | 505 | struct rt2x00_sta *sta_priv = NULL; |
2bb057d0 | 506 | |
8058409c ID |
507 | if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags)) |
508 | return 0; | |
7dab73b3 | 509 | else if (!test_bit(CAPABILITY_HW_CRYPTO, &rt2x00dev->cap_flags)) |
2bb057d0 ID |
510 | return -EOPNOTSUPP; |
511 | else if (key->keylen > 32) | |
512 | return -ENOSPC; | |
513 | ||
514 | memset(&crypto, 0, sizeof(crypto)); | |
515 | ||
18325523 | 516 | crypto.bssidx = rt2x00lib_get_bssidx(rt2x00dev, vif); |
2bb057d0 ID |
517 | crypto.cipher = rt2x00crypto_key_to_cipher(key); |
518 | if (crypto.cipher == CIPHER_NONE) | |
519 | return -EOPNOTSUPP; | |
520 | ||
521 | crypto.cmd = cmd; | |
dc822b5d | 522 | |
f03fcfc1 | 523 | if (sta) { |
dc822b5d | 524 | crypto.address = sta->addr; |
f03fcfc1 HS |
525 | sta_priv = sta_to_rt2x00_sta(sta); |
526 | crypto.wcid = sta_priv->wcid; | |
527 | } else | |
dc822b5d | 528 | crypto.address = bcast_addr; |
2bb057d0 | 529 | |
7b40982e ID |
530 | if (crypto.cipher == CIPHER_TKIP) |
531 | memcpy_tkip(&crypto, &key->key[0], key->keylen); | |
532 | else | |
736e3aca | 533 | memcpy(crypto.key, &key->key[0], key->keylen); |
2bb057d0 ID |
534 | /* |
535 | * Each BSS has a maximum of 4 shared keys. | |
536 | * Shared key index values: | |
537 | * 0) BSS0 key0 | |
538 | * 1) BSS0 key1 | |
539 | * ... | |
540 | * 4) BSS1 key0 | |
541 | * ... | |
542 | * 8) BSS2 key0 | |
543 | * ... | |
544 | * Both pairwise as shared key indeces are determined by | |
545 | * driver. This is required because the hardware requires | |
546 | * keys to be assigned in correct order (When key 1 is | |
547 | * provided but key 0 is not, then the key is not found | |
548 | * by the hardware during RX). | |
549 | */ | |
acaf908d ID |
550 | if (cmd == SET_KEY) |
551 | key->hw_key_idx = 0; | |
2bb057d0 ID |
552 | |
553 | if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) | |
554 | set_key = rt2x00dev->ops->lib->config_pairwise_key; | |
555 | else | |
556 | set_key = rt2x00dev->ops->lib->config_shared_key; | |
557 | ||
558 | if (!set_key) | |
559 | return -EOPNOTSUPP; | |
560 | ||
561 | return set_key(rt2x00dev, &crypto, key); | |
562 | } | |
563 | EXPORT_SYMBOL_GPL(rt2x00mac_set_key); | |
564 | #endif /* CONFIG_RT2X00_LIB_CRYPTO */ | |
565 | ||
b4943d81 HS |
566 | int rt2x00mac_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif, |
567 | struct ieee80211_sta *sta) | |
568 | { | |
569 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
570 | struct rt2x00_sta *sta_priv = sta_to_rt2x00_sta(sta); | |
571 | ||
572 | /* | |
573 | * If there's no space left in the device table store | |
574 | * -1 as wcid but tell mac80211 everything went ok. | |
575 | */ | |
576 | if (rt2x00dev->ops->lib->sta_add(rt2x00dev, vif, sta)) | |
577 | sta_priv->wcid = -1; | |
578 | ||
579 | return 0; | |
580 | } | |
581 | EXPORT_SYMBOL_GPL(rt2x00mac_sta_add); | |
582 | ||
583 | int rt2x00mac_sta_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif, | |
