/* * netifd - network interface daemon * Copyright (C) 2012 Felix Fietkau * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 * as published by the Free Software Foundation * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ #ifndef __NETIFD_DEVICE_H #define __NETIFD_DEVICE_H #include #include #include struct device; struct device_user; struct device_hotplug_ops; typedef int (*device_state_cb)(struct device *, bool up); enum { DEV_ATTR_TYPE, DEV_ATTR_IFNAME, DEV_ATTR_MTU, DEV_ATTR_MACADDR, DEV_ATTR_TXQUEUELEN, DEV_ATTR_ENABLED, DEV_ATTR_IPV6, DEV_ATTR_PROMISC, DEV_ATTR_RPFILTER, __DEV_ATTR_MAX, }; enum dev_change_type { DEV_CONFIG_NO_CHANGE, DEV_CONFIG_APPLIED, DEV_CONFIG_RESTART, DEV_CONFIG_RECREATE, }; struct device_type { struct list_head list; const char *name; bool keep_link_status; const struct uci_blob_param_list *config_params; struct device *(*create)(const char *name, struct blob_attr *attr); void (*config_init)(struct device *); enum dev_change_type (*reload)(struct device *, struct blob_attr *); void (*dump_info)(struct device *, struct blob_buf *buf); void (*dump_stats)(struct device *, struct blob_buf *buf); int (*check_state)(struct device *); void (*free)(struct device *); }; enum { DEV_OPT_MTU = (1 << 0), DEV_OPT_MACADDR = (1 << 1), DEV_OPT_TXQUEUELEN = (1 << 2), DEV_OPT_IPV6 = (1 << 3), DEV_OPT_PROMISC = (1 << 4), DEV_OPT_RPFILTER = (1 << 5), }; /* events broadcasted to all users of a device */ enum device_event { DEV_EVENT_ADD, DEV_EVENT_REMOVE, DEV_EVENT_UPDATE_IFNAME, DEV_EVENT_UPDATE_IFINDEX, DEV_EVENT_SETUP, DEV_EVENT_TEARDOWN, DEV_EVENT_UP, DEV_EVENT_DOWN, DEV_EVENT_LINK_UP, DEV_EVENT_LINK_DOWN, /* Topology changed (i.e. bridge member added) */ DEV_EVENT_TOPO_CHANGE, __DEV_EVENT_MAX }; /* * device dependency with callbacks */ struct device_user { struct safe_list list; bool claimed; bool hotplug; bool alias; uint8_t ev_idx[__DEV_EVENT_MAX]; struct device *dev; void (*cb)(struct device_user *, enum device_event); }; struct device_settings { unsigned int flags; unsigned int mtu; unsigned int txqueuelen; uint8_t macaddr[6]; bool ipv6; bool promisc; unsigned int rpfilter; }; /* * link layer device. typically represents a linux network device. * can be used to support VLANs as well */ struct device { const struct device_type *type; struct avl_node avl; struct safe_list users; struct safe_list aliases; char ifname[IFNAMSIZ + 1]; int ifindex; struct blob_attr *config; bool config_pending; bool sys_present; bool present; int active; bool link_active; bool external; bool disabled; bool deferred; bool hidden; bool current_config; bool default_config; bool wireless; /* set interface up or down */ device_state_cb set_state; const struct device_hotplug_ops *hotplug_ops; struct device_user parent; struct device_settings orig_settings; struct device_settings settings; }; struct device_hotplug_ops { int (*prepare)(struct device *dev); int (*add)(struct device *main, struct device *member); int (*del)(struct device *main, struct device *member); }; extern const struct uci_blob_param_list device_attr_list; extern const struct device_type simple_device_type; extern const struct device_type bridge_device_type; extern const struct device_type tunnel_device_type; extern const struct device_type macvlan_device_type; extern const struct device_type vlandev_device_type; void device_lock(void); void device_unlock(void); struct device *device_create(const char *name, const struct device_type *type, struct blob_attr *config); void device_init_settings(struct device *dev, struct blob_attr **tb); void device_init_pending(void); enum dev_change_type device_set_config(struct device *dev, const struct device_type *type, struct blob_attr *attr); void device_reset_config(void); void device_reset_old(void); void device_init_virtual(struct device *dev, const struct device_type *type, const char *name); int device_init(struct device *iface, const struct device_type *type, const char *ifname); void device_cleanup(struct device *iface); struct device *device_get(const char *name, int create); void device_add_user(struct device_user *dep, struct device *iface); void device_remove_user(struct device_user *dep); void device_broadcast_event(struct device *dev, enum device_event ev); void device_set_present(struct device *dev, bool state); void device_set_link(struct device *dev, bool state); void device_set_ifindex(struct device *dev, int ifindex); void device_refresh_present(struct device *dev); int device_claim(struct device_user *dep); void device_release(struct device_user *dep); int device_check_state(struct device *dev); void device_dump_status(struct blob_buf *b, struct device *dev); void device_free(struct device *dev); void device_free_unused(struct device *dev); struct device *get_vlan_device_chain(const char *ifname, bool create); void alias_notify_device(const char *name, struct device *dev); struct device *device_alias_get(const char *name); static inline void device_set_deferred(struct device *dev, bool value) { dev->deferred = value; device_refresh_present(dev); } static inline void device_set_disabled(struct device *dev, bool value) { dev->disabled = value; device_refresh_present(dev); } #endif