On Wednesday 20 May 2009 23:09:47 matthieu castet wrote:
> I see also some period were the AP seem to drop all packet.
> I am wondering if it can be due to slow recalibration.
> Do you now how much take calibration were mac is down ?
I think you should try without QoS.
Try specifying the qos=0 module parameter to b43.
If that does not work, additionally apply the following patch.
I think there are some problems with QoS and I think somebody reported some bugs
some time ago. I think they are still not addressed.
If I try with this patch and QoS disabled, the monitor log looks a bit better.
But the connection still doesn't work correctly. However, I only have applied
that patch to the AP. I will also apply it to the station, soon...
In any case, I think this patch is a good thing, as it will completely disable
QoS, if the user requested so.
Index: compat-wireless-2009-05-21/drivers/net/wireless/b43/main.c
===================================================================
--- compat-wireless-2009-05-21.orig/drivers/net/wireless/b43/main.c 2009-05-21 17:16:49.000000000 +0200
+++ compat-wireless-2009-05-21/drivers/net/wireless/b43/main.c 2009-05-21 17:20:48.000000000 +0200
@@ -3064,6 +3064,9 @@
int bslots, tmp;
unsigned int i;
+ if (!b43_modparam_qos)
+ return;
+
bslots = b43_read16(dev, B43_MMIO_RNG) & p->cw_min;
memset(¶ms, 0, sizeof(params));
@@ -3109,6 +3112,9 @@
struct b43_qos_params *params;
unsigned int i;
+ if (!b43_modparam_qos)
+ return;
+
BUILD_BUG_ON(ARRAY_SIZE(b43_qos_shm_offsets) !=
ARRAY_SIZE(wl->qos_params));
@@ -3126,6 +3132,9 @@
struct b43_qos_params *params;
unsigned int i;
+ if (!b43_modparam_qos)
+ return;
+
/* Initialize QoS parameters to sane defaults. */
BUILD_BUG_ON(ARRAY_SIZE(b43_qos_shm_offsets) !=
@@ -3168,6 +3177,15 @@
/* Initialize the core's QOS capabilities */
static void b43_qos_init(struct b43_wldev *dev)
{
+ if (!b43_modparam_qos) {
+ /* Disable QOS support. */
+ b43_hf_write(dev, b43_hf_read(dev) & ~B43_HF_EDCF);
+ b43_write16(dev, B43_MMIO_IFSCTL,
+ b43_read16(dev, B43_MMIO_IFSCTL)
+ & ~B43_MMIO_IFSCTL_USE_EDCF);
+ return;
+ }
+
/* Upload the current QOS parameters. */
b43_qos_upload_all(dev);
--
Greetings, Michael.
--
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
