1 #ifndef ISCSI_TARGET_CORE_H
2 #define ISCSI_TARGET_CORE_H
5 #include <linux/configfs.h>
8 #include <scsi/scsi_cmnd.h>
9 #include <scsi/iscsi_proto.h>
10 #include <target/target_core_base.h>
12 #define ISCSIT_VERSION "v4.1.0"
13 #define ISCSI_MAX_DATASN_MISSING_COUNT 16
14 #define ISCSI_TX_THREAD_TCP_TIMEOUT 2
15 #define ISCSI_RX_THREAD_TCP_TIMEOUT 2
16 #define SECONDS_FOR_ASYNC_LOGOUT 10
17 #define SECONDS_FOR_ASYNC_TEXT 10
18 #define SECONDS_FOR_LOGOUT_COMP 15
19 #define WHITE_SPACE " \t\v\f\n\r"
20 #define ISCSIT_MIN_TAGS 16
21 #define ISCSIT_EXTRA_TAGS 8
22 #define ISCSIT_TCP_BACKLOG 256
24 /* struct iscsi_node_attrib sanity values */
25 #define NA_DATAOUT_TIMEOUT 3
26 #define NA_DATAOUT_TIMEOUT_MAX 60
27 #define NA_DATAOUT_TIMEOUT_MIX 2
28 #define NA_DATAOUT_TIMEOUT_RETRIES 5
29 #define NA_DATAOUT_TIMEOUT_RETRIES_MAX 15
30 #define NA_DATAOUT_TIMEOUT_RETRIES_MIN 1
31 #define NA_NOPIN_TIMEOUT 15
32 #define NA_NOPIN_TIMEOUT_MAX 60
33 #define NA_NOPIN_TIMEOUT_MIN 3
34 #define NA_NOPIN_RESPONSE_TIMEOUT 30
35 #define NA_NOPIN_RESPONSE_TIMEOUT_MAX 60
36 #define NA_NOPIN_RESPONSE_TIMEOUT_MIN 3
37 #define NA_RANDOM_DATAIN_PDU_OFFSETS 0
38 #define NA_RANDOM_DATAIN_SEQ_OFFSETS 0
39 #define NA_RANDOM_R2T_OFFSETS 0
41 /* struct iscsi_tpg_attrib sanity values */
42 #define TA_AUTHENTICATION 1
43 #define TA_LOGIN_TIMEOUT 15
44 #define TA_LOGIN_TIMEOUT_MAX 30
45 #define TA_LOGIN_TIMEOUT_MIN 5
46 #define TA_NETIF_TIMEOUT 2
47 #define TA_NETIF_TIMEOUT_MAX 15
48 #define TA_NETIF_TIMEOUT_MIN 2
49 #define TA_GENERATE_NODE_ACLS 0
50 #define TA_DEFAULT_CMDSN_DEPTH 64
51 #define TA_DEFAULT_CMDSN_DEPTH_MAX 512
52 #define TA_DEFAULT_CMDSN_DEPTH_MIN 1
53 #define TA_CACHE_DYNAMIC_ACLS 0
54 /* Enabled by default in demo mode (generic_node_acls=1) */
55 #define TA_DEMO_MODE_WRITE_PROTECT 1
56 /* Disabled by default in production mode w/ explict ACLs */
57 #define TA_PROD_MODE_WRITE_PROTECT 0
58 #define TA_DEMO_MODE_DISCOVERY 1
59 #define TA_DEFAULT_ERL 0
60 #define TA_CACHE_CORE_NPS 0
63 #define ISCSI_IOV_DATA_BUFFER 5
65 enum iscsit_transport_type {
74 /* RFC-3720 7.1.4 Standard Connection State Diagram for a Target */
75 enum target_conn_state_table {
76 TARG_CONN_STATE_FREE = 0x1,
77 TARG_CONN_STATE_XPT_UP = 0x3,
78 TARG_CONN_STATE_IN_LOGIN = 0x4,
79 TARG_CONN_STATE_LOGGED_IN = 0x5,
80 TARG_CONN_STATE_IN_LOGOUT = 0x6,
81 TARG_CONN_STATE_LOGOUT_REQUESTED = 0x7,
82 TARG_CONN_STATE_CLEANUP_WAIT = 0x8,
85 /* RFC-3720 7.3.2 Session State Diagram for a Target */
86 enum target_sess_state_table {
87 TARG_SESS_STATE_FREE = 0x1,
88 TARG_SESS_STATE_ACTIVE = 0x2,
89 TARG_SESS_STATE_LOGGED_IN = 0x3,
90 TARG_SESS_STATE_FAILED = 0x4,
91 TARG_SESS_STATE_IN_CONTINUE = 0x5,
94 /* struct iscsi_data_count->type */
95 enum data_count_type {
100 /* struct iscsi_datain_req->dr_complete */
101 enum datain_req_comp_table {
102 DATAIN_COMPLETE_NORMAL = 1,
103 DATAIN_COMPLETE_WITHIN_COMMAND_RECOVERY = 2,
