[Intel-wired-lan] [PATCH net-next v2 4/4] i40e: Fix race condition while adding/deleting MAC/VLAN filters

[G, GurucharanX]

> -----Original Message-----
> From: Intel-wired-lan <intel-wired-lan-bounces at osuosl.org> On Behalf Of
> Jagielski, Jedrzej
> Sent: Friday, January 14, 2022 6:50 PM
> To: intel-wired-lan at lists.osuosl.org
> Cc: Sylwester Dziedziuch <sylwesterx.dziedziuch at intel.com>; Jagielski,
> Jedrzej <jedrzej.jagielski at intel.com>
> Subject: [Intel-wired-lan] [PATCH net-next v2 4/4] i40e: Fix race condition
> while adding/deleting MAC/VLAN filters
> 
> From: Jedrzej Jagielski <jedrzej.jagielski at intel.com>
> 
> There was a race condition in access to hw->aq.asq_last_status while adding
> and deleting  MAC/VLAN filters causing incorrect error status to be printed as
> ERROR OK instead of the correct error.
> 
> Change calls to i40e_aq_add_macvlan in i40e_aqc_add_filters and
> i40e_aq_remove_macvlan in i40e_aqc_del_filters to  _v2 versions that
> return Admin Queue status on the stack to avoid race conditions in access to
> hw->aq.asq_last_status.
> 
> Fixes: 0093631966aa ("i40e: remove duplicate add/delete adminq command
> code for filters")
> Signed-off-by: Sylwester Dziedziuch <sylwesterx.dziedziuch at intel.com>
> Signed-off-by: Jedrzej Jagielski <jedrzej.jagielski at intel.com>
> ---
>  drivers/net/ethernet/intel/i40e/i40e_main.c | 24 +++++++++++----------
>  1 file changed, 13 insertions(+), 11 deletions(-)
> 

Tested-by: Gurucharan G <gurucharanx.g at intel.com> (A Contingent worker at Intel)