netdev - Re: [PATCH net-next 3/5] ipv4: support sport, dport and ip protocol in RTM

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Message-Id: <20180416.185855.2220085572245129235.davem@davemloft.net>
Date:   Mon, 16 Apr 2018 18:58:55 -0400 (EDT)
From:   David Miller <davem@...emloft.net>
To:     roopa@...ulusnetworks.com
Cc:     netdev@...r.kernel.org, dsa@...ulusnetworks.com
Subject: Re: [PATCH net-next 3/5] ipv4: support sport, dport and ip
 protocol in RTM_GETROUTE

From: Roopa Prabhu <roopa@...ulusnetworks.com>
Date: Mon, 16 Apr 2018 13:41:36 -0700

> diff --git a/include/uapi/linux/rtnetlink.h b/include/uapi/linux/rtnetlink.h
> index 9b15005..7947252 100644
> --- a/include/uapi/linux/rtnetlink.h
> +++ b/include/uapi/linux/rtnetlink.h
> @@ -327,6 +327,9 @@ enum rtattr_type_t {
>  	RTA_PAD,
>  	RTA_UID,
>  	RTA_TTL_PROPAGATE,
> +	RTA_SPORT,
> +	RTA_DPORT,
> +	RTA_IP_PROTO,
>  	__RTA_MAX
>  };
>  
> diff --git a/net/ipv4/route.c b/net/ipv4/route.c
> index ccb25d8..ae55711 100644
> --- a/net/ipv4/route.c
> +++ b/net/ipv4/route.c
> @@ -2663,6 +2663,18 @@ static int rt_fill_info(struct net *net,  __be32 dst, __be32 src, u32 table_id,
>  			from_kuid_munged(current_user_ns(), fl4->flowi4_uid)))
>  		goto nla_put_failure;
>  
> +	if (fl4->fl4_sport &&
> +	    nla_put_u16(skb, RTA_SPORT, ntohs(fl4->fl4_sport)))
> +		goto nla_put_failure;

The addreeses are given over netlink in network byte order, so let's
be consistent and do the same for the ports et al. as well.

Thanks.