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To: Christoph Hellwig <hch@infradead.org>
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From: Roland Dreier <roland@topspin.com>
Date: Mon, 22 Nov 2004 07:41:47 -0800
In-Reply-To: <20041122153144.GA4821@infradead.org> (Christoph Hellwig's
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    Christoph> Any reason this doesn't use an interface similar to the
    Christoph> normal vlan code?

The normal vlan code uses an ioctl().  I thought a simple sysfs
interface would be more palatable than a new socket ioctl.

    Christoph> And what is a P_Key?

It is a 16-bit identifier carried by IB packets that says which
partition the packet is in.  End ports have P_Key tables that list
which partitions they are members of (a port can be a member of one or
more partitions, and can only receive packets from that partition).

 - Roland
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