net/dns_resolver/internal.h

File Facts

System

Linux kernel

Corpus path

net/dns_resolver/internal.h

Extension

.h

Size

814 bytes

Lines

40

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/compiler.h
• linux/kernel.h
• linux/sched.h

Detected Declarations

• No top-level syscall, struct, function, initcall, or export declaration detected by the generator.

Annotated Snippet

#include <linux/compiler.h>
#include <linux/kernel.h>
#include <linux/sched.h>

/*
 * Layout of key payload words.
 */
enum {
	dns_key_data,
	dns_key_error,
};

/*
 * dns_key.c
 */
extern const struct cred *dns_resolver_cache;

/*
 * debug tracing
 */
extern unsigned int dns_resolver_debug;

#define	kdebug(FMT, ...)				\
do {							\
	if (unlikely(dns_resolver_debug))		\
		printk(KERN_DEBUG "[%-6.6s] "FMT"\n",	\
		       current->comm, ##__VA_ARGS__);	\
} while (0)

#define kenter(FMT, ...) kdebug("==> %s("FMT")", __func__, ##__VA_ARGS__)
#define kleave(FMT, ...) kdebug("<== %s()"FMT"", __func__, ##__VA_ARGS__)

Annotation

• Immediate include surface: `linux/compiler.h`, `linux/kernel.h`, `linux/sched.h`.
• 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.