Messages in this thread | | | Date | Sun, 3 Jun 2001 13:59:57 +0200 (CEST) | From | Bogdan Costescu <> | Subject | Re: MII access (was [PATCH] support for Cobalt Networks (x86 only) |
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On Sat, 2 Jun 2001, Alan Cox wrote:
> > > Then it needs to be privileged > > > > Fine. Can you think of a default value for expiring cache ? > > Yeah .. so long as its a default and tunable in /proc.
New day, new ideea. The original problem was that unpriviledged users can access it too often. How about exposing the MII registers as /dev entries? Then you can have normal access rights for them and no need to worry about frequency of access. Probably default would be 600 owned by root and for HA applications a user or a group can get read (or even write) access. It's up to the sysadmin to allow it, but has to be renewed after each boot. But I guess that this is not something to be applied to 2.2 and 2.4...
With clearer mind, I have to make some a correction to one of the previous messages: the problem of not checking arguments range does not apply to 3c59x which has in the ioctl function '& 0x1f' for both transceiver number and register number. However, eepro100 and tulip don't do that. (I'm checking now with 2.4.3 from Mandrake 8, but I don't think that there were recent changes in these areas).
-- Bogdan Costescu
IWR - Interdisziplinaeres Zentrum fuer Wissenschaftliches Rechnen Universitaet Heidelberg, INF 368, D-69120 Heidelberg, GERMANY Telephone: +49 6221 54 8869, Telefax: +49 6221 54 8868 E-mail: Bogdan.Costescu@IWR.Uni-Heidelberg.De
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