mwifiex: move under marvell vendor directory

Part of reorganising wireless drivers directory and Kconfig.

Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

1 files changed, 0 insertions, 1531 deletions

diff --git a/drivers/net/wireless/mwifiex/wmm.c b/drivers/net/wireless/mwifiex/wmm.c
deleted file mode 100644
index acccd6734e3b..000000000000
--- a/drivers/net/wireless/mwifiex/wmm.c
+++ /dev/null
@@ -1,1531 +0,0 @@
-/*
- * Marvell Wireless LAN device driver: WMM
- *
- * 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"
-
-
-/* Maximum value FW can accept for driver delay in packet transmission */
-#define DRV_PKT_DELAY_TO_FW_MAX   512
-
-
-#define WMM_QUEUED_PACKET_LOWER_LIMIT   180
-
-#define WMM_QUEUED_PACKET_UPPER_LIMIT   200
-
-/* Offset for TOS field in the IP header */
-#define IPTOS_OFFSET 5
-
-static bool disable_tx_amsdu;
-module_param(disable_tx_amsdu, bool, 0644);
-
-/* WMM information IE */
-static const u8 wmm_info_ie[] = { WLAN_EID_VENDOR_SPECIFIC, 0x07,
-	0x00, 0x50, 0xf2, 0x02,
-	0x00, 0x01, 0x00
-};
-
-static const u8 wmm_aci_to_qidx_map[] = { WMM_AC_BE,
-	WMM_AC_BK,
-	WMM_AC_VI,
-	WMM_AC_VO
-};
-
-static u8 tos_to_tid[] = {
-	/* TID DSCP_P2 DSCP_P1 DSCP_P0 WMM_AC */
-	0x01,			/* 0 1 0 AC_BK */
-	0x02,			/* 0 0 0 AC_BK */
-	0x00,			/* 0 0 1 AC_BE */
-	0x03,			/* 0 1 1 AC_BE */
-	0x04,			/* 1 0 0 AC_VI */
-	0x05,			/* 1 0 1 AC_VI */
-	0x06,			/* 1 1 0 AC_VO */
-	0x07			/* 1 1 1 AC_VO */
-};
-
-static u8 ac_to_tid[4][2] = { {1, 2}, {0, 3}, {4, 5}, {6, 7} };
-
-/*
- * This function debug prints the priority parameters for a WMM AC.
- */
-static void
-mwifiex_wmm_ac_debug_print(const struct ieee_types_wmm_ac_parameters *ac_param)
-{
-	const char *ac_str[] = { "BK", "BE", "VI", "VO" };
-
-	pr_debug("info: WMM AC_%s: ACI=%d, ACM=%d, Aifsn=%d, "
-		 "EcwMin=%d, EcwMax=%d, TxopLimit=%d\n",
-		 ac_str[wmm_aci_to_qidx_map[(ac_param->aci_aifsn_bitmap
-					     & MWIFIEX_ACI) >> 5]],
-		 (ac_param->aci_aifsn_bitmap & MWIFIEX_ACI) >> 5,
-		 (ac_param->aci_aifsn_bitmap & MWIFIEX_ACM) >> 4,
-		 ac_param->aci_aifsn_bitmap & MWIFIEX_AIFSN,
-		 ac_param->ecw_bitmap & MWIFIEX_ECW_MIN,
-		 (ac_param->ecw_bitmap & MWIFIEX_ECW_MAX) >> 4,
-		 le16_to_cpu(ac_param->tx_op_limit));
-}
-
-/*
- * This function allocates a route address list.
- *
- * The function also initializes the list with the provided RA.
- */
-static struct mwifiex_ra_list_tbl *
-mwifiex_wmm_allocate_ralist_node(struct mwifiex_adapter *adapter, const u8 *ra)
-{
-	struct mwifiex_ra_list_tbl *ra_list;
-
-	ra_list = kzalloc(sizeof(struct mwifiex_ra_list_tbl), GFP_ATOMIC);
-	if (!ra_list)
-		return NULL;
-
-	INIT_LIST_HEAD(&ra_list->list);
-	skb_queue_head_init(&ra_list->skb_head);
-
-	memcpy(ra_list->ra, ra, ETH_ALEN);
-
-	ra_list->total_pkt_count = 0;
-
-	mwifiex_dbg(adapter, INFO, "info: allocated ra_list %p\n", ra_list);
-
-	return ra_list;
-}
-
-/* This function returns random no between 16 and 32 to be used as threshold
- * for no of packets after which BA setup is initiated.
- */
-static u8 mwifiex_get_random_ba_threshold(void)
-{
-	u64 ns;
-	/* setup ba_packet_threshold here random number between
-	 * [BA_SETUP_PACKET_OFFSET,
-	 * BA_SETUP_PACKET_OFFSET+BA_SETUP_MAX_PACKET_THRESHOLD-1]
-	 */
-	ns = ktime_get_ns();
-	ns += (ns >> 32) + (ns >> 16);
-
-	return ((u8)ns % BA_SETUP_MAX_PACKET_THRESHOLD) + BA_SETUP_PACKET_OFFSET;
-}
-
-/*
- * This function allocates and adds a RA list for all TIDs
- * with the given RA.
- */
-void mwifiex_ralist_add(struct mwifiex_private *priv, const u8 *ra)
-{
-	int i;
-	struct mwifiex_ra_list_tbl *ra_list;
-	struct mwifiex_adapter *adapter = priv->adapter;
-	struct mwifiex_sta_node *node;
-	unsigned long flags;
-
-
-	for (i = 0; i < MAX_NUM_TID; ++i) {
-		ra_list = mwifiex_wmm_allocate_ralist_node(adapter, ra);
-		mwifiex_dbg(adapter, INFO,
-			    "info: created ra_list %p\n", ra_list);
-
-		if (!ra_list)
-			break;
-
-		ra_list->is_11n_enabled = 0;
-		ra_list->tdls_link = false;
-		ra_list->ba_status = BA_SETUP_NONE;
-		ra_list->amsdu_in_ampdu = false;
-		if (!mwifiex_queuing_ra_based(priv)) {
-			if (mwifiex_is_tdls_link_setup
-				(mwifiex_get_tdls_link_status(priv, ra))) {
-				ra_list->tdls_link = true;
-				ra_list->is_11n_enabled =
-					mwifiex_tdls_peer_11n_enabled(priv, ra);
-			} else {
-				ra_list->is_11n_enabled = IS_11N_ENABLED(priv);
-			}
-		} else {
-			spin_lock_irqsave(&priv->sta_list_spinlock, flags);
-			node = mwifiex_get_sta_entry(priv, ra);
-			if (node)
-				ra_list->tx_paused = node->tx_pause;
-			ra_list->is_11n_enabled =
-				      mwifiex_is_sta_11n_enabled(priv, node);
-			if (ra_list->is_11n_enabled)
-				ra_list->max_amsdu = node->max_amsdu;
-			spin_unlock_irqrestore(&priv->sta_list_spinlock, flags);
-		}
-
-		mwifiex_dbg(adapter, DATA, "data: ralist %p: is_11n_enabled=%d\n",
-			    ra_list, ra_list->is_11n_enabled);
-
-		if (ra_list->is_11n_enabled) {
-			ra_list->ba_pkt_count = 0;
-			ra_list->ba_packet_thr =
-					      mwifiex_get_random_ba_threshold();
-		}
-		list_add_tail(&ra_list->list,
-			      &priv->wmm.tid_tbl_ptr[i].ra_list);
-	}
-}
-
-/*
- * This function sets the WMM queue priorities to their default values.
