From: Heng Qi <hengqi@linux.alibaba.com>
To: Jakub Kicinski <kuba@kernel.org>
Cc: netdev@vger.kernel.org, Eric Dumazet <edumazet@google.com>,
Paolo Abeni <pabeni@redhat.com>,
Vladimir Oltean <vladimir.oltean@nxp.com>,
"David S. Miller" <davem@davemloft.net>,
Jason Wang <jasowang@redhat.com>,
"Michael S. Tsirkin" <mst@redhat.com>,
vadim.fedorenko@linux.dev,
Alexander Lobakin <aleksander.lobakin@intel.com>,
Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Subject: Re: [PATCH net-next v2 2/2] virtio-net: support dim profile fine-tuning
Date: Fri, 29 Mar 2024 16:56:12 +0800 [thread overview]
Message-ID: <7e54d23c-caa6-4bbd-aef6-26ed6a9dd889@linux.alibaba.com> (raw)
In-Reply-To: <20240328094847.1af51a8d@kernel.org>
在 2024/3/29 上午12:48, Jakub Kicinski 写道:
> On Thu, 28 Mar 2024 10:12:10 +0800 Xuan Zhuo wrote:
>> For netdim, I think profiles are an aspect. In many cases, this can solve many
>> problems.
> Okay, but then you should try harder to hide all the config in the core.
> The driver should be blissfully unaware that the user is changing
> the settings. It should just continue calling net_dim_get_*moderation().
>
> You can create proper dim_init(), dim_destroy() functions for drivers
> to call, instead of doing
>
> INIT_WORK(&bla->dim.work, my_driver_do_dim_work);
>
> directly. In dim_init() you can hook the dim structure to net_device
> and then ethtool code can operation on it without driver involvement.
Ok. Will try this.
>
> About the uAPI - please make sure you add the new stuff to
> Documentation/netlink/specs/ethtool.yaml
> see: https://docs.kernel.org/next/userspace-api/netlink/specs.html
>
> And break up the attributes, please, no raw C structs of this nature:
>
> + return nla_put(skb, attr_type, sizeof(struct dim_cq_moder) *
> + NET_DIM_PARAMS_NUM_PROFILES, profs);
>
> They are hard to extend.
Sorry, I don't seem to get your point, why does this make extending hard?
Are you referring to specifying ETHTOOL_A_COALESCE_RX_EQE_PROFILE
as a nested array, i.e. having each element explicitly have an attr
name? or passing the
u16 pointer and length as arguments?
Thanks.
next prev parent reply other threads:[~2024-03-29 8:56 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-27 9:19 [PATCH net-next v2 0/2] ethtool: provide the dim profile fine-tuning channel Heng Qi
2024-03-27 9:19 ` [PATCH net-next v2 1/2] ethtool: provide customized dim profile management Heng Qi
2024-03-27 9:19 ` [PATCH net-next v2 2/2] virtio-net: support dim profile fine-tuning Heng Qi
2024-03-27 14:45 ` Alexander Lobakin
2024-03-28 0:32 ` Jakub Kicinski
2024-03-28 2:12 ` Xuan Zhuo
2024-03-28 16:48 ` Jakub Kicinski
2024-03-29 8:56 ` Heng Qi [this message]
2024-03-29 15:18 ` Jakub Kicinski
2024-03-28 2:26 ` Heng Qi
2024-03-28 2:02 ` Heng Qi
2024-03-28 7:27 ` Michael S. Tsirkin
2024-03-28 7:27 ` Michael S. Tsirkin
2024-03-28 7:51 ` Heng Qi
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