core/hdd/src/wlan_hdd_main.c

/*
 * Copyright (c) 2012-2017 The Linux Foundation. All rights reserved.
 *
 * Previously licensed under the ISC license by Qualcomm Atheros, Inc.
 *
 *
 * Permission to use, copy, modify, and/or distribute this software for
 * any purpose with or without fee is hereby granted, provided that the
 * above copyright notice and this permission notice appear in all
 * copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
 * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
 * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 * PERFORMANCE OF THIS SOFTWARE.
 */

/*
 * This file was originally distributed by Qualcomm Atheros, Inc.
 * under proprietary terms before Copyright ownership was assigned
 * to the Linux Foundation.
 */

/**
 *  DOC: wlan_hdd_main.c
 *
 *  WLAN Host Device Driver implementation
 *
 */

/* Include Files */
#include <wlan_hdd_includes.h>
#include <cds_api.h>
#include <cds_sched.h>
#include <linux/cpu.h>
#include <linux/etherdevice.h>
#include <linux/firmware.h>
#include <wlan_hdd_tx_rx.h>
#include <wni_api.h>
#include <wlan_hdd_cfg.h>
#include <wlan_ptt_sock_svc.h>
#include <dbglog_host.h>
#include <wlan_logging_sock_svc.h>
#include <wlan_hdd_wowl.h>
#include <wlan_hdd_misc.h>
#include <wlan_hdd_wext.h>
#include "wlan_hdd_trace.h"
#include "wlan_hdd_ioctl.h"
#include "wlan_hdd_ftm.h"
#include "wlan_hdd_power.h"
#include "wlan_hdd_stats.h"
#include "wlan_hdd_scan.h"
#include "qdf_types.h"
#include "qdf_trace.h"
#include <cdp_txrx_peer_ops.h>

#include <net/addrconf.h>
#include <linux/wireless.h>
#include <net/cfg80211.h>
#include <linux/inetdevice.h>
#include <net/addrconf.h>
#include "wlan_hdd_cfg80211.h"
#include "wlan_hdd_ext_scan.h"
#include "wlan_hdd_p2p.h"
#include <linux/rtnetlink.h>
#include "sap_api.h"
#include <linux/semaphore.h>
#include <linux/ctype.h>
#include <linux/compat.h>
#ifdef MSM_PLATFORM
#include <soc/qcom/subsystem_restart.h>
#endif
#include <wlan_hdd_hostapd.h>
#include <wlan_hdd_softap_tx_rx.h>
#include "cfg_api.h"
#include "qwlan_version.h"
#include "wma_types.h"
#include "wlan_hdd_tdls.h"
#ifdef FEATURE_WLAN_CH_AVOID
#include "cds_regdomain.h"
#include "cdp_txrx_flow_ctrl_v2.h"
#endif /* FEATURE_WLAN_CH_AVOID */
#include "pld_common.h"
#include "wlan_hdd_ocb.h"
#include "wlan_hdd_nan.h"
#include "wlan_hdd_debugfs.h"
#include "wlan_hdd_driver_ops.h"
#include "epping_main.h"
#include "wlan_hdd_memdump.h"

#include <wlan_hdd_ipa.h>
#include "hif.h"
#include "wma.h"
#include "cds_concurrency.h"
#include "wlan_hdd_tsf.h"
#include "wlan_hdd_green_ap.h"
#include "bmi.h"
#include <wlan_hdd_regulatory.h>
#include "ol_rx_fwd.h"
#include "wlan_hdd_lpass.h"
#include "nan_api.h"
#include <wlan_hdd_napi.h>
#include "wlan_hdd_disa.h"
#include <dispatcher_init_deinit.h>
#include "wlan_hdd_object_manager.h"

#ifdef MODULE
#define WLAN_MODULE_NAME  module_name(THIS_MODULE)
#else
#define WLAN_MODULE_NAME  "wlan"
#endif

#ifdef TIMER_MANAGER
#define TIMER_MANAGER_STR " +TIMER_MANAGER"
#else
#define TIMER_MANAGER_STR ""
#endif

#ifdef MEMORY_DEBUG
#define MEMORY_DEBUG_STR " +MEMORY_DEBUG"
#else
#define MEMORY_DEBUG_STR ""
#endif

#ifndef MODULE
static struct gwlan_loader *wlan_loader;
static ssize_t wlan_boot_cb(struct kobject *kobj,
			    struct kobj_attribute *attr,
			    const char *buf, size_t count);
struct gwlan_loader {
	bool loaded_state;
	struct kobject *boot_wlan_obj;
	struct attribute_group *attr_group;
};

static struct kobj_attribute wlan_boot_attribute =
	__ATTR(boot_wlan, 0220, NULL, wlan_boot_cb);

static struct attribute *attrs[] = {
	&wlan_boot_attribute.attr,
	NULL,
};

#define MODULE_INITIALIZED 1
#endif

/* the Android framework expects this param even though we don't use it */
#define BUF_LEN 20
static char fwpath_buffer[BUF_LEN];
static struct kparam_string fwpath = {
	.string = fwpath_buffer,
	.maxlen = BUF_LEN,
};

static char *country_code;
static int enable_11d = -1;
static int enable_dfs_chan_scan = -1;

/*
 * spinlock for synchronizing asynchronous request/response
 * (full description of use in wlan_hdd_main.h)
 */
DEFINE_SPINLOCK(hdd_context_lock);

#define WLAN_NLINK_CESIUM 30

static qdf_wake_lock_t wlan_wake_lock;

#define WOW_MAX_FILTER_LISTS 1
#define WOW_MAX_FILTERS_PER_LIST 4
#define WOW_MIN_PATTERN_SIZE 6
#define WOW_MAX_PATTERN_SIZE 64

#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 11, 0))
static const struct wiphy_wowlan_support wowlan_support_reg_init = {
	.flags = WIPHY_WOWLAN_ANY |
		 WIPHY_WOWLAN_MAGIC_PKT |
		 WIPHY_WOWLAN_DISCONNECT |
		 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
		 WIPHY_WOWLAN_GTK_REKEY_FAILURE |
		 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
		 WIPHY_WOWLAN_4WAY_HANDSHAKE |
		 WIPHY_WOWLAN_RFKILL_RELEASE,
	.n_patterns = WOW_MAX_FILTER_LISTS * WOW_MAX_FILTERS_PER_LIST,
	.pattern_min_len = WOW_MIN_PATTERN_SIZE,
	.pattern_max_len = WOW_MAX_PATTERN_SIZE,
};
#endif

/* internal function declaration */

struct sock *cesium_nl_srv_sock;

#ifdef FEATURE_WLAN_AUTO_SHUTDOWN
void wlan_hdd_auto_shutdown_cb(void);
#endif

/**
 * hdd_set_rps_cpu_mask - set RPS CPU mask for interfaces
 * @hdd_ctx: pointer to hdd_context_t
 *
 * Return: none
 */
static void hdd_set_rps_cpu_mask(hdd_context_t *hdd_ctx)
{
	hdd_adapter_t *adapter;
	hdd_adapter_list_node_t *adapter_node, *next;
	QDF_STATUS status = QDF_STATUS_SUCCESS;

	status = hdd_get_front_adapter(hdd_ctx, &adapter_node);
	while (NULL != adapter_node && QDF_STATUS_SUCCESS == status) {
		adapter = adapter_node->pAdapter;
		if (NULL != adapter)
			hdd_send_rps_ind(adapter);
		status = hdd_get_next_adapter(hdd_ctx, adapter_node, &next);
		adapter_node = next;
	}
}

/**
 * wlan_hdd_txrx_pause_cb() - pause callback from txrx layer
 * @vdev_id: vdev_id
 * @action: action type
 * @reason: reason type
 *
 * Return: none
 */
void wlan_hdd_txrx_pause_cb(uint8_t vdev_id,
		enum netif_action_type action, enum netif_reason_type reason)
{
	hdd_context_t *hdd_ctx = cds_get_context(QDF_MODULE_ID_HDD);
	hdd_adapter_t *adapter;

	if (!hdd_ctx) {
		hdd_err("hdd ctx is NULL");
		return;
	}
	adapter = hdd_get_adapter_by_vdev(hdd_ctx, vdev_id);

	wlan_hdd_netif_queue_control(adapter, action, reason);
	return;
}

/*
 * Store WLAN driver version info in a global variable such that crash debugger
 * can extract it from driver debug symbol and crashdump for post processing
 */
uint8_t g_wlan_driver_version[] = QWLAN_VERSIONSTR;

/**
 * hdd_device_mode_to_string() - return string conversion of device mode
 * @device_mode: device mode
 *
 * This utility function helps log string conversion of device mode.
 *
 * Return: string conversion of device mode, if match found;
 *	   "Unknown" otherwise.
 */
const char *hdd_device_mode_to_string(uint8_t device_mode)
{
	switch (device_mode) {
	CASE_RETURN_STRING(QDF_STA_MODE);
	CASE_RETURN_STRING(QDF_SAP_MODE);
	CASE_RETURN_STRING(QDF_P2P_CLIENT_MODE);
	CASE_RETURN_STRING(QDF_P2P_GO_MODE);
	CASE_RETURN_STRING(QDF_FTM_MODE);
	CASE_RETURN_STRING(QDF_IBSS_MODE);
	CASE_RETURN_STRING(QDF_P2P_DEVICE_MODE);
	CASE_RETURN_STRING(QDF_OCB_MODE);
	CASE_RETURN_STRING(QDF_NDI_MODE);
	default:
		return "Unknown";
	}
}

/**
 * hdd_validate_channel_and_bandwidth() - Validate the channel-bandwidth combo
 * @adapter: HDD adapter
 * @chan_number: Channel number
 * @chan_bw: Bandwidth
 *
 * Checks if the given bandwidth is valid for the given channel number.
 *
 * Return: 0 for success, non-zero for failure
 */
int hdd_validate_channel_and_bandwidth(hdd_adapter_t *adapter,
		uint32_t chan_number,
		enum phy_ch_width chan_bw)
{
	uint8_t chan[WNI_CFG_VALID_CHANNEL_LIST_LEN];
	uint32_t len = WNI_CFG_VALID_CHANNEL_LIST_LEN, i;
	bool found = false;
	tHalHandle hal;

	hal = WLAN_HDD_GET_HAL_CTX(adapter);
	if (!hal) {
		hdd_err("Invalid HAL context");
		return -EINVAL;
	}

	if (0 != sme_cfg_get_str(hal, WNI_CFG_VALID_CHANNEL_LIST, chan, &len)) {
		hdd_err("No valid channel list");
		return -EOPNOTSUPP;
	}

	for (i = 0; i < len; i++) {
		if (chan[i] == chan_number) {
			found = true;
			break;
		}
	}

	if (found == false) {
		hdd_err("Channel not in driver's valid channel list");
		return -EOPNOTSUPP;
	}

	if ((!CDS_IS_CHANNEL_24GHZ(chan_number)) &&
			(!CDS_IS_CHANNEL_5GHZ(chan_number))) {
		hdd_err("CH %d is not in 2.4GHz or 5GHz", chan_number);
		return -EINVAL;
	}

	if (CDS_IS_CHANNEL_24GHZ(chan_number)) {
		if (chan_bw == CH_WIDTH_80MHZ) {
			hdd_err("BW80 not possible in 2.4GHz band");
			return -EINVAL;
		}
		if ((chan_bw != CH_WIDTH_20MHZ) && (chan_number == 14) &&
				(chan_bw != CH_WIDTH_MAX)) {
			hdd_err("Only BW20 possible on channel 14");
			return -EINVAL;
		}
	}

	if (CDS_IS_CHANNEL_5GHZ(chan_number)) {
		if ((chan_bw != CH_WIDTH_20MHZ) && (chan_number == 165) &&
				(chan_bw != CH_WIDTH_MAX)) {
			hdd_err("Only BW20 possible on channel 165");
			return -EINVAL;
		}
	}

	return 0;
}

static int __hdd_netdev_notifier_call(struct notifier_block *nb,
				    unsigned long state, void *data)
{
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 11, 0))
	struct netdev_notifier_info *dev_notif_info = data;
	struct net_device *dev = dev_notif_info->dev;
#else
	struct net_device *dev = data;
#endif
	hdd_adapter_t *adapter = WLAN_HDD_GET_PRIV_PTR(dev);
	hdd_context_t *hdd_ctx;

	ENTER_DEV(dev);

	/* Make sure that this callback corresponds to our device. */
	if ((strncmp(dev->name, "wlan", 4)) && (strncmp(dev->name, "p2p", 3)))
		return NOTIFY_DONE;

	if ((adapter->magic != WLAN_HDD_ADAPTER_MAGIC) ||
	    (adapter->dev != dev)) {
		hdd_err("device adapter is not matching!!!");
		return NOTIFY_DONE;
	}

	if (!dev->ieee80211_ptr) {
		hdd_err("ieee80211_ptr is NULL!!!");
		return NOTIFY_DONE;
	}

	hdd_ctx = WLAN_HDD_GET_CTX(adapter);
	if (NULL == hdd_ctx) {
		hdd_alert("HDD Context Null Pointer");
		QDF_ASSERT(0);
		return NOTIFY_DONE;
	}
	if (cds_is_driver_recovering())
		return NOTIFY_DONE;

	hdd_notice("%s New Net Device State = %lu",
	       dev->name, state);

	switch (state) {
	case NETDEV_REGISTER:
		break;

	case NETDEV_UNREGISTER:
		break;

	case NETDEV_UP:
		sme_ch_avoid_update_req(hdd_ctx->hHal);
		break;

	case NETDEV_DOWN:
		break;

	case NETDEV_CHANGE:
		if (true == adapter->isLinkUpSvcNeeded)
			complete(&adapter->linkup_event_var);
		break;

	case NETDEV_GOING_DOWN:
		if (adapter->scan_info.mScanPending != false) {
			unsigned long rc;
			INIT_COMPLETION(adapter->scan_info.
					abortscan_event_var);
			hdd_abort_mac_scan(adapter->pHddCtx,
					   adapter->sessionId,
					   eCSR_SCAN_ABORT_DEFAULT);
			rc = wait_for_completion_timeout(
				&adapter->scan_info.abortscan_event_var,
				msecs_to_jiffies(WLAN_WAIT_TIME_ABORTSCAN));
			if (!rc) {
				hdd_err("Timeout occurred while waiting for abortscan");
			}
		} else {
			hdd_notice("Scan is not Pending from user");
		}
		break;

	default:
		break;
	}

	return NOTIFY_DONE;
}

/**
 * hdd_netdev_notifier_call() - netdev notifier callback function
 * @nb: pointer to notifier block
 * @state: state
 * @ndev: ndev pointer
 *
 * Return: 0 on success, error number otherwise.
 */
static int hdd_netdev_notifier_call(struct notifier_block *nb,
					unsigned long state,
					void *ndev)
{
	int ret;

	cds_ssr_protect(__func__);
	ret = __hdd_netdev_notifier_call(nb, state, ndev);
	cds_ssr_unprotect(__func__);

	return ret;
}

struct notifier_block hdd_netdev_notifier = {
	.notifier_call = hdd_netdev_notifier_call,
};

/* variable to hold the insmod parameters */
static int con_mode;

/* Variable to hold connection mode including module parameter con_mode */
static int curr_con_mode;

/**
 * hdd_map_nl_chan_width() - Map NL channel width to internal representation
 * @ch_width: NL channel width
 *
 * Converts the NL channel width to the driver's internal representation
 *
 * Return: Converted channel width. In case of non matching NL channel width,
 * CH_WIDTH_MAX will be returned.
 */
enum phy_ch_width hdd_map_nl_chan_width(enum nl80211_chan_width ch_width)
{
	switch (ch_width) {
	case NL80211_CHAN_WIDTH_20_NOHT:
	case NL80211_CHAN_WIDTH_20:
		return CH_WIDTH_20MHZ;
	case NL80211_CHAN_WIDTH_40:
		return CH_WIDTH_40MHZ;
		break;
	case NL80211_CHAN_WIDTH_80:
		return CH_WIDTH_80MHZ;
	case NL80211_CHAN_WIDTH_80P80:
		return CH_WIDTH_80P80MHZ;
	case NL80211_CHAN_WIDTH_160:
		return CH_WIDTH_160MHZ;
	case NL80211_CHAN_WIDTH_5:
		return CH_WIDTH_5MHZ;
	case NL80211_CHAN_WIDTH_10:
		return CH_WIDTH_10MHZ;
	default:
		hdd_err("Invalid channel width %d, setting to default",
				ch_width);
		return CH_WIDTH_INVALID;
	}
}

/* wlan_hdd_find_opclass() - Find operating class for a channel
 * @hal: handler to HAL
 * @channel: channel id
 * @bw_offset: bandwidth offset
 *
 * Function invokes sme api to find the operating class
 *
 * Return: operating class
 */
uint8_t wlan_hdd_find_opclass(tHalHandle hal, uint8_t channel,
				uint8_t bw_offset)
{
	uint8_t opclass = 0;

	sme_get_opclass(hal, channel, bw_offset, &opclass);
	return opclass;
}

/**
 * hdd_qdf_trace_enable() - configure initial QDF Trace enable
 * @moduleId:	Module whose trace level is being configured
 * @bitmask:	Bitmask of log levels to be enabled
 *
 * Called immediately after the cfg.ini is read in order to configure
 * the desired trace levels.
 *
 * Return: None
 */
static void hdd_qdf_trace_enable(QDF_MODULE_ID moduleId, uint32_t bitmask)
{
	QDF_TRACE_LEVEL level;

	/*
	 * if the bitmask is the default value, then a bitmask was not
	 * specified in cfg.ini, so leave the logging level alone (it
	 * will remain at the "compiled in" default value)
	 */
	if (CFG_QDF_TRACE_ENABLE_DEFAULT == bitmask) {
		return;
	}

	/* a mask was specified.  start by disabling all logging */
	qdf_trace_set_value(moduleId, QDF_TRACE_LEVEL_NONE, 0);

	/* now cycle through the bitmask until all "set" bits are serviced */
	level = QDF_TRACE_LEVEL_FATAL;
	while (0 != bitmask) {
		if (bitmask & 1) {
			qdf_trace_set_value(moduleId, level, 1);
		}
		level++;
		bitmask >>= 1;
	}
}

/**
 * wlan_hdd_validate_context() - check the HDD context
 * @hdd_ctx:	HDD context pointer
 *
 * Return: 0 if the context is valid. Error code otherwise
 */
int wlan_hdd_validate_context(hdd_context_t *hdd_ctx)
{
	if (NULL == hdd_ctx || NULL == hdd_ctx->config) {
		hdd_err("%pS HDD context is Null", (void *)_RET_IP_);
		return -ENODEV;
	}

	if (cds_is_driver_recovering()) {
		hdd_err("%pS Recovery in Progress. State: 0x%x Ignore!!!",
			(void *)_RET_IP_, cds_get_driver_state());
		return -EAGAIN;
	}

	if (cds_is_load_or_unload_in_progress()) {
		hdd_err("%pS Unloading/Loading in Progress. Ignore!!!: 0x%x",
			(void *)_RET_IP_, cds_get_driver_state());
		return -EAGAIN;
	}

	if (hdd_ctx->start_modules_in_progress ||
	    hdd_ctx->stop_modules_in_progress) {
			hdd_err("%pS Start/Stop Modules in progress. Ignore!!!",
				(void *)_RET_IP_);
		return -EAGAIN;
	}

	return 0;
}

/**
 * hdd_set_ibss_power_save_params() - update IBSS Power Save params to WMA.
 * @hdd_adapter_t Hdd adapter.
 *
 * This function sets the IBSS power save config parameters to WMA
 * which will send it to firmware if FW supports IBSS power save
 * before vdev start.
 *
 * Return: QDF_STATUS QDF_STATUS_SUCCESS on Success and QDF_STATUS_E_FAILURE
 *         on failure.
 */
QDF_STATUS hdd_set_ibss_power_save_params(hdd_adapter_t *adapter)
{
	int ret;
	hdd_context_t *hdd_ctx = WLAN_HDD_GET_CTX(adapter);

	if (hdd_ctx == NULL) {
		hdd_err("HDD context is null");
		return QDF_STATUS_E_FAILURE;
	}

	ret = wma_cli_set_command(adapter->sessionId,
				  WMA_VDEV_IBSS_SET_ATIM_WINDOW_SIZE,
				  hdd_ctx->config->ibssATIMWinSize,
				  VDEV_CMD);
	if (0 != ret) {
		hdd_err("WMA_VDEV_IBSS_SET_ATIM_WINDOW_SIZE failed %d", ret);
		return QDF_STATUS_E_FAILURE;
	}

	ret = wma_cli_set_command(adapter->sessionId,
				  WMA_VDEV_IBSS_SET_POWER_SAVE_ALLOWED,
				  hdd_ctx->config->isIbssPowerSaveAllowed,
				  VDEV_CMD);
	if (0 != ret) {
		hdd_err("WMA_VDEV_IBSS_SET_POWER_SAVE_ALLOWED failed %d",
			ret);
		return QDF_STATUS_E_FAILURE;
	}

	ret = wma_cli_set_command(adapter->sessionId,
				  WMA_VDEV_IBSS_SET_POWER_COLLAPSE_ALLOWED,
				  hdd_ctx->config->
				  isIbssPowerCollapseAllowed, VDEV_CMD);
	if (0 != ret) {
		hdd_err("WMA_VDEV_IBSS_SET_POWER_COLLAPSE_ALLOWED failed %d",
			ret);
		return QDF_STATUS_E_FAILURE;
	}

	ret = wma_cli_set_command(adapter->sessionId,
				  WMA_VDEV_IBSS_SET_AWAKE_ON_TX_RX,
				  hdd_ctx->config->isIbssAwakeOnTxRx,
				  VDEV_CMD);
	if (0 != ret) {
		hdd_err("WMA_VDEV_IBSS_SET_AWAKE_ON_TX_RX failed %d", ret);
		return QDF_STATUS_E_FAILURE;
	}

	ret = wma_cli_set_command(adapter->sessionId,
				  WMA_VDEV_IBSS_SET_INACTIVITY_TIME,
				  hdd_ctx->config->ibssInactivityCount,
				  VDEV_CMD);
	if (0 != ret) {
		hdd_err("WMA_VDEV_IBSS_SET_INACTIVITY_TIME failed %d", ret);
		return QDF_STATUS_E_FAILURE;
	}

	ret = wma_cli_set_command(adapter->sessionId,
				  WMA_VDEV_IBSS_SET_TXSP_END_INACTIVITY_TIME,
				  hdd_ctx->config->ibssTxSpEndInactivityTime,
				  VDEV_CMD);
	if (0 != ret) {
		hdd_err("WMA_VDEV_IBSS_SET_TXSP_END_INACTIVITY_TIME failed %d",
			ret);
		return QDF_STATUS_E_FAILURE;
	}

	ret = wma_cli_set_command(adapter->sessionId,
				  WMA_VDEV_IBSS_PS_SET_WARMUP_TIME_SECS,
				  hdd_ctx->config->ibssPsWarmupTime,
				  VDEV_CMD);
	if (0 != ret) {
		hdd_err("WMA_VDEV_IBSS_PS_SET_WARMUP_TIME_SECS failed %d",
			ret);
		return QDF_STATUS_E_FAILURE;
	}

	ret = wma_cli_set_command(adapter->sessionId,
				  WMA_VDEV_IBSS_PS_SET_1RX_CHAIN_IN_ATIM_WINDOW,
				  hdd_ctx->config->ibssPs1RxChainInAtimEnable,
				  VDEV_CMD);
	if (0 != ret) {
		hdd_err("WMA_VDEV_IBSS_PS_SET_1RX_CHAIN_IN_ATIM_WINDOW failed %d",
			ret);
		return QDF_STATUS_E_FAILURE;
	}

	return QDF_STATUS_SUCCESS;
}

#define INTF_MACADDR_MASK       0x7

/**
 * hdd_update_macaddr() - update mac address
 * @config:	hdd configuration
 * @hw_macaddr:	mac address
 *
 * Mac address for multiple virtual interface is found as following
 * i) The mac address of the first interface is just the actual hw mac address.
 * ii) MSM 3 or 4 bits of byte5 of the actual mac address are used to
 *     define the mac address for the remaining interfaces and locally
 *     admistered bit is set. INTF_MACADDR_MASK is based on the number of
 *     supported virtual interfaces, right now this is 0x07 (meaning 8
 *     interface).
 *     Byte[3] of second interface will be hw_macaddr[3](bit5..7) + 1,
 *     for third interface it will be hw_macaddr[3](bit5..7) + 2, etc.
 *
 * Return: None
 */
void hdd_update_macaddr(struct hdd_config *config,
			struct qdf_mac_addr hw_macaddr)
{
	int8_t i;
	uint8_t macaddr_b3, tmp_br3;

	qdf_mem_copy(config->intfMacAddr[0].bytes, hw_macaddr.bytes,
		     QDF_MAC_ADDR_SIZE);
	for (i = 1; i < QDF_MAX_CONCURRENCY_PERSONA; i++) {
		qdf_mem_copy(config->intfMacAddr[i].bytes, hw_macaddr.bytes,
			     QDF_MAC_ADDR_SIZE);
		macaddr_b3 = config->intfMacAddr[i].bytes[3];
		tmp_br3 = ((macaddr_b3 >> 4 & INTF_MACADDR_MASK) + i) &
			  INTF_MACADDR_MASK;
		macaddr_b3 += tmp_br3;

		/* XOR-ing bit-24 of the mac address. This will give enough
		 * mac address range before collision
		 */
		macaddr_b3 ^= (1 << 7);

		/* Set locally administered bit */
		config->intfMacAddr[i].bytes[0] |= 0x02;
		config->intfMacAddr[i].bytes[3] = macaddr_b3;
		hdd_notice("config->intfMacAddr[%d]: "
		       MAC_ADDRESS_STR, i,
		       MAC_ADDR_ARRAY(config->intfMacAddr[i].bytes));
	}
}

static void hdd_update_tgt_services(hdd_context_t *hdd_ctx,
				    struct wma_tgt_services *cfg)
{
	struct hdd_config *config = hdd_ctx->config;

	/* Set up UAPSD */
	config->apUapsdEnabled &= cfg->uapsd;

	/* 11AC mode support */
	if ((config->dot11Mode == eHDD_DOT11_MODE_11ac ||
	     config->dot11Mode == eHDD_DOT11_MODE_11ac_ONLY) && !cfg->en_11ac)
		config->dot11Mode = eHDD_DOT11_MODE_AUTO;

	/* ARP offload: override user setting if invalid  */
	config->fhostArpOffload &= cfg->arp_offload;

#ifdef FEATURE_WLAN_SCAN_PNO
	/* PNO offload */
	hdd_info("PNO Capability in f/w = %d", cfg->pno_offload);
	if (cfg->pno_offload)
		config->PnoOffload = true;
#endif
#ifdef FEATURE_WLAN_TDLS
	config->fEnableTDLSSupport &= cfg->en_tdls;
	config->fEnableTDLSOffChannel = config->fEnableTDLSOffChannel &&
						cfg->en_tdls_offchan;
	config->fEnableTDLSBufferSta = config->fEnableTDLSBufferSta &&
						cfg->en_tdls_uapsd_buf_sta;
	if (config->fTDLSUapsdMask && cfg->en_tdls_uapsd_sleep_sta) {
		config->fEnableTDLSSleepSta = true;
	} else {
		config->fEnableTDLSSleepSta = false;
	}
#endif
#ifdef WLAN_FEATURE_ROAM_OFFLOAD
	config->isRoamOffloadEnabled &= cfg->en_roam_offload;
#endif
	sme_update_tgt_services(hdd_ctx->hHal, cfg);

}

/**
 * hdd_update_vdev_nss() - sets the vdev nss
 * @hdd_ctx: HDD context
 *
 * Sets the Nss per vdev type based on INI
 *
 * Return: None
 */
static void hdd_update_vdev_nss(hdd_context_t *hdd_ctx)
{
	struct hdd_config *cfg_ini = hdd_ctx->config;
	uint8_t max_supp_nss = 1;

	if (cfg_ini->enable2x2)
		max_supp_nss = 2;

	sme_update_vdev_type_nss(hdd_ctx->hHal, max_supp_nss,
			cfg_ini->vdev_type_nss_2g, eCSR_BAND_24);

	sme_update_vdev_type_nss(hdd_ctx->hHal, max_supp_nss,
			cfg_ini->vdev_type_nss_5g, eCSR_BAND_5G);
}

static void hdd_update_tgt_ht_cap(hdd_context_t *hdd_ctx,
				  struct wma_tgt_ht_cap *cfg)
{
	QDF_STATUS status;
	uint32_t value, val32;
	uint16_t val16;
	struct hdd_config *pconfig = hdd_ctx->config;
	tSirMacHTCapabilityInfo *phtCapInfo;
	uint8_t mcs_set[SIZE_OF_SUPPORTED_MCS_SET];
	uint8_t enable_tx_stbc;

	/* check and update RX STBC */
	if (pconfig->enableRxSTBC && !cfg->ht_rx_stbc)
		pconfig->enableRxSTBC = cfg->ht_rx_stbc;

	/* get the MPDU density */
	status = sme_cfg_get_int(hdd_ctx->hHal, WNI_CFG_MPDU_DENSITY, &value);

	if (status != QDF_STATUS_SUCCESS) {
		hdd_err("could not get MPDU DENSITY");
		value = 0;
	}

	/*
	 * MPDU density:
	 * override user's setting if value is larger
	 * than the one supported by target
	 */
	if (value > cfg->mpdu_density) {
		status = sme_cfg_set_int(hdd_ctx->hHal, WNI_CFG_MPDU_DENSITY,
					 cfg->mpdu_density);

		if (status == QDF_STATUS_E_FAILURE)
			hdd_alert("could not set MPDU DENSITY to CCM");
	}

	/* get the HT capability info */
	status = sme_cfg_get_int(hdd_ctx->hHal, WNI_CFG_HT_CAP_INFO, &val32);
	if (QDF_STATUS_SUCCESS != status) {
		hdd_err("could not get HT capability info");
		return;
	}
	val16 = (uint16_t) val32;
	phtCapInfo = (tSirMacHTCapabilityInfo *) &val16;

	/* Set the LDPC capability */
	phtCapInfo->advCodingCap = cfg->ht_rx_ldpc;

	if (pconfig->ShortGI20MhzEnable && !cfg->ht_sgi_20)
		pconfig->ShortGI20MhzEnable = cfg->ht_sgi_20;

	if (pconfig->ShortGI40MhzEnable && !cfg->ht_sgi_40)
		pconfig->ShortGI40MhzEnable = cfg->ht_sgi_40;

	hdd_ctx->num_rf_chains = cfg->num_rf_chains;
	hdd_ctx->ht_tx_stbc_supported = cfg->ht_tx_stbc;

	enable_tx_stbc = pconfig->enableTxSTBC;

	if (pconfig->enable2x2 && (cfg->num_rf_chains == 2)) {
		pconfig->enable2x2 = 1;
	} else {
		pconfig->enable2x2 = 0;
		enable_tx_stbc = 0;

		/* 1x1 */
		/* Update Rx Highest Long GI data Rate */
		if (sme_cfg_set_int(hdd_ctx->hHal,
				    WNI_CFG_VHT_RX_HIGHEST_SUPPORTED_DATA_RATE,
				    VHT_RX_HIGHEST_SUPPORTED_DATA_RATE_1_1)
				== QDF_STATUS_E_FAILURE) {
			hdd_err("Could not pass on WNI_CFG_VHT_RX_HIGHEST_SUPPORTED_DATA_RATE to CCM");
		}

		/* Update Tx Highest Long GI data Rate */
		if (sme_cfg_set_int
			    (hdd_ctx->hHal,
			     WNI_CFG_VHT_TX_HIGHEST_SUPPORTED_DATA_RATE,
			     VHT_TX_HIGHEST_SUPPORTED_DATA_RATE_1_1) ==
			    QDF_STATUS_E_FAILURE) {
			hdd_err("VHT_TX_HIGHEST_SUPP_RATE_1_1 to CCM fail");
		}
	}
	if (!(cfg->ht_tx_stbc && pconfig->enable2x2))
		enable_tx_stbc = 0;
	phtCapInfo->txSTBC = enable_tx_stbc;

	val32 = val16;
	status = sme_cfg_set_int(hdd_ctx->hHal, WNI_CFG_HT_CAP_INFO, val32);
	if (status != QDF_STATUS_SUCCESS)
		hdd_alert("could not set HT capability to CCM");
#define WLAN_HDD_RX_MCS_ALL_NSTREAM_RATES 0xff
	value = SIZE_OF_SUPPORTED_MCS_SET;
	if (sme_cfg_get_str(hdd_ctx->hHal, WNI_CFG_SUPPORTED_MCS_SET, mcs_set,
			    &value) == QDF_STATUS_SUCCESS) {
		hdd_notice("Read MCS rate set");

		if (pconfig->enable2x2) {
			for (value = 0; value < cfg->num_rf_chains; value++)
				mcs_set[value] =
					WLAN_HDD_RX_MCS_ALL_NSTREAM_RATES;

			status =
				sme_cfg_set_str(hdd_ctx->hHal,
						WNI_CFG_SUPPORTED_MCS_SET,
						mcs_set,
						SIZE_OF_SUPPORTED_MCS_SET);
			if (status == QDF_STATUS_E_FAILURE)
				hdd_alert("could not set MCS SET to CCM");
		}
	}
#undef WLAN_HDD_RX_MCS_ALL_NSTREAM_RATES
}

static void hdd_update_tgt_vht_cap(hdd_context_t *hdd_ctx,
				   struct wma_tgt_vht_cap *cfg)
{
	QDF_STATUS status;
	uint32_t value = 0;
	struct hdd_config *pconfig = hdd_ctx->config;
	struct wiphy *wiphy = hdd_ctx->wiphy;
	struct ieee80211_supported_band *band_5g =
		wiphy->bands[NL80211_BAND_5GHZ];
	uint32_t temp = 0;

	if (!band_5g) {
		hdd_info("5GHz band disabled, skipping capability population");
		return;
	}

	/* Get the current MPDU length */
	status =
		sme_cfg_get_int(hdd_ctx->hHal, WNI_CFG_VHT_MAX_MPDU_LENGTH,
				&value);

	if (status != QDF_STATUS_SUCCESS) {
		hdd_err("could not get MPDU LENGTH");
		value = 0;
	}

	/*
	 * VHT max MPDU length:
	 * override if user configured value is too high
	 * that the target cannot support
	 */
	if (value > cfg->vht_max_mpdu) {
		status = sme_cfg_set_int(hdd_ctx->hHal,
					 WNI_CFG_VHT_MAX_MPDU_LENGTH,
					 cfg->vht_max_mpdu);

		if (status == QDF_STATUS_E_FAILURE) {
			hdd_alert("could not set VHT MAX MPDU LENGTH");
		}
	}

	/* Get the current supported chan width */
	status = sme_cfg_get_int(hdd_ctx->hHal,
				WNI_CFG_VHT_SUPPORTED_CHAN_WIDTH_SET,
				&value);

	if (status != QDF_STATUS_SUCCESS) {
		hdd_err("could not get MPDU LENGTH");
		value = 0;
	}

	sme_cfg_get_int(hdd_ctx->hHal, WNI_CFG_VHT_BASIC_MCS_SET, &temp);
	temp = (temp & VHT_MCS_1x1) | pconfig->vhtRxMCS;

	if (pconfig->enable2x2)
		temp = (temp & VHT_MCS_2x2) | (pconfig->vhtRxMCS2x2 << 2);

	if (sme_cfg_set_int(hdd_ctx->hHal, WNI_CFG_VHT_BASIC_MCS_SET, temp) ==
				QDF_STATUS_E_FAILURE) {
		hdd_err("Could not pass VHT_BASIC_MCS_SET to CCM");
	}

	sme_cfg_get_int(hdd_ctx->hHal, WNI_CFG_VHT_RX_MCS_MAP, &temp);
	temp = (temp & VHT_MCS_1x1) | pconfig->vhtRxMCS;
	if (pconfig->enable2x2)
		temp = (temp & VHT_MCS_2x2) | (pconfig->vhtRxMCS2x2 << 2);

	if (sme_cfg_set_int(hdd_ctx->hHal, WNI_CFG_VHT_RX_MCS_MAP, temp) ==
			QDF_STATUS_E_FAILURE) {
		hdd_err("Could not pass WNI_CFG_VHT_RX_MCS_MAP to CCM");
	}

	sme_cfg_get_int(hdd_ctx->hHal, WNI_CFG_VHT_TX_MCS_MAP, &temp);
	temp = (temp & VHT_MCS_1x1) | pconfig->vhtTxMCS;
	if (pconfig->enable2x2)
		temp = (temp & VHT_MCS_2x2) | (pconfig->vhtTxMCS2x2 << 2);

	hdd_info("vhtRxMCS2x2 - %x temp - %u enable2x2 %d",
			pconfig->vhtRxMCS2x2, temp, pconfig->enable2x2);

	if (sme_cfg_set_int(hdd_ctx->hHal, WNI_CFG_VHT_TX_MCS_MAP, temp) ==
			QDF_STATUS_E_FAILURE) {
		hdd_err("Could not pass WNI_CFG_VHT_TX_MCS_MAP to CCM");
	}
	/* Get the current RX LDPC setting */
	status = sme_cfg_get_int(hdd_ctx->hHal, WNI_CFG_VHT_LDPC_CODING_CAP,
				&value);

	if (status != QDF_STATUS_SUCCESS) {
		hdd_err("could not get VHT LDPC CODING CAP");
		value = 0;
	}

	/* Set the LDPC capability */
	if (value && !cfg->vht_rx_ldpc) {
		status = sme_cfg_set_int(hdd_ctx->hHal,
					 WNI_CFG_VHT_LDPC_CODING_CAP,
					 cfg->vht_rx_ldpc);

		if (status == QDF_STATUS_E_FAILURE) {
			hdd_alert("could not set VHT LDPC CODING CAP to CCM");
		}
	}

	/* Get current GI 80 value */
	status = sme_cfg_get_int(hdd_ctx->hHal, WNI_CFG_VHT_SHORT_GI_80MHZ,
				&value);

	if (status != QDF_STATUS_SUCCESS) {
		hdd_err("could not get SHORT GI 80MHZ");
		value = 0;
	}

	/* set the Guard interval 80MHz */
	if (value && !cfg->vht_short_gi_80) {
		status = sme_cfg_set_int(hdd_ctx->hHal,
					 WNI_CFG_VHT_SHORT_GI_80MHZ,
					 cfg->vht_short_gi_80);

		if (status == QDF_STATUS_E_FAILURE) {
			hdd_alert("could not set SHORT GI 80MHZ to CCM");
		}
	}

	/* Get current GI 160 value */
	status = sme_cfg_get_int(hdd_ctx->hHal,
				 WNI_CFG_VHT_SHORT_GI_160_AND_80_PLUS_80MHZ,
				 &value);

	if (status != QDF_STATUS_SUCCESS) {
		hdd_err("could not get SHORT GI 80 & 160");
		value = 0;
	}

	/* Get VHT TX STBC cap */
	status = sme_cfg_get_int(hdd_ctx->hHal, WNI_CFG_VHT_TXSTBC, &value);

	if (status != QDF_STATUS_SUCCESS) {
		hdd_err("could not get VHT TX STBC");
		value = 0;
	}

	/* VHT TX STBC cap */
	if (value && !cfg->vht_tx_stbc) {
		status = sme_cfg_set_int(hdd_ctx->hHal, WNI_CFG_VHT_TXSTBC,
					 cfg->vht_tx_stbc);

		if (status == QDF_STATUS_E_FAILURE) {
			hdd_alert("could not set the VHT TX STBC to CCM");
		}
	}

	/* Get VHT RX STBC cap */
	status = sme_cfg_get_int(hdd_ctx->hHal, WNI_CFG_VHT_RXSTBC, &value);

	if (status != QDF_STATUS_SUCCESS) {
		hdd_err("could not get VHT RX STBC");
		value = 0;
	}

	/* VHT RX STBC cap */
	if (value && !cfg->vht_rx_stbc) {
		status = sme_cfg_set_int(hdd_ctx->hHal, WNI_CFG_VHT_RXSTBC,
					 cfg->vht_rx_stbc);

		if (status == QDF_STATUS_E_FAILURE) {
			hdd_alert("could not set the VHT RX STBC to CCM");
		}
	}

	/* Get VHT SU Beamformer cap */
	status = sme_cfg_get_int(hdd_ctx->hHal, WNI_CFG_VHT_SU_BEAMFORMER_CAP,
				 &value);

	if (status != QDF_STATUS_SUCCESS) {
		hdd_err("could not get VHT SU BEAMFORMER CAP");
		value = 0;
	}

	/* set VHT SU Beamformer cap */
	if (value && !cfg->vht_su_bformer) {
		status = sme_cfg_set_int(hdd_ctx->hHal,
					 WNI_CFG_VHT_SU_BEAMFORMER_CAP,
					 cfg->vht_su_bformer);

		if (status == QDF_STATUS_E_FAILURE) {
			hdd_alert("could not set VHT SU BEAMFORMER CAP");
		}
	}

	/* check and update SU BEAMFORMEE capabality */
	if (pconfig->enableTxBF && !cfg->vht_su_bformee)
		pconfig->enableTxBF = cfg->vht_su_bformee;

	status = sme_cfg_set_int(hdd_ctx->hHal,
				 WNI_CFG_VHT_SU_BEAMFORMEE_CAP,
				 pconfig->enableTxBF);

	if (status == QDF_STATUS_E_FAILURE) {
		hdd_alert("could not set VHT SU BEAMFORMEE CAP");
	}

	/* Get VHT MU Beamformer cap */
	status = sme_cfg_get_int(hdd_ctx->hHal, WNI_CFG_VHT_MU_BEAMFORMER_CAP,
				 &value);

	if (status != QDF_STATUS_SUCCESS) {
		hdd_err("could not get VHT MU BEAMFORMER CAP");
		value = 0;
	}

	/* set VHT MU Beamformer cap */
	if (value && !cfg->vht_mu_bformer) {
		status = sme_cfg_set_int(hdd_ctx->hHal,
					 WNI_CFG_VHT_MU_BEAMFORMER_CAP,
					 cfg->vht_mu_bformer);

		if (status == QDF_STATUS_E_FAILURE) {
			hdd_alert("could not set the VHT MU BEAMFORMER CAP to CCM");
		}
	}

	/* Get VHT MU Beamformee cap */
	status = sme_cfg_get_int(hdd_ctx->hHal, WNI_CFG_VHT_MU_BEAMFORMEE_CAP,
				 &value);

	if (status != QDF_STATUS_SUCCESS) {
		hdd_err("could not get VHT MU BEAMFORMEE CAP");
		value = 0;
	}

	/* set VHT MU Beamformee cap */
	if (value && !cfg->vht_mu_bformee) {
		status = sme_cfg_set_int(hdd_ctx->hHal,
					 WNI_CFG_VHT_MU_BEAMFORMEE_CAP,
					 cfg->vht_mu_bformee);

		if (status == QDF_STATUS_E_FAILURE) {
			hdd_alert("could not set VHT MU BEAMFORMER CAP");
		}
	}

	/* Get VHT MAX AMPDU Len exp */
	status = sme_cfg_get_int(hdd_ctx->hHal, WNI_CFG_VHT_AMPDU_LEN_EXPONENT,
				 &value);

	if (status != QDF_STATUS_SUCCESS) {
		hdd_err("could not get VHT AMPDU LEN");
		value = 0;
	}

	/*
	 * VHT max AMPDU len exp:
	 * override if user configured value is too high
	 * that the target cannot support.
	 * Even though Rome publish ampdu_len=7, it can
	 * only support 4 because of some h/w bug.
	 */

	if (value > cfg->vht_max_ampdu_len_exp) {
		status = sme_cfg_set_int(hdd_ctx->hHal,
					 WNI_CFG_VHT_AMPDU_LEN_EXPONENT,
					 cfg->vht_max_ampdu_len_exp);

		if (status == QDF_STATUS_E_FAILURE) {
			hdd_alert("could not set the VHT AMPDU LEN EXP");
		}
	}

	/* Get VHT TXOP PS CAP */
	status = sme_cfg_get_int(hdd_ctx->hHal, WNI_CFG_VHT_TXOP_PS, &value);

	if (status != QDF_STATUS_SUCCESS) {
		hdd_err("could not get VHT TXOP PS");
		value = 0;
	}

