Linux-libre 4.5-gnu

1 files changed, 0 insertions, 751 deletions

diff --git a/drivers/net/wireless/mwifiex/util.c b/drivers/net/wireless/mwifiex/util.c
deleted file mode 100644
index 0cec8a644..000000000
--- a/drivers/net/wireless/mwifiex/util.c
+++ /dev/null
@@ -1,751 +0,0 @@
-/*
- * Marvell Wireless LAN device driver: utility functions
- *
- * Copyright (C) 2011-2014, 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"
-
-static struct mwifiex_debug_data items[] = {
-	{"debug_mask", item_size(debug_mask),
-	 item_addr(debug_mask), 1},
-	{"int_counter", item_size(int_counter),
-	 item_addr(int_counter), 1},
-	{"wmm_ac_vo", item_size(packets_out[WMM_AC_VO]),
-	 item_addr(packets_out[WMM_AC_VO]), 1},
-	{"wmm_ac_vi", item_size(packets_out[WMM_AC_VI]),
-	 item_addr(packets_out[WMM_AC_VI]), 1},
-	{"wmm_ac_be", item_size(packets_out[WMM_AC_BE]),
-	 item_addr(packets_out[WMM_AC_BE]), 1},
-	{"wmm_ac_bk", item_size(packets_out[WMM_AC_BK]),
-	 item_addr(packets_out[WMM_AC_BK]), 1},
-	{"tx_buf_size", item_size(tx_buf_size),
-	 item_addr(tx_buf_size), 1},
-	{"curr_tx_buf_size", item_size(curr_tx_buf_size),
-	 item_addr(curr_tx_buf_size), 1},
-	{"ps_mode", item_size(ps_mode),
-	 item_addr(ps_mode), 1},
-	{"ps_state", item_size(ps_state),
-	 item_addr(ps_state), 1},
-	{"is_deep_sleep", item_size(is_deep_sleep),
-	 item_addr(is_deep_sleep), 1},
-	{"wakeup_dev_req", item_size(pm_wakeup_card_req),
-	 item_addr(pm_wakeup_card_req), 1},
-	{"wakeup_tries", item_size(pm_wakeup_fw_try),
-	 item_addr(pm_wakeup_fw_try), 1},
-	{"hs_configured", item_size(is_hs_configured),
-	 item_addr(is_hs_configured), 1},
-	{"hs_activated", item_size(hs_activated),
-	 item_addr(hs_activated), 1},
-	{"num_tx_timeout", item_size(num_tx_timeout),
-	 item_addr(num_tx_timeout), 1},
-	{"is_cmd_timedout", item_size(is_cmd_timedout),
-	 item_addr(is_cmd_timedout), 1},
-	{"timeout_cmd_id", item_size(timeout_cmd_id),
-	 item_addr(timeout_cmd_id), 1},
-	{"timeout_cmd_act", item_size(timeout_cmd_act),
-	 item_addr(timeout_cmd_act), 1},
-	{"last_cmd_id", item_size(last_cmd_id),
-	 item_addr(last_cmd_id), DBG_CMD_NUM},
-	{"last_cmd_act", item_size(last_cmd_act),
-	 item_addr(last_cmd_act), DBG_CMD_NUM},
-	{"last_cmd_index", item_size(last_cmd_index),
-	 item_addr(last_cmd_index), 1},
-	{"last_cmd_resp_id", item_size(last_cmd_resp_id),
-	 item_addr(last_cmd_resp_id), DBG_CMD_NUM},
-	{"last_cmd_resp_index", item_size(last_cmd_resp_index),
-	 item_addr(last_cmd_resp_index), 1},
-	{"last_event", item_size(last_event),
-	 item_addr(last_event), DBG_CMD_NUM},
-	{"last_event_index", item_size(last_event_index),
-	 item_addr(last_event_index), 1},
-	{"num_cmd_h2c_fail", item_size(num_cmd_host_to_card_failure),
-	 item_addr(num_cmd_host_to_card_failure), 1},
-	{"num_cmd_sleep_cfm_fail",
-	 item_size(num_cmd_sleep_cfm_host_to_card_failure),
-	 item_addr(num_cmd_sleep_cfm_host_to_card_failure), 1},
-	{"num_tx_h2c_fail", item_size(num_tx_host_to_card_failure),
