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SubjectRe: [PATCH] ipv6: create ra_mtu proc file to only record mtu in RA
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On Tue, 2021-06-01 at 18:38 -0600, David Ahern wrote:
On 6/1/21 3:16 AM, Rocco Yue wrote:
> > For this patch set, if RA message carries the mtu option,
> > "proc/sys/net/ipv6/conf/<iface>/ra_mtu" will be updated to the
> > mtu value carried in the last RA message received, and ra_mtu
> > is an independent proc file, which is not affected by the update
> > of interface mtu value.
>
> I am not a fan of more /proc/sys files.
>
> You are adding it to devconf which is good. You can add another link
> attribute, e.g., IFLA_RA_MTU, and have it returned on link queries.
>
> Make sure the attribute can not be sent in a NEWLINK or SETLINK request;
> it should be read-only for GETLINK.

Thanks for your review and advice.
Do you mean that I should keep the ra_mtu proc and add an another extra netlink msg?
Or only use netlink msg instead of ra_mtu proc?
I will do it.

Thanks,
Rocco

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