efa: Enable creation of CQs with external memory #1608
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To commit: ?? ("RDMA/efa: Add CQ with external memory support").
Signed-off-by: Michael Margolin <mrgolin@amazon.com>
Extend EFA direct verbs to allow querying of QP and CQ parameters. At first stage those new verbs enable getting queues' virtual addresses as well as their structure what can be used for accelerator driven datapath. Reviewed-by: Daniel Kranzdorf <dkkranzd@amazon.com> Reviewed-by: Yonatan Nachum <ynachum@amazon.com> Signed-off-by: Michael Margolin <mrgolin@amazon.com>
Extend the EFA direct verbs interface to enable creation of CQs on top of pre-allocated memory buffers. The memory can be passed by supplying a dmabuf fd and offset. Reviewed-by: Daniel Kranzdorf <dkkranzd@amazon.com> Reviewed-by: Yonatan Nachum <ynachum@amazon.com> Signed-off-by: Michael Margolin <mrgolin@amazon.com>
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The related kernel patch is here. |
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Add an option to create CQs through EFA direct verbs with pre-allocated memory, by passing dmabuf fd and offset, and additionally expose SQ, RQ and CQ alignment and mappings. This together allows passing data path handling to accelerator threads.