sta_ioctl.c 40.8 KB
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/*
 * Marvell Wireless LAN device driver: functions for station ioctl
 *
 * Copyright (C) 2011, Marvell International Ltd.
 *
 * This software file (the "File") is distributed by Marvell International
 * Ltd. under the terms of the GNU General Public License Version 2, June 1991
 * (the "License").  You may use, redistribute and/or modify this File in
 * accordance with the terms and conditions of the License, a copy of which
 * is available by writing to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
 * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
 *
 * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
 * ARE EXPRESSLY DISCLAIMED.  The License provides additional details about
 * this warranty disclaimer.
 */

#include "decl.h"
#include "ioctl.h"
#include "util.h"
#include "fw.h"
#include "main.h"
#include "wmm.h"
#include "11n.h"
#include "cfg80211.h"

/*
 * Copies the multicast address list from device to driver.
 *
 * This function does not validate the destination memory for
 * size, and the calling function must ensure enough memory is
 * available.
 */
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int mwifiex_copy_mcast_addr(struct mwifiex_multicast_list *mlist,
			    struct net_device *dev)
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{
	int i = 0;
	struct netdev_hw_addr *ha;

	netdev_for_each_mc_addr(ha, dev)
		memcpy(&mlist->mac_list[i++], ha->addr, ETH_ALEN);

	return i;
}

/*
 * Wait queue completion handler.
 *
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 * This function waits on a cmd wait queue. It also cancels the pending
 * request after waking up, in case of errors.
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 */
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int mwifiex_wait_queue_complete(struct mwifiex_adapter *adapter)
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{
	bool cancel_flag = false;
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	int status;
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	struct cmd_ctrl_node *cmd_queued;
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	if (!adapter->cmd_queued)
		return 0;

	cmd_queued = adapter->cmd_queued;
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	adapter->cmd_queued = NULL;
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	dev_dbg(adapter->dev, "cmd pending\n");
	atomic_inc(&adapter->cmd_pending);
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	/* Status pending, wake up main process */
	queue_work(adapter->workqueue, &adapter->main_work);
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	/* Wait for completion */
	wait_event_interruptible(adapter->cmd_wait_q.wait,
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				 *(cmd_queued->condition));
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	if (!*(cmd_queued->condition))
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		cancel_flag = true;
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	if (cancel_flag) {
		mwifiex_cancel_pending_ioctl(adapter);
		dev_dbg(adapter->dev, "cmd cancel\n");
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	}
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	status = adapter->cmd_wait_q.status;
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	adapter->cmd_wait_q.status = 0;
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	return status;
}

/*
 * This function prepares the correct firmware command and
 * issues it to set the multicast list.
 *
 * This function can be used to enable promiscuous mode, or enable all
 * multicast packets, or to enable selective multicast.
 */
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int mwifiex_request_set_multicast_list(struct mwifiex_private *priv,
				struct mwifiex_multicast_list *mcast_list)
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{
	int ret = 0;
	u16 old_pkt_filter;

	old_pkt_filter = priv->curr_pkt_filter;

	if (mcast_list->mode == MWIFIEX_PROMISC_MODE) {
		dev_dbg(priv->adapter->dev, "info: Enable Promiscuous mode\n");
		priv->curr_pkt_filter |= HostCmd_ACT_MAC_PROMISCUOUS_ENABLE;
		priv->curr_pkt_filter &=
			~HostCmd_ACT_MAC_ALL_MULTICAST_ENABLE;
	} else {
		/* Multicast */
		priv->curr_pkt_filter &= ~HostCmd_ACT_MAC_PROMISCUOUS_ENABLE;
		if (mcast_list->mode == MWIFIEX_MULTICAST_MODE) {
			dev_dbg(priv->adapter->dev,
				"info: Enabling All Multicast!\n");
			priv->curr_pkt_filter |=
				HostCmd_ACT_MAC_ALL_MULTICAST_ENABLE;
		} else {
			priv->curr_pkt_filter &=
				~HostCmd_ACT_MAC_ALL_MULTICAST_ENABLE;
			if (mcast_list->num_multicast_addr) {
				dev_dbg(priv->adapter->dev,
					"info: Set multicast list=%d\n",
				       mcast_list->num_multicast_addr);
				/* Set multicast addresses to firmware */
				if (old_pkt_filter == priv->curr_pkt_filter) {
					/* Send request to firmware */
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					ret = mwifiex_send_cmd_async(priv,
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						HostCmd_CMD_MAC_MULTICAST_ADR,
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						HostCmd_ACT_GEN_SET, 0,
						mcast_list);
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				} else {
					/* Send request to firmware */
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					ret = mwifiex_send_cmd_async(priv,
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						HostCmd_CMD_MAC_MULTICAST_ADR,
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						HostCmd_ACT_GEN_SET, 0,
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						mcast_list);
				}
			}
		}
	}
	dev_dbg(priv->adapter->dev,
		"info: old_pkt_filter=%#x, curr_pkt_filter=%#x\n",
	       old_pkt_filter, priv->curr_pkt_filter);
	if (old_pkt_filter != priv->curr_pkt_filter) {
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		ret = mwifiex_send_cmd_async(priv, HostCmd_CMD_MAC_CONTROL,
					     HostCmd_ACT_GEN_SET,
					     0, &priv->curr_pkt_filter);
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	}

	return ret;
}

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/*
 * This function fills bss descriptor structure using provided
 * information.
 */
int mwifiex_fill_new_bss_desc(struct mwifiex_private *priv,
			      u8 *bssid, s32 rssi, u8 *ie_buf,
			      size_t ie_len, u16 beacon_period,
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			      u16 cap_info_bitmap, u8 band,
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			      struct mwifiex_bssdescriptor *bss_desc)
{
	int ret;

	memcpy(bss_desc->mac_address, bssid, ETH_ALEN);
	bss_desc->rssi = rssi;
	bss_desc->beacon_buf = ie_buf;
	bss_desc->beacon_buf_size = ie_len;
	bss_desc->beacon_period = beacon_period;
	bss_desc->cap_info_bitmap = cap_info_bitmap;
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	bss_desc->bss_band = band;
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	if (bss_desc->cap_info_bitmap & WLAN_CAPABILITY_PRIVACY) {
		dev_dbg(priv->adapter->dev, "info: InterpretIE: AP WEP enabled\n");
		bss_desc->privacy = MWIFIEX_802_11_PRIV_FILTER_8021X_WEP;
	} else {
		bss_desc->privacy = MWIFIEX_802_11_PRIV_FILTER_ACCEPT_ALL;
	}
	if (bss_desc->cap_info_bitmap & WLAN_CAPABILITY_IBSS)
		bss_desc->bss_mode = NL80211_IFTYPE_ADHOC;
	else
		bss_desc->bss_mode = NL80211_IFTYPE_STATION;

	ret = mwifiex_update_bss_desc_with_ie(priv->adapter, bss_desc,
					      ie_buf, ie_len);

