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mt76: mt7915: disable RX_HDR_TRANS_SHORT 

This patch disables RX_TRANS_SHORT to make MDP to do header translation
when payload less than 8 bytes, hence the (QoS) null data can be encapsulated
to 802.3 format. However, WDS requires (QoS) null data in 802.11 format
to created vlan AP interfaces.

Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: lian.chen <lian.chen@mediatek.com>
Signed-off-by: Sujuan Chen <sujuan.chen@mediatek.com>
Signed-off-by: Bo Jiao <Bo.Jiao@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Bo Jiao 2022-04-20 15:11:44 +08:00 committed by Felix Fietkau
parent b61cc2a76b
commit 46f6adbfce
3 changed files with 6 additions and 4 deletions
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3
drivers/net/wireless/mediatek/mt76/mt7915/init.c
View File

@ -450,6 +450,9 @@ static void mt7915_mac_init(struct mt7915_dev *dev)
mt76_rmw_field(dev, MT_MDP_DCR1, MT_MDP_DCR1_MAX_RX_LEN, rx_len);
if (!is_mt7915(&dev->mt76))
mt76_clear(dev, MT_MDP_DCR2, MT_MDP_DCR2_RX_TRANS_SHORT);
/* enable hardware de-agg */
mt76_set(dev, MT_MDP_DCR0, MT_MDP_DCR0_DAMSDU_EN);

4
drivers/net/wireless/mediatek/mt76/mt7915/mac.c
View File

@ -837,10 +837,6 @@ mt7915_mac_fill_rx(struct mt7915_dev *dev, struct sk_buff *skb)
if (!status->wcid || !ieee80211_is_data_qos(fc))
return 0;
/* drop no data frame */
if (fc & cpu_to_le16(IEEE80211_STYPE_NULLFUNC))
return -EINVAL;
status->aggr = unicast &&
!ieee80211_is_qos_nullfunc(fc);
status->qos_ctl = qos_ctl;

3
drivers/net/wireless/mediatek/mt76/mt7915/regs.h
View File

@ -158,6 +158,9 @@ enum offs_rev {
#define MT_MDP_DCR1 MT_MDP(0x004)
#define MT_MDP_DCR1_MAX_RX_LEN GENMASK(15, 3)
#define MT_MDP_DCR2 MT_MDP(0x0e8)
#define MT_MDP_DCR2_RX_TRANS_SHORT BIT(2)
#define MT_MDP_BNRCFR0(_band) MT_MDP(__OFFS(MDP_BNRCFR0) + \
((_band) << 8))
#define MT_MDP_RCFR0_MCU_RX_MGMT GENMASK(5, 4)