1 #ifndef ISCSI_TARGET_CORE_H
2 #define ISCSI_TARGET_CORE_H
5 #include <linux/configfs.h>
8 #include <scsi/iscsi_proto.h>
9 #include <target/target_core_base.h>
11 #define ISCSIT_VERSION "v4.1.0"
12 #define ISCSI_MAX_DATASN_MISSING_COUNT 16
13 #define ISCSI_TX_THREAD_TCP_TIMEOUT 2
14 #define ISCSI_RX_THREAD_TCP_TIMEOUT 2
15 #define SECONDS_FOR_ASYNC_LOGOUT 10
16 #define SECONDS_FOR_ASYNC_TEXT 10
17 #define SECONDS_FOR_LOGOUT_COMP 15
18 #define WHITE_SPACE " \t\v\f\n\r"
19 #define ISCSIT_MIN_TAGS 16
20 #define ISCSIT_EXTRA_TAGS 8
21 #define ISCSIT_TCP_BACKLOG 256
22 #define ISCSI_RX_THREAD_NAME "iscsi_trx"
23 #define ISCSI_TX_THREAD_NAME "iscsi_ttx"
25 /* struct iscsi_node_attrib sanity values */
26 #define NA_DATAOUT_TIMEOUT 3
27 #define NA_DATAOUT_TIMEOUT_MAX 60
28 #define NA_DATAOUT_TIMEOUT_MIX 2
29 #define NA_DATAOUT_TIMEOUT_RETRIES 5
30 #define NA_DATAOUT_TIMEOUT_RETRIES_MAX 15
31 #define NA_DATAOUT_TIMEOUT_RETRIES_MIN 1
32 #define NA_NOPIN_TIMEOUT 15
33 #define NA_NOPIN_TIMEOUT_MAX 60
34 #define NA_NOPIN_TIMEOUT_MIN 3
35 #define NA_NOPIN_RESPONSE_TIMEOUT 30
36 #define NA_NOPIN_RESPONSE_TIMEOUT_MAX 60
37 #define NA_NOPIN_RESPONSE_TIMEOUT_MIN 3
38 #define NA_RANDOM_DATAIN_PDU_OFFSETS 0
39 #define NA_RANDOM_DATAIN_SEQ_OFFSETS 0
40 #define NA_RANDOM_R2T_OFFSETS 0
42 /* struct iscsi_tpg_attrib sanity values */
43 #define TA_AUTHENTICATION 1
44 #define TA_LOGIN_TIMEOUT 15
45 #define TA_LOGIN_TIMEOUT_MAX 30
46 #define TA_LOGIN_TIMEOUT_MIN 5
47 #define TA_NETIF_TIMEOUT 2
48 #define TA_NETIF_TIMEOUT_MAX 15
49 #define TA_NETIF_TIMEOUT_MIN 2
50 #define TA_GENERATE_NODE_ACLS 0
51 #define TA_DEFAULT_CMDSN_DEPTH 64
52 #define TA_DEFAULT_CMDSN_DEPTH_MAX 512
53 #define TA_DEFAULT_CMDSN_DEPTH_MIN 1
54 #define TA_CACHE_DYNAMIC_ACLS 0
55 /* Enabled by default in demo mode (generic_node_acls=1) */
56 #define TA_DEMO_MODE_WRITE_PROTECT 1
57 /* Disabled by default in production mode w/ explict ACLs */
58 #define TA_PROD_MODE_WRITE_PROTECT 0
59 #define TA_DEMO_MODE_DISCOVERY 1
60 #define TA_DEFAULT_ERL 0
61 #define TA_CACHE_CORE_NPS 0
62 /* T10 protection information disabled by default */
63 #define TA_DEFAULT_T10_PI 0
64 #define TA_DEFAULT_FABRIC_PROT_TYPE 0
65 /* TPG status needs to be enabled to return sendtargets discovery endpoint info */
66 #define TA_DEFAULT_TPG_ENABLED_SENDTARGETS 1
68 * Used to control the sending of keys with optional to respond state bit,
69 * as a workaround for non RFC compliant initiators,that do not propose,
70 * nor respond to specific keys required for login to complete.
