On Fri, 2008-03-28 at 12:40 -0400, Dan Williams wrote:
> This patch (based of Holger's work, thanks!) uses a kfifo object for
> events and a swapping buffer scheme for the command response to preserve
> the zero-copy semantics of the CF driver and keep memory usage low. The
> main thread should only ever touch the buffer indexed by priv->resp_idx,
> while the interface code is free to write to the second buffer, then
> swap priv->resp_idx under the driver spinlock. The firmware specs only
> permit one in-flight command, so there will only ever be one command
> response to process at a time.
>
> It's been tested lightly on USB, SDIO, and CF. I'd like wider testing
> on CF as this patch causes SSH transfers to stall (only on CF!), and I'm
> beginning to think my WL54-CF is "special" or something. If you could
> take a look Holger, that would be great. This patch should be
> "mergable" as I fixed up the other uses of intcause.
>
> Further cleanups to command processing would involve moving the command
> timeout flag (priv->cmd_timed_out), the command response value
> (priv->cur_cmd_retcode), and #tries (priv->nr_retries) to the
> cmd_ctrl_node structure instead of being in priv. Could also move most
> of the timeout logic to lbs_process_command_response().
>
> Signed-off-by: Dan Williams <dcbw@xxxxxxxxxx>
It line-wrapped, sorry. Resent below.
diff --git a/drivers/net/wireless/libertas/cmd.c b/drivers/net/wireless/libertas/cmd.c
index 4c44e12..aa1bec4 100644
--- a/drivers/net/wireless/libertas/cmd.c
+++ b/drivers/net/wireless/libertas/cmd.c
@@ -4,6 +4,7 @@
*/
#include <net/iw_handler.h>
+#include <linux/kfifo.h>
#include "host.h"
#include "hostcmd.h"
#include "decl.h"
@@ -1826,15 +1827,20 @@ static void lbs_send_confirmsleep(struct lbs_private *priv)
ret = priv->hw_host_to_card(priv, MVMS_CMD, (u8 *) &confirm_sleep,
sizeof(confirm_sleep));
-
if (ret) {
lbs_pr_alert("confirm_sleep failed\n");
- } else {
- spin_lock_irqsave(&priv->driver_lock, flags);
- if (!priv->intcounter)
- priv->psstate = PS_STATE_SLEEP;
- spin_unlock_irqrestore(&priv->driver_lock, flags);
+ goto out;
}
+
+ spin_lock_irqsave(&priv->driver_lock, flags);
+
+ /* If nothing to do, go back to sleep (?) */
+ if (!__kfifo_len(priv->event_fifo) && !priv->resp_len[priv->resp_idx])
+ priv->psstate = PS_STATE_SLEEP;
+
+ spin_unlock_irqrestore(&priv->driver_lock, flags);
+
+out:
lbs_deb_leave(LBS_DEB_HOST);
}
@@ -1896,13 +1902,16 @@ void lbs_ps_confirm_sleep(struct lbs_private *priv)
}
spin_lock_irqsave(&priv->driver_lock, flags);
+ /* In-progress command? */
if (priv->cur_cmd) {
allowed = 0;
lbs_deb_host("cur_cmd was set\n");
}
- if (priv->intcounter > 0) {
+
+ /* Pending events or command responses? */
+ if (__kfifo_len(priv->event_fifo) || priv->resp_len[priv->resp_idx]) {
allowed = 0;
- lbs_deb_host("intcounter %d\n", priv->intcounter);
+ lbs_deb_host("pending events or command responses\n");
}
spin_unlock_irqrestore(&priv->driver_lock, flags);
diff --git a/drivers/net/wireless/libertas/cmdresp.c b/drivers/net/wireless/libertas/cmdresp.c
index cce0958..d5d736e 100644
--- a/drivers/net/wireless/libertas/cmdresp.c
+++ b/drivers/net/wireless/libertas/cmdresp.c
@@ -341,7 +341,7 @@ static inline int handle_cmd_response(struct lbs_private *priv,
return ret;
}
-int lbs_process_rx_command(struct lbs_private *priv)
+int lbs_process_command_response(struct lbs_private *priv, u8 *data, u32 len)
{
uint16_t respcmd, curcmd;
struct cmd_header *resp;
@@ -361,14 +361,14 @@ int lbs_process_rx_command(struct lbs_private *priv)
goto done;
}
- resp = (void *)priv->upld_buf;
+ resp = (void *)data;
curcmd = le16_to_cpu(priv->cur_cmd->cmdbuf->command);
respcmd = le16_to_cpu(resp->command);
result = le16_to_cpu(resp->result);
lbs_deb_cmd("CMD_RESP: response 0x%04x, seq %d, size %d\n",
- respcmd, le16_to_cpu(resp->seqnum), priv->upld_len);
- lbs_deb_hex(LBS_DEB_CMD, "CMD_RESP", (void *) resp, priv->upld_len);
+ respcmd, le16_to_cpu(resp->seqnum), len);
+ lbs_deb_hex(LBS_DEB_CMD, "CMD_RESP", (void *) resp, len);
if (resp->seqnum != priv->cur_cmd->cmdbuf->seqnum) {
lbs_pr_info("Received CMD_RESP with invalid sequence %d (expected %d)\n",
@@ -526,18 +526,13 @@ static int lbs_send_confirmwake(struct lbs_private *priv)
return ret;
}
-int lbs_process_event(struct lbs_private *priv)
+int lbs_process_event(struct lbs_private *priv, u32 event)
{
int ret = 0;
- u32 eventcause;
lbs_deb_enter(LBS_DEB_CMD);
- spin_lock_irq(&priv->driver_lock);
- eventcause = priv->eventcause >> SBI_EVENT_CAUSE_SHIFT;
- spin_unlock_irq(&priv->driver_lock);
-
- switch (eventcause) {
+ switch (event) {
case MACREG_INT_CODE_LINK_SENSED:
lbs_deb_cmd("EVENT: link sensed\n");
break;
@@ -653,14 +648,10 @@ int lbs_process_event(struct lbs_private *priv)
break;
default:
- lbs_pr_alert("EVENT: unknown event id %d\n", eventcause);
+ lbs_pr_alert("EVENT: unknown event id %d\n", event);
break;
}
- spin_lock_irq(&priv->driver_lock);
- priv->eventcause = 0;
- spin_unlock_irq(&priv->driver_lock);
-
lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
return ret;
}
diff --git a/drivers/net/wireless/libertas/debugfs.c b/drivers/net/wireless/libertas/debugfs.c
index 7072e26..ad2fabc 100644
--- a/drivers/net/wireless/libertas/debugfs.c
+++ b/drivers/net/wireless/libertas/debugfs.c
@@ -824,7 +824,6 @@ struct debug_data {
/* To debug any member of struct lbs_private, simply add one line here.