-	 item_addr(num_tx_host_to_card_failure), 1},
-	{"num_evt_deauth", item_size(num_event_deauth),
-	 item_addr(num_event_deauth), 1},
-	{"num_evt_disassoc", item_size(num_event_disassoc),
-	 item_addr(num_event_disassoc), 1},
-	{"num_evt_link_lost", item_size(num_event_link_lost),
-	 item_addr(num_event_link_lost), 1},
-	{"num_cmd_deauth", item_size(num_cmd_deauth),
-	 item_addr(num_cmd_deauth), 1},
-	{"num_cmd_assoc_ok", item_size(num_cmd_assoc_success),
-	 item_addr(num_cmd_assoc_success), 1},
-	{"num_cmd_assoc_fail", item_size(num_cmd_assoc_failure),
-	 item_addr(num_cmd_assoc_failure), 1},
-	{"cmd_sent", item_size(cmd_sent),
-	 item_addr(cmd_sent), 1},
-	{"data_sent", item_size(data_sent),
-	 item_addr(data_sent), 1},
-	{"cmd_resp_received", item_size(cmd_resp_received),
-	 item_addr(cmd_resp_received), 1},
-	{"event_received", item_size(event_received),
-	 item_addr(event_received), 1},
-
-	/* variables defined in struct mwifiex_adapter */
-	{"cmd_pending", adapter_item_size(cmd_pending),
-	 adapter_item_addr(cmd_pending), 1},
-	{"tx_pending", adapter_item_size(tx_pending),
-	 adapter_item_addr(tx_pending), 1},
-	{"rx_pending", adapter_item_size(rx_pending),
-	 adapter_item_addr(rx_pending), 1},
-};
-
-static int num_of_items = ARRAY_SIZE(items);
-
-/*
- * Firmware initialization complete callback handler.
- *
- * This function wakes up the function waiting on the init
- * wait queue for the firmware initialization to complete.
- */
-int mwifiex_init_fw_complete(struct mwifiex_adapter *adapter)
-{
-
-	if (adapter->hw_status == MWIFIEX_HW_STATUS_READY)
-		if (adapter->if_ops.init_fw_port)
-			adapter->if_ops.init_fw_port(adapter);
-
-	adapter->init_wait_q_woken = true;
-	wake_up_interruptible(&adapter->init_wait_q);
-	return 0;
-}
-
-/*
- * Firmware shutdown complete callback handler.
- *
- * This function sets the hardware status to not ready and wakes up
- * the function waiting on the init wait queue for the firmware
- * shutdown to complete.
- */
-int mwifiex_shutdown_fw_complete(struct mwifiex_adapter *adapter)
-{
-	adapter->hw_status = MWIFIEX_HW_STATUS_NOT_READY;
-	adapter->init_wait_q_woken = true;
-	wake_up_interruptible(&adapter->init_wait_q);
-	return 0;
-}
-
-/*
- * This function sends init/shutdown command
- * to firmware.
- */
-int mwifiex_init_shutdown_fw(struct mwifiex_private *priv,
-			     u32 func_init_shutdown)
-{
-	u16 cmd;
-
-	if (func_init_shutdown == MWIFIEX_FUNC_INIT) {
-		cmd = HostCmd_CMD_FUNC_INIT;
-	} else if (func_init_shutdown == MWIFIEX_FUNC_SHUTDOWN) {
-		cmd = HostCmd_CMD_FUNC_SHUTDOWN;
-	} else {
-		mwifiex_dbg(priv->adapter, ERROR,
-			    "unsupported parameter\n");
-		return -1;
-	}
-
-	return mwifiex_send_cmd(priv, cmd, HostCmd_ACT_GEN_SET, 0, NULL, true);
-}
-EXPORT_SYMBOL_GPL(mwifiex_init_shutdown_fw);
-
-/*
- * IOCTL request handler to set/get debug information.
- *
- * This function collates/sets the information from/to different driver
- * structures.
