wireless: mwifiex: initial commit for Marvell mwifiex driver

This driver adds WiFi support for Marvell 802.11n based chipsets
with SDIO interface. Currently only SD8787 is supported. More
chipsets will be supported later.

drivers/net/wireless/mwifiex/

Signed-off-by: Nishant Sarmukadam <nishants@marvell.com>
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Kiran Divekar <dkiran@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: Yogesh Ashok Powar <yogeshp@marvell.com>
Signed-off-by: Marc Yang <yangyang@marvell.com>
Signed-off-by: Ramesh Radhakrishnan <rramesh@marvell.com>
Signed-off-by: Frank Huang <frankh@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 2478 insertions, 0 deletions

diff --git a/drivers/net/wireless/mwifiex/sta_ioctl.c b/drivers/net/wireless/mwifiex/sta_ioctl.c
new file mode 100644
index 000000000000..665a519b1403
--- /dev/null
+++ b/drivers/net/wireless/mwifiex/sta_ioctl.c
@@ -0,0 +1,2478 @@
+/*
+ * 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.
+ */
+static int
+mwifiex_copy_mcast_addr(struct mwifiex_multicast_list *mlist,
+			struct net_device *dev)
+{
+	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;
+}
+
+/*
+ * Allocate and fills a wait queue with proper parameters.
+ *
+ * This function needs to be called before an IOCTL request can be made.
+ * It can handle the following wait options:
+ *      MWIFIEX_NO_WAIT     - Waiting is disabled
+ *      MWIFIEX_IOCTL_WAIT  - Waiting is done on IOCTL wait queue
+ *      MWIFIEX_CMD_WAIT    - Waiting is done on command wait queue
+ *      MWIFIEX_WSTATS_WAIT - Waiting is done on stats wait queue
+ */
+struct mwifiex_wait_queue *
+mwifiex_alloc_fill_wait_queue(struct mwifiex_private *priv,
+			      u8 wait_option)
+{
+	struct mwifiex_wait_queue *wait = NULL;
+
+	wait = (struct mwifiex_wait_queue *)
+		kzalloc(sizeof(struct mwifiex_wait_queue), GFP_ATOMIC);
+	if (!wait) {
+		dev_err(priv->adapter->dev, "%s: fail to alloc buffer\n",
+						__func__);
+		return wait;
+	}
+
+	wait->bss_index = priv->bss_index;
+
+	switch (wait_option) {
+	case MWIFIEX_NO_WAIT:
+		wait->enabled = 0;
+		break;
+	case MWIFIEX_IOCTL_WAIT:
+		priv->ioctl_wait_q_woken = false;
+		wait->start_time = jiffies;
+		wait->wait = &priv->ioctl_wait_q;
+		wait->condition = &priv->ioctl_wait_q_woken;
+		wait->enabled = 1;
+		break;
+	case MWIFIEX_CMD_WAIT:
+		priv->cmd_wait_q_woken = false;
+		wait->start_time = jiffies;
+		wait->wait = &priv->cmd_wait_q;
+		wait->condition = &priv->cmd_wait_q_woken;
+		wait->enabled = 1;
+		break;
+	case MWIFIEX_WSTATS_WAIT:
+		priv->w_stats_wait_q_woken = false;
+		wait->start_time = jiffies;
+		wait->wait = &priv->w_stats_wait_q;
+		wait->condition = &priv->w_stats_wait_q_woken;
+		wait->enabled = 1;
+		break;
+	}
+
+	return wait;
+}
+
+/*
+ * Wait queue completion handler.
+ *
+ * This function waits on a particular wait queue.
+ * For NO_WAIT option, it returns immediately. It also cancels the
+ * pending IOCTL request after waking up, in case of errors.
+ */
+static void
+mwifiex_wait_ioctl_complete(struct mwifiex_private *priv,
+			    struct mwifiex_wait_queue *wait,
+			    u8 wait_option)
+{
+	bool cancel_flag = false;
+
+	switch (wait_option) {
+	case MWIFIEX_NO_WAIT:
+		break;
+	case MWIFIEX_IOCTL_WAIT:
+		wait_event_interruptible(priv->ioctl_wait_q,
+					 priv->ioctl_wait_q_woken);
+		if (!priv->ioctl_wait_q_woken)
+			cancel_flag = true;
+		break;
+	case MWIFIEX_CMD_WAIT:
+		wait_event_interruptible(priv->cmd_wait_q,
+					 priv->cmd_wait_q_woken);
+		if (!priv->cmd_wait_q_woken)
+			cancel_flag = true;
+		break;
+	case MWIFIEX_WSTATS_WAIT:
+		wait_event_interruptible(priv->w_stats_wait_q,
+					 priv->w_stats_wait_q_woken);
+		if (!priv->w_stats_wait_q_woken)
+			cancel_flag = true;
+		break;
+	}
+	if (cancel_flag) {
+		mwifiex_cancel_pending_ioctl(priv->adapter, wait);
+		dev_dbg(priv->adapter->dev, "cmd: IOCTL cancel: wait=%p, wait_option=%d\n",
+			wait, wait_option);
+	}
+
+	return;
+}
+
+/*
+ * The function waits for the request to complete and issues the
+ * completion handler, if required.
+ */
+int mwifiex_request_ioctl(struct mwifiex_private *priv,
+			  struct mwifiex_wait_queue *wait,
+			  int status, u8 wait_option)
+{
+	switch (status) {
+	case -EINPROGRESS:
+		dev_dbg(priv->adapter->dev, "cmd: IOCTL pending: wait=%p, wait_option=%d\n",
+				wait, wait_option);
+		atomic_inc(&priv->adapter->ioctl_pending);
+		/* Status pending, wake up main process */
+		queue_work(priv->adapter->workqueue, &priv->adapter->main_work);
+
+		/* Wait for completion */
+		if (wait_option) {
+			mwifiex_wait_ioctl_complete(priv, wait, wait_option);
+			status = wait->status;
+		}
+		break;
+	case 0:
+	case -1:
+	case -EBUSY:
+	default:
+		break;
+	}
+	return status;
+}
+EXPORT_SYMBOL_GPL(mwifiex_request_ioctl);
+
+/*
+ * IOCTL request handler to set/get MAC address.
+ *
+ * This function prepares the correct firmware command and
+ * issues it to get the extended version information.
+ */
+static int mwifiex_bss_ioctl_mac_address(struct mwifiex_private *priv,
+					 struct mwifiex_wait_queue *wait,
+					 u8 action, u8 *mac)
+{
+	int ret = 0;
+
+	if ((action == HostCmd_ACT_GEN_GET) && mac) {
+		memcpy(mac, priv->curr_addr, ETH_ALEN);
+		return 0;
+	}
+
+	/* Send request to firmware */
+	ret = mwifiex_prepare_cmd(priv, HostCmd_CMD_802_11_MAC_ADDRESS,
+				  action, 0, wait, mac);
+	if (!ret)
+		ret = -EINPROGRESS;
+
+	return ret;
+}
+
+/*
+ * Sends IOCTL request to set MAC address.
+ *
+ * This function allocates the IOCTL request buffer, fills it
+ * with requisite parameters and calls the IOCTL handler.
+ */
+int mwifiex_request_set_mac_address(struct mwifiex_private *priv)
+{
+	struct mwifiex_wait_queue *wait = NULL;
+	int status = 0;
+	u8 wait_option = MWIFIEX_CMD_WAIT;
+
+	/* Allocate wait buffer */
+	wait = mwifiex_alloc_fill_wait_queue(priv, wait_option);
+	if (!wait)
+		return -ENOMEM;
+
+	status = mwifiex_bss_ioctl_mac_address(priv, wait, HostCmd_ACT_GEN_SET,
+					       NULL);
+
+	status = mwifiex_request_ioctl(priv, wait, status, wait_option);
+	if (!status)
+		memcpy(priv->netdev->dev_addr, priv->curr_addr, ETH_ALEN);
+	else
+		dev_err(priv->adapter->dev, "set mac address failed: status=%d"
+				" error_code=%#x\n", status, wait->status);
+
+	kfree(wait);
+	return status;
+}
+
+/*
+ * IOCTL request handler to set multicast list.
