Initial import

1 files changed, 97 insertions, 0 deletions

diff --git a/net/batman-adv/hard-interface.h b/net/batman-adv/hard-interface.h
new file mode 100644
index 000000000..1918cd50b
--- /dev/null
+++ b/net/batman-adv/hard-interface.h
@@ -0,0 +1,97 @@
+/* Copyright (C) 2007-2014 B.A.T.M.A.N. contributors:
+ *
+ * Marek Lindner, Simon Wunderlich
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _NET_BATMAN_ADV_HARD_INTERFACE_H_
+#define _NET_BATMAN_ADV_HARD_INTERFACE_H_
+
+enum batadv_hard_if_state {
+	BATADV_IF_NOT_IN_USE,
+	BATADV_IF_TO_BE_REMOVED,
+	BATADV_IF_INACTIVE,
+	BATADV_IF_ACTIVE,
+	BATADV_IF_TO_BE_ACTIVATED,
+	BATADV_IF_I_WANT_YOU,
+};
+
+/**
+ * enum batadv_hard_if_cleanup - Cleanup modi for soft_iface after slave removal
+ * @BATADV_IF_CLEANUP_KEEP: Don't automatically delete soft-interface
+ * @BATADV_IF_CLEANUP_AUTO: Delete soft-interface after last slave was removed
+ */
+enum batadv_hard_if_cleanup {
+	BATADV_IF_CLEANUP_KEEP,
+	BATADV_IF_CLEANUP_AUTO,
+};
+
+extern struct notifier_block batadv_hard_if_notifier;
+
+bool batadv_is_wifi_netdev(struct net_device *net_device);
+bool batadv_is_wifi_iface(int ifindex);
+struct batadv_hard_iface*
+batadv_hardif_get_by_netdev(const struct net_device *net_dev);
+int batadv_hardif_enable_interface(struct batadv_hard_iface *hard_iface,
+				   const char *iface_name);
+void batadv_hardif_disable_interface(struct batadv_hard_iface *hard_iface,
+				     enum batadv_hard_if_cleanup autodel);
+void batadv_hardif_remove_interfaces(void);
+int batadv_hardif_min_mtu(struct net_device *soft_iface);
+void batadv_update_min_mtu(struct net_device *soft_iface);
+void batadv_hardif_free_rcu(struct rcu_head *rcu);
+
+/**
+ * batadv_hardif_free_ref - decrement the hard interface refcounter and
+ *  possibly free it
+ * @hard_iface: the hard interface to free
+ */
+static inline void
+batadv_hardif_free_ref(struct batadv_hard_iface *hard_iface)
+{
+	if (atomic_dec_and_test(&hard_iface->refcount))
+		call_rcu(&hard_iface->rcu, batadv_hardif_free_rcu);
+}
+
+/**
+ * batadv_hardif_free_ref_now - decrement the hard interface refcounter and
+ *  possibly free it (without rcu callback)
+ * @hard_iface: the hard interface to free
+ */
+static inline void
+batadv_hardif_free_ref_now(struct batadv_hard_iface *hard_iface)
+{
+	if (atomic_dec_and_test(&hard_iface->refcount))
+		batadv_hardif_free_rcu(&hard_iface->rcu);
+}
+
+static inline struct batadv_hard_iface *
+batadv_primary_if_get_selected(struct batadv_priv *bat_priv)
+{
+	struct batadv_hard_iface *hard_iface;
+
+	rcu_read_lock();
+	hard_iface = rcu_dereference(bat_priv->primary_if);
+	if (!hard_iface)
+		goto out;
+
+	if (!atomic_inc_not_zero(&hard_iface->refcount))
+		hard_iface = NULL;
+
+out:
+	rcu_read_unlock();
+	return hard_iface;
+}
+
+#endif /* _NET_BATMAN_ADV_HARD_INTERFACE_H_ */