iwl-sta.c 34.7 KB
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/******************************************************************************
 *
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 * Copyright(c) 2003 - 2010 Intel Corporation. All rights reserved.
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 *
 * 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:
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 *  Intel Linux Wireless <ilw@linux.intel.com>
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 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
 *
 *****************************************************************************/

#include <net/mac80211.h>
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#include <linux/etherdevice.h>
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#include "iwl-dev.h"
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#include "iwl-core.h"
#include "iwl-sta.h"
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#define IWL_STA_DRIVER_ACTIVE BIT(0) /* driver entry is active */
#define IWL_STA_UCODE_ACTIVE  BIT(1) /* ucode entry is active */
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u8 iwl_find_station(struct iwl_priv *priv, const u8 *addr)
{
	int i;
	int start = 0;
	int ret = IWL_INVALID_STATION;
	unsigned long flags;

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	if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) ||
	    (priv->iw_mode == NL80211_IFTYPE_AP))
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		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;
		}

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	IWL_DEBUG_ASSOC_LIMIT(priv, "can not find STA %pM total %d\n",
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			      addr, priv->num_stations);
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 out:
	spin_unlock_irqrestore(&priv->sta_lock, flags);
	return ret;
}
EXPORT_SYMBOL(iwl_find_station);

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int iwl_get_ra_sta_id(struct iwl_priv *priv, struct ieee80211_hdr *hdr)
{
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	if (priv->iw_mode == NL80211_IFTYPE_STATION) {
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		return IWL_AP_ID;
	} else {
		u8 *da = ieee80211_get_DA(hdr);
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		return iwl_find_station(priv, da);
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	}
}
EXPORT_SYMBOL(iwl_get_ra_sta_id);

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static void iwl_sta_ucode_activate(struct iwl_priv *priv, u8 sta_id)
{
	unsigned long flags;

	spin_lock_irqsave(&priv->sta_lock, flags);

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	if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE))
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		IWL_ERR(priv, "ACTIVATE a non DRIVER active station %d\n",
			sta_id);
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	priv->stations[sta_id].used |= IWL_STA_UCODE_ACTIVE;
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	IWL_DEBUG_ASSOC(priv, "Added STA to Ucode: %pM\n",
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			priv->stations[sta_id].sta.sta.addr);
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	spin_unlock_irqrestore(&priv->sta_lock, flags);
}

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static void iwl_add_sta_callback(struct iwl_priv *priv,
				 struct iwl_device_cmd *cmd,
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				 struct iwl_rx_packet *pkt)
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{
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	struct iwl_addsta_cmd *addsta =
		(struct iwl_addsta_cmd *)cmd->cmd.payload;
	u8 sta_id = addsta->sta.sta_id;
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	if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
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		IWL_ERR(priv, "Bad return from REPLY_ADD_STA (0x%08X)\n",
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			  pkt->hdr.flags);
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		return;
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	}

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	switch (pkt->u.add_sta.status) {
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	case ADD_STA_SUCCESS_MSK:
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		iwl_sta_ucode_activate(priv, sta_id);
		 /* fall through */
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	default:
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		IWL_DEBUG_HC(priv, "Received REPLY_ADD_STA:(0x%08X)\n",
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			     pkt->u.add_sta.status);
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		break;
	}
}

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

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	if (flags & CMD_ASYNC)
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		cmd.callback = iwl_add_sta_callback;
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	else
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		cmd.flags |= CMD_WANT_SKB;
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	cmd.len = priv->cfg->ops->utils->build_addsta_hcmd(sta, data);
	ret = iwl_send_cmd(priv, &cmd);

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

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	pkt = (struct iwl_rx_packet *)cmd.reply_page;
	if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
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		IWL_ERR(priv, "Bad return from REPLY_ADD_STA (0x%08X)\n",
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			  pkt->hdr.flags);
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		ret = -EIO;
	}

	if (ret == 0) {
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		switch (pkt->u.add_sta.status) {
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		case ADD_STA_SUCCESS_MSK:
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			iwl_sta_ucode_activate(priv, sta->sta.sta_id);
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			IWL_DEBUG_INFO(priv, "REPLY_ADD_STA PASSED\n");
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			break;
		default:
			ret = -EIO;
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			IWL_WARN(priv, "REPLY_ADD_STA failed\n");
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			break;
		}
	}
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	iwl_free_pages(priv, cmd.reply_page);
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	return ret;
}
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EXPORT_SYMBOL(iwl_send_add_sta);
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static void iwl_set_ht_add_station(struct iwl_priv *priv, u8 index,
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				   struct ieee80211_sta_ht_cap *sta_ht_inf)
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{
	__le32 sta_flags;
	u8 mimo_ps_mode;

	if (!sta_ht_inf || !sta_ht_inf->ht_supported)
		goto done;