- */
-int mwifiex_get_debug_info(struct mwifiex_private *priv,
-			   struct mwifiex_debug_info *info)
-{
-	struct mwifiex_adapter *adapter = priv->adapter;
-
-	if (info) {
-		info->debug_mask = adapter->debug_mask;
-		memcpy(info->packets_out,
-		       priv->wmm.packets_out,
-		       sizeof(priv->wmm.packets_out));
-		info->curr_tx_buf_size = (u32) adapter->curr_tx_buf_size;
-		info->tx_buf_size = (u32) adapter->tx_buf_size;
-		info->rx_tbl_num = mwifiex_get_rx_reorder_tbl(priv,
-							      info->rx_tbl);
-		info->tx_tbl_num = mwifiex_get_tx_ba_stream_tbl(priv,
-								info->tx_tbl);
-		info->tdls_peer_num = mwifiex_get_tdls_list(priv,
-							    info->tdls_list);
-		info->ps_mode = adapter->ps_mode;
-		info->ps_state = adapter->ps_state;
-		info->is_deep_sleep = adapter->is_deep_sleep;
-		info->pm_wakeup_card_req = adapter->pm_wakeup_card_req;
-		info->pm_wakeup_fw_try = adapter->pm_wakeup_fw_try;
-		info->is_hs_configured = adapter->is_hs_configured;
-		info->hs_activated = adapter->hs_activated;
-		info->is_cmd_timedout = adapter->is_cmd_timedout;
-		info->num_cmd_host_to_card_failure
-				= adapter->dbg.num_cmd_host_to_card_failure;
-		info->num_cmd_sleep_cfm_host_to_card_failure
-			= adapter->dbg.num_cmd_sleep_cfm_host_to_card_failure;
-		info->num_tx_host_to_card_failure
-				= adapter->dbg.num_tx_host_to_card_failure;
-		info->num_event_deauth = adapter->dbg.num_event_deauth;
-		info->num_event_disassoc = adapter->dbg.num_event_disassoc;
-		info->num_event_link_lost = adapter->dbg.num_event_link_lost;
-		info->num_cmd_deauth = adapter->dbg.num_cmd_deauth;
-		info->num_cmd_assoc_success =
-					adapter->dbg.num_cmd_assoc_success;
-		info->num_cmd_assoc_failure =
-					adapter->dbg.num_cmd_assoc_failure;
-		info->num_tx_timeout = adapter->dbg.num_tx_timeout;
-		info->timeout_cmd_id = adapter->dbg.timeout_cmd_id;
-		info->timeout_cmd_act = adapter->dbg.timeout_cmd_act;
-		memcpy(info->last_cmd_id, adapter->dbg.last_cmd_id,
-		       sizeof(adapter->dbg.last_cmd_id));
-		memcpy(info->last_cmd_act, adapter->dbg.last_cmd_act,
-		       sizeof(adapter->dbg.last_cmd_act));
-		info->last_cmd_index = adapter->dbg.last_cmd_index;
-		memcpy(info->last_cmd_resp_id, adapter->dbg.last_cmd_resp_id,
-		       sizeof(adapter->dbg.last_cmd_resp_id));
-		info->last_cmd_resp_index = adapter->dbg.last_cmd_resp_index;
-		memcpy(info->last_event, adapter->dbg.last_event,
-		       sizeof(adapter->dbg.last_event));
-		info->last_event_index = adapter->dbg.last_event_index;
-		info->data_sent = adapter->data_sent;
-		info->cmd_sent = adapter->cmd_sent;
-		info->cmd_resp_received = adapter->cmd_resp_received;
-	}
-
-	return 0;
-}
-
-int mwifiex_debug_info_to_buffer(struct mwifiex_private *priv, char *buf,
-				 struct mwifiex_debug_info *info)
-{
-	char *p = buf;
-	struct mwifiex_debug_data *d = &items[0];
-	size_t size, addr;
-	long val;
-	int i, j;
-
-	if (!info)
-		return 0;
-
-	for (i = 0; i < num_of_items; i++) {
-		p += sprintf(p, "%s=", d[i].name);
-
-		size = d[i].size / d[i].num;
-
-		if (i < (num_of_items - 3))
-			addr = d[i].addr + (size_t)info;
-		else /* The last 3 items are struct mwifiex_adapter variables */
-			addr = d[i].addr + (size_t)priv->adapter;
-
-		for (j = 0; j < d[i].num; j++) {
-			switch (size) {
-			case 1:
-				val = *((u8 *)addr);
-				break;
-			case 2:
-				val = *((u16 *)addr);
-				break;
-			case 4:
-				val = *((u32 *)addr);
-				break;
-			case 8:
-				val = *((long long *)addr);
-				break;
-			default:
-				val = -1;
-				break;
-			}
-
-			p += sprintf(p, "%#lx ", val);
-			addr += size;
-		}
-
-		p += sprintf(p, "\n");
-	}
-
-	if (info->tx_tbl_num) {
-		p += sprintf(p, "Tx BA stream table:\n");
-		for (i = 0; i < info->tx_tbl_num; i++)
-			p += sprintf(p, "tid = %d, ra = %pM\n",
-				     info->tx_tbl[i].tid, info->tx_tbl[i].ra);
-	}
-
-	if (info->rx_tbl_num) {
-		p += sprintf(p, "Rx reorder table:\n");
-		for (i = 0; i < info->rx_tbl_num; i++) {
-			p += sprintf(p, "tid = %d, ta = %pM, ",
-				     info->rx_tbl[i].tid,
-				     info->rx_tbl[i].ta);
-			p += sprintf(p, "start_win = %d, ",
-				     info->rx_tbl[i].start_win);
-			p += sprintf(p, "win_size = %d, buffer: ",
-				     info->rx_tbl[i].win_size);
-
-			for (j = 0; j < info->rx_tbl[i].win_size; j++)
-				p += sprintf(p, "%c ",
-					     info->rx_tbl[i].buffer[j] ?
