From nobody Sat Feb 7 19:41:04 2026 Received: from mx3.wp.pl (mx3.wp.pl [212.77.101.9]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A3AB922B8B0 for ; Sun, 19 Oct 2025 15:53:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=212.77.101.9 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760889217; cv=none; b=sM/2goZfCO+RmU+4x63JEgJvvutitpxlclXrOcieMv0Olz805bjNqcrbNNYvCf+bHZ4M42gf22i/n1uCLNgTZc/Xv3JbgQ4YDhTWiwZkclLr2DBSxActFHodfuLOUk+yfxxtGMe6krgWsQppqetdziKWx+dcp/aP/Olu64bTOu8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760889217; c=relaxed/simple; bh=7l7+12vQYvSeBq2K5mDS3VblcW6ZAMVLD6keL9mR3Rs=; h=From:To:Subject:Date:Message-ID:MIME-Version; b=NCtst8rT65vZFOcnTHkO/hfWKMvvvjscW4fK6kLhLoGE6n6AZr9urfRDOVZ2rOr+jwKi3FHIIMFAIYdKt9j236MTlQQtrxM834Z0UOsC0GWktSQ5nDbg+NTKPngXhtnSLmkxvGajjIk+Z3SCjeFS7F9KElxW2A3p3cTItVLVXQQ= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=wp.pl; spf=pass smtp.mailfrom=wp.pl; dkim=pass (2048-bit key) header.d=wp.pl header.i=@wp.pl header.b=yupk4sHB; arc=none smtp.client-ip=212.77.101.9 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=wp.pl Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=wp.pl Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=wp.pl header.i=@wp.pl header.b="yupk4sHB" Received: (wp-smtpd smtp.wp.pl 3996 invoked from network); 19 Oct 2025 17:53:20 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=wp.pl; s=20241105; t=1760889200; bh=x6WS4gSSC3cojCRavBWi/OUmPz/su/Y/sBe19ZDjBWE=; h=From:To:Subject; b=yupk4sHBX13usKKR0MDf4qQStF4MPIXIO+VA7RorDCUj06lUA/TBVTYQJGIJZuuCo e0Vb1SYDh7LjFfbS+bndEFkJnY29BlqgkZB7IdEd81B4VGeuOrBq/yehGpmIETXAu5 QQ+LKnfdgeG4SFZzS9oZH9qgrX3Deia3rbjOq3I9qXom4/yhNsCmfave45ojIJhZ3+ gg9DonnA4F/7XBoYqKMuGP8hZ30NswO4LhZDSm5xeeZeD7xr8Qu4lAOxKh/R9iAJmd xl8vGZA6jui6tZQrf9pk0p0DXUkvjxB7QW4iyyZtjXDingwE11gM75dq+ntA+W63KN 28h6eOIJGhzEg== Received: from 83.24.149.147.ipv4.supernova.orange.pl (HELO laptop-olek.home) (olek2@wp.pl@[83.24.149.147]) (envelope-sender ) by smtp.wp.pl (WP-SMTPD) with ECDHE-RSA-AES256-GCM-SHA384 encrypted SMTP for ; 19 Oct 2025 17:53:20 +0200 From: Aleksander Jan Bajkowski To: nbd@nbd.name, lorenzo@kernel.org, ryder.lee@mediatek.com, shayne.chen@mediatek.com, sean.wang@mediatek.com, matthias.bgg@gmail.com, angelogioacchino.delregno@collabora.com, howard-yh.hsu@mediatek.com, StanleyYP.Wang@mediatek.com, rosenp@gmail.com, luoxueqin@kylinos.cn, chad@monroe.io, olek2@wp.pl, linux-wireless@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org Subject: [PATCH] wifi: mt76: add tx checksum offload for mt7915, mt7921, mt7981 and mt7986 Date: Sun, 19 Oct 2025 17:51:55 +0200 Message-ID: <20251019155316.3537185-1-olek2@wp.pl> X-Mailer: git-send-email 2.47.3 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-WP-MailID: 20b9a344b7368db3f41473995158abfd X-WP-AV: skaner antywirusowy Poczty Wirtualnej Polski X-WP-SPAM: NO 0000000 [UcNU] Content-Type: text/plain; charset="utf-8" Supports IPv4 and IPv6 TCP + UDP In various tests between MT7986 and Intel BE200, I observed a performance boost ranging from 2 to 12%, with an average of 5.5%. I did the tests on the MT7915, MT7981, MT7986, and MT7921 variants. The MT7922, MT7925, and MT799x are untouched for now and still have checksumming disabled. Signed-off-by: Felix Fietkau [rebased and resolved conflicts] Signed-off-by: Aleksander Jan Bajkowski --- drivers/net/wireless/mediatek/mt76/mt76_connac_mac.c | 5 +++++ drivers/net/wireless/mediatek/mt76/mt7915/init.c | 3 ++- drivers/net/wireless/mediatek/mt76/mt792x_core.c | 3 +++ 3 files changed, 10 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/mediatek/mt76/mt76_connac_mac.c b/drivers= /net/wireless/mediatek/mt76/mt76_connac_mac.c index 0db00efe88b0..e31b3e7e2038 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76_connac_mac.c +++ b/drivers/net/wireless/mediatek/mt76/mt76_connac_mac.c @@ -372,6 +372,9 @@ mt76_connac2_mac_write_txwi_8023(__le32 *txwi, struct s= k_buff *skb, wmm =3D sta->wme; } =20 + val =3D FIELD_PREP(MT_TXD0_ETH_TYPE_OFFSET, 10); + txwi[0] |=3D cpu_to_le32(val); + val =3D FIELD_PREP(MT_TXD1_HDR_FORMAT, MT_HDR_FORMAT_802_3) | FIELD_PREP(MT_TXD1_TID, tid); =20 @@ -391,6 +394,8 @@ mt76_connac2_mac_write_txwi_8023(__le32 *txwi, struct s= k_buff *skb, =20 val =3D FIELD_PREP(MT_TXD7_TYPE, fc_type) | FIELD_PREP(MT_TXD7_SUB_TYPE, fc_stype); + if (skb->ip_summed =3D=3D CHECKSUM_PARTIAL) + val |=3D MT_TXD7_IP_SUM | MT_TXD7_UDP_TCP_SUM; =20 txwi[7] |=3D cpu_to_le32(val); } diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/init.c b/drivers/net= /wireless/mediatek/mt76/mt7915/init.c index 5ea8b46e092e..a3bab240afb7 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7915/init.c +++ b/drivers/net/wireless/mediatek/mt76/mt7915/init.c @@ -359,7 +359,8 @@ mt7915_init_wiphy(struct mt7915_phy *phy) hw->queues =3D 4; hw->max_rx_aggregation_subframes =3D IEEE80211_MAX_AMPDU_BUF_HE; hw->max_tx_aggregation_subframes =3D IEEE80211_MAX_AMPDU_BUF_HE; - hw->netdev_features =3D NETIF_F_RXCSUM; + hw->netdev_features =3D NETIF_F_RXCSUM | + NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM; =20 if (mtk_wed_device_active(&mdev->mmio.wed)) hw->netdev_features |=3D NETIF_F_HW_TC; diff --git a/drivers/net/wireless/mediatek/mt76/mt792x_core.c b/drivers/net= /wireless/mediatek/mt76/mt792x_core.c index c0e56541a954..fe138d2e8e62 100644 --- a/drivers/net/wireless/mediatek/mt76/mt792x_core.c +++ b/drivers/net/wireless/mediatek/mt76/mt792x_core.c @@ -632,6 +632,9 @@ int mt792x_init_wiphy(struct ieee80211_hw *hw) } hw->netdev_features =3D NETIF_F_RXCSUM; =20 + if (is_mt7921(&dev->mt76)) + NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM; + hw->radiotap_timestamp.units_pos =3D IEEE80211_RADIOTAP_TIMESTAMP_UNIT_US; =20 --=20 2.47.3