projects / deliverable / linux.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
iwlwifi: move NIC init and Tx queues init to iwlcore
[deliverable/linux.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
EG		 32
33#include "iwl-eeprom.h"
3e0d4cb1 34#include "iwl-dev.h"
6974e363
EG		 35#include "iwl-core.h"
36#include "iwl-sta.h"
37#include "iwl-io.h"
38#include "iwl-helpers.h"
80fb47a1 39
947b13a7
TW		 40u8 iwl_find_station(struct iwl_priv *priv, const u8 *addr)
41{
42 int i;
43 int start = 0;
44 int ret = IWL_INVALID_STATION;
45 unsigned long flags;
46 DECLARE_MAC_BUF(mac);
47
48 if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) ||
49 (priv->iw_mode == IEEE80211_IF_TYPE_AP))
50 start = IWL_STA_ID;
51
52 if (is_broadcast_ether_addr(addr))
53 return priv->hw_params.bcast_sta_id;
54
55 spin_lock_irqsave(&priv->sta_lock, flags);
56 for (i = start; i < priv->hw_params.max_stations; i++)
57 if (priv->stations[i].used &&
58 (!compare_ether_addr(priv->stations[i].sta.sta.addr,
59 addr))) {
60 ret = i;
61 goto out;
62 }
63
64 IWL_DEBUG_ASSOC_LIMIT("can not find STA %s total %d\n",
65 print_mac(mac, addr), priv->num_stations);
66
67 out:
68 spin_unlock_irqrestore(&priv->sta_lock, flags);
69 return ret;
70}
71EXPORT_SYMBOL(iwl_find_station);
72
133636de
TW		 73int iwl_send_add_sta(struct iwl_priv *priv,
74 struct iwl_addsta_cmd *sta, u8 flags)
75{
76 struct iwl_rx_packet *res = NULL;
77 int ret = 0;
78 u8 data[sizeof(*sta)];
79 struct iwl_host_cmd cmd = {
80 .id = REPLY_ADD_STA,
81 .meta.flags = flags,
82 .data = data,
83 };
84
85 if (!(flags & CMD_ASYNC))
86 cmd.meta.flags |= CMD_WANT_SKB;
87
88 cmd.len = priv->cfg->ops->utils->build_addsta_hcmd(sta, data);
89 ret = iwl_send_cmd(priv, &cmd);
90
91 if (ret || (flags & CMD_ASYNC))
92 return ret;
93
94 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
95 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
96 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
97 res->hdr.flags);
98 ret = -EIO;
99 }
100
101 if (ret == 0) {
102 switch (res->u.add_sta.status) {
103 case ADD_STA_SUCCESS_MSK:
104 IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
105 break;
106 default:
107 ret = -EIO;
108 IWL_WARNING("REPLY_ADD_STA failed\n");
109 break;
110 }
111 }
112
113 priv->alloc_rxb_skb--;
114 dev_kfree_skb_any(cmd.meta.u.skb);
115
116 return ret;
117}
118EXPORT_SYMBOL(iwl_send_add_sta);
947b13a7 119
80fb47a1
EG		 120int iwl_get_free_ucode_key_index(struct iwl_priv *priv)
121{
122 int i;
123
124 for (i = 0; i < STA_KEY_MAX_NUM; i++)
77bab602 125 if (!test_and_set_bit(i, &priv->ucode_key_table))
80fb47a1
EG		 126 return i;
127
128 return -1;
129}
6974e363
EG		 130
131int iwl_send_static_wepkey_cmd(struct iwl_priv *priv, u8 send_if_empty)
132{
133 int i, not_empty = 0;
134 u8 buff[sizeof(struct iwl_wep_cmd) +
135 sizeof(struct iwl_wep_key) * WEP_KEYS_MAX];
136 struct iwl_wep_cmd *wep_cmd = (struct iwl_wep_cmd *)buff;
137 size_t cmd_size = sizeof(struct iwl_wep_cmd);
138 struct iwl_host_cmd cmd = {
139 .id = REPLY_WEPKEY,
140 .data = wep_cmd,
141 .meta.flags = CMD_ASYNC,
142 };
143
144 memset(wep_cmd, 0, cmd_size +
145 (sizeof(struct iwl_wep_key) * WEP_KEYS_MAX));
146
147 for (i = 0; i < WEP_KEYS_MAX ; i++) {
148 wep_cmd->key[i].key_index = i;
149 if (priv->wep_keys[i].key_size) {
150 wep_cmd->key[i].key_offset = i;
151 not_empty = 1;
152 } else {
153 wep_cmd->key[i].key_offset = WEP_INVALID_OFFSET;
154 }
155
156 wep_cmd->key[i].key_size = priv->wep_keys[i].key_size;
157 memcpy(&wep_cmd->key[i].key[3], priv->wep_keys[i].key,
