From: Larry Finger <[EMAIL PROTECTED]>
Fixed-by: Michael Buesch <[EMAIL PROTECTED]>
In bcm43xx-mac80211, the mechanism for decreasing the transmit rate cannot
be triggered. This may be shown by walking away from the AP with a laptop.
At some distance, communications will be lost and never recovered because
the rate decreasing mechanism of rc80211_simple needs to see excessive_retries
set in the ieee80211_tx_status struct. With this patch, the transmit rate
will decrease until communications restart.
Signed-off-by: Larry Finger <[EMAIL PROTECTED]>
Signed-off-by: Michael Buesch <[EMAIL PROTECTED]>
Index: wireless-dev/drivers/net/wireless/bcm43xx-mac80211/bcm43xx_dma.c
===================================================================
--- wireless-dev.orig/drivers/net/wireless/bcm43xx-mac80211/bcm43xx_dma.c
2007-08-02 23:31:33.000000000 +0200
+++ wireless-dev/drivers/net/wireless/bcm43xx-mac80211/bcm43xx_dma.c
2007-08-02 23:39:35.000000000 +0200
@@ -1309,8 +1309,12 @@ void bcm43xx_dma_handle_txstatus(struct
* status of the transmission.
* Some fields of txstat are already filled in dma_tx().
*/
- if (status->acked)
+ if (status->acked) {
meta->txstat.flags |= IEEE80211_TX_STATUS_ACK;
+ } else {
+ if (!(meta->txstat.control.flags &
IEEE80211_TXCTL_NO_ACK))
+ meta->txstat.excessive_retries = 1;
+ }
meta->txstat.retry_count = status->frame_count - 1;
ieee80211_tx_status_irqsafe(dev->wl->hw, meta->skb,
&(meta->txstat));
/* skb is freed by ieee80211_tx_status_irqsafe() */
Index: wireless-dev/drivers/net/wireless/bcm43xx-mac80211/bcm43xx_pio.c
===================================================================
--- wireless-dev.orig/drivers/net/wireless/bcm43xx-mac80211/bcm43xx_pio.c
2007-08-02 16:47:33.000000000 +0200
+++ wireless-dev/drivers/net/wireless/bcm43xx-mac80211/bcm43xx_pio.c
2007-08-02 23:39:56.000000000 +0200
@@ -487,8 +487,12 @@ void bcm43xx_pio_handle_txstatus(struct
queue->tx_devq_packets--;
queue->tx_devq_used -= (packet->skb->len + sizeof(struct
bcm43xx_txhdr_fw4));
- if (status->acked)
+ if (status->acked) {
packet->txstat.flags |= IEEE80211_TX_STATUS_ACK;
+ } else {
+ if (!(packet->txstat.control.flags & IEEE80211_TXCTL_NO_ACK))
+ packet->txstat.excessive_retries = 1;
+ }
packet->txstat.retry_count = status->frame_count - 1;
ieee80211_tx_status_irqsafe(dev->wl->hw, packet->skb,
&(packet->txstat));
--
_______________________________________________
Bcm43xx-dev mailing list
Bcm43xx-dev@lists.berlios.de
https://lists.berlios.de/mailman/listinfo/bcm43xx-dev
