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net/mlx5: E-Switch, Handle representors creation in handler context 

Unified representors creation in esw_functions_changed context
handler. Emulate the esw_function_changed event for FW/HW that
does not support this event.

Signed-off-by: Vu Pham <vuhuong@mellanox.com>
Reviewed-by: Parav Pandit <parav@mellanox.com>
Reviewed-by: Bodong Wang <bodong@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
This commit is contained in:
Vu Pham 2019-06-10 23:38:16 +00:00 committed by Saeed Mahameed
parent b8a92577f4
commit ac35dcd6e4
2 changed files with 50 additions and 51 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
View File

@ -1720,7 +1720,6 @@ int mlx5_eswitch_enable_sriov(struct mlx5_eswitch *esw, int nvfs, int mode)
{
struct mlx5_vport *vport;
int total_nvports = 0;
u16 vf_nvports = 0;
int err;
int i, enabled_events;
@ -1739,15 +1738,10 @@ int mlx5_eswitch_enable_sriov(struct mlx5_eswitch *esw, int nvfs, int mode)
esw_info(esw->dev, "E-Switch enable SRIOV: nvfs(%d) mode (%d)\n", nvfs, mode);
if (mode == SRIOV_OFFLOADS) {
if (mlx5_core_is_ecpf_esw_manager(esw->dev)) {
err = mlx5_esw_query_functions(esw->dev, &vf_nvports);
if (err)
return err;
if (mlx5_core_is_ecpf_esw_manager(esw->dev))
total_nvports = esw->total_vports;
} else {
vf_nvports = nvfs;
else
total_nvports = nvfs + MLX5_SPECIAL_VPORTS(esw->dev);
}
}
esw->mode = mode;
@ -1761,7 +1755,7 @@ int mlx5_eswitch_enable_sriov(struct mlx5_eswitch *esw, int nvfs, int mode)
} else {
mlx5_reload_interface(esw->dev, MLX5_INTERFACE_PROTOCOL_ETH);
mlx5_reload_interface(esw->dev, MLX5_INTERFACE_PROTOCOL_IB);
err = esw_offloads_init(esw, vf_nvports, total_nvports);
err = esw_offloads_init(esw, nvfs, total_nvports);
}
if (err)

89
drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c
View File

@ -1436,34 +1436,13 @@ err_reps:
return err;
}
static int __load_reps_all_vport(struct mlx5_eswitch *esw, int nvports,
u8 rep_type)
{
int err;
/* Special vports must be loaded first. */
err = __load_reps_special_vport(esw, rep_type);
if (err)
return err;
err = __load_reps_vf_vport(esw, nvports, rep_type);
if (err)
goto err_vfs;
return 0;
err_vfs:
__unload_reps_special_vport(esw, rep_type);
return err;
}
static int esw_offloads_load_all_reps(struct mlx5_eswitch *esw, int nvports)
static int esw_offloads_load_special_vport(struct mlx5_eswitch *esw)
{
u8 rep_type = 0;
int err;
for (rep_type = 0; rep_type < NUM_REP_TYPES; rep_type++) {
err = __load_reps_all_vport(esw, nvports, rep_type);
err = __load_reps_special_vport(esw, rep_type);
if (err)
goto err_reps;
}
@ -1472,7 +1451,7 @@ static int esw_offloads_load_all_reps(struct mlx5_eswitch *esw, int nvports)
err_reps:
while (rep_type-- > 0)
__unload_reps_all_vport(esw, nvports, rep_type);
__unload_reps_special_vport(esw, rep_type);
return err;
}
@ -1811,6 +1790,21 @@ out:
kfree(host_work);
}
static void esw_emulate_event_handler(struct work_struct *work)
{
struct mlx5_host_work *host_work =
container_of(work, struct mlx5_host_work, work);
struct mlx5_eswitch *esw = host_work->esw;
int err;
if (esw->esw_funcs.num_vfs) {
err = esw_offloads_load_vf_reps(esw, esw->esw_funcs.num_vfs);
if (err)
esw_warn(esw->dev, "Load vf reps err=%d\n", err);
}
kfree(host_work);
}
static int esw_functions_changed_event(struct notifier_block *nb,
unsigned long type, void *data)
{
@ -1827,7 +1821,11 @@ static int esw_functions_changed_event(struct notifier_block *nb,
host_work->esw = esw;
INIT_WORK(&host_work->work, esw_functions_changed_event_handler);
if (mlx5_eswitch_is_funcs_handler(esw->dev))
INIT_WORK(&host_work->work,
esw_functions_changed_event_handler);
else
INIT_WORK(&host_work->work, esw_emulate_event_handler);
queue_work(esw->work_queue, &host_work->work);
return NOTIFY_OK;
@ -1836,13 +1834,14 @@ static int esw_functions_changed_event(struct notifier_block *nb,
static void esw_functions_changed_event_init(struct mlx5_eswitch *esw,
u16 vf_nvports)
{
if (!mlx5_eswitch_is_funcs_handler(esw->dev))
return;
MLX5_NB_INIT(&esw->esw_funcs.nb, esw_functions_changed_event,
ESW_FUNCTIONS_CHANGED);
mlx5_eq_notifier_register(esw->dev, &esw->esw_funcs.nb);
esw->esw_funcs.num_vfs = vf_nvports;
if (mlx5_eswitch_is_funcs_handler(esw->dev)) {
esw->esw_funcs.num_vfs = 0;
MLX5_NB_INIT(&esw->esw_funcs.nb, esw_functions_changed_event,
ESW_FUNCTIONS_CHANGED);
mlx5_eq_notifier_register(esw->dev, &esw->esw_funcs.nb);
} else {
esw->esw_funcs.num_vfs = vf_nvports;
}
}
static void esw_functions_changed_event_cleanup(struct mlx5_eswitch *esw)
@ -1863,7 +1862,11 @@ int esw_offloads_init(struct mlx5_eswitch *esw, int vf_nvports,
if (err)
return err;
err = esw_offloads_load_all_reps(esw, vf_nvports);
/* Only load special vports reps. VF reps will be loaded in
* context of functions_changed event handler through real
* or emulated event.
*/
err = esw_offloads_load_special_vport(esw);
if (err)
goto err_reps;
@ -1873,6 +1876,16 @@ int esw_offloads_init(struct mlx5_eswitch *esw, int vf_nvports,
mlx5_rdma_enable_roce(esw->dev);
/* Call esw_functions_changed event to load VF reps:
* 1. HW does not support the event then emulate it
* Or
* 2. The event was already notified when num_vfs changed
* and eswitch was in legacy mode
*/
esw_functions_changed_event(&esw->esw_funcs.nb.nb,
MLX5_EVENT_TYPE_ESW_FUNCTIONS_CHANGED,
NULL);
return 0;
err_reps:
@ -1901,18 +1914,10 @@ static int esw_offloads_stop(struct mlx5_eswitch *esw,
void esw_offloads_cleanup(struct mlx5_eswitch *esw)
{
u16 num_vfs;
esw_functions_changed_event_cleanup(esw);
if (mlx5_eswitch_is_funcs_handler(esw->dev))
num_vfs = esw->esw_funcs.num_vfs;
else
num_vfs = esw->dev->priv.sriov.num_vfs;
mlx5_rdma_disable_roce(esw->dev);
esw_offloads_devcom_cleanup(esw);
esw_offloads_unload_all_reps(esw, num_vfs);
esw_offloads_unload_all_reps(esw, esw->esw_funcs.num_vfs);
esw_offloads_steering_cleanup(esw);
}