diff options
author | Jiri Pirko <jiri@nvidia.com> | 2023-01-18 18:21:08 +0300 |
---|---|---|
committer | Jakub Kicinski <kuba@kernel.org> | 2023-01-20 06:08:37 +0300 |
commit | dfdfd1305ddecb990566193f2ba8a11bccba4cde (patch) | |
tree | e3b65f5f1a722af8d83c4547c41ad4415829f2af | |
parent | 65a20c2eb96d698206846b27f9ac5ab05a24d569 (diff) | |
download | linux-dfdfd1305ddecb990566193f2ba8a11bccba4cde.tar.xz |
devlink: protect health reporter operation with instance lock
Similar to other devlink objects, protect the reporters list
by devlink instance lock. Alongside add unlocked versions
of health reporter create/destroy functions and use them in drivers
on call paths where the instance lock is held.
Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
-rw-r--r-- | drivers/net/ethernet/mellanox/mlxsw/core.c | 8 | ||||
-rw-r--r-- | drivers/net/netdevsim/health.c | 20 | ||||
-rw-r--r-- | include/net/devlink.h | 22 | ||||
-rw-r--r-- | net/devlink/leftover.c | 99 |
4 files changed, 110 insertions, 39 deletions
diff --git a/drivers/net/ethernet/mellanox/mlxsw/core.c b/drivers/net/ethernet/mellanox/mlxsw/core.c index a0a06e2eff82..33ef726e4d54 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/core.c +++ b/drivers/net/ethernet/mellanox/mlxsw/core.c @@ -2051,8 +2051,8 @@ static int mlxsw_core_health_init(struct mlxsw_core *mlxsw_core) if (!(mlxsw_core->bus->features & MLXSW_BUS_F_TXRX)) return 0; - fw_fatal = devlink_health_reporter_create(devlink, &mlxsw_core_health_fw_fatal_ops, - 0, mlxsw_core); + fw_fatal = devl_health_reporter_create(devlink, &mlxsw_core_health_fw_fatal_ops, + 0, mlxsw_core); if (IS_ERR(fw_fatal)) { dev_err(mlxsw_core->bus_info->dev, "Failed to create fw fatal reporter"); return PTR_ERR(fw_fatal); @@ -2072,7 +2072,7 @@ static int mlxsw_core_health_init(struct mlxsw_core *mlxsw_core) err_fw_fatal_config: mlxsw_core_trap_unregister(mlxsw_core, &mlxsw_core_health_listener, mlxsw_core); err_trap_register: - devlink_health_reporter_destroy(mlxsw_core->health.fw_fatal); + devl_health_reporter_destroy(mlxsw_core->health.fw_fatal); return err; } @@ -2085,7 +2085,7 @@ static void mlxsw_core_health_fini(struct mlxsw_core *mlxsw_core) mlxsw_core_trap_unregister(mlxsw_core, &mlxsw_core_health_listener, mlxsw_core); /* Make sure there is no more event work scheduled */ mlxsw_core_flush_owq(); - devlink_health_reporter_destroy(mlxsw_core->health.fw_fatal); + devl_health_reporter_destroy(mlxsw_core->health.fw_fatal); } static void mlxsw_core_irq_event_handler_init(struct mlxsw_core *mlxsw_core) diff --git a/drivers/net/netdevsim/health.c b/drivers/net/netdevsim/health.c index aa77af4a68df..eb04ed715d2d 100644 --- a/drivers/net/netdevsim/health.c +++ b/drivers/net/netdevsim/health.c @@ -233,16 +233,16 @@ int nsim_dev_health_init(struct nsim_dev *nsim_dev, struct devlink *devlink) int err; health->empty_reporter = - devlink_health_reporter_create(devlink, - &nsim_dev_empty_reporter_ops, - 0, health); + devl_health_reporter_create(devlink, + &nsim_dev_empty_reporter_ops, + 0, health); if (IS_ERR(health->empty_reporter)) return PTR_ERR(health->empty_reporter); health->dummy_reporter = - devlink_health_reporter_create(devlink, - &nsim_dev_dummy_reporter_ops, - 0, health); + devl_health_reporter_create(devlink, + &nsim_dev_dummy_reporter_ops, + 0, health); if (IS_ERR(health->dummy_reporter)) { err = PTR_ERR(health->dummy_reporter); goto err_empty_reporter_destroy; @@ -266,9 +266,9 @@ int nsim_dev_health_init(struct nsim_dev *nsim_dev, struct devlink *devlink) return 0; err_dummy_reporter_destroy: - devlink_health_reporter_destroy(health->dummy_reporter); + devl_health_reporter_destroy(health->dummy_reporter); err_empty_reporter_destroy: - devlink_health_reporter_destroy(health->empty_reporter); + devl_health_reporter_destroy(health->empty_reporter); return err; } @@ -278,6 +278,6 @@ void nsim_dev_health_exit(struct nsim_dev *nsim_dev) debugfs_remove_recursive(health->ddir); kfree(health->recovered_break_msg); - devlink_health_reporter_destroy(health->dummy_reporter); - devlink_health_reporter_destroy(health->empty_reporter); + devl_health_reporter_destroy(health->dummy_reporter); + devl_health_reporter_destroy(health->empty_reporter); } diff --git a/include/net/devlink.h b/include/net/devlink.h index d7c9572e5bea..0d64feaef7cb 100644 --- a/include/net/devlink.h +++ b/include/net/devlink.h @@ -1865,19 +1865,35 @@ int devlink_fmsg_binary_pair_put(struct devlink_fmsg *fmsg, const char *name, const void *value, u32 value_len); struct devlink_health_reporter * -devlink_health_reporter_create(struct devlink *devlink, - const struct devlink_health_reporter_ops *ops, - u64 graceful_period, void *priv); +devl_port_health_reporter_create(struct devlink_port *port, + const struct devlink_health_reporter_ops *ops, + u64 graceful_period, void *priv); struct devlink_health_reporter * devlink_port_health_reporter_create(struct devlink_port *port, const struct devlink_health_reporter_ops *ops, u64 graceful_period, void *priv); +struct devlink_health_reporter * +devl_health_reporter_create(struct devlink *devlink, + const struct devlink_health_reporter_ops *ops, + u64 graceful_period, void *priv); + +struct devlink_health_reporter * +devlink_health_reporter_create(struct devlink *devlink, + const struct devlink_health_reporter_ops *ops, + u64 graceful_period, void *priv); + +void +devl_health_reporter_destroy(struct devlink_health_reporter *reporter); + void devlink_health_reporter_destroy(struct devlink_health_reporter *reporter); void +devl_port_health_reporter_destroy(struct devlink_health_reporter *reporter); + +void devlink_port_health_reporter_destroy(struct devlink_health_reporter *reporter); void * diff --git a/net/devlink/leftover.c b/net/devlink/leftover.c index f029e1bc68f6..0263dc18e72d 100644 --- a/net/devlink/leftover.c +++ b/net/devlink/leftover.c @@ -7337,8 +7337,8 @@ __devlink_health_reporter_create(struct devlink *devlink, } /** - * devlink_port_health_reporter_create - create devlink health reporter for - * specified port instance + * devl_port_health_reporter_create - create devlink health reporter for + * specified port instance * * @port: devlink_port which should contain the new reporter * @ops: ops @@ -7346,12 +7346,13 @@ __devlink_health_reporter_create(struct devlink *devlink, * @priv: priv */ struct devlink_health_reporter * -devlink_port_health_reporter_create(struct devlink_port *port, - const struct devlink_health_reporter_ops *ops, - u64 graceful_period, void *priv) +devl_port_health_reporter_create(struct devlink_port *port, + const struct devlink_health_reporter_ops *ops, + u64 graceful_period, void *priv) { struct devlink_health_reporter *reporter; + devl_assert_locked(port->devlink); mutex_lock(&port->reporters_lock); if (__devlink_health_reporter_find_by_name(&port->reporter_list, &port->reporters_lock, ops->name)) { @@ -7370,10 +7371,26 @@ unlock: mutex_unlock(&port->reporters_lock); return reporter; } +EXPORT_SYMBOL_GPL(devl_port_health_reporter_create); + +struct devlink_health_reporter * +devlink_port_health_reporter_create(struct devlink_port *port, + const struct devlink_health_reporter_ops *ops, + u64 graceful_period, void *priv) +{ + struct devlink_health_reporter *reporter; + struct devlink *devlink = port->devlink; + + devl_lock(devlink); + reporter = devl_port_health_reporter_create(port, ops, + graceful_period, priv); + devl_unlock(devlink); + return reporter; +} EXPORT_SYMBOL_GPL(devlink_port_health_reporter_create); /** - * devlink_health_reporter_create - create devlink health reporter + * devl_health_reporter_create - create devlink health reporter * * @devlink: devlink * @ops: ops @@ -7381,12 +7398,13 @@ EXPORT_SYMBOL_GPL(devlink_port_health_reporter_create); * @priv: priv */ struct devlink_health_reporter * -devlink_health_reporter_create(struct