- */
-static void mwifiex_wmm_default_queue_priorities(struct mwifiex_private *priv)
-{
-	/* Default queue priorities: VO->VI->BE->BK */
-	priv->wmm.queue_priority[0] = WMM_AC_VO;
-	priv->wmm.queue_priority[1] = WMM_AC_VI;
-	priv->wmm.queue_priority[2] = WMM_AC_BE;
-	priv->wmm.queue_priority[3] = WMM_AC_BK;
-}
-
-/*
- * This function map ACs to TIDs.
- */
-static void
-mwifiex_wmm_queue_priorities_tid(struct mwifiex_private *priv)
-{
-	struct mwifiex_wmm_desc *wmm = &priv->wmm;
-	u8 *queue_priority = wmm->queue_priority;
-	int i;
-
-	for (i = 0; i < 4; ++i) {
-		tos_to_tid[7 - (i * 2)] = ac_to_tid[queue_priority[i]][1];
-		tos_to_tid[6 - (i * 2)] = ac_to_tid[queue_priority[i]][0];
-	}
-
-	for (i = 0; i < MAX_NUM_TID; ++i)
-		priv->tos_to_tid_inv[tos_to_tid[i]] = (u8)i;
-
-	atomic_set(&wmm->highest_queued_prio, HIGH_PRIO_TID);
-}
-
-/*
- * This function initializes WMM priority queues.
- */
-void
-mwifiex_wmm_setup_queue_priorities(struct mwifiex_private *priv,
-				   struct ieee_types_wmm_parameter *wmm_ie)
-{
-	u16 cw_min, avg_back_off, tmp[4];
-	u32 i, j, num_ac;
-	u8 ac_idx;
-
-	if (!wmm_ie || !priv->wmm_enabled) {
-		/* WMM is not enabled, just set the defaults and return */
-		mwifiex_wmm_default_queue_priorities(priv);
-		return;
-	}
-
-	mwifiex_dbg(priv->adapter, INFO,
-		    "info: WMM Parameter IE: version=%d,\t"
-		    "qos_info Parameter Set Count=%d, Reserved=%#x\n",
-		    wmm_ie->vend_hdr.version, wmm_ie->qos_info_bitmap &
-		    IEEE80211_WMM_IE_AP_QOSINFO_PARAM_SET_CNT_MASK,
-		    wmm_ie->reserved);
-
-	for (num_ac = 0; num_ac < ARRAY_SIZE(wmm_ie->ac_params); num_ac++) {
-		u8 ecw = wmm_ie->ac_params[num_ac].ecw_bitmap;
-		u8 aci_aifsn = wmm_ie->ac_params[num_ac].aci_aifsn_bitmap;
-		cw_min = (1 << (ecw & MWIFIEX_ECW_MIN)) - 1;
-		avg_back_off = (cw_min >> 1) + (aci_aifsn & MWIFIEX_AIFSN);
-
-		ac_idx = wmm_aci_to_qidx_map[(aci_aifsn & MWIFIEX_ACI) >> 5];
-		priv->wmm.queue_priority[ac_idx] = ac_idx;
-		tmp[ac_idx] = avg_back_off;
-
-		mwifiex_dbg(priv->adapter, INFO,
-			    "info: WMM: CWmax=%d CWmin=%d Avg Back-off=%d\n",
-			    (1 << ((ecw & MWIFIEX_ECW_MAX) >> 4)) - 1,
-			    cw_min, avg_back_off);
-		mwifiex_wmm_ac_debug_print(&wmm_ie->ac_params[num_ac]);
-	}
-
-	/* Bubble sort */
-	for (i = 0; i < num_ac; i++) {
-		for (j = 1; j < num_ac - i; j++) {
-			if (tmp[j - 1] > tmp[j]) {
-				swap(tmp[j - 1], tmp[j]);
-				swap(priv->wmm.queue_priority[j - 1],
-				     priv->wmm.queue_priority[j]);
-			} else if (tmp[j - 1] == tmp[j]) {
-				if (priv->wmm.queue_priority[j - 1]
-				    < priv->wmm.queue_priority[j])
-					swap(priv->wmm.queue_priority[j - 1],
-					     priv->wmm.queue_priority[j]);
-			}
-		}
-	}
-
-	mwifiex_wmm_queue_priorities_tid(priv);
-}
-
-/*
- * This function evaluates whether or not an AC is to be downgraded.
- *
- * In case the AC is not enabled, the highest AC is returned that is
- * enabled and does not require admission control.
- */
-static enum mwifiex_wmm_ac_e
-mwifiex_wmm_eval_downgrade_ac(struct mwifiex_private *priv,
-			      enum mwifiex_wmm_ac_e eval_ac)
-{
-	int down_ac;
-	enum mwifiex_wmm_ac_e ret_ac;
-	struct mwifiex_wmm_ac_status *ac_status;
-
-	ac_status = &priv->wmm.ac_status[eval_ac];
-
-	if (!ac_status->disabled)
-		/* Okay to use this AC, its enabled */
-		return eval_ac;
-
-	/* Setup a default return value of the lowest priority */
-	ret_ac = WMM_AC_BK;
-
-	/*
-	 *  Find the highest AC that is enabled and does not require
-	 *  admission control. The spec disallows downgrading to an AC,
-	 *  which is enabled due to a completed admission control.
-	 *  Unadmitted traffic is not to be sent on an AC with admitted
-	 *  traffic.
-	 */
-	for (down_ac = WMM_AC_BK; down_ac < eval_ac; down_ac++) {
-		ac_status = &priv->wmm.ac_status[down_ac];
-
-		if (!ac_status->disabled && !ac_status->flow_required)
-			/* AC is enabled and does not require admission
-			   control */
-			ret_ac = (enum mwifiex_wmm_ac_e) down_ac;
-	}
-
-	return ret_ac;
-}
-
-/*
- * This function downgrades WMM priority queue.
- */
-void
-mwifiex_wmm_setup_ac_downgrade(struct mwifiex_private *priv)
-{
-	int ac_val;
-
-	mwifiex_dbg(priv->adapter, INFO, "info: WMM: AC Priorities:\t"
-		    "BK(0), BE(1), VI(2), VO(3)\n");
-
-	if (!priv->wmm_enabled) {
-		/* WMM is not enabled, default priorities */
-		for (ac_val = WMM_AC_BK; ac_val <= WMM_AC_VO; ac_val++)
-			priv->wmm.ac_down_graded_vals[ac_val] =
-						(enum mwifiex_wmm_ac_e) ac_val;
-	} else {
-		for (ac_val = WMM_AC_BK; ac_val <= WMM_AC_VO; ac_val++) {
-			priv->wmm.ac_down_graded_vals[ac_val]
-				= mwifiex_wmm_eval_downgrade_ac(priv,
-						(enum mwifiex_wmm_ac_e) ac_val);
-			mwifiex_dbg(priv->adapter, INFO,
-				    "info: WMM: AC PRIO %d maps to %d\n",
-				    ac_val,
-				    priv->wmm.ac_down_graded_vals[ac_val]);
-		}
-	}
-}
-
-/*
- * This function converts the IP TOS field to an WMM AC
- * Queue assignment.
