[PATCH v3 4/4] mt76: mt7915: change max rx len limit of hw modules
From: Shayne Chen <shayne.chen@mediatek.com>
Date: 2021-10-18 08:10:01
Also in:
linux-wireless
Subsystem:
mediatek mt76 wireless lan driver, the rest · Maintainers:
Felix Fietkau, Lorenzo Bianconi, Ryder Lee, Linus Torvalds
Update max rx len of some hw modules, which aligns out vendor SDK. In normal modes, we exchange MPDU 7991 cap with peers; however, this won't play a part in sniffer mode. To prevent packets which exceed the max MPDU size from entering specific rx path in hw, we need to set a proper limit to filter them out. Signed-off-by: Shayne Chen <shayne.chen@mediatek.com> --- drivers/net/wireless/mediatek/mt76/mt7915/init.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/init.c b/drivers/net/wireless/mediatek/mt76/mt7915/init.c
index 274b30a58f05..b77647b4575e 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/init.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/init.c@@ -386,7 +386,7 @@ mt7915_mac_init_band(struct mt7915_dev *dev, u8 band) FIELD_PREP(MT_MDP_RCFR1_RX_DROPPED_MCAST, MT_MDP_TO_HIF); mt76_rmw(dev, MT_MDP_BNRCFR1(band), mask, set); - mt76_rmw_field(dev, MT_DMA_DCR0(band), MT_DMA_DCR0_MAX_RX_LEN, 1536); + mt76_rmw_field(dev, MT_DMA_DCR0(band), MT_DMA_DCR0_MAX_RX_LEN, 0x680); /* disable rx rate report by default due to hw issues */ mt76_clear(dev, MT_DMA_DCR0(band), MT_DMA_DCR0_RXD_G5_EN); }
@@ -395,7 +395,7 @@ static void mt7915_mac_init(struct mt7915_dev *dev) { int i; - mt76_rmw_field(dev, MT_MDP_DCR1, MT_MDP_DCR1_MAX_RX_LEN, 1536); + mt76_rmw_field(dev, MT_MDP_DCR1, MT_MDP_DCR1_MAX_RX_LEN, 0x400); /* enable hardware de-agg */ mt76_set(dev, MT_MDP_DCR0, MT_MDP_DCR0_DAMSDU_EN);
--
2.29.2
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