*/
static struct debug_data items[] = {
- {"intcounter", item_size(intcounter), item_addr(intcounter)},
{"psmode", item_size(psmode), item_addr(psmode)},
{"psstate", item_size(psstate), item_addr(psstate)},
};
diff --git a/drivers/net/wireless/libertas/decl.h b/drivers/net/wireless/libertas/decl.h
index cadc59d..491d693 100644
--- a/drivers/net/wireless/libertas/decl.h
+++ b/drivers/net/wireless/libertas/decl.h
@@ -19,7 +19,7 @@ struct cmd_ds_command;
void lbs_set_mac_control(struct lbs_private *priv);
-void lbs_send_tx_feedback(struct lbs_private *priv);
+void lbs_send_tx_feedback(struct lbs_private *priv, u32 try_count);
int lbs_free_cmd_buffer(struct lbs_private *priv);
@@ -30,8 +30,10 @@ int lbs_prepare_and_send_command(struct lbs_private *priv,
int lbs_allocate_cmd_buffer(struct lbs_private *priv);
int lbs_execute_next_command(struct lbs_private *priv);
-int lbs_process_event(struct lbs_private *priv);
-void lbs_interrupt(struct lbs_private *priv);
+int lbs_process_event(struct lbs_private *priv, u32 event);
+void lbs_queue_event(struct lbs_private *priv, u32 event);
+void lbs_notify_command_response(struct lbs_private *priv, u8 resp_idx);
+
int lbs_set_radio_control(struct lbs_private *priv);
u32 lbs_fw_index_to_data_rate(u8 index);
u8 lbs_data_rate_to_fw_index(u32 rate);
@@ -40,7 +42,7 @@ void lbs_get_fwversion(struct lbs_private *priv,
int maxlen);
/** The proc fs interface */
-int lbs_process_rx_command(struct lbs_private *priv);
+int lbs_process_command_response(struct lbs_private *priv, u8 *data, u32 len);
void lbs_complete_command(struct lbs_private *priv, struct cmd_ctrl_node *cmd,
int result);
int lbs_hard_start_xmit(struct sk_buff *skb, struct net_device *dev);
diff --git a/drivers/net/wireless/libertas/defs.h b/drivers/net/wireless/libertas/defs.h
index 84e8de5..d395201 100644
--- a/drivers/net/wireless/libertas/defs.h
+++ b/drivers/net/wireless/libertas/defs.h
@@ -177,8 +177,6 @@ static inline void lbs_deb_hex(unsigned int grp, const char *prompt, u8 *buf, in
#define MRVDRV_CMD_UPLD_RDY 0x0008
#define MRVDRV_CARDEVENT 0x0010
-#define SBI_EVENT_CAUSE_SHIFT 3
-
/** TxPD status */
/* Station firmware use TxPD status field to report final Tx transmit
diff --git a/drivers/net/wireless/libertas/dev.h b/drivers/net/wireless/libertas/dev.h
index 5b0c642..d62ac99 100644
--- a/drivers/net/wireless/libertas/dev.h
+++ b/drivers/net/wireless/libertas/dev.h
@@ -128,10 +128,6 @@ struct lbs_private {
u32 bbp_offset;
u32 rf_offset;
- /** Upload length */
- u32 upld_len;
- /* Upload buffer */
- u8 upld_buf[LBS_UPLD_SIZE];
/* Download sent:
bit0 1/0=data_sent/data_tx_done,
bit1 1/0=cmd_sent/cmd_tx_done,
@@ -154,21 +150,16 @@ struct lbs_private {
/** Hardware access */
int (*hw_host_to_card) (struct lbs_private *priv, u8 type, u8 *payload, u16 nb);
- int (*hw_get_int_status) (struct lbs_private *priv, u8 *);
- int (*hw_read_event_cause) (struct lbs_private *);
/* Wake On LAN */
uint32_t wol_criteria;
uint8_t wol_gpio;
uint8_t wol_gap;
- /* was struct lbs_adapter from here... */
-
/** Wlan adapter data structure*/
/** STATUS variables */
u32 fwrelease;
u32 fwcapinfo;
- /* protected with big lock */
struct mutex lock;
@@ -180,7 +171,6 @@ struct lbs_private {
/** command-related variables */
u16 seqnum;
- /* protected by big lock */
struct cmd_ctrl_node *cmd_array;
/** Current command */
@@ -193,12 +183,17 @@ struct lbs_private {
struct list_head cmdpendingq;
wait_queue_head_t cmd_pending;
- /* command related variables protected by priv->driver_lock */
- /** Async and Sync Event variables */
- u32 intcounter;
- u32 eventcause;
- u8 nodename[16]; /* nickname */
+ /* Command responses sent from the hardware to the driver */
+ u8 resp_idx;
+ u8 resp_buf[2][LBS_UPLD_SIZE];
+ u32 resp_len[2];
+
+ /* Events sent from hardware to driver */
+ struct kfifo *event_fifo;
+
+ /* nickname */
+ u8 nodename[16];
/** spin locks */
spinlock_t driver_lock;
@@ -208,8 +203,6 @@ struct lbs_private {
int nr_retries;
int cmd_timed_out;
- u8 hisregcpy;
-
/** current ssid/bssid related parameters*/
struct current_bss_params curbssparams;
diff --git a/drivers/net/wireless/libertas/if_cs.c b/drivers/net/wireless/libertas/if_cs.c
index 53afeba..5bd6cfe 100644
--- a/drivers/net/wireless/libertas/if_cs.c
+++ b/drivers/net/wireless/libertas/if_cs.c
@@ -83,14 +83,14 @@ static inline unsigned int if_cs_read8(struct if_cs_card *card, uint reg)
{
unsigned int val = ioread8(card->iobase + reg);
if (debug_output)
- printk(KERN_INFO "##inb %08x<%02x\n", reg, val);
+ printk(KERN_INFO "inb %08x<%02x\n", reg, val);
return val;
}
static inline unsigned int if_cs_read16(struct if_cs_card *card, uint reg)
