[ofw] post send in kernel mode

Prasanna Vv prasanna.vv at oracle.com
Mon Aug 24 08:19:42 PDT 2009


I wish to discuss yet another option for RDS protocol:
Connection establishment in user mode (use of the rdma_cm over Winverbs) 
and data xfer in kernel mode using post send operation.

Basically QP and CQ can be obtained in kernel mode winverbs driver  
using WvQpAcquire(..) and WvCqAcquire() respectively.
And post_send and poll_cq done using HCA verbs interface calls 
QP->pVerbs->post_send() and QP->pVerbs->poll_cq().

Please let me know this kernel mode option for data xfer is feasible or 
am  I missing anything here.

Regards,
Prasanna



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