net/virtio: add virtio-user vring setting ops

[dpdk.git] / drivers / net / virtio / virtio_user / vhost_kernel.c

diff --git a/drivers/net/virtio/virtio_user/vhost_kernel.c b/drivers/net/virtio/virtio_user/vhost_kernel.c
index 69f932b..f6e7cf4 100644 (file)
--- a/drivers/net/virtio/virtio_user/vhost_kernel.c
+++ b/drivers/net/virtio/virtio_user/vhost_kernel.c
@@ -219,12 +219,49 @@ err:
        return -1;
 }
 
+static int
+vhost_kernel_set_vring(struct virtio_user_dev *dev, uint64_t req, struct vhost_vring_state *state)
+{
+       int ret, fd;
+       unsigned int index = state->index;
+
+       /* Convert from queue index to queue-pair & offset */
+       fd = dev->vhostfds[state->index / 2];
+       state->index %= 2;
+
+       ret = vhost_kernel_ioctl(fd, req, state);
+       if (ret < 0) {
+               PMD_DRV_LOG(ERR, "Failed to set vring (request %" PRIu64 ")", req);
+               return -1;
+       }
+
+       /* restore index back to queue index */
+       state->index = index;
+
+       return 0;
+}
+
+static int
+vhost_kernel_set_vring_num(struct virtio_user_dev *dev, struct vhost_vring_state *state)
+{
+       return vhost_kernel_set_vring(dev, VHOST_SET_VRING_NUM, state);
+}
+
+static int
+vhost_kernel_set_vring_base(struct virtio_user_dev *dev, struct vhost_vring_state *state)
+{
+       return vhost_kernel_set_vring(dev, VHOST_SET_VRING_BASE, state);
+}
+
+static int
+vhost_kernel_get_vring_base(struct virtio_user_dev *dev, struct vhost_vring_state *state)
+{
+       return vhost_kernel_set_vring(dev, VHOST_GET_VRING_BASE, state);
+}
+
 static uint64_t vhost_req_user_to_kernel[] = {
        [VHOST_USER_RESET_OWNER] = VHOST_RESET_OWNER,
        [VHOST_USER_SET_VRING_CALL] = VHOST_SET_VRING_CALL,
-       [VHOST_USER_SET_VRING_NUM] = VHOST_SET_VRING_NUM,
-       [VHOST_USER_SET_VRING_BASE] = VHOST_SET_VRING_BASE,
-       [VHOST_USER_GET_VRING_BASE] = VHOST_GET_VRING_BASE,
        [VHOST_USER_SET_VRING_ADDR] = VHOST_SET_VRING_ADDR,
        [VHOST_USER_SET_VRING_KICK] = VHOST_SET_VRING_KICK,
 };
@@ -245,10 +282,7 @@ vhost_kernel_send_request(struct virtio_user_dev *dev,
        req_kernel = vhost_req_user_to_kernel[req];
 
        switch (req_kernel) {
-       case VHOST_SET_VRING_NUM:
        case VHOST_SET_VRING_ADDR:
-       case VHOST_SET_VRING_BASE:
-       case VHOST_GET_VRING_BASE:
        case VHOST_SET_VRING_KICK:
        case VHOST_SET_VRING_CALL:
                queue_sel = *(unsigned int *)arg;
@@ -403,6 +437,9 @@ struct virtio_user_backend_ops virtio_ops_kernel = {
        .get_features = vhost_kernel_get_features,
        .set_features = vhost_kernel_set_features,
        .set_memory_table = vhost_kernel_set_memory_table,
+       .set_vring_num = vhost_kernel_set_vring_num,
+       .set_vring_base = vhost_kernel_set_vring_base,
+       .get_vring_base = vhost_kernel_get_vring_base,
        .send_request = vhost_kernel_send_request,
        .enable_qp = vhost_kernel_enable_queue_pair
 };