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mwifiex: add support for Marvell USB8797 chipset 

This patch supports Avastar 88W8797 chipset with USB interface.

The corresponding firmware image file is located at:
"mrvl/usb8797_uapsta.bin"

Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: Kiran Divekar <dkiran@marvell.com>
Signed-off-by: Frank Huang <frankh@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Amitkumar Karwar 2012-04-18 20:08:28 -07:00 committed by John W. Linville
parent aee286c2cf
commit 4daffe3543
17 changed files with 1397 additions and 69 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/net/wireless/mwifiex/11n_aggr.c
View File

@ -233,6 +233,11 @@ mwifiex_11n_aggregate_pkt(struct mwifiex_private *priv,
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 {
/*
* Padding per MSDU will affect the length of next
* packet and hence the exact length of next packet
@ -248,6 +253,7 @@ mwifiex_11n_aggregate_pkt(struct mwifiex_private *priv,
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);

11
drivers/net/wireless/mwifiex/Kconfig
View File

@ -30,3 +30,14 @@ config MWIFIEX_PCIE
If you choose to build it as a module, it will be called
mwifiex_pcie.
config MWIFIEX_USB
tristate "Marvell WiFi-Ex Driver for USB8797"
depends on MWIFIEX && USB
select FW_LOADER
---help---
This adds support for wireless adapters based on Marvell
Avastar 88W8797 chipset with USB interface.
If you choose to build it as a module, it will be called
mwifiex_usb.

3
drivers/net/wireless/mwifiex/Makefile
View File

@ -42,3 +42,6 @@ obj-$(CONFIG_MWIFIEX_SDIO) += mwifiex_sdio.o
mwifiex_pcie-y += pcie.o
obj-$(CONFIG_MWIFIEX_PCIE) += mwifiex_pcie.o
mwifiex_usb-y += usb.o
obj-$(CONFIG_MWIFIEX_USB) += mwifiex_usb.o

