IB/ipath: Send ACK invalid where appropriate

The IB specification ch. 9.9.3 table 58 says that a QP which isn't set
up for the operation should return a NAK invalid request.
Signed-off-by: Robert Walsh <robert.walsh@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

drivers/infiniband/hw/ipath/ipath_rc.c

@@ -1711,6 +1711,9 @@ void ipath_rc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr,
 	case OP(RDMA_WRITE_FIRST):
 	case OP(RDMA_WRITE_ONLY):
 	case OP(RDMA_WRITE_ONLY_WITH_IMMEDIATE):
+		if (unlikely(!(qp->qp_access_flags &
+			       IB_ACCESS_REMOTE_WRITE)))
+			goto nack_inv;
 		/* consume RWQE */
 		/* RETH comes after BTH */
 		if (!header_in_data)
@@ -1740,9 +1743,6 @@ void ipath_rc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr,
 			qp->r_sge.sge.length = 0;
 			qp->r_sge.sge.sge_length = 0;
 		}
-		if (unlikely(!(qp->qp_access_flags &
-			       IB_ACCESS_REMOTE_WRITE)))
-			goto nack_acc;
 		if (opcode == OP(RDMA_WRITE_FIRST))
 			goto send_middle;
 		else if (opcode == OP(RDMA_WRITE_ONLY))
@@ -1756,8 +1756,9 @@ void ipath_rc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr,
 		u32 len;
 		u8 next;
 
-		if (unlikely(!(qp->qp_access_flags & IB_ACCESS_REMOTE_READ)))
-			goto nack_acc;
+		if (unlikely(!(qp->qp_access_flags &
+			       IB_ACCESS_REMOTE_READ)))
+			goto nack_inv;
 		next = qp->r_head_ack_queue + 1;
 		if (next > IPATH_MAX_RDMA_ATOMIC)
 			next = 0;
@@ -1832,7 +1833,7 @@ void ipath_rc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr,
 
 		if (unlikely(!(qp->qp_access_flags &
 			       IB_ACCESS_REMOTE_ATOMIC)))
-			goto nack_acc;
+			goto nack_inv;
 		next = qp->r_head_ack_queue + 1;
 		if (next > IPATH_MAX_RDMA_ATOMIC)
 			next = 0;

drivers/infiniband/hw/ipath/ipath_ruc.c

@@ -319,12 +319,22 @@ static void ipath_ruc_loopback(struct ipath_qp *sqp)
 		break;
 
 	case IB_WR_RDMA_WRITE_WITH_IMM:
+		if (unlikely(!(qp->qp_access_flags &
+			       IB_ACCESS_REMOTE_WRITE))) {
+			wc.status = IB_WC_REM_INV_REQ_ERR;
+			goto err;
+		}
 		wc.wc_flags = IB_WC_WITH_IMM;
 		wc.imm_data = wqe->wr.imm_data;
 		if (!ipath_get_rwqe(qp, 1))
 			goto rnr_nak;
 		/* FALLTHROUGH */
 	case IB_WR_RDMA_WRITE:
+		if (unlikely(!(qp->qp_access_flags &
+			       IB_ACCESS_REMOTE_WRITE))) {
+			wc.status = IB_WC_REM_INV_REQ_ERR;
+			goto err;
+		}
 		if (wqe->length == 0)
 			break;
 		if (unlikely(!ipath_rkey_ok(qp, &qp->r_sge, wqe->length,
@@ -354,8 +364,10 @@ static void ipath_ruc_loopback(struct ipath_qp *sqp)
 
 	case IB_WR_RDMA_READ:
 		if (unlikely(!(qp->qp_access_flags &
-			       IB_ACCESS_REMOTE_READ)))
-			goto acc_err;
+			       IB_ACCESS_REMOTE_READ))) {
+			wc.status = IB_WC_REM_INV_REQ_ERR;
+			goto err;
+		}
 		if (unlikely(!ipath_rkey_ok(qp, &sqp->s_sge, wqe->length,
 					    wqe->wr.wr.rdma.remote_addr,
 					    wqe->wr.wr.rdma.rkey,
@@ -369,8 +381,10 @@ static void ipath_ruc_loopback(struct ipath_qp *sqp)
 	case IB_WR_ATOMIC_CMP_AND_SWP:
 	case IB_WR_ATOMIC_FETCH_AND_ADD:
 		if (unlikely(!(qp->qp_access_flags &
-			       IB_ACCESS_REMOTE_ATOMIC)))
-			goto acc_err;
+			       IB_ACCESS_REMOTE_ATOMIC))) {
+			wc.status = IB_WC_REM_INV_REQ_ERR;
+			goto err;
+		}
 		if (unlikely(!ipath_rkey_ok(qp, &qp->r_sge, sizeof(u64),
 					    wqe->wr.wr.atomic.remote_addr,
 					    wqe->wr.wr.atomic.rkey,