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6974e363 EG |
1 | /****************************************************************************** |
2 | * | |
3 | * Copyright(c) 2003 - 2008 Intel Corporation. All rights reserved. | |
4 | * | |
5 | * Portions of this file are derived from the ipw3945 project, as well | |
6 | * as portions of the ieee80211 subsystem header files. | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify it | |
9 | * under the terms of version 2 of the GNU General Public License as | |
10 | * published by the Free Software Foundation. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
13 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
15 | * more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License along with | |
18 | * this program; if not, write to the Free Software Foundation, Inc., | |
19 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA | |
20 | * | |
21 | * The full GNU General Public License is included in this distribution in the | |
22 | * file called LICENSE. | |
23 | * | |
24 | * Contact Information: | |
759ef89f | 25 | * Intel Linux Wireless <ilw@linux.intel.com> |
6974e363 EG |
26 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
27 | * | |
28 | *****************************************************************************/ | |
29 | ||
30 | #include <net/mac80211.h> | |
947b13a7 | 31 | #include <linux/etherdevice.h> |
6974e363 | 32 | |
3e0d4cb1 | 33 | #include "iwl-dev.h" |
6974e363 EG |
34 | #include "iwl-core.h" |
35 | #include "iwl-sta.h" | |
6974e363 | 36 | #include "iwl-helpers.h" |
80fb47a1 | 37 | |
7a999bf0 | 38 | |
24e5c401 EG |
39 | #define IWL_STA_DRIVER_ACTIVE BIT(0) /* driver entry is active */ |
40 | #define IWL_STA_UCODE_ACTIVE BIT(1) /* ucode entry is active */ | |
7a999bf0 | 41 | |
947b13a7 TW |
42 | u8 iwl_find_station(struct iwl_priv *priv, const u8 *addr) |
43 | { | |
44 | int i; | |
45 | int start = 0; | |
46 | int ret = IWL_INVALID_STATION; | |
47 | unsigned long flags; | |
947b13a7 | 48 | |
05c914fe JB |
49 | if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) || |
50 | (priv->iw_mode == NL80211_IFTYPE_AP)) | |
947b13a7 TW |
51 | start = IWL_STA_ID; |
52 | ||
53 | if (is_broadcast_ether_addr(addr)) | |
54 | return priv->hw_params.bcast_sta_id; | |
55 | ||
56 | spin_lock_irqsave(&priv->sta_lock, flags); | |
57 | for (i = start; i < priv->hw_params.max_stations; i++) | |
58 | if (priv->stations[i].used && | |
59 | (!compare_ether_addr(priv->stations[i].sta.sta.addr, | |
60 | addr))) { | |
61 | ret = i; | |
62 | goto out; | |
63 | } | |
64 | ||
e174961c JB |
65 | IWL_DEBUG_ASSOC_LIMIT("can not find STA %pM total %d\n", |
66 | addr, priv->num_stations); | |
947b13a7 TW |
67 | |
68 | out: | |
69 | spin_unlock_irqrestore(&priv->sta_lock, flags); | |
70 | return ret; | |
71 | } | |
72 | EXPORT_SYMBOL(iwl_find_station); | |
73 | ||
be1f3ab6 EG |
74 | int iwl_get_ra_sta_id(struct iwl_priv *priv, struct ieee80211_hdr *hdr) |
75 | { | |
05c914fe | 76 | if (priv->iw_mode == NL80211_IFTYPE_STATION) { |
be1f3ab6 EG |
77 | return IWL_AP_ID; |
78 | } else { | |
79 | u8 *da = ieee80211_get_DA(hdr); | |
80 | return iwl_find_station(priv, da); | |
81 | } | |
82 | } | |
83 | EXPORT_SYMBOL(iwl_get_ra_sta_id); | |
84 | ||
24e5c401 EG |
85 | static void iwl_sta_ucode_activate(struct iwl_priv *priv, u8 sta_id) |
86 | { | |
87 | unsigned long flags; | |
24e5c401 EG |
88 | |
89 | spin_lock_irqsave(&priv->sta_lock, flags); | |
90 | ||
91 | if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE)) | |
92 | IWL_ERROR("ACTIVATE a non DRIVER active station %d\n", sta_id); | |
93 | ||
94 | priv->stations[sta_id].used |= IWL_STA_UCODE_ACTIVE; | |
e174961c JB |
95 | IWL_DEBUG_ASSOC("Added STA to Ucode: %pM\n", |
96 | priv->stations[sta_id].sta.sta.addr); | |
24e5c401 EG |
97 | |
98 | spin_unlock_irqrestore(&priv->sta_lock, flags); | |
99 | } | |
100 | ||
42132bce TW |
101 | static int iwl_add_sta_callback(struct iwl_priv *priv, |
102 | struct iwl_cmd *cmd, struct sk_buff *skb) | |
103 | { | |
104 | struct iwl_rx_packet *res = NULL; | |
3257e5d4 TW |
105 | struct iwl_addsta_cmd *addsta = |
106 | (struct iwl_addsta_cmd *)cmd->cmd.payload; | |
107 | u8 sta_id = addsta->sta.sta_id; | |
42132bce TW |
108 | |
109 | if (!skb) { | |
110 | IWL_ERROR("Error: Response NULL in REPLY_ADD_STA.\n"); | |
111 | return 1; | |
112 | } | |
113 | ||
114 | res = (struct iwl_rx_packet *)skb->data; | |
115 | if (res->hdr.flags & IWL_CMD_FAILED_MSK) { | |
116 | IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n", | |
117 | res->hdr.flags); | |
118 | return 1; | |
119 | } | |
120 | ||
121 | switch (res->u.add_sta.status) { | |
122 | case ADD_STA_SUCCESS_MSK: | |
24e5c401 EG |
123 | iwl_sta_ucode_activate(priv, sta_id); |
124 | /* fall through */ | |
42132bce TW |
125 | default: |
126 | IWL_DEBUG_HC("Received REPLY_ADD_STA:(0x%08X)\n", | |
127 | res->u.add_sta.status); | |
128 | break; | |
129 | } | |
130 | ||
131 | /* We didn't cache the SKB; let the caller free it */ | |
132 | return 1; | |
133 | } | |
134 | ||
9f58671e | 135 | static int iwl_send_add_sta(struct iwl_priv *priv, |
133636de TW |
136 | struct iwl_addsta_cmd *sta, u8 flags) |
137 | { | |
138 | struct iwl_rx_packet *res = NULL; | |
139 | int ret = 0; | |
140 | u8 data[sizeof(*sta)]; | |
141 | struct iwl_host_cmd cmd = { | |
142 | .id = REPLY_ADD_STA, | |
143 | .meta.flags = flags, | |
144 | .data = data, | |
145 | }; | |
146 | ||
42132bce TW |
147 | if (flags & CMD_ASYNC) |
148 | cmd.meta.u.callback = iwl_add_sta_callback; | |
149 | else | |
133636de TW |
150 | cmd.meta.flags |= CMD_WANT_SKB; |
151 | ||
152 | cmd.len = priv->cfg->ops->utils->build_addsta_hcmd(sta, data); | |
