netdev - Re: [PATCH net-next 7/8] net: ipv4: RTM_GETROUTE: return matched fib result when requested

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Date:   Wed, 24 May 2017 20:16:33 -0600
From:   David Ahern <dsahern@...il.com>
To:     Roopa Prabhu <roopa@...ulusnetworks.com>, davem@...emloft.net
Cc:     netdev@...r.kernel.org, nikolay@...ulusnetworks.com
Subject: Re: [PATCH net-next 7/8] net: ipv4: RTM_GETROUTE: return matched fib
 result when requested

On 5/24/17 12:19 PM, Roopa Prabhu wrote:

> @@ -2746,8 +2748,15 @@ static int inet_rtm_getroute(struct sk_buff *in_skb, struct nlmsghdr *nlh,
>  	if (rtm->rtm_flags & RTM_F_LOOKUP_TABLE)
>  		table_id = rt->rt_table_id;
>  
> -	err = rt_fill_info(net, dst, src, table_id, &fl4, skb,
> -			   NETLINK_CB(in_skb).portid, nlh->nlmsg_seq, rt);
> +	if (rtm->rtm_flags & RTM_F_FIB_MATCH)
> +		err = fib_dump_info(skb, NETLINK_CB(in_skb).portid,
> +				    nlh->nlmsg_seq, RTM_NEWROUTE, table_id,
> +				    rt->rt_type, res.prefix, res.prefixlen,
> +				    fl4.flowi4_tos, res.fi, 0);

I like this part -- much simpler than duplicating the attributes which
is where I was headed.