如何在Linux上编程获得网络接口速度？

Question

我想知道网络连接信息中显示的速度，例如100Mb/s、10Mb/s，而不是可用带宽。提前感谢！

Answer 1

在http://linuxhelp.blogspot.com/2005/10/find-speed-of-your-ethernet-card-in.html上找到

以编程方式读取此信息并对其进行解析，查找100baseTx或类似信息

# mii-tool -v eth0
eth0: negotiated 100baseTx-FD flow-control, link ok
  product info: vendor 00:00:20, model 32 rev 1
  basic mode:   autonegotiation enabled
  basic status: autonegotiation complete, link ok
  capabilities: 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD
  advertising:  100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD flow-control
  link partner: 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD flow-control

此外，在同一篇文章中，您可以使用此命令并查找"speed:“行

#ethtool eth0

Settings for eth0:
  Supported ports: [ TP MII ]
  Supported link modes:   10baseT/Half 10baseT/Full
                          100baseT/Half 100baseT/Full
  Supports auto-negotiation: Yes
  Advertised link modes:  10baseT/Half 10baseT/Full
                          100baseT/Half 100baseT/Full
  Advertised auto-negotiation: Yes
  Speed: 100Mb/s
  Duplex: Full
  Port: MII
  PHYAD: 32
  Transceiver: internal
  Auto-negotiation: on
  Supports Wake-on: pumbg
  Wake-on: p
  Current message level: 0x00000007 (7)
  Link detected: yes

Answer 2

如果您想在C代码中做到这一点，请查找mii-tool.c