584 | struct ieee80211_sta *sta) | |
585 | { | |
586 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
587 | struct rt2x00_sta *sta_priv = sta_to_rt2x00_sta(sta); | |
588 | ||
589 | /* | |
590 | * If we never sent the STA to the device no need to clean it up. | |
591 | */ | |
592 | if (sta_priv->wcid < 0) | |
593 | return 0; | |
594 | ||
595 | return rt2x00dev->ops->lib->sta_remove(rt2x00dev, sta_priv->wcid); | |
596 | } | |
597 | EXPORT_SYMBOL_GPL(rt2x00mac_sta_remove); | |
598 | ||
d8147f9d ID |
599 | void rt2x00mac_sw_scan_start(struct ieee80211_hw *hw) |
600 | { | |
601 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
7dab73b3 | 602 | set_bit(DEVICE_STATE_SCANNING, &rt2x00dev->flags); |
d8147f9d ID |
603 | rt2x00link_stop_tuner(rt2x00dev); |
604 | } | |
605 | EXPORT_SYMBOL_GPL(rt2x00mac_sw_scan_start); | |
606 | ||
607 | void rt2x00mac_sw_scan_complete(struct ieee80211_hw *hw) | |
608 | { | |
609 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
7dab73b3 | 610 | clear_bit(DEVICE_STATE_SCANNING, &rt2x00dev->flags); |
d8147f9d ID |
611 | rt2x00link_start_tuner(rt2x00dev); |
612 | } | |
613 | EXPORT_SYMBOL_GPL(rt2x00mac_sw_scan_complete); | |
614 | ||
95ea3627 ID |
615 | int rt2x00mac_get_stats(struct ieee80211_hw *hw, |
616 | struct ieee80211_low_level_stats *stats) | |
617 | { | |
618 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
619 | ||
620 | /* | |
621 | * The dot11ACKFailureCount, dot11RTSFailureCount and | |
622 | * dot11RTSSuccessCount are updated in interrupt time. | |
623 | * dot11FCSErrorCount is updated in the link tuner. | |
624 | */ | |
625 | memcpy(stats, &rt2x00dev->low_level_stats, sizeof(*stats)); | |
626 | ||
627 | return 0; | |
628 | } | |
629 | EXPORT_SYMBOL_GPL(rt2x00mac_get_stats); | |
630 | ||
471b3efd JB |
631 | void rt2x00mac_bss_info_changed(struct ieee80211_hw *hw, |
632 | struct ieee80211_vif *vif, | |
633 | struct ieee80211_bss_conf *bss_conf, | |
634 | u32 changes) | |
5c58ee51 ID |
635 | { |
636 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
6bb40dd1 | 637 | struct rt2x00_intf *intf = vif_to_intf(vif); |
2d0ddec5 JB |
638 | |
639 | /* | |
49513481 | 640 | * mac80211 might be calling this function while we are trying |
2d0ddec5 JB |
641 | * to remove the device or perhaps suspending it. |
642 | */ | |
643 | if (!test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags)) | |
644 | return; | |
645 | ||
2d0ddec5 | 646 | /* |
5af3c1d1 | 647 | * Update the BSSID. |
2d0ddec5 JB |
648 | */ |
649 | if (changes & BSS_CHANGED_BSSID) | |
650 | rt2x00lib_config_intf(rt2x00dev, intf, vif->type, NULL, | |
1ed7a17a | 651 | bss_conf->bssid); |
2d0ddec5 JB |
652 | |
653 | /* | |
1dae8d34 HS |
654 | * Update the beacon. This is only required on USB devices. PCI |
655 | * devices fetch beacons periodically. | |
2d0ddec5 | 656 | */ |
1dae8d34 | 657 | if (changes & BSS_CHANGED_BEACON && rt2x00_is_usb(rt2x00dev)) |
69cf36a4 HS |
