commit 84565070e442583ec67fb08a5962c80203e491c3
author John Heffner <jheffner@psc.edu> Mon Apr 02 13:56:32 2007 -0700
committer David S. Miller <davem@davemloft.net> Mon Apr 02 13:56:32 2007 -0700
tree b28b0fa66b3feb2f3dddb9db9a9a9c031681a3f5
parent c873879c4db31bab414655e191cf56019b48c751

[TCP]: Do receiver-side SWS avoidance for rcvbuf < MSS.

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

net/ipv4/tcp_output.c

diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index dc15113..688b955 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -1607,6 +1607,9 @@
 		 */
 		if (window <= free_space - mss || window > free_space)
 			window = (free_space/mss)*mss;
+		else if (mss == full_space &&
+		         free_space > window + full_space/2)
+			window = free_space;
 	}
 
 	return window;