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[net-next-2.6.git] / drivers / net / wireless / iwlwifi / iwl-sta.c
CommitLineData
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:
25 * James P. Ketrenos <ipw2100-admin@linux.intel.com>
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		 42u8 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}
72EXPORT_SYMBOL(iwl_find_station);
73
be1f3ab6
EG		 74int 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}
83EXPORT_SYMBOL(iwl_get_ra_sta_id);
84
24e5c401
EG		 85static 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		 101static 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;
24e5c401 105 u8 sta_id = cmd->cmd.addsta.sta.sta_id;
42132bce
TW		 106
107 if (!skb) {
108 IWL_ERROR("Error: Response NULL in REPLY_ADD_STA.\n");
109 return 1;
110 }
111
112 res = (struct iwl_rx_packet *)skb->data;
113 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
114 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
115 res->hdr.flags);
116 return 1;
117 }
118
119 switch (res->u.add_sta.status) {
120 case ADD_STA_SUCCESS_MSK:
24e5c401
EG		 121 iwl_sta_ucode_activate(priv, sta_id);
122 /* fall through */
42132bce
TW		 123 default:
124 IWL_DEBUG_HC("Received REPLY_ADD_STA:(0x%08X)\n",
125 res->u.add_sta.status);
126 break;
127 }
128
129 /* We didn't cache the SKB; let the caller free it */
130 return 1;
131}
132
133636de
TW		 133int iwl_send_add_sta(struct iwl_priv *priv,
134 struct iwl_addsta_cmd *sta, u8 flags)
135{
136 struct iwl_rx_packet *res = NULL;
137 int ret = 0;
138 u8 data[sizeof(*sta)];
139 struct iwl_host_cmd cmd = {
140 .id = REPLY_ADD_STA,
141 .meta.flags = flags,
142 .data = data,
143 };
144
42132bce
TW		 145 if (flags & CMD_ASYNC)
146 cmd.meta.u.callback = iwl_add_sta_callback;
147 else
133636de
TW		 148 cmd.meta.flags |= CMD_WANT_SKB;
149
150 cmd.len = priv->cfg->ops->utils->build_addsta_hcmd(sta, data);
151 ret = iwl_send_cmd(priv, &cmd);
152
153 if (ret || (flags & CMD_ASYNC))
154 return ret;
155
156 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
157 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
158 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
159 res->hdr.flags);
160 ret = -EIO;
161 }
162
163 if (ret == 0) {
164 switch (res->u.add_sta.status) {
165 case ADD_STA_SUCCESS_MSK:
24e5c401 166 iwl_sta_ucode_activate(priv, sta->sta.sta_id);
133636de
TW		 167 IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
168 break;
169 default:
170 ret = -EIO;
171 IWL_WARNING("REPLY_ADD_STA failed\n");
172 break;
173 }
174 }
175
176 priv->alloc_rxb_skb--;
177 dev_kfree_skb_any(cmd.meta.u.skb);
178
179 return ret;
180}
181EXPORT_SYMBOL(iwl_send_add_sta);
947b13a7 182
4f40e4d9
TW		 183static void iwl_set_ht_add_station(struct iwl_priv *priv, u8 index,
184 struct ieee80211_ht_info *sta_ht_inf)
185{
186 __le32 sta_flags;
187 u8 mimo_ps_mode;
188
189 if (!sta_ht_inf || !sta_ht_inf->ht_supported)
190 goto done;
191
00c5ae2f 192 mimo_ps_mode = (sta_ht_inf->cap & IEEE80211_HT_CAP_SM_PS) >> 2;
4f40e4d9
TW		 193
194 sta_flags = priv->stations[index].sta.station_flags;
195
196 sta_flags &= ~(STA_FLG_RTS_MIMO_PROT_MSK | STA_FLG_MIMO_DIS_MSK);
197
198 switch (mimo_ps_mode) {
00c5ae2f 199 case WLAN_HT_CAP_SM_PS_STATIC:
4f40e4d9
TW		 200 sta_flags |= STA_FLG_MIMO_DIS_MSK;
201 break;
00c5ae2f 202 case WLAN_HT_CAP_SM_PS_DYNAMIC:
4f40e4d9
TW		 203 sta_flags |= STA_FLG_RTS_MIMO_PROT_MSK;
204 break;
00c5ae2f 205 case WLAN_HT_CAP_SM_PS_DISABLED:
4f40e4d9
TW		 206 break;
207 default:
6f147926 208 IWL_WARNING("Invalid MIMO PS mode %d\n", mimo_ps_mode);
4f40e4d9
TW		 209 break;
210 }
211
212 sta_flags |= cpu_to_le32(
213 (u32)sta_ht_inf->ampdu_factor << STA_FLG_MAX_AGG_SIZE_POS);
