[linux.git] / drivers / net / wireless / iwlwifi / iwl-sta.c

/******************************************************************************
 *
 * 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 <[email protected]>
 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
 *
 *****************************************************************************/

#include <net/mac80211.h>
#include <linux/etherdevice.h>

#include "iwl-eeprom.h"
#include "iwl-dev.h"
#include "iwl-core.h"
#include "iwl-sta.h"
#include "iwl-io.h"
#include "iwl-helpers.h"

u8 iwl_find_station(struct iwl_priv *priv, const u8 *addr)
{
	int i;
	int start = 0;
	int ret = IWL_INVALID_STATION;
	unsigned long flags;
	DECLARE_MAC_BUF(mac);

	if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) ||
	    (priv->iw_mode == IEEE80211_IF_TYPE_AP))
		start = IWL_STA_ID;

	if (is_broadcast_ether_addr(addr))
		return priv->hw_params.bcast_sta_id;

	spin_lock_irqsave(&priv->sta_lock, flags);
	for (i = start; i < priv->hw_params.max_stations; i++)
		if (priv->stations[i].used &&
		    (!compare_ether_addr(priv->stations[i].sta.sta.addr,
					 addr))) {
			ret = i;
			goto out;
		}

	IWL_DEBUG_ASSOC_LIMIT("can not find STA %s total %d\n",
			      print_mac(mac, addr), priv->num_stations);

 out:
	spin_unlock_irqrestore(&priv->sta_lock, flags);
	return ret;
}
EXPORT_SYMBOL(iwl_find_station);

int iwl_send_add_sta(struct iwl_priv *priv,
		     struct iwl_addsta_cmd *sta, u8 flags)
{
	struct iwl_rx_packet *res = NULL;
	int ret = 0;
	u8 data[sizeof(*sta)];
	struct iwl_host_cmd cmd = {
		.id = REPLY_ADD_STA,
		.meta.flags = flags,
		.data = data,
	};

	if (!(flags & CMD_ASYNC))
		cmd.meta.flags |= CMD_WANT_SKB;

	cmd.len = priv->cfg->ops->utils->build_addsta_hcmd(sta, data);
	ret = iwl_send_cmd(priv, &cmd);

	if (ret || (flags & CMD_ASYNC))
		return ret;

	res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
	if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
		IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
			  res->hdr.flags);
		ret = -EIO;
	}

	if (ret == 0) {
		switch (res->u.add_sta.status) {
		case ADD_STA_SUCCESS_MSK:
			IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
			break;
		default:
			ret = -EIO;
			IWL_WARNING("REPLY_ADD_STA failed\n");
			break;
		}
	}

	priv->alloc_rxb_skb--;
	dev_kfree_skb_any(cmd.meta.u.skb);

	return ret;
}
EXPORT_SYMBOL(iwl_send_add_sta);

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;
}
EXPORT_SYMBOL(iwl_send_static_wepkey_cmd);

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;
}
EXPORT_SYMBOL(iwl_remove_default_wep_key);

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;
}
EXPORT_SYMBOL(iwl_set_default_wep_key);

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);

	if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
			== STA_KEY_FLG_NO_ENC)
		priv->stations[sta_id].sta.key.key_offset =
				 iwl_get_free_ucode_key_index(priv);
	/* else, we are overriding an existing key => no need to allocated room
	 * in uCode. */

	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 = iwl_send_add_sta(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);

	if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
			== STA_KEY_FLG_NO_ENC)
		priv->stations[sta_id].sta.key.key_offset =
				 iwl_get_free_ucode_key_index(priv);
	/* else, we are overriding an existing key => no need to allocated room
	 * in uCode. */

	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 iwl_send_add_sta(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;

	if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
			== STA_KEY_FLG_NO_ENC)
		priv->stations[sta_id].sta.key.key_offset =
				 iwl_get_free_ucode_key_index(priv);
	/* else, we are overriding an existing key => no need to allocated room
	 * in uCode. */

