From: Rick Jones <rick.jones2@hp.com>
To: David Miller <davem@davemloft.net>
Cc: gerrit@erg.abdn.ac.uk, netdev@vger.kernel.org, weid@np.css.fujitsu.com
Subject: Re: [NET]: Please revert disallowing zero listen queues
Date: Tue, 06 Mar 2007 10:54:00 -0800 [thread overview]
Message-ID: <45EDB8C8.3030302@hp.com> (raw)
In-Reply-To: <20070306.103706.68156515.davem@davemloft.net>
> So we're not "disallowing" a backlog argument of zero to
> listen(). We'll accept that just fine, the only thing that
> happens is that you'll get what you ask for, that being
> no connections :-)
I'm not sure where HP-UX inherited the 0 = 1 bit - perhaps from BSD, nor
am I sure there is official chapter and verse, but:
<excerpt>
backlog is limited to the range of 0 to SOMAXCONN, which is defined in
<sys/socket.h>. SOMAXCONN is currently set to 4096. If any other
value is specified, the system automatically assigns the closest value
within the range. A backlog of 0 specifies only 1 pending
connection is allowed at any given time.
</excerpt>
I don't have a Solaris, BSD or AIX manpage for listen handy to check
them but would not be surprised to see they are similar.
rick jones
next prev parent reply other threads:[~2007-03-06 18:54 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-03-06 13:32 [NET]: Please revert disallowing zero listen queues Gerrit Renker
2007-03-06 18:37 ` David Miller
2007-03-06 18:45 ` David Miller
2007-03-06 18:54 ` Rick Jones [this message]
2007-03-06 19:11 ` David Miller
2007-03-09 19:14 ` Vlad Yasevich
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