214
215 sta_flags |= cpu_to_le32(
216 (u32)sta_ht_inf->ampdu_density << STA_FLG_AGG_MPDU_DENSITY_POS);
217
218 if (iwl_is_fat_tx_allowed(priv, sta_ht_inf))
219 sta_flags |= STA_FLG_FAT_EN_MSK;
220 else
221 sta_flags &= ~STA_FLG_FAT_EN_MSK;
222
223 priv->stations[index].sta.station_flags = sta_flags;
224 done:
225 return;
226}
4f40e4d9
TW		 227
228/**
229 * iwl_add_station_flags - Add station to tables in driver and device
230 */
231u8 iwl_add_station_flags(struct iwl_priv *priv, const u8 *addr, int is_ap,
232 u8 flags, struct ieee80211_ht_info *ht_info)
233{
234 int i;
24e5c401 235 int sta_id = IWL_INVALID_STATION;
4f40e4d9
TW		 236 struct iwl_station_entry *station;
237 unsigned long flags_spin;
4f40e4d9
TW		 238
239 spin_lock_irqsave(&priv->sta_lock, flags_spin);
240 if (is_ap)
24e5c401 241 sta_id = IWL_AP_ID;
4f40e4d9 242 else if (is_broadcast_ether_addr(addr))
24e5c401 243 sta_id = priv->hw_params.bcast_sta_id;
4f40e4d9
TW		 244 else
245 for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++) {
246 if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
247 addr)) {
24e5c401 248 sta_id = i;
4f40e4d9
TW		 249 break;
250 }
251
252 if (!priv->stations[i].used &&
24e5c401
EG		 253 sta_id == IWL_INVALID_STATION)
254 sta_id = i;
4f40e4d9
TW		 255 }
256
4f40e4d9 257 /* These two conditions have the same outcome, but keep them separate
24e5c401
EG		 258 since they have different meanings */
259 if (unlikely(sta_id == IWL_INVALID_STATION)) {
4f40e4d9 260 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
24e5c401 261 return sta_id;
4f40e4d9
TW		 262 }
263
24e5c401
EG		 264 if (priv->stations[sta_id].used &&
265 !compare_ether_addr(priv->stations[sta_id].sta.sta.addr, addr)) {
4f40e4d9 266 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
24e5c401 267 return sta_id;
4f40e4d9
TW		 268 }
269
270
24e5c401
EG		 271 station = &priv->stations[sta_id];
272 station->used = IWL_STA_DRIVER_ACTIVE;
e174961c
JB		 273 IWL_DEBUG_ASSOC("Add STA to driver ID %d: %pM\n",
274 sta_id, addr);
4f40e4d9
TW		 275 priv->num_stations++;
276
277 /* Set up the REPLY_ADD_STA command to send to device */
278 memset(&station->sta, 0, sizeof(struct iwl_addsta_cmd));
279 memcpy(station->sta.sta.addr, addr, ETH_ALEN);
280 station->sta.mode = 0;
24e5c401 281 station->sta.sta.sta_id = sta_id;
4f40e4d9
TW		 282 station->sta.station_flags = 0;
283
284 /* BCAST station and IBSS stations do not work in HT mode */
24e5c401 285 if (sta_id != priv->hw_params.bcast_sta_id &&
05c914fe 286 priv->iw_mode != NL80211_IFTYPE_ADHOC)
24e5c401 287 iwl_set_ht_add_station(priv, sta_id, ht_info);
4f40e4d9
TW		 288
289 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
290
291 /* Add station to device's station table */
292 iwl_send_add_sta(priv, &station->sta, flags);
24e5c401 293 return sta_id;
4f40e4d9
TW		 294
295}
296EXPORT_SYMBOL(iwl_add_station_flags);
297
24e5c401 298static void iwl_sta_ucode_deactivate(struct iwl_priv *priv, const char *addr)
7a999bf0
TW		 299{
300 unsigned long flags;
24e5c401
EG		 301 u8 sta_id = iwl_find_station(priv, addr);
302
303 BUG_ON(sta_id == IWL_INVALID_STATION);
304
e174961c 305 IWL_DEBUG_ASSOC("Removed STA from Ucode: %pM\n", addr);
24e5c401
EG		 306
307 spin_lock_irqsave(&priv->sta_lock, flags);
308
309 /* Ucode must be active and driver must be non active */
310 if (priv->stations[sta_id].used != IWL_STA_UCODE_ACTIVE)
311 IWL_ERROR("removed non active STA %d\n", sta_id);
312
313 priv->stations[sta_id].used &= ~IWL_STA_UCODE_ACTIVE;
314
315 memset(&priv->stations[sta_id], 0, sizeof(struct iwl_station_entry));
316 spin_unlock_irqrestore(&priv->sta_lock, flags);
7a999bf0
TW		 317}
318