	return ret;
}

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/*
 * In Ad-Hoc mode, the IBSS is created if not found in scan list.
 * In both Ad-Hoc and infra mode, an deauthentication is performed
 * first.
 */
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int mwifiex_bss_start(struct mwifiex_private *priv, struct cfg80211_bss *bss,
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		      struct cfg80211_ssid *req_ssid)
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{
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	int ret;
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	struct mwifiex_adapter *adapter = priv->adapter;
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	struct mwifiex_bssdescriptor *bss_desc = NULL;
	u8 *beacon_ie = NULL;
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	priv->scan_block = false;
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	if (bss) {
		/* Allocate and fill new bss descriptor */
		bss_desc = kzalloc(sizeof(struct mwifiex_bssdescriptor),
				GFP_KERNEL);
		if (!bss_desc) {
			dev_err(priv->adapter->dev, " failed to alloc bss_desc\n");
			return -ENOMEM;
		}
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		beacon_ie = kmemdup(bss->information_elements,
					bss->len_beacon_ies, GFP_KERNEL);
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		if (!beacon_ie) {
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			kfree(bss_desc);
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			dev_err(priv->adapter->dev, " failed to alloc beacon_ie\n");
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			return -ENOMEM;
		}
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		ret = mwifiex_fill_new_bss_desc(priv, bss->bssid, bss->signal,
						beacon_ie, bss->len_beacon_ies,
						bss->beacon_interval,
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						bss->capability,
						*(u8 *)bss->priv, bss_desc);
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		if (ret)
			goto done;
	}
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	if (priv->bss_mode == NL80211_IFTYPE_STATION) {
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		/* Infra mode */
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		ret = mwifiex_deauthenticate(priv, NULL);
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		if (ret)
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			goto done;

		ret = mwifiex_check_network_compatibility(priv, bss_desc);
		if (ret)
			goto done;
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		dev_dbg(adapter->dev, "info: SSID found in scan list ... "
				      "associating...\n");

		if (!netif_queue_stopped(priv->netdev))
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			mwifiex_stop_net_dev_queue(priv->netdev, adapter);
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		if (netif_carrier_ok(priv->netdev))
			netif_carrier_off(priv->netdev);
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		/* Clear any past association response stored for
		 * application retrieval */
		priv->assoc_rsp_size = 0;
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		ret = mwifiex_associate(priv, bss_desc);
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		/* If auth type is auto and association fails using open mode,
		 * try to connect using shared mode */
		if (ret == WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG &&
		    priv->sec_info.is_authtype_auto &&
		    priv->sec_info.wep_enabled) {
			priv->sec_info.authentication_mode =
						NL80211_AUTHTYPE_SHARED_KEY;
			ret = mwifiex_associate(priv, bss_desc);
		}

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		if (bss)
			cfg80211_put_bss(bss);
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	} else {
		/* Adhoc mode */
		/* If the requested SSID matches current SSID, return */
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		if (bss_desc && bss_desc->ssid.ssid_len &&
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		    (!mwifiex_ssid_cmp(&priv->curr_bss_params.bss_descriptor.
				       ssid, &bss_desc->ssid))) {
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			kfree(bss_desc);
			kfree(beacon_ie);
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			return 0;
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		}
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		/* Exit Adhoc mode first */
		dev_dbg(adapter->dev, "info: Sending Adhoc Stop\n");
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		ret = mwifiex_deauthenticate(priv, NULL);
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		if (ret)
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			goto done;
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		priv->adhoc_is_link_sensed = false;

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		ret = mwifiex_check_network_compatibility(priv, bss_desc);

		if (!netif_queue_stopped(priv->netdev))
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			mwifiex_stop_net_dev_queue(priv->netdev, adapter);
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		if (netif_carrier_ok(priv->netdev))
			netif_carrier_off(priv->netdev);
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		if (!ret) {
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			dev_dbg(adapter->dev, "info: network found in scan"
							" list. Joining...\n");
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			ret = mwifiex_adhoc_join(priv, bss_desc);
			if (bss)
				cfg80211_put_bss(bss);
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		} else {
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			dev_dbg(adapter->dev, "info: Network not found in "
				"the list, creating adhoc with ssid = %s\n",
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				req_ssid->ssid);
			ret = mwifiex_adhoc_start(priv, req_ssid);
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		}
	}

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done:
	kfree(bss_desc);
	kfree(beacon_ie);
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	return ret;
}

/*
 * IOCTL request handler to set host sleep configuration.
 *
 * This function prepares the correct firmware command and
 * issues it.
 */
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static int mwifiex_set_hs_params(struct mwifiex_private *priv, u16 action,
				 int cmd_type, struct mwifiex_ds_hs_cfg *hs_cfg)
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{
	struct mwifiex_adapter *adapter = priv->adapter;
	int status = 0;
	u32 prev_cond = 0;

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	if (!hs_cfg)
		return -ENOMEM;

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	switch (action) {
	case HostCmd_ACT_GEN_SET:
		if (adapter->pps_uapsd_mode) {
			dev_dbg(adapter->dev, "info: Host Sleep IOCTL"
				" is blocked in UAPSD/PPS mode\n");
			status = -1;
			break;
		}
		if (hs_cfg->is_invoke_hostcmd) {
			if (hs_cfg->conditions == HOST_SLEEP_CFG_CANCEL) {
				if (!adapter->is_hs_configured)
					/* Already cancelled */
					break;
				/* Save previous condition */
				prev_cond = le32_to_cpu(adapter->hs_cfg
							.conditions);
				adapter->hs_cfg.conditions =
						cpu_to_le32(hs_cfg->conditions);
			} else if (hs_cfg->conditions) {
				adapter->hs_cfg.conditions =
						cpu_to_le32(hs_cfg->conditions);
				adapter->hs_cfg.gpio = (u8)hs_cfg->gpio;
				if (hs_cfg->gap)
					adapter->hs_cfg.gap = (u8)hs_cfg->gap;
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			} else if (adapter->hs_cfg.conditions
				   == cpu_to_le32(HOST_SLEEP_CFG_CANCEL)) {
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				/* Return failure if no parameters for HS
				   enable */
				status = -1;
				break;
			}
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			if (cmd_type == MWIFIEX_SYNC_CMD)
				status = mwifiex_send_cmd_sync(priv,
						HostCmd_CMD_802_11_HS_CFG_ENH,
						HostCmd_ACT_GEN_SET, 0,
						&adapter->hs_cfg);
			else
				status = mwifiex_send_cmd_async(priv,
						HostCmd_CMD_802_11_HS_CFG_ENH,
						HostCmd_ACT_GEN_SET, 0,
						&adapter->hs_cfg);
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			if (hs_cfg->conditions == HOST_SLEEP_CFG_CANCEL)
				/* Restore previous condition */
				adapter->hs_cfg.conditions =
						cpu_to_le32(prev_cond);
		} else {
			adapter->hs_cfg.conditions =
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						cpu_to_le32(hs_cfg->conditions);
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			adapter->hs_cfg.gpio = (u8)hs_cfg->gpio;
			adapter->hs_cfg.gap = (u8)hs_cfg->gap;
		}
		break;
	case HostCmd_ACT_GEN_GET:
		hs_cfg->conditions = le32_to_cpu(adapter->hs_cfg.conditions);
		hs_cfg->gpio = adapter->hs_cfg.gpio;
		hs_cfg->gap = adapter->hs_cfg.gap;
		break;
	default:
		status = -1;
		break;
	}

	return status;
}

/*
 * Sends IOCTL request to cancel the existing Host Sleep configuration.
 *
 * This function allocates the IOCTL request buffer, fills it
 * with requisite parameters and calls the IOCTL handler.
 */
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int mwifiex_cancel_hs(struct mwifiex_private *priv, int cmd_type)
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{
	struct mwifiex_ds_hs_cfg hscfg;

	hscfg.conditions = HOST_SLEEP_CFG_CANCEL;
	hscfg.is_invoke_hostcmd = true;