+ *
+ * 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.
+ */
+static int
+mwifiex_bss_ioctl_multicast_list(struct mwifiex_private *priv,
+				 struct mwifiex_wait_queue *wait,
+				 u16 action,
+				 struct mwifiex_multicast_list *mcast_list)
+{
+	int ret = 0;
+	u16 old_pkt_filter;
+
+	old_pkt_filter = priv->curr_pkt_filter;
+	if (action == HostCmd_ACT_GEN_GET)
+		return -1;
+
+	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 */
+					ret = mwifiex_prepare_cmd(priv,
+						HostCmd_CMD_MAC_MULTICAST_ADR,
+						action, 0, wait, mcast_list);
+					if (!ret)
+						ret = -EINPROGRESS;
+				} else {
+					/* Send request to firmware */
+					ret = mwifiex_prepare_cmd(priv,
+						HostCmd_CMD_MAC_MULTICAST_ADR,
+						action, 0, NULL,
+						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) {
+		ret = mwifiex_prepare_cmd(priv, HostCmd_CMD_MAC_CONTROL, action,
+					  0, wait, &priv->curr_pkt_filter);
+		if (!ret)
+			ret = -EINPROGRESS;
+	}
+
+	return ret;
+}
+
+/*
+ * Sends IOCTL request to set multicast list.
+ *
+ * This function allocates the IOCTL request buffer, fills it
+ * with requisite parameters and calls the IOCTL handler.
+ */
+void
+mwifiex_request_set_multicast_list(struct mwifiex_private *priv,
+				   struct net_device *dev)
+{
+	struct mwifiex_wait_queue *wait = NULL;
+	struct mwifiex_multicast_list mcast_list;
+	u8 wait_option = MWIFIEX_NO_WAIT;
+	int status = 0;
+
+	/* Allocate wait buffer */
+	wait = mwifiex_alloc_fill_wait_queue(priv, wait_option);
+	if (!wait)
+		return;
+
+	if (dev->flags & IFF_PROMISC) {
+		mcast_list.mode = MWIFIEX_PROMISC_MODE;
+	} else if (dev->flags & IFF_ALLMULTI ||
+		   netdev_mc_count(dev) > MWIFIEX_MAX_MULTICAST_LIST_SIZE) {
+		mcast_list.mode = MWIFIEX_ALL_MULTI_MODE;
+	} else {
+		mcast_list.mode = MWIFIEX_MULTICAST_MODE;
+		if (netdev_mc_count(dev))
+			mcast_list.num_multicast_addr =
+				mwifiex_copy_mcast_addr(&mcast_list, dev);
+	}
+	status = mwifiex_bss_ioctl_multicast_list(priv, wait,
+						  HostCmd_ACT_GEN_SET,
+						  &mcast_list);
+
+	status = mwifiex_request_ioctl(priv, wait, status, wait_option);
+	if (wait && status != -EINPROGRESS)
+		kfree(wait);
+
+	return;
+}
+
+/*
+ * IOCTL request handler to disconnect from a BSS/IBSS.
+ */
+static int mwifiex_bss_ioctl_stop(struct mwifiex_private *priv,
+				  struct mwifiex_wait_queue *wait, u8 *mac)
+{
+	return mwifiex_deauthenticate(priv, wait, mac);
+}
+
+/*
+ * Sends IOCTL request to disconnect from a BSS.
+ *
+ * This function allocates the IOCTL request buffer, fills it
+ * with requisite parameters and calls the IOCTL handler.
+ */
+int mwifiex_disconnect(struct mwifiex_private *priv, u8 wait_option, u8 *mac)
+{
+	struct mwifiex_wait_queue *wait = NULL;
+	int status = 0;
+
+	/* Allocate wait buffer */
+	wait = mwifiex_alloc_fill_wait_queue(priv, wait_option);
+	if (!wait)
+		return -ENOMEM;
+
+	status = mwifiex_bss_ioctl_stop(priv, wait, mac);
+
+	status = mwifiex_request_ioctl(priv, wait, status, wait_option);
+
+	kfree(wait);
+	return status;
+}
+EXPORT_SYMBOL_GPL(mwifiex_disconnect);
+
+/*
+ * IOCTL request handler to join a BSS/IBSS.
+ *
+ * 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.
+ */
+static int mwifiex_bss_ioctl_start(struct mwifiex_private *priv,
+				   struct mwifiex_wait_queue *wait,
+				   struct mwifiex_ssid_bssid *ssid_bssid)
+{
+	int ret = 0;
+	struct mwifiex_adapter *adapter = priv->adapter;
+	s32 i = -1;
+
+	priv->scan_block = false;
+	if (!ssid_bssid)
+		return -1;
+
+	if (priv->bss_mode == MWIFIEX_BSS_MODE_INFRA) {
+		/* Infra mode */
+		ret = mwifiex_deauthenticate(priv, NULL, NULL);
+		if (ret)
+			return ret;
+
+		/* Search for the requested SSID in the scan table */
+		if (ssid_bssid->ssid.ssid_len)
+			i = mwifiex_find_ssid_in_list(priv, &ssid_bssid->ssid,
+						NULL, MWIFIEX_BSS_MODE_INFRA);
+		else
+			i = mwifiex_find_bssid_in_list(priv,
+						(u8 *) &ssid_bssid->bssid,
+						MWIFIEX_BSS_MODE_INFRA);
+		if (i < 0)
+			return -1;
+
+		dev_dbg(adapter->dev,
+			"info: SSID found in scan list ... associating...\n");
+
+		/* Clear any past association response stored for
+		 * application retrieval */
+		priv->assoc_rsp_size = 0;
+		ret = mwifiex_associate(priv, wait, &adapter->scan_table[i]);
+		if (ret)
+			return ret;
+	} else {
+		/* Adhoc mode */
+		/* If the requested SSID matches current SSID, return */
+		if (ssid_bssid->ssid.ssid_len &&
+		    (!mwifiex_ssid_cmp
+		     (&priv->curr_bss_params.bss_descriptor.ssid,
+		      &ssid_bssid->ssid)))
+			return 0;
+
+		/* Exit Adhoc mode first */
+		dev_dbg(adapter->dev, "info: Sending Adhoc Stop\n");
+		ret = mwifiex_deauthenticate(priv, NULL, NULL);
+		if (ret)
+			return ret;
+
+		priv->adhoc_is_link_sensed = false;
+
+		/* Search for the requested network in the scan table */
+		if (ssid_bssid->ssid.ssid_len)
+			i = mwifiex_find_ssid_in_list(priv,
+						      &ssid_bssid->ssid, NULL,
+						      MWIFIEX_BSS_MODE_IBSS);
+		else
+			i = mwifiex_find_bssid_in_list(priv,
+						       (u8 *)&ssid_bssid->bssid,
+						       MWIFIEX_BSS_MODE_IBSS);
+
+		if (i >= 0) {
+			dev_dbg(adapter->dev, "info: network found in scan"
+							" list. Joining...\n");
+			ret = mwifiex_adhoc_join(priv, wait,
+						 &adapter->scan_table[i]);
+			if (ret)
+				return ret;
+		} else {	/* i >= 0 */
+			dev_dbg(adapter->dev, "info: Network not found in "
+				"the list, creating adhoc with ssid = %s\n",
+			       ssid_bssid->ssid.ssid);
+			ret = mwifiex_adhoc_start(priv, wait,
+						  &ssid_bssid->ssid);
+			if (ret)
+				return ret;
+		}
+	}
+
+	if (!ret)
+		ret = -EINPROGRESS;
+
+	return ret;
+}
+
+/*
+ * Sends IOCTL request to connect with a BSS.
+ *
+ * This function allocates the IOCTL request buffer, fills it
+ * with requisite parameters and calls the IOCTL handler.
