Commit 70aad902 authored by Li Zhijian's avatar Li Zhijian Committed by Jason Gunthorpe
Browse files

RDMA/rxe: Implement flush completion 

Per IBA SPEC, FLUSH will ack in rdma read response with 0 length.

Use IB_WC_FLUSH (aka IB_UVERBS_WC_FLUSH) code to tell userspace a FLUSH
completion.

Link: https://lore.kernel.org/r/20221206130201.30986-9-lizhijian@fujitsu.com


Reviewed-by: default avatarZhu Yanjun <zyjzyj2000@gmail.com>
Signed-off-by: default avatarLi Zhijian <lizhijian@fujitsu.com>
Signed-off-by: default avatarJason Gunthorpe <jgg@nvidia.com>
parent ea1bb00e

drivers/infiniband/sw/rxe/rxe_comp.c

+3 −1
Original line number Diff line number Diff line
@@ -105,6 +105,7 @@ static enum ib_wc_opcode wr_to_wc_opcode(enum ib_wr_opcode opcode) 
	case IB_WR_REG_MR:			return IB_WC_REG_MR;

	case IB_WR_BIND_MW:			return IB_WC_BIND_MW;

	case IB_WR_ATOMIC_WRITE:		return IB_WC_ATOMIC_WRITE;

	case IB_WR_FLUSH:			return IB_WC_FLUSH;



	default:

		return 0xff;
@@ -278,7 +279,8 @@ static inline enum comp_state check_ack(struct rxe_qp *qp, 
		 */

	case IB_OPCODE_RC_RDMA_READ_RESPONSE_MIDDLE:

		if (wqe->wr.opcode != IB_WR_RDMA_READ &&

		    wqe->wr.opcode != IB_WR_RDMA_READ_WITH_INV) {

		    wqe->wr.opcode != IB_WR_RDMA_READ_WITH_INV &&

		    wqe->wr.opcode != IB_WR_FLUSH) {

			wqe->status = IB_WC_FATAL_ERR;

			return COMPST_ERROR;

		}