linux/net
Andy Gospodarek d519e17e2d 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>
2009-10-05 00:43:35 -07:00
..
9p virtio: add virtio IDs file 2009-09-23 22:26:32 +09:30
802 net: remove COMPAT_NET_DEV_OPS 2009-05-25 01:53:53 -07:00
8021q net: fix vlan_get_size to include vlan_flags size 2009-09-26 20:16:07 -07:00
appletalk Have atalk_route_packet() return NET_RX_SUCCESS not NET_XMIT_SUCCESS 2009-09-14 17:02:47 -07:00
atm net: Make setsockopt() optlen be unsigned. 2009-09-30 16:12:20 -07:00
ax25 ax25: Fix possible oops in ax25_make_new 2009-09-30 16:44:12 -07:00
bluetooth net: Make setsockopt() optlen be unsigned. 2009-09-30 16:12:20 -07:00
bridge bridge: Fix double-free in br_add_if. 2009-09-28 12:54:25 -07:00
can net: Make setsockopt() optlen be unsigned. 2009-09-30 16:12:20 -07:00
core net: export device speed and duplex via sysfs 2009-10-05 00:43:35 -07:00
dcb net: fix double skb free in dcbnl 2009-09-26 20:16:15 -07:00
dccp net: Make setsockopt() optlen be unsigned. 2009-09-30 16:12:20 -07:00
decnet net: Make setsockopt() optlen be unsigned. 2009-09-30 16:12:20 -07:00
dsa netdev: convert pseudo-devices to netdev_tx_t 2009-09-01 01:13:07 -07:00
econet Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2009-08-12 17:44:53 -07:00
ethernet net: remove COMPAT_NET_DEV_OPS 2009-05-25 01:53:53 -07:00
ieee802154 net: Make setsockopt() optlen be unsigned. 2009-09-30 16:12:20 -07:00
ipv4 tunnels: Optimize tx path 2009-10-05 00:21:57 -07:00
ipv6 tunnels: Optimize tx path 2009-10-05 00:21:57 -07:00
ipx net: Make setsockopt() optlen be unsigned. 2009-09-30 16:12:20 -07:00
irda net: Make setsockopt() optlen be unsigned. 2009-09-30 16:12:20 -07:00
iucv net: Make setsockopt() optlen be unsigned. 2009-09-30 16:12:20 -07:00
key net: file_operations should be const 2009-09-02 01:03:53 -07:00
lapb net: remove NET_RX_BAD and NET_RX_CN* defines 2009-07-05 19:15:35 -07:00
llc net: Make setsockopt() optlen be unsigned. 2009-09-30 16:12:20 -07:00
mac80211 cfg80211: assign device type in netdev notifier callback 2009-10-05 00:43:34 -07:00
netfilter net: Make setsockopt() optlen be unsigned. 2009-09-30 16:12:20 -07:00
netlabel Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2009-07-30 19:22:43 -07:00
netlink net: Make setsockopt() optlen be unsigned. 2009-09-30 16:12:20 -07:00
netrom net: Make setsockopt() optlen be unsigned. 2009-09-30 16:12:20 -07:00
packet af_packet: add interframe drop cmsg (v6) 2009-10-05 00:21:55 -07:00
phonet Phonet: fix mutex imbalance 2009-09-30 16:41:34 -07:00
rds net: Make setsockopt() optlen be unsigned. 2009-09-30 16:12:20 -07:00
rfkill headers: remove sched.h from poll.h 2009-10-04 15:05:10 -07:00
rose net: Make setsockopt() optlen be unsigned. 2009-09-30 16:12:20 -07:00
rxrpc net: Make setsockopt() optlen be unsigned. 2009-09-30 16:12:20 -07:00
sched trivial: fix typo "to to" in multiple files 2009-09-21 15:14:55 +02:00
sctp net: Make setsockopt() optlen be unsigned. 2009-09-30 16:12:20 -07:00
sunrpc net: fix htmldocs sunrpc, clnt.c 2009-09-24 15:39:14 -07:00
tipc net: Make setsockopt() optlen be unsigned. 2009-09-30 16:12:20 -07:00
unix net: unix: fix sending fds in multiple buffers 2009-09-11 11:31:45 -07:00
wanrouter headers: smp_lock.h redux 2009-07-12 12:22:34 -07:00
wimax wimax: fix warning caused by not checking retval of rfkill_set_hw_state() 2009-06-11 11:12:48 -07:00
wireless cfg80211: assign device type in netdev notifier callback 2009-10-05 00:43:34 -07:00
x25 net: Make setsockopt() optlen be unsigned. 2009-09-30 16:12:20 -07:00
xfrm net: file_operations should be const 2009-09-02 01:03:53 -07:00
compat.c net: Make setsockopt() optlen be unsigned. 2009-09-30 16:12:20 -07:00
Kconfig net/compat/wext: send different messages to compat tasks 2009-07-15 08:53:39 -07:00
Makefile net: remove redundant sched/ in net/Makefile 2009-07-12 20:11:14 -07:00
nonet.c
socket.c net: Make setsockopt() optlen be unsigned. 2009-09-30 16:12:20 -07:00
sysctl_net.c net: sysctl_net - use net_eq to compare nets 2009-03-16 16:23:30 +01:00
TUNABLE