[PATCH v3 00/16] Don't generate netlink .rst files inside $(srctree)

[PATCH v3 00/16] Don't generate netlink .rst files inside $(srctree)

[Mauro Carvalho Chehab]

As discussed at:
   https://lore.kernel.org/all/20250610101331.62ba466f@foz.lan/

changeset f061c9f7d058 ("Documentation: Document each netlink family")
added a logic which generates *.rst files inside $(srctree). This is bad
when O=<BUILDDIR> is used.

A recent change renamed the yaml files used by Netlink, revealing a bad
side effect: as "make cleandocs" don't clean the produced files and symbols
appear duplicated for people that don't build the kernel from scratch.

There are some possible solutions for that. The simplest one is to places
the build files inside Documentation/output. The changes to do that are
simple enough, but has one drawback, as it requires a (simple) template file
for every netlink family file from netlink/specs. This was done on version
1 of this series.

Since version 2, we're addressing it the right Sphinx way: adding an
yaml parser extension. We opted to write such extension in a way that no
actual yaml conversion code is inside it. This makes it flexible enough
to handle other types of yaml files in the future. The actual yaml
conversion logic were placed at scripts/lib/netlink_yml_parser.py. The
existing command line tool was also modified to use the library ther.

With this version, there's no need to add any template file per netlink/spec
file. Yet, the Documentation/netlink/specs/index.rst require updates as
spec files are added/renamed/removed. The already-existing script can
update running:

            tools/net/ynl/pyynl/ynl_gen_rst.py -x  -v -o Documentation/netlink/specs/index.rst

Alternatively, someone could manually update the file. I tried to do the
index generation at build time, but it didn't work properly (at least
when using SPHINXDOCS).

-

I took some time to check Sphinx performance. On a Ryzen 9 7900 machine
(24 CPU threads), building with default "-j auto" mode is about
30% slower than using "-j8". The time to build with "-j8" there is similar
to the time of building with "-jauto" on a notebook with 8 CPU threads.

Maybe we should change the default at Documentation/sphinx/parallel-wrapper.sh
to use a better default than "auto".

On my machine, running it on python3.13t (thread-free) takes 5:35 minutes:

	$ time make -j8 htmldocs
	...
	<frozen importlib._bootstrap>:488: RuntimeWarning: The global interpreter lock (GIL) has been enabled to load module 'yaml._yaml', which has not declared that it can run safely without the GIL. To override this behavior and keep the GIL disabled (at your own risk), run with PYTHON_GIL=0 or -Xgil=0.
	...
	real    5m35,125s
	user    12m21,973s
	sys     2m29,956s

The non-thread-free version is a little bit slower:

	real    6m21,788s
	user    12m44,493s
	sys     1m48,337s

But it is still taking about the same time as before this change.

Both tests were done with Sphinx 8.2.3.

---

v3:
- Two series got merged altogether:
  - https://lore.kernel.org/linux-doc/cover.1749723671.git.mchehab+huawei@kernel.org/T/#t
  - https://lore.kernel.org/linux-doc/cover.1749735022.git.mchehab+huawei@kernel.org

- Added an extra patch to update MAINTAINERS to point to YNL library
- Added a (somewhat unrelated) patch that remove warnings check when
  running "make cleandocs".

---

v2:
- Use a Sphinx extension to handle netlink files.

v1:
- Statically add template files to as networking/netlink_spec/<family>.rst

Mauro Carvalho Chehab (16):
  tools: ynl_gen_rst.py: create a top-level reference
  docs: netlink: netlink-raw.rst: use :ref: instead of :doc:
  docs: netlink: don't ignore generated rst files
  tools: ynl_gen_rst.py: make the index parser more generic
  tools: ynl_gen_rst.py: Split library from command line tool
  scripts: lib: netlink_yml_parser.py: use classes
  tools: ynl_gen_rst.py: do some coding style cleanups
  scripts: netlink_yml_parser.py: improve index.rst generation
  docs: sphinx: add a parser template for yaml files
  docs: sphinx: parser_yaml.py: add Netlink specs parser
  docs: use parser_yaml extension to handle Netlink specs
  docs: conf.py: don't handle yaml files outside Netlink specs
  docs: conf.py: add include_pattern to speedup
  docs: uapi: netlink: update netlink specs link
  MAINTAINERS: add maintainers for netlink_yml_parser.py
  docs: Makefile: disable check rules on make cleandocs

 .pylintrc                                     |   2 +-
 Documentation/Makefile                        |  19 +-
 Documentation/conf.py                         |  20 +-
 Documentation/netlink/specs/index.rst         |  38 ++
 Documentation/networking/index.rst            |   2 +-
 .../networking/netlink_spec/.gitignore        |   1 -
 .../networking/netlink_spec/readme.txt        |   4 -
 Documentation/sphinx/parser_yaml.py           |  80 ++++
 Documentation/userspace-api/netlink/index.rst |   2 +-
 .../userspace-api/netlink/netlink-raw.rst     |   6 +-
 Documentation/userspace-api/netlink/specs.rst |   2 +-
 MAINTAINERS                                   |   2 +
 scripts/lib/netlink_yml_parser.py             | 394 ++++++++++++++++++
 tools/net/ynl/pyynl/ynl_gen_rst.py            | 378 +----------------
 14 files changed, 553 insertions(+), 397 deletions(-)
 create mode 100644 Documentation/netlink/specs/index.rst
 delete mode 100644 Documentation/networking/netlink_spec/.gitignore
 delete mode 100644 Documentation/networking/netlink_spec/readme.txt
 create mode 100755 Documentation/sphinx/parser_yaml.py
 create mode 100755 scripts/lib/netlink_yml_parser.py

-- 
2.49.0

[PATCH v3 01/16] tools: ynl_gen_rst.py: create a top-level reference

[Mauro Carvalho Chehab]

Currently, rt documents are referred with:

Documentation/userspace-api/netlink/netlink-raw.rst: :doc:`rt-link<../../networking/netlink_spec/rt-link>`
Documentation/userspace-api/netlink/netlink-raw.rst: :doc:`tc<../../networking/netlink_spec/tc>`
Documentation/userspace-api/netlink/netlink-raw.rst: :doc:`tc<../../networking/netlink_spec/tc>`

that's hard to maintain, and may break if we change the way
rst files are generated from yaml. Better to use instead a
reference for the netlink family.

So, add a netlink-<foo> reference to all generated docs.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
---
 tools/net/ynl/pyynl/ynl_gen_rst.py | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/tools/net/ynl/pyynl/ynl_gen_rst.py b/tools/net/ynl/pyynl/ynl_gen_rst.py
index 0cb6348e28d3..7bfb8ceeeefc 100755
--- a/tools/net/ynl/pyynl/ynl_gen_rst.py
+++ b/tools/net/ynl/pyynl/ynl_gen_rst.py
@@ -314,10 +314,11 @@ def parse_yaml(obj: Dict[str, Any]) -> str:
 
     # Main header
 
-    lines.append(rst_header())
-
     family = obj['name']
 
+    lines.append(rst_header())
+    lines.append(rst_label("netlink-" + family))
+
     title = f"Family ``{family}`` netlink specification"
     lines.append(rst_title(title))
     lines.append(rst_paragraph(".. contents:: :depth: 3\n"))
-- 
2.49.0

[PATCH v3 02/16] docs: netlink: netlink-raw.rst: use :ref: instead of :doc:

[Mauro Carvalho Chehab]

Having :doc: references with relative paths doesn't always work,
as it may have troubles when O= is used. So, replace them by
Sphinx cross-reference tag that are now created by ynl_gen_rst.py.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
---
 Documentation/userspace-api/netlink/netlink-raw.rst | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/Documentation/userspace-api/netlink/netlink-raw.rst b/Documentation/userspace-api/netlink/netlink-raw.rst
index 31fc91020eb3..aae296c170c5 100644
--- a/Documentation/userspace-api/netlink/netlink-raw.rst
+++ b/Documentation/userspace-api/netlink/netlink-raw.rst
@@ -62,8 +62,8 @@ Sub-messages
 ------------
 
 Several raw netlink families such as
-:doc:`rt-link<../../networking/netlink_spec/rt-link>` and
-:doc:`tc<../../networking/netlink_spec/tc>` use attribute nesting as an
+:ref:`rt-link<netlink-rt-link>` and
+:ref:`tc<netlink-tc>` use attribute nesting as an
 abstraction to carry module specific information.
 
 Conceptually it looks as follows::
@@ -162,7 +162,7 @@ then this is an error.
 Nested struct definitions
 -------------------------
 
-Many raw netlink families such as :doc:`tc<../../networking/netlink_spec/tc>`
+Many raw netlink families such as :ref:`tc<netlink-tc>`
 make use of nested struct definitions. The ``netlink-raw`` schema makes it
 possible to embed a struct within a struct definition using the ``struct``
 property. For example, the following struct definition embeds the
-- 
2.49.0

[PATCH v3 03/16] docs: netlink: don't ignore generated rst files

[Mauro Carvalho Chehab]

Currently, the build system generates ReST files inside the
source directory. This is not a good idea, specially when
we have renames, as make clean won't get rid of them.

As the first step to address the issue, stop ignoring those
files. This way, we can see exactly what has been produced
at build time inside $(srctree):

        Documentation/networking/netlink_spec/conntrack.rst
        Documentation/networking/netlink_spec/devlink.rst
        Documentation/networking/netlink_spec/dpll.rst
        Documentation/networking/netlink_spec/ethtool.rst
        Documentation/networking/netlink_spec/fou.rst
        Documentation/networking/netlink_spec/handshake.rst
        Documentation/networking/netlink_spec/index.rst
        Documentation/networking/netlink_spec/lockd.rst
        Documentation/networking/netlink_spec/mptcp_pm.rst
        Documentation/networking/netlink_spec/net_shaper.rst
        Documentation/networking/netlink_spec/netdev.rst
        Documentation/networking/netlink_spec/nfsd.rst
        Documentation/networking/netlink_spec/nftables.rst
        Documentation/networking/netlink_spec/nl80211.rst
        Documentation/networking/netlink_spec/nlctrl.rst
        Documentation/networking/netlink_spec/ovs_datapath.rst
        Documentation/networking/netlink_spec/ovs_flow.rst
        Documentation/networking/netlink_spec/ovs_vport.rst
        Documentation/networking/netlink_spec/rt_addr.rst
        Documentation/networking/netlink_spec/rt_link.rst
        Documentation/networking/netlink_spec/rt_neigh.rst
        Documentation/networking/netlink_spec/rt_route.rst
        Documentation/networking/netlink_spec/rt_rule.rst
        Documentation/networking/netlink_spec/tc.rst
        Documentation/networking/netlink_spec/tcp_metrics.rst
        Documentation/networking/netlink_spec/team.rst

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
---
 Documentation/networking/netlink_spec/.gitignore | 1 -
 1 file changed, 1 deletion(-)
 delete mode 100644 Documentation/networking/netlink_spec/.gitignore

diff --git a/Documentation/networking/netlink_spec/.gitignore b/Documentation/networking/netlink_spec/.gitignore
deleted file mode 100644
index 30d85567b592..000000000000
--- a/Documentation/networking/netlink_spec/.gitignore
+++ /dev/null
@@ -1 +0,0 @@
-*.rst
-- 
2.49.0

[PATCH v3 04/16] tools: ynl_gen_rst.py: make the index parser more generic

[Mauro Carvalho Chehab]

It is not a good practice to store build-generated files
inside $(srctree), as one may be using O=<BUILDDIR> and even
have the Kernel on a read-only directory.

Change the YAML generation for netlink files to allow it
to parse data based on the source or on the object tree.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
---
 tools/net/ynl/pyynl/ynl_gen_rst.py | 22 ++++++++++++++++------
 1 file changed, 16 insertions(+), 6 deletions(-)

diff --git a/tools/net/ynl/pyynl/ynl_gen_rst.py b/tools/net/ynl/pyynl/ynl_gen_rst.py
index 7bfb8ceeeefc..b1e5acafb998 100755
--- a/tools/net/ynl/pyynl/ynl_gen_rst.py
+++ b/tools/net/ynl/pyynl/ynl_gen_rst.py
@@ -365,6 +365,7 @@ def parse_arguments() -> argparse.Namespace:
 
     parser.add_argument("-v", "--verbose", action="store_true")
     parser.add_argument("-o", "--output", help="Output file name")
+    parser.add_argument("-d", "--input_dir", help="YAML input directory")
 
     # Index and input are mutually exclusive
     group = parser.add_mutually_exclusive_group()
@@ -405,11 +406,14 @@ def write_to_rstfile(content: str, filename: str) -> None:
     """Write the generated content into an RST file"""
     logging.debug("Saving RST file to %s", filename)
 
+    dir = os.path.dirname(filename)
+    os.makedirs(dir, exist_ok=True)
+
     with open(filename, "w", encoding="utf-8") as rst_file:
         rst_file.write(content)
 
 
-def generate_main_index_rst(output: str) -> None:
+def generate_main_index_rst(output: str, index_dir: str) -> None:
     """Generate the `networking_spec/index` content and write to the file"""
     lines = []
 
@@ -418,12 +422,18 @@ def generate_main_index_rst(output: str) -> None:
     lines.append(rst_title("Netlink Family Specifications"))
     lines.append(rst_toctree(1))
 
-    index_dir = os.path.dirname(output)
-    logging.debug("Looking for .rst files in %s", index_dir)
+    index_fname = os.path.basename(output)
+    base, ext = os.path.splitext(index_fname)
+
+    if not index_dir:
+        index_dir = os.path.dirname(output)
+
+    logging.debug(f"Looking for {ext} files in %s", index_dir)
     for filename in sorted(os.listdir(index_dir)):
-        if not filename.endswith(".rst") or filename == "index.rst":
+        if not filename.endswith(ext) or filename == index_fname:
             continue
-        lines.append(f"   {filename.replace('.rst', '')}\n")
+        base, ext = os.path.splitext(filename)
+        lines.append(f"   {base}\n")
 
     logging.debug("Writing an index file at %s", output)
     write_to_rstfile("".join(lines), output)
@@ -447,7 +457,7 @@ def main() -> None:
 
     if args.index:
         # Generate the index RST file
-        generate_main_index_rst(args.output)
+        generate_main_index_rst(args.output, args.input_dir)
 
 
 if __name__ == "__main__":
-- 
2.49.0

[PATCH v3 05/16] tools: ynl_gen_rst.py: Split library from command line tool

[Mauro Carvalho Chehab]

As we'll be using the Netlink specs parser inside a Sphinx
extension, move the library part from the command line parser.

