wireless: mwifiex: initial commit for Marvell mwifiex driver (5e6e3a92) · Commits · e / devices / android_kernel_sony_msm8998

drivers/net/wireless/Kconfig

+1 −0

Original line number	Diff line number	Diff line
		@@ -284,5 +284,6 @@ source "drivers/net/wireless/rtlwifi/Kconfig"
		source "drivers/net/wireless/wl1251/Kconfig"
		source "drivers/net/wireless/wl12xx/Kconfig"
		source "drivers/net/wireless/zd1211rw/Kconfig"
		source "drivers/net/wireless/mwifiex/Kconfig"

		endif # WLAN

drivers/net/wireless/Makefile

+2 −0

Original line number	Diff line number	Diff line
		@@ -56,3 +56,5 @@ obj-$(CONFIG_WL12XX) += wl12xx/
		obj-$(CONFIG_WL12XX_PLATFORM_DATA) += wl12xx/

		obj-$(CONFIG_IWM) += iwmc3200wifi/

		obj-$(CONFIG_MWIFIEX) += mwifiex/

drivers/net/wireless/mwifiex/11n.c

0 → 100644

+922 −0

File added.

Preview size limit exceeded, changes collapsed.

drivers/net/wireless/mwifiex/11n.h

0 → 100644

+178 −0

Original line number	Diff line number	Diff line
		/*
		* Marvell Wireless LAN device driver: 802.11n
		*
		* 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.
		*/

		#ifndef _MWIFIEX_11N_H_
		#define _MWIFIEX_11N_H_

		#include "11n_aggr.h"
		#include "11n_rxreorder.h"
		#include "wmm.h"

		void mwifiex_show_dot_11n_dev_cap(struct mwifiex_adapter *adapter, u32 cap);
		void mwifiex_show_dev_mcs_support(struct mwifiex_adapter *adapter, u8 support);
		int mwifiex_ret_11n_delba(struct mwifiex_private *priv,
		struct host_cmd_ds_command *resp);
		int mwifiex_ret_11n_addba_req(struct mwifiex_private *priv,
		struct host_cmd_ds_command *resp);
		int mwifiex_ret_11n_cfg(struct mwifiex_private *priv,
		struct host_cmd_ds_command *resp,
		void *data_buf);
		int mwifiex_cmd_11n_cfg(struct mwifiex_private *priv,
		struct host_cmd_ds_command *cmd,
		u16 cmd_action, void *data_buf);

		int mwifiex_cmd_11n_cfg(struct mwifiex_private *priv,
		struct host_cmd_ds_command *cmd,
		u16 cmd_action, void *data_buf);

		int mwifiex_cmd_append_11n_tlv(struct mwifiex_private *priv,
		struct mwifiex_bssdescriptor *bss_desc,
		u8 **buffer);
		void mwifiex_cfg_tx_buf(struct mwifiex_private *priv,
		struct mwifiex_bssdescriptor *bss_desc);
		void mwifiex_fill_cap_info(struct mwifiex_private *,
		struct mwifiex_ie_types_htcap *);
		int mwifiex_set_get_11n_htcap_cfg(struct mwifiex_private *priv,
		u16 action, int *htcap_cfg);
		void mwifiex_11n_delete_tx_ba_stream_tbl_entry(struct mwifiex_private *priv,
		struct mwifiex_tx_ba_stream_tbl
		*tx_tbl);
		void mwifiex_11n_delete_all_tx_ba_stream_tbl(struct mwifiex_private *priv);
		struct mwifiex_tx_ba_stream_tbl *mwifiex_11n_get_tx_ba_stream_tbl(struct
		mwifiex_private
		*priv, int tid,
		u8 *ra);
		void mwifiex_11n_create_tx_ba_stream_tbl(struct mwifiex_private priv, u8 ra,
		int tid,
		enum mwifiex_ba_status ba_status);
		int mwifiex_send_addba(struct mwifiex_private priv, int tid, u8 peer_mac);
		int mwifiex_send_delba(struct mwifiex_private priv, int tid, u8 peer_mac,
		int initiator);
		void mwifiex_11n_delete_ba_stream(struct mwifiex_private priv, u8 del_ba);
		int mwifiex_get_rx_reorder_tbl(struct mwifiex_private *priv,
		struct mwifiex_ds_rx_reorder_tbl *buf);
		int mwifiex_get_tx_ba_stream_tbl(struct mwifiex_private *priv,
		struct mwifiex_ds_tx_ba_stream_tbl *buf);
		int mwifiex_ret_amsdu_aggr_ctrl(struct mwifiex_private *priv,
		struct host_cmd_ds_command
		*resp,
		void *data_buf);
		int mwifiex_cmd_recfg_tx_buf(struct mwifiex_private *priv,
		struct host_cmd_ds_command *cmd,
		int cmd_action, void *data_buf);
		int mwifiex_cmd_amsdu_aggr_ctrl(struct mwifiex_private *priv,
		struct host_cmd_ds_command *cmd,
		int cmd_action,
		void *data_buf);