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	return mwifiex_set_hs_params(priv, HostCmd_ACT_GEN_SET,
				    cmd_type, &hscfg);
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}
EXPORT_SYMBOL_GPL(mwifiex_cancel_hs);

/*
 * Sends IOCTL request to cancel the existing Host Sleep configuration.
 *
 * This function allocates the IOCTL request buffer, fills it
 * with requisite parameters and calls the IOCTL handler.
 */
int mwifiex_enable_hs(struct mwifiex_adapter *adapter)
{
	struct mwifiex_ds_hs_cfg hscfg;

	if (adapter->hs_activated) {
		dev_dbg(adapter->dev, "cmd: HS Already actived\n");
		return true;
	}

	adapter->hs_activate_wait_q_woken = false;

	memset(&hscfg, 0, sizeof(struct mwifiex_hs_config_param));
	hscfg.is_invoke_hostcmd = true;

	if (mwifiex_set_hs_params(mwifiex_get_priv(adapter,
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						   MWIFIEX_BSS_ROLE_STA),
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				  HostCmd_ACT_GEN_SET, MWIFIEX_SYNC_CMD,
				  &hscfg)) {
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		dev_err(adapter->dev, "IOCTL request HS enable failed\n");
		return false;
	}

	wait_event_interruptible(adapter->hs_activate_wait_q,
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				 adapter->hs_activate_wait_q_woken);
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	return true;
}
EXPORT_SYMBOL_GPL(mwifiex_enable_hs);

/*
 * IOCTL request handler to get BSS information.
 *
 * This function collates the information from different driver structures
 * to send to the user.
 */
int mwifiex_get_bss_info(struct mwifiex_private *priv,
			 struct mwifiex_bss_info *info)
{
	struct mwifiex_adapter *adapter = priv->adapter;
	struct mwifiex_bssdescriptor *bss_desc;

	if (!info)
		return -1;

	bss_desc = &priv->curr_bss_params.bss_descriptor;

	info->bss_mode = priv->bss_mode;

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	memcpy(&info->ssid, &bss_desc->ssid, sizeof(struct cfg80211_ssid));
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	memcpy(&info->bssid, &bss_desc->mac_address, ETH_ALEN);

	info->bss_chan = bss_desc->channel;

	info->region_code = adapter->region_code;

	info->media_connected = priv->media_connected;

	info->max_power_level = priv->max_tx_power_level;
	info->min_power_level = priv->min_tx_power_level;

	info->adhoc_state = priv->adhoc_state;

	info->bcn_nf_last = priv->bcn_nf_last;

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	if (priv->sec_info.wep_enabled)
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		info->wep_status = true;
	else
		info->wep_status = false;

	info->is_hs_configured = adapter->is_hs_configured;
	info->is_deep_sleep = adapter->is_deep_sleep;

	return 0;
}

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/*
 * The function disables auto deep sleep mode.
 */
int mwifiex_disable_auto_ds(struct mwifiex_private *priv)
{
	struct mwifiex_ds_auto_ds auto_ds;

	auto_ds.auto_ds = DEEP_SLEEP_OFF;

	return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_PS_MODE_ENH,
				     DIS_AUTO_PS, BITMAP_AUTO_DS, &auto_ds);
}
EXPORT_SYMBOL_GPL(mwifiex_disable_auto_ds);

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/*
 * IOCTL request handler to set/get active channel.
 *
 * This function performs validity checking on channel/frequency
 * compatibility and returns failure if not valid.
 */
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int mwifiex_bss_set_channel(struct mwifiex_private *priv,
			    struct mwifiex_chan_freq_power *chan)
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{
	struct mwifiex_adapter *adapter = priv->adapter;
	struct mwifiex_chan_freq_power *cfp = NULL;

	if (!chan)
		return -1;

	if (!chan->channel && !chan->freq)
		return -1;
	if (adapter->adhoc_start_band & BAND_AN)
		adapter->adhoc_start_band = BAND_G | BAND_B | BAND_GN;
	else if (adapter->adhoc_start_band & BAND_A)
		adapter->adhoc_start_band = BAND_G | BAND_B;
	if (chan->channel) {
		if (chan->channel <= MAX_CHANNEL_BAND_BG)
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			cfp = mwifiex_get_cfp(priv, 0, (u16) chan->channel, 0);
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		if (!cfp) {
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			cfp = mwifiex_get_cfp(priv, BAND_A,
					      (u16) chan->channel, 0);
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			if (cfp) {
				if (adapter->adhoc_11n_enabled)
					adapter->adhoc_start_band = BAND_A
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								    | BAND_AN;
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				else
					adapter->adhoc_start_band = BAND_A;
			}
		}
	} else {
		if (chan->freq <= MAX_FREQUENCY_BAND_BG)
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			cfp = mwifiex_get_cfp(priv, 0, 0, chan->freq);
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		if (!cfp) {
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			cfp = mwifiex_get_cfp(priv, BAND_A, 0, chan->freq);
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			if (cfp) {
				if (adapter->adhoc_11n_enabled)
					adapter->adhoc_start_band = BAND_A
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								    | BAND_AN;
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
				else
					adapter->adhoc_start_band = BAND_A;
			}
		}
	}
	if (!cfp || !cfp->channel) {
		dev_err(adapter->dev, "invalid channel/freq\n");
		return -1;
	}
	priv->adhoc_channel = (u8) cfp->channel;
	chan->channel = cfp->channel;
	chan->freq = cfp->freq;

	return 0;
}

/*
 * IOCTL request handler to set/get Ad-Hoc channel.
 *
 * This function prepares the correct firmware command and
 * issues it to set or get the ad-hoc channel.
 */
static int mwifiex_bss_ioctl_ibss_channel(struct mwifiex_private *priv,
					  u16 action, u16 *channel)
{
	if (action == HostCmd_ACT_GEN_GET) {
		if (!priv->media_connected) {
			*channel = priv->adhoc_channel;
579
			return 0;
580
581
582
583
584
		}
	} else {
		priv->adhoc_channel = (u8) *channel;
	}

585
	return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_RF_CHANNEL,
586
				     action, 0, channel);
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
}

/*
 * IOCTL request handler to change Ad-Hoc channel.
 *
 * This function allocates the IOCTL request buffer, fills it
 * with requisite parameters and calls the IOCTL handler.
 *
 * The function follows the following steps to perform the change -
 *      - Get current IBSS information
 *      - Get current channel
 *      - If no change is required, return
 *      - If not connected, change channel and return
 *      - If connected,
 *          - Disconnect
 *          - Change channel
 *          - Perform specific SSID scan with same SSID
 *          - Start/Join the IBSS
 */
int
607
mwifiex_drv_change_adhoc_chan(struct mwifiex_private *priv, u16 channel)
608
{
609
	int ret;
610
611
612
	struct mwifiex_bss_info bss_info;
	struct mwifiex_ssid_bssid ssid_bssid;
	u16 curr_chan = 0;
613
614
	struct cfg80211_bss *bss = NULL;
	struct ieee80211_channel *chan;
615
	enum ieee80211_band band;
616
617
618
619
620
621
622
623

	memset(&bss_info, 0, sizeof(bss_info));

