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net/mlx5: SF, Extend SF table for additional SF id range

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Extended the SF table to cover additioanl SF id range of external
controller.

A user optionallly provides the external controller number when user
wants to create SF on the external controller.

An example on eswitch system:
$ devlink dev eswitch set pci/0033:01:00.0 mode switchdev

$ devlink port show
pci/0033:01:00.0/196607: type eth netdev enP51p1s0f0np0 flavour physical port 0 splittable false
pci/0033:01:00.0/131072: type eth netdev eth0 flavour pcipf controller 1 pfnum 0 external true splittable false
  function:
    hw_addr 00:00:00:00:00:00

$ devlink port add pci/0033:01:00.0 flavour pcisf pfnum 0 sfnum 77 controller 1
pci/0033:01:00.0/163840: type eth netdev eth1 flavour pcisf controller 1 pfnum 0 sfnum 77 external true splittable false
  function:
    hw_addr 00:00:00:00:00:00 state inactive opstate detached

Signed-off-by: Parav Pandit <parav@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
This commit is contained in:
Parav Pandit 2021-03-08 13:19:53 +02:00 committed by Saeed Mahameed
parent a3088f87d9
commit f1b9acd3a5
6 changed files with 142 additions and 55 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/net/ethernet/mellanox/mlx5/core/esw/devlink_port.c
View File

@ -123,7 +123,7 @@ struct devlink_port *mlx5_esw_offloads_devlink_port(struct mlx5_eswitch *esw, u1
}
int mlx5_esw_devlink_sf_port_register(struct mlx5_eswitch *esw, struct devlink_port *dl_port,
u16 vport_num, u32 sfnum)
u16 vport_num, u32 controller, u32 sfnum)
{
struct mlx5_core_dev *dev = esw->dev;
struct netdev_phys_item_id ppid = {};
@ -141,7 +141,7 @@ int mlx5_esw_devlink_sf_port_register(struct mlx5_eswitch *esw, struct devlink_p
mlx5_esw_get_port_parent_id(dev, &ppid);
memcpy(dl_port->attrs.switch_id.id, &ppid.id[0], ppid.id_len);
dl_port->attrs.switch_id.id_len = ppid.id_len;
devlink_port_attrs_pci_sf_set(dl_port, 0, pfnum, sfnum, false);
devlink_port_attrs_pci_sf_set(dl_port, controller, pfnum, sfnum, !!controller);
devlink = priv_to_devlink(dev);
dl_port_index = mlx5_esw_vport_to_devlink_port_index(dev, vport_num);
err = devlink_port_register(devlink, dl_port, dl_port_index);

6
drivers/net/ethernet/mellanox/mlx5/core/eswitch.h
View File

@ -662,11 +662,11 @@ void mlx5_esw_offloads_devlink_port_unregister(struct mlx5_eswitch *esw, u16 vpo
struct devlink_port *mlx5_esw_offloads_devlink_port(struct mlx5_eswitch *esw, u16 vport_num);
int mlx5_esw_devlink_sf_port_register(struct mlx5_eswitch *esw, struct devlink_port *dl_port,
u16 vport_num, u32 sfnum);
u16 vport_num, u32 controller, u32 sfnum);
void mlx5_esw_devlink_sf_port_unregister(struct mlx5_eswitch *esw, u16 vport_num);
int mlx5_esw_offloads_sf_vport_enable(struct mlx5_eswitch *esw, struct devlink_port *dl_port,
u16 vport_num, u32 sfnum);
u16 vport_num, u32 controller, u32 sfnum);
void mlx5_esw_offloads_sf_vport_disable(struct mlx5_eswitch *esw, u16 vport_num);
int mlx5_esw_sf_max_hpf_functions(struct mlx5_core_dev *dev, u16 *max_sfs, u16 *sf_base_id);
@ -695,6 +695,8 @@ void mlx5_esw_unlock(struct mlx5_eswitch *esw);
void esw_vport_change_handle_locked(struct mlx5_vport *vport);
bool mlx5_esw_offloads_controller_valid(const struct mlx5_eswitch *esw, u32 controller);
#else /* CONFIG_MLX5_ESWITCH */
/* eswitch API stubs */
static inline int mlx5_eswitch_init(struct mlx5_core_dev *dev) { return 0; }