No functional changes.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
---
 scripts/lib/netlink_yml_parser.py  | 391 +++++++++++++++++++++++++++++
 tools/net/ynl/pyynl/ynl_gen_rst.py | 374 +--------------------------
 2 files changed, 401 insertions(+), 364 deletions(-)
 create mode 100755 scripts/lib/netlink_yml_parser.py

diff --git a/scripts/lib/netlink_yml_parser.py b/scripts/lib/netlink_yml_parser.py
new file mode 100755
index 000000000000..3c15b578f947
--- /dev/null
+++ b/scripts/lib/netlink_yml_parser.py
@@ -0,0 +1,391 @@
+#!/usr/bin/env python3
+# SPDX-License-Identifier: GPL-2.0
+# -*- coding: utf-8; mode: python -*-
+
+"""
+    Script to auto generate the documentation for Netlink specifications.
+
+    :copyright:  Copyright (C) 2023  Breno Leitao <leitao@debian.org>
+    :license:    GPL Version 2, June 1991 see linux/COPYING for details.
+
+    This script performs extensive parsing to the Linux kernel's netlink YAML
+    spec files, in an effort to avoid needing to heavily mark up the original
+    YAML file.
+
+    This code is split in three big parts:
+        1) RST formatters: Use to convert a string to a RST output
+        2) Parser helpers: Functions to parse the YAML data structure
+        3) Main function and small helpers
+"""
+
+from typing import Any, Dict, List
+import os.path
+import logging
+import yaml
+
+
+SPACE_PER_LEVEL = 4
+
+
+# RST Formatters
+# ==============
+def headroom(level: int) -> str:
+    """Return space to format"""
+    return " " * (level * SPACE_PER_LEVEL)
+
+
+def bold(text: str) -> str:
+    """Format bold text"""
+    return f"**{text}**"
+
+
+def inline(text: str) -> str:
+    """Format inline text"""
+    return f"``{text}``"
+
+
+def sanitize(text: str) -> str:
+    """Remove newlines and multiple spaces"""
+    # This is useful for some fields that are spread across multiple lines
+    return str(text).replace("\n", " ").strip()
+
+
+def rst_fields(key: str, value: str, level: int = 0) -> str:
+    """Return a RST formatted field"""
+    return headroom(level) + f":{key}: {value}"
+
+
+def rst_definition(key: str, value: Any, level: int = 0) -> str:
+    """Format a single rst definition"""
+    return headroom(level) + key + "\n" + headroom(level + 1) + str(value)
+
+
+def rst_paragraph(paragraph: str, level: int = 0) -> str:
+    """Return a formatted paragraph"""
+    return headroom(level) + paragraph
+
+
+def rst_bullet(item: str, level: int = 0) -> str:
+    """Return a formatted a bullet"""
+    return headroom(level) + f"- {item}"
+
+
+def rst_subsection(title: str) -> str:
+    """Add a sub-section to the document"""
+    return f"{title}\n" + "-" * len(title)
+
+
+def rst_subsubsection(title: str) -> str:
+    """Add a sub-sub-section to the document"""
+    return f"{title}\n" + "~" * len(title)
+
+
+def rst_section(namespace: str, prefix: str, title: str) -> str:
+    """Add a section to the document"""
+    return f".. _{namespace}-{prefix}-{title}:\n\n{title}\n" + "=" * len(title)
+
+
+def rst_subtitle(title: str) -> str:
+    """Add a subtitle to the document"""
+    return "\n" + "-" * len(title) + f"\n{title}\n" + "-" * len(title) + "\n\n"
+
+
+def rst_title(title: str) -> str:
+    """Add a title to the document"""
+    return "=" * len(title) + f"\n{title}\n" + "=" * len(title) + "\n\n"
+
+
+def rst_list_inline(list_: List[str], level: int = 0) -> str:
+    """Format a list using inlines"""
+    return headroom(level) + "[" + ", ".join(inline(i) for i in list_) + "]"
+
+
+def rst_ref(namespace: str, prefix: str, name: str) -> str:
+    """Add a hyperlink to the document"""
+    mappings = {'enum': 'definition',
+                'fixed-header': 'definition',
+                'nested-attributes': 'attribute-set',
+                'struct': 'definition'}
+    if prefix in mappings:
+        prefix = mappings[prefix]
+    return f":ref:`{namespace}-{prefix}-{name}`"
+
+
+def rst_header() -> str:
+    """The headers for all the auto generated RST files"""
+    lines = []
+
+    lines.append(rst_paragraph(".. SPDX-License-Identifier: GPL-2.0"))
+    lines.append(rst_paragraph(".. NOTE: This document was auto-generated.\n\n"))
+
+    return "\n".join(lines)
+
+
+def rst_toctree(maxdepth: int = 2) -> str:
+    """Generate a toctree RST primitive"""
+    lines = []
+
+    lines.append(".. toctree::")
+    lines.append(f"   :maxdepth: {maxdepth}\n\n")
+
+    return "\n".join(lines)
+
+
+def rst_label(title: str) -> str:
+    """Return a formatted label"""
+    return f".. _{title}:\n\n"
+
+
+# Parsers
+# =======
+
+
+def parse_mcast_group(mcast_group: List[Dict[str, Any]]) -> str:
+    """Parse 'multicast' group list and return a formatted string"""
+    lines = []
+    for group in mcast_group:
+        lines.append(rst_bullet(group["name"]))
+
+    return "\n".join(lines)
+
+
+def parse_do(do_dict: Dict[str, Any], level: int = 0) -> str:
+    """Parse 'do' section and return a formatted string"""
+    lines = []
+    for key in do_dict.keys():
+        lines.append(rst_paragraph(bold(key), level + 1))
+        if key in ['request', 'reply']:
+            lines.append(parse_do_attributes(do_dict[key], level + 1) + "\n")
+        else:
+            lines.append(headroom(level + 2) + do_dict[key] + "\n")
+
+    return "\n".join(lines)
+
+
+def parse_do_attributes(attrs: Dict[str, Any], level: int = 0) -> str:
+    """Parse 'attributes' section"""
+    if "attributes" not in attrs:
+        return ""
+    lines = [rst_fields("attributes", rst_list_inline(attrs["attributes"]), level + 1)]
+
+    return "\n".join(lines)
+
+
+def parse_operations(operations: List[Dict[str, Any]], namespace: str) -> str:
+    """Parse operations block"""
+    preprocessed = ["name", "doc", "title", "do", "dump", "flags"]
+    linkable = ["fixed-header", "attribute-set"]
+    lines = []
+
+    for operation in operations:
+        lines.append(rst_section(namespace, 'operation', operation["name"]))
+        lines.append(rst_paragraph(operation["doc"]) + "\n")
+
+        for key in operation.keys():
+            if key in preprocessed:
+                # Skip the special fields
+                continue
+            value = operation[key]
+            if key in linkable:
+                value = rst_ref(namespace, key, value)
+            lines.append(rst_fields(key, value, 0))
+        if 'flags' in operation:
+            lines.append(rst_fields('flags', rst_list_inline(operation['flags'])))
+
+        if "do" in operation:
+            lines.append(rst_paragraph(":do:", 0))
+            lines.append(parse_do(operation["do"], 0))
+        if "dump" in operation:
+            lines.append(rst_paragraph(":dump:", 0))
+            lines.append(parse_do(operation["dump"], 0))
+
+        # New line after fields
+        lines.append("\n")
+
+    return "\n".join(lines)
+
+
+def parse_entries(entries: List[Dict[str, Any]], level: int) -> str:
+    """Parse a list of entries"""
+    ignored = ["pad"]
+    lines = []
+    for entry in entries:
+        if isinstance(entry, dict):
+            # entries could be a list or a dictionary
+            field_name = entry.get("name", "")
+            if field_name in ignored:
+                continue
+            type_ = entry.get("type")
+            if type_:
+                field_name += f" ({inline(type_)})"
+            lines.append(
+                rst_fields(field_name, sanitize(entry.get("doc", "")), level)
+            )
+        elif isinstance(entry, list):
+            lines.append(rst_list_inline(entry, level))
+        else:
+            lines.append(rst_bullet(inline(sanitize(entry)), level))
+
+    lines.append("\n")
+    return "\n".join(lines)
+
+
+def parse_definitions(defs: Dict[str, Any], namespace: str) -> str:
+    """Parse definitions section"""
+    preprocessed = ["name", "entries", "members"]
+    ignored = ["render-max"]  # This is not printed
+    lines = []
+
+    for definition in defs:
+        lines.append(rst_section(namespace, 'definition', definition["name"]))
+        for k in definition.keys():
+            if k in preprocessed + ignored:
+                continue
+            lines.append(rst_fields(k, sanitize(definition[k]), 0))
+
+        # Field list needs to finish with a new line
+        lines.append("\n")
+        if "entries" in definition:
+            lines.append(rst_paragraph(":entries:", 0))
+            lines.append(parse_entries(definition["entries"], 1))
+        if "members" in definition:
+            lines.append(rst_paragraph(":members:", 0))
+            lines.append(parse_entries(definition["members"], 1))
+
+    return "\n".join(lines)
+
+
+def parse_attr_sets(entries: List[Dict[str, Any]], namespace: str) -> str:
+    """Parse attribute from attribute-set"""
+    preprocessed = ["name", "type"]
+    linkable = ["enum", "nested-attributes", "struct", "sub-message"]
+    ignored = ["checks"]
+    lines = []
+
+    for entry in entries:
+        lines.append(rst_section(namespace, 'attribute-set', entry["name"]))
+        for attr in entry["attributes"]:
+            type_ = attr.get("type")
+            attr_line = attr["name"]
+            if type_:
+                # Add the attribute type in the same line
+                attr_line += f" ({inline(type_)})"
+
+            lines.append(rst_subsubsection(attr_line))
+
+            for k in attr.keys():
+                if k in preprocessed + ignored:
+                    continue
+                if k in linkable:
+                    value = rst_ref(namespace, k, attr[k])
+                else:
+                    value = sanitize(attr[k])
+                lines.append(rst_fields(k, value, 0))
+            lines.append("\n")
+
+    return "\n".join(lines)
+
+
+def parse_sub_messages(entries: List[Dict[str, Any]], namespace: str) -> str:
+    """Parse sub-message definitions"""
+    lines = []
+
+    for entry in entries:
+        lines.append(rst_section(namespace, 'sub-message', entry["name"]))
+        for fmt in entry["formats"]:
+            value = fmt["value"]
+
+            lines.append(rst_bullet(bold(value)))
+            for attr in ['fixed-header', 'attribute-set']:
+                if attr in fmt:
+                    lines.append(rst_fields(attr,
+                                            rst_ref(namespace, attr, fmt[attr]),
+                                            1))
+            lines.append("\n")
+
+    return "\n".join(lines)
+
+
+def parse_yaml(obj: Dict[str, Any]) -> str:
+    """Format the whole YAML into a RST string"""
+    lines = []
+
+    # Main header
+
+    family = obj['name']
+
+    lines.append(rst_header())
+    lines.append(rst_label("netlink-" + family))
+
+    title = f"Family ``{family}`` netlink specification"
+    lines.append(rst_title(title))
+    lines.append(rst_paragraph(".. contents:: :depth: 3\n"))
+
+    if "doc" in obj:
+        lines.append(rst_subtitle("Summary"))
+        lines.append(rst_paragraph(obj["doc"], 0))
+
+    # Operations
+    if "operations" in obj:
+        lines.append(rst_subtitle("Operations"))
+        lines.append(parse_operations(obj["operations"]["list"], family))
+
+    # Multicast groups
+    if "mcast-groups" in obj:
+        lines.append(rst_subtitle("Multicast groups"))
+        lines.append(parse_mcast_group(obj["mcast-groups"]["list"]))
+
+    # Definitions
+    if "definitions" in obj:
+        lines.append(rst_subtitle("Definitions"))
+        lines.append(parse_definitions(obj["definitions"], family))
+
+    # Attributes set
+    if "attribute-sets" in obj:
+        lines.append(rst_subtitle("Attribute sets"))
+        lines.append(parse_attr_sets(obj["attribute-sets"], family))
+
+    # Sub-messages
+    if "sub-messages" in obj:
+        lines.append(rst_subtitle("Sub-messages"))
+        lines.append(parse_sub_messages(obj["sub-messages"], family))
+
+    return "\n".join(lines)
+
+
+# Main functions
+# ==============
+
+
+def parse_yaml_file(filename: str) -> str:
+    """Transform the YAML specified by filename into an RST-formatted string"""
+    with open(filename, "r", encoding="utf-8") as spec_file:
+        yaml_data = yaml.safe_load(spec_file)
+        content = parse_yaml(yaml_data)
+
+    return content
+
+
+def generate_main_index_rst(output: str, index_dir: str) -> str:
+    """Generate the `networking_spec/index` content and write to the file"""
+    lines = []
+
+    lines.append(rst_header())
+    lines.append(rst_label("specs"))
+    lines.append(rst_title("Netlink Family Specifications"))
+    lines.append(rst_toctree(1))
+
+    index_fname = os.path.basename(output)
+    base, ext = os.path.splitext(index_fname)
+
+    if not index_dir:
+        index_dir = os.path.dirname(output)
+
+    logging.debug(f"Looking for {ext} files in %s", index_dir)
+    for filename in sorted(os.listdir(index_dir)):
+        if not filename.endswith(ext) or filename == index_fname:
+            continue
+        base, ext = os.path.splitext(filename)
+        lines.append(f"   {base}\n")
+
+    return "".join(lines), output
diff --git a/tools/net/ynl/pyynl/ynl_gen_rst.py b/tools/net/ynl/pyynl/ynl_gen_rst.py
index b1e5acafb998..38dafe3d9179 100755
--- a/tools/net/ynl/pyynl/ynl_gen_rst.py
+++ b/tools/net/ynl/pyynl/ynl_gen_rst.py
@@ -18,345 +18,17 @@
         3) Main function and small helpers
 """
 
