tcp: move app_limited init to tcp_disconnect()

If we make sure all listeners have app_limited set to ~0U,
then a clone will also inherit proper initial value.
Signed-off-by: NEric Dumazet <edumazet@google.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/ipv4/tcp.c

@@ -2609,6 +2609,9 @@ int tcp_disconnect(struct sock *sk, int flags)
 	tp->sacked_out = 0;
 	tp->tlp_high_seq = 0;
 	tp->last_oow_ack_time = 0;
+	/* There's a bubble in the pipe until at least the first ACK. */
+	tp->app_limited = ~0U;
+
 
 	/* Clean up fastopen related fields */
 	tcp_free_fastopen_req(tp);

net/ipv4/tcp_minisocks.c

@@ -486,9 +486,6 @@ struct sock *tcp_create_openreq_child(const struct sock *sk,
 	newsk->sk_txhash = treq->txhash;
 	newtp->total_retrans = req->num_retrans;
 
-	/* There's a bubble in the pipe until at least the first ACK. */
-	newtp->app_limited = ~0U;
-
 	tcp_init_xmit_timers(newsk);
 	newtp->write_seq = newtp->pushed_seq = treq->snt_isn + 1;