Re: [PATCH net-next] hv_netvsc: Increase delay for RNDIS_STATUS_NETWORK_CHANGE

From: Haiyang Zhang <haiyangz@microsoft.com>
Date: Tue,  2 Feb 2016 16:15:56 -0800

We simulates a link down period for RNDIS_STATUS_NETWORK_CHANGE message to
trigger DHCP renew. User daemons may need multiple seconds to trigger the
link down event. (e.g. ifplugd: 5sec, network-manager: 4sec.) So update
this link down period to 10 sec to properly trigger DHCP renew.

Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>

Two things look really bad about this to me:

1) Any value you choose is arbitrary.  If some new network configuration daemon
   is slower, you will have to change this value again.

   This is _NOT_ sustainable in the long term.

2) It is completely unclear to me why this driver needs to delay at all or
   wait for anything.  I see no other driver having to deal with this issue.

Until you address both of these points I am not going to apply this patch.

Thanks.