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Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-sta.c')
-rw-r--r--drivers/net/wireless/iwlwifi/iwl-sta.c355
1 files changed, 355 insertions, 0 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-sta.c b/drivers/net/wireless/iwlwifi/iwl-sta.c
new file mode 100644
index 000000000000..e4fdfaa2b9b2
--- /dev/null
+++ b/drivers/net/wireless/iwlwifi/iwl-sta.c
@@ -0,0 +1,355 @@
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>
31
32#include "iwl-eeprom.h"
33#include "iwl-4965.h"
34#include "iwl-core.h"
35#include "iwl-sta.h"
36#include "iwl-io.h"
37#include "iwl-helpers.h"
38#include "iwl-4965.h"
39#include "iwl-sta.h"
40
41int iwl_get_free_ucode_key_index(struct iwl_priv *priv)
42{
43 int i;
44
45 for (i = 0; i < STA_KEY_MAX_NUM; i++)
46 if (!test_and_set_bit(i, &priv->ucode_key_table))
47 return i;
48
49 return -1;
50}
51
52int iwl_send_static_wepkey_cmd(struct iwl_priv *priv, u8 send_if_empty)
53{
54 int i, not_empty = 0;
55 u8 buff[sizeof(struct iwl_wep_cmd) +
56 sizeof(struct iwl_wep_key) * WEP_KEYS_MAX];
57 struct iwl_wep_cmd *wep_cmd = (struct iwl_wep_cmd *)buff;
58 size_t cmd_size = sizeof(struct iwl_wep_cmd);
59 struct iwl_host_cmd cmd = {
60 .id = REPLY_WEPKEY,
61 .data = wep_cmd,
62 .meta.flags = CMD_ASYNC,
63 };
64
65 memset(wep_cmd, 0, cmd_size +
66 (sizeof(struct iwl_wep_key) * WEP_KEYS_MAX));
67
68 for (i = 0; i < WEP_KEYS_MAX ; i++) {
69 wep_cmd->key[i].key_index = i;
70 if (priv->wep_keys[i].key_size) {
71 wep_cmd->key[i].key_offset = i;
72 not_empty = 1;
73 } else {
74 wep_cmd->key[i].key_offset = WEP_INVALID_OFFSET;
75 }
76
77 wep_cmd->key[i].key_size = priv->wep_keys[i].key_size;
78 memcpy(&wep_cmd->key[i].key[3], priv->wep_keys[i].key,
79 priv->wep_keys[i].key_size);
80 }
81
82 wep_cmd->global_key_type = WEP_KEY_WEP_TYPE;
83 wep_cmd->num_keys = WEP_KEYS_MAX;
84
85 cmd_size += sizeof(struct iwl_wep_key) * WEP_KEYS_MAX;
86
87 cmd.len = cmd_size;
88
89 if (not_empty || send_if_empty)
90 return iwl_send_cmd(priv, &cmd);
91 else
92 return 0;
93}
94
95int iwl_remove_default_wep_key(struct iwl_priv *priv,
96 struct ieee80211_key_conf *keyconf)
97{
98 int ret;
99 unsigned long flags;
100
101 spin_lock_irqsave(&priv->sta_lock, flags);
102
103 if (!test_and_clear_bit(keyconf->keyidx, &priv->ucode_key_table))
104 IWL_ERROR("index %d not used in uCode key table.\n",
105 keyconf->keyidx);
106
107 priv->default_wep_key--;
108 memset(&priv->wep_keys[keyconf->keyidx], 0, sizeof(priv->wep_keys[0]));
109 ret = iwl_send_static_wepkey_cmd(priv, 1);
110 spin_unlock_irqrestore(&priv->sta_lock, flags);
111
112 return ret;
113}
114
115int iwl_set_default_wep_key(struct iwl_priv *priv,
116 struct ieee80211_key_conf *keyconf)
117{
118 int ret;
119 unsigned long flags;
120
121 keyconf->flags &= ~IEEE80211_KEY_FLAG_GENERATE_IV;
122 keyconf->hw_key_idx = keyconf->keyidx;
123 priv->stations[IWL_AP_ID].keyinfo.alg = ALG_WEP;
124
125 spin_lock_irqsave(&priv->sta_lock, flags);
126 priv->default_wep_key++;
127
128 if (test_and_set_bit(keyconf->keyidx, &priv->ucode_key_table))
129 IWL_ERROR("index %d already used in uCode key table.\n",
130 keyconf->keyidx);
131
132 priv->wep_keys[keyconf->keyidx].key_size = keyconf->keylen;
133 memcpy(&priv->wep_keys[keyconf->keyidx].key, &keyconf->key,
134 keyconf->keylen);
135
136 ret = iwl_send_static_wepkey_cmd(priv, 0);