-					     '1' : '0');
-
-			p += sprintf(p, "\n");
-		}
-	}
-
-	if (info->tdls_peer_num) {
-		p += sprintf(p, "TDLS peer table:\n");
-		for (i = 0; i < info->tdls_peer_num; i++) {
-			p += sprintf(p, "peer = %pM",
-				     info->tdls_list[i].peer_addr);
-			p += sprintf(p, "\n");
-		}
-	}
-
-	return p - buf;
-}
-
-static int
-mwifiex_parse_mgmt_packet(struct mwifiex_private *priv, u8 *payload, u16 len,
-			  struct rxpd *rx_pd)
-{
-	u16 stype;
-	u8 category, action_code, *addr2;
-	struct ieee80211_hdr *ieee_hdr = (void *)payload;
-
-	stype = (le16_to_cpu(ieee_hdr->frame_control) & IEEE80211_FCTL_STYPE);
-
-	switch (stype) {
-	case IEEE80211_STYPE_ACTION:
-		category = *(payload + sizeof(struct ieee80211_hdr));
-		switch (category) {
-		case WLAN_CATEGORY_PUBLIC:
-			action_code = *(payload + sizeof(struct ieee80211_hdr)
-					+ 1);
-			if (action_code == WLAN_PUB_ACTION_TDLS_DISCOVER_RES) {
-				addr2 = ieee_hdr->addr2;
-				mwifiex_dbg(priv->adapter, INFO,
-					    "TDLS discovery response %pM nf=%d, snr=%d\n",
-					    addr2, rx_pd->nf, rx_pd->snr);
-				mwifiex_auto_tdls_update_peer_signal(priv,
-								     addr2,
-								     rx_pd->snr,
-								     rx_pd->nf);
-			}
-			break;
-		case WLAN_CATEGORY_BACK:
-			/*we dont indicate BACK action frames to cfg80211*/
-			mwifiex_dbg(priv->adapter, INFO,
-				    "drop BACK action frames");
-			return -1;
-		default:
-			mwifiex_dbg(priv->adapter, INFO,
-				    "unknown public action frame category %d\n",
-				    category);
-		}
-	default:
-		mwifiex_dbg(priv->adapter, INFO,
-		    "unknown mgmt frame subtype %#x\n", stype);
-		return 0;
-	}
-
-	return 0;
-}
-/*
- * This function processes the received management packet and send it
- * to the kernel.
