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net: devlink: split reload op into two 

In order to properly implement failure indication during reload,
split the reload op into two ops, one for down phase and one for
up phase.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jiri Pirko 2019-09-12 10:49:45 +02:00 committed by David S. Miller
parent 35c7ff349a
commit 97691069dc
5 changed files with 58 additions and 18 deletions
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23
drivers/net/ethernet/mellanox/mlx4/main.c
View File

@ -3935,17 +3935,27 @@ static void mlx4_restart_one_down(struct pci_dev *pdev);
static int mlx4_restart_one_up(struct pci_dev *pdev, bool reload,
struct devlink *devlink);
static int mlx4_devlink_reload(struct devlink *devlink,
struct netlink_ext_ack *extack)
static int mlx4_devlink_reload_down(struct devlink *devlink,
struct netlink_ext_ack *extack)
{
struct mlx4_priv *priv = devlink_priv(devlink);
struct mlx4_dev *dev = &priv->dev;
struct mlx4_dev_persistent *persist = dev->persist;
if (persist->num_vfs)
mlx4_warn(persist->dev, "Reload performed on PF, will cause reset on operating Virtual Functions\n");
mlx4_restart_one_down(persist->pdev);
return 0;
}
static int mlx4_devlink_reload_up(struct devlink *devlink,
struct netlink_ext_ack *extack)
{
struct mlx4_priv *priv = devlink_priv(devlink);
struct mlx4_dev *dev = &priv->dev;
struct mlx4_dev_persistent *persist = dev->persist;
int err;
if (persist->num_vfs)
mlx4_warn(persist->dev, "Reload performed on PF, will cause reset on operating Virtual Functions\n");
mlx4_restart_one_down(persist->pdev);
err = mlx4_restart_one_up(persist->pdev, true, devlink);
if (err)
mlx4_err(persist->dev, "mlx4_restart_one_up failed, ret=%d\n",
@ -3956,7 +3966,8 @@ static int mlx4_devlink_reload(struct devlink *devlink,
static const struct devlink_ops mlx4_devlink_ops = {
.port_type_set = mlx4_devlink_port_type_set,
.reload = mlx4_devlink_reload,
.reload_down = mlx4_devlink_reload_down,
.reload_up = mlx4_devlink_reload_up,
};
static int mlx4_init_one(struct pci_dev *pdev, const struct pci_device_id *id)

19
drivers/net/ethernet/mellanox/mlxsw/core.c
View File

@ -984,16 +984,26 @@ mlxsw_devlink_info_get(struct devlink *devlink, struct devlink_info_req *req,
return 0;
}
static int mlxsw_devlink_core_bus_device_reload(struct devlink *devlink,
struct netlink_ext_ack *extack)
static int
mlxsw_devlink_core_bus_device_reload_down(struct devlink *devlink,
struct netlink_ext_ack *extack)
{
struct mlxsw_core *mlxsw_core = devlink_priv(devlink);
int err;
if (!(mlxsw_core->bus->features & MLXSW_BUS_F_RESET))
return -EOPNOTSUPP;
mlxsw_core_bus_device_unregister(mlxsw_core, true);
return 0;
}
static int
mlxsw_devlink_core_bus_device_reload_up(struct devlink *devlink,
struct netlink_ext_ack *extack)
{
struct mlxsw_core *mlxsw_core = devlink_priv(devlink);
int err;
err = mlxsw_core_bus_device_register(mlxsw_core->bus_info,
mlxsw_core->bus,
mlxsw_core->bus_priv, true,
@ -1066,7 +1076,8 @@ mlxsw_devlink_trap_group_init(struct devlink *devlink,
}
static const struct devlink_ops mlxsw_devlink_ops = {
.reload = mlxsw_devlink_core_bus_device_reload,
.reload_down = mlxsw_devlink_core_bus_device_reload_down,
.reload_up = mlxsw_devlink_core_bus_device_reload_up,
.port_type_set = mlxsw_devlink_port_type_set,
.port_split = mlxsw_devlink_port_split,
.port_unsplit = mlxsw_devlink_port_unsplit,