- */
-static enum mwifiex_wmm_ac_e
-mwifiex_wmm_convert_tos_to_ac(struct mwifiex_adapter *adapter, u32 tos)
-{
-	/* Map of TOS UP values to WMM AC */
-	const enum mwifiex_wmm_ac_e tos_to_ac[] = { WMM_AC_BE,
-		WMM_AC_BK,
-		WMM_AC_BK,
-		WMM_AC_BE,
-		WMM_AC_VI,
-		WMM_AC_VI,
-		WMM_AC_VO,
-		WMM_AC_VO
-	};
-
-	if (tos >= ARRAY_SIZE(tos_to_ac))
-		return WMM_AC_BE;
-
-	return tos_to_ac[tos];
-}
-
-/*
- * This function evaluates a given TID and downgrades it to a lower
- * TID if the WMM Parameter IE received from the AP indicates that the
- * AP is disabled (due to call admission control (ACM bit). Mapping
- * of TID to AC is taken care of internally.
- */
-u8 mwifiex_wmm_downgrade_tid(struct mwifiex_private *priv, u32 tid)
-{
-	enum mwifiex_wmm_ac_e ac, ac_down;
-	u8 new_tid;
-
-	ac = mwifiex_wmm_convert_tos_to_ac(priv->adapter, tid);
-	ac_down = priv->wmm.ac_down_graded_vals[ac];
-
-	/* Send the index to tid array, picking from the array will be
-	 * taken care by dequeuing function
-	 */
-	new_tid = ac_to_tid[ac_down][tid % 2];
-
-	return new_tid;
-}
-
-/*
- * This function initializes the WMM state information and the
- * WMM data path queues.
- */
-void
-mwifiex_wmm_init(struct mwifiex_adapter *adapter)
-{
-	int i, j;
-	struct mwifiex_private *priv;
-
-	for (j = 0; j < adapter->priv_num; ++j) {
-		priv = adapter->priv[j];
-		if (!priv)
-			continue;
-
-		for (i = 0; i < MAX_NUM_TID; ++i) {
-			if (!disable_tx_amsdu &&
-			    adapter->tx_buf_size > MWIFIEX_TX_DATA_BUF_SIZE_2K)
-				priv->aggr_prio_tbl[i].amsdu =
-							priv->tos_to_tid_inv[i];
-			else
-				priv->aggr_prio_tbl[i].amsdu =
-							BA_STREAM_NOT_ALLOWED;
-			priv->aggr_prio_tbl[i].ampdu_ap =
-							priv->tos_to_tid_inv[i];
-			priv->aggr_prio_tbl[i].ampdu_user =
-							priv->tos_to_tid_inv[i];
-		}
-
-		priv->aggr_prio_tbl[6].amsdu
-					= priv->aggr_prio_tbl[6].ampdu_ap
-					= priv->aggr_prio_tbl[6].ampdu_user
-					= BA_STREAM_NOT_ALLOWED;
-
-		priv->aggr_prio_tbl[7].amsdu = priv->aggr_prio_tbl[7].ampdu_ap
-					= priv->aggr_prio_tbl[7].ampdu_user
-					= BA_STREAM_NOT_ALLOWED;
-
-		mwifiex_set_ba_params(priv);
-		mwifiex_reset_11n_rx_seq_num(priv);
-
-		atomic_set(&priv->wmm.tx_pkts_queued, 0);
-		atomic_set(&priv->wmm.highest_queued_prio, HIGH_PRIO_TID);
-	}
-}
-
-int mwifiex_bypass_txlist_empty(struct mwifiex_adapter *adapter)
-{
-	struct mwifiex_private *priv;
-	int i;
-
-	for (i = 0; i < adapter->priv_num; i++) {
-		priv = adapter->priv[i];
-		if (!priv)
-			continue;
-		if (adapter->if_ops.is_port_ready &&
-		    !adapter->if_ops.is_port_ready(priv))
-			continue;
-		if (!skb_queue_empty(&priv->bypass_txq))
-			return false;
-	}
-
-	return true;
-}
-
-/*
- * This function checks if WMM Tx queue is empty.
- */
-int
-mwifiex_wmm_lists_empty(struct mwifiex_adapter *adapter)
-{
-	int i;
-	struct mwifiex_private *priv;
-
-	for (i = 0; i < adapter->priv_num; ++i) {
-		priv = adapter->priv[i];
-		if (!priv)
-			continue;
-		if (!priv->port_open)
-			continue;
-		if (adapter->if_ops.is_port_ready &&
-		    !adapter->if_ops.is_port_ready(priv))
-			continue;
-		if (atomic_read(&priv->wmm.tx_pkts_queued))
-			return false;
-	}
-
-	return true;
-}
-
-/*
- * This function deletes all packets in an RA list node.
- *
- * The packet sent completion callback handler are called with
- * status failure, after they are dequeued to ensure proper
- * cleanup. The RA list node itself is freed at the end.
- */
-static void
-mwifiex_wmm_del_pkts_in_ralist_node(struct mwifiex_private *priv,
-				    struct mwifiex_ra_list_tbl *ra_list)
-{
-	struct mwifiex_adapter *adapter = priv->adapter;
-	struct sk_buff *skb, *tmp;
-
-	skb_queue_walk_safe(&ra_list->skb_head, skb, tmp)
-		mwifiex_write_data_complete(adapter, skb, 0, -1);
-}
-
-/*
- * This function deletes all packets in an RA list.
- *
- * Each nodes in the RA list are freed individually first, and then
- * the RA list itself is freed.
- */
-static void
-mwifiex_wmm_del_pkts_in_ralist(struct mwifiex_private *priv,
-			       struct list_head *ra_list_head)
-{
-	struct mwifiex_ra_list_tbl *ra_list;
-
-	list_for_each_entry(ra_list, ra_list_head, list)
-		mwifiex_wmm_del_pkts_in_ralist_node(priv, ra_list);
-}
-
-/*
- * This function deletes all packets in all RA lists.
- */
-static void mwifiex_wmm_cleanup_queues(struct mwifiex_private *priv)
-{
-	int i;
-
-	for (i = 0; i < MAX_NUM_TID; i++)
-		mwifiex_wmm_del_pkts_in_ralist(priv, &priv->wmm.tid_tbl_ptr[i].
-								       ra_list);
-
-	atomic_set(&priv->wmm.tx_pkts_queued, 0);
-	atomic_set(&priv->wmm.highest_queued_prio, HIGH_PRIO_TID);
-}
-
-/*
- * This function deletes all route addresses from all RA lists.
- */
-static void mwifiex_wmm_delete_all_ralist(struct mwifiex_private *priv)
-{
-	struct mwifiex_ra_list_tbl *ra_list, *tmp_node;
-	int i;
-
-	for (i = 0; i < MAX_NUM_TID; ++i) {
-		mwifiex_dbg(priv->adapter, INFO,
-			    "info: ra_list: freeing buf for tid %d\n", i);
-		list_for_each_entry_safe(ra_list, tmp_node,
-					 &priv->wmm.tid_tbl_ptr[i].ra_list,
-					 list) {
-			list_del(&ra_list->list);
-			kfree(ra_list);
-		}
-
-		INIT_LIST_HEAD(&priv->wmm.tid_tbl_ptr[i].ra_list);
-	}
-}
-
-static int mwifiex_free_ack_frame(int id, void *p, void *data)
-{
-	pr_warn("Have pending ack frames!\n");
-	kfree_skb(p);
-	return 0;
-}
-
-/*
- * This function cleans up the Tx and Rx queues.
