[PATCH batadv v6 03/11] batman-adv: tp_meter: initialize dec_cwnd explicitly

[Sven Eckelmann]

When batadv_tp_update_cwnd() is called, dec_cwnd is increased. But dec_cwnd
is only initialixed (to 0) when a duplicate Ack was received or when cwnd
is below the ss_threshold.

Just initialize the cwnd during the initialization to avoid any potential
access of uninitialized data.

Fixes: 98d7a766b645 ("batman-adv: throughput meter implementation")
Signed-off-by: Sven Eckelmann <s...@narfation.org>
---
 net/batman-adv/tp_meter.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/net/batman-adv/tp_meter.c b/net/batman-adv/tp_meter.c
index 8d730832..beabc264 100644
--- a/net/batman-adv/tp_meter.c
+++ b/net/batman-adv/tp_meter.c
@@ -1055,6 +1055,8 @@ void batadv_tp_start(struct batadv_priv *bat_priv, const 
u8 *dst,
         * mesh_interface, hence its MTU
         */
        tp_vars->cwnd = BATADV_TP_PLEN * 3;
+       tp_vars->dec_cwnd = 0;
+
        /* at the beginning initialise the SS threshold to the biggest possible
         * window size, hence the AWND size
         */

-- 
2.47.3