tools/testing/selftests/tc-testing/action.c

File Facts

System

Linux kernel

Corpus path

tools/testing/selftests/tc-testing/action.c

Extension

.c

Size

622 bytes

Lines

24

Domain

Support Tooling And Documentation

Bucket

tools

Inferred role

Support Tooling And Documentation: implementation source

Status

source implementation candidate

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

• Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/bpf.h
• linux/pkt_cls.h

Detected Declarations

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

Annotated Snippet

#include <linux/bpf.h>
#include <linux/pkt_cls.h>

__attribute__((section("action-ok"),used)) int action_ok(struct __sk_buff *s)
{
	return TC_ACT_OK;
}

__attribute__((section("action-ko"),used)) int action_ko(struct __sk_buff *s)
{
	s->data = 0x0;
	return TC_ACT_OK;
}

char _license[] __attribute__((section("license"),used)) = "GPL";

Annotation

• Immediate include surface: `linux/bpf.h`, `linux/pkt_cls.h`.
• Atlas domain: Support Tooling And Documentation / tools.
• 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.