137 spin_unlock_irqrestore(&priv->sta_lock, flags);
138
139 return ret;
140}
141
142static int iwl_set_wep_dynamic_key_info(struct iwl_priv *priv,
143 struct ieee80211_key_conf *keyconf,
144 u8 sta_id)
145{
146 unsigned long flags;
147 __le16 key_flags = 0;
148 int ret;
149
150 keyconf->flags &= ~IEEE80211_KEY_FLAG_GENERATE_IV;
151 keyconf->hw_key_idx = keyconf->keyidx;
152
153 key_flags |= (STA_KEY_FLG_WEP | STA_KEY_FLG_MAP_KEY_MSK);
154 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
155 key_flags &= ~STA_KEY_FLG_INVALID;
156
157 if (keyconf->keylen == WEP_KEY_LEN_128)
158 key_flags |= STA_KEY_FLG_KEY_SIZE_MSK;
159
160 if (sta_id == priv->hw_params.bcast_sta_id)
161 key_flags |= STA_KEY_MULTICAST_MSK;
162
163 spin_lock_irqsave(&priv->sta_lock, flags);
164
165 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
166 priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
167 priv->stations[sta_id].keyinfo.keyidx = keyconf->keyidx;
168
169 memcpy(priv->stations[sta_id].keyinfo.key,
170 keyconf->key, keyconf->keylen);
171
172 memcpy(&priv->stations[sta_id].sta.key.key[3],
173 keyconf->key, keyconf->keylen);
174
175 priv->stations[sta_id].sta.key.key_offset =
176 iwl_get_free_ucode_key_index(priv);
177 priv->stations[sta_id].sta.key.key_flags = key_flags;
178
179 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
180 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
181
182 ret = iwl4965_send_add_station(priv,
183 &priv->stations[sta_id].sta, CMD_ASYNC);
184
185 spin_unlock_irqrestore(&priv->sta_lock, flags);
186
187 return ret;
188}
189
190static int iwl_set_ccmp_dynamic_key_info(struct iwl_priv *priv,
191 struct ieee80211_key_conf *keyconf,
192 u8 sta_id)
193{
194 unsigned long flags;
195 __le16 key_flags = 0;
196
197 key_flags |= (STA_KEY_FLG_CCMP | STA_KEY_FLG_MAP_KEY_MSK);
198 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
199 key_flags &= ~STA_KEY_FLG_INVALID;
200
201 if (sta_id == priv->hw_params.bcast_sta_id)
202 key_flags |= STA_KEY_MULTICAST_MSK;
203
204 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
205 keyconf->hw_key_idx = keyconf->keyidx;
206
207 spin_lock_irqsave(&priv->sta_lock, flags);
208 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
209 priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
210
211 memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
212 keyconf->keylen);
213
214 memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
215 keyconf->keylen);
216
217 priv->stations[sta_id].sta.key.key_offset =
218 iwl_get_free_ucode_key_index(priv);
219 priv->stations[sta_id].sta.key.key_flags = key_flags;
220 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
221 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
222
223 spin_unlock_irqrestore(&priv->sta_lock, flags);
224
225 IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n");
226 return iwl4965_send_add_station(priv,
227 &priv->stations[sta_id].sta, CMD_ASYNC);
228}
229
230static int iwl_set_tkip_dynamic_key_info(struct iwl_priv *priv,
231 struct ieee80211_key_conf *keyconf,
232 u8 sta_id)
233{
234 unsigned long flags;
235 int ret = 0;
236
237 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
238 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
239 keyconf->hw_key_idx = keyconf->keyidx;
240
241 spin_lock_irqsave(&priv->sta_lock, flags);
242
