1 files changed, 103 insertions, 0 deletions
diff --git a/drivers/vhost/tcm_vhost.h b/drivers/vhost/tcm_vhost.h
new file mode 100644
index 000000000000..d9e93557d669
--- /dev/null
+++ b/drivers/vhost/tcm_vhost.h
@@ -0,0 +1,103 @@
+#define TCM_VHOST_VERSION  "v0.1"
+#define TCM_VHOST_NAMELEN 256
+#define TCM_VHOST_MAX_CDB_SIZE 32
+struct tcm_vhost_cmd {
+        /* Descriptor from vhost_get_vq_desc() for virt_queue segment */
+        int tvc_vq_desc;
+        /* The Tag from include/linux/virtio_scsi.h:struct virtio_scsi_cmd_req */
+        u64 tvc_tag;
+        /* The number of scatterlists associated with this cmd */
+        u32 tvc_sgl_count;
+        /* Saved unpacked SCSI LUN for tcm_vhost_submission_work() */
+        u32 tvc_lun;
+        /* Pointer to the SGL formatted memory from virtio-scsi */
+        struct scatterlist *tvc_sgl;
+        /* Pointer to response */
+        struct virtio_scsi_cmd_resp __user *tvc_resp;
+        /* Pointer to vhost_scsi for our device */
+        struct vhost_scsi *tvc_vhost;
+        /* The TCM I/O descriptor that is accessed via container_of() */
+        struct se_cmd tvc_se_cmd;
+        /* work item used for cmwq dispatch to tcm_vhost_submission_work() */
+        struct work_struct work;
+        /* Copy of the incoming SCSI command descriptor block (CDB) */
+        unsigned char tvc_cdb[TCM_VHOST_MAX_CDB_SIZE];
+        /* Sense buffer that will be mapped into outgoing status */
+        unsigned char tvc_sense_buf[TRANSPORT_SENSE_BUFFER];
+        /* Completed commands list, serviced from vhost worker thread */
+        struct list_head tvc_completion_list;
+};
+struct tcm_vhost_nexus {
+        /* Pointer to TCM session for I_T Nexus */
+        struct se_session *tvn_se_sess;
+};
+struct tcm_vhost_nacl {
+        /* Binary World Wide unique Port Name for Vhost Initiator port */
+        u64 iport_wwpn;
+        /* ASCII formatted WWPN for Sas Initiator port */
+        char iport_name[TCM_VHOST_NAMELEN];
+        /* Returned by tcm_vhost_make_nodeacl() */
+        struct se_node_acl se_node_acl;
+};
+struct tcm_vhost_tpg {
+        /* Vhost port target portal group tag for TCM */
+        u16 tport_tpgt;
+        /* Used to track number of TPG Port/Lun Links wrt to explict I_T Nexus shutdown */
+        int tv_tpg_port_count;
+        /* Used for vhost_scsi device reference to tpg_nexus, protected by tv_tpg_mutex */
+        int tv_tpg_vhost_count;
+        /* list for tcm_vhost_list */
+        struct list_head tv_tpg_list;
+        /* Used to protect access for tpg_nexus */
+        struct mutex tv_tpg_mutex;
+        /* Pointer to the TCM VHost I_T Nexus for this TPG endpoint */
+        struct tcm_vhost_nexus *tpg_nexus;
+        /* Pointer back to tcm_vhost_tport */
+        struct tcm_vhost_tport *tport;
+        /* Returned by tcm_vhost_make_tpg() */
+        struct se_portal_group se_tpg;
+};
+struct tcm_vhost_tport {
+        /* SCSI protocol the tport is providing */
+        u8 tport_proto_id;
+        /* Binary World Wide unique Port Name for Vhost Target port */
+        u64 tport_wwpn;
+        /* ASCII formatted WWPN for Vhost Target port */
+        char tport_name[TCM_VHOST_NAMELEN];
+        /* Returned by tcm_vhost_make_tport() */
+        struct se_wwn tport_wwn;
+};
+/*
+ * As per request from MST, keep TCM_VHOST related ioctl defines out of
+ * linux/vhost.h (user-space) for now..
+ */
+#include <linux/vhost.h>
+/*
+ * Used by QEMU userspace to ensure a consistent vhost-scsi ABI.
