linux-kernel - [PATCH rdma-next] IB/mlx5: Expose NDR speed through MAD

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Date:   Wed, 15 Dec 2021 09:54:31 +0200
From:   Leon Romanovsky <leon@...nel.org>
To:     Jason Gunthorpe <jgg@...dia.com>
Cc:     Maher Sanalla <msanalla@...dia.com>, linux-kernel@...r.kernel.org,
        linux-rdma@...r.kernel.org,
        Michael Guralnik <michaelgur@...dia.com>
Subject: [PATCH rdma-next] IB/mlx5: Expose NDR speed through MAD

From: Maher Sanalla <msanalla@...dia.com>

Under MAD query port, Report NDR speed when NDR is supported
in the port capability mask.

Signed-off-by: Maher Sanalla <msanalla@...dia.com>
Reviewed-by: Michael Guralnik <michaelgur@...dia.com>
Signed-off-by: Leon Romanovsky <leonro@...dia.com>
---
 drivers/infiniband/hw/mlx5/mad.c | 5 +++++
 include/rdma/ib_mad.h            | 1 +
 2 files changed, 6 insertions(+)

diff --git a/drivers/infiniband/hw/mlx5/mad.c b/drivers/infiniband/hw/mlx5/mad.c
index ec242a5a17a3..29a888b22789 100644
--- a/drivers/infiniband/hw/mlx5/mad.c
+++ b/drivers/infiniband/hw/mlx5/mad.c
@@ -584,6 +584,11 @@ int mlx5_query_mad_ifc_port(struct ib_device *ibdev, u32 port,
 			    props->port_cap_flags2 & IB_PORT_LINK_SPEED_HDR_SUP)
 				props->active_speed = IB_SPEED_HDR;
 			break;
+		case 8:
+			if (props->port_cap_flags & IB_PORT_CAP_MASK2_SUP &&
+			    props->port_cap_flags2 & IB_PORT_LINK_SPEED_NDR_SUP)
+				props->active_speed = IB_SPEED_NDR;
+			break;
 		}
 	}
 
diff --git a/include/rdma/ib_mad.h b/include/rdma/ib_mad.h
index 465b0d0bdaf8..2e3843b761e8 100644
--- a/include/rdma/ib_mad.h
+++ b/include/rdma/ib_mad.h
@@ -276,6 +276,7 @@ enum ib_port_capability_mask2_bits {
 	IB_PORT_SWITCH_PORT_STATE_TABLE_SUP	= 1 << 3,
 	IB_PORT_LINK_WIDTH_2X_SUP		= 1 << 4,
 	IB_PORT_LINK_SPEED_HDR_SUP		= 1 << 5,
+	IB_PORT_LINK_SPEED_NDR_SUP		= 1 << 10,
 };
 
 #define OPA_CLASS_PORT_INFO_PR_SUPPORT BIT(26)
-- 
2.33.1