72 * See iscsi_check_proposer_for_optional_reply() for more details.
74 #define TA_DEFAULT_LOGIN_KEYS_WORKAROUND 1
76 #define ISCSI_IOV_DATA_BUFFER 5
78 enum iscsit_transport_type {
87 /* RFC-3720 7.1.4 Standard Connection State Diagram for a Target */
88 enum target_conn_state_table {
89 TARG_CONN_STATE_FREE = 0x1,
90 TARG_CONN_STATE_XPT_UP = 0x3,
91 TARG_CONN_STATE_IN_LOGIN = 0x4,
92 TARG_CONN_STATE_LOGGED_IN = 0x5,
93 TARG_CONN_STATE_IN_LOGOUT = 0x6,
94 TARG_CONN_STATE_LOGOUT_REQUESTED = 0x7,
95 TARG_CONN_STATE_CLEANUP_WAIT = 0x8,
98 /* RFC-3720 7.3.2 Session State Diagram for a Target */
99 enum target_sess_state_table {
100 TARG_SESS_STATE_FREE = 0x1,
101 TARG_SESS_STATE_ACTIVE = 0x2,
102 TARG_SESS_STATE_LOGGED_IN = 0x3,
103 TARG_SESS_STATE_FAILED = 0x4,
104 TARG_SESS_STATE_IN_CONTINUE = 0x5,
107 /* struct iscsi_data_count->type */
108 enum data_count_type {
113 /* struct iscsi_datain_req->dr_complete */
114 enum datain_req_comp_table {
115 DATAIN_COMPLETE_NORMAL = 1,
116 DATAIN_COMPLETE_WITHIN_COMMAND_RECOVERY = 2,
117 DATAIN_COMPLETE_CONNECTION_RECOVERY = 3,
120 /* struct iscsi_datain_req->recovery */
121 enum datain_req_rec_table {
122 DATAIN_WITHIN_COMMAND_RECOVERY = 1,
123 DATAIN_CONNECTION_RECOVERY = 2,
126 /* struct iscsi_portal_group->state */
127 enum tpg_state_table {
129 TPG_STATE_ACTIVE = 1,
130 TPG_STATE_INACTIVE = 2,
131 TPG_STATE_COLD_RESET = 3,
134 /* struct iscsi_tiqn->tiqn_state */
135 enum tiqn_state_table {
136 TIQN_STATE_ACTIVE = 1,
137 TIQN_STATE_SHUTDOWN = 2,
140 /* struct iscsi_cmd->cmd_flags */
141 enum cmd_flags_table {
142 ICF_GOT_LAST_DATAOUT = 0x00000001,
143 ICF_GOT_DATACK_SNACK = 0x00000002,
144 ICF_NON_IMMEDIATE_UNSOLICITED_DATA = 0x00000004,
145 ICF_SENT_LAST_R2T = 0x00000008,
146 ICF_WITHIN_COMMAND_RECOVERY = 0x00000010,
147 ICF_CONTIG_MEMORY = 0x00000020,
148 ICF_ATTACHED_TO_RQUEUE = 0x00000040,
149 ICF_OOO_CMDSN = 0x00000080,
150 ICF_SENDTARGETS_ALL = 0x00000100,
151 ICF_SENDTARGETS_SINGLE = 0x00000200,
154 /* struct iscsi_cmd->i_state */
155 enum cmd_i_state_table {
158 ISTATE_DEFERRED_CMD = 2,
159 ISTATE_UNSOLICITED_DATA = 3,
160 ISTATE_RECEIVE_DATAOUT = 4,
161 ISTATE_RECEIVE_DATAOUT_RECOVERY = 5,
162 ISTATE_RECEIVED_LAST_DATAOUT = 6,
163 ISTATE_WITHIN_DATAOUT_RECOVERY = 7,
164 ISTATE_IN_CONNECTION_RECOVERY = 8,
165 ISTATE_RECEIVED_TASKMGT = 9,
166 ISTATE_SEND_ASYNCMSG = 10,
167 ISTATE_SENT_ASYNCMSG = 11,
168 ISTATE_SEND_DATAIN = 12,
169 ISTATE_SEND_LAST_DATAIN = 13,
170 ISTATE_SENT_LAST_DATAIN = 14,
171 ISTATE_SEND_LOGOUTRSP = 15,
172 ISTATE_SENT_LOGOUTRSP = 16,
173 ISTATE_SEND_NOPIN = 17,
174 ISTATE_SENT_NOPIN = 18,
175 ISTATE_SEND_REJECT = 19,
176 ISTATE_SENT_REJECT = 20,
177 ISTATE_SEND_R2T = 21,
178 ISTATE_SENT_R2T = 22,
179 ISTATE_SEND_R2T_RECOVERY = 23,
180 ISTATE_SENT_R2T_RECOVERY = 24,
181 ISTATE_SEND_LAST_R2T = 25,
182 ISTATE_SENT_LAST_R2T = 26,
183 ISTATE_SEND_LAST_R2T_RECOVERY = 27,
184 ISTATE_SENT_LAST_R2T_RECOVERY = 28,
185 ISTATE_SEND_STATUS = 29,
186 ISTATE_SEND_STATUS_BROKEN_PC = 30,
187 ISTATE_SENT_STATUS = 31,
188 ISTATE_SEND_STATUS_RECOVERY = 32,
189 ISTATE_SENT_STATUS_RECOVERY = 33,