658 | rt2x00queue_update_beacon(rt2x00dev, vif); |
659 | ||
660 | /* | |
661 | * Start/stop beaconing. | |
662 | */ | |
663 | if (changes & BSS_CHANGED_BEACON_ENABLED) { | |
664 | if (!bss_conf->enable_beacon && intf->enable_beacon) { | |
665 | rt2x00queue_clear_beacon(rt2x00dev, vif); | |
666 | rt2x00dev->intf_beaconing--; | |
667 | intf->enable_beacon = false; | |
668 | ||
669 | if (rt2x00dev->intf_beaconing == 0) { | |
670 | /* | |
671 | * Last beaconing interface disabled | |
672 | * -> stop beacon queue. | |
673 | */ | |
674 | mutex_lock(&intf->beacon_skb_mutex); | |
675 | rt2x00queue_stop_queue(rt2x00dev->bcn); | |
676 | mutex_unlock(&intf->beacon_skb_mutex); | |
677 | } | |
678 | ||
679 | ||
680 | } else if (bss_conf->enable_beacon && !intf->enable_beacon) { | |
681 | rt2x00dev->intf_beaconing++; | |
682 | intf->enable_beacon = true; | |
683 | ||
684 | if (rt2x00dev->intf_beaconing == 1) { | |
685 | /* | |
686 | * First beaconing interface enabled | |
687 | * -> start beacon queue. | |
688 | */ | |
689 | mutex_lock(&intf->beacon_skb_mutex); | |
690 | rt2x00queue_start_queue(rt2x00dev->bcn); | |
691 | mutex_unlock(&intf->beacon_skb_mutex); | |
692 | } | |
693 | } | |
694 | } | |
5c58ee51 ID |
695 | |
696 | /* | |
6bb40dd1 ID |
697 | * When the association status has changed we must reset the link |
698 | * tuner counter. This is because some drivers determine if they | |
699 | * should perform link tuning based on the number of seconds | |
700 | * while associated or not associated. | |
5c58ee51 | 701 | */ |
6bb40dd1 ID |
702 | if (changes & BSS_CHANGED_ASSOC) { |
703 | rt2x00dev->link.count = 0; | |
5c58ee51 | 704 | |
6bb40dd1 ID |
705 | if (bss_conf->assoc) |
706 | rt2x00dev->intf_associated++; | |
707 | else | |
708 | rt2x00dev->intf_associated--; | |
a2e1d52a | 709 | |
d904dc17 | 710 | rt2x00leds_led_assoc(rt2x00dev, !!rt2x00dev->intf_associated); |
e66a8ddf SG |
711 | |
712 | clear_bit(CONFIG_QOS_DISABLED, &rt2x00dev->flags); | |
6bb40dd1 | 713 | } |
5c58ee51 | 714 | |
e66a8ddf SG |
715 | /* |
716 | * Check for access point which do not support 802.11e . We have to | |
717 | * generate data frames sequence number in S/W for such AP, because | |
718 | * of H/W bug. | |
719 | */ | |
720 | if (changes & BSS_CHANGED_QOS && !bss_conf->qos) | |
721 | set_bit(CONFIG_QOS_DISABLED, &rt2x00dev->flags); | |
722 | ||
6bb40dd1 | 723 | /* |
72810379 ID |
724 | * When the erp information has changed, we should perform |
725 | * additional configuration steps. For all other changes we are done. | |
6bb40dd1 | 726 | */ |
02044643 HS |
727 | if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_ERP_PREAMBLE | |
728 | BSS_CHANGED_ERP_SLOT | BSS_CHANGED_BASIC_RATES | | |
87c1915d | 729 | BSS_CHANGED_BEACON_INT | BSS_CHANGED_HT)) |
02044643 | 730 | rt2x00lib_config_erp(rt2x00dev, intf, bss_conf, changes); |
5c58ee51 | 731 | } |
471b3efd | 732 | EXPORT_SYMBOL_GPL(rt2x00mac_bss_info_changed); |