{
unsigned int val = ioread16(card->iobase + reg);
if (debug_output)
- printk(KERN_INFO "##inw %08x<%04x\n", reg, val);
+ printk(KERN_INFO "inw %08x<%04x\n", reg, val);
return val;
}
static inline void if_cs_read16_rep(
@@ -100,7 +100,7 @@ static inline void if_cs_read16_rep(
unsigned long count)
{
if (debug_output)
- printk(KERN_INFO "##insw %08x<(0x%lx words)\n",
+ printk(KERN_INFO "insw %08x<(0x%lx words)\n",
reg, count);
ioread16_rep(card->iobase + reg, buf, count);
}
@@ -108,14 +108,14 @@ static inline void if_cs_read16_rep(
static inline void if_cs_write8(struct if_cs_card *card, uint reg, u8 val)
{
if (debug_output)
- printk(KERN_INFO "##outb %08x>%02x\n", reg, val);
+ printk(KERN_INFO "outb %08x>%02x\n", reg, val);
iowrite8(val, card->iobase + reg);
}
static inline void if_cs_write16(struct if_cs_card *card, uint reg, u16 val)
{
if (debug_output)
- printk(KERN_INFO "##outw %08x>%04x\n", reg, val);
+ printk(KERN_INFO "outw %08x>%04x\n", reg, val);
iowrite16(val, card->iobase + reg);
}
@@ -126,7 +126,7 @@ static inline void if_cs_write16_rep(
unsigned long count)
{
if (debug_output)
- printk(KERN_INFO "##outsw %08x>(0x%lx words)\n",
+ printk(KERN_INFO "outsw %08x>(0x%lx words)\n",
reg, count);
iowrite16_rep(card->iobase + reg, buf, count);
}
@@ -199,17 +199,6 @@ static int if_cs_poll_while_fw_download(struct if_cs_card *card, uint addr, u8 r
#define IF_CS_C_S_CARDEVENT 0x0010
#define IF_CS_C_S_MASK 0x001f
#define IF_CS_C_S_STATUS_MASK 0x7f00
-/* The following definitions should be the same as the MRVDRV_ ones */
-
-#if MRVDRV_CMD_DNLD_RDY != IF_CS_C_S_CMD_DNLD_RDY
-#error MRVDRV_CMD_DNLD_RDY and IF_CS_C_S_CMD_DNLD_RDY not in sync
-#endif
-#if MRVDRV_CMD_UPLD_RDY != IF_CS_C_S_CMD_UPLD_RDY
-#error MRVDRV_CMD_UPLD_RDY and IF_CS_C_S_CMD_UPLD_RDY not in sync
-#endif
-#if MRVDRV_CARDEVENT != IF_CS_C_S_CARDEVENT
-#error MRVDRV_CARDEVENT and IF_CS_C_S_CARDEVENT not in sync
-#endif
#define IF_CS_C_INT_CAUSE 0x00000022
#define IF_CS_C_IC_MASK 0x001f
@@ -226,55 +215,6 @@ static int if_cs_poll_while_fw_download(struct if_cs_card *card, uint addr, u8 r
/********************************************************************/
-/* Interrupts */
-/********************************************************************/
-
-static inline void if_cs_enable_ints(struct if_cs_card *card)
-{
- lbs_deb_enter(LBS_DEB_CS);
- if_cs_write16(card, IF_CS_H_INT_MASK, 0);
-}
-
-static inline void if_cs_disable_ints(struct if_cs_card *card)
-{
- lbs_deb_enter(LBS_DEB_CS);
- if_cs_write16(card, IF_CS_H_INT_MASK, IF_CS_H_IM_MASK);
-}
-
-static irqreturn_t if_cs_interrupt(int irq, void *data)
-{
- struct if_cs_card *card = data;
- u16 int_cause;
-
- lbs_deb_enter(LBS_DEB_CS);
-
- int_cause = if_cs_read16(card, IF_CS_C_INT_CAUSE);
- if (int_cause == 0x0) {
- /* Not for us */
- return IRQ_NONE;
-
- } else if (int_cause == 0xffff) {
- /* Read in junk, the card has probably been removed */
- card->priv->surpriseremoved = 1;
- return IRQ_HANDLED;
- } else {
- if (int_cause & IF_CS_H_IC_TX_OVER)
- lbs_host_to_card_done(card->priv);
-
- /* clear interrupt */
- if_cs_write16(card, IF_CS_C_INT_CAUSE, int_cause & IF_CS_C_IC_MASK);
- }
- spin_lock(&card->priv->driver_lock);
- lbs_interrupt(card->priv);
- spin_unlock(&card->priv->driver_lock);
-
- return IRQ_HANDLED;
-}
-
-
-
-
-/********************************************************************/
/* I/O */
/********************************************************************/
@@ -351,6 +291,7 @@ static void if_cs_send_data(struct lbs_private *priv, u8 *buf, u16 nb)
*/
static int if_cs_receive_cmdres(struct lbs_private *priv, u8 *data, u32 *len)
{
+ unsigned long flags;
int ret = -1;
u16 val;
@@ -378,6 +319,12 @@ static int if_cs_receive_cmdres(struct lbs_private *priv, u8 *data, u32 *len)
* bytes */
*len -= 8;
ret = 0;
+
+ /* Clear this flag again */
+ spin_lock_irqsave(&priv->driver_lock, flags);
+ priv->dnld_sent = DNLD_RES_RECEIVED;
+ spin_unlock_irqrestore(&priv->driver_lock, flags);
+
out:
lbs_deb_leave_args(LBS_DEB_CS, "ret %d, len %d", ret, *len);
return ret;
@@ -396,11 +343,9 @@ static struct sk_buff *if_cs_receive_data(struct lbs_private *priv)
if (len == 0 || len > MRVDRV_ETH_RX_PACKET_BUFFER_SIZE) {
lbs_pr_err("card data buffer has invalid # of bytes (%d)\n", len);
priv->stats.rx_dropped++;
- printk(KERN_INFO "##HS %s:%d TODO\n", __FUNCTION__, __LINE__);
goto dat_err;
}
- //TODO: skb = dev_alloc_skb(len+ETH_FRAME_LEN+MRVDRV_SNAP_HEADER_LEN+EXTRA_LEN);
skb = dev_alloc_skb(MRVDRV_ETH_RX_PACKET_BUFFER_SIZE + 2);
if (!skb)
goto out;
@@ -425,6 +370,91 @@ out:
/********************************************************************/
