On Sun, Apr 25, 2010 at 4:19 AM, <xiaohui....@intel.com> wrote:
> From: Xin Xiaohui <xiaohui....@intel.com>
>
> Signed-off-by: Xin Xiaohui <xiaohui....@intel.com>
> Signed-off-by: Zhao Yu <yzha...@gmail.com>
> Reviewed-by: Jeff Dike <jd...@linux.intel.com>
> ---
> include/linux/netdevice.h | 19 ++++++++++++++++++-
> 1 files changed, 18 insertions(+), 1 deletions(-)
>
> diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
> index c79a88b..bf79756 100644
> --- a/include/linux/netdevice.h
> +++ b/include/linux/netdevice.h
> @@ -530,6 +530,22 @@ struct netdev_queue {
> unsigned long tx_dropped;
> } ____cacheline_aligned_in_smp;
>
> +/* Add a structure in structure net_device, the new field is
> + * named as mp_port. It's for mediate passthru (zero-copy).
> + * It contains the capability for the net device driver,
> + * a socket, and an external buffer creator, external means
> + * skb buffer belongs to the device may not be allocated from
> + * kernel space.
> + */
> +struct mpassthru_port {
> + int hdr_len;
> + int data_len;
> + int npages;
> + unsigned flags;
> + struct socket *sock;
> + struct skb_external_page *(*ctor)(struct mpassthru_port *,
> + struct sk_buff *, int);
> +};
I tried searching around, but couldn't find where struct
skb_external_page is declared. Where is it?
Andy
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