-from typing import Any, Dict, List
 import os.path
 import sys
 import argparse
 import logging
-import yaml
 
+LIB_DIR = "../../../../scripts/lib"
+SRC_DIR = os.path.dirname(os.path.realpath(__file__))
 
-SPACE_PER_LEVEL = 4
+sys.path.insert(0, os.path.join(SRC_DIR, LIB_DIR))
 
-
-# RST Formatters
-# ==============
-def headroom(level: int) -> str:
-    """Return space to format"""
-    return " " * (level * SPACE_PER_LEVEL)
-
-
-def bold(text: str) -> str:
-    """Format bold text"""
-    return f"**{text}**"
-
-
-def inline(text: str) -> str:
-    """Format inline text"""
-    return f"``{text}``"
-
-
-def sanitize(text: str) -> str:
-    """Remove newlines and multiple spaces"""
-    # This is useful for some fields that are spread across multiple lines
-    return str(text).replace("\n", " ").strip()
-
-
-def rst_fields(key: str, value: str, level: int = 0) -> str:
-    """Return a RST formatted field"""
-    return headroom(level) + f":{key}: {value}"
-
-
-def rst_definition(key: str, value: Any, level: int = 0) -> str:
-    """Format a single rst definition"""
-    return headroom(level) + key + "\n" + headroom(level + 1) + str(value)
-
-
-def rst_paragraph(paragraph: str, level: int = 0) -> str:
-    """Return a formatted paragraph"""
-    return headroom(level) + paragraph
-
-
-def rst_bullet(item: str, level: int = 0) -> str:
-    """Return a formatted a bullet"""
-    return headroom(level) + f"- {item}"
-
-
-def rst_subsection(title: str) -> str:
-    """Add a sub-section to the document"""
-    return f"{title}\n" + "-" * len(title)
-
-
-def rst_subsubsection(title: str) -> str:
-    """Add a sub-sub-section to the document"""
-    return f"{title}\n" + "~" * len(title)
-
-
-def rst_section(namespace: str, prefix: str, title: str) -> str:
-    """Add a section to the document"""
-    return f".. _{namespace}-{prefix}-{title}:\n\n{title}\n" + "=" * len(title)
-
-
-def rst_subtitle(title: str) -> str:
-    """Add a subtitle to the document"""
-    return "\n" + "-" * len(title) + f"\n{title}\n" + "-" * len(title) + "\n\n"
-
-
-def rst_title(title: str) -> str:
-    """Add a title to the document"""
-    return "=" * len(title) + f"\n{title}\n" + "=" * len(title) + "\n\n"
-
-
-def rst_list_inline(list_: List[str], level: int = 0) -> str:
-    """Format a list using inlines"""
-    return headroom(level) + "[" + ", ".join(inline(i) for i in list_) + "]"
-
-
-def rst_ref(namespace: str, prefix: str, name: str) -> str:
-    """Add a hyperlink to the document"""
-    mappings = {'enum': 'definition',
-                'fixed-header': 'definition',
-                'nested-attributes': 'attribute-set',
-                'struct': 'definition'}
-    if prefix in mappings:
-        prefix = mappings[prefix]
-    return f":ref:`{namespace}-{prefix}-{name}`"
-
-
-def rst_header() -> str:
-    """The headers for all the auto generated RST files"""
-    lines = []
-
-    lines.append(rst_paragraph(".. SPDX-License-Identifier: GPL-2.0"))
-    lines.append(rst_paragraph(".. NOTE: This document was auto-generated.\n\n"))
-
-    return "\n".join(lines)
-
-
-def rst_toctree(maxdepth: int = 2) -> str:
-    """Generate a toctree RST primitive"""
-    lines = []
-
-    lines.append(".. toctree::")
-    lines.append(f"   :maxdepth: {maxdepth}\n\n")
-
-    return "\n".join(lines)
-
-
-def rst_label(title: str) -> str:
-    """Return a formatted label"""
-    return f".. _{title}:\n\n"
-
-
-# Parsers
-# =======
-
-
-def parse_mcast_group(mcast_group: List[Dict[str, Any]]) -> str:
-    """Parse 'multicast' group list and return a formatted string"""
-    lines = []
-    for group in mcast_group:
-        lines.append(rst_bullet(group["name"]))
-
-    return "\n".join(lines)
-
-
-def parse_do(do_dict: Dict[str, Any], level: int = 0) -> str:
-    """Parse 'do' section and return a formatted string"""
-    lines = []
-    for key in do_dict.keys():
-        lines.append(rst_paragraph(bold(key), level + 1))
-        if key in ['request', 'reply']:
-            lines.append(parse_do_attributes(do_dict[key], level + 1) + "\n")
-        else:
-            lines.append(headroom(level + 2) + do_dict[key] + "\n")
-
-    return "\n".join(lines)
-
-
-def parse_do_attributes(attrs: Dict[str, Any], level: int = 0) -> str:
-    """Parse 'attributes' section"""
-    if "attributes" not in attrs:
-        return ""
-    lines = [rst_fields("attributes", rst_list_inline(attrs["attributes"]), level + 1)]
-
-    return "\n".join(lines)
-
-
-def parse_operations(operations: List[Dict[str, Any]], namespace: str) -> str:
-    """Parse operations block"""
-    preprocessed = ["name", "doc", "title", "do", "dump", "flags"]
-    linkable = ["fixed-header", "attribute-set"]
-    lines = []
-
-    for operation in operations:
-        lines.append(rst_section(namespace, 'operation', operation["name"]))
-        lines.append(rst_paragraph(operation["doc"]) + "\n")
-
-        for key in operation.keys():
-            if key in preprocessed:
-                # Skip the special fields
-                continue
-            value = operation[key]
-            if key in linkable:
-                value = rst_ref(namespace, key, value)
-            lines.append(rst_fields(key, value, 0))
-        if 'flags' in operation:
-            lines.append(rst_fields('flags', rst_list_inline(operation['flags'])))
-
-        if "do" in operation:
-            lines.append(rst_paragraph(":do:", 0))
-            lines.append(parse_do(operation["do"], 0))
-        if "dump" in operation:
-            lines.append(rst_paragraph(":dump:", 0))
-            lines.append(parse_do(operation["dump"], 0))
-
-        # New line after fields
-        lines.append("\n")
-
-    return "\n".join(lines)
-
-
-def parse_entries(entries: List[Dict[str, Any]], level: int) -> str:
-    """Parse a list of entries"""
-    ignored = ["pad"]
-    lines = []
-    for entry in entries:
-        if isinstance(entry, dict):
-            # entries could be a list or a dictionary
-            field_name = entry.get("name", "")
-            if field_name in ignored:
-                continue
-            type_ = entry.get("type")
-            if type_:
-                field_name += f" ({inline(type_)})"
-            lines.append(
-                rst_fields(field_name, sanitize(entry.get("doc", "")), level)
-            )
-        elif isinstance(entry, list):
-            lines.append(rst_list_inline(entry, level))
-        else:
-            lines.append(rst_bullet(inline(sanitize(entry)), level))
-
-    lines.append("\n")
-    return "\n".join(lines)
-
-
-def parse_definitions(defs: Dict[str, Any], namespace: str) -> str:
-    """Parse definitions section"""
-    preprocessed = ["name", "entries", "members"]
-    ignored = ["render-max"]  # This is not printed
-    lines = []
-
-    for definition in defs:
-        lines.append(rst_section(namespace, 'definition', definition["name"]))
-        for k in definition.keys():
-            if k in preprocessed + ignored:
-                continue
-            lines.append(rst_fields(k, sanitize(definition[k]), 0))
-
-        # Field list needs to finish with a new line
-        lines.append("\n")
-        if "entries" in definition:
-            lines.append(rst_paragraph(":entries:", 0))
-            lines.append(parse_entries(definition["entries"], 1))
-        if "members" in definition:
-            lines.append(rst_paragraph(":members:", 0))
-            lines.append(parse_entries(definition["members"], 1))
-
-    return "\n".join(lines)
-
-
-def parse_attr_sets(entries: List[Dict[str, Any]], namespace: str) -> str:
-    """Parse attribute from attribute-set"""
-    preprocessed = ["name", "type"]
-    linkable = ["enum", "nested-attributes", "struct", "sub-message"]
-    ignored = ["checks"]
-    lines = []
-
-    for entry in entries:
-        lines.append(rst_section(namespace, 'attribute-set', entry["name"]))
-        for attr in entry["attributes"]:
-            type_ = attr.get("type")
-            attr_line = attr["name"]
-            if type_:
-                # Add the attribute type in the same line
-                attr_line += f" ({inline(type_)})"
-
-            lines.append(rst_subsubsection(attr_line))
-
-            for k in attr.keys():
-                if k in preprocessed + ignored:
-                    continue
-                if k in linkable:
-                    value = rst_ref(namespace, k, attr[k])
-                else:
-                    value = sanitize(attr[k])
-                lines.append(rst_fields(k, value, 0))
-            lines.append("\n")
-
-    return "\n".join(lines)
-
-
-def parse_sub_messages(entries: List[Dict[str, Any]], namespace: str) -> str:
-    """Parse sub-message definitions"""
-    lines = []
-
-    for entry in entries:
-        lines.append(rst_section(namespace, 'sub-message', entry["name"]))
-        for fmt in entry["formats"]:
-            value = fmt["value"]
-
-            lines.append(rst_bullet(bold(value)))
-            for attr in ['fixed-header', 'attribute-set']:
-                if attr in fmt:
-                    lines.append(rst_fields(attr,
-                                            rst_ref(namespace, attr, fmt[attr]),
-                                            1))
-            lines.append("\n")
-
-    return "\n".join(lines)
-
-
-def parse_yaml(obj: Dict[str, Any]) -> str:
-    """Format the whole YAML into a RST string"""
-    lines = []
-
-    # Main header
-
-    family = obj['name']
-
-    lines.append(rst_header())
-    lines.append(rst_label("netlink-" + family))
-
-    title = f"Family ``{family}`` netlink specification"
-    lines.append(rst_title(title))
-    lines.append(rst_paragraph(".. contents:: :depth: 3\n"))
-
-    if "doc" in obj:
-        lines.append(rst_subtitle("Summary"))
-        lines.append(rst_paragraph(obj["doc"], 0))
-
-    # Operations
-    if "operations" in obj:
-        lines.append(rst_subtitle("Operations"))
-        lines.append(parse_operations(obj["operations"]["list"], family))
-
-    # Multicast groups
-    if "mcast-groups" in obj:
-        lines.append(rst_subtitle("Multicast groups"))
-        lines.append(parse_mcast_group(obj["mcast-groups"]["list"]))
-
-    # Definitions
-    if "definitions" in obj:
-        lines.append(rst_subtitle("Definitions"))
-        lines.append(parse_definitions(obj["definitions"], family))
-
-    # Attributes set
-    if "attribute-sets" in obj:
-        lines.append(rst_subtitle("Attribute sets"))
-        lines.append(parse_attr_sets(obj["attribute-sets"], family))
-
-    # Sub-messages
-    if "sub-messages" in obj:
-        lines.append(rst_subtitle("Sub-messages"))
-        lines.append(parse_sub_messages(obj["sub-messages"], family))
-
-    return "\n".join(lines)
-
-
-# Main functions
-# ==============
+from netlink_yml_parser import parse_yaml_file, generate_main_index_rst
 
 
 def parse_arguments() -> argparse.Namespace:
@@ -393,50 +65,24 @@ def parse_arguments() -> argparse.Namespace:
     return args
 
 
-def parse_yaml_file(filename: str) -> str:
-    """Transform the YAML specified by filename into an RST-formatted string"""
-    with open(filename, "r", encoding="utf-8") as spec_file:
-        yaml_data = yaml.safe_load(spec_file)
-        content = parse_yaml(yaml_data)
-
-    return content
-
-
 def write_to_rstfile(content: str, filename: str) -> None:
     """Write the generated content into an RST file"""
     logging.debug("Saving RST file to %s", filename)
 