	/* set VHT TXOP PS cap */
	if (value && !cfg->vht_txop_ps) {
		status = sme_cfg_set_int(hdd_ctx->hHal, WNI_CFG_VHT_TXOP_PS,
					 cfg->vht_txop_ps);

		if (status == QDF_STATUS_E_FAILURE) {
			hdd_alert("could not set the VHT TXOP PS");
		}
	}

	if (WMI_VHT_CAP_MAX_MPDU_LEN_11454 == cfg->vht_max_mpdu)
		band_5g->vht_cap.cap |= IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454;
	else if (WMI_VHT_CAP_MAX_MPDU_LEN_7935 == cfg->vht_max_mpdu)
		band_5g->vht_cap.cap |= IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991;
	else
		band_5g->vht_cap.cap |= IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_3895;


	if (cfg->supp_chan_width & (1 << eHT_CHANNEL_WIDTH_80P80MHZ))
		band_5g->vht_cap.cap |=
			IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ;
	else if (cfg->supp_chan_width & (1 << eHT_CHANNEL_WIDTH_160MHZ))
		band_5g->vht_cap.cap |=
			IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ;

	if (cfg->vht_rx_ldpc & WMI_VHT_CAP_RX_LDPC)
		band_5g->vht_cap.cap |= IEEE80211_VHT_CAP_RXLDPC;

	if (cfg->vht_short_gi_80 & WMI_VHT_CAP_SGI_80MHZ)
		band_5g->vht_cap.cap |= IEEE80211_VHT_CAP_SHORT_GI_80;
	if (cfg->vht_short_gi_160 & WMI_VHT_CAP_SGI_160MHZ)
		band_5g->vht_cap.cap |= IEEE80211_VHT_CAP_SHORT_GI_160;

	if (cfg->vht_tx_stbc & WMI_VHT_CAP_TX_STBC)
		band_5g->vht_cap.cap |= IEEE80211_VHT_CAP_TXSTBC;

	if (cfg->vht_rx_stbc & WMI_VHT_CAP_RX_STBC_1SS)
		band_5g->vht_cap.cap |= IEEE80211_VHT_CAP_RXSTBC_1;
	if (cfg->vht_rx_stbc & WMI_VHT_CAP_RX_STBC_2SS)
		band_5g->vht_cap.cap |= IEEE80211_VHT_CAP_RXSTBC_2;
	if (cfg->vht_rx_stbc & WMI_VHT_CAP_RX_STBC_3SS)
		band_5g->vht_cap.cap |= IEEE80211_VHT_CAP_RXSTBC_3;

	band_5g->vht_cap.cap |=
		(cfg->vht_max_ampdu_len_exp <<
		 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT);

	if (cfg->vht_su_bformer & WMI_VHT_CAP_SU_BFORMER)
		band_5g->vht_cap.cap |= IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE;
	if (cfg->vht_su_bformee & WMI_VHT_CAP_SU_BFORMEE)
		band_5g->vht_cap.cap |= IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE;
	if (cfg->vht_mu_bformer & WMI_VHT_CAP_MU_BFORMER)
		band_5g->vht_cap.cap |= IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE;
	if (cfg->vht_mu_bformee & WMI_VHT_CAP_MU_BFORMEE)
		band_5g->vht_cap.cap |= IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE;

	if (cfg->vht_txop_ps & WMI_VHT_CAP_TXOP_PS)
		band_5g->vht_cap.cap |= IEEE80211_VHT_CAP_VHT_TXOP_PS;

}

/**
 * hdd_generate_macaddr_auto() - Auto-generate mac address
 * @hdd_ctx: Pointer to the HDD context
 *
 * Auto-generate mac address using device serial number.
 * Keep the first 3 bytes of OUI as before and replace
 * the last 3 bytes with the lower 3 bytes of serial number.
 *
 * Return: 0 for success
 *         Non zero failure code for errors
 */
static int hdd_generate_macaddr_auto(hdd_context_t *hdd_ctx)
{
	unsigned int serialno = 0;
	struct qdf_mac_addr mac_addr = {
		{0x00, 0x0A, 0xF5, 0x00, 0x00, 0x00}
	};

	serialno = pld_socinfo_get_serial_number(hdd_ctx->parent_dev);
	if (serialno == 0)
		return -EINVAL;

	serialno &= 0x00ffffff;

	mac_addr.bytes[3] = (serialno >> 16) & 0xff;
	mac_addr.bytes[4] = (serialno >> 8) & 0xff;
	mac_addr.bytes[5] = serialno & 0xff;

	hdd_update_macaddr(hdd_ctx->config, mac_addr);
	return 0;
}

/**
 * hdd_update_ra_rate_limit() - Update RA rate limit from target
 *  configuration to cfg_ini in HDD
 * @hdd_ctx: Pointer to hdd_ctx
 * @cfg: target configuration
 *
 * Return: None
 */
#ifdef FEATURE_WLAN_RA_FILTERING
static void hdd_update_ra_rate_limit(hdd_context_t *hdd_ctx,
				     struct wma_tgt_cfg *cfg)
{
	hdd_ctx->config->IsRArateLimitEnabled = cfg->is_ra_rate_limit_enabled;
}
#else
static void hdd_update_ra_rate_limit(hdd_context_t *hdd_ctx,
				     struct wma_tgt_cfg *cfg)
{
}
#endif

void hdd_update_tgt_cfg(void *context, void *param)
{
	hdd_context_t *hdd_ctx = (hdd_context_t *) context;
	struct wma_tgt_cfg *cfg = param;
	uint8_t temp_band_cap;
	struct cds_config_info *cds_cfg = cds_get_ini_config();
	QDF_STATUS qdf_status;

	qdf_status = hdd_create_and_store_pdev(hdd_ctx);
	if (QDF_IS_STATUS_ERROR(qdf_status)) {
		hdd_err("Pdev creation fails!");
		QDF_BUG(0);
	}

	if (cds_cfg) {
		if (hdd_ctx->config->enable_sub_20_channel_width !=
			WLAN_SUB_20_CH_WIDTH_NONE && !cfg->sub_20_support) {
			hdd_err("User requested sub 20 MHz channel width but unsupported by FW.");
			cds_cfg->sub_20_channel_width =
				WLAN_SUB_20_CH_WIDTH_NONE;
		} else {
			cds_cfg->sub_20_channel_width =
				hdd_ctx->config->enable_sub_20_channel_width;
		}
	}

	/* first store the INI band capability */
	temp_band_cap = hdd_ctx->config->nBandCapability;

	hdd_ctx->config->nBandCapability = cfg->band_cap;

	/*
	 * now overwrite the target band capability with INI
	 * setting if INI setting is a subset
	 */

	if ((hdd_ctx->config->nBandCapability == eCSR_BAND_ALL) &&
	    (temp_band_cap != eCSR_BAND_ALL))
		hdd_ctx->config->nBandCapability = temp_band_cap;
	else if ((hdd_ctx->config->nBandCapability != eCSR_BAND_ALL) &&
		 (temp_band_cap != eCSR_BAND_ALL) &&
		 (hdd_ctx->config->nBandCapability != temp_band_cap)) {
		hdd_warn("ini BandCapability not supported by the target");
	}

	if (!cds_is_driver_recovering()) {
		hdd_ctx->reg.reg_domain = cfg->reg_domain;
		hdd_ctx->reg.eeprom_rd_ext = cfg->eeprom_rd_ext;
	}

	/* This can be extended to other configurations like ht, vht cap... */

	if (!qdf_is_macaddr_zero(&cfg->hw_macaddr)) {
		hdd_update_macaddr(hdd_ctx->config, cfg->hw_macaddr);
		hdd_ctx->update_mac_addr_to_fw = false;
	} else {
		static struct qdf_mac_addr default_mac_addr = {
			{0x00, 0x0A, 0xF5, 0x89, 0x89, 0xFF}
		};
		if (qdf_is_macaddr_equal(&hdd_ctx->config->intfMacAddr[0],
					 &default_mac_addr)) {
			if (hdd_generate_macaddr_auto(hdd_ctx) != 0)
				hdd_err("Fail to auto-generate MAC, using MAC from ini file "
					MAC_ADDRESS_STR,
					MAC_ADDR_ARRAY(hdd_ctx->config->
						       intfMacAddr[0].bytes));
		} else {
			hdd_err("Invalid MAC passed from target, using MAC from ini file "
				MAC_ADDRESS_STR,
				MAC_ADDR_ARRAY(hdd_ctx->config->
					       intfMacAddr[0].bytes));
		}
		hdd_ctx->update_mac_addr_to_fw = true;
	}

	hdd_ctx->target_fw_version = cfg->target_fw_version;
	hdd_ctx->target_fw_vers_ext = cfg->target_fw_vers_ext;

	hdd_ctx->max_intf_count = cfg->max_intf_count;

	hdd_lpass_target_config(hdd_ctx, cfg);
	hdd_green_ap_target_config(hdd_ctx, cfg);

	hdd_ctx->ap_arpns_support = cfg->ap_arpns_support;
	hdd_update_tgt_services(hdd_ctx, &cfg->services);

	hdd_update_tgt_ht_cap(hdd_ctx, &cfg->ht_cap);

	hdd_update_tgt_vht_cap(hdd_ctx, &cfg->vht_cap);

	hdd_update_vdev_nss(hdd_ctx);

	hdd_ctx->config->fine_time_meas_cap &= cfg->fine_time_measurement_cap;
	hdd_ctx->fine_time_meas_cap_target = cfg->fine_time_measurement_cap;
	hdd_info("fine_time_meas_cap: 0x%x",
		hdd_ctx->config->fine_time_meas_cap);

	hdd_ctx->current_antenna_mode =
		(hdd_ctx->config->enable2x2 == 0x01) ?
		HDD_ANTENNA_MODE_2X2 : HDD_ANTENNA_MODE_1X1;
	hdd_info("Init current antenna mode: %d",
		 hdd_ctx->current_antenna_mode);

	hdd_info("Target BPF %d Host BPF %d",
		cfg->bpf_enabled, hdd_ctx->config->bpf_packet_filter_enable);
	hdd_ctx->bpf_enabled = (cfg->bpf_enabled &&
				hdd_ctx->config->bpf_packet_filter_enable);
	hdd_update_ra_rate_limit(hdd_ctx, cfg);

	/*
	 * If BPF is enabled, maxWowFilters set to WMA_STA_WOW_DEFAULT_PTRN_MAX
	 * because we need atleast WMA_STA_WOW_DEFAULT_PTRN_MAX free slots to
	 * configure the STA mode wow pattern.
	 */
	if (hdd_ctx->bpf_enabled)
		hdd_ctx->config->maxWoWFilters = WMA_STA_WOW_DEFAULT_PTRN_MAX;

	hdd_ctx->wmi_max_len = cfg->wmi_max_len;

	/* Configure NAN datapath features */
	hdd_nan_datapath_target_config(hdd_ctx, cfg);
}

/**
 * hdd_dfs_indicate_radar() - handle radar detection on current SAP channel
 * @context:	HDD context pointer
 * @param:	HDD radar indication pointer
 *
 * This function is invoked in atomic context when a radar
 * is found on the SAP current operating channel and Data Tx
 * from netif has to be stopped to honor the DFS regulations.
 * Actions: Stop the netif Tx queues,Indicate Radar present
 * in HDD context for future usage.
 *
 * Return: true to allow radar indication to host else false
 */
bool hdd_dfs_indicate_radar(void *context, void *param)
{
	hdd_context_t *hdd_ctx = (hdd_context_t *) context;
	struct wma_dfs_radar_ind *hdd_radar_event =
		(struct wma_dfs_radar_ind *)param;
	hdd_adapter_list_node_t *adapterNode = NULL, *pNext = NULL;
	hdd_adapter_t *adapter;
	QDF_STATUS status;
	hdd_ap_ctx_t *ap_ctx;

	if (!hdd_ctx || !hdd_radar_event ||
		 hdd_ctx->config->disableDFSChSwitch)
		return true;

	if (true == hdd_radar_event->dfs_radar_status) {
		if (qdf_atomic_inc_return(&hdd_ctx->dfs_radar_found) > 1) {
			/*
			 * Application already triggered channel switch
			 * on current channel, so return here.
			 */
			return false;
		}

		status = hdd_get_front_adapter(hdd_ctx, &adapterNode);
		while (NULL != adapterNode && QDF_STATUS_SUCCESS == status) {
			adapter = adapterNode->pAdapter;
			ap_ctx = WLAN_HDD_GET_AP_CTX_PTR(adapter);
			if ((QDF_SAP_MODE == adapter->device_mode ||
			     QDF_P2P_GO_MODE == adapter->device_mode) &&
			     (CHANNEL_STATE_DFS ==
			     cds_get_channel_state(ap_ctx->operatingChannel))) {
				WLAN_HDD_GET_AP_CTX_PTR(adapter)->
				dfs_cac_block_tx = true;
				hdd_info("tx blocked for session:%d",
					 adapter->sessionId);
			}

			status = hdd_get_next_adapter(hdd_ctx,
						      adapterNode,
						      &pNext);
			adapterNode = pNext;
		}
	}

	return true;
}

/**
 * hdd_is_valid_mac_address() - validate MAC address
 * @pMacAddr:	Pointer to the input MAC address
 *
 * This function validates whether the given MAC address is valid or not
 * Expected MAC address is of the format XX:XX:XX:XX:XX:XX
 * where X is the hexa decimal digit character and separated by ':'
 * This algorithm works even if MAC address is not separated by ':'
 *
 * This code checks given input string mac contains exactly 12 hexadecimal
 * digits and a separator colon : appears in the input string only after
 * an even number of hex digits.
 *
 * Return: 1 for valid and 0 for invalid
 */
bool hdd_is_valid_mac_address(const uint8_t *pMacAddr)
{
	int xdigit = 0;
	int separator = 0;
	while (*pMacAddr) {
		if (isxdigit(*pMacAddr)) {
			xdigit++;
		} else if (':' == *pMacAddr) {
			if (0 == xdigit || ((xdigit / 2) - 1) != separator)
				break;

			++separator;
		} else {
			/* Invalid MAC found */
			return 0;
		}
		++pMacAddr;
	}
	return xdigit == 12 && (separator == 5 || separator == 0);
}

/**
 * hdd_mon_mode_ether_setup() - Update monitor mode struct net_device.
 * @dev: Handle to struct net_device to be updated.
 *
 * Return: None
 */
static void hdd_mon_mode_ether_setup(struct net_device *dev)
{
	dev->header_ops         = NULL;
	dev->type               = ARPHRD_IEEE80211_RADIOTAP;
	dev->hard_header_len    = ETH_HLEN;
	dev->mtu                = ETH_DATA_LEN;
	dev->addr_len           = ETH_ALEN;
	dev->tx_queue_len       = 1000; /* Ethernet wants good queues */
	dev->flags              = IFF_BROADCAST|IFF_MULTICAST;
	dev->priv_flags        |= IFF_TX_SKB_SHARING;

	memset(dev->broadcast, 0xFF, ETH_ALEN);
}

/**
 * __hdd__mon_open() - HDD Open function
 * @dev: Pointer to net_device structure
 *
 * This is called in response to ifconfig up
 *
 * Return: 0 for success; non-zero for failure
 */
static int __hdd_mon_open(struct net_device *dev)
{
	int ret;

	ENTER_DEV(dev);
	hdd_mon_mode_ether_setup(dev);
	ret = hdd_set_mon_rx_cb(dev);
	return ret;
}

/**
 * hdd_mon_open() - Wrapper function for __hdd_mon_open to protect it from SSR
 * @dev:	Pointer to net_device structure
 *
 * This is called in response to ifconfig up
 *
 * Return: 0 for success; non-zero for failure
 */
static int hdd_mon_open(struct net_device *dev)
{
	int ret;

	cds_ssr_protect(__func__);
	ret = __hdd_mon_open(dev);
	cds_ssr_unprotect(__func__);

	return ret;
}

/**
 * hdd_start_adapter() - Wrapper function for device specific adapter
 * @adapter: pointer to HDD adapter
 *
 * This function is called to start the device specific adapter for
 * the mode passed in the adapter's device_mode.
 *
 * Return: 0 for success; non-zero for failure
 */
int hdd_start_adapter(hdd_adapter_t *adapter)
{

	int ret;
	enum tQDF_ADAPTER_MODE device_mode = adapter->device_mode;

	ENTER_DEV(adapter->dev);
	hdd_info("Start_adapter for mode : %d", adapter->device_mode);

	switch (device_mode) {
	case QDF_P2P_CLIENT_MODE:
	case QDF_P2P_DEVICE_MODE:
	case QDF_OCB_MODE:
	case QDF_STA_MODE:
	case QDF_MONITOR_MODE:
		ret = hdd_start_station_adapter(adapter);
		if (ret)
			goto err_start_adapter;
		break;
	case QDF_P2P_GO_MODE:
	case QDF_SAP_MODE:
		ret = hdd_start_ap_adapter(adapter);
		if (ret)
			goto err_start_adapter;
		break;
	case QDF_IBSS_MODE:
		/*
		 * For IBSS interface is initialized as part of
		 * hdd_init_station_mode()
		 */
		return 0;
	case QDF_FTM_MODE:
		ret = hdd_start_ftm_adapter(adapter);
		if (ret)
			goto err_start_adapter;
	break;
	default:
		hdd_err("Invalid session type %d", device_mode);
		QDF_ASSERT(0);
		goto err_start_adapter;
	}
	if (hdd_set_fw_params(adapter))
		hdd_err("Failed to set the FW params for the adapter!");

	/*
	 * Action frame registered in one adapter which will
	 * applicable to all interfaces
	 */
	wlan_hdd_cfg80211_register_frames(adapter);
	EXIT();
	return 0;
err_start_adapter:
	return -EINVAL;
}

/**
 * hdd_enable_power_management() - API to Enable Power Management
 *
 * API invokes Bus Interface Layer power management functionality
 *
 * Return: None
 */
static void hdd_enable_power_management(void)
{
	void *hif_ctx = cds_get_context(QDF_MODULE_ID_HIF);

	if (!hif_ctx) {
		hdd_err("Bus Interface Context is Invalid");
		return;
	}

	hif_enable_power_management(hif_ctx, cds_is_packet_log_enabled());
}

/**
 * hdd_disable_power_management() - API to disable Power Management
 *
 * API disable Bus Interface Layer Power management functionality
 *
 * Return: None
 */
static void hdd_disable_power_management(void)
{
	void *hif_ctx = cds_get_context(QDF_MODULE_ID_HIF);

	if (!hif_ctx) {
		hdd_err("Bus Interface Context is Invalid");
		return;
	}

	hif_disable_power_management(hif_ctx);
}

/**
 * hdd_wlan_start_modules() - Single driver state machine for starting modules
 * @hdd_ctx: HDD context
 * @adapter: HDD adapter
 * @reinit: flag to indicate from SSR or normal path
 *
 * This function maintains the driver state machine it will be invoked from
 * startup, reinit and change interface. Depending on the driver state shall
 * perform the opening of the modules.
 *
 * Return: 0 for success; non-zero for failure
 */
int hdd_wlan_start_modules(hdd_context_t *hdd_ctx, hdd_adapter_t *adapter,
			   bool reinit)
{
	int ret;
	qdf_device_t qdf_dev;
	QDF_STATUS status;
	p_cds_contextType p_cds_context;
	bool unint = false;
	void *hif_ctx;

	ENTER();

	p_cds_context = cds_get_global_context();
	if (!p_cds_context) {
		hdd_err("Global Context is NULL");
		QDF_ASSERT(0);
		return -EINVAL;
	}

	hdd_info("start modules called in  state! :%d reinit: %d",
			 hdd_ctx->driver_status, reinit);

	qdf_dev = cds_get_context(QDF_MODULE_ID_QDF_DEVICE);
	if (!qdf_dev) {
		hdd_err("QDF Device Context is Invalid return");
		return -EINVAL;
	}

	mutex_lock(&hdd_ctx->iface_change_lock);
	hdd_ctx->start_modules_in_progress = true;

	if (QDF_TIMER_STATE_RUNNING ==
	    qdf_mc_timer_get_current_state(&hdd_ctx->iface_change_timer)) {

		hdd_set_idle_ps_config(hdd_ctx, false);
		hdd_info("Interface change Timer running Stop timer");
		qdf_mc_timer_stop(&hdd_ctx->iface_change_timer);
	}

	switch (hdd_ctx->driver_status) {
	case DRIVER_MODULES_UNINITIALIZED:
		unint = true;
		/* Fall through dont add break here */
	case DRIVER_MODULES_CLOSED:
		if (!reinit && !unint) {
			ret = pld_power_on(qdf_dev->dev);
			if (ret) {
				hdd_err("Failed to Powerup the device: %d", ret);
				goto release_lock;
			}
		}
		ret = hdd_hif_open(qdf_dev->dev, qdf_dev->drv_hdl, qdf_dev->bid,
				   qdf_dev->bus_type,
				   (reinit == true) ?  HIF_ENABLE_TYPE_REINIT :
				   HIF_ENABLE_TYPE_PROBE);
		if (ret) {
			hdd_err("Failed to open hif: %d", ret);
			goto power_down;
		}

		hif_ctx = cds_get_context(QDF_MODULE_ID_HIF);
		if (!hif_ctx) {
			hdd_err("hif context is null!!");
			goto power_down;
		}

		status = ol_cds_init(qdf_dev, hif_ctx);
		if (status != QDF_STATUS_SUCCESS) {
			hdd_err("No Memory to Create BMI Context :%d", status);
			goto hif_close;
		}

		ret = hdd_update_config(hdd_ctx);
		if (ret) {
			hdd_err("Failed to update configuration :%d", ret);
			goto ol_cds_free;
		}

		status = hdd_create_and_store_psoc(hdd_ctx, DEFAULT_PSOC_ID);
		if (QDF_IS_STATUS_ERROR(status)) {
			hdd_err("Psoc creation fails!");
			goto ol_cds_free;
		}

		status = cds_open(hdd_ctx->hdd_psoc);
		if (!QDF_IS_STATUS_SUCCESS(status)) {
			hdd_err("Failed to Open CDS: %d", status);
			goto ol_cds_free;
		}

		hdd_ctx->driver_status = DRIVER_MODULES_OPENED;

		hdd_ctx->hHal = cds_get_context(QDF_MODULE_ID_SME);

		status = cds_pre_enable(hdd_ctx->pcds_context);
		if (!QDF_IS_STATUS_SUCCESS(status)) {
			hdd_err("Failed to pre-enable CDS: %d", status);
			goto close;
		}

		if (QDF_GLOBAL_FTM_MODE == hdd_get_conparam()) {
			sme_register_ftm_msg_processor(hdd_ctx->hHal,
						       hdd_ftm_mc_process_msg);
			break;
		}
		if (unint) {
			hdd_info("In phase-1 initialization  don't enable modules");
			break;
		}
	/* Fall through dont add break here */
	case DRIVER_MODULES_OPENED:
		if (!adapter) {
			hdd_alert("adapter is Null");
			goto close;
		}
		if (QDF_GLOBAL_FTM_MODE == hdd_get_conparam()) {
			hdd_err("in ftm mode, no need to configure cds modules");
			break;
		}
		if (hdd_configure_cds(hdd_ctx, adapter)) {
			hdd_err("Failed to Enable cds modules");
			goto close;
		}
		hdd_enable_power_management();
		hdd_info("Driver Modules Successfully Enabled");
		hdd_ctx->driver_status = DRIVER_MODULES_ENABLED;
		break;
	case DRIVER_MODULES_ENABLED:
		hdd_info("Driver modules already Enabled");
		break;
	default:
		hdd_err("WLAN start invoked in wrong state! :%d\n",
				hdd_ctx->driver_status);
		goto release_lock;
	}
	hdd_ctx->start_modules_in_progress = false;
	mutex_unlock(&hdd_ctx->iface_change_lock);
	EXIT();
	return 0;

close:
	cds_close(hdd_ctx->hdd_psoc, p_cds_context);

ol_cds_free:
	ol_cds_free();

hif_close:
	hdd_hif_close(p_cds_context->pHIFContext);
power_down:
	if (!reinit && !unint)
		pld_power_off(qdf_dev->dev);
release_lock:
	hdd_ctx->start_modules_in_progress = false;
	mutex_unlock(&hdd_ctx->iface_change_lock);
	EXIT();
	return -EINVAL;
}

/**
 * __hdd_open() - HDD Open function
 * @dev:	Pointer to net_device structure
 *
 * This is called in response to ifconfig up
 *
 * Return: 0 for success; non-zero for failure
 */
static int __hdd_open(struct net_device *dev)
{
	hdd_adapter_t *adapter = WLAN_HDD_GET_PRIV_PTR(dev);
	hdd_context_t *hdd_ctx = WLAN_HDD_GET_CTX(adapter);
	int ret;

	ENTER_DEV(dev);
	MTRACE(qdf_trace(QDF_MODULE_ID_HDD, TRACE_CODE_HDD_OPEN_REQUEST,
		adapter->sessionId, adapter->device_mode));

	ret = wlan_hdd_validate_context(hdd_ctx);
	if (ret)
		return ret;


	ret = hdd_wlan_start_modules(hdd_ctx, adapter, false);
	if (ret) {
		hdd_err("Failed to start WLAN modules return");
		return -ret;
	}


	if (!test_bit(SME_SESSION_OPENED, &adapter->event_flags)) {
		ret = hdd_start_adapter(adapter);
		if (ret) {
			hdd_err("Failed to start adapter :%d",
				adapter->device_mode);
			return ret;
		}
	}

	set_bit(DEVICE_IFACE_OPENED, &adapter->event_flags);
	if (hdd_conn_is_connected(WLAN_HDD_GET_STATION_CTX_PTR(adapter))) {
		hdd_info("Enabling Tx Queues");
		/* Enable TX queues only when we are connected */
		wlan_hdd_netif_queue_control(adapter,
					     WLAN_START_ALL_NETIF_QUEUE,
					     WLAN_CONTROL_PATH);
	}

	/* Enable carrier and transmit queues for NDI */
	if (WLAN_HDD_IS_NDI(adapter)) {
		hdd_notice("Enabling Tx Queues");
		wlan_hdd_netif_queue_control(adapter,
			WLAN_START_ALL_NETIF_QUEUE_N_CARRIER,
			WLAN_CONTROL_PATH);
	}

	return ret;
}


/**
 * hdd_open() - Wrapper function for __hdd_open to protect it from SSR
 * @dev:	Pointer to net_device structure
 *
 * This is called in response to ifconfig up
 *
 * Return: 0 for success; non-zero for failure
 */
static int hdd_open(struct net_device *dev)
{
	int ret;

	cds_ssr_protect(__func__);
	ret = __hdd_open(dev);
	cds_ssr_unprotect(__func__);

	return ret;
}

/**
 * __hdd_stop() - HDD stop function
 * @dev:	Pointer to net_device structure
 *
 * This is called in response to ifconfig down
 *
 * Return: 0 for success; non-zero for failure
 */
static int __hdd_stop(struct net_device *dev)
{
	hdd_adapter_t *adapter = WLAN_HDD_GET_PRIV_PTR(dev);
	hdd_context_t *hdd_ctx = WLAN_HDD_GET_CTX(adapter);
	hdd_adapter_list_node_t *adapternode = NULL, *next = NULL;
	int ret;
	bool close_modules = true;
	QDF_STATUS status;

	ENTER_DEV(dev);

	MTRACE(qdf_trace(QDF_MODULE_ID_HDD, TRACE_CODE_HDD_STOP_REQUEST,
			 adapter->sessionId, adapter->device_mode));

	ret = wlan_hdd_validate_context(hdd_ctx);
	if (0 != ret)
		return ret;

	/* Nothing to be done if the interface is not opened */
	if (false == test_bit(DEVICE_IFACE_OPENED, &adapter->event_flags)) {
		hdd_err("NETDEV Interface is not OPENED");
		return -ENODEV;
	}

	/* Make sure the interface is marked as closed */
	clear_bit(DEVICE_IFACE_OPENED, &adapter->event_flags);
	hdd_notice("Disabling OS Tx queues");

	/*
	 * Disable TX on the interface, after this hard_start_xmit() will not
	 * be called on that interface
	 */
	hdd_notice("Disabling queues");
	wlan_hdd_netif_queue_control(adapter, WLAN_NETIF_TX_DISABLE_N_CARRIER,
				   WLAN_CONTROL_PATH);

	/*
	 * NAN data interface is different in some sense. The traffic on NDI is
	 * bursty in nature and depends on the need to transfer. The service
	 * layer may down the interface after the usage and up again when
	 * required. In some sense, the NDI is expected to be available
	 * (like SAP) iface until NDI delete request is issued by the service
	 * layer. Skip BSS termination and adapter deletion for NAN Data
	 * interface (NDI).
	 */
	if (WLAN_HDD_IS_NDI(adapter))
		return 0;

	/*
	 * The interface is marked as down for outside world (aka kernel)
	 * But the driver is pretty much alive inside. The driver needs to
	 * tear down the existing connection on the netdev (session)
	 * cleanup the data pipes and wait until the control plane is stabilized
	 * for this interface. The call also needs to wait until the above
	 * mentioned actions are completed before returning to the caller.
	 * Notice that the hdd_stop_adapter is requested not to close the session
	 * That is intentional to be able to scan if it is a STA/P2P interface
	 */
	hdd_stop_adapter(hdd_ctx, adapter, true);

	/* DeInit the adapter. This ensures datapath cleanup as well */
	hdd_deinit_adapter(hdd_ctx, adapter, true);


	/*
	 * Find if any iface is up. If any iface is up then can't put device to
	 * sleep/power save mode
	 */
	status = hdd_get_front_adapter(hdd_ctx, &adapternode);
	while ((NULL != adapternode) && (QDF_STATUS_SUCCESS == status)) {
		if (test_bit(DEVICE_IFACE_OPENED,
			     &adapternode->pAdapter->event_flags)) {
			hdd_info("Still other ifaces are up cannot close modules");
			close_modules = false;
			break;
		}
		status = hdd_get_next_adapter(hdd_ctx, adapternode, &next);
		adapternode = next;

	}

	if (close_modules) {
		hdd_info("Closing all modules from the hdd_stop");
		qdf_mc_timer_start(&hdd_ctx->iface_change_timer,
				   hdd_ctx->config->iface_change_wait_time
				   * 50000);
	}

	EXIT();
	return 0;
}

/**
 * hdd_stop() - Wrapper function for __hdd_stop to protect it from SSR
 * @dev: pointer to net_device structure
 *
 * This is called in response to ifconfig down
 *
 * Return: 0 for success and error number for failure
 */
static int hdd_stop(struct net_device *dev)
{
	int ret;

	cds_ssr_protect(__func__);
	ret = __hdd_stop(dev);
	cds_ssr_unprotect(__func__);

	return ret;
}

/**
 * __hdd_uninit() - HDD uninit function
 * @dev:	Pointer to net_device structure
 *
 * This is called during the netdev unregister to uninitialize all data
 * associated with the device
 *
 * Return: None
 */
static void __hdd_uninit(struct net_device *dev)
{
	hdd_adapter_t *adapter = WLAN_HDD_GET_PRIV_PTR(dev);

	ENTER_DEV(dev);

	do {
		if (WLAN_HDD_ADAPTER_MAGIC != adapter->magic) {
			hdd_alert("Invalid magic");
			break;
		}

		if (NULL == adapter->pHddCtx) {
			hdd_alert("NULL hdd_ctx");
			break;
		}

		if (dev != adapter->dev) {
			hdd_alert("Invalid device reference");
			/*
			 * we haven't validated all cases so let this go for
			 * now
			 */
		}

		hdd_deinit_adapter(adapter->pHddCtx, adapter, true);

		/* after uninit our adapter structure will no longer be valid */
		adapter->dev = NULL;
		adapter->magic = 0;
	} while (0);

	EXIT();
}

/**
 * hdd_uninit() - Wrapper function to protect __hdd_uninit from SSR
 * @dev: pointer to net_device structure
 *
 * This is called during the netdev unregister to uninitialize all data
 * associated with the device
 *
 * Return: none
 */
static void hdd_uninit(struct net_device *dev)
{
	cds_ssr_protect(__func__);
	__hdd_uninit(dev);
	cds_ssr_unprotect(__func__);
}

static int hdd_open_cesium_nl_sock(void)
{
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 6, 0))
	struct netlink_kernel_cfg cfg = {
		.groups = WLAN_NLINK_MCAST_GRP_ID,
		.input = NULL
	};
#endif
	int ret = 0;

#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 6, 0))
	cesium_nl_srv_sock = netlink_kernel_create(&init_net, WLAN_NLINK_CESIUM,
#if (LINUX_VERSION_CODE < KERNEL_VERSION(3, 7, 0))
						   THIS_MODULE,
#endif
						   &cfg);
#else
	cesium_nl_srv_sock = netlink_kernel_create(&init_net, WLAN_NLINK_CESIUM,
						   WLAN_NLINK_MCAST_GRP_ID,
						   NULL, NULL, THIS_MODULE);
#endif

	if (cesium_nl_srv_sock == NULL) {
		hdd_err("NLINK:  cesium netlink_kernel_create failed");
		ret = -ECONNREFUSED;
	}

	return ret;
}

static void hdd_close_cesium_nl_sock(void)
{
	if (NULL != cesium_nl_srv_sock) {
		netlink_kernel_release(cesium_nl_srv_sock);
		cesium_nl_srv_sock = NULL;
	}
}

/**
 * __hdd_set_mac_address() - set the user specified mac address
 * @dev:	Pointer to the net device.
 * @addr:	Pointer to the sockaddr.
 *
 * This function sets the user specified mac address using
 * the command ifconfig wlanX hw ether <mac adress>.
 *
 * Return: 0 for success, non zero for failure
 */
static int __hdd_set_mac_address(struct net_device *dev, void *addr)
{
	hdd_adapter_t *adapter = WLAN_HDD_GET_PRIV_PTR(dev);
	hdd_context_t *hdd_ctx;
	struct sockaddr *psta_mac_addr = addr;
	QDF_STATUS qdf_ret_status = QDF_STATUS_SUCCESS;
	int ret;

	ENTER_DEV(dev);

	hdd_ctx = WLAN_HDD_GET_CTX(adapter);
	ret = wlan_hdd_validate_context(hdd_ctx);
	if (0 != ret)
		return ret;

	memcpy(&adapter->macAddressCurrent, psta_mac_addr->sa_data, ETH_ALEN);
	memcpy(dev->dev_addr, psta_mac_addr->sa_data, ETH_ALEN);

	EXIT();
	return qdf_ret_status;
}

/**
 * hdd_set_mac_address() - Wrapper function to protect __hdd_set_mac_address()
 *			function from SSR
 * @dev: pointer to net_device structure
 * @addr: Pointer to the sockaddr
 *
 * This function sets the user specified mac address using
 * the command ifconfig wlanX hw ether <mac adress>.
 *
 * Return: 0 for success.
 */
static int hdd_set_mac_address(struct net_device *dev, void *addr)
{
	int ret;

	cds_ssr_protect(__func__);
	ret = __hdd_set_mac_address(dev, addr);
	cds_ssr_unprotect(__func__);

	return ret;
}

uint8_t *wlan_hdd_get_intf_addr(hdd_context_t *hdd_ctx)
{
	int i;
	for (i = 0; i < QDF_MAX_CONCURRENCY_PERSONA; i++) {
		if (0 == ((hdd_ctx->config->intfAddrMask) & (1 << i)))
			break;
	}

	if (QDF_MAX_CONCURRENCY_PERSONA == i)
		return NULL;

	hdd_ctx->config->intfAddrMask |= (1 << i);
	return &hdd_ctx->config->intfMacAddr[i].bytes[0];
}

void wlan_hdd_release_intf_addr(hdd_context_t *hdd_ctx, uint8_t *releaseAddr)
{
	int i;
	for (i = 0; i < QDF_MAX_CONCURRENCY_PERSONA; i++) {
		if (!memcmp(releaseAddr,
			    &hdd_ctx->config->intfMacAddr[i].bytes[0],
			    6)) {
			hdd_ctx->config->intfAddrMask &= ~(1 << i);
			break;
		}
	}
	return;
}

#ifdef WLAN_FEATURE_PACKET_FILTERING
/**
 * __hdd_set_multicast_list() - set the multicast address list
 * @dev:	Pointer to the WLAN device.
 * @skb:	Pointer to OS packet (sk_buff).
 *
 * This funciton sets the multicast address list.
 *
 * Return: None
 */
static void __hdd_set_multicast_list(struct net_device *dev)
{
	hdd_adapter_t *adapter = WLAN_HDD_GET_PRIV_PTR(dev);
	int mc_count;
	int i = 0, status;
	struct netdev_hw_addr *ha;
	hdd_context_t *hdd_ctx = WLAN_HDD_GET_CTX(adapter);
	static const uint8_t ipv6_router_solicitation[]
			= {0x33, 0x33, 0x00, 0x00, 0x00, 0x02};

	ENTER_DEV(dev);

	if (QDF_GLOBAL_FTM_MODE == hdd_get_conparam())
		return;

	status = wlan_hdd_validate_context(hdd_ctx);
	if (0 != status)
		return;

	if (dev->flags & IFF_ALLMULTI) {
		hdd_notice("allow all multicast frames");
		adapter->mc_addr_list.mc_cnt = 0;
	} else {
		mc_count = netdev_mc_count(dev);
		hdd_notice("mc_count : %u", mc_count);

		if (mc_count > WLAN_HDD_MAX_MC_ADDR_LIST) {
			hdd_notice("Exceeded max MC filter addresses (%d). Allowing all MC frames by disabling MC address filtering",
				   WLAN_HDD_MAX_MC_ADDR_LIST);
			wlan_hdd_set_mc_addr_list(adapter, false);
			adapter->mc_addr_list.mc_cnt = 0;
			return;
		}

		adapter->mc_addr_list.mc_cnt = mc_count;

		netdev_for_each_mc_addr(ha, dev) {
			hdd_notice("ha_addr[%d] "MAC_ADDRESS_STR,
				i, MAC_ADDR_ARRAY(ha->addr));

			if (i == mc_count)
				break;
			/*
			 * Skip following addresses:
			 * 1)IPv6 router solicitation address
			 * 2)Any other address pattern if its set during
			 *  RXFILTER REMOVE driver command based on
			 *  addr_filter_pattern
			 */
			if ((!memcmp(ha->addr, ipv6_router_solicitation,
			   ETH_ALEN)) ||
			   (adapter->addr_filter_pattern && (!memcmp(ha->addr,
			    &adapter->addr_filter_pattern, 1)))) {
				hdd_info("MC/BC filtering Skip addr ="MAC_ADDRESS_STR,
					MAC_ADDR_ARRAY(ha->addr));
				adapter->mc_addr_list.mc_cnt--;
				continue;
			}

			memset(&(adapter->mc_addr_list.addr[i][0]), 0,
			       ETH_ALEN);
			memcpy(&(adapter->mc_addr_list.addr[i][0]), ha->addr,
			       ETH_ALEN);
			hdd_notice("mlist[%d] = " MAC_ADDRESS_STR, i,
			       MAC_ADDR_ARRAY(adapter->mc_addr_list.addr[i]));
			i++;
		}
	}
	if (hdd_ctx->config->active_mode_offload) {
		hdd_info("enable mc filtering");
		wlan_hdd_set_mc_addr_list(adapter, true);
	} else {
		hdd_info("skip mc filtering enable it during cfg80211 suspend");
	}
	EXIT();
	return;
}

/**
 * hdd_set_multicast_list() - SSR wrapper function for __hdd_set_multicast_list
 * @dev: pointer to net_device
 *
 * Return: none
 */
static void hdd_set_multicast_list(struct net_device *dev)
{
	cds_ssr_protect(__func__);
	__hdd_set_multicast_list(dev);
	cds_ssr_unprotect(__func__);
}
#endif

/**
 * hdd_select_queue() - used by Linux OS to decide which queue to use first
 * @dev:	Pointer to the WLAN device.
 * @skb:	Pointer to OS packet (sk_buff).
 *
 * This function is registered with the Linux OS for network
 * core to decide which queue to use first.
 *
 * Return: ac, Queue Index/access category corresponding to UP in IP header
 */
static uint16_t hdd_select_queue(struct net_device *dev, struct sk_buff *skb
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 13, 0))
			  , void *accel_priv
#endif
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 14, 0))
			  , select_queue_fallback_t fallback
#endif
)
{
	return hdd_wmm_select_queue(dev, skb);
}

static struct net_device_ops wlan_drv_ops = {
	.ndo_open = hdd_open,
	.ndo_stop = hdd_stop,
	.ndo_uninit = hdd_uninit,
	.ndo_start_xmit = hdd_hard_start_xmit,
	.ndo_tx_timeout = hdd_tx_timeout,
	.ndo_get_stats = hdd_get_stats,
	.ndo_do_ioctl = hdd_ioctl,
	.ndo_set_mac_address = hdd_set_mac_address,
	.ndo_select_queue = hdd_select_queue,
#ifdef WLAN_FEATURE_PACKET_FILTERING
	.ndo_set_rx_mode = hdd_set_multicast_list,
#endif
};

/* Monitor mode net_device_ops, doesnot Tx and most of operations. */
static struct net_device_ops wlan_mon_drv_ops = {
	.ndo_open = hdd_mon_open,
	.ndo_stop = hdd_stop,
	.ndo_get_stats = hdd_get_stats,
};

/**
 * hdd_set_station_ops() - update net_device ops for monitor mode
 * @pWlanDev: Handle to struct net_device to be updated.
 * Return: None
 */
void hdd_set_station_ops(struct net_device *pWlanDev)
{
	if (QDF_GLOBAL_MONITOR_MODE == cds_get_conparam())
		pWlanDev->netdev_ops = &wlan_mon_drv_ops;
	else
		pWlanDev->netdev_ops = &wlan_drv_ops;
}

#ifdef FEATURE_RUNTIME_PM
/**
 * hdd_runtime_suspend_context_init() - API to initialize HDD Runtime Contexts
 * @hdd_ctx: HDD context
 *
 * Return: None
 */
static void hdd_runtime_suspend_context_init(hdd_context_t *hdd_ctx)
{
	struct hdd_runtime_pm_context *ctx = &hdd_ctx->runtime_context;

	ctx->scan = qdf_runtime_lock_init("scan");
	ctx->roc = qdf_runtime_lock_init("roc");
	ctx->dfs = qdf_runtime_lock_init("dfs");
}

