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-   -   rtl8169: hanging network/dma issues on secondary interface ifup (https://www.linuxquestions.org/questions/linux-networking-3/rtl8169-hanging-network-dma-issues-on-secondary-interface-ifup-753532/)

Clontarf[X] 09-08-2009 07:12 AM
rtl8169: hanging network/dma issues on secondary interface ifup
 
Hi All,

The issue I am having is when bringing up a second ethernet interface that uses the rtl8169 driver, it seems to cause network issues. I lose all network connectivity to the machine, and I simultaneously see a DMA error occur for my primary IDE drive.

Two interfaces:

Quote:
eth0 (rtl8168 (using rtl8169 driver) - Onboard PCI-E Gigabit Ethernet)
eth1 (rtl8169 (using rtl8169 driver) - RTL8169 PCI Gigabit Ethernet)
The chipset running the IDE drive that experiences the DMA crash is:

Quote:
ATI Technologies Inc SB700/SB800 IDE Controller (atiixp)
Vitals:

Debian 5.0.1 @ Kernel 2.6.30

Quote:
Originally Posted by lspci
00:00.0 Host bridge: Advanced Micro Devices [AMD] RS780 Host Bridge
00:01.0 PCI bridge: ASUSTeK Computer Inc. Device 9602
00:06.0 PCI bridge: Advanced Micro Devices [AMD] RS780 PCI to PCI bridge (PCIE port 2)
00:11.0 SATA controller: ATI Technologies Inc SB700/SB800 SATA Controller [IDE mode]
00:12.0 USB Controller: ATI Technologies Inc SB700/SB800 USB OHCI0 Controller
00:12.1 USB Controller: ATI Technologies Inc SB700 USB OHCI1 Controller
00:12.2 USB Controller: ATI Technologies Inc SB700/SB800 USB EHCI Controller
00:13.0 USB Controller: ATI Technologies Inc SB700/SB800 USB OHCI0 Controller
00:13.1 USB Controller: ATI Technologies Inc SB700 USB OHCI1 Controller
00:13.2 USB Controller: ATI Technologies Inc SB700/SB800 USB EHCI Controller
00:14.0 SMBus: ATI Technologies Inc SBx00 SMBus Controller (rev 3a)
00:14.1 IDE interface: ATI Technologies Inc SB700/SB800 IDE Controller
00:14.3 ISA bridge: ATI Technologies Inc SB700/SB800 LPC host controller
00:14.4 PCI bridge: ATI Technologies Inc SBx00 PCI to PCI Bridge
00:14.5 USB Controller: ATI Technologies Inc SB700/SB800 USB OHCI2 Controller
00:18.0 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] HyperTransport Technology Configuration
00:18.1 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Address Map
00:18.2 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] DRAM Controller
00:18.3 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Miscellaneous Control
01:05.0 VGA compatible controller: ATI Technologies Inc Radeon HD 3200 Graphics
02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 02)
03:07.0 Multimedia audio controller: Creative Labs SB Audigy (rev 04)
03:07.1 Input device controller: Creative Labs SB Audigy Game Port (rev 04)
03:07.2 FireWire (IEEE 1394): Creative Labs SB Audigy FireWire Port (rev 04)
The output from kern.log is as follows (right after bringing the link up)

Quote:
Originally Posted by kernlog
Sep 8 19:36:42 wdhq kernel: r8169: eth1: link up
Sep 8 19:36:45 wdhq kernel: hda: ide_dma_intr: bad DMA status (0x76)
Sep 8 19:36:45 wdhq kernel: hda: dma_intr: status=0x50 { DriveReady SeekComplete }
Sep 8 19:36:45 wdhq kernel: hda: possibly failed opcode: 0x35
Sep 8 19:36:45 wdhq kernel: hda: ide_dma_intr: bad DMA status (0x76)
Sep 8 19:36:45 wdhq kernel: hda: dma_intr: status=0x50 { DriveReady SeekComplete }
Sep 8 19:36:45 wdhq kernel: hda: possibly failed opcode: 0x35
Sep 8 19:36:45 wdhq kernel: hda: ide_dma_intr: bad DMA status (0x76)
Sep 8 19:36:45 wdhq kernel: hda: dma_intr: status=0x50 { DriveReady SeekComplete }
Sep 8 19:36:45 wdhq kernel: hda: possibly failed opcode: 0x35
Sep 8 19:36:45 wdhq kernel: hda: ide_dma_intr: bad DMA status (0x76)
Sep 8 19:36:45 wdhq kernel: hda: dma_intr: status=0x50 { DriveReady SeekComplete }
Sep 8 19:36:45 wdhq kernel: hda: possibly failed opcode: 0x35
Sep 8 19:36:46 wdhq kernel: hda: ide_dma_intr: bad DMA status (0x76)
Sep 8 19:36:46 wdhq kernel: hda: dma_intr: status=0x50 { DriveReady SeekComplete }
Sep 8 19:36:46 wdhq kernel: hda: possibly failed opcode: 0x35
Sep 8 19:36:46 wdhq kernel: hda: DMA disabled
Sep 8 19:36:46 wdhq kernel: hdb: DMA disabled
Sep 8 19:36:46 wdhq kernel: ide0: reset: success
If you guys need any package versions just ask. Also feel free to point me in the direction of a better place to post this issue.

HELP!

business_kid 09-09-2009 06:18 AM
It was historically impossible to have 2 identical nics on the same bus. I am sure there is a solution, but I would start there.

Clontarf[X] 09-09-2009 12:07 PM
Quote:
Originally Posted by business_kid (Post 3675660)
It was historically impossible to have 2 identical nics on the same bus. I am sure there is a solution, but I would start there.
They are not identical as such, as one is a PCI-E 8168, the other a PCI 8169. Unless you mean two NIC's using the same driver module? Thanks for the suggestion though.

I've actually just found the official rtl8169 driver on Realtek's website, so I'm going to give that a go.

Clontarf[X] 09-09-2009 01:09 PM
And I've fixed it, by disabling APIC and MSI/MSI-X interrupts in my kernel.

Now to figure out why it's not communicating on the new network ;)


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