-    dir = os.path.dirname(filename)
-    os.makedirs(dir, exist_ok=True)
+    directory = os.path.dirname(filename)
+    os.makedirs(directory, exist_ok=True)
 
     with open(filename, "w", encoding="utf-8") as rst_file:
         rst_file.write(content)
 
 
-def generate_main_index_rst(output: str, index_dir: str) -> None:
+def write_index_rst(output: str, index_dir: str) -> None:
     """Generate the `networking_spec/index` content and write to the file"""
-    lines = []
 
-    lines.append(rst_header())
-    lines.append(rst_label("specs"))
-    lines.append(rst_title("Netlink Family Specifications"))
-    lines.append(rst_toctree(1))
-
-    index_fname = os.path.basename(output)
-    base, ext = os.path.splitext(index_fname)
-
-    if not index_dir:
-        index_dir = os.path.dirname(output)
-
-    logging.debug(f"Looking for {ext} files in %s", index_dir)
-    for filename in sorted(os.listdir(index_dir)):
-        if not filename.endswith(ext) or filename == index_fname:
-            continue
-        base, ext = os.path.splitext(filename)
-        lines.append(f"   {base}\n")
+    msg = generate_main_index_rst(output, index_dir)
 
     logging.debug("Writing an index file at %s", output)
-    write_to_rstfile("".join(lines), output)
+    write_to_rstfile(msg, output)
 
 
 def main() -> None:
@@ -457,7 +103,7 @@ def main() -> None:
 
     if args.index:
         # Generate the index RST file
-        generate_main_index_rst(args.output, args.input_dir)
+        write_index_rst(args.output, args.input_dir)
 
 
 if __name__ == "__main__":
-- 
2.49.0

[PATCH v3 06/16] scripts: lib: netlink_yml_parser.py: use classes

[Mauro Carvalho Chehab]

As we'll be importing netlink parser into a Sphinx extension,
move all functions and global variables inside two classes:

- RstFormatters, containing ReST formatter logic, which are
  YAML independent;
- NetlinkYamlParser: contains the actual parser classes. That's
  the only class that needs to be imported by the script or by
  a Sphinx extension.

With that, we won't pollute Sphinx namespace, avoiding any
potential clashes.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
---
 scripts/lib/netlink_yml_parser.py  | 592 +++++++++++++++--------------
 tools/net/ynl/pyynl/ynl_gen_rst.py |  19 +-
 2 files changed, 313 insertions(+), 298 deletions(-)

diff --git a/scripts/lib/netlink_yml_parser.py b/scripts/lib/netlink_yml_parser.py
index 3c15b578f947..8d7961a1a256 100755
--- a/scripts/lib/netlink_yml_parser.py
+++ b/scripts/lib/netlink_yml_parser.py
@@ -3,389 +3,407 @@
 # -*- coding: utf-8; mode: python -*-
 
 """
-    Script to auto generate the documentation for Netlink specifications.
+    Class to auto generate the documentation for Netlink specifications.
 
     :copyright:  Copyright (C) 2023  Breno Leitao <leitao@debian.org>
     :license:    GPL Version 2, June 1991 see linux/COPYING for details.
 
-    This script performs extensive parsing to the Linux kernel's netlink YAML
+    This class performs extensive parsing to the Linux kernel's netlink YAML
     spec files, in an effort to avoid needing to heavily mark up the original
     YAML file.
 
-    This code is split in three big parts:
+    This code is split in two classes:
         1) RST formatters: Use to convert a string to a RST output
         2) Parser helpers: Functions to parse the YAML data structure
-        3) Main function and small helpers
 """
 
 from typing import Any, Dict, List
 import os.path
+import sys
+import argparse
 import logging
 import yaml
 
 
-SPACE_PER_LEVEL = 4
-
-
+# ==============
 # RST Formatters
 # ==============
-def headroom(level: int) -> str:
-    """Return space to format"""
-    return " " * (level * SPACE_PER_LEVEL)
+class RstFormatters:
+    SPACE_PER_LEVEL = 4
 
+    @staticmethod
+    def headroom(level: int) -> str:
+        """Return space to format"""
+        return " " * (level * RstFormatters.SPACE_PER_LEVEL)
 
-def bold(text: str) -> str:
-    """Format bold text"""
-    return f"**{text}**"
 
+    @staticmethod
+    def bold(text: str) -> str:
+        """Format bold text"""
+        return f"**{text}**"
 
-def inline(text: str) -> str:
-    """Format inline text"""
-    return f"``{text}``"
 
+    @staticmethod
+    def inline(text: str) -> str:
+        """Format inline text"""
+        return f"``{text}``"
 
-def sanitize(text: str) -> str:
-    """Remove newlines and multiple spaces"""
-    # This is useful for some fields that are spread across multiple lines
-    return str(text).replace("\n", " ").strip()
 
+    @staticmethod
+    def sanitize(text: str) -> str:
+        """Remove newlines and multiple spaces"""
+        # This is useful for some fields that are spread across multiple lines
+        return str(text).replace("\n", " ").strip()
 
-def rst_fields(key: str, value: str, level: int = 0) -> str:
-    """Return a RST formatted field"""
-    return headroom(level) + f":{key}: {value}"
 
+    def rst_fields(self, key: str, value: str, level: int = 0) -> str:
+        """Return a RST formatted field"""
+        return self.headroom(level) + f":{key}: {value}"
 
-def rst_definition(key: str, value: Any, level: int = 0) -> str:
-    """Format a single rst definition"""
-    return headroom(level) + key + "\n" + headroom(level + 1) + str(value)
 
+    def rst_definition(self, key: str, value: Any, level: int = 0) -> str:
+        """Format a single rst definition"""
+        return self.headroom(level) + key + "\n" + self.headroom(level + 1) + str(value)
 
-def rst_paragraph(paragraph: str, level: int = 0) -> str:
-    """Return a formatted paragraph"""
-    return headroom(level) + paragraph
 
+    def rst_paragraph(self, paragraph: str, level: int = 0) -> str:
+        """Return a formatted paragraph"""
+        return self.headroom(level) + paragraph
 
-def rst_bullet(item: str, level: int = 0) -> str:
-    """Return a formatted a bullet"""
-    return headroom(level) + f"- {item}"
 
+    def rst_bullet(self, item: str, level: int = 0) -> str:
+        """Return a formatted a bullet"""
+        return self.headroom(level) + f"- {item}"
 
-def rst_subsection(title: str) -> str:
-    """Add a sub-section to the document"""
-    return f"{title}\n" + "-" * len(title)
 
+    @staticmethod
+    def rst_subsection(title: str) -> str:
+        """Add a sub-section to the document"""
+        return f"{title}\n" + "-" * len(title)
 
-def rst_subsubsection(title: str) -> str:
-    """Add a sub-sub-section to the document"""
-    return f"{title}\n" + "~" * len(title)
 
+    @staticmethod
+    def rst_subsubsection(title: str) -> str:
+        """Add a sub-sub-section to the document"""
+        return f"{title}\n" + "~" * len(title)
 
-def rst_section(namespace: str, prefix: str, title: str) -> str:
-    """Add a section to the document"""
-    return f".. _{namespace}-{prefix}-{title}:\n\n{title}\n" + "=" * len(title)
 
+    @staticmethod
+    def rst_section(namespace: str, prefix: str, title: str) -> str:
+        """Add a section to the document"""
+        return f".. _{namespace}-{prefix}-{title}:\n\n{title}\n" + "=" * len(title)
 
-def rst_subtitle(title: str) -> str:
-    """Add a subtitle to the document"""
-    return "\n" + "-" * len(title) + f"\n{title}\n" + "-" * len(title) + "\n\n"
 
+    @staticmethod
+    def rst_subtitle(title: str) -> str:
+        """Add a subtitle to the document"""
+        return "\n" + "-" * len(title) + f"\n{title}\n" + "-" * len(title) + "\n\n"
 
-def rst_title(title: str) -> str:
-    """Add a title to the document"""
-    return "=" * len(title) + f"\n{title}\n" + "=" * len(title) + "\n\n"
 
+    @staticmethod
+    def rst_title(title: str) -> str:
+        """Add a title to the document"""
+        return "=" * len(title) + f"\n{title}\n" + "=" * len(title) + "\n\n"
 
-def rst_list_inline(list_: List[str], level: int = 0) -> str:
-    """Format a list using inlines"""
-    return headroom(level) + "[" + ", ".join(inline(i) for i in list_) + "]"
 
+    def rst_list_inline(self, list_: List[str], level: int = 0) -> str:
+        """Format a list using inlines"""
+        return self.headroom(level) + "[" + ", ".join(self.inline(i) for i in list_) + "]"
 
-def rst_ref(namespace: str, prefix: str, name: str) -> str:
-    """Add a hyperlink to the document"""
-    mappings = {'enum': 'definition',
-                'fixed-header': 'definition',
-                'nested-attributes': 'attribute-set',
-                'struct': 'definition'}
-    if prefix in mappings:
-        prefix = mappings[prefix]
-    return f":ref:`{namespace}-{prefix}-{name}`"
 
+    @staticmethod
+    def rst_ref(namespace: str, prefix: str, name: str) -> str:
+        """Add a hyperlink to the document"""
+        mappings = {'enum': 'definition',
+                    'fixed-header': 'definition',
+                    'nested-attributes': 'attribute-set',
+                    'struct': 'definition'}
+        if prefix in mappings:
+            prefix = mappings[prefix]
+        return f":ref:`{namespace}-{prefix}-{name}`"
 
-def rst_header() -> str:
-    """The headers for all the auto generated RST files"""
-    lines = []
 
-    lines.append(rst_paragraph(".. SPDX-License-Identifier: GPL-2.0"))
-    lines.append(rst_paragraph(".. NOTE: This document was auto-generated.\n\n"))
+    def rst_header(self) -> str:
+        """The headers for all the auto generated RST files"""
+        lines = []
 
-    return "\n".join(lines)
+        lines.append(self.rst_paragraph(".. SPDX-License-Identifier: GPL-2.0"))
+        lines.append(self.rst_paragraph(".. NOTE: This document was auto-generated.\n\n"))
 
+        return "\n".join(lines)
 
-def rst_toctree(maxdepth: int = 2) -> str:
-    """Generate a toctree RST primitive"""
-    lines = []
 
-    lines.append(".. toctree::")
-    lines.append(f"   :maxdepth: {maxdepth}\n\n")
+    @staticmethod
+    def rst_toctree(maxdepth: int = 2) -> str:
+        """Generate a toctree RST primitive"""
+        lines = []
 
-    return "\n".join(lines)
+        lines.append(".. toctree::")
+        lines.append(f"   :maxdepth: {maxdepth}\n\n")
 
+        return "\n".join(lines)
 
-def rst_label(title: str) -> str:
-    """Return a formatted label"""
-    return f".. _{title}:\n\n"
 
+    @staticmethod
+    def rst_label(title: str) -> str:
+        """Return a formatted label"""
+        return f".. _{title}:\n\n"
 
+# =======
 # Parsers
 # =======
+class NetlinkYamlParser:
+
+    fmt = RstFormatters()
+
+    def parse_mcast_group(self, mcast_group: List[Dict[str, Any]]) -> str:
+        """Parse 'multicast' group list and return a formatted string"""
+        lines = []
+        for group in mcast_group:
+            lines.append(self.fmt.rst_bullet(group["name"]))
+
+        return "\n".join(lines)
+
+
+    def parse_do(self, do_dict: Dict[str, Any], level: int = 0) -> str:
+        """Parse 'do' section and return a formatted string"""
+        lines = []
+        for key in do_dict.keys():
+            lines.append(self.fmt.rst_paragraph(self.fmt.bold(key), level + 1))
+            if key in ['request', 'reply']:
+                lines.append(self.parse_do_attributes(do_dict[key], level + 1) + "\n")
+            else:
+                lines.append(self.fmt.headroom(level + 2) + do_dict[key] + "\n")
+
+        return "\n".join(lines)
+
+
+    def parse_do_attributes(self, attrs: Dict[str, Any], level: int = 0) -> str:
+        """Parse 'attributes' section"""
+        if "attributes" not in attrs:
+            return ""
+        lines = [self.fmt.rst_fields("attributes", self.fmt.rst_list_inline(attrs["attributes"]), level + 1)]
+
+        return "\n".join(lines)
+
+
+    def parse_operations(self, operations: List[Dict[str, Any]], namespace: str) -> str:
+        """Parse operations block"""
+        preprocessed = ["name", "doc", "title", "do", "dump", "flags"]
+        linkable = ["fixed-header", "attribute-set"]
+        lines = []
+
+        for operation in operations:
+            lines.append(self.fmt.rst_section(namespace, 'operation', operation["name"]))
+            lines.append(self.fmt.rst_paragraph(operation["doc"]) + "\n")
+
+            for key in operation.keys():
+                if key in preprocessed:
+                    # Skip the special fields
+                    continue
+                value = operation[key]
+                if key in linkable:
+                    value = self.fmt.rst_ref(namespace, key, value)
+                lines.append(self.fmt.rst_fields(key, value, 0))
+            if 'flags' in operation:
+                lines.append(self.fmt.rst_fields('flags', self.fmt.rst_list_inline(operation['flags'])))
+
+            if "do" in operation:
+                lines.append(self.fmt.rst_paragraph(":do:", 0))
+                lines.append(self.parse_do(operation["do"], 0))
+            if "dump" in operation:
+                lines.append(self.fmt.rst_paragraph(":dump:", 0))
+                lines.append(self.parse_do(operation["dump"], 0))
+
+            # New line after fields
+            lines.append("\n")
+
+        return "\n".join(lines)
+
+
+    def parse_entries(self, entries: List[Dict[str, Any]], level: int) -> str:
+        """Parse a list of entries"""
+        ignored = ["pad"]
+        lines = []
+        for entry in entries:
+            if isinstance(entry, dict):
+                # entries could be a list or a dictionary
+                field_name = entry.get("name", "")
+                if field_name in ignored:
+                    continue
+                type_ = entry.get("type")
+                if type_:
+                    field_name += f" ({self.fmt.inline(type_)})"
+                lines.append(
+                    self.fmt.rst_fields(field_name, self.fmt.sanitize(entry.get("doc", "")), level)
+                )
+            elif isinstance(entry, list):
+                lines.append(self.fmt.rst_list_inline(entry, level))
+            else:
+                lines.append(self.fmt.rst_bullet(self.fmt.inline(self.fmt.sanitize(entry)), level))
 
