[mirror_ubuntu-hirsute-kernel.git] / drivers / net / wireless / mwifiex / 11n_aggr.c

/*
 * 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 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;

	tx_header = (void *)skb_put(skb_aggr, sizeof(*tx_header));

	/* 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 = ((struct ethhdr *)skb_src->data)->h_proto;

	dt_offset += sizeof(__be16);

	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 */
	memcpy(skb_put(skb_aggr, skb_src->len), skb_src->data, skb_src->len);

	/* Add padding for new MSDU to start from 4 byte boundary */
	*pad = (4 - ((unsigned long)skb_aggr->tail & 0x3)) % 4;

	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;
		}
	}
}

/*
 * 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 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, ret;
	struct mwifiex_tx_param tx_param;
	struct txpd *ptx_pd = NULL;
	struct timeval tv;
	int headroom = adapter->iface_type == MWIFIEX_USB ? 0 : INTF_HEADER_LEN;

	skb_src = skb_peek(&pra_list->skb_head);
	if (!skb_src) {
		spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock,
				       ra_list_flags);
		return 0;
	}

	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_type = tx_info_src->bss_type;
	tx_info_aggr->bss_num = tx_info_src->bss_num;
	skb_aggr->priority = skb_src->priority;

	do_gettimeofday(&tv);
	skb_aggr->tstamp = timeval_to_ktime(tv);

	do {
		/* Check if AMSDU can accommodate this MSDU */
		if (skb_tailroom(skb_aggr) < (skb_src->len + LLC_SNAP_LEN))
			break;

		skb_src = skb_dequeue(&pra_list->skb_head);

		pra_list->total_pkt_count--;

		atomic_dec(&priv->wmm.tx_pkts_queued);

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

		mwifiex_write_data_complete(adapter, skb_src, 0, 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_tailroom(skb_aggr) < pad) {
			pad = 0;
			break;
		}
		skb_put(skb_aggr, pad);

		skb_src = skb_peek(&pra_list->skb_head);

	} while (skb_src);

	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);

	if (adapter->iface_type == MWIFIEX_USB) {
		adapter->data_sent = true;
		ret = adapter->if_ops.host_to_card(adapter, MWIFIEX_USB_EP_DATA,
						   skb_aggr, NULL);
	} else {
		if (skb_src)
			tx_param.next_pkt_len =
					skb_src->len + sizeof(struct txpd);
		else
			tx_param.next_pkt_len = 0;

		ret = adapter->if_ops.host_to_card(adapter, MWIFIEX_TYPE_DATA,
						   skb_aggr, &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, -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;
				if (ptx_pd)
					ptx_pd->flags = 0;
		}

		skb_queue_tail(&pra_list->skb_head, skb_aggr);

		pra_list->total_pkt_count++;

		atomic_inc(&priv->wmm.tx_pkts_queued);

		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:
		if (adapter->iface_type != MWIFIEX_PCIE)
			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, 1, ret);
		return 0;
	case -EINPROGRESS:
		if (adapter->iface_type != MWIFIEX_PCIE)
			adapter->data_sent = false;
		break;
	case 0:
		mwifiex_write_data_complete(adapter, skb_aggr, 1, ret);
		break;
	default:
		break;
	}
	if (ret != -EBUSY) {
		mwifiex_rotate_priolists(priv, pra_list, ptrindex);
	}

