From: Chris Leech <christopher.leech@intel.com>
Date: 06 Feb 2003 11:22:51 -0800
I fail to see how the statement "skb->len + skb->data_len" has any
usable meaning, or how it can be anything other than a bug.
This equation is the standard way to find the full length
on any skb. For linear skbs, data_len is always zero.
I asked Alan to use this formula so that greps on the source
tree would always show data_len being taken into account, and
thus usage would be consistent.
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