153 | ret = iwl_send_cmd(priv, &cmd); | |
154 | ||
155 | if (ret || (flags & CMD_ASYNC)) | |
156 | return ret; | |
157 | ||
158 | res = (struct iwl_rx_packet *)cmd.meta.u.skb->data; | |
159 | if (res->hdr.flags & IWL_CMD_FAILED_MSK) { | |
160 | IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n", | |
161 | res->hdr.flags); | |
162 | ret = -EIO; | |
163 | } | |
164 | ||
165 | if (ret == 0) { | |
166 | switch (res->u.add_sta.status) { | |
167 | case ADD_STA_SUCCESS_MSK: | |
24e5c401 | 168 | iwl_sta_ucode_activate(priv, sta->sta.sta_id); |
133636de TW |
169 | IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n"); |
170 | break; | |
171 | default: | |
172 | ret = -EIO; | |
173 | IWL_WARNING("REPLY_ADD_STA failed\n"); | |
174 | break; | |
175 | } | |
176 | } | |
177 | ||
178 | priv->alloc_rxb_skb--; | |
179 | dev_kfree_skb_any(cmd.meta.u.skb); | |
180 | ||
181 | return ret; | |
182 | } | |
947b13a7 | 183 | |
4f40e4d9 | 184 | static void iwl_set_ht_add_station(struct iwl_priv *priv, u8 index, |
d9fe60de | 185 | struct ieee80211_sta_ht_cap *sta_ht_inf) |
4f40e4d9 TW |
186 | { |
187 | __le32 sta_flags; | |
188 | u8 mimo_ps_mode; | |
189 | ||
190 | if (!sta_ht_inf || !sta_ht_inf->ht_supported) | |
191 | goto done; | |
192 | ||
00c5ae2f | 193 | mimo_ps_mode = (sta_ht_inf->cap & IEEE80211_HT_CAP_SM_PS) >> 2; |
4f40e4d9 TW |
194 | |
195 | sta_flags = priv->stations[index].sta.station_flags; | |
196 | ||
197 | sta_flags &= ~(STA_FLG_RTS_MIMO_PROT_MSK | STA_FLG_MIMO_DIS_MSK); | |
198 | ||
199 | switch (mimo_ps_mode) { | |
00c5ae2f | 200 | case WLAN_HT_CAP_SM_PS_STATIC: |
4f40e4d9 TW |
201 | sta_flags |= STA_FLG_MIMO_DIS_MSK; |
202 | break; | |
00c5ae2f | 203 | case WLAN_HT_CAP_SM_PS_DYNAMIC: |
4f40e4d9 TW |
204 | sta_flags |= STA_FLG_RTS_MIMO_PROT_MSK; |
205 | break; | |
00c5ae2f | 206 | case WLAN_HT_CAP_SM_PS_DISABLED: |
4f40e4d9 TW |
207 | break; |
208 | default: | |
6f147926 | 209 | IWL_WARNING("Invalid MIMO PS mode %d\n", mimo_ps_mode); |
4f40e4d9 TW |
210 | break; |
211 | } | |
212 | ||
213 | sta_flags |= cpu_to_le32( | |
214 | (u32)sta_ht_inf->ampdu_factor << STA_FLG_MAX_AGG_SIZE_POS); | |
215 | ||
216 | sta_flags |= cpu_to_le32( | |
217 | (u32)sta_ht_inf->ampdu_density << STA_FLG_AGG_MPDU_DENSITY_POS); | |
218 | ||
219 | if (iwl_is_fat_tx_allowed(priv, sta_ht_inf)) | |
220 | sta_flags |= STA_FLG_FAT_EN_MSK; | |
221 | else | |
222 | sta_flags &= ~STA_FLG_FAT_EN_MSK; | |
223 | ||
224 | priv->stations[index].sta.station_flags = sta_flags; | |
225 | done: | |
226 | return; | |
227 | } | |
4f40e4d9 TW |
228 | |
229 | /** | |
230 | * iwl_add_station_flags - Add station to tables in driver and device | |
231 | */ | |
232 | u8 iwl_add_station_flags(struct iwl_priv *priv, const u8 *addr, int is_ap, | |
d9fe60de | 233 | u8 flags, struct ieee80211_sta_ht_cap *ht_info) |
4f40e4d9 TW |
234 | { |
235 | int i; | |
24e5c401 | 236 | int sta_id = IWL_INVALID_STATION; |
4f40e4d9 TW |
237 | struct iwl_station_entry *station; |
238 | unsigned long flags_spin; | |
4f40e4d9 TW |
239 | |
240 | spin_lock_irqsave(&priv->sta_lock, flags_spin); | |
241 | if (is_ap) | |
24e5c401 | 242 | sta_id = IWL_AP_ID; |
4f40e4d9 | 243 | else if (is_broadcast_ether_addr(addr)) |
24e5c401 | 244 | sta_id = priv->hw_params.bcast_sta_id; |
4f40e4d9 TW |
245 | else |
246 | for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++) { | |
247 | if (!compare_ether_addr(priv->stations[i].sta.sta.addr, | |
248 | addr)) { | |
24e5c401 | 249 | sta_id = i; |
4f40e4d9 TW |
250 | break; |
251 | } | |
252 | ||
253 | if (!priv->stations[i].used && | |
24e5c401 EG |
254 | sta_id == IWL_INVALID_STATION) |
255 | sta_id = i; | |
4f40e4d9 TW |
256 | } |
257 | ||
4f40e4d9 | 258 | /* These two conditions have the same outcome, but keep them separate |
24e5c401 EG |
259 | since they have different meanings */ |
260 | if (unlikely(sta_id == IWL_INVALID_STATION)) { | |
4f40e4d9 | 261 | spin_unlock_irqrestore(&priv->sta_lock, flags_spin); |
24e5c401 | 262 | return sta_id; |
4f40e4d9 TW |
263 | } |
264 | ||
24e5c401 EG |
265 | if (priv->stations[sta_id].used && |
266 | !compare_ether_addr(priv->stations[sta_id].sta.sta.addr, addr)) { | |
4f40e4d9 | 267 | spin_unlock_irqrestore(&priv->sta_lock, flags_spin); |
24e5c401 | 268 | return sta_id; |
4f40e4d9 TW |
269 | } |
270 | ||
271 | ||
24e5c401 EG |
272 | station = &priv->stations[sta_id]; |
273 | station->used = IWL_STA_DRIVER_ACTIVE; | |
e174961c JB |
274 | IWL_DEBUG_ASSOC("Add STA to driver ID %d: %pM\n", |
275 | sta_id, addr); | |
4f40e4d9 TW |
276 | priv->num_stations++; |
277 | ||
278 | /* Set up the REPLY_ADD_STA command to send to device */ | |
279 | memset(&station->sta, 0, sizeof(struct iwl_addsta_cmd)); | |
280 | memcpy(station->sta.sta.addr, addr, ETH_ALEN); | |
281 | station->sta.mode = 0; | |
24e5c401 | 282 | station->sta.sta.sta_id = sta_id; |
4f40e4d9 TW |
283 | station->sta.station_flags = 0; |
284 | ||
285 | /* BCAST station and IBSS stations do not work in HT mode */ | |
24e5c401 | 286 | if (sta_id != priv->hw_params.bcast_sta_id && |
05c914fe | 287 | priv->iw_mode != NL80211_IFTYPE_ADHOC) |
24e5c401 | 288 | iwl_set_ht_add_station(priv, sta_id, ht_info); |
4f40e4d9 TW |
289 | |
290 | spin_unlock_irqrestore(&priv->sta_lock, flags_spin); | |
291 | ||
292 | /* Add station to device's station table */ | |
293 | iwl_send_add_sta(priv, &station->sta, flags); | |
24e5c401 | 294 | return sta_id; |
4f40e4d9 TW |
295 | |
296 | } | |
297 | EXPORT_SYMBOL(iwl_add_station_flags); | |
298 | ||
24e5c401 | 299 | static void iwl_sta_ucode_deactivate(struct iwl_priv *priv, const char *addr) |
7a999bf0 TW |
300 | { |
301 | unsigned long flags; | |
24e5c401 EG |
302 | u8 sta_id = iwl_find_station(priv, addr); |