104 DATAIN_COMPLETE_CONNECTION_RECOVERY = 3,
107 /* struct iscsi_datain_req->recovery */
108 enum datain_req_rec_table {
109 DATAIN_WITHIN_COMMAND_RECOVERY = 1,
110 DATAIN_CONNECTION_RECOVERY = 2,
113 /* struct iscsi_portal_group->state */
114 enum tpg_state_table {
116 TPG_STATE_ACTIVE = 1,
117 TPG_STATE_INACTIVE = 2,
118 TPG_STATE_COLD_RESET = 3,
121 /* struct iscsi_tiqn->tiqn_state */
122 enum tiqn_state_table {
123 TIQN_STATE_ACTIVE = 1,
124 TIQN_STATE_SHUTDOWN = 2,
127 /* struct iscsi_cmd->cmd_flags */
128 enum cmd_flags_table {
129 ICF_GOT_LAST_DATAOUT = 0x00000001,
130 ICF_GOT_DATACK_SNACK = 0x00000002,
131 ICF_NON_IMMEDIATE_UNSOLICITED_DATA = 0x00000004,
132 ICF_SENT_LAST_R2T = 0x00000008,
133 ICF_WITHIN_COMMAND_RECOVERY = 0x00000010,
134 ICF_CONTIG_MEMORY = 0x00000020,
135 ICF_ATTACHED_TO_RQUEUE = 0x00000040,
136 ICF_OOO_CMDSN = 0x00000080,
137 IFC_SENDTARGETS_ALL = 0x00000100,
138 IFC_SENDTARGETS_SINGLE = 0x00000200,
141 /* struct iscsi_cmd->i_state */
142 enum cmd_i_state_table {
145 ISTATE_DEFERRED_CMD = 2,
146 ISTATE_UNSOLICITED_DATA = 3,
147 ISTATE_RECEIVE_DATAOUT = 4,
148 ISTATE_RECEIVE_DATAOUT_RECOVERY = 5,
149 ISTATE_RECEIVED_LAST_DATAOUT = 6,
150 ISTATE_WITHIN_DATAOUT_RECOVERY = 7,
151 ISTATE_IN_CONNECTION_RECOVERY = 8,
152 ISTATE_RECEIVED_TASKMGT = 9,
153 ISTATE_SEND_ASYNCMSG = 10,
154 ISTATE_SENT_ASYNCMSG = 11,
155 ISTATE_SEND_DATAIN = 12,
156 ISTATE_SEND_LAST_DATAIN = 13,
157 ISTATE_SENT_LAST_DATAIN = 14,
158 ISTATE_SEND_LOGOUTRSP = 15,
159 ISTATE_SENT_LOGOUTRSP = 16,
160 ISTATE_SEND_NOPIN = 17,
161 ISTATE_SENT_NOPIN = 18,
162 ISTATE_SEND_REJECT = 19,
163 ISTATE_SENT_REJECT = 20,
164 ISTATE_SEND_R2T = 21,
165 ISTATE_SENT_R2T = 22,
166 ISTATE_SEND_R2T_RECOVERY = 23,
167 ISTATE_SENT_R2T_RECOVERY = 24,
168 ISTATE_SEND_LAST_R2T = 25,
169 ISTATE_SENT_LAST_R2T = 26,
170 ISTATE_SEND_LAST_R2T_RECOVERY = 27,
171 ISTATE_SENT_LAST_R2T_RECOVERY = 28,
172 ISTATE_SEND_STATUS = 29,
173 ISTATE_SEND_STATUS_BROKEN_PC = 30,
174 ISTATE_SENT_STATUS = 31,
175 ISTATE_SEND_STATUS_RECOVERY = 32,
176 ISTATE_SENT_STATUS_RECOVERY = 33,
177 ISTATE_SEND_TASKMGTRSP = 34,
178 ISTATE_SENT_TASKMGTRSP = 35,
179 ISTATE_SEND_TEXTRSP = 36,
180 ISTATE_SENT_TEXTRSP = 37,
181 ISTATE_SEND_NOPIN_WANT_RESPONSE = 38,
182 ISTATE_SENT_NOPIN_WANT_RESPONSE = 39,
183 ISTATE_SEND_NOPIN_NO_RESPONSE = 40,
188 /* Used for iscsi_recover_cmdsn() return values */
189 enum recover_cmdsn_ret_table {
190 CMDSN_ERROR_CANNOT_RECOVER = -1,
191 CMDSN_NORMAL_OPERATION = 0,
192 CMDSN_LOWER_THAN_EXP = 1,
193 CMDSN_HIGHER_THAN_EXP = 2,
194 CMDSN_MAXCMDSN_OVERRUN = 3,
197 /* Used for iscsi_handle_immediate_data() return values */
198 enum immedate_data_ret_table {
199 IMMEDIATE_DATA_CANNOT_RECOVER = -1,
200 IMMEDIATE_DATA_NORMAL_OPERATION = 0,
201 IMMEDIATE_DATA_ERL1_CRC_FAILURE = 1,
204 /* Used for iscsi_decide_dataout_action() return values */
205 enum dataout_action_ret_table {
206 DATAOUT_CANNOT_RECOVER = -1,
