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Date:	Fri, 21 Mar 2014 12:07:32 +0100
From:	Thomas Graf <>
To:	Zoltan Kiss <>,
	Jesse Gross <>,,
CC:	"David S. Miller" <>,
	Pablo Neira Ayuso <>,
	Jozsef Kadlecsik <>,
	Eric Dumazet <>,
	Daniel Borkmann <>,
	Tom Herbert <>,
	Jason Wang <>,
	Florian Westphal <>, Joe Perches <>,
	Simon Horman <>,
	Jiri Pirko <>,
	"Michael S. Tsirkin" <>,
	Paul Durrant <>,
	Jan Beulich <>,
	Herbert Xu <>,
	Miklos Szeredi <>,,,,,,
Subject: Re: [PATCH v4] core, nfqueue, openvswitch: Orphan frags in skb_zerocopy
 and handle errors

On 03/21/2014 11:31 AM, Zoltan Kiss wrote:
> skb_zerocopy can copy elements of the frags array between skbs, but it doesn't
> orphan them. Also, it doesn't handle errors, so this patch takes care of that
> as well, and modify the callers accordingly. skb_tx_error() is also added to
> the callers so they will signal the failed delivery towards the creator of the
> skb.
> Signed-off-by: Zoltan Kiss <>
> ---
> v2: orphan the frags right before touching the frags
> v3:
> - orphan 'from' instead of 'to'
> - call skb_tx_error() in the callers if something went wrong
> v4: correctly use error path in queue_userspace_packet

LGTM now

Acked-by: Thomas Graf <>

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