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	mimo_ps_mode = (sta_ht_inf->cap & IEEE80211_HT_CAP_SM_PS) >> 2;
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	IWL_DEBUG_ASSOC(priv, "spatial multiplexing power save mode: %s\n",
			(mimo_ps_mode == WLAN_HT_CAP_SM_PS_STATIC) ?
			"static" :
			(mimo_ps_mode == WLAN_HT_CAP_SM_PS_DYNAMIC) ?
			"dynamic" : "disabled");
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	sta_flags = priv->stations[index].sta.station_flags;

	sta_flags &= ~(STA_FLG_RTS_MIMO_PROT_MSK | STA_FLG_MIMO_DIS_MSK);

	switch (mimo_ps_mode) {
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	case WLAN_HT_CAP_SM_PS_STATIC:
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		sta_flags |= STA_FLG_MIMO_DIS_MSK;
		break;
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	case WLAN_HT_CAP_SM_PS_DYNAMIC:
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		sta_flags |= STA_FLG_RTS_MIMO_PROT_MSK;
		break;
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	case WLAN_HT_CAP_SM_PS_DISABLED:
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		break;
	default:
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		IWL_WARN(priv, "Invalid MIMO PS mode %d\n", mimo_ps_mode);
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		break;
	}

	sta_flags |= cpu_to_le32(
	      (u32)sta_ht_inf->ampdu_factor << STA_FLG_MAX_AGG_SIZE_POS);

	sta_flags |= cpu_to_le32(
	      (u32)sta_ht_inf->ampdu_density << STA_FLG_AGG_MPDU_DENSITY_POS);

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	if (iwl_is_ht40_tx_allowed(priv, sta_ht_inf))
		sta_flags |= STA_FLG_HT40_EN_MSK;
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	else
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		sta_flags &= ~STA_FLG_HT40_EN_MSK;
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	priv->stations[index].sta.station_flags = sta_flags;
 done:
	return;
}

/**
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 * iwl_add_station - Add station to tables in driver and device
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 */
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u8 iwl_add_station(struct iwl_priv *priv, const u8 *addr, bool is_ap, u8 flags,
		struct ieee80211_sta_ht_cap *ht_info)
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{
	struct iwl_station_entry *station;
	unsigned long flags_spin;
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	int i;
	int sta_id = IWL_INVALID_STATION;
	u16 rate;
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	spin_lock_irqsave(&priv->sta_lock, flags_spin);
	if (is_ap)
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		sta_id = IWL_AP_ID;
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	else if (is_broadcast_ether_addr(addr))
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		sta_id = priv->hw_params.bcast_sta_id;
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	else
		for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++) {
			if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
						addr)) {
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				sta_id = i;
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				break;
			}

			if (!priv->stations[i].used &&
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			    sta_id == IWL_INVALID_STATION)
				sta_id = i;
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		}

	/* These two conditions have the same outcome, but keep them separate
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	   since they have different meanings */
	if (unlikely(sta_id == IWL_INVALID_STATION)) {
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		spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
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		return sta_id;
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	}

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	if (priv->stations[sta_id].used &&
	    !compare_ether_addr(priv->stations[sta_id].sta.sta.addr, addr)) {
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		spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
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		return sta_id;
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	}


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	station = &priv->stations[sta_id];
	station->used = IWL_STA_DRIVER_ACTIVE;
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	IWL_DEBUG_ASSOC(priv, "Add STA to driver ID %d: %pM\n",
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			sta_id, addr);
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	priv->num_stations++;

	/* Set up the REPLY_ADD_STA command to send to device */
	memset(&station->sta, 0, sizeof(struct iwl_addsta_cmd));
	memcpy(station->sta.sta.addr, addr, ETH_ALEN);
	station->sta.mode = 0;
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	station->sta.sta.sta_id = sta_id;
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	station->sta.station_flags = 0;

	/* BCAST station and IBSS stations do not work in HT mode */
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	if (sta_id != priv->hw_params.bcast_sta_id &&
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	    priv->iw_mode != NL80211_IFTYPE_ADHOC)
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		iwl_set_ht_add_station(priv, sta_id, ht_info);
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	/* 3945 only */
	rate = (priv->band == IEEE80211_BAND_5GHZ) ?
		IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP;
	/* Turn on both antennas for the station... */
	station->sta.rate_n_flags = cpu_to_le16(rate | RATE_MCS_ANT_AB_MSK);

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	spin_unlock_irqrestore(&priv->sta_lock, flags_spin);

	/* Add station to device's station table */
	iwl_send_add_sta(priv, &station->sta, flags);
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	return sta_id;
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}
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EXPORT_SYMBOL(iwl_add_station);
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static void iwl_sta_ucode_deactivate(struct iwl_priv *priv, const char *addr)
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{
	unsigned long flags;
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	u8 sta_id = iwl_find_station(priv, addr);
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	BUG_ON(sta_id == IWL_INVALID_STATION);

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	IWL_DEBUG_ASSOC(priv, "Removed STA from Ucode: %pM\n", addr);
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	spin_lock_irqsave(&priv->sta_lock, flags);

	/* Ucode must be active and driver must be non active */
	if (priv->stations[sta_id].used != IWL_STA_UCODE_ACTIVE)
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		IWL_ERR(priv, "removed non active STA %d\n", sta_id);
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	priv->stations[sta_id].used &= ~IWL_STA_UCODE_ACTIVE;

	memset(&priv->stations[sta_id], 0, sizeof(struct iwl_station_entry));
	spin_unlock_irqrestore(&priv->sta_lock, flags);
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}