	/* 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,
				struct ieee80211_key_conf *keyconf,
				u8 sta_id)
{
	unsigned long flags;
	int ret = 0;
	u16 key_flags;
	u8 keyidx;

	priv->key_mapping_key = 0;

	spin_lock_irqsave(&priv->sta_lock, flags);
	key_flags = le16_to_cpu(priv->stations[sta_id].sta.key.key_flags);
	keyidx = (key_flags >> STA_KEY_FLG_KEYID_POS) & 0x3;

	if (keyconf->keyidx != keyidx) {
		/* We need to remove a key with index different that the one
		 * in the uCode. This means that the key we need to remove has
		 * been replaced by another one with different index.
		 * Don't do anything and return ok
		 */
		spin_unlock_irqrestore(&priv->sta_lock, flags);
		return 0;
	}

	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 iwl_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 | STA_KEY_FLG_INVALID;
	priv->stations[sta_id].sta.key.key_offset = WEP_INVALID_OFFSET;
	priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
	priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;

	IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n");
	ret =  iwl_send_add_sta(priv, &priv->stations[sta_id].sta, 0);
	spin_unlock_irqrestore(&priv->sta_lock, flags);
	return ret;
}
EXPORT_SYMBOL(iwl_remove_dynamic_key);

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;
}
EXPORT_SYMBOL(iwl_set_dynamic_key);

