netdev - [PATCH AUTOSEL 6.12 030/107] r8169: don't apply UDP padding quirk on RTL8126A

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Message-ID: <20241124133301.3341829-30-sashal@kernel.org>
Date: Sun, 24 Nov 2024 08:28:50 -0500
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Cc: Heiner Kallweit <hkallweit1@...il.com>,
	Simon Horman <horms@...nel.org>,
	Jakub Kicinski <kuba@...nel.org>,
	Sasha Levin <sashal@...nel.org>,
	nic_swsd@...ltek.com,
	andrew+netdev@...n.ch,
	davem@...emloft.net,
	edumazet@...gle.com,
	pabeni@...hat.com,
	netdev@...r.kernel.org
Subject: [PATCH AUTOSEL 6.12 030/107] r8169: don't apply UDP padding quirk on RTL8126A

From: Heiner Kallweit <hkallweit1@...il.com>

[ Upstream commit 87e26448dbda4523b73a894d96f0f788506d3795 ]

Vendor drivers r8125/r8126 indicate that this quirk isn't needed
any longer for RTL8126A. Mimic this in r8169.

Signed-off-by: Heiner Kallweit <hkallweit1@...il.com>
Reviewed-by: Simon Horman <horms@...nel.org>
Link: https://patch.msgid.link/d1317187-aa81-4a69-b831-678436e4de62@gmail.com
Signed-off-by: Jakub Kicinski <kuba@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/net/ethernet/realtek/r8169_main.c | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/realtek/r8169_main.c b/drivers/net/ethernet/realtek/r8169_main.c
index 713a89bb21e93..5ed2818bac257 100644
--- a/drivers/net/ethernet/realtek/r8169_main.c
+++ b/drivers/net/ethernet/realtek/r8169_main.c
@@ -4233,8 +4233,8 @@ static unsigned int rtl8125_quirk_udp_padto(struct rtl8169_private *tp,
 {
 	unsigned int padto = 0, len = skb->len;
 
-	if (rtl_is_8125(tp) && len < 128 + RTL_MIN_PATCH_LEN &&
-	    rtl_skb_is_udp(skb) && skb_transport_header_was_set(skb)) {
+	if (len < 128 + RTL_MIN_PATCH_LEN && rtl_skb_is_udp(skb) &&
+	    skb_transport_header_was_set(skb)) {
 		unsigned int trans_data_len = skb_tail_pointer(skb) -
 					      skb_transport_header(skb);
 
@@ -4258,9 +4258,15 @@ static unsigned int rtl8125_quirk_udp_padto(struct rtl8169_private *tp,
 static unsigned int rtl_quirk_packet_padto(struct rtl8169_private *tp,
 					   struct sk_buff *skb)
 {
-	unsigned int padto;
+	unsigned int padto = 0;
 
-	padto = rtl8125_quirk_udp_padto(tp, skb);
+	switch (tp->mac_version) {
+	case RTL_GIGA_MAC_VER_61 ... RTL_GIGA_MAC_VER_63:
+		padto = rtl8125_quirk_udp_padto(tp, skb);
+		break;
+	default:
+		break;
+	}
 
 	switch (tp->mac_version) {
 	case RTL_GIGA_MAC_VER_34:
-- 
2.43.0