- */
-int
-mwifiex_process_mgmt_packet(struct mwifiex_private *priv,
-			    struct sk_buff *skb)
-{
-	struct rxpd *rx_pd;
-	u16 pkt_len;
-	struct ieee80211_hdr *ieee_hdr;
-
-	if (!skb)
-		return -1;
-
-	if (!priv->mgmt_frame_mask ||
-	    priv->wdev.iftype == NL80211_IFTYPE_UNSPECIFIED) {
-		mwifiex_dbg(priv->adapter, ERROR,
-			    "do not receive mgmt frames on uninitialized intf");
-		return -1;
-	}
-
-	rx_pd = (struct rxpd *)skb->data;
-
-	skb_pull(skb, le16_to_cpu(rx_pd->rx_pkt_offset));
-	skb_pull(skb, sizeof(pkt_len));
-
-	pkt_len = le16_to_cpu(rx_pd->rx_pkt_length);
-
-	ieee_hdr = (void *)skb->data;
-	if (ieee80211_is_mgmt(ieee_hdr->frame_control)) {
-		if (mwifiex_parse_mgmt_packet(priv, (u8 *)ieee_hdr,
-					      pkt_len, rx_pd))
-			return -1;
-	}
-	/* Remove address4 */
-	memmove(skb->data + sizeof(struct ieee80211_hdr_3addr),
-		skb->data + sizeof(struct ieee80211_hdr),
-		pkt_len - sizeof(struct ieee80211_hdr));
-
-	pkt_len -= ETH_ALEN + sizeof(pkt_len);
-	rx_pd->rx_pkt_length = cpu_to_le16(pkt_len);
-
-	cfg80211_rx_mgmt(&priv->wdev, priv->roc_cfg.chan.center_freq,
-			 CAL_RSSI(rx_pd->snr, rx_pd->nf), skb->data, pkt_len,
-			 0);
-
-	return 0;
-}
-
-/*
- * This function processes the received packet before sending it to the
- * kernel.
- *
- * It extracts the SKB from the received buffer and sends it to kernel.
- * In case the received buffer does not contain the data in SKB format,
- * the function creates a blank SKB, fills it with the data from the
- * received buffer and then sends this new SKB to the kernel.
- */
-int mwifiex_recv_packet(struct mwifiex_private *priv, struct sk_buff *skb)
-{
-	struct mwifiex_sta_node *src_node;
-	struct ethhdr *p_ethhdr;
-
-	if (!skb)
-		return -1;
-
-	priv->stats.rx_bytes += skb->len;
-	priv->stats.rx_packets++;
-
-	if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) {
-		p_ethhdr = (void *)skb->data;
-		src_node = mwifiex_get_sta_entry(priv, p_ethhdr->h_source);
-		if (src_node) {
-			src_node->stats.last_rx = jiffies;
-			src_node->stats.rx_bytes += skb->len;
-			src_node->stats.rx_packets++;
-		}
-	}
-
-	skb->dev = priv->netdev;
-	skb->protocol = eth_type_trans(skb, priv->netdev);
-	skb->ip_summed = CHECKSUM_NONE;
-
-	/* This is required only in case of 11n and USB/PCIE as we alloc
-	 * a buffer of 4K only if its 11N (to be able to receive 4K
-	 * AMSDU packets). In case of SD we allocate buffers based
-	 * on the size of packet and hence this is not needed.
-	 *
-	 * Modifying the truesize here as our allocation for each
-	 * skb is 4K but we only receive 2K packets and this cause
-	 * the kernel to start dropping packets in case where
-	 * application has allocated buffer based on 2K size i.e.
-	 * if there a 64K packet received (in IP fragments and
-	 * application allocates 64K to receive this packet but
-	 * this packet would almost double up because we allocate
-	 * each 1.5K fragment in 4K and pass it up. As soon as the
-	 * 64K limit hits kernel will start to drop rest of the
-	 * fragments. Currently we fail the Filesndl-ht.scr script
-	 * for UDP, hence this fix
-	 */
-	if ((priv->adapter->iface_type == MWIFIEX_USB ||
-	     priv->adapter->iface_type == MWIFIEX_PCIE) &&
-	    (skb->truesize > MWIFIEX_RX_DATA_BUF_SIZE))
-		skb->truesize += (skb->len - MWIFIEX_RX_DATA_BUF_SIZE);
-
-	if (in_interrupt())
-		netif_rx(skb);
-	else
-		netif_rx_ni(skb);
-
-	return 0;
-}
-
-/*
- * IOCTL completion callback handler.
- *
- * This function is called when a pending IOCTL is completed.
- *
- * If work queue support is enabled, the function wakes up the
- * corresponding waiting function. Otherwise, it processes the
- * IOCTL response and frees the response buffer.
- */
-int mwifiex_complete_cmd(struct mwifiex_adapter *adapter,
-			 struct cmd_ctrl_node *cmd_node)
-{
-	WARN_ON(!cmd_node->wait_q_enabled);
-	mwifiex_dbg(adapter, CMD, "cmd completed: status=%d\n",
-		    adapter->cmd_wait_q.status);
-
-	*cmd_node->condition = true;
-	wake_up_interruptible(&adapter->cmd_wait_q.wait);
-
-	return 0;
-}
-
-/* This function will return the pointer to station entry in station list
- * table which matches specified mac address.
