1 files changed, 4 insertions, 0 deletions

diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index 20e73271d75c..124f9e4e4594 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -3130,6 +3130,8 @@ void tcp_send_delayed_ack(struct sock *sk)
         int ato = icsk->icsk_ack.ato;
         unsigned long timeout;
 
+        tcp_ca_event(sk, CA_EVENT_DELAYED_ACK);
+
         if (ato > TCP_DELACK_MIN) {
                 const struct tcp_sock *tp = tcp_sk(sk);
                 int max_ato = HZ / 2;
@@ -3186,6 +3188,8 @@ void tcp_send_ack(struct sock *sk)
         if (sk->sk_state == TCP_CLOSE)
                 return;
 
+        tcp_ca_event(sk, CA_EVENT_NON_DELAYED_ACK);
+
         /* We are not putting this on the write queue, so
          * tcp_transmit_skb() will set the ownership to this
          * sock.