commit 610bfc6bc99bc83680d190ebc69359a05fc7f605
author Martin Hundebøll <martin@hundeboll.net> Thu May 23 16:53:02 2013 +0200
committer Antonio Quartulli <antonio@meshcoding.com> Sat Oct 12 11:58:34 2013 +0200
tree 355ae39e185e72ca129360037525fd5f7f5ff875
parent f097e25dbe9144447f46b6b61ca3da1a2ba432d4

batman-adv: Receive fragmented packets and merge

Fragments arriving at their destination are buffered for later merge.
Merged packets are passed to the main receive function as had they never
been fragmented.

Fragments are forwarded without merging if the MTU of the outgoing
interface is smaller than the size of the merged packet.

Signed-off-by: Martin Hundebøll <martin@hundeboll.net>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>

net/batman-adv/main.c

diff --git a/net/batman-adv/main.c b/net/batman-adv/main.c
index 8822fad..ca6f134 100644
--- a/net/batman-adv/main.c
+++ b/net/batman-adv/main.c
@@ -40,6 +40,7 @@
 #include "hash.h"
 #include "bat_algo.h"
 #include "network-coding.h"
+#include "fragmentation.h"
 
 
 /* List manipulations on hardif_list have to be rtnl_lock()'ed,
@@ -399,6 +400,7 @@
 	BUILD_BUG_ON(offsetof(struct batadv_unicast_4addr_packet, src) != 10);
 	BUILD_BUG_ON(offsetof(struct batadv_unicast_packet, dest) != 4);
 	BUILD_BUG_ON(offsetof(struct batadv_unicast_tvlv_packet, dst) != 4);
+	BUILD_BUG_ON(offsetof(struct batadv_frag_packet, dest) != 4);
 	BUILD_BUG_ON(offsetof(struct batadv_icmp_packet, dst) != 4);
 	BUILD_BUG_ON(offsetof(struct batadv_icmp_packet_rr, dst) != 4);
 
@@ -414,6 +416,8 @@
 	batadv_rx_handler[BATADV_UNICAST_TVLV] = batadv_recv_unicast_tvlv;
 	/* batman icmp packet */
 	batadv_rx_handler[BATADV_ICMP] = batadv_recv_icmp_packet;
+	/* Fragmented packets */
+	batadv_rx_handler[BATADV_UNICAST_FRAG] = batadv_recv_frag_packet;
 }
 
 int