Re: [RFC] hv_netvsc: safer orderly shutdown

On Mon, 13 Nov 2017 11:57:47 +0100
Vitaly Kuznetsov [off-list ref] wrote:

Stephen Hemminger [off-list ref] writes:

quoted

The NAPI disable is already handled by rndis close.  

Sorry, but I'm probably missing something: I can only see
netif_napi_del() call in netvsc_device_remove() but this happens much
later. And I don see us doing napi_disable() anywhere on the path.
But I'm probably missing something.

You need to keep NAPI running to handle transmit completions.
Disabling the Tx and Rx filter should keep spurious activity
away until the halt is done.