[B.A.T.M.A.N.] [PATCH 3/8] batman-adv: randomize initial seqno to avoid collision

Marek Lindner
2012-02-07T09:20:46Z

Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
---
bat_iv_ogm.c | 5 +++++
1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/bat_iv_ogm.c b/bat_iv_ogm.c
index 3eff7f0..4ac2d1d 100644
--- a/bat_iv_ogm.c
+++ b/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;
+ unsigned long random_seqno;
+
+ /* randomize initial seqno to avoid collision */
+ get_random_bytes(&random_seqno, sizeof(unsigned long));
+ atomic_set(&hard_iface->seqno, (uint32_t)random_seqno);

hard_iface->packet_len = BATMAN_OGM_LEN;
hard_iface->packet_buff = kmalloc(hard_iface->packet_len, GFP_ATOMIC);
--
1.7.5.4