netdev - Re: [PATCH net] ice: Fix broken IFF

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Date:   Fri, 25 Mar 2022 13:53:37 +0100
From:   Ivan Vecera <ivecera@...hat.com>
To:     Marcin Szycik <marcin.szycik@...ux.intel.com>
Cc:     netdev@...r.kernel.org, poros@...hat.com, mschmidt@...hat.com,
        Jesse Brandeburg <jesse.brandeburg@...el.com>,
        Tony Nguyen <anthony.l.nguyen@...el.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Jeff Kirsher <jeffrey.t.kirsher@...el.com>,
        Akeem G Abodunrin <akeem.g.abodunrin@...el.com>,
        Anirudh Venkataramanan <anirudh.venkataramanan@...el.com>,
        "moderated list:INTEL ETHERNET DRIVERS" 
        <intel-wired-lan@...ts.osuosl.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH net] ice: Fix broken IFF_ALLMULTI handling

On Wed, 23 Mar 2022 21:05:20 +0100
Marcin Szycik <marcin.szycik@...ux.intel.com> wrote:

> > @@ -352,29 +359,15 @@ static int ice_vsi_sync_fltr(struct ice_vsi *vsi)
> >  	/* check for changes in promiscuous modes */
> >  	if (changed_flags & IFF_ALLMULTI) {
> >  		if (vsi->current_netdev_flags & IFF_ALLMULTI) {
> > -			if (vsi->num_vlan > 1)
> > -				promisc_m = ICE_MCAST_VLAN_PROMISC_BITS;
> > -			else
> > -				promisc_m = ICE_MCAST_PROMISC_BITS;  
> 
> Because `ice_{set,clear}_promisc()` are now always called with the same second argument (ICE_MCAST_PROMISC_BITS), wouldn't it be better to remove the arg and instead call `ice_fltr_{clear,set}_{vlan,vsi}_vsi_promisc()` with either ICE_MCAST_VLAN_PROMISC_BITS or ICE_MCAST_PROMISC_BITS inside the function?

Because ice_{set,clear}_promisc() then could be used only for set mcast prosmisc mode so I modified them only to automatically insert ICE_PROMISC_VLAN_RX & ICE_PROMISC_VLAN_TX based on vsi->num_vlan value.

Anyway I will fix some objections from Jacob and send v2.

Thanks,
Ivan