319static int iwl_remove_sta_callback(struct iwl_priv *priv,
320 struct iwl_cmd *cmd, struct sk_buff *skb)
321{
322 struct iwl_rx_packet *res = NULL;
323 const char *addr = cmd->cmd.rm_sta.addr;
324
325 if (!skb) {
326 IWL_ERROR("Error: Response NULL in REPLY_REMOVE_STA.\n");
327 return 1;
328 }
329
330 res = (struct iwl_rx_packet *)skb->data;
331 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
332 IWL_ERROR("Bad return from REPLY_REMOVE_STA (0x%08X)\n",
333 res->hdr.flags);
334 return 1;
335 }
336
337 switch (res->u.rem_sta.status) {
338 case REM_STA_SUCCESS_MSK:
339 iwl_sta_ucode_deactivate(priv, addr);
340 break;
341 default:
24e5c401 342 IWL_ERROR("REPLY_REMOVE_STA failed\n");
7a999bf0
TW		 343 break;
344 }
345
346 /* We didn't cache the SKB; let the caller free it */
347 return 1;
348}
349
350static int iwl_send_remove_station(struct iwl_priv *priv, const u8 *addr,
351 u8 flags)
352{
353 struct iwl_rx_packet *res = NULL;
354 int ret;
355
356 struct iwl_rem_sta_cmd rm_sta_cmd;
357
358 struct iwl_host_cmd cmd = {
359 .id = REPLY_REMOVE_STA,
360 .len = sizeof(struct iwl_rem_sta_cmd),
361 .meta.flags = flags,
362 .data = &rm_sta_cmd,
363 };
364
365 memset(&rm_sta_cmd, 0, sizeof(rm_sta_cmd));
366 rm_sta_cmd.num_sta = 1;
367 memcpy(&rm_sta_cmd.addr, addr , ETH_ALEN);
368
369 if (flags & CMD_ASYNC)
370 cmd.meta.u.callback = iwl_remove_sta_callback;
371 else
372 cmd.meta.flags |= CMD_WANT_SKB;
373 ret = iwl_send_cmd(priv, &cmd);
374
375 if (ret || (flags & CMD_ASYNC))
376 return ret;
377
378 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
379 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
380 IWL_ERROR("Bad return from REPLY_REMOVE_STA (0x%08X)\n",
381 res->hdr.flags);
382 ret = -EIO;
383 }
384
385 if (!ret) {
386 switch (res->u.rem_sta.status) {
387 case REM_STA_SUCCESS_MSK:
388 iwl_sta_ucode_deactivate(priv, addr);
389 IWL_DEBUG_ASSOC("REPLY_REMOVE_STA PASSED\n");
390 break;
391 default:
392 ret = -EIO;
393 IWL_ERROR("REPLY_REMOVE_STA failed\n");
394 break;
395 }
396 }
397
398 priv->alloc_rxb_skb--;
399 dev_kfree_skb_any(cmd.meta.u.skb);
400
401 return ret;
402}
be1f3ab6 403
7a999bf0
TW		 404/**
405 * iwl_remove_station - Remove driver's knowledge of station.
7a999bf0 406 */
24e5c401 407int iwl_remove_station(struct iwl_priv *priv, const u8 *addr, int is_ap)
7a999bf0 408{
24e5c401
EG		 409 int sta_id = IWL_INVALID_STATION;
410 int i, ret = -EINVAL;
7a999bf0
TW		 411 unsigned long flags;
412
413 spin_lock_irqsave(&priv->sta_lock, flags);
414
415 if (is_ap)
24e5c401 416 sta_id = IWL_AP_ID;
7a999bf0 417 else if (is_broadcast_ether_addr(addr))
24e5c401 418 sta_id = priv->hw_params.bcast_sta_id;
7a999bf0
TW		 419 else
420 for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++)
421 if (priv->stations[i].used &&
422 !compare_ether_addr(priv->stations[i].sta.sta.addr,
423 addr)) {
24e5c401 424 sta_id = i;
7a999bf0
TW		 425 break;
426 }
427
24e5c401 428 if (unlikely(sta_id == IWL_INVALID_STATION))
7a999bf0
TW		 429 goto out;
430
e174961c
JB		 431 IWL_DEBUG_ASSOC("Removing STA from driver:%d %pM\n",
432 sta_id, addr);
24e5c401
EG		 433
434 if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE)) {
e174961c
JB		 435 IWL_ERROR("Removing %pM but non DRIVER active\n",
436 addr);
24e5c401
EG		 437 goto out;
438 }
439
440 if (!(priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE)) {
e174961c
JB		 441 IWL_ERROR("Removing %pM but non UCODE active\n",
442 addr);
24e5c401 443 goto out;
7a999bf0
TW		 444 }
445
24e5c401
EG		 446
447 priv->stations[sta_id].used &= ~IWL_STA_DRIVER_ACTIVE;
448
449 priv->num_stations--;
450
7a999bf0 451 BUG_ON(priv->num_stations < 0);
24e5c401 452
7a999bf0 453 spin_unlock_irqrestore(&priv->sta_lock, flags);
24e5c401
EG		 454
455 ret = iwl_send_remove_station(priv, addr, CMD_ASYNC);
456 return ret;
7a999bf0
TW		 457out:
458 spin_unlock_irqrestore(&priv->sta_lock, flags);
24e5c401 459 return ret;
7a999bf0
TW		 460}
461EXPORT_SYMBOL(iwl_remove_station);
24e5c401 462
be1f3ab6 463static int iwl_get_free_ucode_key_index(struct iwl_priv *priv)
80fb47a1
EG		 464{
465 int i;
466
467 for (i = 0; i < STA_KEY_MAX_NUM; i++)
77bab602 468 if (!test_and_set_bit(i, &priv->ucode_key_table))
80fb47a1
EG		 469 return i;
470
471 return -1;
472}
6974e363
EG		 473
474int iwl_send_static_wepkey_cmd(struct iwl_priv *priv, u8 send_if_empty)
475{
476 int i, not_empty = 0;
477 u8 buff[sizeof(struct iwl_wep_cmd) +
478 sizeof(struct iwl_wep_key) * WEP_KEYS_MAX];
479 struct iwl_wep_cmd *wep_cmd = (struct iwl_wep_cmd *)buff;
480 size_t cmd_size = sizeof(struct iwl_wep_cmd);
481 struct iwl_host_cmd cmd = {
482 .id = REPLY_WEPKEY,
483 .data = wep_cmd,
484 .meta.flags = CMD_ASYNC,
485 };
486
487 memset(wep_cmd, 0, cmd_size +
488 (sizeof(struct iwl_wep_key) * WEP_KEYS_MAX));
489
490 for (i = 0; i < WEP_KEYS_MAX ; i++) {
491 wep_cmd->key[i].key_index = i;
492 if (priv->wep_keys[i].key_size) {
493 wep_cmd->key[i].key_offset = i;
494 not_empty = 1;
495 } else {
496 wep_cmd->key[i].key_offset = WEP_INVALID_OFFSET;
497 }
498
499 wep_cmd->key[i].key_size = priv->wep_keys[i].key_size;
500 memcpy(&wep_cmd->key[i].key[3], priv->wep_keys[i].key,
501 priv->wep_keys[i].key_size);
502 }
503
504 wep_cmd->global_key_type = WEP_KEY_WEP_TYPE;
505 wep_cmd->num_keys = WEP_KEYS_MAX;
506
507 cmd_size += sizeof(struct iwl_wep_key) * WEP_KEYS_MAX;
508
509 cmd.len = cmd_size;
510
511 if (not_empty || send_if_empty)
512 return iwl_send_cmd(priv, &cmd);
513 else
514 return 0;
515}
27aaba0c 516EXPORT_SYMBOL(iwl_send_static_wepkey_cmd);
6974e363
EG		 517
518int iwl_remove_default_wep_key(struct iwl_priv *priv,
80fb47a1 519 struct ieee80211_key_conf *keyconf)
6974e363
EG		 520{
521 int ret;
522 unsigned long flags;
523
524 spin_lock_irqsave(&priv->sta_lock, flags);
80fb47a1
EG		 525
526 if (!test_and_clear_bit(keyconf->keyidx, &priv->ucode_key_table))
527 IWL_ERROR("index %d not used in uCode key table.\n",
528 keyconf->keyidx);
529
6974e363 530 priv->default_wep_key--;
80fb47a1 531 memset(&priv->wep_keys[keyconf->keyidx], 0, sizeof(priv->wep_keys[0]));
6974e363 532 ret = iwl_send_static_wepkey_cmd(priv, 1);
4564ce8b
EG		 533 IWL_DEBUG_WEP("Remove default WEP key: idx=%d ret=%d\n",
534 keyconf->keyidx, ret);
6974e363
EG		 535 spin_unlock_irqrestore(&priv->sta_lock, flags);
536
537 return ret;
538}
27aaba0c 539EXPORT_SYMBOL(iwl_remove_default_wep_key);
6974e363
EG		 540
541int iwl_set_default_wep_key(struct iwl_priv *priv,
542 struct ieee80211_key_conf *keyconf)
543{
544 int ret;
545 unsigned long flags;
546
4564ce8b
EG		 547 if (keyconf->keylen != WEP_KEY_LEN_128 &&
548 keyconf->keylen != WEP_KEY_LEN_64) {
549 IWL_DEBUG_WEP("Bad WEP key length %d\n", keyconf->keylen);
550 return -EINVAL;
551 }
552
6974e363 553 keyconf->flags &= ~IEEE80211_KEY_FLAG_GENERATE_IV;
ccc038ab 554 keyconf->hw_key_idx = HW_KEY_DEFAULT;
6974e363
EG		 555 priv->stations[IWL_AP_ID].keyinfo.alg = ALG_WEP;
556
557 spin_lock_irqsave(&priv->sta_lock, flags);
558 priv->default_wep_key++;
559
80fb47a1
EG		 560 if (test_and_set_bit(keyconf->keyidx, &priv->ucode_key_table))
561 IWL_ERROR("index %d already used in uCode key table.\n",
562 keyconf->keyidx);
563
6974e363
EG		 564 priv->wep_keys[keyconf->keyidx].key_size = keyconf->keylen;
565 memcpy(&priv->wep_keys[keyconf->keyidx].key, &keyconf->key,
566 keyconf->keylen);
567
568 ret = iwl_send_static_wepkey_cmd(priv, 0);
4564ce8b
EG		 569 IWL_DEBUG_WEP("Set default WEP key: len=%d idx=%d ret=%d\n",
