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Date: Wed, 22 Jun 2016 01:09:57 +0200
From: Francois Romieu <romieu@...zoreil.com>
To: Jonathan Woithe <jwoithe@...ad.com.au>
Cc: netdev@...r.kernel.org
Subject: Re: r8169 regression: UDP packets dropped intermittantly
Jonathan Woithe <jwoithe@...ad.com.au> :
[...]
> Is there any chance that this regression can be resolved? It's been 6
> months since the last contact was received from the list in relation to this
> issue. If the r8169 driver is to remain broken with respect to UDP traffic
> then we will have no choice but to factor in a change in our standard
> hardware for future systems. Unfortunately this also means that dozens of
> systems in the field cannot be upgraded to recent kernels since doing so
> will trigger the regression.[1]
If I understood correctly (2015/11/21) you had a working system with a stock
4.2 or 4.3 kernel and the r8169.c from 1e874e041fc7c222cbd85b20c4406070be1f687a
(i.e. da78dbff2e05630921c551dbbc70a4b7981a8fff "r8169: remove work from irq
handler." parent) patched with the snippet below, right ?
If so, while not perfect, it should at least mitigate the "can't upgrade
kernel" part.
--- r8169.c 2015-11-21 23:02:10.435275753 +0100
+++ r8169.c 2015-11-21 23:21:49.429554012 +0100
@@ -29,7 +29,6 @@
#include <linux/pci-aspm.h>
#include <linux/prefetch.h>
-#include <asm/system.h>
#include <asm/io.h>
#include <asm/irq.h>
@@ -1616,7 +1615,7 @@ static int rtl8169_set_features(struct n
else
tp->cp_cmd &= ~RxChkSum;
- if (dev->features & NETIF_F_HW_VLAN_RX)
+ if (dev->features & NETIF_F_HW_VLAN_CTAG_RX)
tp->cp_cmd |= RxVlan;
else
tp->cp_cmd &= ~RxVlan;
@@ -1632,8 +1631,8 @@ static int rtl8169_set_features(struct n
static inline u32 rtl8169_tx_vlan_tag(struct rtl8169_private *tp,
struct sk_buff *skb)
{
- return (vlan_tx_tag_present(skb)) ?
- TxVlanTag | swab16(vlan_tx_tag_get(skb)) : 0x00;
+ return (skb_vlan_tag_present(skb)) ?
+ TxVlanTag | swab16(skb_vlan_tag_get(skb)) : 0x00;
}
static void rtl8169_rx_vlan_tag(struct RxDesc *desc, struct sk_buff *skb)
@@ -1641,7 +1640,7 @@ static void rtl8169_rx_vlan_tag(struct R
u32 opts2 = le32_to_cpu(desc->opts2);
if (opts2 & RxVlanTag)
- __vlan_hwaccel_put_tag(skb, swab16(opts2 & 0xffff));
+ __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), swab16(opts2 & 0xffff));
desc->opts2 = 0;
}
@@ -3508,7 +3507,7 @@ static const struct net_device_ops rtl81
};
-static void __devinit rtl_init_mdio_ops(struct rtl8169_private *tp)
+static void rtl_init_mdio_ops(struct rtl8169_private *tp)
{
struct mdio_ops *ops = &tp->mdio_ops;
@@ -3725,7 +3724,7 @@ static void rtl_pll_power_up(struct rtl8
rtl_generic_op(tp, tp->pll_power_ops.up);
}
-static void __devinit rtl_init_pll_power_ops(struct rtl8169_private *tp)
+static void rtl_init_pll_power_ops(struct rtl8169_private *tp)
{
struct pll_power_ops *ops = &tp->pll_power_ops;
@@ -3905,7 +3904,7 @@ static void r8168b_1_hw_jumbo_disable(st
RTL_W8(Config4, RTL_R8(Config4) & ~(1 << 0));
}
-static void __devinit rtl_init_jumbo_ops(struct rtl8169_private *tp)
+static void rtl_init_jumbo_ops(struct rtl8169_private *tp)
{
struct jumbo_ops *ops = &tp->jumbo_ops;
@@ -3971,7 +3970,7 @@ static void rtl_hw_reset(struct rtl8169_
}
}
-static int __devinit
+static int
rtl8169_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
{
const struct rtl_cfg_info *cfg = rtl_cfg_infos + ent->driver_data;
@@ -4137,7 +4136,7 @@ rtl8169_init_one(struct pci_dev *pdev, c
dev->dev_addr[i] = RTL_R8(MAC0 + i);
memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
- SET_ETHTOOL_OPS(dev, &rtl8169_ethtool_ops);
+ dev->ethtool_ops = &rtl8169_ethtool_ops;
dev->watchdog_timeo = RTL8169_TX_TIMEOUT;
dev->irq = pdev->irq;
dev->base_addr = (unsigned long) ioaddr;
@@ -4147,16 +4146,16 @@ rtl8169_init_one(struct pci_dev *pdev, c
/* don't enable SG, IP_CSUM and TSO by default - it might not work
* properly for all devices */
dev->features |= NETIF_F_RXCSUM |
- NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
+ NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX;
dev->hw_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO |
- NETIF_F_RXCSUM | NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
+ NETIF_F_RXCSUM | NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX;
dev->vlan_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO |
NETIF_F_HIGHDMA;
if (tp->mac_version == RTL_GIGA_MAC_VER_05)
/* 8110SCd requires hardware Rx VLAN - disallow toggling */
- dev->hw_features &= ~NETIF_F_HW_VLAN_RX;
+ dev->hw_features &= ~NETIF_F_HW_VLAN_CTAG_RX;
tp->intr_mask = 0xffff;
tp->hw_start = cfg->hw_start;
@@ -4217,7 +4216,7 @@ err_out_free_dev_1:
goto out;
}
-static void __devexit rtl8169_remove_one(struct pci_dev *pdev)
+static void rtl8169_remove_one(struct pci_dev *pdev)
{
struct net_device *dev = pci_get_drvdata(pdev);
struct rtl8169_private *tp = netdev_priv(dev);
@@ -6218,20 +6217,9 @@ static struct pci_driver rtl8169_pci_dri
.name = MODULENAME,
.id_table = rtl8169_pci_tbl,
.probe = rtl8169_init_one,
- .remove = __devexit_p(rtl8169_remove_one),
+ .remove = rtl8169_remove_one,
.shutdown = rtl_shutdown,
.driver.pm = RTL8169_PM_OPS,
};
-static int __init rtl8169_init_module(void)
-{
- return pci_register_driver(&rtl8169_pci_driver);
-}
-
-static void __exit rtl8169_cleanup_module(void)
-{
- pci_unregister_driver(&rtl8169_pci_driver);
-}
-
-module_init(rtl8169_init_module);
-module_exit(rtl8169_cleanup_module);
+module_pci_driver(rtl8169_pci_driver);
--
[...]
> If the decision has been made to leave the regression unfixed, please let me
> know.
No such decision that I know of.
--
Ueimor
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