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Message-ID: <1688981109.6377137-1-xuanzhuo@linux.alibaba.com>
Date: Mon, 10 Jul 2023 17:25:09 +0800
From: Xuan Zhuo <xuanzhuo@...ux.alibaba.com>
To: Gavin Li <gavinl@...dia.com>
Cc: <virtualization@...ts.linux-foundation.org>,
<netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<bpf@...r.kernel.org>, <mst@...hat.com>, <jasowang@...hat.com>,
<xuanzhuo@...ux.alibaba.com>, <davem@...emloft.net>,
<edumazet@...gle.com>, <kuba@...nel.org>, <pabeni@...hat.com>,
<ast@...nel.org>, <daniel@...earbox.net>, <hawk@...nel.org>,
<john.fastabend@...il.com>, <jiri@...dia.com>,
<dtatulea@...dia.com>, "Heng Qi" <hengqi@...ux.alibaba.com>
Subject: Re: [PATCH net-next V1 0/4] virtio_net: add per queue interrupt coalescing support
On Mon, 10 Jul 2023 12:20:01 +0300, Gavin Li <gavinl@...dia.com> wrote:
As far as I know, Heng Qi does that. I'm not sure, it's the same piece.
cc @Heng Qi
Thanks.
> Currently, coalescing parameters are grouped for all transmit and receive
> virtqueues. This patch series add support to set or get the parameters for
> a specified virtqueue.
>
> When the traffic between virtqueues is unbalanced, for example, one virtqueue
> is busy and another virtqueue is idle, then it will be very useful to
> control coalescing parameters at the virtqueue granularity.
>
> Example command:
> $ ethtool -Q eth5 queue_mask 0x1 --coalesce tx-packets 10
> Would set max_packets=10 to VQ 1.
> $ ethtool -Q eth5 queue_mask 0x1 --coalesce rx-packets 10
> Would set max_packets=10 to VQ 0.
> $ ethtool -Q eth5 queue_mask 0x1 --show-coalesce
> Queue: 0
> Adaptive RX: off TX: off
> stats-block-usecs: 0
> sample-interval: 0
> pkt-rate-low: 0
> pkt-rate-high: 0
>
> rx-usecs: 222
> rx-frames: 0
> rx-usecs-irq: 0
> rx-frames-irq: 256
>
> tx-usecs: 222
> tx-frames: 0
> tx-usecs-irq: 0
> tx-frames-irq: 256
>
> rx-usecs-low: 0
> rx-frame-low: 0
> tx-usecs-low: 0
> tx-frame-low: 0
>
> rx-usecs-high: 0
> rx-frame-high: 0
> tx-usecs-high: 0
> tx-frame-high: 0
>
> In this patch series:
> Patch-1: Extract interrupt coalescing settings to a structure.
> Patch-2: Extract get/set interrupt coalesce to a function.
> Patch-3: Support per queue interrupt coalesce command.
> Patch-4: Enable per queue interrupt coalesce feature.
>
> Gavin Li (4):
> virtio_net: extract interrupt coalescing settings to a structure
> virtio_net: extract get/set interrupt coalesce to a function
> virtio_net: support per queue interrupt coalesce command
> virtio_net: enable per queue interrupt coalesce feature
>
> drivers/net/virtio_net.c | 169 ++++++++++++++++++++++++++------
> include/uapi/linux/virtio_net.h | 14 +++
> 2 files changed, 154 insertions(+), 29 deletions(-)
>
> --
> 2.39.1
>
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