570 keyconf->keylen, keyconf->keyidx, ret);
6974e363
EG		 571 spin_unlock_irqrestore(&priv->sta_lock, flags);
572
573 return ret;
574}
27aaba0c 575EXPORT_SYMBOL(iwl_set_default_wep_key);
6974e363 576
7480513f 577static int iwl_set_wep_dynamic_key_info(struct iwl_priv *priv,
0211ddda
EG		 578 struct ieee80211_key_conf *keyconf,
579 u8 sta_id)
580{
581 unsigned long flags;
582 __le16 key_flags = 0;
583 int ret;
584
585 keyconf->flags &= ~IEEE80211_KEY_FLAG_GENERATE_IV;
0211ddda
EG		 586
587 key_flags |= (STA_KEY_FLG_WEP | STA_KEY_FLG_MAP_KEY_MSK);
588 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
589 key_flags &= ~STA_KEY_FLG_INVALID;
590
591 if (keyconf->keylen == WEP_KEY_LEN_128)
592 key_flags |= STA_KEY_FLG_KEY_SIZE_MSK;
593
5425e490 594 if (sta_id == priv->hw_params.bcast_sta_id)
0211ddda
EG		 595 key_flags |= STA_KEY_MULTICAST_MSK;
596
597 spin_lock_irqsave(&priv->sta_lock, flags);
598
599 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
600 priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
601 priv->stations[sta_id].keyinfo.keyidx = keyconf->keyidx;
602
603 memcpy(priv->stations[sta_id].keyinfo.key,
604 keyconf->key, keyconf->keylen);
605
606 memcpy(&priv->stations[sta_id].sta.key.key[3],
607 keyconf->key, keyconf->keylen);
608
3ec47732
EG		 609 if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
610 == STA_KEY_FLG_NO_ENC)
611 priv->stations[sta_id].sta.key.key_offset =
80fb47a1 612 iwl_get_free_ucode_key_index(priv);
3ec47732
EG		 613 /* else, we are overriding an existing key => no need to allocated room
614 * in uCode. */
0211ddda 615
3ec47732 616 priv->stations[sta_id].sta.key.key_flags = key_flags;
0211ddda
EG		 617 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
618 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
619
133636de 620 ret = iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
0211ddda
EG		 621
622 spin_unlock_irqrestore(&priv->sta_lock, flags);
623
624 return ret;
625}
7480513f
EG		 626
627static int iwl_set_ccmp_dynamic_key_info(struct iwl_priv *priv,
628 struct ieee80211_key_conf *keyconf,
629 u8 sta_id)
630{
631 unsigned long flags;
632 __le16 key_flags = 0;
633
634 key_flags |= (STA_KEY_FLG_CCMP | STA_KEY_FLG_MAP_KEY_MSK);
635 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
636 key_flags &= ~STA_KEY_FLG_INVALID;
637
5425e490 638 if (sta_id == priv->hw_params.bcast_sta_id)
7480513f
EG		 639 key_flags |= STA_KEY_MULTICAST_MSK;
640
641 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
7480513f
EG		 642
643 spin_lock_irqsave(&priv->sta_lock, flags);
644 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
645 priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
646
647 memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
648 keyconf->keylen);
649
650 memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
651 keyconf->keylen);
652
3ec47732
EG		 653 if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
654 == STA_KEY_FLG_NO_ENC)
655 priv->stations[sta_id].sta.key.key_offset =
656 iwl_get_free_ucode_key_index(priv);
657 /* else, we are overriding an existing key => no need to allocated room
658 * in uCode. */
659
7480513f
EG		 660 priv->stations[sta_id].sta.key.key_flags = key_flags;
661 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
662 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
663
664 spin_unlock_irqrestore(&priv->sta_lock, flags);
665
666 IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n");
133636de 667 return iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
7480513f
EG		 668}
669
670static int iwl_set_tkip_dynamic_key_info(struct iwl_priv *priv,
671 struct ieee80211_key_conf *keyconf,
