[1/2] vhost: introduce API to get vDPA device number

  From: Xiaolong Ye <xiaolong.ye@intel.com>

It's used to get number of available registered vDPA devices.

Signed-off-by: Xiaolong Ye <xiaolong.ye@intel.com>
Acked-by: Xiao Wang <xiao.w.wang@intel.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
---
 lib/librte_vhost/rte_vdpa.h            | 3 +++
 lib/librte_vhost/rte_vhost_version.map | 1 +
 lib/librte_vhost/vdpa.c                | 6 ++++++
 3 files changed, 10 insertions(+)
  

Please ignore this email I sent by mistake.

BRs,
Xiao

> -----Original Message-----
> From: Wang, Xiao W
> Sent: Wednesday, January 23, 2019 8:57 PM
> To: maxime.coquelin@redhat.com
> Cc: dev@dpdk.org; Bie, Tiwei <tiwei.bie@intel.com>; Ye, Xiaolong
> <xiaolong.ye@intel.com>
> Subject: [PATCH 1/2] vhost: introduce API to get vDPA device number
> 
> From: Xiaolong Ye <xiaolong.ye@intel.com>
> 
> It's used to get number of available registered vDPA devices.
> 
> Signed-off-by: Xiaolong Ye <xiaolong.ye@intel.com>
> Acked-by: Xiao Wang <xiao.w.wang@intel.com>
> Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
> ---
>  lib/librte_vhost/rte_vdpa.h            | 3 +++
>  lib/librte_vhost/rte_vhost_version.map | 1 +
>  lib/librte_vhost/vdpa.c                | 6 ++++++
>  3 files changed, 10 insertions(+)
> 
> diff --git a/lib/librte_vhost/rte_vdpa.h b/lib/librte_vhost/rte_vdpa.h
> index 90465ca26..b8223e337 100644
> --- a/lib/librte_vhost/rte_vdpa.h
> +++ b/lib/librte_vhost/rte_vdpa.h
> @@ -84,4 +84,7 @@ rte_vdpa_find_device_id(struct rte_vdpa_dev_addr
> *addr);
>  struct rte_vdpa_device * __rte_experimental
>  rte_vdpa_get_device(int did);
> 
> +/* Get current available vdpa device number */
> +int __rte_experimental
> +rte_vdpa_get_device_num(void);
>  #endif /* _RTE_VDPA_H_ */
> diff --git a/lib/librte_vhost/rte_vhost_version.map
> b/lib/librte_vhost/rte_vhost_version.map
> index da220dd02..ae39b6e21 100644
> --- a/lib/librte_vhost/rte_vhost_version.map
> +++ b/lib/librte_vhost/rte_vhost_version.map
> @@ -67,6 +67,7 @@ EXPERIMENTAL {
>  	rte_vdpa_unregister_device;
>  	rte_vdpa_find_device_id;
>  	rte_vdpa_get_device;
> +	rte_vdpa_get_device_num;
>  	rte_vhost_driver_attach_vdpa_device;
>  	rte_vhost_driver_detach_vdpa_device;
>  	rte_vhost_driver_get_vdpa_device_id;
> diff --git a/lib/librte_vhost/vdpa.c b/lib/librte_vhost/vdpa.c
> index c82fd4370..c2c5dff1d 100644
> --- a/lib/librte_vhost/vdpa.c
> +++ b/lib/librte_vhost/vdpa.c
> @@ -113,3 +113,9 @@ rte_vdpa_get_device(int did)
> 
>  	return vdpa_devices[did];
>  }
> +
> +int
> +rte_vdpa_get_device_num(void)
> +{
> +	return vdpa_device_num;
> +}
> --
> 2.15.1