Francesco Gringoli wrote:
>
> On Jan 26, 2009, at 10:17 PM, Tex wrote:
>
>> I have been running some surveys with the Atheros and Broadcom Drivers.
>> When viewing the frames from wireshark , while in monitor mode, I
>> noticed that the Atheros driver is reporting FCS errors on some frames,
>> but the Broadcom driver isn't, in the radiotap header. If I expand the
>> frame and look at the FCS wireshark reports the frame as bad and shows
>> what the CRC should be. I put printk's in pio_rx_frame() (see below) and
>> noticed that the macstat is being reported as zero. Does this mean that
>> the status is not being sent to the driver from the chip or firmware? Is
>> there some way for me to configure it to report bad FCS frames?
> When the flag B43_MACCTL_KEEP_BAD is enabled in the opmode of b43,
> then the driver activates the corresponding flag in the mac control
> high register so that the firmware is configured to report bad frames
> to the host. However as soon as they are sent through dma, the b43
> driver logs messages like "b43-phy5 debug: RX: Packet dropped" and
> frames are not delivered to the upper layers. To investigate you can
> try to enable that flag by modifying the basic configuration in
> b43_adjust_opmode(struct b43_wldev *dev) defined in main.c.
>
> Cheers,
> -FG
>
>>
>> macstat = le32_to_cpu(rxhdr.mac_status);
>> printk (KERN_DEBUG "pio_rx_frame macstat is %x\n", macstat);
>> if (macstat & B43_RX_MAC_FCSERR) {
>> if (!(q->dev->wl->filter_flags & FIF_FCSFAIL)) {
>> /* Drop frames with failed FCS. */
>> err_msg = "Frame FCS error";
>> goto rx_error;
>> }
>>
>> b43_op_configure filter has the following flags set:
>> *fflags &= FIF_PROMISC_IN_BSS |
>> FIF_ALLMULTI |
>> FIF_FCSFAIL |
>> FIF_PLCPFAIL |
>> FIF_CONTROL |
>> FIF_OTHER_BSS |
>> FIF_BCN_PRBRESP_PROMISC;
>>
>> changed &= FIF_PROMISC_IN_BSS |
>> FIF_ALLMULTI |
>> FIF_FCSFAIL |
>> FIF_PLCPFAIL |
>> FIF_CONTROL |
>> FIF_OTHER_BSS |
>> FIF_BCN_PRBRESP_PROMISC;
>>
>>
>>
>>
>> Thanks much
>> Tex
>>
>> _______________________________________________
>> Bcm43xx-dev mailing list
>> [email protected]
>> https://lists.berlios.de/mailman/listinfo/bcm43xx-dev
> -------
>
> Francesco Gringoli, PhD - Assistant Professor
> Dept. of Electrical Engineering for Automation
> University of Brescia
> via Branze, 38
> 25123 Brescia
> ITALY
>
> Ph: ++39.030.3715843
> FAX: ++39.030.380014
> WWW: http://www.ing.unibs.it/~gringoli
>
>
>
>
>
Thanks Francesco, I'll give that a try. I already have "goto rx_error"
commented out.
-Tex
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