netdev - [PATCH net-next v3 0/3] ethtool: provide the dim profile fine-tuning channel

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Date: Tue,  2 Apr 2024 20:13:05 +0800
From: Heng Qi <hengqi@...ux.alibaba.com>
To: netdev@...r.kernel.org,
	virtualization@...ts.linux.dev
Cc: "David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	Jason Wang <jasowang@...hat.com>,
	"Michael S. Tsirkin" <mst@...hat.com>,
	Xuan Zhuo <xuanzhuo@...ux.alibaba.com>
Subject: [PATCH net-next v3 0/3] ethtool: provide the dim profile fine-tuning channel

The NetDIM library provides excellent acceleration for many modern
network cards. However, the default profiles of DIM limits its maximum
capabilities for different NICs, so providing a way which the NIC can
be custom configured is necessary.

Currently, interaction with the driver is still based on the commonly
used "ethtool -C". The driver declares its supported parameters based
on .supported_coalesce_params, and implements driver-related custom
restrictions in .set_coalesce and .get_coalesce.

Please review, thank you very much!

Changelog
=====
v2->v3:
  - Break up the attributes to avoid the use of raw c structs.
  - Use per-device profile instead of global profile in the driver.

v1->v2:
  - Use ethtool tool instead of net-sysfs

V1 link:
https://lore.kernel.org/all/1710421773-61277-1-git-send-email-hengqi@linux.alibaba.com/#r

Heng Qi (3):
  ethtool: provide customized dim profile management
  virtio-net: refactor dim initialization/destruction
  virtio-net: support dim profile fine-tuning

 Documentation/netlink/specs/ethtool.yaml     |  29 +++++
 Documentation/networking/ethtool-netlink.rst |   8 ++
 drivers/net/virtio_net.c                     |  79 ++++++++++---
 include/linux/dim.h                          |   7 ++
 include/linux/ethtool.h                      |  16 ++-
 include/linux/virtio_net.h                   |  11 ++
 include/uapi/linux/ethtool_netlink.h         |  24 ++++
 lib/dim/net_dim.c                            |   6 -
 net/ethtool/coalesce.c                       | 159 ++++++++++++++++++++++++++-
 9 files changed, 317 insertions(+), 22 deletions(-)

-- 
1.8.3.1