672 u8 sta_id)
673{
674 unsigned long flags;
675 int ret = 0;
676
677 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
678 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
7480513f
EG		 679
680 spin_lock_irqsave(&priv->sta_lock, flags);
681
682 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
7480513f 683 priv->stations[sta_id].keyinfo.keylen = 16;
3ec47732
EG		 684
685 if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
686 == STA_KEY_FLG_NO_ENC)
687 priv->stations[sta_id].sta.key.key_offset =
77bab602 688 iwl_get_free_ucode_key_index(priv);
3ec47732
EG		 689 /* else, we are overriding an existing key => no need to allocated room
690 * in uCode. */
7480513f
EG		 691
692 /* This copy is acutally not needed: we get the key with each TX */
693 memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key, 16);
694
695 memcpy(priv->stations[sta_id].sta.key.key, keyconf->key, 16);
696
697 spin_unlock_irqrestore(&priv->sta_lock, flags);
698
699 return ret;
700}
701
3ec47732
EG		 702int iwl_remove_dynamic_key(struct iwl_priv *priv,
703 struct ieee80211_key_conf *keyconf,
704 u8 sta_id)
7480513f
EG		 705{
706 unsigned long flags;
3ec47732
EG		 707 int ret = 0;
708 u16 key_flags;
709 u8 keyidx;
7480513f 710
ccc038ab 711 priv->key_mapping_key--;
7480513f
EG		 712
713 spin_lock_irqsave(&priv->sta_lock, flags);
3ec47732
EG		 714 key_flags = le16_to_cpu(priv->stations[sta_id].sta.key.key_flags);
715 keyidx = (key_flags >> STA_KEY_FLG_KEYID_POS) & 0x3;
716
4564ce8b
EG		 717 IWL_DEBUG_WEP("Remove dynamic key: idx=%d sta=%d\n",
718 keyconf->keyidx, sta_id);
719
3ec47732
EG		 720 if (keyconf->keyidx != keyidx) {
721 /* We need to remove a key with index different that the one
722 * in the uCode. This means that the key we need to remove has
723 * been replaced by another one with different index.
724 * Don't do anything and return ok
725 */
726 spin_unlock_irqrestore(&priv->sta_lock, flags);
727 return 0;
728 }
729
7480513f
EG		 730 if (!test_and_clear_bit(priv->stations[sta_id].sta.key.key_offset,
731 &priv->ucode_key_table))
732 IWL_ERROR("index %d not used in uCode key table.\n",
733 priv->stations[sta_id].sta.key.key_offset);
734 memset(&priv->stations[sta_id].keyinfo, 0,
6def9761 735 sizeof(struct iwl_hw_key));
7480513f
EG		 736 memset(&priv->stations[sta_id].sta.key, 0,
737 sizeof(struct iwl4965_keyinfo));
3ec47732
EG		 738 priv->stations[sta_id].sta.key.key_flags =
739 STA_KEY_FLG_NO_ENC | STA_KEY_FLG_INVALID;
740 priv->stations[sta_id].sta.key.key_offset = WEP_INVALID_OFFSET;
7480513f
EG		 741 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
742 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
7480513f 743
ccc038ab 744 ret = iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
3ec47732
EG		 745 spin_unlock_irqrestore(&priv->sta_lock, flags);
746 return ret;
7480513f 747}
27aaba0c 748EXPORT_SYMBOL(iwl_remove_dynamic_key);
7480513f
EG		 749
750int iwl_set_dynamic_key(struct iwl_priv *priv,
ccc038ab 751 struct ieee80211_key_conf *keyconf, u8 sta_id)
7480513f
EG		 752{
753 int ret;
754
ccc038ab
EG		 755 priv->key_mapping_key++;
756 keyconf->hw_key_idx = HW_KEY_DYNAMIC;
7480513f 757
ccc038ab 758 switch (keyconf->alg) {
7480513f 759 case ALG_CCMP:
ccc038ab 760 ret = iwl_set_ccmp_dynamic_key_info(priv, keyconf, sta_id);
7480513f
EG		 761 break;
762 case ALG_TKIP:
ccc038ab 763 ret = iwl_set_tkip_dynamic_key_info(priv, keyconf, sta_id);
7480513f
EG		 764 break;
765 case ALG_WEP:
ccc038ab 766 ret = iwl_set_wep_dynamic_key_info(priv, keyconf, sta_id);
7480513f
EG		 767 break;
768 default:
ccc038ab 769 IWL_ERROR("Unknown alg: %s alg = %d\n", __func__, keyconf->alg);
7480513f
EG		 770 ret = -EINVAL;
771 }
