Re: [PATCH 1/4] net: if_arp: add ARPHRD_PUREIP type

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On Wed, Jun 23, 2021 at 07:34:49PM +0800, Rocco Yue wrote:
> This patch add the definition of ARPHRD_PUREIP which can for
> example be used by mobile ccmni device as device type.
> ARPHRD_PUREIP means that this device doesn't need kernel to
> generate ipv6 link-local address in any addr_gen_mode.
> 
> Signed-off-by: Rocco Yue <rocco.yue@xxxxxxxxxxxx>
> ---
>  include/uapi/linux/if_arp.h | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/include/uapi/linux/if_arp.h b/include/uapi/linux/if_arp.h
> index c3cc5a9e5eaf..4463c9e9e8b4 100644
> --- a/include/uapi/linux/if_arp.h
> +++ b/include/uapi/linux/if_arp.h
> @@ -61,6 +61,7 @@
>  #define ARPHRD_DDCMP    517		/* Digital's DDCMP protocol     */
>  #define ARPHRD_RAWHDLC	518		/* Raw HDLC			*/
>  #define ARPHRD_RAWIP    519		/* Raw IP                       */
> +#define ARPHRD_PUREIP	520		/* Pure IP			*/

In looking at the patches, what differs "PUREIP" from "RAWIP"?  It seems
to be the same to me.  If they are different, where is that documented?

thanks,

greg k-h



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