netdev - Re: [PATCH] TX_RING and packet mmap

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Message-ID: <7e0dd21a0904081406w31da460pe1c0c7153538f283@mail.gmail.com>
Date:	Wed, 8 Apr 2009 23:06:58 +0200
From:	Johann Baudy <johann.baudy@...-log.net>
To:	Evgeniy Polyakov <zbr@...emap.net>, jamal <hadi@...erus.ca>
Cc:	Herbert Xu <herbert@...dor.apana.org.au>, netdev@...r.kernel.org,
	"David S. Miller" <davem@...emloft.net>,
	Patrick McHardy <kaber@...sh.net>
Subject: Re: [PATCH] TX_RING and packet mmap

When you said "skb address", did you mean skb pointer value or
fragments data address?

If fragment data address, I can use first fragment page address to
deduce header address (in destructor)
As there is a constant offset between header address and data address.

However I'm afraid of issues once it is linearized.
Is there a sending path that will lose fragments info?

Best regards,
Johann
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