net/ipv4/udp_diag.c

File Facts

System

Linux kernel

Corpus path

net/ipv4/udp_diag.c

Extension

.c

Size

5743 bytes

Lines

236

Domain

Networking Core

Bucket

Sockets, Protocols, Packet Path, And Network Policy

Inferred role

Networking Core: exported/initcall integration point

Status

integration 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.
• Exports symbols or registers init work; inspect boot/module ordering and who consumes the exported contract.
• Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/module.h
• linux/inet_diag.h
• linux/udp.h
• net/udp.h
• linux/sock_diag.h

Detected Declarations

• function sk_diag_dump
• function udp_diag_dump_one
• function udp_diag_dump
• function sk_for_each
• function udp_diag_get_info
• function udp_diag_destroy
• function udp_diag_init
• function udp_diag_exit
• module init udp_diag_init

Annotated Snippet

module_init(udp_diag_init);
module_exit(udp_diag_exit);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("UDP socket monitoring via SOCK_DIAG");
MODULE_ALIAS_NET_PF_PROTO_TYPE(PF_NETLINK, NETLINK_SOCK_DIAG, 2-17 /* AF_INET - IPPROTO_UDP */);

Annotation

• Immediate include surface: `linux/module.h`, `linux/inet_diag.h`, `linux/udp.h`, `net/udp.h`, `linux/sock_diag.h`.
• Detected declarations: `function sk_diag_dump`, `function udp_diag_dump_one`, `function udp_diag_dump`, `function sk_for_each`, `function udp_diag_get_info`, `function udp_diag_destroy`, `function udp_diag_init`, `function udp_diag_exit`, `module init udp_diag_init`.
• Atlas domain: Networking Core / Sockets, Protocols, Packet Path, And Network Policy.
• Implementation status: integration implementation candidate.
• Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.

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.