+        lines.append("\n")
+        return "\n".join(lines)
 
-def parse_mcast_group(mcast_group: List[Dict[str, Any]]) -> str:
-    """Parse 'multicast' group list and return a formatted string"""
-    lines = []
-    for group in mcast_group:
-        lines.append(rst_bullet(group["name"]))
-
-    return "\n".join(lines)
-
-
-def parse_do(do_dict: Dict[str, Any], level: int = 0) -> str:
-    """Parse 'do' section and return a formatted string"""
-    lines = []
-    for key in do_dict.keys():
-        lines.append(rst_paragraph(bold(key), level + 1))
-        if key in ['request', 'reply']:
-            lines.append(parse_do_attributes(do_dict[key], level + 1) + "\n")
-        else:
-            lines.append(headroom(level + 2) + do_dict[key] + "\n")
-
-    return "\n".join(lines)
-
-
-def parse_do_attributes(attrs: Dict[str, Any], level: int = 0) -> str:
-    """Parse 'attributes' section"""
-    if "attributes" not in attrs:
-        return ""
-    lines = [rst_fields("attributes", rst_list_inline(attrs["attributes"]), level + 1)]
-
-    return "\n".join(lines)
-
-
-def parse_operations(operations: List[Dict[str, Any]], namespace: str) -> str:
-    """Parse operations block"""
-    preprocessed = ["name", "doc", "title", "do", "dump", "flags"]
-    linkable = ["fixed-header", "attribute-set"]
-    lines = []
-
-    for operation in operations:
-        lines.append(rst_section(namespace, 'operation', operation["name"]))
-        lines.append(rst_paragraph(operation["doc"]) + "\n")
-
-        for key in operation.keys():
-            if key in preprocessed:
-                # Skip the special fields
-                continue
-            value = operation[key]
-            if key in linkable:
-                value = rst_ref(namespace, key, value)
-            lines.append(rst_fields(key, value, 0))
-        if 'flags' in operation:
-            lines.append(rst_fields('flags', rst_list_inline(operation['flags'])))
-
-        if "do" in operation:
-            lines.append(rst_paragraph(":do:", 0))
-            lines.append(parse_do(operation["do"], 0))
-        if "dump" in operation:
-            lines.append(rst_paragraph(":dump:", 0))
-            lines.append(parse_do(operation["dump"], 0))
 
-        # New line after fields
-        lines.append("\n")
+    def parse_definitions(self, defs: Dict[str, Any], namespace: str) -> str:
+        """Parse definitions section"""
+        preprocessed = ["name", "entries", "members"]
+        ignored = ["render-max"]  # This is not printed
+        lines = []
 
-    return "\n".join(lines)
-
-
-def parse_entries(entries: List[Dict[str, Any]], level: int) -> str:
-    """Parse a list of entries"""
-    ignored = ["pad"]
-    lines = []
-    for entry in entries:
-        if isinstance(entry, dict):
-            # entries could be a list or a dictionary
-            field_name = entry.get("name", "")
-            if field_name in ignored:
-                continue
-            type_ = entry.get("type")
-            if type_:
-                field_name += f" ({inline(type_)})"
-            lines.append(
-                rst_fields(field_name, sanitize(entry.get("doc", "")), level)
-            )
-        elif isinstance(entry, list):
-            lines.append(rst_list_inline(entry, level))
-        else:
-            lines.append(rst_bullet(inline(sanitize(entry)), level))
-
-    lines.append("\n")
-    return "\n".join(lines)
-
-
-def parse_definitions(defs: Dict[str, Any], namespace: str) -> str:
-    """Parse definitions section"""
-    preprocessed = ["name", "entries", "members"]
-    ignored = ["render-max"]  # This is not printed
-    lines = []
-
-    for definition in defs:
-        lines.append(rst_section(namespace, 'definition', definition["name"]))
-        for k in definition.keys():
-            if k in preprocessed + ignored:
-                continue
-            lines.append(rst_fields(k, sanitize(definition[k]), 0))
-
-        # Field list needs to finish with a new line
-        lines.append("\n")
-        if "entries" in definition:
-            lines.append(rst_paragraph(":entries:", 0))
-            lines.append(parse_entries(definition["entries"], 1))
-        if "members" in definition:
-            lines.append(rst_paragraph(":members:", 0))
-            lines.append(parse_entries(definition["members"], 1))
-
-    return "\n".join(lines)
-
-
-def parse_attr_sets(entries: List[Dict[str, Any]], namespace: str) -> str:
-    """Parse attribute from attribute-set"""
-    preprocessed = ["name", "type"]
-    linkable = ["enum", "nested-attributes", "struct", "sub-message"]
-    ignored = ["checks"]
-    lines = []
-
-    for entry in entries:
-        lines.append(rst_section(namespace, 'attribute-set', entry["name"]))
-        for attr in entry["attributes"]:
-            type_ = attr.get("type")
-            attr_line = attr["name"]
-            if type_:
-                # Add the attribute type in the same line
-                attr_line += f" ({inline(type_)})"
-
-            lines.append(rst_subsubsection(attr_line))
-
-            for k in attr.keys():
+        for definition in defs:
+            lines.append(self.fmt.rst_section(namespace, 'definition', definition["name"]))
+            for k in definition.keys():
                 if k in preprocessed + ignored:
                     continue
-                if k in linkable:
-                    value = rst_ref(namespace, k, attr[k])
-                else:
-                    value = sanitize(attr[k])
-                lines.append(rst_fields(k, value, 0))
+                lines.append(self.fmt.rst_fields(k, self.fmt.sanitize(definition[k]), 0))
+
+            # Field list needs to finish with a new line
             lines.append("\n")
+            if "entries" in definition:
+                lines.append(self.fmt.rst_paragraph(":entries:", 0))
+                lines.append(self.parse_entries(definition["entries"], 1))
+            if "members" in definition:
+                lines.append(self.fmt.rst_paragraph(":members:", 0))
+                lines.append(self.parse_entries(definition["members"], 1))
 
-    return "\n".join(lines)
+        return "\n".join(lines)
 
 
-def parse_sub_messages(entries: List[Dict[str, Any]], namespace: str) -> str:
-    """Parse sub-message definitions"""
-    lines = []
+    def parse_attr_sets(self, entries: List[Dict[str, Any]], namespace: str) -> str:
+        """Parse attribute from attribute-set"""
+        preprocessed = ["name", "type"]
+        linkable = ["enum", "nested-attributes", "struct", "sub-message"]
+        ignored = ["checks"]
+        lines = []
 
-    for entry in entries:
-        lines.append(rst_section(namespace, 'sub-message', entry["name"]))
-        for fmt in entry["formats"]:
-            value = fmt["value"]
+        for entry in entries:
+            lines.append(self.fmt.rst_section(namespace, 'attribute-set', entry["name"]))
+            for attr in entry["attributes"]:
+                type_ = attr.get("type")
+                attr_line = attr["name"]
+                if type_:
+                    # Add the attribute type in the same line
+                    attr_line += f" ({self.fmt.inline(type_)})"
 
-            lines.append(rst_bullet(bold(value)))
-            for attr in ['fixed-header', 'attribute-set']:
-                if attr in fmt:
-                    lines.append(rst_fields(attr,
-                                            rst_ref(namespace, attr, fmt[attr]),
-                                            1))
-            lines.append("\n")
+                lines.append(self.fmt.rst_subsubsection(attr_line))
+
+                for k in attr.keys():
+                    if k in preprocessed + ignored:
+                        continue
+                    if k in linkable:
+                        value = self.fmt.rst_ref(namespace, k, attr[k])
+                    else:
+                        value = self.fmt.sanitize(attr[k])
+                    lines.append(self.fmt.rst_fields(k, value, 0))
+                lines.append("\n")
+
+        return "\n".join(lines)
+
+
+    def parse_sub_messages(self, entries: List[Dict[str, Any]], namespace: str) -> str:
+        """Parse sub-message definitions"""
+        lines = []
+
+        for entry in entries:
+            lines.append(self.fmt.rst_section(namespace, 'sub-message', entry["name"]))
+            for fmt in entry["formats"]:
+                value = fmt["value"]
+
+                lines.append(self.fmt.rst_bullet(self.fmt.bold(value)))
+                for attr in ['fixed-header', 'attribute-set']:
+                    if attr in fmt:
+                        lines.append(self.fmt.rst_fields(attr,
+                                                self.fmt.rst_ref(namespace, attr, fmt[attr]),
+                                                1))
+                lines.append("\n")
+
+        return "\n".join(lines)
 
-    return "\n".join(lines)
 
+    def parse_yaml(self, obj: Dict[str, Any]) -> str:
+        """Format the whole YAML into a RST string"""
+        lines = []
 
-def parse_yaml(obj: Dict[str, Any]) -> str:
-    """Format the whole YAML into a RST string"""
-    lines = []
+        # Main header
 
-    # Main header
+        family = obj['name']
 
-    family = obj['name']
+        lines.append(self.fmt.rst_header())
+        lines.append(self.fmt.rst_label("netlink-" + family))
 
-    lines.append(rst_header())
-    lines.append(rst_label("netlink-" + family))
+        title = f"Family ``{family}`` netlink specification"
+        lines.append(self.fmt.rst_title(title))
+        lines.append(self.fmt.rst_paragraph(".. contents:: :depth: 3\n"))
 
-    title = f"Family ``{family}`` netlink specification"
-    lines.append(rst_title(title))
-    lines.append(rst_paragraph(".. contents:: :depth: 3\n"))
+        if "doc" in obj:
+            lines.append(self.fmt.rst_subtitle("Summary"))
+            lines.append(self.fmt.rst_paragraph(obj["doc"], 0))
 
-    if "doc" in obj:
-        lines.append(rst_subtitle("Summary"))
-        lines.append(rst_paragraph(obj["doc"], 0))
+        # Operations
+        if "operations" in obj:
+            lines.append(self.fmt.rst_subtitle("Operations"))
+            lines.append(self.parse_operations(obj["operations"]["list"], family))
 
-    # Operations
-    if "operations" in obj:
-        lines.append(rst_subtitle("Operations"))
-        lines.append(parse_operations(obj["operations"]["list"], family))
+        # Multicast groups
+        if "mcast-groups" in obj:
+            lines.append(self.fmt.rst_subtitle("Multicast groups"))
+            lines.append(self.parse_mcast_group(obj["mcast-groups"]["list"]))
 
-    # Multicast groups
-    if "mcast-groups" in obj:
-        lines.append(rst_subtitle("Multicast groups"))
-        lines.append(parse_mcast_group(obj["mcast-groups"]["list"]))
+        # Definitions
+        if "definitions" in obj:
+            lines.append(self.fmt.rst_subtitle("Definitions"))
+            lines.append(self.parse_definitions(obj["definitions"], family))
 
-    # Definitions
-    if "definitions" in obj:
-        lines.append(rst_subtitle("Definitions"))
-        lines.append(parse_definitions(obj["definitions"], family))
+        # Attributes set
+        if "attribute-sets" in obj:
+            lines.append(self.fmt.rst_subtitle("Attribute sets"))
+            lines.append(self.parse_attr_sets(obj["attribute-sets"], family))
 
-    # Attributes set
-    if "attribute-sets" in obj:
-        lines.append(rst_subtitle("Attribute sets"))
-        lines.append(parse_attr_sets(obj["attribute-sets"], family))
+        # Sub-messages
+        if "sub-messages" in obj:
+            lines.append(self.fmt.rst_subtitle("Sub-messages"))
+            lines.append(self.parse_sub_messages(obj["sub-messages"], family))
 
-    # Sub-messages
-    if "sub-messages" in obj:
-        lines.append(rst_subtitle("Sub-messages"))
-        lines.append(parse_sub_messages(obj["sub-messages"], family))
+        return "\n".join(lines)
 
-    return "\n".join(lines)
 
+    # Main functions
+    # ==============
 
-# Main functions
-# ==============
 
+    def parse_yaml_file(self, filename: str) -> str:
+        """Transform the YAML specified by filename into an RST-formatted string"""
+        with open(filename, "r", encoding="utf-8") as spec_file:
+            yaml_data = yaml.safe_load(spec_file)
+            content = self.parse_yaml(yaml_data)
 
-def parse_yaml_file(filename: str) -> str:
-    """Transform the YAML specified by filename into an RST-formatted string"""
-    with open(filename, "r", encoding="utf-8") as spec_file:
-        yaml_data = yaml.safe_load(spec_file)
-        content = parse_yaml(yaml_data)
+        return content
 