/**
 * hdd_runtime_suspend_context_deinit() - API to deinit HDD runtime context
 * @hdd_ctx: HDD Context
 *
 * Return: None
 */
static void hdd_runtime_suspend_context_deinit(hdd_context_t *hdd_ctx)
{
	struct hdd_runtime_pm_context *ctx = &hdd_ctx->runtime_context;

	qdf_runtime_lock_deinit(ctx->scan);
	ctx->scan = NULL;
	qdf_runtime_lock_deinit(ctx->roc);
	ctx->roc = NULL;
	qdf_runtime_lock_deinit(ctx->dfs);
	ctx->dfs = NULL;
}

static void hdd_adapter_runtime_suspend_init(hdd_adapter_t *adapter)
{
	struct hdd_connect_pm_context *ctx = &adapter->connect_rpm_ctx;

	ctx->connect = qdf_runtime_lock_init("connect");
}

static void hdd_adapter_runtime_suspend_denit(hdd_adapter_t *adapter)
{
	struct hdd_connect_pm_context *ctx = &adapter->connect_rpm_ctx;

	qdf_runtime_lock_deinit(ctx->connect);
	ctx->connect = NULL;
}
#else /* FEATURE_RUNTIME_PM */
static void hdd_runtime_suspend_context_init(hdd_context_t *hdd_ctx) {}
static void hdd_runtime_suspend_context_deinit(hdd_context_t *hdd_ctx) {}
static inline void hdd_adapter_runtime_suspend_init(hdd_adapter_t *adapter) {}
static inline void hdd_adapter_runtime_suspend_denit(hdd_adapter_t *adapter) {}
#endif /* FEATURE_RUNTIME_PM */
/**
 * hdd_alloc_station_adapter() - allocate the station hdd adapter
 * @hdd_ctx: global hdd context
 * @macAddr: mac address to assign to the interface
 * @name: User-visible name of the interface
 *
 * hdd adapter pointer would point to the netdev->priv space, this function
 * would retrive the pointer, and setup the hdd adapter configuration.
 *
 * Return: the pointer to hdd adapter, otherwise NULL
 */
static hdd_adapter_t *hdd_alloc_station_adapter(hdd_context_t *hdd_ctx,
						tSirMacAddr macAddr,
						unsigned char name_assign_type,
						const char *name)
{
	struct net_device *pWlanDev = NULL;
	hdd_adapter_t *adapter = NULL;
	/*
	 * cfg80211 initialization and registration....
	 */
	pWlanDev = alloc_netdev_mq(sizeof(hdd_adapter_t), name,
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 17, 0)) || defined(WITH_BACKPORTS)
				   name_assign_type,
#endif
				(QDF_GLOBAL_MONITOR_MODE == cds_get_conparam() ?
				hdd_mon_mode_ether_setup : ether_setup),
				NUM_TX_QUEUES);

	if (pWlanDev != NULL) {

		/* Save the pointer to the net_device in the HDD adapter */
		adapter = (hdd_adapter_t *) netdev_priv(pWlanDev);

		qdf_mem_zero(adapter, sizeof(hdd_adapter_t));

		adapter->dev = pWlanDev;
		adapter->pHddCtx = hdd_ctx;
		adapter->magic = WLAN_HDD_ADAPTER_MAGIC;
		adapter->sessionId = HDD_SESSION_ID_INVALID;

		init_completion(&adapter->session_open_comp_var);
		init_completion(&adapter->session_close_comp_var);
		init_completion(&adapter->disconnect_comp_var);
		init_completion(&adapter->linkup_event_var);
		init_completion(&adapter->cancel_rem_on_chan_var);
		init_completion(&adapter->rem_on_chan_ready_event);
		init_completion(&adapter->sta_authorized_event);
		init_completion(&adapter->offchannel_tx_event);
		init_completion(&adapter->tx_action_cnf_event);
#ifdef FEATURE_WLAN_TDLS
		init_completion(&adapter->tdls_add_station_comp);
		init_completion(&adapter->tdls_del_station_comp);
		init_completion(&adapter->tdls_mgmt_comp);
		init_completion(&adapter->tdls_link_establish_req_comp);
#endif
		init_completion(&adapter->ibss_peer_info_comp);
		init_completion(&adapter->change_country_code);


		init_completion(&adapter->scan_info.abortscan_event_var);

		adapter->offloads_configured = false;
		adapter->isLinkUpSvcNeeded = false;
		adapter->higherDtimTransition = true;
		/* Init the net_device structure */
		strlcpy(pWlanDev->name, name, IFNAMSIZ);

		qdf_mem_copy(pWlanDev->dev_addr, (void *)macAddr,
			     sizeof(tSirMacAddr));
		qdf_mem_copy(adapter->macAddressCurrent.bytes, macAddr,
			     sizeof(tSirMacAddr));
		pWlanDev->watchdog_timeo = HDD_TX_TIMEOUT;

		if (hdd_ctx->config->enable_ip_tcp_udp_checksum_offload)
			pWlanDev->features |=
				NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM;
		pWlanDev->features |= NETIF_F_RXCSUM;

		hdd_set_tso_flags(hdd_ctx, pWlanDev);

		hdd_set_station_ops(adapter->dev);

		pWlanDev->destructor = free_netdev;
		pWlanDev->ieee80211_ptr = &adapter->wdev;
		pWlanDev->tx_queue_len = HDD_NETDEV_TX_QUEUE_LEN;
		adapter->wdev.wiphy = hdd_ctx->wiphy;
		adapter->wdev.netdev = pWlanDev;
		/* set pWlanDev's parent to underlying device */
		SET_NETDEV_DEV(pWlanDev, hdd_ctx->parent_dev);
		hdd_wmm_init(adapter);
		hdd_adapter_runtime_suspend_init(adapter);
		spin_lock_init(&adapter->pause_map_lock);
		adapter->start_time = adapter->last_time = qdf_system_ticks();
	}

	return adapter;
}

static QDF_STATUS hdd_register_interface(hdd_adapter_t *adapter,
					 bool rtnl_held)
{
	struct net_device *pWlanDev = adapter->dev;

	if (rtnl_held) {
		if (strnchr(pWlanDev->name, strlen(pWlanDev->name), '%')) {
			if (dev_alloc_name(pWlanDev, pWlanDev->name) < 0) {
				hdd_err("Failed:dev_alloc_name");
				return QDF_STATUS_E_FAILURE;
			}
		}
		if (register_netdevice(pWlanDev)) {
			hdd_err("Failed:register_netdev");
			return QDF_STATUS_E_FAILURE;
		}
	} else {
		if (register_netdev(pWlanDev)) {
			hdd_err("Failed:register_netdev");
			return QDF_STATUS_E_FAILURE;
		}
	}
	set_bit(NET_DEVICE_REGISTERED, &adapter->event_flags);

	return QDF_STATUS_SUCCESS;
}

QDF_STATUS hdd_sme_close_session_callback(void *pContext)
{
	hdd_adapter_t *adapter = pContext;

	if (NULL == adapter) {
		hdd_alert("NULL adapter");
		return QDF_STATUS_E_INVAL;
	}

	if (WLAN_HDD_ADAPTER_MAGIC != adapter->magic) {
		hdd_alert("Invalid magic");
		return QDF_STATUS_NOT_INITIALIZED;
	}

	/*
	 * For NAN Data interface, the close session results in the final
	 * indication to the userspace
	 */
	if (adapter->device_mode == QDF_NDI_MODE)
		hdd_ndp_session_end_handler(adapter);

	clear_bit(SME_SESSION_OPENED, &adapter->event_flags);

	/*
	 * We can be blocked while waiting for scheduled work to be
	 * flushed, and the adapter structure can potentially be freed, in
	 * which case the magic will have been reset.  So make sure the
	 * magic is still good, and hence the adapter structure is still
	 * valid, before signaling completion
	 */
	if (WLAN_HDD_ADAPTER_MAGIC == adapter->magic)
		complete(&adapter->session_close_comp_var);

	return QDF_STATUS_SUCCESS;
}

/**
 * hdd_check_and_init_tdls() - check and init TDLS operation for desired mode
 * @adapter: pointer to device adapter
 * @type: type of interface
 *
 * This routine will check the mode of adapter and if it is required then it
 * will initialize the TDLS operations
 *
 * Return: QDF_STATUS
 */
#ifdef FEATURE_WLAN_TDLS
static QDF_STATUS hdd_check_and_init_tdls(hdd_adapter_t *adapter, uint32_t type)
{
	if (QDF_IBSS_MODE != type) {
		if (0 != wlan_hdd_tdls_init(adapter)) {
			hdd_err("wlan_hdd_tdls_init failed");
			return QDF_STATUS_E_FAILURE;
		}
		set_bit(TDLS_INIT_DONE, &adapter->event_flags);
	}
	return QDF_STATUS_SUCCESS;
}
#else
static QDF_STATUS hdd_check_and_init_tdls(hdd_adapter_t *adapter, uint32_t type)
{
	return QDF_STATUS_SUCCESS;
}
#endif

QDF_STATUS hdd_init_station_mode(hdd_adapter_t *adapter)
{
	struct net_device *pWlanDev = adapter->dev;
	hdd_station_ctx_t *pHddStaCtx = &adapter->sessionCtx.station;
	hdd_context_t *hdd_ctx = WLAN_HDD_GET_CTX(adapter);
	QDF_STATUS qdf_ret_status = QDF_STATUS_SUCCESS;
	QDF_STATUS status = QDF_STATUS_E_FAILURE;
	uint32_t type, subType;
	unsigned long rc;
	int ret_val;

	INIT_COMPLETION(adapter->session_open_comp_var);
	sme_set_curr_device_mode(hdd_ctx->hHal, adapter->device_mode);
	sme_set_pdev_ht_vht_ies(hdd_ctx->hHal, hdd_ctx->config->enable2x2);
	status = cds_get_vdev_types(adapter->device_mode, &type, &subType);
	if (QDF_STATUS_SUCCESS != status) {
		hdd_err("failed to get vdev type");
		goto error_sme_open;
	}
	/* Open a SME session for future operation */
	qdf_ret_status =
		sme_open_session(hdd_ctx->hHal, hdd_sme_roam_callback, adapter,
				 (uint8_t *) &adapter->macAddressCurrent,
				 &adapter->sessionId, type, subType);
	if (!QDF_IS_STATUS_SUCCESS(qdf_ret_status)) {
		hdd_alert("sme_open_session() failed, status code %08d [x%08x]",
		       qdf_ret_status, qdf_ret_status);
		status = QDF_STATUS_E_FAILURE;
		goto error_sme_open;
	}
	/* Block on a completion variable. Can't wait forever though. */
	rc = wait_for_completion_timeout(
		&adapter->session_open_comp_var,
		msecs_to_jiffies(WLAN_WAIT_TIME_SESSIONOPENCLOSE));
	if (!rc) {
		hdd_alert("Session is not opened within timeout period code %ld",
			rc);
		adapter->sessionId = HDD_SESSION_ID_INVALID;
		return QDF_STATUS_E_FAILURE;
	}

	status = hdd_create_and_store_vdev(hdd_ctx->hdd_pdev, adapter);
	if (QDF_IS_STATUS_ERROR(status))
		goto error_vdev_create;

	sme_set_vdev_ies_per_band(hdd_ctx->hHal, adapter->sessionId);
	/* Register wireless extensions */
	qdf_ret_status = hdd_register_wext(pWlanDev);
	if (QDF_STATUS_SUCCESS != qdf_ret_status) {
		hdd_alert("hdd_register_wext() failed, status code %08d [x%08x]",
		       qdf_ret_status, qdf_ret_status);
		status = QDF_STATUS_E_FAILURE;
		goto error_register_wext;
	}
	/* Set the Connection State to Not Connected */
	hdd_notice("Set HDD connState to eConnectionState_NotConnected");
	pHddStaCtx->conn_info.connState = eConnectionState_NotConnected;

	/* set fast roaming capability in sme session */
	status = sme_config_fast_roaming(hdd_ctx->hHal, adapter->sessionId,
					 adapter->fast_roaming_allowed);
	/* Set the default operation channel */
	pHddStaCtx->conn_info.operationChannel =
		hdd_ctx->config->OperatingChannel;

	/* Make the default Auth Type as OPEN */
	pHddStaCtx->conn_info.authType = eCSR_AUTH_TYPE_OPEN_SYSTEM;

	status = hdd_init_tx_rx(adapter);
	if (QDF_STATUS_SUCCESS != status) {
		hdd_alert("hdd_init_tx_rx() failed, status code %08d [x%08x]",
		       status, status);
		goto error_init_txrx;
	}

	set_bit(INIT_TX_RX_SUCCESS, &adapter->event_flags);

	status = hdd_wmm_adapter_init(adapter);
	if (QDF_STATUS_SUCCESS != status) {
		hdd_alert("hdd_wmm_adapter_init() failed, status code %08d [x%08x]",
		       status, status);
		goto error_wmm_init;
	}

	set_bit(WMM_INIT_DONE, &adapter->event_flags);

	ret_val = wma_cli_set_command(adapter->sessionId,
				      WMI_PDEV_PARAM_BURST_ENABLE,
				      hdd_ctx->config->enableSifsBurst,
				      PDEV_CMD);

	if (0 != ret_val) {
		hdd_err("WMI_PDEV_PARAM_BURST_ENABLE set failed %d",
		       ret_val);
	}
	status = hdd_check_and_init_tdls(adapter, type);
	if (status != QDF_STATUS_SUCCESS)
		goto error_tdls_init;

	status = hdd_lro_enable(hdd_ctx, adapter);
	if (status != QDF_STATUS_SUCCESS)
		goto error_lro_enable;

	return QDF_STATUS_SUCCESS;

error_lro_enable:
	wlan_hdd_tdls_exit(adapter);
error_tdls_init:
	clear_bit(WMM_INIT_DONE, &adapter->event_flags);
	hdd_wmm_adapter_close(adapter);
error_wmm_init:
	clear_bit(INIT_TX_RX_SUCCESS, &adapter->event_flags);
	hdd_deinit_tx_rx(adapter);
error_init_txrx:
	hdd_unregister_wext(pWlanDev);
error_register_wext:
	status = hdd_release_and_destroy_vdev(adapter);
	if (QDF_IS_STATUS_ERROR(status))
		hdd_err("vdev delete failed");
error_vdev_create:
	if (test_bit(SME_SESSION_OPENED, &adapter->event_flags)) {
		INIT_COMPLETION(adapter->session_close_comp_var);
		if (QDF_STATUS_SUCCESS == sme_close_session(hdd_ctx->hHal,
							    adapter->sessionId,
							    hdd_sme_close_session_callback,
							    adapter)) {
			unsigned long rc;

			/*
			 * Block on a completion variable.
			 * Can't wait forever though.
			 */
			rc = wait_for_completion_timeout(
				&adapter->session_close_comp_var,
				msecs_to_jiffies
					(WLAN_WAIT_TIME_SESSIONOPENCLOSE));
			if (rc <= 0)
				hdd_err("Session is not opened within timeout period code %ld",
				       rc);
		}
	}
error_sme_open:
	return status;
}

void hdd_cleanup_actionframe(hdd_context_t *hdd_ctx, hdd_adapter_t *adapter)
{
	hdd_cfg80211_state_t *cfgState;

	cfgState = WLAN_HDD_GET_CFG_STATE_PTR(adapter);

	if (NULL != cfgState->buf) {
		unsigned long rc;
		rc = wait_for_completion_timeout(
			&adapter->tx_action_cnf_event,
			msecs_to_jiffies(ACTION_FRAME_TX_TIMEOUT));
		if (!rc) {
			hdd_err("HDD Wait for Action Confirmation Failed!!");
			/*
			 * Inform tx status as FAILURE to upper layer and free
			 * cfgState->buf
			 */
			 hdd_send_action_cnf(adapter, false);
		}
	}
	return;
}

/**
 * hdd_station_adapter_deinit() - De-initialize the station adapter
 * @hdd_ctx: global hdd context
 * @adapter: HDD adapter
 * @rtnl_held: Used to indicate whether or not the caller is holding
 *             the kernel rtnl_mutex
 *
 * This function De-initializes the STA/P2P/OCB adapter.
 *
 * Return: None.
 */
static void hdd_station_adapter_deinit(hdd_context_t *hdd_ctx,
				       hdd_adapter_t *adapter,
				       bool rtnl_held)
{
	ENTER_DEV(adapter->dev);

	if (adapter->dev) {
		if (rtnl_held)
			adapter->dev->wireless_handlers = NULL;
		else {
			rtnl_lock();
			adapter->dev->wireless_handlers = NULL;
			rtnl_unlock();
		}
	}

	if (test_bit(INIT_TX_RX_SUCCESS, &adapter->event_flags)) {
		hdd_deinit_tx_rx(adapter);
		clear_bit(INIT_TX_RX_SUCCESS, &adapter->event_flags);
	}

	if (test_bit(WMM_INIT_DONE, &adapter->event_flags)) {
		hdd_wmm_adapter_close(adapter);
		clear_bit(WMM_INIT_DONE, &adapter->event_flags);
	}

	hdd_cleanup_actionframe(hdd_ctx, adapter);
	wlan_hdd_tdls_exit(adapter);

	EXIT();
}

/**
 * hdd_ap_adapter_deinit() - De-initialize the ap adapter
 * @hdd_ctx: global hdd context
 * @adapter: HDD adapter
 * @rtnl_held: the rtnl lock hold flag
 * This function De-initializes the AP/P2PGo adapter.
 *
 * Return: None.
 */
static void hdd_ap_adapter_deinit(hdd_context_t *hdd_ctx,
				  hdd_adapter_t *adapter,
				  bool rtnl_held)
{
	ENTER_DEV(adapter->dev);

	if (test_bit(WMM_INIT_DONE, &adapter->event_flags)) {
		hdd_wmm_adapter_close(adapter);
		clear_bit(WMM_INIT_DONE, &adapter->event_flags);
	}
	wlan_hdd_undo_acs(adapter);

	hdd_cleanup_actionframe(hdd_ctx, adapter);

	hdd_unregister_hostapd(adapter, rtnl_held);

	EXIT();
}

void hdd_deinit_adapter(hdd_context_t *hdd_ctx, hdd_adapter_t *adapter,
			bool rtnl_held)
{
	ENTER();

	switch (adapter->device_mode) {
	case QDF_STA_MODE:
	case QDF_P2P_CLIENT_MODE:
	case QDF_P2P_DEVICE_MODE:
	{
		hdd_station_adapter_deinit(hdd_ctx, adapter, rtnl_held);
		break;
	}

	case QDF_SAP_MODE:
	case QDF_P2P_GO_MODE:
	{

		hdd_ap_adapter_deinit(hdd_ctx, adapter, rtnl_held);
		break;
	}

	default:
		break;
	}

	EXIT();
}

static void hdd_cleanup_adapter(hdd_context_t *hdd_ctx, hdd_adapter_t *adapter,
				bool rtnl_held)
{
	struct net_device *pWlanDev = NULL;
	QDF_STATUS qdf_status;

	if (adapter)
		pWlanDev = adapter->dev;
	else {
		hdd_err("adapter is Null");
		return;
	}

	qdf_status = hdd_release_and_destroy_vdev(adapter);
	if (QDF_IS_STATUS_ERROR(qdf_status))
		hdd_err("vdev delete failed");

	hdd_debugfs_exit(adapter);

	if (adapter->scan_info.default_scan_ies) {
		qdf_mem_free(adapter->scan_info.default_scan_ies);
		adapter->scan_info.default_scan_ies = NULL;
	}

	hdd_adapter_runtime_suspend_denit(adapter);

	/*
	 * The adapter is marked as closed. When hdd_wlan_exit() call returns,
	 * the driver is almost closed and cannot handle either control
	 * messages or data. However, unregister_netdevice() call above will
	 * eventually invoke hdd_stop (ndo_close) driver callback, which attempts
	 * to close the active connections (basically excites control path) which
	 * is not right. Setting this flag helps hdd_stop() to recognize that
	 * the interface is closed and restricts any operations on that
	 */
	clear_bit(DEVICE_IFACE_OPENED, &adapter->event_flags);

	if (test_bit(NET_DEVICE_REGISTERED, &adapter->event_flags)) {
		if (rtnl_held) {
			unregister_netdevice(pWlanDev);
		} else {
			unregister_netdev(pWlanDev);
		}
		/*
		 * Note that the adapter is no longer valid at this point
		 * since the memory has been reclaimed
		 */
	}
}

static QDF_STATUS hdd_check_for_existing_macaddr(hdd_context_t *hdd_ctx,
						 tSirMacAddr macAddr)
{
	hdd_adapter_list_node_t *adapterNode = NULL, *pNext = NULL;
	hdd_adapter_t *adapter;
	QDF_STATUS status;
	status = hdd_get_front_adapter(hdd_ctx, &adapterNode);
	while (NULL != adapterNode && QDF_STATUS_SUCCESS == status) {
		adapter = adapterNode->pAdapter;
		if (adapter
		    && !qdf_mem_cmp(adapter->macAddressCurrent.bytes,
				       macAddr, sizeof(tSirMacAddr))) {
			return QDF_STATUS_E_FAILURE;
		}
		status = hdd_get_next_adapter(hdd_ctx, adapterNode, &pNext);
		adapterNode = pNext;
	}
	return QDF_STATUS_SUCCESS;
}

#ifdef CONFIG_FW_LOGS_BASED_ON_INI
/**
 * hdd_set_fw_log_params() - Set log parameters to FW
 * @hdd_ctx: HDD Context
 * @adapter: HDD Adapter
 *
 * This function set the FW Debug log level based on the INI.
 *
 * Return: None
 */
static void hdd_set_fw_log_params(hdd_context_t *hdd_ctx,
				  hdd_adapter_t *adapter)
{
	uint8_t count = 0, numentries = 0,
			moduleloglevel[FW_MODULE_LOG_LEVEL_STRING_LENGTH];
	uint32_t value = 0;
	int ret;

	if (QDF_GLOBAL_FTM_MODE == cds_get_conparam() ||
	    (!hdd_ctx->config->enable_fw_log)) {
		hdd_info("enable_fw_log not enabled in INI or in FTM mode return");
		return;
	}

	/* Enable FW logs based on INI configuration */
	hdd_ctx->fw_log_settings.dl_type =
			hdd_ctx->config->enableFwLogType;
	ret = wma_cli_set_command(adapter->sessionId,
			WMI_DBGLOG_TYPE,
			hdd_ctx->config->enableFwLogType,
			DBG_CMD);
	if (ret != 0)
		hdd_err("Failed to enable FW log type ret %d",
			ret);

	hdd_ctx->fw_log_settings.dl_loglevel =
			hdd_ctx->config->enableFwLogLevel;
	ret = wma_cli_set_command(adapter->sessionId,
			WMI_DBGLOG_LOG_LEVEL,
			hdd_ctx->config->enableFwLogLevel,
			DBG_CMD);
	if (ret != 0)
		hdd_err("Failed to enable FW log level ret %d",
			ret);

	hdd_string_to_u8_array(
		hdd_ctx->config->enableFwModuleLogLevel,
		moduleloglevel,
		&numentries,
		FW_MODULE_LOG_LEVEL_STRING_LENGTH);

	while (count < numentries) {
		/*
		 * FW module log level input string looks like
		 * below:
		 * gFwDebugModuleLoglevel=<FW Module ID>,
		 * <Log Level>,...
		 * For example:
		 * gFwDebugModuleLoglevel=
		 * 1,0,2,1,3,2,4,3,5,4,6,5,7,6
		 * Above input string means :
		 * For FW module ID 1 enable log level 0
		 * For FW module ID 2 enable log level 1
		 * For FW module ID 3 enable log level 2
		 * For FW module ID 4 enable log level 3
		 * For FW module ID 5 enable log level 4
		 * For FW module ID 6 enable log level 5
		 * For FW module ID 7 enable log level 6
		 */

		/* FW expects WMI command value =
		 * Module ID * 10 + Module Log level
		 */
		value = ((moduleloglevel[count] * 10) +
			 moduleloglevel[count + 1]);
		ret = wma_cli_set_command(adapter->sessionId,
				WMI_DBGLOG_MOD_LOG_LEVEL,
				value, DBG_CMD);
		if (ret != 0)
			hdd_err("Failed to enable FW module log level %d ret %d",
				value, ret);

		count += 2;
	}

}
#else
static void hdd_set_fw_log_params(hdd_context_t *hdd_ctx,
				  hdd_adapter_t *adapter)
{
}

#endif

/**
 * hdd_set_fw_params() - Set parameters to firmware
 * @adapter: HDD adapter
 *
 * This function Sets various parameters to fw once the
 * adapter is started.
 *
 * Return: 0 on success or errno on failure
 */
int hdd_set_fw_params(hdd_adapter_t *adapter)
{
	int ret;
	hdd_context_t *hdd_ctx;

	ENTER_DEV(adapter->dev);

	hdd_ctx = cds_get_context(QDF_MODULE_ID_HDD);
	if (!hdd_ctx)
		return -EINVAL;

	if ((cds_get_conparam() != QDF_GLOBAL_FTM_MODE) &&
	    (!hdd_ctx->config->enable2x2)) {
#define HDD_DTIM_1CHAIN_RX_ID 0x5
#define HDD_SMPS_PARAM_VALUE_S 29
		/*
		 * Disable DTIM 1 chain Rx when in 1x1,
		 * we are passing two value
		 * as param_id << 29 | param_value.
		 * Below param_value = 0(disable)
		 */
		ret = wma_cli_set_command(adapter->sessionId,
					  WMI_STA_SMPS_PARAM_CMDID,
					  HDD_DTIM_1CHAIN_RX_ID <<
					  HDD_SMPS_PARAM_VALUE_S,
					  VDEV_CMD);
		if (ret) {
			hdd_err("DTIM 1 chain set failed %d", ret);
			goto error;
		}

		ret = wma_cli_set_command(adapter->sessionId,
					  WMI_PDEV_PARAM_TX_CHAIN_MASK,
					  hdd_ctx->config->txchainmask1x1,
					  PDEV_CMD);
		if (ret) {
			hdd_err("WMI_PDEV_PARAM_TX_CHAIN_MASK set failed %d",
				ret);
			goto error;
		}

		ret = wma_cli_set_command(adapter->sessionId,
					  WMI_PDEV_PARAM_RX_CHAIN_MASK,
					  hdd_ctx->config->rxchainmask1x1,
					  PDEV_CMD);
		if (ret) {
			hdd_err("WMI_PDEV_PARAM_RX_CHAIN_MASK set failed %d",
				ret);
			goto error;
		}
#undef HDD_DTIM_1CHAIN_RX_ID
#undef HDD_SMPS_PARAM_VALUE_S
	} else {
		hdd_info("FTM Mode or 2x2 mode - Do not set 1x1 params");
	}

	if (QDF_GLOBAL_FTM_MODE != cds_get_conparam()) {
		ret = wma_cli_set_command(adapter->sessionId,
					  WMI_PDEV_PARAM_HYST_EN,
					  hdd_ctx->config->enableMemDeepSleep,
					  PDEV_CMD);

		if (ret) {
			hdd_err("WMI_PDEV_PARAM_HYST_EN set failed %d",
				ret);
			goto error;
		}

		ret = wma_cli_set_command(adapter->sessionId,
					  WMI_VDEV_PARAM_ENABLE_RTSCTS,
					  hdd_ctx->config->rts_profile,
					  VDEV_CMD);
		if (ret) {
			hdd_err("FAILED TO SET RTSCTS Profile ret:%d", ret);
			goto error;
		}
	}

	hdd_set_fw_log_params(hdd_ctx, adapter);

	EXIT();
	return 0;

error:
	return -EINVAL;
}

/**
 * hdd_open_adapter() - open and setup the hdd adatper
 * @hdd_ctx: global hdd context
 * @session_type: type of the interface to be created
 * @iface_name: User-visible name of the interface
 * @macAddr: MAC address to assign to the interface
 * @name_assign_type: the name of assign type of the netdev
 * @rtnl_held: the rtnl lock hold flag
 *
 * This function open and setup the hdd adpater according to the device
 * type request, assign the name, the mac address assigned, and then prepared
 * the hdd related parameters, queue, lock and ready to start.
 *
 * Return: the pointer of hdd adapter, otherwise NULL.
 */
hdd_adapter_t *hdd_open_adapter(hdd_context_t *hdd_ctx, uint8_t session_type,
				const char *iface_name, tSirMacAddr macAddr,
				unsigned char name_assign_type,
				bool rtnl_held)
{
	hdd_adapter_t *adapter = NULL;
	hdd_adapter_list_node_t *pHddAdapterNode = NULL;
	QDF_STATUS status = QDF_STATUS_E_FAILURE;
	hdd_cfg80211_state_t *cfgState;

	hdd_info("iface(%s) type(%d)", iface_name, session_type);

	if (hdd_ctx->current_intf_count >= hdd_ctx->max_intf_count) {
		/*
		 * Max limit reached on the number of vdevs configured by the
		 * host. Return error
		 */
		hdd_err("Unable to add virtual intf: currentVdevCnt=%d,hostConfiguredVdevCnt=%d",
			hdd_ctx->current_intf_count, hdd_ctx->max_intf_count);
		return NULL;
	}

	if (macAddr == NULL) {
		/* Not received valid macAddr */
		hdd_err("Unable to add virtual intf: Not able to get valid mac address");
		return NULL;
	}
	status = hdd_check_for_existing_macaddr(hdd_ctx, macAddr);
	if (QDF_STATUS_E_FAILURE == status) {
		hdd_err("Duplicate MAC addr: " MAC_ADDRESS_STR
				" already exists",
				MAC_ADDR_ARRAY(macAddr));
		return NULL;
	}

	switch (session_type) {
	case QDF_STA_MODE:
		/* Reset locally administered bit if the device mode is STA */
		WLAN_HDD_RESET_LOCALLY_ADMINISTERED_BIT(macAddr);
	/* fall through */
	case QDF_P2P_CLIENT_MODE:
	case QDF_P2P_DEVICE_MODE:
	case QDF_OCB_MODE:
	case QDF_NDI_MODE:
	case QDF_MONITOR_MODE:
		adapter = hdd_alloc_station_adapter(hdd_ctx, macAddr,
						    name_assign_type,
						    iface_name);

		if (NULL == adapter) {
			hdd_err("failed to allocate adapter for session %d",
					session_type);
			return NULL;
		}

		if (QDF_P2P_CLIENT_MODE == session_type)
			adapter->wdev.iftype = NL80211_IFTYPE_P2P_CLIENT;
		else if (QDF_P2P_DEVICE_MODE == session_type)
			adapter->wdev.iftype = NL80211_IFTYPE_P2P_DEVICE;
		else if (QDF_MONITOR_MODE == session_type)
			adapter->wdev.iftype = NL80211_IFTYPE_MONITOR;
		else
			adapter->wdev.iftype = NL80211_IFTYPE_STATION;

		adapter->device_mode = session_type;

		if (QDF_NDI_MODE == session_type) {
			status = hdd_init_nan_data_mode(adapter);
			if (QDF_STATUS_SUCCESS != status)
				goto err_free_netdev;
		}

		/*
		 * Workqueue which gets scheduled in IPv4 notification
		 * callback
		 */
		INIT_WORK(&adapter->ipv4NotifierWorkQueue,
			  hdd_ipv4_notifier_work_queue);

#ifdef WLAN_NS_OFFLOAD
		/*
		 * Workqueue which gets scheduled in IPv6
		 * notification callback.
		 */
		INIT_WORK(&adapter->ipv6NotifierWorkQueue,
			  hdd_ipv6_notifier_work_queue);
#endif
		status = hdd_register_interface(adapter, rtnl_held);
		if (QDF_STATUS_SUCCESS != status) {
			hdd_deinit_adapter(hdd_ctx, adapter, rtnl_held);
			goto err_free_netdev;
		}

		/* Stop the Interface TX queue. */
		hdd_info("Disabling queues");
		wlan_hdd_netif_queue_control(adapter,
					     WLAN_NETIF_TX_DISABLE_N_CARRIER,
					     WLAN_CONTROL_PATH);
		break;


	case QDF_P2P_GO_MODE:
	case QDF_SAP_MODE:
		adapter = hdd_wlan_create_ap_dev(hdd_ctx, macAddr,
						 name_assign_type,
						 (uint8_t *) iface_name);
		if (NULL == adapter) {
			hdd_alert("failed to allocate adapter for session %d",
					  session_type);
			return NULL;
		}

		adapter->wdev.iftype =
			(session_type ==
			 QDF_SAP_MODE) ? NL80211_IFTYPE_AP :
			NL80211_IFTYPE_P2P_GO;
		adapter->device_mode = session_type;

		status = hdd_register_hostapd(adapter, rtnl_held);
		if (QDF_STATUS_SUCCESS != status) {
			hdd_deinit_adapter(hdd_ctx, adapter, rtnl_held);
			goto err_free_netdev;
		}
		hdd_info("Disabling queues");
		wlan_hdd_netif_queue_control(adapter,
					     WLAN_NETIF_TX_DISABLE_N_CARRIER,
					     WLAN_CONTROL_PATH);
		break;
	case QDF_FTM_MODE:
		adapter = hdd_alloc_station_adapter(hdd_ctx, macAddr,
						    name_assign_type,
						    "wlan0");
		if (NULL == adapter) {
			hdd_err("Failed to allocate adapter for FTM mode");
			return NULL;
		}
		adapter->wdev.iftype = NL80211_IFTYPE_STATION;
		adapter->device_mode = session_type;
		status = hdd_register_interface(adapter, rtnl_held);
		if (QDF_STATUS_SUCCESS != status) {
			hdd_deinit_adapter(hdd_ctx, adapter, rtnl_held);
			goto err_free_netdev;
		}
		/* Stop the Interface TX queue. */
		hdd_info("Disabling queues");
		wlan_hdd_netif_queue_control(adapter,
					     WLAN_NETIF_TX_DISABLE_N_CARRIER,
					     WLAN_CONTROL_PATH);
		break;
	default:
		hdd_alert("Invalid session type %d", session_type);
		QDF_ASSERT(0);
		return NULL;
	}

	cfgState = WLAN_HDD_GET_CFG_STATE_PTR(adapter);
	mutex_init(&cfgState->remain_on_chan_ctx_lock);

	if (QDF_STATUS_SUCCESS == status) {
		/* Add it to the hdd's session list. */
		pHddAdapterNode =
			qdf_mem_malloc(sizeof(hdd_adapter_list_node_t));
		if (NULL == pHddAdapterNode) {
			status = QDF_STATUS_E_NOMEM;
		} else {
			pHddAdapterNode->pAdapter = adapter;
			status = hdd_add_adapter_back(hdd_ctx, pHddAdapterNode);
		}
	}

	if (QDF_STATUS_SUCCESS != status) {
		if (NULL != adapter) {
			hdd_cleanup_adapter(hdd_ctx, adapter, rtnl_held);
			adapter = NULL;
		}
		if (NULL != pHddAdapterNode) {
			qdf_mem_free(pHddAdapterNode);
		}
		return NULL;
	}

	if (QDF_STATUS_SUCCESS == status) {
		cds_set_concurrency_mode(session_type);

		/* Initialize the WoWL service */
		if (!hdd_init_wowl(adapter)) {
			hdd_alert("hdd_init_wowl failed");
			goto err_close_adapter;
		}

		/* Adapter successfully added. Increment the vdev count */
		hdd_ctx->current_intf_count++;

		hdd_debug("current_intf_count=%d",
		       hdd_ctx->current_intf_count);

		cds_check_and_restart_sap_with_non_dfs_acs();
	}

	if (QDF_STATUS_SUCCESS != hdd_debugfs_init(adapter))
		hdd_err("Interface %s wow debug_fs init failed", iface_name);

	return adapter;

err_close_adapter:
	hdd_close_adapter(hdd_ctx, adapter, rtnl_held);
err_free_netdev:
	wlan_hdd_release_intf_addr(hdd_ctx, adapter->macAddressCurrent.bytes);
	free_netdev(adapter->dev);

	return NULL;
}

QDF_STATUS hdd_close_adapter(hdd_context_t *hdd_ctx, hdd_adapter_t *adapter,
			     bool rtnl_held)
{
	hdd_adapter_list_node_t *adapterNode, *pCurrent, *pNext;
	QDF_STATUS status;

	status = hdd_get_front_adapter(hdd_ctx, &pCurrent);
	if (QDF_STATUS_SUCCESS != status) {
		hdd_warn("adapter list empty %d",
		       status);
		return status;
	}

	while (pCurrent->pAdapter != adapter) {
		status = hdd_get_next_adapter(hdd_ctx, pCurrent, &pNext);
		if (QDF_STATUS_SUCCESS != status)
			break;

		pCurrent = pNext;
	}
	adapterNode = pCurrent;
	if (QDF_STATUS_SUCCESS == status) {
		hdd_info("wait for bus bw work to flush");
		cancel_work_sync(&hdd_ctx->bus_bw_work);
		cds_clear_concurrency_mode(adapter->device_mode);
		hdd_cleanup_adapter(hdd_ctx, adapterNode->pAdapter, rtnl_held);

		hdd_remove_adapter(hdd_ctx, adapterNode);
		qdf_mem_free(adapterNode);
		adapterNode = NULL;

		/* Adapter removed. Decrement vdev count */
		if (hdd_ctx->current_intf_count != 0)
			hdd_ctx->current_intf_count--;

		/* Fw will take care incase of concurrency */
		return QDF_STATUS_SUCCESS;
	}

	return QDF_STATUS_E_FAILURE;
}

/**
 * hdd_close_all_adapters - Close all open adapters
 * @hdd_ctx:	Hdd context
 * rtnl_held:	True if RTNL lock held
 *
 * Close all open adapters.
 *
 * Return: QDF status code
 */
QDF_STATUS hdd_close_all_adapters(hdd_context_t *hdd_ctx, bool rtnl_held)
{
	hdd_adapter_list_node_t *pHddAdapterNode;
	QDF_STATUS status;

	ENTER();

	do {
		status = hdd_remove_front_adapter(hdd_ctx, &pHddAdapterNode);
		if (pHddAdapterNode && QDF_STATUS_SUCCESS == status) {
			wlan_hdd_release_intf_addr(hdd_ctx,
			pHddAdapterNode->pAdapter->macAddressCurrent.bytes);
			hdd_cleanup_adapter(hdd_ctx, pHddAdapterNode->pAdapter,
					    rtnl_held);
			qdf_mem_free(pHddAdapterNode);
			/* Adapter removed. Decrement vdev count */
			if (hdd_ctx->current_intf_count != 0)
				hdd_ctx->current_intf_count--;
		}
	} while (NULL != pHddAdapterNode && QDF_STATUS_E_EMPTY != status);

	EXIT();

	return QDF_STATUS_SUCCESS;
}

void wlan_hdd_reset_prob_rspies(hdd_adapter_t *pHostapdAdapter)
{
	struct qdf_mac_addr *bssid = NULL;
	tSirUpdateIE updateIE;
	switch (pHostapdAdapter->device_mode) {
	case QDF_STA_MODE:
	case QDF_P2P_CLIENT_MODE:
	{
		hdd_station_ctx_t *pHddStaCtx =
			WLAN_HDD_GET_STATION_CTX_PTR(pHostapdAdapter);
		bssid = &pHddStaCtx->conn_info.bssId;
		break;
	}
	case QDF_SAP_MODE:
	case QDF_P2P_GO_MODE:
	case QDF_IBSS_MODE:
	{
		bssid = &pHostapdAdapter->macAddressCurrent;
		break;
	}
	case QDF_FTM_MODE:
	case QDF_P2P_DEVICE_MODE:
	default:
		/*
		 * wlan_hdd_reset_prob_rspies should not have been called
		 * for these kind of devices
		 */
		hdd_err("Unexpected request for the current device type %d",
		       pHostapdAdapter->device_mode);
		return;
	}

	qdf_copy_macaddr(&updateIE.bssid, bssid);
	updateIE.smeSessionId = pHostapdAdapter->sessionId;
	updateIE.ieBufferlength = 0;
	updateIE.pAdditionIEBuffer = NULL;
	updateIE.append = true;
	updateIE.notify = false;
	if (sme_update_add_ie(WLAN_HDD_GET_HAL_CTX(pHostapdAdapter),
			      &updateIE,
			      eUPDATE_IE_PROBE_RESP) == QDF_STATUS_E_FAILURE) {
		hdd_err("Could not pass on PROBE_RSP_BCN data to PE");
	}
}

/**
 * hdd_wait_for_sme_close_sesion() - Close and wait for SME session close
 * @hdd_ctx: HDD context which is already NULL validated
 * @adapter: HDD adapter which is already NULL validated
 *
 * Close the SME session and wait for its completion, if needed.
 *
 * Return: None
 */
static void hdd_wait_for_sme_close_sesion(hdd_context_t *hdd_ctx,
					hdd_adapter_t *adapter)
{
	unsigned long rc;
	QDF_STATUS qdf_status;

	if (!test_bit(SME_SESSION_OPENED, &adapter->event_flags)) {
		hdd_err("session is not opened:%d", adapter->sessionId);
		return;
	}

	INIT_COMPLETION(adapter->session_close_comp_var);
	if (QDF_STATUS_SUCCESS ==
			sme_close_session(hdd_ctx->hHal, adapter->sessionId,
				hdd_sme_close_session_callback,
				adapter)) {
		/*
		 * Block on a completion variable. Can't wait
		 * forever though.
		 */
		rc = wait_for_completion_timeout(
				&adapter->session_close_comp_var,
				msecs_to_jiffies
				(WLAN_WAIT_TIME_SESSIONOPENCLOSE));
		if (!rc) {
			hdd_err("failure waiting for session_close_comp_var");
			if (adapter->device_mode == QDF_NDI_MODE)
				hdd_ndp_session_end_handler(adapter);
			clear_bit(SME_SESSION_OPENED, &adapter->event_flags);
			return;
		}
		qdf_status = hdd_release_and_destroy_vdev(adapter);
		if (QDF_IS_STATUS_ERROR(qdf_status))
			hdd_err("vdev delete failed");

		adapter->sessionId = HDD_SESSION_ID_INVALID;
	}
}

QDF_STATUS hdd_stop_adapter(hdd_context_t *hdd_ctx, hdd_adapter_t *adapter,
			    const bool bCloseSession)
{
	QDF_STATUS qdf_ret_status = QDF_STATUS_SUCCESS;
	hdd_wext_state_t *pWextState = WLAN_HDD_GET_WEXT_STATE_PTR(adapter);
	union iwreq_data wrqu;
	tSirUpdateIE updateIE;
	unsigned long rc;
	hdd_scaninfo_t *scan_info = NULL;

	ENTER();

	scan_info = &adapter->scan_info;
	hdd_notice("Disabling queues");
	wlan_hdd_netif_queue_control(adapter, WLAN_NETIF_TX_DISABLE_N_CARRIER,
				   WLAN_CONTROL_PATH);
	switch (adapter->device_mode) {
	case QDF_STA_MODE:
	case QDF_P2P_CLIENT_MODE:
	case QDF_IBSS_MODE:
	case QDF_P2P_DEVICE_MODE:
	case QDF_NDI_MODE:
		if ((QDF_NDI_MODE == adapter->device_mode) ||
			hdd_conn_is_connected(
				WLAN_HDD_GET_STATION_CTX_PTR(adapter)) ||
			hdd_is_connecting(
				WLAN_HDD_GET_STATION_CTX_PTR(adapter))) {
			INIT_COMPLETION(adapter->disconnect_comp_var);
			/*
			 * For NDI do not use pWextState from sta_ctx, if needed
			 * extract from ndi_ctx.
			 */
			if (QDF_NDI_MODE == adapter->device_mode)
				qdf_ret_status = sme_roam_disconnect(
					hdd_ctx->hHal,
					adapter->sessionId,
					eCSR_DISCONNECT_REASON_NDI_DELETE);
			else if (pWextState->roamProfile.BSSType ==
						eCSR_BSS_TYPE_START_IBSS)
				qdf_ret_status = sme_roam_disconnect(
					hdd_ctx->hHal,
					adapter->sessionId,
					eCSR_DISCONNECT_REASON_IBSS_LEAVE);
			else
				qdf_ret_status = sme_roam_disconnect(
					hdd_ctx->hHal,
					adapter->sessionId,
					eCSR_DISCONNECT_REASON_UNSPECIFIED);
			/* success implies disconnect command got queued up successfully */
			if (qdf_ret_status == QDF_STATUS_SUCCESS) {
				rc = wait_for_completion_timeout(
					&adapter->disconnect_comp_var,
					msecs_to_jiffies
						(WLAN_WAIT_TIME_DISCONNECT));
				if (!rc) {
					hdd_err("wait on disconnect_comp_var failed");
				}
			} else {
				hdd_err("failed to post disconnect event to SME");
			}
			memset(&wrqu, '\0', sizeof(wrqu));
			wrqu.ap_addr.sa_family = ARPHRD_ETHER;
			memset(wrqu.ap_addr.sa_data, '\0', ETH_ALEN);
			wireless_send_event(adapter->dev, SIOCGIWAP, &wrqu,
					    NULL);
		}
		if (scan_info != NULL && scan_info->mScanPending) {
			wlan_hdd_scan_abort(adapter);
		}
		hdd_lro_disable(hdd_ctx, adapter);
		wlan_hdd_cleanup_remain_on_channel_ctx(adapter);

#ifdef WLAN_OPEN_SOURCE
		cancel_work_sync(&adapter->ipv4NotifierWorkQueue);
#endif

		hdd_deregister_tx_flow_control(adapter);

#ifdef WLAN_NS_OFFLOAD
#ifdef WLAN_OPEN_SOURCE
		cancel_work_sync(&adapter->ipv6NotifierWorkQueue);
#endif
#endif

		/*
		 * It is possible that the caller of this function does not
		 * wish to close the session
		 */
		if (true == bCloseSession)
			hdd_wait_for_sme_close_sesion(hdd_ctx, adapter);
		break;

	case QDF_SAP_MODE:
	case QDF_P2P_GO_MODE:
		if (hdd_ctx->config->conc_custom_rule1 &&
			(QDF_SAP_MODE == adapter->device_mode)) {
			/*
			 * Before stopping the sap adapter, lets make sure there
			 * is no sap restart work pending.
			 */
			cds_flush_work(&hdd_ctx->sap_start_work);
			hdd_info("Canceled the pending SAP restart work");
			cds_change_sap_restart_required_status(false);
		}
		/* Any softap specific cleanup here... */
		if (adapter->device_mode == QDF_P2P_GO_MODE)
			wlan_hdd_cleanup_remain_on_channel_ctx(adapter);

		hdd_deregister_tx_flow_control(adapter);

		mutex_lock(&hdd_ctx->sap_lock);
		if (test_bit(SOFTAP_BSS_STARTED, &adapter->event_flags)) {
			QDF_STATUS status;
			QDF_STATUS qdf_status;

