netdev - Re: [PATCH] veth: Showing peer of veth type dev in ip link (kernel side)

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Message-ID: <20131004105549.36184810@nehalam.linuxnetplumber.net>
Date:	Fri, 4 Oct 2013 10:55:49 -0700
From:	Stephen Hemminger <stephen@...workplumber.org>
To:	Masatake YAMATO <yamato@...hat.com>
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH] veth: Showing peer of veth type dev in ip link (kernel
 side)

On Fri,  4 Oct 2013 13:05:29 +0900
Masatake YAMATO <yamato@...hat.com> wrote:

> ip link has ability to show extra information of net work device if
> kernel provides sunh information. With this patch veth driver can
> provide its peer ifindex information to ip command via netlink
> interface.
> 
> Signed-off-by: Masatake YAMATO <yamato@...hat.com>
> ---

netlink API's are supposed to be symmetrical.

When creating veth, the VETH_INFO_PEER attribute is struct(ifinfomsg).
The fill_info should tack on the same data.
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