772
4564ce8b
EG		 773 IWL_DEBUG_WEP("Set dynamic key: alg= %d len=%d idx=%d sta=%d ret=%d\n",
774 keyconf->alg, keyconf->keylen, keyconf->keyidx,
775 sta_id, ret);
776
7480513f
EG		 777 return ret;
778}
27aaba0c 779EXPORT_SYMBOL(iwl_set_dynamic_key);
7480513f 780
66c73db7
TW		 781#ifdef CONFIG_IWLWIFI_DEBUG
782static void iwl_dump_lq_cmd(struct iwl_priv *priv,
783 struct iwl_link_quality_cmd *lq)
784{
785 int i;
786 IWL_DEBUG_RATE("lq station id 0x%x\n", lq->sta_id);
787 IWL_DEBUG_RATE("lq dta 0x%X 0x%X\n",
788 lq->general_params.single_stream_ant_msk,
789 lq->general_params.dual_stream_ant_msk);
790
791 for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++)
792 IWL_DEBUG_RATE("lq index %d 0x%X\n",
793 i, lq->rs_table[i].rate_n_flags);
794}
795#else
796static inline void iwl_dump_lq_cmd(struct iwl_priv *priv,
797 struct iwl_link_quality_cmd *lq)
798{
799}
800#endif
801
802int iwl_send_lq_cmd(struct iwl_priv *priv,
803 struct iwl_link_quality_cmd *lq, u8 flags)
804{
805 struct iwl_host_cmd cmd = {
806 .id = REPLY_TX_LINK_QUALITY_CMD,
807 .len = sizeof(struct iwl_link_quality_cmd),
808 .meta.flags = flags,
809 .data = lq,
810 };
811
812 if ((lq->sta_id == 0xFF) &&
05c914fe 813 (priv->iw_mode == NL80211_IFTYPE_ADHOC))
66c73db7
TW		 814 return -EINVAL;
815
816 if (lq->sta_id == 0xFF)
817 lq->sta_id = IWL_AP_ID;
818
3ac7f146 819 iwl_dump_lq_cmd(priv, lq);
66c73db7 820
36e1f16e 821 if (iwl_is_associated(priv) && priv->assoc_station_added)
66c73db7
TW		 822 return iwl_send_cmd(priv, &cmd);
823
824 return 0;
825}
826EXPORT_SYMBOL(iwl_send_lq_cmd);
827
4f40e4d9
TW		 828/**
829 * iwl_sta_init_lq - Initialize a station's hardware rate table
830 *
831 * The uCode's station table contains a table of fallback rates
832 * for automatic fallback during transmission.
833 *
834 * NOTE: This sets up a default set of values. These will be replaced later
e227ceac 835 * if the driver's iwl-agn-rs rate scaling algorithm is used, instead of
4f40e4d9
TW		 836 * rc80211_simple.
837 *
838 * NOTE: Run REPLY_ADD_STA command to set up station table entry, before
839 * calling this function (which runs REPLY_TX_LINK_QUALITY_CMD,
840 * which requires station table entry to exist).
841 */
842static void iwl_sta_init_lq(struct iwl_priv *priv, const u8 *addr, int is_ap)
843{
844 int i, r;
845 struct iwl_link_quality_cmd link_cmd = {
846 .reserved1 = 0,
847 };
848 u16 rate_flags;
849
850 /* Set up the rate scaling to start at selected rate, fall back
851 * all the way down to 1M in IEEE order, and then spin on 1M */
852 if (is_ap)
853 r = IWL_RATE_54M_INDEX;
854 else if (priv->band == IEEE80211_BAND_5GHZ)
855 r = IWL_RATE_6M_INDEX;
856 else
857 r = IWL_RATE_1M_INDEX;
858
859 for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) {
860 rate_flags = 0;
861 if (r >= IWL_FIRST_CCK_RATE && r <= IWL_LAST_CCK_RATE)
862 rate_flags |= RATE_MCS_CCK_MSK;
863
864 /* Use Tx antenna B only */
865 rate_flags |= RATE_MCS_ANT_B_MSK; /*FIXME:RS*/
866
867 link_cmd.rs_table[i].rate_n_flags =
e7d326ac 868 iwl_hw_set_rate_n_flags(iwl_rates[r].plcp, rate_flags);
4f40e4d9
TW		 869 r = iwl4965_get_prev_ieee_rate(r);
870 }
871
872 link_cmd.general_params.single_stream_ant_msk = 2;
873 link_cmd.general_params.dual_stream_ant_msk = 3;
874 link_cmd.agg_params.agg_dis_start_th = 3;
875 link_cmd.agg_params.agg_time_limit = cpu_to_le16(4000);
876
877 /* Update the rate scaling for control frame Tx to AP */
878 link_cmd.sta_id = is_ap ? IWL_AP_ID : priv->hw_params.bcast_sta_id;
879
880 iwl_send_cmd_pdu_async(priv, REPLY_TX_LINK_QUALITY_CMD,
881 sizeof(link_cmd), &link_cmd, NULL);
882}
24e5c401 883
4f40e4d9
TW		 884/**
885 * iwl_rxon_add_station - add station into station table.
