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authorMichael S. Tsirkin <mst@redhat.com>2013-05-02 03:50:34 +0300
committerMichael S. Tsirkin <mst@redhat.com>2013-05-02 13:40:15 +0300
commit5012a3a384ad917b5c72a918607bd0cc64452ff8 (patch)
treed014dbbbf78f061098a757b5a67c3212ed1259c1 /drivers/vhost/scsi.c
parenteb62b74e90790dbc1aca7ea2a7161e23de7c9065 (diff)
tcm_vhost: header split up
move uapi parts to vhost.h move .c private parts to .c itself Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Asias He <asias@redhat.com> Acked-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'drivers/vhost/scsi.c')
-rw-r--r--drivers/vhost/scsi.c112
1 files changed, 104 insertions, 8 deletions
diff --git a/drivers/vhost/scsi.c b/drivers/vhost/scsi.c
index 19ca021bf88c..eb1aa56dced8 100644
--- a/drivers/vhost/scsi.c
+++ b/drivers/vhost/scsi.c
@@ -51,7 +51,110 @@
#include "vhost.c"
#include "vhost.h"
-#include "tcm_vhost.h"
+
+#define TCM_VHOST_VERSION "v0.1"
+#define TCM_VHOST_NAMELEN 256
+#define TCM_VHOST_MAX_CDB_SIZE 32
+
+struct vhost_scsi_inflight {
+ /* Wait for the flush operation to finish */
+ struct completion comp;
+ /* Refcount for the inflight reqs */
+ struct kref kref;
+};
+
+struct tcm_vhost_cmd {
+ /* Descriptor from vhost_get_vq_desc() for virt_queue segment */
+ int tvc_vq_desc;
+ /* virtio-scsi initiator task attribute */
+ int tvc_task_attr;
+ /* virtio-scsi initiator data direction */
+ enum dma_data_direction tvc_data_direction;
+ /* Expected data transfer length from virtio-scsi header */
+ u32 tvc_exp_data_len;
+ /* 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;
+ /* Pointer to vhost_virtqueue for the cmd */
+ struct vhost_virtqueue *tvc_vq;
+ /* Pointer to vhost nexus memory */
+ struct tcm_vhost_nexus *tvc_nexus;
+ /* 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 llist_node tvc_completion_list;
+ /* Used to track inflight cmd */
+ struct vhost_scsi_inflight *inflight;
+};
+
+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 vhost_scsi;
+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;
+ /* Pointer back to vhost_scsi, protected by tv_tpg_mutex */
+ struct vhost_scsi *vhost_scsi;
+};
+
+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;
+};
+
+struct tcm_vhost_evt {
+ /* event to be sent to guest */
+ struct virtio_scsi_event event;
+ /* event list, serviced from vhost worker thread */
+ struct llist_node list;
+};
enum {
VHOST_SCSI_VQ_CTL = 0,
@@ -73,13 +176,6 @@ enum {
#define VHOST_SCSI_MAX_VQ 128
#define VHOST_SCSI_MAX_EVENT 128
-struct vhost_scsi_inflight {
- /* Wait for the flush operation to finish */
- struct completion comp;
- /* Refcount for the inflight reqs */
- struct kref kref;
-};
-
struct vhost_scsi_virtqueue {
struct vhost_virtqueue vq;
/*

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