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RDMA/mlx5: Add support for 1600_8x lane speed

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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@nvidia.com>
Signed-off-by: Maher Sanalla <msanalla@nvidia.com>
Link: https://patch.msgid.link/20251120-speed-8-v1-2-e6a7efef8cb8@nvidia.com
Reviewed-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Reviewed-by: Zhu Yanjun <yanjun.zhu@linux.dev>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
This commit is contained in:
Maher Sanalla
2025-11-20 17:15:16 +02:00
committed by Leon Romanovsky
parent 0f1f9b5e47
commit 4022c7b634
2 changed files with 7 additions and 2 deletions
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4
drivers/infiniband/hw/mlx5/main.c
View File

@@ -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;
}

5
drivers/infiniband/hw/mlx5/qp.c
View File

@@ -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);