45
drivers/net/wireless/mwifiex/cmdevt.c
View File

@ -139,6 +139,7 @@ static int mwifiex_dnld_cmd_to_fw(struct mwifiex_private *priv,
uint16_t cmd_size;
struct timeval tstamp;
unsigned long flags;
__le32 tmp;
if (!adapter || !cmd_node)
return -1;
@ -178,15 +179,28 @@ static int mwifiex_dnld_cmd_to_fw(struct mwifiex_private *priv,
le16_to_cpu(*(__le16 *) ((u8 *) host_cmd + S_DS_GEN)), cmd_size,
le16_to_cpu(host_cmd->seq_num));
if (adapter->iface_type == MWIFIEX_USB) {
tmp = cpu_to_le32(MWIFIEX_USB_TYPE_CMD);
skb_push(cmd_node->cmd_skb, MWIFIEX_TYPE_LEN);
memcpy(cmd_node->cmd_skb->data, &tmp, MWIFIEX_TYPE_LEN);
adapter->cmd_sent = true;
ret = adapter->if_ops.host_to_card(adapter,
MWIFIEX_USB_EP_CMD_EVENT,
cmd_node->cmd_skb, NULL);
skb_pull(cmd_node->cmd_skb, MWIFIEX_TYPE_LEN);
if (ret == -EBUSY)
cmd_node->cmd_skb = NULL;
} else {
skb_push(cmd_node->cmd_skb, INTF_HEADER_LEN);
ret = adapter->if_ops.host_to_card(adapter, MWIFIEX_TYPE_CMD,
cmd_node->cmd_skb, NULL);
skb_pull(cmd_node->cmd_skb, INTF_HEADER_LEN);
}
if (ret == -1) {
dev_err(adapter->dev, "DNLD_CMD: host to card failed\n");
if (adapter->iface_type == MWIFIEX_USB)
adapter->cmd_sent = false;
if (cmd_node->wait_q_enabled)
adapter->cmd_wait_q.status = -1;
mwifiex_insert_cmd_to_free_q(adapter, adapter->curr_cmd);
@ -232,6 +246,9 @@ static int mwifiex_dnld_sleep_confirm_cmd(struct mwifiex_adapter *adapter)
struct mwifiex_opt_sleep_confirm *sleep_cfm_buf =
(struct mwifiex_opt_sleep_confirm *)
adapter->sleep_cfm->data;
struct sk_buff *sleep_cfm_tmp;
__le32 tmp;
priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
sleep_cfm_buf->seq_num =
@ -240,10 +257,28 @@ static int mwifiex_dnld_sleep_confirm_cmd(struct mwifiex_adapter *adapter)
priv->bss_type)));
adapter->seq_num++;
if (adapter->iface_type == MWIFIEX_USB) {
sleep_cfm_tmp =
dev_alloc_skb(sizeof(struct mwifiex_opt_sleep_confirm)
+ MWIFIEX_TYPE_LEN);
skb_put(sleep_cfm_tmp, sizeof(struct mwifiex_opt_sleep_confirm)
+ MWIFIEX_TYPE_LEN);
tmp = cpu_to_le32(MWIFIEX_USB_TYPE_CMD);
memcpy(sleep_cfm_tmp->data, &tmp, MWIFIEX_TYPE_LEN);
memcpy(sleep_cfm_tmp->data + MWIFIEX_TYPE_LEN,
adapter->sleep_cfm->data,
sizeof(struct mwifiex_opt_sleep_confirm));
ret = adapter->if_ops.host_to_card(adapter,
MWIFIEX_USB_EP_CMD_EVENT,
sleep_cfm_tmp, NULL);
if (ret != -EBUSY)
dev_kfree_skb_any(sleep_cfm_tmp);
} else {
skb_push(adapter->sleep_cfm, INTF_HEADER_LEN);
ret = adapter->if_ops.host_to_card(adapter, MWIFIEX_TYPE_CMD,
adapter->sleep_cfm, NULL);
skb_pull(adapter->sleep_cfm, INTF_HEADER_LEN);
}
if (ret == -1) {
dev_err(adapter->dev, "SLEEP_CFM: failed\n");
@ -343,6 +378,11 @@ int mwifiex_free_cmd_buffer(struct mwifiex_adapter *adapter)
}
if (!cmd_array[i].resp_skb)
continue;
if (adapter->iface_type == MWIFIEX_USB)
adapter->if_ops.cmdrsp_complete(adapter,
cmd_array[i].resp_skb);
else
dev_kfree_skb_any(cmd_array[i].resp_skb);
}
/* Release struct cmd_ctrl_node */
@ -1083,6 +1123,7 @@ mwifiex_process_hs_config(struct mwifiex_adapter *adapter)
MWIFIEX_BSS_ROLE_ANY),
false);
}
EXPORT_SYMBOL_GPL(mwifiex_process_hs_config);
/*
* This function handles the command response of a sleep confirm command.

1
drivers/net/wireless/mwifiex/decl.h
View File

@ -53,6 +53,7 @@
#define MWIFIEX_RATE_BITMAP_MCS127 159
#define MWIFIEX_RX_DATA_BUF_SIZE (4 * 1024)
#define MWIFIEX_RX_CMD_BUF_SIZE (2 * 1024)
#define MWIFIEX_RTS_MIN_VALUE (0)
#define MWIFIEX_RTS_MAX_VALUE (2347)

5
drivers/net/wireless/mwifiex/fw.h
View File

@ -81,6 +81,11 @@ enum KEY_TYPE_ID {
#define FIRMWARE_READY_SDIO 0xfedc
#define FIRMWARE_READY_PCIE 0xfedcba00
enum mwifiex_usb_ep {
MWIFIEX_USB_EP_CMD_EVENT = 1,
MWIFIEX_USB_EP_DATA = 2,
};
enum MWIFIEX_802_11_PRIVACY_FILTER {
MWIFIEX_802_11_PRIV_FILTER_ACCEPT_ALL,
MWIFIEX_802_11_PRIV_FILTER_8021X_WEP