#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);
Commit	Line	Data
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 <[email protected]>
	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
6974e363 EG	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	40	u8 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	}
	71	EXPORT_SYMBOL(iwl_find_station);
	72
133636de TW	73	int 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	}
	118	EXPORT_SYMBOL(iwl_send_add_sta);
947b13a7	119
80fb47a1 EG	120	int 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
	131	int 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	}
27aaba0c	173	EXPORT_SYMBOL(iwl_send_static_wepkey_cmd);
6974e363 EG	174
6974e363 EG	175	int iwl_remove_default_wep_key(struct iwl_priv *priv,
80fb47a1	176	struct ieee80211_key_conf *keyconf)
6974e363 EG	177	{
	178	int ret;
	179	unsigned long flags;
	180
	181	spin_lock_irqsave(&priv->sta_lock, flags);
80fb47a1 EG	182
	183	if (!test_and_clear_bit(keyconf->keyidx, &priv->ucode_key_table))
	184	IWL_ERROR("index %d not used in uCode key table.\n",
	185	keyconf->keyidx);
	186
6974e363	187	priv->default_wep_key--;
80fb47a1	188	memset(&priv->wep_keys[keyconf->keyidx], 0, sizeof(priv->wep_keys[0]));
6974e363 EG	189	ret = iwl_send_static_wepkey_cmd(priv, 1);
	190	spin_unlock_irqrestore(&priv->sta_lock, flags);
	191
	192	return ret;
	193	}
27aaba0c	194	EXPORT_SYMBOL(iwl_remove_default_wep_key);
6974e363 EG	195
	196	int iwl_set_default_wep_key(struct iwl_priv *priv,
	197	struct ieee80211_key_conf *keyconf)
	198	{
	199	int ret;
	200	unsigned long flags;
	201
	202	keyconf->flags &= ~IEEE80211_KEY_FLAG_GENERATE_IV;
	203	keyconf->hw_key_idx = keyconf->keyidx;
	204	priv->stations[IWL_AP_ID].keyinfo.alg = ALG_WEP;
	205
	206	spin_lock_irqsave(&priv->sta_lock, flags);
	207	priv->default_wep_key++;
	208
80fb47a1 EG	209	if (test_and_set_bit(keyconf->keyidx, &priv->ucode_key_table))
	210	IWL_ERROR("index %d already used in uCode key table.\n",
	211	keyconf->keyidx);
	212
6974e363 EG	213	priv->wep_keys[keyconf->keyidx].key_size = keyconf->keylen;
	214	memcpy(&priv->wep_keys[keyconf->keyidx].key, &keyconf->key,
	215	keyconf->keylen);
	216
	217	ret = iwl_send_static_wepkey_cmd(priv, 0);
	218	spin_unlock_irqrestore(&priv->sta_lock, flags);
	219
	220	return ret;
	221	}
27aaba0c	222	EXPORT_SYMBOL(iwl_set_default_wep_key);
6974e363	223
7480513f	224	static int iwl_set_wep_dynamic_key_info(struct iwl_priv *priv,
0211ddda EG	225	struct ieee80211_key_conf *keyconf,
	226	u8 sta_id)
	227	{
	228	unsigned long flags;
	229	__le16 key_flags = 0;
	230	int ret;
	231
	232	keyconf->flags &= ~IEEE80211_KEY_FLAG_GENERATE_IV;
	233	keyconf->hw_key_idx = keyconf->keyidx;
	234
	235	key_flags \|= (STA_KEY_FLG_WEP \| STA_KEY_FLG_MAP_KEY_MSK);
	236	key_flags \|= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
	237	key_flags &= ~STA_KEY_FLG_INVALID;
	238
	239	if (keyconf->keylen == WEP_KEY_LEN_128)
	240	key_flags \|= STA_KEY_FLG_KEY_SIZE_MSK;
	241
5425e490	242	if (sta_id == priv->hw_params.bcast_sta_id)
0211ddda EG	243	key_flags \|= STA_KEY_MULTICAST_MSK;
	244
	245	spin_lock_irqsave(&priv->sta_lock, flags);
	246
	247	priv->stations[sta_id].keyinfo.alg = keyconf->alg;
	248	priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
	249	priv->stations[sta_id].keyinfo.keyidx = keyconf->keyidx;
	250
	251	memcpy(priv->stations[sta_id].keyinfo.key,
	252	keyconf->key, keyconf->keylen);
	253
	254	memcpy(&priv->stations[sta_id].sta.key.key[3],
	255	keyconf->key, keyconf->keylen);
	256
3ec47732 EG	257	if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
	258	== STA_KEY_FLG_NO_ENC)
	259	priv->stations[sta_id].sta.key.key_offset =
