netifd: Link layer state awareness support on device level

[project/netifd.git] / device.h

diff --git a/device.h b/device.h
index 0d9e6f4..dd57927 100644 (file)
--- a/device.h
+++ b/device.h
@@ -1,7 +1,21 @@
+/*
+ * netifd - network interface daemon
+ * Copyright (C) 2012 Felix Fietkau <nbd@openwrt.org>
+ *
+ * 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 __LL_H
 #define __LL_H
 
 #include <libubox/avl.h>
+#include <libubox/safe_list.h>
 #include <netinet/in.h>
 
 struct device;
@@ -16,12 +30,14 @@ enum {
        DEV_ATTR_MTU,
        DEV_ATTR_MACADDR,
        DEV_ATTR_TXQUEUELEN,
+       DEV_ATTR_ENABLED,
        __DEV_ATTR_MAX,
 };
 
 enum dev_change_type {
        DEV_CONFIG_NO_CHANGE,
        DEV_CONFIG_APPLIED,
+       DEV_CONFIG_RESTART,
        DEV_CONFIG_RECREATE,
 };
 
@@ -29,7 +45,7 @@ struct device_type {
        struct list_head list;
        const char *name;
 
-       const struct config_param_list *config_params;
+       const struct uci_blob_param_list *config_params;
 
        struct device *(*create)(const char *name, struct blob_attr *attr);
        void (*config_init)(struct device *);
@@ -43,7 +59,7 @@ struct device_type {
 enum {
        DEV_OPT_MTU             = (1 << 0),
        DEV_OPT_MACADDR         = (1 << 1),
-       DEV_OPT_TXQUEUELEN      = (1 << 2)
+       DEV_OPT_TXQUEUELEN      = (1 << 2),
 };
 
 /* events broadcasted to all users of a device */
@@ -51,6 +67,9 @@ 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,
@@ -58,22 +77,34 @@ enum device_event {
 
        DEV_EVENT_LINK_UP,
        DEV_EVENT_LINK_DOWN,
+
+       __DEV_EVENT_MAX
 };
 
 /*
  * device dependency with callbacks
  */
 struct device_user {
-       struct list_head list;
+       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];
+};
+
+/*
  * link layer device. typically represents a linux network device.
  * can be used to support VLANs as well
  */
@@ -81,16 +112,23 @@ struct device {
        const struct device_type *type;
 
        struct avl_node avl;
-       struct list_head users;
+       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;
@@ -102,12 +140,8 @@ struct device {
 
        struct device_user parent;
 
-       /* settings */
-       unsigned int flags;
-
-       unsigned int mtu;
-       unsigned int txqueuelen;
-       uint8_t macaddr[6];
+       struct device_settings orig_settings;
+       struct device_settings settings;
 };
 
 struct device_hotplug_ops {
@@ -116,9 +150,11 @@ struct device_hotplug_ops {
        int (*del)(struct device *main, struct device *member);
 };
 
-extern const struct config_param_list device_attr_list;
+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;
 
 void device_lock(void);
 void device_unlock(void);
@@ -141,22 +177,36 @@ 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);
 
-static inline void
-device_free(struct device *dev)
-{
-       dev->type->free(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