2 files changed, 22 insertions, 21 deletions

diff --git a/include/net/tcp.h b/include/net/tcp.h
index 306580ce1e53..7de4ea3a04d9 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -786,27 +786,7 @@ static inline u32 tcp_wnd_end(const struct tcp_sock *tp)
 {
         return tp->snd_una + tp->snd_wnd;
 }
-
-/* RFC2861 Check whether we are limited by application or congestion window
- * This is the inverse of cwnd check in tcp_tso_should_defer
- */
-static inline int tcp_is_cwnd_limited(const struct sock *sk, u32 in_flight)
-{
-        const struct tcp_sock *tp = tcp_sk(sk);
-        u32 left;
-
-        if (in_flight >= tp->snd_cwnd)
-                return 1;
-
-        if (!sk_can_gso(sk))
-                return 0;
-
-        left = tp->snd_cwnd - in_flight;
-        if (sysctl_tcp_tso_win_divisor)
-                return left * sysctl_tcp_tso_win_divisor < tp->snd_cwnd;
-        else
-                return left <= tcp_max_burst(tp);
-}
+extern int tcp_is_cwnd_limited(const struct sock *sk, u32 in_flight);
 
 static inline void tcp_minshall_update(struct tcp_sock *tp, unsigned int mss,
                                        const struct sk_buff *skb)
diff --git a/net/ipv4/tcp_cong.c b/net/ipv4/tcp_cong.c
index 4451750b478c..3a6be23d222f 100644
--- a/net/ipv4/tcp_cong.c
+++ b/net/ipv4/tcp_cong.c
@@ -274,6 +274,27 @@ int tcp_set_congestion_control(struct sock *sk, const char *name)
         return err;
 }
 
+/* RFC2861 Check whether we are limited by application or congestion window
+ * This is the inverse of cwnd check in tcp_tso_should_defer
+ */
+int tcp_is_cwnd_limited(const struct sock *sk, u32 in_flight)
+{
+        const struct tcp_sock *tp = tcp_sk(sk);
+        u32 left;
+
+        if (in_flight >= tp->snd_cwnd)
+                return 1;
+
+        if (!sk_can_gso(sk))
+                return 0;
+
+        left = tp->snd_cwnd - in_flight;
+        if (sysctl_tcp_tso_win_divisor)
+                return left * sysctl_tcp_tso_win_divisor < tp->snd_cwnd;
+        else
+                return left <= tcp_max_burst(tp);
+}
+EXPORT_SYMBOL_GPL(tcp_is_cwnd_limited);
 
 /*
  * Slow start is used when congestion window is less than slow start