[openib-general] Mellanox HCAs: outstanding RDMAs

[Roland Dreier]

 > What happens if one tries to do RDMA (say write for example) higher than
 > 4 (or 128 in changed case)? does it just wait till previos operation
 > is completed?
 >  I don't remember seeing any error ....it was only
 > limited by the send Q-depth which can go much larger value.

Yes, the limit of outstanding RDMAs is not related to the send queue
depth.  Of course you can post many more than 4 RDMAs to a send queue
-- the HCA just won't have more than 4 requests outstanding at a time.