208 DATAOUT_SEND_R2T = 1,
209 DATAOUT_SEND_TO_TRANSPORT = 2,
210 DATAOUT_WITHIN_COMMAND_RECOVERY = 3,
213 /* Used for struct iscsi_node_auth->naf_flags */
214 enum naf_flags_table {
215 NAF_USERID_SET = 0x01,
216 NAF_PASSWORD_SET = 0x02,
217 NAF_USERID_IN_SET = 0x04,
218 NAF_PASSWORD_IN_SET = 0x08,
221 /* Used by various struct timer_list to manage iSCSI specific state */
222 enum iscsi_timer_flags_table {
223 ISCSI_TF_RUNNING = 0x01,
224 ISCSI_TF_STOP = 0x02,
225 ISCSI_TF_EXPIRED = 0x04,
228 /* Used for struct iscsi_np->np_flags */
229 enum np_flags_table {
230 NPF_IP_NETWORK = 0x00,
233 /* Used for struct iscsi_np->np_thread_state */
234 enum np_thread_state_table {
235 ISCSI_NP_THREAD_ACTIVE = 1,
236 ISCSI_NP_THREAD_INACTIVE = 2,
237 ISCSI_NP_THREAD_RESET = 3,
238 ISCSI_NP_THREAD_SHUTDOWN = 4,
239 ISCSI_NP_THREAD_EXIT = 5,
242 struct iscsi_conn_ops {
243 u8 HeaderDigest; /* [0,1] == [None,CRC32C] */
244 u8 DataDigest; /* [0,1] == [None,CRC32C] */
245 u32 MaxRecvDataSegmentLength; /* [512..2**24-1] */
246 u32 MaxXmitDataSegmentLength; /* [512..2**24-1] */
247 u8 OFMarker; /* [0,1] == [No,Yes] */
248 u8 IFMarker; /* [0,1] == [No,Yes] */
249 u32 OFMarkInt; /* [1..65535] */
250 u32 IFMarkInt; /* [1..65535] */
252 * iSER specific connection parameters
254 u32 InitiatorRecvDataSegmentLength; /* [512..2**24-1] */
255 u32 TargetRecvDataSegmentLength; /* [512..2**24-1] */
258 struct iscsi_sess_ops {
259 char InitiatorName[224];
260 char InitiatorAlias[256];
261 char TargetName[224];
262 char TargetAlias[256];
263 char TargetAddress[256];
264 u16 TargetPortalGroupTag; /* [0..65535] */
265 u16 MaxConnections; /* [1..65535] */
266 u8 InitialR2T; /* [0,1] == [No,Yes] */
267 u8 ImmediateData; /* [0,1] == [No,Yes] */
268 u32 MaxBurstLength; /* [512..2**24-1] */
269 u32 FirstBurstLength; /* [512..2**24-1] */
270 u16 DefaultTime2Wait; /* [0..3600] */
271 u16 DefaultTime2Retain; /* [0..3600] */
272 u16 MaxOutstandingR2T; /* [1..65535] */
273 u8 DataPDUInOrder; /* [0,1] == [No,Yes] */
274 u8 DataSequenceInOrder; /* [0,1] == [No,Yes] */
275 u8 ErrorRecoveryLevel; /* [0..2] */
276 u8 SessionType; /* [0,1] == [Normal,Discovery]*/
278 * iSER specific session parameters
280 u8 RDMAExtensions; /* [0,1] == [No,Yes] */
283 struct iscsi_queue_req {
285 struct iscsi_cmd *cmd;
286 struct list_head qr_list;
289 struct iscsi_data_count {
291 int sync_and_steering;
292 enum data_count_type type;
299 struct iscsi_param_list {
301 struct list_head param_list;
302 struct list_head extra_response_list;
305 struct iscsi_datain_req {
306 enum datain_req_comp_table dr_complete;
307 int generate_recovery_values;
308 enum datain_req_rec_table recovery;
317 struct list_head cmd_datain_node;
318 } ____cacheline_aligned;
320 struct iscsi_ooo_cmdsn {
325 struct iscsi_cmd *cmd;
326 struct list_head ooo_list;
327 } ____cacheline_aligned;
329 struct iscsi_datain {
334 } ____cacheline_aligned;
344 struct list_head r2t_list;