		/*
		* This function checks whether AMPDU is allowed or not for a particular TID.
		*/
		static inline u8
		mwifiex_is_ampdu_allowed(struct mwifiex_private *priv,
		struct mwifiex_ra_list_tbl *ptr, int tid)
		{
		return ((priv->aggr_prio_tbl[tid].ampdu_ap != BA_STREAM_NOT_ALLOWED)
		? true : false);
		}

		/*
		* This function checks whether AMSDU is allowed or not for a particular TID.
		*/
		static inline u8
		mwifiex_is_amsdu_allowed(struct mwifiex_private *priv,
		struct mwifiex_ra_list_tbl *ptr, int tid)
		{
		return (((priv->aggr_prio_tbl[tid].amsdu != BA_STREAM_NOT_ALLOWED)
		&& ((priv->is_data_rate_auto)
		\|\| !((priv->bitmap_rates[2]) & 0x03)))
		? true : false);
		}

		/*
		* This function checks whether a BA stream is available or not.
		*/
		static inline u8
		mwifiex_is_ba_stream_avail(struct mwifiex_private *priv)
		{
		struct mwifiex_private *pmpriv = NULL;
		u8 i = 0;
		u32 ba_stream_num = 0;

		for (i = 0; i < priv->adapter->priv_num; i++) {
		pmpriv = priv->adapter->priv[i];
		if (pmpriv)
		ba_stream_num +=
		mwifiex_wmm_list_len(priv->adapter,
		(struct list_head
		*) &pmpriv->
		tx_ba_stream_tbl_ptr);
		}

		return ((ba_stream_num <
		MWIFIEX_MAX_TX_BASTREAM_SUPPORTED) ? true : false);
		}

		/*
		* This function finds the correct Tx BA stream to delete.
		*
		* Upon successfully locating, both the TID and the RA are returned.
		*/
		static inline u8
		mwifiex_find_stream_to_delete(struct mwifiex_private *priv,
		struct mwifiex_ra_list_tbl *ptr, int ptr_tid,
		int ptid, u8 ra)
		{
		int tid;
		u8 ret = false;
		struct mwifiex_tx_ba_stream_tbl *tx_tbl;
		unsigned long flags;

		tid = priv->aggr_prio_tbl[ptr_tid].ampdu_user;

		spin_lock_irqsave(&priv->tx_ba_stream_tbl_lock, flags);
		list_for_each_entry(tx_tbl, &priv->tx_ba_stream_tbl_ptr, list) {
		if (tid > priv->aggr_prio_tbl[tx_tbl->tid].ampdu_user) {
		tid = priv->aggr_prio_tbl[tx_tbl->tid].ampdu_user;
		*ptid = tx_tbl->tid;
		memcpy(ra, tx_tbl->ra, ETH_ALEN);
		ret = true;
		}
		}
		spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock, flags);

		return ret;
		}

		/*
		* This function checks whether BA stream is set up or not.
		*/
		static inline int
		mwifiex_is_ba_stream_setup(struct mwifiex_private *priv,
		struct mwifiex_ra_list_tbl *ptr, int tid)
		{
		struct mwifiex_tx_ba_stream_tbl *tx_tbl;

		tx_tbl = mwifiex_11n_get_tx_ba_stream_tbl(priv, tid, ptr->ra);
		if (tx_tbl && IS_BASTREAM_SETUP(tx_tbl))
		return true;

