netdev - [PATCH rdma-next 2/6] IB/mlx5: Expose XDR speed through MAD

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Message-ID: <d30bdec2a66a8a2edd1d84ee61453c58cf346b43.1695204156.git.leon@kernel.org>
Date: Wed, 20 Sep 2023 13:07:41 +0300
From: Leon Romanovsky <leon@...nel.org>
To: Jason Gunthorpe <jgg@...dia.com>
Cc: Or Har-Toov <ohartoov@...dia.com>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	linux-rdma@...r.kernel.org,
	Mark Zhang <markzhang@...dia.com>,
	netdev@...r.kernel.org,
	Paolo Abeni <pabeni@...hat.com>,
	Saeed Mahameed <saeedm@...dia.com>
Subject: [PATCH rdma-next 2/6] IB/mlx5: Expose XDR speed through MAD

From: Or Har-Toov <ohartoov@...dia.com>

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

Signed-off-by: Or Har-Toov <ohartoov@...dia.com>
Reviewed-by: Mark Zhang <markzhang@...dia.com>
Signed-off-by: Leon Romanovsky <leonro@...dia.com>
---
 drivers/infiniband/hw/mlx5/mad.c | 13 +++++++++++++
 include/rdma/ib_mad.h            |  2 ++
 2 files changed, 15 insertions(+)

diff --git a/drivers/infiniband/hw/mlx5/mad.c b/drivers/infiniband/hw/mlx5/mad.c
index 8102ef113b7e..0c3c4e64812c 100644
--- a/drivers/infiniband/hw/mlx5/mad.c
+++ b/drivers/infiniband/hw/mlx5/mad.c
@@ -619,6 +619,19 @@ int mlx5_query_mad_ifc_port(struct ib_device *ibdev, u32 port,
 		}
 	}
 
+	/* Check if extended speeds 2 (XDR/...) are supported */
+	if (props->port_cap_flags & IB_PORT_CAP_MASK2_SUP &&
+	    props->port_cap_flags2 & IB_PORT_EXTENDED_SPEEDS2_SUP) {
+		ext_active_speed = (out_mad->data[56] >> 4) & 0x6;
+
+		switch (ext_active_speed) {
+		case 2:
+			if (props->port_cap_flags2 & IB_PORT_LINK_SPEED_XDR_SUP)
+				props->active_speed = IB_SPEED_XDR;
+			break;
+		}
+	}
+
 	/* If reported active speed is QDR, check if is FDR-10 */
 	if (props->active_speed == 4) {
 		if (dev->port_caps[port - 1].ext_port_cap &
diff --git a/include/rdma/ib_mad.h b/include/rdma/ib_mad.h
index 2e3843b761e8..3f1b58d8b4bf 100644
--- a/include/rdma/ib_mad.h
+++ b/include/rdma/ib_mad.h
@@ -277,6 +277,8 @@ enum ib_port_capability_mask2_bits {
 	IB_PORT_LINK_WIDTH_2X_SUP		= 1 << 4,
 	IB_PORT_LINK_SPEED_HDR_SUP		= 1 << 5,
 	IB_PORT_LINK_SPEED_NDR_SUP		= 1 << 10,
+	IB_PORT_EXTENDED_SPEEDS2_SUP            = 1 << 11,
+	IB_PORT_LINK_SPEED_XDR_SUP              = 1 << 12,
 };
 
 #define OPA_CLASS_PORT_INFO_PR_SUPPORT BIT(26)
-- 
2.41.0