1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2000 by Cisco Systems, Inc. All rights reserved. 23 * Copyright 2010 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #ifndef _ISCSI_H 28 #define _ISCSI_H 29 30 /* 31 * Block comment which describes the contents of this file. 32 */ 33 34 #ifdef __cplusplus 35 extern "C" { 36 #endif 37 38 #include <sys/scsi/scsi.h> 39 #include <sys/ddi.h> 40 #include <sys/sunddi.h> 41 #include <sys/socket.h> 42 #include <sys/kstat.h> 43 #include <sys/sunddi.h> 44 #include <sys/sunmdi.h> 45 #include <sys/mdi_impldefs.h> 46 #include <sys/time.h> 47 #include <sys/nvpair.h> 48 #include <sys/sdt.h> 49 50 #include <sys/iscsi_protocol.h> 51 #include <sys/scsi/adapters/iscsi_if.h> 52 #include <iscsiAuthClient.h> 53 #include <iscsi_stats.h> 54 #include <iscsi_thread.h> 55 #include <sys/idm/idm.h> 56 #include <sys/idm/idm_conn_sm.h> 57 #include <nvfile.h> 58 59 #ifndef MIN 60 #define MIN(a, b) ((a) < (b) ? (a) : (b)) 61 #endif 62 63 #ifndef TRUE 64 #define TRUE 1 65 #endif 66 67 #ifndef FALSE 68 #define FALSE 0 69 #endif 70 71 #define LOGIN_PDU_BUFFER_SIZE (16 * 1024) /* move somewhere else */ 72 73 extern boolean_t iscsi_conn_logging; 74 extern boolean_t iscsi_io_logging; 75 extern boolean_t iscsi_login_logging; 76 extern boolean_t iscsi_logging; 77 extern boolean_t iscsi_sess_logging; 78 #define ISCSI_CONN_LOG if (iscsi_conn_logging) cmn_err 79 #define ISCSI_IO_LOG if (iscsi_io_logging) cmn_err 80 #define ISCSI_LOGIN_LOG if (iscsi_login_logging) cmn_err 81 #define ISCSI_LOG if (iscsi_logging) cmn_err 82 #define ISCSI_SESS_LOG if (iscsi_sess_logging) cmn_err 83 84 /* 85 * Name Format of the different Task Queues 86 */ 87 #define ISCSI_SESS_IOTH_NAME_FORMAT "io_thrd_%d.%d" 88 #define ISCSI_SESS_WD_NAME_FORMAT "wd_thrd_%d.%d" 89 #define ISCSI_SESS_LOGIN_TASKQ_NAME_FORMAT "login_taskq_%d.%d" 90 #define ISCSI_CONN_CN_TASKQ_NAME_FORMAT "conn_cn_taskq_%d.%d.%d" 91 #define ISCSI_CONN_RXTH_NAME_FORMAT "rx_thrd_%d.%d.%d" 92 #define ISCSI_CONN_TXTH_NAME_FORMAT "tx_thrd_%d.%d.%d" 93 94 /* 95 * The iSCSI driver will not build scatter/gather lists (iovec) longer 96 * than the value defined here. Asserts have been include in the code 97 * to check. 98 */ 99 #define ISCSI_MAX_IOVEC 5 100 101 #define ISCSI_DEFAULT_MAX_STORM_DELAY 32 102 103 /* 104 * The SNDBUF and RCVBUF size parameters for the sockets are just a 105 * guess for the time being (I think it is the values used by CISCO 106 * or UNH). Testing will have to be done to figure * out the impact 107 * of these values on performance. 