36
drivers/net/wireless/mwifiex/init.c
View File

@ -188,10 +188,10 @@ static void mwifiex_init_adapter(struct mwifiex_adapter *adapter)
adapter->cmd_sent = false;
if (adapter->iface_type == MWIFIEX_PCIE)
adapter->data_sent = false;
else
if (adapter->iface_type == MWIFIEX_SDIO)
adapter->data_sent = true;
else
adapter->data_sent = false;
adapter->cmd_resp_received = false;
adapter->event_received = false;
@ -379,6 +379,7 @@ mwifiex_free_adapter(struct mwifiex_adapter *adapter)
dev_dbg(adapter->dev, "info: free scan table\n");
if (adapter->if_ops.cleanup_if)
adapter->if_ops.cleanup_if(adapter);
if (adapter->sleep_cfm)
@ -419,6 +420,8 @@ int mwifiex_init_lock_list(struct mwifiex_adapter *adapter)
spin_lock_init(&adapter->cmd_pending_q_lock);
spin_lock_init(&adapter->scan_pending_q_lock);
skb_queue_head_init(&adapter->usb_rx_data_q);
for (i = 0; i < adapter->priv_num; ++i) {
INIT_LIST_HEAD(&adapter->bss_prio_tbl[i].bss_prio_head);
adapter->bss_prio_tbl[i].bss_prio_cur = NULL;
@ -574,6 +577,7 @@ mwifiex_shutdown_drv(struct mwifiex_adapter *adapter)
struct mwifiex_private *priv;
s32 i;
unsigned long flags;
struct sk_buff *skb;
/* mwifiex already shutdown */
if (adapter->hw_status == MWIFIEX_HW_STATUS_NOT_READY)
@ -601,6 +605,18 @@ mwifiex_shutdown_drv(struct mwifiex_adapter *adapter)
spin_lock_irqsave(&adapter->mwifiex_lock, flags);
if (adapter->if_ops.data_complete) {
while ((skb = skb_dequeue(&adapter->usb_rx_data_q))) {
struct mwifiex_rxinfo *rx_info = MWIFIEX_SKB_RXCB(skb);
priv = adapter->priv[rx_info->bss_num];
if (priv)
priv->stats.rx_dropped++;
adapter->if_ops.data_complete(adapter, skb);
}
}
/* Free adapter structure */
mwifiex_free_adapter(adapter);
@ -630,24 +646,28 @@ int mwifiex_dnld_fw(struct mwifiex_adapter *adapter,
int ret;
u32 poll_num = 1;
if (adapter->if_ops.check_fw_status) {
adapter->winner = 0;
/* Check if firmware is already running */
/* check if firmware is already running */
ret = adapter->if_ops.check_fw_status(adapter, poll_num);
if (!ret) {
dev_notice(adapter->dev,
"WLAN FW already running! Skip FW download\n");
"WLAN FW already running! Skip FW dnld\n");
goto done;
}
poll_num = MAX_FIRMWARE_POLL_TRIES;
/* Check if we are the winner for downloading FW */
/* check if we are the winner for downloading FW */
if (!adapter->winner) {
dev_notice(adapter->dev,
"Other intf already running! Skip FW download\n");
"FW already running! Skip FW dnld\n");
poll_num = MAX_MULTI_INTERFACE_POLL_TRIES;
goto poll_fw;
}
}
if (pmfw) {
/* Download firmware with helper */
ret = adapter->if_ops.prog_fw(adapter, pmfw);
@ -666,6 +686,8 @@ poll_fw:
}
done:
/* re-enable host interrupt for mwifiex after fw dnld is successful */
if (adapter->if_ops.enable_int)
adapter->if_ops.enable_int(adapter);
return ret;
}