190 ISTATE_SEND_TASKMGTRSP = 34,
191 ISTATE_SENT_TASKMGTRSP = 35,
192 ISTATE_SEND_TEXTRSP = 36,
193 ISTATE_SENT_TEXTRSP = 37,
194 ISTATE_SEND_NOPIN_WANT_RESPONSE = 38,
195 ISTATE_SENT_NOPIN_WANT_RESPONSE = 39,
196 ISTATE_SEND_NOPIN_NO_RESPONSE = 40,
201 /* Used for iscsi_recover_cmdsn() return values */
202 enum recover_cmdsn_ret_table {
203 CMDSN_ERROR_CANNOT_RECOVER = -1,
204 CMDSN_NORMAL_OPERATION = 0,
205 CMDSN_LOWER_THAN_EXP = 1,
206 CMDSN_HIGHER_THAN_EXP = 2,
207 CMDSN_MAXCMDSN_OVERRUN = 3,
210 /* Used for iscsi_handle_immediate_data() return values */
211 enum immedate_data_ret_table {
212 IMMEDIATE_DATA_CANNOT_RECOVER = -1,
213 IMMEDIATE_DATA_NORMAL_OPERATION = 0,
214 IMMEDIATE_DATA_ERL1_CRC_FAILURE = 1,
217 /* Used for iscsi_decide_dataout_action() return values */
218 enum dataout_action_ret_table {
219 DATAOUT_CANNOT_RECOVER = -1,
221 DATAOUT_SEND_R2T = 1,
222 DATAOUT_SEND_TO_TRANSPORT = 2,
223 DATAOUT_WITHIN_COMMAND_RECOVERY = 3,
226 /* Used for struct iscsi_node_auth->naf_flags */
227 enum naf_flags_table {
228 NAF_USERID_SET = 0x01,
229 NAF_PASSWORD_SET = 0x02,
230 NAF_USERID_IN_SET = 0x04,
231 NAF_PASSWORD_IN_SET = 0x08,
234 /* Used by various struct timer_list to manage iSCSI specific state */
235 enum iscsi_timer_flags_table {
236 ISCSI_TF_RUNNING = 0x01,
237 ISCSI_TF_STOP = 0x02,
238 ISCSI_TF_EXPIRED = 0x04,
241 /* Used for struct iscsi_np->np_flags */
242 enum np_flags_table {
243 NPF_IP_NETWORK = 0x00,
246 /* Used for struct iscsi_np->np_thread_state */
247 enum np_thread_state_table {
248 ISCSI_NP_THREAD_ACTIVE = 1,
249 ISCSI_NP_THREAD_INACTIVE = 2,
250 ISCSI_NP_THREAD_RESET = 3,
251 ISCSI_NP_THREAD_SHUTDOWN = 4,
252 ISCSI_NP_THREAD_EXIT = 5,
255 struct iscsi_conn_ops {
256 u8 HeaderDigest; /* [0,1] == [None,CRC32C] */
257 u8 DataDigest; /* [0,1] == [None,CRC32C] */
258 u32 MaxRecvDataSegmentLength; /* [512..2**24-1] */
259 u32 MaxXmitDataSegmentLength; /* [512..2**24-1] */
261 * iSER specific connection parameters
263 u32 InitiatorRecvDataSegmentLength; /* [512..2**24-1] */
264 u32 TargetRecvDataSegmentLength; /* [512..2**24-1] */
267 struct iscsi_sess_ops {
268 char InitiatorName[224];
269 char InitiatorAlias[256];
270 char TargetName[224];
271 char TargetAlias[256];
272 char TargetAddress[256];
273 u16 TargetPortalGroupTag; /* [0..65535] */
274 u16 MaxConnections; /* [1..65535] */
275 u8 InitialR2T; /* [0,1] == [No,Yes] */
276 u8 ImmediateData; /* [0,1] == [No,Yes] */
277 u32 MaxBurstLength; /* [512..2**24-1] */
278 u32 FirstBurstLength; /* [512..2**24-1] */
279 u16 DefaultTime2Wait; /* [0..3600] */
280 u16 DefaultTime2Retain; /* [0..3600] */
281 u16 MaxOutstandingR2T; /* [1..65535] */
282 u8 DataPDUInOrder; /* [0,1] == [No,Yes] */
283 u8 DataSequenceInOrder; /* [0,1] == [No,Yes] */
284 u8 ErrorRecoveryLevel; /* [0..2] */
285 u8 SessionType; /* [0,1] == [Normal,Discovery]*/
287 * iSER specific session parameters
289 u8 RDMAExtensions; /* [0,1] == [No,Yes] */
292 struct iscsi_queue_req {
294 struct iscsi_cmd *cmd;
295 struct list_head qr_list;
298 struct iscsi_data_count {
300 int sync_and_steering;
