batman-adv: Prefix unicast non-static functions with batadv_

batman-adv can be compiled as part of the kernel instead of an module. In that
case the linker will see all non-static symbols of batman-adv and all other
non-static symbols of the kernel. This could lead to symbol collisions. A
prefix for the batman-adv symbols that defines their private namespace avoids
such a problem.

Reported-by: David Miller <davem@davemloft.net>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
diff --git a/net/batman-adv/unicast.h b/net/batman-adv/unicast.h
index a9faf6b..657fe73 100644
--- a/net/batman-adv/unicast.h
+++ b/net/batman-adv/unicast.h
@@ -27,12 +27,13 @@
 #define FRAG_TIMEOUT 10000	/* purge frag list entries after time in ms */
 #define FRAG_BUFFER_SIZE 6	/* number of list elements in buffer */
 
-int frag_reassemble_skb(struct sk_buff *skb, struct bat_priv *bat_priv,
-			struct sk_buff **new_skb);
-void frag_list_free(struct list_head *head);
-int unicast_send_skb(struct sk_buff *skb, struct bat_priv *bat_priv);
-int frag_send_skb(struct sk_buff *skb, struct bat_priv *bat_priv,
-		  struct hard_iface *hard_iface, const uint8_t dstaddr[]);
+int batadv_frag_reassemble_skb(struct sk_buff *skb, struct bat_priv *bat_priv,
+			       struct sk_buff **new_skb);
+void batadv_frag_list_free(struct list_head *head);
+int batadv_unicast_send_skb(struct sk_buff *skb, struct bat_priv *bat_priv);
+int batadv_frag_send_skb(struct sk_buff *skb, struct bat_priv *bat_priv,
+			 struct hard_iface *hard_iface,
+			 const uint8_t dstaddr[]);
 
 static inline int frag_can_reassemble(const struct sk_buff *skb, int mtu)
 {