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static void iwl_remove_sta_callback(struct iwl_priv *priv,
				    struct iwl_device_cmd *cmd,
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				    struct iwl_rx_packet *pkt)
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{
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	struct iwl_rem_sta_cmd *rm_sta =
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			(struct iwl_rem_sta_cmd *)cmd->cmd.payload;
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	const char *addr = rm_sta->addr;
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	if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
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		IWL_ERR(priv, "Bad return from REPLY_REMOVE_STA (0x%08X)\n",
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		pkt->hdr.flags);
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		return;
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	}

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	switch (pkt->u.rem_sta.status) {
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	case REM_STA_SUCCESS_MSK:
		iwl_sta_ucode_deactivate(priv, addr);
		break;
	default:
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		IWL_ERR(priv, "REPLY_REMOVE_STA failed\n");
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		break;
	}
}

static int iwl_send_remove_station(struct iwl_priv *priv, const u8 *addr,
				   u8 flags)
{
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	struct iwl_rx_packet *pkt;
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	int ret;

	struct iwl_rem_sta_cmd rm_sta_cmd;

	struct iwl_host_cmd cmd = {
		.id = REPLY_REMOVE_STA,
		.len = sizeof(struct iwl_rem_sta_cmd),
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		.flags = flags,
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		.data = &rm_sta_cmd,
	};

	memset(&rm_sta_cmd, 0, sizeof(rm_sta_cmd));
	rm_sta_cmd.num_sta = 1;
	memcpy(&rm_sta_cmd.addr, addr , ETH_ALEN);

	if (flags & CMD_ASYNC)
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		cmd.callback = iwl_remove_sta_callback;
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	else
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		cmd.flags |= CMD_WANT_SKB;
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	ret = iwl_send_cmd(priv, &cmd);

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

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	pkt = (struct iwl_rx_packet *)cmd.reply_page;
	if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
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		IWL_ERR(priv, "Bad return from REPLY_REMOVE_STA (0x%08X)\n",
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			  pkt->hdr.flags);
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		ret = -EIO;
	}

	if (!ret) {
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		switch (pkt->u.rem_sta.status) {
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		case REM_STA_SUCCESS_MSK:
			iwl_sta_ucode_deactivate(priv, addr);
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			IWL_DEBUG_ASSOC(priv, "REPLY_REMOVE_STA PASSED\n");
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			break;
		default:
			ret = -EIO;
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			IWL_ERR(priv, "REPLY_REMOVE_STA failed\n");
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			break;
		}
	}
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	iwl_free_pages(priv, cmd.reply_page);
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	return ret;
}
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/**
 * iwl_remove_station - Remove driver's knowledge of station.
 */
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int iwl_remove_station(struct iwl_priv *priv, const u8 *addr, bool is_ap)
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{
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	int sta_id = IWL_INVALID_STATION;
	int i, ret = -EINVAL;
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	unsigned long flags;

	spin_lock_irqsave(&priv->sta_lock, flags);

	if (is_ap)
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		sta_id = IWL_AP_ID;
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	else if (is_broadcast_ether_addr(addr))
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		sta_id = priv->hw_params.bcast_sta_id;
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	else
		for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++)
			if (priv->stations[i].used &&
			    !compare_ether_addr(priv->stations[i].sta.sta.addr,
						addr)) {
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				sta_id = i;
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				break;
			}

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	if (unlikely(sta_id == IWL_INVALID_STATION))
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		goto out;

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	IWL_DEBUG_ASSOC(priv, "Removing STA from driver:%d  %pM\n",
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		sta_id, addr);
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	if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE)) {
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		IWL_ERR(priv, "Removing %pM but non DRIVER active\n",
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				addr);
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		goto out;
	}

	if (!(priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE)) {
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		IWL_ERR(priv, "Removing %pM but non UCODE active\n",
435
				addr);
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		goto out;
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	}

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	priv->stations[sta_id].used &= ~IWL_STA_DRIVER_ACTIVE;

	priv->num_stations--;

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	BUG_ON(priv->num_stations < 0);
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	spin_unlock_irqrestore(&priv->sta_lock, flags);
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	ret = iwl_send_remove_station(priv, addr, CMD_ASYNC);
	return ret;
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out:
	spin_unlock_irqrestore(&priv->sta_lock, flags);
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	return ret;
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}
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/**
 * iwl_clear_stations_table - Clear the driver's station table
 *
 * NOTE:  This does not clear or otherwise alter the device's station table.
 */
void iwl_clear_stations_table(struct iwl_priv *priv)
{
	unsigned long flags;
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	int i;
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	spin_lock_irqsave(&priv->sta_lock, flags);

	if (iwl_is_alive(priv) &&
	   !test_bit(STATUS_EXIT_PENDING, &priv->status) &&
	   iwl_send_cmd_pdu_async(priv, REPLY_REMOVE_ALL_STA, 0, NULL, NULL))
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		IWL_ERR(priv, "Couldn't clear the station table\n");
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	priv->num_stations = 0;
	memset(priv->stations, 0, sizeof(priv->stations));

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	/* clean ucode key table bit map */
	priv->ucode_key_table = 0;

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	/* keep track of static keys */
	for (i = 0; i < WEP_KEYS_MAX ; i++) {
		if (priv->wep_keys[i].key_size)
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			set_bit(i, &priv->ucode_key_table);
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	}