+ */
+int mwifiex_bss_start(struct mwifiex_private *priv, u8 wait_option,
+		      struct mwifiex_ssid_bssid *ssid_bssid)
+{
+	struct mwifiex_wait_queue *wait = NULL;
+	struct mwifiex_ssid_bssid tmp_ssid_bssid;
+	int status = 0;
+
+	/* Stop the O.S. TX queue if needed */
+	if (!netif_queue_stopped(priv->netdev))
+		netif_stop_queue(priv->netdev);
+
+	/* Allocate wait buffer */
+	wait = mwifiex_alloc_fill_wait_queue(priv, wait_option);
+	if (!wait)
+		return -ENOMEM;
+
+	if (ssid_bssid)
+		memcpy(&tmp_ssid_bssid, ssid_bssid,
+		       sizeof(struct mwifiex_ssid_bssid));
+	status = mwifiex_bss_ioctl_start(priv, wait, &tmp_ssid_bssid);
+
+	status = mwifiex_request_ioctl(priv, wait, status, wait_option);
+
+	kfree(wait);
+	return status;
+}
+
+/*
+ * IOCTL request handler to set host sleep configuration.
+ *
+ * This function prepares the correct firmware command and
+ * issues it.
+ */
+static int
+mwifiex_pm_ioctl_hs_cfg(struct mwifiex_private *priv,
+			struct mwifiex_wait_queue *wait,
+			u16 action, struct mwifiex_ds_hs_cfg *hs_cfg)
+{
+	struct mwifiex_adapter *adapter = priv->adapter;
+	int status = 0;
+	u32 prev_cond = 0;
+
+	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;
+			} else if (adapter->hs_cfg.conditions ==
+						cpu_to_le32(
+						HOST_SLEEP_CFG_CANCEL)) {
+				/* Return failure if no parameters for HS
+				   enable */
+				status = -1;
+				break;
+			}
+			status = mwifiex_prepare_cmd(priv,
+					HostCmd_CMD_802_11_HS_CFG_ENH,
+					HostCmd_ACT_GEN_SET,
+					0, wait, &adapter->hs_cfg);
+			if (!status)
+				status = -EINPROGRESS;
+			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 =
+				cpu_to_le32(hs_cfg->conditions);
+			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 set Host Sleep parameters.
+ *
+ * This function allocates the IOCTL request buffer, fills it
+ * with requisite parameters and calls the IOCTL handler.
+ */
+int mwifiex_set_hs_params(struct mwifiex_private *priv, u16 action,
+			      u8 wait_option,
+			      struct mwifiex_ds_hs_cfg *hscfg)
+{
+	int ret = 0;
+	struct mwifiex_wait_queue *wait = NULL;
+
+	if (!hscfg)
+		return -ENOMEM;
+
+	/* Allocate wait buffer */
+	wait = mwifiex_alloc_fill_wait_queue(priv, wait_option);
+	if (!wait)
+		return -ENOMEM;
+
+	ret = mwifiex_pm_ioctl_hs_cfg(priv, wait, action, hscfg);
+
+	ret = mwifiex_request_ioctl(priv, wait, ret, wait_option);
+
+	if (wait && (ret != -EINPROGRESS))
+		kfree(wait);
+	return ret;
+}
+
+/*
+ * 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_cancel_hs(struct mwifiex_private *priv, u8 wait_option)
+{
+	int ret = 0;
+	struct mwifiex_ds_hs_cfg hscfg;
+
+	/* Cancel Host Sleep */
+	hscfg.conditions = HOST_SLEEP_CFG_CANCEL;
+	hscfg.is_invoke_hostcmd = true;
+	ret = mwifiex_set_hs_params(priv, HostCmd_ACT_GEN_SET,
+					wait_option, &hscfg);
+
+	return ret;
+}
+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;
+	}
+
+	/* Enable Host Sleep */
+	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,
+						       MWIFIEX_BSS_ROLE_STA),
+				      HostCmd_ACT_GEN_SET,
+				      MWIFIEX_IOCTL_WAIT, &hscfg)) {
+		dev_err(adapter->dev, "IOCTL request HS enable failed\n");
+		return false;
+	}
+
+	wait_event_interruptible(adapter->hs_activate_wait_q,
+			adapter->hs_activate_wait_q_woken);
+
+	return true;
+}
+EXPORT_SYMBOL_GPL(mwifiex_enable_hs);
+
+/*
+ * IOCTL request handler to get signal information.
+ *
+ * This function prepares the correct firmware command and
+ * issues it to get the signal (RSSI) information.
+ *
+ * This only works in the connected mode.
+ */
+static int mwifiex_get_info_signal(struct mwifiex_private *priv,
+				   struct mwifiex_wait_queue *wait,
+				   struct mwifiex_ds_get_signal *signal)
+{
+	int ret = 0;
+
+	if (!wait) {
+		dev_err(priv->adapter->dev, "WAIT information is not present\n");
+		return -1;
+	}
+
+	/* 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;
+	}
+
+	/* Send request to firmware */
+	ret = mwifiex_prepare_cmd(priv, HostCmd_CMD_RSSI_INFO,
+				  HostCmd_ACT_GEN_GET, 0, wait, signal);
+
+	if (!ret)
+		ret = -EINPROGRESS;
+
+	return ret;
+}
+
+/*
+ * IOCTL request handler to get statistics.
+ *
+ * This function prepares the correct firmware command and
+ * issues it to get the statistics (RSSI) information.
+ */
+static int mwifiex_get_info_stats(struct mwifiex_private *priv,
+			   struct mwifiex_wait_queue *wait,
+			   struct mwifiex_ds_get_stats *log)
+{
+	int ret = 0;
+
+	if (!wait) {
+		dev_err(priv->adapter->dev, "MWIFIEX IOCTL information is not present\n");
+		return -1;
+	}
+
+	/* Send request to firmware */
+	ret = mwifiex_prepare_cmd(priv, HostCmd_CMD_802_11_GET_LOG,
+				  HostCmd_ACT_GEN_GET, 0, wait, log);
+
+	if (!ret)
+		ret = -EINPROGRESS;
+
+	return ret;
+}
+
+/*
+ * 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;
+	s32 tbl_idx = 0;
+
+	if (!info)
+		return -1;
+
+	/* Get current BSS info */
+	bss_desc = &priv->curr_bss_params.bss_descriptor;
+
+	/* BSS mode */
+	info->bss_mode = priv->bss_mode;
+
+	/* SSID */
+	memcpy(&info->ssid, &bss_desc->ssid,
+	       sizeof(struct mwifiex_802_11_ssid));
+
+	/* BSSID */
+	memcpy(&info->bssid, &bss_desc->mac_address, ETH_ALEN);
+
+	/* Channel */
+	info->bss_chan = bss_desc->channel;
+
+	/* Region code */
+	info->region_code = adapter->region_code;
+
+	/* Scan table index if connected */
+	info->scan_table_idx = 0;
+	if (priv->media_connected) {
+		tbl_idx =
+			mwifiex_find_ssid_in_list(priv, &bss_desc->ssid,
+						  bss_desc->mac_address,
+						  priv->bss_mode);
+		if (tbl_idx >= 0)
+			info->scan_table_idx = tbl_idx;
+	}
+
+	/* Connection status */
+	info->media_connected = priv->media_connected;
+
+	/* Radio status */
+	info->radio_on = adapter->radio_on;
+
+	/* Tx power information */
+	info->max_power_level = priv->max_tx_power_level;
+	info->min_power_level = priv->min_tx_power_level;
+
+	/* AdHoc state */
+	info->adhoc_state = priv->adhoc_state;
+
+	/* Last beacon NF */
+	info->bcn_nf_last = priv->bcn_nf_last;
+
+	/* wep status */
+	if (priv->sec_info.wep_status == MWIFIEX_802_11_WEP_ENABLED)
+		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;
+}
+
+/*
+ * IOCTL request handler to get extended version information.
+ *
+ * This function prepares the correct firmware command and
+ * issues it to get the extended version information.
+ */
+static int mwifiex_get_info_ver_ext(struct mwifiex_private *priv,
+				    struct mwifiex_wait_queue *wait,
+				    struct mwifiex_ver_ext *ver_ext)
+{
+	int ret = 0;
+
+	/* Send request to firmware */
+	ret = mwifiex_prepare_cmd(priv, HostCmd_CMD_VERSION_EXT,
+				  HostCmd_ACT_GEN_GET, 0, wait, ver_ext);
+	if (!ret)
+		ret = -EINPROGRESS;
+
+	return ret;
+}
+
+/*
+ * IOCTL request handler to set/get SNMP MIB parameters.
