> Is there a way to setup the timeout in rdma_connect() ? For IB, the timeout is based on the packet lifetime in the path record returned by the SA. The rdma_cm will retry a CM REQ the maximum number of times (15). > Is there a way to change the CM parameters ? e.g. "Service Timeout" to > wait for moving from "REP wait" state to "Timeout" state, and the number > of send "REQ" retries (From 12.9.5 "Communication Establishement and > Release - Active") ?
There is no direct way to change the timeout parameter. You would need to adjust the subnet timeout values at the SA. > Is struct rdma_conn_param.retry_count the number of "REQ" retries ? > According to the manpage, it seems it doesn't apply to CM. The retry_count applies to the QP and is not associated with the CM timeout. I.e. it maps to REQ:retry_count, versus REQ:max_cm_retries. - Sean