301 enum data_count_type type;
308 struct iscsi_param_list {
310 struct list_head param_list;
311 struct list_head extra_response_list;
314 struct iscsi_datain_req {
315 enum datain_req_comp_table dr_complete;
316 int generate_recovery_values;
317 enum datain_req_rec_table recovery;
326 struct list_head cmd_datain_node;
327 } ____cacheline_aligned;
329 struct iscsi_ooo_cmdsn {
334 struct iscsi_cmd *cmd;
335 struct list_head ooo_list;
336 } ____cacheline_aligned;
338 struct iscsi_datain {
343 } ____cacheline_aligned;
353 struct list_head r2t_list;
354 } ____cacheline_aligned;
357 enum iscsi_timer_flags_table dataout_timer_flags;
358 /* DataOUT timeout retries */
359 u8 dataout_timeout_retries;
360 /* Within command recovery count */
361 u8 error_recovery_count;
362 /* iSCSI dependent state for out or order CmdSNs */
363 enum cmd_i_state_table deferred_i_state;
364 /* iSCSI dependent state */
365 enum cmd_i_state_table i_state;
366 /* Command is an immediate command (ISCSI_OP_IMMEDIATE set) */
368 /* Immediate data present */
372 /* iSCSI Response Code */
374 /* Logout reason when iscsi_opcode == ISCSI_INIT_LOGOUT_CMND */
376 /* Logout response code when iscsi_opcode == ISCSI_INIT_LOGOUT_CMND */
378 /* MaxCmdSN has been incremented */
380 /* Immediate Unsolicited Dataout */
382 /* Reject reason code */
384 /* CID contained in logout PDU when opcode == ISCSI_INIT_LOGOUT_CMND */
387 enum cmd_flags_table cmd_flags;
388 /* Initiator Task Tag assigned from Initiator */
390 /* Target Transfer Tag assigned from Target */
392 /* CmdSN assigned from Initiator */
394 /* ExpStatSN assigned from Initiator */
396 /* StatSN assigned to this ITT */
402 /* Last DataSN acknowledged via DataAck SNACK */
404 /* Used for echoing NOPOUT ping data */
406 /* Used to store DataDigest */
408 /* Counter for MaxOutstandingR2T */
409 u32 outstanding_r2ts;
410 /* Next R2T Offset when DataSequenceInOrder=Yes */
412 /* Iovec current and orig count for iscsi_cmd->iov_data */
414 u32 orig_iov_data_count;
415 /* Number of miscellaneous iovecs used for IP stack calls */
417 /* Number of struct iscsi_pdu in struct iscsi_cmd->pdu_list */
419 /* Next struct iscsi_pdu to send in struct iscsi_cmd->pdu_list */
421 /* Current struct iscsi_pdu in struct iscsi_cmd->pdu_list */
423 /* Next struct iscsi_seq to send in struct iscsi_cmd->seq_list */
425 /* Number of struct iscsi_seq in struct iscsi_cmd->seq_list */
427 /* Current struct iscsi_seq in struct iscsi_cmd->seq_list */
429 /* Lowest offset in current DataOUT sequence */
430 u32 seq_start_offset;
431 /* Highest offset in current DataOUT sequence */
433 /* Total size in bytes received so far of READ data */
435 /* Total size in bytes received so far of WRITE data */
437 /* Counter for FirstBurstLength key */
439 /* Counter for MaxBurstLength key */
441 /* Transfer size used for IP stack calls */
443 /* Buffer used for various purposes */
445 /* Used by SendTargets=[iqn.,eui.] discovery */
447 /* See include/linux/dma-mapping.h */
448 enum dma_data_direction data_direction;
449 /* iSCSI PDU Header + CRC */
450 unsigned char pdu[ISCSI_HDR_LEN + ISCSI_CRC_LEN];
