diff options
| author |   Parav Pandit <parav@mellanox.com> | 2019-06-07 07:16:58 -0500 |
|---|---|---|
| committer |   Saeed Mahameed <saeedm@mellanox.com> | 2019-07-03 12:50:42 -0700 |
| commit | dd28087c14777a7f2571260d44394eb709a59368 (patch) | |
| tree | 0a619ef9ad17b0051017ac23b81c3e79e3b30824 /drivers/net/ethernet/mellanox/mlx5/core/sriov.c | |
| parent | net/mlx5: E-Switch prepare functions change handler to be modular (diff) | |
| download | linux-dev-dd28087c14777a7f2571260d44394eb709a59368.tar.xz linux-dev-dd28087c14777a7f2571260d44394eb709a59368.zip | |
net/mlx5: Refactor mlx5_esw_query_functions for modularity
Functions change event output data size changes when functions other
than VFs will be enabled in HCA CAP.
With current API, multiple callers needs to align, calculate accurate
size of the output data depending on number on non VF functions enabled
in the device.
Instead of duplicating such math at multiple places, refactor
mlx5_esw_query_functions() to return raw output allocated by itself.
Caller must free the allocated memory using kvfree() as described in the
function comment section.
This hides calcuation within mlx5_esw_query_functions() and provides
simpler API.
Signed-off-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Diffstat (limited to '')
| -rw-r--r-- | drivers/net/ethernet/mellanox/mlx5/core/sriov.c | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/sriov.c b/drivers/net/ethernet/mellanox/mlx5/core/sriov.c index 547d0be9025e..61fcfd8b39b4 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/sriov.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/sriov.c @@ -197,22 +197,25 @@ void mlx5_sriov_detach(struct mlx5_core_dev *dev) static u16 mlx5_get_max_vfs(struct mlx5_core_dev *dev) { - u32 out[MLX5_ST_SZ_DW(query_esw_functions_out)] = {}; u16 host_total_vfs; - int err; + const u32 *out; if (mlx5_core_is_ecpf_esw_manager(dev)) { - err = mlx5_esw_query_functions(dev, out, sizeof(out)); - host_total_vfs = MLX5_GET(query_esw_functions_out, out, - host_params_context.host_total_vfs); + out = mlx5_esw_query_functions(dev); /* Old FW doesn't support getting total_vfs from esw func * but supports getting it from pci_sriov. */ - if (!err && host_total_vfs) + if (IS_ERR(out)) + goto done; + host_total_vfs = MLX5_GET(query_esw_functions_out, out, + host_params_context.host_total_vfs); + kvfree(out); + if (host_total_vfs) return host_total_vfs; } +done: return pci_sriov_get_totalvfs(dev->pdev); } |