[OpenAFS-devel] AF_INET byte order

Jeffrey Altman jaltman@secure-endpoints.com
Wed, 07 Mar 2007 14:44:34 -0500


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Douglas E. Engert wrote:
> Well on Solaris 10 (Sparc), AF_INET is defines as 2 and in some of
> the header files where they use  ...->sin_family = AF_INET;
> 
> But in /usr/include/portocols/routed.h they do:
> #define RIP_AF_INET htons(AF_INET)
> to use in a RIPv2  struct netinfo { ...
> from RFC 2453.
> 
>    "Unless otherwise specified, fields contain binary integers,
>    in network byte order, with the most-significant octet
>    first (big-endian)"
> 
> So on Solaris at least it looks like you store it in the
> local format. If you want to send it over the netwotk, then
> in network byte order.

That would be true for any data structure that you are going to send
across a network to a peer because you don't know what architecture
the peer is.  That is why we agree upon a network byte order.

afsmonitor is not sending this data structure across the network.
Its using the values locally for producing sockets that can be used
to communicate with the servers.  htons() does not apply in this case.

My guess is that no one has ever used afsmonitor on Linux on x86
successfully.

Jeffrey Altman


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