[PATCH] r8169: Apply configurations to the L0s/L1 entry delay of RTL8105e and RTL8401

From: Yeqi Fu
Date: Fri Nov 19 2021 - 13:47:47 EST


We properly configure the L0s/L1 entry delay in the startup functions of
RTL8105e and RTL8401 through rtl_set_def_aspm_entry_latency(), which will
avoid local denial of service.

Signed-off-by: Yeqi Fu <fufuyqqqqqq@xxxxxxxxx>
---
drivers/net/ethernet/realtek/r8169_main.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/drivers/net/ethernet/realtek/r8169_main.c b/drivers/net/ethernet/realtek/r8169_main.c
index bbe21db20417..4f533007a456 100644
--- a/drivers/net/ethernet/realtek/r8169_main.c
+++ b/drivers/net/ethernet/realtek/r8169_main.c
@@ -3420,6 +3420,7 @@ static void rtl_hw_start_8401(struct rtl8169_private *tp)
{ 0x07, 0xffff, 0x8e68 },
};

+ rtl_set_def_aspm_entry_latency(tp);
rtl_ephy_init(tp, e_info_8401);
RTL_W8(tp, Config3, RTL_R8(tp, Config3) & ~Beacon_en);
}
@@ -3437,6 +3438,7 @@ static void rtl_hw_start_8105e_1(struct rtl8169_private *tp)
{ 0x0a, 0, 0x0020 }
};

+ rtl_set_def_aspm_entry_latency(tp);
/* Force LAN exit from ASPM if Rx/Tx are not idle */
RTL_W32(tp, FuncEvent, RTL_R32(tp, FuncEvent) | 0x002800);

--
2.30.1 (Apple Git-130)