include/net/fib_notifier.h

File Facts

System

Linux kernel

Corpus path

include/net/fib_notifier.h

Extension

.h

Size

1390 bytes

Lines

52

Domain

Networking Core

Bucket

Sockets, Protocols, Packet Path, And Network Policy

Inferred role

Networking Core: implementation source

Status

source implementation candidate

Why This File Exists

Networking stack implementation surface: socket APIs, protocol dispatch, packet flow, routing, filtering, and network namespaces.

• Networking stack implementation surface: socket APIs, protocol dispatch, packet flow, routing, filtering, and network namespaces.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/types.h
• linux/notifier.h
• net/net_namespace.h

Detected Declarations

• struct module
• struct fib_notifier_info
• struct fib_notifier_ops
• enum fib_event_type

Annotated Snippet

struct fib_notifier_info {
	int family;
	struct netlink_ext_ack  *extack;
};

enum fib_event_type {
	FIB_EVENT_ENTRY_REPLACE,
	FIB_EVENT_ENTRY_APPEND,
	FIB_EVENT_ENTRY_ADD,
	FIB_EVENT_ENTRY_DEL,
	FIB_EVENT_RULE_ADD,
	FIB_EVENT_RULE_DEL,
	FIB_EVENT_NH_ADD,
	FIB_EVENT_NH_DEL,
	FIB_EVENT_VIF_ADD,
	FIB_EVENT_VIF_DEL,
};

struct fib_notifier_ops {
	int family;
	struct list_head list;
	unsigned int (*fib_seq_read)(const struct net *net);
	int (*fib_dump)(struct net *net, struct notifier_block *nb,
			struct netlink_ext_ack *extack);
	struct module *owner;
	struct rcu_head rcu;
};

int call_fib_notifier(struct notifier_block *nb,
		      enum fib_event_type event_type,
		      struct fib_notifier_info *info);
int call_fib_notifiers(struct net *net, enum fib_event_type event_type,
		       struct fib_notifier_info *info);
int register_fib_notifier(struct net *net, struct notifier_block *nb,
			  void (*cb)(struct notifier_block *nb),
			  struct netlink_ext_ack *extack);
int unregister_fib_notifier(struct net *net, struct notifier_block *nb);
struct fib_notifier_ops *
fib_notifier_ops_register(const struct fib_notifier_ops *tmpl, struct net *net);
void fib_notifier_ops_unregister(struct fib_notifier_ops *ops);

#endif

Annotation

• Immediate include surface: `linux/types.h`, `linux/notifier.h`, `net/net_namespace.h`.
• Detected declarations: `struct module`, `struct fib_notifier_info`, `struct fib_notifier_ops`, `enum fib_event_type`.
• Atlas domain: Networking Core / Sockets, Protocols, Packet Path, And Network Policy.
• Implementation status: source implementation candidate.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.