netdev - Re: [PATCH net 1/2] net: ipv4: update fnhe

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Date:   Mon, 8 Oct 2018 11:18:49 -0600
From:   David Ahern <dsahern@...il.com>
To:     Sabrina Dubroca <sd@...asysnail.net>, netdev@...r.kernel.org
Cc:     Stefano Brivio <sbrivio@...hat.com>,
        Ido Schimmel <idosch@...sch.org>
Subject: Re: [PATCH net 1/2] net: ipv4: update fnhe_pmtu when first hop's MTU
 changes

On 10/8/18 6:36 AM, Sabrina Dubroca wrote:
> diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
> index c7861e4b402c..dc9d2668d9bb 100644
> --- a/include/linux/netdevice.h
> +++ b/include/linux/netdevice.h
> @@ -2458,6 +2458,13 @@ struct netdev_notifier_info {
>  	struct netlink_ext_ack	*extack;
>  };
>  
> +struct netdev_notifier_info_ext {
> +	struct netdev_notifier_info info; /* must be first */
> +	union {
> +		u32 u32;

I realize you want this to be generic, but that is a really odd
definition. can you make that mtu instead? the union allows other use
cases to add new names.

> +	} ext;
> +};
> +
>  struct netdev_notifier_change_info {
>  	struct netdev_notifier_info info; /* must be first */
>  	unsigned int flags_changed;