158 priv->wep_keys[i].key_size);
159 }
160
161 wep_cmd->global_key_type = WEP_KEY_WEP_TYPE;
162 wep_cmd->num_keys = WEP_KEYS_MAX;
163
164 cmd_size += sizeof(struct iwl_wep_key) * WEP_KEYS_MAX;
165
166 cmd.len = cmd_size;
167
168 if (not_empty || send_if_empty)
169 return iwl_send_cmd(priv, &cmd);
170 else
171 return 0;
172}
173
174int iwl_remove_default_wep_key(struct iwl_priv *priv,
80fb47a1 175 struct ieee80211_key_conf *keyconf)
6974e363
EG		 176{
177 int ret;
178 unsigned long flags;
179
180 spin_lock_irqsave(&priv->sta_lock, flags);
80fb47a1
EG		 181
182 if (!test_and_clear_bit(keyconf->keyidx, &priv->ucode_key_table))
183 IWL_ERROR("index %d not used in uCode key table.\n",
184 keyconf->keyidx);
185
6974e363 186 priv->default_wep_key--;
80fb47a1 187 memset(&priv->wep_keys[keyconf->keyidx], 0, sizeof(priv->wep_keys[0]));
6974e363
EG		 188 ret = iwl_send_static_wepkey_cmd(priv, 1);
189 spin_unlock_irqrestore(&priv->sta_lock, flags);
190
191 return ret;
192}
193
194int iwl_set_default_wep_key(struct iwl_priv *priv,
195 struct ieee80211_key_conf *keyconf)
196{
197 int ret;
198 unsigned long flags;
199
200 keyconf->flags &= ~IEEE80211_KEY_FLAG_GENERATE_IV;
201 keyconf->hw_key_idx = keyconf->keyidx;
202 priv->stations[IWL_AP_ID].keyinfo.alg = ALG_WEP;
203
204 spin_lock_irqsave(&priv->sta_lock, flags);
205 priv->default_wep_key++;
206
80fb47a1
EG		 207 if (test_and_set_bit(keyconf->keyidx, &priv->ucode_key_table))
208 IWL_ERROR("index %d already used in uCode key table.\n",
209 keyconf->keyidx);
210
6974e363
EG		 211 priv->wep_keys[keyconf->keyidx].key_size = keyconf->keylen;
212 memcpy(&priv->wep_keys[keyconf->keyidx].key, &keyconf->key,
213 keyconf->keylen);
214
215 ret = iwl_send_static_wepkey_cmd(priv, 0);
216 spin_unlock_irqrestore(&priv->sta_lock, flags);
217
218 return ret;
219}
220
7480513f 221static int iwl_set_wep_dynamic_key_info(struct iwl_priv *priv,
0211ddda
EG		 222 struct ieee80211_key_conf *keyconf,
223 u8 sta_id)
224{
225 unsigned long flags;
226 __le16 key_flags = 0;
227 int ret;
228
229 keyconf->flags &= ~IEEE80211_KEY_FLAG_GENERATE_IV;
230 keyconf->hw_key_idx = keyconf->keyidx;
231
232 key_flags |= (STA_KEY_FLG_WEP | STA_KEY_FLG_MAP_KEY_MSK);
233 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
234 key_flags &= ~STA_KEY_FLG_INVALID;
235
236 if (keyconf->keylen == WEP_KEY_LEN_128)
237 key_flags |= STA_KEY_FLG_KEY_SIZE_MSK;
238
5425e490 239 if (sta_id == priv->hw_params.bcast_sta_id)
0211ddda
EG		 240 key_flags |= STA_KEY_MULTICAST_MSK;
241
242 spin_lock_irqsave(&priv->sta_lock, flags);
243
244 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
245 priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
246 priv->stations[sta_id].keyinfo.keyidx = keyconf->keyidx;
247
248 memcpy(priv->stations[sta_id].keyinfo.key,
249 keyconf->key, keyconf->keylen);
250
251 memcpy(&priv->stations[sta_id].sta.key.key[3],
252 keyconf->key, keyconf->keylen);
253
3ec47732
EG		 254 if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
255 == STA_KEY_FLG_NO_ENC)
256 priv->stations[sta_id].sta.key.key_offset =
80fb47a1 257 iwl_get_free_ucode_key_index(priv);
3ec47732
EG		 258 /* else, we are overriding an existing key => no need to allocated room
259 * in uCode. */
0211ddda 260
3ec47732 261 priv->stations[sta_id].sta.key.key_flags = key_flags;
0211ddda
EG		 262 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
263 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
264
133636de 265 ret = iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
0211ddda
EG		 266