243 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
244 priv->stations[sta_id].keyinfo.conf = keyconf;
245 priv->stations[sta_id].keyinfo.keylen = 16;
246 priv->stations[sta_id].sta.key.key_offset =
247 iwl_get_free_ucode_key_index(priv);
248
249 /* This copy is acutally not needed: we get the key with each TX */
250 memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key, 16);
251
252 memcpy(priv->stations[sta_id].sta.key.key, keyconf->key, 16);
253
254 spin_unlock_irqrestore(&priv->sta_lock, flags);
255
256 return ret;
257}
258
259int iwl_remove_dynamic_key(struct iwl_priv *priv, u8 sta_id)
260{
261 unsigned long flags;
262
263 priv->key_mapping_key = 0;
264
265 spin_lock_irqsave(&priv->sta_lock, flags);
266 if (!test_and_clear_bit(priv->stations[sta_id].sta.key.key_offset,
267 &priv->ucode_key_table))
268 IWL_ERROR("index %d not used in uCode key table.\n",
269 priv->stations[sta_id].sta.key.key_offset);
270 memset(&priv->stations[sta_id].keyinfo, 0,
271 sizeof(struct iwl4965_hw_key));
272 memset(&priv->stations[sta_id].sta.key, 0,
273 sizeof(struct iwl4965_keyinfo));
274 priv->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
275 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
276 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
277 spin_unlock_irqrestore(&priv->sta_lock, flags);
278
279 IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n");
280 return iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, 0);
281}
282
283int iwl_set_dynamic_key(struct iwl_priv *priv,
284 struct ieee80211_key_conf *key, u8 sta_id)
285{
286 int ret;
287
288 priv->key_mapping_key = 1;
289
290 switch (key->alg) {
291 case ALG_CCMP:
292 ret = iwl_set_ccmp_dynamic_key_info(priv, key, sta_id);
293 break;
294 case ALG_TKIP:
295 ret = iwl_set_tkip_dynamic_key_info(priv, key, sta_id);
296 break;
297 case ALG_WEP:
298 ret = iwl_set_wep_dynamic_key_info(priv, key, sta_id);
299 break;
300 default:
301 IWL_ERROR("Unknown alg: %s alg = %d\n", __func__, key->alg);
302 ret = -EINVAL;
303 }
304
305 return ret;
306}
307
308#ifdef CONFIG_IWLWIFI_DEBUG
309static void iwl_dump_lq_cmd(struct iwl_priv *priv,
310 struct iwl_link_quality_cmd *lq)
311{
312 int i;
313 IWL_DEBUG_RATE("lq station id 0x%x\n", lq->sta_id);
314 IWL_DEBUG_RATE("lq dta 0x%X 0x%X\n",
315 lq->general_params.single_stream_ant_msk,
316 lq->general_params.dual_stream_ant_msk);
317
318 for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++)
319 IWL_DEBUG_RATE("lq index %d 0x%X\n",
320 i, lq->rs_table[i].rate_n_flags);
321}
322#else
323static inline void iwl_dump_lq_cmd(struct iwl_priv *priv,
324 struct iwl_link_quality_cmd *lq)
325{
326}
327#endif
328
329int iwl_send_lq_cmd(struct iwl_priv *priv,
330 struct iwl_link_quality_cmd *lq, u8 flags)
331{
332 struct iwl_host_cmd cmd = {
333 .id = REPLY_TX_LINK_QUALITY_CMD,
334 .len = sizeof(struct iwl_link_quality_cmd),
335 .meta.flags = flags,
336 .data = lq,
337 };
338
339 if ((lq->sta_id == 0xFF) &&
340 (priv->iw_mode == IEEE80211_IF_TYPE_IBSS))
341 return -EINVAL;
342
343 if (lq->sta_id == 0xFF)
344 lq->sta_id = IWL_AP_ID;
345
346 iwl_dump_lq_cmd(priv,lq);
347
348 if (iwl_is_associated(priv) && priv->assoc_station_added &&
349 priv->lq_mngr.lq_ready)
350 return iwl_send_cmd(priv, &cmd);
351
352 return 0;
353}
354EXPORT_SYMBOL(iwl_send_lq_cmd);
355
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