14
drivers/net/wireless/mwifiex/main.c
View File

@ -58,6 +58,7 @@ static int mwifiex_register(void *card, struct mwifiex_if_ops *if_ops,
memmove(&adapter->if_ops, if_ops, sizeof(struct mwifiex_if_ops));
/* card specific initialization has been deferred until now .. */
if (adapter->if_ops.init_if)
if (adapter->if_ops.init_if(adapter))
goto error;
@ -140,6 +141,7 @@ int mwifiex_main_process(struct mwifiex_adapter *adapter)
{
int ret = 0;
unsigned long flags;
struct sk_buff *skb;
spin_lock_irqsave(&adapter->main_proc_lock, flags);
@ -161,6 +163,7 @@ process_start:
if (adapter->int_status) {
if (adapter->hs_activated)
mwifiex_process_hs_config(adapter);
if (adapter->if_ops.process_int_status)
adapter->if_ops.process_int_status(adapter);
}
@ -174,6 +177,7 @@ process_start:
adapter->if_ops.wakeup(adapter);
continue;
}
if (IS_CARD_RX_RCVD(adapter)) {
adapter->pm_wakeup_fw_try = false;
if (adapter->ps_state == PS_STATE_SLEEP)
@ -194,6 +198,11 @@ process_start:
}
}
/* Check Rx data for USB */
if (adapter->iface_type == MWIFIEX_USB)
while ((skb = skb_dequeue(&adapter->usb_rx_data_q)))
mwifiex_handle_rx_packet(adapter, skb);
/* Check for Cmd Resp */
if (adapter->cmd_resp_received) {
adapter->cmd_resp_received = false;
@ -317,6 +326,9 @@ static void mwifiex_fw_dpc(const struct firmware *firmware, void *context)
fw.fw_buf = (u8 *) adapter->firmware->data;
fw.fw_len = adapter->firmware->size;
if (adapter->if_ops.dnld_fw)
ret = adapter->if_ops.dnld_fw(adapter, &fw);
else
ret = mwifiex_dnld_fw(adapter, &fw);
if (ret == -1)
goto done;
@ -731,6 +743,7 @@ mwifiex_add_card(void *card, struct semaphore *sem,
err_init_fw:
pr_debug("info: %s: unregister device\n", __func__);
if (adapter->if_ops.unregister_dev)
adapter->if_ops.unregister_dev(adapter);
err_registerdev:
adapter->surprise_removed = true;
@ -836,6 +849,7 @@ int mwifiex_remove_card(struct mwifiex_adapter *adapter, struct semaphore *sem)
/* Unregister device */
dev_dbg(adapter->dev, "info: unregister device\n");
if (adapter->if_ops.unregister_dev)
adapter->if_ops.unregister_dev(adapter);
/* Free adapter structure */
dev_dbg(adapter->dev, "info: free adapter\n");

18
drivers/net/wireless/mwifiex/main.h
View File

@ -92,9 +92,16 @@ enum {
#define MWIFIEX_OUI_NOT_PRESENT 0
#define MWIFIEX_OUI_PRESENT 1
/*
* Do not check for data_received for USB, as data_received
* is handled in mwifiex_usb_recv for USB
*/
#define IS_CARD_RX_RCVD(adapter) (adapter->cmd_resp_received || \
adapter->event_received || \
adapter->data_received)
((adapter->iface_type != MWIFIEX_USB) && \
adapter->data_received) || \
((adapter->iface_type == MWIFIEX_USB) && \
!skb_queue_empty(&adapter->usb_rx_data_q)))
#define MWIFIEX_TYPE_CMD 1
#define MWIFIEX_TYPE_DATA 0
@ -110,6 +117,11 @@ enum {
#define MWIFIEX_EVENT_HEADER_LEN 4
#define MWIFIEX_TYPE_LEN 4
#define MWIFIEX_USB_TYPE_CMD 0xF00DFACE
#define MWIFIEX_USB_TYPE_DATA 0xBEADC0DE
#define MWIFIEX_USB_TYPE_EVENT 0xBEEFFACE
struct mwifiex_dbg {
u32 num_cmd_host_to_card_failure;
u32 num_cmd_sleep_cfm_host_to_card_failure;
@ -162,6 +174,7 @@ enum MWIFIEX_PS_STATE {
enum mwifiex_iface_type {
MWIFIEX_SDIO,
MWIFIEX_PCIE,
MWIFIEX_USB
};
struct mwifiex_add_ba_param {
@ -546,6 +559,8 @@ struct mwifiex_if_ops {
void (*cleanup_mpa_buf) (struct mwifiex_adapter *);
int (*cmdrsp_complete) (struct mwifiex_adapter *, struct sk_buff *);
int (*event_complete) (struct mwifiex_adapter *, struct sk_buff *);
int (*data_complete) (struct mwifiex_adapter *, struct sk_buff *);
int (*dnld_fw) (struct mwifiex_adapter *, struct mwifiex_fw_image *);
};
struct mwifiex_adapter {
@ -608,6 +623,7 @@ struct mwifiex_adapter {
struct list_head scan_pending_q;
/* spin lock for scan_pending_q */
spinlock_t scan_pending_q_lock;
struct sk_buff_head usb_rx_data_q;
u32 scan_processing;
u16 region_code;
struct mwifiex_802_11d_domain_reg domain_reg;

