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path: root/drivers/net/wireless/iwlwifi/iwl-sta.c
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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 @@
+/******************************************************************************
+ *
+ * Copyright(c) 2003 - 2008 Intel Corporation. All rights reserved.
+ *
+ * Portions of this file are derived from the ipw3945 project, as well
+ * as portions of the ieee80211 subsystem header files.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
+ *
+ * The full GNU General Public License is included in this distribution in the
+ * file called LICENSE.
+ *
+ * Contact Information:
+ * James P. Ketrenos <ipw2100-admin@linux.intel.com>
+ * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+ *
+ *****************************************************************************/
+
+#include <net/mac80211.h>
+
+#include "iwl-eeprom.h"
+#include "iwl-4965.h"
+#include "iwl-core.h"
+#include "iwl-sta.h"
+#include "iwl-io.h"
+#include "iwl-helpers.h"
+#include "iwl-4965.h"
+#include "iwl-sta.h"
+
+int iwl_get_free_ucode_key_index(struct iwl_priv *priv)
+{
+ int i;
+
+ for (i = 0; i < STA_KEY_MAX_NUM; i++)
+ if (!test_and_set_bit(i, &priv->ucode_key_table))
+ return i;
+
+ return -1;
+}
+
+int iwl_send_static_wepkey_cmd(struct iwl_priv *priv, u8 send_if_empty)
+{
+ int i, not_empty = 0;
+ u8 buff[sizeof(struct iwl_wep_cmd) +
+ sizeof(struct iwl_wep_key) * WEP_KEYS_MAX];
+ struct iwl_wep_cmd *wep_cmd = (struct iwl_wep_cmd *)buff;
+ size_t cmd_size = sizeof(struct iwl_wep_cmd);
+ struct iwl_host_cmd cmd = {
+ .id = REPLY_WEPKEY,
+ .data = wep_cmd,
+ .meta.flags = CMD_ASYNC,
+ };
+
+ memset(wep_cmd, 0, cmd_size +
+ (sizeof(struct iwl_wep_key) * WEP_KEYS_MAX));
+
+ for (i = 0; i < WEP_KEYS_MAX ; i++) {
+ wep_cmd->key[i].key_index = i;
+ if (priv->wep_keys[i].key_size) {
+ wep_cmd->key[i].key_offset = i;
+ not_empty = 1;
+ } else {
+ wep_cmd->key[i].key_offset = WEP_INVALID_OFFSET;
+ }
+
+ wep_cmd->key[i].key_size = priv->wep_keys[i].key_size;
+ memcpy(&wep_cmd->key[i].key[3], priv->wep_keys[i].key,
+ priv->wep_keys[i].key_size);
+ }
+
+ wep_cmd->global_key_type = WEP_KEY_WEP_TYPE;
+ wep_cmd->num_keys = WEP_KEYS_MAX;
+
+ cmd_size += sizeof(struct iwl_wep_key) * WEP_KEYS_MAX;
+
+ cmd.len = cmd_size;
+
+ if (not_empty || send_if_empty)
+ return iwl_send_cmd(priv, &cmd);
+ else
+ return 0;
+}
+
+int iwl_remove_default_wep_key(struct iwl_priv *priv,
+ struct ieee80211_key_conf *keyconf)
+{
+ int ret;
+ unsigned long flags;
+
+ spin_lock_irqsave(&priv->sta_lock, flags);
+
+ if (!test_and_clear_bit(keyconf->keyidx, &priv->ucode_key_table))
+ IWL_ERROR("index %d not used in uCode key table.\n",
+ keyconf->keyidx);
+
+ priv->default_wep_key--;
+ memset(&priv->wep_keys[keyconf->keyidx], 0, sizeof(priv->wep_keys[0]));
+ ret = iwl_send_static_wepkey_cmd(priv, 1);
+ spin_unlock_irqrestore(&priv->sta_lock, flags);
+
+ return ret;
+}
+
+int iwl_set_default_wep_key(struct iwl_priv *priv,
+ struct ieee80211_key_conf *keyconf)
+{
+ int ret;
+ unsigned long flags;
+
+ keyconf->flags &= ~IEEE80211_KEY_FLAG_GENERATE_IV;
+ keyconf->hw_key_idx = keyconf->keyidx;
+ priv->stations[IWL_AP_ID].keyinfo.alg = ALG_WEP;
+
+ spin_lock_irqsave(&priv->sta_lock, flags);