+/* Interrupts */
+/********************************************************************/
+
+static inline void if_cs_enable_ints(struct if_cs_card *card)
+{
+ lbs_deb_enter(LBS_DEB_CS);
+ if_cs_write16(card, IF_CS_H_INT_MASK, 0);
+}
+
+static inline void if_cs_disable_ints(struct if_cs_card *card)
+{
+ lbs_deb_enter(LBS_DEB_CS);
+ if_cs_write16(card, IF_CS_H_INT_MASK, IF_CS_H_IM_MASK);
+}
+
+
+static irqreturn_t if_cs_interrupt(int irq, void *data)
+{
+ struct if_cs_card *card = data;
+ struct lbs_private *priv = card->priv;
+ u16 card_int_cause;
+ u16 event;
+
+ lbs_deb_enter(LBS_DEB_CS);
+
+ card_int_cause = if_cs_read16(card, IF_CS_C_INT_CAUSE);
+ lbs_deb_cs("card_int_cause 0x%04x\n", card_int_cause);
+ if (card_int_cause == 0) {
+ /* Not for us */
+ return IRQ_NONE;
+
+ }
+ if (card_int_cause == 0xffff) {
+ /* Read in junk, the card has probably been removed */
+ card->priv->surpriseremoved = 1;
+ return IRQ_HANDLED;
+ }
+
+ /* TODO: I'm not sure what the best ordering is */
+
+ if (card_int_cause & IF_CS_H_STATUS_RX_OVER) {
+ struct sk_buff *skb;
+ lbs_deb_cs("rx packet\n");
+ skb = if_cs_receive_data(priv);
+ if (skb)
+ lbs_process_rxed_packet(priv, skb);
+ }
+
+ if (card_int_cause & IF_CS_H_IC_TX_OVER)
+ lbs_host_to_card_done(priv);
+
+ if (card_int_cause & IF_CS_C_S_CMD_UPLD_RDY) {
+ unsigned long flags;
+ u8 i;
+
+ lbs_deb_cs("cmd upload ready\n");
+ spin_lock_irqsave(&priv->driver_lock, flags);
+ i = (priv->resp_idx == 0) ? 1 : 0;
+ spin_unlock_irqrestore(&priv->driver_lock, flags);
+
+ BUG_ON(priv->resp_len[i]);
+ if_cs_receive_cmdres(priv, priv->resp_buf[i],
+ &priv->resp_len[i]);
+
+ spin_lock_irqsave(&priv->driver_lock, flags);
+ lbs_notify_command_response(priv, i);
+ spin_unlock_irqrestore(&priv->driver_lock, flags);
+ }
+
+ if (card_int_cause & IF_CS_H_IC_HOST_EVENT) {
+ event = if_cs_read16(priv->card, IF_CS_C_STATUS) & IF_CS_C_S_STATUS_MASK;
+ if_cs_write16(priv->card, IF_CS_H_INT_CAUSE, IF_CS_H_IC_HOST_EVENT);
+ lbs_deb_cs("eventcause 0x%04x\n", event);
+ lbs_queue_event(priv, (event >> 8 & 0xff));
+ }
+
+ if_cs_write16(card, IF_CS_C_INT_CAUSE, card_int_cause & IF_CS_C_IC_MASK);
+
+ return IRQ_HANDLED;
+}
+
+
+
+
+/********************************************************************/
/* Firmware */
/********************************************************************/
@@ -547,7 +577,7 @@ static int if_cs_prog_real(struct if_cs_card *card)
int i;
lbs_pr_err("helper firmware doesn't answer\n");
for (i = 0; i < 0x50; i += 2)
- printk(KERN_INFO "## HS %02x: %04x\n",
+ printk(KERN_INFO "##HS %02x: %04x\n",
i, if_cs_read16(card, i));
goto err_release;
}
@@ -642,64 +672,6 @@ static int if_cs_host_to_card(struct lbs_private *priv,
}
-static int if_cs_get_int_status(struct lbs_private *priv, u8 *ireg)
-{
- struct if_cs_card *card = (struct if_cs_card *)priv->card;
- int ret = 0;
- u16 int_cause;
- *ireg = 0;
-
- lbs_deb_enter(LBS_DEB_CS);
-
- if (priv->surpriseremoved)
- goto out;
-
- int_cause = if_cs_read16(card, IF_CS_C_INT_CAUSE) & IF_CS_C_IC_MASK;
- if_cs_write16(card, IF_CS_C_INT_CAUSE, int_cause);
-
- *ireg = if_cs_read16(card, IF_CS_C_STATUS) & IF_CS_C_S_MASK;
-
- if (!*ireg)
- goto sbi_get_int_status_exit;
-
-sbi_get_int_status_exit:
-
- /* is there a data packet for us? */
- if (*ireg & IF_CS_C_S_RX_UPLD_RDY) {
- struct sk_buff *skb = if_cs_receive_data(priv);
- lbs_process_rxed_packet(priv, skb);
- *ireg &= ~IF_CS_C_S_RX_UPLD_RDY;
- }
-
- if (*ireg & IF_CS_C_S_TX_DNLD_RDY) {
- priv->dnld_sent = DNLD_RES_RECEIVED;
- }
-
- /* Card has a command result for us */
- if (*ireg & IF_CS_C_S_CMD_UPLD_RDY) {
- ret = if_cs_receive_cmdres(priv, priv->upld_buf, &priv->upld_len);
- if (ret < 0)
- lbs_pr_err("could not receive cmd from card\n");
- }
-
-out:
- lbs_deb_leave_args(LBS_DEB_CS, "ret %d, ireg 0x%x, hisregcpy 0x%x", ret, *ireg, priv->hisregcpy);
- return ret;
-}
-
-
-static int if_cs_read_event_cause(struct lbs_private *priv)
-{
- lbs_deb_enter(LBS_DEB_CS);
-
- priv->eventcause = (if_cs_read16(priv->card, IF_CS_C_STATUS) & IF_CS_C_S_STATUS_MASK) >> 5;
- if_cs_write16(priv->card, IF_CS_H_INT_CAUSE, IF_CS_H_IC_HOST_EVENT);
-
- return 0;
-}
-
-
-
/********************************************************************/
/* Card Services */
/********************************************************************/
@@ -852,13 +824,10 @@ static int if_cs_probe(struct pcmcia_device *p_dev)
goto out2;
}
- /* Store pointers to our call-back functions */
+ /* Finish setting up fields in lbs_private */
card->priv = priv;
priv->card = card;
- priv->hw_host_to_card = if_cs_host_to_card;