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	spin_unlock_irqrestore(&priv->sta_lock, flags);
}
EXPORT_SYMBOL(iwl_clear_stations_table);

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int iwl_get_free_ucode_key_index(struct iwl_priv *priv)
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{
	int i;

	for (i = 0; i < STA_KEY_MAX_NUM; i++)
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		if (!test_and_set_bit(i, &priv->ucode_key_table))
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			return i;

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	return WEP_INVALID_OFFSET;
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}
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EXPORT_SYMBOL(iwl_get_free_ucode_key_index);
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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,
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		.flags = CMD_ASYNC,
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	};

	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;
}
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EXPORT_SYMBOL(iwl_send_static_wepkey_cmd);
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int iwl_remove_default_wep_key(struct iwl_priv *priv,
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			       struct ieee80211_key_conf *keyconf)
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{
	int ret;
	unsigned long flags;

	spin_lock_irqsave(&priv->sta_lock, flags);
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	IWL_DEBUG_WEP(priv, "Removing default WEP key: idx=%d\n",
		      keyconf->keyidx);
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	if (!test_and_clear_bit(keyconf->keyidx, &priv->ucode_key_table))
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		IWL_ERR(priv, "index %d not used in uCode key table.\n",
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			  keyconf->keyidx);

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	priv->default_wep_key--;
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	memset(&priv->wep_keys[keyconf->keyidx], 0, sizeof(priv->wep_keys[0]));
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	if (iwl_is_rfkill(priv)) {
		IWL_DEBUG_WEP(priv, "Not sending REPLY_WEPKEY command due to RFKILL.\n");
		spin_unlock_irqrestore(&priv->sta_lock, flags);
		return 0;
	}
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	ret = iwl_send_static_wepkey_cmd(priv, 1);
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	IWL_DEBUG_WEP(priv, "Remove default WEP key: idx=%d ret=%d\n",
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		      keyconf->keyidx, ret);
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	spin_unlock_irqrestore(&priv->sta_lock, flags);

	return ret;
}
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EXPORT_SYMBOL(iwl_remove_default_wep_key);
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int iwl_set_default_wep_key(struct iwl_priv *priv,
			    struct ieee80211_key_conf *keyconf)
{
	int ret;
	unsigned long flags;

580 581
	if (keyconf->keylen != WEP_KEY_LEN_128 &&
	    keyconf->keylen != WEP_KEY_LEN_64) {
582
		IWL_DEBUG_WEP(priv, "Bad WEP key length %d\n", keyconf->keylen);
583 584 585
		return -EINVAL;
	}

586
	keyconf->flags &= ~IEEE80211_KEY_FLAG_GENERATE_IV;
587
	keyconf->hw_key_idx = HW_KEY_DEFAULT;
588 589 590 591 592
	priv->stations[IWL_AP_ID].keyinfo.alg = ALG_WEP;

	spin_lock_irqsave(&priv->sta_lock, flags);
	priv->default_wep_key++;

593
	if (test_and_set_bit(keyconf->keyidx, &priv->ucode_key_table))
594
		IWL_ERR(priv, "index %d already used in uCode key table.\n",
595 596
			keyconf->keyidx);

597 598 599 600 601
	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);
602
	IWL_DEBUG_WEP(priv, "Set default WEP key: len=%d idx=%d ret=%d\n",
603
		keyconf->keylen, keyconf->keyidx, ret);
604 605 606 607
	spin_unlock_irqrestore(&priv->sta_lock, flags);

	return ret;
}
608
EXPORT_SYMBOL(iwl_set_default_wep_key);
609

610
static int iwl_set_wep_dynamic_key_info(struct iwl_priv *priv,
611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626
				struct ieee80211_key_conf *keyconf,
				u8 sta_id)
{
	unsigned long flags;
	__le16 key_flags = 0;
	int ret;

	keyconf->flags &= ~IEEE80211_KEY_FLAG_GENERATE_IV;

	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;

627
	if (sta_id == priv->hw_params.bcast_sta_id)
628 629 630 631 632 633 634 635 636 637 638 639 640 641
		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);

642 643 644
	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 =
645
				 iwl_get_free_ucode_key_index(priv);
646 647
	/* else, we are overriding an existing key => no need to allocated room
	 * in uCode. */
648

649
	WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
J
Jiri Slaby 已提交
650
		"no space for a new key");
651

652
	priv->stations[sta_id].sta.key.key_flags = key_flags;
653 654 655
	priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
	priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;

656
	ret = iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
657 658 659 660 661

	spin_unlock_irqrestore(&priv->sta_lock, flags);

	return ret;
}
662 663 664 665 666 667 668

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;
669
	int ret;
670 671 672 673 674

	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;

675
	if (sta_id == priv->hw_params.bcast_sta_id)
676 677 678 679 680 681 682 683 684 685 686 687 688 689
		key_flags |= STA_KEY_MULTICAST_MSK;

	keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;

	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);

690 691 692 693 694 695 696
	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. */

697
	WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
J
Jiri Slaby 已提交
698
		"no space for a new key");
699

700 701 702 703
	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;

704 705
	ret = iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);

706 707
	spin_unlock_irqrestore(&priv->sta_lock, flags);

