1 files changed, 8 insertions, 0 deletions

diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index de02fb4b1349..2250f891f931 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -396,6 +396,9 @@ void tcp_init_sock(struct sock *sk)
          */
         tp->snd_cwnd = TCP_INIT_CWND;
 
+        /* There's a bubble in the pipe until at least the first ACK. */
+        tp->app_limited = ~0U;
+
         /* See draft-stevens-tcpca-spec-01 for discussion of the
          * initialization of these values.
          */
@@ -1014,6 +1017,9 @@ int tcp_sendpage(struct sock *sk, struct page *page, int offset,
                                         flags);
 
         lock_sock(sk);
+
+        tcp_rate_check_app_limited(sk);  /* is sending application-limited? */
+
         res = do_tcp_sendpages(sk, page, offset, size, flags);
         release_sock(sk);
         return res;
@@ -1115,6 +1121,8 @@ int tcp_sendmsg(struct sock *sk, struct msghdr *msg, size_t size)
 
         timeo = sock_sndtimeo(sk, flags & MSG_DONTWAIT);
 
+        tcp_rate_check_app_limited(sk);  /* is sending application-limited? */
+
         /* Wait for a connection to finish. One exception is TCP Fast Open
          * (passive side) where data is allowed to be sent before a connection
          * is fully established.