+ *
+ * This function prepares the correct firmware command and
+ * issues it.
+ *
+ * Currently the following parameters are supported -
+ *      Set/get RTS Threshold
+ *      Set/get fragmentation threshold
+ *      Set/get retry count
+ */
+int mwifiex_snmp_mib_ioctl(struct mwifiex_private *priv,
+			   struct mwifiex_wait_queue *wait,
+			   u32 cmd_oid, u16 action, u32 *value)
+{
+	int ret = 0;
+
+	if (!value)
+		return -1;
+
+	/* Send request to firmware */
+	ret = mwifiex_prepare_cmd(priv, HostCmd_CMD_802_11_SNMP_MIB,
+				  action, cmd_oid, wait, value);
+
+	if (!ret)
+		ret = -EINPROGRESS;
+
+	return ret;
+}
+
+/*
+ * IOCTL request handler to set/get band configurations.
+ *
+ * For SET operation, it performs extra checks to make sure the Ad-Hoc
+ * band and channel are compatible. Otherwise it returns an error.
+ *
+ * For GET operation, this function retrieves the following information -
+ *      - Infra bands
+ *      - Ad-hoc band
+ *      - Ad-hoc channel
+ *      - Secondary channel offset
+ */
+int mwifiex_radio_ioctl_band_cfg(struct mwifiex_private *priv,
+				 u16 action,
+				 struct mwifiex_ds_band_cfg *radio_cfg)
+{
+	struct mwifiex_adapter *adapter = priv->adapter;
+	u8 infra_band = 0;
+	u8 adhoc_band = 0;
+	u32 adhoc_channel = 0;
+
+	if (action == HostCmd_ACT_GEN_GET) {
+		/* Infra Bands */
+		radio_cfg->config_bands = adapter->config_bands;
+		/* Adhoc Band */
+		radio_cfg->adhoc_start_band = adapter->adhoc_start_band;
+		/* Adhoc channel */
+		radio_cfg->adhoc_channel = priv->adhoc_channel;
+		/* Secondary channel offset */
+		radio_cfg->sec_chan_offset = adapter->chan_offset;
+		return 0;
+	}
+
+	/* For action = SET */
+	infra_band = (u8) radio_cfg->config_bands;
+	adhoc_band = (u8) radio_cfg->adhoc_start_band;
+	adhoc_channel = radio_cfg->adhoc_channel;
+
+	/* SET Infra band */
+	if ((infra_band | adapter->fw_bands) & ~adapter->fw_bands)
+		return -1;
+
+	adapter->config_bands = infra_band;
+
+	/* SET Ad-hoc Band */
+	if ((adhoc_band | adapter->fw_bands) & ~adapter->fw_bands)
+		return -1;
+
+	if (adhoc_band)
+		adapter->adhoc_start_band = adhoc_band;
+	adapter->chan_offset = (u8) radio_cfg->sec_chan_offset;
+	/*
+	 * If no adhoc_channel is supplied verify if the existing adhoc
+	 * channel compiles with new adhoc_band
+	 */
+	if (!adhoc_channel) {
+		if (!mwifiex_get_cfp_by_band_and_channel_from_cfg80211
+		     (priv, adapter->adhoc_start_band,
+		     priv->adhoc_channel)) {
+			/* Pass back the default channel */
+			radio_cfg->adhoc_channel = DEFAULT_AD_HOC_CHANNEL;
+			if ((adapter->adhoc_start_band & BAND_A)
+			    || (adapter->adhoc_start_band & BAND_AN))
+				radio_cfg->adhoc_channel =
+					DEFAULT_AD_HOC_CHANNEL_A;
+		}
+	} else {	/* Retrurn error if adhoc_band and
+			   adhoc_channel combination is invalid */
+		if (!mwifiex_get_cfp_by_band_and_channel_from_cfg80211
+		    (priv, adapter->adhoc_start_band, (u16) adhoc_channel))
+			return -1;
+		priv->adhoc_channel = (u8) adhoc_channel;
+	}
+	if ((adhoc_band & BAND_GN) || (adhoc_band & BAND_AN))
+		adapter->adhoc_11n_enabled = true;
+	else
+		adapter->adhoc_11n_enabled = false;
+
+	return 0;
+}
+
+/*
+ * IOCTL request handler to set/get active channel.
+ *
+ * This function performs validity checking on channel/frequency
+ * compatibility and returns failure if not valid.
+ */
+int mwifiex_bss_ioctl_channel(struct mwifiex_private *priv, u16 action,
+			      struct mwifiex_chan_freq_power *chan)
+{
+	struct mwifiex_adapter *adapter = priv->adapter;
+	struct mwifiex_chan_freq_power *cfp = NULL;
+
+	if (!chan)
+		return -1;
+
+	if (action == HostCmd_ACT_GEN_GET) {
+		cfp = mwifiex_get_cfp_by_band_and_channel_from_cfg80211(priv,
+				priv->curr_bss_params.band,
+				(u16) priv->curr_bss_params.bss_descriptor.
+					channel);
+		chan->channel = cfp->channel;
+		chan->freq = cfp->freq;
+
+		return 0;
+	}
+	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)
+			cfp = mwifiex_get_cfp_by_band_and_channel_from_cfg80211
+					(priv, 0, (u16) chan->channel);
+		if (!cfp) {
+			cfp = mwifiex_get_cfp_by_band_and_channel_from_cfg80211
+					(priv, BAND_A, (u16) chan->channel);
+			if (cfp) {
+				if (adapter->adhoc_11n_enabled)
+					adapter->adhoc_start_band = BAND_A
+						| BAND_AN;
+				else
+					adapter->adhoc_start_band = BAND_A;
+			}
+		}
+	} else {
+		if (chan->freq <= MAX_FREQUENCY_BAND_BG)
+			cfp = mwifiex_get_cfp_by_band_and_freq_from_cfg80211(
+							priv, 0, chan->freq);
+		if (!cfp) {
+			cfp = mwifiex_get_cfp_by_band_and_freq_from_cfg80211
+						  (priv, BAND_A, chan->freq);
+			if (cfp) {
+				if (adapter->adhoc_11n_enabled)
+					adapter->adhoc_start_band = BAND_A
+						| BAND_AN;
+				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 BSS mode.
+ *
+ * This function prepares the correct firmware command and
+ * issues it to set or get the BSS mode.
+ *
+ * In case the mode is changed, a deauthentication is performed
+ * first by the function automatically.
+ */
+int mwifiex_bss_ioctl_mode(struct mwifiex_private *priv,
+			   struct mwifiex_wait_queue *wait,
+			   u16 action, int *mode)
+{
+	int ret = 0;
+
+	if (!mode)
+		return -1;
+
+	if (action == HostCmd_ACT_GEN_GET) {
+		*mode = priv->bss_mode;
+		return 0;
+	}
+
+	if ((priv->bss_mode == *mode) || (*mode == MWIFIEX_BSS_MODE_AUTO)) {
+		dev_dbg(priv->adapter->dev,
+			"info: Already set to required mode! No change!\n");
+		priv->bss_mode = *mode;
+		return 0;
+	}
+
+	ret = mwifiex_deauthenticate(priv, wait, NULL);
+
+	priv->sec_info.authentication_mode = MWIFIEX_AUTH_MODE_OPEN;
+	priv->bss_mode = *mode;
+	if (priv->bss_mode != MWIFIEX_BSS_MODE_AUTO) {
+		ret = mwifiex_prepare_cmd(priv, HostCmd_CMD_SET_BSS_MODE,
+					  HostCmd_ACT_GEN_SET, 0, wait, NULL);
+		if (!ret)
+			ret = -EINPROGRESS;
+	}
+
+	return ret;
+}
+
+/*
+ * 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,
+					  struct mwifiex_wait_queue *wait,
+					  u16 action, u16 *channel)
+{
+	int ret = 0;
+
+	if (action == HostCmd_ACT_GEN_GET) {
+		if (!priv->media_connected) {
+			*channel = priv->adhoc_channel;
+			return ret;
+		}
+	} else {
+		priv->adhoc_channel = (u8) *channel;
+	}
+
+	/* Send request to firmware */
+	ret = mwifiex_prepare_cmd(priv, HostCmd_CMD_802_11_RF_CHANNEL,
+				  action, 0, wait, channel);
+	if (!ret)
+		ret = -EINPROGRESS;
+
+	return ret;
+}
+
+/*
+ * IOCTL request handler to find a particular BSS.