17
drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c
View File

@ -2747,6 +2747,19 @@ static int mlx5_esw_host_number_init(struct mlx5_eswitch *esw)
return 0;
}
bool mlx5_esw_offloads_controller_valid(const struct mlx5_eswitch *esw, u32 controller)
{
/* Local controller is always valid */
if (controller == 0)
return true;
if (!mlx5_core_is_ecpf_esw_manager(esw->dev))
return false;
/* External host number starts with zero in device */
return (controller == esw->offloads.host_number + 1);
}
int esw_offloads_enable(struct mlx5_eswitch *esw)
{
struct mapping_ctx *reg_c0_obj_pool;
@ -3295,7 +3308,7 @@ u32 mlx5_eswitch_get_vport_metadata_for_match(struct mlx5_eswitch *esw,
EXPORT_SYMBOL(mlx5_eswitch_get_vport_metadata_for_match);
int mlx5_esw_offloads_sf_vport_enable(struct mlx5_eswitch *esw, struct devlink_port *dl_port,
u16 vport_num, u32 sfnum)
u16 vport_num, u32 controller, u32 sfnum)
{
int err;
@ -3303,7 +3316,7 @@ int mlx5_esw_offloads_sf_vport_enable(struct mlx5_eswitch *esw, struct devlink_p
if (err)
return err;
err = mlx5_esw_devlink_sf_port_register(esw, dl_port, vport_num, sfnum);
err = mlx5_esw_devlink_sf_port_register(esw, dl_port, vport_num, controller, sfnum);
if (err)
goto devlink_err;

29
drivers/net/ethernet/mellanox/mlx5/core/sf/devlink.c
View File

@ -12,6 +12,7 @@
struct mlx5_sf {
struct devlink_port dl_port;
unsigned int port_index;
u32 controller;
u16 id;
u16 hw_fn_id;
u16 hw_state;
@ -58,7 +59,8 @@ static void mlx5_sf_id_erase(struct mlx5_sf_table *table, struct mlx5_sf *sf)
}
static struct mlx5_sf *
mlx5_sf_alloc(struct mlx5_sf_table *table, u32 sfnum, struct netlink_ext_ack *extack)
mlx5_sf_alloc(struct mlx5_sf_table *table, struct mlx5_eswitch *esw,
u32 controller, u32 sfnum, struct netlink_ext_ack *extack)
{
unsigned int dl_port_index;
struct mlx5_sf *sf;
@ -66,7 +68,12 @@ mlx5_sf_alloc(struct mlx5_sf_table *table, u32 sfnum, struct netlink_ext_ack *ex
int id_err;
int err;
id_err = mlx5_sf_hw_table_sf_alloc(table->dev, sfnum);
if (!mlx5_esw_offloads_controller_valid(esw, controller)) {
NL_SET_ERR_MSG_MOD(extack, "Invalid controller number");
return ERR_PTR(-EINVAL);
}
id_err = mlx5_sf_hw_table_sf_alloc(table->dev, controller, sfnum);
if (id_err < 0) {
err = id_err;
goto id_err;
@ -78,11 +85,12 @@ mlx5_sf_alloc(struct mlx5_sf_table *table, u32 sfnum, struct netlink_ext_ack *ex
goto alloc_err;
}
sf->id = id_err;
hw_fn_id = mlx5_sf_sw_to_hw_id(table->dev, sf->id);
hw_fn_id = mlx5_sf_sw_to_hw_id(table->dev, controller, sf->id);
dl_port_index = mlx5_esw_vport_to_devlink_port_index(table->dev, hw_fn_id);
sf->port_index = dl_port_index;
sf->hw_fn_id = hw_fn_id;
sf->hw_state = MLX5_VHCA_STATE_ALLOCATED;
sf->controller = controller;
err = mlx5_sf_id_insert(table, sf);
if (err)
@ -93,7 +101,7 @@ mlx5_sf_alloc(struct mlx5_sf_table *table, u32 sfnum, struct netlink_ext_ack *ex
insert_err:
kfree(sf);
alloc_err:
mlx5_sf_hw_table_sf_free(table->dev, id_err);
mlx5_sf_hw_table_sf_free(table->dev, controller, id_err);
id_err:
if (err == -EEXIST)
NL_SET_ERR_MSG_MOD(extack, "SF already exist. Choose different sfnum");
@ -103,7 +111,7 @@ id_err:
static void mlx5_sf_free(struct mlx5_sf_table *table, struct mlx5_sf *sf)
{
mlx5_sf_id_erase(table, sf);
mlx5_sf_hw_table_sf_free(table->dev, sf->id);
mlx5_sf_hw_table_sf_free(table->dev, sf->controller, sf->id);
kfree(sf);
}
@ -272,12 +280,12 @@ static int mlx5_sf_add(struct mlx5_core_dev *dev, struct mlx5_sf_table *table,
struct mlx5_sf *sf;
int err;
sf = mlx5_sf_alloc(table, new_attr->sfnum, extack);
sf = mlx5_sf_alloc(table, esw, new_attr->controller, new_attr->sfnum, extack);
if (IS_ERR(sf))
return PTR_ERR(sf);
err = mlx5_esw_offloads_sf_vport_enable(esw, &sf->dl_port, sf->hw_fn_id,
new_attr->sfnum);
new_attr->controller, new_attr->sfnum);
if (err)
goto esw_err;
*new_port_index = sf->port_index;
@ -306,7 +314,8 @@ mlx5_sf_new_check_attr(struct mlx5_core_dev *dev, const struct devlink_port_new_
"User must provide unique sfnum. Driver does not support auto assignment");
return -EOPNOTSUPP;
}
if (new_attr->controller_valid && new_attr->controller) {
if (new_attr->controller_valid && new_attr->controller &&
!mlx5_core_is_ecpf_esw_manager(dev)) {
NL_SET_ERR_MSG_MOD(extack, "External controller is unsupported");
return -EOPNOTSUPP;
}
@ -352,10 +361,10 @@ static void mlx5_sf_dealloc(struct mlx5_sf_table *table, struct mlx5_sf *sf)
* firmware gives confirmation that it is detached by the driver.
*/
mlx5_cmd_sf_disable_hca(table->dev, sf->hw_fn_id);
mlx5_sf_hw_table_sf_deferred_free(table->dev, sf->id);
mlx5_sf_hw_table_sf_deferred_free(table->dev, sf->controller, sf->id);
kfree(sf);
} else {
mlx5_sf_hw_table_sf_deferred_free(table->dev, sf->id);
mlx5_sf_hw_table_sf_deferred_free(table->dev, sf->controller, sf->id);
kfree(sf);
}
}