267 spin_unlock_irqrestore(&priv->sta_lock, flags);
268
269 return ret;
270}
7480513f
EG		 271
272static int iwl_set_ccmp_dynamic_key_info(struct iwl_priv *priv,
273 struct ieee80211_key_conf *keyconf,
274 u8 sta_id)
275{
276 unsigned long flags;
277 __le16 key_flags = 0;
278
279 key_flags |= (STA_KEY_FLG_CCMP | STA_KEY_FLG_MAP_KEY_MSK);
280 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
281 key_flags &= ~STA_KEY_FLG_INVALID;
282
5425e490 283 if (sta_id == priv->hw_params.bcast_sta_id)
7480513f
EG		 284 key_flags |= STA_KEY_MULTICAST_MSK;
285
286 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
287 keyconf->hw_key_idx = keyconf->keyidx;
288
289 spin_lock_irqsave(&priv->sta_lock, flags);
290 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
291 priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
292
293 memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
294 keyconf->keylen);
295
296 memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
297 keyconf->keylen);
298
3ec47732
EG		 299 if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
300 == STA_KEY_FLG_NO_ENC)
301 priv->stations[sta_id].sta.key.key_offset =
302 iwl_get_free_ucode_key_index(priv);
303 /* else, we are overriding an existing key => no need to allocated room
304 * in uCode. */
305
7480513f
EG		 306 priv->stations[sta_id].sta.key.key_flags = key_flags;
307 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
308 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
309
310 spin_unlock_irqrestore(&priv->sta_lock, flags);
311
312 IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n");
133636de 313 return iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
7480513f
EG		 314}
315
316static int iwl_set_tkip_dynamic_key_info(struct iwl_priv *priv,
317 struct ieee80211_key_conf *keyconf,
318 u8 sta_id)
319{
320 unsigned long flags;
321 int ret = 0;
322
323 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
324 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
325 keyconf->hw_key_idx = keyconf->keyidx;
326
327 spin_lock_irqsave(&priv->sta_lock, flags);
328
329 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
330 priv->stations[sta_id].keyinfo.conf = keyconf;
331 priv->stations[sta_id].keyinfo.keylen = 16;
3ec47732
EG		 332
333 if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
334 == STA_KEY_FLG_NO_ENC)
335 priv->stations[sta_id].sta.key.key_offset =
77bab602 336 iwl_get_free_ucode_key_index(priv);
3ec47732
EG		 337 /* else, we are overriding an existing key => no need to allocated room
338 * in uCode. */
7480513f
EG		 339
340 /* This copy is acutally not needed: we get the key with each TX */
341 memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key, 16);
342
343 memcpy(priv->stations[sta_id].sta.key.key, keyconf->key, 16);
344
345 spin_unlock_irqrestore(&priv->sta_lock, flags);
346
347 return ret;
348}
349
3ec47732
EG		 350int iwl_remove_dynamic_key(struct iwl_priv *priv,
351 struct ieee80211_key_conf *keyconf,
352 u8 sta_id)
7480513f
EG		 353{
354 unsigned long flags;
3ec47732
EG		 355 int ret = 0;
356 u16 key_flags;
357 u8 keyidx;
7480513f
EG		 358
359 priv->key_mapping_key = 0;
360
361 spin_lock_irqsave(&priv->sta_lock, flags);
3ec47732
EG		 362 key_flags = le16_to_cpu(priv->stations[sta_id].sta.key.key_flags);
363 keyidx = (key_flags >> STA_KEY_FLG_KEYID_POS) & 0x3;
364
365 if (keyconf->keyidx != keyidx) {
366 /* We need to remove a key with index different that the one
367 * in the uCode. This means that the key we need to remove has
368 * been replaced by another one with different index.
