netdev - Re: SKB paged fragment lifecycle on receive

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20110624.132754.1342293081627931354.davem@davemloft.net>
Date:	Fri, 24 Jun 2011 13:27:54 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	jeremy@...p.org
Cc:	eric.dumazet@...il.com, Ian.Campbell@...rix.com,
	netdev@...r.kernel.org, xen-devel@...ts.xensource.com,
	rusty@...tcorp.com.au
Subject: Re: SKB paged fragment lifecycle on receive

From: Jeremy Fitzhardinge <jeremy@...p.org>
Date: Fri, 24 Jun 2011 13:11:59 -0700

> Are the pages still attached to the first skb, or are they transferred
> completely?

In this case they are transferred completely, the refcount isn't
modified at all.

There are cases where partial transfers occur, and in such cases
the refcount is modified.  Just swim around in net/core/skbuff.c
you'll find them :-)


--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html