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authorAndy Gospodarek <andy@greyhouse.net>2009-10-02 09:26:12 +0000
committerDavid S. Miller <davem@davemloft.net>2009-10-05 00:43:35 -0700
commitd519e17e2d01a0ee9abe083019532061b4438065 (patch)
tree3f90e369fe65ff84dc46ec513f758b51a2834559 /drivers/net/igb
parent053a93dd126f68ba37973f95f00af6045fa7c957 (diff)
net: export device speed and duplex via sysfs
This patch exports the link-speed (in Mbps) and duplex of an interface via sysfs. This eliminates the need to use ethtool just to check the link-speed. Not requiring 'ethtool' and not relying on the SIOCETHTOOL ioctl should be helpful in an embedded environment where space is at a premium as well. NOTE: This patch also intentionally allows non-root users to check the link speed and duplex -- something not possible with ethtool. Here's some sample output: # cat /sys/class/net/eth0/speed 100 # cat /sys/class/net/eth0/duplex half # ethtool eth0 Settings for eth0: Supported ports: [ TP ] Supported link modes: 10baseT/Half 10baseT/Full 100baseT/Half 100baseT/Full 1000baseT/Half 1000baseT/Full Supports auto-negotiation: Yes Advertised link modes: Not reported Advertised auto-negotiation: No Speed: 100Mb/s Duplex: Half Port: Twisted Pair PHYAD: 1 Transceiver: internal Auto-negotiation: off Supports Wake-on: g Wake-on: g Current message level: 0x000000ff (255) Link detected: yes Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/igb')
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