[openib-general] IPoIB

[Hal Rosenstock]

A while ago, Tom brought up the issue of IPoIB link level broadcasting
from user space (with the arping tool). Is it possible to do this from
kernel space ? For example, how would/could sendto() work when sending
to a IPoIB link layer address ? If all we wanted to support was
broadcast, perhaps there could be a remapping of the ethernet MAC
broadcast address to the all hosts MGID and QPN for that IPoIB
interface. Or perhaps the entire ipoib pseudoheader should be supported
in this mode. This is needed to support RARPing. Some hosts want to RARP
for their IP address and this should be supported over IPoIB.

-- Hal