diff options
| -rw-r--r-- | drivers/net/netdevsim/dev.c | 4 | ||||
| -rw-r--r-- | include/net/devlink.h | 14 | ||||
| -rw-r--r-- | net/core/devlink.c | 56 |
3 files changed, 41 insertions, 33 deletions
diff --git a/drivers/net/netdevsim/dev.c b/drivers/net/netdevsim/dev.c index 6348307bfa84..d538a39d4225 100644 --- a/drivers/net/netdevsim/dev.c +++ b/drivers/net/netdevsim/dev.c @@ -1431,10 +1431,10 @@ int nsim_dev_probe(struct nsim_bus_dev *nsim_bus_dev) struct devlink *devlink; int err; - devlink = devlink_alloc(&nsim_dev_devlink_ops, sizeof(*nsim_dev)); + devlink = devlink_alloc_ns(&nsim_dev_devlink_ops, sizeof(*nsim_dev), + nsim_bus_dev->initial_net); if (!devlink) return -ENOMEM; - devlink_net_set(devlink, nsim_bus_dev->initial_net); nsim_dev = devlink_priv(devlink); nsim_dev->nsim_bus_dev = nsim_bus_dev; nsim_dev->switch_id.id_len = sizeof(nsim_dev->switch_id.id); diff --git a/include/net/devlink.h b/include/net/devlink.h index e48a62320407..08f4c6191e72 100644 --- a/include/net/devlink.h +++ b/include/net/devlink.h @@ -1540,8 +1540,18 @@ static inline struct devlink *netdev_to_devlink(struct net_device *dev) struct ib_device; struct net *devlink_net(const struct devlink *devlink); -void devlink_net_set(struct devlink *devlink, struct net *net); -struct devlink *devlink_alloc(const struct devlink_ops *ops, size_t priv_size); +/* This call is intended for software devices that can create + * devlink instances in other namespaces than init_net. + * + * Drivers that operate on real HW must use devlink_alloc() instead. + */ +struct devlink *devlink_alloc_ns(const struct devlink_ops *ops, + size_t priv_size, struct net *net); +static inline struct devlink *devlink_alloc(const struct devlink_ops *ops, + size_t priv_size) +{ + return devlink_alloc_ns(ops, priv_size, &init_net); +} int devlink_register(struct devlink *devlink, struct device *dev); void devlink_unregister(struct devlink *devlink); void devlink_reload_enable(struct devlink *devlink); diff --git a/net/core/devlink.c b/net/core/devlink.c index b596a971b473..fd2fc2befba9 100644 --- a/net/core/devlink.c +++ b/net/core/devlink.c @@ -108,19 +108,6 @@ struct net *devlink_net(const struct devlink *devlink) } EXPORT_SYMBOL_GPL(devlink_net); -static void __devlink_net_set(struct devlink *devlink, struct net *net) -{ - write_pnet(&devlink->_net, net); -} - -void devlink_net_set(struct devlink *devlink, struct net *net) -{ - if (WARN_ON(devlink->dev)) - return; - __devlink_net_set(devlink, net); -} -EXPORT_SYMBOL_GPL(devlink_net_set); - static struct devlink *devlink_get_from_attrs(struct net *net, struct nlattr **attrs) { @@ -3801,10 +3788,12 @@ static void devlink_param_notify(struct devlink *devlink, struct devlink_param_item *param_item, enum devlink_command cmd); -static void devlink_reload_netns_change(struct devlink *devlink, - struct net *dest_net) +static void devlink_ns_change_notify(struct devlink *devlink, + struct net *dest_net, struct net *curr_net, + bool new) { struct devlink_param_item *param_item; + enum devlink_command cmd; /* Userspace needs to be notified about devlink objects * removed from original and entering new network namespace. @@ -3812,17 +3801,18 @@ static void devlink_reload_netns_change(struct devlink *devlink, * reload process so the notifications are generated