- *
- * Cleanup includes -
- *      - All packets in RA lists
- *      - All entries in Rx reorder table
- *      - All entries in Tx BA stream table
- *      - MPA buffer (if required)
- *      - All RA lists
- */
-void
-mwifiex_clean_txrx(struct mwifiex_private *priv)
-{
-	unsigned long flags;
-	struct sk_buff *skb, *tmp;
-
-	mwifiex_11n_cleanup_reorder_tbl(priv);
-	spin_lock_irqsave(&priv->wmm.ra_list_spinlock, flags);
-
-	mwifiex_wmm_cleanup_queues(priv);
-	mwifiex_11n_delete_all_tx_ba_stream_tbl(priv);
-
-	if (priv->adapter->if_ops.cleanup_mpa_buf)
-		priv->adapter->if_ops.cleanup_mpa_buf(priv->adapter);
-
-	mwifiex_wmm_delete_all_ralist(priv);
-	memcpy(tos_to_tid, ac_to_tid, sizeof(tos_to_tid));
-
-	if (priv->adapter->if_ops.clean_pcie_ring &&
-	    !priv->adapter->surprise_removed)
-		priv->adapter->if_ops.clean_pcie_ring(priv->adapter);
-	spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, flags);
-
-	skb_queue_walk_safe(&priv->tdls_txq, skb, tmp)
-		mwifiex_write_data_complete(priv->adapter, skb, 0, -1);
-
-	skb_queue_walk_safe(&priv->bypass_txq, skb, tmp)
-		mwifiex_write_data_complete(priv->adapter, skb, 0, -1);
-	atomic_set(&priv->adapter->bypass_tx_pending, 0);
-
-	idr_for_each(&priv->ack_status_frames, mwifiex_free_ack_frame, NULL);
-	idr_destroy(&priv->ack_status_frames);
-}
-
-/*
- * This function retrieves a particular RA list node, matching with the
- * given TID and RA address.
- */
-struct mwifiex_ra_list_tbl *
-mwifiex_wmm_get_ralist_node(struct mwifiex_private *priv, u8 tid,
-			    const u8 *ra_addr)
-{
-	struct mwifiex_ra_list_tbl *ra_list;
-
-	list_for_each_entry(ra_list, &priv->wmm.tid_tbl_ptr[tid].ra_list,
-			    list) {
-		if (!memcmp(ra_list->ra, ra_addr, ETH_ALEN))
-			return ra_list;
-	}
-
-	return NULL;
-}
-
-void mwifiex_update_ralist_tx_pause(struct mwifiex_private *priv, u8 *mac,
-				    u8 tx_pause)
-{
-	struct mwifiex_ra_list_tbl *ra_list;
-	u32 pkt_cnt = 0, tx_pkts_queued;
-	unsigned long flags;
-	int i;
-
-	spin_lock_irqsave(&priv->wmm.ra_list_spinlock, flags);
-
-	for (i = 0; i < MAX_NUM_TID; ++i) {
-		ra_list = mwifiex_wmm_get_ralist_node(priv, i, mac);
-		if (ra_list && ra_list->tx_paused != tx_pause) {
-			pkt_cnt += ra_list->total_pkt_count;
-			ra_list->tx_paused = tx_pause;
-			if (tx_pause)
-				priv->wmm.pkts_paused[i] +=
-					ra_list->total_pkt_count;
-			else
-				priv->wmm.pkts_paused[i] -=
-					ra_list->total_pkt_count;
-		}
-	}
-
-	if (pkt_cnt) {
-		tx_pkts_queued = atomic_read(&priv->wmm.tx_pkts_queued);
-		if (tx_pause)
-			tx_pkts_queued -= pkt_cnt;
-		else
-			tx_pkts_queued += pkt_cnt;
-
-		atomic_set(&priv->wmm.tx_pkts_queued, tx_pkts_queued);
-		atomic_set(&priv->wmm.highest_queued_prio, HIGH_PRIO_TID);
-	}
-	spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, flags);
-}
-
-/* This function update non-tdls peer ralist tx_pause while
- * tdls channel swithing
- */
-void mwifiex_update_ralist_tx_pause_in_tdls_cs(struct mwifiex_private *priv,
-					       u8 *mac, u8 tx_pause)
-{
-	struct mwifiex_ra_list_tbl *ra_list;
-	u32 pkt_cnt = 0, tx_pkts_queued;
-	unsigned long flags;
-	int i;
-
-	spin_lock_irqsave(&priv->wmm.ra_list_spinlock, flags);
-
-	for (i = 0; i < MAX_NUM_TID; ++i) {
-		list_for_each_entry(ra_list, &priv->wmm.tid_tbl_ptr[i].ra_list,
-				    list) {
-			if (!memcmp(ra_list->ra, mac, ETH_ALEN))
-				continue;
-
-			if (ra_list->tx_paused != tx_pause) {
-				pkt_cnt += ra_list->total_pkt_count;
-				ra_list->tx_paused = tx_pause;
-				if (tx_pause)
-					priv->wmm.pkts_paused[i] +=
-						ra_list->total_pkt_count;
-				else
-					priv->wmm.pkts_paused[i] -=
-						ra_list->total_pkt_count;
-			}
-		}
-	}
-
-	if (pkt_cnt) {
-		tx_pkts_queued = atomic_read(&priv->wmm.tx_pkts_queued);
-		if (tx_pause)
-			tx_pkts_queued -= pkt_cnt;
-		else
-			tx_pkts_queued += pkt_cnt;
-
-		atomic_set(&priv->wmm.tx_pkts_queued, tx_pkts_queued);
-		atomic_set(&priv->wmm.highest_queued_prio, HIGH_PRIO_TID);
-	}
-	spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, flags);
-}
-
-/*
- * This function retrieves an RA list node for a given TID and
- * RA address pair.
- *
- * If no such node is found, a new node is added first and then
- * retrieved.
- */
-struct mwifiex_ra_list_tbl *
-mwifiex_wmm_get_queue_raptr(struct mwifiex_private *priv, u8 tid,
-			    const u8 *ra_addr)
-{
-	struct mwifiex_ra_list_tbl *ra_list;
-
-	ra_list = mwifiex_wmm_get_ralist_node(priv, tid, ra_addr);
-	if (ra_list)
-		return ra_list;
-	mwifiex_ralist_add(priv, ra_addr);
-
-	return mwifiex_wmm_get_ralist_node(priv, tid, ra_addr);
-}
-
-/*
- * This function deletes RA list nodes for given mac for all TIDs.
- * Function also decrements TX pending count accordingly.
- */
-void
-mwifiex_wmm_del_peer_ra_list(struct mwifiex_private *priv, const u8 *ra_addr)
-{
-	struct mwifiex_ra_list_tbl *ra_list;
-	unsigned long flags;
-	int i;
-
-	spin_lock_irqsave(&priv->wmm.ra_list_spinlock, flags);
-
-	for (i = 0; i < MAX_NUM_TID; ++i) {
-		ra_list = mwifiex_wmm_get_ralist_node(priv, i, ra_addr);
-
-		if (!ra_list)
-			continue;
-		mwifiex_wmm_del_pkts_in_ralist_node(priv, ra_list);
-		if (ra_list->tx_paused)
-			priv->wmm.pkts_paused[i] -= ra_list->total_pkt_count;
-		else
-			atomic_sub(ra_list->total_pkt_count,
-				   &priv->wmm.tx_pkts_queued);
-		list_del(&ra_list->list);
-		kfree(ra_list);
-	}
-	spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, flags);
-}
-
-/*
- * This function checks if a particular RA list node exists in a given TID
- * table index.