	/* Get BSS information */
	if (mwifiex_get_bss_info(priv, &bss_info))
		return -1;

	/* Get current channel */
624
625
	ret = mwifiex_bss_ioctl_ibss_channel(priv, HostCmd_ACT_GEN_GET,
					     &curr_chan);
626
627
628
629
630
631

	if (curr_chan == channel) {
		ret = 0;
		goto done;
	}
	dev_dbg(priv->adapter->dev, "cmd: updating channel from %d to %d\n",
632
		curr_chan, channel);
633
634
635
636
637
638
639
640

	if (!bss_info.media_connected) {
		ret = 0;
		goto done;
	}

	/* Do disonnect */
	memset(&ssid_bssid, 0, ETH_ALEN);
641
	ret = mwifiex_deauthenticate(priv, ssid_bssid.bssid);
642

643
	ret = mwifiex_bss_ioctl_ibss_channel(priv, HostCmd_ACT_GEN_SET,
644
					     &channel);
645
646

	/* Do specific SSID scanning */
647
	if (mwifiex_request_scan(priv, &bss_info.ssid)) {
648
649
650
651
		ret = -1;
		goto done;
	}

652
	band = mwifiex_band_to_radio_type(priv->curr_bss_params.band);
653
	chan = __ieee80211_get_channel(priv->wdev->wiphy,
654
655
				       ieee80211_channel_to_frequency(channel,
								      band));
656
657
658
659
660
661
662

	/* Find the BSS we want using available scan results */
	bss = cfg80211_get_bss(priv->wdev->wiphy, chan, bss_info.bssid,
			       bss_info.ssid.ssid, bss_info.ssid.ssid_len,
			       WLAN_CAPABILITY_ESS, WLAN_CAPABILITY_ESS);
	if (!bss)
		wiphy_warn(priv->wdev->wiphy, "assoc: bss %pM not in scan results\n",
663
			   bss_info.bssid);
664
665

	ret = mwifiex_bss_start(priv, bss, &bss_info.ssid);
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
done:
	return ret;
}

/*
 * IOCTL request handler to get rate.
 *
 * This function prepares the correct firmware command and
 * issues it to get the current rate if it is connected,
 * otherwise, the function returns the lowest supported rate
 * for the band.
 */
static int mwifiex_rate_ioctl_get_rate_value(struct mwifiex_private *priv,
					     struct mwifiex_rate_cfg *rate_cfg)
{
	rate_cfg->is_rate_auto = priv->is_data_rate_auto;
682
683
	return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_TX_RATE_QUERY,
				     HostCmd_ACT_GEN_GET, 0, NULL);
684
685
686
687
688
689
690
691
692
693
694
695
696
697
}

/*
 * IOCTL request handler to set rate.
 *
 * This function prepares the correct firmware command and
 * issues it to set the current rate.
 *
 * The function also performs validation checking on the supplied value.
 */
static int mwifiex_rate_ioctl_set_rate_value(struct mwifiex_private *priv,
					     struct mwifiex_rate_cfg *rate_cfg)
{
	u8 rates[MWIFIEX_SUPPORTED_RATES];
698
699
	u8 *rate;
	int rate_index, ret;
700
	u16 bitmap_rates[MAX_BITMAP_RATES_SIZE];
701
	u32 i;
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
	struct mwifiex_adapter *adapter = priv->adapter;

	if (rate_cfg->is_rate_auto) {
		memset(bitmap_rates, 0, sizeof(bitmap_rates));
		/* Support all HR/DSSS rates */
		bitmap_rates[0] = 0x000F;
		/* Support all OFDM rates */
		bitmap_rates[1] = 0x00FF;
		/* Support all HT-MCSs rate */
		for (i = 0; i < ARRAY_SIZE(priv->bitmap_rates) - 3; i++)
			bitmap_rates[i + 2] = 0xFFFF;
		bitmap_rates[9] = 0x3FFF;
	} else {
		memset(rates, 0, sizeof(rates));
		mwifiex_get_active_data_rates(priv, rates);
		rate = rates;
		for (i = 0; (rate[i] && i < MWIFIEX_SUPPORTED_RATES); i++) {
			dev_dbg(adapter->dev, "info: rate=%#x wanted=%#x\n",
				rate[i], rate_cfg->rate);
			if ((rate[i] & 0x7f) == (rate_cfg->rate & 0x7f))
				break;
		}
724
		if ((i == MWIFIEX_SUPPORTED_RATES) || !rate[i]) {
725
726
727
728
729
730
			dev_err(adapter->dev, "fixed data rate %#x is out "
			       "of range\n", rate_cfg->rate);
			return -1;
		}
		memset(bitmap_rates, 0, sizeof(bitmap_rates));

731
		rate_index = mwifiex_data_rate_to_index(rate_cfg->rate);
732
733
734
735
736
737
738
739
740
741
742
743
744
745

		/* Only allow b/g rates to be set */
		if (rate_index >= MWIFIEX_RATE_INDEX_HRDSSS0 &&
		    rate_index <= MWIFIEX_RATE_INDEX_HRDSSS3) {
			bitmap_rates[0] = 1 << rate_index;
		} else {
			rate_index -= 1; /* There is a 0x00 in the table */
			if (rate_index >= MWIFIEX_RATE_INDEX_OFDM0 &&
			    rate_index <= MWIFIEX_RATE_INDEX_OFDM7)
				bitmap_rates[1] = 1 << (rate_index -
						   MWIFIEX_RATE_INDEX_OFDM0);
		}
	}

746
747
	ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_TX_RATE_CFG,
				    HostCmd_ACT_GEN_SET, 0, bitmap_rates);
748
749
750
751
752
753
754
755
756
757
758
759
760

	return ret;
}

/*
 * IOCTL request handler to set/get rate.
 *
 * This function can be used to set/get either the rate value or the
 * rate index.
 */
static int mwifiex_rate_ioctl_cfg(struct mwifiex_private *priv,
				  struct mwifiex_rate_cfg *rate_cfg)
{
761
	int status;
762
763
764
765
766

	if (!rate_cfg)
		return -1;

	if (rate_cfg->action == HostCmd_ACT_GEN_GET)
767
		status = mwifiex_rate_ioctl_get_rate_value(priv, rate_cfg);
768
	else
769
		status = mwifiex_rate_ioctl_set_rate_value(priv, rate_cfg);
770
771
772
773
774
775
776
777
778
779
780
781
782

	return status;
}

/*
 * Sends IOCTL request to get the data rate.
 *
 * This function allocates the IOCTL request buffer, fills it
 * with requisite parameters and calls the IOCTL handler.
 */
int mwifiex_drv_get_data_rate(struct mwifiex_private *priv,
			      struct mwifiex_rate_cfg *rate)
{
783
	int ret;
784
785
786