303 | ||
304 | BUG_ON(sta_id == IWL_INVALID_STATION); | |
305 | ||
e174961c | 306 | IWL_DEBUG_ASSOC("Removed STA from Ucode: %pM\n", addr); |
24e5c401 EG |
307 | |
308 | spin_lock_irqsave(&priv->sta_lock, flags); | |
309 | ||
310 | /* Ucode must be active and driver must be non active */ | |
311 | if (priv->stations[sta_id].used != IWL_STA_UCODE_ACTIVE) | |
312 | IWL_ERROR("removed non active STA %d\n", sta_id); | |
313 | ||
314 | priv->stations[sta_id].used &= ~IWL_STA_UCODE_ACTIVE; | |
315 | ||
316 | memset(&priv->stations[sta_id], 0, sizeof(struct iwl_station_entry)); | |
317 | spin_unlock_irqrestore(&priv->sta_lock, flags); | |
7a999bf0 TW |
318 | } |
319 | ||
320 | static int iwl_remove_sta_callback(struct iwl_priv *priv, | |
321 | struct iwl_cmd *cmd, struct sk_buff *skb) | |
322 | { | |
323 | struct iwl_rx_packet *res = NULL; | |
3257e5d4 TW |
324 | struct iwl_rem_sta_cmd *rm_sta = |
325 | (struct iwl_rem_sta_cmd *)cmd->cmd.payload; | |
326 | const char *addr = rm_sta->addr; | |
7a999bf0 TW |
327 | |
328 | if (!skb) { | |
329 | IWL_ERROR("Error: Response NULL in REPLY_REMOVE_STA.\n"); | |
330 | return 1; | |
331 | } | |
332 | ||
333 | res = (struct iwl_rx_packet *)skb->data; | |
334 | if (res->hdr.flags & IWL_CMD_FAILED_MSK) { | |
335 | IWL_ERROR("Bad return from REPLY_REMOVE_STA (0x%08X)\n", | |
336 | res->hdr.flags); | |
337 | return 1; | |
338 | } | |
339 | ||
340 | switch (res->u.rem_sta.status) { | |
341 | case REM_STA_SUCCESS_MSK: | |
342 | iwl_sta_ucode_deactivate(priv, addr); | |
343 | break; | |
344 | default: | |
24e5c401 | 345 | IWL_ERROR("REPLY_REMOVE_STA failed\n"); |
7a999bf0 TW |
346 | break; |
347 | } | |
348 | ||
349 | /* We didn't cache the SKB; let the caller free it */ | |
350 | return 1; | |
351 | } | |
352 | ||
353 | static int iwl_send_remove_station(struct iwl_priv *priv, const u8 *addr, | |
354 | u8 flags) | |
355 | { | |
356 | struct iwl_rx_packet *res = NULL; | |
357 | int ret; | |
358 | ||
359 | struct iwl_rem_sta_cmd rm_sta_cmd; | |
360 | ||
361 | struct iwl_host_cmd cmd = { | |
362 | .id = REPLY_REMOVE_STA, | |
363 | .len = sizeof(struct iwl_rem_sta_cmd), | |
364 | .meta.flags = flags, | |
365 | .data = &rm_sta_cmd, | |
366 | }; | |
367 | ||
368 | memset(&rm_sta_cmd, 0, sizeof(rm_sta_cmd)); | |
369 | rm_sta_cmd.num_sta = 1; | |
370 | memcpy(&rm_sta_cmd.addr, addr , ETH_ALEN); | |
371 | ||
372 | if (flags & CMD_ASYNC) | |
373 | cmd.meta.u.callback = iwl_remove_sta_callback; | |
374 | else | |
375 | cmd.meta.flags |= CMD_WANT_SKB; | |
376 | ret = iwl_send_cmd(priv, &cmd); | |
377 | ||
378 | if (ret || (flags & CMD_ASYNC)) | |
379 | return ret; | |
380 | ||
381 | res = (struct iwl_rx_packet *)cmd.meta.u.skb->data; | |
382 | if (res->hdr.flags & IWL_CMD_FAILED_MSK) { | |
383 | IWL_ERROR("Bad return from REPLY_REMOVE_STA (0x%08X)\n", | |
384 | res->hdr.flags); | |
385 | ret = -EIO; | |
386 | } | |
387 | ||
388 | if (!ret) { | |
389 | switch (res->u.rem_sta.status) { | |
390 | case REM_STA_SUCCESS_MSK: | |
391 | iwl_sta_ucode_deactivate(priv, addr); | |
392 | IWL_DEBUG_ASSOC("REPLY_REMOVE_STA PASSED\n"); | |
393 | break; | |
394 | default: | |
395 | ret = -EIO; | |
396 | IWL_ERROR("REPLY_REMOVE_STA failed\n"); | |
397 | break; | |
398 | } | |
399 | } | |
400 | ||
401 | priv->alloc_rxb_skb--; | |
402 | dev_kfree_skb_any(cmd.meta.u.skb); | |
403 | ||
404 | return ret; | |
405 | } | |
be1f3ab6 | 406 | |
7a999bf0 TW |
407 | /** |
408 | * iwl_remove_station - Remove driver's knowledge of station. | |
7a999bf0 | 409 | */ |
24e5c401 | 410 | int iwl_remove_station(struct iwl_priv *priv, const u8 *addr, int is_ap) |
7a999bf0 | 411 | { |
24e5c401 EG |
412 | int sta_id = IWL_INVALID_STATION; |
413 | int i, ret = -EINVAL; | |
7a999bf0 TW |
414 | unsigned long flags; |
415 | ||
416 | spin_lock_irqsave(&priv->sta_lock, flags); | |
417 | ||
418 | if (is_ap) | |
24e5c401 | 419 | sta_id = IWL_AP_ID; |
7a999bf0 | 420 | else if (is_broadcast_ether_addr(addr)) |
24e5c401 | 421 | sta_id = priv->hw_params.bcast_sta_id; |
7a999bf0 TW |
422 | else |
423 | for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++) | |
424 | if (priv->stations[i].used && | |
425 | !compare_ether_addr(priv->stations[i].sta.sta.addr, | |
426 | addr)) { | |
24e5c401 | 427 | sta_id = i; |
7a999bf0 TW |
428 | break; |
429 | } | |
430 | ||
24e5c401 | 431 | if (unlikely(sta_id == IWL_INVALID_STATION)) |
7a999bf0 TW |
432 | goto out; |
433 | ||
e174961c JB |
434 | IWL_DEBUG_ASSOC("Removing STA from driver:%d %pM\n", |
435 | sta_id, addr); | |
24e5c401 EG |
436 | |
437 | if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE)) { | |
e174961c JB |
438 | IWL_ERROR("Removing %pM but non DRIVER active\n", |
439 | addr); | |
24e5c401 EG |
440 | goto out; |
441 | } | |
442 | ||
443 | if (!(priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE)) { | |
e174961c JB |
444 | IWL_ERROR("Removing %pM but non UCODE active\n", |
445 | addr); | |
24e5c401 | 446 | goto out; |
7a999bf0 TW |
447 | } |
448 | ||
24e5c401 EG |
449 | |
450 | priv->stations[sta_id].used &= ~IWL_STA_DRIVER_ACTIVE; | |
451 | ||
452 | priv->num_stations--; | |
453 | ||
7a999bf0 | 454 | BUG_ON(priv->num_stations < 0); |
24e5c401 | 455 | |
7a999bf0 | 456 | spin_unlock_irqrestore(&priv->sta_lock, flags); |
24e5c401 EG |
457 | |
458 | ret = iwl_send_remove_station(priv, addr, CMD_ASYNC); | |
459 | return ret; | |
7a999bf0 TW |
460 | out: |
461 | spin_unlock_irqrestore(&priv->sta_lock, flags); | |
24e5c401 | 462 | return ret; |
7a999bf0 TW |
463 | } |
464 | EXPORT_SYMBOL(iwl_remove_station); | |
24e5c401 | 465 | |
83dde8c9 WT |
466 | /** |
467 | * iwl_clear_stations_table - Clear the driver's station table | |
468 | * | |
