linux-kernel - [PATCH v2 07/17] vdpa_sim: add device id field in vdpasim_dev

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Date:   Thu, 26 Nov 2020 15:49:40 +0100
From:   Stefano Garzarella <sgarzare@...hat.com>
To:     virtualization@...ts.linux-foundation.org
Cc:     Stefan Hajnoczi <stefanha@...hat.com>,
        linux-kernel@...r.kernel.org, Laurent Vivier <lvivier@...hat.com>,
        Max Gurtovoy <mgurtovoy@...dia.com>,
        "Michael S. Tsirkin" <mst@...hat.com>, Eli Cohen <elic@...dia.com>,
        Jason Wang <jasowang@...hat.com>
Subject: [PATCH v2 07/17] vdpa_sim: add device id field in vdpasim_dev_attr

Remove VDPASIM_DEVICE_ID macro and add 'id' field in vdpasim_dev_attr,
that will be returned by vdpasim_get_device_id().

Use VIRTIO_ID_NET for vDPA-net simulator device id.

Co-developed-by: Max Gurtovoy <mgurtovoy@...dia.com>
Signed-off-by: Max Gurtovoy <mgurtovoy@...dia.com>
Signed-off-by: Stefano Garzarella <sgarzare@...hat.com>
---
 drivers/vdpa/vdpa_sim/vdpa_sim.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/vdpa/vdpa_sim/vdpa_sim.c b/drivers/vdpa/vdpa_sim/vdpa_sim.c
index f98262add0e1..393b54a9f0e4 100644
--- a/drivers/vdpa/vdpa_sim/vdpa_sim.c
+++ b/drivers/vdpa/vdpa_sim/vdpa_sim.c
@@ -44,7 +44,6 @@ struct vdpasim_virtqueue {
 
 #define VDPASIM_QUEUE_ALIGN PAGE_SIZE
 #define VDPASIM_QUEUE_MAX 256
-#define VDPASIM_DEVICE_ID 0x1
 #define VDPASIM_VENDOR_ID 0
 #define VDPASIM_IOTLB_LIMIT 0 /* unlimited */
 #define VDPASIM_VQ_NUM 0x2
@@ -57,6 +56,7 @@ static u64 vdpasim_features = (1ULL << VIRTIO_F_ANY_LAYOUT) |
 
 struct vdpasim_dev_attr {
 	int nvqs;
+	u32 id;
 };
 
 /* State of each vdpasim device */
@@ -536,7 +536,9 @@ static u16 vdpasim_get_vq_num_max(struct vdpa_device *vdpa)
 
 static u32 vdpasim_get_device_id(struct vdpa_device *vdpa)
 {
-	return VDPASIM_DEVICE_ID;
+	struct vdpasim *vdpasim = vdpa_to_sim(vdpa);
+
+	return vdpasim->dev_attr.id;
 }
 
 static u32 vdpasim_get_vendor_id(struct vdpa_device *vdpa)
@@ -719,6 +721,7 @@ static int __init vdpasim_dev_init(void)
 {
 	struct vdpasim_dev_attr dev_attr = {};
 
+	dev_attr.id = VIRTIO_ID_NET;
 	dev_attr.nvqs = VDPASIM_VQ_NUM;
 
 	vdpasim_dev = vdpasim_create(&dev_attr);
-- 
2.26.2