SV: [lwip-users] Odd byte packets in LWIP

[Jan Wester]

Hi

I had problem with odd length in the driver for Ethernet Controller, depending on the hardware how the Ethernet Controller is connected

to the processor.

We use ARM with Davicom Ethernet Controller.

We also got problem with odd startaddress for buffer, but I think what is ARM specific.

//Jan

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Från: address@hidden [mailto:address@hiddenFör Nishen Naidu
Skickat: den 11 november 2003 07:29
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Ämne: [lwip-users] Odd byte packets in LWIP

Hi

 

I'm having a problem sending out packets of odd length on certain occasions.

Does lwip work well with odd length packets?

I read the following comment in some lwip sample code:

/*

 

Important!!! LwIP data alignment issue:
   As of now LwIP code does not handle odd byte length packets properly. So round packets to even byte
   length by adding space characters (' '). This is true only for processors that cannot handle
   mis-aligned memory access.

 

*/

is this correct??

 

Thanks

Nishen