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]>
---
John and Michael,
This is based on the wireless-dev tree.
Larry
bcm43xx_dma.c | 3 +++
1 file changed, 3 insertions(+)
Index: wireless-dev/drivers/net/wireless/bcm43xx-mac80211/bcm43xx_dma.c
===================================================================
--- wireless-dev.orig/drivers/net/wireless/bcm43xx-mac80211/bcm43xx_dma.c
+++ wireless-dev/drivers/net/wireless/bcm43xx-mac80211/bcm43xx_dma.c
@@ -1311,6 +1311,9 @@ void bcm43xx_dma_handle_txstatus(struct
*/
if (status->acked)
meta->txstat.flags |= IEEE80211_TX_STATUS_ACK;
+ else
+ if (!(meta->txstat.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() */
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