5c58ee51 | 733 | |
8a3a3c85 EP |
734 | int rt2x00mac_conf_tx(struct ieee80211_hw *hw, |
735 | struct ieee80211_vif *vif, u16 queue_idx, | |
95ea3627 ID |
736 | const struct ieee80211_tx_queue_params *params) |
737 | { | |
738 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
181d6902 | 739 | struct data_queue *queue; |
95ea3627 | 740 | |
11f818e0 | 741 | queue = rt2x00queue_get_tx_queue(rt2x00dev, queue_idx); |
181d6902 | 742 | if (unlikely(!queue)) |
95ea3627 ID |
743 | return -EINVAL; |
744 | ||
745 | /* | |
746 | * The passed variables are stored as real value ((2^n)-1). | |
747 | * Ralink registers require to know the bit number 'n'. | |
748 | */ | |
3b3618ad | 749 | if (params->cw_min > 0) |
181d6902 | 750 | queue->cw_min = fls(params->cw_min); |
95ea3627 | 751 | else |
181d6902 | 752 | queue->cw_min = 5; /* cw_min: 2^5 = 32. */ |
95ea3627 | 753 | |
3b3618ad | 754 | if (params->cw_max > 0) |
181d6902 | 755 | queue->cw_max = fls(params->cw_max); |
95ea3627 | 756 | else |
181d6902 | 757 | queue->cw_max = 10; /* cw_min: 2^10 = 1024. */ |
95ea3627 | 758 | |
0b57664c | 759 | queue->aifs = params->aifs; |
2af0a570 | 760 | queue->txop = params->txop; |
95ea3627 ID |
761 | |
762 | INFO(rt2x00dev, | |
2af0a570 ID |
763 | "Configured TX queue %d - CWmin: %d, CWmax: %d, Aifs: %d, TXop: %d.\n", |
764 | queue_idx, queue->cw_min, queue->cw_max, queue->aifs, queue->txop); | |
95ea3627 ID |
765 | |
766 | return 0; | |
767 | } | |
768 | EXPORT_SYMBOL_GPL(rt2x00mac_conf_tx); | |
e47a5cdd ID |
769 | |
770 | void rt2x00mac_rfkill_poll(struct ieee80211_hw *hw) | |
771 | { | |
772 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
73077c85 | 773 | bool active = !!rt2x00dev->ops->lib->rfkill_poll(rt2x00dev); |
e47a5cdd | 774 | |
73077c85 | 775 | wiphy_rfkill_set_hw_state(hw->wiphy, !active); |
e47a5cdd ID |
776 | } |
777 | EXPORT_SYMBOL_GPL(rt2x00mac_rfkill_poll); | |
f44df18c ID |
778 | |
779 | void rt2x00mac_flush(struct ieee80211_hw *hw, bool drop) | |
780 | { | |
781 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
782 | struct data_queue *queue; | |
f44df18c | 783 | |
5be65609 ID |
784 | tx_queue_for_each(rt2x00dev, queue) |
785 | rt2x00queue_flush_queue(queue, drop); | |
f44df18c ID |
786 | } |
787 | EXPORT_SYMBOL_GPL(rt2x00mac_flush); | |
e7dee444 | 788 | |
0ed7b3c0 ID |
789 | int rt2x00mac_set_antenna(struct ieee80211_hw *hw, u32 tx_ant, u32 rx_ant) |
790 | { | |
791 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
792 | struct link_ant *ant = &rt2x00dev->link.ant; | |
793 | struct antenna_setup *def = &rt2x00dev->default_ant; | |
794 | struct antenna_setup setup; | |
795 | ||
796 | // The antenna value is not supposed to be 0, | |
797 | // or exceed the maximum number of antenna's. | |
798 | if (!tx_ant || (tx_ant & ~3) || !rx_ant || (rx_ant & ~3)) | |
799 | return -EINVAL; | |
800 | ||
801 | // When the client tried to configure the antenna to or from | |
