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Date: Tue, 9 Mar 2004 15:18:29 -0800
From: "Randy.Dunlap" <rddunlap@osdl.org>
To: Rick Knight <rick@rlknight.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Dummy network device
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On Tue, 09 Mar 2004 15:11:48 -0800 Rick Knight wrote:

| > Hello,
| >
| > After I upgraded to 2.6.3 from 2.4.20 I discovered that I can only get 
| > 1 dummy device. I need to be able to load 3 dummy network devices. 
| > Scouring the kernel archives, it looks like this can be accomplished 
| > through MODULE_PARAMS, but I can find no information on the 
| > module_params are or how to use them. I have dummy built as a module 
| > and it does load at startup as dummy0. How do I get dummy1 and dummy2?
| >
| > In answering this message, please CC me.
| >
| > Thanks for your help,
| > Rick Knight
| > (rick@rlknight.com)
| 
| 
| Never mind,
| 
| I found the answer. From the archive. Decided to look at dummy.c and 
| numdummies=1, changed it to numdummies=3 and rebuilt that module. Works 
| like a charm.
| 
| Question/Suggestion, couldn't this be made an option at configuration? 
| Kind of like number_of_ptys=256.

It's supposed to be changeable at module load time, without
rebuilding it.  Try this e.g.:

modprobe dummy numdummies=4

--
~Randy