[openib-general] CMA IPv6 support

[Sean Hefty]

Michael S. Tsirkin wrote:
> Sean, CMA currently does not support IPv6 addresses at all. Is that right?

This is correct.  At best, there's some code in places to handle it.

> However, while I don't have immediate need to make real IPv6 addressing to work,
> some applications (notably Java) always use AF_INET6 sockets for both IPv4 and
> IPv6 communications. (Applications that want to restrict their use of AF_INET6
> socket to IPv6 communications only can set the IPV6_V6ONLY option).
> 
> I suggest implementing the support for IPv6 mapped IPv4 addresses in CMA
> as a first step, with an eye towards full IPv6 support in the future.
> 
> What do you think?

I agree that it needs to be added.  What I lack at the moment is the time to do 
it.  I don't think that it would be a huge effort to add proper support, so I'd 
rather not put in a temporary solution.

- Sean