stagingL vt6656: implement fall back rates reporting.
The driver reports the rate tried in struct vnt_interrupt_data tsr* variables
which is available in INTnsProcessData via interrupt urb context.
Instead of closing apTD tx context in s_nsBulkOutIoCompleteWrite by setting
in_use to false. Keep the context open and allow vnt_int_report_rate to
close it.
If the tx_retry value is correct it will report back the sucessful RATE tried.
struct vnt_usb_send_context add pkt_no which is index of apTD
Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/staging/vt6656/device.h b/drivers/staging/vt6656/device.h
index 4d1eb22..789c55d 100644
--- a/drivers/staging/vt6656/device.h
+++ b/drivers/staging/vt6656/device.h
@@ -246,6 +246,8 @@
unsigned int buf_len;
u16 tx_hdr_size;
u8 type;
+ u8 pkt_no;
+ u8 fb_option;
bool in_use;
unsigned char data[MAX_TOTAL_SIZE_WITH_ALL_HEADERS];
};
diff --git a/drivers/staging/vt6656/int.c b/drivers/staging/vt6656/int.c
index 1913b73..1cc9364 100644
--- a/drivers/staging/vt6656/int.c
+++ b/drivers/staging/vt6656/int.c
@@ -39,6 +39,22 @@
static int msglevel = MSG_LEVEL_INFO; /* MSG_LEVEL_DEBUG */
+static const u8 fallback_rate0[5][5] = {
+ {RATE_18M, RATE_18M, RATE_12M, RATE_12M, RATE_12M},
+ {RATE_24M, RATE_24M, RATE_18M, RATE_12M, RATE_12M},
+ {RATE_36M, RATE_36M, RATE_24M, RATE_18M, RATE_18M},
+ {RATE_48M, RATE_48M, RATE_36M, RATE_24M, RATE_24M},
+ {RATE_54M, RATE_54M, RATE_48M, RATE_36M, RATE_36M}
+};
+
+static const u8 fallback_rate1[5][5] = {
+ {RATE_18M, RATE_18M, RATE_12M, RATE_6M, RATE_6M},
+ {RATE_24M, RATE_24M, RATE_18M, RATE_6M, RATE_6M},
+ {RATE_36M, RATE_36M, RATE_24M, RATE_12M, RATE_12M},
+ {RATE_48M, RATE_48M, RATE_24M, RATE_12M, RATE_12M},
+ {RATE_54M, RATE_54M, RATE_36M, RATE_18M, RATE_18M}
+};
+
/*+
*
* Function: InterruptPollingThread
@@ -75,6 +91,62 @@
spin_unlock_irqrestore(&pDevice->lock, flags);
}
+static int vnt_int_report_rate(struct vnt_private *priv, u8 pkt_no, u8 tsr)
+{
+ struct vnt_usb_send_context *context;
+ struct ieee80211_tx_info *info;
+ struct ieee80211_rate *rate;
+ u8 tx_retry = (tsr & 0xf0) >> 4;
+ s8 idx;
+
+ if (pkt_no >= priv->cbTD)
+ return -EINVAL;
+
+ context = priv->apTD[pkt_no];
+
+ if (!context->skb)
+ return -EINVAL;
+
+ info = IEEE80211_SKB_CB(context->skb);
+ idx = info->control.rates[0].idx;
+
+ if (context->fb_option && !(tsr & (TSR_TMO | TSR_RETRYTMO))) {
+ u8 tx_rate;
+ u8 retry = tx_retry;
+
+ rate = ieee80211_get_tx_rate(priv->hw, info);
+ tx_rate = rate->hw_value - RATE_18M;
+
+ if (retry > 4)
+ retry = 4;
+
+ if (context->fb_option == AUTO_FB_0)
+ tx_rate = fallback_rate0[tx_rate][retry];
+ else if (context->fb_option == AUTO_FB_1)
+ tx_rate = fallback_rate1[tx_rate][retry];
+
+ if (info->band == IEEE80211_BAND_5GHZ)
+ idx = tx_rate - RATE_6M;
+ else
+ idx = tx_rate;
+ }
+
+ ieee80211_tx_info_clear_status(info);
+
+ info->status.rates[0].count = tx_retry;
+
+ if (!(tsr & (TSR_TMO | TSR_RETRYTMO))) {
+ info->status.rates[0].idx = idx;
+ info->flags |= IEEE80211_TX_STAT_ACK;
+ }
+
+ ieee80211_tx_status_irqsafe(priv->hw, context->skb);
+
+ context->in_use = false;
+
+ return 0;
+}
+
void INTnsProcessData(struct vnt_private *priv)
{
struct vnt_interrupt_data *int_data;
@@ -85,33 +157,17 @@
int_data = (struct vnt_interrupt_data *)priv->int_buf.data_buf;
- if (int_data->tsr0 & TSR_VALID) {
- if (int_data->tsr0 & (TSR_TMO | TSR_RETRYTMO))
