blob: 7e9f7ab455487c1734377d7126670d4d6dd53570 [file] [log] [blame]
Nicholas Bellinger3703b2c2011-03-18 15:39:17 -07001#define TCM_LOOP_VERSION "v2.1-rc1"
2#define TL_WWN_ADDR_LEN 256
3#define TL_TPGS_PER_HBA 32
4/*
5 * Defaults for struct scsi_host_template tcm_loop_driver_template
6 *
7 * We use large can_queue and cmd_per_lun here and let TCM enforce
8 * the underlying se_device_t->queue_depth.
9 */
10#define TL_SCSI_CAN_QUEUE 1024
11#define TL_SCSI_CMD_PER_LUN 1024
12#define TL_SCSI_MAX_SECTORS 1024
13#define TL_SCSI_SG_TABLESIZE 256
14/*
15 * Used in tcm_loop_driver_probe() for struct Scsi_Host->max_cmd_len
16 */
17#define TL_SCSI_MAX_CMD_LEN 32
18
19#ifdef CONFIG_LOOPBACK_TARGET_CDB_DEBUG
20# define TL_CDB_DEBUG(x...) printk(KERN_INFO x)
21#else
22# define TL_CDB_DEBUG(x...)
23#endif
24
25struct tcm_loop_cmd {
26 /* State of Linux/SCSI CDB+Data descriptor */
27 u32 sc_cmd_state;
28 /* Pointer to the CDB+Data descriptor from Linux/SCSI subsystem */
29 struct scsi_cmnd *sc;
30 struct list_head *tl_cmd_list;
31 /* The TCM I/O descriptor that is accessed via container_of() */
32 struct se_cmd tl_se_cmd;
33 /* Sense buffer that will be mapped into outgoing status */
34 unsigned char tl_sense_buf[TRANSPORT_SENSE_BUFFER];
35};
36
37struct tcm_loop_tmr {
38 atomic_t tmr_complete;
39 wait_queue_head_t tl_tmr_wait;
40};
41
42struct tcm_loop_nexus {
43 int it_nexus_active;
44 /*
45 * Pointer to Linux/SCSI HBA from linux/include/scsi_host.h
46 */
47 struct scsi_host *sh;
48 /*
49 * Pointer to TCM session for I_T Nexus
50 */
51 struct se_session *se_sess;
52};
53
54struct tcm_loop_nacl {
55 struct se_node_acl se_node_acl;
56};
57
58struct tcm_loop_tpg {
59 unsigned short tl_tpgt;
60 atomic_t tl_tpg_port_count;
61 struct se_portal_group tl_se_tpg;
62 struct tcm_loop_hba *tl_hba;
63};
64
65struct tcm_loop_hba {
66 u8 tl_proto_id;
67 unsigned char tl_wwn_address[TL_WWN_ADDR_LEN];
68 struct se_hba_s *se_hba;
69 struct se_lun *tl_hba_lun;
70 struct se_port *tl_hba_lun_sep;
71 struct se_device_s *se_dev_hba_ptr;
72 struct tcm_loop_nexus *tl_nexus;
73 struct device dev;
74 struct Scsi_Host *sh;
75 struct tcm_loop_tpg tl_hba_tpgs[TL_TPGS_PER_HBA];
76 struct se_wwn tl_hba_wwn;
77};