batman-adv: Protect global TQ window with a spinlock
Signed-off-by: Linus Lüssing <linus.luessing@web.de>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
diff --git a/net/batman-adv/routing.c b/net/batman-adv/routing.c
index b7d43ca..f6c6422 100644
--- a/net/batman-adv/routing.c
+++ b/net/batman-adv/routing.c
@@ -415,10 +415,12 @@
if (is_duplicate)
continue;
+ spin_lock_bh(&tmp_neigh_node->tq_lock);
ring_buffer_set(tmp_neigh_node->tq_recv,
&tmp_neigh_node->tq_index, 0);
tmp_neigh_node->tq_avg =
ring_buffer_avg(tmp_neigh_node->tq_recv);
+ spin_unlock_bh(&tmp_neigh_node->tq_lock);
}
if (!neigh_node) {
@@ -443,10 +445,12 @@
orig_node->flags = batman_packet->flags;
neigh_node->last_valid = jiffies;
+ spin_lock_bh(&neigh_node->tq_lock);
ring_buffer_set(neigh_node->tq_recv,
&neigh_node->tq_index,
batman_packet->tq);
neigh_node->tq_avg = ring_buffer_avg(neigh_node->tq_recv);
+ spin_unlock_bh(&neigh_node->tq_lock);
if (!is_duplicate) {
orig_node->last_ttl = batman_packet->ttl;