+ *
+ * The BSS can be searched with either a BSSID or a SSID. If none of
+ * these are provided, just the best BSS (best RSSI) is returned.
+ */
+int mwifiex_bss_ioctl_find_bss(struct mwifiex_private *priv,
+			       struct mwifiex_wait_queue *wait,
+			       struct mwifiex_ssid_bssid *ssid_bssid)
+{
+	struct mwifiex_adapter *adapter = priv->adapter;
+	int ret = 0;
+	struct mwifiex_bssdescriptor *bss_desc;
+	u8 zero_mac[ETH_ALEN] = { 0, 0, 0, 0, 0, 0 };
+	u8 mac[ETH_ALEN];
+	int i = 0;
+
+	if (memcmp(ssid_bssid->bssid, zero_mac, sizeof(zero_mac))) {
+		i = mwifiex_find_bssid_in_list(priv,
+					       (u8 *) ssid_bssid->bssid,
+					       priv->bss_mode);
+		if (i < 0) {
+			memcpy(mac, ssid_bssid->bssid, sizeof(mac));
+			dev_err(adapter->dev, "cannot find bssid %pM\n", mac);
+			return -1;
+		}
+		bss_desc = &adapter->scan_table[i];
+		memcpy(&ssid_bssid->ssid, &bss_desc->ssid,
+				sizeof(struct mwifiex_802_11_ssid));
+	} else if (ssid_bssid->ssid.ssid_len) {
+		i = mwifiex_find_ssid_in_list(priv, &ssid_bssid->ssid, NULL,
+					      priv->bss_mode);
+		if (i < 0) {
+			dev_err(adapter->dev, "cannot find ssid %s\n",
+					ssid_bssid->ssid.ssid);
+			return -1;
+		}
+		bss_desc = &adapter->scan_table[i];
+		memcpy(ssid_bssid->bssid, bss_desc->mac_address, ETH_ALEN);
+	} else {
+		ret = mwifiex_find_best_network(priv, ssid_bssid);
+	}
+
+	return ret;
+}
+
+/*
+ * 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
+mwifiex_drv_change_adhoc_chan(struct mwifiex_private *priv, int channel)
+{
+	int ret = 0;
+	int status = 0;
+	struct mwifiex_bss_info bss_info;
+	struct mwifiex_wait_queue *wait = NULL;
+	u8 wait_option = MWIFIEX_IOCTL_WAIT;
+	struct mwifiex_ssid_bssid ssid_bssid;
+	u16 curr_chan = 0;
+
+	memset(&bss_info, 0, sizeof(bss_info));
+
+	/* Get BSS information */
+	if (mwifiex_get_bss_info(priv, &bss_info))
+		return -1;
+
+	/* Allocate wait buffer */
+	wait = mwifiex_alloc_fill_wait_queue(priv, wait_option);
+	if (!wait)
+		return -ENOMEM;
+
+	/* Get current channel */
+	status = mwifiex_bss_ioctl_ibss_channel(priv, wait, HostCmd_ACT_GEN_GET,
+						&curr_chan);
+
+	if (mwifiex_request_ioctl(priv, wait, status, wait_option)) {
+		ret = -1;
+		goto done;
+	}
+	if (curr_chan == channel) {
+		ret = 0;
+		goto done;
+	}
+	dev_dbg(priv->adapter->dev, "cmd: updating channel from %d to %d\n",
+			curr_chan, channel);
+
+	if (!bss_info.media_connected) {
+		ret = 0;
+		goto done;
+	}
+
+	/* Do disonnect */
+	memset(&ssid_bssid, 0, ETH_ALEN);
+	status = mwifiex_bss_ioctl_stop(priv, wait, ssid_bssid.bssid);
+
+	if (mwifiex_request_ioctl(priv, wait, status, wait_option)) {
+		ret = -1;
+		goto done;
+	}
+
+	status = mwifiex_bss_ioctl_ibss_channel(priv, wait, HostCmd_ACT_GEN_SET,
+						(u16 *) &channel);
+
+	if (mwifiex_request_ioctl(priv, wait, status, wait_option)) {
+		ret = -1;
+		goto done;
+	}
+
+	/* Do specific SSID scanning */
+	if (mwifiex_request_scan(priv, wait_option, &bss_info.ssid)) {
+		ret = -1;
+		goto done;
+	}
+	/* Start/Join Adhoc network */
+	memset(&ssid_bssid, 0, sizeof(struct mwifiex_ssid_bssid));
+	memcpy(&ssid_bssid.ssid, &bss_info.ssid,
+	       sizeof(struct mwifiex_802_11_ssid));
+
+	status = mwifiex_bss_ioctl_start(priv, wait, &ssid_bssid);
+
+	if (mwifiex_request_ioctl(priv, wait, status, wait_option))
+		ret = -1;
+
+done:
+	kfree(wait);
+	return ret;
+}
+
+/*
+ * IOCTL request handler to get current driver mode.
+ *
+ * This function allocates the IOCTL request buffer, fills it
+ * with requisite parameters and calls the IOCTL handler.
+ */
+int
+mwifiex_drv_get_mode(struct mwifiex_private *priv, u8 wait_option)
+{
+	struct mwifiex_wait_queue *wait = NULL;
+	int status = 0;
+	int mode = -1;
+
+	/* Allocate wait buffer */
+	wait = mwifiex_alloc_fill_wait_queue(priv, wait_option);
+	if (!wait)
+		return -1;
+
+	status = mwifiex_bss_ioctl_mode(priv, wait, HostCmd_ACT_GEN_GET, &mode);
+
+	status = mwifiex_request_ioctl(priv, wait, status, wait_option);
+
+	if (wait && (status != -EINPROGRESS))
+		kfree(wait);
+	return mode;
+}
+
+/*
+ * 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_wait_queue *wait,
+					     struct mwifiex_rate_cfg *rate_cfg)
+{
+	struct mwifiex_adapter *adapter = priv->adapter;
+	int ret = 0;
+
+	rate_cfg->is_rate_auto = priv->is_data_rate_auto;
+	if (!priv->media_connected) {
+		switch (adapter->config_bands) {
+		case BAND_B:
+			/* Return the lowest supported rate for B band */
+			rate_cfg->rate = supported_rates_b[0] & 0x7f;
+			break;
+		case BAND_G:
+		case BAND_G | BAND_GN:
+			/* Return the lowest supported rate for G band */
+			rate_cfg->rate = supported_rates_g[0] & 0x7f;
+			break;
+		case BAND_B | BAND_G:
+		case BAND_A | BAND_B | BAND_G:
+		case BAND_A | BAND_B:
+		case BAND_A | BAND_B | BAND_G | BAND_AN | BAND_GN:
+		case BAND_B | BAND_G | BAND_GN:
+			/* Return the lowest supported rate for BG band */
+			rate_cfg->rate = supported_rates_bg[0] & 0x7f;
+			break;
+		case BAND_A:
+		case BAND_A | BAND_G:
+		case BAND_A | BAND_G | BAND_AN | BAND_GN:
+		case BAND_A | BAND_AN:
+			/* Return the lowest supported rate for A band */
+			rate_cfg->rate = supported_rates_a[0] & 0x7f;
+			break;
+		case BAND_GN:
+			/* Return the lowest supported rate for N band */
+			rate_cfg->rate = supported_rates_n[0] & 0x7f;
+			break;
+		default:
+			dev_warn(adapter->dev, "invalid band %#x\n",
+			       adapter->config_bands);
+			break;
+		}
+	} else {
+		/* Send request to firmware */
+		ret = mwifiex_prepare_cmd(priv,
+					  HostCmd_CMD_802_11_TX_RATE_QUERY,
+					  HostCmd_ACT_GEN_GET, 0, wait, NULL);
+		if (!ret)
+			ret = -EINPROGRESS;
+	}
+
+	return ret;
+}
+
+/*
+ * 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_wait_queue *wait,
+					     struct mwifiex_rate_cfg *rate_cfg)
+{
+	u8 rates[MWIFIEX_SUPPORTED_RATES];
+	u8 *rate = NULL;
+	int rate_index = 0;
+	u16 bitmap_rates[MAX_BITMAP_RATES_SIZE];
+	u32 i = 0;
+	int ret = 0;
+	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;
+		}
+		if (!rate[i] || (i == MWIFIEX_SUPPORTED_RATES)) {
+			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));
+
+		rate_index =
+			mwifiex_data_rate_to_index(adapter, rate_cfg->rate);
+
+		/* 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);
+		}
