[openib-general] TCP/IP connection service over IB

Sean Hefty mshefty at ichips.intel.com
Fri Oct 21 12:44:56 PDT 2005


James Lentini wrote:
> Ok. I assume that your 1 byte of version information is broken into 2 
> 4-bit pieces, one for the protocol version and one for the IP version.

That is correct.

> What about making the src and dst ip fields variable length based on 
> the IP version (4 bytes for IPv4 and 16 bytes for IPv6). 
> 
> That would provide more private data for IPv4 networks at the expense 
> of a variable sized header and all the complexity it entails.

That's a possibility that wouldn't add that much complexity.  See my other 
message for yet another approach though.  I'm just not sure that it helps an app 
much to have different private data sizes based on the address size, unless the 
app is written specifically for IPv4.

- Sean



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