802 | // diversity mode, we must reset the default antenna as well | |
803 | // as that controls the diversity switch. | |
804 | if (ant->flags & ANTENNA_TX_DIVERSITY && tx_ant != 3) | |
805 | ant->flags &= ~ANTENNA_TX_DIVERSITY; | |
806 | if (ant->flags & ANTENNA_RX_DIVERSITY && rx_ant != 3) | |
807 | ant->flags &= ~ANTENNA_RX_DIVERSITY; | |
808 | ||
809 | // If diversity is being enabled, check if we need hardware | |
810 | // or software diversity. In the latter case, reset the value, | |
811 | // and make sure we update the antenna flags to have the | |
812 | // link tuner pick up the diversity tuning. | |
813 | if (tx_ant == 3 && def->tx == ANTENNA_SW_DIVERSITY) { | |
814 | tx_ant = ANTENNA_SW_DIVERSITY; | |
815 | ant->flags |= ANTENNA_TX_DIVERSITY; | |
816 | } | |
817 | ||
818 | if (rx_ant == 3 && def->rx == ANTENNA_SW_DIVERSITY) { | |
819 | rx_ant = ANTENNA_SW_DIVERSITY; | |
820 | ant->flags |= ANTENNA_RX_DIVERSITY; | |
821 | } | |
822 | ||
823 | setup.tx = tx_ant; | |
824 | setup.rx = rx_ant; | |
825 | ||
826 | rt2x00lib_config_antenna(rt2x00dev, setup); | |
827 | ||
828 | return 0; | |
829 | } | |
830 | EXPORT_SYMBOL_GPL(rt2x00mac_set_antenna); | |
831 | ||
832 | int rt2x00mac_get_antenna(struct ieee80211_hw *hw, u32 *tx_ant, u32 *rx_ant) | |
833 | { | |
834 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
835 | struct link_ant *ant = &rt2x00dev->link.ant; | |
836 | struct antenna_setup *active = &rt2x00dev->link.ant.active; | |
837 | ||
838 | // When software diversity is active, we must report this to the | |
839 | // client and not the current active antenna state. | |
840 | if (ant->flags & ANTENNA_TX_DIVERSITY) | |
841 | *tx_ant = ANTENNA_HW_DIVERSITY; | |
842 | else | |
843 | *tx_ant = active->tx; | |
844 | ||
845 | if (ant->flags & ANTENNA_RX_DIVERSITY) | |
846 | *rx_ant = ANTENNA_HW_DIVERSITY; | |
847 | else | |
848 | *rx_ant = active->rx; | |
849 | ||
850 | return 0; | |
851 | } | |
852 | EXPORT_SYMBOL_GPL(rt2x00mac_get_antenna); | |
853 | ||
e7dee444 ID |
854 | void rt2x00mac_get_ringparam(struct ieee80211_hw *hw, |
855 | u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max) | |
856 | { | |
857 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
858 | struct data_queue *queue; | |
859 | ||
860 | tx_queue_for_each(rt2x00dev, queue) { | |
861 | *tx += queue->length; | |
862 | *tx_max += queue->limit; | |
863 | } | |
864 | ||
865 | *rx = rt2x00dev->rx->length; | |
866 | *rx_max = rt2x00dev->rx->limit; | |
867 | } | |
868 | EXPORT_SYMBOL_GPL(rt2x00mac_get_ringparam); | |
5f0dd296 GW |
869 | |
870 | bool rt2x00mac_tx_frames_pending(struct ieee80211_hw *hw) | |
871 | { | |
872 | struct rt2x00_dev *rt2x00dev = hw->priv; | |
873 | struct data_queue *queue; | |
874 | ||
875 | tx_queue_for_each(rt2x00dev, queue) { | |
876 | if (!rt2x00queue_empty(queue)) | |
877 | return true; | |
878 | } | |
879 | ||
880 | return false; | |
881 | } | |
882 | EXPORT_SYMBOL_GPL(rt2x00mac_tx_frames_pending); |