r8169: tweak max read request size for newer chips also in jumbo mtu …

…mode

[ Upstream commit 5e00e16 ]

So far we don't increase the max read request size if we switch to
jumbo mode before bringing up the interface for the first time.
Let's change this.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

drivers/net/ethernet/realtek/r8169_main.c

@@ -2342,21 +2342,22 @@ static void r8168b_1_hw_jumbo_disable(struct rtl8169_private *tp)
 static void rtl_jumbo_config(struct rtl8169_private *tp)
 {
 	bool jumbo = tp->dev->mtu > ETH_DATA_LEN;
+	int readrq = 4096;
 
 	rtl_unlock_config_regs(tp);
 	switch (tp->mac_version) {
 	case RTL_GIGA_MAC_VER_12:
 	case RTL_GIGA_MAC_VER_17:
 		if (jumbo) {
-			pcie_set_readrq(tp->pci_dev, 512);
+			readrq = 512;
 			r8168b_1_hw_jumbo_enable(tp);
 		} else {
 			r8168b_1_hw_jumbo_disable(tp);
 		}
 		break;
 	case RTL_GIGA_MAC_VER_18 ... RTL_GIGA_MAC_VER_26:
 		if (jumbo) {
-			pcie_set_readrq(tp->pci_dev, 512);
+			readrq = 512;
 			r8168c_hw_jumbo_enable(tp);
 		} else {
 			r8168c_hw_jumbo_disable(tp);
@@ -2381,8 +2382,8 @@ static void rtl_jumbo_config(struct rtl8169_private *tp)
 	}
 	rtl_lock_config_regs(tp);
 
-	if (!jumbo && pci_is_pcie(tp->pci_dev) && tp->supports_gmii)
-		pcie_set_readrq(tp->pci_dev, 4096);
+	if (pci_is_pcie(tp->pci_dev) && tp->supports_gmii)
+		pcie_set_readrq(tp->pci_dev, readrq);
 }
 
 DECLARE_RTL_COND(rtl_chipcmd_cond)