From 6cf739131a15e4177e58a1b4f2bede9d5da78552 Mon Sep 17 00:00:00 2001 From: Heiner Kallweit Date: Thu, 25 Feb 2021 16:05:19 +0100 Subject: [PATCH] r8169: fix jumbo packet handling on RTL8168e MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Josef reported [0] that using jumbo packets fails on RTL8168e. Aligning the values for register MaxTxPacketSize with the vendor driver fixes the problem. [0] https://bugzilla.kernel.org/show_bug.cgi?id=211827 Fixes: d58d46b5d851 ("r8169: jumbo fixes.") Reported-by: Josef OÅ¡kera Tested-by: Josef OÅ¡kera Signed-off-by: Heiner Kallweit Link: https://lore.kernel.org/r/b15ddef7-0d50-4320-18f4-6a3f86fbfd3e@gmail.com Signed-off-by: Jakub Kicinski --- drivers/net/ethernet/realtek/r8169_main.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/realtek/r8169_main.c b/drivers/net/ethernet/realtek/r8169_main.c index 0a20dae..f704da3 100644 --- a/drivers/net/ethernet/realtek/r8169_main.c +++ b/drivers/net/ethernet/realtek/r8169_main.c @@ -2285,14 +2285,14 @@ static void r8168dp_hw_jumbo_disable(struct rtl8169_private *tp) static void r8168e_hw_jumbo_enable(struct rtl8169_private *tp) { - RTL_W8(tp, MaxTxPacketSize, 0x3f); + RTL_W8(tp, MaxTxPacketSize, 0x24); RTL_W8(tp, Config3, RTL_R8(tp, Config3) | Jumbo_En0); RTL_W8(tp, Config4, RTL_R8(tp, Config4) | 0x01); } static void r8168e_hw_jumbo_disable(struct rtl8169_private *tp) { - RTL_W8(tp, MaxTxPacketSize, 0x0c); + RTL_W8(tp, MaxTxPacketSize, 0x3f); RTL_W8(tp, Config3, RTL_R8(tp, Config3) & ~Jumbo_En0); RTL_W8(tp, Config4, RTL_R8(tp, Config4) & ~0x01); } -- 2.7.4