469 | * NOTE: This does not clear or otherwise alter the device's station table. | |
470 | */ | |
471 | void iwl_clear_stations_table(struct iwl_priv *priv) | |
472 | { | |
473 | unsigned long flags; | |
474 | ||
475 | spin_lock_irqsave(&priv->sta_lock, flags); | |
476 | ||
477 | if (iwl_is_alive(priv) && | |
478 | !test_bit(STATUS_EXIT_PENDING, &priv->status) && | |
479 | iwl_send_cmd_pdu_async(priv, REPLY_REMOVE_ALL_STA, 0, NULL, NULL)) | |
480 | IWL_ERROR("Couldn't clear the station table\n"); | |
481 | ||
482 | priv->num_stations = 0; | |
483 | memset(priv->stations, 0, sizeof(priv->stations)); | |
484 | ||
485 | spin_unlock_irqrestore(&priv->sta_lock, flags); | |
486 | } | |
487 | EXPORT_SYMBOL(iwl_clear_stations_table); | |
488 | ||
be1f3ab6 | 489 | static int iwl_get_free_ucode_key_index(struct iwl_priv *priv) |
80fb47a1 EG |
490 | { |
491 | int i; | |
492 | ||
493 | for (i = 0; i < STA_KEY_MAX_NUM; i++) | |
77bab602 | 494 | if (!test_and_set_bit(i, &priv->ucode_key_table)) |
80fb47a1 EG |
495 | return i; |
496 | ||
40a9a829 | 497 | return WEP_INVALID_OFFSET; |
80fb47a1 | 498 | } |
6974e363 EG |
499 | |
500 | int iwl_send_static_wepkey_cmd(struct iwl_priv *priv, u8 send_if_empty) | |
501 | { | |
502 | int i, not_empty = 0; | |
503 | u8 buff[sizeof(struct iwl_wep_cmd) + | |
504 | sizeof(struct iwl_wep_key) * WEP_KEYS_MAX]; | |
505 | struct iwl_wep_cmd *wep_cmd = (struct iwl_wep_cmd *)buff; | |
506 | size_t cmd_size = sizeof(struct iwl_wep_cmd); | |
507 | struct iwl_host_cmd cmd = { | |
508 | .id = REPLY_WEPKEY, | |
509 | .data = wep_cmd, | |
510 | .meta.flags = CMD_ASYNC, | |
511 | }; | |
512 | ||
513 | memset(wep_cmd, 0, cmd_size + | |
514 | (sizeof(struct iwl_wep_key) * WEP_KEYS_MAX)); | |
515 | ||
516 | for (i = 0; i < WEP_KEYS_MAX ; i++) { | |
517 | wep_cmd->key[i].key_index = i; | |
518 | if (priv->wep_keys[i].key_size) { | |
519 | wep_cmd->key[i].key_offset = i; | |
520 | not_empty = 1; | |
521 | } else { | |
522 | wep_cmd->key[i].key_offset = WEP_INVALID_OFFSET; | |
523 | } | |
524 | ||
525 | wep_cmd->key[i].key_size = priv->wep_keys[i].key_size; | |
526 | memcpy(&wep_cmd->key[i].key[3], priv->wep_keys[i].key, | |
527 | priv->wep_keys[i].key_size); | |
528 | } | |
529 | ||
530 | wep_cmd->global_key_type = WEP_KEY_WEP_TYPE; | |
531 | wep_cmd->num_keys = WEP_KEYS_MAX; | |
532 | ||
533 | cmd_size += sizeof(struct iwl_wep_key) * WEP_KEYS_MAX; | |
534 | ||
535 | cmd.len = cmd_size; | |
536 | ||
537 | if (not_empty || send_if_empty) | |
538 | return iwl_send_cmd(priv, &cmd); | |
539 | else | |
540 | return 0; | |
541 | } | |
27aaba0c | 542 | EXPORT_SYMBOL(iwl_send_static_wepkey_cmd); |
6974e363 EG |
543 | |
544 | int iwl_remove_default_wep_key(struct iwl_priv *priv, | |
80fb47a1 | 545 | struct ieee80211_key_conf *keyconf) |
6974e363 EG |
546 | { |
547 | int ret; | |
548 | unsigned long flags; | |
549 | ||
550 | spin_lock_irqsave(&priv->sta_lock, flags); | |
80fb47a1 EG |
551 | |
552 | if (!test_and_clear_bit(keyconf->keyidx, &priv->ucode_key_table)) | |
553 | IWL_ERROR("index %d not used in uCode key table.\n", | |
554 | keyconf->keyidx); | |
555 | ||
6974e363 | 556 | priv->default_wep_key--; |
80fb47a1 | 557 | memset(&priv->wep_keys[keyconf->keyidx], 0, sizeof(priv->wep_keys[0])); |
6974e363 | 558 | ret = iwl_send_static_wepkey_cmd(priv, 1); |
4564ce8b EG |
559 | IWL_DEBUG_WEP("Remove default WEP key: idx=%d ret=%d\n", |
560 | keyconf->keyidx, ret); | |
6974e363 EG |
561 | spin_unlock_irqrestore(&priv->sta_lock, flags); |
562 | ||
563 | return ret; | |
564 | } | |
27aaba0c | 565 | EXPORT_SYMBOL(iwl_remove_default_wep_key); |
6974e363 EG |
566 | |
567 | int iwl_set_default_wep_key(struct iwl_priv *priv, | |
568 | struct ieee80211_key_conf *keyconf) | |
569 | { | |
570 | int ret; | |
571 | unsigned long flags; | |
572 | ||
4564ce8b EG |
573 | if (keyconf->keylen != WEP_KEY_LEN_128 && |
574 | keyconf->keylen != WEP_KEY_LEN_64) { | |
575 | IWL_DEBUG_WEP("Bad WEP key length %d\n", keyconf->keylen); | |
576 | return -EINVAL; | |
577 | } | |
578 | ||
6974e363 | 579 | keyconf->flags &= ~IEEE80211_KEY_FLAG_GENERATE_IV; |
ccc038ab | 580 | keyconf->hw_key_idx = HW_KEY_DEFAULT; |
6974e363 EG |
581 | priv->stations[IWL_AP_ID].keyinfo.alg = ALG_WEP; |
582 | ||
583 | spin_lock_irqsave(&priv->sta_lock, flags); | |
584 | priv->default_wep_key++; | |
585 | ||
80fb47a1 EG |
586 | if (test_and_set_bit(keyconf->keyidx, &priv->ucode_key_table)) |
587 | IWL_ERROR("index %d already used in uCode key table.\n", | |
588 | keyconf->keyidx); | |
589 | ||
6974e363 EG |
590 | priv->wep_keys[keyconf->keyidx].key_size = keyconf->keylen; |
591 | memcpy(&priv->wep_keys[keyconf->keyidx].key, &keyconf->key, | |
592 | keyconf->keylen); | |
593 | ||
594 | ret = iwl_send_static_wepkey_cmd(priv, 0); | |
4564ce8b EG |
595 | IWL_DEBUG_WEP("Set default WEP key: len=%d idx=%d ret=%d\n", |
596 | keyconf->keylen, keyconf->keyidx, ret); | |
6974e363 EG |
597 | spin_unlock_irqrestore(&priv->sta_lock, flags); |
598 | ||
599 | return ret; | |
600 | } | |
27aaba0c | 601 | EXPORT_SYMBOL(iwl_set_default_wep_key); |
6974e363 | 602 | |
7480513f | 603 | static int iwl_set_wep_dynamic_key_info(struct iwl_priv *priv, |
0211ddda EG |
604 | struct ieee80211_key_conf *keyconf, |
605 | u8 sta_id) | |
606 | { | |
607 | unsigned long flags; | |
608 | __le16 key_flags = 0; | |
609 | int ret; | |
610 | ||
611 | keyconf->flags &= ~IEEE80211_KEY_FLAG_GENERATE_IV; | |
0211ddda EG |
612 | |
613 | key_flags |= (STA_KEY_FLG_WEP | STA_KEY_FLG_MAP_KEY_MSK); | |
614 | key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS); | |
615 | key_flags &= ~STA_KEY_FLG_INVALID; | |
616 | ||
617 | if (keyconf->keylen == WEP_KEY_LEN_128) | |