- priv->hw_get_int_status = if_cs_get_int_status;
- priv->hw_read_event_cause = if_cs_read_event_cause;
-
+ priv->hw_host_to_card = if_cs_host_to_card;
priv->fw_ready = 1;
/* Now actually get the IRQ */
diff --git a/drivers/net/wireless/libertas/if_sdio.c b/drivers/net/wireless/libertas/if_sdio.c
index eed7320..51f664b 100644
--- a/drivers/net/wireless/libertas/if_sdio.c
+++ b/drivers/net/wireless/libertas/if_sdio.c
@@ -91,8 +91,6 @@ struct if_sdio_card {
const char *firmware;
u8 buffer[65536];
- u8 int_cause;
- u32 event;
spinlock_t lock;
struct if_sdio_packet *packets;
@@ -129,13 +127,13 @@ static u16 if_sdio_read_scratch(struct if_sdio_card *card, int *err)
static int if_sdio_handle_cmd(struct if_sdio_card *card,
u8 *buffer, unsigned size)
{
+ struct lbs_private *priv = card->priv;
int ret;
unsigned long flags;
+ u8 i;
lbs_deb_enter(LBS_DEB_SDIO);
- spin_lock_irqsave(&card->priv->driver_lock, flags);
-
if (size > LBS_CMD_BUFFER_SIZE) {
lbs_deb_sdio("response packet too large (%d bytes)\n",
(int)size);
@@ -143,20 +141,20 @@ static int if_sdio_handle_cmd(struct if_sdio_card *card,
goto out;
}
- memcpy(card->priv->upld_buf, buffer, size);
- card->priv->upld_len = size;
+ spin_lock_irqsave(&priv->driver_lock, flags);
- card->int_cause |= MRVDRV_CMD_UPLD_RDY;
+ i = (priv->resp_idx == 0) ? 1 : 0;
+ BUG_ON(priv->resp_len[i]);
+ priv->resp_len[i] = size;
+ memcpy(priv->resp_buf[i], buffer, size);
+ lbs_notify_command_response(priv, i);
- lbs_interrupt(card->priv);
+ spin_unlock_irqrestore(&card->priv->driver_lock, flags);
ret = 0;
out:
- spin_unlock_irqrestore(&card->priv->driver_lock, flags);
-
lbs_deb_leave_args(LBS_DEB_SDIO, "ret %d", ret);
-
return ret;
}
@@ -202,7 +200,6 @@ static int if_sdio_handle_event(struct if_sdio_card *card,
u8 *buffer, unsigned size)
{
int ret;
- unsigned long flags;
u32 event;
lbs_deb_enter(LBS_DEB_SDIO);
@@ -222,18 +219,9 @@ static int if_sdio_handle_event(struct if_sdio_card *card,
event |= buffer[2] << 16;
event |= buffer[1] << 8;
event |= buffer[0] << 0;
- event <<= SBI_EVENT_CAUSE_SHIFT;
}
- spin_lock_irqsave(&card->priv->driver_lock, flags);
-
- card->event = event;
- card->int_cause |= MRVDRV_CARDEVENT;
-
- lbs_interrupt(card->priv);
-
- spin_unlock_irqrestore(&card->priv->driver_lock, flags);
-
+ lbs_queue_event(card->priv, event & 0xFF);
ret = 0;
out:
@@ -770,37 +758,6 @@ out:
return ret;
}
-static int if_sdio_get_int_status(struct lbs_private *priv, u8 *ireg)
-{
- struct if_sdio_card *card;
-
- lbs_deb_enter(LBS_DEB_SDIO);
-
- card = priv->card;
-
- *ireg = card->int_cause;
- card->int_cause = 0;
-
- lbs_deb_leave(LBS_DEB_SDIO);
-
- return 0;
-}
-
-static int if_sdio_read_event_cause(struct lbs_private *priv)
-{
- struct if_sdio_card *card;
-
- lbs_deb_enter(LBS_DEB_SDIO);
-
- card = priv->card;
-
- priv->eventcause = card->event;
-
- lbs_deb_leave(LBS_DEB_SDIO);
-
- return 0;
-}
-
/*******************************************************************/
/* SDIO callbacks */
/*******************************************************************/
@@ -953,8 +910,6 @@ static int if_sdio_probe(struct sdio_func *func,
priv->card = card;
priv->hw_host_to_card = if_sdio_host_to_card;
- priv->hw_get_int_status = if_sdio_get_int_status;
- priv->hw_read_event_cause = if_sdio_read_event_cause;
priv->fw_ready = 1;
diff --git a/drivers/net/wireless/libertas/if_usb.c b/drivers/net/wireless/libertas/if_usb.c
index 75aed9d..66fcd8d 100644
--- a/drivers/net/wireless/libertas/if_usb.c
+++ b/drivers/net/wireless/libertas/if_usb.c
@@ -38,8 +38,6 @@ static void if_usb_receive_fwload(struct urb *urb);
static int if_usb_prog_firmware(struct if_usb_card *cardp);
static int if_usb_host_to_card(struct lbs_private *priv, uint8_t type,
uint8_t *payload, uint16_t nb);
-static int if_usb_get_int_status(struct lbs_private *priv, uint8_t *);
-static int if_usb_read_event_cause(struct lbs_private *);
static int usb_tx_block(struct if_usb_card *cardp, uint8_t *payload,
uint16_t nb);
static void if_usb_free(struct if_usb_card *cardp);
@@ -233,8 +231,6 @@ static int if_usb_probe(struct usb_interface *intf,
cardp->priv->fw_ready = 1;
priv->hw_host_to_card = if_usb_host_to_card;
- priv->hw_get_int_status = if_usb_get_int_status;
- priv->hw_read_event_cause = if_usb_read_event_cause;
cardp->boot2_version = udev->descriptor.bcdDevice;
if_usb_submit_rx_urb(cardp);
@@ -582,7 +578,6 @@ static inline void process_cmdtypedata(int recvlength, struct sk_buff *skb,
skb_pull(skb, MESSAGE_HEADER_LEN);
lbs_process_rxed_packet(priv, skb);
- priv->upld_len = (recvlength - MESSAGE_HEADER_LEN);
}
static inline void process_cmdrequest(int recvlength, uint8_t *recvbuff,
