Re: [PATCH v2 bpf-next 01/10] ice: allow toggling loopback mode via ndo_set_features callback

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On Wed, Jun 15, 2022 at 04:47:40PM -0700, Jakub Kicinski wrote:
> On Tue, 14 Jun 2022 19:47:40 +0200 Maciej Fijalkowski wrote:
> > +	if (if_running)
> > +		ice_stop(netdev);
> > +	if (ice_aq_set_mac_loopback(&pf->hw, ena, NULL))
> > +		dev_err(ice_pf_to_dev(pf), "Failed to toggle loopback state\n");
> > +	if (if_running)
> > +		ice_open(netdev);
> 
> Loopback or not, I don't think we should be accepting the shutdown ->
> set config -> pray approach in modern drivers. ice_open() seems to be
> allocating all the Rx memory, and can fail.

They say that those who sing pray twice, so why don't we sing? :)

But seriously, I'll degrade this to ice_down/up and check retvals. I think
I just mimicked flow from ice_self_test(), which should be fixed as
well...

I'll send v4.



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