Michael S. Tsirkin wrote:
Sean, how come rdma_cm_id port_num field is only 8 bit?
I think it must be at least 16 - I need to get at the port number
after binding it with a wildcard 0 port.
This is the port number of the rdma device, not the TCP port number. The TCP
port number is part of the rdma_route::rdma_addr::src_addr.
Wanted to make sure: will CMA let me bind to port 0, and select a port for me?
The CMA will let you bind to port 0, but it doesn't select a port for you. This
was something that James brought up earlier, but there's not a decent fix for
this that can handle iWarp as well.
The issue is the current CMA port spaces may be distinct from real TCP/UPD/etc.
port spaces. So, port 0 can work fine from the CMA's perspective.
Are you wanting a port value for listening or connecting?
- Sean
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