October 2017
Intermediate to advanced
586 pages
14h 8m
English
Content preview from Linux Device Drivers Development
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Status and control
Device control refers to a situation where the kernel needs to change properties of the interface on its own initiative, or in response to a user action. It can then use either operations exposed through the struct net_device_ops structure, as discussed, or use another control tool, ethtool, which requires the driver to introduce a new set of hooks, which we will discuss in the next section. Conversely, the status reports the state of the interface.