133
drivers/net/ethernet/mellanox/mlx5/core/sf/hw_table.c
View File

@ -8,6 +8,7 @@
#include "ecpf.h"
#include "vhca_event.h"
#include "mlx5_core.h"
#include "eswitch.h"
struct mlx5_sf_hw {
u32 usr_sfnum;
@ -23,6 +24,7 @@ struct mlx5_sf_hwc_table {
enum mlx5_sf_hwc_index {
MLX5_SF_HWC_LOCAL,
MLX5_SF_HWC_EXTERNAL,
MLX5_SF_HWC_MAX,
};
@ -33,26 +35,50 @@ struct mlx5_sf_hw_table {
struct mlx5_sf_hwc_table hwc[MLX5_SF_HWC_MAX];
};
u16 mlx5_sf_sw_to_hw_id(const struct mlx5_core_dev *dev, u16 sw_id)
static struct mlx5_sf_hwc_table *
mlx5_sf_controller_to_hwc(struct mlx5_core_dev *dev, u32 controller)
{
struct mlx5_sf_hwc_table *hwc = &dev->priv.sf_hw_table->hwc[MLX5_SF_HWC_LOCAL];
int idx = !!controller;
return &dev->priv.sf_hw_table->hwc[idx];
}
u16 mlx5_sf_sw_to_hw_id(struct mlx5_core_dev *dev, u32 controller, u16 sw_id)
{
struct mlx5_sf_hwc_table *hwc;
hwc = mlx5_sf_controller_to_hwc(dev, controller);
return hwc->start_fn_id + sw_id;
}
static u16 mlx5_sf_hw_to_sw_id(const struct mlx5_core_dev *dev, u16 hw_id)
static u16 mlx5_sf_hw_to_sw_id(struct mlx5_sf_hwc_table *hwc, u16 hw_id)
{
struct mlx5_sf_hwc_table *hwc = &dev->priv.sf_hw_table->hwc[MLX5_SF_HWC_LOCAL];
return hw_id - hwc->start_fn_id;
}
static int mlx5_sf_hw_table_id_alloc(struct mlx5_sf_hw_table *table, u32 usr_sfnum)
static struct mlx5_sf_hwc_table *
mlx5_sf_table_fn_to_hwc(struct mlx5_sf_hw_table *table, u16 fn_id)
{
int i;
for (i = 0; i < ARRAY_SIZE(table->hwc); i++) {
if (table->hwc[i].max_fn &&
fn_id >= table->hwc[i].start_fn_id &&
fn_id < (table->hwc[i].start_fn_id + table->hwc[i].max_fn))
return &table->hwc[i];
}
return NULL;
}
static int mlx5_sf_hw_table_id_alloc(struct mlx5_sf_hw_table *table, u32 controller,
u32 usr_sfnum)
{
struct mlx5_sf_hwc_table *hwc;
int i;
hwc = &table->hwc[MLX5_SF_HWC_LOCAL];
hwc = mlx5_sf_controller_to_hwc(table->dev, controller);
if (!hwc->sfs)
return -ENOSPC;
/* Check if sf with same sfnum already exists or not. */
for (i = 0; i < hwc->max_fn; i++) {
@ -70,15 +96,16 @@ static int mlx5_sf_hw_table_id_alloc(struct mlx5_sf_hw_table *table, u32 usr_sfn
return -ENOSPC;
}
static void mlx5_sf_hw_table_id_free(struct mlx5_sf_hw_table *table, int id)
static void mlx5_sf_hw_table_id_free(struct mlx5_sf_hw_table *table, u32 controller, int id)
{
struct mlx5_sf_hwc_table *hwc = &table->hwc[MLX5_SF_HWC_LOCAL];
struct mlx5_sf_hwc_table *hwc;
hwc = mlx5_sf_controller_to_hwc(table->dev, controller);
hwc->sfs[id].allocated = false;
hwc->sfs[id].pending_delete = false;
}
int mlx5_sf_hw_table_sf_alloc(struct mlx5_core_dev *dev, u32 usr_sfnum)
int mlx5_sf_hw_table_sf_alloc(struct mlx5_core_dev *dev, u32 controller, u32 usr_sfnum)
{
struct mlx5_sf_hw_table *table = dev->priv.sf_hw_table;
u16 hw_fn_id;
