On 7/10/2023 5:25 PM, Xuan Zhuo wrote:
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On Mon, 10 Jul 2023 12:20:01 +0300, Gavin Li <gavinl@xxxxxxxxxx> wrote:
As far as I know, Heng Qi does that. I'm not sure, it's the same piece.
cc @Heng Qi
Thanks.
Do you mean the one below?
https://lists.oasis-open.org/archives/virtio-dev/202303/msg00415.html
The code is to implement what it described and I don't have better
words. So, I copied the text from Heng Qi's.
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
