Moved, renamed, and deleted files

The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.

1 files changed, 1369 insertions, 0 deletions

diff --git a/drivers/net/wireless/mwifiex/join.c b/drivers/net/wireless/mwifiex/join.c
new file mode 100644
index 00000000..8f9382b9
--- /dev/null
+++ b/drivers/net/wireless/mwifiex/join.c
@@ -0,0 +1,1369 @@
+/*
+ * Marvell Wireless LAN device driver: association and ad-hoc start/join
+ *
+ * Copyright (C) 2011, Marvell International Ltd.
+ *
+ * This software file (the "File") is distributed by Marvell International
+ * Ltd. under the terms of the GNU General Public License Version 2, June 1991
+ * (the "License").  You may use, redistribute and/or modify this File in
+ * accordance with the terms and conditions of the License, a copy of which
+ * is available by writing to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
+ * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
+ *
+ * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
+ * ARE EXPRESSLY DISCLAIMED.  The License provides additional details about
+ * this warranty disclaimer.
+ */
+
+#include "decl.h"
+#include "ioctl.h"
+#include "util.h"
+#include "fw.h"
+#include "main.h"
+#include "wmm.h"
+#include "11n.h"
+
+#define CAPINFO_MASK    (~(BIT(15) | BIT(14) | BIT(12) | BIT(11) | BIT(9)))
+
+/*
+ * Append a generic IE as a pass through TLV to a TLV buffer.
+ *
+ * This function is called from the network join command preparation routine.
+ *
+ * If the IE buffer has been setup by the application, this routine appends
+ * the buffer as a pass through TLV type to the request.
+ */
+static int
+mwifiex_cmd_append_generic_ie(struct mwifiex_private *priv, u8 **buffer)
+{
+	int ret_len = 0;
+	struct mwifiex_ie_types_header ie_header;
+
+	/* Null Checks */
+	if (!buffer)
+		return 0;
+	if (!(*buffer))
+		return 0;
+
+	/*
+	 * If there is a generic ie buffer setup, append it to the return
+	 *   parameter buffer pointer.
+	 */
+	if (priv->gen_ie_buf_len) {
+		dev_dbg(priv->adapter->dev,
+			"info: %s: append generic ie len %d to %p\n",
+			__func__, priv->gen_ie_buf_len, *buffer);
+
+		/* Wrap the generic IE buffer with a pass through TLV type */
+		ie_header.type = cpu_to_le16(TLV_TYPE_PASSTHROUGH);
+		ie_header.len = cpu_to_le16(priv->gen_ie_buf_len);
+		memcpy(*buffer, &ie_header, sizeof(ie_header));
+
+		/* Increment the return size and the return buffer pointer
+		   param */
+		*buffer += sizeof(ie_header);
+		ret_len += sizeof(ie_header);
+
+		/* Copy the generic IE buffer to the output buffer, advance
+		   pointer */
+		memcpy(*buffer, priv->gen_ie_buf, priv->gen_ie_buf_len);
+
+		/* Increment the return size and the return buffer pointer
+		   param */
+		*buffer += priv->gen_ie_buf_len;
+		ret_len += priv->gen_ie_buf_len;
+
+		/* Reset the generic IE buffer */
+		priv->gen_ie_buf_len = 0;
+	}
+
+	/* return the length appended to the buffer */
+	return ret_len;
+}
+
+/*
+ * Append TSF tracking info from the scan table for the target AP.
+ *
+ * This function is called from the network join command preparation routine.
+ *
+ * The TSF table TSF sent to the firmware contains two TSF values:
+ *      - The TSF of the target AP from its previous beacon/probe response
+ *      - The TSF timestamp of our local MAC at the time we observed the
+ *        beacon/probe response.
+ *
+ * The firmware uses the timestamp values to set an initial TSF value
+ * in the MAC for the new association after a reassociation attempt.
+ */
+static int
+mwifiex_cmd_append_tsf_tlv(struct mwifiex_private *priv, u8 **buffer,
+			   struct mwifiex_bssdescriptor *bss_desc)
+{
+	struct mwifiex_ie_types_tsf_timestamp tsf_tlv;
+	__le64 tsf_val;
+
+	/* Null Checks */
+	if (buffer == NULL)
+		return 0;
+	if (*buffer == NULL)
+		return 0;
+
+	memset(&tsf_tlv, 0x00, sizeof(struct mwifiex_ie_types_tsf_timestamp));
+
+	tsf_tlv.header.type = cpu_to_le16(TLV_TYPE_TSFTIMESTAMP);
+	tsf_tlv.header.len = cpu_to_le16(2 * sizeof(tsf_val));
+
+	memcpy(*buffer, &tsf_tlv, sizeof(tsf_tlv.header));
+	*buffer += sizeof(tsf_tlv.header);
+
+	/* TSF at the time when beacon/probe_response was received */
+	tsf_val = cpu_to_le64(bss_desc->network_tsf);
+	memcpy(*buffer, &tsf_val, sizeof(tsf_val));
+	*buffer += sizeof(tsf_val);
+
+	memcpy(&tsf_val, bss_desc->time_stamp, sizeof(tsf_val));
+
+	dev_dbg(priv->adapter->dev,
+		"info: %s: TSF offset calc: %016llx - %016llx\n",
+		__func__, tsf_val, bss_desc->network_tsf);
+
+	memcpy(*buffer, &tsf_val, sizeof(tsf_val));
+	*buffer += sizeof(tsf_val);
+
+	return sizeof(tsf_tlv.header) + (2 * sizeof(tsf_val));
+}
+
+/*
+ * This function finds out the common rates between rate1 and rate2.
+ *
+ * It will fill common rates in rate1 as output if found.
+ *
+ * NOTE: Setting the MSB of the basic rates needs to be taken
+ * care of, either before or after calling this function.
+ */
+static int mwifiex_get_common_rates(struct mwifiex_private *priv, u8 *rate1,
+				    u32 rate1_size, u8 *rate2, u32 rate2_size)
+{
+	int ret;
+	u8 *ptr = rate1, *tmp;
+	u32 i, j;
+
+	tmp = kmemdup(rate1, rate1_size, GFP_KERNEL);
+	if (!tmp) {
+		dev_err(priv->adapter->dev, "failed to alloc tmp buf\n");
+		return -ENOMEM;
+	}
+
+	memset(rate1, 0, rate1_size);
+
+	for (i = 0; rate2[i] && i < rate2_size; i++) {
+		for (j = 0; tmp[j] && j < rate1_size; j++) {
+			/* Check common rate, excluding the bit for
+			   basic rate */
+			if ((rate2[i] & 0x7F) == (tmp[j] & 0x7F)) {
+				*rate1++ = tmp[j];
+				break;
+			}
+		}
+	}
+
+	dev_dbg(priv->adapter->dev, "info: Tx data rate set to %#x\n",
+		priv->data_rate);
+
+	if (!priv->is_data_rate_auto) {
+		while (*ptr) {
+			if ((*ptr & 0x7f) == priv->data_rate) {
+				ret = 0;
+				goto done;
+			}
+			ptr++;
+		}
+		dev_err(priv->adapter->dev, "previously set fixed data rate %#x"
+			" is not compatible with the network\n",
+			priv->data_rate);
+
+		ret = -1;
+		goto done;
+	}
+
+	ret = 0;
+done:
+	kfree(tmp);
+	return ret;
+}
+
+/*
+ * This function creates the intersection of the rates supported by a
+ * target BSS and our adapter settings for use in an assoc/join command.
