Re: [PATCH 14/14] nfnetlink: add support for memory mapped netlink

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Hi,

On Wed, Apr 17, 2013 at 10:17 PM, Patrick McHardy <kaber@xxxxxxxxx> wrote:
>
> Signed-off-by: Patrick McHardy <kaber@xxxxxxxxx>
> ---
>  include/linux/netfilter/nfnetlink.h  |  2 ++
>  net/netfilter/nfnetlink.c            |  7 +++++++
>  net/netfilter/nfnetlink_log.c        | 10 ++++++----
>  net/netfilter/nfnetlink_queue_core.c |  3 ++-
>  4 files changed, 17 insertions(+), 5 deletions(-)
>
> diff --git a/net/netfilter/nfnetlink_queue_core.c b/net/netfilter/nfnetlink_queue_core.c
> index 5e280b3..ef3cdb4 100644
> --- a/net/netfilter/nfnetlink_queue_core.c
> +++ b/net/netfilter/nfnetlink_queue_core.c
> @@ -339,7 +339,8 @@ nfqnl_build_packet_message(struct nfqnl_instance *queue,
>         if (queue->flags & NFQA_CFG_F_CONNTRACK)
>                 ct = nfqnl_ct_get(entskb, &size, &ctinfo);
>
> -       skb = alloc_skb(size, GFP_ATOMIC);
> +       skb = nfnetlink_alloc_skb(&init_net, size, queue->peer_portid,
> +                                 GFP_ATOMIC);
>         if (!skb)
>                 return NULL;
>

does this mean that we have a true zero copy support with Eric D's
patch (nfnetlink_queue: zero-copy support) and this patch ?

Rgds,
Nishit Shah.
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