ionic: Add Shared Receive Queue (SRQ) support - #1799
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Signed-off-by: Abhijit Gangurde <abhijit.gangurde@amd.com>
Reorganizing RQ initialization for Shared Receive Queue (SRQ) support Signed-off-by: Abhijit Gangurde <abhijit.gangurde@amd.com>
Eliminate the stack of free rq_meta entries. Instead, maintain rq_meta as a parallel array to rq WQEs, indexed by the WQE index. Signed-off-by: Abhijit Gangurde <abhijit.gangurde@amd.com>
Implement provider support for shared receive queue Signed-off-by: Abhijit Gangurde <abhijit.gangurde@amd.com>
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Add Shared Receive Queue (SRQ) support to the ionic RDMA provider, enabling multiple QPs to share a single receive buffer pool.
Patch 1: updates the kernel ABI header, renaming the SRQ response field from qpid to srqid.
Patch 2: refactors RQ helpers to accept struct ionic_rq * instead of struct ionic_qp *, decoupling receive queue operations from the QP.
Patch 3: removes the freelist-based rq_meta (meta->next, meta_head, meta_idx) and replaces it with a direct-indexed parallel array.
Patch 4: adds srq verbs operations.