[openib-general] Re: [PATCH] mad_rmpp: Fix receive length calculation

[Sean Hefty]

Hal Rosenstock wrote:
>>>mad_rmpp: Fix receive length calculation
>>
>>Hal, can you explain problem with the current calculation?  Why does pad need to 
>>be adjusted by one header size?
> 
> 
> Because the data size comes out to be the class specific data size, but
> the payload length in the last segment includes the class header as well
> as the filled in data in that last segment.

Ah - got it now.  Thanks.  What about using a different calculation to determine 
the pad rather than subtracting the hdr_size (which includes the class specific 
header) and then adding the size of the class specific header back in?  Can we 
just do something like sizeof MAD - payload?

- Sean