2
drivers/net/wireless/mwifiex/sta_cmd.c
View File

@ -1293,7 +1293,7 @@ int mwifiex_sta_init_cmd(struct mwifiex_private *priv, u8 first_sta)
if (ret)
return -1;
if (first_sta) {
if (first_sta && (priv->adapter->iface_type != MWIFIEX_USB)) {
/* Enable auto deep sleep */
auto_ds.auto_ds = DEEP_SLEEP_ON;
auto_ds.idle_time = DEEP_SLEEP_IDLE_TIME;

11
drivers/net/wireless/mwifiex/sta_rx.c
View File

@ -145,7 +145,12 @@ int mwifiex_process_sta_rx_packet(struct mwifiex_adapter *adapter,
" rx_pkt_offset=%d, rx_pkt_length=%d\n", skb->len,
local_rx_pd->rx_pkt_offset, local_rx_pd->rx_pkt_length);
priv->stats.rx_dropped++;
if (adapter->if_ops.data_complete)
adapter->if_ops.data_complete(adapter, skb);
else
dev_kfree_skb_any(skb);
return ret;
}
@ -196,8 +201,12 @@ int mwifiex_process_sta_rx_packet(struct mwifiex_adapter *adapter,
(u8) local_rx_pd->rx_pkt_type,
skb);
if (ret || (rx_pkt_type == PKT_TYPE_BAR))
if (ret || (rx_pkt_type == PKT_TYPE_BAR)) {
if (adapter->if_ops.data_complete)
adapter->if_ops.data_complete(adapter, skb);
else
dev_kfree_skb_any(skb);
}
if (ret)
priv->stats.rx_dropped++;

6
drivers/net/wireless/mwifiex/sta_tx.c
View File

@ -149,10 +149,14 @@ int mwifiex_send_null_packet(struct mwifiex_private *priv, u8 flags)
local_tx_pd->bss_num = priv->bss_num;
local_tx_pd->bss_type = priv->bss_type;
if (adapter->iface_type == MWIFIEX_USB) {
ret = adapter->if_ops.host_to_card(adapter, MWIFIEX_USB_EP_DATA,
skb, NULL);
} else {
skb_push(skb, INTF_HEADER_LEN);
ret = adapter->if_ops.host_to_card(adapter, MWIFIEX_TYPE_DATA,
skb, NULL);
}
switch (ret) {
case -EBUSY:
adapter->data_sent = true;

19
drivers/net/wireless/mwifiex/txrx.c
View File

@ -77,12 +77,23 @@ int mwifiex_process_tx(struct mwifiex_private *priv, struct sk_buff *skb,
if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA)
local_tx_pd =
(struct txpd *) (head_ptr + INTF_HEADER_LEN);
ret = adapter->if_ops.host_to_card(adapter, MWIFIEX_TYPE_DATA,
if (adapter->iface_type == MWIFIEX_USB) {
adapter->data_sent = true;
skb_pull(skb, INTF_HEADER_LEN);
ret = adapter->if_ops.host_to_card(adapter,
MWIFIEX_USB_EP_DATA,
skb, NULL);
} else {
ret = adapter->if_ops.host_to_card(adapter,
MWIFIEX_TYPE_DATA,
skb, tx_param);
}
}
switch (ret) {
case -ENOSR:
dev_err(adapter->dev, "data: -ENOSR is returned\n");
break;
case -EBUSY:
if ((GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA) &&
(adapter->pps_uapsd_mode) && (adapter->tx_lock_flag)) {
@ -135,6 +146,9 @@ int mwifiex_write_data_complete(struct mwifiex_adapter *adapter,
if (!priv)
goto done;
if (adapter->iface_type == MWIFIEX_USB)
adapter->data_sent = false;
mwifiex_set_trans_start(priv->netdev);
if (!status) {
priv->stats.tx_packets++;
@ -162,4 +176,5 @@ done:
return 0;
}
EXPORT_SYMBOL_GPL(mwifiex_write_data_complete);

