Hi Mohammed. The platform is H251, made by ST MicroElectronics. The H251 is an intergrated chip, which has an ST7105 inside. The ST7105 has a ST40-300, which has an SH4 CPU at its core. The SH4 can be run in big or little endian mode. I will try to find out what mode we are using. Regards Nick > Message Received: Mar 22 2013, 05:28 AM > From: "Mohammed Shafi" > To: nick@xxxxxxxxxxxxxxxxxxxxxxxx > Cc: linux-wireless@xxxxxxxxxxxxxxx > Subject: Re: ath6kl_usb - ping problems when compiled for sh4. > > On Thu, Mar 21, 2013 at 7:55 PM, wrote: > > 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 . > > good Nick, I' ll try to analyze this. > what platform are you using ? (is it a big/little endian) > > > > > > > Regards > > > > Nick > > > > > > > > > >> Message Received: Mar 21 2013, 02:09 PM > >> From: nick@xxxxxxxxxxxxxxxxxxxxxxxx > >> To: "Mohammed Shafi" > >> Cc: linux-wireless@xxxxxxxxxxxxxxx > >> 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@xxxxxxxxxxxxxxxxxxxxxxxx > >> > To: "Mohammed Shafi" > >> > Cc: linux-wireless@xxxxxxxxxxxxxxx > >> > 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@xxxxxxxxxxxxxxxxxxxxxxxx > >> > > Cc: linux-wireless@xxxxxxxxxxxxxxx > >> > > 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 > >> > > -- > >> > > 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 > >> > > > >> > > >> > -- > >> > 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 > >> > > >> > >> -- > >> 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 > >> > > > > > > -- > thanks, > shafi > -- > 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 > -- 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
