* implementations. */
struct netdev_dev {
char *name; /* Name of network device. */
- const struct netdev_class *netdev_class; /* Functions to control
+ const struct netdev_class *netdev_class; /* Functions to control
this device. */
int ref_cnt; /* Times this devices was opened. */
struct shash_node *node; /* Pointer to element in global map. */
* to be called. May be null if nothing is needed here. */
void (*wait)(void);
- /* Attempts to create a network device of 'type' with 'name'.
- * 'type' corresponds to the 'type' field used in the netdev_class
- * structure. On success sets 'netdev_devp' to the newly created device. */
- int (*create)(const char *name, const char *type, const struct shash *args,
- struct netdev_dev **netdev_devp);
+ /* Attempts to create a network device named 'name' with initial 'args' in
+ * 'netdev_class'. On success sets 'netdev_devp' to the newly created
+ * device. */
+ int (*create)(const struct netdev_class *netdev_class, const char *name,
+ const struct shash *args, struct netdev_dev **netdev_devp);
/* Destroys 'netdev_dev'.
*
int (*get_ifindex)(const struct netdev *netdev);
/* Sets 'carrier' to true if carrier is active (link light is on) on
- * 'netdev'. */
+ * 'netdev'.
+ *
+ * May be null if device does not provide carrier status (will be always
+ * up as long as device is up).
+ */
int (*get_carrier)(const struct netdev *netdev, bool *carrier);
/* Retrieves current device stats for 'netdev' into 'stats'.
int (*get_next_hop)(const struct in_addr *host, struct in_addr *next_hop,
char **netdev_name);
+ /* Looks up the name of the interface out of which traffic will egress if
+ * 'netdev' is a tunnel. If unsuccessful, or 'netdev' is not a tunnel,
+ * will return null. This function does not necessarily return the
+ * physical interface out which traffic will egress. Instead it returns
+ * the interface which is assigned 'netdev's remote_ip. This may be an
+ * internal interface such as a bridge port.
+ *
+ * This function may be set to null if 'netdev' is not a tunnel or it is
+ * not supported. */
+ const char *(*get_tnl_iface)(const struct netdev *netdev);
+
/* Looks up the ARP table entry for 'ip' on 'netdev' and stores the
* corresponding MAC address in 'mac'. A return value of ENXIO, in
* particular, indicates that there is no ARP table entry for 'ip' on
void (*poll_remove)(struct netdev_notifier *notifier);
};
+int netdev_register_provider(const struct netdev_class *);
+int netdev_unregister_provider(const char *type);
+const struct netdev_class *netdev_lookup_provider(const char *type);
+
extern const struct netdev_class netdev_linux_class;
+extern const struct netdev_class netdev_internal_class;
extern const struct netdev_class netdev_tap_class;
-extern const struct netdev_class netdev_patch_class;
-extern const struct netdev_class netdev_gre_class;
#ifdef __cplusplus
}