369 * Don't do anything and return ok
370 */
371 spin_unlock_irqrestore(&priv->sta_lock, flags);
372 return 0;
373 }
374
7480513f
EG		 375 if (!test_and_clear_bit(priv->stations[sta_id].sta.key.key_offset,
376 &priv->ucode_key_table))
377 IWL_ERROR("index %d not used in uCode key table.\n",
378 priv->stations[sta_id].sta.key.key_offset);
379 memset(&priv->stations[sta_id].keyinfo, 0,
6def9761 380 sizeof(struct iwl_hw_key));
7480513f
EG		 381 memset(&priv->stations[sta_id].sta.key, 0,
382 sizeof(struct iwl4965_keyinfo));
3ec47732
EG		 383 priv->stations[sta_id].sta.key.key_flags =
384 STA_KEY_FLG_NO_ENC | STA_KEY_FLG_INVALID;
385 priv->stations[sta_id].sta.key.key_offset = WEP_INVALID_OFFSET;
7480513f
EG		 386 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
387 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
7480513f
EG		 388
389 IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n");
133636de 390 ret = iwl_send_add_sta(priv, &priv->stations[sta_id].sta, 0);
3ec47732
EG		 391 spin_unlock_irqrestore(&priv->sta_lock, flags);
392 return ret;
7480513f
EG		 393}
394
395int iwl_set_dynamic_key(struct iwl_priv *priv,
396 struct ieee80211_key_conf *key, u8 sta_id)
397{
398 int ret;
399
400 priv->key_mapping_key = 1;
401
402 switch (key->alg) {
403 case ALG_CCMP:
404 ret = iwl_set_ccmp_dynamic_key_info(priv, key, sta_id);
405 break;
406 case ALG_TKIP:
407 ret = iwl_set_tkip_dynamic_key_info(priv, key, sta_id);
408 break;
409 case ALG_WEP:
410 ret = iwl_set_wep_dynamic_key_info(priv, key, sta_id);
411 break;
412 default:
413 IWL_ERROR("Unknown alg: %s alg = %d\n", __func__, key->alg);
414 ret = -EINVAL;
415 }
416
417 return ret;
418}
419
66c73db7
TW		 420#ifdef CONFIG_IWLWIFI_DEBUG
421static void iwl_dump_lq_cmd(struct iwl_priv *priv,
422 struct iwl_link_quality_cmd *lq)
423{
424 int i;
425 IWL_DEBUG_RATE("lq station id 0x%x\n", lq->sta_id);
426 IWL_DEBUG_RATE("lq dta 0x%X 0x%X\n",
427 lq->general_params.single_stream_ant_msk,
428 lq->general_params.dual_stream_ant_msk);
429
430 for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++)
431 IWL_DEBUG_RATE("lq index %d 0x%X\n",
432 i, lq->rs_table[i].rate_n_flags);
433}
434#else
435static inline void iwl_dump_lq_cmd(struct iwl_priv *priv,
436 struct iwl_link_quality_cmd *lq)
437{
438}
439#endif
440
441int iwl_send_lq_cmd(struct iwl_priv *priv,
442 struct iwl_link_quality_cmd *lq, u8 flags)
443{
444 struct iwl_host_cmd cmd = {
445 .id = REPLY_TX_LINK_QUALITY_CMD,
446 .len = sizeof(struct iwl_link_quality_cmd),
447 .meta.flags = flags,
448 .data = lq,
449 };
450
451 if ((lq->sta_id == 0xFF) &&
452 (priv->iw_mode == IEEE80211_IF_TYPE_IBSS))
453 return -EINVAL;
454
455 if (lq->sta_id == 0xFF)
456 lq->sta_id = IWL_AP_ID;
457
458 iwl_dump_lq_cmd(priv,lq);
459
460 if (iwl_is_associated(priv) && priv->assoc_station_added &&
461 priv->lq_mngr.lq_ready)
462 return iwl_send_cmd(priv, &cmd);
463
464 return 0;
465}
466EXPORT_SYMBOL(iwl_send_lq_cmd);
467
Linux kernel - Deliverables
This page took 0.08411 seconds and 5 git commands to generate.