+ */
+static int
+mwifiex_setup_rates_from_bssdesc(struct mwifiex_private *priv,
+				 struct mwifiex_bssdescriptor *bss_desc,
+				 u8 *out_rates, u32 *out_rates_size)
+{
+	u8 card_rates[MWIFIEX_SUPPORTED_RATES];
+	u32 card_rates_size;
+
+	/* Copy AP supported rates */
+	memcpy(out_rates, bss_desc->supported_rates, MWIFIEX_SUPPORTED_RATES);
+	/* Get the STA supported rates */
+	card_rates_size = mwifiex_get_active_data_rates(priv, card_rates);
+	/* Get the common rates between AP and STA supported rates */
+	if (mwifiex_get_common_rates(priv, out_rates, MWIFIEX_SUPPORTED_RATES,
+				     card_rates, card_rates_size)) {
+		*out_rates_size = 0;
+		dev_err(priv->adapter->dev, "%s: cannot get common rates\n",
+			__func__);
+		return -1;
+	}
+
+	*out_rates_size =
+		min_t(size_t, strlen(out_rates), MWIFIEX_SUPPORTED_RATES);
+
+	return 0;
+}
+
+/*
+ * This function appends a WAPI IE.
+ *
+ * This function is called from the network join command preparation routine.
+ *
+ * If the IE buffer has been setup by the application, this routine appends
+ * the buffer as a WAPI TLV type to the request.
+ */
+static int
+mwifiex_cmd_append_wapi_ie(struct mwifiex_private *priv, u8 **buffer)
+{
+	int retLen = 0;
+	struct mwifiex_ie_types_header ie_header;
+
+	/* Null Checks */
+	if (buffer == NULL)
+		return 0;
+	if (*buffer == NULL)
+		return 0;
+
+	/*
+	 * If there is a wapi ie buffer setup, append it to the return
+	 *   parameter buffer pointer.
+	 */
+	if (priv->wapi_ie_len) {
+		dev_dbg(priv->adapter->dev, "cmd: append wapi ie %d to %p\n",
+			priv->wapi_ie_len, *buffer);
+
+		/* Wrap the generic IE buffer with a pass through TLV type */
+		ie_header.type = cpu_to_le16(TLV_TYPE_WAPI_IE);
+		ie_header.len = cpu_to_le16(priv->wapi_ie_len);
+		memcpy(*buffer, &ie_header, sizeof(ie_header));
+
+		/* Increment the return size and the return buffer pointer
+		   param */
+		*buffer += sizeof(ie_header);
+		retLen += sizeof(ie_header);
+
+		/* Copy the wapi IE buffer to the output buffer, advance
+		   pointer */
+		memcpy(*buffer, priv->wapi_ie, priv->wapi_ie_len);
+
+		/* Increment the return size and the return buffer pointer
+		   param */
+		*buffer += priv->wapi_ie_len;
+		retLen += priv->wapi_ie_len;
+
+	}
+	/* return the length appended to the buffer */
+	return retLen;
+}
+
+/*
+ * This function appends rsn ie tlv for wpa/wpa2 security modes.
+ * It is called from the network join command preparation routine.
+ */
+static int mwifiex_append_rsn_ie_wpa_wpa2(struct mwifiex_private *priv,
+					  u8 **buffer)
+{
+	struct mwifiex_ie_types_rsn_param_set *rsn_ie_tlv;
+	int rsn_ie_len;
+
+	if (!buffer || !(*buffer))
+		return 0;
+
+	rsn_ie_tlv = (struct mwifiex_ie_types_rsn_param_set *) (*buffer);
+	rsn_ie_tlv->header.type = cpu_to_le16((u16) priv->wpa_ie[0]);
+	rsn_ie_tlv->header.type = cpu_to_le16(
+				 le16_to_cpu(rsn_ie_tlv->header.type) & 0x00FF);
+	rsn_ie_tlv->header.len = cpu_to_le16((u16) priv->wpa_ie[1]);
+	rsn_ie_tlv->header.len = cpu_to_le16(le16_to_cpu(rsn_ie_tlv->header.len)
+							 & 0x00FF);
+	if (le16_to_cpu(rsn_ie_tlv->header.len) <= (sizeof(priv->wpa_ie) - 2))
+		memcpy(rsn_ie_tlv->rsn_ie, &priv->wpa_ie[2],
+		       le16_to_cpu(rsn_ie_tlv->header.len));
+	else
+		return -1;
+
+	rsn_ie_len = sizeof(rsn_ie_tlv->header) +
+					le16_to_cpu(rsn_ie_tlv->header.len);
+	*buffer += rsn_ie_len;
+
+	return rsn_ie_len;
+}
+
+/*
+ * This function prepares command for association.
+ *
+ * This sets the following parameters -
+ *      - Peer MAC address
+ *      - Listen interval
+ *      - Beacon interval
+ *      - Capability information
+ *
+ * ...and the following TLVs, as required -
+ *      - SSID TLV
+ *      - PHY TLV
+ *      - SS TLV
+ *      - Rates TLV
+ *      - Authentication TLV
+ *      - Channel TLV
+ *      - WPA/WPA2 IE
+ *      - 11n TLV
+ *      - Vendor specific TLV
+ *      - WMM TLV
+ *      - WAPI IE
+ *      - Generic IE
+ *      - TSF TLV
+ *
+ * Preparation also includes -
+ *      - Setting command ID and proper size
+ *      - Ensuring correct endian-ness
+ */
+int mwifiex_cmd_802_11_associate(struct mwifiex_private *priv,
+				 struct host_cmd_ds_command *cmd,
+				 struct mwifiex_bssdescriptor *bss_desc)
+{
+	struct host_cmd_ds_802_11_associate *assoc = &cmd->params.associate;
+	struct mwifiex_ie_types_ssid_param_set *ssid_tlv;
+	struct mwifiex_ie_types_phy_param_set *phy_tlv;
+	struct mwifiex_ie_types_ss_param_set *ss_tlv;
+	struct mwifiex_ie_types_rates_param_set *rates_tlv;
+	struct mwifiex_ie_types_auth_type *auth_tlv;
+	struct mwifiex_ie_types_chan_list_param_set *chan_tlv;
+	u8 rates[MWIFIEX_SUPPORTED_RATES];
+	u32 rates_size;
+	u16 tmp_cap;
+	u8 *pos;
+	int rsn_ie_len = 0;
+
+	pos = (u8 *) assoc;
+
+	mwifiex_cfg_tx_buf(priv, bss_desc);
+
+	cmd->command = cpu_to_le16(HostCmd_CMD_802_11_ASSOCIATE);
+
+	/* Save so we know which BSS Desc to use in the response handler */
+	priv->attempted_bss_desc = bss_desc;
+
+	memcpy(assoc->peer_sta_addr,
+	       bss_desc->mac_address, sizeof(assoc->peer_sta_addr));
+	pos += sizeof(assoc->peer_sta_addr);
+
+	/* Set the listen interval */
+	assoc->listen_interval = cpu_to_le16(priv->listen_interval);
+	/* Set the beacon period */
+	assoc->beacon_period = cpu_to_le16(bss_desc->beacon_period);
+
+	pos += sizeof(assoc->cap_info_bitmap);
+	pos += sizeof(assoc->listen_interval);
+	pos += sizeof(assoc->beacon_period);
+	pos += sizeof(assoc->dtim_period);
+
+	ssid_tlv = (struct mwifiex_ie_types_ssid_param_set *) pos;
+	ssid_tlv->header.type = cpu_to_le16(WLAN_EID_SSID);
