4.14-stable review patch. If anyone has any objections, please let me know.
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From: Danit Goldberg danitg@mellanox.com
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
--- drivers/infiniband/hw/mlx5/qp.c | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-)
--- a/drivers/infiniband/hw/mlx5/qp.c +++ b/drivers/infiniband/hw/mlx5/qp.c @@ -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 && - !(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,