RE: [Linux-stm32] [PATCH] net: stmmac: remove the limitation of adding vlan in promisc mode

[Clark Wang]

Hi Ahmad,

> -----Original Message-----
> From: Ahmad Fatoum <a.fatoum@xxxxxxxxxxxxxx>
> Sent: 2023年4月3日 16:42
> To: Clark Wang <xiaoning.wang@xxxxxxx>; peppe.cavallaro@xxxxxx;
> alexandre.torgue@xxxxxxxxxxx; joabreu@xxxxxxxxxxxx;
> davem@xxxxxxxxxxxxx; edumazet@xxxxxxxxxx; kuba@xxxxxxxxxx;
> pabeni@xxxxxxxxxx; mcoquelin.stm32@xxxxxxxxx
> Cc: netdev@xxxxxxxxxxxxxxx; linux-stm32@xxxxxxxxxxxxxxxxxxxxxxxxxxxx;
> linux-arm-kernel@xxxxxxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx
> Subject: Re: [Linux-stm32] [PATCH] net: stmmac: remove the limitation of
> adding vlan in promisc mode
> 
> Hello Clark,
> 
> On 03.04.23 10:17, Clark Wang wrote:
> > When using brctl to add eqos to a bridge, it will frist set eqos to
> > promisc mode and then set a VLAN for this bridge with a filer VID
> > value of 1.
> >
> > These two error returns limit the use of brctl, resulting in the
> > inability of the bridge to be enabled on eqos. So remove them.
> >
> > Signed-off-by: Clark Wang <xiaoning.wang@xxxxxxx>
> 
> Please add a suitable Fixes: tag pointing at the commit introducing the
> regression.


Thanks. I will add it in V2.

Best Regards,
Clark Wang
> 
> Thanks,
> Ahmad
> 
> > ---
> >  drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c | 12 ------------
> >  1 file changed, 12 deletions(-)
> >
> > diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c
> > b/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c
> > index 8c7a0b7c9952..64bbe15a699e 100644
> > --- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c
> > +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c
> > @@ -472,12 +472,6 @@ static int dwmac4_add_hw_vlan_rx_fltr(struct
> net_device *dev,
> >  	if (vid > 4095)
> >  		return -EINVAL;
> >
> > -	if (hw->promisc) {
> > -		netdev_err(dev,
> > -			   "Adding VLAN in promisc mode not supported\n");
> > -		return -EPERM;
> > -	}
> > -
> >  	/* Single Rx VLAN Filter */
> >  	if (hw->num_vlan == 1) {
> >  		/* For single VLAN filter, VID 0 means VLAN promiscuous */ @@
> > -527,12 +521,6 @@ static int dwmac4_del_hw_vlan_rx_fltr(struct
> > net_device *dev,  {
> >  	int i, ret = 0;
> >
> > -	if (hw->promisc) {
> > -		netdev_err(dev,
> > -			   "Deleting VLAN in promisc mode not supported\n");
> > -		return -EPERM;
> > -	}
> > -
> >  	/* Single Rx VLAN Filter */
> >  	if (hw->num_vlan == 1) {
> >  		if ((hw->vlan_filter[0] & GMAC_VLAN_TAG_VID) == vid) {
> 
> --
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