Commit c531024b authored by Mark Zhang's avatar Mark Zhang Committed by Jason Gunthorpe
Browse files

RDMA/mlx5: Add new IB rates support 

Support 56, 25, 100, 200 and 50Gbps IB rates in mlx5 driver.

Link: https://lore.kernel.org/r/20200802081712.1993490-1-leon@kernel.org


Signed-off-by: default avatarMark Zhang <markz@mellanox.com>
Signed-off-by: default avatarLeon Romanovsky <leonro@mellanox.com>
Signed-off-by: default avatarJason Gunthorpe <jgg@nvidia.com>
parent a4e6a1dd

drivers/infiniband/hw/mlx5/qp.c

+27 −3
Original line number Diff line number Diff line
@@ -3088,20 +3088,44 @@ enum { 
	MLX5_PATH_FLAG_COUNTER	= 1 << 2,

};



static int ib_to_mlx5_rate_map(u8 rate)

{

	switch (rate) {

	case IB_RATE_PORT_CURRENT:

		return 0;

	case IB_RATE_56_GBPS:

		return 1;

	case IB_RATE_25_GBPS:

		return 2;

	case IB_RATE_100_GBPS:

		return 3;

	case IB_RATE_200_GBPS:

		return 4;

	case IB_RATE_50_GBPS:

		return 5;

	default:

		return rate + MLX5_STAT_RATE_OFFSET;

	};



	return 0;

}



static int ib_rate_to_mlx5(struct mlx5_ib_dev *dev, u8 rate)

{

	u32 stat_rate_support;



	if (rate == IB_RATE_PORT_CURRENT)

		return 0;



	if (rate < IB_RATE_2_5_GBPS || rate > IB_RATE_600_GBPS)

		return -EINVAL;



	stat_rate_support = MLX5_CAP_GEN(dev->mdev, stat_rate_support);

	while (rate != IB_RATE_PORT_CURRENT &&

	       !(1 << (rate + MLX5_STAT_RATE_OFFSET) &

		 MLX5_CAP_GEN(dev->mdev, stat_rate_support)))

	       !(1 << ib_to_mlx5_rate_map(rate) & stat_rate_support))

		--rate;



	return rate ? rate + MLX5_STAT_RATE_OFFSET : rate;

	return ib_to_mlx5_rate_map(rate);

}



static int modify_raw_packet_eth_prio(struct mlx5_core_dev *dev,

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