345 } ____cacheline_aligned;
348 enum iscsi_timer_flags_table dataout_timer_flags;
349 /* DataOUT timeout retries */
350 u8 dataout_timeout_retries;
351 /* Within command recovery count */
352 u8 error_recovery_count;
353 /* iSCSI dependent state for out or order CmdSNs */
354 enum cmd_i_state_table deferred_i_state;
355 /* iSCSI dependent state */
356 enum cmd_i_state_table i_state;
357 /* Command is an immediate command (ISCSI_OP_IMMEDIATE set) */
359 /* Immediate data present */
363 /* iSCSI Response Code */
365 /* Logout reason when iscsi_opcode == ISCSI_INIT_LOGOUT_CMND */
367 /* Logout response code when iscsi_opcode == ISCSI_INIT_LOGOUT_CMND */
369 /* MaxCmdSN has been incremented */
371 /* Immediate Unsolicited Dataout */
373 /* Reject reason code */
375 /* CID contained in logout PDU when opcode == ISCSI_INIT_LOGOUT_CMND */
378 enum cmd_flags_table cmd_flags;
379 /* Initiator Task Tag assigned from Initiator */
381 /* Target Transfer Tag assigned from Target */
383 /* CmdSN assigned from Initiator */
385 /* ExpStatSN assigned from Initiator */
387 /* StatSN assigned to this ITT */
393 /* Last DataSN acknowledged via DataAck SNACK */
395 /* Used for echoing NOPOUT ping data */
397 /* Used to store DataDigest */
399 /* Counter for MaxOutstandingR2T */
400 u32 outstanding_r2ts;
401 /* Next R2T Offset when DataSequenceInOrder=Yes */
403 /* Iovec current and orig count for iscsi_cmd->iov_data */
405 u32 orig_iov_data_count;
406 /* Number of miscellaneous iovecs used for IP stack calls */
408 /* Number of struct iscsi_pdu in struct iscsi_cmd->pdu_list */
410 /* Next struct iscsi_pdu to send in struct iscsi_cmd->pdu_list */
412 /* Current struct iscsi_pdu in struct iscsi_cmd->pdu_list */
414 /* Next struct iscsi_seq to send in struct iscsi_cmd->seq_list */
416 /* Number of struct iscsi_seq in struct iscsi_cmd->seq_list */
418 /* Current struct iscsi_seq in struct iscsi_cmd->seq_list */
420 /* Lowest offset in current DataOUT sequence */
421 u32 seq_start_offset;
422 /* Highest offset in current DataOUT sequence */
424 /* Total size in bytes received so far of READ data */
426 /* Total size in bytes received so far of WRITE data */
428 /* Counter for FirstBurstLength key */
430 /* Counter for MaxBurstLength key */
432 /* Transfer size used for IP stack calls */
434 /* Buffer used for various purposes */
436 /* Used by SendTargets=[iqn.,eui.] discovery */
438 /* See include/linux/dma-mapping.h */
439 enum dma_data_direction data_direction;
440 /* iSCSI PDU Header + CRC */
441 unsigned char pdu[ISCSI_HDR_LEN + ISCSI_CRC_LEN];
442 /* Number of times struct iscsi_cmd is present in immediate queue */
443 atomic_t immed_queue_count;
444 atomic_t response_queue_count;
445 spinlock_t datain_lock;
446 spinlock_t dataout_timeout_lock;
447 /* spinlock for protecting struct iscsi_cmd->i_state */
448 spinlock_t istate_lock;
449 /* spinlock for adding within command recovery entries */