		return false;
		}
		#endif /* !_MWIFIEX_11N_H_ */

drivers/net/wireless/mwifiex/11n_aggr.c

0 → 100644

+423 −0

Original line number	Diff line number	Diff line
		/*
		* Marvell Wireless LAN device driver: 802.11n Aggregation
		*
		* Copyright (C) 2011, Marvell International Ltd.
		*
		* This software file (the "File") is distributed by Marvell International
		* Ltd. under the terms of the GNU General Public License Version 2, June 1991
		* (the "License"). You may use, redistribute and/or modify this File in
		* accordance with the terms and conditions of the License, a copy of which
		* is available by writing to the Free Software Foundation, Inc.,
		* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
		* worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
		*
		* THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
		* IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
		* ARE EXPRESSLY DISCLAIMED. The License provides additional details about
		* this warranty disclaimer.
		*/

		#include "decl.h"
		#include "ioctl.h"
		#include "util.h"
		#include "fw.h"
		#include "main.h"
		#include "wmm.h"
		#include "11n.h"
		#include "11n_aggr.h"

		/*
		* Creates an AMSDU subframe for aggregation into one AMSDU packet.
		*
		* The resultant AMSDU subframe format is -
		*
		* +---- ~ -----+---- ~ ------+---- ~ -----+----- ~ -----+---- ~ -----+
		* \| DA \| SA \| Length \| SNAP header \| MSDU \|
		* \| data[0..5] \| data[6..11] \| \| \| data[14..] \|
		* +---- ~ -----+---- ~ ------+---- ~ -----+----- ~ -----+---- ~ -----+
		* <--6-bytes--> <--6-bytes--> <--2-bytes--><--8-bytes--> <--n-bytes-->
		*
		* This function also computes the amount of padding required to make the
		* buffer length multiple of 4 bytes.
		*
		* Data => \|DA\|SA\|SNAP-TYPE\|........ .\|
		* MSDU => \|DA\|SA\|Length\|SNAP\|...... ..\|
		*/
		static int
		mwifiex_11n_form_amsdu_pkt(struct mwifiex_adapter *adapter,
		struct sk_buff *skb_aggr,
		struct sk_buff skb_src, int pad)

		{
		int dt_offset;
		struct rfc_1042_hdr snap = {
		0xaa, /* LLC DSAP */
		0xaa, /* LLC SSAP */
		0x03, /* LLC CTRL */
		{0x00, 0x00, 0x00}, /* SNAP OUI */
		0x0000 /* SNAP type */
		/*
		* This field will be overwritten
		* later with ethertype
		*/
		};
		struct tx_packet_hdr *tx_header = NULL;

		skb_put(skb_aggr, sizeof(*tx_header));

		tx_header = (struct tx_packet_hdr *) skb_aggr->data;

		/* Copy DA and SA */
		dt_offset = 2 * ETH_ALEN;
		memcpy(&tx_header->eth803_hdr, skb_src->data, dt_offset);

		/* Copy SNAP header */
		snap.snap_type = (u16 ) ((u8 *)skb_src->data + dt_offset);
		dt_offset += sizeof(u16);

		memcpy(&tx_header->rfc1042_hdr, &snap, sizeof(struct rfc_1042_hdr));

		skb_pull(skb_src, dt_offset);

		/* Update Length field */
		tx_header->eth803_hdr.h_proto = htons(skb_src->len + LLC_SNAP_LEN);

		/* Add payload */
		skb_put(skb_aggr, skb_src->len);
		memcpy(skb_aggr->data + sizeof(*tx_header), skb_src->data,
		skb_src->len);
		*pad = (((skb_src->len + LLC_SNAP_LEN) & 3)) ? (4 - (((skb_src->len +
		LLC_SNAP_LEN)) & 3)) : 0;
		skb_put(skb_aggr, *pad);

		return skb_aggr->len + *pad;
		}

		/*
		* Adds TxPD to AMSDU header.
		*
		* Each AMSDU packet will contain one TxPD at the beginning,
		* followed by multiple AMSDU subframes.
		*/
		static void
		mwifiex_11n_form_amsdu_txpd(struct mwifiex_private *priv,
		struct sk_buff *skb)
		{
		struct txpd *local_tx_pd;

		skb_push(skb, sizeof(*local_tx_pd));

		local_tx_pd = (struct txpd *) skb->data;
		memset(local_tx_pd, 0, sizeof(struct txpd));

