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

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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: e126ba97db ("mlx5: Add driver for Mellanox Connect-IB adapters")
Reviewed-by: Majd Dibbiny <majd@mellanox.com>
Signed-off-by: Danit Goldberg <danitg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Danit Goldberg 2018-04-23 17:01:54 +03:00 committed by Doug Ledford
parent 002bf2282b
commit 4f32ac2e45
1 changed files with 10 additions and 10 deletions
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20
drivers/infiniband/hw/mlx5/qp.c
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@ -2455,18 +2455,18 @@ 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) {
return -EINVAL;
} else {
while (rate != IB_RATE_2_5_GBPS &&
!(1 << (rate + MLX5_STAT_RATE_OFFSET) &
MLX5_CAP_GEN(dev->mdev, stat_rate_support)))
--rate;
}
return rate + MLX5_STAT_RATE_OFFSET;
if (rate < IB_RATE_2_5_GBPS || rate > IB_RATE_300_GBPS)
return -EINVAL;
while (rate != IB_RATE_PORT_CURRENT &&
!(1 << (rate + MLX5_STAT_RATE_OFFSET) &
MLX5_CAP_GEN(dev->mdev, stat_rate_support)))
--rate;
return rate ? rate + MLX5_STAT_RATE_OFFSET : rate;
}
static int modify_raw_packet_eth_prio(struct mlx5_core_dev *dev,