Commit 4022c7b6 authored by Maher Sanalla's avatar Maher Sanalla Committed by Leon Romanovsky
Browse files

RDMA/mlx5: Add support for 1600_8x lane speed 



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: default avatarMichael Guralnik <michaelgur@nvidia.com>
Signed-off-by: default avatarMaher Sanalla <msanalla@nvidia.com>
Link: https://patch.msgid.link/20251120-speed-8-v1-2-e6a7efef8cb8@nvidia.com


Reviewed-by: default avatarKalesh AP <kalesh-anakkur.purayil@broadcom.com>
Reviewed-by: default avatarZhu Yanjun <yanjun.zhu@linux.dev>
Signed-off-by: default avatarLeon Romanovsky <leon@kernel.org>
parent 0f1f9b5e

drivers/infiniband/hw/mlx5/main.c

+4 −0
Original line number Diff line number Diff line
@@ -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;

	}

drivers/infiniband/hw/mlx5/qp.c

+3 −2
Original line number Diff line number Diff line
@@ -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);