@@ -590,6 +585,8 @@ static inline void process_cmdrequest(int recvlength, uint8_t *recvbuff,
struct if_usb_card *cardp,
struct lbs_private *priv)
{
+ u8 i;
+
if (recvlength > LBS_CMD_BUFFER_SIZE) {
lbs_deb_usbd(&cardp->udev->dev,
"The receive buffer is too large\n");
@@ -601,12 +598,15 @@ static inline void process_cmdrequest(int recvlength, uint8_t *recvbuff,
BUG();
spin_lock(&priv->driver_lock);
- cardp->usb_int_cause |= MRVDRV_CMD_UPLD_RDY;
- priv->upld_len = (recvlength - MESSAGE_HEADER_LEN);
- memcpy(priv->upld_buf, recvbuff + MESSAGE_HEADER_LEN, priv->upld_len);
+ i = (priv->resp_idx == 0) ? 1 : 0;
+ BUG_ON(priv->resp_len[i]);
+ priv->resp_len[i] = (recvlength - MESSAGE_HEADER_LEN);
+ memcpy(priv->resp_buf[i], recvbuff + MESSAGE_HEADER_LEN,
+ priv->resp_len[i]);
kfree_skb(skb);
- lbs_interrupt(priv);
+ lbs_notify_command_response(priv, i);
+
spin_unlock(&priv->driver_lock);
lbs_deb_usbd(&cardp->udev->dev,
@@ -629,6 +629,7 @@ static void if_usb_receive(struct urb *urb)
uint8_t *recvbuff = NULL;
uint32_t recvtype = 0;
__le32 *pkt = (__le32 *)(skb->data + IPFIELD_ALIGN_OFFSET);
+ uint32_t event;
lbs_deb_enter(LBS_DEB_USB);
@@ -660,26 +661,20 @@ static void if_usb_receive(struct urb *urb)
break;
case CMD_TYPE_INDICATION:
- /* Event cause handling */
- spin_lock(&priv->driver_lock);
+ /* Event handling */
+ event = le32_to_cpu(pkt[1]);
+ lbs_deb_usbd(&cardp->udev->dev,"**EVENT** 0x%X\n", event);
+ kfree_skb(skb);
- cardp->usb_event_cause = le32_to_cpu(pkt[1]);
+ /* Icky undocumented magic special case */
+ if (event & 0xffff0000) {
+ u32 trycount = (event & 0xffff0000) >> 16;
- lbs_deb_usbd(&cardp->udev->dev,"**EVENT** 0x%X\n",
- cardp->usb_event_cause);
+ lbs_send_tx_feedback(priv, trycount);
+ } else
+ lbs_queue_event(priv, event & 0xFF);
+ break;
- /* Icky undocumented magic special case */
- if (cardp->usb_event_cause & 0xffff0000) {
- lbs_send_tx_feedback(priv);
- spin_unlock(&priv->driver_lock);
- break;
- }
- cardp->usb_event_cause <<= 3;
- cardp->usb_int_cause |= MRVDRV_CARDEVENT;
- kfree_skb(skb);
- lbs_interrupt(priv);
- spin_unlock(&priv->driver_lock);
- goto rx_exit;
default:
lbs_deb_usbd(&cardp->udev->dev, "Unknown command type 0x%X\n",
recvtype);
@@ -722,30 +717,6 @@ static int if_usb_host_to_card(struct lbs_private *priv, uint8_t type,
return usb_tx_block(cardp, cardp->ep_out_buf, nb + MESSAGE_HEADER_LEN);
}
-/* called with priv->driver_lock held */
-static int if_usb_get_int_status(struct lbs_private *priv, uint8_t *ireg)
-{
- struct if_usb_card *cardp = priv->card;
-
- *ireg = cardp->usb_int_cause;
- cardp->usb_int_cause = 0;
-
- lbs_deb_usbd(&cardp->udev->dev, "Int cause is 0x%X\n", *ireg);
-
- return 0;
-}
-
-static int if_usb_read_event_cause(struct lbs_private *priv)
-{
- struct if_usb_card *cardp = priv->card;
-
- priv->eventcause = cardp->usb_event_cause;
- /* Re-submit rx urb here to avoid event lost issue */
- if_usb_submit_rx_urb(cardp);
-
- return 0;
-}
-
/**
* @brief This function issues Boot command to the Boot2 code
* @param ivalue 1:Boot from FW by USB-Download
diff --git a/drivers/net/wireless/libertas/if_usb.h b/drivers/net/wireless/libertas/if_usb.h
index e4829a3..5771a83 100644
--- a/drivers/net/wireless/libertas/if_usb.h
+++ b/drivers/net/wireless/libertas/if_usb.h
@@ -46,8 +46,6 @@ struct if_usb_card {
struct lbs_private *priv;
struct sk_buff *rx_skb;
- uint32_t usb_event_cause;
- uint8_t usb_int_cause;
uint8_t ep_in;
uint8_t ep_out;
diff --git a/drivers/net/wireless/libertas/main.c b/drivers/net/wireless/libertas/main.c
index 34c63e3..0289e1d 100644
--- a/drivers/net/wireless/libertas/main.c
+++ b/drivers/net/wireless/libertas/main.c
@@ -10,6 +10,7 @@
#include <linux/netdevice.h>
#include <linux/if_arp.h>
#include <linux/kthread.h>
+#include <linux/kfifo.h>
#include <net/iw_handler.h>
#include <net/ieee80211.h>
@@ -480,10 +481,9 @@ static void lbs_tx_timeout(struct net_device *dev)
dev->trans_start = jiffies;
- if (priv->currenttxskb) {
- priv->eventcause = 0x01000000;
- lbs_send_tx_feedback(priv);
- }
+ if (priv->currenttxskb)
+ lbs_send_tx_feedback(priv, 0);
+
/* XX: Shouldn't we also call into the hw-specific driver
to kick it somehow? */
lbs_host_to_card_done(priv);
@@ -658,7 +658,6 @@ static int lbs_thread(void *data)
struct net_device *dev = data;
struct lbs_private *priv = dev->priv;
wait_queue_t wait;
- u8 ireg = 0;
lbs_deb_enter(LBS_DEB_THREAD);
@@ -666,9 +665,10 @@ static int lbs_thread(void *data)
for (;;) {
int shouldsleep;
+ u8 resp_idx;
- lbs_deb_thread( "main-thread 111: intcounter=%d currenttxskb=%p dnld_sent=%d\n",
- priv->intcounter, priv->currenttxskb, priv->dnld_sent);
