From: saeed@kernel.org
To: "David S. Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>
Cc: netdev@vger.kernel.org, Aya Levin <ayal@mellanox.com>,
Eran Ben Elisha <eranbe@nvidia.com>,
Moshe Shemesh <moshe@nvidia.com>,
Saeed Mahameed <saeedm@nvidia.com>
Subject: [net 12/15] net/mlx5e: Fix return status when setting unsupported FEC mode
Date: Wed, 30 Sep 2020 19:05:13 -0700 [thread overview]
Message-ID: <20201001020516.41217-13-saeed@kernel.org> (raw)
In-Reply-To: <20201001020516.41217-1-saeed@kernel.org>
From: Aya Levin <ayal@mellanox.com>
Verify the configured FEC mode is supported by at least a single link
mode before applying the command. Otherwise fail the command and return
"Operation not supported".
Prior to this patch, the command was successful, yet it falsely set all
link modes to FEC auto mode - like configuring FEC mode to auto. Auto
mode is the default configuration if a link mode doesn't support the
configured FEC mode.
Fixes: b5ede32d3329 ("net/mlx5e: Add support for FEC modes based on 50G per lane links")
Signed-off-by: Aya Levin <ayal@mellanox.com>
Reviewed-by: Eran Ben Elisha <eranbe@nvidia.com>
Reviewed-by: Moshe Shemesh <moshe@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
---
drivers/net/ethernet/mellanox/mlx5/core/en/port.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/port.c b/drivers/net/ethernet/mellanox/mlx5/core/en/port.c
index 96608dbb9314..308fd279669e 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/port.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/port.c
@@ -569,6 +569,9 @@ int mlx5e_set_fec_mode(struct mlx5_core_dev *dev, u16 fec_policy)
if (fec_policy >= (1 << MLX5E_FEC_LLRS_272_257_1) && !fec_50g_per_lane)
return -EOPNOTSUPP;
+ if (fec_policy && !mlx5e_fec_in_caps(dev, fec_policy))
+ return -EOPNOTSUPP;
+
MLX5_SET(pplm_reg, in, local_port, 1);
err = mlx5_core_access_reg(dev, in, sz, out, sz, MLX5_REG_PPLM, 0, 0);
if (err)
--
2.26.2
next prev parent reply other threads:[~2020-10-01 2:05 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-01 2:05 [pull request][net 00/15] mlx5 fixes 2020-09-30 saeed
2020-10-01 2:05 ` [net 01/15] net/mlx5: Don't allow health work when device is uninitialized saeed
2020-10-01 19:21 ` David Miller
2020-10-01 19:41 ` Saeed Mahameed
2020-10-01 2:05 ` [net 02/15] net/mlx5: Fix a race when moving command interface to polling mode saeed
2020-10-01 2:05 ` [net 03/15] net/mlx5: Avoid possible free of command entry while timeout comp handler saeed
2020-10-01 2:05 ` [net 04/15] net/mlx5: poll cmd EQ in case of command timeout saeed
2020-10-01 2:05 ` [net 05/15] net/mlx5: Add retry mechanism to the command entry index allocation saeed
2020-10-01 2:05 ` [net 06/15] net/mlx5: cmdif, Avoid skipping reclaim pages if FW is not accessible saeed
2020-10-01 2:05 ` [net 07/15] net/mlx5: Fix request_irqs error flow saeed
2020-10-01 2:05 ` [net 08/15] net/mlx5e: Fix error path for RQ alloc saeed
2020-10-01 2:05 ` [net 09/15] net/mlx5e: Add resiliency in Striding RQ mode for packets larger than MTU saeed
2020-10-01 2:05 ` [net 10/15] net/mlx5e: CT, Fix coverity issue saeed
2020-10-01 2:05 ` [net 11/15] net/mlx5e: Fix driver's declaration to support GRE offload saeed
2020-10-01 2:05 ` saeed [this message]
2020-10-01 2:05 ` [net 13/15] net/mlx5e: Fix VLAN cleanup flow saeed
2020-10-01 2:05 ` [net 14/15] net/mlx5e: Fix VLAN create flow saeed
2020-10-01 2:05 ` [net 15/15] net/mlx5e: Fix race condition on nhe->n pointer in neigh update saeed
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