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出没于杭州和青岛的程序猿一枚,对内核略懂一二

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分类: LINUX

2014-07-22 11:01:24

原文地址:Xen SRIOV config on sles11sp2 作者:todaygood

env: sles11sp2 xen

1.BIOS Configuration:

打开vt-x ,vt-d  技术

 

2.检查硬件是否支持SRIOV

dom0-93:/opt # lspci | grep Eth
03:00.0 Ethernet controller: Broadcom Corporation NetXtreme II BCM5708 Gigabit Ethernet (rev 12)
05:00.0 Ethernet controller: Broadcom Corporation NetXtreme II BCM5708 Gigabit Ethernet (rev 12)

 

dom0-93:/opt # lspci -vvk -s 0b:00.1 | grep SR-IOV

Capabilities: [160] Single Root I/O Virtualization (SR-IOV)

 

3.Modifying modprobe.conf

append as follows to  /etc/modprobe.conf  :

options igb max_vfs=7

blacklist igbvf

options loop max_loop=128

 

4.Modifying grub.conf, add iommu=1

kernel /boot/xen.gz vga=mode-0x317  iommu=1

 

5.reboot machine, after rebooting

dom0-93:/opt # lspci | grep Eth
03:00.0 Ethernet controller: Broadcom Corporation NetXtreme II BCM5708 Gigabit Ethernet (rev 12)
05:00.0 Ethernet controller: Broadcom Corporation NetXtreme II BCM5708 Gigabit Ethernet (rev 12)
0b:00.0 Ethernet controller: Intel Corporation I350 Gigabit Network Connection (rev 01)
0b:00.1 Ethernet controller: Intel Corporation I350 Gigabit Network Connection (rev 01)
0c:10.0 Ethernet controller: Intel Corporation Device 1520 (rev 01)
0c:10.1 Ethernet controller: Intel Corporation Device 1520 (rev 01)
0c:10.4 Ethernet controller: Intel Corporation Device 1520 (rev 01)
0c:10.5 Ethernet controller: Intel Corporation Device 1520 (rev 01)
0c:11.0 Ethernet controller: Intel Corporation Device 1520 (rev 01)
0c:11.1 Ethernet controller: Intel Corporation Device 1520 (rev 01)
0c:11.4 Ethernet controller: Intel Corporation Device 1520 (rev 01)
0c:11.5 Ethernet controller: Intel Corporation Device 1520 (rev 01)
0c:12.0 Ethernet controller: Intel Corporation Device 1520 (rev 01)
0c:12.1 Ethernet controller: Intel Corporation Device 1520 (rev 01)
0c:12.4 Ethernet controller: Intel Corporation Device 1520 (rev 01)
0c:12.5 Ethernet controller: Intel Corporation Device 1520 (rev 01)
0c:13.0 Ethernet controller: Intel Corporation Device 1520 (rev 01)
0c:13.1 Ethernet controller: Intel Corporation Device 1520 (rev 01)

 

modifying grub.conf

title Xen -- SUSE Linux Enterprise Server 11 SP2 - 3.0.13-0.27
    root (hd0,0)
    kernel /boot/xen.gz vga=mode-0x317  iommu=1
    module /boot/vmlinuz-3.0.13-0.27-xen root=/dev/disk/by-id/cciss-3600508b100104839535656314933001b-part1 resume=/dev/disk/by-id/cciss-3600508b100104839535656314933001b-part2 splash=silent showopts vga=0x317 pciback.hide=(0c:10.0)(0c:10.1)(0c:10.4)(0c:10.5)(0c:11.0)(0c:11.1)(0c:11.4)(0c:11.5)(0c:12.0)(0c:12.1)(0c:12.4)(0c:12.5)(0c:13.0)(0c:13.1)
    module /boot/initrd-3.0.13-0.27-xen

 

6.reboot machine, Assigning a Virtual Function to a Virtual Machine

1)modifying vm.conf , add pci setting.

dom0-93:/etc/xen/vm # cat sles10sp4r2
name="sles10sp4r2"
description="None"
uuid="a847c466-adeb-704f-4ec5-c6fc0bdb96aa"
memory=1024
maxmem=1024
vcpus=4
on_poweroff="destroy"
on_reboot="restart"
on_crash="destroy"
localtime=0
keymap="en-us"
builder="linux"
bootloader="/usr/lib/xen/boot/domUloader.py"
bootargs="--entry=xvda2:/boot/vmlinuz-xen,/boot/initrd-xen"
#extra=" swiotlb=force "
extra=" "  (加不加swiotlb=force都行)
disk=[ 'phy:/dev/domu/sles10sp4,xvda,w', ]
vif=[ 'mac=00:16:3e:5f:5e:f5,bridge=br1',  'mac=00:16:3e:5f:5e:f6,bridge=br2', ]
vfb=['type=vnc,vncunused=1']
pci=['0c:10.0']

2)start vm

3)in domU,

vsles10sp4:~ # lspci
00:00.0 Ethernet controller: Intel Corporation Device 1520 (rev 01)

vsles10sp4:~ # dmesg | grep -i pci
PCI-DMA: Using software bounce buffering for IO (SWIOTLB)
PCI: setting up Xen PCI frontend stub
PCI: System does not support PCI
PCI: System does not support PCI
pcifront pci-0: Installing PCI frontend
pcifront pci-0: Creating PCI Frontend Bus 0000:00

 

swiotlb :

For DMA access to work for pci devices in a PV guest it is required to enable the swiotlb in the domU (guest VM) kernel. (for some explanation about the swiotlb see

