data: move from spinlocks to lockless data structurejd/lockless-queuing

Reference: https://www.cs.rochester.edu/research/synchronization/pseudocode/queues.html
Original-code-from: @aegis

1 files changed, 1 insertions, 1 deletions

diff --git a/src/send.c b/src/send.c
index f270ad2..850f771 100644
--- a/src/send.c
+++ b/src/send.c
@@ -111,7 +111,7 @@ void packet_send_keepalive(struct wireguard_peer *peer)
 	struct sk_buff *skb;
 	struct sk_buff_head queue;
 
-	if (list_empty(&peer->init_queue.queue)) {
+	if (!atomic_read(&peer->init_queue.len)) {
 		skb = alloc_skb(DATA_PACKET_HEAD_ROOM + MESSAGE_MINIMUM_LENGTH, GFP_ATOMIC);
 		if (unlikely(!skb))
 			return;