[TCP]: Allow choosing TCP congestion control via sockopt.

Allow using setsockopt to set TCP congestion control to use on a per
socket basis.

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/linux/tcp.h b/include/linux/tcp.h
index 3ea75dd6640a..dfd93d03f5d2 100644
--- a/include/linux/tcp.h
+++ b/include/linux/tcp.h
@@ -127,6 +127,7 @@ enum {
 #define TCP_WINDOW_CLAMP        10      /* Bound advertised window */
 #define TCP_INFO                11      /* Information about this connection. */
 #define TCP_QUICKACK            12      /* Block/reenable quick acks */
+#define TCP_CONGESTION          13      /* Congestion control algorithm */
 
 #define TCPI_OPT_TIMESTAMPS     1
 #define TCPI_OPT_SACK           2