+	ssid_tlv->header.len = cpu_to_le16((u16) bss_desc->ssid.ssid_len);
+	memcpy(ssid_tlv->ssid, bss_desc->ssid.ssid,
+	       le16_to_cpu(ssid_tlv->header.len));
+	pos += sizeof(ssid_tlv->header) + le16_to_cpu(ssid_tlv->header.len);
+
+	phy_tlv = (struct mwifiex_ie_types_phy_param_set *) pos;
+	phy_tlv->header.type = cpu_to_le16(WLAN_EID_DS_PARAMS);
+	phy_tlv->header.len = cpu_to_le16(sizeof(phy_tlv->fh_ds.ds_param_set));
+	memcpy(&phy_tlv->fh_ds.ds_param_set,
+	       &bss_desc->phy_param_set.ds_param_set.current_chan,
+	       sizeof(phy_tlv->fh_ds.ds_param_set));
+	pos += sizeof(phy_tlv->header) + le16_to_cpu(phy_tlv->header.len);
+
+	ss_tlv = (struct mwifiex_ie_types_ss_param_set *) pos;
+	ss_tlv->header.type = cpu_to_le16(WLAN_EID_CF_PARAMS);
+	ss_tlv->header.len = cpu_to_le16(sizeof(ss_tlv->cf_ibss.cf_param_set));
+	pos += sizeof(ss_tlv->header) + le16_to_cpu(ss_tlv->header.len);
+
+	/* Get the common rates supported between the driver and the BSS Desc */
+	if (mwifiex_setup_rates_from_bssdesc
+	    (priv, bss_desc, rates, &rates_size))
+		return -1;
+
+	/* Save the data rates into Current BSS state structure */
+	priv->curr_bss_params.num_of_rates = rates_size;
+	memcpy(&priv->curr_bss_params.data_rates, rates, rates_size);
+
+	/* Setup the Rates TLV in the association command */
+	rates_tlv = (struct mwifiex_ie_types_rates_param_set *) pos;
+	rates_tlv->header.type = cpu_to_le16(WLAN_EID_SUPP_RATES);
+	rates_tlv->header.len = cpu_to_le16((u16) rates_size);
+	memcpy(rates_tlv->rates, rates, rates_size);
+	pos += sizeof(rates_tlv->header) + rates_size;
+	dev_dbg(priv->adapter->dev, "info: ASSOC_CMD: rates size = %d\n",
+		rates_size);
+
+	/* Add the Authentication type to be used for Auth frames */
+	auth_tlv = (struct mwifiex_ie_types_auth_type *) pos;
+	auth_tlv->header.type = cpu_to_le16(TLV_TYPE_AUTH_TYPE);
+	auth_tlv->header.len = cpu_to_le16(sizeof(auth_tlv->auth_type));
+	if (priv->sec_info.wep_enabled)
+		auth_tlv->auth_type = cpu_to_le16(
+				(u16) priv->sec_info.authentication_mode);
+	else
+		auth_tlv->auth_type = cpu_to_le16(NL80211_AUTHTYPE_OPEN_SYSTEM);
+
+	pos += sizeof(auth_tlv->header) + le16_to_cpu(auth_tlv->header.len);
+
+	if (IS_SUPPORT_MULTI_BANDS(priv->adapter) &&
+	    !(ISSUPP_11NENABLED(priv->adapter->fw_cap_info) &&
+	    (!bss_desc->disable_11n) &&
+	    (priv->adapter->config_bands & BAND_GN ||
+	     priv->adapter->config_bands & BAND_AN) &&
+	    (bss_desc->bcn_ht_cap)
+	    )
+		) {
+		/* Append a channel TLV for the channel the attempted AP was
+		   found on */
+		chan_tlv = (struct mwifiex_ie_types_chan_list_param_set *) pos;
+		chan_tlv->header.type = cpu_to_le16(TLV_TYPE_CHANLIST);
+		chan_tlv->header.len =
+			cpu_to_le16(sizeof(struct mwifiex_chan_scan_param_set));
+
+		memset(chan_tlv->chan_scan_param, 0x00,
+		       sizeof(struct mwifiex_chan_scan_param_set));
+		chan_tlv->chan_scan_param[0].chan_number =
+			(bss_desc->phy_param_set.ds_param_set.current_chan);
+		dev_dbg(priv->adapter->dev, "info: Assoc: TLV Chan = %d\n",
+			chan_tlv->chan_scan_param[0].chan_number);
+
+		chan_tlv->chan_scan_param[0].radio_type =
+			mwifiex_band_to_radio_type((u8) bss_desc->bss_band);
+
+		dev_dbg(priv->adapter->dev, "info: Assoc: TLV Band = %d\n",
+			chan_tlv->chan_scan_param[0].radio_type);
+		pos += sizeof(chan_tlv->header) +
+			sizeof(struct mwifiex_chan_scan_param_set);
+	}
+
+	if (!priv->wps.session_enable) {
+		if (priv->sec_info.wpa_enabled || priv->sec_info.wpa2_enabled)
+			rsn_ie_len = mwifiex_append_rsn_ie_wpa_wpa2(priv, &pos);
+
+		if (rsn_ie_len == -1)
+			return -1;
+	}
+
+	if (ISSUPP_11NENABLED(priv->adapter->fw_cap_info) &&
+	    (!bss_desc->disable_11n) &&
+	    (priv->adapter->config_bands & BAND_GN ||
+	     priv->adapter->config_bands & BAND_AN))
+		mwifiex_cmd_append_11n_tlv(priv, bss_desc, &pos);
+
+	/* Append vendor specific IE TLV */
+	mwifiex_cmd_append_vsie_tlv(priv, MWIFIEX_VSIE_MASK_ASSOC, &pos);
+
+	mwifiex_wmm_process_association_req(priv, &pos, &bss_desc->wmm_ie,
+					    bss_desc->bcn_ht_cap);
+	if (priv->sec_info.wapi_enabled && priv->wapi_ie_len)
+		mwifiex_cmd_append_wapi_ie(priv, &pos);
+
+
+	mwifiex_cmd_append_generic_ie(priv, &pos);
+
+	mwifiex_cmd_append_tsf_tlv(priv, &pos, bss_desc);
+
+	cmd->size = cpu_to_le16((u16) (pos - (u8 *) assoc) + S_DS_GEN);
+
+	/* Set the Capability info at last */
+	tmp_cap = bss_desc->cap_info_bitmap;
+
+	if (priv->adapter->config_bands == BAND_B)
+		tmp_cap &= ~WLAN_CAPABILITY_SHORT_SLOT_TIME;
+
+	tmp_cap &= CAPINFO_MASK;
+	dev_dbg(priv->adapter->dev, "info: ASSOC_CMD: tmp_cap=%4X CAPINFO_MASK=%4lX\n",
+		tmp_cap, CAPINFO_MASK);
+	assoc->cap_info_bitmap = cpu_to_le16(tmp_cap);
+
+	return 0;
+}
+
+/*
+ * Association firmware command response handler
+ *
+ * The response buffer for the association command has the following
+ * memory layout.
+ *
+ * For cases where an association response was not received (indicated
+ * by the CapInfo and AId field):
+ *
+ *     .------------------------------------------------------------.
+ *     |  Header(4 * sizeof(t_u16)):  Standard command response hdr |
+ *     .------------------------------------------------------------.
+ *     |  cap_info/Error Return(t_u16):                             |
+ *     |           0xFFFF(-1): Internal error                       |
+ *     |           0xFFFE(-2): Authentication unhandled message     |
+ *     |           0xFFFD(-3): Authentication refused               |
+ *     |           0xFFFC(-4): Timeout waiting for AP response      |
+ *     .------------------------------------------------------------.