13
drivers/net/netdevsim/dev.c
View File

@ -521,8 +521,14 @@ static void nsim_dev_traps_exit(struct devlink *devlink)
kfree(nsim_dev->trap_data);
}
static int nsim_dev_reload(struct devlink *devlink,
struct netlink_ext_ack *extack)
static int nsim_dev_reload_down(struct devlink *devlink,
struct netlink_ext_ack *extack)
{
return 0;
}
static int nsim_dev_reload_up(struct devlink *devlink,
struct netlink_ext_ack *extack)
{
enum nsim_resource_id res_ids[] = {
NSIM_RESOURCE_IPV4_FIB, NSIM_RESOURCE_IPV4_FIB_RULES,
@ -638,7 +644,8 @@ nsim_dev_devlink_trap_action_set(struct devlink *devlink,
}
static const struct devlink_ops nsim_dev_devlink_ops = {
.reload = nsim_dev_reload,
.reload_down = nsim_dev_reload_down,
.reload_up = nsim_dev_reload_up,
.flash_update = nsim_dev_flash_update,
.trap_init = nsim_dev_devlink_trap_init,
.trap_action_set = nsim_dev_devlink_trap_action_set,

5
include/net/devlink.h
View File

@ -642,7 +642,10 @@ enum devlink_trap_group_generic_id {
}
struct devlink_ops {
int (*reload)(struct devlink *devlink, struct netlink_ext_ack *extack);
int (*reload_down)(struct devlink *devlink,
struct netlink_ext_ack *extack);
int (*reload_up)(struct devlink *devlink,
struct netlink_ext_ack *extack);
int (*port_type_set)(struct devlink_port *devlink_port,
enum devlink_port_type port_type);
int (*port_split)(struct devlink *devlink, unsigned int port_index,

16
net/core/devlink.c
View File

@ -2672,12 +2672,17 @@ devlink_resources_validate(struct devlink *devlink,
return err;
}
static bool devlink_reload_supported(struct devlink *devlink)
{
return devlink->ops->reload_down && devlink->ops->reload_up;
}
static int devlink_nl_cmd_reload(struct sk_buff *skb, struct genl_info *info)
{
struct devlink *devlink = info->user_ptr[0];
int err;
if (!devlink->ops->reload)
if (!devlink_reload_supported(devlink))
return -EOPNOTSUPP;
err = devlink_resources_validate(devlink, NULL, info);
@ -2685,7 +2690,10 @@ static int devlink_nl_cmd_reload(struct sk_buff *skb, struct genl_info *info)
NL_SET_ERR_MSG_MOD(info->extack, "resources size validation failed");
return err;
}
return devlink->ops->reload(devlink, info->extack);
err = devlink->ops->reload_down(devlink, info->extack);
if (err)
return err;
return devlink->ops->reload_up(devlink, info->extack);
}
static int devlink_nl_flash_update_fill(struct sk_buff *msg,
@ -7150,7 +7158,7 @@ __devlink_param_driverinit_value_set(struct devlink *devlink,
int devlink_param_driverinit_value_get(struct devlink *devlink, u32 param_id,
union devlink_param_value *init_val)
{
if (!devlink->ops->reload)
if (!devlink_reload_supported(devlink))
return -EOPNOTSUPP;
return __devlink_param_driverinit_value_get(&devlink->param_list,
@ -7197,7 +7205,7 @@ int devlink_port_param_driverinit_value_get(struct devlink_port *devlink_port,
{
struct devlink *devlink = devlink_port->devlink;
if (!devlink->ops->reload)
if (!devlink_reload_supported(devlink))
return -EOPNOTSUPP;
return __devlink_param_driverinit_value_get(&devlink_port->param_list,