From: Cong Wang <amwang@redhat.com>
To: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Octavian Purdila <opurdila@ixiacom.com>,
David Miller <davem@davemloft.net>,
Linux Kernel Network Developers <netdev@vger.kernel.org>,
Linux Kernel Developers <linux-kernel@vger.kernel.org>,
Neil Horman <nhorman@tuxdriver.com>
Subject: Re: [net-next PATCH v4 3/3] net: reserve ports for applications using fixed port numbers
Date: Sat, 20 Feb 2010 16:00:46 +0800 [thread overview]
Message-ID: <4B7F96AE.1010102@redhat.com> (raw)
In-Reply-To: <1266424768.3075.61.camel@edumazet-laptop>
Eric Dumazet wrote:
> Le jeudi 18 février 2010 à 00:13 +0800, Cong Wang a écrit :
>
>> I don't think so, if you want to avoid race condition, you just need to
>> write the reserved ports before any networking application starts, IOW,
>> as early as possible during boot.
>>
>
> Sure, but I was thinking retrieving the list of reserved port by a
> database query, using network :)
>
> Anyway, I just feel your argument is not applicable.
>
> Our kernel is capable of doing an intersection for us, we dont need
> to forbid user to mark a port as 'reserved' if this port is already
> blacklisted by another mechanism (for example, if this port is already
> in use)
>
Oh, I see your points.
But this still could make people confused, like me. I think we'd better
document this.
Thanks.
next prev parent reply other threads:[~2010-02-20 7:57 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-02-15 22:00 [net-next PATCH v4 0/3] net: reserve ports for applications using fixed port Octavian Purdila
2010-02-15 22:00 ` [net-next PATCH v4 1/3] sysctl: refactor integer handling proc code Octavian Purdila
2010-02-16 8:41 ` Cong Wang
2010-02-16 10:48 ` Octavian Purdila
2010-02-16 13:08 ` Cong Wang
2010-02-16 14:00 ` Octavian Purdila
2010-02-17 16:31 ` Cong Wang
2010-02-17 21:09 ` Octavian Purdila
2010-02-18 3:58 ` Octavian Purdila
2010-02-16 11:41 ` Octavian Purdila
2010-02-16 13:09 ` Cong Wang
2010-02-16 13:44 ` Octavian Purdila
2010-02-17 16:21 ` Cong Wang
2010-02-17 16:33 ` Eric W. Biederman
2010-02-18 4:25 ` Octavian Purdila
2010-02-15 22:00 ` [net-next PATCH v4 2/3] sysctl: add proc_dobitmap Octavian Purdila
2010-02-16 9:12 ` Cong Wang
2010-02-15 22:00 ` [net-next PATCH v4 3/3] net: reserve ports for applications using fixed port numbers Octavian Purdila
2010-02-16 9:37 ` Cong Wang
2010-02-16 11:06 ` Octavian Purdila
2010-02-16 13:06 ` Cong Wang
2010-02-16 13:20 ` Eric Dumazet
2010-02-17 16:13 ` Cong Wang
2010-02-17 16:39 ` Eric Dumazet
2010-02-17 16:01 ` Octavian Purdila
2010-02-20 8:00 ` Cong Wang [this message]
2010-02-16 14:25 ` Octavian Purdila
2010-02-17 16:07 ` Cong Wang
2010-02-16 17:25 ` [net-next PATCH v4 0/3] net: reserve ports for applications using fixed port Eric W. Biederman
2010-02-16 18:04 ` Octavian Purdila
2010-02-16 18:49 ` Eric W. Biederman
2010-02-16 19:51 ` Octavian Purdila
2010-02-16 20:08 ` Eric W. Biederman
2010-02-16 21:22 ` Octavian Purdila
2010-02-17 15:57 ` Cong Wang
2010-02-17 16:10 ` Eric W. Biederman
2010-02-17 16:19 ` Cong Wang
2010-02-17 16:26 ` Eric W. Biederman
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