Re: [patch net-next 0/4] net: allow to change carrier from userspace

On Wed, 12 Dec 2012 11:58:03 +0100
Jiri Pirko [off-list ref] wrote:

This is basically a repost of my previous patchset:
"[patch net-next-2.6 0/2] net: allow to change carrier via sysfs" from Aug 30

The way net-sysfs stores values changed and this patchset reflects it.
Also, I exposed carrier via rtnetlink iface.

So far, only dummy driver uses carrier change ndo. In very near future
team driver will use that as well.

Jiri Pirko (4):
  net: add change_carrier netdev op
  net: allow to change carrier via sysfs
  rtnl: expose carrier value with possibility to set it
  dummy: implement carrier change

 drivers/net/dummy.c          | 10 ++++++++++
 include/linux/netdevice.h    |  7 +++++++
 include/uapi/linux/if_link.h |  1 +
 net/core/dev.c               | 19 +++++++++++++++++++
 net/core/net-sysfs.c         | 15 ++++++++++++++-
 net/core/rtnetlink.c         | 10 ++++++++++
 6 files changed, 61 insertions(+), 1 deletion(-)

I needed to do the same thing for a project we are working on and discovered
that there already is a working documented interface for doing that via
operstate mode. Therefore I can't recommend that the additional complexity
of a new API for this is required.