-    return content
 
+    def generate_main_index_rst(self, output: str, index_dir: str) -> None:
+        """Generate the `networking_spec/index` content and write to the file"""
+        lines = []
 
-def generate_main_index_rst(output: str, index_dir: str) -> str:
-    """Generate the `networking_spec/index` content and write to the file"""
-    lines = []
+        lines.append(self.fmt.rst_header())
+        lines.append(self.fmt.rst_label("specs"))
+        lines.append(self.fmt.rst_title("Netlink Family Specifications"))
+        lines.append(self.fmt.rst_toctree(1))
 
-    lines.append(rst_header())
-    lines.append(rst_label("specs"))
-    lines.append(rst_title("Netlink Family Specifications"))
-    lines.append(rst_toctree(1))
+        index_fname = os.path.basename(output)
+        base, ext = os.path.splitext(index_fname)
 
-    index_fname = os.path.basename(output)
-    base, ext = os.path.splitext(index_fname)
+        if not index_dir:
+            index_dir = os.path.dirname(output)
 
-    if not index_dir:
-        index_dir = os.path.dirname(output)
+        logging.debug(f"Looking for {ext} files in %s", index_dir)
+        for filename in sorted(os.listdir(index_dir)):
+            if not filename.endswith(ext) or filename == index_fname:
+                continue
+            base, ext = os.path.splitext(filename)
+            lines.append(f"   {base}\n")
 
-    logging.debug(f"Looking for {ext} files in %s", index_dir)
-    for filename in sorted(os.listdir(index_dir)):
-        if not filename.endswith(ext) or filename == index_fname:
-            continue
-        base, ext = os.path.splitext(filename)
-        lines.append(f"   {base}\n")
+        logging.debug("Writing an index file at %s", output)
 
-    return "".join(lines), output
+        return "".join(lines)
diff --git a/tools/net/ynl/pyynl/ynl_gen_rst.py b/tools/net/ynl/pyynl/ynl_gen_rst.py
index 38dafe3d9179..257288f707af 100755
--- a/tools/net/ynl/pyynl/ynl_gen_rst.py
+++ b/tools/net/ynl/pyynl/ynl_gen_rst.py
@@ -10,12 +10,7 @@
 
     This script performs extensive parsing to the Linux kernel's netlink YAML
     spec files, in an effort to avoid needing to heavily mark up the original
-    YAML file.
-
-    This code is split in three big parts:
-        1) RST formatters: Use to convert a string to a RST output
-        2) Parser helpers: Functions to parse the YAML data structure
-        3) Main function and small helpers
+    YAML file. It uses the library code from scripts/lib.
 """
 
 import os.path
@@ -28,7 +23,7 @@ SRC_DIR = os.path.dirname(os.path.realpath(__file__))
 
 sys.path.insert(0, os.path.join(SRC_DIR, LIB_DIR))
 
-from netlink_yml_parser import parse_yaml_file, generate_main_index_rst
+from netlink_yml_parser import NetlinkYamlParser
 
 
 def parse_arguments() -> argparse.Namespace:
@@ -76,10 +71,10 @@ def write_to_rstfile(content: str, filename: str) -> None:
         rst_file.write(content)
 
 
-def write_index_rst(output: str, index_dir: str) -> None:
+def write_index_rst(parser: NetlinkYamlParser, output: str, index_dir: str) -> None:
     """Generate the `networking_spec/index` content and write to the file"""
 
-    msg = generate_main_index_rst(output, index_dir)
+    msg = parser.generate_main_index_rst(output, index_dir)
 
     logging.debug("Writing an index file at %s", output)
     write_to_rstfile(msg, output)
@@ -90,10 +85,12 @@ def main() -> None:
 
     args = parse_arguments()
 
+    parser = NetlinkYamlParser()
+
     if args.input:
         logging.debug("Parsing %s", args.input)
         try:
-            content = parse_yaml_file(os.path.join(args.input))
+            content = parser.parse_yaml_file(os.path.join(args.input))
         except Exception as exception:
             logging.warning("Failed to parse %s.", args.input)
             logging.warning(exception)
@@ -103,7 +100,7 @@ def main() -> None:
 
     if args.index:
         # Generate the index RST file
-        write_index_rst(args.output, args.input_dir)
+        write_index_rst(parser, args.output, args.input_dir)
 
 
 if __name__ == "__main__":
-- 
2.49.0

[PATCH v3 07/16] tools: ynl_gen_rst.py: do some coding style cleanups

[Mauro Carvalho Chehab]

Do some coding style cleanups to make pylint and flake8 happier.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
---
 scripts/lib/netlink_yml_parser.py  | 74 +++++++++++-------------------
 tools/net/ynl/pyynl/ynl_gen_rst.py |  2 +-
 2 files changed, 28 insertions(+), 48 deletions(-)

diff --git a/scripts/lib/netlink_yml_parser.py b/scripts/lib/netlink_yml_parser.py
index 8d7961a1a256..65981b86875f 100755
--- a/scripts/lib/netlink_yml_parser.py
+++ b/scripts/lib/netlink_yml_parser.py
@@ -19,16 +19,13 @@
 
 from typing import Any, Dict, List
 import os.path
-import sys
-import argparse
 import logging
 import yaml
 
 
-# ==============
-# RST Formatters
-# ==============
 class RstFormatters:
+    """RST Formatters"""
+
     SPACE_PER_LEVEL = 4
 
     @staticmethod
@@ -36,81 +33,67 @@ class RstFormatters:
         """Return space to format"""
         return " " * (level * RstFormatters.SPACE_PER_LEVEL)
 
-
     @staticmethod
     def bold(text: str) -> str:
         """Format bold text"""
         return f"**{text}**"
 
-
     @staticmethod
     def inline(text: str) -> str:
         """Format inline text"""
         return f"``{text}``"
 
-
     @staticmethod
     def sanitize(text: str) -> str:
         """Remove newlines and multiple spaces"""
         # This is useful for some fields that are spread across multiple lines
         return str(text).replace("\n", " ").strip()
 
-
     def rst_fields(self, key: str, value: str, level: int = 0) -> str:
         """Return a RST formatted field"""
         return self.headroom(level) + f":{key}: {value}"
 
-
     def rst_definition(self, key: str, value: Any, level: int = 0) -> str:
         """Format a single rst definition"""
         return self.headroom(level) + key + "\n" + self.headroom(level + 1) + str(value)
 
-
     def rst_paragraph(self, paragraph: str, level: int = 0) -> str:
         """Return a formatted paragraph"""
         return self.headroom(level) + paragraph
 
-
     def rst_bullet(self, item: str, level: int = 0) -> str:
         """Return a formatted a bullet"""
         return self.headroom(level) + f"- {item}"
 
-
     @staticmethod
     def rst_subsection(title: str) -> str:
         """Add a sub-section to the document"""
         return f"{title}\n" + "-" * len(title)
 
-
     @staticmethod
     def rst_subsubsection(title: str) -> str:
         """Add a sub-sub-section to the document"""
         return f"{title}\n" + "~" * len(title)
 
-
     @staticmethod
     def rst_section(namespace: str, prefix: str, title: str) -> str:
         """Add a section to the document"""
         return f".. _{namespace}-{prefix}-{title}:\n\n{title}\n" + "=" * len(title)
 
-
     @staticmethod
     def rst_subtitle(title: str) -> str:
         """Add a subtitle to the document"""
         return "\n" + "-" * len(title) + f"\n{title}\n" + "-" * len(title) + "\n\n"
 
-
     @staticmethod
     def rst_title(title: str) -> str:
         """Add a title to the document"""
         return "=" * len(title) + f"\n{title}\n" + "=" * len(title) + "\n\n"
 
-
     def rst_list_inline(self, list_: List[str], level: int = 0) -> str:
         """Format a list using inlines"""
         return self.headroom(level) + "[" + ", ".join(self.inline(i) for i in list_) + "]"
 
-
     @staticmethod
     def rst_ref(namespace: str, prefix: str, name: str) -> str:
         """Add a hyperlink to the document"""
@@ -119,10 +102,9 @@ class RstFormatters:
                     'nested-attributes': 'attribute-set',
                     'struct': 'definition'}
         if prefix in mappings:
-            prefix = mappings[prefix]
+            prefix = mappings.get(prefix, "")
         return f":ref:`{namespace}-{prefix}-{name}`"
 
-
     def rst_header(self) -> str:
         """The headers for all the auto generated RST files"""
         lines = []
@@ -132,7 +114,6 @@ class RstFormatters:
 
         return "\n".join(lines)
 
-
     @staticmethod
     def rst_toctree(maxdepth: int = 2) -> str:
         """Generate a toctree RST primitive"""
@@ -143,16 +124,14 @@ class RstFormatters:
 
         return "\n".join(lines)
 
-
     @staticmethod
     def rst_label(title: str) -> str:
         """Return a formatted label"""
         return f".. _{title}:\n\n"
 
-# =======
-# Parsers
-# =======
+
 class NetlinkYamlParser:
+    """YAML Netlink specs Parser"""
 
     fmt = RstFormatters()
 
@@ -164,7 +143,6 @@ class NetlinkYamlParser:
 
         return "\n".join(lines)
 
-
     def parse_do(self, do_dict: Dict[str, Any], level: int = 0) -> str:
         """Parse 'do' section and return a formatted string"""
         lines = []
@@ -177,16 +155,16 @@ class NetlinkYamlParser:
 
         return "\n".join(lines)
 
-
     def parse_do_attributes(self, attrs: Dict[str, Any], level: int = 0) -> str:
         """Parse 'attributes' section"""
         if "attributes" not in attrs:
             return ""
-        lines = [self.fmt.rst_fields("attributes", self.fmt.rst_list_inline(attrs["attributes"]), level + 1)]
+        lines = [self.fmt.rst_fields("attributes",
+                                     self.fmt.rst_list_inline(attrs["attributes"]),
+                                     level + 1)]
 
         return "\n".join(lines)
 
-
     def parse_operations(self, operations: List[Dict[str, Any]], namespace: str) -> str:
         """Parse operations block"""
         preprocessed = ["name", "doc", "title", "do", "dump", "flags"]
@@ -194,7 +172,8 @@ class NetlinkYamlParser:
         lines = []
 
         for operation in operations:
-            lines.append(self.fmt.rst_section(namespace, 'operation', operation["name"]))
+            lines.append(self.fmt.rst_section(namespace, 'operation',
+                                              operation["name"]))
             lines.append(self.fmt.rst_paragraph(operation["doc"]) + "\n")
 
             for key in operation.keys():
@@ -206,7 +185,8 @@ class NetlinkYamlParser:
                     value = self.fmt.rst_ref(namespace, key, value)
                 lines.append(self.fmt.rst_fields(key, value, 0))
             if 'flags' in operation:
-                lines.append(self.fmt.rst_fields('flags', self.fmt.rst_list_inline(operation['flags'])))
+                lines.append(self.fmt.rst_fields('flags',
+                                                 self.fmt.rst_list_inline(operation['flags'])))
 
             if "do" in operation:
                 lines.append(self.fmt.rst_paragraph(":do:", 0))
@@ -220,7 +200,6 @@ class NetlinkYamlParser:
 
         return "\n".join(lines)
 
-
     def parse_entries(self, entries: List[Dict[str, Any]], level: int) -> str:
         """Parse a list of entries"""
         ignored = ["pad"]
@@ -235,17 +214,19 @@ class NetlinkYamlParser:
                 if type_:
                     field_name += f" ({self.fmt.inline(type_)})"
                 lines.append(
-                    self.fmt.rst_fields(field_name, self.fmt.sanitize(entry.get("doc", "")), level)
+                    self.fmt.rst_fields(field_name,
+                                        self.fmt.sanitize(entry.get("doc", "")),
+                                        level)
                 )
             elif isinstance(entry, list):
                 lines.append(self.fmt.rst_list_inline(entry, level))
             else:
-                lines.append(self.fmt.rst_bullet(self.fmt.inline(self.fmt.sanitize(entry)), level))
+                lines.append(self.fmt.rst_bullet(self.fmt.inline(self.fmt.sanitize(entry)),
+                                                 level))
 
         lines.append("\n")
         return "\n".join(lines)
 
-
     def parse_definitions(self, defs: Dict[str, Any], namespace: str) -> str:
         """Parse definitions section"""
         preprocessed = ["name", "entries", "members"]
@@ -270,7 +251,6 @@ class NetlinkYamlParser:
 
         return "\n".join(lines)
 
-
     def parse_attr_sets(self, entries: List[Dict[str, Any]], namespace: str) -> str:
         """Parse attribute from attribute-set"""
         preprocessed = ["name", "type"]
@@ -279,7 +259,8 @@ class NetlinkYamlParser:
         lines = []
 
         for entry in entries:
-            lines.append(self.fmt.rst_section(namespace, 'attribute-set', entry["name"]))
+            lines.append(self.fmt.rst_section(namespace, 'attribute-set',
+                                              entry["name"]))
             for attr in entry["attributes"]:
                 type_ = attr.get("type")
                 attr_line = attr["name"]
@@ -301,13 +282,13 @@ class NetlinkYamlParser:
 
         return "\n".join(lines)
 
-
     def parse_sub_messages(self, entries: List[Dict[str, Any]], namespace: str) -> str:
         """Parse sub-message definitions"""
         lines = []
 
         for entry in entries:
-            lines.append(self.fmt.rst_section(namespace, 'sub-message', entry["name"]))
+            lines.append(self.fmt.rst_section(namespace, 'sub-message',
+                                              entry["name"]))
             for fmt in entry["formats"]:
                 value = fmt["value"]
 