+ *     |  status_code(t_u16):                                       |
+ *     |        If cap_info is -1:                                  |
+ *     |           An internal firmware failure prevented the       |
+ *     |           command from being processed.  The status_code   |
+ *     |           will be set to 1.                                |
+ *     |                                                            |
+ *     |        If cap_info is -2:                                  |
+ *     |           An authentication frame was received but was     |
+ *     |           not handled by the firmware.  IEEE Status        |
+ *     |           code for the failure is returned.                |
+ *     |                                                            |
+ *     |        If cap_info is -3:                                  |
+ *     |           An authentication frame was received and the     |
+ *     |           status_code is the IEEE Status reported in the   |
+ *     |           response.                                        |
+ *     |                                                            |
+ *     |        If cap_info is -4:                                  |
+ *     |           (1) Association response timeout                 |
+ *     |           (2) Authentication response timeout              |
+ *     .------------------------------------------------------------.
+ *     |  a_id(t_u16): 0xFFFF                                       |
+ *     .------------------------------------------------------------.
+ *
+ *
+ * For cases where an association response was received, the IEEE
+ * standard association response frame is returned:
+ *
+ *     .------------------------------------------------------------.
+ *     |  Header(4 * sizeof(t_u16)):  Standard command response hdr |
+ *     .------------------------------------------------------------.
+ *     |  cap_info(t_u16): IEEE Capability                          |
+ *     .------------------------------------------------------------.
+ *     |  status_code(t_u16): IEEE Status Code                      |
+ *     .------------------------------------------------------------.
+ *     |  a_id(t_u16): IEEE Association ID                          |
+ *     .------------------------------------------------------------.
+ *     |  IEEE IEs(variable): Any received IEs comprising the       |
+ *     |                      remaining portion of a received       |
+ *     |                      association response frame.           |
+ *     .------------------------------------------------------------.
+ *
+ * For simplistic handling, the status_code field can be used to determine
+ * an association success (0) or failure (non-zero).
+ */
+int mwifiex_ret_802_11_associate(struct mwifiex_private *priv,
+			     struct host_cmd_ds_command *resp)
+{
+	struct mwifiex_adapter *adapter = priv->adapter;
+	int ret = 0;
+	struct ieee_types_assoc_rsp *assoc_rsp;
+	struct mwifiex_bssdescriptor *bss_desc;
+	u8 enable_data = true;
+
+	assoc_rsp = (struct ieee_types_assoc_rsp *) &resp->params;
+
+	priv->assoc_rsp_size = min(le16_to_cpu(resp->size) - S_DS_GEN,
+				   sizeof(priv->assoc_rsp_buf));
+
+	memcpy(priv->assoc_rsp_buf, &resp->params, priv->assoc_rsp_size);
+
+	if (le16_to_cpu(assoc_rsp->status_code)) {
+		priv->adapter->dbg.num_cmd_assoc_failure++;
+		dev_err(priv->adapter->dev,
+			"ASSOC_RESP: failed, status code=%d err=%#x a_id=%#x\n",
+			le16_to_cpu(assoc_rsp->status_code),
+			le16_to_cpu(assoc_rsp->cap_info_bitmap),
+			le16_to_cpu(assoc_rsp->a_id));
+
+		ret = le16_to_cpu(assoc_rsp->status_code);
+		goto done;
+	}
+
+	/* Send a Media Connected event, according to the Spec */
+	priv->media_connected = true;
+
+	priv->adapter->ps_state = PS_STATE_AWAKE;
+	priv->adapter->pps_uapsd_mode = false;
+	priv->adapter->tx_lock_flag = false;
+
+	/* Set the attempted BSSID Index to current */
+	bss_desc = priv->attempted_bss_desc;
+
+	dev_dbg(priv->adapter->dev, "info: ASSOC_RESP: %s\n",
+		bss_desc->ssid.ssid);
+
+	/* Make a copy of current BSSID descriptor */
+	memcpy(&priv->curr_bss_params.bss_descriptor,
+	       bss_desc, sizeof(struct mwifiex_bssdescriptor));
+
+	/* Update curr_bss_params */
+	priv->curr_bss_params.bss_descriptor.channel
+		= bss_desc->phy_param_set.ds_param_set.current_chan;
+
+	priv->curr_bss_params.band = (u8) bss_desc->bss_band;
+
+	if (bss_desc->wmm_ie.vend_hdr.element_id == WLAN_EID_VENDOR_SPECIFIC)
+		priv->curr_bss_params.wmm_enabled = true;
+	else
+		priv->curr_bss_params.wmm_enabled = false;
+
+	if ((priv->wmm_required || bss_desc->bcn_ht_cap) &&
+	    priv->curr_bss_params.wmm_enabled)
+		priv->wmm_enabled = true;
+	else
+		priv->wmm_enabled = false;
+
+	priv->curr_bss_params.wmm_uapsd_enabled = false;
+
+	if (priv->wmm_enabled)
+		priv->curr_bss_params.wmm_uapsd_enabled
+			= ((bss_desc->wmm_ie.qos_info_bitmap &
+				IEEE80211_WMM_IE_AP_QOSINFO_UAPSD) ? 1 : 0);
+
+	dev_dbg(priv->adapter->dev, "info: ASSOC_RESP: curr_pkt_filter is %#x\n",
+		priv->curr_pkt_filter);
+	if (priv->sec_info.wpa_enabled || priv->sec_info.wpa2_enabled)
+		priv->wpa_is_gtk_set = false;
+
+	if (priv->wmm_enabled) {
+		/* Don't re-enable carrier until we get the WMM_GET_STATUS
+		   event */
+		enable_data = false;
+	} else {
+		/* Since WMM is not enabled, setup the queues with the
+		   defaults */
+		mwifiex_wmm_setup_queue_priorities(priv, NULL);
+		mwifiex_wmm_setup_ac_downgrade(priv);
+	}
+
+	if (enable_data)
+		dev_dbg(priv->adapter->dev,
+			"info: post association, re-enabling data flow\n");
+
+	/* Reset SNR/NF/RSSI values */
+	priv->data_rssi_last = 0;
+	priv->data_nf_last = 0;
+	priv->data_rssi_avg = 0;
+	priv->data_nf_avg = 0;
+	priv->bcn_rssi_last = 0;
+	priv->bcn_nf_last = 0;
+	priv->bcn_rssi_avg = 0;
+	priv->bcn_nf_avg = 0;
+	priv->rxpd_rate = 0;
+	priv->rxpd_htinfo = 0;
+
+	mwifiex_save_curr_bcn(priv);
+
+	priv->adapter->dbg.num_cmd_assoc_success++;
+
+	dev_dbg(priv->adapter->dev, "info: ASSOC_RESP: associated\n");
+
+	/* Add the ra_list here for infra mode as there will be only 1 ra
+	   always */
+	mwifiex_ralist_add(priv,
+			   priv->curr_bss_params.bss_descriptor.mac_address);
+
+	if (!netif_carrier_ok(priv->netdev))
+		netif_carrier_on(priv->netdev);
+	if (netif_queue_stopped(priv->netdev))
+		netif_wake_queue(priv->netdev);
+
+	if (priv->sec_info.wpa_enabled || priv->sec_info.wpa2_enabled)
+		priv->scan_block = true;
+
+done:
+	/* Need to indicate IOCTL complete */
+	if (adapter->curr_cmd->wait_q_enabled) {
+		if (ret)
+			adapter->cmd_wait_q.status = -1;
+		else
+			adapter->cmd_wait_q.status = 0;
+	}
+
+	return ret;
+}
+
+/*
+ * This function prepares command for ad-hoc start.