		/* Original priority has been overwritten */
		local_tx_pd->priority = (u8) skb->priority;
		local_tx_pd->pkt_delay_2ms =
		mwifiex_wmm_compute_drv_pkt_delay(priv, skb);
		local_tx_pd->bss_num = priv->bss_num;
		local_tx_pd->bss_type = priv->bss_type;
		/* Always zero as the data is followed by struct txpd */
		local_tx_pd->tx_pkt_offset = cpu_to_le16(sizeof(struct txpd));
		local_tx_pd->tx_pkt_type = cpu_to_le16(PKT_TYPE_AMSDU);
		local_tx_pd->tx_pkt_length = cpu_to_le16(skb->len -
		sizeof(*local_tx_pd));

		if (local_tx_pd->tx_control == 0)
		/* TxCtrl set by user or default */
		local_tx_pd->tx_control = cpu_to_le32(priv->pkt_tx_ctrl);

		if ((GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA) &&
		(priv->adapter->pps_uapsd_mode)) {
		if (true == mwifiex_check_last_packet_indication(priv)) {
		priv->adapter->tx_lock_flag = true;
		local_tx_pd->flags =
		MWIFIEX_TxPD_POWER_MGMT_LAST_PACKET;
		}
		}
		}

		/*
		* Counts the number of subframes in an aggregate packet.
		*
		* This function parses an aggregate packet buffer, looking for
		* subframes and counting the number of such subframe found. The
		* function automatically skips the DA/SA fields at the beginning
		* of each subframe and padding at the end.
		*/
		static int
		mwifiex_11n_get_num_aggr_pkts(u8 *data, int total_pkt_len)
		{
		int pkt_count = 0, pkt_len, pad;

		while (total_pkt_len > 0) {
		/* Length will be in network format, change it to host */
		pkt_len = ntohs(((__be16 )(data + 2 * ETH_ALEN)));
		pad = (((pkt_len + sizeof(struct ethhdr)) & 3)) ?
		(4 - ((pkt_len + sizeof(struct ethhdr)) & 3)) : 0;
		data += pkt_len + pad + sizeof(struct ethhdr);
		total_pkt_len -= pkt_len + pad + sizeof(struct ethhdr);
		++pkt_count;
		}

		return pkt_count;
		}

		/*
		* De-aggregate received packets.
		*
		* This function parses the received aggregate buffer, extracts each subframe,
		* strips off the SNAP header from them and sends the data portion for further
		* processing.
		*
		* Each subframe body is copied onto a separate buffer, which are freed by
		* upper layer after processing. The function also performs sanity tests on
		* the received buffer.
		*/
		int mwifiex_11n_deaggregate_pkt(struct mwifiex_private *priv,
		struct sk_buff *skb)
		{
		u16 pkt_len;
		int total_pkt_len;
		u8 *data;
		int pad;
		struct mwifiex_rxinfo *rx_info = MWIFIEX_SKB_RXCB(skb);
		struct rxpd local_rx_pd = (struct rxpd ) skb->data;
		struct sk_buff *skb_daggr;
		struct mwifiex_rxinfo *rx_info_daggr = NULL;
		int ret = -1;
		struct rx_packet_hdr *rx_pkt_hdr;
		struct mwifiex_adapter *adapter = priv->adapter;
		u8 rfc1042_eth_hdr[ETH_ALEN] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00};

		data = (u8 *) (local_rx_pd + local_rx_pd->rx_pkt_offset);
		total_pkt_len = local_rx_pd->rx_pkt_length;