			/* Stop Bss. */
			status = wlansap_stop_bss(
					WLAN_HDD_GET_SAP_CTX_PTR(adapter));

			if (QDF_IS_STATUS_SUCCESS(status)) {
				hdd_hostapd_state_t *hostapd_state =
					WLAN_HDD_GET_HOSTAP_STATE_PTR(adapter);
				qdf_event_reset(&hostapd_state->
						qdf_stop_bss_event);
				qdf_status =
					qdf_wait_single_event(&hostapd_state->
					qdf_stop_bss_event,
					SME_CMD_TIMEOUT_VALUE);

				if (!QDF_IS_STATUS_SUCCESS(qdf_status)) {
					hdd_err("failure waiting for wlansap_stop_bss %d",
						qdf_status);
				}
			} else {
				hdd_err("failure in wlansap_stop_bss");
			}
			clear_bit(SOFTAP_BSS_STARTED, &adapter->event_flags);
			cds_decr_session_set_pcl(
						     adapter->device_mode,
							adapter->sessionId);

			qdf_copy_macaddr(&updateIE.bssid,
					 &adapter->macAddressCurrent);
			updateIE.smeSessionId = adapter->sessionId;
			updateIE.ieBufferlength = 0;
			updateIE.pAdditionIEBuffer = NULL;
			updateIE.append = false;
			updateIE.notify = false;
			/* Probe bcn reset */
			if (sme_update_add_ie(WLAN_HDD_GET_HAL_CTX(adapter),
					      &updateIE, eUPDATE_IE_PROBE_BCN)
			    == QDF_STATUS_E_FAILURE) {
				hdd_err("Could not pass on PROBE_RSP_BCN data to PE");
			}
			/* Assoc resp reset */
			if (sme_update_add_ie(WLAN_HDD_GET_HAL_CTX(adapter),
					      &updateIE,
					      eUPDATE_IE_ASSOC_RESP) ==
			    QDF_STATUS_E_FAILURE) {
				hdd_err("Could not pass on ASSOC_RSP data to PE");
			}
			/* Reset WNI_CFG_PROBE_RSP Flags */
			wlan_hdd_reset_prob_rspies(adapter);
			qdf_mem_free(adapter->sessionCtx.ap.beacon);
			adapter->sessionCtx.ap.beacon = NULL;
		}
		mutex_unlock(&hdd_ctx->sap_lock);
		if (true == bCloseSession)
			hdd_wait_for_sme_close_sesion(hdd_ctx, adapter);
		break;
	case QDF_OCB_MODE:
		cdp_peer_clear(cds_get_context(QDF_MODULE_ID_SOC),
			cds_get_context(QDF_MODULE_ID_TXRX),
			WLAN_HDD_GET_STATION_CTX_PTR(adapter)->conn_info.staId[0]);
		break;
	default:
		break;
	}

	EXIT();
	return QDF_STATUS_SUCCESS;
}

/**
 * hdd_deinit_all_adapters - deinit all adapters
 * @hdd_ctx:   HDD context
 * @rtnl_held: True if RTNL lock held
 *
 */
void  hdd_deinit_all_adapters(hdd_context_t *hdd_ctx, bool rtnl_held)
{
	hdd_adapter_list_node_t *adapter_node = NULL, *next = NULL;
	QDF_STATUS status;
	hdd_adapter_t *adapter;

	ENTER();

	status = hdd_get_front_adapter(hdd_ctx, &adapter_node);

	while (NULL != adapter_node && QDF_STATUS_SUCCESS == status) {
		adapter = adapter_node->pAdapter;
		hdd_deinit_adapter(hdd_ctx, adapter, rtnl_held);
		status = hdd_get_next_adapter(hdd_ctx, adapter_node, &next);
		adapter_node = next;
	}

	EXIT();
}

QDF_STATUS hdd_stop_all_adapters(hdd_context_t *hdd_ctx)
{
	hdd_adapter_list_node_t *adapterNode = NULL, *pNext = NULL;
	QDF_STATUS status;
	hdd_adapter_t *adapter;

	ENTER();

	cds_flush_work(&hdd_ctx->sap_pre_cac_work);

	status = hdd_get_front_adapter(hdd_ctx, &adapterNode);

	while (NULL != adapterNode && QDF_STATUS_SUCCESS == status) {
		adapter = adapterNode->pAdapter;
		hdd_stop_adapter(hdd_ctx, adapter, true);
		status = hdd_get_next_adapter(hdd_ctx, adapterNode, &pNext);
		adapterNode = pNext;
	}

	EXIT();

	return QDF_STATUS_SUCCESS;
}

QDF_STATUS hdd_reset_all_adapters(hdd_context_t *hdd_ctx)
{
	hdd_adapter_list_node_t *adapterNode = NULL, *pNext = NULL;
	QDF_STATUS status;
	hdd_adapter_t *adapter;

	ENTER();

	cds_flush_work(&hdd_ctx->sap_pre_cac_work);

	status = hdd_get_front_adapter(hdd_ctx, &adapterNode);

	while (NULL != adapterNode && QDF_STATUS_SUCCESS == status) {
		adapter = adapterNode->pAdapter;
		hdd_notice("Disabling queues");
		wlan_hdd_netif_queue_control(adapter,
					   WLAN_NETIF_TX_DISABLE_N_CARRIER,
					   WLAN_CONTROL_PATH);

		adapter->sessionCtx.station.hdd_ReassocScenario = false;

		hdd_deinit_tx_rx(adapter);
		cds_decr_session_set_pcl(adapter->device_mode,
						adapter->sessionId);
		if (test_bit(WMM_INIT_DONE, &adapter->event_flags)) {
			hdd_wmm_adapter_close(adapter);
			clear_bit(WMM_INIT_DONE, &adapter->event_flags);
		}

		/*
		 * If adapter is SAP, set session ID to invalid since SAP
		 * session will be cleanup during SSR.
		 */
		if (adapter->device_mode == QDF_SAP_MODE)
			wlansap_set_invalid_session(
				WLAN_HDD_GET_SAP_CTX_PTR(adapter));

		status = hdd_get_next_adapter(hdd_ctx, adapterNode, &pNext);
		adapterNode = pNext;
	}

	EXIT();

	return QDF_STATUS_SUCCESS;
}

/**
 * hdd_is_interface_up()- Checkfor interface up before ssr
 * @hdd_ctx: HDD context
 *
 * check  if there are any wlan interfaces before SSR accordingly start
 * the interface.
 *
 * Return: 0 if interface was opened else false
 */
static bool hdd_is_interface_up(hdd_adapter_t *adapter)
{
	if (test_bit(DEVICE_IFACE_OPENED, &adapter->event_flags))
		return true;
	else
		return false;
}

#if defined CFG80211_CONNECT_BSS
#if (LINUX_VERSION_CODE < KERNEL_VERSION(4, 1, 0)) \
	&& !defined(WITH_BACKPORTS) && !defined(IEEE80211_PRIVACY)
static
struct cfg80211_bss *hdd_cfg80211_get_bss(struct wiphy *wiphy,
					  struct ieee80211_channel *channel,
					  const u8 *bssid, const u8 *ssid,
					  size_t ssid_len)
{
	return cfg80211_get_bss(wiphy, channel, bssid,
				ssid, ssid_len,
				WLAN_CAPABILITY_ESS,
				WLAN_CAPABILITY_ESS);
}
#else
static
struct cfg80211_bss *hdd_cfg80211_get_bss(struct wiphy *wiphy,
					  struct ieee80211_channel *channel,
					  const u8 *bssid, const u8 *ssid,
					  size_t ssid_len)
{
	return cfg80211_get_bss(wiphy, channel, bssid,
				ssid, ssid_len,
				IEEE80211_BSS_TYPE_ESS,
				IEEE80211_PRIVACY_ANY);
}
#endif
#endif

#if defined CFG80211_CONNECT_BSS
/**
 * hdd_connect_bss() - API to send connection status to supplicant
 * @dev: network device
 * @bssid: bssid to which we want to associate
 * @req_ie: Request Information Element
 * @req_ie_len: len of the req IE
 * @resp_ie: Response IE
 * @resp_ie_len: len of ht response IE
 * @status: status
 * @gfp: Kernel Flag
 * @connect_timeout: If timed out waiting for Auth/Assoc/Probe resp
 *
 * The API is a wrapper to send connection status to supplicant
 *
 * Return: Void
 */
#if defined CFG80211_CONNECT_TIMEOUT
static void hdd_connect_bss(struct net_device *dev, const u8 *bssid,
			struct cfg80211_bss *bss, const u8 *req_ie,
			size_t req_ie_len, const u8 *resp_ie,
			size_t resp_ie_len, int status, gfp_t gfp,
			bool connect_timeout)
{
	if (connect_timeout)
		cfg80211_connect_timeout(dev, bssid, NULL, 0, GFP_KERNEL);
	else
		cfg80211_connect_bss(dev, bssid, bss, req_ie, req_ie_len,
			resp_ie, resp_ie_len, status, gfp);
}
#else
static void hdd_connect_bss(struct net_device *dev, const u8 *bssid,
			struct cfg80211_bss *bss, const u8 *req_ie,
			size_t req_ie_len, const u8 *resp_ie,
			size_t resp_ie_len, int status, gfp_t gfp,
			bool connect_timeout)
{
	cfg80211_connect_bss(dev, bssid, bss, req_ie, req_ie_len,
		resp_ie, resp_ie_len, status, gfp);
}
#endif

/**
 * hdd_connect_result() - API to send connection status to supplicant
 * @dev: network device
 * @bssid: bssid to which we want to associate
 * @roam_info: information about connected bss
 * @req_ie: Request Information Element
 * @req_ie_len: len of the req IE
 * @resp_ie: Response IE
 * @resp_ie_len: len of ht response IE
 * @status: status
 * @gfp: Kernel Flag
 * @connect_timeout: If timed out waiting for Auth/Assoc/Probe resp
 *
 * The API is a wrapper to send connection status to supplicant
 * and allow runtime suspend
 *
 * Return: Void
 */
void hdd_connect_result(struct net_device *dev, const u8 *bssid,
			tCsrRoamInfo *roam_info, const u8 *req_ie,
			size_t req_ie_len, const u8 *resp_ie,
			size_t resp_ie_len, u16 status, gfp_t gfp,
			bool connect_timeout)
{
	hdd_adapter_t *padapter = (hdd_adapter_t *) netdev_priv(dev);
	struct cfg80211_bss *bss = NULL;

	if (WLAN_STATUS_SUCCESS == status) {
		struct ieee80211_channel *chan;
		int freq;
		int chan_no = roam_info->pBssDesc->channelId;

		if (chan_no <= 14)
			freq = ieee80211_channel_to_frequency(chan_no,
			NL80211_BAND_2GHZ);
		else
			freq = ieee80211_channel_to_frequency(chan_no,
			NL80211_BAND_5GHZ);

		chan = ieee80211_get_channel(padapter->wdev.wiphy, freq);
		bss = hdd_cfg80211_get_bss(padapter->wdev.wiphy, chan, bssid,
			roam_info->u.pConnectedProfile->SSID.ssId,
			roam_info->u.pConnectedProfile->SSID.length);
	}

	hdd_connect_bss(dev, bssid, bss, req_ie,
		req_ie_len, resp_ie, resp_ie_len,
		status, gfp, connect_timeout);

	qdf_runtime_pm_allow_suspend(padapter->connect_rpm_ctx.connect);
}
#else
void hdd_connect_result(struct net_device *dev, const u8 *bssid,
			tCsrRoamInfo *roam_info, const u8 *req_ie,
			size_t req_ie_len, const u8 *resp_ie,
			size_t resp_ie_len, u16 status, gfp_t gfp,
			bool connect_timeout)
{
	hdd_adapter_t *padapter = (hdd_adapter_t *) netdev_priv(dev);

	cfg80211_connect_result(dev, bssid, req_ie, req_ie_len,
				resp_ie, resp_ie_len, status, gfp);
	qdf_runtime_pm_allow_suspend(padapter->connect_rpm_ctx.connect);
}
#endif


QDF_STATUS hdd_start_all_adapters(hdd_context_t *hdd_ctx)
{
	hdd_adapter_list_node_t *adapterNode = NULL, *pNext = NULL;
	QDF_STATUS status;
	hdd_adapter_t *adapter;
#ifndef MSM_PLATFORM
	struct qdf_mac_addr bcastMac = QDF_MAC_ADDR_BROADCAST_INITIALIZER;
#endif
	eConnectionState connState;

	ENTER();

	status = hdd_get_front_adapter(hdd_ctx, &adapterNode);
	while (NULL != adapterNode && QDF_STATUS_SUCCESS == status) {
		adapter = adapterNode->pAdapter;

		if (!hdd_is_interface_up(adapter))
			goto get_adapter;

		hdd_wmm_init(adapter);

		switch (adapter->device_mode) {
		case QDF_STA_MODE:
		case QDF_P2P_CLIENT_MODE:
		case QDF_P2P_DEVICE_MODE:

			connState = (WLAN_HDD_GET_STATION_CTX_PTR(adapter))
					->conn_info.connState;

			hdd_init_station_mode(adapter);
			/* Open the gates for HDD to receive Wext commands */
			adapter->isLinkUpSvcNeeded = false;
			adapter->scan_info.mScanPending = false;

			/* Indicate disconnect event to supplicant if associated previously */
			if (eConnectionState_Associated == connState ||
			    eConnectionState_IbssConnected == connState ||
			    eConnectionState_NotConnected == connState ||
			    eConnectionState_IbssDisconnected == connState ||
			    eConnectionState_Disconnecting == connState) {
				union iwreq_data wrqu;
				memset(&wrqu, '\0', sizeof(wrqu));
				wrqu.ap_addr.sa_family = ARPHRD_ETHER;
				memset(wrqu.ap_addr.sa_data, '\0', ETH_ALEN);
				wireless_send_event(adapter->dev, SIOCGIWAP,
						    &wrqu, NULL);
				adapter->sessionCtx.station.
				hdd_ReassocScenario = false;

				/* indicate disconnected event to nl80211 */
				wlan_hdd_cfg80211_indicate_disconnect(
						adapter->dev, false,
						WLAN_REASON_UNSPECIFIED);
			} else if (eConnectionState_Connecting == connState) {
				/*
				 * Indicate connect failure to supplicant if we were in the
				 * process of connecting
				 */
				hdd_connect_result(adapter->dev, NULL, NULL,
							NULL, 0, NULL, 0,
							WLAN_STATUS_ASSOC_DENIED_UNSPEC,
							GFP_KERNEL, false);
			}

			hdd_register_tx_flow_control(adapter,
					hdd_tx_resume_timer_expired_handler,
					hdd_tx_resume_cb);

			break;

		case QDF_SAP_MODE:
			/* softAP can handle SSR */
			break;

		case QDF_P2P_GO_MODE:
#ifdef MSM_PLATFORM
			hdd_err("[SSR] send stop ap to supplicant");
			cfg80211_ap_stopped(adapter->dev, GFP_KERNEL);
#else
			hdd_err("[SSR] send restart supplicant");
			/* event supplicant to restart */
			cfg80211_del_sta(adapter->dev,
					 (const u8 *)&bcastMac.bytes[0],
					 GFP_KERNEL);
#endif
			break;

		default:
			break;
		}
get_adapter:
		status = hdd_get_next_adapter(hdd_ctx, adapterNode, &pNext);
		adapterNode = pNext;
	}

	EXIT();

	return QDF_STATUS_SUCCESS;
}

QDF_STATUS hdd_get_front_adapter(hdd_context_t *hdd_ctx,
				 hdd_adapter_list_node_t **padapterNode)
{
	QDF_STATUS status;
	qdf_spin_lock_bh(&hdd_ctx->hdd_adapter_lock);
	status = qdf_list_peek_front(&hdd_ctx->hddAdapters,
				     (qdf_list_node_t **) padapterNode);
	qdf_spin_unlock_bh(&hdd_ctx->hdd_adapter_lock);
	return status;
}

QDF_STATUS hdd_get_next_adapter(hdd_context_t *hdd_ctx,
				hdd_adapter_list_node_t *adapterNode,
				hdd_adapter_list_node_t **pNextAdapterNode)
{
	QDF_STATUS status;
	qdf_spin_lock_bh(&hdd_ctx->hdd_adapter_lock);
	status = qdf_list_peek_next(&hdd_ctx->hddAdapters,
				    (qdf_list_node_t *) adapterNode,
				    (qdf_list_node_t **) pNextAdapterNode);

	qdf_spin_unlock_bh(&hdd_ctx->hdd_adapter_lock);
	return status;
}

QDF_STATUS hdd_remove_adapter(hdd_context_t *hdd_ctx,
			      hdd_adapter_list_node_t *adapterNode)
{
	QDF_STATUS status;
	qdf_spin_lock_bh(&hdd_ctx->hdd_adapter_lock);
	status = qdf_list_remove_node(&hdd_ctx->hddAdapters,
				      &adapterNode->node);
	qdf_spin_unlock_bh(&hdd_ctx->hdd_adapter_lock);
	return status;
}

QDF_STATUS hdd_remove_front_adapter(hdd_context_t *hdd_ctx,
				    hdd_adapter_list_node_t **padapterNode)
{
	QDF_STATUS status;
	qdf_spin_lock_bh(&hdd_ctx->hdd_adapter_lock);
	status = qdf_list_remove_front(&hdd_ctx->hddAdapters,
				       (qdf_list_node_t **) padapterNode);
	qdf_spin_unlock_bh(&hdd_ctx->hdd_adapter_lock);
	return status;
}

QDF_STATUS hdd_add_adapter_back(hdd_context_t *hdd_ctx,
				hdd_adapter_list_node_t *adapterNode)
{
	QDF_STATUS status;
	qdf_spin_lock_bh(&hdd_ctx->hdd_adapter_lock);
	status = qdf_list_insert_back(&hdd_ctx->hddAdapters,
				      (qdf_list_node_t *) adapterNode);
	qdf_spin_unlock_bh(&hdd_ctx->hdd_adapter_lock);
	return status;
}

QDF_STATUS hdd_add_adapter_front(hdd_context_t *hdd_ctx,
				 hdd_adapter_list_node_t *adapterNode)
{
	QDF_STATUS status;
	qdf_spin_lock_bh(&hdd_ctx->hdd_adapter_lock);
	status = qdf_list_insert_front(&hdd_ctx->hddAdapters,
				       (qdf_list_node_t *) adapterNode);
	qdf_spin_unlock_bh(&hdd_ctx->hdd_adapter_lock);
	return status;
}

hdd_adapter_t *hdd_get_adapter_by_macaddr(hdd_context_t *hdd_ctx,
					  tSirMacAddr macAddr)
{
	hdd_adapter_list_node_t *adapterNode = NULL, *pNext = NULL;
	hdd_adapter_t *adapter;
	QDF_STATUS status;

	status = hdd_get_front_adapter(hdd_ctx, &adapterNode);

	while (NULL != adapterNode && QDF_STATUS_SUCCESS == status) {
		adapter = adapterNode->pAdapter;

		if (adapter
		    && !qdf_mem_cmp(adapter->macAddressCurrent.bytes,
				       macAddr, sizeof(tSirMacAddr))) {
			return adapter;
		}
		status = hdd_get_next_adapter(hdd_ctx, adapterNode, &pNext);
		adapterNode = pNext;
	}

	return NULL;

}

hdd_adapter_t *hdd_get_adapter_by_vdev(hdd_context_t *hdd_ctx,
				       uint32_t vdev_id)
{
	hdd_adapter_list_node_t *adapterNode = NULL, *pNext = NULL;
	hdd_adapter_t *adapter;
	QDF_STATUS qdf_status;

	qdf_status = hdd_get_front_adapter(hdd_ctx, &adapterNode);

	while ((NULL != adapterNode) && (QDF_STATUS_SUCCESS == qdf_status)) {
		adapter = adapterNode->pAdapter;

		if (adapter->sessionId == vdev_id)
			return adapter;

		qdf_status =
			hdd_get_next_adapter(hdd_ctx, adapterNode, &pNext);
		adapterNode = pNext;
	}

	hdd_err("vdev_id %d does not exist with host", vdev_id);

	return NULL;
}

/**
 * hdd_get_adapter_by_sme_session_id() - Return adapter with
 * the sessionid
 * @hdd_ctx: hdd context.
 * @sme_session_id: sme session is for the adapter to get.
 *
 * This function is used to get the adapter with provided session id
 *
 * Return: adapter pointer if found
 *
 */
hdd_adapter_t *hdd_get_adapter_by_sme_session_id(hdd_context_t *hdd_ctx,
						uint32_t sme_session_id)
{
	hdd_adapter_list_node_t *adapter_node = NULL, *next = NULL;
	hdd_adapter_t *adapter;
	QDF_STATUS qdf_status;


	qdf_status = hdd_get_front_adapter(hdd_ctx, &adapter_node);

	while ((NULL != adapter_node) &&
			(QDF_STATUS_SUCCESS == qdf_status)) {
		adapter = adapter_node->pAdapter;

		if (adapter &&
			 adapter->sessionId == sme_session_id)
			return adapter;

		qdf_status =
			hdd_get_next_adapter(hdd_ctx,
				 adapter_node, &next);
		adapter_node = next;
	}
	return NULL;
}

/**
 * hdd_get_adapter() - to get adapter matching the mode
 * @hdd_ctx: hdd context
 * @mode: adapter mode
 *
 * This routine will return the pointer to adapter matching
 * with the passed mode.
 *
 * Return: pointer to adapter or null
 */
hdd_adapter_t *hdd_get_adapter(hdd_context_t *hdd_ctx,
			enum tQDF_ADAPTER_MODE mode)
{
	hdd_adapter_list_node_t *adapterNode = NULL, *pNext = NULL;
	hdd_adapter_t *adapter;
	QDF_STATUS status;

	status = hdd_get_front_adapter(hdd_ctx, &adapterNode);

	while (NULL != adapterNode && QDF_STATUS_SUCCESS == status) {
		adapter = adapterNode->pAdapter;

		if (adapter && (mode == adapter->device_mode))
			return adapter;

		status = hdd_get_next_adapter(hdd_ctx, adapterNode, &pNext);
		adapterNode = pNext;
	}

	return NULL;

}

/**
 * hdd_get_operating_channel() - return operating channel of the device mode
 * @hdd_ctx:	Pointer to the HDD context.
 * @mode:	Device mode for which operating channel is required.
 *              Suported modes:
 *			QDF_STA_MODE,
 *			QDF_P2P_CLIENT_MODE,
 *			QDF_SAP_MODE,
 *			QDF_P2P_GO_MODE.
 *
 * This API returns the operating channel of the requested device mode
 *
 * Return: channel number. "0" id the requested device is not found OR it is
 *	   not connected.
 */
uint8_t hdd_get_operating_channel(hdd_context_t *hdd_ctx,
			enum tQDF_ADAPTER_MODE mode)
{
	hdd_adapter_list_node_t *adapterNode = NULL, *pNext = NULL;
	QDF_STATUS status;
	hdd_adapter_t *adapter;
	uint8_t operatingChannel = 0;

	status = hdd_get_front_adapter(hdd_ctx, &adapterNode);

	while (NULL != adapterNode && QDF_STATUS_SUCCESS == status) {
		adapter = adapterNode->pAdapter;

		if (mode == adapter->device_mode) {
			switch (adapter->device_mode) {
			case QDF_STA_MODE:
			case QDF_P2P_CLIENT_MODE:
				if (hdd_conn_is_connected
					    (WLAN_HDD_GET_STATION_CTX_PTR
						(adapter))) {
					operatingChannel =
						(WLAN_HDD_GET_STATION_CTX_PTR
						(adapter))->conn_info.
							operationChannel;
				}
				break;
			case QDF_SAP_MODE:
			case QDF_P2P_GO_MODE:
				/* softap connection info */
				if (test_bit
					    (SOFTAP_BSS_STARTED,
					    &adapter->event_flags))
					operatingChannel =
						(WLAN_HDD_GET_AP_CTX_PTR
						(adapter))->operatingChannel;
				break;
			default:
				break;
			}

			break;  /* Found the device of interest. break the loop */
		}

		status = hdd_get_next_adapter(hdd_ctx, adapterNode, &pNext);
		adapterNode = pNext;
	}
	return operatingChannel;
}

static inline QDF_STATUS hdd_unregister_wext_all_adapters(hdd_context_t *
							  hdd_ctx)
{
	hdd_adapter_list_node_t *adapterNode = NULL, *pNext = NULL;
	QDF_STATUS status;
	hdd_adapter_t *adapter;

	ENTER();

	status = hdd_get_front_adapter(hdd_ctx, &adapterNode);

	while (NULL != adapterNode && QDF_STATUS_SUCCESS == status) {
		adapter = adapterNode->pAdapter;
		if ((adapter->device_mode == QDF_STA_MODE) ||
		    (adapter->device_mode == QDF_P2P_CLIENT_MODE) ||
		    (adapter->device_mode == QDF_IBSS_MODE) ||
		    (adapter->device_mode == QDF_P2P_DEVICE_MODE) ||
		    (adapter->device_mode == QDF_SAP_MODE) ||
		    (adapter->device_mode == QDF_P2P_GO_MODE)) {
			wlan_hdd_cfg80211_deregister_frames(adapter);
			hdd_unregister_wext(adapter->dev);
		}
		status = hdd_get_next_adapter(hdd_ctx, adapterNode, &pNext);
		adapterNode = pNext;
	}

	EXIT();

	return QDF_STATUS_SUCCESS;
}

QDF_STATUS hdd_abort_mac_scan_all_adapters(hdd_context_t *hdd_ctx)
{
	hdd_adapter_list_node_t *adapterNode = NULL, *pNext = NULL;
	QDF_STATUS status;
	hdd_adapter_t *adapter;

	ENTER();

	status = hdd_get_front_adapter(hdd_ctx, &adapterNode);

	while (NULL != adapterNode && QDF_STATUS_SUCCESS == status) {
		adapter = adapterNode->pAdapter;
		if ((adapter->device_mode == QDF_STA_MODE) ||
		    (adapter->device_mode == QDF_P2P_CLIENT_MODE) ||
		    (adapter->device_mode == QDF_IBSS_MODE) ||
		    (adapter->device_mode == QDF_P2P_DEVICE_MODE) ||
		    (adapter->device_mode == QDF_SAP_MODE) ||
		    (adapter->device_mode == QDF_P2P_GO_MODE)) {
			hdd_abort_mac_scan(hdd_ctx, adapter->sessionId,
					   eCSR_SCAN_ABORT_DEFAULT);
		}
		status = hdd_get_next_adapter(hdd_ctx, adapterNode, &pNext);
		adapterNode = pNext;
	}

	EXIT();

	return QDF_STATUS_SUCCESS;
}

/**
 * hdd_abort_sched_scan_all_adapters() - stops scheduled (PNO) scans for all
 * adapters
 * @hdd_ctx: The HDD context containing the adapters to operate on
 *
 * return: QDF_STATUS_SUCCESS
 */
static QDF_STATUS hdd_abort_sched_scan_all_adapters(hdd_context_t *hdd_ctx)
{
	hdd_adapter_list_node_t *adapter_node = NULL, *next_node = NULL;
	QDF_STATUS status;
	hdd_adapter_t *adapter;
	int err;

	ENTER();

	status = hdd_get_front_adapter(hdd_ctx, &adapter_node);

	while (NULL != adapter_node && QDF_STATUS_SUCCESS == status) {
		adapter = adapter_node->pAdapter;
		if ((adapter->device_mode == QDF_STA_MODE) ||
		    (adapter->device_mode == QDF_P2P_CLIENT_MODE) ||
		    (adapter->device_mode == QDF_IBSS_MODE) ||
		    (adapter->device_mode == QDF_P2P_DEVICE_MODE) ||
		    (adapter->device_mode == QDF_SAP_MODE) ||
		    (adapter->device_mode == QDF_P2P_GO_MODE)) {
			err = wlan_hdd_sched_scan_stop(adapter->dev);
			if (err)
				hdd_err("Unable to stop scheduled scan");
		}
		status = hdd_get_next_adapter(hdd_ctx, adapter_node, &next_node);
		adapter_node = next_node;
	}

	EXIT();

	return QDF_STATUS_SUCCESS;
}

#ifdef WLAN_NS_OFFLOAD
/**
 * hdd_wlan_unregister_ip6_notifier() - unregister IPv6 change notifier
 * @hdd_ctx: Pointer to hdd context
 *
 * Unregister for IPv6 address change notifications.
 *
 * Return: None
 */
static void hdd_wlan_unregister_ip6_notifier(hdd_context_t *hdd_ctx)
{
	unregister_inet6addr_notifier(&hdd_ctx->ipv6_notifier);

	return;
}

/**
 * hdd_wlan_register_ip6_notifier() - register IPv6 change notifier
 * @hdd_ctx: Pointer to hdd context
 *
 * Register for IPv6 address change notifications.
 *
 * Return: 0 on success and errno on failure.
 */
static int hdd_wlan_register_ip6_notifier(hdd_context_t *hdd_ctx)
{
	int ret;

	hdd_ctx->ipv6_notifier.notifier_call = wlan_hdd_ipv6_changed;
	ret = register_inet6addr_notifier(&hdd_ctx->ipv6_notifier);
	if (ret) {
		hdd_err("Failed to register IPv6 notifier: %d", ret);
		goto out;
	}

	hdd_info("Registered IPv6 notifier");
out:
	return ret;
}
#else
/**
 * hdd_wlan_unregister_ip6_notifier() - unregister IPv6 change notifier
 * @hdd_ctx: Pointer to hdd context
 *
 * Unregister for IPv6 address change notifications.
 *
 * Return: None
 */
static void hdd_wlan_unregister_ip6_notifier(hdd_context_t *hdd_ctx)
{
}

/**
 * hdd_wlan_register_ip6_notifier() - register IPv6 change notifier
 * @hdd_ctx: Pointer to hdd context
 *
 * Register for IPv6 address change notifications.
 *
 * Return: None
 */
static int hdd_wlan_register_ip6_notifier(hdd_context_t *hdd_ctx)
{
	return 0;
}
#endif

#ifdef WLAN_LOGGING_SOCK_SVC_ENABLE
/**
 * hdd_logging_sock_activate_svc() - Activate logging
 * @hdd_ctx: HDD context
 *
 * Activates the logging service
 *
 * Return: Zero in case of success, negative value otherwise
 */
static int hdd_logging_sock_activate_svc(hdd_context_t *hdd_ctx)
{
	int ret;
	struct hdd_config *config = hdd_ctx->config;

	if (!config->wlanLoggingEnable)
		return 0;

	ret = wlan_logging_sock_activate_svc(config->wlanLoggingFEToConsole,
					     config->wlanLoggingNumBuf);
	if (ret)
		hdd_err("wlan_logging_sock_activate_svc failed: %d", ret);
	return ret;
}

/**
 * wlan_hdd_logging_sock_deactivate_svc() - Deactivate logging
 * @hdd_ctx: HDD context
 *
 * Deactivates the logging service
 *
 * Return: 0 on deactivating the logging service
 */
static int hdd_logging_sock_deactivate_svc(hdd_context_t *hdd_ctx)
{
	if (hdd_ctx && hdd_ctx->config->wlanLoggingEnable)
		return wlan_logging_sock_deactivate_svc();

	return 0;
}
#else
static inline int hdd_logging_sock_activate_svc(hdd_context_t *hdd_ctx)
{
	return 0;
}

static inline int hdd_logging_sock_deactivate_svc(hdd_context_t *hdd_ctx)
{
	return 0;
}
#endif

/**
 * hdd_register_notifiers - Register netdev notifiers.
 * @hdd_ctx: HDD context
 *
 * Register netdev notifiers like IPv4 and IPv6.
 *
 * Return: 0 on success and errno on failure
 */
static int hdd_register_notifiers(hdd_context_t *hdd_ctx)
{
	int ret;

	ret = register_netdevice_notifier(&hdd_netdev_notifier);
	if (ret) {
		hdd_err("register_netdevice_notifier failed: %d", ret);
		goto out;
	}

	ret = hdd_wlan_register_ip6_notifier(hdd_ctx);
	if (ret)
		goto unregister_notifier;

	hdd_ctx->ipv4_notifier.notifier_call = wlan_hdd_ipv4_changed;
	ret = register_inetaddr_notifier(&hdd_ctx->ipv4_notifier);
	if (ret) {
		hdd_err("Failed to register IPv4 notifier: %d", ret);
		goto unregister_ip6_notifier;
	}

	return 0;

unregister_ip6_notifier:
	hdd_wlan_unregister_ip6_notifier(hdd_ctx);
unregister_notifier:
	unregister_netdevice_notifier(&hdd_netdev_notifier);
out:
	return ret;

}

/**
 * hdd_unregister_notifiers - Unregister netdev notifiers.
 * @hdd_ctx: HDD context
 *
 * Unregister netdev notifiers like IPv4 and IPv6.
 *
 * Return: None.
 */
static void hdd_unregister_notifiers(hdd_context_t *hdd_ctx)
{
	hdd_wlan_unregister_ip6_notifier(hdd_ctx);

	unregister_inetaddr_notifier(&hdd_ctx->ipv4_notifier);

	unregister_netdevice_notifier(&hdd_netdev_notifier);
}

/**
 * hdd_exit_netlink_services - Exit netlink services
 * @hdd_ctx: HDD context
 *
 * Exit netlink services like cnss_diag, cesium netlink socket, ptt socket and
 * nl service.
 *
 * Return: None.
 */
static void hdd_exit_netlink_services(hdd_context_t *hdd_ctx)
{
	hdd_close_cesium_nl_sock();

	ptt_sock_deactivate_svc();

	nl_srv_exit();
}

/**
 * hdd_init_netlink_services- Init netlink services
 * @hdd_ctx: HDD context
 *
 * Init netlink services like cnss_diag, cesium netlink socket, ptt socket and
 * nl service.
 *
 * Return: 0 on success and errno on failure.
 */
static int hdd_init_netlink_services(hdd_context_t *hdd_ctx)
{
	int ret;

	ret = wlan_hdd_nl_init(hdd_ctx);
	if (ret) {
		hdd_alert("nl_srv_init failed: %d", ret);
		goto out;
	}
	cds_set_radio_index(hdd_ctx->radio_index);

	ret = oem_activate_service(hdd_ctx);
	if (ret) {
		hdd_alert("oem_activate_service failed: %d", ret);
		goto err_nl_srv;
	}

	ret = ptt_sock_activate_svc();
	if (ret) {
		hdd_alert("ptt_sock_activate_svc failed: %d", ret);
		goto err_nl_srv;
	}

	ret = hdd_open_cesium_nl_sock();
	if (ret)
		hdd_warn("hdd_open_cesium_nl_sock failed");

	ret = cnss_diag_activate_service();
	if (ret) {
		hdd_alert("cnss_diag_activate_service failed: %d", ret);
		goto err_close_cesium;
	}

	return 0;

err_close_cesium:
	hdd_close_cesium_nl_sock();
	ptt_sock_deactivate_svc();
err_nl_srv:
	nl_srv_exit();
out:
	return ret;
}

/**
 * hdd_rx_wake_lock_destroy() - Destroy RX wakelock
 * @hdd_ctx:	HDD context.
 *
 * Destroy RX wakelock.
 *
 * Return: None.
 */
static void hdd_rx_wake_lock_destroy(hdd_context_t *hdd_ctx)
{
	qdf_wake_lock_destroy(&hdd_ctx->rx_wake_lock);
}

/**
 * hdd_rx_wake_lock_create() - Create RX wakelock
 * @hdd_ctx:	HDD context.
 *
 * Create RX wakelock.
 *
 * Return: None.
 */
static void hdd_rx_wake_lock_create(hdd_context_t *hdd_ctx)
{
	qdf_wake_lock_create(&hdd_ctx->rx_wake_lock, "qcom_rx_wakelock");
}

/**
 * hdd_roc_context_init() - Init ROC context
 * @hdd_ctx:	HDD context.
 *
 * Initialize ROC context.
 *
 * Return: 0 on success and errno on failure.
 */
static int hdd_roc_context_init(hdd_context_t *hdd_ctx)
{
	qdf_spinlock_create(&hdd_ctx->hdd_roc_req_q_lock);
	qdf_list_create(&hdd_ctx->hdd_roc_req_q, MAX_ROC_REQ_QUEUE_ENTRY);

	INIT_DELAYED_WORK(&hdd_ctx->roc_req_work, wlan_hdd_roc_request_dequeue);

	return 0;
}

/**
 * hdd_roc_context_destroy() - Destroy ROC context
 * @hdd_ctx:	HDD context.
 *
 * Destroy roc list and flush the pending roc work.
 *
 * Return: None.
 */
static void hdd_roc_context_destroy(hdd_context_t *hdd_ctx)
{
	flush_delayed_work(&hdd_ctx->roc_req_work);
	qdf_list_destroy(&hdd_ctx->hdd_roc_req_q);
}

/**
 * hdd_context_deinit() - Deinitialize HDD context
 * @hdd_ctx:    HDD context.
 *
 * Deinitialize HDD context along with all the feature specific contexts but
 * do not free hdd context itself. Caller of this API is supposed to free
 * HDD context.
 *
 * return: 0 on success and errno on failure.
 */
static int hdd_context_deinit(hdd_context_t *hdd_ctx)
{
	wlan_hdd_cfg80211_deinit(hdd_ctx->wiphy);

	hdd_roc_context_destroy(hdd_ctx);

	hdd_sap_context_destroy(hdd_ctx);

	hdd_rx_wake_lock_destroy(hdd_ctx);

	hdd_tdls_context_destroy(hdd_ctx);

	hdd_scan_context_destroy(hdd_ctx);

	qdf_list_destroy(&hdd_ctx->hddAdapters);

	return 0;
}

/**
 * hdd_context_destroy() - Destroy HDD context
 * @hdd_ctx:	HDD context to be destroyed.
 *
 * Free config and HDD context as well as destroy all the resources.
 *
 * Return: None
 */
static void hdd_context_destroy(hdd_context_t *hdd_ctx)
{
	if (QDF_GLOBAL_FTM_MODE != hdd_get_conparam())
		hdd_logging_sock_deactivate_svc(hdd_ctx);

	wlan_hdd_deinit_tx_rx_histogram(hdd_ctx);

	hdd_context_deinit(hdd_ctx);

	qdf_mem_free(hdd_ctx->config);
	hdd_ctx->config = NULL;

	wiphy_free(hdd_ctx->wiphy);
}

/**
 * hdd_wlan_exit() - HDD WLAN exit function
 * @hdd_ctx:	Pointer to the HDD Context
 *
 * This is the driver exit point (invoked during rmmod)
 *
 * Return: None
 */
static void hdd_wlan_exit(hdd_context_t *hdd_ctx)
{
	v_CONTEXT_t p_cds_context = hdd_ctx->pcds_context;
	QDF_STATUS qdf_status;
	struct wiphy *wiphy = hdd_ctx->wiphy;
	int driver_status;

	ENTER();

	if (QDF_TIMER_STATE_RUNNING ==
		qdf_mc_timer_get_current_state(&hdd_ctx->iface_change_timer)) {
		hdd_info("Stpp interface change timer");
		qdf_mc_timer_stop(&hdd_ctx->iface_change_timer);
	}

	if (!QDF_IS_STATUS_SUCCESS
	   (qdf_mc_timer_destroy(&hdd_ctx->iface_change_timer)))
		hdd_err("Cannot delete interface change timer");


	hdd_unregister_notifiers(hdd_ctx);

	qdf_mc_timer_destroy(&hdd_ctx->tdls_source_timer);

	hdd_bus_bandwidth_destroy(hdd_ctx);

#ifdef FEATURE_WLAN_AP_AP_ACS_OPTIMIZE
	if (QDF_TIMER_STATE_RUNNING ==
	    qdf_mc_timer_get_current_state(&hdd_ctx->skip_acs_scan_timer)) {
		qdf_mc_timer_stop(&hdd_ctx->skip_acs_scan_timer);
	}

	if (!QDF_IS_STATUS_SUCCESS
		    (qdf_mc_timer_destroy(&hdd_ctx->skip_acs_scan_timer))) {
		hdd_err("Cannot deallocate ACS Skip timer");
	}
	qdf_spin_lock(&hdd_ctx->acs_skip_lock);
	qdf_mem_free(hdd_ctx->last_acs_channel_list);
	hdd_ctx->last_acs_channel_list = NULL;
	hdd_ctx->num_of_channels = 0;
	qdf_spin_unlock(&hdd_ctx->acs_skip_lock);
#endif

	mutex_lock(&hdd_ctx->iface_change_lock);
	driver_status = hdd_ctx->driver_status;
	mutex_unlock(&hdd_ctx->iface_change_lock);

	/*
	 * Powersave Offload Case
	 * Disable Idle Power Save Mode
	 */
	hdd_set_idle_ps_config(hdd_ctx, false);

	if (driver_status != DRIVER_MODULES_CLOSED) {
		hdd_unregister_wext_all_adapters(hdd_ctx);
		/*
		 * Cancel any outstanding scan requests.  We are about to close
		 * all of our adapters, but an adapter structure is what SME
		 * passes back to our callback function.  Hence if there
		 * are any outstanding scan requests then there is a
		 * race condition between when the adapter is closed and
		 * when the callback is invoked.  We try to resolve that
		 * race condition here by canceling any outstanding scans
		 * before we close the adapters.
		 * Note that the scans may be cancelled in an asynchronous
		 * manner, so ideally there needs to be some kind of
		 * synchronization.  Rather than introduce a new
		 * synchronization here, we will utilize the fact that we are
		 * about to Request Full Power, and since that is synchronized,
		 * the expectation is that by the time Request Full Power has
		 * completed, all scans will be cancelled
		 */
		hdd_abort_mac_scan_all_adapters(hdd_ctx);
		hdd_abort_sched_scan_all_adapters(hdd_ctx);
		hdd_stop_all_adapters(hdd_ctx);
	}

	/*
	 * Close the scheduler before calling cds_close to make sure no thread
	 * is scheduled after the each module close is called i.e after all the
	 * data structures are freed.
	 */
	qdf_status = cds_sched_close(p_cds_context);
	if (!QDF_IS_STATUS_SUCCESS(qdf_status)) {
		hdd_alert("Failed to close CDS Scheduler");
		QDF_ASSERT(QDF_IS_STATUS_SUCCESS(qdf_status));
	}

	hdd_wlan_stop_modules(hdd_ctx);

	qdf_spinlock_destroy(&hdd_ctx->hdd_adapter_lock);
	qdf_spinlock_destroy(&hdd_ctx->sta_update_info_lock);
	qdf_spinlock_destroy(&hdd_ctx->connection_status_lock);

	/*
	 * Close CDS
	 * This frees pMac(HAL) context. There should not be any call
	 * that requires pMac access after this.
	 */

	hdd_green_ap_deinit(hdd_ctx);

	hdd_runtime_suspend_context_deinit(hdd_ctx);
	hdd_close_all_adapters(hdd_ctx, false);

	hdd_ipa_cleanup(hdd_ctx);

	/* Free up RoC request queue and flush workqueue */
	cds_flush_work(&hdd_ctx->roc_req_work);

	wlansap_global_deinit();
	wiphy_unregister(wiphy);
	wlan_hdd_cfg80211_deinit(wiphy);

	hdd_lpass_notify_stop(hdd_ctx);

	hdd_exit_netlink_services(hdd_ctx);
	mutex_destroy(&hdd_ctx->iface_change_lock);
	hdd_context_destroy(hdd_ctx);
}

void __hdd_wlan_exit(void)
{
	hdd_context_t *hdd_ctx;

	ENTER();

	hdd_ctx = cds_get_context(QDF_MODULE_ID_HDD);
	if (!hdd_ctx) {
		hdd_alert("Invalid HDD Context");
		EXIT();
		return;
	}

	/* Check IPA HW Pipe shutdown */
	hdd_ipa_uc_force_pipe_shutdown(hdd_ctx);

	memdump_deinit();
	hdd_driver_memdump_deinit();

	/* Do all the cleanup before deregistering the driver */
	hdd_wlan_exit(hdd_ctx);

