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-rw-r--r--net/ipv4/tcp.c8
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.