[Intel-wired-lan] [PATCH net v2 1/2] ixgbe: fix bcast packets Rx on VF after promisc removal

[Jankowski, Konrad0]

> -----Original Message-----
> From: Intel-wired-lan <intel-wired-lan-bounces at osuosl.org> On Behalf Of
> Olivier Matz
> Sent: Wednesday, April 6, 2022 11:53 AM
> To: netdev at vger.kernel.org
> Cc: Paul Menzel <pmenzel at molgen.mpg.de>; intel-wired-lan at osuosl.org;
> stable at vger.kernel.org; Jakub Kicinski <kuba at kernel.org>; Nicolas Dichtel
> <nicolas.dichtel at 6wind.com>; Paolo Abeni <pabeni at redhat.com>; David S .
> Miller <davem at davemloft.net>
> Subject: [Intel-wired-lan] [PATCH net v2 1/2] ixgbe: fix bcast packets Rx on VF
> after promisc removal
> 
> After a VF requested to remove the promiscuous flag on an interface, the
> broadcast packets are not received anymore. This breaks some protocols like
> ARP.
> 
> In ixgbe_update_vf_xcast_mode(), we should keep the IXGBE_VMOLR_BAM
> bit (Broadcast Accept) on promiscuous removal.
> 
> This flag is already set by default in ixgbe_set_vmolr() on VF reset.
> 
> Fixes: 8443c1a4b192 ("ixgbe, ixgbevf: Add new mbox API xcast mode")
> Cc: stable at vger.kernel.org
> Cc: Nicolas Dichtel <nicolas.dichtel at 6wind.com>
> Signed-off-by: Olivier Matz <olivier.matz at 6wind.com>
> ---
>  drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c
> b/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c
> index 7f11c0a8e7a9..8d108a78941b 100644
> --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c
> +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c
> @@ -1184,9 +1184,9 @@ static int ixgbe_update_vf_xcast_mode(struct

Tested-by: Konrad Jankowski <konrad0.jankowski at intel.com>