netdev - RE: Handle new frag_list of frags GRO packets

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Message-ID: <AE90C24D6B3A694183C094C60CF0A2F6026B7400@saturn3.aculab.com>
Date:	Tue, 12 Nov 2013 10:12:36 -0000
From:	"David Laight" <David.Laight@...LAB.COM>
To:	"Herbert Xu" <herbert@...dor.apana.org.au>,
	"Eric Dumazet" <eric.dumazet@...il.com>
Cc:	"Ben Hutchings" <bhutchings@...arflare.com>,
	"David Miller" <davem@...emloft.net>,
	<christoph.paasch@...ouvain.be>, <netdev@...r.kernel.org>,
	<hkchu@...gle.com>, <mwdalton@...gle.com>
Subject: RE: Handle new frag_list of frags GRO packets

> Recently GRO started generating packets with frag_lists of frags.
> This was not handled by GSO, thus leading to a crash.

Is the build_dma_sg() code in net/usb/usbnet.c correct?
It creates a 'struct scatterlist' array for all the fragments
in and skb.

I'm not at clear of exactly how skb get put together.

	David
 


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