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net/mlx5: Use max_num_eqs_24b when setting max_io_eqs

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Due a bug in the device max_num_eqs doesn't always reflect a written
value. As a result, setting max_io_eqs may not work but appear
successful. Instead write max_num_eqs_24b, which reflects correct
value.

Fixes: 93197c7c50 ("mlx5/core: Support max_io_eqs for a function")
Signed-off-by: Daniel Jurgens <danielj@nvidia.com>
Reviewed-by: Parav Pandit <parav@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Daniel Jurgens 2024-06-27 21:02:36 +03:00 committed by David S. Miller
parent 29c6a562bf
commit 5dbf647367
1 changed files with 17 additions and 5 deletions
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22
drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c
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@ -4600,20 +4600,26 @@ mlx5_devlink_port_fn_max_io_eqs_get(struct devlink_port *port, u32 *max_io_eqs,
return -EOPNOTSUPP;
}
if (!MLX5_CAP_GEN_2(esw->dev, max_num_eqs_24b)) {
NL_SET_ERR_MSG_MOD(extack,
"Device doesn't support getting the max number of EQs");
return -EOPNOTSUPP;
}
query_ctx = kzalloc(query_out_sz, GFP_KERNEL);
if (!query_ctx)
return -ENOMEM;
mutex_lock(&esw->state_lock);
err = mlx5_vport_get_other_func_cap(esw->dev, vport_num, query_ctx,
MLX5_CAP_GENERAL);
MLX5_CAP_GENERAL_2);
if (err) {
NL_SET_ERR_MSG_MOD(extack, "Failed getting HCA caps");
goto out;
}
hca_caps = MLX5_ADDR_OF(query_hca_cap_out, query_ctx, capability);
max_eqs = MLX5_GET(cmd_hca_cap, hca_caps, max_num_eqs);
max_eqs = MLX5_GET(cmd_hca_cap_2, hca_caps, max_num_eqs_24b);
if (max_eqs < MLX5_ESW_MAX_CTRL_EQS)
*max_io_eqs = 0;
else
@ -4644,6 +4650,12 @@ mlx5_devlink_port_fn_max_io_eqs_set(struct devlink_port *port, u32 max_io_eqs,
return -EOPNOTSUPP;
}
if (!MLX5_CAP_GEN_2(esw->dev, max_num_eqs_24b)) {
NL_SET_ERR_MSG_MOD(extack,
"Device doesn't support changing the max number of EQs");
return -EOPNOTSUPP;
}
if (check_add_overflow(max_io_eqs, MLX5_ESW_MAX_CTRL_EQS, &max_eqs)) {
NL_SET_ERR_MSG_MOD(extack, "Supplied value out of range");
return -EINVAL;
@ -4655,17 +4667,17 @@ mlx5_devlink_port_fn_max_io_eqs_set(struct devlink_port *port, u32 max_io_eqs,
mutex_lock(&esw->state_lock);
err = mlx5_vport_get_other_func_cap(esw->dev, vport_num, query_ctx,
MLX5_CAP_GENERAL);
MLX5_CAP_GENERAL_2);
if (err) {
NL_SET_ERR_MSG_MOD(extack, "Failed getting HCA caps");
goto out;
}
hca_caps = MLX5_ADDR_OF(query_hca_cap_out, query_ctx, capability);
MLX5_SET(cmd_hca_cap, hca_caps, max_num_eqs, max_eqs);
MLX5_SET(cmd_hca_cap_2, hca_caps, max_num_eqs_24b, max_eqs);
err = mlx5_vport_set_other_func_cap(esw->dev, hca_caps, vport_num,
MLX5_SET_HCA_CAP_OP_MOD_GENERAL_DEVICE);
MLX5_SET_HCA_CAP_OP_MOD_GENERAL_DEVICE2);
if (err)
NL_SET_ERR_MSG_MOD(extack, "Failed setting HCA caps");