	EXIT();
}

#ifdef FEATURE_WLAN_AP_AP_ACS_OPTIMIZE
/**
 * hdd_skip_acs_scan_timer_handler() - skip ACS scan timer timeout handler
 * @data: pointer to hdd_context_t
 *
 * This function will reset acs_scan_status to eSAP_DO_NEW_ACS_SCAN.
 * Then new ACS request will do a fresh scan without reusing the cached
 * scan information.
 *
 * Return: void
 */
void hdd_skip_acs_scan_timer_handler(void *data)
{
	hdd_context_t *hdd_ctx = (hdd_context_t *) data;

	hdd_notice("ACS Scan result expired. Reset ACS scan skip");
	hdd_ctx->skip_acs_scan_status = eSAP_DO_NEW_ACS_SCAN;
	qdf_spin_lock(&hdd_ctx->acs_skip_lock);
	qdf_mem_free(hdd_ctx->last_acs_channel_list);
	hdd_ctx->last_acs_channel_list = NULL;
	hdd_ctx->num_of_channels = 0;
	qdf_spin_unlock(&hdd_ctx->acs_skip_lock);

	if (!hdd_ctx->hHal)
		return;
	sme_scan_flush_result(hdd_ctx->hHal);
}
#endif

#ifdef QCA_HT_2040_COEX
/**
 * hdd_wlan_set_ht2040_mode() - notify FW with HT20/HT40 mode
 * @adapter: pointer to adapter
 * @staId: station id
 * @macAddrSTA: station MAC address
 * @channel_type: channel type
 *
 * This function notifies FW with HT20/HT40 mode
 *
 * Return: 0 if successful, error number otherwise
 */
int hdd_wlan_set_ht2040_mode(hdd_adapter_t *adapter, uint16_t staId,
			     struct qdf_mac_addr macAddrSTA, int channel_type)
{
	int status;
	QDF_STATUS qdf_status;
	hdd_context_t *hdd_ctx = NULL;

	hdd_ctx = WLAN_HDD_GET_CTX(adapter);

	status = wlan_hdd_validate_context(hdd_ctx);
	if (status)
		return status;

	if (!hdd_ctx->hHal)
		return -EINVAL;

	qdf_status = sme_notify_ht2040_mode(hdd_ctx->hHal, staId, macAddrSTA,
					    adapter->sessionId, channel_type);
	if (QDF_STATUS_SUCCESS != qdf_status) {
		hdd_err("Fail to send notification with ht2040 mode");
		return -EINVAL;
	}

	return 0;
}
#endif

/**
 * hdd_wlan_notify_modem_power_state() - notify FW with modem power status
 * @state: state
 *
 * This function notifies FW with modem power status
 *
 * Return: 0 if successful, error number otherwise
 */
int hdd_wlan_notify_modem_power_state(int state)
{
	int status;
	QDF_STATUS qdf_status;
	hdd_context_t *hdd_ctx;

	hdd_ctx = cds_get_context(QDF_MODULE_ID_HDD);
	status = wlan_hdd_validate_context(hdd_ctx);
	if (status)
		return status;

	if (!hdd_ctx->hHal)
		return -EINVAL;

	qdf_status = sme_notify_modem_power_state(hdd_ctx->hHal, state);
	if (QDF_STATUS_SUCCESS != qdf_status) {
		hdd_err("Fail to send notification with modem power state %d",
		       state);
		return -EINVAL;
	}
	return 0;
}

/**
 *
 * hdd_post_cds_enable_config() - HDD post cds start config helper
 * @adapter - Pointer to the HDD
 *
 * Return: None
 */
QDF_STATUS hdd_post_cds_enable_config(hdd_context_t *hdd_ctx)
{
	QDF_STATUS qdf_ret_status;

	/*
	 * Send ready indication to the HDD.  This will kick off the MAC
	 * into a 'running' state and should kick off an initial scan.
	 */
	qdf_ret_status = sme_hdd_ready_ind(hdd_ctx->hHal);
	if (!QDF_IS_STATUS_SUCCESS(qdf_ret_status)) {
		hdd_err("sme_hdd_ready_ind() failed with status code %08d [x%08x]",
			qdf_ret_status, qdf_ret_status);
		return QDF_STATUS_E_FAILURE;
	}

	return QDF_STATUS_SUCCESS;
}

/* wake lock APIs for HDD */
void hdd_prevent_suspend(uint32_t reason)
{
	qdf_wake_lock_acquire(&wlan_wake_lock, reason);
}

void hdd_allow_suspend(uint32_t reason)
{
	qdf_wake_lock_release(&wlan_wake_lock, reason);
}

void hdd_prevent_suspend_timeout(uint32_t timeout, uint32_t reason)
{
	cds_host_diag_log_work(&wlan_wake_lock, timeout, reason);
	qdf_wake_lock_timeout_acquire(&wlan_wake_lock, timeout);
}

/**
 * hdd_exchange_version_and_caps() - exchange version and capability with target
 * @hdd_ctx:	Pointer to HDD context
 *
 * This is the HDD function to exchange version and capability information
 * between Host and Target
 *
 * This function gets reported version of FW.
 * It also finds the version of target headers used to compile the host;
 * It compares the above two and prints a warning if they are different;
 * It gets the SW and HW version string;
 * Finally, it exchanges capabilities between host and target i.e. host
 * and target exchange a msg indicating the features they support through a
 * bitmap
 *
 * Return: None
 */
void hdd_exchange_version_and_caps(hdd_context_t *hdd_ctx)
{

	tSirVersionType versionCompiled;
	tSirVersionType versionReported;
	tSirVersionString versionString;
	uint8_t fwFeatCapsMsgSupported = 0;
	QDF_STATUS vstatus;

	memset(&versionCompiled, 0, sizeof(versionCompiled));
	memset(&versionReported, 0, sizeof(versionReported));

	/* retrieve and display WCNSS version information */
	do {

		vstatus = sme_get_wcnss_wlan_compiled_version(hdd_ctx->hHal,
							      &versionCompiled);
		if (!QDF_IS_STATUS_SUCCESS(vstatus)) {
			hdd_alert("unable to retrieve WCNSS WLAN compiled version");
			break;
		}

		vstatus = sme_get_wcnss_wlan_reported_version(hdd_ctx->hHal,
							      &versionReported);
		if (!QDF_IS_STATUS_SUCCESS(vstatus)) {
			hdd_alert("unable to retrieve WCNSS WLAN reported version");
			break;
		}

		if ((versionCompiled.major != versionReported.major) ||
		    (versionCompiled.minor != versionReported.minor) ||
		    (versionCompiled.version != versionReported.version) ||
		    (versionCompiled.revision != versionReported.revision)) {
			pr_err("%s: WCNSS WLAN Version %u.%u.%u.%u, "
			       "Host expected %u.%u.%u.%u\n",
			       WLAN_MODULE_NAME,
			       (int)versionReported.major,
			       (int)versionReported.minor,
			       (int)versionReported.version,
			       (int)versionReported.revision,
			       (int)versionCompiled.major,
			       (int)versionCompiled.minor,
			       (int)versionCompiled.version,
			       (int)versionCompiled.revision);
		} else {
			pr_info("%s: WCNSS WLAN version %u.%u.%u.%u\n",
				WLAN_MODULE_NAME,
				(int)versionReported.major,
				(int)versionReported.minor,
				(int)versionReported.version,
				(int)versionReported.revision);
		}

		vstatus = sme_get_wcnss_software_version(hdd_ctx->hHal,
							 versionString,
							 sizeof(versionString));
		if (!QDF_IS_STATUS_SUCCESS(vstatus)) {
			hdd_alert("unable to retrieve WCNSS software version string");
			break;
		}

		pr_info("%s: WCNSS software version %s\n",
			WLAN_MODULE_NAME, versionString);

		vstatus = sme_get_wcnss_hardware_version(hdd_ctx->hHal,
							 versionString,
							 sizeof(versionString));
		if (!QDF_IS_STATUS_SUCCESS(vstatus)) {
			hdd_alert("unable to retrieve WCNSS hardware version string");
			break;
		}

		pr_info("%s: WCNSS hardware version %s\n",
			WLAN_MODULE_NAME, versionString);

		/*
		 * 1.Check if FW version is greater than 0.1.1.0. Only then
		 * send host-FW capability exchange message
		 * 2.Host-FW capability exchange message  is only present on
		 * target 1.1 so send the message only if it the target is 1.1
		 * minor numbers for different target branches:
		 * 0 -> (1.0)Mainline Build
		 * 1 -> (1.1)Mainline Build
		 * 2->(1.04) Stability Build
		 */
		if (((versionReported.major > 0) || (versionReported.minor > 1)
		     || ((versionReported.minor >= 1)
			 && (versionReported.version >= 1)))
		    && ((versionReported.major == 1)
			&& (versionReported.minor >= 1)))
			fwFeatCapsMsgSupported = 1;

		if (fwFeatCapsMsgSupported) {
			/*
			 * Indicate if IBSS heartbeat monitoring needs to be
			 * offloaded
			 */
			if (!hdd_ctx->config->enableIbssHeartBeatOffload) {
				sme_disable_feature_capablity
					(IBSS_HEARTBEAT_OFFLOAD);
			}

			sme_feature_caps_exchange(hdd_ctx->hHal);
		}

	} while (0);

}

/* Initialize channel list in sme based on the country code */
QDF_STATUS hdd_set_sme_chan_list(hdd_context_t *hdd_ctx)
{
	return sme_init_chan_list(hdd_ctx->hHal, hdd_ctx->reg.alpha2,
				  hdd_ctx->reg.cc_src);
}

/**
 * hdd_is_5g_supported() - check if hardware supports 5GHz
 * @hdd_ctx:	Pointer to the hdd context
 *
 * HDD function to know if hardware supports 5GHz
 *
 * Return:  true if hardware supports 5GHz
 */
bool hdd_is_5g_supported(hdd_context_t *hdd_ctx)
{
	if (!hdd_ctx || !hdd_ctx->config)
		return true;

	if (hdd_ctx->config->nBandCapability != eCSR_BAND_24)
		return true;
	else
		return false;
}

static int hdd_wiphy_init(hdd_context_t *hdd_ctx)
{
	struct wiphy *wiphy;
	int ret_val;

	wiphy = hdd_ctx->wiphy;

	/*
	 * The channel information in
	 * wiphy needs to be initialized before wiphy registration
	 */
	ret_val = hdd_regulatory_init(hdd_ctx, wiphy);
	if (ret_val) {
		hdd_alert("regulatory init failed");
		return ret_val;
	}

#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 11, 0))
	wiphy->wowlan = &wowlan_support_reg_init;
#else
	wiphy->wowlan.flags = WIPHY_WOWLAN_ANY |
			      WIPHY_WOWLAN_MAGIC_PKT |
			      WIPHY_WOWLAN_DISCONNECT |
			      WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
			      WIPHY_WOWLAN_GTK_REKEY_FAILURE |
			      WIPHY_WOWLAN_EAP_IDENTITY_REQ |
			      WIPHY_WOWLAN_4WAY_HANDSHAKE |
			      WIPHY_WOWLAN_RFKILL_RELEASE;

	wiphy->wowlan.n_patterns = (WOW_MAX_FILTER_LISTS *
				    WOW_MAX_FILTERS_PER_LIST);
	wiphy->wowlan.pattern_min_len = WOW_MIN_PATTERN_SIZE;
	wiphy->wowlan.pattern_max_len = WOW_MAX_PATTERN_SIZE;
#endif

	/* registration of wiphy dev with cfg80211 */
	ret_val = wlan_hdd_cfg80211_register(wiphy);
	if (0 > ret_val)
		hdd_err("wiphy registration failed");

	return ret_val;
}

/**
 * hdd_pld_request_bus_bandwidth() - Function to control bus bandwidth
 * @hdd_ctx - handle to hdd context
 * @tx_packets - transmit packet count
 * @rx_packets - receive packet count
 *
 * The function controls the bus bandwidth and dynamic control of
 * tcp delayed ack configuration
 *
 * Returns: None
 */
#ifdef MSM_PLATFORM
static void hdd_pld_request_bus_bandwidth(hdd_context_t *hdd_ctx,
					  const uint64_t tx_packets,
					  const uint64_t rx_packets)
{
	uint64_t total = tx_packets + rx_packets;
	uint64_t temp_rx = 0;
	uint64_t temp_tx = 0;
	enum pld_bus_width_type next_vote_level = PLD_BUS_WIDTH_NONE;
	enum wlan_tp_level next_rx_level = WLAN_SVC_TP_NONE;
	enum wlan_tp_level next_tx_level = WLAN_SVC_TP_NONE;
	uint32_t delack_timer_cnt = hdd_ctx->config->tcp_delack_timer_count;

	if (total > hdd_ctx->config->busBandwidthHighThreshold)
		next_vote_level = PLD_BUS_WIDTH_HIGH;
	else if (total > hdd_ctx->config->busBandwidthMediumThreshold)
		next_vote_level = PLD_BUS_WIDTH_MEDIUM;
	else if (total > hdd_ctx->config->busBandwidthLowThreshold)
		next_vote_level = PLD_BUS_WIDTH_LOW;
	else
		next_vote_level = PLD_BUS_WIDTH_NONE;

	hdd_ctx->hdd_txrx_hist[hdd_ctx->hdd_txrx_hist_idx].next_vote_level =
							next_vote_level;

	if (hdd_ctx->cur_vote_level != next_vote_level) {
		hdd_debug("trigger level %d, tx_packets: %lld, rx_packets: %lld",
			 next_vote_level, tx_packets, rx_packets);
		hdd_ctx->cur_vote_level = next_vote_level;
		pld_request_bus_bandwidth(hdd_ctx->parent_dev, next_vote_level);
		if (next_vote_level == PLD_BUS_WIDTH_LOW) {
			if (hdd_ctx->hbw_requested) {
				pld_remove_pm_qos(hdd_ctx->parent_dev);
				hdd_ctx->hbw_requested = false;
			}
			if (cds_sched_handle_throughput_req(false))
				hdd_err("low bandwidth set rx affinity fail");
		 } else {
			if (!hdd_ctx->hbw_requested) {
				pld_request_pm_qos(hdd_ctx->parent_dev, 1);
				hdd_ctx->hbw_requested = true;
			}

			if (cds_sched_handle_throughput_req(true))
				hdd_err("high bandwidth set rx affinity fail");
		 }
		hdd_napi_apply_throughput_policy(hdd_ctx, tx_packets, rx_packets);
	}

	/* fine-tuning parameters for RX Flows */
	temp_rx = (rx_packets + hdd_ctx->prev_rx) / 2;

	hdd_ctx->prev_rx = rx_packets;
	if (temp_rx > hdd_ctx->config->tcpDelackThresholdHigh) {
		if ((hdd_ctx->cur_rx_level != WLAN_SVC_TP_HIGH) &&
		   (++hdd_ctx->rx_high_ind_cnt == delack_timer_cnt)) {
			next_rx_level = WLAN_SVC_TP_HIGH;
		}
	} else {
		next_rx_level = WLAN_SVC_TP_LOW;
		hdd_ctx->rx_high_ind_cnt = 0;
	}

	hdd_ctx->hdd_txrx_hist[hdd_ctx->hdd_txrx_hist_idx].next_rx_level =
								next_rx_level;

	if (hdd_ctx->cur_rx_level != next_rx_level) {
		hdd_debug("TCP DELACK trigger level %d, average_rx: %llu",
		       next_rx_level, temp_rx);
		hdd_ctx->cur_rx_level = next_rx_level;
		/* Send throughput indication only if it is enabled.
		 * Disabling tcp_del_ack will revert the tcp stack behavior
		 * to default delayed ack. Note that this will disable the
		 * dynamic delayed ack mechanism across the system
		 */
		if (hdd_ctx->config->enable_tcp_delack)
			wlan_hdd_send_svc_nlink_msg(hdd_ctx->radio_index,
					WLAN_SVC_WLAN_TP_IND,
					    &next_rx_level,
					    sizeof(next_rx_level));
	}

	/* fine-tuning parameters for TX Flows */
	temp_tx = (tx_packets + hdd_ctx->prev_tx) / 2;
	hdd_ctx->prev_tx = tx_packets;
	if (temp_tx > hdd_ctx->config->tcp_tx_high_tput_thres)
		next_tx_level = WLAN_SVC_TP_HIGH;
	else
		next_tx_level = WLAN_SVC_TP_LOW;

	 if (hdd_ctx->cur_tx_level != next_tx_level) {
		hdd_debug("change TCP TX trigger level %d, average_tx: %llu",
				next_tx_level, temp_tx);
		hdd_ctx->cur_tx_level = next_tx_level;
		wlan_hdd_send_svc_nlink_msg(hdd_ctx->radio_index,
				WLAN_SVC_WLAN_TP_TX_IND,
				&next_tx_level,
				sizeof(next_tx_level));
	}

	hdd_ctx->hdd_txrx_hist[hdd_ctx->hdd_txrx_hist_idx].next_tx_level =
								next_tx_level;
	hdd_ctx->hdd_txrx_hist_idx++;
	hdd_ctx->hdd_txrx_hist_idx &= NUM_TX_RX_HISTOGRAM_MASK;
}

#define HDD_BW_GET_DIFF(_x, _y) (unsigned long)((ULONG_MAX - (_y)) + (_x) + 1)
static void hdd_bus_bw_work_handler(struct work_struct *work)
{
	hdd_context_t *hdd_ctx = container_of(work, hdd_context_t,
					bus_bw_work);
	hdd_adapter_t *adapter = NULL;
	uint64_t tx_packets = 0, rx_packets = 0;
	uint64_t fwd_tx_packets = 0, fwd_rx_packets = 0;
	uint64_t fwd_tx_packets_diff = 0, fwd_rx_packets_diff = 0;
	uint64_t total_tx = 0, total_rx = 0;
	hdd_adapter_list_node_t *adapterNode = NULL;
	QDF_STATUS status = 0;
	A_STATUS ret;
	bool connected = false;
	uint32_t ipa_tx_packets = 0, ipa_rx_packets = 0;

	if (wlan_hdd_validate_context(hdd_ctx))
		return;

	for (status = hdd_get_front_adapter(hdd_ctx, &adapterNode);
	     NULL != adapterNode && QDF_STATUS_SUCCESS == status;
	     status =
		     hdd_get_next_adapter(hdd_ctx, adapterNode, &adapterNode)) {

		if (adapterNode->pAdapter == NULL)
			continue;
		adapter = adapterNode->pAdapter;
		/*
		 * Validate magic so we don't end up accessing
		 * an invalid adapter.
		 */
		if (adapter->magic != WLAN_HDD_ADAPTER_MAGIC)
			continue;

		if ((adapter->device_mode == QDF_STA_MODE ||
		     adapter->device_mode == QDF_P2P_CLIENT_MODE) &&
		    WLAN_HDD_GET_STATION_CTX_PTR(adapter)->conn_info.connState
		    != eConnectionState_Associated) {

			continue;
		}

		if ((adapter->device_mode == QDF_SAP_MODE ||
		     adapter->device_mode == QDF_P2P_GO_MODE) &&
		    WLAN_HDD_GET_AP_CTX_PTR(adapter)->bApActive == false) {

			continue;
		}

		tx_packets += HDD_BW_GET_DIFF(adapter->stats.tx_packets,
					      adapter->prev_tx_packets);
		rx_packets += HDD_BW_GET_DIFF(adapter->stats.rx_packets,
					      adapter->prev_rx_packets);

		if (adapter->device_mode == QDF_SAP_MODE ||
				adapter->device_mode == QDF_P2P_GO_MODE ||
				adapter->device_mode == QDF_IBSS_MODE) {

			ret = ol_get_intra_bss_fwd_pkts_count(
				adapter->sessionId,
				&fwd_tx_packets, &fwd_rx_packets);
			if (ret == A_OK) {
				fwd_tx_packets_diff += HDD_BW_GET_DIFF(
					fwd_tx_packets,
					adapter->prev_fwd_tx_packets);
				fwd_rx_packets_diff += HDD_BW_GET_DIFF(
					fwd_tx_packets,
					adapter->prev_fwd_rx_packets);
			}
		}

		total_rx += adapter->stats.rx_packets;
		total_tx += adapter->stats.tx_packets;

		spin_lock_bh(&hdd_ctx->bus_bw_lock);
		adapter->prev_tx_packets = adapter->stats.tx_packets;
		adapter->prev_rx_packets = adapter->stats.rx_packets;
		adapter->prev_fwd_tx_packets = fwd_tx_packets;
		adapter->prev_fwd_rx_packets = fwd_rx_packets;
		spin_unlock_bh(&hdd_ctx->bus_bw_lock);
		connected = true;
	}

	hdd_ctx->hdd_txrx_hist[hdd_ctx->hdd_txrx_hist_idx].total_rx = total_rx;
	hdd_ctx->hdd_txrx_hist[hdd_ctx->hdd_txrx_hist_idx].total_tx = total_tx;
	hdd_ctx->hdd_txrx_hist[hdd_ctx->hdd_txrx_hist_idx].interval_rx =
								rx_packets;
	hdd_ctx->hdd_txrx_hist[hdd_ctx->hdd_txrx_hist_idx].interval_tx =
								tx_packets;

	/* add intra bss forwarded tx and rx packets */
	tx_packets += fwd_tx_packets_diff;
	rx_packets += fwd_rx_packets_diff;

	hdd_ipa_uc_stat_query(hdd_ctx, &ipa_tx_packets, &ipa_rx_packets);
	tx_packets += (uint64_t)ipa_tx_packets;
	rx_packets += (uint64_t)ipa_rx_packets;

	if (!connected) {
		hdd_err("bus bandwidth timer running in disconnected state");
		return;
	}

	hdd_pld_request_bus_bandwidth(hdd_ctx, tx_packets, rx_packets);

	hdd_ipa_set_perf_level(hdd_ctx, tx_packets, rx_packets);
	hdd_ipa_uc_stat_request(adapter, 2);

	qdf_timer_start(&hdd_ctx->bus_bw_timer,
			   hdd_ctx->config->busBandwidthComputeInterval);
}

/**
 * __hdd_bus_bw_cbk() - Bus bandwidth data structure callback.
 * @arg: Argument of timer function
 *
 * Schedule a workqueue in this function where all the processing is done.
 *
 * Return: None.
 */
static void __hdd_bus_bw_cbk(void *arg)
{
	hdd_context_t *hdd_ctx = (hdd_context_t *) arg;

	if (wlan_hdd_validate_context(hdd_ctx))
		return;

	schedule_work(&hdd_ctx->bus_bw_work);
}

/**
 * hdd_bus_bw_cbk() - Wrapper for bus bw callback for SSR protection.
 * @arg: Argument of timer function
 *
 * Return: None.
 */
static void hdd_bus_bw_cbk(void *arg)
{
	cds_ssr_protect(__func__);
	__hdd_bus_bw_cbk(arg);
	cds_ssr_unprotect(__func__);
}

int hdd_bus_bandwidth_init(hdd_context_t *hdd_ctx)
{
	spin_lock_init(&hdd_ctx->bus_bw_lock);
	INIT_WORK(&hdd_ctx->bus_bw_work,
			hdd_bus_bw_work_handler);
	qdf_timer_init(NULL,
		 &hdd_ctx->bus_bw_timer,
		 hdd_bus_bw_cbk, (void *)hdd_ctx,
		 QDF_TIMER_TYPE_SW);

	return 0;
}

void hdd_bus_bandwidth_destroy(hdd_context_t *hdd_ctx)
{
	if (hdd_ctx->bus_bw_timer_started)
		hdd_reset_tcp_delack(hdd_ctx);

	hdd_info("wait for bus bw work to flush");
	cancel_work_sync(&hdd_ctx->bus_bw_work);
	qdf_timer_free(&hdd_ctx->bus_bw_timer);
}
#endif

/**
 * wlan_hdd_init_tx_rx_histogram() - init tx/rx histogram stats
 * @hdd_ctx: hdd context
 *
 * Return: 0 for success or error code
 */
static int wlan_hdd_init_tx_rx_histogram(hdd_context_t *hdd_ctx)
{
	hdd_ctx->hdd_txrx_hist = qdf_mem_malloc(
		(sizeof(struct hdd_tx_rx_histogram) * NUM_TX_RX_HISTOGRAM));
	if (hdd_ctx->hdd_txrx_hist == NULL) {
		hdd_err("Failed malloc for hdd_txrx_hist");
		return -ENOMEM;
	}
	return 0;
}

/**
 * wlan_hdd_deinit_tx_rx_histogram() - deinit tx/rx histogram stats
 * @hdd_ctx: hdd context
 *
 * Return: none
 */
void wlan_hdd_deinit_tx_rx_histogram(hdd_context_t *hdd_ctx)
{
	if (hdd_ctx->hdd_txrx_hist) {
		qdf_mem_free(hdd_ctx->hdd_txrx_hist);
		hdd_ctx->hdd_txrx_hist = NULL;
	}
}

static uint8_t *convert_level_to_string(uint32_t level)
{
	switch (level) {
	/* initialize the wlan sub system */
	case WLAN_SVC_TP_NONE:
		return "NONE";
	case WLAN_SVC_TP_LOW:
		return "LOW";
	case WLAN_SVC_TP_MEDIUM:
		return "MED";
	case WLAN_SVC_TP_HIGH:
		return "HIGH";
	default:
		return "INVAL";
	}
}


/**
 * wlan_hdd_display_tx_rx_histogram() - display tx rx histogram
 * @hdd_ctx: hdd context
 *
 * Return: none
 */
void wlan_hdd_display_tx_rx_histogram(hdd_context_t *hdd_ctx)
{
	int i;

#ifdef MSM_PLATFORM
	hdd_err("BW compute Interval: %dms",
		hdd_ctx->config->busBandwidthComputeInterval);
	hdd_err("BW High TH: %d BW Med TH: %d BW Low TH: %d",
		hdd_ctx->config->busBandwidthHighThreshold,
		hdd_ctx->config->busBandwidthMediumThreshold,
		hdd_ctx->config->busBandwidthLowThreshold);
	hdd_err("Enable TCP DEL ACK: %d",
		hdd_ctx->config->enable_tcp_delack);
	hdd_err("TCP DEL High TH: %d TCP DEL Low TH: %d",
		hdd_ctx->config->tcpDelackThresholdHigh,
		hdd_ctx->config->tcpDelackThresholdLow);
	hdd_err("TCP TX HIGH TP TH: %d (Use to set tcp_output_bytes_limit)",
		hdd_ctx->config->tcp_tx_high_tput_thres);
#endif

	hdd_err("Total entries: %d Current index: %d",
		NUM_TX_RX_HISTOGRAM, hdd_ctx->hdd_txrx_hist_idx);

	hdd_err("index, total_rx, interval_rx, total_tx, interval_tx, bus_bw_level, RX TP Level, TX TP Level");

	for (i = 0; i < NUM_TX_RX_HISTOGRAM; i++) {
		hdd_err("%d: %llu, %llu, %llu, %llu, %s, %s, %s",
			i, hdd_ctx->hdd_txrx_hist[i].total_rx,
			hdd_ctx->hdd_txrx_hist[i].interval_rx,
			hdd_ctx->hdd_txrx_hist[i].total_tx,
			hdd_ctx->hdd_txrx_hist[i].interval_tx,
			convert_level_to_string(
				hdd_ctx->hdd_txrx_hist[i].next_vote_level),
			convert_level_to_string(
				hdd_ctx->hdd_txrx_hist[i].next_rx_level),
			convert_level_to_string(
				hdd_ctx->hdd_txrx_hist[i].next_tx_level));
	}
	return;
}

/**
 * wlan_hdd_clear_tx_rx_histogram() - clear tx rx histogram
 * @hdd_ctx: hdd context
 *
 * Return: none
 */
void wlan_hdd_clear_tx_rx_histogram(hdd_context_t *hdd_ctx)
{
	hdd_ctx->hdd_txrx_hist_idx = 0;
	qdf_mem_zero(hdd_ctx->hdd_txrx_hist,
		(sizeof(struct hdd_tx_rx_histogram) * NUM_TX_RX_HISTOGRAM));
}

/**
 * wlan_hdd_display_netif_queue_history() - display netif queue operation history
 * @pHddCtx: hdd context
 *
 * Return: none
 */
void wlan_hdd_display_netif_queue_history(hdd_context_t *hdd_ctx)
{

	hdd_adapter_t *adapter = NULL;
	hdd_adapter_list_node_t *adapter_node = NULL, *next = NULL;
	QDF_STATUS status;
	int i;
	qdf_time_t total, pause, unpause, curr_time, delta;

	status = hdd_get_front_adapter(hdd_ctx, &adapter_node);
	while (NULL != adapter_node && QDF_STATUS_SUCCESS == status) {
		adapter = adapter_node->pAdapter;

		hdd_err("\nNetif queue operation statistics:");
		hdd_err("Session_id %d device mode %d",
			adapter->sessionId, adapter->device_mode);
		hdd_err("Current pause_map value %x", adapter->pause_map);
		curr_time = qdf_system_ticks();
		total = curr_time - adapter->start_time;
		delta = curr_time - adapter->last_time;
		if (adapter->pause_map) {
			pause = adapter->total_pause_time + delta;
			unpause = adapter->total_unpause_time;
		} else {
			unpause = adapter->total_unpause_time + delta;
			pause = adapter->total_pause_time;
		}
		hdd_err("Total: %ums Pause: %ums Unpause: %ums",
			qdf_system_ticks_to_msecs(total),
			qdf_system_ticks_to_msecs(pause),
			qdf_system_ticks_to_msecs(unpause));
		hdd_err("reason_type: pause_cnt: unpause_cnt: pause_time");

		for (i = WLAN_CONTROL_PATH; i < WLAN_REASON_TYPE_MAX; i++) {
			qdf_time_t pause_delta = 0;

			if (adapter->pause_map & (1 << i))
				pause_delta = delta;

			hdd_err("%s: %d: %d: %ums",
				hdd_reason_type_to_string(i),
				adapter->queue_oper_stats[i].pause_count,
				adapter->queue_oper_stats[i].unpause_count,
				qdf_system_ticks_to_msecs(
				adapter->queue_oper_stats[i].total_pause_time +
				pause_delta));
		}

		hdd_err("\nNetif queue operation history:");
		hdd_err("Total entries: %d current index %d",
			WLAN_HDD_MAX_HISTORY_ENTRY, adapter->history_index);

		hdd_err("index: time: action_type: reason_type: pause_map");

		for (i = 0; i < WLAN_HDD_MAX_HISTORY_ENTRY; i++) {
			hdd_err("%d: %u: %s: %s: %x",
				i, qdf_system_ticks_to_msecs(
					adapter->queue_oper_history[i].time),
				hdd_action_type_to_string(
				adapter->queue_oper_history[i].netif_action),
				hdd_reason_type_to_string(
				adapter->queue_oper_history[i].netif_reason),
				adapter->queue_oper_history[i].pause_map);
		}

		status = hdd_get_next_adapter(hdd_ctx, adapter_node, &next);
		adapter_node = next;
	}


}

/**
 * wlan_hdd_clear_netif_queue_history() - clear netif queue operation history
 * @hdd_ctx: hdd context
 *
 * Return: none
 */
void wlan_hdd_clear_netif_queue_history(hdd_context_t *hdd_ctx)
{
	hdd_adapter_t *adapter = NULL;
	hdd_adapter_list_node_t *adapter_node = NULL, *next = NULL;
	QDF_STATUS status;

	status = hdd_get_front_adapter(hdd_ctx, &adapter_node);
	while (NULL != adapter_node && QDF_STATUS_SUCCESS == status) {
		adapter = adapter_node->pAdapter;

		qdf_mem_zero(adapter->queue_oper_stats,
					sizeof(adapter->queue_oper_stats));
		qdf_mem_zero(adapter->queue_oper_history,
					sizeof(adapter->queue_oper_history));
		adapter->history_index = 0;
		adapter->start_time = adapter->last_time = qdf_system_ticks();
		adapter->total_pause_time = 0;
		adapter->total_unpause_time = 0;
		status = hdd_get_next_adapter(hdd_ctx, adapter_node, &next);
		adapter_node = next;
	}
}

/**
 * hdd_11d_scan_done() - callback for 11d scan completion of flushing results
 * @halHandle:	Hal handle
 * @pContext:	Pointer to the context
 * @sessionId:	Session ID
 * @scanId:	Scan ID
 * @status:	Status
 *
 * This is the callback to be executed when 11d scan is completed to flush out
 * the scan results
 *
 * 11d scan is done during driver load and is a passive scan on all
 * channels supported by the device, 11d scans may find some APs on
 * frequencies which are forbidden to be used in the regulatory domain
 * the device is operating in. If these APs are notified to the supplicant
 * it may try to connect to these APs, thus flush out all the scan results
 * which are present in SME after 11d scan is done.
 *
 * Return:  QDF_STATUS_SUCCESS
 */
static QDF_STATUS hdd_11d_scan_done(tHalHandle halHandle, void *pContext,
				    uint8_t sessionId, uint32_t scanId,
				    eCsrScanStatus status)
{
	ENTER();

	sme_scan_flush_result(halHandle);

	EXIT();

	return QDF_STATUS_SUCCESS;
}

#ifdef WLAN_FEATURE_OFFLOAD_PACKETS
/**
 * hdd_init_offloaded_packets_ctx() - Initialize offload packets context
 * @hdd_ctx: hdd global context
 *
 * Return: none
 */
static void hdd_init_offloaded_packets_ctx(hdd_context_t *hdd_ctx)
{
	uint8_t i;

	mutex_init(&hdd_ctx->op_ctx.op_lock);
	for (i = 0; i < MAXNUM_PERIODIC_TX_PTRNS; i++) {
		hdd_ctx->op_ctx.op_table[i].request_id = MAX_REQUEST_ID;
		hdd_ctx->op_ctx.op_table[i].pattern_id = i;
	}
}
#else
static void hdd_init_offloaded_packets_ctx(hdd_context_t *hdd_ctx)
{
}
#endif

#ifdef WLAN_FEATURE_WOW_PULSE
/**
 * wlan_hdd_set_wow_pulse() - call SME to send wmi cmd of wow pulse
 * @phddctx: hdd_context_t structure pointer
 * @enable: enable or disable this behaviour
 *
 * Return: int
 */
static int wlan_hdd_set_wow_pulse(hdd_context_t *phddctx, bool enable)
{
	struct hdd_config *pcfg_ini = phddctx->config;
	struct wow_pulse_mode wow_pulse_set_info;
	QDF_STATUS status;

	hdd_notice("wow pulse enable flag is %d", enable);

	if (false == phddctx->config->wow_pulse_support)
		return 0;

	/* prepare the request to send to SME */
	if (enable == true) {
		wow_pulse_set_info.wow_pulse_enable = true;
		wow_pulse_set_info.wow_pulse_pin =
				pcfg_ini->wow_pulse_pin;
		wow_pulse_set_info.wow_pulse_interval_low =
				pcfg_ini->wow_pulse_interval_low;
		wow_pulse_set_info.wow_pulse_interval_high =
				pcfg_ini->wow_pulse_interval_high;
	} else {
		wow_pulse_set_info.wow_pulse_enable = false;
		wow_pulse_set_info.wow_pulse_pin = 0;
		wow_pulse_set_info.wow_pulse_interval_low = 0;
		wow_pulse_set_info.wow_pulse_interval_high = 0;
	}
	hdd_notice("enable %d pin %d low %d high %d",
		wow_pulse_set_info.wow_pulse_enable,
		wow_pulse_set_info.wow_pulse_pin,
		wow_pulse_set_info.wow_pulse_interval_low,
		wow_pulse_set_info.wow_pulse_interval_high);

	status = sme_set_wow_pulse(&wow_pulse_set_info);
	if (QDF_STATUS_E_FAILURE == status) {
		hdd_notice("sme_set_wow_pulse failure!");
		return -EIO;
	}
	hdd_notice("sme_set_wow_pulse success!");
	return 0;
}
#else
static inline int wlan_hdd_set_wow_pulse(hdd_context_t *phddctx, bool enable)
{
	return 0;
}
#endif

#ifdef WLAN_FEATURE_FASTPATH
/**
 * hdd_enable_fastpath() - Enable fastpath if enabled in config INI
 * @hdd_cfg: hdd config
 * @context: lower layer context
 *
 * Return: none
 */
void hdd_enable_fastpath(struct hdd_config *hdd_cfg,
				void *context)
{
	if (hdd_cfg->fastpath_enable)
		hif_enable_fastpath(context);
}
#endif

#if defined(FEATURE_WLAN_CH_AVOID)
/**
 * hdd_set_thermal_level_cb() - set thermal level callback function
 * @context:	hdd context pointer
 * @level:	thermal level
 *
 * Change IPA data path to SW path when the thermal throttle level greater
 * than 0, and restore the original data path when throttle level is 0
 *
 * Return: none
 */
static void hdd_set_thermal_level_cb(void *context, u_int8_t level)
{
	hdd_context_t *hdd_ctx = context;

	/* Change IPA to SW path when throttle level greater than 0 */
	if (level > THROTTLE_LEVEL_0)
		hdd_ipa_send_mcc_scc_msg(hdd_ctx, true);
	else
		/* restore original concurrency mode */
		hdd_ipa_send_mcc_scc_msg(hdd_ctx, hdd_ctx->mcc_mode);
}

/**
 * hdd_get_safe_channel_from_pcl_and_acs_range() - Get safe channel for SAP
 * restart
 * @adapter: AP adapter, which should be checked for NULL
 *
 * Get a safe channel to restart SAP. PCL already takes into account the
 * unsafe channels. So, the PCL is validated with the ACS range to provide
 * a safe channel for the SAP to restart.
 *
 * Return: Channel number to restart SAP in case of success. In case of any
 * failure, the channel number returned is zero.
 */
static uint8_t hdd_get_safe_channel_from_pcl_and_acs_range(
				hdd_adapter_t *adapter)
{
	struct sir_pcl_list pcl;
	QDF_STATUS status;
	uint32_t i, j;
	tHalHandle *hal_handle;
	hdd_context_t *hdd_ctx;
	bool found = false;

	hdd_ctx = WLAN_HDD_GET_CTX(adapter);
	if (!hdd_ctx) {
		hdd_err("invalid HDD context");
		return INVALID_CHANNEL_ID;
	}

	hal_handle = WLAN_HDD_GET_HAL_CTX(adapter);
	if (!hal_handle) {
		hdd_err("invalid HAL handle");
		return INVALID_CHANNEL_ID;
	}

	status = cds_get_pcl_for_existing_conn(CDS_SAP_MODE,
			pcl.pcl_list, &pcl.pcl_len,
			pcl.weight_list, QDF_ARRAY_SIZE(pcl.weight_list));
	if (QDF_IS_STATUS_ERROR(status)) {
		hdd_err("Get PCL failed");
		return INVALID_CHANNEL_ID;
	}

	if (!pcl.pcl_len) {
		hdd_alert("pcl length is zero. this is not expected");
		return INVALID_CHANNEL_ID;
	}

	hdd_info("start:%d end:%d",
		adapter->sessionCtx.ap.sapConfig.acs_cfg.start_ch,
		adapter->sessionCtx.ap.sapConfig.acs_cfg.end_ch);

	/* PCL already takes unsafe channel into account */
	for (i = 0; i < pcl.pcl_len; i++) {
		hdd_info("chan[%d]:%d", i, pcl.pcl_list[i]);
		if ((pcl.pcl_list[i] >=
		   adapter->sessionCtx.ap.sapConfig.acs_cfg.start_ch) &&
		   (pcl.pcl_list[i] <=
		   adapter->sessionCtx.ap.sapConfig.acs_cfg.end_ch)) {
			hdd_info("found PCL safe chan:%d", pcl.pcl_list[i]);
			return pcl.pcl_list[i];
		}
	}

	hdd_info("no safe channel from PCL found in ACS range");

	/* Try for safe channel from all valid channel */
	pcl.pcl_len = MAX_NUM_CHAN;
	status = sme_get_cfg_valid_channels(hal_handle, pcl.pcl_list,
					&pcl.pcl_len);
	if (QDF_IS_STATUS_ERROR(status)) {
		hdd_err("error in getting valid channel list");
		return INVALID_CHANNEL_ID;
	}

	for (i = 0; i < pcl.pcl_len; i++) {
		hdd_info("chan[%d]:%d", i, pcl.pcl_list[i]);
		found = false;
		for (j = 0; j < hdd_ctx->unsafe_channel_count; j++) {
			if (pcl.pcl_list[i] ==
					hdd_ctx->unsafe_channel_list[j]) {
				hdd_info("unsafe chan:%d", pcl.pcl_list[i]);
				found = true;
				break;
			}
		}

		if (found)
			continue;

		if ((pcl.pcl_list[i] >=
		   adapter->sessionCtx.ap.sapConfig.acs_cfg.start_ch) &&
		   (pcl.pcl_list[i] <=
		   adapter->sessionCtx.ap.sapConfig.acs_cfg.end_ch)) {
			hdd_info("found safe chan:%d", pcl.pcl_list[i]);
			return pcl.pcl_list[i];
		}
	}

	return INVALID_CHANNEL_ID;
}

/**
 * hdd_restart_sap() - Restarts SAP on the given channel
 * @adapter: AP adapter
 * @channel: Channel
 *
 * Restarts the SAP interface by invoking the function which executes the
 * callback to perform channel switch using (E)CSA.
 *
 * Return: None
 */
static void hdd_restart_sap(hdd_adapter_t *adapter, uint8_t channel)
{
	hdd_ap_ctx_t *hdd_ap_ctx;
	tHalHandle *hal_handle;

	if (!adapter) {
		hdd_err("invalid adapter");
		return;
	}

	hdd_ap_ctx = WLAN_HDD_GET_AP_CTX_PTR(adapter);

	hal_handle = WLAN_HDD_GET_HAL_CTX(adapter);
	if (!hal_handle) {
		hdd_err("invalid HAL handle");
		return;
	}

	hdd_ap_ctx->sapConfig.channel = channel;
	hdd_ap_ctx->sapConfig.ch_params.ch_width =
		hdd_ap_ctx->sapConfig.ch_width_orig;

	hdd_info("chan:%d width:%d",
		channel, hdd_ap_ctx->sapConfig.ch_width_orig);

	cds_set_channel_params(hdd_ap_ctx->sapConfig.channel,
			hdd_ap_ctx->sapConfig.sec_ch,
			&hdd_ap_ctx->sapConfig.ch_params);

	cds_change_sap_channel_with_csa(adapter, hdd_ap_ctx);
}
/**
 * hdd_unsafe_channel_restart_sap() - restart sap if sap is on unsafe channel
 * @hdd_ctx: hdd context pointer
 *
 * hdd_unsafe_channel_restart_sap check all unsafe channel list
 * and if ACS is enabled, driver will ask userspace to restart the
 * sap. User space on LTE coex indication restart driver.
 *
 * Return - none
 */
void hdd_unsafe_channel_restart_sap(hdd_context_t *hdd_ctxt)
{
	QDF_STATUS status;
	hdd_adapter_list_node_t *adapter_node = NULL, *next = NULL;
	hdd_adapter_t *adapter_temp;
	uint32_t i;
	bool found = false;
	uint8_t restart_chan;

	status = hdd_get_front_adapter(hdd_ctxt, &adapter_node);
	while (NULL != adapter_node && QDF_STATUS_SUCCESS == status) {
		adapter_temp = adapter_node->pAdapter;

		if (!adapter_temp) {
			hdd_err("adapter is NULL, moving to next one");
			goto next_adapater;
		}

		if (!((adapter_temp->device_mode == QDF_SAP_MODE) &&
		   (adapter_temp->sessionCtx.ap.sapConfig.acs_cfg.acs_mode))) {
			hdd_info("skip device mode:%d acs:%d",
				adapter_temp->device_mode,
				adapter_temp->sessionCtx.ap.sapConfig.
				acs_cfg.acs_mode);
			goto next_adapater;
		}

		found = false;
		for (i = 0; i < hdd_ctxt->unsafe_channel_count; i++) {
			if (adapter_temp->sessionCtx.ap.operatingChannel ==
				hdd_ctxt->unsafe_channel_list[i]) {
				found = true;
				hdd_info("operating ch:%d is unsafe",
				  adapter_temp->sessionCtx.ap.operatingChannel);
				break;
			}
		}

		if (!found) {
			hdd_info("ch:%d is safe. no need to change channel",
				adapter_temp->sessionCtx.ap.operatingChannel);
			goto next_adapater;
		}

		restart_chan =
			hdd_get_safe_channel_from_pcl_and_acs_range(
					adapter_temp);
		if (!restart_chan) {
			hdd_alert("fail to restart SAP");
		} else {
			/*
			 * SAP restart due to unsafe channel. While
			 * restarting the SAP, make sure to clear
			 * acs_channel, channel to reset to
			 * 0. Otherwise these settings will override
			 * the ACS while restart.
			 */
			hdd_ctxt->acs_policy.acs_channel = AUTO_CHANNEL_SELECT;
			adapter_temp->sessionCtx.ap.sapConfig.channel =
							AUTO_CHANNEL_SELECT;
			hdd_info("sending coex indication");
			wlan_hdd_send_svc_nlink_msg(hdd_ctxt->radio_index,
					WLAN_SVC_LTE_COEX_IND, NULL, 0);
			hdd_restart_sap(adapter_temp, restart_chan);
		}

next_adapater:
		status = hdd_get_next_adapter(hdd_ctxt, adapter_node, &next);
		adapter_node = next;
	}
}
/**
 * hdd_ch_avoid_cb() - Avoid notified channels from FW handler
 * @adapter:	HDD adapter pointer
 * @indParam:	Channel avoid notification parameter
 *
 * Avoid channel notification from FW handler.
 * FW will send un-safe channel list to avoid over wrapping.
 * hostapd should not use notified channel
 *
 * Return: None
 */
void hdd_ch_avoid_cb(void *hdd_context, void *indi_param)
{
	hdd_context_t *hdd_ctxt;
	tSirChAvoidIndType *ch_avoid_indi;
	uint8_t range_loop;
	enum channel_enum channel_loop, start_channel_idx = INVALID_CHANNEL,
					end_channel_idx = INVALID_CHANNEL;
	uint16_t start_channel;
	uint16_t end_channel;
	v_CONTEXT_t cds_context;
	tHddAvoidFreqList hdd_avoid_freq_list;
	uint32_t i;