- */
-int
-mwifiex_is_ralist_valid(struct mwifiex_private *priv,
-			struct mwifiex_ra_list_tbl *ra_list, int ptr_index)
-{
-	struct mwifiex_ra_list_tbl *rlist;
-
-	list_for_each_entry(rlist, &priv->wmm.tid_tbl_ptr[ptr_index].ra_list,
-			    list) {
-		if (rlist == ra_list)
-			return true;
-	}
-
-	return false;
-}
-
-/*
- * This function adds a packet to bypass TX queue.
- * This is special TX queue for packets which can be sent even when port_open
- * is false.
- */
-void
-mwifiex_wmm_add_buf_bypass_txqueue(struct mwifiex_private *priv,
-				   struct sk_buff *skb)
-{
-	skb_queue_tail(&priv->bypass_txq, skb);
-}
-
-/*
- * This function adds a packet to WMM queue.
- *
- * In disconnected state the packet is immediately dropped and the
- * packet send completion callback is called with status failure.
- *
- * Otherwise, the correct RA list node is located and the packet
- * is queued at the list tail.
- */
-void
-mwifiex_wmm_add_buf_txqueue(struct mwifiex_private *priv,
-			    struct sk_buff *skb)
-{
-	struct mwifiex_adapter *adapter = priv->adapter;
-	u32 tid;
-	struct mwifiex_ra_list_tbl *ra_list;
-	u8 ra[ETH_ALEN], tid_down;
-	unsigned long flags;
-	struct list_head list_head;
-	int tdls_status = TDLS_NOT_SETUP;
-	struct ethhdr *eth_hdr = (struct ethhdr *)skb->data;
-	struct mwifiex_txinfo *tx_info = MWIFIEX_SKB_TXCB(skb);
-
-	memcpy(ra, eth_hdr->h_dest, ETH_ALEN);
-
-	if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA &&
-	    ISSUPP_TDLS_ENABLED(adapter->fw_cap_info)) {
-		if (ntohs(eth_hdr->h_proto) == ETH_P_TDLS)
-			mwifiex_dbg(adapter, DATA,
-				    "TDLS setup packet for %pM.\t"
-				    "Don't block\n", ra);
-		else if (memcmp(priv->cfg_bssid, ra, ETH_ALEN))
-			tdls_status = mwifiex_get_tdls_link_status(priv, ra);
-	}
-
-	if (!priv->media_connected && !mwifiex_is_skb_mgmt_frame(skb)) {
-		mwifiex_dbg(adapter, DATA, "data: drop packet in disconnect\n");
-		mwifiex_write_data_complete(adapter, skb, 0, -1);
-		return;
-	}
-
-	tid = skb->priority;
-
-	spin_lock_irqsave(&priv->wmm.ra_list_spinlock, flags);
-
-	tid_down = mwifiex_wmm_downgrade_tid(priv, tid);
-
-	/* In case of infra as we have already created the list during
-	   association we just don't have to call get_queue_raptr, we will
-	   have only 1 raptr for a tid in case of infra */
-	if (!mwifiex_queuing_ra_based(priv) &&
-	    !mwifiex_is_skb_mgmt_frame(skb)) {
-		switch (tdls_status) {
-		case TDLS_SETUP_COMPLETE:
-		case TDLS_CHAN_SWITCHING:
-		case TDLS_IN_BASE_CHAN:
-		case TDLS_IN_OFF_CHAN:
-			ra_list = mwifiex_wmm_get_queue_raptr(priv, tid_down,
-							      ra);
-			tx_info->flags |= MWIFIEX_BUF_FLAG_TDLS_PKT;
-			break;
-		case TDLS_SETUP_INPROGRESS:
-			skb_queue_tail(&priv->tdls_txq, skb);
-			spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock,
-					       flags);
-			return;
-		default:
-			list_head = priv->wmm.tid_tbl_ptr[tid_down].ra_list;
-			if (!list_empty(&list_head))
-				ra_list = list_first_entry(
-					&list_head, struct mwifiex_ra_list_tbl,
-					list);
-			else
-				ra_list = NULL;
-			break;
-		}
-	} else {
-		memcpy(ra, skb->data, ETH_ALEN);
-		if (ra[0] & 0x01 || mwifiex_is_skb_mgmt_frame(skb))
-			eth_broadcast_addr(ra);
-		ra_list = mwifiex_wmm_get_queue_raptr(priv, tid_down, ra);
-	}
-
-	if (!ra_list) {
-		spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, flags);
-		mwifiex_write_data_complete(adapter, skb, 0, -1);
-		return;
-	}
-
-	skb_queue_tail(&ra_list->skb_head, skb);
-
-	ra_list->ba_pkt_count++;
-	ra_list->total_pkt_count++;
-
-	if (atomic_read(&priv->wmm.highest_queued_prio) <
-						priv->tos_to_tid_inv[tid_down])
-		atomic_set(&priv->wmm.highest_queued_prio,
-			   priv->tos_to_tid_inv[tid_down]);
-
-	if (ra_list->tx_paused)
-		priv->wmm.pkts_paused[tid_down]++;
-	else
-		atomic_inc(&priv->wmm.tx_pkts_queued);
-
-	spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, flags);
-}
-
-/*
- * This function processes the get WMM status command response from firmware.
- *
- * The response may contain multiple TLVs -
- *      - AC Queue status TLVs
- *      - Current WMM Parameter IE TLV
- *      - Admission Control action frame TLVs
- *
- * This function parses the TLVs and then calls further specific functions
- * to process any changes in the queue prioritize or state.
- */
-int mwifiex_ret_wmm_get_status(struct mwifiex_private *priv,
-			       const struct host_cmd_ds_command *resp)
-{
-	u8 *curr = (u8 *) &resp->params.get_wmm_status;
-	uint16_t resp_len = le16_to_cpu(resp->size), tlv_len;
-	int mask = IEEE80211_WMM_IE_AP_QOSINFO_PARAM_SET_CNT_MASK;
-	bool valid = true;
-
-	struct mwifiex_ie_types_data *tlv_hdr;
-	struct mwifiex_ie_types_wmm_queue_status *tlv_wmm_qstatus;
-	struct ieee_types_wmm_parameter *wmm_param_ie = NULL;
-	struct mwifiex_wmm_ac_status *ac_status;
-
-	mwifiex_dbg(priv->adapter, INFO,
-		    "info: WMM: WMM_GET_STATUS cmdresp received: %d\n",
-		    resp_len);
-
-	while ((resp_len >= sizeof(tlv_hdr->header)) && valid) {
-		tlv_hdr = (struct mwifiex_ie_types_data *) curr;
-		tlv_len = le16_to_cpu(tlv_hdr->header.len);
-
-		if (resp_len < tlv_len + sizeof(tlv_hdr->header))
-			break;
-
-		switch (le16_to_cpu(tlv_hdr->header.type)) {
-		case TLV_TYPE_WMMQSTATUS:
-			tlv_wmm_qstatus =
-				(struct mwifiex_ie_types_wmm_queue_status *)
-				tlv_hdr;
-			mwifiex_dbg(priv->adapter, CMD,
-				    "info: CMD_RESP: WMM_GET_STATUS:\t"
-				    "QSTATUS TLV: %d, %d, %d\n",
-				    tlv_wmm_qstatus->queue_index,
-				    tlv_wmm_qstatus->flow_required,
-				    tlv_wmm_qstatus->disabled);
-
-			ac_status = &priv->wmm.ac_status[tlv_wmm_qstatus->
-							 queue_index];
-			ac_status->disabled = tlv_wmm_qstatus->disabled;
-			ac_status->flow_required =
-						tlv_wmm_qstatus->flow_required;
-			ac_status->flow_created = tlv_wmm_qstatus->flow_created;
-			break;
-
-		case WLAN_EID_VENDOR_SPECIFIC:
-			/*
-			 * Point the regular IEEE IE 2 bytes into the Marvell IE
-			 *   and setup the IEEE IE type and length byte fields
-			 */
-
-			wmm_param_ie =
-				(struct ieee_types_wmm_parameter *) (curr +
-								    2);
-			wmm_param_ie->vend_hdr.len = (u8) tlv_len;
-			wmm_param_ie->vend_hdr.element_id =
-						WLAN_EID_VENDOR_SPECIFIC;
-
-			mwifiex_dbg(priv->adapter, CMD,
-				    "info: CMD_RESP: WMM_GET_STATUS:\t"
-				    "WMM Parameter Set Count: %d\n",
-				    wmm_param_ie->qos_info_bitmap & mask);
-
-			memcpy((u8 *) &priv->curr_bss_params.bss_descriptor.