@ -89,13 +116,13 @@ int mlx5_sf_hw_table_sf_alloc(struct mlx5_core_dev *dev, u32 usr_sfnum)
return -EOPNOTSUPP;
mutex_lock(&table->table_lock);
sw_id = mlx5_sf_hw_table_id_alloc(table, usr_sfnum);
sw_id = mlx5_sf_hw_table_id_alloc(table, controller, usr_sfnum);
if (sw_id < 0) {
err = sw_id;
goto exist_err;
}
hw_fn_id = mlx5_sf_sw_to_hw_id(dev, sw_id);
hw_fn_id = mlx5_sf_sw_to_hw_id(dev, controller, sw_id);
err = mlx5_cmd_alloc_sf(dev, hw_fn_id);
if (err)
goto err;
@ -104,38 +131,48 @@ int mlx5_sf_hw_table_sf_alloc(struct mlx5_core_dev *dev, u32 usr_sfnum)
if (err)
goto vhca_err;
if (controller) {
/* If this SF is for external controller, SF manager
* needs to arm firmware to receive the events.
*/
err = mlx5_vhca_event_arm(dev, hw_fn_id);
if (err)
goto vhca_err;
}
mutex_unlock(&table->table_lock);
return sw_id;
vhca_err:
mlx5_cmd_dealloc_sf(dev, hw_fn_id);
err:
mlx5_sf_hw_table_id_free(table, sw_id);
mlx5_sf_hw_table_id_free(table, controller, sw_id);
exist_err:
mutex_unlock(&table->table_lock);
return err;
}
static void _mlx5_sf_hw_table_sf_free(struct mlx5_core_dev *dev, u16 id)
void mlx5_sf_hw_table_sf_free(struct mlx5_core_dev *dev, u32 controller, u16 id)
{
struct mlx5_sf_hw_table *table = dev->priv.sf_hw_table;
u16 hw_fn_id;
hw_fn_id = mlx5_sf_sw_to_hw_id(dev, id);
mlx5_cmd_dealloc_sf(dev, hw_fn_id);
mlx5_sf_hw_table_id_free(table, id);
}
void mlx5_sf_hw_table_sf_free(struct mlx5_core_dev *dev, u16 id)
{
struct mlx5_sf_hw_table *table = dev->priv.sf_hw_table;
mutex_lock(&table->table_lock);
_mlx5_sf_hw_table_sf_free(dev, id);
hw_fn_id = mlx5_sf_sw_to_hw_id(dev, controller, id);
mlx5_cmd_dealloc_sf(dev, hw_fn_id);
mlx5_sf_hw_table_id_free(table, controller, id);
mutex_unlock(&table->table_lock);
}
void mlx5_sf_hw_table_sf_deferred_free(struct mlx5_core_dev *dev, u16 id)
static void mlx5_sf_hw_table_hwc_sf_free(struct mlx5_core_dev *dev,
struct mlx5_sf_hwc_table *hwc, int idx)
{
mlx5_cmd_dealloc_sf(dev, hwc->start_fn_id + idx);
hwc->sfs[idx].allocated = false;
hwc->sfs[idx].pending_delete = false;
}
void mlx5_sf_hw_table_sf_deferred_free(struct mlx5_core_dev *dev, u32 controller, u16 id)
{
struct mlx5_sf_hw_table *table = dev->priv.sf_hw_table;
u32 out[MLX5_ST_SZ_DW(query_vhca_state_out)] = {};
@ -144,8 +181,8 @@ void mlx5_sf_hw_table_sf_deferred_free(struct mlx5_core_dev *dev, u16 id)
u8 state;
int err;
hw_fn_id = mlx5_sf_sw_to_hw_id(dev, id);
hwc = &table->hwc[MLX5_SF_HWC_LOCAL];
hw_fn_id = mlx5_sf_sw_to_hw_id(dev, controller, id);
hwc = mlx5_sf_controller_to_hwc(dev, controller);
mutex_lock(&table->table_lock);
err = mlx5_cmd_query_vhca_state(dev, hw_fn_id, out, sizeof(out));
if (err)
@ -168,12 +205,13 @@ static void mlx5_sf_hw_table_hwc_dealloc_all(struct mlx5_core_dev *dev,
for (i = 0; i < hwc->max_fn; i++) {
if (hwc->sfs[i].allocated)