- priv->wstats.discard.retries++;
- else
- stats->tx_packets++;
- }
+ if (int_data->tsr0 & TSR_VALID)
+ vnt_int_report_rate(priv, int_data->pkt0, int_data->tsr0);
- if (int_data->tsr1 & TSR_VALID) {
- if (int_data->tsr1 & (TSR_TMO | TSR_RETRYTMO))
- priv->wstats.discard.retries++;
- else
- stats->tx_packets++;
- }
+ if (int_data->tsr1 & TSR_VALID)
+ vnt_int_report_rate(priv, int_data->pkt1, int_data->tsr1);
- if (int_data->tsr2 & TSR_VALID) {
- if (int_data->tsr2 & (TSR_TMO | TSR_RETRYTMO))
- priv->wstats.discard.retries++;
- else
- stats->tx_packets++;
- }
+ if (int_data->tsr2 & TSR_VALID)
+ vnt_int_report_rate(priv, int_data->pkt2, int_data->tsr2);
- if (int_data->tsr3 & TSR_VALID) {
- if (int_data->tsr3 & (TSR_TMO | TSR_RETRYTMO))
- priv->wstats.discard.retries++;
- else
- stats->tx_packets++;
- }
+ if (int_data->tsr3 & TSR_VALID)
+ vnt_int_report_rate(priv, int_data->pkt3, int_data->tsr3);
if (int_data->isr0 != 0) {
if (int_data->isr0 & ISR_BNTX &&
diff --git a/drivers/staging/vt6656/main_usb.c b/drivers/staging/vt6656/main_usb.c
index 9d0441f..4cdf29e 100644
--- a/drivers/staging/vt6656/main_usb.c
+++ b/drivers/staging/vt6656/main_usb.c
@@ -557,6 +557,7 @@
priv->apTD[ii] = tx_context;
tx_context->priv = priv;
+ tx_context->pkt_no = ii;
/* allocate URBs */
tx_context->urb = usb_alloc_urb(0, GFP_ATOMIC);
diff --git a/drivers/staging/vt6656/rxtx.c b/drivers/staging/vt6656/rxtx.c
index 95b6cf3..264e3c9 100644
--- a/drivers/staging/vt6656/rxtx.c
+++ b/drivers/staging/vt6656/rxtx.c
@@ -1021,6 +1021,8 @@
}
}
+ tx_context->fb_option = fb_option;
+
duration_id = s_vGenerateTxParameter(tx_context, pkt_type, current_rate,
tx_buffer, &mic_hdr, need_mic, frame_size,
need_ack, NULL, need_rts);
@@ -1050,8 +1052,7 @@
IEEE80211_SCTL_SEQ) >> 4;
tx_buffer->tx_byte_count = cpu_to_le16(tx_bytes);
- tx_buffer->byPKTNO = (u8)(((current_rate << 4) & 0xf0) |
- (priv->wSeqCounter & 0xf));
+ tx_buffer->byPKTNO = tx_context->pkt_no;
tx_buffer->byType = 0x00;
tx_bytes += 4;
@@ -1147,8 +1148,7 @@
count = sizeof(struct vnt_tx_short_buf_head) + skb->len;
beacon_buffer->tx_byte_count = cpu_to_le16(count);
- beacon_buffer->byPKTNO = (u8)(((current_rate << 4) & 0xf0) |
- ((priv->wSeqCounter - 1) & 0x000f));
+ beacon_buffer->byPKTNO = context->pkt_no;
beacon_buffer->byType = 0x01;
context->type = CONTEXT_BEACON_PACKET;
diff --git a/drivers/staging/vt6656/usbpipe.c b/drivers/staging/vt6656/usbpipe.c
index a7af4f5..c8b0ed5 100644
--- a/drivers/staging/vt6656/usbpipe.c
+++ b/drivers/staging/vt6656/usbpipe.c
@@ -398,7 +398,6 @@
{
struct vnt_usb_send_context *context = urb->context;
struct vnt_private *priv = context->priv;
- struct ieee80211_tx_info *info;
switch (urb->status) {
case 0:
@@ -415,25 +414,15 @@
break;
}
- if (context->skb) {
- s8 idx;
-
- info = IEEE80211_SKB_CB(context->skb);
-
- idx = info->control.rates[0].idx;
-
- ieee80211_tx_info_clear_status(info);
- info->status.rates[0].idx = idx;
- info->status.rates[0].count = 0;
- if (!urb->status)
- info->flags |= IEEE80211_TX_STAT_ACK;
- ieee80211_tx_status_irqsafe(priv->hw, context->skb);
- }
-
if (context->type == CONTEXT_DATA_PACKET)
ieee80211_wake_queues(priv->hw);
- context->in_use = false;
+ if (urb->status || context->type == CONTEXT_BEACON_PACKET) {
+ if (context->skb)
+ ieee80211_free_txskb(priv->hw, context->skb);
+
+ context->in_use = false;
+ }
return;
}