RE: [PATCH net-next] hyperv: Add handler for RNDIS_STATUS_NETWORK_CHANGE event

[Haiyang Zhang]

> -----Original Message-----
> From: Olaf Hering [mailto:olaf@xxxxxxxxx]
> Sent: Monday, June 23, 2014 12:27 PM
> To: Haiyang Zhang
> Cc: Greg KH; netdev@xxxxxxxxxxxxxxx; jasowang@xxxxxxxxxx; driverdev-
> devel@xxxxxxxxxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx;
> davem@xxxxxxxxxxxxx
> Subject: Re: [PATCH net-next] hyperv: Add handler for
> RNDIS_STATUS_NETWORK_CHANGE event
> 
> On Mon, Jun 23, Haiyang Zhang wrote:
> 
> > I have tried some possibilities, like IF_OPER_DORMANT then IF_OPER_UP
> > with
> > netdev_state_change() etc. but not able to trigger DHCP review. I will
> > look at this further...
> 
> Is there a link down/up event anyway?
> If the interface is configured to "on hotplug" or "on cable plugged in"
> or whatever the setting name is, the network scripts should do something. Even
> if its not a DHCP renew.

Yes, there is a link down/up event from the host, we currently call netif_carrier_off() 
/ netif_carrier_on() with these events. Will hotplug scripts be triggered by 
netif_carrier_off/on? Where are the scripts located at (SLES)?

> 
> > So, what's the equivalent or similar command to "network restart" on
> > SLES12? Could you update the command line for the usermodehelper when
> > porting this patch to SLES 12?
> 
> I see a /sbin/rcnetwork in SLES, which links either to '/etc/init.d/network' or
> 'service'. This could be used as a quick workaround.

Thanks for the info!

Thanks,
- Haiyang