Ranjit Pandit wrote:
I'm also trying to figure out whether to use CM or CMA for RDS
Please note that the CMA does much more then making your CM interaction easier, eg handle IP to RDMA (eg IB) address translation, being at hotplug client and generally provides IP based RDMA transport neutral connection management service. Combining this with the ib_verbs api being also RDMA transport neutral enables an app/ulp to be such.
Eventually, most (all) the middlewares/ULPs are to be coded over the CMA and ib_verbs, eg uDAPL, iSER, NFSoRDMA, Lustre, SDP, SRP(?). The iSER initiator code over the CMA is under work and initial drop is commited to the openib svn.
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