+ lbs_deb_thread( "1: currenttxskb %p, dnld_sent %d\n",
+ priv->currenttxskb, priv->dnld_sent);
add_wait_queue(&priv->waitq, &wait);
set_current_state(TASK_INTERRUPTIBLE);
@@ -680,8 +680,6 @@ static int lbs_thread(void *data)
shouldsleep = 1; /* We need to wait until we're _told_ to die */
else if (priv->psstate == PS_STATE_SLEEP)
shouldsleep = 1; /* Sleep mode. Nothing we can do till it wakes */
- else if (priv->intcounter)
- shouldsleep = 0; /* Interrupt pending. Deal with it now */
else if (priv->cmd_timed_out)
shouldsleep = 0; /* Command timed out. Recover */
else if (!priv->fw_ready)
@@ -694,29 +692,33 @@ static int lbs_thread(void *data)
shouldsleep = 1; /* Can't send a command; one already running */
else if (!list_empty(&priv->cmdpendingq))
shouldsleep = 0; /* We have a command to send */
+ else if (__kfifo_len(priv->event_fifo))
+ shouldsleep = 0; /* We have an event to process */
+ else if (priv->resp_len[priv->resp_idx])
+ shouldsleep = 0; /* We have a command response */
else
shouldsleep = 1; /* No command */
if (shouldsleep) {
- lbs_deb_thread("main-thread sleeping... Conn=%d IntC=%d PS_mode=%d PS_State=%d\n",
- priv->connect_status, priv->intcounter,
- priv->psmode, priv->psstate);
+ lbs_deb_thread("sleeping, connect_status %d, ps_mode %d, "
+ "ps_state %d\n", priv->connect_status,
+ priv->psmode, priv->psstate);
spin_unlock_irq(&priv->driver_lock);
schedule();
} else
spin_unlock_irq(&priv->driver_lock);
- lbs_deb_thread("main-thread 222 (waking up): intcounter=%d currenttxskb=%p dnld_sent=%d\n",
- priv->intcounter, priv->currenttxskb, priv->dnld_sent);
+ lbs_deb_thread("2: currenttxskb %p, dnld_send %d\n",
+ priv->currenttxskb, priv->dnld_sent);
set_current_state(TASK_RUNNING);
remove_wait_queue(&priv->waitq, &wait);
- lbs_deb_thread("main-thread 333: intcounter=%d currenttxskb=%p dnld_sent=%d\n",
- priv->intcounter, priv->currenttxskb, priv->dnld_sent);
+ lbs_deb_thread("3: currenttxskb %p, dnld_sent %d\n",
+ priv->currenttxskb, priv->dnld_sent);
if (kthread_should_stop()) {
- lbs_deb_thread("main-thread: break from main thread\n");
+ lbs_deb_thread("break from main thread\n");
break;
}
@@ -725,35 +727,23 @@ static int lbs_thread(void *data)
continue;
}
- spin_lock_irq(&priv->driver_lock);
-
- if (priv->intcounter) {
- u8 int_status;
+ lbs_deb_thread("4: currenttxskb %p, dnld_sent %d\n",
+ priv->currenttxskb, priv->dnld_sent);
- priv->intcounter = 0;
- int_status = priv->hw_get_int_status(priv, &ireg);
-
- if (int_status) {
- lbs_deb_thread("main-thread: reading HOST_INT_STATUS_REG failed\n");
- spin_unlock_irq(&priv->driver_lock);
- continue;
- }
- priv->hisregcpy |= ireg;
- }
-
- lbs_deb_thread("main-thread 444: intcounter=%d currenttxskb=%p dnld_sent=%d\n",
- priv->intcounter, priv->currenttxskb, priv->dnld_sent);
-
- /* command response? */
- if (priv->hisregcpy & MRVDRV_CMD_UPLD_RDY) {
- lbs_deb_thread("main-thread: cmd response ready\n");
-
- priv->hisregcpy &= ~MRVDRV_CMD_UPLD_RDY;
+ spin_lock_irq(&priv->driver_lock);
+ /* Process any pending command response */
+ resp_idx = priv->resp_idx;
+ if (priv->resp_len[resp_idx]) {
spin_unlock_irq(&priv->driver_lock);
- lbs_process_rx_command(priv);
+ lbs_process_command_response(priv,
+ priv->resp_buf[resp_idx],
+ priv->resp_len[resp_idx]);
spin_lock_irq(&priv->driver_lock);
+ priv->resp_len[resp_idx] = 0;
}
+ spin_unlock_irq(&priv->driver_lock);
+ /* command timeout stuff */
if (priv->cmd_timed_out && priv->cur_cmd) {
struct cmd_ctrl_node *cmdnode = priv->cur_cmd;
@@ -774,21 +764,18 @@ static int lbs_thread(void *data)
}
priv->cmd_timed_out = 0;
- /* Any Card Event */
- if (priv->hisregcpy & MRVDRV_CARDEVENT) {
- lbs_deb_thread("main-thread: Card Event Activity\n");
-
- priv->hisregcpy &= ~MRVDRV_CARDEVENT;
+ /* Process hardware events, e.g. card removed, link lost */
+ spin_lock_irq(&priv->driver_lock);
+ while (__kfifo_len(priv->event_fifo)) {
+ u32 event;
- if (priv->hw_read_event_cause(priv)) {
- lbs_pr_alert("main-thread: hw_read_event_cause failed\n");
- spin_unlock_irq(&priv->driver_lock);
- continue;
- }
- spin_unlock_irq(&priv->driver_lock);
- lbs_process_event(priv);
- } else
+ __kfifo_get(priv->event_fifo, (unsigned char *) &event,
+ sizeof (event));
spin_unlock_irq(&priv->driver_lock);
+ lbs_process_event(priv, event);
+ spin_lock_irq(&priv->driver_lock);
+ }
+ spin_unlock_irq(&priv->driver_lock);
if (!priv->fw_ready)
continue;
@@ -797,8 +784,8 @@ static int lbs_thread(void *data)
if (priv->psstate == PS_STATE_PRE_SLEEP &&
!priv->dnld_sent && !priv->cur_cmd) {
if (priv->connect_status == LBS_CONNECTED) {
- lbs_deb_thread("main_thread: PRE_SLEEP--intcounter=%d currenttxskb=%p dnld_sent=%d cur_cmd=%p, confirm now\n",