+ *
+ * ABI Rev 0: July 2012 version starting point for v3.6-rc merge candidate +
+ *            RFC-v2 vhost-scsi userspace.  Add GET_ABI_VERSION ioctl usage
+ */
+#define VHOST_SCSI_ABI_VERSION  0
+struct vhost_scsi_target {
+        int abi_version;
+        char vhost_wwpn[TRANSPORT_IQN_LEN];
+        unsigned short vhost_tpgt;
+        unsigned short reserved;
+};
+/* VHOST_SCSI specific defines */
+#define VHOST_SCSI_SET_ENDPOINT _IOW(VHOST_VIRTIO, 0x40, struct vhost_scsi_target)
+#define VHOST_SCSI_CLEAR_ENDPOINT _IOW(VHOST_VIRTIO, 0x41, struct vhost_scsi_target)
+/* Changing this breaks userspace. */
+#define VHOST_SCSI_GET_ABI_VERSION _IOW(VHOST_VIRTIO, 0x42, int)

diff --git a/drivers/vhost/tcm_vhost.h b/drivers/vhost/tcm_vhost.h new file mode 100644 index 000000000000..d9e93557d669 --- /dev/null +++ b/drivers/vhost/tcm_vhost.h
@@ -0,0 +1,103 @@
	1	#define TCM_VHOST_VERSION "v0.1"
	2	#define TCM_VHOST_NAMELEN 256
	3	#define TCM_VHOST_MAX_CDB_SIZE 32
	4
	5	struct tcm_vhost_cmd {
	6	/* Descriptor from vhost_get_vq_desc() for virt_queue segment */
	7	int tvc_vq_desc;
	8	/* The Tag from include/linux/virtio_scsi.h:struct virtio_scsi_cmd_req */
	9	u64 tvc_tag;
	10	/* The number of scatterlists associated with this cmd */
	11	u32 tvc_sgl_count;
	12	/* Saved unpacked SCSI LUN for tcm_vhost_submission_work() */
	13	u32 tvc_lun;
	14	/* Pointer to the SGL formatted memory from virtio-scsi */
	15	struct scatterlist *tvc_sgl;
	16	/* Pointer to response */
	17	struct virtio_scsi_cmd_resp __user *tvc_resp;
	18	/* Pointer to vhost_scsi for our device */
	19	struct vhost_scsi *tvc_vhost;
	20	/* The TCM I/O descriptor that is accessed via container_of() */
	21	struct se_cmd tvc_se_cmd;
	22	/* work item used for cmwq dispatch to tcm_vhost_submission_work() */
	23	struct work_struct work;
	24	/* Copy of the incoming SCSI command descriptor block (CDB) */
	25	unsigned char tvc_cdb[TCM_VHOST_MAX_CDB_SIZE];
	26	/* Sense buffer that will be mapped into outgoing status */
	27	unsigned char tvc_sense_buf[TRANSPORT_SENSE_BUFFER];
	28	/* Completed commands list, serviced from vhost worker thread */
	29	struct list_head tvc_completion_list;
	30	};
	31
	32	struct tcm_vhost_nexus {
	33	/* Pointer to TCM session for I_T Nexus */
	34	struct se_session *tvn_se_sess;
	35	};
	36
	37	struct tcm_vhost_nacl {
	38	/* Binary World Wide unique Port Name for Vhost Initiator port */
	39	u64 iport_wwpn;
	40	/* ASCII formatted WWPN for Sas Initiator port */
	41	char iport_name[TCM_VHOST_NAMELEN];
	42	/* Returned by tcm_vhost_make_nodeacl() */
	43	struct se_node_acl se_node_acl;
	44	};
	45
	46	struct tcm_vhost_tpg {
	47	/* Vhost port target portal group tag for TCM */
	48	u16 tport_tpgt;
	49	/* Used to track number of TPG Port/Lun Links wrt to explict I_T Nexus shutdown */
	50	int tv_tpg_port_count;
	51	/* Used for vhost_scsi device reference to tpg_nexus, protected by tv_tpg_mutex */
	52	int tv_tpg_vhost_count;
	53	/* list for tcm_vhost_list */
	54	struct list_head tv_tpg_list;
	55	/* Used to protect access for tpg_nexus */
	56	struct mutex tv_tpg_mutex;
	57	/* Pointer to the TCM VHost I_T Nexus for this TPG endpoint */
	58	struct tcm_vhost_nexus *tpg_nexus;
	59	/* Pointer back to tcm_vhost_tport */
	60	struct tcm_vhost_tport *tport;
	61	/* Returned by tcm_vhost_make_tpg() */
	62	struct se_portal_group se_tpg;
	63	};
	64
	65	struct tcm_vhost_tport {
	66	/* SCSI protocol the tport is providing */
	67	u8 tport_proto_id;
	68	/* Binary World Wide unique Port Name for Vhost Target port */
	69	u64 tport_wwpn;
	70	/* ASCII formatted WWPN for Vhost Target port */
	71	char tport_name[TCM_VHOST_NAMELEN];
	72	/* Returned by tcm_vhost_make_tport() */
	73	struct se_wwn tport_wwn;
	74	};
	75
	76	/*
	77	* As per request from MST, keep TCM_VHOST related ioctl defines out of
	78	* linux/vhost.h (user-space) for now..
	79	*/
	80
	81	#include <linux/vhost.h>
	82
	83	/*
	84	* Used by QEMU userspace to ensure a consistent vhost-scsi ABI.
	85	*
	86	* ABI Rev 0: July 2012 version starting point for v3.6-rc merge candidate +
	87	* RFC-v2 vhost-scsi userspace. Add GET_ABI_VERSION ioctl usage
	88	*/
	89
	90	#define VHOST_SCSI_ABI_VERSION 0
	91
	92	struct vhost_scsi_target {
	93	int abi_version;
	94	char vhost_wwpn[TRANSPORT_IQN_LEN];
	95	unsigned short vhost_tpgt;
	96	unsigned short reserved;
	97	};
	98
	99	/* VHOST_SCSI specific defines */
	100	#define VHOST_SCSI_SET_ENDPOINT _IOW(VHOST_VIRTIO, 0x40, struct vhost_scsi_target)
	101	#define VHOST_SCSI_CLEAR_ENDPOINT _IOW(VHOST_VIRTIO, 0x41, struct vhost_scsi_target)
	102	/* Changing this breaks userspace. */
	103	#define VHOST_SCSI_GET_ABI_VERSION _IOW(VHOST_VIRTIO, 0x42, int)