1 /******************************************************************************
3 * Copyright(c) 2003 - 2008 Intel Corporation. All rights reserved.
5 * Portions of this file are derived from the ipw3945 project, as well
6 * as portions of the ieee80211 subsystem header files.
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.
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
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
21 * The full GNU General Public License is included in this distribution in the
22 * file called LICENSE.
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
28 *****************************************************************************/
30 #include <net/mac80211.h>
32 #include "iwl-eeprom.h"
37 #include "iwl-helpers.h"
41 int iwl_get_free_ucode_key_index(struct iwl_priv *priv)
45 for (i = 0; i < STA_KEY_MAX_NUM; i++)
46 if (!test_and_set_bit(i, &priv->ucode_key_table))
52 int iwl_send_static_wepkey_cmd(struct iwl_priv *priv, u8 send_if_empty)
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 = {
62 .meta.flags = CMD_ASYNC,
65 memset(wep_cmd, 0, cmd_size +
66 (sizeof(struct iwl_wep_key) * WEP_KEYS_MAX));
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;
74 wep_cmd->key[i].key_offset = WEP_INVALID_OFFSET;
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);
82 wep_cmd->global_key_type = WEP_KEY_WEP_TYPE;
83 wep_cmd->num_keys = WEP_KEYS_MAX;
85 cmd_size += sizeof(struct iwl_wep_key) * WEP_KEYS_MAX;
89 if (not_empty || send_if_empty)
90 return iwl_send_cmd(priv, &cmd);
95 int iwl_remove_default_wep_key(struct iwl_priv *priv,
96 struct ieee80211_key_conf *keyconf)
101 spin_lock_irqsave(&priv->sta_lock, flags);
103 if (!test_and_clear_bit(keyconf->keyidx, &priv->ucode_key_table))
104 IWL_ERROR("index %d not used in uCode key table.\n",
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);
115 int iwl_set_default_wep_key(struct iwl_priv *priv,
116 struct ieee80211_key_conf *keyconf)
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;
125 spin_lock_irqsave(&priv->sta_lock, flags);
126 priv->default_wep_key++;
128 if (test_and_set_bit(keyconf->keyidx, &priv->ucode_key_table))
129 IWL_ERROR("index %d already used in uCode key table.\n",
132 priv->wep_keys[keyconf->keyidx].key_size = keyconf->keylen;
133 memcpy(&priv->wep_keys[keyconf->keyidx].key, &keyconf->key,
136 ret = iwl_send_static_wepkey_cmd(priv, 0);
137 spin_unlock_irqrestore(&priv->sta_lock, flags);
142 static int iwl_set_wep_dynamic_key_info(struct iwl_priv *priv,
143 struct ieee80211_key_conf *keyconf,
147 __le16 key_flags = 0;
150 keyconf->flags &= ~IEEE80211_KEY_FLAG_GENERATE_IV;
151 keyconf->hw_key_idx = keyconf->keyidx;
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;
157 if (keyconf->keylen == WEP_KEY_LEN_128)
158 key_flags |= STA_KEY_FLG_KEY_SIZE_MSK;
160 if (sta_id == priv->hw_params.bcast_sta_id)
161 key_flags |= STA_KEY_MULTICAST_MSK;
163 spin_lock_irqsave(&priv->sta_lock, flags);
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;
169 memcpy(priv->stations[sta_id].keyinfo.key,
170 keyconf->key, keyconf->keylen);
172 memcpy(&priv->stations[sta_id].sta.key.key[3],
173 keyconf->key, keyconf->keylen);
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;
179 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
180 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
182 ret = iwl4965_send_add_station(priv,
183 &priv->stations[sta_id].sta, CMD_ASYNC);
185 spin_unlock_irqrestore(&priv->sta_lock, flags);
190 static int iwl_set_ccmp_dynamic_key_info(struct iwl_priv *priv,
191 struct ieee80211_key_conf *keyconf,
195 __le16 key_flags = 0;
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;
201 if (sta_id == priv->hw_params.bcast_sta_id)
202 key_flags |= STA_KEY_MULTICAST_MSK;
204 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
205 keyconf->hw_key_idx = keyconf->keyidx;
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;
211 memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
214 memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
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;
223 spin_unlock_irqrestore(&priv->sta_lock, flags);
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);
230 static int iwl_set_tkip_dynamic_key_info(struct iwl_priv *priv,
231 struct ieee80211_key_conf *keyconf,
237 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
238 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
239 keyconf->hw_key_idx = keyconf->keyidx;
241 spin_lock_irqsave(&priv->sta_lock, flags);
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);
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);
252 memcpy(priv->stations[sta_id].sta.key.key, keyconf->key, 16);
254 spin_unlock_irqrestore(&priv->sta_lock, flags);
259 int iwl_remove_dynamic_key(struct iwl_priv *priv, u8 sta_id)
263 priv->key_mapping_key = 0;
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);
279 IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n");
280 return iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, 0);
283 int iwl_set_dynamic_key(struct iwl_priv *priv,
284 struct ieee80211_key_conf *key, u8 sta_id)
288 priv->key_mapping_key = 1;
292 ret = iwl_set_ccmp_dynamic_key_info(priv, key, sta_id);
295 ret = iwl_set_tkip_dynamic_key_info(priv, key, sta_id);
298 ret = iwl_set_wep_dynamic_key_info(priv, key, sta_id);
301 IWL_ERROR("Unknown alg: %s alg = %d\n", __func__, key->alg);
308 #ifdef CONFIG_IWLWIFI_DEBUG
309 static void iwl_dump_lq_cmd(struct iwl_priv *priv,
310 struct iwl_link_quality_cmd *lq)
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);
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);
323 static inline void iwl_dump_lq_cmd(struct iwl_priv *priv,
324 struct iwl_link_quality_cmd *lq)
329 int iwl_send_lq_cmd(struct iwl_priv *priv,
330 struct iwl_link_quality_cmd *lq, u8 flags)
332 struct iwl_host_cmd cmd = {
333 .id = REPLY_TX_LINK_QUALITY_CMD,
334 .len = sizeof(struct iwl_link_quality_cmd),
339 if ((lq->sta_id == 0xFF) &&
340 (priv->iw_mode == IEEE80211_IF_TYPE_IBSS))
343 if (lq->sta_id == 0xFF)
344 lq->sta_id = IWL_AP_ID;
346 iwl_dump_lq_cmd(priv,lq);
348 if (iwl_is_associated(priv) && priv->assoc_station_added &&
349 priv->lq_mngr.lq_ready)
350 return iwl_send_cmd(priv, &cmd);
354 EXPORT_SYMBOL(iwl_send_lq_cmd);