		/* Sanity test */
		if (total_pkt_len > MWIFIEX_RX_DATA_BUF_SIZE) {
		dev_err(adapter->dev, "total pkt len greater than buffer"
		" size %d\n", total_pkt_len);
		return -1;
		}

		rx_info->use_count = mwifiex_11n_get_num_aggr_pkts(data, total_pkt_len);

		while (total_pkt_len > 0) {
		rx_pkt_hdr = (struct rx_packet_hdr *) data;
		/* Length will be in network format, change it to host */
		pkt_len = ntohs(((__be16 ) (data + 2 * ETH_ALEN)));
		if (pkt_len > total_pkt_len) {
		dev_err(adapter->dev, "pkt_len %d > total_pkt_len %d\n",
		total_pkt_len, pkt_len);
		break;
		}

		pad = (((pkt_len + sizeof(struct ethhdr)) & 3)) ?
		(4 - ((pkt_len + sizeof(struct ethhdr)) & 3)) : 0;

		total_pkt_len -= pkt_len + pad + sizeof(struct ethhdr);

		if (memcmp(&rx_pkt_hdr->rfc1042_hdr,
		rfc1042_eth_hdr, sizeof(rfc1042_eth_hdr)) == 0) {
		memmove(data + LLC_SNAP_LEN, data, 2 * ETH_ALEN);
		data += LLC_SNAP_LEN;
		pkt_len += sizeof(struct ethhdr) - LLC_SNAP_LEN;
		} else {
		(u16 ) (data + 2 * ETH_ALEN) = (u16) 0;
		pkt_len += sizeof(struct ethhdr);
		}

		skb_daggr = dev_alloc_skb(pkt_len);
		if (!skb_daggr) {
		dev_err(adapter->dev, "%s: failed to alloc skb_daggr\n",
		__func__);
		return -1;
		}
		rx_info_daggr = MWIFIEX_SKB_RXCB(skb_daggr);

		rx_info_daggr->bss_index = rx_info->bss_index;
		skb_daggr->tstamp = skb->tstamp;
		rx_info_daggr->parent = skb;
		skb_daggr->priority = skb->priority;
		skb_put(skb_daggr, pkt_len);
		memcpy(skb_daggr->data, data, pkt_len);

		ret = mwifiex_recv_packet(adapter, skb_daggr);

		switch (ret) {
		case -EINPROGRESS:
		break;
		case -1:
		dev_err(adapter->dev, "deaggr: host_to_card failed\n");
		case 0:
		mwifiex_recv_packet_complete(adapter, skb_daggr, ret);
		break;
		default:
		break;
		}

		data += pkt_len + pad;
		}

		return ret;
		}

		/*
		* Create aggregated packet.
		*
		* This function creates an aggregated MSDU packet, by combining buffers
		* from the RA list. Each individual buffer is encapsulated as an AMSDU
		* subframe and all such subframes are concatenated together to form the
		* AMSDU packet.
		*
		* A TxPD is also added to the front of the resultant AMSDU packets for
		* transmission. The resultant packets format is -
		*
		* +---- ~ ----+------ ~ ------+------ ~ ------+-..-+------ ~ ------+
		* \| TxPD \|AMSDU sub-frame\|AMSDU sub-frame\| .. \|AMSDU sub-frame\|
		* \| \| 1 \| 2 \| .. \| n \|
		* +---- ~ ----+------ ~ ------+------ ~ ------+ .. +------ ~ ------+
		*/
		int
		mwifiex_11n_aggregate_pkt(struct mwifiex_private *priv,
		struct mwifiex_ra_list_tbl *pra_list, int headroom,
		int ptrindex, unsigned long ra_list_flags)
		__releases(&priv->wmm.ra_list_spinlock)
		{
		struct mwifiex_adapter *adapter = priv->adapter;
		struct sk_buff skb_aggr, skb_src;
		struct mwifiex_txinfo tx_info_aggr, tx_info_src;
		int pad = 0;
		int ret = 0;
		struct mwifiex_tx_param tx_param;
		struct txpd *ptx_pd = NULL;

		if (skb_queue_empty(&pra_list->skb_head)) {
		spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock,
		ra_list_flags);
		return 0;
		}
		skb_src = skb_peek(&pra_list->skb_head);
		tx_info_src = MWIFIEX_SKB_TXCB(skb_src);
		skb_aggr = dev_alloc_skb(adapter->tx_buf_size);
		if (!skb_aggr) {
		dev_err(adapter->dev, "%s: alloc skb_aggr\n", __func__);
		spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock,
		ra_list_flags);
		return -1;
		}
		skb_reserve(skb_aggr, headroom + sizeof(struct txpd));
		tx_info_aggr = MWIFIEX_SKB_TXCB(skb_aggr);

