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[75.74.152.49]) by smtp.gmail.com with ESMTPSA id 956f58d0204a3-6503a824d30sm7075565d50.1.2026.04.06.19.58.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 06 Apr 2026 19:58:43 -0700 (PDT) From: Joshua Klinesmith To: linux-wireless@vger.kernel.org Cc: nbd@nbd.name, lorenzo@kernel.org, ryder.lee@mediatek.com, shayne.chen@mediatek.com, sean.wang@mediatek.com, Joshua Klinesmith Subject: [PATCH wireless v3] wifi: mt76: mt7915: set AMSDU parameters for WED v3 Date: Mon, 6 Apr 2026 22:58:37 -0400 Message-ID: <20260407025838.55455-1-joshuaklinesmith@gmail.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-wireless@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit On MT7988 (WED version 3), the WED hardware unconditionally enables the AMSDU aggregation engine. The engine uses wlan.amsdu_max_subframes and wlan.amsdu_max_len to configure aggregation limits. The mt7996 driver sets these to 8 and 1536 respectively, but the mt7915 driver never sets them, leaving both at zero. With the AMSDU engine active and zero-valued limits, the TX path is severely throttled, capping throughput at approximately 6 Mbps on MT7916 PCIe cards attached to MT7988 SoCs. Set amsdu_max_subframes and amsdu_max_len to the same values used by the mt7996 driver. Fixes: b230812b9dda ("net: ethernet: mtk_wed: introduce partial AMSDU offload support for MT7988") Signed-off-by: Joshua Klinesmith --- drivers/net/wireless/mediatek/mt76/mt7915/mmio.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mmio.c b/drivers/net/wireless/mediatek/mt76/mt7915/mmio.c index 2708b1556f40..f5fa81d3b264 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7915/mmio.c +++ b/drivers/net/wireless/mediatek/mt76/mt7915/mmio.c @@ -719,6 +719,9 @@ int mt7915_mmio_wed_init(struct mt7915_dev *dev, void *pdev_ptr, wed->wlan.reset = mt7915_mmio_wed_reset; wed->wlan.reset_complete = mt76_wed_reset_complete; + wed->wlan.amsdu_max_subframes = 8; + wed->wlan.amsdu_max_len = 1536; + dev->mt76.rx_token_size = wed->wlan.rx_npkt; if (mtk_wed_device_attach(wed)) -- 2.43.0