+ *
+ * Driver will fill up SSID, BSS mode, IBSS parameters, physical
+ * parameters, probe delay, and capability information. Firmware
+ * will fill up beacon period, basic rates and operational rates.
+ *
+ * In addition, the following TLVs are added -
+ *      - Channel TLV
+ *      - Vendor specific IE
+ *      - WPA/WPA2 IE
+ *      - HT Capabilities IE
+ *      - HT Information IE
+ *
+ * Preparation also includes -
+ *      - Setting command ID and proper size
+ *      - Ensuring correct endian-ness
+ */
+int
+mwifiex_cmd_802_11_ad_hoc_start(struct mwifiex_private *priv,
+				struct host_cmd_ds_command *cmd,
+				struct cfg80211_ssid *req_ssid)
+{
+	int rsn_ie_len = 0;
+	struct mwifiex_adapter *adapter = priv->adapter;
+	struct host_cmd_ds_802_11_ad_hoc_start *adhoc_start =
+		&cmd->params.adhoc_start;
+	struct mwifiex_bssdescriptor *bss_desc;
+	u32 cmd_append_size = 0;
+	u32 i;
+	u16 tmp_cap;
+	struct mwifiex_ie_types_chan_list_param_set *chan_tlv;
+	u8 radio_type;
+
+	struct mwifiex_ie_types_htcap *ht_cap;
+	struct mwifiex_ie_types_htinfo *ht_info;
+	u8 *pos = (u8 *) adhoc_start +
+			sizeof(struct host_cmd_ds_802_11_ad_hoc_start);
+
+	if (!adapter)
+		return -1;
+
+	cmd->command = cpu_to_le16(HostCmd_CMD_802_11_AD_HOC_START);
+
+	bss_desc = &priv->curr_bss_params.bss_descriptor;
+	priv->attempted_bss_desc = bss_desc;
+
+	/*
+	 * Fill in the parameters for 2 data structures:
+	 *   1. struct host_cmd_ds_802_11_ad_hoc_start command
+	 *   2. bss_desc
+	 * Driver will fill up SSID, bss_mode,IBSS param, Physical Param,
+	 * probe delay, and Cap info.
+	 * Firmware will fill up beacon period, Basic rates
+	 * and operational rates.
+	 */
+
+	memset(adhoc_start->ssid, 0, IEEE80211_MAX_SSID_LEN);
+
+	memcpy(adhoc_start->ssid, req_ssid->ssid, req_ssid->ssid_len);
+
+	dev_dbg(adapter->dev, "info: ADHOC_S_CMD: SSID = %s\n",
+		adhoc_start->ssid);
+
+	memset(bss_desc->ssid.ssid, 0, IEEE80211_MAX_SSID_LEN);
+	memcpy(bss_desc->ssid.ssid, req_ssid->ssid, req_ssid->ssid_len);
+
+	bss_desc->ssid.ssid_len = req_ssid->ssid_len;
+
+	/* Set the BSS mode */
+	adhoc_start->bss_mode = HostCmd_BSS_MODE_IBSS;
+	bss_desc->bss_mode = NL80211_IFTYPE_ADHOC;
+	adhoc_start->beacon_period = cpu_to_le16(priv->beacon_period);
+	bss_desc->beacon_period = priv->beacon_period;
+
+	/* Set Physical param set */
+/* Parameter IE Id */
+#define DS_PARA_IE_ID   3
+/* Parameter IE length */
+#define DS_PARA_IE_LEN  1
+
+	adhoc_start->phy_param_set.ds_param_set.element_id = DS_PARA_IE_ID;
+	adhoc_start->phy_param_set.ds_param_set.len = DS_PARA_IE_LEN;
+
+	if (!mwifiex_get_cfp(priv, adapter->adhoc_start_band,
+			     (u16) priv->adhoc_channel, 0)) {
+		struct mwifiex_chan_freq_power *cfp;
+		cfp = mwifiex_get_cfp(priv, adapter->adhoc_start_band,
+				      FIRST_VALID_CHANNEL, 0);
+		if (cfp)
+			priv->adhoc_channel = (u8) cfp->channel;
+	}
+
+	if (!priv->adhoc_channel) {
+		dev_err(adapter->dev, "ADHOC_S_CMD: adhoc_channel cannot be 0\n");
+		return -1;
+	}
+
+	dev_dbg(adapter->dev, "info: ADHOC_S_CMD: creating ADHOC on channel %d\n",
+		priv->adhoc_channel);
+
+	priv->curr_bss_params.bss_descriptor.channel = priv->adhoc_channel;
+	priv->curr_bss_params.band = adapter->adhoc_start_band;
+
+	bss_desc->channel = priv->adhoc_channel;
+	adhoc_start->phy_param_set.ds_param_set.current_chan =
+		priv->adhoc_channel;
+
+	memcpy(&bss_desc->phy_param_set, &adhoc_start->phy_param_set,
+	       sizeof(union ieee_types_phy_param_set));
+
+	/* Set IBSS param set */
+/* IBSS parameter IE Id */
+#define IBSS_PARA_IE_ID   6
+/* IBSS parameter IE length */
+#define IBSS_PARA_IE_LEN  2
+
+	adhoc_start->ss_param_set.ibss_param_set.element_id = IBSS_PARA_IE_ID;
+	adhoc_start->ss_param_set.ibss_param_set.len = IBSS_PARA_IE_LEN;
+	adhoc_start->ss_param_set.ibss_param_set.atim_window
+					= cpu_to_le16(priv->atim_window);
+	memcpy(&bss_desc->ss_param_set, &adhoc_start->ss_param_set,
+	       sizeof(union ieee_types_ss_param_set));
+
+	/* Set Capability info */
+	bss_desc->cap_info_bitmap |= WLAN_CAPABILITY_IBSS;
+	tmp_cap = le16_to_cpu(adhoc_start->cap_info_bitmap);
+	tmp_cap &= ~WLAN_CAPABILITY_ESS;
+	tmp_cap |= WLAN_CAPABILITY_IBSS;
+
+	/* Set up privacy in bss_desc */
+	if (priv->sec_info.encryption_mode) {
+		/* Ad-Hoc capability privacy on */
+		dev_dbg(adapter->dev,
+			"info: ADHOC_S_CMD: wep_status set privacy to WEP\n");
+		bss_desc->privacy = MWIFIEX_802_11_PRIV_FILTER_8021X_WEP;
+		tmp_cap |= WLAN_CAPABILITY_PRIVACY;
+	} else {
+		dev_dbg(adapter->dev, "info: ADHOC_S_CMD: wep_status NOT set,"
+				" setting privacy to ACCEPT ALL\n");
+		bss_desc->privacy = MWIFIEX_802_11_PRIV_FILTER_ACCEPT_ALL;
+	}
+
+	memset(adhoc_start->data_rate, 0, sizeof(adhoc_start->data_rate));