+	}
+
+	/* Send request to firmware */
+	ret = mwifiex_prepare_cmd(priv, HostCmd_CMD_TX_RATE_CFG,
+				  HostCmd_ACT_GEN_SET, 0, wait, bitmap_rates);
+	if (!ret)
+		ret = -EINPROGRESS;
+
+	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_wait_queue *wait,
+				  struct mwifiex_rate_cfg *rate_cfg)
+{
+	int status = 0;
+
+	if (!rate_cfg)
+		return -1;
+
+	if (rate_cfg->action == HostCmd_ACT_GEN_GET)
+		status = mwifiex_rate_ioctl_get_rate_value(
+				priv, wait, rate_cfg);
+	else
+		status = mwifiex_rate_ioctl_set_rate_value(
+				priv, wait, rate_cfg);
+
+	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)
+{
+	int ret = 0;
+	struct mwifiex_wait_queue *wait = NULL;
+	u8 wait_option = MWIFIEX_IOCTL_WAIT;
+
+	/* Allocate wait buffer */
+	wait = mwifiex_alloc_fill_wait_queue(priv, wait_option);
+	if (!wait)
+		return -ENOMEM;
+
+	memset(rate, 0, sizeof(struct mwifiex_rate_cfg));
+	rate->action = HostCmd_ACT_GEN_GET;
+	ret = mwifiex_rate_ioctl_cfg(priv, wait, rate);
+
+	ret = mwifiex_request_ioctl(priv, wait, ret, wait_option);
+	if (!ret) {
+		if (rate && rate->is_rate_auto)
+			rate->rate = mwifiex_index_to_data_rate(priv->adapter,
+					priv->tx_rate, priv->tx_htinfo);
+		else if (rate)
+			rate->rate = priv->data_rate;
+	} else {
+		ret = -1;
+	}
+
+	kfree(wait);
+	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
+ */
+static int mwifiex_power_ioctl_set_power(struct mwifiex_private *priv,
+					 struct mwifiex_wait_queue *wait,
+					 struct mwifiex_power_cfg *power_cfg)
+{
+	int ret = 0;
+	struct host_cmd_ds_txpwr_cfg *txp_cfg = NULL;
+	struct mwifiex_types_power_group *pg_tlv = NULL;
+	struct mwifiex_power_group *pg = NULL;
+	u8 *buf = NULL;
+	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"
+					" is out of range (%d dBm-%d dBm)\n",
+					dbm, priv->min_tx_power_level,
+					priv->max_tx_power_level);
+			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",
+				__func__);
+		return -1;
+	}
+
+	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);
+		pg_tlv = (struct mwifiex_types_power_group *) (buf +
+				sizeof(struct host_cmd_ds_txpwr_cfg));
+		pg_tlv->type = TLV_TYPE_POWER_GROUP;
+		pg_tlv->length = 4 * sizeof(struct mwifiex_power_group);
+		pg = (struct mwifiex_power_group *) (buf +
+				sizeof(struct host_cmd_ds_txpwr_cfg) +
+				sizeof(struct mwifiex_types_power_group));
+		/* 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;
+	}
+	/* Send request to firmware */
+	ret = mwifiex_prepare_cmd(priv, HostCmd_CMD_TXPWR_CFG,
+				  HostCmd_ACT_GEN_SET, 0, wait, buf);
+	if (!ret)
+		ret = -EINPROGRESS;
+	kfree(buf);
+
+	return ret;
+}
+
+/*
+ * IOCTL request handler to get power save mode.
+ *
+ * This function prepares the correct firmware command and
+ * issues it.
+ */
+static int mwifiex_pm_ioctl_ps_mode(struct mwifiex_private *priv,
+				    struct mwifiex_wait_queue *wait,
+				    u32 *ps_mode, u16 action)
+{
+	int ret = 0;
+	struct mwifiex_adapter *adapter = priv->adapter;
+	u16 sub_cmd;
+
+	if (action == HostCmd_ACT_GEN_SET) {
+		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_prepare_cmd(priv, HostCmd_CMD_802_11_PS_MODE_ENH,
+					  sub_cmd, BITMAP_STA_PS, wait, NULL);
+		if ((!ret) && (sub_cmd == DIS_AUTO_PS))
+			ret = mwifiex_prepare_cmd(priv,
+					HostCmd_CMD_802_11_PS_MODE_ENH, GET_PS,
+					0, NULL, NULL);
+	} else {
+		ret = mwifiex_prepare_cmd(priv, HostCmd_CMD_802_11_PS_MODE_ENH,
+					  GET_PS, 0, wait, NULL);
+	}
+
+	if (!ret)
+		ret = -EINPROGRESS;
+
+	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",
+				priv->wpa_ie_len, priv->wpa_ie[0]);
+
+		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",
+				priv->wapi_ie_len, priv->wapi_ie[0]);
+
+		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.
+ */
+static int mwifiex_sec_ioctl_set_wapi_key(struct mwifiex_adapter *adapter,
+			       struct mwifiex_wait_queue *wait,
+			       struct mwifiex_ds_encrypt_key *encrypt_key)
+{
+	int ret = 0;
+	struct mwifiex_private *priv = adapter->priv[wait->bss_index];
+
+	ret = mwifiex_prepare_cmd(priv, HostCmd_CMD_802_11_KEY_MATERIAL,
+				  HostCmd_ACT_GEN_SET, KEY_INFO_ENABLED,
+				  wait, encrypt_key);
+	if (!ret)
+		ret = -EINPROGRESS;
+
+	return ret;
+}
+
+/*
+ * IOCTL request handler to set/get authentication mode.
+ */
+static int mwifiex_set_auth_mode(struct mwifiex_private *priv, u32 auth_mode)
+{
+	int ret = 0;
+
+	priv->sec_info.authentication_mode = auth_mode;
+	if (priv->sec_info.authentication_mode == MWIFIEX_AUTH_MODE_NETWORKEAP)
+		ret = mwifiex_set_wpa_ie_helper(priv, NULL, 0);
+
+	return ret;
+}
+
+/*
+ * IOCTL request handler to set WEP network key.
+ *
+ * This function prepares the correct firmware command and
+ * issues it, after validation checks.
+ */
+static int mwifiex_sec_ioctl_set_wep_key(struct mwifiex_adapter *adapter,
+			      struct mwifiex_wait_queue *wait,
+			      struct mwifiex_ds_encrypt_key *encrypt_key)
+{
+	int ret = 0;
+	struct mwifiex_private *priv = adapter->priv[wait->bss_index];
+	struct mwifiex_wep_key *wep_key = NULL;
+	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) {
+		priv->sec_info.wep_status = MWIFIEX_802_11_WEP_DISABLED;
+	} 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) {
+			dev_err(adapter->dev,
+				"key not set, so cannot enable it\n");
+			return -1;
+		}
+		priv->wep_key_curr_index = (u16) index;
+		priv->sec_info.wep_status = MWIFIEX_802_11_WEP_ENABLED;
+	} else {
+		wep_key = &priv->wep_key[index];
+		/* Cleanup */
+		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;
+		priv->sec_info.wep_status = MWIFIEX_802_11_WEP_ENABLED;
+	}
+	if (wep_key->key_length) {
+		/* Send request to firmware */
+		ret = mwifiex_prepare_cmd(priv, HostCmd_CMD_802_11_KEY_MATERIAL,
+					  HostCmd_ACT_GEN_SET, 0, NULL, NULL);
+		if (ret)
+			return ret;
+	}
+	if (priv->sec_info.wep_status == MWIFIEX_802_11_WEP_ENABLED)
+		priv->curr_pkt_filter |= HostCmd_ACT_MAC_WEP_ENABLE;
+	else
+		priv->curr_pkt_filter &= ~HostCmd_ACT_MAC_WEP_ENABLE;
+
+	/* Send request to firmware */
+	ret = mwifiex_prepare_cmd(priv, HostCmd_CMD_MAC_CONTROL,
+				  HostCmd_ACT_GEN_SET, 0, wait,
+				  &priv->curr_pkt_filter);
+	if (!ret)
+		ret = -EINPROGRESS;
+
+	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.