450 spinlock_t error_lock;
451 /* spinlock for adding R2Ts */
454 struct list_head datain_list;
456 struct list_head cmd_r2t_list;
457 /* Timer for DataOUT */
458 struct timer_list dataout_timer;
459 /* Iovecs for SCSI data payload RX/TX w/ kernel level sockets */
460 struct kvec *iov_data;
461 /* Iovecs for miscellaneous purposes */
462 #define ISCSI_MISC_IOVECS 5
463 struct kvec iov_misc[ISCSI_MISC_IOVECS];
464 /* Array of struct iscsi_pdu used for DataPDUInOrder=No */
465 struct iscsi_pdu *pdu_list;
466 /* Current struct iscsi_pdu used for DataPDUInOrder=No */
467 struct iscsi_pdu *pdu_ptr;
468 /* Array of struct iscsi_seq used for DataSequenceInOrder=No */
469 struct iscsi_seq *seq_list;
470 /* Current struct iscsi_seq used for DataSequenceInOrder=No */
471 struct iscsi_seq *seq_ptr;
472 /* TMR Request when iscsi_opcode == ISCSI_OP_SCSI_TMFUNC */
473 struct iscsi_tmr_req *tmr_req;
474 /* Connection this command is alligient to */
475 struct iscsi_conn *conn;
476 /* Pointer to connection recovery entry */
477 struct iscsi_conn_recovery *cr;
478 /* Session the command is part of, used for connection recovery */
479 struct iscsi_session *sess;
480 /* list_head for connection list */
481 struct list_head i_conn_node;
482 /* The TCM I/O descriptor that is accessed via container_of() */
483 struct se_cmd se_cmd;
484 /* Sense buffer that will be mapped into outgoing status */
485 #define ISCSI_SENSE_BUFFER_LEN (TRANSPORT_SENSE_BUFFER + 2)
486 unsigned char sense_buffer[ISCSI_SENSE_BUFFER_LEN];
491 struct scatterlist *first_data_sg;
492 u32 first_data_sg_off;
494 sense_reason_t sense_reason;
495 } ____cacheline_aligned;
497 struct iscsi_tmr_req {
498 bool task_reassign:1;
500 struct iscsi_cmd *ref_cmd;
501 struct iscsi_conn_recovery *conn_recovery;
502 struct se_tmr_req *se_tmr_req;
506 wait_queue_head_t queues_wq;
507 /* Authentication Successful for this connection */
509 /* State connection is currently in */
511 u8 conn_logout_reason;
512 u8 network_transport;
513 enum iscsi_timer_flags_table nopin_timer_flags;
514 enum iscsi_timer_flags_table nopin_response_timer_flags;
515 /* Used to know what thread encountered a transport failure */
517 /* connection id assigned by the Initiator */
519 /* Remote TCP Port */
526 /* Used for iscsi_tx_login_rsp() */
529 /* Per connection status sequence number */
531 /* IFMarkInt's Current Value */
533 /* OFMarkInt's Current Value */
535 /* Used for calculating OFMarker offset to next PDU */
536 u32 of_marker_offset;
537 #define IPV6_ADDRESS_SPACE 48
538 unsigned char login_ip[IPV6_ADDRESS_SPACE];
539 unsigned char local_ip[IPV6_ADDRESS_SPACE];
540 int conn_usage_count;
541 int conn_waiting_on_uc;
542 atomic_t check_immediate_queue;
543 atomic_t conn_logout_remove;
544 atomic_t connection_exit;
545 atomic_t connection_recovery;
546 atomic_t connection_reinstatement;
547 atomic_t connection_wait_rcfr;
548 atomic_t sleep_on_conn_wait_comp;
