[PATCH] [47/139] tcp: Make TCP_MAXSEG minimum more correct.

[Andi Kleen]

2.6.35-longterm review patch.  If anyone has any objections, please let me know.

------------------

From: David S. Miller <davem@xxxxxxxxxxxxx>

[ Upstream commit c39508d6f118308355468314ff414644115a07f3 ]

Use TCP_MIN_MSS instead of constant 64.

Reported-by: Min Zhang <mzhang@xxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>
Signed-off-by: Andi Kleen <ak@xxxxxxxxxxxxxxx>

---
 net/ipv4/tcp.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: linux-2.6.35.y/net/ipv4/tcp.c
===================================================================
--- linux-2.6.35.y.orig/net/ipv4/tcp.c
+++ linux-2.6.35.y/net/ipv4/tcp.c
@@ -2235,7 +2235,7 @@ static int do_tcp_setsockopt(struct sock
 		/* Values greater than interface MTU won't take effect. However
 		 * at the point when this call is done we typically don't yet
 		 * know which interface is going to be used */
-		if (val < 64 || val > MAX_TCP_WINDOW) {
+		if (val < TCP_MIN_MSS || val > MAX_TCP_WINDOW) {
 			err = -EINVAL;
 			break;
 		}
--
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