886 *
887 * there is only one AP station with id= IWL_AP_ID
888 * NOTE: mutex must be held before calling this fnction
889 */
890int iwl_rxon_add_station(struct iwl_priv *priv, const u8 *addr, int is_ap)
891{
892 u8 sta_id;
893
894 /* Add station to device's station table */
4f40e4d9
TW		 895 struct ieee80211_conf *conf = &priv->hw->conf;
896 struct ieee80211_ht_info *cur_ht_config = &conf->ht_conf;
897
898 if ((is_ap) &&
899 (conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) &&
05c914fe 900 (priv->iw_mode == NL80211_IFTYPE_STATION))
4f40e4d9
TW		 901 sta_id = iwl_add_station_flags(priv, addr, is_ap,
902 0, cur_ht_config);
903 else
4f40e4d9
TW		 904 sta_id = iwl_add_station_flags(priv, addr, is_ap,
905 0, NULL);
906
907 /* Set up default rate scaling table in device's station table */
908 iwl_sta_init_lq(priv, addr, is_ap);
909
910 return sta_id;
911}
912EXPORT_SYMBOL(iwl_rxon_add_station);
913
4f40e4d9
TW		 914/**
915 * iwl_get_sta_id - Find station's index within station table
916 *
917 * If new IBSS station, create new entry in station table
918 */
919int iwl_get_sta_id(struct iwl_priv *priv, struct ieee80211_hdr *hdr)
920{
921 int sta_id;
922 u16 fc = le16_to_cpu(hdr->frame_control);
4f40e4d9
TW		 923
924 /* If this frame is broadcast or management, use broadcast station id */
925 if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
926 is_multicast_ether_addr(hdr->addr1))
927 return priv->hw_params.bcast_sta_id;
928
929 switch (priv->iw_mode) {
930
931 /* If we are a client station in a BSS network, use the special
932 * AP station entry (that's the only station we communicate with) */
05c914fe 933 case NL80211_IFTYPE_STATION:
4f40e4d9
TW		 934 return IWL_AP_ID;
935
936 /* If we are an AP, then find the station, or use BCAST */
05c914fe 937 case NL80211_IFTYPE_AP:
4f40e4d9
TW		 938 sta_id = iwl_find_station(priv, hdr->addr1);
939 if (sta_id != IWL_INVALID_STATION)
940 return sta_id;
941 return priv->hw_params.bcast_sta_id;
942
943 /* If this frame is going out to an IBSS network, find the station,
944 * or create a new station table entry */
05c914fe 945 case NL80211_IFTYPE_ADHOC:
4f40e4d9
TW		 946 sta_id = iwl_find_station(priv, hdr->addr1);
947 if (sta_id != IWL_INVALID_STATION)
948 return sta_id;
949
950 /* Create new station table entry */
951 sta_id = iwl_add_station_flags(priv, hdr->addr1,
952 0, CMD_ASYNC, NULL);
953
954 if (sta_id != IWL_INVALID_STATION)
955 return sta_id;
956
e174961c 957 IWL_DEBUG_DROP("Station %pM not in station map. "
4f40e4d9 958 "Defaulting to broadcast...\n",
e174961c 959 hdr->addr1);
4f40e4d9
TW		 960 iwl_print_hex_dump(priv, IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
961 return priv->hw_params.bcast_sta_id;
962
d10c4ec8
SG		 963 /* If we are in monitor mode, use BCAST. This is required for
964 * packet injection. */
05c914fe 965 case NL80211_IFTYPE_MONITOR:
d10c4ec8
SG		 966 return priv->hw_params.bcast_sta_id;
967
4f40e4d9 968 default:
6f147926 969 IWL_WARNING("Unknown mode of operation: %d\n", priv->iw_mode);
4f40e4d9
TW		 970 return priv->hw_params.bcast_sta_id;
971 }
972}
973EXPORT_SYMBOL(iwl_get_sta_id);
974
5083e563
TW		 975/**
976 * iwl_sta_modify_enable_tid_tx - Enable Tx for this TID in station table
977 */
978void iwl_sta_modify_enable_tid_tx(struct iwl_priv *priv, int sta_id, int tid)
979{
980 unsigned long flags;
981
982 /* Remove "disable" flag, to enable Tx for this TID */
983 spin_lock_irqsave(&priv->sta_lock, flags);
984 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_TID_DISABLE_TX;
985 priv->stations[sta_id].sta.tid_disable_tx &= cpu_to_le16(~(1 << tid));
986 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
987 spin_unlock_irqrestore(&priv->sta_lock, flags);
988
989 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
990}
991EXPORT_SYMBOL(iwl_sta_modify_enable_tid_tx);
992
Clone of davem's net-next-2.6 tree