devlink *devlink, - const struct devlink_health_reporter_ops *ops, - u64 graceful_period, void *priv) +devl_health_reporter_create(struct devlink *devlink, + const struct devlink_health_reporter_ops *ops, + u64 graceful_period, void *priv) { struct devlink_health_reporter *reporter; + devl_assert_locked(devlink); mutex_lock(&devlink->reporters_lock); if (devlink_health_reporter_find_by_name(devlink, ops->name)) { reporter = ERR_PTR(-EEXIST); @@ -7403,6 +7421,21 @@ unlock: mutex_unlock(&devlink->reporters_lock); return reporter; } +EXPORT_SYMBOL_GPL(devl_health_reporter_create); + +struct devlink_health_reporter * +devlink_health_reporter_create(struct devlink *devlink, + const struct devlink_health_reporter_ops *ops, + u64 graceful_period, void *priv) +{ + struct devlink_health_reporter *reporter; + + devl_lock(devlink); + reporter = devl_health_reporter_create(devlink, ops, + graceful_period, priv); + devl_unlock(devlink); + return reporter; +} EXPORT_SYMBOL_GPL(devlink_health_reporter_create); static void @@ -7429,35 +7462,61 @@ __devlink_health_reporter_destroy(struct devlink_health_reporter *reporter) } /** - * devlink_health_reporter_destroy - destroy devlink health reporter + * devl_health_reporter_destroy - destroy devlink health reporter * * @reporter: devlink health reporter to destroy */ void -devlink_health_reporter_destroy(struct devlink_health_reporter *reporter) +devl_health_reporter_destroy(struct devlink_health_reporter *reporter) { struct mutex *lock = &reporter->devlink->reporters_lock; + devl_assert_locked(reporter->devlink); + mutex_lock(lock); __devlink_health_reporter_destroy(reporter); mutex_unlock(lock); } +EXPORT_SYMBOL_GPL(devl_health_reporter_destroy); + +void +devlink_health_reporter_destroy(struct devlink_health_reporter *reporter) +{ + struct devlink *devlink = reporter->devlink; + + devl_lock(devlink); + devl_health_reporter_destroy(reporter); + devl_unlock(devlink); +} EXPORT_SYMBOL_GPL(devlink_health_reporter_destroy); /** - * devlink_port_health_reporter_destroy - destroy devlink port health reporter + * devl_port_health_reporter_destroy - destroy devlink port health reporter * * @reporter: devlink health reporter to destroy */ void -devlink_port_health_reporter_destroy(struct devlink_health_reporter *reporter) +devl_port_health_reporter_destroy(struct devlink_health_reporter *reporter) { struct mutex *lock = &reporter->devlink_port->reporters_lock; + devl_assert_locked(reporter->devlink); + mutex_lock(lock); __devlink_health_reporter_destroy(reporter); mutex_unlock(lock); } +EXPORT_SYMBOL_GPL(devl_port_health_reporter_destroy); + +void +devlink_port_health_reporter_destroy(struct devlink_health_reporter *reporter) +{ + struct devlink *devlink = reporter->devlink; + + devl_lock(devlink); + devl_port_health_reporter_destroy(reporter); + devl_unlock(devlink); +} EXPORT_SYMBOL_GPL(devlink_port_health_reporter_destroy); static int @@ -7805,12 +7864,11 @@ devlink_nl_cmd_health_reporter_get_dumpit(struct sk_buff *msg, unsigned long port_index; int idx = 0; + devl_lock(devlink); + if (!devl_is_registered(devlink)) + goto next_devlink; + mutex_lock(&devlink->reporters_lock); - if (!devl_is_registered(devlink)) { - mutex_unlock(&devlink->reporters_lock); - devlink_put(devlink); - continue; - } list_for_each_entry(reporter, &devlink->reporter_list, list) { @@ -7824,6 +7882,7 @@ devlink_nl_cmd_health_reporter_get_dumpit(struct sk_buff *msg, NLM_F_MULTI); if (err) { mutex_unlock(&devlink->reporters_lock); + devl_unlock(devlink); devlink_put(devlink); state->idx = idx; goto out; @@ -7832,10 +7891,6 @@ devlink_nl_cmd_health_reporter_get_dumpit(struct sk_buff *msg, } mutex_unlock(&devlink->reporters_lock); - devl_lock(devlink); - if (!devl_is_registered(devlink)) - goto next_devlink; - xa_for_each(&devlink->ports, port_index, port) { mutex_lock(&port->reporters_lock); list_for_each_entry(reporter, &port->reporter_list, list) { |