netdev - [PATCH net-next v2 0/4] tools: ynl: turn the page-pool sample into a real tool

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Message-ID: <20251107162227.980672-1-kuba@kernel.org>
Date: Fri,  7 Nov 2025 08:22:23 -0800
From: Jakub Kicinski <kuba@...nel.org>
To: davem@...emloft.net,
	donald.hunter@...il.com
Cc: netdev@...r.kernel.org,
	edumazet@...gle.com,
	pabeni@...hat.com,
	andrew+netdev@...n.ch,
	horms@...nel.org,
	sdf@...ichev.me,
	joe@...a.to,
	jstancek@...hat.com,
	Jakub Kicinski <kuba@...nel.org>
Subject: [PATCH net-next v2 0/4] tools: ynl: turn the page-pool sample into a real tool

The page-pool YNL sample is quite useful. It's helps calculate
recycling rate and memory consumption. Since we still haven't
figured out a way to integrate with iproute2 (not for the lack
of thinking how to solve it) - create a ynltool command in ynl.

Add page-pool and qstats support.

Most commands can use the Python YNL CLI directly but low level
stats often need aggregation or some math on top to be useful.
Specifically in this patch set:
 - page pool stats are aggregated and recycling rate computed
 - per-queue stats are used to compute traffic balance across queues

v2:
 - patch 1 was applied already
 - [patch 1 (was 2)] use kernel version
 - [patch 2 (was 3)] Makefile cleanup
v1: https://lore.kernel.org/20251104232348.1954349-1-kuba@kernel.org

Jakub Kicinski (4):
  tools: ynltool: create skeleton for the C command
  tools: ynltool: add page-pool stats
  tools: ynltool: add qstats support
  tools: ynltool: add traffic distribution balance

 tools/net/ynl/Makefile              |   3 +-
 tools/net/ynl/ynltool/Makefile      |  55 +++
 tools/net/ynl/ynltool/json_writer.h |  75 ++++
 tools/net/ynl/ynltool/main.h        |  66 +++
 tools/net/ynl/samples/page-pool.c   | 149 -------
 tools/net/ynl/ynltool/json_writer.c | 288 +++++++++++++
 tools/net/ynl/ynltool/main.c        | 242 +++++++++++
 tools/net/ynl/ynltool/page-pool.c   | 461 +++++++++++++++++++++
 tools/net/ynl/ynltool/qstats.c      | 621 ++++++++++++++++++++++++++++
 tools/net/ynl/ynltool/.gitignore    |   1 +
 10 files changed, 1811 insertions(+), 150 deletions(-)
 create mode 100644 tools/net/ynl/ynltool/Makefile
 create mode 100644 tools/net/ynl/ynltool/json_writer.h
 create mode 100644 tools/net/ynl/ynltool/main.h
 delete mode 100644 tools/net/ynl/samples/page-pool.c
 create mode 100644 tools/net/ynl/ynltool/json_writer.c
 create mode 100644 tools/net/ynl/ynltool/main.c
 create mode 100644 tools/net/ynl/ynltool/page-pool.c
 create mode 100644 tools/net/ynl/ynltool/qstats.c
 create mode 100644 tools/net/ynl/ynltool/.gitignore

-- 
2.51.1