From: Heiner Kallweit <hkallweit1@gmail.com>
Date: Wed, 17 Jun 2020 20:56:27 +0000 (+0200)
Subject: r8169: allow setting irq coalescing if link is down
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=51f6291b040ad9ed475af4fd58bb1db53b737475;p=linux.git

r8169: allow setting irq coalescing if link is down

So far we can not configure irq coalescing when link is down. Allow the
user to do this, and assume that he wants to configure irq coalescing
for highest speed. Otherwise the irq rate is low enough anyway.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/drivers/net/ethernet/realtek/r8169_main.c b/drivers/net/ethernet/realtek/r8169_main.c
index d55bf2cd26514..a3c4187d918bc 100644
--- a/drivers/net/ethernet/realtek/r8169_main.c
+++ b/drivers/net/ethernet/realtek/r8169_main.c
@@ -1731,16 +1731,16 @@ struct rtl_coalesce_info {
 #define COALESCE_DELAY(d) { (d), 8 * (d), 16 * (d), 32 * (d) }
 
 static const struct rtl_coalesce_info rtl_coalesce_info_8169[] = {
-	{ SPEED_10,	COALESCE_DELAY(40960) },
-	{ SPEED_100,	COALESCE_DELAY(2560) },
 	{ SPEED_1000,	COALESCE_DELAY(320) },
+	{ SPEED_100,	COALESCE_DELAY(2560) },
+	{ SPEED_10,	COALESCE_DELAY(40960) },
 	{ 0 },
 };
 
 static const struct rtl_coalesce_info rtl_coalesce_info_8168_8136[] = {
-	{ SPEED_10,	COALESCE_DELAY(40960) },
-	{ SPEED_100,	COALESCE_DELAY(2560) },
 	{ SPEED_1000,	COALESCE_DELAY(5000) },
+	{ SPEED_100,	COALESCE_DELAY(2560) },
+	{ SPEED_10,	COALESCE_DELAY(40960) },
 	{ 0 },
 };
 #undef COALESCE_DELAY
@@ -1756,6 +1756,10 @@ rtl_coalesce_info(struct rtl8169_private *tp)
 	else
 		ci = rtl_coalesce_info_8168_8136;
 
+	/* if speed is unknown assume highest one */
+	if (tp->phydev->speed == SPEED_UNKNOWN)
+		return ci;
+
 	for (; ci->speed; ci++) {
 		if (tp->phydev->speed == ci->speed)
 			return ci;