From: David S. Miller <[email protected]>

  =====================================================================
  | This is a commit scheduled for the next v2.6.34 longterm release. |
  | If you see a problem with using this for longterm, please comment.|
  =====================================================================

commit c39508d6f118308355468314ff414644115a07f3 upstream

Use TCP_MIN_MSS instead of constant 64.

Reported-by: Min Zhang <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Signed-off-by: Paul Gortmaker <[email protected]>
---
 net/ipv4/tcp.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 5ad716b..3a8cbf7 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -2234,7 +2234,7 @@ static int do_tcp_setsockopt(struct sock *sk, int level,
                /* 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;
                }
-- 
1.7.4.4

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