	/* Basic sanity */
	if (!hdd_context || !indi_param) {
		hdd_err("Invalid arguments");
		return;
	}

	hdd_ctxt = (hdd_context_t *) hdd_context;
	ch_avoid_indi = (tSirChAvoidIndType *) indi_param;
	cds_context = hdd_ctxt->pcds_context;

	/* Make unsafe channel list */
	hdd_notice("band count %d",
	       ch_avoid_indi->avoid_range_count);

	/* generate vendor specific event */
	qdf_mem_zero((void *)&hdd_avoid_freq_list, sizeof(tHddAvoidFreqList));
	for (i = 0; i < ch_avoid_indi->avoid_range_count; i++) {
		hdd_avoid_freq_list.avoidFreqRange[i].startFreq =
			ch_avoid_indi->avoid_freq_range[i].start_freq;
		hdd_avoid_freq_list.avoidFreqRange[i].endFreq =
			ch_avoid_indi->avoid_freq_range[i].end_freq;
	}
	hdd_avoid_freq_list.avoidFreqRangeCount =
		ch_avoid_indi->avoid_range_count;

	/* clear existing unsafe channel cache */
	hdd_ctxt->unsafe_channel_count = 0;
	qdf_mem_zero(hdd_ctxt->unsafe_channel_list,
					sizeof(hdd_ctxt->unsafe_channel_list));

	for (range_loop = 0; range_loop < ch_avoid_indi->avoid_range_count;
								range_loop++) {
		if (hdd_ctxt->unsafe_channel_count >= NUM_CHANNELS) {
			hdd_warn("LTE Coex unsafe channel list full");
			break;
		}

		start_channel = ieee80211_frequency_to_channel(
			ch_avoid_indi->avoid_freq_range[range_loop].start_freq);
		end_channel   = ieee80211_frequency_to_channel(
			ch_avoid_indi->avoid_freq_range[range_loop].end_freq);
		hdd_notice("start %d : %d, end %d : %d",
			ch_avoid_indi->avoid_freq_range[range_loop].start_freq,
			start_channel,
			ch_avoid_indi->avoid_freq_range[range_loop].end_freq,
			end_channel);

		/* do not process frequency bands that are not mapped to
		 * predefined channels
		 */
		if (start_channel == 0 || end_channel == 0)
			continue;

		for (channel_loop = CHAN_ENUM_1; channel_loop <=
					CHAN_ENUM_184; channel_loop++) {
			if (CDS_CHANNEL_FREQ(channel_loop) >=
						ch_avoid_indi->avoid_freq_range[
						range_loop].start_freq) {
				start_channel_idx = channel_loop;
				break;
			}
		}
		for (channel_loop = CHAN_ENUM_1; channel_loop <=
					CHAN_ENUM_184; channel_loop++) {
			if (CDS_CHANNEL_FREQ(channel_loop) >=
						ch_avoid_indi->avoid_freq_range[
						range_loop].end_freq) {
				end_channel_idx = channel_loop;
				if (CDS_CHANNEL_FREQ(channel_loop) >
						ch_avoid_indi->avoid_freq_range[
						range_loop].end_freq)
					end_channel_idx--;
				break;
			}
		}

		if (start_channel_idx == INVALID_CHANNEL ||
					end_channel_idx == INVALID_CHANNEL)
			continue;

		for (channel_loop = start_channel_idx; channel_loop <=
					end_channel_idx; channel_loop++) {
			hdd_ctxt->unsafe_channel_list[
				hdd_ctxt->unsafe_channel_count++] =
				CDS_CHANNEL_NUM(channel_loop);
			if (hdd_ctxt->unsafe_channel_count >=
							NUM_CHANNELS) {
				hdd_warn("LTECoex unsafe ch list full");
				break;
			}
		}
	}

	hdd_notice("number of unsafe channels is %d ",
	       hdd_ctxt->unsafe_channel_count);

	if (pld_set_wlan_unsafe_channel(hdd_ctxt->parent_dev,
					hdd_ctxt->unsafe_channel_list,
				hdd_ctxt->unsafe_channel_count)) {
		hdd_err("Failed to set unsafe channel");

		/* clear existing unsafe channel cache */
		hdd_ctxt->unsafe_channel_count = 0;
		qdf_mem_zero(hdd_ctxt->unsafe_channel_list,
			sizeof(hdd_ctxt->unsafe_channel_list));

		return;
	}

	for (channel_loop = 0;
	     channel_loop < hdd_ctxt->unsafe_channel_count; channel_loop++) {
		hdd_notice("channel %d is not safe ",
		       hdd_ctxt->unsafe_channel_list[channel_loop]);
	}

	/*
	 * first update the unsafe channel list to the platform driver and
	 * send the avoid freq event to the application
	 */
	wlan_hdd_send_avoid_freq_event(hdd_ctxt, &hdd_avoid_freq_list);

	if (!hdd_ctxt->unsafe_channel_count) {
		hdd_info("no unsafe channels - not restarting SAP");
		return;
	}
	hdd_unsafe_channel_restart_sap(hdd_ctxt);
	return;
}

/**
 * hdd_init_channel_avoidance() - Initialize channel avoidance
 * @hdd_ctx:	HDD global context
 *
 * Initialize the channel avoidance logic by retrieving the unsafe
 * channel list from the platform driver and plumbing the data
 * down to the lower layers.  Then subscribe to subsequent channel
 * avoidance events.
 *
 * Return: None
 */
static void hdd_init_channel_avoidance(hdd_context_t *hdd_ctx)
{
	uint16_t unsafe_channel_count;
	int index;

	pld_get_wlan_unsafe_channel(hdd_ctx->parent_dev,
				    hdd_ctx->unsafe_channel_list,
				     &(hdd_ctx->unsafe_channel_count),
				     sizeof(uint16_t) * NUM_CHANNELS);

	hdd_notice("num of unsafe channels is %d",
	       hdd_ctx->unsafe_channel_count);

	unsafe_channel_count = QDF_MIN((uint16_t)hdd_ctx->unsafe_channel_count,
				       (uint16_t)NUM_CHANNELS);

	for (index = 0; index < unsafe_channel_count; index++) {
		hdd_notice("channel %d is not safe",
		       hdd_ctx->unsafe_channel_list[index]);

	}

	/* Plug in avoid channel notification callback */
	sme_add_ch_avoid_callback(hdd_ctx->hHal, hdd_ch_avoid_cb);
}
#else
static void hdd_init_channel_avoidance(hdd_context_t *hdd_ctx)
{
}
static void hdd_set_thermal_level_cb(void *context, u_int8_t level)
{
}
#endif /* defined(FEATURE_WLAN_CH_AVOID) */

/**
 * hdd_indicate_mgmt_frame() - Wrapper to indicate management frame to
 * user space
 * @frame_ind: Management frame data to be informed.
 *
 * This function is used to indicate management frame to
 * user space
 *
 * Return: None
 *
 */
void hdd_indicate_mgmt_frame(tSirSmeMgmtFrameInd *frame_ind)
{
	hdd_context_t *hdd_ctx = NULL;
	hdd_adapter_t *adapter = NULL;
	void *cds_context = NULL;
	int i;

	/* Get the global VOSS context.*/
	cds_context = cds_get_global_context();
	if (!cds_context) {
		hdd_err("Global CDS context is Null");
		return;
	}
	/* Get the HDD context.*/
	hdd_ctx = (hdd_context_t *)cds_get_context(QDF_MODULE_ID_HDD);

	if (0 != wlan_hdd_validate_context(hdd_ctx))
		return;

	if (SME_SESSION_ID_ANY == frame_ind->sessionId) {
		for (i = 0; i < CSR_ROAM_SESSION_MAX; i++) {
			adapter =
				hdd_get_adapter_by_sme_session_id(hdd_ctx, i);
			if (adapter)
				break;
		}
	} else {
		adapter = hdd_get_adapter_by_sme_session_id(hdd_ctx,
					frame_ind->sessionId);
	}

	if ((NULL != adapter) &&
		(WLAN_HDD_ADAPTER_MAGIC == adapter->magic))
		__hdd_indicate_mgmt_frame(adapter,
						frame_ind->frame_len,
						frame_ind->frameBuf,
						frame_ind->frameType,
						frame_ind->rxChan,
						frame_ind->rxRssi);
	return;
}

/**
 * wlan_hdd_disable_all_dual_mac_features() - Disable dual mac features
 * @hdd_ctx: HDD context
 *
 * Disables all the dual mac features like DBS, Agile DFS etc.
 *
 * Return: QDF_STATUS_SUCCESS on success
 */
static QDF_STATUS wlan_hdd_disable_all_dual_mac_features(hdd_context_t *hdd_ctx)
{
	struct sir_dual_mac_config cfg;
	QDF_STATUS status;

	if (!hdd_ctx) {
		hdd_err("HDD context is NULL");
		return QDF_STATUS_E_FAILURE;
	}

	cfg.scan_config = 0;
	cfg.fw_mode_config = 0;
	cfg.set_dual_mac_cb = cds_soc_set_dual_mac_cfg_cb;

	hdd_debug("Disabling all dual mac features...");

	status = sme_soc_set_dual_mac_config(hdd_ctx->hHal, cfg);
	if (status != QDF_STATUS_SUCCESS) {
		hdd_err("sme_soc_set_dual_mac_config failed %d", status);
		return status;
	}

	return QDF_STATUS_SUCCESS;
}

/**
 * hdd_override_ini_config - Override INI config
 * @hdd_ctx: HDD context
 *
 * Override INI config based on module parameter.
 *
 * Return: None
 */
static void hdd_override_ini_config(hdd_context_t *hdd_ctx)
{

	if (0 == enable_dfs_chan_scan || 1 == enable_dfs_chan_scan) {
		hdd_ctx->config->enableDFSChnlScan = enable_dfs_chan_scan;
		hdd_notice("Module enable_dfs_chan_scan set to %d",
			   enable_dfs_chan_scan);
	}
	if (0 == enable_11d || 1 == enable_11d) {
		hdd_ctx->config->Is11dSupportEnabled = enable_11d;
		hdd_notice("Module enable_11d set to %d", enable_11d);
	}

	if (!hdd_ipa_is_present(hdd_ctx))
		hdd_ctx->config->IpaConfig = 0;
}

/**
 * hdd_set_trace_level_for_each - Set trace level for each INI config
 * @hdd_ctx - HDD context
 *
 * Set trace level for each module based on INI config.
 *
 * Return: None
 */
static void hdd_set_trace_level_for_each(hdd_context_t *hdd_ctx)
{
	hdd_qdf_trace_enable(QDF_MODULE_ID_WMI,
			     hdd_ctx->config->qdf_trace_enable_wdi);
	hdd_qdf_trace_enable(QDF_MODULE_ID_HDD,
			     hdd_ctx->config->qdf_trace_enable_hdd);
	hdd_qdf_trace_enable(QDF_MODULE_ID_SME,
			     hdd_ctx->config->qdf_trace_enable_sme);
	hdd_qdf_trace_enable(QDF_MODULE_ID_PE,
			     hdd_ctx->config->qdf_trace_enable_pe);
	hdd_qdf_trace_enable(QDF_MODULE_ID_WMA,
			     hdd_ctx->config->qdf_trace_enable_wma);
	hdd_qdf_trace_enable(QDF_MODULE_ID_SYS,
			     hdd_ctx->config->qdf_trace_enable_sys);
	hdd_qdf_trace_enable(QDF_MODULE_ID_QDF,
			     hdd_ctx->config->qdf_trace_enable_qdf);
	hdd_qdf_trace_enable(QDF_MODULE_ID_SAP,
			     hdd_ctx->config->qdf_trace_enable_sap);
	hdd_qdf_trace_enable(QDF_MODULE_ID_HDD_SOFTAP,
			     hdd_ctx->config->qdf_trace_enable_hdd_sap);
	hdd_qdf_trace_enable(QDF_MODULE_ID_BMI,
				hdd_ctx->config->qdf_trace_enable_bmi);
	hdd_qdf_trace_enable(QDF_MODULE_ID_CFG,
				hdd_ctx->config->qdf_trace_enable_cfg);
	hdd_qdf_trace_enable(QDF_MODULE_ID_EPPING,
				hdd_ctx->config->qdf_trace_enable_epping);
	hdd_qdf_trace_enable(QDF_MODULE_ID_QDF_DEVICE,
				hdd_ctx->config->qdf_trace_enable_qdf_devices);
	hdd_qdf_trace_enable(QDF_MODULE_ID_TXRX,
				hdd_ctx->config->cfd_trace_enable_txrx);
	hdd_qdf_trace_enable(QDF_MODULE_ID_HTC,
				hdd_ctx->config->qdf_trace_enable_htc);
	hdd_qdf_trace_enable(QDF_MODULE_ID_HIF,
				hdd_ctx->config->qdf_trace_enable_hif);
	hdd_qdf_trace_enable(QDF_MODULE_ID_HDD_SAP_DATA,
				hdd_ctx->config->qdf_trace_enable_hdd_sap_data);
	hdd_qdf_trace_enable(QDF_MODULE_ID_HDD_DATA,
				hdd_ctx->config->qdf_trace_enable_hdd_data);

	hdd_cfg_print(hdd_ctx);
}

/**
 * hdd_context_init() - Initialize HDD context
 * @hdd_ctx:	HDD context.
 *
 * Initialize HDD context along with all the feature specific contexts.
 *
 * return: 0 on success and errno on failure.
 */
static int hdd_context_init(hdd_context_t *hdd_ctx)
{
	int ret;

	hdd_ctx->ioctl_scan_mode = eSIR_ACTIVE_SCAN;
	hdd_ctx->max_intf_count = CSR_ROAM_SESSION_MAX;

	hdd_init_ll_stats_ctx();

	init_completion(&hdd_ctx->mc_sus_event_var);
	init_completion(&hdd_ctx->ready_to_suspend);

	hdd_init_bpf_completion();

	qdf_spinlock_create(&hdd_ctx->connection_status_lock);
	qdf_spinlock_create(&hdd_ctx->sta_update_info_lock);
	qdf_spinlock_create(&hdd_ctx->hdd_adapter_lock);

	qdf_list_create(&hdd_ctx->hddAdapters, MAX_NUMBER_OF_ADAPTERS);

	init_completion(&hdd_ctx->set_antenna_mode_cmpl);

	ret = hdd_scan_context_init(hdd_ctx);
	if (ret)
		goto list_destroy;

	hdd_tdls_context_init(hdd_ctx);

	hdd_rx_wake_lock_create(hdd_ctx);

	ret = hdd_sap_context_init(hdd_ctx);
	if (ret)
		goto scan_destroy;

	ret = hdd_roc_context_init(hdd_ctx);
	if (ret)
		goto sap_destroy;

	wlan_hdd_cfg80211_extscan_init(hdd_ctx);

	hdd_init_offloaded_packets_ctx(hdd_ctx);

	ret = wlan_hdd_cfg80211_init(hdd_ctx->parent_dev, hdd_ctx->wiphy,
				     hdd_ctx->config);
	if (ret)
		goto roc_destroy;

	return 0;

roc_destroy:
	hdd_roc_context_destroy(hdd_ctx);

sap_destroy:
	hdd_sap_context_destroy(hdd_ctx);

scan_destroy:
	hdd_scan_context_destroy(hdd_ctx);
	hdd_rx_wake_lock_destroy(hdd_ctx);
	hdd_tdls_context_destroy(hdd_ctx);

list_destroy:
	qdf_list_destroy(&hdd_ctx->hddAdapters);
	return ret;
}

/**
 * hdd_context_create() - Allocate and inialize HDD context.
 * @dev:	Device Pointer to the underlying device
 *
 * Allocate and initialize HDD context. HDD context is allocated as part of
 * wiphy allocation and then context is initialized.
 *
 * Return: HDD context on success and ERR_PTR on failure
 */
static hdd_context_t *hdd_context_create(struct device *dev)
{
	QDF_STATUS status;
	int ret = 0;
	hdd_context_t *hdd_ctx;
	v_CONTEXT_t p_cds_context;

	ENTER();

	p_cds_context = cds_get_global_context();
	if (p_cds_context == NULL) {
		hdd_alert("Failed to get CDS global context");
		ret = -EINVAL;
		goto err_out;
	}

	hdd_ctx = hdd_cfg80211_wiphy_alloc(sizeof(hdd_context_t));

	if (hdd_ctx == NULL) {
		ret = -ENOMEM;
		goto err_out;
	}

	hdd_ctx->pcds_context = p_cds_context;
	hdd_ctx->parent_dev = dev;

	hdd_ctx->config = qdf_mem_malloc(sizeof(struct hdd_config));
	if (hdd_ctx->config == NULL) {
		hdd_alert("Failed to alloc memory for HDD config!");
		ret = -ENOMEM;
		goto err_free_hdd_context;
	}

	/* Read and parse the qcom_cfg.ini file */
	status = hdd_parse_config_ini(hdd_ctx);
	if (QDF_STATUS_SUCCESS != status) {
		hdd_err("Error (status: %d) parsing INI file: %s", status,
			  WLAN_INI_FILE);
		ret = -EINVAL;
		goto err_free_config;
	}

	hdd_ctx->configuredMcastBcastFilter =
		hdd_ctx->config->mcastBcastFilterSetting;

	hdd_notice("Setting configuredMcastBcastFilter: %d",
		   hdd_ctx->config->mcastBcastFilterSetting);

	if (hdd_ctx->config->fhostNSOffload)
		hdd_ctx->ns_offload_enable = true;

	cds_set_fatal_event(hdd_ctx->config->enable_fatal_event);

	hdd_override_ini_config(hdd_ctx);

	((cds_context_type *) (p_cds_context))->pHDDContext = (void *)hdd_ctx;

	ret = hdd_context_init(hdd_ctx);

	if (ret)
		goto err_free_config;


	pld_set_fw_debug_mode(hdd_ctx->parent_dev,
			      hdd_ctx->config->enable_fw_log);


	/* Uses to enabled logging after SSR */
	hdd_ctx->fw_log_settings.enable = hdd_ctx->config->enable_fw_log;

	if (QDF_GLOBAL_FTM_MODE == hdd_get_conparam())
		goto skip_multicast_logging;

	cds_set_multicast_logging(hdd_ctx->config->multicast_host_fw_msgs);

	ret = wlan_hdd_init_tx_rx_histogram(hdd_ctx);
	if (ret)
		goto err_deinit_hdd_context;

	ret = hdd_logging_sock_activate_svc(hdd_ctx);
	if (ret)
		goto err_free_histogram;


	/*
	 * Update QDF trace levels based upon the code. The multicast
	 * levels of the code need not be set when the logger thread
	 * is not enabled.
	 */
	if (cds_is_multicast_logging())
		wlan_logging_set_log_level();

skip_multicast_logging:
	hdd_set_trace_level_for_each(hdd_ctx);

	return hdd_ctx;

err_free_histogram:
	wlan_hdd_deinit_tx_rx_histogram(hdd_ctx);

err_deinit_hdd_context:
	hdd_context_deinit(hdd_ctx);

err_free_config:
	qdf_mem_free(hdd_ctx->config);

err_free_hdd_context:
	wiphy_free(hdd_ctx->wiphy);

err_out:
	return ERR_PTR(ret);
}

#ifdef WLAN_OPEN_P2P_INTERFACE
/**
 * hdd_open_p2p_interface - Open P2P interface
 * @hdd_ctx:	HDD context
 * @rtnl_held:	True if RTNL lock held
 *
 * Open P2P interface during probe. This function called to open the P2P
 * interface at probe along with STA interface.
 *
 * Return: 0 on success and errno on failure
 */
static int hdd_open_p2p_interface(hdd_context_t *hdd_ctx, bool rtnl_held)
{
	hdd_adapter_t *adapter;
	uint8_t *p2p_dev_addr;

	if (hdd_ctx->config->isP2pDeviceAddrAdministrated &&
	    !(hdd_ctx->config->intfMacAddr[0].bytes[0] & 0x02)) {
		qdf_mem_copy(hdd_ctx->p2pDeviceAddress.bytes,
			     hdd_ctx->config->intfMacAddr[0].bytes,
			     sizeof(tSirMacAddr));

		/*
		 * Generate the P2P Device Address.  This consists of
		 * the device's primary MAC address with the locally
		 * administered bit set.
		 */
		hdd_ctx->p2pDeviceAddress.bytes[0] |= 0x02;
	} else {
		p2p_dev_addr = wlan_hdd_get_intf_addr(hdd_ctx);
		if (p2p_dev_addr == NULL) {
			hdd_alert("Failed to allocate mac_address for p2p_device");
			return -ENOSPC;
		}

		qdf_mem_copy(&hdd_ctx->p2pDeviceAddress.bytes[0], p2p_dev_addr,
			     QDF_MAC_ADDR_SIZE);
	}

	adapter = hdd_open_adapter(hdd_ctx, QDF_P2P_DEVICE_MODE, "p2p%d",
				   &hdd_ctx->p2pDeviceAddress.bytes[0],
				   NET_NAME_UNKNOWN, rtnl_held);

	if (NULL == adapter) {
		hdd_alert("Failed to do hdd_open_adapter for P2P Device Interface");
		return -ENOSPC;
	}

	return 0;
}
#else
static inline int hdd_open_p2p_interface(hdd_context_t *hdd_ctx,
					 bool rtnl_held)
{
	return 0;
}
#endif

/**
 * hdd_start_station_adapter()- Start the Station Adapter
 * @adapter: HDD adapter
 *
 * This function initializes the adapter for the station mode.
 *
 * Return: 0 on success or errno on failure.
 */
int hdd_start_station_adapter(hdd_adapter_t *adapter)
{
	QDF_STATUS status;

	ENTER_DEV(adapter->dev);

	status = hdd_init_station_mode(adapter);

	if (QDF_STATUS_SUCCESS != status) {
		hdd_err("Error Initializing station mode: %d", status);
		return qdf_status_to_os_return(status);
	}

	hdd_register_tx_flow_control(adapter,
		hdd_tx_resume_timer_expired_handler,
		hdd_tx_resume_cb);

	EXIT();
	return 0;
}

/**
 * hdd_start_ap_adapter()- Start AP Adapter
 * @adapter: HDD adapter
 *
 * This function initializes the adapter for the AP mode.
 *
 * Return: 0 on success errno on failure.
 */
int hdd_start_ap_adapter(hdd_adapter_t *adapter)
{
	QDF_STATUS status;

	ENTER();

	status = hdd_init_ap_mode(adapter);

	if (QDF_STATUS_SUCCESS != status) {
		hdd_err("Error Initializing the AP mode: %d", status);
		return qdf_status_to_os_return(status);
	}

	hdd_register_tx_flow_control(adapter,
		hdd_softap_tx_resume_timer_expired_handler,
		hdd_softap_tx_resume_cb);

	EXIT();
	return 0;
}

/**
 * hdd_start_ftm_adapter()- Start FTM adapter
 * @adapter: HDD adapter
 *
 * This function initializes the adapter for the FTM mode.
 *
 * Return: 0 on success or errno on failure.
 */
int hdd_start_ftm_adapter(hdd_adapter_t *adapter)
{
	QDF_STATUS qdf_status;

	ENTER_DEV(adapter->dev);

	qdf_status = hdd_init_tx_rx(adapter);

	if (QDF_STATUS_SUCCESS != qdf_status) {
		hdd_err("Failed to start FTM adapter: %d", qdf_status);
		return qdf_status_to_os_return(qdf_status);
	}

	return 0;
	EXIT();
}

/**
 * hdd_open_interfaces - Open all required interfaces
 * hdd_ctx:	HDD context
 * rtnl_held: True if RTNL lock is held
 *
 * Open all the interfaces like STA, P2P and OCB based on the configuration.
 *
 * Return: Primary adapter on success and PTR_ERR on failure
 */
static hdd_adapter_t *hdd_open_interfaces(hdd_context_t *hdd_ctx,
					  bool rtnl_held)
{
	hdd_adapter_t *adapter = NULL;
	hdd_adapter_t *adapter_11p = NULL;
	int ret;

	if (hdd_ctx->config->dot11p_mode == WLAN_HDD_11P_STANDALONE) {
		/* Create only 802.11p interface */
		adapter = hdd_open_adapter(hdd_ctx, QDF_OCB_MODE, "wlanocb%d",
					   wlan_hdd_get_intf_addr(hdd_ctx),
					   NET_NAME_UNKNOWN, rtnl_held);

		if (adapter == NULL)
			return ERR_PTR(-ENOSPC);

		return adapter;
	}
	adapter = hdd_open_adapter(hdd_ctx, QDF_STA_MODE, "wlan%d",
				   wlan_hdd_get_intf_addr(hdd_ctx),
				   NET_NAME_UNKNOWN, rtnl_held);

	if (adapter == NULL)
		return ERR_PTR(-ENOSPC);
	/* fast roaming is allowed only on first STA, i.e. wlan adapter */
	adapter->fast_roaming_allowed = true;

	ret = hdd_open_p2p_interface(hdd_ctx, rtnl_held);
	if (ret)
		goto err_close_adapter;

	/* Open 802.11p Interface */
	if (hdd_ctx->config->dot11p_mode == WLAN_HDD_11P_CONCURRENT) {
		adapter_11p = hdd_open_adapter(hdd_ctx, QDF_OCB_MODE,
					       "wlanocb%d",
					       wlan_hdd_get_intf_addr(hdd_ctx),
					       NET_NAME_UNKNOWN, rtnl_held);
		if (adapter_11p == NULL) {
			hdd_err("Failed to open 802.11p interface");
			goto err_close_adapter;
		}
	}

	return adapter;

err_close_adapter:
	hdd_close_all_adapters(hdd_ctx, rtnl_held);
	return ERR_PTR(ret);
}

/**
 * hdd_update_country_code - Update country code
 * @hdd_ctx: HDD context
 * @adapter: Primary adapter context
 *
 * Update country code based on module parameter country_code at SME and wait
 * for the settings to take effect.
 *
 * Return: 0 on success and errno on failure
 */
static int hdd_update_country_code(hdd_context_t *hdd_ctx,
				  hdd_adapter_t *adapter)
{
	QDF_STATUS status;
	int ret = 0;
	unsigned long rc;

	if (country_code == NULL)
		return 0;

	INIT_COMPLETION(adapter->change_country_code);

	status = sme_change_country_code(hdd_ctx->hHal,
					 wlan_hdd_change_country_code_callback,
					 country_code, adapter,
					 hdd_ctx->pcds_context, eSIR_TRUE,
					 eSIR_TRUE);


	if (!QDF_IS_STATUS_SUCCESS(status)) {
		hdd_err("SME Change Country code from module param fail ret=%d",
			ret);
		return -EINVAL;
	}

	rc = wait_for_completion_timeout(&adapter->change_country_code,
			 msecs_to_jiffies(WLAN_WAIT_TIME_COUNTRY));
	if (!rc) {
		hdd_err("SME while setting country code timed out");
		ret = -ETIMEDOUT;
	}

	return ret;
}

#ifdef QCA_LL_TX_FLOW_CONTROL_V2
/**
 * hdd_txrx_populate_cds_config() - Populate txrx cds configuration
 * @cds_cfg: CDS Configuration
 * @hdd_ctx: Pointer to hdd context
 *
 * Return: none
 */
static inline void hdd_txrx_populate_cds_config(struct cds_config_info
						*cds_cfg,
						hdd_context_t *hdd_ctx)
{
	cds_cfg->tx_flow_stop_queue_th =
		hdd_ctx->config->TxFlowStopQueueThreshold;
	cds_cfg->tx_flow_start_queue_offset =
		hdd_ctx->config->TxFlowStartQueueOffset;
}
#else
static inline void hdd_txrx_populate_cds_config(struct cds_config_info
						*cds_cfg,
						hdd_context_t *hdd_ctx)
{
}
#endif

#ifdef FEATURE_WLAN_RA_FILTERING
/**
 * hdd_ra_populate_cds_config() - Populate RA filtering cds configuration
 * @cds_cfg: CDS Configuration
 * @hdd_ctx: Pointer to hdd context
 *
 * Return: none
 */
static inline void hdd_ra_populate_cds_config(struct cds_config_info *cds_cfg,
			      hdd_context_t *hdd_ctx)
{
	cds_cfg->ra_ratelimit_interval =
		hdd_ctx->config->RArateLimitInterval;
	cds_cfg->is_ra_ratelimit_enabled =
		hdd_ctx->config->IsRArateLimitEnabled;
}
#else
static inline void hdd_ra_populate_cds_config(struct cds_config_info *cds_cfg,
			     hdd_context_t *hdd_ctx)
{
}
#endif

/**
 * hdd_update_cds_config() - API to update cds configuration parameters
 * @hdd_ctx: HDD Context
 *
 * Return: 0 for Success, errno on failure
 */
static int hdd_update_cds_config(hdd_context_t *hdd_ctx)
{
	struct cds_config_info *cds_cfg;

	cds_cfg = (struct cds_config_info *)qdf_mem_malloc(sizeof(*cds_cfg));
	if (!cds_cfg) {
		hdd_err("failed to allocate cds config");
		return -ENOMEM;
	}

	cds_cfg->driver_type = DRIVER_TYPE_PRODUCTION;
	cds_cfg->powersave_offload_enabled =
		hdd_ctx->config->enablePowersaveOffload;
	cds_cfg->sta_dynamic_dtim = hdd_ctx->config->enableDynamicDTIM;
	cds_cfg->sta_mod_dtim = hdd_ctx->config->enableModulatedDTIM;
	cds_cfg->sta_maxlimod_dtim = hdd_ctx->config->fMaxLIModulatedDTIM;
	cds_cfg->wow_enable = hdd_ctx->config->wowEnable;
	cds_cfg->max_wow_filters = hdd_ctx->config->maxWoWFilters;

	/* Here ol_ini_info is used to store ini status of arp offload
	 * ns offload and others. Currently 1st bit is used for arp
	 * off load and 2nd bit for ns offload currently, rest bits are unused
	 */
	if (hdd_ctx->config->fhostArpOffload)
		cds_cfg->ol_ini_info = cds_cfg->ol_ini_info | 0x1;
	if (hdd_ctx->config->fhostNSOffload)
		cds_cfg->ol_ini_info = cds_cfg->ol_ini_info | 0x2;

	/*
	 * Copy the DFS Phyerr Filtering Offload status.
	 * This parameter reflects the value of the
	 * dfs_phyerr_filter_offload flag as set in the ini.
	 */
	cds_cfg->dfs_phyerr_filter_offload =
		hdd_ctx->config->fDfsPhyerrFilterOffload;
	if (hdd_ctx->config->ssdp)
		cds_cfg->ssdp = hdd_ctx->config->ssdp;

	cds_cfg->enable_mc_list = hdd_ctx->config->fEnableMCAddrList;
	cds_cfg->ap_maxoffload_peers = hdd_ctx->config->apMaxOffloadPeers;

	cds_cfg->ap_maxoffload_reorderbuffs =
		hdd_ctx->config->apMaxOffloadReorderBuffs;

	cds_cfg->ap_disable_intrabss_fwd =
		hdd_ctx->config->apDisableIntraBssFwd;

	cds_cfg->dfs_pri_multiplier =
		hdd_ctx->config->dfsRadarPriMultiplier;
	cds_cfg->reorder_offload =
			hdd_ctx->config->reorderOffloadSupport;

	/* IPA micro controller data path offload resource config item */
	cds_cfg->uc_offload_enabled = hdd_ipa_uc_is_enabled(hdd_ctx);
	if (!is_power_of_2(hdd_ctx->config->IpaUcTxBufCount)) {
		/* IpaUcTxBufCount should be power of 2 */
		hdd_err("Round down IpaUcTxBufCount %d to nearest power of 2",
			hdd_ctx->config->IpaUcTxBufCount);
		hdd_ctx->config->IpaUcTxBufCount =
			rounddown_pow_of_two(
				hdd_ctx->config->IpaUcTxBufCount);
		if (!hdd_ctx->config->IpaUcTxBufCount) {
			hdd_err("Failed to round down IpaUcTxBufCount");
			return -EINVAL;
		}
		hdd_err("IpaUcTxBufCount rounded down to %d",
			hdd_ctx->config->IpaUcTxBufCount);
	}
	cds_cfg->uc_txbuf_count = hdd_ctx->config->IpaUcTxBufCount;
	cds_cfg->uc_txbuf_size = hdd_ctx->config->IpaUcTxBufSize;
	if (!is_power_of_2(hdd_ctx->config->IpaUcRxIndRingCount)) {
		/* IpaUcRxIndRingCount should be power of 2 */
		hdd_err("Round down IpaUcRxIndRingCount %d to nearest power of 2",
			hdd_ctx->config->IpaUcRxIndRingCount);
		hdd_ctx->config->IpaUcRxIndRingCount =
			rounddown_pow_of_two(
				hdd_ctx->config->IpaUcRxIndRingCount);
		if (!hdd_ctx->config->IpaUcRxIndRingCount) {
			hdd_err("Failed to round down IpaUcRxIndRingCount");
			return -EINVAL;
		}
		hdd_err("IpaUcRxIndRingCount rounded down to %d",
			hdd_ctx->config->IpaUcRxIndRingCount);
	}
	cds_cfg->uc_rxind_ringcount =
		hdd_ctx->config->IpaUcRxIndRingCount;
	cds_cfg->uc_tx_partition_base =
				hdd_ctx->config->IpaUcTxPartitionBase;
	cds_cfg->max_scan = hdd_ctx->config->max_scan_count;

	cds_cfg->ip_tcp_udp_checksum_offload =
		hdd_ctx->config->enable_ip_tcp_udp_checksum_offload;
	cds_cfg->enable_rxthread = hdd_ctx->enableRxThread;
	cds_cfg->ce_classify_enabled =
		hdd_ctx->config->ce_classify_enabled;
	cds_cfg->bpf_packet_filter_enable =
		hdd_ctx->config->bpf_packet_filter_enable;
	cds_cfg->tx_chain_mask_cck = hdd_ctx->config->tx_chain_mask_cck;
	cds_cfg->self_gen_frm_pwr = hdd_ctx->config->self_gen_frm_pwr;
	cds_cfg->max_station = hdd_ctx->config->maxNumberOfPeers;
	cds_cfg->sub_20_channel_width = WLAN_SUB_20_CH_WIDTH_NONE;
	cds_cfg->flow_steering_enabled = hdd_ctx->config->flow_steering_enable;
	cds_cfg->self_recovery_enabled = hdd_ctx->config->enableSelfRecovery;
	cds_cfg->fw_timeout_crash = hdd_ctx->config->fw_timeout_crash;

	hdd_ra_populate_cds_config(cds_cfg, hdd_ctx);
	hdd_txrx_populate_cds_config(cds_cfg, hdd_ctx);
	hdd_nan_populate_cds_config(cds_cfg, hdd_ctx);
	hdd_lpass_populate_cds_config(cds_cfg, hdd_ctx);
	cds_init_ini_config(cds_cfg);
	return 0;
}

/**
 * hdd_init_thermal_info - Initialize thermal level
 * @hdd_ctx:	HDD context
 *
 * Initialize thermal level at SME layer and set the thermal level callback
 * which would be called when a configured thermal threshold is hit.
 *
 * Return: 0 on success and errno on failure
 */
static int hdd_init_thermal_info(hdd_context_t *hdd_ctx)
{
	tSmeThermalParams thermal_param;
	QDF_STATUS status;

	thermal_param.smeThermalMgmtEnabled =
		hdd_ctx->config->thermalMitigationEnable;
	thermal_param.smeThrottlePeriod = hdd_ctx->config->throttlePeriod;

	thermal_param.sme_throttle_duty_cycle_tbl[0] =
		hdd_ctx->config->throttle_dutycycle_level0;
	thermal_param.sme_throttle_duty_cycle_tbl[1] =
		hdd_ctx->config->throttle_dutycycle_level1;
	thermal_param.sme_throttle_duty_cycle_tbl[2] =
		hdd_ctx->config->throttle_dutycycle_level2;
	thermal_param.sme_throttle_duty_cycle_tbl[3] =
		hdd_ctx->config->throttle_dutycycle_level3;

	thermal_param.smeThermalLevels[0].smeMinTempThreshold =
		hdd_ctx->config->thermalTempMinLevel0;
	thermal_param.smeThermalLevels[0].smeMaxTempThreshold =
		hdd_ctx->config->thermalTempMaxLevel0;
	thermal_param.smeThermalLevels[1].smeMinTempThreshold =
		hdd_ctx->config->thermalTempMinLevel1;
	thermal_param.smeThermalLevels[1].smeMaxTempThreshold =
		hdd_ctx->config->thermalTempMaxLevel1;
	thermal_param.smeThermalLevels[2].smeMinTempThreshold =
		hdd_ctx->config->thermalTempMinLevel2;
	thermal_param.smeThermalLevels[2].smeMaxTempThreshold =
		hdd_ctx->config->thermalTempMaxLevel2;
	thermal_param.smeThermalLevels[3].smeMinTempThreshold =
		hdd_ctx->config->thermalTempMinLevel3;
	thermal_param.smeThermalLevels[3].smeMaxTempThreshold =
		hdd_ctx->config->thermalTempMaxLevel3;

	status = sme_init_thermal_info(hdd_ctx->hHal, thermal_param);

	if (!QDF_IS_STATUS_SUCCESS(status))
		return qdf_status_to_os_return(status);

	sme_add_set_thermal_level_callback(hdd_ctx->hHal,
					   hdd_set_thermal_level_cb);

	return 0;

}

#if defined(CONFIG_HDD_INIT_WITH_RTNL_LOCK)
/**
 * hdd_hold_rtnl_lock - Hold RTNL lock
 *
 * Hold RTNL lock
 *
 * Return: True if held and false otherwise
 */
static inline bool hdd_hold_rtnl_lock(void)
{
	rtnl_lock();
	return true;
}

/**
 * hdd_release_rtnl_lock - Release RTNL lock
 *
 * Release RTNL lock
 *
 * Return: None
 */
static inline void hdd_release_rtnl_lock(void)
{
	rtnl_unlock();
}
#else
static inline bool hdd_hold_rtnl_lock(void) { return false; }
static inline void hdd_release_rtnl_lock(void) { }
#endif

#if !defined(REMOVE_PKT_LOG)

/* MAX iwpriv command support */
#define PKTLOG_SET_BUFF_SIZE	3
#define MAX_PKTLOG_SIZE		16

/**
 * hdd_pktlog_set_buff_size() - set pktlog buffer size
 * @hdd_ctx: hdd context
 * @set_value2: pktlog buffer size value
 *
 *
 * Return: 0 for success or error.
 */
static int hdd_pktlog_set_buff_size(hdd_context_t *hdd_ctx, int set_value2)
{
	struct sir_wifi_start_log start_log = { 0 };
	QDF_STATUS status;

	start_log.ring_id = RING_ID_PER_PACKET_STATS;
	start_log.verbose_level = WLAN_LOG_LEVEL_OFF;
	start_log.ini_triggered = cds_is_packet_log_enabled();
	start_log.user_triggered = 1;
	start_log.size = set_value2;

	status = sme_wifi_start_logger(hdd_ctx->hHal, start_log);
	if (!QDF_IS_STATUS_SUCCESS(status)) {
		hdd_err("sme_wifi_start_logger failed(err=%d)", status);
		EXIT();
		return -EINVAL;
	}

	return 0;
}

/**
 * hdd_process_pktlog_command() - process pktlog command
 * @hdd_ctx: hdd context
 * @set_value: value set by user
 * @set_value2: pktlog buffer size value
 *
 * This function process pktlog command.
 * set_value2 only matters when set_value is 3 (set buff size)
 * otherwise we ignore it.
 *
 * Return: 0 for success or error.
 */
int hdd_process_pktlog_command(hdd_context_t *hdd_ctx, uint32_t set_value,
			       int set_value2)
{
	int ret;
	bool enable;
	uint8_t user_triggered = 0;

	ret = wlan_hdd_validate_context(hdd_ctx);
	if (0 != ret)
		return ret;

	hdd_info("set pktlog %d, set size %d", set_value, set_value2);

	if (set_value > PKTLOG_SET_BUFF_SIZE) {
		hdd_err("invalid pktlog value %d", set_value);
		return -EINVAL;
	}

	if (set_value == PKTLOG_SET_BUFF_SIZE) {
		if (set_value2 <= 0) {
			hdd_err("invalid pktlog size %d", set_value2);
			return -EINVAL;
		} else if (set_value2 > MAX_PKTLOG_SIZE) {
			hdd_err("Pktlog buff size is too large. max value is 16MB.\n");
			return -EINVAL;
		}
		return hdd_pktlog_set_buff_size(hdd_ctx, set_value2);
	}

	/*
	 * set_value = 0 then disable packetlog
	 * set_value = 1 enable packetlog forcefully
	 * set_vlaue = 2 then disable packetlog if disabled through ini or
	 *                     enable packetlog with AUTO type.
	 */
	enable = ((set_value > 0) && cds_is_packet_log_enabled()) ?
			 true : false;

	if (1 == set_value) {
		enable = true;
		user_triggered = 1;
	}

	return hdd_pktlog_enable_disable(hdd_ctx, enable, user_triggered, 0);
}
/**
 * hdd_pktlog_enable_disable() - Enable/Disable packet logging
 * @hdd_ctx: HDD context
 * @enable: Flag to enable/disable
 * @user_triggered: triggered through iwpriv
 * @size: buffer size to be used for packetlog
 *
 * Return: 0 on success; error number otherwise
 */
int hdd_pktlog_enable_disable(hdd_context_t *hdd_ctx, bool enable,
				uint8_t user_triggered, int size)
{
	struct sir_wifi_start_log start_log;
	QDF_STATUS status;

	start_log.ring_id = RING_ID_PER_PACKET_STATS;
	start_log.verbose_level =
			enable ? WLAN_LOG_LEVEL_ACTIVE : WLAN_LOG_LEVEL_OFF;
	start_log.ini_triggered = cds_is_packet_log_enabled();
	start_log.user_triggered = user_triggered;
	start_log.size = size;
	/*
	 * Use "is_iwpriv_command" flag to distinguish iwpriv command from other
	 * commands. Host uses this flag to decide whether to send pktlog
	 * disable command to fw without sending pktlog enable command
	 * previously. For eg, If vendor sends pktlog disable command without
	 * sending pktlog enable command, then host discards the packet
	 * but for iwpriv command, host will send it to fw.
	 */
	start_log.is_iwpriv_command = 1;
	status = sme_wifi_start_logger(hdd_ctx->hHal, start_log);
	if (!QDF_IS_STATUS_SUCCESS(status)) {
		hdd_err("sme_wifi_start_logger failed(err=%d)", status);
		EXIT();
		return -EINVAL;
	}

	return 0;
}
#endif /* REMOVE_PKT_LOG */


#ifdef FEATURE_WLAN_MCC_TO_SCC_SWITCH
/**
 * hdd_register_for_sap_restart_with_channel_switch() - Register for SAP channel
 * switch without restart
 *
 * Registers callback function to change the operating channel of SAP by using
 * channel switch announcements instead of restarting SAP.
 *
 * Return: QDF_STATUS
 */
QDF_STATUS hdd_register_for_sap_restart_with_channel_switch(void)
{
	QDF_STATUS status;

	status = cds_register_sap_restart_channel_switch_cb(
			(void *)hdd_sap_restart_with_channel_switch);
	if (!QDF_IS_STATUS_SUCCESS(status))
		hdd_err("restart cb registration failed");

	return status;
}
#endif

/**
 * hdd_get_platform_wlan_mac_buff() - API to query platform driver
 *                                    for MAC address
 * @dev: Device Pointer
 * @num: Number of Valid Mac address
 *
 * Return: Pointer to MAC address buffer
 */
static uint8_t *hdd_get_platform_wlan_mac_buff(struct device *dev,
					       uint32_t *num)
{
	return pld_get_wlan_mac_address(dev, num);
}

