On 2018-11-09 14:42, Lorenzo Bianconi wrote:
>> On Fri, Nov 09, 2018 at 01:50:51PM +0100, Lorenzo Bianconi wrote:
>> > > On 2018-11-09 12:09, Lorenzo Bianconi wrote:
>> > > >> Use MT_MAC_APC_BSSID0_H_EN bit to indicatate we are
>> > > >> setting BSSID for STA.
>> > > >>
>> > > >> Signed-off-by: Stanislaw Gruszka <sgrus...@redhat.com>
>> > > >> ---
>> > > >> drivers/net/wireless/mediatek/mt76/mt76x02_mac.c | 12 +++++++++---
>> > > >> 1 file changed, 9 insertions(+), 3 deletions(-)
>> > > >>
>> > > >> diff --git a/drivers/net/wireless/mediatek/mt76/mt76x02_mac.c
>> > > >> b/drivers/net/wireless/mediatek/mt76/mt76x02_mac.c
>> > > >> index 59b336e34cb5..cfeae5586897 100644
>> > > >> --- a/drivers/net/wireless/mediatek/mt76/mt76x02_mac.c
>> > > >> +++ b/drivers/net/wireless/mediatek/mt76/mt76x02_mac.c
>> > > >> @@ -826,10 +826,16 @@ void mt76x02_mac_work(struct work_struct *work)
>> > > >>
>> > > >> void mt76x02_mac_set_bssid(struct mt76x02_dev *dev, u8 idx, const u8
>> > > >> *addr)
>> > > >> {
>> > > >> + u32 bssid_h = FIELD_PREP(MT_MAC_APC_BSSID_H_ADDR,
>> > > >> + get_unaligned_le16(addr + 4));
>> > > >> + u32 bssid_l = get_unaligned_le32(addr);
>> > > >> +
>> > > >> + if (idx > 7)
>> > > >> + bssid_h |= MT_MAC_APC_BSSID0_H_EN;
>> > > >
>> > > > This bit is to enable APClient mode and it is valid just for register
>> > > > 0x1094
>> > > > (MT_MAC_APC_BSSID_{L,h}(0)). Moreover IIRC APClient has been disabled
>> > > > because
>> > > > it causes a performance degradation.
>> > > The performance degradation was with MAC_ADDR_EXT, not AP-Client.
>> > > This patch should be fine.
>> >
>> > Ah, now I remember sorry, you are right :)
>> > Anyway IIRC MT_MAC_APC_BSSID0_H_EN is just for AP_CLIENT_BSSID0 (at least
>> > for
>> > 76x2), for others we need to use BIT(31) but just if APClient is disabled,
>> > right?
>> > Moreover BSSID filter is currently disabled (BIT(3) in RX_FILTER_CFG).
>> >
>> > # echo 0x1400 > /sys/kernel/debug/ieee80211/phy0/mt76/regidx
>> > # cat /sys/kernel/debug/ieee80211/phy0/mt76/regval
>> > 0x00017f97
>> >
>> > Have you tried to enabled it?
>>
>> I didn't try this yet, but I think it should be enabled to support
>> mulit BSS and MAC address change.
>
> I agree we can use multi-BSS for mac filtering in AP mode but my gut feeling
> in
> STA the hw uses the value in MT_MAC_ADDR_DW{0,1} for unicast packet filtering
> (BIT(2) in RX_FILTER_CFG). Moreover I think there is a relation between
> MT_MAC_ADDR_DW and BSSID values in multiAP mode.
I'm pretty sure that value also gets used for local ACK/BA filtering. We
definitely need to set it up properly.
In the past, I observed cases where a misconfigured MAC address led to
no tx status being reported anymore.
- Felix
