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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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