	return 0;
}
Commit	Line	Data
5e6e3a92 BZ	1	/*
	2	* Marvell Wireless LAN device driver: 802.11n Aggregation
	3	*
	4	* Copyright (C) 2011, Marvell International Ltd.
	5	*
	6	* This software file (the "File") is distributed by Marvell International
	7	* Ltd. under the terms of the GNU General Public License Version 2, June 1991
	8	* (the "License"). You may use, redistribute and/or modify this File in
	9	* accordance with the terms and conditions of the License, a copy of which
	10	* is available by writing to the Free Software Foundation, Inc.,
	11	* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
	12	* worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
	13	*
	14	* THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
	15	* IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
	16	* ARE EXPRESSLY DISCLAIMED. The License provides additional details about
	17	* this warranty disclaimer.
	18	*/
	19
	20	#include "decl.h"
	21	#include "ioctl.h"
	22	#include "util.h"
	23	#include "fw.h"
	24	#include "main.h"
	25	#include "wmm.h"
	26	#include "11n.h"
	27	#include "11n_aggr.h"
	28
	29	/*
	30	* Creates an AMSDU subframe for aggregation into one AMSDU packet.
	31	*
	32	* The resultant AMSDU subframe format is -
	33	*
	34	* +---- ~ -----+---- ~ ------+---- ~ -----+----- ~ -----+---- ~ -----+
	35	* \| DA \| SA \| Length \| SNAP header \| MSDU \|
	36	* \| data[0..5] \| data[6..11] \| \| \| data[14..] \|
	37	* +---- ~ -----+---- ~ ------+---- ~ -----+----- ~ -----+---- ~ -----+
	38	* <--6-bytes--> <--6-bytes--> <--2-bytes--><--8-bytes--> <--n-bytes-->
	39	*
	40	* This function also computes the amount of padding required to make the
	41	* buffer length multiple of 4 bytes.
	42	*
	43	* Data => \|DA\|SA\|SNAP-TYPE\|........ .\|
	44	* MSDU => \|DA\|SA\|Length\|SNAP\|...... ..\|
	45	*/
	46	static int
572e8f3e	47	mwifiex_11n_form_amsdu_pkt(struct sk_buff *skb_aggr,
5e6e3a92 BZ	48	struct sk_buff skb_src, int pad)
	49
	50	{
	51	int dt_offset;
	52	struct rfc_1042_hdr snap = {
	53	0xaa, /* LLC DSAP */
	54	0xaa, /* LLC SSAP */
	55	0x03, /* LLC CTRL */
	56	{0x00, 0x00, 0x00}, /* SNAP OUI */
	57	0x0000 /* SNAP type */
	58	/*
	59	* This field will be overwritten
	60	* later with ethertype
	61	*/
	62	};
270e58e8	63	struct tx_packet_hdr *tx_header;
5e6e3a92	64
d92a6803	65	tx_header = (void )skb_put(skb_aggr, sizeof(tx_header));
5e6e3a92 BZ	66
	67	/* Copy DA and SA */
	68	dt_offset = 2 * ETH_ALEN;
	69	memcpy(&tx_header->eth803_hdr, skb_src->data, dt_offset);
	70
	71	/* Copy SNAP header */
a6efc5b7 AK	72	snap.snap_type = ((struct ethhdr *)skb_src->data)->h_proto;
	73
	74	dt_offset += sizeof(__be16);
5e6e3a92 BZ	75
	76	memcpy(&tx_header->rfc1042_hdr, &snap, sizeof(struct rfc_1042_hdr));
	77
	78	skb_pull(skb_src, dt_offset);
	79
	80	/* Update Length field */
	81	tx_header->eth803_hdr.h_proto = htons(skb_src->len + LLC_SNAP_LEN);
	82
	83	/* Add payload */
d92a6803 YAP	84	memcpy(skb_put(skb_aggr, skb_src->len), skb_src->data, skb_src->len);
d92a6803 YAP	85
bda1b1b7 YAP	86	/* Add padding for new MSDU to start from 4 byte boundary */
bda1b1b7 YAP	87	*pad = (4 - ((unsigned long)skb_aggr->tail & 0x3)) % 4;
5e6e3a92 BZ	88
	89	return skb_aggr->len + *pad;
	90	}
	91
	92	/*
	93	* Adds TxPD to AMSDU header.
	94	*
	95	* Each AMSDU packet will contain one TxPD at the beginning,
	96	* followed by multiple AMSDU subframes.
	97	*/
	98	static void
	99	mwifiex_11n_form_amsdu_txpd(struct mwifiex_private *priv,
	100	struct sk_buff *skb)
	101	{
	102	struct txpd *local_tx_pd;
	103
	104	skb_push(skb, sizeof(*local_tx_pd));
	105
	106	local_tx_pd = (struct txpd *) skb->data;