/**
 * hdd_populate_random_mac_addr() - API to populate random mac addresses
 * @hdd_ctx: HDD Context
 * @num: Number of random mac addresses needed
 *
 * Generate random addresses using bit manipulation on the base mac address
 *
 * Return: None
 */
static void hdd_populate_random_mac_addr(hdd_context_t *hdd_ctx, uint32_t num)
{
	uint32_t start_idx = QDF_MAX_CONCURRENCY_PERSONA - num;
	uint32_t iter;
	struct hdd_config *ini = hdd_ctx->config;
	uint8_t *buf = NULL;
	uint8_t macaddr_b3, tmp_br3;
	uint8_t *src = ini->intfMacAddr[0].bytes;

	for (iter = start_idx; iter < QDF_MAX_CONCURRENCY_PERSONA; ++iter) {
		buf = ini->intfMacAddr[iter].bytes;
		qdf_mem_copy(buf, src, QDF_MAC_ADDR_SIZE);
		macaddr_b3 = buf[3];
		tmp_br3 = ((macaddr_b3 >> 4 & INTF_MACADDR_MASK) + iter) &
			INTF_MACADDR_MASK;
		macaddr_b3 += tmp_br3;
		macaddr_b3 ^= (1 << INTF_MACADDR_MASK);
		buf[0] |= 0x02;
		buf[3] = macaddr_b3;
		hdd_info(MAC_ADDRESS_STR, MAC_ADDR_ARRAY(buf));
	}
}

/**
 * hdd_platform_wlan_mac() - API to get mac addresses from platform driver
 * @hdd_ctx: HDD Context
 *
 * API to get mac addresses from platform driver and update the driver
 * structures and configure FW with the base mac address.
 * Return: int
 */
static int hdd_platform_wlan_mac(hdd_context_t *hdd_ctx)
{
	uint32_t no_of_mac_addr, iter;
	uint32_t max_mac_addr = QDF_MAX_CONCURRENCY_PERSONA;
	uint32_t mac_addr_size = QDF_MAC_ADDR_SIZE;
	uint8_t *addr, *buf;
	struct device *dev = hdd_ctx->parent_dev;
	struct hdd_config *ini = hdd_ctx->config;
	tSirMacAddr mac_addr;
	QDF_STATUS status;

	addr = hdd_get_platform_wlan_mac_buff(dev, &no_of_mac_addr);

	if (no_of_mac_addr == 0 || !addr) {
		hdd_warn("Platform Driver Doesn't have wlan mac addresses");
		return -EINVAL;
	}

	if (no_of_mac_addr > max_mac_addr)
		no_of_mac_addr = max_mac_addr;

	qdf_mem_copy(&mac_addr, addr, mac_addr_size);

	for (iter = 0; iter < no_of_mac_addr; ++iter, addr += mac_addr_size) {
		buf = ini->intfMacAddr[iter].bytes;
		qdf_mem_copy(buf, addr, QDF_MAC_ADDR_SIZE);
		hdd_info(MAC_ADDRESS_STR, MAC_ADDR_ARRAY(buf));
	}

	status = sme_set_custom_mac_addr(mac_addr);

	if (!QDF_IS_STATUS_SUCCESS(status))
		return -EAGAIN;
	if (no_of_mac_addr < max_mac_addr)
		hdd_populate_random_mac_addr(hdd_ctx, max_mac_addr -
					     no_of_mac_addr);
	return 0;
}

/**
 * hdd_update_mac_addr_to_fw() - API to update wlan mac addresses to FW
 * @hdd_ctx: HDD Context
 *
 * Update MAC address to FW. If MAC address passed by FW is invalid, host
 * will generate its own MAC and update it to FW.
 *
 * Return: 0 for success
 *         Non-zero error code for failure
 */
static int hdd_update_mac_addr_to_fw(hdd_context_t *hdd_ctx)
{
	tSirMacAddr customMacAddr;
	QDF_STATUS status;

	qdf_mem_copy(&customMacAddr,
		     &hdd_ctx->config->intfMacAddr[0].bytes[0],
		     sizeof(tSirMacAddr));
	status = sme_set_custom_mac_addr(customMacAddr);
	if (!QDF_IS_STATUS_SUCCESS(status))
		return -EAGAIN;
	return 0;
}

/**
 * hdd_initialize_mac_address() - API to get wlan mac addresses
 * @hdd_ctx: HDD Context
 *
 * Get MAC addresses from platform driver or wlan_mac.bin. If platform driver
 * is provisioned with mac addresses, driver uses it, else it will use
 * wlan_mac.bin to update HW MAC addresses.
 *
 * Return: None
 */
static void hdd_initialize_mac_address(hdd_context_t *hdd_ctx)
{
	QDF_STATUS status;
	int ret;

	ret = hdd_platform_wlan_mac(hdd_ctx);
	if (ret == 0)
		return;

	hdd_warn("Can't update mac config via platform driver ret:%d", ret);

	status = hdd_update_mac_config(hdd_ctx);

	if (QDF_IS_STATUS_SUCCESS(status))
		return;

	hdd_warn("can't update mac config via wlan_mac.bin, using MAC from ini file or auto-gen");

	if (hdd_ctx->update_mac_addr_to_fw) {
		ret = hdd_update_mac_addr_to_fw(hdd_ctx);
		if (ret != 0) {
			hdd_err("MAC address out-of-sync, ret:%d", ret);
			QDF_ASSERT(ret);
		}
	}
}

/**
 * hdd_tsf_init() - Initialize the TSF synchronization interface
 * @hdd_ctx: HDD global context
 *
 * When TSF synchronization via GPIO is supported by the driver and
 * has been enabled in the configuration file, this function plumbs
 * the GPIO value down to firmware via SME.
 *
 * Return: None
 */
#ifdef WLAN_FEATURE_TSF
static void hdd_tsf_init(hdd_context_t *hdd_ctx)
{
	QDF_STATUS status;

	if (hdd_ctx->config->tsf_gpio_pin == TSF_GPIO_PIN_INVALID)
		return;

	status = sme_set_tsf_gpio(hdd_ctx->hHal,
				      hdd_ctx->config->tsf_gpio_pin);
	if (!QDF_IS_STATUS_SUCCESS(status))
		hdd_err("Set tsf GPIO failed, status: %d", status);
}
#else
static void hdd_tsf_init(hdd_context_t *hdd_ctx)
{
}
#endif

/**
 * hdd_pre_enable_configure() - Configurations prior to cds_enable
 * @hdd_ctx:	HDD context
 *
 * Pre configurations to be done at lower layer before calling cds enable.
 *
 * Return: 0 on success and errno on failure.
 */
static int hdd_pre_enable_configure(hdd_context_t *hdd_ctx)
{
	int ret;
	QDF_STATUS status;
	tSirRetStatus hal_status;
	void *soc = cds_get_context(QDF_MODULE_ID_SOC);

	cdp_register_pause_cb(soc, wlan_hdd_txrx_pause_cb);
	/*
	 * Set 802.11p config
	 * TODO-OCB: This has been temporarily added here to ensure this
	 * parameter is set in CSR when we init the channel list. This should
	 * be removed once the 5.9 GHz channels are added to the regulatory
	 * domain.
	 */
	hdd_set_dot11p_config(hdd_ctx);

	/*
	 * Note that the cds_pre_enable() sequence triggers the cfg download.
	 * The cfg download must occur before we update the SME config
	 * since the SME config operation must access the cfg database
	 */
	status = hdd_set_sme_config(hdd_ctx);

	if (QDF_STATUS_SUCCESS != status) {
		hdd_alert("Failed hdd_set_sme_config: %d", status);
		ret = qdf_status_to_os_return(status);
		goto out;
	}

	ret = wma_cli_set_command(0, WMI_PDEV_PARAM_TX_CHAIN_MASK_1SS,
				  hdd_ctx->config->tx_chain_mask_1ss,
				  PDEV_CMD);
	if (0 != ret) {
		hdd_err("WMI_PDEV_PARAM_TX_CHAIN_MASK_1SS failed %d", ret);
		goto out;
	}

	hdd_program_country_code(hdd_ctx);

	status = hdd_set_sme_chan_list(hdd_ctx);
	if (status != QDF_STATUS_SUCCESS) {
		hdd_alert("Failed to init channel list: %d", status);
		ret = qdf_status_to_os_return(status);
		goto out;
	}

	/* Apply the cfg.ini to cfg.dat */
	if (!hdd_update_config_cfg(hdd_ctx)) {
		hdd_alert("config update failed");
		ret = -EINVAL;
		goto out;
	}

	/*
	 * Set the MAC Address Currently this is used by HAL to add self sta.
	 * Remove this once self sta is added as part of session open.
	 */
	hal_status = cfg_set_str(hdd_ctx->hHal, WNI_CFG_STA_ID,
				     hdd_ctx->config->intfMacAddr[0].bytes,
				     sizeof(hdd_ctx->config->intfMacAddr[0]));

	if (!IS_SIR_STATUS_SUCCESS(hal_status)) {
		hdd_err("Failed to set MAC Address. HALStatus is %08d [x%08x]",
			hal_status, hal_status);
		ret = -EINVAL;
		goto out;
	}

	hdd_init_channel_avoidance(hdd_ctx);

out:
	return ret;
}

/**
 * wlan_hdd_p2p_lo_event_callback - P2P listen offload stop event handler
 * @context_ptr - hdd context pointer
 * @event_ptr - event structure pointer
 *
 * This is the p2p listen offload stop event handler, it sends vendor
 * event back to supplicant to notify the stop reason.
 *
 * Return: None
 */
static void wlan_hdd_p2p_lo_event_callback(void *context_ptr,
				void *event_ptr)
{
	hdd_context_t *hdd_ctx = (hdd_context_t *)context_ptr;
	struct sir_p2p_lo_event *evt = event_ptr;
	struct sk_buff *vendor_event;

	ENTER();

	if (hdd_ctx == NULL) {
		hdd_err("Invalid HDD context pointer");
		return;
	}

	vendor_event =
		cfg80211_vendor_event_alloc(hdd_ctx->wiphy,
			NULL, sizeof(uint32_t) + NLMSG_HDRLEN,
			QCA_NL80211_VENDOR_SUBCMD_P2P_LO_EVENT_INDEX,
			GFP_KERNEL);

	if (!vendor_event) {
		hdd_err("cfg80211_vendor_event_alloc failed");
		return;
	}

	if (nla_put_u32(vendor_event,
			QCA_WLAN_VENDOR_ATTR_P2P_LISTEN_OFFLOAD_STOP_REASON,
			evt->reason_code)) {
		hdd_err("nla put failed");
		kfree_skb(vendor_event);
		return;
	}

	cfg80211_vendor_event(vendor_event, GFP_KERNEL);
}

/**
 * hdd_adaptive_dwelltime_init() - initialization for adaptive dwell time config
 * @hdd_ctx: HDD context
 *
 * This function sends the adaptive dwell time config configuration to the
 * firmware via WMA
 *
 * Return: 0 - success, < 0 - failure
 */
static int hdd_adaptive_dwelltime_init(hdd_context_t *hdd_ctx)
{
	QDF_STATUS status;
	struct adaptive_dwelltime_params dwelltime_params;

	dwelltime_params.is_enabled =
			hdd_ctx->config->adaptive_dwell_mode_enabled;
	dwelltime_params.dwelltime_mode =
			hdd_ctx->config->global_adapt_dwelltime_mode;
	dwelltime_params.lpf_weight =
			hdd_ctx->config->adapt_dwell_lpf_weight;
	dwelltime_params.passive_mon_intval =
			hdd_ctx->config->adapt_dwell_passive_mon_intval;
	dwelltime_params.wifi_act_threshold =
			hdd_ctx->config->adapt_dwell_wifi_act_threshold;

	status = sme_set_adaptive_dwelltime_config(hdd_ctx->hHal,
						   &dwelltime_params);

	hdd_debug("Sending Adaptive Dwelltime Configuration to fw");
	if (!QDF_IS_STATUS_SUCCESS(status)) {
		hdd_err("Failed to send Adaptive Dwelltime configuration!");
		return -EAGAIN;
	}
	return 0;
}

#ifdef FEATURE_WLAN_AUTO_SHUTDOWN
/**
 * hdd_set_auto_shutdown_cb() - Set auto shutdown callback
 * @hdd_ctx:	HDD context
 *
 * Set auto shutdown callback to get indications from firmware to indicate
 * userspace to shutdown WLAN after a configured amount of inactivity.
 *
 * Return: 0 on success and errno on failure.
 */
static int hdd_set_auto_shutdown_cb(hdd_context_t *hdd_ctx)
{
	QDF_STATUS status;

	if (!hdd_ctx->config->WlanAutoShutdown)
		return 0;

	status = sme_set_auto_shutdown_cb(hdd_ctx->hHal,
					  wlan_hdd_auto_shutdown_cb);
	if (status != QDF_STATUS_SUCCESS)
		hdd_err("Auto shutdown feature could not be enabled: %d",
			status);

	return qdf_status_to_os_return(status);
}
#else
static int hdd_set_auto_shutdown_cb(hdd_context_t *hdd_ctx)
{
	return 0;
}
#endif

/**
 * hdd_features_init() - Init features
 * @hdd_ctx:	HDD context
 * @adapter:	Primary adapter context
 *
 * Initialize features and their feature context after WLAN firmware is up.
 *
 * Return: 0 on success and errno on failure.
 */
static int hdd_features_init(hdd_context_t *hdd_ctx, hdd_adapter_t *adapter)
{
	tSirTxPowerLimit hddtxlimit;
	QDF_STATUS status;
	int ret;

	ENTER();

	ret = hdd_update_country_code(hdd_ctx, adapter);
	if (ret) {
		hdd_err("Failed to update country code: %d", ret);
		goto out;
	}

	/* FW capabilities received, Set the Dot11 mode */
	sme_setdef_dot11mode(hdd_ctx->hHal);
	sme_set_prefer_80MHz_over_160MHz(hdd_ctx->hHal,
			hdd_ctx->config->sta_prefer_80MHz_over_160MHz);


	if (hdd_ctx->config->fIsImpsEnabled)
		hdd_set_idle_ps_config(hdd_ctx, true);
	else
		hdd_set_idle_ps_config(hdd_ctx, false);

	if (hdd_lro_init(hdd_ctx))
		hdd_err("Unable to initialize LRO in fw");

	if (hdd_adaptive_dwelltime_init(hdd_ctx))
		hdd_err("Unable to send adaptive dwelltime setting to FW");

	ret = hdd_init_thermal_info(hdd_ctx);
	if (ret) {
		hdd_err("Error while initializing thermal information");
		goto deregister_frames;
	}

	hddtxlimit.txPower2g = hdd_ctx->config->TxPower2g;
	hddtxlimit.txPower5g = hdd_ctx->config->TxPower5g;
	status = sme_txpower_limit(hdd_ctx->hHal, &hddtxlimit);
	if (!QDF_IS_STATUS_SUCCESS(status))
		hdd_err("Error setting txlimit in sme: %d", status);

	hdd_tsf_init(hdd_ctx);
	hdd_encrypt_decrypt_init(hdd_ctx);

	ret = hdd_register_cb(hdd_ctx);
	if (ret) {
		hdd_err("Failed to register HDD callbacks!");
		goto deregister_frames;
	}

	if (hdd_ctx->config->dual_mac_feature_disable) {
		status = wlan_hdd_disable_all_dual_mac_features(hdd_ctx);
		if (status != QDF_STATUS_SUCCESS) {
			hdd_err("Failed to disable dual mac features");
			goto deregister_cb;
		}
	}

	/* register P2P Listen Offload event callback */
	if (wma_is_p2p_lo_capable())
		sme_register_p2p_lo_event(hdd_ctx->hHal, hdd_ctx,
				wlan_hdd_p2p_lo_event_callback);

	ret = hdd_set_auto_shutdown_cb(hdd_ctx);

	if (ret)
		goto deregister_cb;

	EXIT();
	return 0;

deregister_cb:
	hdd_deregister_cb(hdd_ctx);
deregister_frames:
	wlan_hdd_cfg80211_deregister_frames(adapter);
out:
	return -EINVAL;

}


/**
 * hdd_configure_cds() - Configure cds modules
 * @hdd_ctx:	HDD context
 * @adapter:	Primary adapter context
 *
 * Enable Cds modules after WLAN firmware is up.
 *
 * Return: 0 on success and errno on failure.
 */
int hdd_configure_cds(hdd_context_t *hdd_ctx, hdd_adapter_t *adapter)
{
	int ret;
	QDF_STATUS status;
	/* structure of function pointers to be used by CDS */
	struct cds_sme_cbacks sme_cbacks;

	ret = hdd_pre_enable_configure(hdd_ctx);
	if (ret) {
		hdd_err("Failed to pre-configure cds");
		goto out;
	}

	/*
	 * Start CDS which starts up the SME/MAC/HAL modules and everything
	 * else
	 */
	status = cds_enable(hdd_ctx->hdd_psoc, hdd_ctx->pcds_context);

	if (!QDF_IS_STATUS_SUCCESS(status)) {
		hdd_alert("cds_enable failed");
		goto out;
	}

	status = hdd_post_cds_enable_config(hdd_ctx);
	if (!QDF_IS_STATUS_SUCCESS(status)) {
		hdd_alert("hdd_post_cds_enable_config failed");
		goto cds_disable;
	}

	ret = hdd_features_init(hdd_ctx, adapter);
	if (ret)
		goto cds_disable;

	sme_cbacks.sme_get_valid_channels = sme_get_cfg_valid_channels;
	sme_cbacks.sme_get_nss_for_vdev = sme_get_vdev_type_nss;
	status = cds_init_policy_mgr(&sme_cbacks);
	if (!QDF_IS_STATUS_SUCCESS(status)) {
		hdd_err("Policy manager initialization failed");
		goto hdd_features_deinit;
	}

	return 0;

hdd_features_deinit:
	hdd_deregister_cb(hdd_ctx);
	wlan_hdd_cfg80211_deregister_frames(adapter);
cds_disable:
	cds_disable(hdd_ctx->hdd_psoc, hdd_ctx->pcds_context);

out:
	return -EINVAL;
}

/**
 * hdd_deconfigure_cds() -De-Configure cds
 * @hdd_ctx:	HDD context
 *
 * Deconfigure Cds modules before WLAN firmware is down.
 *
 * Return: 0 on success and errno on failure.
 */
static int hdd_deconfigure_cds(hdd_context_t *hdd_ctx)
{
	QDF_STATUS qdf_status;
	int ret = 0;

	ENTER();
	/* De-register the SME callbacks */
	hdd_deregister_cb(hdd_ctx);
	hdd_encrypt_decrypt_deinit(hdd_ctx);

	/* De-init Policy Manager */
	if (!QDF_IS_STATUS_SUCCESS(cds_deinit_policy_mgr())) {
		hdd_err("Failed to deinit policy manager");
		/* Proceed and complete the clean up */
		ret = -EINVAL;
	}

	qdf_status = cds_disable(hdd_ctx->hdd_psoc, hdd_ctx->pcds_context);
	if (!QDF_IS_STATUS_SUCCESS(qdf_status)) {
		hdd_err("Failed to Disable the CDS Modules! :%d",
			qdf_status);
		ret = -EINVAL;
	}

	EXIT();
	return ret;
}


/**
 * hdd_wlan_stop_modules - Single driver state machine for stoping modules
 * @hdd_ctx: HDD context
 *
 * This function maintains the driver state machine it will be invoked from
 * exit, shutdown and con_mode change handler. Depending on the driver state
 * shall perform the stopping/closing of the modules.
 *
 * Return: 0 for success; non-zero for failure
 */
int hdd_wlan_stop_modules(hdd_context_t *hdd_ctx)
{
	void *hif_ctx;
	qdf_device_t qdf_ctx;
	QDF_STATUS qdf_status;
	int ret = 0;
	p_cds_sched_context cds_sched_context = NULL;

	ENTER();

	qdf_ctx = cds_get_context(QDF_MODULE_ID_QDF_DEVICE);
	if (!qdf_ctx) {
		hdd_err("QDF device context NULL");
		return -EINVAL;
	}

	cds_sched_context = get_cds_sched_ctxt();
	if (!cds_sched_context) {
		hdd_err("cds scheduler context NULL");
		return -EINVAL;
	}
	mutex_lock(&hdd_ctx->iface_change_lock);
	hdd_ctx->stop_modules_in_progress = true;

	hdd_info("Present Driver Status: %d", hdd_ctx->driver_status);

	switch (hdd_ctx->driver_status) {
	case DRIVER_MODULES_UNINITIALIZED:
		hdd_info("Modules not initialized just return");
		goto done;
	case DRIVER_MODULES_CLOSED:
		hdd_info("Modules already closed");
		goto done;
	case DRIVER_MODULES_ENABLED:
		hdd_disable_power_management();
		if (hdd_deconfigure_cds(hdd_ctx)) {
			hdd_alert("Failed to de-configure CDS");
			QDF_ASSERT(0);
			ret = -EINVAL;
		}
		hdd_info("successfully Disabled the CDS modules!");
		hdd_ctx->driver_status = DRIVER_MODULES_OPENED;
		break;
	case DRIVER_MODULES_OPENED:
		hdd_info("Closing CDS modules!");
		break;
	default:
		hdd_err("Trying to stop wlan in a wrong state: %d",
				hdd_ctx->driver_status);
		QDF_ASSERT(0);
		ret = -EINVAL;
		goto done;
	}

	qdf_status = cds_post_disable(hdd_ctx->pcds_context);
	if (!QDF_IS_STATUS_SUCCESS(qdf_status)) {
		hdd_err("Failed to process post CDS disable Modules! :%d",
			qdf_status);
		ret = -EINVAL;
		QDF_ASSERT(0);
	}
	qdf_status = cds_close(hdd_ctx->hdd_psoc, hdd_ctx->pcds_context);
	if (!QDF_IS_STATUS_SUCCESS(qdf_status)) {
		hdd_warn("Failed to stop CDS:%d", qdf_status);
		ret = -EINVAL;
		QDF_ASSERT(0);
	}

	qdf_status = hdd_release_and_destroy_pdev(hdd_ctx);
	if (QDF_IS_STATUS_ERROR(qdf_status))
		hdd_err("Pdev delete failed");

	qdf_status = hdd_release_and_destroy_psoc(hdd_ctx);
	if (QDF_IS_STATUS_ERROR(qdf_status))
		hdd_err("Psoc delete failed");

	hif_ctx = cds_get_context(QDF_MODULE_ID_HIF);
	if (!hif_ctx) {
		hdd_err("Hif context is Null");
		ret = -EINVAL;
	}

	hdd_hif_close(hif_ctx);

	ol_cds_free();

	if (!cds_is_driver_recovering() && !cds_is_driver_unloading()) {
		ret = pld_power_off(qdf_ctx->dev);
		if (ret)
			hdd_err("CNSS power down failed put device into Low power mode:%d",
				ret);
	}
	hdd_ctx->driver_status = DRIVER_MODULES_CLOSED;

done:
	hdd_ctx->stop_modules_in_progress = false;
	mutex_unlock(&hdd_ctx->iface_change_lock);
	EXIT();

	return ret;

}

/**
 * hdd_iface_change_callback() - Function invoked when stop modules expires
 * @priv: pointer to hdd context
 *
 * This function is invoked when the timer waiting for the interface change
 * expires, it shall cut-down the power to wlan and stop all the modules.
 *
 * Return: void
 */
static void hdd_iface_change_callback(void *priv)
{
	hdd_context_t *hdd_ctx = (hdd_context_t *) priv;
	int ret;
	int status = wlan_hdd_validate_context(hdd_ctx);

	if (status)
		return;

	ENTER();
	hdd_info("Interface change timer expired close the modules!");
	ret = hdd_wlan_stop_modules(hdd_ctx);
	if (ret)
		hdd_alert("Failed to stop modules");
	EXIT();
}

/**
 * hdd_state_info_dump() - prints state information of hdd layer
 * @buf: buffer pointer
 * @size: size of buffer to be filled
 *
 * This function is used to dump state information of hdd layer
 *
 * Return: None
 */
static void hdd_state_info_dump(char **buf_ptr, uint16_t *size)
{
	hdd_context_t *hdd_ctx;
	hdd_adapter_list_node_t *adapter_node = NULL, *next = NULL;
	QDF_STATUS status;
	hdd_station_ctx_t *hdd_sta_ctx;
	hdd_adapter_t *adapter;
	uint16_t len = 0;
	char *buf = *buf_ptr;

	hdd_ctx = cds_get_context(QDF_MODULE_ID_HDD);
	if (!hdd_ctx) {
		hdd_err("Failed to get hdd context ");
		return;
	}

	hdd_notice("size of buffer: %d", *size);

	len += scnprintf(buf + len, *size - len,
		"\n isWiphySuspended %d", hdd_ctx->isWiphySuspended);
	len += scnprintf(buf + len, *size - len,
		"\n is_scheduler_suspended %d",
		hdd_ctx->is_scheduler_suspended);

	status = hdd_get_front_adapter(hdd_ctx, &adapter_node);

	while (NULL != adapter_node && QDF_STATUS_SUCCESS == status) {
		adapter = adapter_node->pAdapter;
		if (adapter->dev)
			len += scnprintf(buf + len, *size - len,
				"\n device name: %s", adapter->dev->name);
			len += scnprintf(buf + len, *size - len,
				"\n device_mode: %d", adapter->device_mode);
		switch (adapter->device_mode) {
		case QDF_STA_MODE:
		case QDF_P2P_CLIENT_MODE:
			hdd_sta_ctx = WLAN_HDD_GET_STATION_CTX_PTR(adapter);
			len += scnprintf(buf + len, *size - len,
				"\n connState: %d",
				hdd_sta_ctx->conn_info.connState);
			break;

		default:
			break;
		}
		status = hdd_get_next_adapter(hdd_ctx, adapter_node, &next);
		adapter_node = next;
	}

	*size -= len;
	*buf_ptr += len;
}

/**
 * hdd_register_debug_callback() - registration function for hdd layer
 * to print hdd state information
 *
 * Return: None
 */
static void hdd_register_debug_callback(void)
{
	qdf_register_debug_callback(QDF_MODULE_ID_HDD, &hdd_state_info_dump);
}

/**
 * hdd_wlan_startup() - HDD init function
 * @dev:	Pointer to the underlying device
 *
 * This is the driver startup code executed once a WLAN device has been detected
 *
 * Return:  0 for success, < 0 for failure
 */
int hdd_wlan_startup(struct device *dev)
{
	QDF_STATUS status;
	hdd_adapter_t *adapter = NULL;
	hdd_context_t *hdd_ctx = NULL;
	int ret;
	void *hif_sc;
	bool rtnl_held;
	int set_value;

	ENTER();

	hdd_ctx = hdd_context_create(dev);

	if (IS_ERR(hdd_ctx))
		return PTR_ERR(hdd_ctx);

	qdf_mc_timer_init(&hdd_ctx->iface_change_timer, QDF_TIMER_TYPE_SW,
			  hdd_iface_change_callback, (void *)hdd_ctx);

	mutex_init(&hdd_ctx->iface_change_lock);

	ret = hdd_init_netlink_services(hdd_ctx);
	if (ret)
		goto err_hdd_free_context;

	hdd_green_ap_init(hdd_ctx);

	ret = hdd_wlan_start_modules(hdd_ctx, adapter, false);
	if (ret) {
		hdd_alert("Failed to start modules: %d", ret);
		goto err_exit_nl_srv;
	}

	wlan_hdd_update_wiphy(hdd_ctx);

	if (0 != wlan_hdd_set_wow_pulse(hdd_ctx, true))
		hdd_notice("Failed to set wow pulse");

	hdd_ctx->hHal = cds_get_context(QDF_MODULE_ID_SME);

	if (NULL == hdd_ctx->hHal) {
		hdd_alert("HAL context is null");
		goto err_stop_modules;
	}

	ret = hdd_wiphy_init(hdd_ctx);
	if (ret) {
		hdd_alert("Failed to initialize wiphy: %d", ret);
		goto err_stop_modules;
	}

	if (hdd_ctx->config->enable_dp_trace)
		qdf_dp_trace_init();

	if (hdd_ipa_init(hdd_ctx) == QDF_STATUS_E_FAILURE)
		goto err_wiphy_unregister;

	hdd_initialize_mac_address(hdd_ctx);

	rtnl_held = hdd_hold_rtnl_lock();

	adapter = hdd_open_interfaces(hdd_ctx, rtnl_held);

	if (IS_ERR(adapter)) {
		hdd_alert("Failed to open interface, adapter is NULL");
		ret = PTR_ERR(adapter);
		goto err_ipa_cleanup;
	}

	hif_sc = cds_get_context(QDF_MODULE_ID_HIF);
	if (!hif_sc) {
		hdd_err("HIF context is NULL");
		goto err_close_adapter;
	}
	/*
	 * target hw version/revision would only be retrieved after firmware
	 * donwload
	 */
	hif_get_hw_info(hif_sc, &hdd_ctx->target_hw_version,
			&hdd_ctx->target_hw_revision,
			&hdd_ctx->target_hw_name);

	/* Get the wlan hw/fw version */
	hdd_wlan_get_version(hdd_ctx, NULL, NULL);

	hdd_release_rtnl_lock();
	rtnl_held = false;

	if (hdd_ctx->config->enable_go_cts2self_for_sta)
		sme_set_cts2self_for_p2p_go(hdd_ctx->hHal);

	wlan_hdd_update_11n_mode(hdd_ctx->config);

#ifdef FEATURE_WLAN_AP_AP_ACS_OPTIMIZE
	status = qdf_mc_timer_init(&hdd_ctx->skip_acs_scan_timer,
				   QDF_TIMER_TYPE_SW,
				   hdd_skip_acs_scan_timer_handler,
				   (void *)hdd_ctx);
	if (!QDF_IS_STATUS_SUCCESS(status))
		hdd_err("Failed to init ACS Skip timer");
	qdf_spinlock_create(&hdd_ctx->acs_skip_lock);
#endif

	qdf_mc_timer_init(&hdd_ctx->tdls_source_timer,
			  QDF_TIMER_TYPE_SW,
			  wlan_hdd_change_tdls_mode,
			  hdd_ctx);

	hdd_bus_bandwidth_init(hdd_ctx);

	hdd_lpass_notify_start(hdd_ctx);

	if (hdd_ctx->rps)
		hdd_set_rps_cpu_mask(hdd_ctx);


	if (cds_is_packet_log_enabled())
		hdd_pktlog_enable_disable(hdd_ctx, true, 0, 0);

	ret = hdd_register_notifiers(hdd_ctx);
	if (ret)
		goto err_debugfs_exit;

	status = wlansap_global_init();
	if (QDF_IS_STATUS_ERROR(status))
		goto err_debugfs_exit;

	hdd_runtime_suspend_context_init(hdd_ctx);
	memdump_init();
	hdd_driver_memdump_init();

	if (hdd_enable_egap(hdd_ctx))
		hdd_err("enhance green ap is not enabled");

	if (hdd_ctx->config->fIsImpsEnabled)
		hdd_set_idle_ps_config(hdd_ctx, true);

	if (hdd_ctx->config->sifs_burst_duration) {
		set_value = (SIFS_BURST_DUR_MULTIPLIER) *
			hdd_ctx->config->sifs_burst_duration;

		if ((set_value > 0) && (set_value <= SIFS_BURST_DUR_MAX))
			wma_cli_set_command(0, (int)WMI_PDEV_PARAM_BURST_DUR,
					    set_value, PDEV_CMD);
	}

	qdf_mc_timer_start(&hdd_ctx->iface_change_timer,
			   hdd_ctx->config->iface_change_wait_time * 5000);

	if (hdd_ctx->config->goptimize_chan_avoid_event) {
		status = sme_enable_disable_chanavoidind_event(
							hdd_ctx->hHal, 0);
		if (!QDF_IS_STATUS_SUCCESS(status))
			hdd_err("Failed to disable Chan Avoidance Indication");
	}
	goto success;

err_debugfs_exit:
	hdd_debugfs_exit(adapter);

err_close_adapter:
	hdd_close_all_adapters(hdd_ctx, false);

	if (rtnl_held)
		hdd_release_rtnl_lock();

err_ipa_cleanup:
	hdd_ipa_cleanup(hdd_ctx);

err_wiphy_unregister:
	wiphy_unregister(hdd_ctx->wiphy);

err_stop_modules:
	hdd_wlan_stop_modules(hdd_ctx);


	status = cds_sched_close(hdd_ctx->pcds_context);
	if (!QDF_IS_STATUS_SUCCESS(status)) {
		hdd_alert("Failed to close CDS Scheduler");
		QDF_ASSERT(QDF_IS_STATUS_SUCCESS(status));
	}

err_exit_nl_srv:
	hdd_green_ap_deinit(hdd_ctx);
	hdd_exit_netlink_services(hdd_ctx);

	cds_deinit_ini_config();
err_hdd_free_context:
	qdf_mc_timer_destroy(&hdd_ctx->iface_change_timer);
	mutex_destroy(&hdd_ctx->iface_change_lock);
	hdd_context_destroy(hdd_ctx);
	QDF_BUG(1);

	return -EIO;

success:
	EXIT();
	return 0;
}

/**
 * hdd_wlan_update_target_info() - update target type info
 * @hdd_ctx: HDD context
 * @context: hif context
 *
 * Update target info received from firmware in hdd context
 * Return:None
 */

void hdd_wlan_update_target_info(hdd_context_t *hdd_ctx, void *context)
{
	struct hif_target_info *tgt_info = hif_get_target_info_handle(context);

	if (!tgt_info) {
		hdd_err("Target info is Null");
		return;
	}

	hdd_ctx->target_type = tgt_info->target_type;
}

/**
 * hdd_register_cb - Register HDD callbacks.
 * @hdd_ctx: HDD context
 *
 * Register the HDD callbacks to CDS/SME.
 *
 * Return: 0 for success or Error code for failure
 */
int hdd_register_cb(hdd_context_t *hdd_ctx)
{
	QDF_STATUS status;
	int ret = 0;

	ENTER();

	sme_register11d_scan_done_callback(hdd_ctx->hHal, hdd_11d_scan_done);

	sme_register_oem_data_rsp_callback(hdd_ctx->hHal,
					hdd_send_oem_data_rsp_msg);

	status = sme_fw_mem_dump_register_cb(hdd_ctx->hHal,
					     wlan_hdd_cfg80211_fw_mem_dump_cb);
	if (!QDF_IS_STATUS_SUCCESS(status)) {
		hdd_err("Failed to register memdump callback");
		ret = -EINVAL;
		return ret;
	}
	sme_register_mgmt_frame_ind_callback(hdd_ctx->hHal,
					     hdd_indicate_mgmt_frame);
	sme_set_tsfcb(hdd_ctx->hHal, hdd_get_tsf_cb, hdd_ctx);
	sme_nan_register_callback(hdd_ctx->hHal,
				  wlan_hdd_cfg80211_nan_callback);
	sme_stats_ext_register_callback(hdd_ctx->hHal,
					wlan_hdd_cfg80211_stats_ext_callback);

	sme_ext_scan_register_callback(hdd_ctx->hHal,
				       wlan_hdd_cfg80211_extscan_callback);

	status = cds_register_sap_restart_channel_switch_cb(
			(void *)hdd_sap_restart_with_channel_switch);
	if (!QDF_IS_STATUS_SUCCESS(status)) {
		hdd_err("restart cb registration failed");
		ret = -EINVAL;
		return ret;
	}

	sme_set_rssi_threshold_breached_cb(hdd_ctx->hHal,
				hdd_rssi_threshold_breached);

	status = sme_bpf_offload_register_callback(hdd_ctx->hHal,
						   hdd_get_bpf_offload_cb);
	if (!QDF_IS_STATUS_SUCCESS(status)) {
		hdd_err("set bpf offload callback failed");
		ret = -EINVAL;
		return ret;
	}

	sme_set_link_layer_stats_ind_cb(hdd_ctx->hHal,
				wlan_hdd_cfg80211_link_layer_stats_callback);

	status = sme_set_lost_link_info_cb(hdd_ctx->hHal,
					   hdd_lost_link_info_cb);
	/* print error and not block the startup process */
	if (!QDF_IS_STATUS_SUCCESS(status))
		hdd_err("set lost link info callback failed");

	wlan_hdd_dcc_register_for_dcc_stats_event(hdd_ctx);

	EXIT();

	return ret;
}

/**
 * hdd_deregister_cb() - De-Register HDD callbacks.
 * @hdd_ctx: HDD context
 *
 * De-Register the HDD callbacks to CDS/SME.
 *
 * Return: void
 */
void hdd_deregister_cb(hdd_context_t *hdd_ctx)
{
	QDF_STATUS status;

	ENTER();

	status = sme_deregister_for_dcc_stats_event(hdd_ctx->hHal);
	if (!QDF_IS_STATUS_SUCCESS(status))
		hdd_err("De-register of dcc stats callback failed: %d",
			status);

	sme_reset_link_layer_stats_ind_cb(hdd_ctx->hHal);
	status = sme_bpf_offload_deregister_callback(hdd_ctx->hHal);
	if (!QDF_IS_STATUS_SUCCESS(status))
		hdd_err("De-register bpf offload callback failed: %d",
			status);
	sme_reset_rssi_threshold_breached_cb(hdd_ctx->hHal);

	status = cds_deregister_sap_restart_channel_switch_cb();
	if (!QDF_IS_STATUS_SUCCESS(status))
		hdd_err("De-register restart cb registration failed: %d",
			status);

	sme_stats_ext_register_callback(hdd_ctx->hHal,
					wlan_hdd_cfg80211_stats_ext_callback);

	sme_nan_deregister_callback(hdd_ctx->hHal);
	status = sme_reset_tsfcb(hdd_ctx->hHal);
	if (!QDF_IS_STATUS_SUCCESS(status))
		hdd_err("Failed to de-register tsfcb the callback:%d",
			status);
	status = sme_fw_mem_dump_unregister_cb(hdd_ctx->hHal);
	if (!QDF_IS_STATUS_SUCCESS(status))
		hdd_err("Failed to de-register the fw mem dump callback: %d",
			status);

	sme_deregister_oem_data_rsp_callback(hdd_ctx->hHal);
	sme_deregister11d_scan_done_callback(hdd_ctx->hHal);

	EXIT();
}

/**
 * hdd_softap_sta_deauth() - handle deauth req from HDD
 * @adapter:	Pointer to the HDD
 * @enable:	bool value
 *
 * This to take counter measure to handle deauth req from HDD
 *
 * Return: None
 */
QDF_STATUS hdd_softap_sta_deauth(hdd_adapter_t *adapter,
				 struct tagCsrDelStaParams *pDelStaParams)
{
	QDF_STATUS qdf_status = QDF_STATUS_E_FAULT;

	ENTER();

	hdd_notice("hdd_softap_sta_deauth:(%p, false)",
	       (WLAN_HDD_GET_CTX(adapter))->pcds_context);

	/* Ignore request to deauth bcmc station */
	if (pDelStaParams->peerMacAddr.bytes[0] & 0x1)
		return qdf_status;

	qdf_status =
		wlansap_deauth_sta(WLAN_HDD_GET_SAP_CTX_PTR(adapter),
				   pDelStaParams);

	EXIT();
	return qdf_status;
}

/**
 * hdd_softap_sta_disassoc() - take counter measure to handle deauth req from HDD
 * @adapter:	Pointer to the HDD
 * @p_del_sta_params: pointer to station deletion parameters
 *
 * This to take counter measure to handle deauth req from HDD
 *
 * Return: None
 */
void hdd_softap_sta_disassoc(hdd_adapter_t *adapter,
			     struct tagCsrDelStaParams *pDelStaParams)
{
	ENTER();

	hdd_err("hdd_softap_sta_disassoc:(%p, false)",
	       (WLAN_HDD_GET_CTX(adapter))->pcds_context);

	/* Ignore request to disassoc bcmc station */
	if (pDelStaParams->peerMacAddr.bytes[0] & 0x1)
		return;

	wlansap_disassoc_sta(WLAN_HDD_GET_SAP_CTX_PTR(adapter),
			     pDelStaParams);
}

void hdd_softap_tkip_mic_fail_counter_measure(hdd_adapter_t *adapter,
					      bool enable)
{
	ENTER();

	hdd_err("hdd_softap_tkip_mic_fail_counter_measure:(%p, false)",
	       (WLAN_HDD_GET_CTX(adapter))->pcds_context);

	wlansap_set_counter_measure(WLAN_HDD_GET_SAP_CTX_PTR(adapter),
				    (bool) enable);
}

/**
 * hdd_issta_p2p_clientconnected() - check if sta or p2p client is connected
 * @hdd_ctx:	HDD Context
 *
 * API to find if there is any STA or P2P-Client is connected
 *
 * Return: true if connected; false otherwise
 */
QDF_STATUS hdd_issta_p2p_clientconnected(hdd_context_t *hdd_ctx)
{
	return sme_is_sta_p2p_client_connected(hdd_ctx->hHal);
}

/**
 * wlan_hdd_disable_roaming() - disable roaming on all STAs except the input one
 * @adapter:	HDD adapter pointer
 *
 * This function loop through each adapter and disable roaming on each STA
 * device mode except the input adapter.
 *
 * Note: On the input adapter roaming is not enabled yet hence no need to
 *       disable.
 *
 * Return: None
 */
void wlan_hdd_disable_roaming(hdd_adapter_t *adapter)
{
	hdd_context_t *hdd_ctx = WLAN_HDD_GET_CTX(adapter);
	hdd_adapter_t *adapterIdx = NULL;
	hdd_adapter_list_node_t *adapterNode = NULL;
	hdd_adapter_list_node_t *pNext = NULL;
	QDF_STATUS status;

	if (hdd_ctx->config->isFastRoamIniFeatureEnabled &&
	    hdd_ctx->config->isRoamOffloadScanEnabled &&
	    QDF_STA_MODE == adapter->device_mode &&
	    cds_is_sta_active_connection_exists()) {
		hdd_notice("Connect received on STA sessionId(%d)",
		       adapter->sessionId);
		/*
		 * Loop through adapter and disable roaming for each STA device
		 * mode except the input adapter.
		 */
		status = hdd_get_front_adapter(hdd_ctx, &adapterNode);

		while (NULL != adapterNode && QDF_STATUS_SUCCESS == status) {
			adapterIdx = adapterNode->pAdapter;

			if (QDF_STA_MODE == adapterIdx->device_mode
			    && adapter->sessionId != adapterIdx->sessionId) {
				hdd_notice("Disable Roaming on sessionId(%d)",
				       adapterIdx->sessionId);
				sme_stop_roaming(WLAN_HDD_GET_HAL_CTX
							 (adapterIdx),
						 adapterIdx->sessionId, 0);
			}

			status = hdd_get_next_adapter(hdd_ctx,
						      adapterNode,
						      &pNext);
			adapterNode = pNext;
		}
	}
}