		tx_info_aggr->bss_index = tx_info_src->bss_index;
		skb_aggr->priority = skb_src->priority;

		while (skb_src && ((skb_headroom(skb_aggr) + skb_src->len
		+ LLC_SNAP_LEN)
		<= adapter->tx_buf_size)) {

		if (!skb_queue_empty(&pra_list->skb_head))
		skb_src = skb_dequeue(&pra_list->skb_head);
		else
		skb_src = NULL;

		pra_list->total_pkts_size -= skb_src->len;

		spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock,
		ra_list_flags);
		mwifiex_11n_form_amsdu_pkt(adapter, skb_aggr, skb_src, &pad);

		mwifiex_write_data_complete(adapter, skb_src, 0);

		spin_lock_irqsave(&priv->wmm.ra_list_spinlock, ra_list_flags);

		if (!mwifiex_is_ralist_valid(priv, pra_list, ptrindex)) {
		spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock,
		ra_list_flags);
		return -1;
		}

		if (!skb_queue_empty(&pra_list->skb_head))
		skb_src = skb_peek(&pra_list->skb_head);
		else
		skb_src = NULL;
		}

		spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, ra_list_flags);

		/* Last AMSDU packet does not need padding */
		skb_trim(skb_aggr, skb_aggr->len - pad);

		/* Form AMSDU */
		mwifiex_11n_form_amsdu_txpd(priv, skb_aggr);
		if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA)
		ptx_pd = (struct txpd *)skb_aggr->data;

		skb_push(skb_aggr, headroom);

		tx_param.next_pkt_len = ((pra_list->total_pkts_size) ?
		(((pra_list->total_pkts_size) >
		adapter->tx_buf_size) ? adapter->
		tx_buf_size : pra_list->total_pkts_size +
		LLC_SNAP_LEN + sizeof(struct txpd)) : 0);
		ret = adapter->if_ops.host_to_card(adapter, MWIFIEX_TYPE_DATA,
		skb_aggr->data,
		skb_aggr->len, &tx_param);
		switch (ret) {
		case -EBUSY:
		spin_lock_irqsave(&priv->wmm.ra_list_spinlock, ra_list_flags);
		if (!mwifiex_is_ralist_valid(priv, pra_list, ptrindex)) {
		spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock,
		ra_list_flags);
		mwifiex_write_data_complete(adapter, skb_aggr, -1);
		return -1;
		}
		if ((GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA) &&
		(adapter->pps_uapsd_mode) &&
		(adapter->tx_lock_flag)) {
		priv->adapter->tx_lock_flag = false;
		ptx_pd->flags = 0;
		}

		skb_queue_tail(&pra_list->skb_head, skb_aggr);

		pra_list->total_pkts_size += skb_aggr->len;

		tx_info_aggr->flags \|= MWIFIEX_BUF_FLAG_REQUEUED_PKT;
		spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock,
		ra_list_flags);
		dev_dbg(adapter->dev, "data: -EBUSY is returned\n");
		break;
		case -1:
		adapter->data_sent = false;
		dev_err(adapter->dev, "%s: host_to_card failed: %#x\n",
		__func__, ret);
		adapter->dbg.num_tx_host_to_card_failure++;
		mwifiex_write_data_complete(adapter, skb_aggr, ret);
		return 0;
		case -EINPROGRESS:
		adapter->data_sent = false;
		break;
		case 0:
		mwifiex_write_data_complete(adapter, skb_aggr, ret);
		break;
		default:
		break;
		}
		if (ret != -EBUSY) {
		spin_lock_irqsave(&priv->wmm.ra_list_spinlock, ra_list_flags);
		if (mwifiex_is_ralist_valid(priv, pra_list, ptrindex)) {
		priv->wmm.packets_out[ptrindex]++;
		priv->wmm.tid_tbl_ptr[ptrindex].ra_list_curr = pra_list;
		}
		/* Now bss_prio_cur pointer points to next node */
		adapter->bss_prio_tbl[priv->bss_priority].bss_prio_cur =
		list_first_entry(
		&adapter->bss_prio_tbl[priv->bss_priority]
		.bss_prio_cur->list,
		struct mwifiex_bss_prio_node, list);
		spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock,
		ra_list_flags);
		}

		return 0;
		}