+	mwifiex_get_active_data_rates(priv, adhoc_start->data_rate);
+	if ((adapter->adhoc_start_band & BAND_G) &&
+	    (priv->curr_pkt_filter & HostCmd_ACT_MAC_ADHOC_G_PROTECTION_ON)) {
+		if (mwifiex_send_cmd_async(priv, HostCmd_CMD_MAC_CONTROL,
+					   HostCmd_ACT_GEN_SET, 0,
+					   &priv->curr_pkt_filter)) {
+			dev_err(adapter->dev,
+				"ADHOC_S_CMD: G Protection config failed\n");
+			return -1;
+		}
+	}
+	/* Find the last non zero */
+	for (i = 0; i < sizeof(adhoc_start->data_rate); i++)
+		if (!adhoc_start->data_rate[i])
+			break;
+
+	priv->curr_bss_params.num_of_rates = i;
+
+	/* Copy the ad-hoc creating rates into Current BSS rate structure */
+	memcpy(&priv->curr_bss_params.data_rates,
+	       &adhoc_start->data_rate, priv->curr_bss_params.num_of_rates);
+
+	dev_dbg(adapter->dev, "info: ADHOC_S_CMD: rates=%02x %02x %02x %02x\n",
+		adhoc_start->data_rate[0], adhoc_start->data_rate[1],
+		adhoc_start->data_rate[2], adhoc_start->data_rate[3]);
+
+	dev_dbg(adapter->dev, "info: ADHOC_S_CMD: AD-HOC Start command is ready\n");
+
+	if (IS_SUPPORT_MULTI_BANDS(adapter)) {
+		/* Append a channel TLV */
+		chan_tlv = (struct mwifiex_ie_types_chan_list_param_set *) pos;
+		chan_tlv->header.type = cpu_to_le16(TLV_TYPE_CHANLIST);
+		chan_tlv->header.len =
+			cpu_to_le16(sizeof(struct mwifiex_chan_scan_param_set));
+
+		memset(chan_tlv->chan_scan_param, 0x00,
+		       sizeof(struct mwifiex_chan_scan_param_set));
+		chan_tlv->chan_scan_param[0].chan_number =
+			(u8) priv->curr_bss_params.bss_descriptor.channel;
+
+		dev_dbg(adapter->dev, "info: ADHOC_S_CMD: TLV Chan = %d\n",
+			chan_tlv->chan_scan_param[0].chan_number);
+
+		chan_tlv->chan_scan_param[0].radio_type
+		       = mwifiex_band_to_radio_type(priv->curr_bss_params.band);
+		if (adapter->adhoc_start_band & BAND_GN ||
+		    adapter->adhoc_start_band & BAND_AN) {
+			if (adapter->sec_chan_offset ==
+					    IEEE80211_HT_PARAM_CHA_SEC_ABOVE)
+				chan_tlv->chan_scan_param[0].radio_type |=
+					(IEEE80211_HT_PARAM_CHA_SEC_ABOVE << 4);
+			else if (adapter->sec_chan_offset ==
+					    IEEE80211_HT_PARAM_CHA_SEC_ABOVE)
+				chan_tlv->chan_scan_param[0].radio_type |=
+					(IEEE80211_HT_PARAM_CHA_SEC_BELOW << 4);
+		}
+		dev_dbg(adapter->dev, "info: ADHOC_S_CMD: TLV Band = %d\n",
+			chan_tlv->chan_scan_param[0].radio_type);
+		pos += sizeof(chan_tlv->header) +
+			sizeof(struct mwifiex_chan_scan_param_set);
+		cmd_append_size +=
+			sizeof(chan_tlv->header) +
+			sizeof(struct mwifiex_chan_scan_param_set);
+	}
+
+	/* Append vendor specific IE TLV */
+	cmd_append_size += mwifiex_cmd_append_vsie_tlv(priv,
+				MWIFIEX_VSIE_MASK_ADHOC, &pos);
+
+	if (priv->sec_info.wpa_enabled) {
+		rsn_ie_len = mwifiex_append_rsn_ie_wpa_wpa2(priv, &pos);
+		if (rsn_ie_len == -1)
+			return -1;
+		cmd_append_size += rsn_ie_len;
+	}
+
+	if (adapter->adhoc_11n_enabled) {
+		/* Fill HT CAPABILITY */
+		ht_cap = (struct mwifiex_ie_types_htcap *) pos;
+		memset(ht_cap, 0, sizeof(struct mwifiex_ie_types_htcap));
+		ht_cap->header.type = cpu_to_le16(WLAN_EID_HT_CAPABILITY);
+		ht_cap->header.len =
+		       cpu_to_le16(sizeof(struct ieee80211_ht_cap));
+		radio_type = mwifiex_band_to_radio_type(
+					priv->adapter->config_bands);
+		mwifiex_fill_cap_info(priv, radio_type, ht_cap);
+
+		pos += sizeof(struct mwifiex_ie_types_htcap);
+		cmd_append_size += sizeof(struct mwifiex_ie_types_htcap);
+
+		/* Fill HT INFORMATION */
+		ht_info = (struct mwifiex_ie_types_htinfo *) pos;
+		memset(ht_info, 0, sizeof(struct mwifiex_ie_types_htinfo));
+		ht_info->header.type = cpu_to_le16(WLAN_EID_HT_INFORMATION);
+		ht_info->header.len =
+				cpu_to_le16(sizeof(struct ieee80211_ht_info));
+
+		ht_info->ht_info.control_chan =
+			(u8) priv->curr_bss_params.bss_descriptor.channel;
+		if (adapter->sec_chan_offset) {
+			ht_info->ht_info.ht_param = adapter->sec_chan_offset;
+			ht_info->ht_info.ht_param |=
+					IEEE80211_HT_PARAM_CHAN_WIDTH_ANY;
+		}
+		ht_info->ht_info.operation_mode =
+		     cpu_to_le16(IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
+		ht_info->ht_info.basic_set[0] = 0xff;
+		pos += sizeof(struct mwifiex_ie_types_htinfo);
+		cmd_append_size +=
+				sizeof(struct mwifiex_ie_types_htinfo);
+	}
+
+	cmd->size =
+		cpu_to_le16((u16)(sizeof(struct host_cmd_ds_802_11_ad_hoc_start)
+				  + S_DS_GEN + cmd_append_size));
+
+	if (adapter->adhoc_start_band == BAND_B)
+		tmp_cap &= ~WLAN_CAPABILITY_SHORT_SLOT_TIME;
+	else
+		tmp_cap |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
+
+	adhoc_start->cap_info_bitmap = cpu_to_le16(tmp_cap);
+
+	return 0;
+}
+
+/*
+ * This function prepares command for ad-hoc join.
+ *
+ * Most of the parameters are set up by copying from the target BSS descriptor
+ * from the scan response.