+ */
+static int mwifiex_sec_ioctl_set_wpa_key(struct mwifiex_adapter *adapter,
+			      struct mwifiex_wait_queue *wait,
+			      struct mwifiex_ds_encrypt_key *encrypt_key)
+{
+	int ret = 0;
+	struct mwifiex_private *priv = adapter->priv[wait->bss_index];
+	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 */
+	if (encrypt_key->key_len > MWIFIEX_MAX_KEY_LENGTH) {
+		dev_err(adapter->dev, "key length too long\n");
+		return -1;
+	}
+
+	if (priv->bss_mode == MWIFIEX_BSS_MODE_IBSS) {
+		/*
+		 * 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;
+		ret = mwifiex_prepare_cmd(priv, HostCmd_CMD_802_11_KEY_MATERIAL,
+					  HostCmd_ACT_GEN_SET, KEY_INFO_ENABLED,
+					  NULL, encrypt_key);
+		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);
+		ibss_key->key_param_set.key_info
+			= cpu_to_le16(KEY_INFO_TKIP_ENABLED);
+
+		/* 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)
+		/* Send request to firmware */
+		ret = mwifiex_prepare_cmd(priv, HostCmd_CMD_802_11_KEY_MATERIAL,
+					  HostCmd_ACT_GEN_SET,
+					  !(KEY_INFO_ENABLED),
+					  wait, encrypt_key);
+	else
+		/* Send request to firmware */
+		ret = mwifiex_prepare_cmd(priv, HostCmd_CMD_802_11_KEY_MATERIAL,
+					  HostCmd_ACT_GEN_SET, KEY_INFO_ENABLED,
+					  wait, encrypt_key);
+
+	if (!ret)
+		ret = -EINPROGRESS;
+
+	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_wait_queue *wait,
+			      struct mwifiex_ds_encrypt_key *encrypt_key)
+{
+	int status = 0;
+	struct mwifiex_adapter *adapter = priv->adapter;
+
+	if (encrypt_key->is_wapi_key)
+		status = mwifiex_sec_ioctl_set_wapi_key(adapter, wait,
+							encrypt_key);
+	else if (encrypt_key->key_len > WLAN_KEY_LEN_WEP104)
+		status = mwifiex_sec_ioctl_set_wpa_key(adapter, wait,
+						       encrypt_key);
+	else
+		status = mwifiex_sec_ioctl_set_wep_key(adapter, wait,
+						       encrypt_key);
+	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 set Tx power. It can be set to either auto
+ * or a fixed value.
+ *
+ * This function allocates the IOCTL request buffer, fills it
+ * with requisite parameters and calls the IOCTL handler.
+ */
+int
+mwifiex_set_tx_power(struct mwifiex_private *priv, int type, int dbm)
+{
+	struct mwifiex_power_cfg power_cfg;
+	struct mwifiex_wait_queue *wait = NULL;
+	int status = 0;
+	int ret = 0;
+
+	wait = mwifiex_alloc_fill_wait_queue(priv, MWIFIEX_IOCTL_WAIT);
+	if (!wait)
+		return -ENOMEM;
+
+	if (type == NL80211_TX_POWER_FIXED) {
+		power_cfg.is_power_auto = 0;
+		power_cfg.power_level = dbm;
+	} else {
+		power_cfg.is_power_auto = 1;
+	}
+	status = mwifiex_power_ioctl_set_power(priv, wait, &power_cfg);
+
+	ret = mwifiex_request_ioctl(priv, wait, status, MWIFIEX_IOCTL_WAIT);
+
+	kfree(wait);
+	return ret;
+}
+
+/*
+ * Sends IOCTL request to get scan table.
+ *
+ * This function allocates the IOCTL request buffer, fills it
+ * with requisite parameters and calls the IOCTL handler.
+ */
+int mwifiex_get_scan_table(struct mwifiex_private *priv, u8 wait_option,
+			   struct mwifiex_scan_resp *scan_resp)
+{
+	struct mwifiex_wait_queue *wait = NULL;
+	struct mwifiex_scan_resp scan;
+	int status = 0;
+
+	/* Allocate wait buffer */
+	wait = mwifiex_alloc_fill_wait_queue(priv, wait_option);
+	if (!wait)
+		return -ENOMEM;
+
+	status = mwifiex_scan_networks(priv, wait, HostCmd_ACT_GEN_GET,
+				       NULL, &scan);
+
+	status = mwifiex_request_ioctl(priv, wait, status, wait_option);
+	if (!status) {
+		if (scan_resp)
+			memcpy(scan_resp, &scan,
+			       sizeof(struct mwifiex_scan_resp));
+	}
+
+	if (wait && (status != -EINPROGRESS))
+		kfree(wait);
+	return status;
+}
+
+/*
+ * Sends IOCTL request to get signal information.
+ *
+ * This function allocates the IOCTL request buffer, fills it
+ * with requisite parameters and calls the IOCTL handler.
+ */
+int mwifiex_get_signal_info(struct mwifiex_private *priv, u8 wait_option,
+			    struct mwifiex_ds_get_signal *signal)
+{
+	struct mwifiex_ds_get_signal info;
+	struct mwifiex_wait_queue *wait = NULL;
+	int status = 0;
+
+	/* Allocate wait buffer */
+	wait = mwifiex_alloc_fill_wait_queue(priv, wait_option);
+	if (!wait)
+		return -ENOMEM;
+
+	info.selector = ALL_RSSI_INFO_MASK;
+
+	status = mwifiex_get_info_signal(priv, wait, &info);
+
+	status = mwifiex_request_ioctl(priv, wait, status, wait_option);
+	if (!status) {
+		if (signal)
+			memcpy(signal, &info,
+			       sizeof(struct mwifiex_ds_get_signal));
+		if (info.selector & BCN_RSSI_AVG_MASK)
+			priv->w_stats.qual.level = info.bcn_rssi_avg;
+		if (info.selector & BCN_NF_AVG_MASK)
+			priv->w_stats.qual.noise = info.bcn_nf_avg;
+	}
+
+	if (wait && (status != -EINPROGRESS))
+		kfree(wait);
+	return status;
+}
+
+/*
+ * Sends IOCTL request to set encryption mode.
+ *
+ * This function allocates the IOCTL request buffer, fills it
+ * with requisite parameters and calls the IOCTL handler.
+ */
+static int mwifiex_set_encrypt_mode(struct mwifiex_private *priv,
+				    u8 wait_option, u32 encrypt_mode)
+{
+	priv->sec_info.encryption_mode = encrypt_mode;
+	return 0;
+}
+
+/*
+ * This function set the authentication parameters. It sets both encryption
+ * mode and authentication mode, and also enables WPA if required.
+ */
+int
+mwifiex_set_auth(struct mwifiex_private *priv, int encrypt_mode,
+		 int auth_mode, int wpa_enabled)
+{
+	if (mwifiex_set_encrypt_mode(priv, MWIFIEX_IOCTL_WAIT, encrypt_mode))
+		return -EFAULT;
+
+	if (mwifiex_set_auth_mode(priv, auth_mode))
+		return -EFAULT;
+
+	return 0;
+}
+
+/*
+ * 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_wait_queue *wait = NULL;
+	struct mwifiex_ds_encrypt_key encrypt_key;
+	int status = 0;
+	int ret = 0;
+
+	wait = mwifiex_alloc_fill_wait_queue(priv, MWIFIEX_IOCTL_WAIT);
+	if (!wait)
+		return -ENOMEM;
+
+	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;
+	}
+
+	status = mwifiex_sec_ioctl_encrypt_key(priv, wait, &encrypt_key);
+
+	if (mwifiex_request_ioctl(priv, wait, status, MWIFIEX_IOCTL_WAIT))
+		ret = -EFAULT;
+
+	kfree(wait);
+	return ret;
+}
+
+/*
+ * Sends IOCTL request to set power management parameters.
