batman-adv: Distributed ARP Table - add ARP parsing functions

ARP messages are now parsed to make it possible to trigger special actions
depending on their types (snooping).

Signed-off-by: Antonio Quartulli <ordex@autistici.org>

1 files changed, 7 insertions, 1 deletions

diff --git a/net/batman-adv/packet.h b/net/batman-adv/packet.h
index 0f8dcf337df2..df548ed196d3 100644
--- a/net/batman-adv/packet.h
+++ b/net/batman-adv/packet.h
@@ -37,9 +37,15 @@ enum batadv_packettype {
 /**
  * enum batadv_subtype - packet subtype for unicast4addr
  * @BATADV_P_DATA: user payload
+ * @BATADV_P_DAT_DHT_GET: DHT request message
+ * @BATADV_P_DAT_DHT_PUT: DHT store message
+ * @BATADV_P_DAT_CACHE_REPLY: ARP reply generated by DAT
  */
 enum batadv_subtype {
-        BATADV_P_DATA           = 0x01,
+        BATADV_P_DATA                   = 0x01,
+        BATADV_P_DAT_DHT_GET            = 0x02,
+        BATADV_P_DAT_DHT_PUT            = 0x03,
+        BATADV_P_DAT_CACHE_REPLY        = 0x04,
 };
 
 /* this file is included by batctl which needs these defines */