Add this option to your domU (guest VM) kernel boot options (cmdline arguments) list :

swiotlb=force

NOTE: This option is only required for older PV guest kernel versions (linux-2.6.18-xen, RHEL5, SLES10/11, Debian etch/lenny).

upstream kernel.org (pvops) Linux domU kernels requires just this option:

iommu=soft

4) in domU,install  the igbvf driver

vsles10sp4:/opt/igbvf-1.1.5/src # make
make -C /lib/modules/2.6.16.60-0.85.1-xen/build SUBDIRS=/opt/igbvf-1.1.5/src modules
make[1]: Entering directory `/usr/src/linux-2.6.16.60-0.85.1-obj/x86_64/xen'
make -C ../../../linux-2.6.16.60-0.85.1 O=../linux-2.6.16.60-0.85.1-obj/x86_64/xen modules
  Updating /opt/igbvf-1.1.5/src/Makefile.xen
  CC [M]  /opt/igbvf-1.1.5/src/netdev.o
  CC [M]  /opt/igbvf-1.1.5/src/ethtool.o
  CC [M]  /opt/igbvf-1.1.5/src/param.o
  CC [M]  /opt/igbvf-1.1.5/src/e1000_vf.o
  CC [M]  /opt/igbvf-1.1.5/src/kcompat.o
  CC [M]  /opt/igbvf-1.1.5/src/e1000_mbx.o
  LD [M]  /opt/igbvf-1.1.5/src/igbvf.o
  Building modules, stage 2.
  MODPOST
  CC      /opt/igbvf-1.1.5/src/igbvf.mod.o
  LD [M]  /opt/igbvf-1.1.5/src/igbvf.ko
make[1]: Leaving directory `/usr/src/linux-2.6.16.60-0.85.1-obj/x86_64/xen'
vsles10sp4:/opt/igbvf-1.1.5/src # insmod igbvf.ko
vsles10sp4:/opt/igbvf-1.1.5/src # lspci -vk
00:00.0 Ethernet controller: Intel Corporation Device 1520 (rev 01)
        Subsystem: Intel Corporation Device 0002
        Flags: bus master, fast devsel, latency 0
        Memory at fdc00000 (32-bit, non-prefetchable) [size=16K]
        Memory at fdc20000 (32-bit, non-prefetchable) [size=16K]
        Capabilities: [70] MSI-X: Enable+ Mask- TabSize=3
        Capabilities: [a0] Express Endpoint, MSI 00
        Capabilities: [100] Advanced Error Reporting
        Capabilities: [150] Alternative Routing-ID Interpretation (ARI)
        Capabilities: [1a0] #17
        Capabilities: [1d0] Access Control Services
        Kernel driver in use: igbvf

vsles10sp4:/opt/igbvf-1.1.5/src # ifconfig
eth0      Link encap:Ethernet  HWaddr 00:16:3E:5F:5E:F5
          inet addr:10.6.193.92  Bcast:10.6.193.255  Mask:255.255.255.0
          inet6 addr: fe80::216:3eff:fe5f:5ef5/64 Scope:Link
          UP BROADCAST NOTRAILERS RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:162968 errors:0 dropped:0 overruns:0 frame:0
          TX packets:39709 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:124790243 (119.0 Mb)  TX bytes:2657146 (2.5 Mb)

eth1      Link encap:Ethernet  HWaddr 00:16:3E:5F:5E:F6
          inet addr:192.168.1.81  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: fe80::216:3eff:fe5f:5ef6/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:13865 errors:0 dropped:0 overruns:0 frame:0
          TX packets:336 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:2921773 (2.7 Mb)  TX bytes:20036 (19.5 Kb)

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:10 errors:0 dropped:0 overruns:0 frame:0
          TX packets:10 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:644 (644.0 b)  TX bytes:644 (644.0 b)

vsles10sp4:/opt/igbvf-1.1.5/src # ifconfig -a
eth0      Link encap:Ethernet  HWaddr 00:16:3E:5F:5E:F5
          inet addr:10.6.193.92  Bcast:10.6.193.255  Mask:255.255.255.0
          inet6 addr: fe80::216:3eff:fe5f:5ef5/64 Scope:Link
          UP BROADCAST NOTRAILERS RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:162988 errors:0 dropped:0 overruns:0 frame:0
          TX packets:39709 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:124791876 (119.0 Mb)  TX bytes:2657146 (2.5 Mb)

eth1      Link encap:Ethernet  HWaddr 00:16:3E:5F:5E:F6
          inet addr:192.168.1.81  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: fe80::216:3eff:fe5f:5ef6/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:13866 errors:0 dropped:0 overruns:0 frame:0
          TX packets:336 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:2921833 (2.7 Mb)  TX bytes:20036 (19.5 Kb)

eth2      Link encap:Ethernet  HWaddr 22:BA:70:FE:1A:4D
          BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:10 errors:0 dropped:0 overruns:0 frame:0
          TX packets:10 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:644 (644.0 b)  TX bytes:644 (644.0 b)

sit0      Link encap:IPv6-in-IPv4
          NOARP  MTU:1480  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

trouble-shooting tools:

dom0-93:/sys/bus/pci/drivers/igb/0000:0b:00.0/virtfn0 # xm pci-list-assignable-devices
0000:0c:10.1
0000:0c:10.4
0000:0c:10.5
0000:0c:11.0
0000:0c:11.1
0000:0c:11.4
0000:0c:11.5
0000:0c:12.0
0000:0c:12.1
0000:0c:12.4
0000:0c:12.5
0000:0c:13.0
0000:0c:13.1
dom0-93:/sys/bus/pci/drivers/igb/0000:0b:00.0/virtfn0 # xm pci-list 5
Device
0000:0c:10.0

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