Michael,
I think I took care of your comments in the previous version.
Larry
---
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 <Larry.Finger@xxxxxxxxxxxx>
---
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 +1311,16 @@ void bcm43xx_dma_handle_txstatus(struct
*/
if (status->acked)
meta->txstat.flags |= IEEE80211_TX_STATUS_ACK;
+ else
+ if (dev->short_preamble) {
+ if (status->frame_count >=
+ dev->short_retry_limit)
+ meta->txstat.excessive_retries = 1;
+ } else {
+ if (status->frame_count >=
+ dev->long_retry_limit)
+ 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.h
===================================================================
--- wireless-dev.orig/drivers/net/wireless/bcm43xx-mac80211/bcm43xx.h
+++ wireless-dev/drivers/net/wireless/bcm43xx-mac80211/bcm43xx.h
@@ -707,6 +707,8 @@ struct bcm43xx_wldev {
bool short_preamble; /* TRUE, if short preamble is enabled. */
bool short_slot; /* TRUE, if short slot timing is enabled. */
bool radio_hw_enable; /* saved state of radio hardware enabled state */
+ u8 short_retry_limit;
+ u8 long_retry_limit;
/* PHY/Radio device. */
struct bcm43xx_phy phy;
Index: wireless-dev/drivers/net/wireless/bcm43xx-mac80211/bcm43xx_main.c
===================================================================
--- wireless-dev.orig/drivers/net/wireless/bcm43xx-mac80211/bcm43xx_main.c
+++ wireless-dev/drivers/net/wireless/bcm43xx-mac80211/bcm43xx_main.c
@@ -3333,10 +3333,12 @@ static int bcm43xx_wireless_core_init(st
tmp = limit_value(modparam_short_retry, 0, 0xF);
bcm43xx_shm_write16(dev, BCM43xx_SHM_SCRATCH,
BCM43xx_SHM_SC_SRLIMIT, tmp);
+ dev->short_retry_limit = tmp;
tmp = limit_value(modparam_long_retry, 0, 0xF);
bcm43xx_shm_write16(dev, BCM43xx_SHM_SCRATCH,
BCM43xx_SHM_SC_LRLIMIT, tmp);
+ dev->long_retry_limit = tmp;
bcm43xx_shm_write16(dev, BCM43xx_SHM_SHARED,
BCM43xx_SHM_SH_SFFBLIM, 3);
bcm43xx_shm_write16(dev, BCM43xx_SHM_SHARED,
-
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