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Message-ID: <acf47cc1-3aaa-4ca4-b0f5-434ad6d6b0dd@linux.alibaba.com>
Date: Wed, 24 Apr 2024 22:26:36 +0800
From: Heng Qi <hengqi@...ux.alibaba.com>
To: "Michael S. Tsirkin" <mst@...hat.com>
Cc: netdev@...r.kernel.org, virtualization@...ts.linux.dev,
 Jakub Kicinski <kuba@...nel.org>, "David S . Miller" <davem@...emloft.net>,
 Eric Dumazet <edumazet@...gle.com>, Paolo Abeni <pabeni@...hat.com>,
 Jason Wang <jasowang@...hat.com>, Brett Creeley <bcreeley@....com>,
 Ratheesh Kannoth <rkannoth@...vell.com>,
 Alexander Lobakin <aleksander.lobakin@...el.com>,
 Xuan Zhuo <xuanzhuo@...ux.alibaba.com>
Subject: Re: [PATCH RESEND net-next v7 0/4] ethtool: provide the dim profile
 fine-tuning channel


在 2024/4/23 上午4:55, Michael S. Tsirkin 写道:
> On Mon, Apr 15, 2024 at 09:38:03PM +0800, Heng Qi wrote:
>> 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".
>>
>> Since the profile now exists in netdevice, adding a function similar
>> to net_dim_get_rx_moderation_dev() with netdevice as argument is
>> nice, but this would be better along with cleaning up the rest of
>> the drivers, which we can get to very soon after this set.
>>
>> Please review, thank you very much!
>
> Acked-by: Michael S. Tsirkin <mst@...hat.com>

Hi Michael,

Thanks for your ACK, the profile series has progressed to v9 and is still

being iterated. it would be better to collect your tag again in a newer 
version.

Thanks!

>
>> Changelog
>> =====
>> v6->v7:
>>    - A new wrapper struct pointer is used in struct net_device.
>>    - Add IS_ENABLED(CONFIG_DIMLIB) to avoid compiler warnings.
>>    - Profile fields changed from u16 to u32.
>>
>> v5->v6:
>>    - Place the profile in netdevice to bypass the driver.
>>      The interaction code of ethtool <-> kernel has not changed at all,
>>      only the interaction part of kernel <-> driver has changed.
>>
>> v4->v5:
>>    - Update some snippets from Kuba, Thanks.
>>
>> v3->v4:
>>    - Some tiny updates and patch 1 only add a new comment.
>>
>> 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
>>
>> Heng Qi (4):
>>    linux/dim: move useful macros to .h file
>>    ethtool: provide customized dim profile management
>>    virtio-net: refactor dim initialization/destruction
>>    virtio-net: support dim profile fine-tuning
>>
>> Heng Qi (4):
>>    linux/dim: move useful macros to .h file
>>    ethtool: provide customized dim profile management
>>    virtio-net: refactor dim initialization/destruction
>>    virtio-net: support dim profile fine-tuning
>>
>>   Documentation/netlink/specs/ethtool.yaml     |  33 +++
>>   Documentation/networking/ethtool-netlink.rst |   8 +
>>   drivers/net/virtio_net.c                     |  46 +++--
>>   include/linux/dim.h                          |  13 ++
>>   include/linux/ethtool.h                      |  11 +-
>>   include/linux/netdevice.h                    |  24 +++
>>   include/uapi/linux/ethtool_netlink.h         |  24 +++
>>   lib/dim/net_dim.c                            |  10 +-
>>   net/core/dev.c                               |  83 ++++++++
>>   net/ethtool/coalesce.c                       | 201 ++++++++++++++++++-
>>   10 files changed, 430 insertions(+), 23 deletions(-)
>>
>> -- 
>> 2.32.0.3.g01195cf9f

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