> Anyway.. what would really be useful is to have interfaces export
> their receive buffer size, so that upper layers can do something
> useful with that value. Limit the rsize and wsize in the case
> of NFS. Would it be a good idea to add such information to
> the if_data structure?

Conversely, NICs that are able to accomodate varying buffer sizes
could benefit from knowledge about various machine parameters.
E.g. increasing the buffer sizes on machines that do NFS; increasing
then even more if doing NFS with large burst sizes, etc..

-pk