+ priv->default_wep_key++;
+
+ if (test_and_set_bit(keyconf->keyidx, &priv->ucode_key_table))
+ IWL_ERROR("index %d already used in uCode key table.\n",
+ keyconf->keyidx);
+
+ priv->wep_keys[keyconf->keyidx].key_size = keyconf->keylen;
+ memcpy(&priv->wep_keys[keyconf->keyidx].key, &keyconf->key,
+ keyconf->keylen);
+
+ ret = iwl_send_static_wepkey_cmd(priv, 0);
+ spin_unlock_irqrestore(&priv->sta_lock, flags);
+
+ return ret;
+}
+
+static int iwl_set_wep_dynamic_key_info(struct iwl_priv *priv,
+ struct ieee80211_key_conf *keyconf,
+ u8 sta_id)
+{
+ unsigned long flags;
+ __le16 key_flags = 0;
+ int ret;
+
+ keyconf->flags &= ~IEEE80211_KEY_FLAG_GENERATE_IV;
+ keyconf->hw_key_idx = keyconf->keyidx;
+
+ key_flags |= (STA_KEY_FLG_WEP | STA_KEY_FLG_MAP_KEY_MSK);
+ key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
+ key_flags &= ~STA_KEY_FLG_INVALID;
+
+ if (keyconf->keylen == WEP_KEY_LEN_128)
+ key_flags |= STA_KEY_FLG_KEY_SIZE_MSK;
+
+ if (sta_id == priv->hw_params.bcast_sta_id)
+ key_flags |= STA_KEY_MULTICAST_MSK;
+
+ spin_lock_irqsave(&priv->sta_lock, flags);
+
+ priv->stations[sta_id].keyinfo.alg = keyconf->alg;
+ priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
+ priv->stations[sta_id].keyinfo.keyidx = keyconf->keyidx;
+
+ memcpy(priv->stations[sta_id].keyinfo.key,
+ keyconf->key, keyconf->keylen);
+
+ memcpy(&priv->stations[sta_id].sta.key.key[3],
+ keyconf->key, keyconf->keylen);
+
+ priv->stations[sta_id].sta.key.key_offset =
+ iwl_get_free_ucode_key_index(priv);
+ priv->stations[sta_id].sta.key.key_flags = key_flags;
+
+ priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
+ priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
+
+ ret = iwl4965_send_add_station(priv,
+ &priv->stations[sta_id].sta, CMD_ASYNC);
+
+ spin_unlock_irqrestore(&priv->sta_lock, flags);
+
+ return ret;
+}
+
+static int iwl_set_ccmp_dynamic_key_info(struct iwl_priv *priv,
+ struct ieee80211_key_conf *keyconf,
+ u8 sta_id)
+{
+ unsigned long flags;
+ __le16 key_flags = 0;
+
+ key_flags |= (STA_KEY_FLG_CCMP | STA_KEY_FLG_MAP_KEY_MSK);
+ key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
+ key_flags &= ~STA_KEY_FLG_INVALID;
+
+ if (sta_id == priv->hw_params.bcast_sta_id)
+ key_flags |= STA_KEY_MULTICAST_MSK;
+
+ keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
+ keyconf->hw_key_idx = keyconf->keyidx;
+
+ spin_lock_irqsave(&priv->sta_lock, flags);
+ priv->stations[sta_id].keyinfo.alg = keyconf->alg;
+ priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
+
+ memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
+ keyconf->keylen);
+
+ memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
+ keyconf->keylen);
+
+ priv->stations[sta_id].sta.key.key_offset =
+ iwl_get_free_ucode_key_index(priv);
+ priv->stations[sta_id].sta.key.key_flags = key_flags;
+ priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
+ priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
+
+ spin_unlock_irqrestore(&priv->sta_lock, flags);
+
+ IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n");
+ return iwl4965_send_add_station(priv,
+ &priv->stations[sta_id].sta, CMD_ASYNC);
+}
+
+static int iwl_set_tkip_dynamic_key_info(struct iwl_priv *priv,
+ struct ieee80211_key_conf *keyconf,
+ u8 sta_id)
+{
+ unsigned long flags;
+ int ret = 0;
+
+ keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
+ keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
+ keyconf->hw_key_idx = keyconf->keyidx;
+
+ spin_lock_irqsave(&priv->sta_lock, flags);
+
+ priv->stations[sta_id].keyinfo.alg = keyconf->alg;
+ priv->stations[sta_id].keyinfo.conf = keyconf;
+ priv->stations[sta_id].keyinfo.keylen = 16;
+ priv->stations[sta_id].sta.key.key_offset =
+ iwl_get_free_ucode_key_index(priv);
+
+ /* This copy is acutally not needed: we get the key with each TX */
+ memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key, 16);
+
+ memcpy(priv->stations[sta_id].sta.key.key, keyconf->key, 16);
+
+ spin_unlock_irqrestore(&priv->sta_lock, flags);
+
+ return ret;
+}
+
+int iwl_remove_dynamic_key(struct iwl_priv *priv, u8 sta_id)
+{
+ unsigned long flags;
+
+ priv->key_mapping_key = 0;
+
+ spin_lock_irqsave(&priv->sta_lock, flags);
+ if (!test_and_clear_bit(priv->stations[sta_id].sta.key.key_offset,
+ &priv->ucode_key_table))
+ IWL_ERROR("index %d not used in uCode key table.\n",
+ priv->stations[sta_id].sta.key.key_offset);
+ memset(&priv->stations[sta_id].keyinfo, 0,
+ sizeof(struct iwl4965_hw_key));
+ memset(&priv->stations[sta_id].sta.key, 0,
+ sizeof(struct iwl4965_keyinfo));
+ priv->stations[sta_id].sta.key.key_flags = STA_KEY_FLG_NO_ENC;
+ priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
+ priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
+ spin_unlock_irqrestore(&priv->sta_lock, flags);
+
+ IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n");
+ return iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, 0);
+}
+
+int iwl_set_dynamic_key(struct iwl_priv *priv,
+ struct ieee80211_key_conf *key, u8 sta_id)
+{
+ int ret;
+
+ priv->key_mapping_key = 1;
+
+ switch (key->alg) {
+ case ALG_CCMP:
+ ret = iwl_set_ccmp_dynamic_key_info(priv, key, sta_id);
+ break;
+ case ALG_TKIP:
+ ret = iwl_set_tkip_dynamic_key_info(priv, key, sta_id);
+ break;
+ case ALG_WEP:
+ ret = iwl_set_wep_dynamic_key_info(priv, key, sta_id);
+ break;
+ default:
+ IWL_ERROR("Unknown alg: %s alg = %d\n", __func__, key->alg);
+ ret = -EINVAL;
+ }
+
+ return ret;
+}
+
+#ifdef CONFIG_IWLWIFI_DEBUG
+static void iwl_dump_lq_cmd(struct iwl_priv *priv,
+ struct iwl_link_quality_cmd *lq)
+{
+ int i;
+ IWL_DEBUG_RATE("lq station id 0x%x\n", lq->sta_id);
+ IWL_DEBUG_RATE("lq dta 0x%X 0x%X\n",
+ lq->general_params.single_stream_ant_msk,
+ lq->general_params.dual_stream_ant_msk);
+
+ for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++)
+ IWL_DEBUG_RATE("lq index %d 0x%X\n",
+ i, lq->rs_table[i].rate_n_flags);
+}
+#else
+static inline void iwl_dump_lq_cmd(struct iwl_priv *priv,
+ struct iwl_link_quality_cmd *lq)
+{
+}
+#endif
+
+int iwl_send_lq_cmd(struct iwl_priv *priv,
+ struct iwl_link_quality_cmd *lq, u8 flags)
+{
+ struct iwl_host_cmd cmd = {
+ .id = REPLY_TX_LINK_QUALITY_CMD,
+ .len = sizeof(struct iwl_link_quality_cmd),
+ .meta.flags = flags,
+ .data = lq,
+ };
+
+ if ((lq->sta_id == 0xFF) &&
+ (priv->iw_mode == IEEE80211_IF_TYPE_IBSS))
+ return -EINVAL;
+
+ if (lq->sta_id == 0xFF)
+ lq->sta_id = IWL_AP_ID;
+
+ iwl_dump_lq_cmd(priv,lq);
+
+ if (iwl_is_associated(priv) && priv->assoc_station_added &&
+ priv->lq_mngr.lq_ready)
+ return iwl_send_cmd(priv, &cmd);
+
+ return 0;
+}
+EXPORT_SYMBOL(iwl_send_lq_cmd);
+