Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost

Pull virtio updates from Michael Tsirkin:

 - Per vq sizes in vdpa

 - Info query for block devices support in vdpa

 - DMA sync callbacks in vduse

 - Fixes, cleanups

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: (35 commits)
  virtio_net: rename free_old_xmit_skbs to free_old_xmit
  virtio_net: unify the code for recycling the xmit ptr
  virtio-net: add cond_resched() to the command waiting loop
  virtio-net: convert rx mode setting to use workqueue
  virtio: packed: fix unmap leak for indirect desc table
  vDPA: report virtio-blk flush info to user space
  vDPA: report virtio-block read-only info to user space
  vDPA: report virtio-block write zeroes configuration to user space
  vDPA: report virtio-block discarding configuration to user space
  vDPA: report virtio-block topology info to user space
  vDPA: report virtio-block MQ info to user space
  vDPA: report virtio-block max segments in a request to user space
  vDPA: report virtio-block block-size to user space
  vDPA: report virtio-block max segment size to user space
  vDPA: report virtio-block capacity to user space
  virtio: make virtio_bus const
  vdpa: make vdpa_bus const
  vDPA/ifcvf: implement vdpa_config_ops.get_vq_num_min
  vDPA/ifcvf: get_max_vq_size to return max size
  virtio_vdpa: create vqs with the actual size
  ...

4 files changed, 35 insertions, 5 deletions

diff --git a/include/linux/vdpa.h b/include/linux/vdpa.h
index db15ac07f8a6..7977ca03ac7a 100644
--- a/include/linux/vdpa.h
+++ b/include/linux/vdpa.h
@@ -7,6 +7,7 @@
 #include <linux/interrupt.h>
 #include <linux/vhost_iotlb.h>
 #include <linux/virtio_net.h>
+#include <linux/virtio_blk.h>
 #include <linux/if_ether.h>
 
 /**
@@ -195,6 +196,10 @@ struct vdpa_map_file {
  *				@idx: virtqueue index
  *				Returns int: irq number of a virtqueue,
  *				negative number if no irq assigned.
+ * @get_vq_size:		Get the size of a specific virtqueue (optional)
+ *				@vdev: vdpa device
+ *				@idx: virtqueue index
+ *				Return u16: the size of the virtqueue
  * @get_vq_align:		Get the virtqueue align requirement
  *				for the device
  *				@vdev: vdpa device
@@ -386,6 +391,7 @@ struct vdpa_config_ops {
 	(*get_vq_notification)(struct vdpa_device *vdev, u16 idx);
 	/* vq irq is not expected to be changed once DRIVER_OK is set */
 	int (*get_vq_irq)(struct vdpa_device *vdev, u16 idx);
+	u16 (*get_vq_size)(struct vdpa_device *vdev, u16 idx);
 
 	/* Device ops */
 	u32 (*get_vq_align)(struct vdpa_device *vdev);
diff --git a/include/uapi/linux/vdpa.h b/include/uapi/linux/vdpa.h
index 54b649ab0f22..43c51698195c 100644
--- a/include/uapi/linux/vdpa.h
+++ b/include/uapi/linux/vdpa.h
@@ -56,6 +56,23 @@ enum vdpa_attr {
 	/* virtio features that are provisioned to the vDPA device */
 	VDPA_ATTR_DEV_FEATURES,                 /* u64 */
 