708
	return ret;
709 710 711 712 713 714 715 716
}

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;
717 718 719 720 721 722 723 724
	__le16 key_flags = 0;

	key_flags |= (STA_KEY_FLG_TKIP | 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;
725 726 727 728 729 730 731 732

	keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
	keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;

	spin_lock_irqsave(&priv->sta_lock, flags);

	priv->stations[sta_id].keyinfo.alg = keyconf->alg;
	priv->stations[sta_id].keyinfo.keylen = 16;
733 734 735 736

	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 =
737
				 iwl_get_free_ucode_key_index(priv);
738 739
	/* else, we are overriding an existing key => no need to allocated room
	 * in uCode. */
740

741
	WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
J
Jiri Slaby 已提交
742
		"no space for a new key");
743

744 745 746
	priv->stations[sta_id].sta.key.key_flags = key_flags;


747 748 749 750 751 752 753 754 755 756
	/* 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;
}

757 758 759 760 761 762 763 764
void iwl_update_tkip_key(struct iwl_priv *priv,
			struct ieee80211_key_conf *keyconf,
			const u8 *addr, u32 iv32, u16 *phase1key)
{
	u8 sta_id = IWL_INVALID_STATION;
	unsigned long flags;
	int i;

765
	sta_id = iwl_find_station(priv, addr);
766
	if (sta_id == IWL_INVALID_STATION) {
767
		IWL_DEBUG_MAC80211(priv, "leave - %pM not in station map.\n",
768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795
				   addr);
		return;
	}

	if (iwl_scan_cancel(priv)) {
		/* cancel scan failed, just live w/ bad key and rely
		   briefly on SW decryption */
		return;
	}

	spin_lock_irqsave(&priv->sta_lock, flags);

	priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;

	for (i = 0; i < 5; i++)
		priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
			cpu_to_le16(phase1key[i]);

	priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
	priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;

	iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);

	spin_unlock_irqrestore(&priv->sta_lock, flags);

}
EXPORT_SYMBOL(iwl_update_tkip_key);

796 797 798
int iwl_remove_dynamic_key(struct iwl_priv *priv,
				struct ieee80211_key_conf *keyconf,
				u8 sta_id)
799 800
{
	unsigned long flags;
801 802 803
	int ret = 0;
	u16 key_flags;
	u8 keyidx;
804

805
	priv->key_mapping_key--;
806 807

	spin_lock_irqsave(&priv->sta_lock, flags);
808 809 810
	key_flags = le16_to_cpu(priv->stations[sta_id].sta.key.key_flags);
	keyidx = (key_flags >> STA_KEY_FLG_KEYID_POS) & 0x3;

811
	IWL_DEBUG_WEP(priv, "Remove dynamic key: idx=%d sta=%d\n",
812 813
		      keyconf->keyidx, sta_id);

814 815 816 817 818 819 820 821 822 823
	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;
	}

824
	if (priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET) {
825
		IWL_WARN(priv, "Removing wrong key %d 0x%x\n",
826 827 828 829 830
			    keyconf->keyidx, key_flags);
		spin_unlock_irqrestore(&priv->sta_lock, flags);
		return 0;
	}

831 832
	if (!test_and_clear_bit(priv->stations[sta_id].sta.key.key_offset,
		&priv->ucode_key_table))
833
		IWL_ERR(priv, "index %d not used in uCode key table.\n",
834 835
			priv->stations[sta_id].sta.key.key_offset);
	memset(&priv->stations[sta_id].keyinfo, 0,
836
					sizeof(struct iwl_hw_key));
837 838
	memset(&priv->stations[sta_id].sta.key, 0,
					sizeof(struct iwl4965_keyinfo));
839 840 841
	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;
842 843 844
	priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
	priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;

845 846 847 848 849
	if (iwl_is_rfkill(priv)) {
		IWL_DEBUG_WEP(priv, "Not sending REPLY_ADD_STA command because RFKILL enabled. \n");
		spin_unlock_irqrestore(&priv->sta_lock, flags);
		return 0;
	}
850
	ret =  iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
851 852
	spin_unlock_irqrestore(&priv->sta_lock, flags);
	return ret;
853
}
854
EXPORT_SYMBOL(iwl_remove_dynamic_key);
855 856

int iwl_set_dynamic_key(struct iwl_priv *priv,
857
				struct ieee80211_key_conf *keyconf, u8 sta_id)
858 859 860
{
	int ret;

861 862
	priv->key_mapping_key++;
	keyconf->hw_key_idx = HW_KEY_DYNAMIC;
863

864
	switch (keyconf->alg) {
865
	case ALG_CCMP:
866
		ret = iwl_set_ccmp_dynamic_key_info(priv, keyconf, sta_id);
867 868
		break;
	case ALG_TKIP:
869
		ret = iwl_set_tkip_dynamic_key_info(priv, keyconf, sta_id);
870 871
		break;
	case ALG_WEP:
872
		ret = iwl_set_wep_dynamic_key_info(priv, keyconf, sta_id);
873 874
		break;
	default:
875 876
		IWL_ERR(priv,
			"Unknown alg: %s alg = %d\n", __func__, keyconf->alg);
877 878 879
		ret = -EINVAL;
	}

