batman-adv: Prefix gateway-client 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/gateway_client.h b/net/batman-adv/gateway_client.h
index bf56a5a..2c2446f 100644
--- a/net/batman-adv/gateway_client.h
+++ b/net/batman-adv/gateway_client.h
@@ -22,17 +22,19 @@
 #ifndef _NET_BATMAN_ADV_GATEWAY_CLIENT_H_
 #define _NET_BATMAN_ADV_GATEWAY_CLIENT_H_
 
-void gw_deselect(struct bat_priv *bat_priv);
-void gw_election(struct bat_priv *bat_priv);
-struct orig_node *gw_get_selected_orig(struct bat_priv *bat_priv);
-void gw_check_election(struct bat_priv *bat_priv, struct orig_node *orig_node);
-void gw_node_update(struct bat_priv *bat_priv,
-		    struct orig_node *orig_node, uint8_t new_gwflags);
-void gw_node_delete(struct bat_priv *bat_priv, struct orig_node *orig_node);
-void gw_node_purge(struct bat_priv *bat_priv);
-int gw_client_seq_print_text(struct seq_file *seq, void *offset);
-bool gw_is_dhcp_target(struct sk_buff *skb, unsigned int *header_len);
-bool gw_out_of_range(struct bat_priv *bat_priv,
-		     struct sk_buff *skb, struct ethhdr *ethhdr);
+void batadv_gw_deselect(struct bat_priv *bat_priv);
+void batadv_gw_election(struct bat_priv *bat_priv);
+struct orig_node *batadv_gw_get_selected_orig(struct bat_priv *bat_priv);
+void batadv_gw_check_election(struct bat_priv *bat_priv,
+			      struct orig_node *orig_node);
+void batadv_gw_node_update(struct bat_priv *bat_priv,
+			   struct orig_node *orig_node, uint8_t new_gwflags);
+void batadv_gw_node_delete(struct bat_priv *bat_priv,
+			   struct orig_node *orig_node);
+void batadv_gw_node_purge(struct bat_priv *bat_priv);
+int batadv_gw_client_seq_print_text(struct seq_file *seq, void *offset);
+bool batadv_gw_is_dhcp_target(struct sk_buff *skb, unsigned int *header_len);
+bool batadv_gw_out_of_range(struct bat_priv *bat_priv,
+			    struct sk_buff *skb, struct ethhdr *ethhdr);
 
 #endif /* _NET_BATMAN_ADV_GATEWAY_CLIENT_H_ */