qed: Add EDPM mode type for user-fw compatibility

In older FW versions the completion flag was treated as the ack flag in
edpm messages. Expose the FW option of setting which mode the QP is in
by adding a flag to the qedr <-> qed API.

Flag is added for backward compatibility with libqedr.
This flag will be set by qedr after determining whether the libqedr is
using the updated version.

Fixes: f109394033 ("qed: Add support for QP verbs")
Signed-off-by: Yuval Basson <[email protected]>
Signed-off-by: Michal Kalderon <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

drivers/net/ethernet/qlogic/qed/qed_rdma.c

@@ -1378,6 +1378,7 @@ qed_rdma_create_qp(void *rdma_cxt,
 		rc = qed_iwarp_create_qp(p_hwfn, qp, out_params);
 		qp->qpid = qp->icid;
 	} else {
+		qp->edpm_mode = GET_FIELD(in_params->flags, QED_ROCE_EDPM_MODE);
 		rc = qed_roce_alloc_cid(p_hwfn, &qp->icid);
 		qp->qpid = ((0xFF << 16) | qp->icid);
 	}

drivers/net/ethernet/qlogic/qed/qed_rdma.h

@@ -183,6 +183,7 @@ struct qed_rdma_qp {
 	void *shared_queue;
 	dma_addr_t shared_queue_phys_addr;
 	struct qed_iwarp_ep *ep;
+	u8 edpm_mode;
 };
 
 static inline bool qed_rdma_is_xrc_qp(struct qed_rdma_qp *qp)

drivers/net/ethernet/qlogic/qed/qed_roce.c

@@ -459,6 +459,9 @@ static int qed_roce_sp_create_requester(struct qed_hwfn *p_hwfn,
 		  ROCE_CREATE_QP_REQ_RAMROD_DATA_XRC_FLAG,
 		  qed_rdma_is_xrc_qp(qp));
 
+	SET_FIELD(p_ramrod->flags2,
+		  ROCE_CREATE_QP_REQ_RAMROD_DATA_EDPM_MODE, qp->edpm_mode);
+
 	p_ramrod->max_ord = qp->max_rd_atomic_req;
 	p_ramrod->traffic_class = qp->traffic_class_tos;
 	p_ramrod->hop_limit = qp->hop_limit_ttl;

include/linux/qed/qed_rdma_if.h

@@ -335,6 +335,9 @@ struct qed_rdma_create_qp_in_params {
 	u16 xrcd_id;
 	u8 stats_queue;
 	enum qed_rdma_qp_type qp_type;
+	u8 flags;
+#define QED_ROCE_EDPM_MODE_MASK      0x1
+#define QED_ROCE_EDPM_MODE_SHIFT     0
 };
 
 struct qed_rdma_create_qp_out_params {