451 /* Number of times struct iscsi_cmd is present in immediate queue */
452 atomic_t immed_queue_count;
453 atomic_t response_queue_count;
454 spinlock_t datain_lock;
455 spinlock_t dataout_timeout_lock;
456 /* spinlock for protecting struct iscsi_cmd->i_state */
457 spinlock_t istate_lock;
458 /* spinlock for adding within command recovery entries */
459 spinlock_t error_lock;
460 /* spinlock for adding R2Ts */
463 struct list_head datain_list;
465 struct list_head cmd_r2t_list;
466 /* Timer for DataOUT */
467 struct timer_list dataout_timer;
468 /* Iovecs for SCSI data payload RX/TX w/ kernel level sockets */
469 struct kvec *iov_data;
470 /* Iovecs for miscellaneous purposes */
471 #define ISCSI_MISC_IOVECS 5
472 struct kvec iov_misc[ISCSI_MISC_IOVECS];
473 /* Array of struct iscsi_pdu used for DataPDUInOrder=No */
474 struct iscsi_pdu *pdu_list;
475 /* Current struct iscsi_pdu used for DataPDUInOrder=No */
476 struct iscsi_pdu *pdu_ptr;
477 /* Array of struct iscsi_seq used for DataSequenceInOrder=No */
478 struct iscsi_seq *seq_list;
479 /* Current struct iscsi_seq used for DataSequenceInOrder=No */
480 struct iscsi_seq *seq_ptr;
481 /* TMR Request when iscsi_opcode == ISCSI_OP_SCSI_TMFUNC */
482 struct iscsi_tmr_req *tmr_req;
483 /* Connection this command is alligient to */
484 struct iscsi_conn *conn;
485 /* Pointer to connection recovery entry */
486 struct iscsi_conn_recovery *cr;
487 /* Session the command is part of, used for connection recovery */
488 struct iscsi_session *sess;
489 /* list_head for connection list */
490 struct list_head i_conn_node;
491 /* The TCM I/O descriptor that is accessed via container_of() */
492 struct se_cmd se_cmd;
493 /* Sense buffer that will be mapped into outgoing status */
494 #define ISCSI_SENSE_BUFFER_LEN (TRANSPORT_SENSE_BUFFER + 2)
495 unsigned char sense_buffer[ISCSI_SENSE_BUFFER_LEN];
500 struct scatterlist *first_data_sg;
501 u32 first_data_sg_off;
503 sense_reason_t sense_reason;
504 } ____cacheline_aligned;
506 struct iscsi_tmr_req {
507 bool task_reassign:1;
509 struct iscsi_cmd *ref_cmd;
510 struct iscsi_conn_recovery *conn_recovery;
511 struct se_tmr_req *se_tmr_req;
515 wait_queue_head_t queues_wq;
516 /* Authentication Successful for this connection */
518 /* State connection is currently in */
520 u8 conn_logout_reason;
521 u8 network_transport;
522 enum iscsi_timer_flags_table nopin_timer_flags;
523 enum iscsi_timer_flags_table nopin_response_timer_flags;
524 /* Used to know what thread encountered a transport failure */
526 /* connection id assigned by the Initiator */
528 /* Remote TCP Port */
534 /* Used for iscsi_tx_login_rsp() */
537 /* Per connection status sequence number */
539 struct sockaddr_storage login_sockaddr;
540 struct sockaddr_storage local_sockaddr;
541 int conn_usage_count;
542 int conn_waiting_on_uc;
543 atomic_t check_immediate_queue;
544 atomic_t conn_logout_remove;
545 atomic_t connection_exit;
546 atomic_t connection_recovery;
547 atomic_t connection_reinstatement;
548 atomic_t connection_wait_rcfr;
549 atomic_t sleep_on_conn_wait_comp;
