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Date:   Wed, 13 Dec 2017 13:05:04 +0300
From:   Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
To:     Phil Dibowitz <phil@...m.com>, netdev@...r.kernel.org
Cc:     phild@...com
Subject: Re: [PATCH iproute2] Show 'external' link mode in output

Hello!

On 12/12/2017 11:23 PM, Phil Dibowitz wrote:

> Recently `external` support was added to the tunnel drivers, but there is no way
> to introspect this from userspace. This adds support for that.
> 
> Now `ip -details link` shows it:
> 
> ```
> 7: tunl60@...E: <NOARP> mtu 1452 qdisc noop state DOWN mode DEFAULT group
> default qlen 1
>      link/tunnel6 :: brd :: promiscuity 0
>      ip6tnl external any remote :: local :: encaplimit 0 hoplimit 0 tclass 0x00 flowlabel 0x00000 (flowinfo 0x00000000) addrgenmode eui64 numtxqueues 1 numrxqueues 1 gso_max_size 65536 gso_max_segs 65535
> ```
> 
> Signed-off-by: Phil Dibowitz <phil@...m.com>
> ---
>   ip/link_ip6tnl.c | 3 +++
>   ip/link_iptnl.c  | 3 +++
>   2 files changed, 6 insertions(+)
> 
> diff --git a/ip/link_ip6tnl.c b/ip/link_ip6tnl.c
> index 43287ab..5d0efc8 100644
> --- a/ip/link_ip6tnl.c
> +++ b/ip/link_ip6tnl.c
> @@ -345,6 +345,9 @@ static void ip6tunnel_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb
>   	if (!tb)
>   		return;
>   
> +        if (tb[IFLA_IPTUN_COLLECT_METADATA])
> +                print_bool(PRINT_ANY, "external", "external ", true);
> +

   The original code is indented with tabs, you're using spaces. Not good. :-)

>   	if (tb[IFLA_IPTUN_FLAGS])
>   		flags = rta_getattr_u32(tb[IFLA_IPTUN_FLAGS]);
>   
> diff --git a/ip/link_iptnl.c b/ip/link_iptnl.c
> index 4940b8b..e345b5c 100644
> --- a/ip/link_iptnl.c
> +++ b/ip/link_iptnl.c
> @@ -393,6 +393,9 @@ static void iptunnel_print_opt(struct link_util *lu, FILE *f, struct rtattr *tb[
>   	if (!tb)
>   		return;
>   
> +        if (tb[IFLA_IPTUN_COLLECT_METADATA])
> +                print_bool(PRINT_ANY, "external", "external ", true);
> +
>   	if (tb[IFLA_IPTUN_REMOTE]) {
>   		unsigned int addr = rta_getattr_u32(tb[IFLA_IPTUN_REMOTE]);
>   

     Here as well...

MBR, Sergei

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