	107	memset(local_tx_pd, 0, sizeof(struct txpd));
	108
	109	/* Original priority has been overwritten */
	110	local_tx_pd->priority = (u8) skb->priority;
	111	local_tx_pd->pkt_delay_2ms =
	112	mwifiex_wmm_compute_drv_pkt_delay(priv, skb);
	113	local_tx_pd->bss_num = priv->bss_num;
	114	local_tx_pd->bss_type = priv->bss_type;
	115	/* Always zero as the data is followed by struct txpd */
	116	local_tx_pd->tx_pkt_offset = cpu_to_le16(sizeof(struct txpd));
	117	local_tx_pd->tx_pkt_type = cpu_to_le16(PKT_TYPE_AMSDU);
	118	local_tx_pd->tx_pkt_length = cpu_to_le16(skb->len -
84266841	119	sizeof(*local_tx_pd));
5e6e3a92 BZ	120
	121	if (local_tx_pd->tx_control == 0)
	122	/* TxCtrl set by user or default */
	123	local_tx_pd->tx_control = cpu_to_le32(priv->pkt_tx_ctrl);
	124
84266841 YAP	125	if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA &&
84266841 YAP	126	priv->adapter->pps_uapsd_mode) {
5e6e3a92 BZ	127	if (true == mwifiex_check_last_packet_indication(priv)) {
	128	priv->adapter->tx_lock_flag = true;
	129	local_tx_pd->flags =
	130	MWIFIEX_TxPD_POWER_MGMT_LAST_PACKET;
	131	}
	132	}
	133	}
	134
5e6e3a92 BZ	135	/*
	136	* Create aggregated packet.
	137	*
	138	* This function creates an aggregated MSDU packet, by combining buffers
	139	* from the RA list. Each individual buffer is encapsulated as an AMSDU
	140	* subframe and all such subframes are concatenated together to form the
	141	* AMSDU packet.
	142	*
	143	* A TxPD is also added to the front of the resultant AMSDU packets for
	144	* transmission. The resultant packets format is -
	145	*
	146	* +---- ~ ----+------ ~ ------+------ ~ ------+-..-+------ ~ ------+
	147	* \| TxPD \|AMSDU sub-frame\|AMSDU sub-frame\| .. \|AMSDU sub-frame\|
	148	* \| \| 1 \| 2 \| .. \| n \|
	149	* +---- ~ ----+------ ~ ------+------ ~ ------+ .. +------ ~ ------+
	150	*/
	151	int
	152	mwifiex_11n_aggregate_pkt(struct mwifiex_private *priv,
bd1c6142	153	struct mwifiex_ra_list_tbl *pra_list,
5e6e3a92 BZ	154	int ptrindex, unsigned long ra_list_flags)
	155	__releases(&priv->wmm.ra_list_spinlock)
	156	{
	157	struct mwifiex_adapter *adapter = priv->adapter;
	158	struct sk_buff skb_aggr, skb_src;
	159	struct mwifiex_txinfo tx_info_aggr, tx_info_src;
270e58e8	160	int pad = 0, ret;
5e6e3a92 BZ	161	struct mwifiex_tx_param tx_param;
5e6e3a92 BZ	162	struct txpd *ptx_pd = NULL;
5af3fae3	163	struct timeval tv;
bd1c6142	164	int headroom = adapter->iface_type == MWIFIEX_USB ? 0 : INTF_HEADER_LEN;
5e6e3a92	165
a8fe3293 YAP	166	skb_src = skb_peek(&pra_list->skb_head);
a8fe3293 YAP	167	if (!skb_src) {
5e6e3a92 BZ	168	spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock,
	169	ra_list_flags);
	170	return 0;
	171	}
a8fe3293	172
5e6e3a92 BZ	173	tx_info_src = MWIFIEX_SKB_TXCB(skb_src);
	174	skb_aggr = dev_alloc_skb(adapter->tx_buf_size);
	175	if (!skb_aggr) {
	176	dev_err(adapter->dev, "%s: alloc skb_aggr\n", __func__);
	177	spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock,
	178	ra_list_flags);
	179	return -1;
	180	}
	181	skb_reserve(skb_aggr, headroom + sizeof(struct txpd));
	182	tx_info_aggr = MWIFIEX_SKB_TXCB(skb_aggr);
	183
9da9a3b2 YAP	184	tx_info_aggr->bss_type = tx_info_src->bss_type;
9da9a3b2 YAP	185	tx_info_aggr->bss_num = tx_info_src->bss_num;
5e6e3a92 BZ	186	skb_aggr->priority = skb_src->priority;
5e6e3a92 BZ	187
5af3fae3 AP	188	do_gettimeofday(&tv);
	189	skb_aggr->tstamp = timeval_to_ktime(tv);
	190
fb3c19bc YAP	191	do {
	192	/* Check if AMSDU can accommodate this MSDU */
	193	if (skb_tailroom(skb_aggr) < (skb_src->len + LLC_SNAP_LEN))
	194	break;
5e6e3a92	195
a8fe3293	196	skb_src = skb_dequeue(&pra_list->skb_head);
5e6e3a92	197