80fb47a1	260	iwl_get_free_ucode_key_index(priv);
3ec47732 EG	261	/* else, we are overriding an existing key => no need to allocated room
3ec47732 EG	262	* in uCode. */
0211ddda	263
3ec47732	264	priv->stations[sta_id].sta.key.key_flags = key_flags;
0211ddda EG	265	priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
	266	priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
	267
133636de	268	ret = iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
0211ddda EG	269
	270	spin_unlock_irqrestore(&priv->sta_lock, flags);
	271
	272	return ret;
	273	}
7480513f EG	274
	275	static int iwl_set_ccmp_dynamic_key_info(struct iwl_priv *priv,
	276	struct ieee80211_key_conf *keyconf,
	277	u8 sta_id)
	278	{
	279	unsigned long flags;
	280	__le16 key_flags = 0;
	281
	282	key_flags \|= (STA_KEY_FLG_CCMP \| STA_KEY_FLG_MAP_KEY_MSK);
	283	key_flags \|= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
	284	key_flags &= ~STA_KEY_FLG_INVALID;
	285
5425e490	286	if (sta_id == priv->hw_params.bcast_sta_id)
7480513f EG	287	key_flags \|= STA_KEY_MULTICAST_MSK;
	288
	289	keyconf->flags \|= IEEE80211_KEY_FLAG_GENERATE_IV;
	290	keyconf->hw_key_idx = keyconf->keyidx;
	291
	292	spin_lock_irqsave(&priv->sta_lock, flags);
	293	priv->stations[sta_id].keyinfo.alg = keyconf->alg;
	294	priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
	295
	296	memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
	297	keyconf->keylen);
	298
	299	memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
	300	keyconf->keylen);
	301
3ec47732 EG	302	if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
	303	== STA_KEY_FLG_NO_ENC)
	304	priv->stations[sta_id].sta.key.key_offset =
	305	iwl_get_free_ucode_key_index(priv);
	306	/* else, we are overriding an existing key => no need to allocated room
	307	* in uCode. */
	308
7480513f EG	309	priv->stations[sta_id].sta.key.key_flags = key_flags;
	310	priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
	311	priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
	312
	313	spin_unlock_irqrestore(&priv->sta_lock, flags);
	314
	315	IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n");
133636de	316	return iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
7480513f EG	317	}
	318
	319	static int iwl_set_tkip_dynamic_key_info(struct iwl_priv *priv,
	320	struct ieee80211_key_conf *keyconf,
	321	u8 sta_id)
	322	{
	323	unsigned long flags;
	324	int ret = 0;
	325
	326	keyconf->flags \|= IEEE80211_KEY_FLAG_GENERATE_IV;
	327	keyconf->flags \|= IEEE80211_KEY_FLAG_GENERATE_MMIC;
	328	keyconf->hw_key_idx = keyconf->keyidx;
	329
	330	spin_lock_irqsave(&priv->sta_lock, flags);
	331
	332	priv->stations[sta_id].keyinfo.alg = keyconf->alg;
	333	priv->stations[sta_id].keyinfo.conf = keyconf;
	334	priv->stations[sta_id].keyinfo.keylen = 16;
3ec47732 EG	335
	336	if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
	337	== STA_KEY_FLG_NO_ENC)
	338	priv->stations[sta_id].sta.key.key_offset =
77bab602	339	iwl_get_free_ucode_key_index(priv);
3ec47732 EG	340	/* else, we are overriding an existing key => no need to allocated room
3ec47732 EG	341	* in uCode. */
7480513f EG	342
	343	/* This copy is acutally not needed: we get the key with each TX */
	344	memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key, 16);
	345
	346	memcpy(priv->stations[sta_id].sta.key.key, keyconf->key, 16);
	347
	348	spin_unlock_irqrestore(&priv->sta_lock, flags);
	349
	350	return ret;
	351	}
	352
3ec47732 EG	353	int iwl_remove_dynamic_key(struct iwl_priv *priv,
	354	struct ieee80211_key_conf *keyconf,
	355	u8 sta_id)
7480513f EG	356	{
7480513f EG	357	unsigned long flags;
3ec47732 EG	358	int ret = 0;
	359	u16 key_flags;
	360	u8 keyidx;
