diff options
| author | Danit Goldberg <danitg@mellanox.com> | 2018-04-23 17:01:54 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-05-09 09:50:21 +0200 |
| commit | 7508e14f327f002093918800873e723337f0ceb7 (patch) | |
| tree | 68fadd0fd8c9d60a492ca5c167d9797922355e63 | |
| parent | f0b2a493973ff8da3a648d6b08bca259e78d6481 (diff) | |
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: e126ba97dba9 ("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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/infiniband/hw/mlx5/qp.c | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/drivers/infiniband/hw/mlx5/qp.c b/drivers/infiniband/hw/mlx5/qp.c index 1d68c538d17e..3cdcbfbd6a79 100644 --- a/drivers/infiniband/hw/mlx5/qp.c +++ b/drivers/infiniband/hw/mlx5/qp.c @@ -2168,18 +2168,18 @@ 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 && - !(1 << (rate + MLX5_STAT_RATE_OFFSET) & - MLX5_CAP_GEN(dev->mdev, stat_rate_support))) - --rate; - } - return rate + MLX5_STAT_RATE_OFFSET; + 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, |