From: Bob Pearson <rpearsonhpe@gmail.com>
Date: Thu, 7 Apr 2022 16:04:45 -0500
Subject: RDMA/rxe: Remove reliable datagram support
Patch-mainline: v5.19-rc1
Git-commit: 98c8026331ceabe1df579940b81eec75eb49cdd9
References: jsc#PED-1111

The rdma_rxe driver does not actually support the reliable datagram
transport but contains two references to RD opcodes in driver code.  This
commit removes these references to RD transport opcodes which are never
used.

Link: https://lore.kernel.org/r/cce0f07d-25fc-5880-69e7-001d951750b7@gmail.com
Signed-off-by: Bob Pearson <rpearsonhpe@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/infiniband/sw/rxe/rxe_req.c  |    3 +--
 drivers/infiniband/sw/rxe/rxe_resp.c |    3 +--
 2 files changed, 2 insertions(+), 4 deletions(-)

--- a/drivers/infiniband/sw/rxe/rxe_req.c
+++ b/drivers/infiniband/sw/rxe/rxe_req.c
@@ -413,8 +413,7 @@ static struct sk_buff *init_req_packet(s
 
 	if (pkt->mask & RXE_ATMETH_MASK) {
 		atmeth_set_va(pkt, wqe->iova);
-		if (opcode == IB_OPCODE_RC_COMPARE_SWAP ||
-		    opcode == IB_OPCODE_RD_COMPARE_SWAP) {
+		if (opcode == IB_OPCODE_RC_COMPARE_SWAP) {
 			atmeth_set_swap_add(pkt, ibwr->wr.atomic.swap);
 			atmeth_set_comp(pkt, ibwr->wr.atomic.compare_add);
 		} else {
--- a/drivers/infiniband/sw/rxe/rxe_resp.c
+++ b/drivers/infiniband/sw/rxe/rxe_resp.c
@@ -576,8 +576,7 @@ static enum resp_states process_atomic(s
 
 	qp->resp.atomic_orig = *vaddr;
 
-	if (pkt->opcode == IB_OPCODE_RC_COMPARE_SWAP ||
-	    pkt->opcode == IB_OPCODE_RD_COMPARE_SWAP) {
+	if (pkt->opcode == IB_OPCODE_RC_COMPARE_SWAP) {
 		if (*vaddr == atmeth_comp(pkt))
 			*vaddr = atmeth_swap_add(pkt);
 	} else {