7480513f EG	361
	362	priv->key_mapping_key = 0;
	363
	364	spin_lock_irqsave(&priv->sta_lock, flags);
3ec47732 EG	365	key_flags = le16_to_cpu(priv->stations[sta_id].sta.key.key_flags);
	366	keyidx = (key_flags >> STA_KEY_FLG_KEYID_POS) & 0x3;
	367
	368	if (keyconf->keyidx != keyidx) {
	369	/* We need to remove a key with index different that the one
	370	* in the uCode. This means that the key we need to remove has
	371	* been replaced by another one with different index.
	372	* Don't do anything and return ok
	373	*/
	374	spin_unlock_irqrestore(&priv->sta_lock, flags);
	375	return 0;
	376	}
	377
7480513f EG	378	if (!test_and_clear_bit(priv->stations[sta_id].sta.key.key_offset,
	379	&priv->ucode_key_table))
	380	IWL_ERROR("index %d not used in uCode key table.\n",
	381	priv->stations[sta_id].sta.key.key_offset);
	382	memset(&priv->stations[sta_id].keyinfo, 0,
6def9761	383	sizeof(struct iwl_hw_key));
7480513f EG	384	memset(&priv->stations[sta_id].sta.key, 0,
7480513f EG	385	sizeof(struct iwl4965_keyinfo));
3ec47732 EG	386	priv->stations[sta_id].sta.key.key_flags =
	387	STA_KEY_FLG_NO_ENC \| STA_KEY_FLG_INVALID;
	388	priv->stations[sta_id].sta.key.key_offset = WEP_INVALID_OFFSET;
7480513f EG	389	priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
7480513f EG	390	priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
7480513f EG	391
7480513f EG	392	IWL_DEBUG_INFO("hwcrypto: clear ucode station key info\n");
133636de	393	ret = iwl_send_add_sta(priv, &priv->stations[sta_id].sta, 0);
3ec47732 EG	394	spin_unlock_irqrestore(&priv->sta_lock, flags);
3ec47732 EG	395	return ret;
7480513f	396	}
27aaba0c	397	EXPORT_SYMBOL(iwl_remove_dynamic_key);
7480513f EG	398
	399	int iwl_set_dynamic_key(struct iwl_priv *priv,
	400	struct ieee80211_key_conf *key, u8 sta_id)
	401	{
	402	int ret;
	403
	404	priv->key_mapping_key = 1;
	405
	406	switch (key->alg) {
	407	case ALG_CCMP:
	408	ret = iwl_set_ccmp_dynamic_key_info(priv, key, sta_id);
	409	break;
	410	case ALG_TKIP:
	411	ret = iwl_set_tkip_dynamic_key_info(priv, key, sta_id);
	412	break;
	413	case ALG_WEP:
	414	ret = iwl_set_wep_dynamic_key_info(priv, key, sta_id);
	415	break;
	416	default:
	417	IWL_ERROR("Unknown alg: %s alg = %d\n", __func__, key->alg);
	418	ret = -EINVAL;
	419	}
	420
	421	return ret;
	422	}
27aaba0c	423	EXPORT_SYMBOL(iwl_set_dynamic_key);
7480513f	424
66c73db7 TW	425	#ifdef CONFIG_IWLWIFI_DEBUG
	426	static void iwl_dump_lq_cmd(struct iwl_priv *priv,
	427	struct iwl_link_quality_cmd *lq)
	428	{
	429	int i;
	430	IWL_DEBUG_RATE("lq station id 0x%x\n", lq->sta_id);
	431	IWL_DEBUG_RATE("lq dta 0x%X 0x%X\n",
	432	lq->general_params.single_stream_ant_msk,
	433	lq->general_params.dual_stream_ant_msk);
	434
	435	for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++)
	436	IWL_DEBUG_RATE("lq index %d 0x%X\n",
	437	i, lq->rs_table[i].rate_n_flags);
	438	}
	439	#else
	440	static inline void iwl_dump_lq_cmd(struct iwl_priv *priv,
	441	struct iwl_link_quality_cmd *lq)
	442	{
	443	}
	444	#endif
	445
	446	int iwl_send_lq_cmd(struct iwl_priv *priv,
	447	struct iwl_link_quality_cmd *lq, u8 flags)
	448	{
	449	struct iwl_host_cmd cmd = {
	450	.id = REPLY_TX_LINK_QUALITY_CMD,
	451	.len = sizeof(struct iwl_link_quality_cmd),
	452	.meta.flags = flags,
	453	.data = lq,
	454	};
	455
	456	if ((lq->sta_id == 0xFF) &&
	457	(priv->iw_mode == IEEE80211_IF_TYPE_IBSS))
	458	return -EINVAL;
	459
	460	if (lq->sta_id == 0xFF)
	461	lq->sta_id = IWL_AP_ID;
	462
	463	iwl_dump_lq_cmd(priv,lq);
	464
	465	if (iwl_is_associated(priv) && priv->assoc_station_added &&
	466	priv->lq_mngr.lq_ready)
	467	return iwl_send_cmd(priv, &cmd);
	468
	469	return 0;
	470	}
	471	EXPORT_SYMBOL(iwl_send_lq_cmd);
	472