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Subject[34-longterm 139/209] tcp: Make TCP_MAXSEG minimum more correct.
Date
From: David S. Miller <davem@davemloft.net>

=====================================================================
| 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 <mzhang@mvista.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
---
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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