netdev - Re: [PATCH net-next 6/8] virtio-net: support rx netdim

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Date: Mon, 14 Aug 2023 09:57:03 +0800
From: Heng Qi <hengqi@...ux.alibaba.com>
To: Simon Horman <horms@...nel.org>
Cc: "Michael S. Tsirkin" <mst@...hat.com>, Jason Wang <jasowang@...hat.com>,
 netdev@...r.kernel.org, virtualization@...ts.linux-foundation.org,
 "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>,
 Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
 Alexei Starovoitov <ast@...nel.org>, Daniel Borkmann <daniel@...earbox.net>,
 Jesper Dangaard Brouer <hawk@...nel.org>,
 John Fastabend <john.fastabend@...il.com>,
 Xuan Zhuo <xuanzhuo@...ux.alibaba.com>
Subject: Re: [PATCH net-next 6/8] virtio-net: support rx netdim

在 2023/8/13 上午1:34, Simon Horman 写道:
> On Fri, Aug 11, 2023 at 02:55:10PM +0800, Heng Qi wrote:
>> By comparing the traffic information in the complete napi processes,
>> let the virtio-net driver automatically adjust the coalescing
>> moderation parameters of each receive queue.
>>
>> Signed-off-by: Heng Qi <hengqi@...ux.alibaba.com>
>> ---
>>   drivers/net/virtio_net.c | 124 +++++++++++++++++++++++++++++++++------
>>   1 file changed, 106 insertions(+), 18 deletions(-)
>>
>> diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
>> index 0318113bd8c2..3fb801a7a785 100644
>> --- a/drivers/net/virtio_net.c
>> +++ b/drivers/net/virtio_net.c
>> @@ -19,6 +19,7 @@
>>   #include <linux/average.h>
>>   #include <linux/filter.h>
>>   #include <linux/kernel.h>
>> +#include <linux/dim.h>
>>   #include <net/route.h>
>>   #include <net/xdp.h>
>>   #include <net/net_failover.h>
>> @@ -168,8 +169,17 @@ struct receive_queue {
>>   
>>   	struct virtnet_rq_stats stats;
>>   
>> +	/* The number of rx notifications */
>> +	u16 calls;
>> +
>> +	/* Is dynamic interrupt moderation enabled? */
>> +	bool dim_enabled;
>> +
>>   	struct virtnet_interrupt_coalesce intr_coal;
>>   
>> +	/* Dynamic Iterrupt Moderation */
> Hi Heng Qi,
>
> nit: Iterrupt -> interrupt

Hi,

Will fix in the next version ^^

>
>       Also, elsewhere in this patchset.
>
>       ./checkpatch.pl --codespell is your friend here

Ok. I will try this.

Thanks!

>
>> +	struct dim dim;
>> +
>>   	/* Chain pages by the private ptr. */
>>   	struct page *pages;
>>   
> ...