549 atomic_t transport_failed;
550 struct completion conn_post_wait_comp;
551 struct completion conn_wait_comp;
552 struct completion conn_wait_rcfr_comp;
553 struct completion conn_waiting_on_uc_comp;
554 struct completion conn_logout_comp;
555 struct completion tx_half_close_comp;
556 struct completion rx_half_close_comp;
557 /* socket used by this connection */
559 void (*orig_data_ready)(struct sock *);
560 void (*orig_state_change)(struct sock *);
561 #define LOGIN_FLAGS_READ_ACTIVE 1
562 #define LOGIN_FLAGS_CLOSED 2
563 #define LOGIN_FLAGS_READY 4
564 unsigned long login_flags;
565 struct delayed_work login_work;
566 struct delayed_work login_cleanup_work;
567 struct iscsi_login *login;
568 struct timer_list nopin_timer;
569 struct timer_list nopin_response_timer;
570 struct timer_list transport_timer;
571 struct task_struct *login_kworker;
572 /* Spinlock used for add/deleting cmd's from conn_cmd_list */
574 spinlock_t conn_usage_lock;
575 spinlock_t immed_queue_lock;
576 spinlock_t nopin_timer_lock;
577 spinlock_t response_queue_lock;
578 spinlock_t state_lock;
579 /* libcrypto RX and TX contexts for crc32c */
580 struct hash_desc conn_rx_hash;
581 struct hash_desc conn_tx_hash;
582 /* Used for scheduling TX and RX connection kthreads */
583 cpumask_var_t conn_cpumask;
584 unsigned int conn_rx_reset_cpumask:1;
585 unsigned int conn_tx_reset_cpumask:1;
586 /* list_head of struct iscsi_cmd for this connection */
587 struct list_head conn_cmd_list;
588 struct list_head immed_queue_list;
589 struct list_head response_queue_list;
590 struct iscsi_conn_ops *conn_ops;
591 struct iscsi_login *conn_login;
592 struct iscsit_transport *conn_transport;
593 struct iscsi_param_list *param_list;
594 /* Used for per connection auth state machine */
597 struct iscsi_login_thread_s *login_thread;
598 struct iscsi_portal_group *tpg;
599 struct iscsi_tpg_np *tpg_np;
600 /* Pointer to parent session */
601 struct iscsi_session *sess;
602 /* Pointer to thread_set in use for this conn's threads */
603 struct iscsi_thread_set *thread_set;
604 /* list_head for session connection list */
605 struct list_head conn_list;
606 } ____cacheline_aligned;
608 struct iscsi_conn_recovery {
611 u32 maxrecvdatasegmentlength;
612 u32 maxxmitdatasegmentlength;
613 int ready_for_reallegiance;
614 struct list_head conn_recovery_cmd_list;
615 spinlock_t conn_recovery_cmd_lock;
616 struct timer_list time2retain_timer;
617 struct iscsi_session *sess;
618 struct list_head cr_list;
619 } ____cacheline_aligned;
621 struct iscsi_session {
624 enum iscsi_timer_flags_table time2retain_timer_flags;
627 u16 conn_recovery_count;
629 /* state session is currently in */
631 /* session wide counter: initiator assigned task tag */
633 /* session wide counter: target assigned task tag */
637 /* protects cmdsn values */
638 struct mutex cmdsn_mutex;
639 /* session wide counter: expected command sequence number */
