batman-adv: add per VLAN interface attribute framework
Since batman-adv is now fully VLAN-aware, a proper framework
able to handle per-vlan-interface attributes is needed.
Those attributes will affect the associated VLAN interface
only, rather than the real soft_iface (which would result
in every vlan interface having the same attribute
configuration).
To make the code simpler and easier to extend, attributes
associated to the standalone soft_iface are now treated
like belonging to yet another vlan having a special vid.
This vid is different from the others because it is made up
by all zeros and the VLAN_HAS_TAG bit is not set.
Signed-off-by: Antonio Quartulli <antonio@open-mesh.com>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
diff --git a/net/batman-adv/types.h b/net/batman-adv/types.h
index 6954a5d..e5fecd4 100644
--- a/net/batman-adv/types.h
+++ b/net/batman-adv/types.h
@@ -531,6 +531,22 @@
};
/**
+ * struct batadv_softif_vlan - per VLAN attributes set
+ * @vid: VLAN identifier
+ * @kobj: kobject for sysfs vlan subdirectory
+ * @list: list node for bat_priv::softif_vlan_list
+ * @refcount: number of context where this object is currently in use
+ * @rcu: struct used for freeing in a RCU-safe manner
+ */
+struct batadv_softif_vlan {
+ unsigned short vid;
+ struct kobject *kobj;
+ struct hlist_node list;
+ atomic_t refcount;
+ struct rcu_head rcu;
+};
+
+/**
* struct batadv_priv - per mesh interface data
* @mesh_state: current status of the mesh (inactive/active/deactivating)
* @soft_iface: net device which holds this struct as private data
@@ -566,6 +582,9 @@
* @primary_if: one of the hard interfaces assigned to this mesh interface
* becomes the primary interface
* @bat_algo_ops: routing algorithm used by this mesh interface
+ * @softif_vlan_list: a list of softif_vlan structs, one per VLAN created on top
+ * of the mesh interface represented by this object
+ * @softif_vlan_list_lock: lock protecting softif_vlan_list
* @bla: bridge loope avoidance data
* @debug_log: holding debug logging relevant data
* @gw: gateway data
@@ -613,6 +632,8 @@
struct work_struct cleanup_work;
struct batadv_hard_iface __rcu *primary_if; /* rcu protected pointer */
struct batadv_algo_ops *bat_algo_ops;
+ struct hlist_head softif_vlan_list;
+ spinlock_t softif_vlan_list_lock; /* protects softif_vlan_list */
#ifdef CONFIG_BATMAN_ADV_BLA
struct batadv_priv_bla bla;
#endif