+ *
+ * This function allocates the IOCTL request buffer, fills it
+ * with requisite parameters and calls the IOCTL handler.
+ */
+int
+mwifiex_drv_set_power(struct mwifiex_private *priv, bool power_on)
+{
+	int ret = 0;
+	int status = 0;
+	struct mwifiex_wait_queue *wait = NULL;
+	u32 ps_mode;
+
+	wait = mwifiex_alloc_fill_wait_queue(priv, MWIFIEX_IOCTL_WAIT);
+	if (!wait)
+		return -ENOMEM;
+
+	ps_mode = power_on;
+	status = mwifiex_pm_ioctl_ps_mode(priv, wait, &ps_mode,
+					  HostCmd_ACT_GEN_SET);
+
+	ret = mwifiex_request_ioctl(priv, wait, status, MWIFIEX_IOCTL_WAIT);
+
+	kfree(wait);
+	return ret;
+}
+
+/*
+ * 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;
+	struct mwifiex_wait_queue *wait = NULL;
+	int status = 0;
+	int ret = 0;
+	u8 wait_option = MWIFIEX_IOCTL_WAIT;
+
+	/* Allocate wait buffer */
+	wait = mwifiex_alloc_fill_wait_queue(priv, wait_option);
+	if (!wait)
+		return -ENOMEM;
+
+	/* get fw version */
+	memset(&ver_ext, 0, sizeof(struct host_cmd_ds_version_ext));
+	status = mwifiex_get_info_ver_ext(priv, wait, &ver_ext);
+
+	ret = mwifiex_request_ioctl(priv, wait, status, wait_option);
+
+	if (ret)
+		ret = -1;
+
+	kfree(wait);
+	return ret;
+}
+
+/*
+ * 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)
+{
+	int ret = 0;
+	int status = 0;
+	struct mwifiex_wait_queue *wait = NULL;
+	struct mwifiex_ds_get_stats get_log;
+	u8 wait_option = MWIFIEX_IOCTL_WAIT;
+
+	/* Allocate wait buffer */
+	wait = mwifiex_alloc_fill_wait_queue(priv, wait_option);
+	if (!wait)
+		return -ENOMEM;
+
+	memset(&get_log, 0, sizeof(struct mwifiex_ds_get_stats));
+	status = mwifiex_get_info_stats(priv, wait, &get_log);
+
+	/* Send IOCTL request to MWIFIEX */
+	ret = mwifiex_request_ioctl(priv, wait, status, wait_option);
+	if (!ret) {
+		if (log)
+			memcpy(log, &get_log, sizeof(struct
+					mwifiex_ds_get_stats));
+		priv->w_stats.discard.fragment = get_log.fcs_error;
+		priv->w_stats.discard.retries = get_log.retry;
+		priv->w_stats.discard.misc = get_log.ack_failure;
+	}
+
+	kfree(wait);
+	return ret;
+}
+
+/*
+ * 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_wait_queue *wait,
+					struct mwifiex_ds_reg_rw *reg_rw,
+					u16 action)
+{
+	int ret = 0;
+	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;
+	}
+
+	/* Send request to firmware */
+	ret = mwifiex_prepare_cmd(priv, cmd_no, action, 0, wait, reg_rw);
+
+	if (!ret)
+		ret = -EINPROGRESS;
+
+	return ret;
+}
+
+/*
+ * 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)
+{
+	int ret = 0;
+	int status = 0;
+	struct mwifiex_wait_queue *wait = NULL;
+	struct mwifiex_ds_reg_rw reg_rw;
+
+	wait = mwifiex_alloc_fill_wait_queue(priv, MWIFIEX_IOCTL_WAIT);
+	if (!wait)
+		return -ENOMEM;
+
+	reg_rw.type = cpu_to_le32(reg_type);
+	reg_rw.offset = cpu_to_le32(reg_offset);
+	reg_rw.value = cpu_to_le32(reg_value);
+	status = mwifiex_reg_mem_ioctl_reg_rw(priv, wait, &reg_rw,
+					      HostCmd_ACT_GEN_SET);
+
+	ret = mwifiex_request_ioctl(priv, wait, status, MWIFIEX_IOCTL_WAIT);
+
+	kfree(wait);
+	return ret;
+}
+
+/*
+ * 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)
+{
+	int ret = 0;
+	int status = 0;
+	struct mwifiex_wait_queue *wait = NULL;
+	struct mwifiex_ds_reg_rw reg_rw;
+
+	wait = mwifiex_alloc_fill_wait_queue(priv, MWIFIEX_IOCTL_WAIT);
+	if (!wait)
+		return -ENOMEM;
+
+	reg_rw.type = cpu_to_le32(reg_type);
+	reg_rw.offset = cpu_to_le32(reg_offset);
+	status = mwifiex_reg_mem_ioctl_reg_rw(priv, wait, &reg_rw,
+					      HostCmd_ACT_GEN_GET);
+
+	ret = mwifiex_request_ioctl(priv, wait, status, MWIFIEX_IOCTL_WAIT);
+	if (ret)
+		goto done;
+
+	*value = le32_to_cpu(reg_rw.value);
+
+done:
+	kfree(wait);
+	return ret;
+}
+
+/*
+ * IOCTL request handler to read EEPROM.
+ *
+ * This function prepares the correct firmware command and
+ * issues it.
+ */
+static int
+mwifiex_reg_mem_ioctl_read_eeprom(struct mwifiex_private *priv,
+				  struct mwifiex_wait_queue *wait,
+				  struct mwifiex_ds_read_eeprom *rd_eeprom)
+{
+	int ret = 0;
+
+	/* Send request to firmware */
+	ret = mwifiex_prepare_cmd(priv, HostCmd_CMD_802_11_EEPROM_ACCESS,
+				  HostCmd_ACT_GEN_GET, 0, wait, rd_eeprom);
+
+	if (!ret)
+		ret = -EINPROGRESS;
+
+	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)
+{
+	int ret = 0;
+	int status = 0;
+	struct mwifiex_wait_queue *wait = NULL;
+	struct mwifiex_ds_read_eeprom rd_eeprom;
+
+	wait = mwifiex_alloc_fill_wait_queue(priv, MWIFIEX_IOCTL_WAIT);
+	if (!wait)
+		return -ENOMEM;
+
+	rd_eeprom.offset = cpu_to_le16((u16) offset);
+	rd_eeprom.byte_count = cpu_to_le16((u16) bytes);
+	status = mwifiex_reg_mem_ioctl_read_eeprom(priv, wait, &rd_eeprom);
+
+	ret = mwifiex_request_ioctl(priv, wait, status, MWIFIEX_IOCTL_WAIT);
+	if (ret)
+		goto done;
+
+	memcpy(value, rd_eeprom.value, MAX_EEPROM_DATA);
+done:
+	kfree(wait);
+	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 */
+	if (((pvendor_ie->element_id == WLAN_EID_WPA)
+	     && (!memcmp(pvendor_ie->oui, wpa_oui, sizeof(wpa_oui))))
+			|| (pvendor_ie->element_id == WLAN_EID_RSN)) {
+
+		/* 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;
+		if ((pvendor_ie->element_id == WLAN_EID_VENDOR_SPECIFIC)
+				&& (!memcmp(pvendor_ie->oui, wps_oui,
+						sizeof(wps_oui)))) {
+			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,
+									ie_len);
+		/* 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,
+								gen_ie->len);
+			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;
+	int status = 0;
+
+	if (ie_len > IW_CUSTOM_MAX)
+		return -EFAULT;
+
+	gen_ie.type = MWIFIEX_IE_TYPE_GEN_IE;
+	gen_ie.len = ie_len;
+	memcpy(gen_ie.ie_data, ie, ie_len);
+	status = mwifiex_misc_ioctl_gen_ie(priv, &gen_ie, HostCmd_ACT_GEN_SET);
+	if (status)
+		return -EFAULT;
+
+	return 0;
+}