diff options
| author | Gao Feng | 2017-03-21 09:28:03 +0800 |
|---|---|---|
| committer | David S. Miller | 2017-03-22 11:45:13 -0700 |
| commit | cfc62d878f8d436e6a2a99cef5559a7a98c43b3c (patch) | |
| tree | 41c45922a5714afc873b0768a8defc0fafbb6470 /net | |
| parent | b2a1674aa145c1730acde73f9399539cfd987e90 (diff) | |
net: tcp: Permit user set TCP_MAXSEG to default value
When user_mss is zero, it means use the default value. But the current
codes don't permit user set TCP_MAXSEG to the default value.
It would return the -EINVAL when val is zero.
Signed-off-by: Gao Feng <fgao@ikuai8.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | 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 cf4555581282..eccec53ef100 100644 --- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c @@ -2470,7 +2470,7 @@ 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 < TCP_MIN_MSS || val > MAX_TCP_WINDOW) { + if (val && (val < TCP_MIN_MSS || val > MAX_TCP_WINDOW)) { err = -EINVAL; break; } |