	memset(rate, 0, sizeof(struct mwifiex_rate_cfg));
	rate->action = HostCmd_ACT_GEN_GET;
787
	ret = mwifiex_rate_ioctl_cfg(priv, rate);
788
789

	if (!ret) {
790
		if (rate->is_rate_auto)
791
			rate->rate = mwifiex_index_to_data_rate(priv,
792
793
794
								priv->tx_rate,
								priv->tx_htinfo
								);
795
		else
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
			rate->rate = priv->data_rate;
	} else {
		ret = -1;
	}

	return ret;
}

/*
 * IOCTL request handler to set tx power configuration.
 *
 * This function prepares the correct firmware command and
 * issues it.
 *
 * For non-auto power mode, all the following power groups are set -
 *      - Modulation class HR/DSSS
 *      - Modulation class OFDM
 *      - Modulation class HTBW20
 *      - Modulation class HTBW40
 */
816
817
int mwifiex_set_tx_power(struct mwifiex_private *priv,
			 struct mwifiex_power_cfg *power_cfg)
818
{
819
820
821
822
823
	int ret;
	struct host_cmd_ds_txpwr_cfg *txp_cfg;
	struct mwifiex_types_power_group *pg_tlv;
	struct mwifiex_power_group *pg;
	u8 *buf;
824
825
826
827
828
829
830
	u16 dbm = 0;

	if (!power_cfg->is_power_auto) {
		dbm = (u16) power_cfg->power_level;
		if ((dbm < priv->min_tx_power_level) ||
		    (dbm > priv->max_tx_power_level)) {
			dev_err(priv->adapter->dev, "txpower value %d dBm"
831
832
833
				" is out of range (%d dBm-%d dBm)\n",
				dbm, priv->min_tx_power_level,
				priv->max_tx_power_level);
834
835
836
837
838
839
			return -1;
		}
	}
	buf = kzalloc(MWIFIEX_SIZE_OF_CMD_BUFFER, GFP_KERNEL);
	if (!buf) {
		dev_err(priv->adapter->dev, "%s: failed to alloc cmd buffer\n",
840
			__func__);
841
		return -ENOMEM;
842
843
844
845
846
847
	}

	txp_cfg = (struct host_cmd_ds_txpwr_cfg *) buf;
	txp_cfg->action = cpu_to_le16(HostCmd_ACT_GEN_SET);
	if (!power_cfg->is_power_auto) {
		txp_cfg->mode = cpu_to_le32(1);
848
849
		pg_tlv = (struct mwifiex_types_power_group *)
			 (buf + sizeof(struct host_cmd_ds_txpwr_cfg));
850
851
		pg_tlv->type = TLV_TYPE_POWER_GROUP;
		pg_tlv->length = 4 * sizeof(struct mwifiex_power_group);
852
853
854
		pg = (struct mwifiex_power_group *)
		     (buf + sizeof(struct host_cmd_ds_txpwr_cfg)
		      + sizeof(struct mwifiex_types_power_group));
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
		/* Power group for modulation class HR/DSSS */
		pg->first_rate_code = 0x00;
		pg->last_rate_code = 0x03;
		pg->modulation_class = MOD_CLASS_HR_DSSS;
		pg->power_step = 0;
		pg->power_min = (s8) dbm;
		pg->power_max = (s8) dbm;
		pg++;
		/* Power group for modulation class OFDM */
		pg->first_rate_code = 0x00;
		pg->last_rate_code = 0x07;
		pg->modulation_class = MOD_CLASS_OFDM;
		pg->power_step = 0;
		pg->power_min = (s8) dbm;
		pg->power_max = (s8) dbm;
		pg++;
		/* Power group for modulation class HTBW20 */
		pg->first_rate_code = 0x00;
		pg->last_rate_code = 0x20;
		pg->modulation_class = MOD_CLASS_HT;
		pg->power_step = 0;
		pg->power_min = (s8) dbm;
		pg->power_max = (s8) dbm;
		pg->ht_bandwidth = HT_BW_20;
		pg++;
		/* Power group for modulation class HTBW40 */
		pg->first_rate_code = 0x00;
		pg->last_rate_code = 0x20;
		pg->modulation_class = MOD_CLASS_HT;
		pg->power_step = 0;
		pg->power_min = (s8) dbm;
		pg->power_max = (s8) dbm;
		pg->ht_bandwidth = HT_BW_40;
	}
889
890
	ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_TXPWR_CFG,
				    HostCmd_ACT_GEN_SET, 0, buf);
891

892
	kfree(buf);
893
894
895
896
897
898
899
900
901
	return ret;
}

/*
 * IOCTL request handler to get power save mode.
 *
 * This function prepares the correct firmware command and
 * issues it.
 */
902
int mwifiex_drv_set_power(struct mwifiex_private *priv, u32 *ps_mode)
903
{
904
	int ret;
905
906
907
	struct mwifiex_adapter *adapter = priv->adapter;
	u16 sub_cmd;

908
909
910
911
912
913
914
915
916
	if (*ps_mode)
		adapter->ps_mode = MWIFIEX_802_11_POWER_MODE_PSP;
	else
		adapter->ps_mode = MWIFIEX_802_11_POWER_MODE_CAM;
	sub_cmd = (*ps_mode) ? EN_AUTO_PS : DIS_AUTO_PS;
	ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_PS_MODE_ENH,
				    sub_cmd, BITMAP_STA_PS, NULL);
	if ((!ret) && (sub_cmd == DIS_AUTO_PS))
		ret = mwifiex_send_cmd_async(priv,
917
918
					     HostCmd_CMD_802_11_PS_MODE_ENH,
					     GET_PS, 0, NULL);
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941

	return ret;
}

/*
 * IOCTL request handler to set/reset WPA IE.
 *
 * The supplied WPA IE is treated as a opaque buffer. Only the first field
 * is checked to determine WPA version. If buffer length is zero, the existing
 * WPA IE is reset.
 */
static int mwifiex_set_wpa_ie_helper(struct mwifiex_private *priv,
				     u8 *ie_data_ptr, u16 ie_len)
{
	if (ie_len) {
		if (ie_len > sizeof(priv->wpa_ie)) {
			dev_err(priv->adapter->dev,
				"failed to copy WPA IE, too big\n");
			return -1;
		}
		memcpy(priv->wpa_ie, ie_data_ptr, ie_len);
		priv->wpa_ie_len = (u8) ie_len;
		dev_dbg(priv->adapter->dev, "cmd: Set Wpa_ie_len=%d IE=%#x\n",
942
			priv->wpa_ie_len, priv->wpa_ie[0]);
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982

		if (priv->wpa_ie[0] == WLAN_EID_WPA) {
			priv->sec_info.wpa_enabled = true;
		} else if (priv->wpa_ie[0] == WLAN_EID_RSN) {
			priv->sec_info.wpa2_enabled = true;
		} else {
			priv->sec_info.wpa_enabled = false;
			priv->sec_info.wpa2_enabled = false;
		}
	} else {
		memset(priv->wpa_ie, 0, sizeof(priv->wpa_ie));
		priv->wpa_ie_len = 0;
		dev_dbg(priv->adapter->dev, "info: reset wpa_ie_len=%d IE=%#x\n",
			priv->wpa_ie_len, priv->wpa_ie[0]);
		priv->sec_info.wpa_enabled = false;
		priv->sec_info.wpa2_enabled = false;
	}