550 atomic_t transport_failed;
551 struct completion conn_post_wait_comp;
552 struct completion conn_wait_comp;
553 struct completion conn_wait_rcfr_comp;
554 struct completion conn_waiting_on_uc_comp;
555 struct completion conn_logout_comp;
556 struct completion tx_half_close_comp;
557 struct completion rx_half_close_comp;
558 /* socket used by this connection */
560 void (*orig_data_ready)(struct sock *);
561 void (*orig_state_change)(struct sock *);
562 #define LOGIN_FLAGS_READ_ACTIVE 1
563 #define LOGIN_FLAGS_CLOSED 2
564 #define LOGIN_FLAGS_READY 4
565 #define LOGIN_FLAGS_INITIAL_PDU 8
566 unsigned long login_flags;
567 struct delayed_work login_work;
568 struct delayed_work login_cleanup_work;
569 struct iscsi_login *login;
570 struct timer_list nopin_timer;
571 struct timer_list nopin_response_timer;
572 struct timer_list transport_timer;
573 struct task_struct *login_kworker;
574 /* Spinlock used for add/deleting cmd's from conn_cmd_list */
576 spinlock_t conn_usage_lock;
577 spinlock_t immed_queue_lock;
578 spinlock_t nopin_timer_lock;
579 spinlock_t response_queue_lock;
580 spinlock_t state_lock;
581 /* libcrypto RX and TX contexts for crc32c */
582 struct hash_desc conn_rx_hash;
583 struct hash_desc conn_tx_hash;
584 /* Used for scheduling TX and RX connection kthreads */
585 cpumask_var_t conn_cpumask;
586 unsigned int conn_rx_reset_cpumask:1;
587 unsigned int conn_tx_reset_cpumask:1;
588 /* list_head of struct iscsi_cmd for this connection */
589 struct list_head conn_cmd_list;
590 struct list_head immed_queue_list;
591 struct list_head response_queue_list;
592 struct iscsi_conn_ops *conn_ops;
593 struct iscsi_login *conn_login;
594 struct iscsit_transport *conn_transport;
595 struct iscsi_param_list *param_list;
596 /* Used for per connection auth state machine */
599 struct iscsi_login_thread_s *login_thread;
600 struct iscsi_portal_group *tpg;
601 struct iscsi_tpg_np *tpg_np;
602 /* Pointer to parent session */
603 struct iscsi_session *sess;
605 int rx_thread_active;
606 struct task_struct *rx_thread;
607 struct completion rx_login_comp;
608 int tx_thread_active;
609 struct task_struct *tx_thread;
610 /* list_head for session connection list */
611 struct list_head conn_list;
612 } ____cacheline_aligned;
614 struct iscsi_conn_recovery {
617 u32 maxrecvdatasegmentlength;
618 u32 maxxmitdatasegmentlength;
619 int ready_for_reallegiance;
620 struct list_head conn_recovery_cmd_list;
621 spinlock_t conn_recovery_cmd_lock;
622 struct timer_list time2retain_timer;
623 struct iscsi_session *sess;
624 struct list_head cr_list;
625 } ____cacheline_aligned;
627 struct iscsi_session {
630 enum iscsi_timer_flags_table time2retain_timer_flags;
633 u16 conn_recovery_count;
635 /* state session is currently in */
637 /* session wide counter: initiator assigned task tag */
639 /* session wide counter: target assigned task tag */
643 /* protects cmdsn values */
644 struct mutex cmdsn_mutex;
645 /* session wide counter: expected command sequence number */
647 /* session wide counter: maximum allowed command sequence number */
