include/uapi/linux/virtio_scsi.h

Source file repositories/reference/linux-study-clean/include/uapi/linux/virtio_scsi.h

File Facts

System
Linux kernel
Corpus path
include/uapi/linux/virtio_scsi.h
Extension
.h
Size
6085 bytes
Lines
173
Domain
Core OS
Bucket
Core Kernel Interface
Inferred role
Core OS: implementation source
Status
source implementation candidate

Why This File Exists

Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.

Dependency Surface

Detected Declarations

Annotated Snippet

struct virtio_scsi_cmd_req {
	__u8 lun[8];		/* Logical Unit Number */
	__virtio64 tag;		/* Command identifier */
	__u8 task_attr;		/* Task attribute */
	__u8 prio;		/* SAM command priority field */
	__u8 crn;
	__u8 cdb[VIRTIO_SCSI_CDB_SIZE];
} __attribute__((packed));

/* SCSI command request, followed by protection information */
struct virtio_scsi_cmd_req_pi {
	__u8 lun[8];		/* Logical Unit Number */
	__virtio64 tag;		/* Command identifier */
	__u8 task_attr;		/* Task attribute */
	__u8 prio;		/* SAM command priority field */
	__u8 crn;
	__virtio32 pi_bytesout;	/* DataOUT PI Number of bytes */
	__virtio32 pi_bytesin;		/* DataIN PI Number of bytes */
	__u8 cdb[VIRTIO_SCSI_CDB_SIZE];
} __attribute__((packed));

/* Response, followed by sense data and data-in */
struct virtio_scsi_cmd_resp {
	__virtio32 sense_len;		/* Sense data length */
	__virtio32 resid;		/* Residual bytes in data buffer */
	__virtio16 status_qualifier;	/* Status qualifier */
	__u8 status;		/* Command completion status */
	__u8 response;		/* Response values */
	__u8 sense[VIRTIO_SCSI_SENSE_SIZE];
} __attribute__((packed));

/* Task Management Request */
struct virtio_scsi_ctrl_tmf_req {
	__virtio32 type;
	__virtio32 subtype;
	__u8 lun[8];
	__virtio64 tag;
} __attribute__((packed));

struct virtio_scsi_ctrl_tmf_resp {
	__u8 response;
} __attribute__((packed));

/* Asynchronous notification query/subscription */
struct virtio_scsi_ctrl_an_req {
	__virtio32 type;
	__u8 lun[8];
	__virtio32 event_requested;
} __attribute__((packed));

struct virtio_scsi_ctrl_an_resp {
	__virtio32 event_actual;
	__u8 response;
} __attribute__((packed));

struct virtio_scsi_event {
	__virtio32 event;
	__u8 lun[8];
	__virtio32 reason;
} __attribute__((packed));

struct virtio_scsi_config {
	__virtio32 num_queues;
	__virtio32 seg_max;
	__virtio32 max_sectors;
	__virtio32 cmd_per_lun;
	__virtio32 event_info_size;
	__virtio32 sense_size;
	__virtio32 cdb_size;
	__virtio16 max_channel;
	__virtio16 max_target;
	__virtio32 max_lun;
} __attribute__((packed));

/* Feature Bits */
#define VIRTIO_SCSI_F_INOUT                    0
#define VIRTIO_SCSI_F_HOTPLUG                  1
#define VIRTIO_SCSI_F_CHANGE                   2
#define VIRTIO_SCSI_F_T10_PI                   3

/* Response codes */
#define VIRTIO_SCSI_S_OK                       0
#define VIRTIO_SCSI_S_OVERRUN                  1
#define VIRTIO_SCSI_S_ABORTED                  2
#define VIRTIO_SCSI_S_BAD_TARGET               3
#define VIRTIO_SCSI_S_RESET                    4
#define VIRTIO_SCSI_S_BUSY                     5
#define VIRTIO_SCSI_S_TRANSPORT_FAILURE        6
#define VIRTIO_SCSI_S_TARGET_FAILURE           7
#define VIRTIO_SCSI_S_NEXUS_FAILURE            8

Annotation

Implementation Notes