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net/mlx5e: Do not update SBCM when prio2buffer command is invalid

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The shared buffer pools configuration which are stored in the SBCM
register are updated when the user changes the prio2buffer mapping.

However, in case the user desired prio2buffer change is invalid,
which can occur due to mapping a lossless priority to a not large enough
buffer, the SBCM update should not be performed, as the user command is
failed.

Thus, Perform the SBCM update only after xoff threshold calculation is
performed and the user prio2buffer mapping is validated.

Fixes: a440030d89 ("net/mlx5e: Update shared buffer along with device buffer changes")
Signed-off-by: Maher Sanalla <msanalla@nvidia.com>
Reviewed-by: Moshe Shemesh <moshe@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
This commit is contained in:
Maher Sanalla
2023-05-09 17:56:01 +03:00
committed by Saeed Mahameed
parent 81fe2be062
commit 623efc4cbd
1 changed files with 2 additions and 2 deletions
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4
drivers/net/ethernet/mellanox/mlx5/core/en/port_buffer.c
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@@ -442,11 +442,11 @@ static int update_buffer_lossy(struct mlx5_core_dev *mdev,
}
if (changed) {
err = port_update_pool_cfg(mdev, port_buffer);
err = update_xoff_threshold(port_buffer, xoff, max_mtu, port_buff_cell_sz);
if (err)
return err;
err = update_xoff_threshold(port_buffer, xoff, max_mtu, port_buff_cell_sz);
err = port_update_pool_cfg(mdev, port_buffer);
if (err)
return err;