618 | key_flags |= STA_KEY_FLG_KEY_SIZE_MSK; | |
619 | ||
5425e490 | 620 | if (sta_id == priv->hw_params.bcast_sta_id) |
0211ddda EG |
621 | key_flags |= STA_KEY_MULTICAST_MSK; |
622 | ||
623 | spin_lock_irqsave(&priv->sta_lock, flags); | |
624 | ||
625 | priv->stations[sta_id].keyinfo.alg = keyconf->alg; | |
626 | priv->stations[sta_id].keyinfo.keylen = keyconf->keylen; | |
627 | priv->stations[sta_id].keyinfo.keyidx = keyconf->keyidx; | |
628 | ||
629 | memcpy(priv->stations[sta_id].keyinfo.key, | |
630 | keyconf->key, keyconf->keylen); | |
631 | ||
632 | memcpy(&priv->stations[sta_id].sta.key.key[3], | |
633 | keyconf->key, keyconf->keylen); | |
634 | ||
3ec47732 EG |
635 | if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK) |
636 | == STA_KEY_FLG_NO_ENC) | |
637 | priv->stations[sta_id].sta.key.key_offset = | |
80fb47a1 | 638 | iwl_get_free_ucode_key_index(priv); |
3ec47732 EG |
639 | /* else, we are overriding an existing key => no need to allocated room |
640 | * in uCode. */ | |
0211ddda | 641 | |
40a9a829 TW |
642 | WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET, |
643 | "no space for new kew"); | |
644 | ||
3ec47732 | 645 | priv->stations[sta_id].sta.key.key_flags = key_flags; |
0211ddda EG |
646 | priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK; |
647 | priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; | |
648 | ||
133636de | 649 | ret = iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC); |
0211ddda EG |
650 | |
651 | spin_unlock_irqrestore(&priv->sta_lock, flags); | |
652 | ||
653 | return ret; | |
654 | } | |
7480513f EG |
655 | |
656 | static int iwl_set_ccmp_dynamic_key_info(struct iwl_priv *priv, | |
657 | struct ieee80211_key_conf *keyconf, | |
658 | u8 sta_id) | |
659 | { | |
660 | unsigned long flags; | |
661 | __le16 key_flags = 0; | |
40a9a829 | 662 | int ret; |
7480513f EG |
663 | |
664 | key_flags |= (STA_KEY_FLG_CCMP | STA_KEY_FLG_MAP_KEY_MSK); | |
665 | key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS); | |
666 | key_flags &= ~STA_KEY_FLG_INVALID; | |
667 | ||
5425e490 | 668 | if (sta_id == priv->hw_params.bcast_sta_id) |
7480513f EG |
669 | key_flags |= STA_KEY_MULTICAST_MSK; |
670 | ||
671 | keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; | |
7480513f EG |
672 | |
673 | spin_lock_irqsave(&priv->sta_lock, flags); | |
674 | priv->stations[sta_id].keyinfo.alg = keyconf->alg; | |
675 | priv->stations[sta_id].keyinfo.keylen = keyconf->keylen; | |
676 | ||
677 | memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key, | |
678 | keyconf->keylen); | |
679 | ||
680 | memcpy(priv->stations[sta_id].sta.key.key, keyconf->key, | |
681 | keyconf->keylen); | |
682 | ||
3ec47732 EG |
683 | if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK) |
684 | == STA_KEY_FLG_NO_ENC) | |
685 | priv->stations[sta_id].sta.key.key_offset = | |
686 | iwl_get_free_ucode_key_index(priv); | |
687 | /* else, we are overriding an existing key => no need to allocated room | |
688 | * in uCode. */ | |
689 | ||
40a9a829 TW |
690 | WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET, |
691 | "no space for new kew"); | |
692 | ||
7480513f EG |
693 | priv->stations[sta_id].sta.key.key_flags = key_flags; |
694 | priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK; | |
695 | priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; | |
696 | ||
40a9a829 TW |
697 | ret = iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC); |
698 | ||
7480513f EG |
699 | spin_unlock_irqrestore(&priv->sta_lock, flags); |
700 | ||
40a9a829 | 701 | return ret; |
7480513f EG |
702 | } |
703 | ||
704 | static int iwl_set_tkip_dynamic_key_info(struct iwl_priv *priv, | |
705 | struct ieee80211_key_conf *keyconf, | |
706 | u8 sta_id) | |
707 | { | |
708 | unsigned long flags; | |
709 | int ret = 0; | |
710 | ||
711 | keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; | |
712 | keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC; | |
7480513f EG |
713 | |
714 | spin_lock_irqsave(&priv->sta_lock, flags); | |
715 | ||
716 | priv->stations[sta_id].keyinfo.alg = keyconf->alg; | |
7480513f | 717 | priv->stations[sta_id].keyinfo.keylen = 16; |
3ec47732 EG |
718 | |
719 | if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK) | |
720 | == STA_KEY_FLG_NO_ENC) | |
721 | priv->stations[sta_id].sta.key.key_offset = | |
77bab602 | 722 | iwl_get_free_ucode_key_index(priv); |
3ec47732 EG |
723 | /* else, we are overriding an existing key => no need to allocated room |
724 | * in uCode. */ | |
7480513f | 725 | |
40a9a829 TW |
726 | WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET, |
727 | "no space for new kew"); | |
728 | ||
7480513f EG |
729 | /* This copy is acutally not needed: we get the key with each TX */ |
730 | memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key, 16); | |
731 | ||
732 | memcpy(priv->stations[sta_id].sta.key.key, keyconf->key, 16); | |
733 | ||
734 | spin_unlock_irqrestore(&priv->sta_lock, flags); | |
735 | ||
736 | return ret; | |
737 | } | |
738 | ||
9f58671e TW |
739 | void iwl_update_tkip_key(struct iwl_priv *priv, |
740 | struct ieee80211_key_conf *keyconf, | |
741 | const u8 *addr, u32 iv32, u16 *phase1key) | |
742 | { | |
743 | u8 sta_id = IWL_INVALID_STATION; | |
744 | unsigned long flags; | |
745 | __le16 key_flags = 0; | |
746 | int i; | |
747 | DECLARE_MAC_BUF(mac); | |
748 | ||
749 | sta_id = iwl_find_station(priv, addr); | |
750 | if (sta_id == IWL_INVALID_STATION) { | |
751 | IWL_DEBUG_MAC80211("leave - %pM not in station map.\n", | |
752 | addr); | |
753 | return; | |
754 | } | |
755 | ||
756 | if (iwl_scan_cancel(priv)) { | |
757 | /* cancel scan failed, just live w/ bad key and rely | |
