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 00000000000..e4fdfaa2b9b
--- /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);
+