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From: David Miller <davem@davemloft.net>
Subject: Re: [patch 1/3] [PATCH] qeth: HiperSockets Network Traffic Analyzer
Date: Tue, 12 Jan 2010 04:59:44 -0800 (PST)
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From: Ursula Braun <ubraun@linux.vnet.ibm.com>
Date: Tue, 12 Jan 2010 13:25:31 +0100

> Sounds like a good idea, but there exists a qeth-specific problem if
> sniffer configuration should be switched to ethtool: Ethtool requires
> the existence of the network interface for the network device. The
> network interface for s390 network devices is defined within an
> s390-specific initialization step called "online setting". The sniffing
> characteristic must be configured before the online setting of the
> device, since NTA-specific initialization steps are necessary. At that
> point of time we cannot make use of ethtool, because the network
> interface name is not known yet. That means switching to your proposed
> ethtool-based configuration mechanism for HS NTA would result in an
> additional major rework of qeth device setup.

If you have a place to stick sysfs nodes, you've obviously
instantiated the device already.