-			       wmm_ie, wmm_param_ie,
-			       wmm_param_ie->vend_hdr.len + 2);
-
-			break;
-
-		default:
-			valid = false;
-			break;
-		}
-
-		curr += (tlv_len + sizeof(tlv_hdr->header));
-		resp_len -= (tlv_len + sizeof(tlv_hdr->header));
-	}
-
-	mwifiex_wmm_setup_queue_priorities(priv, wmm_param_ie);
-	mwifiex_wmm_setup_ac_downgrade(priv);
-
-	return 0;
-}
-
-/*
- * Callback handler from the command module to allow insertion of a WMM TLV.
- *
- * If the BSS we are associating to supports WMM, this function adds the
- * required WMM Information IE to the association request command buffer in
- * the form of a Marvell extended IEEE IE.
- */
-u32
-mwifiex_wmm_process_association_req(struct mwifiex_private *priv,
-				    u8 **assoc_buf,
-				    struct ieee_types_wmm_parameter *wmm_ie,
-				    struct ieee80211_ht_cap *ht_cap)
-{
-	struct mwifiex_ie_types_wmm_param_set *wmm_tlv;
-	u32 ret_len = 0;
-
-	/* Null checks */
-	if (!assoc_buf)
-		return 0;
-	if (!(*assoc_buf))
-		return 0;
-
-	if (!wmm_ie)
-		return 0;
-
-	mwifiex_dbg(priv->adapter, INFO,
-		    "info: WMM: process assoc req: bss->wmm_ie=%#x\n",
-		    wmm_ie->vend_hdr.element_id);
-
-	if ((priv->wmm_required ||
-	     (ht_cap && (priv->adapter->config_bands & BAND_GN ||
-	     priv->adapter->config_bands & BAND_AN))) &&
-	    wmm_ie->vend_hdr.element_id == WLAN_EID_VENDOR_SPECIFIC) {
-		wmm_tlv = (struct mwifiex_ie_types_wmm_param_set *) *assoc_buf;
-		wmm_tlv->header.type = cpu_to_le16((u16) wmm_info_ie[0]);
-		wmm_tlv->header.len = cpu_to_le16((u16) wmm_info_ie[1]);
-		memcpy(wmm_tlv->wmm_ie, &wmm_info_ie[2],
-		       le16_to_cpu(wmm_tlv->header.len));
-		if (wmm_ie->qos_info_bitmap & IEEE80211_WMM_IE_AP_QOSINFO_UAPSD)
-			memcpy((u8 *) (wmm_tlv->wmm_ie
-				       + le16_to_cpu(wmm_tlv->header.len)
-				       - sizeof(priv->wmm_qosinfo)),
-			       &priv->wmm_qosinfo, sizeof(priv->wmm_qosinfo));
-
-		ret_len = sizeof(wmm_tlv->header)
-			  + le16_to_cpu(wmm_tlv->header.len);
-
-		*assoc_buf += ret_len;
-	}
-
-	return ret_len;
-}
-
-/*
- * This function computes the time delay in the driver queues for a
- * given packet.
- *
- * When the packet is received at the OS/Driver interface, the current
- * time is set in the packet structure. The difference between the present
- * time and that received time is computed in this function and limited
- * based on pre-compiled limits in the driver.
- */
-u8
-mwifiex_wmm_compute_drv_pkt_delay(struct mwifiex_private *priv,
-				  const struct sk_buff *skb)
-{
-	u32 queue_delay = ktime_to_ms(net_timedelta(skb->tstamp));
-	u8 ret_val;
-
-	/*
-	 * Queue delay is passed as a uint8 in units of 2ms (ms shifted
-	 *  by 1). Min value (other than 0) is therefore 2ms, max is 510ms.
-	 *
-	 * Pass max value if queue_delay is beyond the uint8 range
-	 */
-	ret_val = (u8) (min(queue_delay, priv->wmm.drv_pkt_delay_max) >> 1);
-
-	mwifiex_dbg(priv->adapter, DATA, "data: WMM: Pkt Delay: %d ms,\t"
-		    "%d ms sent to FW\n", queue_delay, ret_val);
-
-	return ret_val;
-}
-
-/*
- * This function retrieves the highest priority RA list table pointer.
- */
-static struct mwifiex_ra_list_tbl *
-mwifiex_wmm_get_highest_priolist_ptr(struct mwifiex_adapter *adapter,
-				     struct mwifiex_private **priv, int *tid)
-{
-	struct mwifiex_private *priv_tmp;
-	struct mwifiex_ra_list_tbl *ptr;
-	struct mwifiex_tid_tbl *tid_ptr;
-	atomic_t *hqp;
-	unsigned long flags_ra;
-	int i, j;
-
-	/* check the BSS with highest priority first */
-	for (j = adapter->priv_num - 1; j >= 0; --j) {
-		/* iterate over BSS with the equal priority */
-		list_for_each_entry(adapter->bss_prio_tbl[j].bss_prio_cur,
-				    &adapter->bss_prio_tbl[j].bss_prio_head,
-				    list) {
-
-			priv_tmp = adapter->bss_prio_tbl[j].bss_prio_cur->priv;
-
-			if (!priv_tmp->port_open ||
-			    (atomic_read(&priv_tmp->wmm.tx_pkts_queued) == 0))
-				continue;
-
-			if (adapter->if_ops.is_port_ready &&
-			    !adapter->if_ops.is_port_ready(priv_tmp))
-				continue;
-
-			/* iterate over the WMM queues of the BSS */
-			hqp = &priv_tmp->wmm.highest_queued_prio;
-			for (i = atomic_read(hqp); i >= LOW_PRIO_TID; --i) {
-
-				spin_lock_irqsave(&priv_tmp->wmm.
-						  ra_list_spinlock, flags_ra);
-
-				tid_ptr = &(priv_tmp)->wmm.
-					tid_tbl_ptr[tos_to_tid[i]];
-
-				/* iterate over receiver addresses */
-				list_for_each_entry(ptr, &tid_ptr->ra_list,
-						    list) {
-
-					if (!ptr->tx_paused &&
-					    !skb_queue_empty(&ptr->skb_head))
-						/* holds both locks */
-						goto found;
-				}
-
-				spin_unlock_irqrestore(&priv_tmp->wmm.
