From: David Miller <davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org>
To: opurdila-+zzKsuq53OdBDgjK7y7TUQ@public.gmane.org
Cc: amwang-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
eric.dumazet-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org,
linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
nhorman-2XuSBdqkA4R54TAoqtyWWQ@public.gmane.org,
linux-sctp-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: [RFC Patch] net: reserve ports for applications using fixed port numbers
Date: Thu, 04 Feb 2010 10:21:13 -0800 (PST) [thread overview]
Message-ID: <20100204.102113.267879565.davem@davemloft.net> (raw)
In-Reply-To: <201002042015.51092.opurdila-+zzKsuq53OdBDgjK7y7TUQ@public.gmane.org>
From: Octavian Purdila <opurdila-+zzKsuq53OdBDgjK7y7TUQ@public.gmane.org>
Date: Thu, 4 Feb 2010 20:15:51 +0200
> int inet_is_reserved_local_port(int port)
> {
> if (test_bit(port, reserved_ports))
> return 1;
> return 0;
> }
>
> In theory it might be slower because of the reserved_ports bitmap will have a
> larger memory footprint than just a min/max, especially with random port
> allocation. But is this an issue in practice?
No need to speculate, some simple benchmarks would confirm or deny
this.
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next prev parent reply other threads:[~2010-02-04 18:21 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-02-03 4:30 [RFC Patch] net: reserve ports for applications using fixed port numbers Amerigo Wang
[not found] ` <20100203043332.3817.27932.sendpatchset-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
2010-02-03 4:39 ` Eric Dumazet
2010-02-03 5:15 ` Cong Wang
2010-02-03 11:12 ` Octavian Purdila
[not found] ` <201002031312.48531.opurdila-+zzKsuq53OdBDgjK7y7TUQ@public.gmane.org>
2010-02-04 3:23 ` Cong Wang
[not found] ` <4B6A3DBA.1000706-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2010-02-04 12:44 ` Octavian Purdila
[not found] ` <201002041444.01897.opurdila-+zzKsuq53OdBDgjK7y7TUQ@public.gmane.org>
2010-02-04 17:41 ` David Miller
[not found] ` <20100204.094110.64247447.davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org>
2010-02-04 18:15 ` Octavian Purdila
[not found] ` <201002042015.51092.opurdila-+zzKsuq53OdBDgjK7y7TUQ@public.gmane.org>
2010-02-04 18:21 ` David Miller [this message]
2010-02-04 21:45 ` Tetsuo Handa
[not found] ` <201002050645.CEC95380.MLOtOVFFHSFOQJ-JPay3/Yim36HaxMnTkn67Xf5DAMn2ifp@public.gmane.org>
2010-02-04 21:56 ` David Miller
2010-02-05 0:41 ` Tetsuo Handa
2010-02-05 1:05 ` Octavian Purdila
2010-02-05 6:01 ` Cong Wang
2010-02-05 12:28 ` Octavian Purdila
2010-02-05 4:45 ` Cong Wang
[not found] ` <4B6BA272.4090405-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2010-02-05 12:05 ` Octavian Purdila
[not found] ` <201002051405.54029.opurdila-+zzKsuq53OdBDgjK7y7TUQ@public.gmane.org>
2010-02-08 3:21 ` Cong Wang
[not found] ` <4B6F834E.4010801-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2010-02-08 16:51 ` Octavian Purdila
2010-02-05 7:11 ` Bart Van Assche
2010-02-05 7:25 ` Cong Wang
2010-02-05 9:08 ` [RFC Patch] net: reserve ports for applications using fixed portnumbers Tetsuo Handa
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