[TCP]: Add RFC3742 Limited Slow-Start, controlled by variable sysctl_tcp_max_ssthresh.

Signed-off-by: John Heffner <jheffner@psc.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 2 insertions, 0 deletions

diff --git a/include/linux/sysctl.h b/include/linux/sysctl.h
index 9a8970bf99a6..98e0fd241a25 100644
--- a/include/linux/sysctl.h
+++ b/include/linux/sysctl.h
@@ -438,6 +438,7 @@ enum
         NET_CIPSOV4_RBM_STRICTVALID=121,
         NET_TCP_AVAIL_CONG_CONTROL=122,
         NET_TCP_ALLOWED_CONG_CONTROL=123,
+        NET_TCP_MAX_SSTHRESH=124,
 };
 
 enum {
diff --git a/include/net/tcp.h b/include/net/tcp.h
index 7fd6b77519c3..6d09f5085f6a 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -230,6 +230,7 @@ extern int sysctl_tcp_mtu_probing;
 extern int sysctl_tcp_base_mss;
 extern int sysctl_tcp_workaround_signed_windows;
 extern int sysctl_tcp_slow_start_after_idle;
+extern int sysctl_tcp_max_ssthresh;
 
 extern atomic_t tcp_memory_allocated;
 extern atomic_t tcp_sockets_allocated;