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Date:   Sun, 26 Apr 2020 11:26:08 -0600
From:   David Ahern <dsahern@...il.com>
To:     Roopa Prabhu <roopa@...ulusnetworks.com>, davem@...emloft.net
Cc:     netdev@...r.kernel.org, nikolay@...ulusnetworks.com,
        bpoirier@...ulusnetworks.com
Subject: Re: [PATCH net-next v2 2/3] ipv4: add sysctl for nexthop api
 compatibility mode

On 4/25/20 6:48 PM, Roopa Prabhu wrote:
> diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c
> index 81b267e..a613ecf 100644
> --- a/net/ipv4/sysctl_net_ipv4.c
> +++ b/net/ipv4/sysctl_net_ipv4.c
> @@ -711,6 +711,13 @@ static struct ctl_table ipv4_net_table[] = {
>  		.proc_handler   = proc_tcp_early_demux
>  	},
>  	{
> +		.procname       = "nexthop_compat_mode",
> +		.data           = &init_net.ipv4.sysctl_nexthop_compat_mode,
> +		.maxlen         = sizeof(int),
> +		.mode           = 0644,
> +		.proc_handler   = proc_dointvec
> +	},

I think you can make this a bool.

	.proc_handler   = proc_dointvec_minmax,
        .extra1         = SYSCTL_ZERO,
        .extra2         = SYSCTL_ONE,

rest looks good to me.

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