Re: [PATCH v6 7/7] virtio-net: add migration support for RSS and hash report

[Yuri Benditovich <yuri.benditovich@daynix.com>]

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ping

On Fri, Mar 20, 2020 at 1:58 PM Yuri Benditovich <
yuri.benditovich@daynix.com> wrote:

> Save and restore RSS/hash report configuration.
>
> Signed-off-by: Yuri Benditovich <yuri.benditovich@daynix.com>
> ---
>  hw/net/virtio-net.c | 37 +++++++++++++++++++++++++++++++++++++
>  1 file changed, 37 insertions(+)
>
> diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c
> index a0614ad4e6..7de7587abd 100644
> --- a/hw/net/virtio-net.c
> +++ b/hw/net/virtio-net.c
> @@ -2842,6 +2842,13 @@ static int virtio_net_post_load_device(void
> *opaque, int version_id)
>          }
>      }
>
> +    if (n->rss_data.enabled) {
> +        trace_virtio_net_rss_enable(n->rss_data.hash_types,
> +                                    n->rss_data.indirections_len,
> +                                    sizeof(n->rss_data.key));
> +    } else {
> +        trace_virtio_net_rss_disable();
> +    }
>      return 0;
>  }
>
> @@ -3019,6 +3026,32 @@ static const VMStateDescription
> vmstate_virtio_net_has_vnet = {
>      },
>  };
>
> +static bool virtio_net_rss_needed(void *opaque)
> +{
> +    return VIRTIO_NET(opaque)->rss_data.enabled;
> +}
> +
> +static const VMStateDescription vmstate_virtio_net_rss = {
> +    .name      = "virtio-net-device/rss",
> +    .version_id = 1,
> +    .minimum_version_id = 1,
> +    .needed = virtio_net_rss_needed,
> +    .fields = (VMStateField[]) {
> +        VMSTATE_BOOL(rss_data.enabled, VirtIONet),
> +        VMSTATE_BOOL(rss_data.redirect, VirtIONet),
> +        VMSTATE_BOOL(rss_data.populate_hash, VirtIONet),
> +        VMSTATE_UINT32(rss_data.hash_types, VirtIONet),
> +        VMSTATE_UINT16(rss_data.indirections_len, VirtIONet),
> +        VMSTATE_UINT16(rss_data.default_queue, VirtIONet),
> +        VMSTATE_UINT8_ARRAY(rss_data.key, VirtIONet,
> +                            VIRTIO_NET_RSS_MAX_KEY_SIZE),
> +        VMSTATE_VARRAY_UINT16_ALLOC(rss_data.indirections_table,
> VirtIONet,
> +                                    rss_data.indirections_len, 0,
> +                                    vmstate_info_uint16, uint16_t),
> +        VMSTATE_END_OF_LIST()
> +    },
> +};
> +
>  static const VMStateDescription vmstate_virtio_net_device = {
>      .name = "virtio-net-device",
>      .version_id = VIRTIO_NET_VM_VERSION,
> @@ -3069,6 +3102,10 @@ static const VMStateDescription
> vmstate_virtio_net_device = {
>                              has_ctrl_guest_offloads),
>          VMSTATE_END_OF_LIST()
>     },
> +    .subsections = (const VMStateDescription * []) {
> +        &vmstate_virtio_net_rss,
> +        NULL
> +    }
>  };
>
>  static NetClientInfo net_virtio_info = {
> --
> 2.17.1
>
>

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