Re: ath6kl_usb - ping problems when compiled for sh4.

[nick@nhthomas.freeserve.co.uk]

Hi Mohammed,

OK, so I added the same printks further down in that function.
There is a memcpy in there, and I added the same debug just after the memcpy.

And, the eth_hdr->h_dest has been changed to a wrong MAC address - by something.

And, it must be something wrong in skb_push .


Regards

Nick




> Message Received: Mar 21 2013, 02:09 PM
> From: nick@nhthomas.freeserve.co.uk
> To: "Mohammed Shafi"
> Cc: linux-wireless@vger.kernel.org
> Subject: Re: ath6kl_usb - ping problems when compiled for sh4.
>
>
> Hi Mohammed,
>
> I've added some debug at the top of ath6kl_wmi_dix_2_dot3 function.
>
> Just after:
>
> eth_hdr = (struct ethhdr *) skb->data;
> type = eth_hdr->h_proto;
>
> I added some debug to print all the values of eth_hdr->h_dest and eth_hdr->h_source .
> And, all look correct at that point.
>
> Regards
>
> Nick
>
>
> > Message Received: Mar 21 2013, 01:35 PM
> > From: nick@nhthomas.freeserve.co.uk
> > To: "Mohammed Shafi"
> > Cc: linux-wireless@vger.kernel.org
> > Subject: Re: ath6kl_usb - ping problems when compiled for sh4.
> >
> > Hi Mohammed,
> >
> > What do you need to me to do on this?
> > I see that function in the wmi.c file.
> >
> > Do you want me to add some debug printk's in there somewhere?
> >
> > Regards
> >
> > Nick
> >
> > > Message Received: Mar 21 2013, 11:42 AM
> > > From: "Mohammed Shafi"
> > > To: nick@nhthomas.freeserve.co.uk
> > > Cc: linux-wireless@vger.kernel.org
> > > Subject: Re: ath6kl_usb - ping problems when compiled for sh4.
> > >
> > > On Wed, Mar 20, 2013 at 10:33 PM, wrote:
> > > >
> > > > Here is another example, taken from Wireshark.
> > > > It's an ARP response, effectively saying IP address 192.168.0.107 is at 00:03:7f:20:50:59
> > > >
> > > > This is a message coming out of the wifi adaptor, and the above numbers are the IP address, and MAC address of the wifi device.
> > > >
> > > > 7f 20 50 59 00 24 00 03 7f 20 50 59 08 06 00 01
> > > > 08 00 06 04 00 02 00 03 7f 20 50 59 c0 a8 00 07
> > > > 20 cf 30 94 83 7b c0 a8 00 65
> > > >
> > > > What we see here is the Destination MAC address is 7f:20:50:59:00:24 (first 6 bytes).
> > > > But that's wrong. It should be 20:cf:30:94:83:7b .
> > > >
> > > > The other parts look right though:
> > > > 00:03:7f:20:50:59 is the MAC of the wifi device.
> > > > c0 a8 00 65 is 192.168.0.101 which is the IP address of the destination.
> > > > c0 a8 00 07 is the IP address of the wifi adaptor itself.
> > >
> > > let us check in ath6kl_wmi_dix_2_dot3, that should give us some clue.
> > >
> > > >
> > > > So, where in the code is the first 6 bytes generated ?
> > > >
> > > >
> > > > Regards
> > > >
> > > > Nick
> > >
> > >
> > >
> > > --
> > > thanks,
> > > shafi
> > > --
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