758 | briefly on SW decryption */ | |
759 | return; | |
760 | } | |
761 | ||
762 | key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK); | |
763 | key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS); | |
764 | key_flags &= ~STA_KEY_FLG_INVALID; | |
765 | ||
766 | if (sta_id == priv->hw_params.bcast_sta_id) | |
767 | key_flags |= STA_KEY_MULTICAST_MSK; | |
768 | ||
769 | spin_lock_irqsave(&priv->sta_lock, flags); | |
770 | ||
771 | priv->stations[sta_id].sta.key.key_flags = key_flags; | |
772 | priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32; | |
773 | ||
774 | for (i = 0; i < 5; i++) | |
775 | priv->stations[sta_id].sta.key.tkip_rx_ttak[i] = | |
776 | cpu_to_le16(phase1key[i]); | |
777 | ||
778 | priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK; | |
779 | priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; | |
780 | ||
781 | iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC); | |
782 | ||
783 | spin_unlock_irqrestore(&priv->sta_lock, flags); | |
784 | ||
785 | } | |
786 | EXPORT_SYMBOL(iwl_update_tkip_key); | |
787 | ||
3ec47732 EG |
788 | int iwl_remove_dynamic_key(struct iwl_priv *priv, |
789 | struct ieee80211_key_conf *keyconf, | |
790 | u8 sta_id) | |
7480513f EG |
791 | { |
792 | unsigned long flags; | |
3ec47732 EG |
793 | int ret = 0; |
794 | u16 key_flags; | |
795 | u8 keyidx; | |
7480513f | 796 | |
ccc038ab | 797 | priv->key_mapping_key--; |
7480513f EG |
798 | |
799 | spin_lock_irqsave(&priv->sta_lock, flags); | |
3ec47732 EG |
800 | key_flags = le16_to_cpu(priv->stations[sta_id].sta.key.key_flags); |
801 | keyidx = (key_flags >> STA_KEY_FLG_KEYID_POS) & 0x3; | |
802 | ||
4564ce8b EG |
803 | IWL_DEBUG_WEP("Remove dynamic key: idx=%d sta=%d\n", |
804 | keyconf->keyidx, sta_id); | |
805 | ||
3ec47732 EG |
806 | if (keyconf->keyidx != keyidx) { |
807 | /* We need to remove a key with index different that the one | |
808 | * in the uCode. This means that the key we need to remove has | |
809 | * been replaced by another one with different index. | |
810 | * Don't do anything and return ok | |
811 | */ | |
812 | spin_unlock_irqrestore(&priv->sta_lock, flags); | |
813 | return 0; | |
814 | } | |
815 | ||
40a9a829 TW |
816 | if (priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET) { |
817 | IWL_WARNING("Removing wrong key %d 0x%x\n", | |
818 | keyconf->keyidx, key_flags); | |
819 | spin_unlock_irqrestore(&priv->sta_lock, flags); | |
820 | return 0; | |
821 | } | |
822 | ||
7480513f EG |
823 | if (!test_and_clear_bit(priv->stations[sta_id].sta.key.key_offset, |
824 | &priv->ucode_key_table)) | |
825 | IWL_ERROR("index %d not used in uCode key table.\n", | |
826 | priv->stations[sta_id].sta.key.key_offset); | |
827 | memset(&priv->stations[sta_id].keyinfo, 0, | |
6def9761 | 828 | sizeof(struct iwl_hw_key)); |
7480513f EG |
829 | memset(&priv->stations[sta_id].sta.key, 0, |
830 | sizeof(struct iwl4965_keyinfo)); | |
3ec47732 EG |
831 | priv->stations[sta_id].sta.key.key_flags = |
832 | STA_KEY_FLG_NO_ENC | STA_KEY_FLG_INVALID; | |
833 | priv->stations[sta_id].sta.key.key_offset = WEP_INVALID_OFFSET; | |
7480513f EG |
834 | priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK; |
835 | priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; | |
7480513f | 836 | |
ccc038ab | 837 | ret = iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC); |
3ec47732 EG |
838 | spin_unlock_irqrestore(&priv->sta_lock, flags); |
839 | return ret; | |
7480513f | 840 | } |
27aaba0c | 841 | EXPORT_SYMBOL(iwl_remove_dynamic_key); |
7480513f EG |
842 | |
843 | int iwl_set_dynamic_key(struct iwl_priv *priv, | |
ccc038ab | 844 | struct ieee80211_key_conf *keyconf, u8 sta_id) |
7480513f EG |
845 | { |
846 | int ret; | |
847 | ||
ccc038ab EG |
848 | priv->key_mapping_key++; |
849 | keyconf->hw_key_idx = HW_KEY_DYNAMIC; | |
7480513f | 850 | |
ccc038ab | 851 | switch (keyconf->alg) { |
7480513f | 852 | case ALG_CCMP: |
ccc038ab | 853 | ret = iwl_set_ccmp_dynamic_key_info(priv, keyconf, sta_id); |
7480513f EG |
854 | break; |
855 | case ALG_TKIP: | |
ccc038ab | 856 | ret = iwl_set_tkip_dynamic_key_info(priv, keyconf, sta_id); |
7480513f EG |
857 | break; |
858 | case ALG_WEP: | |
ccc038ab | 859 | ret = iwl_set_wep_dynamic_key_info(priv, keyconf, sta_id); |
7480513f EG |
860 | break; |
861 | default: | |
ccc038ab | 862 | IWL_ERROR("Unknown alg: %s alg = %d\n", __func__, keyconf->alg); |
7480513f EG |
863 | ret = -EINVAL; |
864 | } | |
865 | ||
4564ce8b EG |
866 | IWL_DEBUG_WEP("Set dynamic key: alg= %d len=%d idx=%d sta=%d ret=%d\n", |
867 | keyconf->alg, keyconf->keylen, keyconf->keyidx, | |
868 | sta_id, ret); | |
869 | ||
7480513f EG |
870 | return ret; |
871 | } | |
27aaba0c | 872 | EXPORT_SYMBOL(iwl_set_dynamic_key); |
7480513f | 873 | |
66c73db7 TW |
874 | #ifdef CONFIG_IWLWIFI_DEBUG |
875 | static void iwl_dump_lq_cmd(struct iwl_priv *priv, | |
876 | struct iwl_link_quality_cmd *lq) | |
877 | { | |
878 | int i; | |
879 | IWL_DEBUG_RATE("lq station id 0x%x\n", lq->sta_id); | |
a96a27f9 | 880 | IWL_DEBUG_RATE("lq ant 0x%X 0x%X\n", |
66c73db7 TW |
881 | lq->general_params.single_stream_ant_msk, |
882 | lq->general_params.dual_stream_ant_msk); | |
883 | ||
884 | for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) | |
885 | IWL_DEBUG_RATE("lq index %d 0x%X\n", | |
886 | i, lq->rs_table[i].rate_n_flags); | |
887 | } | |
888 | #else | |
889 | static inline void iwl_dump_lq_cmd(struct iwl_priv *priv, | |
890 | struct iwl_link_quality_cmd *lq) | |
891 | { | |
892 | } | |
893 | #endif | |
894 | ||
895 | int iwl_send_lq_cmd(struct iwl_priv *priv, | |
896 | struct iwl_link_quality_cmd *lq, u8 flags) | |
897 | { | |
898 | struct iwl_host_cmd cmd = { | |
899 | .id = REPLY_TX_LINK_QUALITY_CMD, | |
900 | .len = sizeof(struct iwl_link_quality_cmd), | |
901 | .meta.flags = flags, | |
902 | .data = lq, | |
903 | }; | |
904 | ||
905 | if ((lq->sta_id == 0xFF) && | |
05c914fe | 906 | (priv->iw_mode == NL80211_IFTYPE_ADHOC)) |
66c73db7 TW |
907 | return -EINVAL; |
908 | ||
909 | if (lq->sta_id == 0xFF) | |
910 | lq->sta_id = IWL_AP_ID; | |
911 | ||
3ac7f146 | 912 | iwl_dump_lq_cmd(priv, lq); |
66c73db7 | 913 | |
36e1f16e | 914 | if (iwl_is_associated(priv) && priv->assoc_station_added) |
66c73db7 TW |
915 | return iwl_send_cmd(priv, &cmd); |
916 | ||
917 | return 0; | |
918 | } | |
919 | EXPORT_SYMBOL(iwl_send_lq_cmd); | |
920 | ||
4f40e4d9 TW |
921 | /** |
922 | * iwl_sta_init_lq - Initialize a station's hardware rate table | |
923 | * | |
924 | * The uCode's station table contains a table of fallback rates | |
925 | * for automatic fallback during transmission. | |
926 | * | |
927 | * NOTE: This sets up a default set of values. These will be replaced later | |
e227ceac | 928 | * if the driver's iwl-agn-rs rate scaling algorithm is used, instead of |
4f40e4d9 TW |
929 | * rc80211_simple. |
930 | * | |
931 | * NOTE: Run REPLY_ADD_STA command to set up station table entry, before | |
932 | * calling this function (which runs REPLY_TX_LINK_QUALITY_CMD, | |
933 | * which requires station table entry to exist). | |
934 | */ | |
935 | static void iwl_sta_init_lq(struct iwl_priv *priv, const u8 *addr, int is_ap) | |
936 | { | |
937 | int i, r; | |
938 | struct iwl_link_quality_cmd link_cmd = { | |
939 | .reserved1 = 0, | |
940 | }; | |
5d664a41 | 941 | u32 rate_flags; |
4f40e4d9 TW |
942 | |
943 | /* Set up the rate scaling to start at selected rate, fall back | |
944 | * all the way down to 1M in IEEE order, and then spin on 1M */ | |
945 | if (is_ap) | |
946 | r = IWL_RATE_54M_INDEX; | |
947 | else if (priv->band == IEEE80211_BAND_5GHZ) | |
948 | r = IWL_RATE_6M_INDEX; | |
949 | else | |
950 | r = IWL_RATE_1M_INDEX; | |
951 | ||
952 | for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) { | |
953 | rate_flags = 0; | |
954 | if (r >= IWL_FIRST_CCK_RATE && r <= IWL_LAST_CCK_RATE) | |
955 | rate_flags |= RATE_MCS_CCK_MSK; | |
956 | ||
5d664a41 TW |
957 | rate_flags |= first_antenna(priv->hw_params.valid_tx_ant) << |
958 | RATE_MCS_ANT_POS; | |
4f40e4d9 TW |
959 | |
960 | link_cmd.rs_table[i].rate_n_flags = | |
e7d326ac | 961 | iwl_hw_set_rate_n_flags(iwl_rates[r].plcp, rate_flags); |
eb4779c4 | 962 | r = iwl_get_prev_ieee_rate(r); |
4f40e4d9 TW |
963 | } |
964 | ||
5d664a41 TW |
965 | link_cmd.general_params.single_stream_ant_msk = |
966 | first_antenna(priv->hw_params.valid_tx_ant); | |
4f40e4d9 TW |
967 | link_cmd.general_params.dual_stream_ant_msk = 3; |
968 | link_cmd.agg_params.agg_dis_start_th = 3; | |
969 | link_cmd.agg_params.agg_time_limit = cpu_to_le16(4000); | |
970 | ||
971 | /* Update the rate scaling for control frame Tx to AP */ | |
972 | link_cmd.sta_id = is_ap ? IWL_AP_ID : priv->hw_params.bcast_sta_id; | |
973 | ||
974 | iwl_send_cmd_pdu_async(priv, REPLY_TX_LINK_QUALITY_CMD, | |
975 | sizeof(link_cmd), &link_cmd, NULL); | |
976 | } | |
24e5c401 | 977 | |
4f40e4d9 TW |
978 | /** |
979 | * iwl_rxon_add_station - add station into station table. | |
980 | * | |
981 | * there is only one AP station with id= IWL_AP_ID | |
a96a27f9 | 982 | * NOTE: mutex must be held before calling this function |
4f40e4d9 TW |
983 | */ |
984 | int iwl_rxon_add_station(struct iwl_priv *priv, const u8 *addr, int is_ap) | |
985 | { | |
ae5eb026 JB |
986 | struct ieee80211_sta *sta; |
987 | struct ieee80211_sta_ht_cap ht_config; | |
988 | struct ieee80211_sta_ht_cap *cur_ht_config = NULL; | |
4f40e4d9 TW |
989 | u8 sta_id; |
990 | ||
991 | /* Add station to device's station table */ | |
ae5eb026 JB |
992 | |
993 | /* | |
994 | * XXX: This check is definitely not correct, if we're an AP | |
995 | * it'll always be false which is not what we want, but | |
996 | * it doesn't look like iwlagn is prepared to be an HT | |
997 | * AP anyway. | |
998 | */ | |
999 | if (priv->current_ht_config.is_ht) { | |
1000 | rcu_read_lock(); | |
1001 | sta = ieee80211_find_sta(priv->hw, addr); | |
1002 | if (sta) { | |
1003 | memcpy(&ht_config, &sta->ht_cap, sizeof(ht_config)); | |
1004 | cur_ht_config = &ht_config; | |
1005 | } | |
1006 | rcu_read_unlock(); | |
1007 | } | |
1008 | ||
1009 | sta_id = iwl_add_station_flags(priv, addr, is_ap, | |
1010 | 0, cur_ht_config); | |
4f40e4d9 TW |
1011 | |
1012 | /* Set up default rate scaling table in device's station table */ | |
1013 | iwl_sta_init_lq(priv, addr, is_ap); | |
1014 | ||
1015 | return sta_id; | |
1016 | } | |
1017 | EXPORT_SYMBOL(iwl_rxon_add_station); | |
1018 | ||
4f40e4d9 TW |
1019 | /** |
1020 | * iwl_get_sta_id - Find station's index within station table | |
1021 | * | |
1022 | * If new IBSS station, create new entry in station table | |
1023 | */ | |
1024 | int iwl_get_sta_id(struct iwl_priv *priv, struct ieee80211_hdr *hdr) | |
1025 | { | |
1026 | int sta_id; | |
1027 | u16 fc = le16_to_cpu(hdr->frame_control); | |
4f40e4d9 TW |
1028 | |
1029 | /* If this frame is broadcast or management, use broadcast station id */ | |
1030 | if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) || | |
1031 | is_multicast_ether_addr(hdr->addr1)) | |
1032 | return priv->hw_params.bcast_sta_id; | |
1033 | ||
1034 | switch (priv->iw_mode) { | |
1035 | ||
1036 | /* If we are a client station in a BSS network, use the special | |
1037 | * AP station entry (that's the only station we communicate with) */ | |
05c914fe | 1038 | case NL80211_IFTYPE_STATION: |
4f40e4d9 TW |
1039 | return IWL_AP_ID; |
1040 | ||
