[PATCH for-next 10/13] RDMA/rxe: Compute next opcode for XRC

[Bob Pearson <rpearsonhpe@gmail.com>]

Extend rxe_req.c to compute next opcodes for XRC work requests.

Signed-off-by: Bob Pearson <rpearsonhpe@gmail.com>
---
 drivers/infiniband/sw/rxe/rxe_req.c | 75 +++++++++++++++++++++++++++--
 1 file changed, 72 insertions(+), 3 deletions(-)

diff --git a/drivers/infiniband/sw/rxe/rxe_req.c b/drivers/infiniband/sw/rxe/rxe_req.c
index 3eee4d8dbe48..b6f6614a3f32 100644
--- a/drivers/infiniband/sw/rxe/rxe_req.c
+++ b/drivers/infiniband/sw/rxe/rxe_req.c
@@ -240,9 +240,75 @@ static int next_opcode_rc(struct rxe_qp *qp, u32 opcode, int fits)
 		else
 			return fits ? IB_OPCODE_RC_SEND_ONLY_WITH_INVALIDATE :
 				IB_OPCODE_RC_SEND_FIRST;
-	case IB_WR_REG_MR:
-	case IB_WR_LOCAL_INV:
-		return opcode;
+	}
+
+	return -EINVAL;
+}
+
+static int next_opcode_xrc(struct rxe_qp *qp, u32 opcode, int fits)
+{
+	switch (opcode) {
+	case IB_WR_RDMA_WRITE:
+		if (qp->req.opcode == IB_OPCODE_XRC_RDMA_WRITE_FIRST ||
+		    qp->req.opcode == IB_OPCODE_XRC_RDMA_WRITE_MIDDLE)
+			return fits ?
+				IB_OPCODE_XRC_RDMA_WRITE_LAST :
+				IB_OPCODE_XRC_RDMA_WRITE_MIDDLE;
+		else
+			return fits ?
+				IB_OPCODE_XRC_RDMA_WRITE_ONLY :
+				IB_OPCODE_XRC_RDMA_WRITE_FIRST;
+
+	case IB_WR_RDMA_WRITE_WITH_IMM:
+		if (qp->req.opcode == IB_OPCODE_XRC_RDMA_WRITE_FIRST ||
+		    qp->req.opcode == IB_OPCODE_XRC_RDMA_WRITE_MIDDLE)
+			return fits ?
+				IB_OPCODE_XRC_RDMA_WRITE_LAST_WITH_IMMEDIATE :
+				IB_OPCODE_XRC_RDMA_WRITE_MIDDLE;
+		else
+			return fits ?
+				IB_OPCODE_XRC_RDMA_WRITE_ONLY_WITH_IMMEDIATE :
+				IB_OPCODE_XRC_RDMA_WRITE_FIRST;
+
+	case IB_WR_SEND:
+		if (qp->req.opcode == IB_OPCODE_XRC_SEND_FIRST ||
+		    qp->req.opcode == IB_OPCODE_XRC_SEND_MIDDLE)
+			return fits ?
+				IB_OPCODE_XRC_SEND_LAST :
+				IB_OPCODE_XRC_SEND_MIDDLE;
+		else
+			return fits ?
+				IB_OPCODE_XRC_SEND_ONLY :
+				IB_OPCODE_XRC_SEND_FIRST;
+
+	case IB_WR_SEND_WITH_IMM:
+		if (qp->req.opcode == IB_OPCODE_XRC_SEND_FIRST ||
+		    qp->req.opcode == IB_OPCODE_XRC_SEND_MIDDLE)
+			return fits ?
+				IB_OPCODE_XRC_SEND_LAST_WITH_IMMEDIATE :
+				IB_OPCODE_XRC_SEND_MIDDLE;
+		else
+			return fits ?
+				IB_OPCODE_XRC_SEND_ONLY_WITH_IMMEDIATE :
+				IB_OPCODE_XRC_SEND_FIRST;
+
+	case IB_WR_RDMA_READ:
+		return IB_OPCODE_XRC_RDMA_READ_REQUEST;
+
+	case IB_WR_ATOMIC_CMP_AND_SWP:
+		return IB_OPCODE_XRC_COMPARE_SWAP;
+
+	case IB_WR_ATOMIC_FETCH_AND_ADD:
+		return IB_OPCODE_XRC_FETCH_ADD;
+
+	case IB_WR_SEND_WITH_INV:
+		if (qp->req.opcode == IB_OPCODE_XRC_SEND_FIRST ||
+		    qp->req.opcode == IB_OPCODE_XRC_SEND_MIDDLE)
+			return fits ? IB_OPCODE_XRC_SEND_LAST_WITH_INVALIDATE :
+				IB_OPCODE_XRC_SEND_MIDDLE;
+		else
+			return fits ? IB_OPCODE_XRC_SEND_ONLY_WITH_INVALIDATE :
+				IB_OPCODE_XRC_SEND_FIRST;
 	}
 
 	return -EINVAL;
@@ -323,6 +389,9 @@ static int next_opcode(struct rxe_qp *qp, struct rxe_send_wqe *wqe,
 		}
 		break;
 
+	case IB_QPT_XRC_INI:
+		return next_opcode_xrc(qp, opcode, fits);
+
 	default:
 		break;
 	}
-- 
2.30.2