[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 at pengutronix.de>
> Sent: 2023年4月3日 16:42
> To: Clark Wang <xiaoning.wang at nxp.com>; peppe.cavallaro at st.com;
> alexandre.torgue at foss.st.com; joabreu at synopsys.com;
> davem at davemloft.net; edumazet at google.com; kuba at kernel.org;
> pabeni at redhat.com; mcoquelin.stm32 at gmail.com
> Cc: netdev at vger.kernel.org; linux-stm32 at st-md-mailman.stormreply.com;
> linux-arm-kernel at lists.infradead.org; linux-kernel at vger.kernel.org
> 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 at nxp.com>
> 
> 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) {
> 
> --
> Pengutronix e.K.                           |
> |
> Steuerwalder Str. 21                       |
> https://eur01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.pe
> ngutronix.de%2F&data=05%7C01%7Cxiaoning.wang%40nxp.com%7C3fccb853
> 586d4904486908db341f4882%7C686ea1d3bc2b4c6fa92cd99c5c301635%7C0%
> 7C0%7C638161081182421273%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4w
> LjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C
> %7C%7C&sdata=UoMfM69d4Y5OI7ant5UNlNCl81tls45On6hsZQeZZH8%3D&r
> eserved=0  |
> 31137 Hildesheim, Germany                  | Phone: +49-5121-206917-0
> |
> Amtsgericht Hildesheim, HRA 2686           | Fax:
> +49-5121-206917-5555 |