1041 | /* If we are an AP, then find the station, or use BCAST */ | |
05c914fe | 1042 | case NL80211_IFTYPE_AP: |
4f40e4d9 TW |
1043 | sta_id = iwl_find_station(priv, hdr->addr1); |
1044 | if (sta_id != IWL_INVALID_STATION) | |
1045 | return sta_id; | |
1046 | return priv->hw_params.bcast_sta_id; | |
1047 | ||
1048 | /* If this frame is going out to an IBSS network, find the station, | |
1049 | * or create a new station table entry */ | |
05c914fe | 1050 | case NL80211_IFTYPE_ADHOC: |
4f40e4d9 TW |
1051 | sta_id = iwl_find_station(priv, hdr->addr1); |
1052 | if (sta_id != IWL_INVALID_STATION) | |
1053 | return sta_id; | |
1054 | ||
1055 | /* Create new station table entry */ | |
1056 | sta_id = iwl_add_station_flags(priv, hdr->addr1, | |
1057 | 0, CMD_ASYNC, NULL); | |
1058 | ||
1059 | if (sta_id != IWL_INVALID_STATION) | |
1060 | return sta_id; | |
1061 | ||
e174961c | 1062 | IWL_DEBUG_DROP("Station %pM not in station map. " |
4f40e4d9 | 1063 | "Defaulting to broadcast...\n", |
e174961c | 1064 | hdr->addr1); |
4f40e4d9 TW |
1065 | iwl_print_hex_dump(priv, IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr)); |
1066 | return priv->hw_params.bcast_sta_id; | |
1067 | ||
d10c4ec8 SG |
1068 | /* If we are in monitor mode, use BCAST. This is required for |
1069 | * packet injection. */ | |
05c914fe | 1070 | case NL80211_IFTYPE_MONITOR: |
d10c4ec8 SG |
1071 | return priv->hw_params.bcast_sta_id; |
1072 | ||
4f40e4d9 | 1073 | default: |
6f147926 | 1074 | IWL_WARNING("Unknown mode of operation: %d\n", priv->iw_mode); |
4f40e4d9 TW |
1075 | return priv->hw_params.bcast_sta_id; |
1076 | } | |
1077 | } | |
1078 | EXPORT_SYMBOL(iwl_get_sta_id); | |
1079 | ||
5083e563 | 1080 | /** |
9f58671e | 1081 | * iwl_sta_tx_modify_enable_tid - Enable Tx for this TID in station table |
5083e563 | 1082 | */ |
9f58671e | 1083 | void iwl_sta_tx_modify_enable_tid(struct iwl_priv *priv, int sta_id, int tid) |
5083e563 TW |
1084 | { |
1085 | unsigned long flags; | |
1086 | ||
1087 | /* Remove "disable" flag, to enable Tx for this TID */ | |
1088 | spin_lock_irqsave(&priv->sta_lock, flags); | |
1089 | priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_TID_DISABLE_TX; | |
1090 | priv->stations[sta_id].sta.tid_disable_tx &= cpu_to_le16(~(1 << tid)); | |
1091 | priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; | |
1092 | spin_unlock_irqrestore(&priv->sta_lock, flags); | |
1093 | ||
1094 | iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC); | |
1095 | } | |
9f58671e TW |
1096 | EXPORT_SYMBOL(iwl_sta_tx_modify_enable_tid); |
1097 | ||
1098 | int iwl_sta_rx_agg_start(struct iwl_priv *priv, | |
1099 | const u8 *addr, int tid, u16 ssn) | |
1100 | { | |
1101 | unsigned long flags; | |
1102 | int sta_id; | |
1103 | ||
1104 | sta_id = iwl_find_station(priv, addr); | |
1105 | if (sta_id == IWL_INVALID_STATION) | |
1106 | return -ENXIO; | |
1107 | ||
1108 | spin_lock_irqsave(&priv->sta_lock, flags); | |
1109 | priv->stations[sta_id].sta.station_flags_msk = 0; | |
1110 | priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_ADDBA_TID_MSK; | |
1111 | priv->stations[sta_id].sta.add_immediate_ba_tid = (u8)tid; | |
1112 | priv->stations[sta_id].sta.add_immediate_ba_ssn = cpu_to_le16(ssn); | |
1113 | priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; | |
1114 | spin_unlock_irqrestore(&priv->sta_lock, flags); | |
1115 | ||
1116 | return iwl_send_add_sta(priv, &priv->stations[sta_id].sta, | |
1117 | CMD_ASYNC); | |
1118 | } | |
1119 | EXPORT_SYMBOL(iwl_sta_rx_agg_start); | |
1120 | ||
1121 | int iwl_sta_rx_agg_stop(struct iwl_priv *priv, const u8 *addr, int tid) | |
1122 | { | |
1123 | unsigned long flags; | |
1124 | int sta_id; | |
1125 | ||
1126 | sta_id = iwl_find_station(priv, addr); | |
1127 | if (sta_id == IWL_INVALID_STATION) | |
1128 | return -ENXIO; | |
1129 | ||
1130 | spin_lock_irqsave(&priv->sta_lock, flags); | |
1131 | priv->stations[sta_id].sta.station_flags_msk = 0; | |
1132 | priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_DELBA_TID_MSK; | |
1133 | priv->stations[sta_id].sta.remove_immediate_ba_tid = (u8)tid; | |
1134 | priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; | |
1135 | spin_unlock_irqrestore(&priv->sta_lock, flags); | |
1136 | ||
1137 | return iwl_send_add_sta(priv, &priv->stations[sta_id].sta, | |
1138 | CMD_ASYNC); | |
1139 | } | |
1140 | EXPORT_SYMBOL(iwl_sta_rx_agg_stop); | |
1141 | ||
1142 | static void iwl_sta_modify_ps_wake(struct iwl_priv *priv, int sta_id) | |
1143 | { | |
1144 | unsigned long flags; | |
1145 | ||
1146 | spin_lock_irqsave(&priv->sta_lock, flags); | |
1147 | priv->stations[sta_id].sta.station_flags &= ~STA_FLG_PWR_SAVE_MSK; | |
1148 | priv->stations[sta_id].sta.station_flags_msk = STA_FLG_PWR_SAVE_MSK; | |
1149 | priv->stations[sta_id].sta.sta.modify_mask = 0; | |
1150 | priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; | |
1151 | spin_unlock_irqrestore(&priv->sta_lock, flags); | |
1152 | ||
1153 | iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC); | |
1154 | } | |
1155 | ||
1156 | void iwl_update_ps_mode(struct iwl_priv *priv, u16 ps_bit, u8 *addr) | |
1157 | { | |
1158 | /* FIXME: need locking over ps_status ??? */ | |
1159 | u8 sta_id = iwl_find_station(priv, addr); | |
1160 | ||
1161 | if (sta_id != IWL_INVALID_STATION) { | |
1162 | u8 sta_awake = priv->stations[sta_id]. | |
1163 | ps_status == STA_PS_STATUS_WAKE; | |
1164 | ||
1165 | if (sta_awake && ps_bit) | |
1166 | priv->stations[sta_id].ps_status = STA_PS_STATUS_SLEEP; | |
1167 | else if (!sta_awake && !ps_bit) { | |
1168 | iwl_sta_modify_ps_wake(priv, sta_id); | |
1169 | priv->stations[sta_id].ps_status = STA_PS_STATUS_WAKE; | |
1170 | } | |
1171 | } | |
1172 | } | |
5083e563 | 1173 |