netifd: Fix possible hotplug race conditions

[project/netifd.git] / device.h

diff --git a/device.h b/device.h
index 3f8dc37..6418f16 100644 (file)
--- a/device.h
+++ b/device.h
@@ -11,10 +11,11 @@
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  */
-#ifndef __LL_H
-#define __LL_H
+#ifndef __NETIFD_DEVICE_H
+#define __NETIFD_DEVICE_H
 
 #include <libubox/avl.h>
+#include <libubox/safe_list.h>
 #include <netinet/in.h>
 
 struct device;
@@ -30,6 +31,13 @@ enum {
        DEV_ATTR_MACADDR,
        DEV_ATTR_TXQUEUELEN,
        DEV_ATTR_ENABLED,
+       DEV_ATTR_IPV6,
+       DEV_ATTR_PROMISC,
+       DEV_ATTR_RPFILTER,
+       DEV_ATTR_ACCEPTLOCAL,
+       DEV_ATTR_IGMPVERSION,
+       DEV_ATTR_MLDVERSION,
+       DEV_ATTR_NEIGHREACHABLETIME,
        __DEV_ATTR_MAX,
 };
 
@@ -44,7 +52,9 @@ struct device_type {
        struct list_head list;
        const char *name;
 
-       const struct config_param_list *config_params;
+       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 *);
@@ -56,9 +66,16 @@ struct device_type {
 };
 
 enum {
-       DEV_OPT_MTU             = (1 << 0),
-       DEV_OPT_MACADDR         = (1 << 1),
-       DEV_OPT_TXQUEUELEN      = (1 << 2)
+       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),
+       DEV_OPT_ACCEPTLOCAL             = (1 << 6),
+       DEV_OPT_IGMPVERSION             = (1 << 7),
+       DEV_OPT_MLDVERSION              = (1 << 8),
+       DEV_OPT_NEIGHREACHABLETIME      = (1 << 9),
 };
 
 /* events broadcasted to all users of a device */
@@ -66,6 +83,9 @@ 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,
@@ -73,16 +93,24 @@ enum device_event {
 
        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 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);
@@ -93,9 +121,17 @@ struct device_settings {
        unsigned int mtu;
        unsigned int txqueuelen;
        uint8_t macaddr[6];
+       bool ipv6;
+       bool promisc;
+       unsigned int rpfilter;
+       bool acceptlocal;
+       unsigned int igmpversion;
+       unsigned int mldversion;
+       unsigned int neigh4reachabletime;
+       unsigned int neigh6reachabletime;
 };
 
-/* 
+/*
  * link layer device. typically represents a linux network device.
  * can be used to support VLANs as well
  */
@@ -103,7 +139,8 @@ 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;
@@ -113,12 +150,16 @@ struct device {
        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;
@@ -137,10 +178,12 @@ 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;
+extern const struct device_type vlandev_device_type;
 
 void device_lock(void);
 void device_unlock(void);
@@ -153,6 +196,9 @@ void device_init_pending(void);
 enum dev_change_type
 device_set_config(struct device *dev, const struct device_type *type,
                  struct blob_attr *attr);
+enum dev_change_type
+device_apply_config(struct device *dev, const struct device_type *type,
+                   struct blob_attr *config);
 
 void device_reset_config(void);
 void device_reset_old(void);
@@ -166,6 +212,8 @@ 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);
@@ -177,6 +225,7 @@ 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)