---

yaml
---
r: 278267
b: refs/heads/master
c: 6b5a5c0
h: refs/heads/master
i:
  278265: bf898a1
  278263: 77feafc
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: befc93fe76177b3b6ee1e3351b58293866f43aa6
+refs/heads/master: 6b5a5c0dbb11dcff4e1b0f1ef87a723197948ed4

trunk/include/net/tcp.h

@@ -834,6 +834,14 @@ static inline __u32 tcp_current_ssthresh(const struct sock *sk)
 extern void tcp_enter_cwr(struct sock *sk, const int set_ssthresh);
 extern __u32 tcp_init_cwnd(const struct tcp_sock *tp, const struct dst_entry *dst);
 
+/* The maximum number of MSS of available cwnd for which TSO defers
+ * sending if not using sysctl_tcp_tso_win_divisor.
+ */
+static inline __u32 tcp_max_tso_deferred_mss(const struct tcp_sock *tp)
+{
+	return 3;
+}
+
 /* Slow start with delack produces 3 packets of burst, so that
  * it is safe "de facto".  This will be the default - same as
  * the default reordering threshold - but if reordering increases,

trunk/net/ipv4/tcp_cong.c

@@ -292,7 +292,7 @@ int tcp_is_cwnd_limited(const struct sock *sk, u32 in_flight)
 	    left * sysctl_tcp_tso_win_divisor < tp->snd_cwnd &&
 	    left * tp->mss_cache < sk->sk_gso_max_size)
 		return 1;
-	return left <= tcp_max_burst(tp);
+	return left <= tcp_max_tso_deferred_mss(tp);
 }
 EXPORT_SYMBOL_GPL(tcp_is_cwnd_limited);
 

trunk/net/ipv4/tcp_output.c

@@ -1581,7 +1581,7 @@ static int tcp_tso_should_defer(struct sock *sk, struct sk_buff *skb)
 		 * frame, so if we have space for more than 3 frames
 		 * then send now.
 		 */
-		if (limit > tcp_max_burst(tp) * tp->mss_cache)
+		if (limit > tcp_max_tso_deferred_mss(tp) * tp->mss_cache)
 			goto send_now;
 	}