Michael,
I couldn't find any long/short indication in the header, so I added a bool that
is set when the frame is sent.
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->last_frame_long) {
+ if (status->frame_count >=
+ dev->long_retry_limit)
+ meta->txstat.excessive_retries = 1;
+ } else {
+ if (status->frame_count >=
+ dev->short_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 +707,9 @@ 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 */
+ bool last_frame_long; /* true is last frame was long */
+ 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,
Index: wireless-dev/drivers/net/wireless/bcm43xx-mac80211/bcm43xx_xmit.c
===================================================================
--- wireless-dev.orig/drivers/net/wireless/bcm43xx-mac80211/bcm43xx_xmit.c
+++ wireless-dev/drivers/net/wireless/bcm43xx-mac80211/bcm43xx_xmit.c
@@ -264,6 +264,7 @@ static void generate_txhdr_fw4(struct bc
* is a 5Ghz packet.
*/
txhdr->chan_radio_code = phy->channel;
+ dev->last_frame_long = 0;
/* PHY TX Control word */
if (rate_ofdm)
@@ -336,6 +337,7 @@ static void generate_txhdr_fw4(struct bc
if (rts_rate_fb_ofdm)
extra_ft |= BCM43xx_TX4_EFT_RTSFBOFDM;
mac_ctl |= BCM43xx_TX4_MAC_LONGFRAME;
+ dev->last_frame_long = 1;
}
/* Magic cookie */
-
To unsubscribe from this list: send the line "unsubscribe linux-wireless" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
