netdev - Re: [PATCH net-next v2 2/5] virtio-net: separate rx/tx coalescing moderation cmds

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Date: Thu, 9 Nov 2023 12:18:53 +0800
From: Jason Wang <jasowang@...hat.com>
To: Heng Qi <hengqi@...ux.alibaba.com>
Cc: netdev@...r.kernel.org, virtualization@...ts.linux-foundation.org, 
	"Michael S. Tsirkin" <mst@...hat.com>, Eric Dumazet <edumazet@...gle.com>, Paolo Abeni <pabeni@...hat.com>, 
	"David S. Miller" <davem@...emloft.net>, Jesper Dangaard Brouer <hawk@...nel.org>, 
	John Fastabend <john.fastabend@...il.com>, Alexei Starovoitov <ast@...nel.org>, 
	Simon Horman <horms@...nel.org>, Jakub Kicinski <kuba@...nel.org>, "Liu, Yujie" <yujie.liu@...el.com>
Subject: Re: [PATCH net-next v2 2/5] virtio-net: separate rx/tx coalescing
 moderation cmds

On Thu, Nov 2, 2023 at 9:10 PM Heng Qi <hengqi@...ux.alibaba.com> wrote:
>
> This patch separates the rx and tx global coalescing moderation
> commands to support netdim switches in subsequent patches.
>
> Signed-off-by: Heng Qi <hengqi@...ux.alibaba.com>

Acked-by: Jason Wang <jasowang@...hat.com>

Thanks

> ---
> v1->v2:
> - Add 'i' definition.
>
>  drivers/net/virtio_net.c | 31 ++++++++++++++++++++++++++++---
>  1 file changed, 28 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
> index 0ad2894e6a5e..0285301caf78 100644
> --- a/drivers/net/virtio_net.c
> +++ b/drivers/net/virtio_net.c
> @@ -3266,10 +3266,10 @@ static int virtnet_get_link_ksettings(struct net_device *dev,
>         return 0;
>  }
>
> -static int virtnet_send_notf_coal_cmds(struct virtnet_info *vi,
> -                                      struct ethtool_coalesce *ec)
> +static int virtnet_send_tx_notf_coal_cmds(struct virtnet_info *vi,
> +                                         struct ethtool_coalesce *ec)
>  {
> -       struct scatterlist sgs_tx, sgs_rx;
> +       struct scatterlist sgs_tx;
>         int i;
>
>         vi->ctrl->coal_tx.tx_usecs = cpu_to_le32(ec->tx_coalesce_usecs);
> @@ -3289,6 +3289,15 @@ static int virtnet_send_notf_coal_cmds(struct virtnet_info *vi,
>                 vi->sq[i].intr_coal.max_packets = ec->tx_max_coalesced_frames;
>         }
>
> +       return 0;
> +}
> +
> +static int virtnet_send_rx_notf_coal_cmds(struct virtnet_info *vi,
> +                                         struct ethtool_coalesce *ec)
> +{
> +       struct scatterlist sgs_rx;
> +       int i;
> +
>         vi->ctrl->coal_rx.rx_usecs = cpu_to_le32(ec->rx_coalesce_usecs);
>         vi->ctrl->coal_rx.rx_max_packets = cpu_to_le32(ec->rx_max_coalesced_frames);
>         sg_init_one(&sgs_rx, &vi->ctrl->coal_rx, sizeof(vi->ctrl->coal_rx));
> @@ -3309,6 +3318,22 @@ static int virtnet_send_notf_coal_cmds(struct virtnet_info *vi,
>         return 0;
>  }
>
> +static int virtnet_send_notf_coal_cmds(struct virtnet_info *vi,
> +                                      struct ethtool_coalesce *ec)
> +{
> +       int err;
> +
> +       err = virtnet_send_tx_notf_coal_cmds(vi, ec);
> +       if (err)
> +               return err;
> +
> +       err = virtnet_send_rx_notf_coal_cmds(vi, ec);
> +       if (err)
> +               return err;
> +
> +       return 0;
> +}
> +
>  static int virtnet_send_ctrl_coal_vq_cmd(struct virtnet_info *vi,
>                                          u16 vqn, u32 max_usecs, u32 max_packets)
>  {
> --
> 2.19.1.6.gb485710b
>
>