@@ -315,13 +296,14 @@ class NetlinkYamlParser:
                 for attr in ['fixed-header', 'attribute-set']:
                     if attr in fmt:
                         lines.append(self.fmt.rst_fields(attr,
-                                                self.fmt.rst_ref(namespace, attr, fmt[attr]),
-                                                1))
+                                                         self.fmt.rst_ref(namespace,
+                                                                          attr,
+                                                                          fmt[attr]),
+                                                         1))
                 lines.append("\n")
 
         return "\n".join(lines)
 
-
     def parse_yaml(self, obj: Dict[str, Any]) -> str:
         """Format the whole YAML into a RST string"""
         lines = []
@@ -344,7 +326,8 @@ class NetlinkYamlParser:
         # Operations
         if "operations" in obj:
             lines.append(self.fmt.rst_subtitle("Operations"))
-            lines.append(self.parse_operations(obj["operations"]["list"], family))
+            lines.append(self.parse_operations(obj["operations"]["list"],
+                                               family))
 
         # Multicast groups
         if "mcast-groups" in obj:
@@ -368,11 +351,9 @@ class NetlinkYamlParser:
 
         return "\n".join(lines)
 
-
     # Main functions
     # ==============
 
-
     def parse_yaml_file(self, filename: str) -> str:
         """Transform the YAML specified by filename into an RST-formatted string"""
         with open(filename, "r", encoding="utf-8") as spec_file:
@@ -381,7 +362,6 @@ class NetlinkYamlParser:
 
         return content
 
-
     def generate_main_index_rst(self, output: str, index_dir: str) -> None:
         """Generate the `networking_spec/index` content and write to the file"""
         lines = []
diff --git a/tools/net/ynl/pyynl/ynl_gen_rst.py b/tools/net/ynl/pyynl/ynl_gen_rst.py
index 257288f707af..317093623dab 100755
--- a/tools/net/ynl/pyynl/ynl_gen_rst.py
+++ b/tools/net/ynl/pyynl/ynl_gen_rst.py
@@ -23,7 +23,7 @@ SRC_DIR = os.path.dirname(os.path.realpath(__file__))
 
 sys.path.insert(0, os.path.join(SRC_DIR, LIB_DIR))
 
-from netlink_yml_parser import NetlinkYamlParser
+from netlink_yml_parser import NetlinkYamlParser      # pylint: disable=C0413
 
 
 def parse_arguments() -> argparse.Namespace:
-- 
2.49.0

[PATCH v3 08/16] scripts: netlink_yml_parser.py: improve index.rst generation

[Mauro Carvalho Chehab]

Handle both .yaml and .rst extensions. This way, one can generate
an index file inside the sources with:

	tools/net/ynl/pyynl/ynl_gen_rst.py -x  -v -o Documentation/netlink/specs/index.rst

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
---
 scripts/lib/netlink_yml_parser.py | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/scripts/lib/netlink_yml_parser.py b/scripts/lib/netlink_yml_parser.py
index 65981b86875f..3ba28a9a4338 100755
--- a/scripts/lib/netlink_yml_parser.py
+++ b/scripts/lib/netlink_yml_parser.py
@@ -372,15 +372,20 @@ class NetlinkYamlParser:
         lines.append(self.fmt.rst_toctree(1))
 
         index_fname = os.path.basename(output)
-        base, ext = os.path.splitext(index_fname)
 
         if not index_dir:
             index_dir = os.path.dirname(output)
 
-        logging.debug(f"Looking for {ext} files in %s", index_dir)
+        exts = [ ".yaml", ".rst" ]
+
+        logging.debug(f"Looking for files in %s", index_dir)
         for filename in sorted(os.listdir(index_dir)):
-            if not filename.endswith(ext) or filename == index_fname:
+            if filename == index_fname:
                 continue
+
+            for ext in exts:
+                if not filename.endswith(ext):
+                    continue
             base, ext = os.path.splitext(filename)
             lines.append(f"   {base}\n")
 
-- 
2.49.0

[PATCH v3 09/16] docs: sphinx: add a parser template for yaml files

[Mauro Carvalho Chehab]

Add a simple sphinx.Parser class meant to handle yaml files.

For now, it just replaces a yaml file by a simple ReST
code. I opted to do this way, as this patch can be used as
basis for new file format parsers. We may use this as an
example to parse other types of files.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
---
 Documentation/sphinx/parser_yaml.py | 63 +++++++++++++++++++++++++++++
 1 file changed, 63 insertions(+)
 create mode 100755 Documentation/sphinx/parser_yaml.py

diff --git a/Documentation/sphinx/parser_yaml.py b/Documentation/sphinx/parser_yaml.py
new file mode 100755
index 000000000000..b3cde9cf7aac
--- /dev/null
+++ b/Documentation/sphinx/parser_yaml.py
@@ -0,0 +1,63 @@
+"""
+Sphinx extension for processing YAML files
+"""
+
+import os
+
+from docutils.parsers.rst import Parser as RSTParser
+from docutils.statemachine import ViewList
+
+from sphinx.util import logging
+from sphinx.parsers import Parser
+
+from pprint import pformat
+
+logger = logging.getLogger(__name__)
+
+class YamlParser(Parser):
+    """Custom parser for YAML files."""
+
+    supported = ('yaml', 'yml')
+
+    # Overrides docutils.parsers.Parser. See sphinx.parsers.RSTParser
+    def parse(self, inputstring, document):
+        """Parse YAML and generate a document tree."""
+
+        self.setup_parse(inputstring, document)
+
+        result = ViewList()
+
+        try:
+            # FIXME: Test logic to generate some ReST content
+            basename = os.path.basename(document.current_source)
+            title = os.path.splitext(basename)[0].replace('_', ' ').title()
+
+            msg = f"{title}\n"
+            msg += "=" * len(title) + "\n\n"
+            msg += "Something\n"
+
+            # Parse message with RSTParser
+            for i, line in enumerate(msg.split('\n')):
+                result.append(line, document.current_source, i)
+
+            rst_parser = RSTParser()
+            rst_parser.parse('\n'.join(result), document)
+
+        except Exception as e:
+            document.reporter.error("YAML parsing error: %s" % pformat(e))
+
+        self.finish_parse()
+
+def setup(app):
+    """Setup function for the Sphinx extension."""
+
+    # Add YAML parser
+    app.add_source_parser(YamlParser)
+    app.add_source_suffix('.yaml', 'yaml')
+    app.add_source_suffix('.yml', 'yaml')
+
+    return {
+        'version': '1.0',
+        'parallel_read_safe': True,
+        'parallel_write_safe': True,
+    }
-- 
2.49.0

[PATCH v3 10/16] docs: sphinx: parser_yaml.py: add Netlink specs parser

[Mauro Carvalho Chehab]

Place the code at parser_yaml.py to handle Netlink specs. All
other yaml files are ignored.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
---
 .pylintrc                           |  2 +-
 Documentation/sphinx/parser_yaml.py | 39 +++++++++++++++++++++--------
 2 files changed, 29 insertions(+), 12 deletions(-)

diff --git a/.pylintrc b/.pylintrc
index 30b8ae1659f8..f1d21379254b 100644
--- a/.pylintrc
+++ b/.pylintrc
@@ -1,2 +1,2 @@
 [MASTER]
-init-hook='import sys; sys.path += ["scripts/lib/kdoc", "scripts/lib/abi"]'
+init-hook='import sys; sys.path += ["scripts/lib", "scripts/lib/kdoc", "scripts/lib/abi"]'
diff --git a/Documentation/sphinx/parser_yaml.py b/Documentation/sphinx/parser_yaml.py
index b3cde9cf7aac..eb32e3249274 100755
--- a/Documentation/sphinx/parser_yaml.py
+++ b/Documentation/sphinx/parser_yaml.py
@@ -3,6 +3,10 @@ Sphinx extension for processing YAML files
 """
 
 import os
+import re
+import sys
+
+from pprint import pformat
 
 from docutils.parsers.rst import Parser as RSTParser
 from docutils.statemachine import ViewList
@@ -10,7 +14,10 @@ from docutils.statemachine import ViewList
 from sphinx.util import logging
 from sphinx.parsers import Parser
 
-from pprint import pformat
+srctree = os.path.abspath(os.environ["srctree"])
+sys.path.insert(0, os.path.join(srctree, "scripts/lib"))
+
+from netlink_yml_parser import NetlinkYamlParser      # pylint: disable=C0413
 
 logger = logging.getLogger(__name__)
 
@@ -19,8 +26,9 @@ class YamlParser(Parser):
 
     supported = ('yaml', 'yml')
 
-    # Overrides docutils.parsers.Parser. See sphinx.parsers.RSTParser
-    def parse(self, inputstring, document):
+    netlink_parser = NetlinkYamlParser()
+
+    def do_parse(self, inputstring, document, msg):
         """Parse YAML and generate a document tree."""
 
         self.setup_parse(inputstring, document)
@@ -28,14 +36,6 @@ class YamlParser(Parser):
         result = ViewList()
 
         try:
-            # FIXME: Test logic to generate some ReST content
-            basename = os.path.basename(document.current_source)
-            title = os.path.splitext(basename)[0].replace('_', ' ').title()
-
-            msg = f"{title}\n"
-            msg += "=" * len(title) + "\n\n"
-            msg += "Something\n"
-
             # Parse message with RSTParser
             for i, line in enumerate(msg.split('\n')):
                 result.append(line, document.current_source, i)
@@ -48,6 +48,23 @@ class YamlParser(Parser):
 
         self.finish_parse()
 
+    # Overrides docutils.parsers.Parser. See sphinx.parsers.RSTParser
+    def parse(self, inputstring, document):
+        """Check if a YAML is meant to be parsed."""
+
+        fname = document.current_source
+
+        # Handle netlink yaml specs
+        if re.search("/netlink/specs/", fname):
+            if fname.endswith("index.yaml"):
+                msg = self.netlink_parser.generate_main_index_rst(fname, None)
+            else:
+                msg = self.netlink_parser.parse_yaml_file(fname)
+
+            self.do_parse(inputstring, document, msg)
+
+        # All other yaml files are ignored
+
 def setup(app):
     """Setup function for the Sphinx extension."""
 
-- 
2.49.0

[PATCH v3 11/16] docs: use parser_yaml extension to handle Netlink specs

[Mauro Carvalho Chehab]

Instead of manually calling ynl_gen_rst.py, use a Sphinx extension.
This way, no .rst files would be written to the Kernel source
directories.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
---
 Documentation/Makefile                        | 17 ---------
 Documentation/conf.py                         | 11 +++---
 Documentation/netlink/specs/index.rst         | 38 +++++++++++++++++++
 Documentation/networking/index.rst            |  2 +-
 .../networking/netlink_spec/readme.txt        |  4 --
 Documentation/sphinx/parser_yaml.py           |  2 +-
 6 files changed, 46 insertions(+), 28 deletions(-)
 create mode 100644 Documentation/netlink/specs/index.rst
 delete mode 100644 Documentation/networking/netlink_spec/readme.txt

diff --git a/Documentation/Makefile b/Documentation/Makefile
index d30d66ddf1ad..9185680b1e86 100644
--- a/Documentation/Makefile
+++ b/Documentation/Makefile
@@ -102,22 +102,6 @@ quiet_cmd_sphinx = SPHINX  $@ --> file://$(abspath $(BUILDDIR)/$3/$4)
 		cp $(if $(patsubst /%,,$(DOCS_CSS)),$(abspath $(srctree)/$(DOCS_CSS)),$(DOCS_CSS)) $(BUILDDIR)/$3/_static/; \
 	fi
 
-YNL_INDEX:=$(srctree)/Documentation/networking/netlink_spec/index.rst
-YNL_RST_DIR:=$(srctree)/Documentation/networking/netlink_spec
-YNL_YAML_DIR:=$(srctree)/Documentation/netlink/specs
-YNL_TOOL:=$(srctree)/tools/net/ynl/pyynl/ynl_gen_rst.py
-
-YNL_RST_FILES_TMP := $(patsubst %.yaml,%.rst,$(wildcard $(YNL_YAML_DIR)/*.yaml))
-YNL_RST_FILES := $(patsubst $(YNL_YAML_DIR)%,$(YNL_RST_DIR)%, $(YNL_RST_FILES_TMP))
-
-$(YNL_INDEX): $(YNL_RST_FILES)
-	$(Q)$(YNL_TOOL) -o $@ -x
-
-$(YNL_RST_DIR)/%.rst: $(YNL_YAML_DIR)/%.yaml $(YNL_TOOL)
-	$(Q)$(YNL_TOOL) -i $< -o $@
-
-htmldocs texinfodocs latexdocs epubdocs xmldocs: $(YNL_INDEX)
-
 htmldocs:
 	@$(srctree)/scripts/sphinx-pre-install --version-check
 	@+$(foreach var,$(SPHINXDIRS),$(call loop_cmd,sphinx,html,$(var),,$(var)))
@@ -184,7 +168,6 @@ refcheckdocs:
 	$(Q)cd $(srctree);scripts/documentation-file-ref-check
 
 cleandocs:
-	$(Q)rm -f $(YNL_INDEX) $(YNL_RST_FILES)
 	$(Q)rm -rf $(BUILDDIR)
 	$(Q)$(MAKE) BUILDDIR=$(abspath $(BUILDDIR)) $(build)=Documentation/userspace-api/media clean
 
diff --git a/Documentation/conf.py b/Documentation/conf.py
index 12de52a2b17e..add6ce78dd80 100644
--- a/Documentation/conf.py
+++ b/Documentation/conf.py
@@ -45,7 +45,7 @@ needs_sphinx = '3.4.3'
 extensions = ['kerneldoc', 'rstFlatTable', 'kernel_include',
               'kfigure', 'sphinx.ext.ifconfig', 'automarkup',
               'maintainers_include', 'sphinx.ext.autosectionlabel',
-              'kernel_abi', 'kernel_feat', 'translations']
+              'kernel_abi', 'kernel_feat', 'translations', 'parser_yaml']
 
