Xen 虚拟机网卡信息查询

[flewover]

想查看 XenServer6.2 下边的虚拟机 Ubuntu14.04 的网卡速率等信息，使用 ethtool ，mii-tool 等工具都不能返回与普通物理网卡相同的信息。有什么其他的办法么？
例如使用 ethtool：

➜  sudo ethtool eth0
Settings for eth0:
Link detected: yes

➜  sudo ethtool -i eth0
driver: vif
version:
firmware-version:
bus-info: vif-0
supports-statistics: yes
supports-test: no
supports-eeprom-access: no
supports-register-dump: no

driver "vif" means it's a Xen Virtual Interface paravirtualized driver.

普通物理网卡返回

[apple@localhost ~]$ sudo ethtool em1
Settings for em1:
    Supported ports: [ FIBRE ]
    Supported link modes:   1000baseT/Full
                            10000baseT/Full
    Supports auto-negotiation: No
    Advertised link modes:  10000baseT/Full
    Advertised pause frame use: No
    Advertised auto-negotiation: No
    Speed: 10000Mb/s
    Duplex: Full
    Port: Direct Attach Copper
    PHYAD: 1
    Transceiver: internal
    Auto-negotiation: off
    Supports Wake-on: g
    Wake-on: d
    Current message level: 0x00000000 (0)
    Link detected: yes

使用 mii-tool

➜  sudo mii-tool eth0
 SIOCGMIIPHY on 'eth0' failed: Operation not supported