+	VDPA_ATTR_DEV_BLK_CFG_CAPACITY,		/* u64 */
+	VDPA_ATTR_DEV_BLK_CFG_SEG_SIZE,		/* u32 */
+	VDPA_ATTR_DEV_BLK_CFG_BLK_SIZE,		/* u32 */
+	VDPA_ATTR_DEV_BLK_CFG_SEG_MAX,		/* u32 */
+	VDPA_ATTR_DEV_BLK_CFG_NUM_QUEUES,	/* u16 */
+	VDPA_ATTR_DEV_BLK_CFG_PHY_BLK_EXP,	/* u8 */
+	VDPA_ATTR_DEV_BLK_CFG_ALIGN_OFFSET,	/* u8 */
+	VDPA_ATTR_DEV_BLK_CFG_MIN_IO_SIZE,	/* u16 */
+	VDPA_ATTR_DEV_BLK_CFG_OPT_IO_SIZE,	/* u32 */
+	VDPA_ATTR_DEV_BLK_CFG_MAX_DISCARD_SEC,	/* u32 */
+	VDPA_ATTR_DEV_BLK_CFG_MAX_DISCARD_SEG,	/* u32 */
+	VDPA_ATTR_DEV_BLK_CFG_DISCARD_SEC_ALIGN,/* u32 */
+	VDPA_ATTR_DEV_BLK_CFG_MAX_WRITE_ZEROES_SEC,	/* u32 */
+	VDPA_ATTR_DEV_BLK_CFG_MAX_WRITE_ZEROES_SEG,	/* u32 */
+	VDPA_ATTR_DEV_BLK_CFG_READ_ONLY,		/* u8 */
+	VDPA_ATTR_DEV_BLK_CFG_FLUSH,		/* u8 */
+
 	/* new attributes must be added above here */
 	VDPA_ATTR_MAX,
 };
diff --git a/include/uapi/linux/vhost.h b/include/uapi/linux/vhost.h
index 649560c685f1..bea697390613 100644
--- a/include/uapi/linux/vhost.h
+++ b/include/uapi/linux/vhost.h
@@ -227,4 +227,11 @@
  */
 #define VHOST_VDPA_GET_VRING_DESC_GROUP	_IOWR(VHOST_VIRTIO, 0x7F,	\
 					      struct vhost_vring_state)
+
+/* Get the queue size of a specific virtqueue.
+ * userspace set the vring index in vhost_vring_state.index
+ * kernel set the queue size in vhost_vring_state.num
+ */
+#define VHOST_VDPA_GET_VRING_SIZE	_IOWR(VHOST_VIRTIO, 0x80,	\
+					      struct vhost_vring_state)
 #endif
diff --git a/include/uapi/linux/virtio_pci.h b/include/uapi/linux/virtio_pci.h
index ef3810dee7ef..a8208492e822 100644
--- a/include/uapi/linux/virtio_pci.h
+++ b/include/uapi/linux/virtio_pci.h
@@ -240,7 +240,7 @@ struct virtio_pci_cfg_cap {
 #define VIRTIO_ADMIN_CMD_LEGACY_DEV_CFG_READ		0x5
 #define VIRTIO_ADMIN_CMD_LEGACY_NOTIFY_INFO		0x6
 
-struct __packed virtio_admin_cmd_hdr {
+struct virtio_admin_cmd_hdr {
 	__le16 opcode;
 	/*
 	 * 1 - SR-IOV
@@ -252,20 +252,20 @@ struct __packed virtio_admin_cmd_hdr {
 	__le64 group_member_id;
 };
 
-struct __packed virtio_admin_cmd_status {
+struct virtio_admin_cmd_status {
 	__le16 status;
 	__le16 status_qualifier;
 	/* Unused, reserved for future extensions. */
 	__u8 reserved2[4];
 };
 
-struct __packed virtio_admin_cmd_legacy_wr_data {
+struct virtio_admin_cmd_legacy_wr_data {
 	__u8 offset; /* Starting offset of the register(s) to write. */
 	__u8 reserved[7];
 	__u8 registers[];
 };
 
-struct __packed virtio_admin_cmd_legacy_rd_data {
+struct virtio_admin_cmd_legacy_rd_data {
 	__u8 offset; /* Starting offset of the register(s) to read. */
 };
 
@@ -275,7 +275,7 @@ struct __packed virtio_admin_cmd_legacy_rd_data {
 
 #define VIRTIO_ADMIN_CMD_MAX_NOTIFY_INFO 4
 
-struct __packed virtio_admin_cmd_notify_info_data {
+struct virtio_admin_cmd_notify_info_data {
 	__u8 flags; /* 0 = end of list, 1 = owner device, 2 = member device */
 	__u8 bar; /* BAR of the member or the owner device */
 	__u8 padding[6];