 # Since Sphinx version 3, the C function parser is more pedantic with regards
 # to type checking. Due to that, having macros at c:function cause problems.
@@ -143,10 +143,11 @@ else:
 # Add any paths that contain templates here, relative to this directory.
 templates_path = ['sphinx/templates']
 
-# The suffix(es) of source filenames.
-# You can specify multiple suffix as a list of string:
-# source_suffix = ['.rst', '.md']
-source_suffix = '.rst'
+# The suffixes of source filenames that will be automatically parsed
+source_suffix = {
+        '.rst': 'restructuredtext',
+        '.yaml': 'yaml',
+}
 
 # The encoding of source files.
 #source_encoding = 'utf-8-sig'
diff --git a/Documentation/netlink/specs/index.rst b/Documentation/netlink/specs/index.rst
new file mode 100644
index 000000000000..ca0bf816dc3f
--- /dev/null
+++ b/Documentation/netlink/specs/index.rst
@@ -0,0 +1,38 @@
+.. SPDX-License-Identifier: GPL-2.0
+.. NOTE: This document was auto-generated.
+
+.. _specs:
+
+=============================
+Netlink Family Specifications
+=============================
+
+.. toctree::
+   :maxdepth: 1
+
+   conntrack
+   devlink
+   dpll
+   ethtool
+   fou
+   handshake
+   lockd
+   mptcp_pm
+   net_shaper
+   netdev
+   nfsd
+   nftables
+   nl80211
+   nlctrl
+   ovpn
+   ovs_datapath
+   ovs_flow
+   ovs_vport
+   rt-addr
+   rt-link
+   rt-neigh
+   rt-route
+   rt-rule
+   tc
+   tcp_metrics
+   team
diff --git a/Documentation/networking/index.rst b/Documentation/networking/index.rst
index ac90b82f3ce9..b7a4969e9bc9 100644
--- a/Documentation/networking/index.rst
+++ b/Documentation/networking/index.rst
@@ -57,7 +57,7 @@ Contents:
    filter
    generic-hdlc
    generic_netlink
-   netlink_spec/index
+   ../netlink/specs/index
    gen_stats
    gtp
    ila
diff --git a/Documentation/networking/netlink_spec/readme.txt b/Documentation/networking/netlink_spec/readme.txt
deleted file mode 100644
index 030b44aca4e6..000000000000
--- a/Documentation/networking/netlink_spec/readme.txt
+++ /dev/null
@@ -1,4 +0,0 @@
-SPDX-License-Identifier: GPL-2.0
-
-This file is populated during the build of the documentation (htmldocs) by the
-tools/net/ynl/pyynl/ynl_gen_rst.py script.
diff --git a/Documentation/sphinx/parser_yaml.py b/Documentation/sphinx/parser_yaml.py
index eb32e3249274..cdcafe5b3937 100755
--- a/Documentation/sphinx/parser_yaml.py
+++ b/Documentation/sphinx/parser_yaml.py
@@ -55,7 +55,7 @@ class YamlParser(Parser):
         fname = document.current_source
 
         # Handle netlink yaml specs
-        if re.search("/netlink/specs/", fname):
+        if re.search("netlink/specs/", fname):
             if fname.endswith("index.yaml"):
                 msg = self.netlink_parser.generate_main_index_rst(fname, None)
             else:
-- 
2.49.0

[PATCH v3 12/16] docs: conf.py: don't handle yaml files outside Netlink specs

[Mauro Carvalho Chehab]

The parser_yaml extension already has a logic to prevent
handing all yaml documents. However, if we don't also exclude
the patterns at conf.py, the build time would increase a lot,
and warnings like those would be generated:

    Documentation/netlink/genetlink.yaml: WARNING: o documento não está incluído em nenhum toctree
    Documentation/netlink/genetlink-c.yaml: WARNING: o documento não está incluído em nenhum toctree
    Documentation/netlink/genetlink-legacy.yaml: WARNING: o documento não está incluído em nenhum toctree
    Documentation/netlink/index.rst: WARNING: o documento não está incluído em nenhum toctree
    Documentation/netlink/netlink-raw.yaml: WARNING: o documento não está incluído em nenhum toctree

Add some exclusion rules to prevent that.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
---
 Documentation/conf.py | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/Documentation/conf.py b/Documentation/conf.py
index add6ce78dd80..b8668bcaf090 100644
--- a/Documentation/conf.py
+++ b/Documentation/conf.py
@@ -222,7 +222,11 @@ language = 'en'
 
 # List of patterns, relative to source directory, that match files and
 # directories to ignore when looking for source files.
-exclude_patterns = ['output']
+exclude_patterns = [
+	'output',
+	'devicetree/bindings/**.yaml',
+	'netlink/*.yaml',
+]
 
 # The reST default role (used for this markup: `text`) to use for all
 # documents.
-- 
2.49.0

[PATCH v3 13/16] docs: conf.py: add include_pattern to speedup

[Mauro Carvalho Chehab]

Now that we have a parser for yaml, use include_pattern, adding
just yaml files from the only directory we currently process.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
---
 Documentation/conf.py | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/Documentation/conf.py b/Documentation/conf.py
index b8668bcaf090..60e6998e49e1 100644
--- a/Documentation/conf.py
+++ b/Documentation/conf.py
@@ -222,10 +222,13 @@ language = 'en'
 
 # List of patterns, relative to source directory, that match files and
 # directories to ignore when looking for source files.
+include_patterns = [
+	'**.rst',
+	'netlink/specs/*.yaml',
+]
+
 exclude_patterns = [
 	'output',
-	'devicetree/bindings/**.yaml',
-	'netlink/*.yaml',
 ]
 
 # The reST default role (used for this markup: `text`) to use for all
-- 
2.49.0

[PATCH v3 14/16] docs: uapi: netlink: update netlink specs link

[Mauro Carvalho Chehab]

With the recent parser_yaml extension, and the removal of the
auto-generated ReST source files, the location of netlink
specs changed.

Update uAPI accordingly.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
---
 Documentation/userspace-api/netlink/index.rst | 2 +-
 Documentation/userspace-api/netlink/specs.rst | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/Documentation/userspace-api/netlink/index.rst b/Documentation/userspace-api/netlink/index.rst
index c1b6765cc963..83ae25066591 100644
--- a/Documentation/userspace-api/netlink/index.rst
+++ b/Documentation/userspace-api/netlink/index.rst
@@ -18,4 +18,4 @@ Netlink documentation for users.
 
 See also:
  - :ref:`Documentation/core-api/netlink.rst <kernel_netlink>`
- - :ref:`Documentation/networking/netlink_spec/index.rst <specs>`
+ - :ref:`Documentation/netlink/specs/index.rst <specs>`
diff --git a/Documentation/userspace-api/netlink/specs.rst b/Documentation/userspace-api/netlink/specs.rst
index 1b50d97d8d7c..debb4bfca5c4 100644
--- a/Documentation/userspace-api/netlink/specs.rst
+++ b/Documentation/userspace-api/netlink/specs.rst
@@ -15,7 +15,7 @@ kernel headers directly.
 Internally kernel uses the YAML specs to generate:
 
  - the C uAPI header
- - documentation of the protocol as a ReST file - see :ref:`Documentation/networking/netlink_spec/index.rst <specs>`
+ - documentation of the protocol as a ReST file - see :ref:`Documentation/netlink/specs/index.rst <specs>`
  - policy tables for input attribute validation
  - operation tables
 
-- 
2.49.0

[PATCH v3 15/16] MAINTAINERS: add maintainers for netlink_yml_parser.py

[Mauro Carvalho Chehab]

The parsing code from tools/net/ynl/pyynl/ynl_gen_rst.py was moved
to scripts/lib/netlink_yml_parser.py. Its maintainership
is done by Netlink maintainers. Yet, as it is used by Sphinx
build system, add it also to linux-doc maintainers, as changes
there might affect documentation builds. So, linux-docs ML
should ideally be C/C on changes to it.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
---
 MAINTAINERS | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/MAINTAINERS b/MAINTAINERS
index a92290fffa16..2c0b13e5d8fc 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -7202,6 +7202,7 @@ F:	scripts/get_abi.py
 F:	scripts/kernel-doc*
 F:	scripts/lib/abi/*
 F:	scripts/lib/kdoc/*
+F:	scripts/lib/netlink_yml_parser.py
 F:	scripts/sphinx-pre-install
 X:	Documentation/ABI/
 X:	Documentation/admin-guide/media/
@@ -27314,6 +27315,7 @@ M:	Jakub Kicinski <kuba@kernel.org>
 F:	Documentation/netlink/
 F:	Documentation/userspace-api/netlink/intro-specs.rst
 F:	Documentation/userspace-api/netlink/specs.rst
+F:	scripts/lib/netlink_yml_parser.py
 F:	tools/net/ynl/
 
 YEALINK PHONE DRIVER
-- 
2.49.0

[PATCH v3 16/16] docs: Makefile: disable check rules on make cleandocs

[Mauro Carvalho Chehab]

It doesn't make sense to check for missing ABI and documents
when cleaning the tree.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
---
 Documentation/Makefile | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Documentation/Makefile b/Documentation/Makefile
index 9185680b1e86..820f07e0afe6 100644
--- a/Documentation/Makefile
+++ b/Documentation/Makefile
@@ -5,6 +5,7 @@
 # for cleaning
 subdir- := devicetree/bindings
 
+ifneq ($(MAKECMDGOALS),cleandocs)
 # Check for broken documentation file references
 ifeq ($(CONFIG_WARN_MISSING_DOCUMENTS),y)
 $(shell $(srctree)/scripts/documentation-file-ref-check --warn)
@@ -14,6 +15,7 @@ endif
 ifeq ($(CONFIG_WARN_ABI_ERRORS),y)
 $(shell $(srctree)/scripts/get_abi.py --dir $(srctree)/Documentation/ABI validate)
 endif
+endif
 
 # You can set these variables from the command line.
 SPHINXBUILD   = sphinx-build
-- 
2.49.0

Re: [PATCH v3 13/16] docs: conf.py: add include_pattern to speedup

[Donald Hunter]

Mauro Carvalho Chehab <mchehab+huawei@kernel.org> writes:

> Now that we have a parser for yaml, use include_pattern, adding
> just yaml files from the only directory we currently process.
>
> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
> ---
>  Documentation/conf.py | 7 +++++--
>  1 file changed, 5 insertions(+), 2 deletions(-)
>
> diff --git a/Documentation/conf.py b/Documentation/conf.py
> index b8668bcaf090..60e6998e49e1 100644
> --- a/Documentation/conf.py
> +++ b/Documentation/conf.py
> @@ -222,10 +222,13 @@ language = 'en'
>  
>  # List of patterns, relative to source directory, that match files and
>  # directories to ignore when looking for source files.
> +include_patterns = [
> +	'**.rst',
> +	'netlink/specs/*.yaml',
> +]

It's unfortunate where you added the include patterns because the
adjacent comment is specific to exclude patterns. I suggest rewording
the comment to be relevant to both.

> +
>  exclude_patterns = [
>  	'output',
> -	'devicetree/bindings/**.yaml',
> -	'netlink/*.yaml',
>  ]
>  
>  # The reST default role (used for this markup: `text`) to use for all

Re: [PATCH v3 12/16] docs: conf.py: don't handle yaml files outside Netlink specs

[Donald Hunter]

Mauro Carvalho Chehab <mchehab+huawei@kernel.org> writes:

> The parser_yaml extension already has a logic to prevent
> handing all yaml documents. However, if we don't also exclude
> the patterns at conf.py, the build time would increase a lot,
> and warnings like those would be generated:
>
>     Documentation/netlink/genetlink.yaml: WARNING: o documento não está incluído em nenhum toctree
>     Documentation/netlink/genetlink-c.yaml: WARNING: o documento não está incluído em nenhum toctree
>     Documentation/netlink/genetlink-legacy.yaml: WARNING: o documento não está incluído em nenhum toctree
>     Documentation/netlink/index.rst: WARNING: o documento não está incluído em nenhum toctree
>     Documentation/netlink/netlink-raw.yaml: WARNING: o documento não está incluído em nenhum toctree
>
> Add some exclusion rules to prevent that.
>
> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
> ---
>  Documentation/conf.py | 6 +++++-
>  1 file changed, 5 insertions(+), 1 deletion(-)
>
> diff --git a/Documentation/conf.py b/Documentation/conf.py
> index add6ce78dd80..b8668bcaf090 100644
> --- a/Documentation/conf.py
> +++ b/Documentation/conf.py
> @@ -222,7 +222,11 @@ language = 'en'
>  
>  # List of patterns, relative to source directory, that match files and
>  # directories to ignore when looking for source files.
> -exclude_patterns = ['output']
> +exclude_patterns = [
> +	'output',
> +	'devicetree/bindings/**.yaml',
> +	'netlink/*.yaml',
> +]

Please drop this patch from the series.

>  # The reST default role (used for this markup: `text`) to use for all
>  # documents.