+ *
+ * In addition, the following TLVs are added -
+ *      - Channel TLV
+ *      - Vendor specific IE
+ *      - WPA/WPA2 IE
+ *      - 11n IE
+ *
+ * Preparation also includes -
+ *      - Setting command ID and proper size
+ *      - Ensuring correct endian-ness
+ */
+int
+mwifiex_cmd_802_11_ad_hoc_join(struct mwifiex_private *priv,
+			       struct host_cmd_ds_command *cmd,
+			       struct mwifiex_bssdescriptor *bss_desc)
+{
+	int rsn_ie_len = 0;
+	struct host_cmd_ds_802_11_ad_hoc_join *adhoc_join =
+		&cmd->params.adhoc_join;
+	struct mwifiex_ie_types_chan_list_param_set *chan_tlv;
+	u32 cmd_append_size = 0;
+	u16 tmp_cap;
+	u32 i, rates_size = 0;
+	u16 curr_pkt_filter;
+	u8 *pos =
+		(u8 *) adhoc_join +
+		sizeof(struct host_cmd_ds_802_11_ad_hoc_join);
+
+/* Use G protection */
+#define USE_G_PROTECTION        0x02
+	if (bss_desc->erp_flags & USE_G_PROTECTION) {
+		curr_pkt_filter =
+			priv->
+			curr_pkt_filter | HostCmd_ACT_MAC_ADHOC_G_PROTECTION_ON;
+
+		if (mwifiex_send_cmd_async(priv, HostCmd_CMD_MAC_CONTROL,
+					   HostCmd_ACT_GEN_SET, 0,
+					   &curr_pkt_filter)) {
+			dev_err(priv->adapter->dev,
+				"ADHOC_J_CMD: G Protection config failed\n");
+			return -1;
+		}
+	}
+
+	priv->attempted_bss_desc = bss_desc;
+
+	cmd->command = cpu_to_le16(HostCmd_CMD_802_11_AD_HOC_JOIN);
+
+	adhoc_join->bss_descriptor.bss_mode = HostCmd_BSS_MODE_IBSS;
+
+	adhoc_join->bss_descriptor.beacon_period
+		= cpu_to_le16(bss_desc->beacon_period);
+
+	memcpy(&adhoc_join->bss_descriptor.bssid,
+	       &bss_desc->mac_address, ETH_ALEN);
+
+	memcpy(&adhoc_join->bss_descriptor.ssid,
+	       &bss_desc->ssid.ssid, bss_desc->ssid.ssid_len);
+
+	memcpy(&adhoc_join->bss_descriptor.phy_param_set,
+	       &bss_desc->phy_param_set,
+	       sizeof(union ieee_types_phy_param_set));
+
+	memcpy(&adhoc_join->bss_descriptor.ss_param_set,
+	       &bss_desc->ss_param_set, sizeof(union ieee_types_ss_param_set));
+
+	tmp_cap = bss_desc->cap_info_bitmap;
+
+	tmp_cap &= CAPINFO_MASK;
+
+	dev_dbg(priv->adapter->dev,
+		"info: ADHOC_J_CMD: tmp_cap=%4X CAPINFO_MASK=%4lX\n",
+		tmp_cap, CAPINFO_MASK);
+
+	/* Information on BSSID descriptor passed to FW */
+	dev_dbg(priv->adapter->dev, "info: ADHOC_J_CMD: BSSID=%pM, SSID='%s'\n",
+		adhoc_join->bss_descriptor.bssid,
+		adhoc_join->bss_descriptor.ssid);
+
+	for (i = 0; bss_desc->supported_rates[i] &&
+			i < MWIFIEX_SUPPORTED_RATES;
+			i++)
+			;
+	rates_size = i;
+
+	/* Copy Data Rates from the Rates recorded in scan response */
+	memset(adhoc_join->bss_descriptor.data_rates, 0,
+	       sizeof(adhoc_join->bss_descriptor.data_rates));
+	memcpy(adhoc_join->bss_descriptor.data_rates,
+	       bss_desc->supported_rates, rates_size);
+
+	/* Copy the adhoc join rates into Current BSS state structure */
+	priv->curr_bss_params.num_of_rates = rates_size;
+	memcpy(&priv->curr_bss_params.data_rates, bss_desc->supported_rates,
+	       rates_size);
+
+	/* Copy the channel information */
+	priv->curr_bss_params.bss_descriptor.channel = bss_desc->channel;
+	priv->curr_bss_params.band = (u8) bss_desc->bss_band;
+
+	if (priv->sec_info.wep_enabled || priv->sec_info.wpa_enabled)
+		tmp_cap |= WLAN_CAPABILITY_PRIVACY;
+
+	if (IS_SUPPORT_MULTI_BANDS(priv->adapter)) {
+		/* Append a channel TLV */
+		chan_tlv = (struct mwifiex_ie_types_chan_list_param_set *) pos;
+		chan_tlv->header.type = cpu_to_le16(TLV_TYPE_CHANLIST);
+		chan_tlv->header.len =
+			cpu_to_le16(sizeof(struct mwifiex_chan_scan_param_set));
+
+		memset(chan_tlv->chan_scan_param, 0x00,
+		       sizeof(struct mwifiex_chan_scan_param_set));
+		chan_tlv->chan_scan_param[0].chan_number =
+			(bss_desc->phy_param_set.ds_param_set.current_chan);
+		dev_dbg(priv->adapter->dev, "info: ADHOC_J_CMD: TLV Chan=%d\n",
+			chan_tlv->chan_scan_param[0].chan_number);
+
+		chan_tlv->chan_scan_param[0].radio_type =
+			mwifiex_band_to_radio_type((u8) bss_desc->bss_band);
+
+		dev_dbg(priv->adapter->dev, "info: ADHOC_J_CMD: TLV Band=%d\n",
+			chan_tlv->chan_scan_param[0].radio_type);
+		pos += sizeof(chan_tlv->header) +
+				sizeof(struct mwifiex_chan_scan_param_set);
+		cmd_append_size += sizeof(chan_tlv->header) +
+				sizeof(struct mwifiex_chan_scan_param_set);
+	}
+
+	if (priv->sec_info.wpa_enabled)
+		rsn_ie_len = mwifiex_append_rsn_ie_wpa_wpa2(priv, &pos);
+	if (rsn_ie_len == -1)
+		return -1;
+	cmd_append_size += rsn_ie_len;
+
+	if (ISSUPP_11NENABLED(priv->adapter->fw_cap_info))
+		cmd_append_size += mwifiex_cmd_append_11n_tlv(priv,
+			bss_desc, &pos);
+
+	/* Append vendor specific IE TLV */
+	cmd_append_size += mwifiex_cmd_append_vsie_tlv(priv,
+			MWIFIEX_VSIE_MASK_ADHOC, &pos);
+
+	cmd->size = cpu_to_le16
+		((u16) (sizeof(struct host_cmd_ds_802_11_ad_hoc_join)
+			+ S_DS_GEN + cmd_append_size));
+
+	adhoc_join->bss_descriptor.cap_info_bitmap = cpu_to_le16(tmp_cap);
+
+	return 0;
+}
+
+/*
+ * This function handles the command response of ad-hoc start and
+ * ad-hoc join.
+ *
+ * The function generates a device-connected event to notify
+ * the applications, in case of successful ad-hoc start/join, and
+ * saves the beacon buffer.
+ */
+int mwifiex_ret_802_11_ad_hoc(struct mwifiex_private *priv,
+			      struct host_cmd_ds_command *resp)
+{
+	int ret = 0;
+	struct mwifiex_adapter *adapter = priv->adapter;
+	struct host_cmd_ds_802_11_ad_hoc_result *adhoc_result;
+	struct mwifiex_bssdescriptor *bss_desc;
+
+	adhoc_result = &resp->params.adhoc_result;
+
+	bss_desc = priv->attempted_bss_desc;
+
+	/* Join result code 0 --> SUCCESS */
+	if (le16_to_cpu(resp->result)) {
+		dev_err(priv->adapter->dev, "ADHOC_RESP: failed\n");
+		if (priv->media_connected)
+			mwifiex_reset_connect_state(priv);
+
+		memset(&priv->curr_bss_params.bss_descriptor,
+		       0x00, sizeof(struct mwifiex_bssdescriptor));
+
+		ret = -1;
+		goto done;
+	}
+
+	/* Send a Media Connected event, according to the Spec */
+	priv->media_connected = true;
+
+	if (le16_to_cpu(resp->command) == HostCmd_CMD_802_11_AD_HOC_START) {
+		dev_dbg(priv->adapter->dev, "info: ADHOC_S_RESP %s\n",
+			bss_desc->ssid.ssid);
+
+		/* Update the created network descriptor with the new BSSID */
+		memcpy(bss_desc->mac_address,
+		       adhoc_result->bssid, ETH_ALEN);
+
+		priv->adhoc_state = ADHOC_STARTED;
+	} else {
+		/*
+		 * Now the join cmd should be successful.
