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SubjectRe: [PATCH net-next] net: ipv6: add IFLA_RA_MTU to expose mtu value in the RA message
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On 7/29/21 3:02 AM, Rocco Yue wrote:
> diff --git a/include/uapi/linux/if_link.h b/include/uapi/linux/if_link.h
> index 4882e81514b6..ea6c872c5f2c 100644
> --- a/include/uapi/linux/if_link.h
> +++ b/include/uapi/linux/if_link.h
> @@ -347,7 +347,7 @@ enum {
> */
> IFLA_PARENT_DEV_NAME,
> IFLA_PARENT_DEV_BUS_NAME,
> -
> + IFLA_RA_MTU,
> __IFLA_MAX
> };
>
> diff --git a/include/uapi/linux/ipv6.h b/include/uapi/linux/ipv6.h
> index 70603775fe91..3dbcf212b766 100644
> --- a/include/uapi/linux/ipv6.h
> +++ b/include/uapi/linux/ipv6.h
> @@ -190,6 +190,7 @@ enum {
> DEVCONF_NDISC_TCLASS,
> DEVCONF_RPL_SEG_ENABLED,
> DEVCONF_RA_DEFRTR_METRIC,
> + DEVCONF_RA_MTU,
> DEVCONF_MAX
> };
>

you do not need both IFLA and DEVCONF. Drop the DEVCONF completely. IFLA
attribute can be used for both inspection and notification on change.

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