641 /* session wide counter: maximum allowed command sequence number */
643 struct list_head sess_ooo_cmdsn_list;
645 /* LIO specific session ID */
648 /* unique within the target */
650 /* Used for session reference counting */
651 int session_usage_count;
652 int session_waiting_on_uc;
653 atomic_long_t cmd_pdus;
654 atomic_long_t rsp_pdus;
655 atomic_long_t tx_data_octets;
656 atomic_long_t rx_data_octets;
657 atomic_long_t conn_digest_errors;
658 atomic_long_t conn_timeout_errors;
660 /* Number of active connections */
662 atomic_t session_continuation;
663 atomic_t session_fall_back_to_erl0;
664 atomic_t session_logout;
665 atomic_t session_reinstatement;
666 atomic_t session_stop_active;
667 atomic_t sleep_on_sess_wait_comp;
668 /* connection list */
669 struct list_head sess_conn_list;
670 struct list_head cr_active_list;
671 struct list_head cr_inactive_list;
672 spinlock_t conn_lock;
673 spinlock_t cr_a_lock;
674 spinlock_t cr_i_lock;
675 spinlock_t session_usage_lock;
677 struct completion async_msg_comp;
678 struct completion reinstatement_comp;
679 struct completion session_wait_comp;
680 struct completion session_waiting_on_uc_comp;
681 struct timer_list time2retain_timer;
682 struct iscsi_sess_ops *sess_ops;
683 struct se_session *se_sess;
684 struct iscsi_portal_group *tpg;
685 } ____cacheline_aligned;
689 u8 checked_for_existing;
691 u8 leading_connection;
701 u32 initial_exp_statsn;
705 char req[ISCSI_HDR_LEN];
706 char rsp[ISCSI_HDR_LEN];
709 struct iscsi_conn *conn;
711 } ____cacheline_aligned;
713 struct iscsi_node_attrib {
715 u32 dataout_timeout_retries;
718 u32 nopin_response_timeout;
719 u32 random_datain_pdu_offsets;
720 u32 random_datain_seq_offsets;
721 u32 random_r2t_offsets;
724 struct iscsi_node_acl *nacl;
727 struct se_dev_entry_s;
729 struct iscsi_node_auth {
730 enum naf_flags_table naf_flags;
731 int authenticate_target;
732 /* Used for iscsit_global->discovery_auth,
733 * set to zero (auth disabled) by default */
734 int enforce_discovery_auth;
735 #define MAX_USER_LEN 256
736 #define MAX_PASS_LEN 256
737 char userid[MAX_USER_LEN];
738 char password[MAX_PASS_LEN];
739 char userid_mutual[MAX_USER_LEN];
740 char password_mutual[MAX_PASS_LEN];
743 #include "iscsi_target_stat.h"
745 struct iscsi_node_stat_grps {
746 struct config_group iscsi_sess_stats_group;
747 struct config_group iscsi_conn_stats_group;
750 struct iscsi_node_acl {
751 struct iscsi_node_attrib node_attrib;
752 struct iscsi_node_auth node_auth;
753 struct iscsi_node_stat_grps node_stat_grps;
754 struct se_node_acl se_node_acl;
757 struct iscsi_tpg_attrib {
761 u32 generate_node_acls;
762 u32 cache_dynamic_acls;
763 u32 default_cmdsn_depth;
764 u32 demo_mode_write_protect;
765 u32 prod_mode_write_protect;
766 u32 demo_mode_discovery;
768 struct iscsi_portal_group *tpg;
772 int np_network_transport;
775 enum np_thread_state_table np_thread_state;
