Documentation/netlink/specs/tcp_metrics.yaml

Source file repositories/reference/linux-study-clean/Documentation/netlink/specs/tcp_metrics.yaml

File Facts

System: Linux kernel
Corpus path: Documentation/netlink/specs/tcp_metrics.yaml
Extension: .yaml
Size: 3714 bytes
Lines: 170
Domain: Support Tooling And Documentation
Bucket: Documentation
Inferred role: Support Tooling And Documentation: configuration, schema, or hardware description
Status: atlas-only

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.

Dependency Surface

No C-style include directives detected by the generator.

Detected Declarations

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

Annotated Snippet

# SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause)
---
name: tcp_metrics

protocol: genetlink-legacy

doc: |
  Management interface for TCP metrics.

c-family-name: tcp-metrics-genl-name
c-version-name: tcp-metrics-genl-version
max-by-define: true
kernel-policy: global

definitions:
  -
    name: tcp-fastopen-cookie-max
    type: const
    value: 16

attribute-sets:
  -
    name: tcp-metrics
    name-prefix: tcp-metrics-attr-
    attributes:
      -
        name: addr-ipv4
        type: u32
        byte-order: big-endian
        display-hint: ipv4
      -
        name: addr-ipv6
        type: binary
        checks:
          min-len: 16
        byte-order: big-endian
        display-hint: ipv6
      -
        name: age
        type: u64
      -
        name: tw-tsval
        type: u32
        doc: unused
      -
        name: tw-ts-stamp
        type: s32
        doc: unused
      -
        name: vals
        type: nest
        nested-attributes: metrics
      -
        name: fopen-mss
        type: u16
      -
        name: fopen-syn-drops
        type: u16
      -
        name: fopen-syn-drop-ts
        type: u64
      -
        name: fopen-cookie
        type: binary
        checks:
          min-len: tcp-fastopen-cookie-max
      -
        name: saddr-ipv4
        type: u32
        byte-order: big-endian

Annotation

Atlas domain: Support Tooling And Documentation / Documentation.
Implementation status: atlas-only.

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.