[055/152] tcp: Make TCP_MAXSEG minimum more correct.

[Greg KH]

2.6.36-stable review patch.  If anyone has any objections, please let us 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>
---
 net/ipv4/tcp.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -2246,7 +2246,7 @@ 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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