	return 0;
}

/*
 * IOCTL request handler to set/reset WAPI IE.
 *
 * The supplied WAPI IE is treated as a opaque buffer. Only the first field
 * is checked to internally enable WAPI. If buffer length is zero, the existing
 * WAPI IE is reset.
 */
static int mwifiex_set_wapi_ie(struct mwifiex_private *priv,
			       u8 *ie_data_ptr, u16 ie_len)
{
	if (ie_len) {
		if (ie_len > sizeof(priv->wapi_ie)) {
			dev_dbg(priv->adapter->dev,
				"info: failed to copy WAPI IE, too big\n");
			return -1;
		}
		memcpy(priv->wapi_ie, ie_data_ptr, ie_len);
		priv->wapi_ie_len = ie_len;
		dev_dbg(priv->adapter->dev, "cmd: Set wapi_ie_len=%d IE=%#x\n",
983
			priv->wapi_ie_len, priv->wapi_ie[0]);
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003

		if (priv->wapi_ie[0] == WLAN_EID_BSS_AC_ACCESS_DELAY)
			priv->sec_info.wapi_enabled = true;
	} else {
		memset(priv->wapi_ie, 0, sizeof(priv->wapi_ie));
		priv->wapi_ie_len = ie_len;
		dev_dbg(priv->adapter->dev,
			"info: Reset wapi_ie_len=%d IE=%#x\n",
		       priv->wapi_ie_len, priv->wapi_ie[0]);
		priv->sec_info.wapi_enabled = false;
	}
	return 0;
}

/*
 * IOCTL request handler to set WAPI key.
 *
 * This function prepares the correct firmware command and
 * issues it.
 */
1004
static int mwifiex_sec_ioctl_set_wapi_key(struct mwifiex_private *priv,
1005
1006
1007
			       struct mwifiex_ds_encrypt_key *encrypt_key)
{

1008
	return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_KEY_MATERIAL,
1009
1010
				     HostCmd_ACT_GEN_SET, KEY_INFO_ENABLED,
				     encrypt_key);
1011
1012
1013
1014
1015
1016
1017
1018
}

/*
 * IOCTL request handler to set WEP network key.
 *
 * This function prepares the correct firmware command and
 * issues it, after validation checks.
 */
1019
static int mwifiex_sec_ioctl_set_wep_key(struct mwifiex_private *priv,
1020
1021
			      struct mwifiex_ds_encrypt_key *encrypt_key)
{
1022
1023
	int ret;
	struct mwifiex_wep_key *wep_key;
1024
1025
1026
1027
1028
1029
1030
	int index;

	if (priv->wep_key_curr_index >= NUM_WEP_KEYS)
		priv->wep_key_curr_index = 0;
	wep_key = &priv->wep_key[priv->wep_key_curr_index];
	index = encrypt_key->key_index;
	if (encrypt_key->key_disable) {
1031
		priv->sec_info.wep_enabled = 0;
1032
1033
1034
1035
	} else if (!encrypt_key->key_len) {
		/* Copy the required key as the current key */
		wep_key = &priv->wep_key[index];
		if (!wep_key->key_length) {
1036
			dev_err(priv->adapter->dev,
1037
1038
1039
1040
				"key not set, so cannot enable it\n");
			return -1;
		}
		priv->wep_key_curr_index = (u16) index;
1041
		priv->sec_info.wep_enabled = 1;
1042
1043
1044
1045
1046
1047
1048
1049
1050
	} else {
		wep_key = &priv->wep_key[index];
		memset(wep_key, 0, sizeof(struct mwifiex_wep_key));
		/* Copy the key in the driver */
		memcpy(wep_key->key_material,
		       encrypt_key->key_material,
		       encrypt_key->key_len);
		wep_key->key_index = index;
		wep_key->key_length = encrypt_key->key_len;
1051
		priv->sec_info.wep_enabled = 1;
1052
1053
1054
	}
	if (wep_key->key_length) {
		/* Send request to firmware */
1055
1056
1057
		ret = mwifiex_send_cmd_async(priv,
					     HostCmd_CMD_802_11_KEY_MATERIAL,
					     HostCmd_ACT_GEN_SET, 0, NULL);
1058
1059
1060
		if (ret)
			return ret;
	}
1061
	if (priv->sec_info.wep_enabled)
1062
1063
1064
1065
		priv->curr_pkt_filter |= HostCmd_ACT_MAC_WEP_ENABLE;
	else
		priv->curr_pkt_filter &= ~HostCmd_ACT_MAC_WEP_ENABLE;

1066
1067
1068
	ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_MAC_CONTROL,
				    HostCmd_ACT_GEN_SET, 0,
				    &priv->curr_pkt_filter);
1069
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1073
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1075
1076
1077
1078
1079
1080
1081
1082

	return ret;
}

/*
 * IOCTL request handler to set WPA key.
 *
 * This function prepares the correct firmware command and
 * issues it, after validation checks.
 *
 * Current driver only supports key length of up to 32 bytes.
 *
 * This function can also be used to disable a currently set key.
 */
1083
static int mwifiex_sec_ioctl_set_wpa_key(struct mwifiex_private *priv,
1084
1085
			      struct mwifiex_ds_encrypt_key *encrypt_key)
{
1086
	int ret;
1087
1088
1089
1090
	u8 remove_key = false;
	struct host_cmd_ds_802_11_key_material *ibss_key;

	/* Current driver only supports key length of up to 32 bytes */
1091
	if (encrypt_key->key_len > WLAN_MAX_KEY_LEN) {
1092
		dev_err(priv->adapter->dev, "key length too long\n");
1093
1094
1095
		return -1;
	}

1096
	if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
1097
1098
1099
1100
1101
1102
		/*
		 * IBSS/WPA-None uses only one key (Group) for both receiving
		 * and sending unicast and multicast packets.
		 */
		/* Send the key as PTK to firmware */
		encrypt_key->key_index = MWIFIEX_KEY_INDEX_UNICAST;
1103
		ret = mwifiex_send_cmd_async(priv,
1104
1105
1106
					     HostCmd_CMD_802_11_KEY_MATERIAL,
					     HostCmd_ACT_GEN_SET,
					     KEY_INFO_ENABLED, encrypt_key);
1107
1108
1109
1110
1111
1112
1113
1114
1115
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		if (ret)
			return ret;

		ibss_key = &priv->aes_key;
		memset(ibss_key, 0,
		       sizeof(struct host_cmd_ds_802_11_key_material));
		/* Copy the key in the driver */
		memcpy(ibss_key->key_param_set.key, encrypt_key->key_material,
		       encrypt_key->key_len);
		memcpy(&ibss_key->key_param_set.key_len, &encrypt_key->key_len,
		       sizeof(ibss_key->key_param_set.key_len));
		ibss_key->key_param_set.key_type_id
			= cpu_to_le16(KEY_TYPE_ID_TKIP);
1120
		ibss_key->key_param_set.key_info = cpu_to_le16(KEY_ENABLED);
1121
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1128
1129

