batman-adv: only add recordroute information to icmp request/reply

Adding host information for record route is only required for ICMP
requests and replys, and should not be added to just any (future?)
packet type.

Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
Signed-off-by: Antonio Quartulli <antonio@meshcoding.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/net/batman-adv/routing.c b/net/batman-adv/routing.c
index 457dfef9c5fc..0dc1c0e84451 100644
--- a/net/batman-adv/routing.c
+++ b/net/batman-adv/routing.c
@@ -379,7 +379,9 @@ int batadv_recv_icmp_packet(struct sk_buff *skb,
         icmp_packet = (struct batadv_icmp_packet_rr *)skb->data;
 
         /* add record route information if not full */
-        if ((hdr_size == sizeof(struct batadv_icmp_packet_rr)) &&
+        if ((icmp_packet->msg_type == BATADV_ECHO_REPLY ||
+             icmp_packet->msg_type == BATADV_ECHO_REQUEST) &&
+            (hdr_size == sizeof(struct batadv_icmp_packet_rr)) &&
             (icmp_packet->rr_cur < BATADV_RR_LEN)) {
                 memcpy(&(icmp_packet->rr[icmp_packet->rr_cur]),
                        ethhdr->h_dest, ETH_ALEN);