From ff8c049891688131682ac0b7fb0ef55595b19898 Mon Sep 17 00:00:00 2001
From: Shayne Chen <shayne.chen@mediatek.com>
Date: Mon, 18 Oct 2021 16:09:41 +0800
Subject: [PATCH] mt76: mt7915: change max rx len limit of hw modules
Git-commit: ff8c049891688131682ac0b7fb0ef55595b19898
Patch-mainline: v5.16-rc1
References: bsc#1209980
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>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
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 727c529bfdea..4fa8e7ba93e6 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);
--
2.35.3