separatelly. */ - list_for_each_entry(param_item, &devlink->param_list, list) - devlink_param_notify(devlink, 0, param_item, - DEVLINK_CMD_PARAM_DEL); - devlink_notify(devlink, DEVLINK_CMD_DEL); + if (!dest_net || net_eq(dest_net, curr_net)) + return; - __devlink_net_set(devlink, dest_net); + if (new) + devlink_notify(devlink, DEVLINK_CMD_NEW); - devlink_notify(devlink, DEVLINK_CMD_NEW); + cmd = new ? DEVLINK_CMD_PARAM_NEW : DEVLINK_CMD_PARAM_DEL; list_for_each_entry(param_item, &devlink->param_list, list) - devlink_param_notify(devlink, 0, param_item, - DEVLINK_CMD_PARAM_NEW); + devlink_param_notify(devlink, 0, param_item, cmd); + + if (!new) + devlink_notify(devlink, DEVLINK_CMD_DEL); } static bool devlink_reload_supported(const struct devlink_ops *ops) @@ -3902,6 +3892,7 @@ static int devlink_reload(struct devlink *devlink, struct net *dest_net, u32 *actions_performed, struct netlink_ext_ack *extack) { u32 remote_reload_stats[DEVLINK_RELOAD_STATS_ARRAY_SIZE]; + struct net *curr_net; int err; if (!devlink->reload_enabled) @@ -3909,18 +3900,22 @@ static int devlink_reload(struct devlink *devlink, struct net *dest_net, memcpy(remote_reload_stats, devlink->stats.remote_reload_stats, sizeof(remote_reload_stats)); + + curr_net = devlink_net(devlink); + devlink_ns_change_notify(devlink, dest_net, curr_net, false); err = devlink->ops->reload_down(devlink, !!dest_net, action, limit, extack); if (err) return err; - if (dest_net && !net_eq(dest_net, devlink_net(devlink))) - devlink_reload_netns_change(devlink, dest_net); + if (dest_net && !net_eq(dest_net, curr_net)) + write_pnet(&devlink->_net, dest_net); err = devlink->ops->reload_up(devlink, action, limit, actions_performed, extack); devlink_reload_failed_set(devlink, !!err); if (err) return err; + devlink_ns_change_notify(devlink, dest_net, curr_net, true); WARN_ON(!(*actions_performed & BIT(action))); /* Catch driver on updating the remote action within devlink reload */ WARN_ON(memcmp(remote_reload_stats, devlink->stats.remote_reload_stats, @@ -8768,15 +8763,18 @@ static bool devlink_reload_actions_valid(const struct devlink_ops *ops) } /** - * devlink_alloc - Allocate new devlink instance resources + * devlink_alloc_ns - Allocate new devlink instance resources + * in specific namespace * * @ops: ops * @priv_size: size of user private data + * @net: net namespace * * Allocate new devlink instance resources, including devlink index * and name. */ -struct devlink *devlink_alloc(const struct devlink_ops *ops, size_t priv_size) +struct devlink *devlink_alloc_ns(const struct devlink_ops *ops, + size_t priv_size, struct net *net) { struct devlink *devlink; @@ -8791,7 +8789,7 @@ struct devlink *devlink_alloc(const struct devlink_ops *ops, size_t priv_size) return NULL; devlink->ops = ops; xa_init_flags(&devlink->snapshot_ids, XA_FLAGS_ALLOC); - __devlink_net_set(devlink, &init_net); + write_pnet(&devlink->_net, net); INIT_LIST_HEAD(&devlink->port_list); INIT_LIST_HEAD(&devlink->rate_list); INIT_LIST_HEAD(&devlink->sb_list); @@ -8807,7 +8805,7 @@ struct devlink *devlink_alloc(const struct devlink_ops *ops, size_t priv_size) mutex_init(&devlink->reporters_lock); return devlink; } -EXPORT_SYMBOL_GPL(devlink_alloc); +EXPORT_SYMBOL_GPL(devlink_alloc_ns); /** * devlink_register - Register devlink instance |