_mlx5_sf_hw_table_sf_free(dev, i);
mlx5_sf_hw_table_hwc_sf_free(dev, hwc, i);
}
}
static void mlx5_sf_hw_table_dealloc_all(struct mlx5_sf_hw_table *table)
{
mlx5_sf_hw_table_hwc_dealloc_all(table->dev, &table->hwc[MLX5_SF_HWC_EXTERNAL]);
mlx5_sf_hw_table_hwc_dealloc_all(table->dev, &table->hwc[MLX5_SF_HWC_LOCAL]);
}
@ -181,6 +219,9 @@ static int mlx5_sf_hw_table_hwc_init(struct mlx5_sf_hwc_table *hwc, u16 max_fn,
{
struct mlx5_sf_hw *sfs;
if (!max_fn)
return 0;
sfs = kcalloc(max_fn, sizeof(*sfs), GFP_KERNEL);
if (!sfs)
return -ENOMEM;
@ -199,14 +240,25 @@ static void mlx5_sf_hw_table_hwc_cleanup(struct mlx5_sf_hwc_table *hwc)
int mlx5_sf_hw_table_init(struct mlx5_core_dev *dev)
{
struct mlx5_sf_hw_table *table;
u16 max_ext_fn = 0;
u16 ext_base_id;
u16 max_fn = 0;
u16 base_id;
u16 max_fn;
int err;
if (!mlx5_sf_supported(dev) || !mlx5_vhca_event_supported(dev))
if (!mlx5_vhca_event_supported(dev))
return 0;
if (mlx5_sf_supported(dev))
max_fn = mlx5_sf_max_functions(dev);
err = mlx5_esw_sf_max_hpf_functions(dev, &max_ext_fn, &ext_base_id);
if (err)
return err;
if (!max_fn && !max_ext_fn)
return 0;
max_fn = mlx5_sf_max_functions(dev);
table = kzalloc(sizeof(*table), GFP_KERNEL);
if (!table)
return -ENOMEM;
@ -220,9 +272,16 @@ int mlx5_sf_hw_table_init(struct mlx5_core_dev *dev)
if (err)
goto table_err;
mlx5_core_dbg(dev, "SF HW table: max sfs = %d\n", max_fn);
err = mlx5_sf_hw_table_hwc_init(&table->hwc[MLX5_SF_HWC_EXTERNAL],
max_ext_fn, ext_base_id);
if (err)
goto ext_err;
mlx5_core_dbg(dev, "SF HW table: max sfs = %d, ext sfs = %d\n", max_fn, max_ext_fn);
return 0;
ext_err:
mlx5_sf_hw_table_hwc_cleanup(&table->hwc[MLX5_SF_HWC_LOCAL]);
table_err:
mutex_destroy(&table->table_lock);
kfree(table);
@ -237,6 +296,7 @@ void mlx5_sf_hw_table_cleanup(struct mlx5_core_dev *dev)
return;
mutex_destroy(&table->table_lock);
mlx5_sf_hw_table_hwc_cleanup(&table->hwc[MLX5_SF_HWC_EXTERNAL]);
mlx5_sf_hw_table_hwc_cleanup(&table->hwc[MLX5_SF_HWC_LOCAL]);
kfree(table);
}
@ -252,8 +312,11 @@ static int mlx5_sf_hw_vhca_event(struct notifier_block *nb, unsigned long opcode
if (event->new_vhca_state != MLX5_VHCA_STATE_ALLOCATED)
return 0;
hwc = &table->hwc[MLX5_SF_HWC_LOCAL];
sw_id = mlx5_sf_hw_to_sw_id(table->dev, event->function_id);
hwc = mlx5_sf_table_fn_to_hwc(table, event->function_id);
if (!hwc)
return 0;
sw_id = mlx5_sf_hw_to_sw_id(hwc, event->function_id);
sf_hw = &hwc->sfs[sw_id];
mutex_lock(&table->table_lock);
@ -261,7 +324,7 @@ static int mlx5_sf_hw_vhca_event(struct notifier_block *nb, unsigned long opcode
* Hence recycle the sf hardware id for reuse.
*/
if (sf_hw->allocated && sf_hw->pending_delete)
_mlx5_sf_hw_table_sf_free(table->dev, sw_id);
mlx5_sf_hw_table_hwc_sf_free(table->dev, hwc, sw_id);
mutex_unlock(&table->table_lock);
return 0;
}

