Understanding Linux Network Internals

Functions and Variables Featured in This Chapter

Table 4-2 summarizes the functions and data structures introduced in this chapter.

Table 4-2. Functions, macros, and data structures used for notification chains

Name	Description
Functions and macros
notifier_chain_register + wrappers notifier_chain_unregister + wrappers notifier_call_chain	The first two functions register and unregister a callback handler for a notification chain. The third sends out all the notifications about events in a specific class.
Data structure
struct notifier_block	Defines the handler for a notification. It includes the callback function to invoke.