Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux...

[deliverable/linux.git] / include / net / tcp.h

diff --git a/include/net/tcp.h b/include/net/tcp.h
index b71a446d58f6c6a74b50ebb9d2ff5d1b8c55b13f..56b76027b85eeb4c7e4de930750e9584f6326489 100644 (file)
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -793,6 +793,13 @@ static inline unsigned int tcp_packets_in_flight(const struct tcp_sock *tp)
        return tp->packets_out - tcp_left_out(tp) + tp->retrans_out;
 }
 
+#define TCP_INFINITE_SSTHRESH  0x7fffffff
+
+static inline bool tcp_in_initial_slowstart(const struct tcp_sock *tp)
+{
+       return tp->snd_ssthresh >= TCP_INFINITE_SSTHRESH;
+}
+
 /* If cwnd > ssthresh, we may raise ssthresh to be half-way to cwnd.
  * The exception is rate halving phase, when cwnd is decreasing towards
  * ssthresh.