batman-adv: randomize initial seqno to avoid collision
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
Signed-off-by: Antonio Quartulli <ordex@autistici.org>
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);