880
	IWL_DEBUG_WEP(priv, "Set dynamic key: alg= %d len=%d idx=%d sta=%d ret=%d\n",
881 882 883
		      keyconf->alg, keyconf->keylen, keyconf->keyidx,
		      sta_id, ret);

884 885
	return ret;
}
886
EXPORT_SYMBOL(iwl_set_dynamic_key);
887

888 889 890 891 892
#ifdef CONFIG_IWLWIFI_DEBUG
static void iwl_dump_lq_cmd(struct iwl_priv *priv,
			   struct iwl_link_quality_cmd *lq)
{
	int i;
893 894
	IWL_DEBUG_RATE(priv, "lq station id 0x%x\n", lq->sta_id);
	IWL_DEBUG_RATE(priv, "lq ant 0x%X 0x%X\n",
895 896 897 898
		       lq->general_params.single_stream_ant_msk,
		       lq->general_params.dual_stream_ant_msk);

	for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++)
899
		IWL_DEBUG_RATE(priv, "lq index %d 0x%X\n",
900 901 902 903 904 905 906 907 908 909 910 911 912 913 914
			       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),
915
		.flags = flags,
916 917 918 919
		.data = lq,
	};

	if ((lq->sta_id == 0xFF) &&
920
	    (priv->iw_mode == NL80211_IFTYPE_ADHOC))
921 922 923 924 925
		return -EINVAL;

	if (lq->sta_id == 0xFF)
		lq->sta_id = IWL_AP_ID;

926
	iwl_dump_lq_cmd(priv, lq);
927

928
	if (iwl_is_associated(priv) && priv->assoc_station_added)
929 930 931 932 933 934
		return  iwl_send_cmd(priv, &cmd);

	return 0;
}
EXPORT_SYMBOL(iwl_send_lq_cmd);

935 936 937 938 939 940 941
/**
 * iwl_sta_init_lq - Initialize a station's hardware rate table
 *
 * The uCode's station table contains a table of fallback rates
 * for automatic fallback during transmission.
 *
 * NOTE: This sets up a default set of values.  These will be replaced later
942
 *       if the driver's iwl-agn-rs rate scaling algorithm is used, instead of
943 944 945 946 947 948
 *       rc80211_simple.
 *
 * NOTE: Run REPLY_ADD_STA command to set up station table entry, before
 *       calling this function (which runs REPLY_TX_LINK_QUALITY_CMD,
 *       which requires station table entry to exist).
 */
949
static void iwl_sta_init_lq(struct iwl_priv *priv, const u8 *addr, bool is_ap)
950 951 952 953 954
{
	int i, r;
	struct iwl_link_quality_cmd link_cmd = {
		.reserved1 = 0,
	};
955
	u32 rate_flags;
956 957 958 959 960 961 962 963 964 965 966 967 968 969 970

	/* Set up the rate scaling to start at selected rate, fall back
	 * all the way down to 1M in IEEE order, and then spin on 1M */
	if (is_ap)
		r = IWL_RATE_54M_INDEX;
	else if (priv->band == IEEE80211_BAND_5GHZ)
		r = IWL_RATE_6M_INDEX;
	else
		r = IWL_RATE_1M_INDEX;

	for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) {
		rate_flags = 0;
		if (r >= IWL_FIRST_CCK_RATE && r <= IWL_LAST_CCK_RATE)
			rate_flags |= RATE_MCS_CCK_MSK;

971 972
		rate_flags |= first_antenna(priv->hw_params.valid_tx_ant) <<
				RATE_MCS_ANT_POS;
973 974

		link_cmd.rs_table[i].rate_n_flags =
975
			iwl_hw_set_rate_n_flags(iwl_rates[r].plcp, rate_flags);
976
		r = iwl_get_prev_ieee_rate(r);
977 978
	}

979 980
	link_cmd.general_params.single_stream_ant_msk =
				first_antenna(priv->hw_params.valid_tx_ant);
981
	link_cmd.general_params.dual_stream_ant_msk = 3;
982 983 984
	link_cmd.agg_params.agg_dis_start_th = LINK_QUAL_AGG_DISABLE_START_DEF;
	link_cmd.agg_params.agg_time_limit =
		cpu_to_le16(LINK_QUAL_AGG_TIME_LIMIT_DEF);
985 986 987 988 989 990 991

	/* Update the rate scaling for control frame Tx to AP */
	link_cmd.sta_id = is_ap ? IWL_AP_ID : priv->hw_params.bcast_sta_id;

	iwl_send_cmd_pdu_async(priv, REPLY_TX_LINK_QUALITY_CMD,
			       sizeof(link_cmd), &link_cmd, NULL);
}
992

993 994 995 996
/**
 * iwl_rxon_add_station - add station into station table.
 *
 * there is only one AP station with id= IWL_AP_ID
997
 * NOTE: mutex must be held before calling this function
998
 */
999
int iwl_rxon_add_station(struct iwl_priv *priv, const u8 *addr, bool is_ap)
1000
{
1001 1002 1003
	struct ieee80211_sta *sta;
	struct ieee80211_sta_ht_cap ht_config;
	struct ieee80211_sta_ht_cap *cur_ht_config = NULL;
1004 1005 1006
	u8 sta_id;

	/* Add station to device's station table */
1007 1008 1009 1010 1011 1012 1013 1014 1015

