On Fri, Dec 23, 2022 at 01:55:47PM +0800, Jason Wang wrote:
This patch adds a new config ops callback to allow individual
simulator to implement the vendor stats callback.

Acked-by: Eugenio PĂ©rez <epere...@redhat.com>
Signed-off-by: Jason Wang <jasow...@redhat.com>
---
drivers/vdpa/vdpa_sim/vdpa_sim.c | 14 ++++++++++++++
drivers/vdpa/vdpa_sim/vdpa_sim.h |  3 +++
2 files changed, 17 insertions(+)

Reviewed-by: Stefano Garzarella <sgarz...@redhat.com>


diff --git a/drivers/vdpa/vdpa_sim/vdpa_sim.c b/drivers/vdpa/vdpa_sim/vdpa_sim.c
index 341da107e7da..45d3f84b7937 100644
--- a/drivers/vdpa/vdpa_sim/vdpa_sim.c
+++ b/drivers/vdpa/vdpa_sim/vdpa_sim.c
@@ -424,6 +424,18 @@ static int vdpasim_get_vq_state(struct vdpa_device *vdpa, 
u16 idx,
        return 0;
}

+static int vdpasim_get_vq_stats(struct vdpa_device *vdpa, u16 idx,
+                               struct sk_buff *msg,
+                               struct netlink_ext_ack *extack)
+{
+       struct vdpasim *vdpasim = vdpa_to_sim(vdpa);
+
+       if (vdpasim->dev_attr.get_stats)
+               return vdpasim->dev_attr.get_stats(vdpasim, idx,
+                                                  msg, extack);
+       return -EOPNOTSUPP;
+}
+
static u32 vdpasim_get_vq_align(struct vdpa_device *vdpa)
{
        return VDPASIM_QUEUE_ALIGN;
@@ -710,6 +722,7 @@ static const struct vdpa_config_ops vdpasim_config_ops = {
        .set_vq_ready           = vdpasim_set_vq_ready,
        .get_vq_ready           = vdpasim_get_vq_ready,
        .set_vq_state           = vdpasim_set_vq_state,
+       .get_vendor_vq_stats    = vdpasim_get_vq_stats,
        .get_vq_state           = vdpasim_get_vq_state,
        .get_vq_align           = vdpasim_get_vq_align,
        .get_vq_group           = vdpasim_get_vq_group,
@@ -743,6 +756,7 @@ static const struct vdpa_config_ops 
vdpasim_batch_config_ops = {
        .set_vq_ready           = vdpasim_set_vq_ready,
        .get_vq_ready           = vdpasim_get_vq_ready,
        .set_vq_state           = vdpasim_set_vq_state,
+       .get_vendor_vq_stats    = vdpasim_get_vq_stats,
        .get_vq_state           = vdpasim_get_vq_state,
        .get_vq_align           = vdpasim_get_vq_align,
        .get_vq_group           = vdpasim_get_vq_group,
diff --git a/drivers/vdpa/vdpa_sim/vdpa_sim.h b/drivers/vdpa/vdpa_sim/vdpa_sim.h
index 51c070a543f1..d2a08c0abad7 100644
--- a/drivers/vdpa/vdpa_sim/vdpa_sim.h
+++ b/drivers/vdpa/vdpa_sim/vdpa_sim.h
@@ -48,6 +48,9 @@ struct vdpasim_dev_attr {
        work_func_t work_fn;
        void (*get_config)(struct vdpasim *vdpasim, void *config);
        void (*set_config)(struct vdpasim *vdpasim, const void *config);
+       int (*get_stats)(struct vdpasim *vdpasim, u16 idx,
+                        struct sk_buff *msg,
+                        struct netlink_ext_ack *extack);
};

/* State of each vdpasim device */
--
2.25.1


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