From: "Brian F. G. Bidulock" <bidulock@openss7.org>
To: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
Cc: David Miller <davem@davemloft.net>,
draghuram@rocketmail.com, linux-kernel@vger.kernel.org,
netdev@vger.kernel.org
Subject: Re: Question about tcp hash function tcp_hashfn()
Date: Thu, 1 Jun 2006 00:18:25 -0600 [thread overview]
Message-ID: <20060601001825.A21730@openss7.org> (raw)
In-Reply-To: <20060601060424.GA28087@2ka.mipt.ru>; from johnpol@2ka.mipt.ru on Thu, Jun 01, 2006 at 10:04:24AM +0400
Evgeniy,
On Thu, 01 Jun 2006, Evgeniy Polyakov wrote:
>
> for (i=0; i<hash_size*iter_num; ++i) {
> saddr = num2ip(get_random_byte(), get_random_byte(), get_random_byte(), get_random_byte());
> sport = get_random_word();
You still have a problem: you cannot use a pseudo-random number
generator to generate the sample set as the pseudo-random number
generator function itself can interact with the hash.
Try iterating through all 2**48 values or at least a sizeable
representative subset.
next prev parent reply other threads:[~2006-06-01 6:18 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-05-31 4:29 Question about tcp hash function tcp_hashfn() Raghuram
2006-05-31 5:55 ` Brian F. G. Bidulock
2006-05-31 7:10 ` David Miller
2006-05-31 7:45 ` Brian F. G. Bidulock
2006-05-31 7:49 ` David Miller
2006-05-31 8:00 ` Brian F. G. Bidulock
2006-05-31 9:03 ` Evgeniy Polyakov
2006-05-31 9:12 ` David Miller
2006-05-31 9:44 ` Evgeniy Polyakov
2006-05-31 9:51 ` Brian F. G. Bidulock
2006-05-31 10:58 ` Evgeniy Polyakov
2006-05-31 11:04 ` Evgeniy Polyakov
2006-05-31 13:06 ` Evgeniy Polyakov
2006-05-31 18:29 ` Brian F. G. Bidulock
2006-06-01 6:12 ` Evgeniy Polyakov
2006-06-01 6:18 ` David Miller
2006-06-01 6:22 ` Brian F. G. Bidulock
2006-06-01 6:24 ` David Miller
2006-05-31 18:41 ` David Miller
2006-06-01 6:04 ` Evgeniy Polyakov
2006-06-01 6:18 ` Brian F. G. Bidulock [this message]
2006-06-01 6:30 ` Evgeniy Polyakov
2006-06-01 6:46 ` Brian F. G. Bidulock
2006-06-01 7:01 ` Evgeniy Polyakov
2006-06-01 7:11 ` Brian F. G. Bidulock
2006-06-01 8:38 ` Evgeniy Polyakov
2006-06-01 10:24 ` Brian F. G. Bidulock
2006-06-01 11:06 ` Evgeniy Polyakov
2006-06-01 18:40 ` Brian F. G. Bidulock
2006-06-01 20:21 ` David Miller
2006-06-02 7:01 ` Evgeniy Polyakov
2006-06-02 5:40 ` Florian Weimer
2006-06-02 7:48 ` Evgeniy Polyakov
2006-06-02 15:10 ` Brian F. G. Bidulock
2006-06-02 17:26 ` Florian Weimer
2006-06-02 17:37 ` Brian F. G. Bidulock
2006-05-31 9:52 ` Brian F. G. Bidulock
2006-05-31 8:49 ` Brian F. G. Bidulock
2006-05-31 9:02 ` David Miller
2006-05-31 9:39 ` Brian F. G. Bidulock
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