[openib-general] Re: Mellanox HCAs: outstanding RDMAs

[Michael S. Tsirkin]

Quoting r. Talpey, Thomas <Thomas.Talpey at netapp.com>:
> But, it really doesn't matter. The point is, an upper layer should be paying
> attention to the number of RDMA Reads it posts, or else suffer either the
> queue-stalling or connection-failing consequences. Bad stuff either way.

Queue-stalling is not necessarily bad, for example if the ULP needs to perform
multiple RDMA reads anyway. You can use multipe QPs if you do not require
ordering between operations.

Connection-failing *is* bad stuff, IMO it might be compliant but its clearly
broken in the same way that a NIC that drops all packets might be complaint but
is broken.

-- 
MST