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[linux.git] / drivers / target / loopback / tcm_loop.h
1 #include <linux/types.h>
2 #include <linux/device.h>
3 #include <target/target_core_base.h> /* struct se_cmd */
4
5 #define TCM_LOOP_VERSION                "v2.1-rc2"
6 #define TL_WWN_ADDR_LEN                 256
7 #define TL_TPGS_PER_HBA                 32
8
9 struct tcm_loop_cmd {
10         /* State of Linux/SCSI CDB+Data descriptor */
11         u32 sc_cmd_state;
12         /* Tagged command queueing */
13         u32 sc_cmd_tag;
14         /* Pointer to the CDB+Data descriptor from Linux/SCSI subsystem */
15         struct scsi_cmnd *sc;
16         /* The TCM I/O descriptor that is accessed via container_of() */
17         struct se_cmd tl_se_cmd;
18         struct work_struct work;
19         /* Sense buffer that will be mapped into outgoing status */
20         unsigned char tl_sense_buf[TRANSPORT_SENSE_BUFFER];
21 };
22
23 struct tcm_loop_tmr {
24         atomic_t tmr_complete;
25         wait_queue_head_t tl_tmr_wait;
26 };
27
28 struct tcm_loop_nexus {
29         /*
30          * Pointer to TCM session for I_T Nexus
31          */
32         struct se_session *se_sess;
33 };
34
35 #define TCM_TRANSPORT_ONLINE 0
36 #define TCM_TRANSPORT_OFFLINE 1
37
38 struct tcm_loop_tpg {
39         unsigned short tl_tpgt;
40         unsigned short tl_transport_status;
41         enum target_prot_type tl_fabric_prot_type;
42         atomic_t tl_tpg_port_count;
43         struct se_portal_group tl_se_tpg;
44         struct tcm_loop_hba *tl_hba;
45         struct tcm_loop_nexus *tl_nexus;
46 };
47
48 struct tcm_loop_hba {
49         u8 tl_proto_id;
50         unsigned char tl_wwn_address[TL_WWN_ADDR_LEN];
51         struct se_hba_s *se_hba;
52         struct se_lun *tl_hba_lun;
53         struct se_port *tl_hba_lun_sep;
54         struct device dev;
55         struct Scsi_Host *sh;
56         struct tcm_loop_tpg tl_hba_tpgs[TL_TPGS_PER_HBA];
57         struct se_wwn tl_hba_wwn;
58 };
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