		/* Send the key as GTK to firmware */
		encrypt_key->key_index = ~MWIFIEX_KEY_INDEX_UNICAST;
	}

	if (!encrypt_key->key_index)
		encrypt_key->key_index = MWIFIEX_KEY_INDEX_UNICAST;

	if (remove_key)
1130
		ret = mwifiex_send_cmd_sync(priv,
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					    HostCmd_CMD_802_11_KEY_MATERIAL,
					    HostCmd_ACT_GEN_SET,
					    !KEY_INFO_ENABLED, encrypt_key);
1134
	else
1135
		ret = mwifiex_send_cmd_sync(priv,
1136
1137
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					    HostCmd_CMD_802_11_KEY_MATERIAL,
					    HostCmd_ACT_GEN_SET,
					    KEY_INFO_ENABLED, encrypt_key);
1139
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1141
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1145
1146
1147
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1149
1150
1151
1152

	return ret;
}

/*
 * IOCTL request handler to set/get network keys.
 *
 * This is a generic key handling function which supports WEP, WPA
 * and WAPI.
 */
static int
mwifiex_sec_ioctl_encrypt_key(struct mwifiex_private *priv,
			      struct mwifiex_ds_encrypt_key *encrypt_key)
{
1153
	int status;
1154
1155

	if (encrypt_key->is_wapi_key)
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		status = mwifiex_sec_ioctl_set_wapi_key(priv, encrypt_key);
1157
	else if (encrypt_key->key_len > WLAN_KEY_LEN_WEP104)
1158
		status = mwifiex_sec_ioctl_set_wpa_key(priv, encrypt_key);
1159
	else
1160
		status = mwifiex_sec_ioctl_set_wep_key(priv, encrypt_key);
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	return status;
}

/*
 * This function returns the driver version.
 */
int
mwifiex_drv_get_driver_version(struct mwifiex_adapter *adapter, char *version,
			       int max_len)
{
	union {
		u32 l;
		u8 c[4];
	} ver;
	char fw_ver[32];

	ver.l = adapter->fw_release_number;
	sprintf(fw_ver, "%u.%u.%u.p%u", ver.c[2], ver.c[1], ver.c[0], ver.c[3]);

	snprintf(version, max_len, driver_version, fw_ver);

	dev_dbg(adapter->dev, "info: MWIFIEX VERSION: %s\n", version);

	return 0;
}

/*
 * Sends IOCTL request to get signal information.
 *
 * This function allocates the IOCTL request buffer, fills it
 * with requisite parameters and calls the IOCTL handler.
 */
1193
int mwifiex_get_signal_info(struct mwifiex_private *priv,
1194
1195
			    struct mwifiex_ds_get_signal *signal)
{
1196
	int status;
1197

1198
	signal->selector = ALL_RSSI_INFO_MASK;
1199

1200
1201
1202
1203
1204
1205
1206
1207
1208
	/* Signal info can be obtained only if connected */
	if (!priv->media_connected) {
		dev_dbg(priv->adapter->dev,
			"info: Can not get signal in disconnected state\n");
		return -1;
	}

	status = mwifiex_send_cmd_sync(priv, HostCmd_CMD_RSSI_INFO,
				       HostCmd_ACT_GEN_GET, 0, signal);
1209
1210

	if (!status) {
1211
		if (signal->selector & BCN_RSSI_AVG_MASK)
1212
			priv->qual_level = signal->bcn_rssi_avg;
1213
		if (signal->selector & BCN_NF_AVG_MASK)
1214
			priv->qual_noise = signal->bcn_nf_avg;
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1234
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	}

	return status;
}

/*
 * Sends IOCTL request to set encoding parameters.
 *
 * This function allocates the IOCTL request buffer, fills it
 * with requisite parameters and calls the IOCTL handler.
 */
int mwifiex_set_encode(struct mwifiex_private *priv, const u8 *key,
			int key_len, u8 key_index, int disable)
{
	struct mwifiex_ds_encrypt_key encrypt_key;

	memset(&encrypt_key, 0, sizeof(struct mwifiex_ds_encrypt_key));
	encrypt_key.key_len = key_len;
	if (!disable) {
		encrypt_key.key_index = key_index;
		if (key_len)
			memcpy(encrypt_key.key_material, key, key_len);
	} else {
		encrypt_key.key_disable = true;
	}

1241
	return mwifiex_sec_ioctl_encrypt_key(priv, &encrypt_key);
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1255
}

/*
 * Sends IOCTL request to get extended version.
 *
 * This function allocates the IOCTL request buffer, fills it
 * with requisite parameters and calls the IOCTL handler.
 */
int
mwifiex_get_ver_ext(struct mwifiex_private *priv)
{
	struct mwifiex_ver_ext ver_ext;

	memset(&ver_ext, 0, sizeof(struct host_cmd_ds_version_ext));
1256
	if (mwifiex_send_cmd_sync(priv, HostCmd_CMD_VERSION_EXT,
1257
				  HostCmd_ACT_GEN_GET, 0, &ver_ext))
1258
		return -1;
1259

1260
	return 0;
1261
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1268
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1272
}

/*
 * Sends IOCTL request to get statistics information.
 *
 * This function allocates the IOCTL request buffer, fills it
 * with requisite parameters and calls the IOCTL handler.
 */
int
mwifiex_get_stats_info(struct mwifiex_private *priv,
		       struct mwifiex_ds_get_stats *log)
{
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	return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_GET_LOG,
1274
				     HostCmd_ACT_GEN_GET, 0, log);
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1315
}

/*
 * IOCTL request handler to read/write register.
 *
 * This function prepares the correct firmware command and
 * issues it.
 *
 * Access to the following registers are supported -
 *      - MAC
 *      - BBP
 *      - RF
 *      - PMIC
 *      - CAU
 */
static int mwifiex_reg_mem_ioctl_reg_rw(struct mwifiex_private *priv,
					struct mwifiex_ds_reg_rw *reg_rw,
					u16 action)
{
	u16 cmd_no;

	switch (le32_to_cpu(reg_rw->type)) {
	case MWIFIEX_REG_MAC:
		cmd_no = HostCmd_CMD_MAC_REG_ACCESS;
		break;
	case MWIFIEX_REG_BBP:
		cmd_no = HostCmd_CMD_BBP_REG_ACCESS;
		break;
	case MWIFIEX_REG_RF:
		cmd_no = HostCmd_CMD_RF_REG_ACCESS;
		break;
	case MWIFIEX_REG_PMIC:
		cmd_no = HostCmd_CMD_PMIC_REG_ACCESS;
		break;
	case MWIFIEX_REG_CAU:
		cmd_no = HostCmd_CMD_CAU_REG_ACCESS;
		break;
	default:
		return -1;
	}

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	return mwifiex_send_cmd_sync(priv, cmd_no, action, 0, reg_rw);
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1335

}

/*
 * Sends IOCTL request to write to a register.
 *
 * This function allocates the IOCTL request buffer, fills it
 * with requisite parameters and calls the IOCTL handler.
 */
int
mwifiex_reg_write(struct mwifiex_private *priv, u32 reg_type,
		  u32 reg_offset, u32 reg_value)
{
	struct mwifiex_ds_reg_rw reg_rw;

	reg_rw.type = cpu_to_le32(reg_type);
	reg_rw.offset = cpu_to_le32(reg_offset);
	reg_rw.value = cpu_to_le32(reg_value);

