On 2/23/2018 9:26 AM, Daniel Drake wrote:
Hi,
On Wed, Feb 21, 2018 at 12:39 PM, Daniel Drake <drake@xxxxxxxxxxxx> wrote:
Thanks for looking into this. Here is the brcmfmac43455-sdio.txt file
we are using:
https://gist.github.com/dsd/d7ee3caa6dfd77f0bcd16cf272b20298
This is identical to the 4345r6nvram.txt file from windows.
I checked Windows again and it seems to be using a firmware file
4345r6rtecdc.bin alongside this nvram data.
This firmware is different from the one in linux-firmware. I've
uploaded it here:
https://drive.google.com/open?id=1MUsiaoozslJb8SCYOR-FNbJFuD-h4PY_
I was hoping to try this on Linux to see if it makes any difference to
the issue seen here.
However, with thisi firmware in place, I can't connect to the network
at all. It associates, wpa_supplicant never sees the first WPA2 key
message sent from the AP - even though wireshark on a separate monitor
shows that the key message was sent, and that the STA acked it.
I turned off WPA2 to make it an open network instead, and now I am
unable to complete the DHCP conversation. According to the monitor
station, the STA succesfully transmits DHCPDISCOVER and the AP
responds with DHCPOFFER. The offer is acked, but dhclient never sees
it, and eventually times out.
Any ideas why this firmware may not be working at all on linux?
Yup. Windows firmware talks NDIS. If you run 'strings 4345r6rtecdc.bin |
tail -1' you can see the firmware build target and it likely has 'ndis'
in it.
Now are you using BT as well on this device? Another suggestion I got is
to disable transmit beamforming which brcmfmac enables by default. Not
sure if this device supports it, but could you try the patch below.
Regards,
Arend
diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c
b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c
index 9be0b05..512ea57 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c
@@ -363,9 +363,6 @@ int brcmf_c_preinit_dcmds(struct brcmf_if *ifp)
goto done;
}
- /* Enable tx beamforming, errors can be ignored (not supported) */
- (void)brcmf_fil_iovar_int_set(ifp, "txbf", 1);
-
/* do bus specific preinit here */
err = brcmf_bus_preinit(ifp->drvr->bus_if);
done:
