netdev - Generating fragmented skb

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Message-ID: <AE90C24D6B3A694183C094C60CF0A2F6026B73E6@saturn3.aculab.com>
Date:	Wed, 6 Nov 2013 12:31:16 -0000
From:	"David Laight" <David.Laight@...LAB.COM>
To:	<netdev@...r.kernel.org>
Subject: Generating fragmented skb

What is the easiest way to generate fragmented skb?
I'm trying to test the xhci USB bulk code using a couple
of USB ethernet devices (smsc95xx and ax88179_178a).
I think the latter should support TCP segmentation offload.

FWIW some tests that seemed to imply the ax88179_178a needed
the ZLP avoidance code may have been caused because the
xhci driver completely ignored USB_ZETO_PACKET.

	David

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