776 enum iscsi_timer_flags_table np_login_timer_flags;
778 enum np_flags_table np_flags;
779 unsigned char np_ip[IPV6_ADDRESS_SPACE];
781 spinlock_t np_thread_lock;
782 struct completion np_restart_comp;
783 struct socket *np_socket;
784 struct __kernel_sockaddr_storage np_sockaddr;
785 struct task_struct *np_thread;
786 struct timer_list np_login_timer;
788 struct iscsit_transport *np_transport;
789 struct list_head np_list;
790 } ____cacheline_aligned;
792 struct iscsi_tpg_np {
793 struct iscsi_np *tpg_np;
794 struct iscsi_portal_group *tpg;
795 struct iscsi_tpg_np *tpg_np_parent;
796 struct list_head tpg_np_list;
797 struct list_head tpg_np_child_list;
798 struct list_head tpg_np_parent_list;
799 struct se_tpg_np se_tpg_np;
800 spinlock_t tpg_np_parent_lock;
801 struct completion tpg_np_comp;
802 struct kref tpg_np_kref;
805 struct iscsi_portal_group {
806 unsigned char tpg_chap_id;
808 enum tpg_state_table tpg_state;
809 /* Target Portal Group Tag */
811 /* Id assigned to target sessions */
813 /* Number of active sessions */
815 /* Number of Network Portals available for this TPG */
817 /* Per TPG LIO specific session ID. */
819 /* Spinlock for adding/removing Network Portals */
820 spinlock_t tpg_np_lock;
821 spinlock_t tpg_state_lock;
822 struct se_portal_group tpg_se_tpg;
823 struct mutex tpg_access_lock;
824 struct semaphore np_login_sem;
825 struct iscsi_tpg_attrib tpg_attrib;
826 struct iscsi_node_auth tpg_demo_auth;
827 /* Pointer to default list of iSCSI parameters for TPG */
828 struct iscsi_param_list *param_list;
829 struct iscsi_tiqn *tpg_tiqn;
830 struct list_head tpg_gnp_list;
831 struct list_head tpg_list;
832 } ____cacheline_aligned;
834 struct iscsi_wwn_stat_grps {
835 struct config_group iscsi_stat_group;
836 struct config_group iscsi_instance_group;
837 struct config_group iscsi_sess_err_group;
838 struct config_group iscsi_tgt_attr_group;
839 struct config_group iscsi_login_stats_group;
840 struct config_group iscsi_logout_stats_group;
844 #define ISCSI_IQN_LEN 224
845 unsigned char tiqn[ISCSI_IQN_LEN];
846 enum tiqn_state_table tiqn_state;
847 int tiqn_access_count;
848 u32 tiqn_active_tpgs;
850 u32 tiqn_num_tpg_nps;
852 struct list_head tiqn_list;
853 struct list_head tiqn_tpg_list;
854 spinlock_t tiqn_state_lock;
855 spinlock_t tiqn_tpg_lock;
856 struct se_wwn tiqn_wwn;
857 struct iscsi_wwn_stat_grps tiqn_stat_grps;
859 struct iscsi_sess_err_stats sess_err_stats;
860 struct iscsi_login_stats login_stats;
861 struct iscsi_logout_stats logout_stats;
862 } ____cacheline_aligned;
864 struct iscsit_global {
865 /* In core shutdown */
868 /* Unique identifier used for the authentication daemon */
871 /* Thread Set bitmap count */
873 /* Thread Set bitmap pointer */
874 unsigned long *ts_bitmap;
875 /* Used for iSCSI discovery session authentication */
876 struct iscsi_node_acl discovery_acl;
877 struct iscsi_portal_group *discovery_tpg;
880 #endif /* ISCSI_TARGET_CORE_H */