netdev - Re: [PATCH v5 2/7] ipv6 addrconf: remove addrconf_sysctl_hop

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Date:   Tue, 27 Sep 2016 19:18:22 +0900
From:   YOSHIFUJI Hideaki <hideaki.yoshifuji@...aclelinux.com>
To:     Maciej Żenczykowski <zenczykowski@...il.com>,
        Maciej Żenczykowski <maze@...gle.com>,
        "David S . Miller" <davem@...emloft.net>
Cc:     hideaki.yoshifuji@...aclelinux.com, netdev@...r.kernel.org,
        Erik Kline <ek@...gle.com>,
        Lorenzo Colitti <lorenzo@...gle.com>,
        Hannes Frederic Sowa <hannes@...essinduktion.org>
Subject: Re: [PATCH v5 2/7] ipv6 addrconf: remove addrconf_sysctl_hop_limit()

Hi,

Maciej Żenczykowski wrote:
> From: Maciej Żenczykowski <maze@...gle.com>
> 
> replace with extra1/2 magic
> 
> Signed-off-by: Maciej Żenczykowski <maze@...gle.com>
> ---
>  net/ipv6/addrconf.c | 21 ++++++---------------
>  1 file changed, 6 insertions(+), 15 deletions(-)
> 
> diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
> index 11fa1a5564d4..8bd2d06eefe7 100644
> --- a/net/ipv6/addrconf.c
> +++ b/net/ipv6/addrconf.c
> @@ -5467,20 +5467,6 @@ int addrconf_sysctl_forward(struct ctl_table *ctl, int write,
>  }
>  
>  static
> -int addrconf_sysctl_hop_limit(struct ctl_table *ctl, int write,
> -                              void __user *buffer, size_t *lenp, loff_t *ppos)
> -{
> -	struct ctl_table lctl;
> -	int min_hl = 1, max_hl = 255;
> -
> -	lctl = *ctl;
> -	lctl.extra1 = &min_hl;
> -	lctl.extra2 = &max_hl;
> -
> -	return proc_dointvec_minmax(&lctl, write, buffer, lenp, ppos);
> -}
> -
> -static
>  int addrconf_sysctl_mtu(struct ctl_table *ctl, int write,
>  			void __user *buffer, size_t *lenp, loff_t *ppos)
>  {
> @@ -5713,6 +5699,9 @@ int addrconf_sysctl_ignore_routes_with_linkdown(struct ctl_table *ctl,
>  	return ret;
>  }
>  
> +static const int one = 1;
> +static const int two_five_five = 255;
> +
>  static const struct ctl_table addrconf_sysctl[] = {
>  	{
>  		.procname	= "forwarding",
> @@ -5726,7 +5715,9 @@ static const struct ctl_table addrconf_sysctl[] = {
>  		.data		= &ipv6_devconf.hop_limit,
>  		.maxlen		= sizeof(int),
>  		.mode		= 0644,
> -		.proc_handler	= addrconf_sysctl_hop_limit,
> +		.proc_handler	= proc_dointvec_minmax,
> +		.extra1		= (void *)&one,
> +		.extra2		= (void *)&two_five_five,
>  	},
>  	{
>  		.procname	= "mtu",
> 

Please submit this in a different series of patches
(like 1/7).

--yoshfuji