649 struct list_head sess_ooo_cmdsn_list;
651 /* LIO specific session ID */
654 /* unique within the target */
656 /* Used for session reference counting */
657 int session_usage_count;
658 int session_waiting_on_uc;
659 atomic_long_t cmd_pdus;
660 atomic_long_t rsp_pdus;
661 atomic_long_t tx_data_octets;
662 atomic_long_t rx_data_octets;
663 atomic_long_t conn_digest_errors;
664 atomic_long_t conn_timeout_errors;
666 /* Number of active connections */
668 atomic_t session_continuation;
669 atomic_t session_fall_back_to_erl0;
670 atomic_t session_logout;
671 atomic_t session_reinstatement;
672 atomic_t session_stop_active;
673 atomic_t sleep_on_sess_wait_comp;
674 /* connection list */
675 struct list_head sess_conn_list;
676 struct list_head cr_active_list;
677 struct list_head cr_inactive_list;
678 spinlock_t conn_lock;
679 spinlock_t cr_a_lock;
680 spinlock_t cr_i_lock;
681 spinlock_t session_usage_lock;
683 struct completion async_msg_comp;
684 struct completion reinstatement_comp;
685 struct completion session_wait_comp;
686 struct completion session_waiting_on_uc_comp;
687 struct timer_list time2retain_timer;
688 struct iscsi_sess_ops *sess_ops;
689 struct se_session *se_sess;
690 struct iscsi_portal_group *tpg;
691 } ____cacheline_aligned;
695 u8 checked_for_existing;
697 u8 leading_connection;
707 u32 initial_exp_statsn;
711 char req[ISCSI_HDR_LEN];
712 char rsp[ISCSI_HDR_LEN];
715 struct iscsi_conn *conn;
717 } ____cacheline_aligned;
719 struct iscsi_node_attrib {
721 u32 dataout_timeout_retries;
724 u32 nopin_response_timeout;
725 u32 random_datain_pdu_offsets;
726 u32 random_datain_seq_offsets;
727 u32 random_r2t_offsets;
730 struct iscsi_node_acl *nacl;
733 struct se_dev_entry_s;
735 struct iscsi_node_auth {
736 enum naf_flags_table naf_flags;
737 int authenticate_target;
738 /* Used for iscsit_global->discovery_auth,
739 * set to zero (auth disabled) by default */
740 int enforce_discovery_auth;
741 #define MAX_USER_LEN 256
742 #define MAX_PASS_LEN 256
743 char userid[MAX_USER_LEN];
744 char password[MAX_PASS_LEN];
745 char userid_mutual[MAX_USER_LEN];
746 char password_mutual[MAX_PASS_LEN];
749 #include "iscsi_target_stat.h"
751 struct iscsi_node_stat_grps {
752 struct config_group iscsi_sess_stats_group;
753 struct config_group iscsi_conn_stats_group;
756 struct iscsi_node_acl {
757 struct se_node_acl se_node_acl;
758 struct iscsi_node_attrib node_attrib;
759 struct iscsi_node_auth node_auth;
760 struct iscsi_node_stat_grps node_stat_grps;
763 struct iscsi_tpg_attrib {
767 u32 generate_node_acls;
768 u32 cache_dynamic_acls;
769 u32 default_cmdsn_depth;
770 u32 demo_mode_write_protect;
771 u32 prod_mode_write_protect;
772 u32 demo_mode_discovery;
775 u32 fabric_prot_type;
776 u32 tpg_enabled_sendtargets;
777 u32 login_keys_workaround;
778 struct iscsi_portal_group *tpg;
782 int np_network_transport;
785 enum np_thread_state_table np_thread_state;
787 atomic_t np_reset_count;
788 enum iscsi_timer_flags_table np_login_timer_flags;
790 enum np_flags_table np_flags;
791 spinlock_t np_thread_lock;
792 struct completion np_restart_comp;
