netdev - [PATCH net-next] qed: Add EDPM mode type for user-fw compatibility

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Date:   Tue, 26 May 2020 09:41:20 +0300
From:   Michal Kalderon <michal.kalderon@...vell.com>
To:     <davem@...emloft.net>, <michal.kalderon@...vell.com>,
        <yuval.bason@...vell.com>, <ariel.elior@...vell.com>
CC:     <netdev@...r.kernel.org>
Subject: [PATCH net-next] qed: Add EDPM mode type for user-fw compatibility

From: Yuval Basson <yuval.bason@...vell.com>

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: f10939403352 ("qed: Add support for QP verbs")
Signed-off-by: Yuval Basson <yuval.bason@...vell.com>
Signed-off-by: Michal Kalderon <michal.kalderon@...vell.com>
---
 drivers/net/ethernet/qlogic/qed/qed_rdma.c | 1 +
 drivers/net/ethernet/qlogic/qed/qed_rdma.h | 1 +
 drivers/net/ethernet/qlogic/qed/qed_roce.c | 3 +++
 include/linux/qed/qed_rdma_if.h            | 3 +++
 4 files changed, 8 insertions(+)

diff --git a/drivers/net/ethernet/qlogic/qed/qed_rdma.c b/drivers/net/ethernet/qlogic/qed/qed_rdma.c
index 50985871cd3d..98455f698f53 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_rdma.c
+++ b/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);
 	}
diff --git a/drivers/net/ethernet/qlogic/qed/qed_rdma.h b/drivers/net/ethernet/qlogic/qed/qed_rdma.h
index 5a7ebc764bb6..3898cae61e7a 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_rdma.h
+++ b/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)
diff --git a/drivers/net/ethernet/qlogic/qed/qed_roce.c b/drivers/net/ethernet/qlogic/qed/qed_roce.c
index 46a4d09eacef..4566815f7b87 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_roce.c
+++ b/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;
diff --git a/include/linux/qed/qed_rdma_if.h b/include/linux/qed/qed_rdma_if.h
index f93edd5750a5..584077565f12 100644
--- a/include/linux/qed/qed_rdma_if.h
+++ b/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 {
-- 
2.14.5