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net/mlx5: E-Switch prepare functions change handler to be modular 

Eswitch function change handler will service multiple type of events for
VFs and non VF functions update.
Hence, introduce and use the helper function
esw_vfs_changed_event_handler() for handling change in num VFs to improve
the code readability.

Signed-off-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
This commit is contained in:
Parav Pandit 2019-06-07 06:44:17 -05:00 committed by Saeed Mahameed
parent 2752b82316
commit 7e736f9ae3
1 changed files with 29 additions and 19 deletions
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46
drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c
View File

@ -2046,38 +2046,48 @@ static void esw_offloads_steering_cleanup(struct mlx5_eswitch *esw)
esw_destroy_offloads_acl_tables(esw); esw_destroy_offloads_acl_tables(esw);
} }
static void
esw_vfs_changed_event_handler(struct mlx5_eswitch *esw, const u32 *out)
{
bool host_pf_disabled;
u16 new_num_vfs;
new_num_vfs = MLX5_GET(query_esw_functions_out, out,
host_params_context.host_num_of_vfs);
host_pf_disabled = MLX5_GET(query_esw_functions_out, out,
host_params_context.host_pf_disabled);
if (new_num_vfs == esw->esw_funcs.num_vfs || host_pf_disabled)
return;
/* Number of VFs can only change from "0 to x" or "x to 0". */
if (esw->esw_funcs.num_vfs > 0) {
esw_offloads_unload_vf_reps(esw, esw->esw_funcs.num_vfs);
} else {
int err;
err = esw_offloads_load_vf_reps(esw, new_num_vfs);
if (err)
return;
}
esw->esw_funcs.num_vfs = new_num_vfs;
}
static void esw_functions_changed_event_handler(struct work_struct *work) static void esw_functions_changed_event_handler(struct work_struct *work)
{ {
u32 out[MLX5_ST_SZ_DW(query_esw_functions_out)] = {}; u32 out[MLX5_ST_SZ_DW(query_esw_functions_out)] = {};
struct mlx5_host_work *host_work; struct mlx5_host_work *host_work;
struct mlx5_eswitch *esw; struct mlx5_eswitch *esw;
bool host_pf_disabled;
u16 num_vfs = 0;
int err; int err;
host_work = container_of(work, struct mlx5_host_work, work); host_work = container_of(work, struct mlx5_host_work, work);
esw = host_work->esw; esw = host_work->esw;
err = mlx5_esw_query_functions(esw->dev, out, sizeof(out)); err = mlx5_esw_query_functions(esw->dev, out, sizeof(out));
num_vfs = MLX5_GET(query_esw_functions_out, out,
host_params_context.host_num_of_vfs);
host_pf_disabled = MLX5_GET(query_esw_functions_out, out,
host_params_context.host_pf_disabled);
if (err || host_pf_disabled || num_vfs == esw->esw_funcs.num_vfs)
goto out;
/* Number of VFs can only change from "0 to x" or "x to 0". */
if (esw->esw_funcs.num_vfs > 0) {
esw_offloads_unload_vf_reps(esw, esw->esw_funcs.num_vfs);
} else {
err = esw_offloads_load_vf_reps(esw, num_vfs);
if (err) if (err)
goto out; goto out;
}
esw->esw_funcs.num_vfs = num_vfs;
esw_vfs_changed_event_handler(esw, out);
out: out:
kfree(host_work); kfree(host_work);
} }