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r8169: tweak max read request size for newer chips also in jumbo mtu …
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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>
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Heiner Kallweit authored and Jakub Kicinski committed Jan 12, 2021
1 parent 2007317 commit 5e00e16
Showing 1 changed file with 5 additions and 4 deletions.
9 changes: 5 additions & 4 deletions drivers/net/ethernet/realtek/r8169_main.c
Original file line number Diff line number Diff line change
Expand Up @@ -2341,21 +2341,22 @@ 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);
Expand All @@ -2378,8 +2379,8 @@ 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)
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