-						       ra_list_spinlock,
-						       flags_ra);
-			}
-		}
-
-	}
-
-	return NULL;
-
-found:
-	/* holds ra_list_spinlock */
-	if (atomic_read(hqp) > i)
-		atomic_set(hqp, i);
-	spin_unlock_irqrestore(&priv_tmp->wmm.ra_list_spinlock, flags_ra);
-
-	*priv = priv_tmp;
-	*tid = tos_to_tid[i];
-
-	return ptr;
-}
-
-/* This functions rotates ra and bss lists so packets are picked round robin.
- *
- * After a packet is successfully transmitted, rotate the ra list, so the ra
- * next to the one transmitted, will come first in the list. This way we pick
- * the ra' in a round robin fashion. Same applies to bss nodes of equal
- * priority.
- *
- * Function also increments wmm.packets_out counter.
- */
-void mwifiex_rotate_priolists(struct mwifiex_private *priv,
-				 struct mwifiex_ra_list_tbl *ra,
-				 int tid)
-{
-	struct mwifiex_adapter *adapter = priv->adapter;
-	struct mwifiex_bss_prio_tbl *tbl = adapter->bss_prio_tbl;
-	struct mwifiex_tid_tbl *tid_ptr = &priv->wmm.tid_tbl_ptr[tid];
-	unsigned long flags;
-
-	spin_lock_irqsave(&tbl[priv->bss_priority].bss_prio_lock, flags);
-	/*
-	 * dirty trick: we remove 'head' temporarily and reinsert it after
-	 * curr bss node. imagine list to stay fixed while head is moved
-	 */
-	list_move(&tbl[priv->bss_priority].bss_prio_head,
-		  &tbl[priv->bss_priority].bss_prio_cur->list);
-	spin_unlock_irqrestore(&tbl[priv->bss_priority].bss_prio_lock, flags);
-
-	spin_lock_irqsave(&priv->wmm.ra_list_spinlock, flags);
-	if (mwifiex_is_ralist_valid(priv, ra, tid)) {
-		priv->wmm.packets_out[tid]++;
-		/* same as above */
-		list_move(&tid_ptr->ra_list, &ra->list);
-	}
-	spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, flags);
-}
-
-/*
- * This function checks if 11n aggregation is possible.
- */
-static int
-mwifiex_is_11n_aggragation_possible(struct mwifiex_private *priv,
-				    struct mwifiex_ra_list_tbl *ptr,
-				    int max_buf_size)
-{
-	int count = 0, total_size = 0;
-	struct sk_buff *skb, *tmp;
-	int max_amsdu_size;
-
-	if (priv->bss_role == MWIFIEX_BSS_ROLE_UAP && priv->ap_11n_enabled &&
-	    ptr->is_11n_enabled)
-		max_amsdu_size = min_t(int, ptr->max_amsdu, max_buf_size);
-	else
-		max_amsdu_size = max_buf_size;
-
-	skb_queue_walk_safe(&ptr->skb_head, skb, tmp) {
-		total_size += skb->len;
-		if (total_size >= max_amsdu_size)
-			break;
-		if (++count >= MIN_NUM_AMSDU)
-			return true;
-	}
-
-	return false;
-}
-
-/*
- * This function sends a single packet to firmware for transmission.
- */
-static void
-mwifiex_send_single_packet(struct mwifiex_private *priv,
-			   struct mwifiex_ra_list_tbl *ptr, int ptr_index,
-			   unsigned long ra_list_flags)
-			   __releases(&priv->wmm.ra_list_spinlock)
-{
-	struct sk_buff *skb, *skb_next;
-	struct mwifiex_tx_param tx_param;
-	struct mwifiex_adapter *adapter = priv->adapter;
-	struct mwifiex_txinfo *tx_info;
-
-	if (skb_queue_empty(&ptr->skb_head)) {
-		spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock,
-				       ra_list_flags);
-		mwifiex_dbg(adapter, DATA, "data: nothing to send\n");
-		return;
-	}
-
-	skb = skb_dequeue(&ptr->skb_head);
-
-	tx_info = MWIFIEX_SKB_TXCB(skb);
-	mwifiex_dbg(adapter, DATA,
-		    "data: dequeuing the packet %p %p\n", ptr, skb);
-
-	ptr->total_pkt_count--;
-
-	if (!skb_queue_empty(&ptr->skb_head))
-		skb_next = skb_peek(&ptr->skb_head);
-	else
-		skb_next = NULL;
-
-	spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, ra_list_flags);
-
-	tx_param.next_pkt_len = ((skb_next) ? skb_next->len +
-				sizeof(struct txpd) : 0);
-
-	if (mwifiex_process_tx(priv, skb, &tx_param) == -EBUSY) {
-		/* Queue the packet back at the head */
-		spin_lock_irqsave(&priv->wmm.ra_list_spinlock, ra_list_flags);
-
-		if (!mwifiex_is_ralist_valid(priv, ptr, ptr_index)) {
-			spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock,
-					       ra_list_flags);
-			mwifiex_write_data_complete(adapter, skb, 0, -1);
-			return;
-		}
-
-		skb_queue_tail(&ptr->skb_head, skb);
-
-		ptr->total_pkt_count++;
-		ptr->ba_pkt_count++;
-		tx_info->flags |= MWIFIEX_BUF_FLAG_REQUEUED_PKT;
-		spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock,
-				       ra_list_flags);
-	} else {
-		mwifiex_rotate_priolists(priv, ptr, ptr_index);
-		atomic_dec(&priv->wmm.tx_pkts_queued);
-	}
-}
-
-/*
- * This function checks if the first packet in the given RA list
- * is already processed or not.
- */
-static int
-mwifiex_is_ptr_processed(struct mwifiex_private *priv,
-			 struct mwifiex_ra_list_tbl *ptr)
-{
-	struct sk_buff *skb;
-	struct mwifiex_txinfo *tx_info;
-
-	if (skb_queue_empty(&ptr->skb_head))
-		return false;
-
-	skb = skb_peek(&ptr->skb_head);
-
-	tx_info = MWIFIEX_SKB_TXCB(skb);
-	if (tx_info->flags & MWIFIEX_BUF_FLAG_REQUEUED_PKT)
-		return true;
-
-	return false;
-}
-
-/*
- * This function sends a single processed packet to firmware for
- * transmission.