8
drivers/net/ethernet/mellanox/mlx5/core/sf/priv.h
View File

@ -12,11 +12,11 @@ int mlx5_cmd_dealloc_sf(struct mlx5_core_dev *dev, u16 function_id);
int mlx5_cmd_sf_enable_hca(struct mlx5_core_dev *dev, u16 func_id);
int mlx5_cmd_sf_disable_hca(struct mlx5_core_dev *dev, u16 func_id);
u16 mlx5_sf_sw_to_hw_id(const struct mlx5_core_dev *dev, u16 sw_id);
u16 mlx5_sf_sw_to_hw_id(struct mlx5_core_dev *dev, u32 controller, u16 sw_id);
int mlx5_sf_hw_table_sf_alloc(struct mlx5_core_dev *dev, u32 usr_sfnum);
void mlx5_sf_hw_table_sf_free(struct mlx5_core_dev *dev, u16 id);
void mlx5_sf_hw_table_sf_deferred_free(struct mlx5_core_dev *dev, u16 id);
int mlx5_sf_hw_table_sf_alloc(struct mlx5_core_dev *dev, u32 controller, u32 usr_sfnum);
void mlx5_sf_hw_table_sf_free(struct mlx5_core_dev *dev, u32 controller, u16 id);
void mlx5_sf_hw_table_sf_deferred_free(struct mlx5_core_dev *dev, u32 controller, u16 id);
bool mlx5_sf_hw_table_supported(const struct mlx5_core_dev *dev);
#endif