Commit f946e45f authored by Meir Lichtinger's avatar Meir Lichtinger Committed by Jason Gunthorpe
Browse files

IB/mlx5: Add support for NDR link speed 

The IBTA specification has new speed - NDR. That speed supports signaling
rate of 100Gb. mlx5 IB driver translates link modes reported by ConnectX
device to IB speed and width. Added translation of new 100Gb, 200Gb and
400Gb link modes to NDR IB type and width of x1, x2 or x4 respectively.

Link: https://lore.kernel.org/r/20201026133738.1340432-3-leon@kernel.org


Signed-off-by: default avatarMeir Lichtinger <meirl@mellanox.com>
Signed-off-by: default avatarLeon Romanovsky <leonro@nvidia.com>
Signed-off-by: default avatarJason Gunthorpe <jgg@nvidia.com>
parent c7adf771

drivers/infiniband/hw/mlx5/main.c

+12 −0
Original line number Diff line number Diff line
@@ -419,10 +419,22 @@ static int translate_eth_ext_proto_oper(u32 eth_proto_oper, u16 *active_speed, 
		*active_width = IB_WIDTH_2X;

		*active_speed = IB_SPEED_HDR;

		break;

	case MLX5E_PROT_MASK(MLX5E_100GAUI_1_100GBASE_CR_KR):

		*active_width = IB_WIDTH_1X;

		*active_speed = IB_SPEED_NDR;

		break;

	case MLX5E_PROT_MASK(MLX5E_200GAUI_4_200GBASE_CR4_KR4):

		*active_width = IB_WIDTH_4X;

		*active_speed = IB_SPEED_HDR;

		break;

	case MLX5E_PROT_MASK(MLX5E_200GAUI_2_200GBASE_CR2_KR2):

		*active_width = IB_WIDTH_2X;

		*active_speed = IB_SPEED_NDR;

		break;

	case MLX5E_PROT_MASK(MLX5E_400GAUI_4_400GBASE_CR4_KR4):

		*active_width = IB_WIDTH_4X;

		*active_speed = IB_SPEED_NDR;

		break;

	default:

		return -EINVAL;

	}