netdev - A couple of questions about the SKB fragments

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Date:	Thu, 5 May 2016 10:40:01 +0300
From:	Ilya Matveychikov <matvejchikov@...il.com>
To:	netdev@...r.kernel.org
Cc:	Aleksey.Baulin@...il.com
Subject: A couple of questions about the SKB fragments

Hello folks,

While working with fragmented SKBs we've got stuck with the following:
- is it possible for an SKB fragment in skb_shinfo(skb)->frag_list to
be fragmented too (i.e. to have SKBs in frag_list)?
- do skb->len and skb->data_len contain the whole SKB length,
including the length of all fragments (not only the paged parts)?

Is there any docs except the kernel sources itself to refer to?

Thanks.