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	return mwifiex_reg_mem_ioctl_reg_rw(priv, &reg_rw, HostCmd_ACT_GEN_SET);
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1348
}

/*
 * Sends IOCTL request to read from a register.
 *
 * This function allocates the IOCTL request buffer, fills it
 * with requisite parameters and calls the IOCTL handler.
 */
int
mwifiex_reg_read(struct mwifiex_private *priv, u32 reg_type,
		 u32 reg_offset, u32 *value)
{
1349
	int ret;
1350
1351
1352
1353
	struct mwifiex_ds_reg_rw reg_rw;

	reg_rw.type = cpu_to_le32(reg_type);
	reg_rw.offset = cpu_to_le32(reg_offset);
1354
	ret = mwifiex_reg_mem_ioctl_reg_rw(priv, &reg_rw, HostCmd_ACT_GEN_GET);
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1356
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1374

	if (ret)
		goto done;

	*value = le32_to_cpu(reg_rw.value);

done:
	return ret;
}

/*
 * Sends IOCTL request to read from EEPROM.
 *
 * This function allocates the IOCTL request buffer, fills it
 * with requisite parameters and calls the IOCTL handler.
 */
int
mwifiex_eeprom_read(struct mwifiex_private *priv, u16 offset, u16 bytes,
		    u8 *value)
{
1375
	int ret;
1376
1377
1378
1379
1380
	struct mwifiex_ds_read_eeprom rd_eeprom;

	rd_eeprom.offset = cpu_to_le16((u16) offset);
	rd_eeprom.byte_count = cpu_to_le16((u16) bytes);

1381
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1383
	/* Send request to firmware */
	ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_EEPROM_ACCESS,
				    HostCmd_ACT_GEN_GET, 0, &rd_eeprom);
1384

1385
1386
	if (!ret)
		memcpy(value, rd_eeprom.value, MAX_EEPROM_DATA);
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1413
	return ret;
}

/*
 * This function sets a generic IE. In addition to generic IE, it can
 * also handle WPA, WPA2 and WAPI IEs.
 */
static int
mwifiex_set_gen_ie_helper(struct mwifiex_private *priv, u8 *ie_data_ptr,
			  u16 ie_len)
{
	int ret = 0;
	struct ieee_types_vendor_header *pvendor_ie;
	const u8 wpa_oui[] = { 0x00, 0x50, 0xf2, 0x01 };
	const u8 wps_oui[] = { 0x00, 0x50, 0xf2, 0x04 };

	/* If the passed length is zero, reset the buffer */
	if (!ie_len) {
		priv->gen_ie_buf_len = 0;
		priv->wps.session_enable = false;

		return 0;
	} else if (!ie_data_ptr) {
		return -1;
	}
	pvendor_ie = (struct ieee_types_vendor_header *) ie_data_ptr;
	/* Test to see if it is a WPA IE, if not, then it is a gen IE */
1414
1415
1416
	if (((pvendor_ie->element_id == WLAN_EID_WPA) &&
	     (!memcmp(pvendor_ie->oui, wpa_oui, sizeof(wpa_oui)))) ||
	    (pvendor_ie->element_id == WLAN_EID_RSN)) {
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1422
1423
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1425
1426
1427
1428
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1430
1431
1432
1433
1434
1435
1436
1437
1438

		/* IE is a WPA/WPA2 IE so call set_wpa function */
		ret = mwifiex_set_wpa_ie_helper(priv, ie_data_ptr, ie_len);
		priv->wps.session_enable = false;

		return ret;
	} else if (pvendor_ie->element_id == WLAN_EID_BSS_AC_ACCESS_DELAY) {
		/* IE is a WAPI IE so call set_wapi function */
		ret = mwifiex_set_wapi_ie(priv, ie_data_ptr, ie_len);

		return ret;
	}
	/*
	 * Verify that the passed length is not larger than the
	 * available space remaining in the buffer
	 */
	if (ie_len < (sizeof(priv->gen_ie_buf) - priv->gen_ie_buf_len)) {

		/* Test to see if it is a WPS IE, if so, enable
		 * wps session flag
		 */
		pvendor_ie = (struct ieee_types_vendor_header *) ie_data_ptr;
1439
1440
		if ((pvendor_ie->element_id == WLAN_EID_VENDOR_SPECIFIC) &&
		    (!memcmp(pvendor_ie->oui, wps_oui, sizeof(wps_oui)))) {
1441
1442
1443
1444
1445
1446
1447
1448
			priv->wps.session_enable = true;
			dev_dbg(priv->adapter->dev,
				"info: WPS Session Enabled.\n");
		}

		/* Append the passed data to the end of the
		   genIeBuffer */
		memcpy(priv->gen_ie_buf + priv->gen_ie_buf_len, ie_data_ptr,
1449
		       ie_len);
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1492
		/* Increment the stored buffer length by the
		   size passed */
		priv->gen_ie_buf_len += ie_len;
	} else {
		/* Passed data does not fit in the remaining
		   buffer space */
		ret = -1;
	}

	/* Return 0, or -1 for error case */
	return ret;
}

/*
 * IOCTL request handler to set/get generic IE.
 *
 * In addition to various generic IEs, this function can also be
 * used to set the ARP filter.
 */
static int mwifiex_misc_ioctl_gen_ie(struct mwifiex_private *priv,
				     struct mwifiex_ds_misc_gen_ie *gen_ie,
				     u16 action)
{
	struct mwifiex_adapter *adapter = priv->adapter;

	switch (gen_ie->type) {
	case MWIFIEX_IE_TYPE_GEN_IE:
		if (action == HostCmd_ACT_GEN_GET) {
			gen_ie->len = priv->wpa_ie_len;
			memcpy(gen_ie->ie_data, priv->wpa_ie, gen_ie->len);
		} else {
			mwifiex_set_gen_ie_helper(priv, gen_ie->ie_data,
						  (u16) gen_ie->len);
		}
		break;
	case MWIFIEX_IE_TYPE_ARP_FILTER:
		memset(adapter->arp_filter, 0, sizeof(adapter->arp_filter));
		if (gen_ie->len > ARP_FILTER_MAX_BUF_SIZE) {
			adapter->arp_filter_size = 0;
			dev_err(adapter->dev, "invalid ARP filter size\n");
			return -1;
		} else {
			memcpy(adapter->arp_filter, gen_ie->ie_data,
1493
			       gen_ie->len);
1494
1495
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1513
1514
			adapter->arp_filter_size = gen_ie->len;
		}
		break;
	default:
		dev_err(adapter->dev, "invalid IE type\n");
		return -1;
	}
	return 0;
}

/*
 * Sends IOCTL request to set a generic IE.
 *
 * This function allocates the IOCTL request buffer, fills it
 * with requisite parameters and calls the IOCTL handler.
 */
int
mwifiex_set_gen_ie(struct mwifiex_private *priv, u8 *ie, int ie_len)
{
	struct mwifiex_ds_misc_gen_ie gen_ie;

1515
	if (ie_len > IEEE_MAX_IE_SIZE)
1516
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1520
		return -EFAULT;

	gen_ie.type = MWIFIEX_IE_TYPE_GEN_IE;
	gen_ie.len = ie_len;
	memcpy(gen_ie.ie_data, ie, ie_len);
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