netdev - Re: [PATCH net v2] ice: Fix MAC address setting

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Date:   Wed, 30 Mar 2022 14:18:35 +0200
From:   Alexander Lobakin <alexandr.lobakin@...el.com>
To:     "David S. Miller" <davem@...emloft.net>,
        "Jakub Kicinski" <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>
Cc:     Alexander Lobakin <alexandr.lobakin@...el.com>,
        Jacob Keller <jacob.e.keller@...el.com>,
        ivecera <ivecera@...hat.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        poros <poros@...hat.com>, mschmidt <mschmidt@...hat.com>,
        Jesse Brandeburg <jesse.brandeburg@...el.com>,
        Tony Nguyen <anthony.l.nguyen@...el.com>,
        "moderated list:INTEL ETHERNET DRIVERS" 
        <intel-wired-lan@...ts.osuosl.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH net v2] ice: Fix MAC address setting

From: Jacob Keller <jacob.e.keller@...el.com>
Date: Mon, 28 Mar 2022 17:53:19 +0000

Hey netdev maintainers,

> > -----Original Message-----
> > From: Ivan Vecera <ivecera@...hat.com>
> > Sent: Friday, March 25, 2022 6:25 AM
> > To: netdev@...r.kernel.org
> > Cc: poros <poros@...hat.com>; mschmidt <mschmidt@...hat.com>;
> > Brandeburg, Jesse <jesse.brandeburg@...el.com>; Nguyen, Anthony L
> > <anthony.l.nguyen@...el.com>; David S. Miller <davem@...emloft.net>; Jakub
> > Kicinski <kuba@...nel.org>; Paolo Abeni <pabeni@...hat.com>; moderated
> > list:INTEL ETHERNET DRIVERS <intel-wired-lan@...ts.osuosl.org>; open list <linux-
> > kernel@...r.kernel.org>
> > Subject: [PATCH net v2] ice: Fix MAC address setting
> > 
> > Commit 2ccc1c1ccc671b ("ice: Remove excess error variables") merged
> > the usage of 'status' and 'err' variables into single one in
> > function ice_set_mac_address(). Unfortunately this causes
> > a regression when call of ice_fltr_add_mac() returns -EEXIST because
> > this return value does not indicate an error in this case but
> > value of 'err' remains to be -EEXIST till the end of the function
> > and is returned to caller.
> > 
> > Prior mentioned commit this does not happen because return value of
> > ice_fltr_add_mac() was stored to 'status' variable first and
> > if it was -EEXIST then 'err' remains to be zero.
> > 
> > Fix the problem by reset 'err' to zero when ice_fltr_add_mac()
> > returns -EEXIST.
> > 
> > Fixes: 2ccc1c1ccc671b ("ice: Remove excess error variables")
> > Signed-off-by: Ivan Vecera <ivecera@...hat.com>
> > ---
> 
> Thanks for the v2. This looks great. Good analysis of how this happened in the commit message, I appreciate that.
> 
> Reviewed-by: Jacob Keller <jacob.e.keller@...el.com>

This is an urgent fix, so we would like it to go through -net, not
IWL.
It has this Reviewed-by, and also

Acked-by: Alexander Lobakin <alexandr.lobakin@...el.com>

> 
> >  drivers/net/ethernet/intel/ice/ice_main.c | 7 +++++--
> >  1 file changed, 5 insertions(+), 2 deletions(-)
> > 

--- 8< ---

> > --
> > 2.34.1

Thanks,
Al