c7d9ed9e	198	pra_list->total_pkt_count--;
5e6e3a92	199
f699254c MY	200	atomic_dec(&priv->wmm.tx_pkts_queued);
f699254c MY	201
5e6e3a92 BZ	202	spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock,
5e6e3a92 BZ	203	ra_list_flags);
572e8f3e	204	mwifiex_11n_form_amsdu_pkt(skb_aggr, skb_src, &pad);
5e6e3a92	205
47411a06	206	mwifiex_write_data_complete(adapter, skb_src, 0, 0);
5e6e3a92 BZ	207
	208	spin_lock_irqsave(&priv->wmm.ra_list_spinlock, ra_list_flags);
	209
	210	if (!mwifiex_is_ralist_valid(priv, pra_list, ptrindex)) {
	211	spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock,
	212	ra_list_flags);
	213	return -1;
	214	}
	215
fb3c19bc YAP	216	if (skb_tailroom(skb_aggr) < pad) {
	217	pad = 0;
	218	break;
	219	}
	220	skb_put(skb_aggr, pad);
	221
a8fe3293	222	skb_src = skb_peek(&pra_list->skb_head);
fb3c19bc YAP	223
fb3c19bc YAP	224	} while (skb_src);
5e6e3a92 BZ	225
	226	spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, ra_list_flags);
	227
	228	/* Last AMSDU packet does not need padding */
	229	skb_trim(skb_aggr, skb_aggr->len - pad);
	230
	231	/* Form AMSDU */
	232	mwifiex_11n_form_amsdu_txpd(priv, skb_aggr);
	233	if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA)
	234	ptx_pd = (struct txpd *)skb_aggr->data;
	235
	236	skb_push(skb_aggr, headroom);
	237
4daffe35 AK	238	if (adapter->iface_type == MWIFIEX_USB) {
	239	adapter->data_sent = true;
	240	ret = adapter->if_ops.host_to_card(adapter, MWIFIEX_USB_EP_DATA,
	241	skb_aggr, NULL);
	242	} else {
b2a13a25 AK	243	if (skb_src)
	244	tx_param.next_pkt_len =
	245	skb_src->len + sizeof(struct txpd);
	246	else
	247	tx_param.next_pkt_len = 0;
4daffe35 AK	248
	249	ret = adapter->if_ops.host_to_card(adapter, MWIFIEX_TYPE_DATA,
	250	skb_aggr, &tx_param);
	251	}
5e6e3a92 BZ	252	switch (ret) {
	253	case -EBUSY:
	254	spin_lock_irqsave(&priv->wmm.ra_list_spinlock, ra_list_flags);
	255	if (!mwifiex_is_ralist_valid(priv, pra_list, ptrindex)) {
	256	spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock,
	257	ra_list_flags);
47411a06	258	mwifiex_write_data_complete(adapter, skb_aggr, 1, -1);
5e6e3a92 BZ	259	return -1;
5e6e3a92 BZ	260	}
84266841 YAP	261	if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA &&
84266841 YAP	262	adapter->pps_uapsd_mode && adapter->tx_lock_flag) {
5e6e3a92	263	priv->adapter->tx_lock_flag = false;
b53575ec CF	264	if (ptx_pd)
b53575ec CF	265	ptx_pd->flags = 0;
5e6e3a92 BZ	266	}
	267
	268	skb_queue_tail(&pra_list->skb_head, skb_aggr);
	269
c7d9ed9e	270	pra_list->total_pkt_count++;
5e6e3a92	271
f699254c MY	272	atomic_inc(&priv->wmm.tx_pkts_queued);
f699254c MY	273
5e6e3a92 BZ	274	tx_info_aggr->flags \|= MWIFIEX_BUF_FLAG_REQUEUED_PKT;
	275	spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock,
	276	ra_list_flags);
	277	dev_dbg(adapter->dev, "data: -EBUSY is returned\n");
	278	break;
	279	case -1:
e7f767a7 AP	280	if (adapter->iface_type != MWIFIEX_PCIE)
e7f767a7 AP	281	adapter->data_sent = false;
5e6e3a92	282	dev_err(adapter->dev, "%s: host_to_card failed: %#x\n",
84266841	283	__func__, ret);
5e6e3a92	284	adapter->dbg.num_tx_host_to_card_failure++;
47411a06	285	mwifiex_write_data_complete(adapter, skb_aggr, 1, ret);
5e6e3a92 BZ	286	return 0;
5e6e3a92 BZ	287	case -EINPROGRESS:
e7f767a7 AP	288	if (adapter->iface_type != MWIFIEX_PCIE)
e7f767a7 AP	289	adapter->data_sent = false;
5e6e3a92 BZ	290	break;
5e6e3a92 BZ	291	case 0:
47411a06	292	mwifiex_write_data_complete(adapter, skb_aggr, 1, ret);
5e6e3a92 BZ	293	break;
	294	default:
	295	break;
	296	}
	297	if (ret != -EBUSY) {
2e237319	298	mwifiex_rotate_priolists(priv, pra_list, ptrindex);
5e6e3a92 BZ	299	}
	300
	301	return 0;
	302	}