zero-copy parsing

"Junyoung Heo" <[email protected]>
Newsgroups gmane.network.tux
Message-ID <000101c30cd2$71acee90$8075a8c0@jyheo>
New TUX 2.x features contain 'zero-copy parsing'.
But, I cannot find any difference between TUX 1.0 and 2.0.
It looks like that both use tcp_recvmsg. And in this function, use
skb_copy.
Is something faulty in my idea?
Thanks for reading.
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