+		 * If BSSID has changed use SSID to compare instead of BSSID
+		 */
+		dev_dbg(priv->adapter->dev, "info: ADHOC_J_RESP %s\n",
+			bss_desc->ssid.ssid);
+
+		/*
+		 * Make a copy of current BSSID descriptor, only needed for
+		 * join since the current descriptor is already being used
+		 * for adhoc start
+		 */
+		memcpy(&priv->curr_bss_params.bss_descriptor,
+		       bss_desc, sizeof(struct mwifiex_bssdescriptor));
+
+		priv->adhoc_state = ADHOC_JOINED;
+	}
+
+	dev_dbg(priv->adapter->dev, "info: ADHOC_RESP: channel = %d\n",
+		priv->adhoc_channel);
+	dev_dbg(priv->adapter->dev, "info: ADHOC_RESP: BSSID = %pM\n",
+		priv->curr_bss_params.bss_descriptor.mac_address);
+
+	if (!netif_carrier_ok(priv->netdev))
+		netif_carrier_on(priv->netdev);
+	if (netif_queue_stopped(priv->netdev))
+		netif_wake_queue(priv->netdev);
+
+	mwifiex_save_curr_bcn(priv);
+
+done:
+	/* Need to indicate IOCTL complete */
+	if (adapter->curr_cmd->wait_q_enabled) {
+		if (ret)
+			adapter->cmd_wait_q.status = -1;
+		else
+			adapter->cmd_wait_q.status = 0;
+
+	}
+
+	return ret;
+}
+
+/*
+ * This function associates to a specific BSS discovered in a scan.
+ *
+ * It clears any past association response stored for application
+ * retrieval and calls the command preparation routine to send the
+ * command to firmware.
+ */
+int mwifiex_associate(struct mwifiex_private *priv,
+		      struct mwifiex_bssdescriptor *bss_desc)
+{
+	u8 current_bssid[ETH_ALEN];
+
+	/* Return error if the adapter or table entry is not marked as infra */
+	if ((priv->bss_mode != NL80211_IFTYPE_STATION) ||
+	    (bss_desc->bss_mode != NL80211_IFTYPE_STATION))
+		return -1;
+
+	memcpy(&current_bssid,
+	       &priv->curr_bss_params.bss_descriptor.mac_address,
+	       sizeof(current_bssid));
+
+	/* Clear any past association response stored for application
+	   retrieval */
+	priv->assoc_rsp_size = 0;
+
+	return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_ASSOCIATE,
+				    HostCmd_ACT_GEN_SET, 0, bss_desc);
+}
+
+/*
+ * This function starts an ad-hoc network.
+ *
+ * It calls the command preparation routine to send the command to firmware.
+ */
+int
+mwifiex_adhoc_start(struct mwifiex_private *priv,
+		    struct cfg80211_ssid *adhoc_ssid)
+{
+	dev_dbg(priv->adapter->dev, "info: Adhoc Channel = %d\n",
+		priv->adhoc_channel);
+	dev_dbg(priv->adapter->dev, "info: curr_bss_params.channel = %d\n",
+		priv->curr_bss_params.bss_descriptor.channel);
+	dev_dbg(priv->adapter->dev, "info: curr_bss_params.band = %d\n",
+		priv->curr_bss_params.band);
+
+	return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_AD_HOC_START,
+				    HostCmd_ACT_GEN_SET, 0, adhoc_ssid);
+}
+
+/*
+ * This function joins an ad-hoc network found in a previous scan.
+ *
+ * It calls the command preparation routine to send the command to firmware,
+ * if already not connected to the requested SSID.
+ */
+int mwifiex_adhoc_join(struct mwifiex_private *priv,
+		       struct mwifiex_bssdescriptor *bss_desc)
+{
+	dev_dbg(priv->adapter->dev, "info: adhoc join: curr_bss ssid =%s\n",
+		priv->curr_bss_params.bss_descriptor.ssid.ssid);
+	dev_dbg(priv->adapter->dev, "info: adhoc join: curr_bss ssid_len =%u\n",
+		priv->curr_bss_params.bss_descriptor.ssid.ssid_len);
+	dev_dbg(priv->adapter->dev, "info: adhoc join: ssid =%s\n",
+		bss_desc->ssid.ssid);
+	dev_dbg(priv->adapter->dev, "info: adhoc join: ssid_len =%u\n",
+		bss_desc->ssid.ssid_len);
+
+	/* Check if the requested SSID is already joined */
+	if (priv->curr_bss_params.bss_descriptor.ssid.ssid_len &&
+	    !mwifiex_ssid_cmp(&bss_desc->ssid,
+			      &priv->curr_bss_params.bss_descriptor.ssid) &&
+	    (priv->curr_bss_params.bss_descriptor.bss_mode ==
+							NL80211_IFTYPE_ADHOC)) {
+		dev_dbg(priv->adapter->dev, "info: ADHOC_J_CMD: new ad-hoc SSID"
+			" is the same as current; not attempting to re-join\n");
+		return -1;
+	}
+
+	dev_dbg(priv->adapter->dev, "info: curr_bss_params.channel = %d\n",
+		priv->curr_bss_params.bss_descriptor.channel);
+	dev_dbg(priv->adapter->dev, "info: curr_bss_params.band = %c\n",
+		priv->curr_bss_params.band);
+
+	return mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_AD_HOC_JOIN,
+				    HostCmd_ACT_GEN_SET, 0, bss_desc);
+}
+
+/*
+ * This function deauthenticates/disconnects from infra network by sending
+ * deauthentication request.
+ */
+static int mwifiex_deauthenticate_infra(struct mwifiex_private *priv, u8 *mac)
+{
+	u8 mac_address[ETH_ALEN];
+	int ret;
+	u8 zero_mac[ETH_ALEN] = { 0, 0, 0, 0, 0, 0 };
+
+	if (mac) {
+		if (!memcmp(mac, zero_mac, sizeof(zero_mac)))
+			memcpy((u8 *) &mac_address,
+			       (u8 *) &priv->curr_bss_params.bss_descriptor.
+			       mac_address, ETH_ALEN);
+		else
+			memcpy((u8 *) &mac_address, (u8 *) mac, ETH_ALEN);
+	} else {
+		memcpy((u8 *) &mac_address, (u8 *) &priv->curr_bss_params.
+		       bss_descriptor.mac_address, ETH_ALEN);
+	}
+
+	ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_DEAUTHENTICATE,
+				    HostCmd_ACT_GEN_SET, 0, &mac_address);
+
+	return ret;
+}
+
+/*
+ * This function deauthenticates/disconnects from a BSS.
+ *
+ * In case of infra made, it sends deauthentication request, and
+ * in case of ad-hoc mode, a stop network request is sent to the firmware.
+ */
+int mwifiex_deauthenticate(struct mwifiex_private *priv, u8 *mac)
+{
+	int ret = 0;
+
+	if (priv->media_connected) {
+		if (priv->bss_mode == NL80211_IFTYPE_STATION) {
+			ret = mwifiex_deauthenticate_infra(priv, mac);
+		} else if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
+			ret = mwifiex_send_cmd_sync(priv,
+						HostCmd_CMD_802_11_AD_HOC_STOP,
+						HostCmd_ACT_GEN_SET, 0, NULL);
+		}
+	}
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(mwifiex_deauthenticate);
+
+/*
+ * This function converts band to radio type used in channel TLV.
+ */
+u8
+mwifiex_band_to_radio_type(u8 band)
+{
+	switch (band) {
+	case BAND_A:
+	case BAND_AN:
+	case BAND_A | BAND_AN:
+		return HostCmd_SCAN_RADIO_TYPE_A;
+	case BAND_B:
+	case BAND_G:
+	case BAND_B | BAND_G:
+	default:
+		return HostCmd_SCAN_RADIO_TYPE_BG;
+	}
+}