virtio_pci: struct virtio_pci_common_cfg add queue_notify_data

Add queue_notify_data in struct virtio_pci_common_cfg, which comes from here https://github.com/oasis-tcs/virtio-spec/issues/89 In order not to affect the API, add a dedicated structure struct virtio_pci_modern_common_cfg to virtio_pci_modern.h. Since I want to add queue_reset after queue_notify_data, I submitted this patch first. Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com> Acked-by: Jason Wang <jasowang@redhat.com> Message-Id: <20220801063902.129329-26-xuanzhuo@linux.alibaba.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
mariux64 · Aug 11, 2022 · ea02459 · ea02459
1 parent c790e8e
commit ea02459
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diff --git a/include/linux/virtio_pci_modern.h b/include/linux/virtio_pci_modern.h
@@ -5,6 +5,13 @@
 #include <linux/pci.h>
 #include <linux/virtio_pci.h>
 
+struct virtio_pci_modern_common_cfg {
+	struct virtio_pci_common_cfg cfg;
+
+	__le16 queue_notify_data;	/* read-write */
+	__le16 padding;
+};
+
 struct virtio_pci_modern_device {
 	struct pci_dev *pci_dev;
 

diff --git a/include/uapi/linux/virtio_pci.h b/include/uapi/linux/virtio_pci.h
@@ -202,6 +202,7 @@ struct virtio_pci_cfg_cap {
 #define VIRTIO_PCI_COMMON_Q_AVAILHI	44
 #define VIRTIO_PCI_COMMON_Q_USEDLO	48
 #define VIRTIO_PCI_COMMON_Q_USEDHI	52
+#define VIRTIO_PCI_COMMON_Q_NDATA	56
 
 #endif /* VIRTIO_PCI_NO_MODERN */