793 struct socket *np_socket;
794 struct sockaddr_storage np_sockaddr;
795 struct task_struct *np_thread;
796 struct timer_list np_login_timer;
798 struct iscsit_transport *np_transport;
799 struct list_head np_list;
800 } ____cacheline_aligned;
802 struct iscsi_tpg_np {
803 struct iscsi_np *tpg_np;
804 struct iscsi_portal_group *tpg;
805 struct iscsi_tpg_np *tpg_np_parent;
806 struct list_head tpg_np_list;
807 struct list_head tpg_np_child_list;
808 struct list_head tpg_np_parent_list;
809 struct se_tpg_np se_tpg_np;
810 spinlock_t tpg_np_parent_lock;
811 struct completion tpg_np_comp;
812 struct kref tpg_np_kref;
815 struct iscsi_portal_group {
816 unsigned char tpg_chap_id;
818 enum tpg_state_table tpg_state;
819 /* Target Portal Group Tag */
821 /* Id assigned to target sessions */
823 /* Number of active sessions */
825 /* Number of Network Portals available for this TPG */
827 /* Per TPG LIO specific session ID. */
829 /* Spinlock for adding/removing Network Portals */
830 spinlock_t tpg_np_lock;
831 spinlock_t tpg_state_lock;
832 struct se_portal_group tpg_se_tpg;
833 struct mutex tpg_access_lock;
834 struct semaphore np_login_sem;
835 struct iscsi_tpg_attrib tpg_attrib;
836 struct iscsi_node_auth tpg_demo_auth;
837 /* Pointer to default list of iSCSI parameters for TPG */
838 struct iscsi_param_list *param_list;
839 struct iscsi_tiqn *tpg_tiqn;
840 struct list_head tpg_gnp_list;
841 struct list_head tpg_list;
842 } ____cacheline_aligned;
844 struct iscsi_wwn_stat_grps {
845 struct config_group iscsi_stat_group;
846 struct config_group iscsi_instance_group;
847 struct config_group iscsi_sess_err_group;
848 struct config_group iscsi_tgt_attr_group;
849 struct config_group iscsi_login_stats_group;
850 struct config_group iscsi_logout_stats_group;
854 #define ISCSI_IQN_LEN 224
855 unsigned char tiqn[ISCSI_IQN_LEN];
856 enum tiqn_state_table tiqn_state;
857 int tiqn_access_count;
858 u32 tiqn_active_tpgs;
860 u32 tiqn_num_tpg_nps;
862 struct list_head tiqn_list;
863 struct list_head tiqn_tpg_list;
864 spinlock_t tiqn_state_lock;
865 spinlock_t tiqn_tpg_lock;
866 struct se_wwn tiqn_wwn;
867 struct iscsi_wwn_stat_grps tiqn_stat_grps;
869 struct iscsi_sess_err_stats sess_err_stats;
870 struct iscsi_login_stats login_stats;
871 struct iscsi_logout_stats logout_stats;
872 } ____cacheline_aligned;
874 struct iscsit_global {
875 /* In core shutdown */
878 /* Unique identifier used for the authentication daemon */
881 #define ISCSIT_BITMAP_BITS 262144
882 /* Thread Set bitmap pointer */
883 unsigned long *ts_bitmap;
884 spinlock_t ts_bitmap_lock;
885 /* Used for iSCSI discovery session authentication */
886 struct iscsi_node_acl discovery_acl;
887 struct iscsi_portal_group *discovery_tpg;
890 static inline u32 session_get_next_ttt(struct iscsi_session *session)
894 spin_lock_bh(&session->ttt_lock);
895 ttt = session->targ_xfer_tag++;
896 if (ttt == 0xFFFFFFFF)
897 ttt = session->targ_xfer_tag++;
898 spin_unlock_bh(&session->ttt_lock);
903 extern struct iscsi_cmd *iscsit_find_cmd_from_itt(struct iscsi_conn *, itt_t);
904 #endif /* ISCSI_TARGET_CORE_H */