/**
 * wlan_hdd_enable_roaming() - enable roaming on all STAs except the input one
 * @adapter:	HDD adapter pointer
 *
 * This function loop through each adapter and enable roaming on each STA
 * device mode except the input adapter.
 * Note: On the input adapter no need to enable roaming because link got
 *       disconnected on this.
 *
 * Return: None
 */
void wlan_hdd_enable_roaming(hdd_adapter_t *adapter)
{
	hdd_context_t *hdd_ctx = WLAN_HDD_GET_CTX(adapter);
	hdd_adapter_t *adapterIdx = NULL;
	hdd_adapter_list_node_t *adapterNode = NULL;
	hdd_adapter_list_node_t *pNext = NULL;
	QDF_STATUS status;

	if (hdd_ctx->config->isFastRoamIniFeatureEnabled &&
	    hdd_ctx->config->isRoamOffloadScanEnabled &&
	    QDF_STA_MODE == adapter->device_mode &&
	    cds_is_sta_active_connection_exists()) {
		hdd_notice("Disconnect received on STA sessionId(%d)",
		       adapter->sessionId);
		/*
		 * Loop through adapter and enable roaming for each STA device
		 * mode except the input adapter.
		 */
		status = hdd_get_front_adapter(hdd_ctx, &adapterNode);

		while (NULL != adapterNode && QDF_STATUS_SUCCESS == status) {
			adapterIdx = adapterNode->pAdapter;

			if (QDF_STA_MODE == adapterIdx->device_mode
			    && adapter->sessionId != adapterIdx->sessionId) {
				hdd_notice("Enabling Roaming on sessionId(%d)",
				       adapterIdx->sessionId);
				sme_start_roaming(WLAN_HDD_GET_HAL_CTX
							  (adapterIdx),
						  adapterIdx->sessionId,
						  REASON_CONNECT);
			}

			status = hdd_get_next_adapter(hdd_ctx,
						      adapterNode,
						      &pNext);
			adapterNode = pNext;
		}
	}
}

void wlan_hdd_send_svc_nlink_msg(int radio, int type, void *data, int len)
{
	struct sk_buff *skb;
	struct nlmsghdr *nlh;
	tAniMsgHdr *ani_hdr;
	void *nl_data = NULL;
	int flags = GFP_KERNEL;
	struct radio_index_tlv *radio_info;
	int tlv_len;

	if (in_interrupt() || irqs_disabled() || in_atomic())
		flags = GFP_ATOMIC;

	skb = alloc_skb(NLMSG_SPACE(WLAN_NL_MAX_PAYLOAD), flags);

	if (skb == NULL) {
		hdd_err("alloc_skb failed");
		return;
	}

	nlh = (struct nlmsghdr *)skb->data;
	nlh->nlmsg_pid = 0;     /* from kernel */
	nlh->nlmsg_flags = 0;
	nlh->nlmsg_seq = 0;
	nlh->nlmsg_type = WLAN_NL_MSG_SVC;

	ani_hdr = NLMSG_DATA(nlh);
	ani_hdr->type = type;

	switch (type) {
	case WLAN_SVC_FW_CRASHED_IND:
	case WLAN_SVC_FW_SHUTDOWN_IND:
	case WLAN_SVC_LTE_COEX_IND:
	case WLAN_SVC_WLAN_AUTO_SHUTDOWN_IND:
	case WLAN_SVC_WLAN_AUTO_SHUTDOWN_CANCEL_IND:
		ani_hdr->length = 0;
		nlh->nlmsg_len = NLMSG_LENGTH((sizeof(tAniMsgHdr)));
		skb_put(skb, NLMSG_SPACE(sizeof(tAniMsgHdr)));
		break;
	case WLAN_SVC_WLAN_STATUS_IND:
	case WLAN_SVC_WLAN_VERSION_IND:
	case WLAN_SVC_DFS_CAC_START_IND:
	case WLAN_SVC_DFS_CAC_END_IND:
	case WLAN_SVC_DFS_RADAR_DETECT_IND:
	case WLAN_SVC_DFS_ALL_CHANNEL_UNAVAIL_IND:
	case WLAN_SVC_WLAN_TP_IND:
	case WLAN_SVC_WLAN_TP_TX_IND:
	case WLAN_SVC_RPS_ENABLE_IND:
		ani_hdr->length = len;
		nlh->nlmsg_len = NLMSG_LENGTH((sizeof(tAniMsgHdr) + len));
		nl_data = (char *)ani_hdr + sizeof(tAniMsgHdr);
		memcpy(nl_data, data, len);
		skb_put(skb, NLMSG_SPACE(sizeof(tAniMsgHdr) + len));
		break;

	default:
		hdd_err("WLAN SVC: Attempt to send unknown nlink message %d",
		       type);
		kfree_skb(skb);
		return;
	}

	/*
	 * Add radio index at the end of the svc event in TLV format
	 * to maintain the backward compatibility with userspace
	 * applications.
	 */

	tlv_len = 0;

	if ((sizeof(*ani_hdr) + len + sizeof(struct radio_index_tlv))
		< WLAN_NL_MAX_PAYLOAD) {
		radio_info  = (struct radio_index_tlv *)((char *) ani_hdr +
		sizeof(*ani_hdr) + len);
		radio_info->type = (unsigned short) WLAN_SVC_WLAN_RADIO_INDEX;
		radio_info->length = (unsigned short) sizeof(radio_info->radio);
		radio_info->radio = radio;
		tlv_len = sizeof(*radio_info);
		QDF_TRACE(QDF_MODULE_ID_HDD, QDF_TRACE_LEVEL_INFO,
			"Added radio index tlv - radio index %d",
			radio_info->radio);
	}

	nlh->nlmsg_len += tlv_len;
	skb_put(skb, NLMSG_SPACE(sizeof(tAniMsgHdr) + len + tlv_len));

	nl_srv_bcast(skb);

	return;
}

#ifdef FEATURE_WLAN_AUTO_SHUTDOWN
void wlan_hdd_auto_shutdown_cb(void)
{
	hdd_context_t *hdd_ctx = cds_get_global_context();

	if (!hdd_ctx)
		return;

	hdd_err("Wlan Idle. Sending Shutdown event..");
	wlan_hdd_send_svc_nlink_msg(hdd_ctx->radio_index,
			WLAN_SVC_WLAN_AUTO_SHUTDOWN_IND, NULL, 0);
}

void wlan_hdd_auto_shutdown_enable(hdd_context_t *hdd_ctx, bool enable)
{
	hdd_adapter_list_node_t *adapterNode = NULL, *pNext = NULL;
	QDF_STATUS status;
	hdd_adapter_t *adapter;
	bool ap_connected = false, sta_connected = false;
	tHalHandle hal_handle;

	hal_handle = hdd_ctx->hHal;
	if (hal_handle == NULL)
		return;

	if (hdd_ctx->config->WlanAutoShutdown == 0)
		return;

	if (enable == false) {
		if (sme_set_auto_shutdown_timer(hal_handle, 0) !=
							QDF_STATUS_SUCCESS) {
			hdd_err("Failed to stop wlan auto shutdown timer");
		}
		wlan_hdd_send_svc_nlink_msg(hdd_ctx->radio_index,
			WLAN_SVC_WLAN_AUTO_SHUTDOWN_CANCEL_IND, NULL, 0);
		return;
	}

	/* To enable shutdown timer check conncurrency */
	if (cds_concurrent_open_sessions_running()) {
		status = hdd_get_front_adapter(hdd_ctx, &adapterNode);

		while (NULL != adapterNode && QDF_STATUS_SUCCESS == status) {
			adapter = adapterNode->pAdapter;
			if (adapter
			    && adapter->device_mode ==
			    QDF_STA_MODE) {
				if (WLAN_HDD_GET_STATION_CTX_PTR(adapter)->
				    conn_info.connState ==
				    eConnectionState_Associated) {
					sta_connected = true;
					break;
				}
			}
			if (adapter
			    && adapter->device_mode == QDF_SAP_MODE) {
				if (WLAN_HDD_GET_AP_CTX_PTR(adapter)->
				    bApActive == true) {
					ap_connected = true;
					break;
				}
			}
			status = hdd_get_next_adapter(hdd_ctx,
						      adapterNode,
						      &pNext);
			adapterNode = pNext;
		}
	}

	if (ap_connected == true || sta_connected == true) {
		hdd_notice("CC Session active. Shutdown timer not enabled");
		return;
	} else {
		if (sme_set_auto_shutdown_timer(hal_handle,
						hdd_ctx->config->
						WlanAutoShutdown)
		    != QDF_STATUS_SUCCESS)
			hdd_err("Failed to start wlan auto shutdown timer");
		else
			hdd_notice("Auto Shutdown timer for %d seconds enabled",
			       hdd_ctx->config->WlanAutoShutdown);

	}
}
#endif

hdd_adapter_t *hdd_get_con_sap_adapter(hdd_adapter_t *this_sap_adapter,
							bool check_start_bss)
{
	hdd_context_t *hdd_ctx = WLAN_HDD_GET_CTX(this_sap_adapter);
	hdd_adapter_t *adapter, *con_sap_adapter;
	QDF_STATUS status = QDF_STATUS_SUCCESS;
	hdd_adapter_list_node_t *adapterNode = NULL, *pNext = NULL;

	con_sap_adapter = NULL;

	status = hdd_get_front_adapter(hdd_ctx, &adapterNode);
	while (NULL != adapterNode && QDF_STATUS_SUCCESS == status) {
		adapter = adapterNode->pAdapter;
		if (adapter && ((adapter->device_mode == QDF_SAP_MODE) ||
				(adapter->device_mode == QDF_P2P_GO_MODE)) &&
						adapter != this_sap_adapter) {
			if (check_start_bss) {
				if (test_bit(SOFTAP_BSS_STARTED,
						&adapter->event_flags)) {
					con_sap_adapter = adapter;
					break;
				}
			} else {
				con_sap_adapter = adapter;
				break;
			}
		}
		status = hdd_get_next_adapter(hdd_ctx, adapterNode, &pNext);
		adapterNode = pNext;
	}

	return con_sap_adapter;
}

#ifdef MSM_PLATFORM
void hdd_start_bus_bw_compute_timer(hdd_adapter_t *adapter)
{
	hdd_context_t *hdd_ctx = WLAN_HDD_GET_CTX(adapter);

	if (hdd_ctx->bus_bw_timer_started)
		return;

	hdd_ctx->bus_bw_timer_started = true;
	qdf_timer_start(&hdd_ctx->bus_bw_timer,
			   hdd_ctx->config->busBandwidthComputeInterval);
}

void hdd_stop_bus_bw_compute_timer(hdd_adapter_t *adapter)
{
	hdd_adapter_list_node_t *adapterNode = NULL, *pNext = NULL;
	QDF_STATUS status;
	bool can_stop = true;
	hdd_context_t *hdd_ctx = WLAN_HDD_GET_CTX(adapter);

	if (!hdd_ctx->bus_bw_timer_started) {
		/* trying to stop timer, when not running is not good */
		hdd_info("bus band width compute timer is not running");
		return;
	}

	if (cds_concurrent_open_sessions_running()) {
		status = hdd_get_front_adapter(hdd_ctx, &adapterNode);

		while (NULL != adapterNode && QDF_STATUS_SUCCESS == status) {
			adapter = adapterNode->pAdapter;
			if (adapter
			    && (adapter->device_mode == QDF_STA_MODE
				|| adapter->device_mode == QDF_P2P_CLIENT_MODE)
			    && WLAN_HDD_GET_STATION_CTX_PTR(adapter)->
			    conn_info.connState ==
			    eConnectionState_Associated) {
				can_stop = false;
				break;
			}
			if (adapter
			    && (adapter->device_mode == QDF_SAP_MODE
				|| adapter->device_mode == QDF_P2P_GO_MODE)
			    && WLAN_HDD_GET_AP_CTX_PTR(adapter)->bApActive ==
			    true) {
				can_stop = false;
				break;
			}
			status = hdd_get_next_adapter(hdd_ctx,
						      adapterNode,
						      &pNext);
			adapterNode = pNext;
		}
	}

	if (can_stop == true) {
		/* reset the ipa perf level */
		hdd_ipa_set_perf_level(hdd_ctx, 0, 0);
		qdf_timer_stop(&hdd_ctx->bus_bw_timer);
		hdd_ctx->bus_bw_timer_started = false;
		hdd_reset_tcp_delack(hdd_ctx);
	}
}
#endif

/**
 * wlan_hdd_check_custom_con_channel_rules() - This function checks the sap's
 *                                            and sta's operating channel.
 * @sta_adapter:  Describe the first argument to foobar.
 * @ap_adapter:   Describe the second argument to foobar.
 * @roam_profile: Roam profile of AP to which STA wants to connect.
 * @concurrent_chnl_same: If both SAP and STA channels are same then
 *                        set this flag to true else false.
 *
 * This function checks the sap's operating channel and sta's operating channel.
 * if both are same then it will return false else it will restart the sap in
 * sta's channel and return true.
 *
 * Return: QDF_STATUS_SUCCESS or QDF_STATUS_E_FAILURE.
 */
QDF_STATUS wlan_hdd_check_custom_con_channel_rules(hdd_adapter_t *sta_adapter,
						  hdd_adapter_t *ap_adapter,
						  tCsrRoamProfile *roam_profile,
						  tScanResultHandle *scan_cache,
						  bool *concurrent_chnl_same)
{
	hdd_ap_ctx_t *hdd_ap_ctx;
	uint8_t channel_id;
	QDF_STATUS status;
	enum tQDF_ADAPTER_MODE device_mode = ap_adapter->device_mode;
	*concurrent_chnl_same = true;

	hdd_ap_ctx = WLAN_HDD_GET_AP_CTX_PTR(ap_adapter);
	status =
	 sme_get_ap_channel_from_scan_cache(WLAN_HDD_GET_HAL_CTX(sta_adapter),
					    roam_profile,
					    scan_cache,
					    &channel_id);
	if ((QDF_STATUS_SUCCESS == status)) {
		if ((QDF_SAP_MODE == device_mode) &&
			(channel_id < SIR_11A_CHANNEL_BEGIN)) {
			if (hdd_ap_ctx->operatingChannel != channel_id) {
				*concurrent_chnl_same = false;
				hdd_info("channels are different");
			}
		} else if ((QDF_P2P_GO_MODE == device_mode) &&
				(channel_id >= SIR_11A_CHANNEL_BEGIN)) {
			if (hdd_ap_ctx->operatingChannel != channel_id) {
				*concurrent_chnl_same = false;
				hdd_info("channels are different");
			}
		}
	} else {
		/*
		 * Lets handle worst case scenario here, Scan cache lookup is
		 * failed so we have to stop the SAP to avoid any channel
		 * discrepancy  between SAP's channel and STA's channel.
		 * Return the status as failure so caller function could know
		 * that scan look up is failed.
		 */
		hdd_err("Finding AP from scan cache failed");
		return QDF_STATUS_E_FAILURE;
	}
	return QDF_STATUS_SUCCESS;
}

/**
 * wlan_hdd_stop_sap() - This function stops bss of SAP.
 * @ap_adapter: SAP adapter
 *
 * This function will process the stopping of sap adapter.
 *
 * Return: None
 */
void wlan_hdd_stop_sap(hdd_adapter_t *ap_adapter)
{
	hdd_ap_ctx_t *hdd_ap_ctx;
	hdd_hostapd_state_t *hostapd_state;
	QDF_STATUS qdf_status;
	hdd_context_t *hdd_ctx;

	if (NULL == ap_adapter) {
		hdd_err("ap_adapter is NULL here");
		return;
	}

	hdd_ap_ctx = WLAN_HDD_GET_AP_CTX_PTR(ap_adapter);
	hdd_ctx = WLAN_HDD_GET_CTX(ap_adapter);
	if (wlan_hdd_validate_context(hdd_ctx))
		return;

	mutex_lock(&hdd_ctx->sap_lock);
	if (test_bit(SOFTAP_BSS_STARTED, &ap_adapter->event_flags)) {
		wlan_hdd_del_station(ap_adapter);
		hdd_cleanup_actionframe(hdd_ctx, ap_adapter);
		hostapd_state = WLAN_HDD_GET_HOSTAP_STATE_PTR(ap_adapter);
		hdd_info("Now doing SAP STOPBSS");
		qdf_event_reset(&hostapd_state->qdf_stop_bss_event);
		if (QDF_STATUS_SUCCESS == wlansap_stop_bss(hdd_ap_ctx->
							sapContext)) {
			qdf_status = qdf_wait_single_event(&hostapd_state->
					qdf_stop_bss_event,
					SME_CMD_TIMEOUT_VALUE);
			if (!QDF_IS_STATUS_SUCCESS(qdf_status)) {
				mutex_unlock(&hdd_ctx->sap_lock);
				hdd_err("SAP Stop Failed");
				return;
			}
		}
		clear_bit(SOFTAP_BSS_STARTED, &ap_adapter->event_flags);
		cds_decr_session_set_pcl(ap_adapter->device_mode,
						ap_adapter->sessionId);
		hdd_info("SAP Stop Success");
	} else {
		hdd_err("Can't stop ap because its not started");
	}
	mutex_unlock(&hdd_ctx->sap_lock);
	return;
}

/**
 * wlan_hdd_start_sap() - this function starts bss of SAP.
 * @ap_adapter: SAP adapter
 *
 * This function will process the starting of sap adapter.
 *
 * Return: None
 */
void wlan_hdd_start_sap(hdd_adapter_t *ap_adapter)
{
	hdd_ap_ctx_t *hdd_ap_ctx;
	hdd_hostapd_state_t *hostapd_state;
	QDF_STATUS qdf_status;
	hdd_context_t *hdd_ctx;
	tsap_Config_t *sap_config;

	if (NULL == ap_adapter) {
		hdd_err("ap_adapter is NULL here");
		return;
	}

	if (QDF_SAP_MODE != ap_adapter->device_mode) {
		hdd_err("SoftAp role has not been enabled");
		return;
	}

	hdd_ctx = WLAN_HDD_GET_CTX(ap_adapter);
	hdd_ap_ctx = WLAN_HDD_GET_AP_CTX_PTR(ap_adapter);
	hostapd_state = WLAN_HDD_GET_HOSTAP_STATE_PTR(ap_adapter);
	sap_config = &ap_adapter->sessionCtx.ap.sapConfig;

	if (wlan_hdd_validate_context(hdd_ctx))
		return;

	mutex_lock(&hdd_ctx->sap_lock);
	if (test_bit(SOFTAP_BSS_STARTED, &ap_adapter->event_flags))
		goto end;

	if (0 != wlan_hdd_cfg80211_update_apies(ap_adapter)) {
		hdd_err("SAP Not able to set AP IEs");
		wlansap_reset_sap_config_add_ie(sap_config, eUPDATE_IE_ALL);
		goto end;
	}

	qdf_event_reset(&hostapd_state->qdf_event);
	if (wlansap_start_bss(hdd_ap_ctx->sapContext, hdd_hostapd_sap_event_cb,
			      &hdd_ap_ctx->sapConfig,
			      ap_adapter->dev)
			      != QDF_STATUS_SUCCESS)
		goto end;

	hdd_info("Waiting for SAP to start");
	qdf_status = qdf_wait_single_event(&hostapd_state->qdf_event,
					SME_CMD_TIMEOUT_VALUE);
	if (!QDF_IS_STATUS_SUCCESS(qdf_status)) {
		hdd_err("SAP Start failed");
		goto end;
	}
	hdd_info("SAP Start Success");
	set_bit(SOFTAP_BSS_STARTED, &ap_adapter->event_flags);
	if (hostapd_state->bssState == BSS_START)
		cds_incr_active_session(ap_adapter->device_mode,
					ap_adapter->sessionId);
	hostapd_state->bCommit = true;

end:
	mutex_unlock(&hdd_ctx->sap_lock);
	return;
}

/**
 * wlan_hdd_soc_set_antenna_mode_cb() - Callback for set dual
 * mac scan config
 * @status: Status of set antenna mode
 *
 * Callback on setting the dual mac configuration
 *
 * Return: None
 */
void wlan_hdd_soc_set_antenna_mode_cb(
	enum set_antenna_mode_status status)
{
	hdd_context_t *hdd_ctx;

	hdd_info("Status: %d", status);

	hdd_ctx = cds_get_context(QDF_MODULE_ID_HDD);
	if (0 != wlan_hdd_validate_context(hdd_ctx))
		return;

	/* Signal the completion of set dual mac config */
	complete(&hdd_ctx->set_antenna_mode_cmpl);
}

/**
 * hdd_get_fw_version() - Get FW version
 * @hdd_ctx:     pointer to HDD context.
 * @major_spid:  FW version - major spid.
 * @minor_spid:  FW version - minor spid
 * @ssid:        FW version - ssid
 * @crmid:       FW version - crmid
 *
 * This function is called to get the firmware build version stored
 * as part of the HDD context
 *
 * Return:   None
 */
void hdd_get_fw_version(hdd_context_t *hdd_ctx,
			uint32_t *major_spid, uint32_t *minor_spid,
			uint32_t *siid, uint32_t *crmid)
{
	*major_spid = (hdd_ctx->target_fw_version & 0xf0000000) >> 28;
	*minor_spid = (hdd_ctx->target_fw_version & 0xf000000) >> 24;
	*siid = (hdd_ctx->target_fw_version & 0xf00000) >> 20;
	*crmid = hdd_ctx->target_fw_version & 0x7fff;
}

#ifdef QCA_CONFIG_SMP
/**
 * wlan_hdd_get_cpu() - get cpu_index
 *
 * Return: cpu_index
 */
int wlan_hdd_get_cpu(void)
{
	int cpu_index = get_cpu();
	put_cpu();
	return cpu_index;
}
#endif

/**
 * hdd_get_fwpath() - get framework path
 *
 * This function is used to get the string written by
 * userspace to start the wlan driver
 *
 * Return: string
 */
const char *hdd_get_fwpath(void)
{
	return fwpath.string;
}

/**
 * hdd_init() - Initialize Driver
 *
 * This function initilizes CDS global context with the help of cds_init. This
 * has to be the first function called after probe to get a valid global
 * context.
 *
 * Return: 0 for success, errno on failure
 */
int hdd_init(void)
{
	v_CONTEXT_t p_cds_context = NULL;
	int ret = 0;

#ifdef WLAN_LOGGING_SOCK_SVC_ENABLE
	wlan_logging_sock_init_svc();
#endif
	p_cds_context = cds_init();

	if (p_cds_context == NULL) {
		hdd_alert("Failed to allocate CDS context");
		ret = -ENOMEM;
		goto err_out;
	}

	hdd_trace_init();
	hdd_register_debug_callback();

err_out:
	return ret;
}

/**
 * hdd_deinit() - Deinitialize Driver
 *
 * This function frees CDS global context with the help of cds_deinit. This
 * has to be the last function call in remove callback to free the global
 * context.
 */
void hdd_deinit(void)
{
	cds_deinit();

#ifdef WLAN_LOGGING_SOCK_SVC_ENABLE
	wlan_logging_sock_deinit_svc();
#endif
}

#ifdef QCA_WIFI_3_0_ADRASTEA
#define HDD_WLAN_START_WAIT_TIME (3600 * 1000)
#else
#define HDD_WLAN_START_WAIT_TIME (CDS_WMA_TIMEOUT + 5000)
#endif

/**
 * __hdd_module_init - Module init helper
 *
 * Module init helper function used by both module and static driver.
 *
 * Return: 0 for success, errno on failure
 */
static int __hdd_module_init(void)
{
	int ret = 0;

	pr_err("%s: Loading driver v%s\n", WLAN_MODULE_NAME,
		QWLAN_VERSIONSTR TIMER_MANAGER_STR MEMORY_DEBUG_STR);

	pld_init();

	ret = hdd_init();
	if (ret) {
		pr_err("hdd_init failed %x\n", ret);
		goto err_hdd_init;
	}

	dispatcher_init();

	qdf_wake_lock_create(&wlan_wake_lock, "wlan");

	hdd_set_conparam((uint32_t) con_mode);

	ret = wlan_hdd_register_driver();
	if (ret) {
		pr_err("%s: driver load failure, err %d\n", WLAN_MODULE_NAME,
			ret);
		goto out;
	}

	pr_info("%s: driver loaded\n", WLAN_MODULE_NAME);

	return 0;
out:
	qdf_wake_lock_destroy(&wlan_wake_lock);
	dispatcher_deinit();
	hdd_deinit();

err_hdd_init:
	pld_deinit();

	return ret;
}

/**
 * hdd_wait_for_recovery_completion() - Wait for cds recovery completion
 *
 * Block the unloading of the driver until the cds recovery is completed
 *
 * Return: None
 */
static void hdd_wait_for_recovery_completion(void)
{
	int retry = 0;

	/* Wait for recovery to complete */
	while (cds_is_driver_recovering()) {
		hdd_alert("Recovery in progress; wait here!!!");
		msleep(1000);
		if (retry++ == HDD_MOD_EXIT_SSR_MAX_RETRIES) {
			hdd_alert("SSR never completed, fatal error");
			QDF_BUG(0);
		}
	}
}

/**
 * __hdd_module_exit - Module exit helper
 *
 * Module exit helper function used by both module and static driver.
 */
static void __hdd_module_exit(void)
{
	pr_info("%s: Unloading driver v%s\n", WLAN_MODULE_NAME,
		QWLAN_VERSIONSTR);

	hdd_wait_for_recovery_completion();

	wlan_hdd_unregister_driver();

	qdf_wake_lock_destroy(&wlan_wake_lock);

	dispatcher_deinit();
	hdd_deinit();
	pld_deinit();

	return;
}

#ifndef MODULE
/**
 * wlan_boot_cb() - Wlan boot callback
 * @kobj:      object whose directory we're creating the link in.
 * @attr:      attribute the user is interacting with
 * @buff:      the buffer containing the user data
 * @count:     number of bytes in the buffer
 *
 * This callback is invoked when the fs is ready to start the
 * wlan driver initialization.
 *
 * Return: 'count' on success or a negative error code in case of failure
 */
static ssize_t wlan_boot_cb(struct kobject *kobj,
				struct kobj_attribute *attr,
				const char *buf,
				size_t count)
{

	int ret = 0;

	if (wlan_loader->loaded_state) {
		pr_info("Wlan driver already initialized");
		return 0;
	}


	pr_err("%s: Loading driver v%s\n", WLAN_MODULE_NAME,
		QWLAN_VERSIONSTR TIMER_MANAGER_STR MEMORY_DEBUG_STR);

	if (__hdd_module_init()) {
		pr_err("%s: Failed to register handler\n", __func__);
		ret = -EINVAL;
	} else
		wlan_loader->loaded_state = MODULE_INITIALIZED;

	return count;

}

/**
 * wlan_init_sysfs() - Creates the sysfs to be invoked when the fs is
 * ready
 *
 * This is creates the syfs entry boot_wlan. Which shall be invoked
 * when the filesystem is ready.
 *
 * Return: 0 for success, errno on failure
 */
static int wlan_init_sysfs(void)
{
	int ret = -EINVAL;

	wlan_loader = kzalloc(sizeof(*wlan_loader), GFP_KERNEL);
	if (!wlan_loader) {
		pr_err("%s: memory alloc failed\n", __func__);
		ret = -ENOMEM;
		return ret;
	}

	wlan_loader->boot_wlan_obj = NULL;
	wlan_loader->attr_group = kzalloc(sizeof(*(wlan_loader->attr_group)),
					  GFP_KERNEL);
	if (!wlan_loader->attr_group) {
		pr_err("%s: malloc attr_group failed\n", __func__);
		ret = -ENOMEM;
		goto error_return;
	}

	wlan_loader->loaded_state = 0;
	wlan_loader->attr_group->attrs = attrs;

	wlan_loader->boot_wlan_obj = kobject_create_and_add("boot_wlan",
							    kernel_kobj);
	if (!wlan_loader->boot_wlan_obj) {
		pr_err("%s: sysfs create and add failed\n", __func__);
		ret = -ENOMEM;
		goto error_return;
	}

	ret = sysfs_create_group(wlan_loader->boot_wlan_obj,
				 wlan_loader->attr_group);
	if (ret) {
		pr_err("%s: sysfs create group failed %d\n", __func__, ret);
		goto error_return;
	}

	return 0;

error_return:

	if (wlan_loader->boot_wlan_obj) {
		kobject_del(wlan_loader->boot_wlan_obj);
		wlan_loader->boot_wlan_obj = NULL;
	}

	return ret;
}

/**
 * wlan_deinit_sysfs() - Removes the sysfs created to initialize the wlan
 *
 * Return: 0 on success or errno on failure
 */
static int wlan_deinit_sysfs(void)
{

	if (!wlan_loader) {
		hdd_alert("wlan loader context is Null!");
		return -EINVAL;
	}

	if (wlan_loader->boot_wlan_obj) {
		sysfs_remove_group(wlan_loader->boot_wlan_obj,
				   wlan_loader->attr_group);
		kobject_del(wlan_loader->boot_wlan_obj);
		wlan_loader->boot_wlan_obj = NULL;
	}

	return 0;
}

#endif

#ifdef MODULE
/**
 * __hdd_module_init - Module init helper
 *
 * Module init helper function used by both module and static driver.
 *
 * Return: 0 for success, errno on failure
 */
static int hdd_module_init(void)
{
	int ret = 0;

	pr_err("%s: Loading driver v%s\n", WLAN_MODULE_NAME,
		QWLAN_VERSIONSTR TIMER_MANAGER_STR MEMORY_DEBUG_STR);

	if (__hdd_module_init()) {
		pr_err("%s: Failed to register handler\n", __func__);
		ret = -EINVAL;
	}

	return ret;
}
#else
static int __init hdd_module_init(void)
{
	int ret = -EINVAL;

	ret = wlan_init_sysfs();
	if (ret)
		pr_err("Failed to create sysfs entry for loading wlan");

	return ret;
}
#endif


#ifdef MODULE
/**
 * hdd_module_exit() - Exit function
 *
 * This is the driver exit point (invoked when module is unloaded using rmmod)
 *
 * Return: None
 */
static void __exit hdd_module_exit(void)
{
	__hdd_module_exit();
}
#else
static void __exit hdd_module_exit(void)
{
	__hdd_module_exit();
	wlan_deinit_sysfs();
}
#endif

static int fwpath_changed_handler(const char *kmessage, struct kernel_param *kp)
{
	return param_set_copystring(kmessage, kp);
}

/**
 * is_con_mode_valid() check con mode is valid or not
 * @mode: global con mode
 *
 * Return: TRUE on success FALSE on failure
 */
static bool is_con_mode_valid(enum tQDF_GLOBAL_CON_MODE mode)
{
	switch (mode) {
	case QDF_GLOBAL_MONITOR_MODE:
	case QDF_GLOBAL_FTM_MODE:
	case QDF_GLOBAL_EPPING_MODE:
	case QDF_GLOBAL_MISSION_MODE:
		return true;
	default:
		return false;
	}
}

/**
 * hdd_get_adpter_mode() - returns adapter mode based on global con mode
 * @mode: global con mode
 *
 * Return: adapter mode
 */
static enum tQDF_ADAPTER_MODE hdd_get_adpter_mode(
					enum tQDF_GLOBAL_CON_MODE mode)
{

	switch (mode) {
	case QDF_GLOBAL_MISSION_MODE:
		return QDF_STA_MODE;
	case QDF_GLOBAL_MONITOR_MODE:
		return QDF_MONITOR_MODE;
	case QDF_GLOBAL_EPPING_MODE:
		return QDF_EPPING_MODE;
	case QDF_GLOBAL_FTM_MODE:
		return QDF_FTM_MODE;
	case QDF_GLOBAL_QVIT_MODE:
		return QDF_QVIT_MODE;
	default:
		return QDF_MAX_NO_OF_MODE;
	}
}

static void hdd_cleanup_present_mode(hdd_context_t *hdd_ctx,
				    enum tQDF_GLOBAL_CON_MODE curr_mode)
{
	switch (curr_mode) {
	case QDF_GLOBAL_MISSION_MODE:
	case QDF_GLOBAL_MONITOR_MODE:
	case QDF_GLOBAL_FTM_MODE:
		hdd_abort_mac_scan_all_adapters(hdd_ctx);
		hdd_stop_all_adapters(hdd_ctx);
		hdd_deinit_all_adapters(hdd_ctx, false);
		hdd_close_all_adapters(hdd_ctx, false);
		break;
	case QDF_GLOBAL_EPPING_MODE:
		epping_disable();
		epping_close();
		break;
	default:
		return;
	}
}

static int hdd_register_req_mode(hdd_context_t *hdd_ctx,
				 enum tQDF_GLOBAL_CON_MODE mode)
{
	hdd_adapter_t *adapter;
	int ret = 0;
	bool rtnl_held;
	qdf_device_t qdf_dev = cds_get_context(QDF_MODULE_ID_QDF_DEVICE);
	QDF_STATUS status;

	if (!qdf_dev) {
		hdd_err("qdf device context is Null return!");
		return -EINVAL;
	}

	rtnl_held = hdd_hold_rtnl_lock();
	switch (mode) {
	case QDF_GLOBAL_MISSION_MODE:
		adapter = hdd_open_interfaces(hdd_ctx, rtnl_held);
		if (IS_ERR(adapter)) {
			hdd_alert("Failed to open interface, adapter is NULL");
			ret = -EINVAL;
		}
		break;
	case QDF_GLOBAL_FTM_MODE:
		adapter = hdd_open_adapter(hdd_ctx, QDF_FTM_MODE, "wlan%d",
					   wlan_hdd_get_intf_addr(hdd_ctx),
					   NET_NAME_UNKNOWN, rtnl_held);
		if (adapter == NULL)
			ret = -EINVAL;
		break;
	case QDF_GLOBAL_MONITOR_MODE:
		adapter = hdd_open_adapter(hdd_ctx, QDF_MONITOR_MODE, "wlan%d",
					   wlan_hdd_get_intf_addr(hdd_ctx),
					   NET_NAME_UNKNOWN, rtnl_held);
		if (adapter == NULL)
			ret = -EINVAL;
		break;
	case QDF_GLOBAL_EPPING_MODE:
		status = epping_open();
		 if (status != QDF_STATUS_SUCCESS) {
			hdd_err("Failed to open in eeping mode: %d", status);
			ret = -EINVAL;
			break;
		}
		ret = epping_enable(qdf_dev->dev);
		if (ret) {
			hdd_err("Failed to enable in epping mode : %d", ret);
			epping_close();
		}
		break;
	default:
		hdd_info("Mode not supported");
		ret = -ENOTSUPP;
		break;
	}
	hdd_release_rtnl_lock();
	rtnl_held = false;
	return ret;
}

/**
 * __con_mode_handler() - Handles module param con_mode change
 * @kmessage: con mode name on which driver to be bring up
 * @kp: The associated kernel parameter
 * @hdd_ctx: Pointer to the global HDD context
 *
 * This function is invoked when user updates con mode using sys entry,
 * to initialize and bring-up driver in that specific mode.
 *
 * Return - 0 on success and failure code on failure
 */
static int __con_mode_handler(const char *kmessage, struct kernel_param *kp,
			      hdd_context_t *hdd_ctx)
{
	int ret;
	hdd_adapter_t *adapter;
	enum tQDF_GLOBAL_CON_MODE curr_mode;
	enum tQDF_ADAPTER_MODE adapter_mode;

	ret = wlan_hdd_validate_context(hdd_ctx);
	if (ret)
		return ret;

	cds_set_load_in_progress(true);

	hdd_info("con_mode handler: %s", kmessage);
	ret = param_set_int(kmessage, kp);



	if (!(is_con_mode_valid(con_mode))) {
		hdd_err("invlaid con_mode %d", con_mode);
		ret = -EINVAL;
		goto reset_flags;
	}

	curr_mode = hdd_get_conparam();
	if (curr_mode == con_mode) {
		hdd_err("curr mode: %d is same as user triggered mode %d",
		       curr_mode, con_mode);
		ret = 0;
		goto reset_flags;
	}

	/* Cleanup present mode before switching to new mode */
	hdd_cleanup_present_mode(hdd_ctx, curr_mode);

	ret = hdd_wlan_stop_modules(hdd_ctx);
	if (ret) {
		hdd_err("Stop wlan modules failed");
		goto reset_flags;
	}

	hdd_set_conparam(con_mode);

	/* Register for new con_mode & then kick_start modules again */
	ret = hdd_register_req_mode(hdd_ctx, con_mode);
	if (ret) {
		hdd_err("Failed to register for new mode");
		goto reset_flags;
	}

	adapter_mode = hdd_get_adpter_mode(con_mode);
	if (adapter_mode == QDF_MAX_NO_OF_MODE) {
		hdd_err("invalid adapter");
		ret = -EINVAL;
		goto reset_flags;
	}

	adapter = hdd_get_adapter(hdd_ctx, adapter_mode);
	if (!adapter) {
		hdd_err("Failed to get adapter:%d", adapter_mode);
		goto reset_flags;
	}

	ret = hdd_wlan_start_modules(hdd_ctx, adapter, false);
	if (ret) {
		hdd_err("Start wlan modules failed: %d", ret);
		goto reset_flags;
	}

	if (con_mode == QDF_GLOBAL_MONITOR_MODE ||
		con_mode == QDF_GLOBAL_FTM_MODE) {
		if (hdd_start_adapter(adapter)) {
			hdd_err("Failed to start %s adapter", kmessage);
			ret = -EINVAL;
			goto reset_flags;
		}
	}

	hdd_info("Mode successfully changed to %s", kmessage);
	ret = 0;

reset_flags:
	cds_set_load_in_progress(false);
	return ret;
}


static int con_mode_handler(const char *kmessage, struct kernel_param *kp)
{
	int ret;
	hdd_context_t *hdd_ctx;

	hdd_ctx = cds_get_context(QDF_MODULE_ID_HDD);
	ret = wlan_hdd_validate_context(hdd_ctx);
	if (ret)
		return ret;

	cds_ssr_protect(__func__);
	ret = __con_mode_handler(kmessage, kp, hdd_ctx);
	cds_ssr_unprotect(__func__);

	return ret;
}

/**
 * hdd_get_conparam() - driver exit point
 *
 * This is the driver exit point (invoked when module is unloaded using rmmod)
 *
 * Return: enum tQDF_GLOBAL_CON_MODE
 */
enum tQDF_GLOBAL_CON_MODE hdd_get_conparam(void)
{
	return (enum tQDF_GLOBAL_CON_MODE) curr_con_mode;
}

void hdd_set_conparam(uint32_t con_param)
{
	curr_con_mode = con_param;
}

/**
 * hdd_clean_up_pre_cac_interface() - Clean up the pre cac interface
 * @hdd_ctx: HDD context
 *
 * Cleans up the pre cac interface, if it exists
 *
 * Return: None
 */
void hdd_clean_up_pre_cac_interface(hdd_context_t *hdd_ctx)
{
	uint8_t session_id;
	QDF_STATUS status;
	struct hdd_adapter_s *precac_adapter;

	status = wlan_sap_get_pre_cac_vdev_id(hdd_ctx->hHal, &session_id);
	if (QDF_IS_STATUS_ERROR(status)) {
		hdd_err("failed to get pre cac vdev id");
		return;
	}

	precac_adapter = hdd_get_adapter_by_vdev(hdd_ctx, session_id);
	if (!precac_adapter) {
		hdd_err("invalid pre cac adapater");
		return;
	}

	qdf_create_work(0, &hdd_ctx->sap_pre_cac_work,
			wlan_hdd_sap_pre_cac_failure,
			(void *)precac_adapter);
	qdf_sched_work(0, &hdd_ctx->sap_pre_cac_work);

}

/**
 * hdd_update_ol_config - API to update ol configuration parameters
 * @hdd_ctx: HDD context
 *
 * Return: void
 */
static void hdd_update_ol_config(hdd_context_t *hdd_ctx)
{
	struct ol_config_info cfg;
	struct ol_context *ol_ctx = cds_get_context(QDF_MODULE_ID_BMI);

	if (!ol_ctx)
		return;

	cfg.enable_self_recovery = hdd_ctx->config->enableSelfRecovery;
	cfg.enable_uart_print = hdd_ctx->config->enablefwprint;
	cfg.enable_fw_log = hdd_ctx->config->enable_fw_log;
	cfg.enable_ramdump_collection = hdd_ctx->config->is_ramdump_enabled;
	cfg.enable_lpass_support = hdd_lpass_is_supported(hdd_ctx);

	ol_init_ini_config(ol_ctx, &cfg);
}

#ifdef FEATURE_RUNTIME_PM
/**
 * hdd_populate_runtime_cfg() - populate runtime configuration
 * @hdd_ctx: hdd context
 * @cfg: pointer to the configuration memory being populated
 *
 * Return: void
 */
static void hdd_populate_runtime_cfg(hdd_context_t *hdd_ctx,
				     struct hif_config_info *cfg)
{
	cfg->enable_runtime_pm = hdd_ctx->config->runtime_pm;
	cfg->runtime_pm_delay = hdd_ctx->config->runtime_pm_delay;
}
#else
static void hdd_populate_runtime_cfg(hdd_context_t *hdd_ctx,
				     struct hif_config_info *cfg)
{
}
#endif

/**
 * hdd_update_hif_config - API to update HIF configuration parameters
 * @hdd_ctx: HDD Context
 *
 * Return: void
 */
static void hdd_update_hif_config(hdd_context_t *hdd_ctx)
{
	struct hif_opaque_softc *scn = cds_get_context(QDF_MODULE_ID_HIF);
	struct hif_config_info cfg;

	if (!scn)
		return;

	cfg.enable_self_recovery = hdd_ctx->config->enableSelfRecovery;
	hdd_populate_runtime_cfg(hdd_ctx, &cfg);
	hif_init_ini_config(scn, &cfg);
}

/**
 * hdd_update_config() - Initialize driver per module ini parameters
 * @hdd_ctx: HDD Context
 *
 * API is used to initialize all driver per module configuration parameters
 * Return: 0 for success, errno for failure
 */
int hdd_update_config(hdd_context_t *hdd_ctx)
{
	int ret;

	hdd_update_ol_config(hdd_ctx);
	hdd_update_hif_config(hdd_ctx);
	if (QDF_GLOBAL_FTM_MODE == hdd_get_conparam())
		ret = hdd_update_cds_config_ftm(hdd_ctx);
	else
		ret = hdd_update_cds_config(hdd_ctx);

	return ret;
}

/**
 * wlan_hdd_get_dfs_mode() - get ACS DFS mode
 * @mode : cfg80211 DFS mode
 *
 * Return: return SAP ACS DFS mode else return ACS_DFS_MODE_NONE
 */
enum  sap_acs_dfs_mode wlan_hdd_get_dfs_mode(enum dfs_mode mode)
{
	switch (mode) {
	case DFS_MODE_ENABLE:
		return ACS_DFS_MODE_ENABLE;
		break;
	case DFS_MODE_DISABLE:
		return ACS_DFS_MODE_DISABLE;
		break;
	case DFS_MODE_DEPRIORITIZE:
		return ACS_DFS_MODE_DEPRIORITIZE;
		break;
	default:
		hdd_err("ACS dfs mode is NONE");
		return  ACS_DFS_MODE_NONE;
	}
}

/**
 * hdd_enable_disable_ca_event() - enable/disable channel avoidance event
 * @hddctx: pointer to hdd context
 * @set_value: enable/disable
 *
 * When Host sends vendor command enable, FW will send *ONE* CA ind to
 * Host(even though it is duplicate). When Host send vendor command
 * disable,FW doesn't perform any action. Whenever any change in
 * CA *and* WLAN is in SAP/P2P-GO mode, FW sends CA ind to host.
 *
 * return - 0 on success, appropriate error values on failure.
 */
int hdd_enable_disable_ca_event(hdd_context_t *hddctx, uint8_t set_value)
{
	QDF_STATUS status;

	if (0 != wlan_hdd_validate_context(hddctx)) {
		return -EAGAIN;
	}

	if (!hddctx->config->goptimize_chan_avoid_event) {
		hdd_warn("goptimize_chan_avoid_event ini param disabled");
		return -EINVAL;
	}

	status = sme_enable_disable_chanavoidind_event(hddctx->hHal, set_value);
	if (!QDF_IS_STATUS_SUCCESS(status)) {
		hdd_err("Failed to send chan avoid command to SME");
		return -EINVAL;
	}
	return 0;
}

/**
 * hdd_set_roaming_in_progress() - to set the roaming in progress flag
 * @value: value to set
 *
 * This function will set the passed value to roaming in progress flag.
 *
 * Return: None
 */
void hdd_set_roaming_in_progress(bool value)
{
	hdd_context_t *hdd_ctx;

	hdd_ctx = cds_get_context(QDF_MODULE_ID_HDD);
	if (!hdd_ctx) {
		hdd_err("HDD context is NULL");
		return;
	}

	hdd_ctx->roaming_in_progress = value;
	hdd_info("Roaming in Progress set to %d", value);
}

/**
 * hdd_is_roaming_in_progress() - check if roaming is in progress
 * @hdd_ctx - HDD context
 *
 * Return: true if roaming is in progress else false
 */
bool hdd_is_roaming_in_progress(void)
{
	hdd_context_t *hdd_ctx;

	hdd_ctx = cds_get_context(QDF_MODULE_ID_HDD);
	if (!hdd_ctx) {
		hdd_err("HDD context is NULL");
		return false;
	}
	return hdd_ctx->roaming_in_progress;
}

/* Register the module init/exit functions */
module_init(hdd_module_init);
module_exit(hdd_module_exit);

MODULE_LICENSE("Dual BSD/GPL");
MODULE_AUTHOR("Qualcomm Atheros, Inc.");
MODULE_DESCRIPTION("WLAN HOST DEVICE DRIVER");

module_param_call(con_mode, con_mode_handler, param_get_int, &con_mode,
		  S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);

module_param_call(fwpath, fwpath_changed_handler, param_get_string, &fwpath,
		  S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH);

module_param(enable_dfs_chan_scan, int, S_IRUSR | S_IRGRP | S_IROTH);

module_param(enable_11d, int, S_IRUSR | S_IRGRP | S_IROTH);

module_param(country_code, charp, S_IRUSR | S_IRGRP | S_IROTH);