[realtek] Ethernet Packet Corruption

Rajesh rajesh.v at accord-soft.com
Tue Nov 28 19:46:56 PST 2006


Hi Naresh,

Thanks for the response...

This is the expected value....(60 bytes) (4 bytes crc value will be 
added by the ethernet card)
ff     ff     ff     ff     ff     ff     00     0b     2b     0c
e6   78   08   06   00   01   08     00     06     04
00   01   00   0b   2b   0c   e6     78     c0      a8
00   03   00   00   00   00   00     00     c0      a8
00   2d   00   00   00   00   00     00    00      00
00   00   00   00   00   00   00     00    00      00

packet received varies each time the packet is sent...

some times it is all 00's
sometimes it is all  ff's
sometimes most of the value in the ethernet packet is different from the 
expected one...

Regards,
Rajesh.V

Naresh Deshaveni wrote:
>
> Hi Rajesh,
>
> Is it possible for you to  mail the packet dump.
> So that it can be checked what exactly is corrupt value
> also is it possible for you to give the expected value.
>
>
>
>> From: Rajesh <rajesh.v at accord-soft.com>
>> To: realtek at scyld.com
>> Subject: [realtek] Ethernet Packet Corruption
>> Date: Tue, 28 Nov 2006 14:33:48 +0530
>>
>> Hello,
>>
>> I have developed a device driver for RTL8139 (c) ethernet card and am 
>> encountering the problem in the transmission of packets.
>>
>>
>> The following set up is used to check for the transmission
>>
>> 1) Host A transmits an ARP packet to Host B.
>> 2) Packets are identified on Host B using a sniffer.
>>
>> Problem:
>> Ethernet Packets are getting corrupted on transmission to the Host B. 
>> This is checked by using a sniffer on Host B.
>>
>> The following observations are made while packets are transmitted:
>> 1) Every time a packet is transmitted, the entire frame takes new 
>> corrupted value
>> (ethernet source address, destination address, protocol type, data 
>> (ARP packet)).
>>
>> Could any one tell me what may be the reason for the data corruption?
>>
>>
>> Thanks in Advance,
>> Rajesh.V
>>
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