linux-kernel - [PATCH][Trivial] tcp: correct code comment stating 3 min timeout for FIN

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Message-ID: <alpine.LNX.2.00.1402092328270.8418@swampdragon.chaosbits.net>
Date:	Sun, 9 Feb 2014 23:30:32 +0100 (CET)
From:	Jesper Juhl <jj@...osbits.net>
To:	"David S. Miller" <davem@...emloft.net>
cc:	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	trivial@...nel.org
Subject: [PATCH][Trivial] tcp: correct code comment stating 3 min timeout
 for FIN_WAIT2, we only do 1 min

As far as I can tell we have used a default of 60 seconds for
FIN_WAIT2 timeout for ages (since 2.x times??).

In any case, the timeout these days is 60 seconds, so the 3 min
comment is wrong (and cost me a few minutes of my life when I was
debugging a FIN_WAIT2 related problem in a userspace application and
checked the kernel source for details).

Signed-off-by: Jesper Juhl <jj@...osbits.net>
---
 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 4475b3b..9f3a2db 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -2229,7 +2229,7 @@ adjudge_to_death:
 	/*	This is a (useful) BSD violating of the RFC. There is a
 	 *	problem with TCP as specified in that the other end could
 	 *	keep a socket open forever with no application left this end.
-	 *	We use a 3 minute timeout (about the same as BSD) then kill
+	 *	We use a 1 minute timeout (about the same as BSD) then kill
 	 *	our end. If they send after that then tough - BUT: long enough
 	 *	that we won't make the old 4*rto = almost no time - whoops
 	 *	reset mistake.
-- 
1.7.1


-- 
Jesper Juhl <jj@...osbits.net>       http://www.chaosbits.net/
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