1052
drivers/net/wireless/mwifiex/usb.c Normal file
View File

File diff suppressed because it is too large Load Diff

99
drivers/net/wireless/mwifiex/usb.h Normal file
View File

@ -0,0 +1,99 @@
/*
* This file contains definitions for mwifiex USB interface driver.
*
* Copyright (C) 2012, 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_USB_H
#define _MWIFIEX_USB_H
#include <linux/usb.h>
#define USB8797_VID 0x1286
#define USB8797_PID_1 0x2043
#define USB8797_PID_2 0x2044
#define USB8797_FW_DNLD 1
#define USB8797_FW_READY 2
#define USB8797_FW_MAX_RETRY 3
#define MWIFIEX_TX_DATA_URB 6
#define MWIFIEX_RX_DATA_URB 6
#define MWIFIEX_USB_TIMEOUT 100
#define USB8797_DEFAULT_FW_NAME "mrvl/usb8797_uapsta.bin"
#define FW_DNLD_TX_BUF_SIZE 620
#define FW_DNLD_RX_BUF_SIZE 2048
#define FW_HAS_LAST_BLOCK 0x00000004
#define FW_DATA_XMIT_SIZE \
(sizeof(struct fw_header) + dlen + sizeof(u32))
struct urb_context {
struct mwifiex_adapter *adapter;
struct sk_buff *skb;
struct urb *urb;
u8 ep;
};
struct usb_card_rec {
struct mwifiex_adapter *adapter;
struct usb_device *udev;
struct usb_interface *intf;
u8 rx_cmd_ep;
struct urb_context rx_cmd;
atomic_t rx_cmd_urb_pending;
struct urb_context rx_data_list[MWIFIEX_RX_DATA_URB];
u8 usb_boot_state;
u8 rx_data_ep;
atomic_t rx_data_urb_pending;
u8 tx_data_ep;
u8 tx_cmd_ep;
atomic_t tx_data_urb_pending;
atomic_t tx_cmd_urb_pending;
int bulk_out_maxpktsize;
struct urb_context tx_cmd;
int tx_data_ix;
struct urb_context tx_data_list[MWIFIEX_TX_DATA_URB];
};
struct fw_header {
__le32 dnld_cmd;
__le32 base_addr;
__le32 data_len;
__le32 crc;
};
struct fw_sync_header {
__le32 cmd;
__le32 seq_num;
};
struct fw_data {
struct fw_header fw_hdr;
__le32 seq_num;
u8 data[1];
};
/* This function is called after the card has woken up. */
static inline int
mwifiex_pm_wakeup_card_complete(struct mwifiex_adapter *adapter)
{
return 0;
}
#endif /*_MWIFIEX_USB_H */

22
drivers/net/wireless/mwifiex/util.c
View File

@ -167,6 +167,28 @@ int mwifiex_recv_packet(struct mwifiex_adapter *adapter, struct sk_buff *skb)
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 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 ((adapter->iface_type == MWIFIEX_USB) &&
(skb->truesize > MWIFIEX_RX_DATA_BUF_SIZE))
skb->truesize += (skb->len - MWIFIEX_RX_DATA_BUF_SIZE);
priv->stats.rx_bytes += skb->len;
priv->stats.rx_packets++;
if (in_interrupt())

12
drivers/net/wireless/mwifiex/wmm.c
View File

@ -1120,11 +1120,19 @@ mwifiex_send_processed_packet(struct mwifiex_private *priv,
tx_info = MWIFIEX_SKB_TXCB(skb);
spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, ra_list_flags);
if (adapter->iface_type == MWIFIEX_USB) {
adapter->data_sent = true;
ret = adapter->if_ops.host_to_card(adapter, MWIFIEX_USB_EP_DATA,
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);
ret = adapter->if_ops.host_to_card(adapter, MWIFIEX_TYPE_DATA,
skb, &tx_param);
}
switch (ret) {
case -EBUSY:
dev_dbg(adapter->dev, "data: -EBUSY is returned\n");