netdev - Re: [PATCH net-next 4/4] netns: enable to dump full nsid translation table

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Date:   Wed, 21 Nov 2018 11:09:07 -0700
From:   David Ahern <dsahern@...il.com>
To:     Nicolas Dichtel <nicolas.dichtel@...nd.com>, davem@...emloft.net
Cc:     netdev@...r.kernel.org
Subject: Re: [PATCH net-next 4/4] netns: enable to dump full nsid translation
 table

On 11/21/18 4:01 AM, Nicolas Dichtel wrote:
> diff --git a/net/core/net_namespace.c b/net/core/net_namespace.c
> index 92730905886c..fc568cd0b560 100644
> --- a/net/core/net_namespace.c
> +++ b/net/core/net_namespace.c
> @@ -740,7 +740,7 @@ static int rtnl_net_get_size(void)
>  }
>  
>  static int rtnl_net_fill(struct sk_buff *skb, u32 portid, u32 seq, int flags,
> -			 int cmd, int nsid)
> +			 int cmd, int nsid, bool add_ref, int ref_nsid)
>  {
>  	struct nlmsghdr *nlh;
>  	struct rtgenmsg *rth;
> @@ -755,6 +755,9 @@ static int rtnl_net_fill(struct sk_buff *skb, u32 portid, u32 seq, int flags,
>  	if (nla_put_s32(skb, NETNSA_NSID, nsid))
>  		goto nla_put_failure;
>  
> +	if (add_ref && nla_put_s32(skb, NETNSA_CURRENT_NSID, ref_nsid))
> +		goto nla_put_failure;

Why not use ref_nsid >= 0 and drop the add_ref argument?