	/*
	 * XXX: This check is definitely not correct, if we're an AP
	 *	it'll always be false which is not what we want, but
	 *	it doesn't look like iwlagn is prepared to be an HT
	 *	AP anyway.
	 */
	if (priv->current_ht_config.is_ht) {
		rcu_read_lock();
1016
		sta = ieee80211_find_sta(priv->vif, addr);
1017 1018 1019 1020 1021 1022 1023
		if (sta) {
			memcpy(&ht_config, &sta->ht_cap, sizeof(ht_config));
			cur_ht_config = &ht_config;
		}
		rcu_read_unlock();
	}

1024
	sta_id = iwl_add_station(priv, addr, is_ap, CMD_SYNC, cur_ht_config);
1025 1026 1027 1028 1029 1030 1031 1032

	/* Set up default rate scaling table in device's station table */
	iwl_sta_init_lq(priv, addr, is_ap);

	return sta_id;
}
EXPORT_SYMBOL(iwl_rxon_add_station);

1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094
/**
 * iwl_sta_init_bcast_lq - Initialize a bcast station's hardware rate table
 *
 * NOTE: Run REPLY_ADD_STA command to set up station table entry, before
 *       calling this function (which runs REPLY_TX_LINK_QUALITY_CMD,
 *       which requires station table entry to exist).
 */
static void iwl_sta_init_bcast_lq(struct iwl_priv *priv)
{
	int i, r;
	struct iwl_link_quality_cmd link_cmd = {
		.reserved1 = 0,
	};
	u32 rate_flags;

	/* Set up the rate scaling to start at selected rate, fall back
	 * all the way down to 1M in IEEE order, and then spin on 1M */
	if (priv->band == IEEE80211_BAND_5GHZ)
		r = IWL_RATE_6M_INDEX;
	else
		r = IWL_RATE_1M_INDEX;

	for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) {
		rate_flags = 0;
		if (r >= IWL_FIRST_CCK_RATE && r <= IWL_LAST_CCK_RATE)
			rate_flags |= RATE_MCS_CCK_MSK;

		rate_flags |= first_antenna(priv->hw_params.valid_tx_ant) <<
				RATE_MCS_ANT_POS;

		link_cmd.rs_table[i].rate_n_flags =
			iwl_hw_set_rate_n_flags(iwl_rates[r].plcp, rate_flags);
		r = iwl_get_prev_ieee_rate(r);
	}

	link_cmd.general_params.single_stream_ant_msk =
				first_antenna(priv->hw_params.valid_tx_ant);
	link_cmd.general_params.dual_stream_ant_msk = 3;
	link_cmd.agg_params.agg_dis_start_th = LINK_QUAL_AGG_DISABLE_START_DEF;
	link_cmd.agg_params.agg_time_limit =
		cpu_to_le16(LINK_QUAL_AGG_TIME_LIMIT_DEF);

	/* Update the rate scaling for control frame Tx to AP */
	link_cmd.sta_id = priv->hw_params.bcast_sta_id;

	iwl_send_cmd_pdu_async(priv, REPLY_TX_LINK_QUALITY_CMD,
			       sizeof(link_cmd), &link_cmd, NULL);
}


/**
 * iwl_add_bcast_station - add broadcast station into station table.
 */
void iwl_add_bcast_station(struct iwl_priv *priv)
{
	iwl_add_station(priv, iwl_bcast_addr, false, CMD_SYNC, NULL);

	/* Set up default rate scaling table in device's station table */
	iwl_sta_init_bcast_lq(priv);
}
EXPORT_SYMBOL(iwl_add_bcast_station);

1095 1096 1097 1098 1099 1100 1101 1102
/**
 * iwl_get_sta_id - Find station's index within station table
 *
 * If new IBSS station, create new entry in station table
 */
int iwl_get_sta_id(struct iwl_priv *priv, struct ieee80211_hdr *hdr)
{
	int sta_id;
1103
	__le16 fc = hdr->frame_control;
1104 1105

	/* If this frame is broadcast or management, use broadcast station id */
1106
	if (!ieee80211_is_data(fc) ||  is_multicast_ether_addr(hdr->addr1))
1107 1108 1109 1110 1111 1112
		return priv->hw_params.bcast_sta_id;

	switch (priv->iw_mode) {

	/* If we are a client station in a BSS network, use the special
	 * AP station entry (that's the only station we communicate with) */
1113
	case NL80211_IFTYPE_STATION:
1114 1115 1116
		return IWL_AP_ID;

	/* If we are an AP, then find the station, or use BCAST */
1117
	case NL80211_IFTYPE_AP:
1118
		sta_id = iwl_find_station(priv, hdr->addr1);
1119 1120 1121 1122 1123 1124
		if (sta_id != IWL_INVALID_STATION)
			return sta_id;
		return priv->hw_params.bcast_sta_id;

	/* If this frame is going out to an IBSS network, find the station,
	 * or create a new station table entry */
1125
	case NL80211_IFTYPE_ADHOC:
1126
		sta_id = iwl_find_station(priv, hdr->addr1);
1127 1128 1129 1130
		if (sta_id != IWL_INVALID_STATION)
			return sta_id;