- * This function should be called after acquiring RA list spinlock.
- * NULL is returned if station entry is not found in associated STA list.
- */
-struct mwifiex_sta_node *
-mwifiex_get_sta_entry(struct mwifiex_private *priv, const u8 *mac)
-{
-	struct mwifiex_sta_node *node;
-
-	if (!mac)
-		return NULL;
-
-	list_for_each_entry(node, &priv->sta_list, list) {
-		if (!memcmp(node->mac_addr, mac, ETH_ALEN))
-			return node;
-	}
-
-	return NULL;
-}
-
-static struct mwifiex_sta_node *
-mwifiex_get_tdls_sta_entry(struct mwifiex_private *priv, u8 status)
-{
-	struct mwifiex_sta_node *node;
-
-	list_for_each_entry(node, &priv->sta_list, list) {
-		if (node->tdls_status == status)
-			return node;
-	}
-
-	return NULL;
-}
-
-/* If tdls channel switching is on-going, tx data traffic should be
- * blocked until the switching stage completed.
- */
-u8 mwifiex_is_tdls_chan_switching(struct mwifiex_private *priv)
-{
-	struct mwifiex_sta_node *sta_ptr;
-
-	if (!priv || !ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info))
-		return false;
-
-	sta_ptr = mwifiex_get_tdls_sta_entry(priv, TDLS_CHAN_SWITCHING);
-	if (sta_ptr)
-		return true;
-
-	return false;
-}
-
-u8 mwifiex_is_tdls_off_chan(struct mwifiex_private *priv)
-{
-	struct mwifiex_sta_node *sta_ptr;
-
-	if (!priv || !ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info))
-		return false;
-
-	sta_ptr = mwifiex_get_tdls_sta_entry(priv, TDLS_IN_OFF_CHAN);
-	if (sta_ptr)
-		return true;
-
-	return false;
-}
-
-/* If tdls channel switching is on-going or tdls operate on off-channel,
- * cmd path should be blocked until tdls switched to base-channel.
- */
-u8 mwifiex_is_send_cmd_allowed(struct mwifiex_private *priv)
-{
-	if (!priv || !ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info))
-		return true;
-
-	if (mwifiex_is_tdls_chan_switching(priv) ||
-	    mwifiex_is_tdls_off_chan(priv))
-		return false;
-
-	return true;
-}
-
-/* This function will add a sta_node entry to associated station list
- * table with the given mac address.
- * If entry exist already, existing entry is returned.
- * If received mac address is NULL, NULL is returned.
- */
-struct mwifiex_sta_node *
-mwifiex_add_sta_entry(struct mwifiex_private *priv, const u8 *mac)
-{
-	struct mwifiex_sta_node *node;
-	unsigned long flags;
-
-	if (!mac)
-		return NULL;
-
-	spin_lock_irqsave(&priv->sta_list_spinlock, flags);
-	node = mwifiex_get_sta_entry(priv, mac);
-	if (node)
-		goto done;
-
-	node = kzalloc(sizeof(*node), GFP_ATOMIC);
-	if (!node)
-		goto done;
-
-	memcpy(node->mac_addr, mac, ETH_ALEN);
-	list_add_tail(&node->list, &priv->sta_list);
-
-done:
-	spin_unlock_irqrestore(&priv->sta_list_spinlock, flags);
-	return node;
-}
-
-/* This function will search for HT IE in association request IEs
- * and set station HT parameters accordingly.
- */
-void
-mwifiex_set_sta_ht_cap(struct mwifiex_private *priv, const u8 *ies,
-		       int ies_len, struct mwifiex_sta_node *node)
-{
-	struct ieee_types_header *ht_cap_ie;
-	const struct ieee80211_ht_cap *ht_cap;
-
-	if (!ies)
-		return;
-
-	ht_cap_ie = (void *)cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, ies,
-					     ies_len);
-	if (ht_cap_ie) {
-		ht_cap = (void *)(ht_cap_ie + 1);
-		node->is_11n_enabled = 1;
-		node->max_amsdu = le16_to_cpu(ht_cap->cap_info) &
-				  IEEE80211_HT_CAP_MAX_AMSDU ?
