[openib-general] Re: RFC: cma: need rdma_unbind

[Sean Hefty]

Michael S. Tsirkin wrote:
> No. A socket is a 5 tuple (proto, local addr, local port, remote addr, remote
> port).  unbind just says that you can reuse local addresses, so e.g. a new
> connection request will connect to a new socket.

I understand.  But if both sides do this, then the local and remote ports become 
available for re-use, and a new connection between the systems could end up with 
the same tuple.

> Maybe rename it unbind_local?

I'm fine with the name rdma_unbind().  I will likely change rdma_bind_addr() to 
just rdma_bind() at some point.  I'm just trying to determine what the real 
limitations are to rdma_unbind(), or if there's some other solution that we're 
missing that may make more sense, such as having SDP control its own port space.

- Sean