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Bug 22065 - consideration: MAX_ETH_CARDS upped?
consideration: MAX_ETH_CARDS upped?
Product: Red Hat Linux
Classification: Retired
Component: kernel (Show other bugs)
i386 Linux
low Severity medium
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Assigned To: Arjan van de Ven
Brock Organ
: FutureFeature
Depends On:
  Show dependency treegraph
Reported: 2000-12-11 11:40 EST by Pekka Savola
Modified: 2008-08-01 12:22 EDT (History)
1 user (show)

See Also:
Fixed In Version:
Doc Type: Enhancement
Doc Text:
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Clone Of:
Last Closed: 2004-09-30 11:38:52 EDT
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RHEL 7.3 requirements from Atomic Host:
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Description Pekka Savola 2000-12-11 11:40:37 EST
This only affects 2.2.x kernels.

By default, you cannot have more than 16 eth interfaces.  Using quad port cards, this
_does_ now and then become used up.

The limit is defined in drivers/net/net_init.c.

99.9% or so never need this, but for the record...  Anyway, I don't see _any harm_ in raising that to,
say, 32 if an updated kernel packages were to be issued.
Comment 1 Daniel Roesen 2000-12-11 13:42:14 EST
Hm, this could be a pitfall for people installing Red Hat with the RH kernel and
after enrolling their own kernel for some reasons get a kernel bailing out. This
modification would have to be documented somewhere obvious (perhaps in the
kernel dmesg output in boot phase).
Comment 2 Pekka Savola 2000-12-11 13:58:59 EST
People who roll their own kernels and own a system with >16 interfaces shouldn't
be surprised by things like these.. And there are a lot of patches (e.g. soft-raid) which would
get you into trouble if you didn't know what you're doing.  Taking too much care of
these would be an endless circle.
Comment 3 Daniel Roesen 2000-12-11 16:34:34 EST
Nod, you're absolutely right. Take my comment void. I vote for pumping up this
value too.
Comment 4 Bugzilla owner 2004-09-30 11:38:52 EDT
Thanks for the bug report. However, Red Hat no longer maintains this version of
the product. Please upgrade to the latest version and open a new bug if the problem

The Fedora Legacy project (http://fedoralegacy.org/) maintains some older releases, 
and if you believe this bug is interesting to them, please report the problem in
the bug tracker at: http://bugzilla.fedora.us/

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