- priv->intcounter, priv->currenttxskb, priv->dnld_sent, priv->cur_cmd);
+ lbs_deb_thread("main_thread: PRE_SLEEP--currenttxskb=%p dnld_sent=%d cur_cmd=%p, confirm now\n",
+ priv->currenttxskb, priv->dnld_sent, priv->cur_cmd);
lbs_ps_confirm_sleep(priv);
} else {
@@ -808,7 +795,7 @@ static int lbs_thread(void *data)
* after firmware fixes it
*/
priv->psstate = PS_STATE_AWAKE;
- lbs_pr_alert("main-thread: ignore PS_SleepConfirm in non-connected state\n");
+ lbs_pr_alert("ignore PS_SleepConfirm in non-connected state\n");
}
}
@@ -1044,7 +1031,18 @@ static int lbs_init_adapter(struct lbs_private *priv)
/* Allocate the command buffers */
if (lbs_allocate_cmd_buffer(priv)) {
lbs_pr_err("Out of memory allocating command buffers\n");
- ret = -1;
+ ret = -ENOMEM;
+ goto out;
+ }
+ priv->resp_idx = 0;
+ priv->resp_len[0] = priv->resp_len[1] = 0;
+
+ /* Create the event FIFO */
+ priv->event_fifo = kfifo_alloc(sizeof (u32) * 16, GFP_KERNEL, NULL);
+ if (IS_ERR(priv->event_fifo)) {
+ lbs_pr_err("Out of memory allocating event FIFO buffer\n");
+ ret = -ENOMEM;
+ goto out;
}
out:
@@ -1058,6 +1056,8 @@ static void lbs_free_adapter(struct lbs_private *priv)
lbs_deb_enter(LBS_DEB_MAIN);
lbs_free_cmd_buffer(priv);
+ if (priv->event_fifo)
+ kfifo_free(priv->event_fifo);
del_timer(&priv->command_timer);
kfree(priv->networks);
priv->networks = NULL;
@@ -1432,27 +1432,41 @@ out:
return ret;
}
-/**
- * @brief This function handles the interrupt. it will change PS
- * state if applicable. it will wake up main_thread to handle
- * the interrupt event as well.
- *
- * @param dev A pointer to net_device structure
- * @return n/a
- */
-void lbs_interrupt(struct lbs_private *priv)
+void lbs_queue_event(struct lbs_private *priv, u32 event)
+{
+ unsigned long flags;
+
+ lbs_deb_enter(LBS_DEB_THREAD);
+ spin_lock_irqsave(&priv->driver_lock, flags);
+
+ if (priv->psstate == PS_STATE_SLEEP)
+ priv->psstate = PS_STATE_AWAKE;
+
+ __kfifo_put(priv->event_fifo, (unsigned char *) &event, sizeof (u32));
+
+ wake_up_interruptible(&priv->waitq);
+
+ spin_unlock_irqrestore(&priv->driver_lock, flags);
+ lbs_deb_leave(LBS_DEB_THREAD);
+}
+EXPORT_SYMBOL_GPL(lbs_queue_event);
+
+void lbs_notify_command_response(struct lbs_private *priv, u8 resp_idx)
{
lbs_deb_enter(LBS_DEB_THREAD);
- lbs_deb_thread("lbs_interrupt: intcounter=%d\n", priv->intcounter);
- priv->intcounter++;
if (priv->psstate == PS_STATE_SLEEP)
priv->psstate = PS_STATE_AWAKE;
+
+ /* Swap buffers by flipping the response index */
+ BUG_ON(resp_idx > 1);
+ priv->resp_idx = resp_idx;
+
wake_up_interruptible(&priv->waitq);
lbs_deb_leave(LBS_DEB_THREAD);
}
-EXPORT_SYMBOL_GPL(lbs_interrupt);
+EXPORT_SYMBOL_GPL(lbs_notify_command_response);
static int __init lbs_init_module(void)
{
diff --git a/drivers/net/wireless/libertas/rx.c b/drivers/net/wireless/libertas/rx.c
index fc40e55..d4cc000 100644
--- a/drivers/net/wireless/libertas/rx.c
+++ b/drivers/net/wireless/libertas/rx.c
@@ -52,14 +52,14 @@ int lbs_process_rxed_packet(struct lbs_private *priv, struct sk_buff *skb)
struct net_device *dev = priv->dev;
struct rxpackethdr *p_rx_pkt;
struct rxpd *p_rx_pd;
-
int hdrchop;
struct ethhdr *p_ethhdr;
-
const u8 rfc1042_eth_hdr[] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
lbs_deb_enter(LBS_DEB_RX);
+ BUG_ON (!skb);
+
skb->ip_summed = CHECKSUM_NONE;
if (priv->monitormode)
diff --git a/drivers/net/wireless/libertas/tx.c b/drivers/net/wireless/libertas/tx.c
index 77f1f95..a4972fe 100644
--- a/drivers/net/wireless/libertas/tx.c
+++ b/drivers/net/wireless/libertas/tx.c
@@ -179,31 +179,17 @@ int lbs_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
*
* @returns void
*/
-void lbs_send_tx_feedback(struct lbs_private *priv)
+void lbs_send_tx_feedback(struct lbs_private *priv, u32 try_count)
{
struct tx_radiotap_hdr *radiotap_hdr;
- u32 status = priv->eventcause;
- int txfail;
- int try_count;
if (!priv->monitormode || priv->currenttxskb == NULL)
return;
radiotap_hdr = (struct tx_radiotap_hdr *)priv->currenttxskb->data;
- txfail = (status >> 24);
-
-#if 0
- /* The version of roofnet that we've tested does not use this yet
- * But it may be used in the future.
- */
- if (txfail)
- radiotap_hdr->flags &= IEEE80211_RADIOTAP_F_TX_FAIL;
-#endif
- try_count = (status >> 16) & 0xff;
- radiotap_hdr->data_retries = (try_count) ?
- (1 + priv->txretrycount - try_count) : 0;
-
+ radiotap_hdr->data_retries = try_count ?
+ (1 + priv->txretrycount - try_count) : 0;
priv->currenttxskb->protocol = eth_type_trans(priv->currenttxskb,
priv->rtap_net_dev);
--
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