-				  MWIFIEX_TX_DATA_BUF_SIZE_8K :
-				  MWIFIEX_TX_DATA_BUF_SIZE_4K;
-	} else {
-		node->is_11n_enabled = 0;
-	}
-
-	return;
-}
-
-/* This function will delete a station entry from station list */
-void mwifiex_del_sta_entry(struct mwifiex_private *priv, const u8 *mac)
-{
-	struct mwifiex_sta_node *node;
-	unsigned long flags;
-
-	spin_lock_irqsave(&priv->sta_list_spinlock, flags);
-
-	node = mwifiex_get_sta_entry(priv, mac);
-	if (node) {
-		list_del(&node->list);
-		kfree(node);
-	}
-
-	spin_unlock_irqrestore(&priv->sta_list_spinlock, flags);
-	return;
-}
-
-/* This function will delete all stations from associated station list. */
-void mwifiex_del_all_sta_list(struct mwifiex_private *priv)
-{
-	struct mwifiex_sta_node *node, *tmp;
-	unsigned long flags;
-
-	spin_lock_irqsave(&priv->sta_list_spinlock, flags);
-
-	list_for_each_entry_safe(node, tmp, &priv->sta_list, list) {
-		list_del(&node->list);
-		kfree(node);
-	}
-
-	INIT_LIST_HEAD(&priv->sta_list);
-	spin_unlock_irqrestore(&priv->sta_list_spinlock, flags);
-	return;
-}
-
-/* This function adds histogram data to histogram array*/
-void mwifiex_hist_data_add(struct mwifiex_private *priv,
-			   u8 rx_rate, s8 snr, s8 nflr)
-{
-	struct mwifiex_histogram_data *phist_data = priv->hist_data;
-
-	if (atomic_read(&phist_data->num_samples) > MWIFIEX_HIST_MAX_SAMPLES)
-		mwifiex_hist_data_reset(priv);
-	mwifiex_hist_data_set(priv, rx_rate, snr, nflr);
-}
-
-/* function to add histogram record */
-void mwifiex_hist_data_set(struct mwifiex_private *priv, u8 rx_rate, s8 snr,
-			   s8 nflr)
-{
-	struct mwifiex_histogram_data *phist_data = priv->hist_data;
-
-	atomic_inc(&phist_data->num_samples);
-	atomic_inc(&phist_data->rx_rate[rx_rate]);
-	atomic_inc(&phist_data->snr[snr]);
-	atomic_inc(&phist_data->noise_flr[128 + nflr]);
-	atomic_inc(&phist_data->sig_str[nflr - snr]);
-}
-
-/* function to reset histogram data during init/reset */
-void mwifiex_hist_data_reset(struct mwifiex_private *priv)
-{
-	int ix;
-	struct mwifiex_histogram_data *phist_data = priv->hist_data;
-
-	atomic_set(&phist_data->num_samples, 0);
-	for (ix = 0; ix < MWIFIEX_MAX_AC_RX_RATES; ix++)
-		atomic_set(&phist_data->rx_rate[ix], 0);
-	for (ix = 0; ix < MWIFIEX_MAX_SNR; ix++)
-		atomic_set(&phist_data->snr[ix], 0);
-	for (ix = 0; ix < MWIFIEX_MAX_NOISE_FLR; ix++)
-		atomic_set(&phist_data->noise_flr[ix], 0);
-	for (ix = 0; ix < MWIFIEX_MAX_SIG_STRENGTH; ix++)
-		atomic_set(&phist_data->sig_str[ix], 0);
-}
-
-void *mwifiex_alloc_dma_align_buf(int rx_len, gfp_t flags)
-{
-	struct sk_buff *skb;
-	int buf_len, pad;
-
-	buf_len = rx_len + MWIFIEX_RX_HEADROOM + MWIFIEX_DMA_ALIGN_SZ;
-
-	skb = __dev_alloc_skb(buf_len, flags);
-
-	if (!skb)
-		return NULL;
-
-	skb_reserve(skb, MWIFIEX_RX_HEADROOM);
-
-	pad = MWIFIEX_ALIGN_ADDR(skb->data, MWIFIEX_DMA_ALIGN_SZ) -
-	      (long)skb->data;
-
-	skb_reserve(skb, pad);
-
-	return skb;
-}
-EXPORT_SYMBOL_GPL(mwifiex_alloc_dma_align_buf);