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Commit b5ebbbc7 authored by Danit Goldberg's avatar Danit Goldberg Committed by Greg Kroah-Hartman
Browse files

IB/mlx5: Use unlimited rate when static rate is not supported 



commit 4f32ac2e452c2180cd2df581cbadac183e27ecd0 upstream.

Before the change, if the user passed a static rate value different
than zero and the FW doesn't support static rate,
it would end up configuring rate of 2.5 GBps.

Fix this by using rate 0; unlimited, in cases where FW
doesn't support static rate configuration.

Cc: <stable@vger.kernel.org> # 3.10
Fixes: e126ba97 ("mlx5: Add driver for Mellanox Connect-IB adapters")
Reviewed-by: default avatarMajd Dibbiny <majd@mellanox.com>
Signed-off-by: default avatarDanit Goldberg <danitg@mellanox.com>
Signed-off-by: default avatarLeon Romanovsky <leonro@mellanox.com>
Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent a27293f2

drivers/infiniband/hw/mlx5/qp.c

+9 −9
Original line number Diff line number Diff line
@@ -2199,18 +2199,18 @@ enum { 


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

{

	if (rate == IB_RATE_PORT_CURRENT) {

	if (rate == IB_RATE_PORT_CURRENT)

		return 0;

	} else if (rate < IB_RATE_2_5_GBPS || rate > IB_RATE_300_GBPS) {



	if (rate < IB_RATE_2_5_GBPS || rate > IB_RATE_300_GBPS)

		return -EINVAL;

	} else {

		while (rate != IB_RATE_2_5_GBPS &&



	while (rate != IB_RATE_PORT_CURRENT &&

	       !(1 << (rate + MLX5_STAT_RATE_OFFSET) &

		 MLX5_CAP_GEN(dev->mdev, stat_rate_support)))

		--rate;

	}



	return rate + MLX5_STAT_RATE_OFFSET;

	return rate ? rate + MLX5_STAT_RATE_OFFSET : rate;

}



static int modify_raw_packet_eth_prio(struct mlx5_core_dev *dev,