		/* Create new station table entry */
1131 1132
		sta_id = iwl_add_station(priv, hdr->addr1, false,
					CMD_ASYNC, NULL);
1133 1134 1135 1136

		if (sta_id != IWL_INVALID_STATION)
			return sta_id;

1137
		IWL_DEBUG_DROP(priv, "Station %pM not in station map. "
1138
			       "Defaulting to broadcast...\n",
1139
			       hdr->addr1);
1140
		iwl_print_hex_dump(priv, IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
1141 1142 1143
		return priv->hw_params.bcast_sta_id;

	default:
1144 1145
		IWL_WARN(priv, "Unknown mode of operation: %d\n",
			priv->iw_mode);
1146 1147 1148 1149 1150
		return priv->hw_params.bcast_sta_id;
	}
}
EXPORT_SYMBOL(iwl_get_sta_id);

1151
/**
1152
 * iwl_sta_tx_modify_enable_tid - Enable Tx for this TID in station table
1153
 */
1154
void iwl_sta_tx_modify_enable_tid(struct iwl_priv *priv, int sta_id, int tid)
1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166
{
	unsigned long flags;

	/* Remove "disable" flag, to enable Tx for this TID */
	spin_lock_irqsave(&priv->sta_lock, flags);
	priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_TID_DISABLE_TX;
	priv->stations[sta_id].sta.tid_disable_tx &= cpu_to_le16(~(1 << tid));
	priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
	spin_unlock_irqrestore(&priv->sta_lock, flags);

	iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
}
1167 1168 1169 1170 1171 1172 1173 1174
EXPORT_SYMBOL(iwl_sta_tx_modify_enable_tid);

int iwl_sta_rx_agg_start(struct iwl_priv *priv,
			 const u8 *addr, int tid, u16 ssn)
{
	unsigned long flags;
	int sta_id;

1175
	sta_id = iwl_find_station(priv, addr);
1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196
	if (sta_id == IWL_INVALID_STATION)
		return -ENXIO;

	spin_lock_irqsave(&priv->sta_lock, flags);
	priv->stations[sta_id].sta.station_flags_msk = 0;
	priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_ADDBA_TID_MSK;
	priv->stations[sta_id].sta.add_immediate_ba_tid = (u8)tid;
	priv->stations[sta_id].sta.add_immediate_ba_ssn = cpu_to_le16(ssn);
	priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
	spin_unlock_irqrestore(&priv->sta_lock, flags);

	return iwl_send_add_sta(priv, &priv->stations[sta_id].sta,
					CMD_ASYNC);
}
EXPORT_SYMBOL(iwl_sta_rx_agg_start);

int iwl_sta_rx_agg_stop(struct iwl_priv *priv, const u8 *addr, int tid)
{
	unsigned long flags;
	int sta_id;

1197
	sta_id = iwl_find_station(priv, addr);
1198 1199
	if (sta_id == IWL_INVALID_STATION) {
		IWL_ERR(priv, "Invalid station for AGG tid %d\n", tid);
1200
		return -ENXIO;
1201
	}
1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214

	spin_lock_irqsave(&priv->sta_lock, flags);
	priv->stations[sta_id].sta.station_flags_msk = 0;
	priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_DELBA_TID_MSK;
	priv->stations[sta_id].sta.remove_immediate_ba_tid = (u8)tid;
	priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
	spin_unlock_irqrestore(&priv->sta_lock, flags);

	return iwl_send_add_sta(priv, &priv->stations[sta_id].sta,
					CMD_ASYNC);
}
EXPORT_SYMBOL(iwl_sta_rx_agg_stop);

1215
void iwl_sta_modify_ps_wake(struct iwl_priv *priv, int sta_id)
1216 1217 1218 1219 1220 1221 1222
{
	unsigned long flags;

	spin_lock_irqsave(&priv->sta_lock, flags);
	priv->stations[sta_id].sta.station_flags &= ~STA_FLG_PWR_SAVE_MSK;
	priv->stations[sta_id].sta.station_flags_msk = STA_FLG_PWR_SAVE_MSK;
	priv->stations[sta_id].sta.sta.modify_mask = 0;
1223
	priv->stations[sta_id].sta.sleep_tx_count = 0;
1224 1225 1226 1227 1228
	priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
	spin_unlock_irqrestore(&priv->sta_lock, flags);

	iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
}
1229
EXPORT_SYMBOL(iwl_sta_modify_ps_wake);
1230

1231
void iwl_sta_modify_sleep_tx_count(struct iwl_priv *priv, int sta_id, int cnt)
1232
{
1233
	unsigned long flags;
1234

1235 1236 1237 1238 1239 1240 1241 1242
	spin_lock_irqsave(&priv->sta_lock, flags);
	priv->stations[sta_id].sta.station_flags |= STA_FLG_PWR_SAVE_MSK;
	priv->stations[sta_id].sta.station_flags_msk = STA_FLG_PWR_SAVE_MSK;
	priv->stations[sta_id].sta.sta.modify_mask =
					STA_MODIFY_SLEEP_TX_COUNT_MSK;
	priv->stations[sta_id].sta.sleep_tx_count = cpu_to_le16(cnt);
	priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
	spin_unlock_irqrestore(&priv->sta_lock, flags);
1243

1244
	iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
1245
}
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