linux-kernel - [PATCH rdma-next 2/2] RDMA/mlx5: Add support for 1600

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20251120-speed-8-v1-2-e6a7efef8cb8@nvidia.com>
Date: Thu, 20 Nov 2025 17:15:16 +0200
From: Leon Romanovsky <leon@...nel.org>
To: Jason Gunthorpe <jgg@...pe.ca>,
	Leon Romanovsky <leon@...nel.org>
Cc: linux-rdma@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Maher Sanalla <msanalla@...dia.com>,
	Michael Guralnik <michaelgur@...dia.com>
Subject: [PATCH rdma-next 2/2] RDMA/mlx5: Add support for 1600_8x lane speed

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

Add a check for 1600G_8X link speed when querying PTYS and report it
back correctly when needed.

While at it, adjust mlx5 function which maps the speed rate from IB
spec values to internal driver values to be able to handle speeds
up to 1600Gbps.

Reviewed-by: Michael Guralnik <michaelgur@...dia.com>
Signed-off-by: Maher Sanalla <msanalla@...dia.com>
Signed-off-by: Leon Romanovsky <leonro@...dia.com>
---
 drivers/infiniband/hw/mlx5/main.c | 4 ++++
 drivers/infiniband/hw/mlx5/qp.c   | 5 +++--
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c
index 90daa58126f4..40284bbb45d6 100644
--- a/drivers/infiniband/hw/mlx5/main.c
+++ b/drivers/infiniband/hw/mlx5/main.c
@@ -511,6 +511,10 @@ static int translate_eth_ext_proto_oper(u32 eth_proto_oper, u16 *active_speed,
 		*active_width = IB_WIDTH_4X;
 		*active_speed = IB_SPEED_XDR;
 		break;
+	case MLX5E_PROT_MASK(MLX5E_1600TAUI_8_1600TBASE_CR8_KR8):
+		*active_width = IB_WIDTH_8X;
+		*active_speed = IB_SPEED_XDR;
+		break;
 	default:
 		return -EINVAL;
 	}
diff --git a/drivers/infiniband/hw/mlx5/qp.c b/drivers/infiniband/hw/mlx5/qp.c
index 88724d15705d..69af20790481 100644
--- a/drivers/infiniband/hw/mlx5/qp.c
+++ b/drivers/infiniband/hw/mlx5/qp.c
@@ -3451,10 +3451,11 @@ int mlx5r_ib_rate(struct mlx5_ib_dev *dev, u8 rate)
 {
 	u32 stat_rate_support;
 
-	if (rate == IB_RATE_PORT_CURRENT || rate == IB_RATE_800_GBPS)
+	if (rate == IB_RATE_PORT_CURRENT || rate == IB_RATE_800_GBPS ||
+	    rate == IB_RATE_1600_GBPS)
 		return 0;
 
-	if (rate < IB_RATE_2_5_GBPS || rate > IB_RATE_800_GBPS)
+	if (rate < IB_RATE_2_5_GBPS || rate > IB_RATE_1600_GBPS)
 		return -EINVAL;
 
 	stat_rate_support = MLX5_CAP_GEN(dev->mdev, stat_rate_support);

-- 
2.51.1