- */
-static void
-mwifiex_send_processed_packet(struct mwifiex_private *priv,
-			      struct mwifiex_ra_list_tbl *ptr, int ptr_index,
-			      unsigned long ra_list_flags)
-				__releases(&priv->wmm.ra_list_spinlock)
-{
-	struct mwifiex_tx_param tx_param;
-	struct mwifiex_adapter *adapter = priv->adapter;
-	int ret = -1;
-	struct sk_buff *skb, *skb_next;
-	struct mwifiex_txinfo *tx_info;
-
-	if (skb_queue_empty(&ptr->skb_head)) {
-		spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock,
-				       ra_list_flags);
-		return;
-	}
-
-	skb = skb_dequeue(&ptr->skb_head);
-
-	if (adapter->data_sent || adapter->tx_lock_flag) {
-		spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock,
-				       ra_list_flags);
-		skb_queue_tail(&adapter->tx_data_q, skb);
-		atomic_inc(&adapter->tx_queued);
-		return;
-	}
-
-	if (!skb_queue_empty(&ptr->skb_head))
-		skb_next = skb_peek(&ptr->skb_head);
-	else
-		skb_next = NULL;
-
-	tx_info = MWIFIEX_SKB_TXCB(skb);
-
-	spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, ra_list_flags);
-
-	if (adapter->iface_type == MWIFIEX_USB) {
-		ret = adapter->if_ops.host_to_card(adapter, priv->usb_port,
-						   skb, NULL);
-	} else {
-		tx_param.next_pkt_len =
-			((skb_next) ? skb_next->len +
-			 sizeof(struct txpd) : 0);
-		ret = adapter->if_ops.host_to_card(adapter, MWIFIEX_TYPE_DATA,
-						   skb, &tx_param);
-	}
-
-	switch (ret) {
-	case -EBUSY:
-		mwifiex_dbg(adapter, ERROR, "data: -EBUSY is returned\n");
-		spin_lock_irqsave(&priv->wmm.ra_list_spinlock, ra_list_flags);
-
-		if (!mwifiex_is_ralist_valid(priv, ptr, ptr_index)) {
-			spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock,
-					       ra_list_flags);
-			mwifiex_write_data_complete(adapter, skb, 0, -1);
-			return;
-		}
-
-		skb_queue_tail(&ptr->skb_head, skb);
-
-		tx_info->flags |= MWIFIEX_BUF_FLAG_REQUEUED_PKT;
-		spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock,
-				       ra_list_flags);
-		break;
-	case -1:
-		mwifiex_dbg(adapter, ERROR, "host_to_card failed: %#x\n", ret);
-		adapter->dbg.num_tx_host_to_card_failure++;
-		mwifiex_write_data_complete(adapter, skb, 0, ret);
-		break;
-	case -EINPROGRESS:
-		break;
-	case 0:
-		mwifiex_write_data_complete(adapter, skb, 0, ret);
-	default:
-		break;
-	}
-	if (ret != -EBUSY) {
-		mwifiex_rotate_priolists(priv, ptr, ptr_index);
-		atomic_dec(&priv->wmm.tx_pkts_queued);
-	}
-}
-
-/*
- * This function dequeues a packet from the highest priority list
- * and transmits it.
- */
-static int
-mwifiex_dequeue_tx_packet(struct mwifiex_adapter *adapter)
-{
-	struct mwifiex_ra_list_tbl *ptr;
-	struct mwifiex_private *priv = NULL;
-	int ptr_index = 0;
-	u8 ra[ETH_ALEN];
-	int tid_del = 0, tid = 0;
-	unsigned long flags;
-
-	ptr = mwifiex_wmm_get_highest_priolist_ptr(adapter, &priv, &ptr_index);
-	if (!ptr)
-		return -1;
-
-	tid = mwifiex_get_tid(ptr);
-
-	mwifiex_dbg(adapter, DATA, "data: tid=%d\n", tid);
-
-	spin_lock_irqsave(&priv->wmm.ra_list_spinlock, flags);
-	if (!mwifiex_is_ralist_valid(priv, ptr, ptr_index)) {
-		spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, flags);
-		return -1;
-	}
-
-	if (mwifiex_is_ptr_processed(priv, ptr)) {
-		mwifiex_send_processed_packet(priv, ptr, ptr_index, flags);
-		/* ra_list_spinlock has been freed in
-		   mwifiex_send_processed_packet() */
-		return 0;
-	}
-
-	if (!ptr->is_11n_enabled ||
-		ptr->ba_status ||
-		priv->wps.session_enable) {
-		if (ptr->is_11n_enabled &&
-			ptr->ba_status &&
-			ptr->amsdu_in_ampdu &&
-			mwifiex_is_amsdu_allowed(priv, tid) &&
-			mwifiex_is_11n_aggragation_possible(priv, ptr,
-							adapter->tx_buf_size))
-			mwifiex_11n_aggregate_pkt(priv, ptr, ptr_index, flags);
-			/* ra_list_spinlock has been freed in
-			 * mwifiex_11n_aggregate_pkt()
-			 */
-		else
-			mwifiex_send_single_packet(priv, ptr, ptr_index, flags);
-			/* ra_list_spinlock has been freed in
-			 * mwifiex_send_single_packet()
-			 */
-	} else {
-		if (mwifiex_is_ampdu_allowed(priv, ptr, tid) &&
-		    ptr->ba_pkt_count > ptr->ba_packet_thr) {
-			if (mwifiex_space_avail_for_new_ba_stream(adapter)) {
-				mwifiex_create_ba_tbl(priv, ptr->ra, tid,
-						      BA_SETUP_INPROGRESS);
-				mwifiex_send_addba(priv, tid, ptr->ra);
-			} else if (mwifiex_find_stream_to_delete
-				   (priv, tid, &tid_del, ra)) {
-				mwifiex_create_ba_tbl(priv, ptr->ra, tid,
-						      BA_SETUP_INPROGRESS);
-				mwifiex_send_delba(priv, tid_del, ra, 1);
-			}
-		}
-		if (mwifiex_is_amsdu_allowed(priv, tid) &&
-		    mwifiex_is_11n_aggragation_possible(priv, ptr,
-							adapter->tx_buf_size))
-			mwifiex_11n_aggregate_pkt(priv, ptr, ptr_index, flags);
-			/* ra_list_spinlock has been freed in
-			   mwifiex_11n_aggregate_pkt() */
-		else
-			mwifiex_send_single_packet(priv, ptr, ptr_index, flags);
-			/* ra_list_spinlock has been freed in
-			   mwifiex_send_single_packet() */
-	}
-	return 0;
-}
-
-void mwifiex_process_bypass_tx(struct mwifiex_adapter *adapter)
-{
-	struct mwifiex_tx_param tx_param;
-	struct sk_buff *skb;
-	struct mwifiex_txinfo *tx_info;
-	struct mwifiex_private *priv;
-	int i;
-
-	if (adapter->data_sent || adapter->tx_lock_flag)
-		return;
-
-	for (i = 0; i < adapter->priv_num; ++i) {
-		priv = adapter->priv[i];
-
-		if (!priv)
-			continue;
-
-		if (adapter->if_ops.is_port_ready &&
-		    !adapter->if_ops.is_port_ready(priv))
-			continue;
-
-		if (skb_queue_empty(&priv->bypass_txq))
-			continue;
-
-		skb = skb_dequeue(&priv->bypass_txq);
-		tx_info = MWIFIEX_SKB_TXCB(skb);
-
-		/* no aggregation for bypass packets */
-		tx_param.next_pkt_len = 0;
-
-		if (mwifiex_process_tx(priv, skb, &tx_param) == -EBUSY) {
-			skb_queue_head(&priv->bypass_txq, skb);
-			tx_info->flags |= MWIFIEX_BUF_FLAG_REQUEUED_PKT;
-		} else {
-			atomic_dec(&adapter->bypass_tx_pending);
-		}
-	}
-}
-
-/*
- * This function transmits the highest priority packet awaiting in the
- * WMM Queues.
- */
-void
-mwifiex_wmm_process_tx(struct mwifiex_adapter *adapter)
-{
-	do {
-		if (mwifiex_dequeue_tx_packet(adapter))
-			break;
-		if (adapter->iface_type != MWIFIEX_SDIO) {
-			if (adapter->data_sent ||
-			    adapter->tx_lock_flag)
-				break;
-		} else {
-			if (atomic_read(&adapter->tx_queued) >=
-			    MWIFIEX_MAX_PKTS_TXQ)
-				break;
-		}
-	} while (!mwifiex_wmm_lists_empty(adapter));
-}