[B.A.T.M.A.N.] [PATCH 05/13] batman-adv: randomize initial seqno to avoid collision

[Antonio Quartulli]

From: Marek Lindner <lindner_ma...@yahoo.de>

Signed-off-by: Marek Lindner <lindner_ma...@yahoo.de>
Signed-off-by: Antonio Quartulli <or...@autistici.org>
---
 net/batman-adv/bat_iv_ogm.c |    5 +++++
 1 file changed, 5 insertions(+)

diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c
index 117b831..95bfc59 100644
--- a/net/batman-adv/bat_iv_ogm.c
+++ b/net/batman-adv/bat_iv_ogm.c
@@ -33,6 +33,11 @@
 static void bat_iv_ogm_iface_enable(struct hard_iface *hard_iface)
 {
        struct batman_ogm_packet *batman_ogm_packet;
+       uint32_t random_seqno;
+
+       /* randomize initial seqno to avoid collision */
+       get_random_bytes(&random_seqno, sizeof(random_seqno));
+       atomic_set(&hard_iface->seqno, random_seqno);
 
        hard_iface->packet_len = BATMAN_OGM_LEN;
        hard_iface->packet_buff = kmalloc(hard_iface->packet_len, GFP_ATOMIC);
-- 
1.7.9.4