How do I find what kernel module is behind a network interface?
On the command line run
sudo lshw -C network
For every network interface you'll get a section starting with *-network
. Every section hast a logical name:
line that contains the interface name and a configuration:
line that contain the driver and some other information.
You can query sysfs to tell you this information. To tell which driver a network interface is using:
ls -l /sys/class/net/<devname>/device/driver
... where <devname>
is something like eth0
. This driver
directory will be a symlink to the driver node in sysfs.
To get the name of the module that provides that driver:
ls -l /sys/class/net/<devname>/device/driver/module
... and this module
directory will be a symlink to the module node in sysfs.
IMHO for scripts the best is to use sysfs info (as Jeremy Kerr shows), but for more info:
ethtool -i IFACE_NAME
E.g.:
$ ethtool -i eth0
driver: 8139cp
version: 1.3
firmware-version:
bus-info: 0000:00:07.0
supports-statistics: yes
supports-test: no
supports-eeprom-access: yes
supports-register-dump: yes
supports-priv-flags: no