Re: [PATCH net v3 1/1] net: tcp: Permit user set TCP_MAXSEG to default value

From: fgao@ikuai8.com
Date: Tue, 21 Mar 2017 09:28:03 +0800

From: Gao Feng <redacted>

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 <redacted>
---
 v3: Correct the logic error, per Neal
 v2: Make codes more clearer, per Eric
 v1: initial version

Applied to net-next, thanks.