This is a note to let you know that I've just added the patch titled
r8169: improve rtl_jumbo_config
to the 5.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
r8169-improve-rtl_jumbo_config.patch
and it can be found in the queue-5.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 6a5bb02bd30a6dcfa8ffd62b27f337f3891ca057
Author: Heiner Kallweit <hkallweit1@xxxxxxxxx>
Date: Sat Feb 15 14:52:58 2020 +0100
r8169: improve rtl_jumbo_config
[ Upstream commit 9db0ac57bd3286fedcf43a86b29b847cea281cc7 ]
Merge enabling and disabling jumbo packets to one function to make
the code a little simpler.
Signed-off-by: Heiner Kallweit <hkallweit1@xxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/net/ethernet/realtek/r8169_main.c b/drivers/net/ethernet/realtek/r8169_main.c
index 19ebde91555d..1352dd0b69e9 100644
--- a/drivers/net/ethernet/realtek/r8169_main.c
+++ b/drivers/net/ethernet/realtek/r8169_main.c
@@ -4093,66 +4093,52 @@ static void r8168b_1_hw_jumbo_disable(struct rtl8169_private *tp)
RTL_W8(tp, Config4, RTL_R8(tp, Config4) & ~(1 << 0));
}
-static void rtl_hw_jumbo_enable(struct rtl8169_private *tp)
+static void rtl_jumbo_config(struct rtl8169_private *tp)
{
- rtl_unlock_config_regs(tp);
- switch (tp->mac_version) {
- case RTL_GIGA_MAC_VER_12:
- case RTL_GIGA_MAC_VER_17:
- pcie_set_readrq(tp->pci_dev, 512);
- r8168b_1_hw_jumbo_enable(tp);
- break;
- case RTL_GIGA_MAC_VER_18 ... RTL_GIGA_MAC_VER_26:
- pcie_set_readrq(tp->pci_dev, 512);
- r8168c_hw_jumbo_enable(tp);
- break;
- case RTL_GIGA_MAC_VER_27 ... RTL_GIGA_MAC_VER_28:
- r8168dp_hw_jumbo_enable(tp);
- break;
- case RTL_GIGA_MAC_VER_31 ... RTL_GIGA_MAC_VER_33:
- pcie_set_readrq(tp->pci_dev, 512);
- r8168e_hw_jumbo_enable(tp);
- break;
- default:
- break;
- }
- rtl_lock_config_regs(tp);
-}
+ bool jumbo = tp->dev->mtu > ETH_DATA_LEN;
-static void rtl_hw_jumbo_disable(struct rtl8169_private *tp)
-{
rtl_unlock_config_regs(tp);
switch (tp->mac_version) {
case RTL_GIGA_MAC_VER_12:
case RTL_GIGA_MAC_VER_17:
- r8168b_1_hw_jumbo_disable(tp);
+ if (jumbo) {
+ pcie_set_readrq(tp->pci_dev, 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:
- r8168c_hw_jumbo_disable(tp);
+ if (jumbo) {
+ pcie_set_readrq(tp->pci_dev, 512);
+ r8168c_hw_jumbo_enable(tp);
+ } else {
+ r8168c_hw_jumbo_disable(tp);
+ }
break;
case RTL_GIGA_MAC_VER_27 ... RTL_GIGA_MAC_VER_28:
- r8168dp_hw_jumbo_disable(tp);
+ if (jumbo)
+ r8168dp_hw_jumbo_enable(tp);
+ else
+ r8168dp_hw_jumbo_disable(tp);
break;
case RTL_GIGA_MAC_VER_31 ... RTL_GIGA_MAC_VER_33:
- r8168e_hw_jumbo_disable(tp);
+ if (jumbo) {
+ pcie_set_readrq(tp->pci_dev, 512);
+ r8168e_hw_jumbo_enable(tp);
+ } else {
+ r8168e_hw_jumbo_disable(tp);
+ }
break;
default:
break;
}
rtl_lock_config_regs(tp);
- if (pci_is_pcie(tp->pci_dev) && tp->supports_gmii)
+ if (!jumbo && pci_is_pcie(tp->pci_dev) && tp->supports_gmii)
pcie_set_readrq(tp->pci_dev, 4096);
}
-static void rtl_jumbo_config(struct rtl8169_private *tp, int mtu)
-{
- if (mtu > ETH_DATA_LEN)
- rtl_hw_jumbo_enable(tp);
- else
- rtl_hw_jumbo_disable(tp);
-}
-
DECLARE_RTL_COND(rtl_chipcmd_cond)
{
return RTL_R8(tp, ChipCmd) & CmdReset;
@@ -5458,7 +5444,7 @@ static void rtl_hw_start(struct rtl8169_private *tp)
rtl_set_rx_tx_desc_registers(tp);
rtl_lock_config_regs(tp);
- rtl_jumbo_config(tp, tp->dev->mtu);
+ rtl_jumbo_config(tp);
/* Initially a 10 us delay. Turned it into a PCI commit. - FR */
RTL_R16(tp, CPlusCmd);
@@ -5473,10 +5459,9 @@ static int rtl8169_change_mtu(struct net_device *dev, int new_mtu)
{
struct rtl8169_private *tp = netdev_priv(dev);
- rtl_jumbo_config(tp, new_mtu);
-
dev->mtu = new_mtu;
netdev_update_features(dev);
+ rtl_jumbo_config(tp);
/* Reportedly at least Asus X453MA truncates packets otherwise */
if (tp->mac_version == RTL_GIGA_MAC_VER_37)