108 */ 109 #define ISCSI_SOCKET_SNDBUF_SIZE (256 * 1024) 110 #define ISCSI_SOCKET_RCVBUF_SIZE (256 * 1024) 111 #define ISCSI_TCP_NODELAY_DEFAULT 0 112 #define ISCSI_TCP_CNOTIFY_THRESHOLD_DEFAULT 2000 113 #define ISCSI_TCP_CABORT_THRESHOLD_DEFAULT 10000 114 #define ISCSI_TCP_ABORT_THRESHOLD_DEFAULT (30 * 1000) /* milliseconds */ 115 #define ISNS_TCP_ABORT_THRESHOLD_DEFAULT (3 * 1000) /* milliseconds */ 116 117 /* Default values for tunable parameters */ 118 #define ISCSI_DEFAULT_RX_TIMEOUT_VALUE 60 119 #define ISCSI_DEFAULT_CONN_DEFAULT_LOGIN_MAX 180 120 #define ISCSI_DEFAULT_LOGIN_POLLING_DELAY 60 121 122 /* 123 * Convenient short hand defines 124 */ 125 #define TARGET_PROP "target" 126 #define LUN_PROP "lun" 127 #define MDI_GUID "wwn" 128 #define NDI_GUID "client-guid" 129 130 #define ISCSI_SIG_CMD 0x11111111 131 #define ISCSI_SIG_LUN 0x22222222 132 #define ISCSI_SIG_CONN 0x33333333 133 #define ISCSI_SIG_SESS 0x44444444 134 #define ISCSI_SIG_HBA 0x55555555 135 136 #define SENDTARGETS_DISCOVERY "SENDTARGETS_DISCOVERY" 137 138 #define ISCSI_LUN_MASK_MSB 0x00003f00 139 #define ISCSI_LUN_MASK_LSB 0x000000ff 140 #define ISCSI_LUN_MASK (ISCSI_LUN_MASK_MSB | ISCSI_LUN_MASK_LSB) 141 #define ISCSI_LUN_BYTE_COPY(lun, report_lun_data) \ 142 lun[0] = (report_lun_data & ISCSI_LUN_MASK_MSB) >> 8; \ 143 lun[1] = (report_lun_data & ISCSI_LUN_MASK_LSB); 144 /* 145 * Not defined by iSCSI, but used in the login code to 146 * determine when to send the initial Login PDU 147 */ 148 #define ISCSI_INITIAL_LOGIN_STAGE -1 149 150 typedef enum iscsi_status { 151 /* Success */ 152 ISCSI_STATUS_SUCCESS = 0, 153 /* Driver / Kernel / Code error */ 154 ISCSI_STATUS_INTERNAL_ERROR, 155 /* ITT table is already full, unable to reserve slot */ 156 ISCSI_STATUS_ITT_TABLE_FULL, 157 /* Login on connection failed */ 158 ISCSI_STATUS_LOGIN_FAILED, 159 /* No connections are in the LOGGED_IN state */ 160 ISCSI_STATUS_NO_CONN_LOGGED_IN, 161 /* TCP Transfer Error */ 162 ISCSI_STATUS_TCP_TX_ERROR, 163 /* TCP Receive Error */ 164 ISCSI_STATUS_TCP_RX_ERROR, 165 /* iSCSI packet RCV timeout */ 166 ISCSI_STATUS_RX_TIMEOUT, 167 /* iSCSI Header Digest CRC error */ 168 ISCSI_STATUS_HEADER_DIGEST_ERROR, 169 /* iSCSI Data Digest CRC error */ 170 ISCSI_STATUS_DATA_DIGEST_ERROR, 171 /* kmem_alloc failure */ 172 ISCSI_STATUS_ALLOC_FAILURE, 173 /* cmd (tran_abort/reset) failed */ 174 ISCSI_STATUS_CMD_FAILED, 175 /* iSCSI protocol error */ 176 ISCSI_STATUS_PROTOCOL_ERROR, 177 /* iSCSI protocol version mismatch */ 178 ISCSI_STATUS_VERSION_MISMATCH, 179 /* iSCSI login negotiation failed */ 180 ISCSI_STATUS_NEGO_FAIL, 181 /* iSCSI login authentication failed */ 182 ISCSI_STATUS_AUTHENTICATION_FAILED, 183 /* iSCSI login redirection failed */ 184 ISCSI_STATUS_REDIRECTION_FAILED, 185 /* iSCSI uscsi status failure */ 186 ISCSI_STATUS_USCSI_FAILED, 187 /* data received would have overflowed given buffer */ 188 ISCSI_STATUS_DATA_OVERFLOW, 189 /* session/connection needs to shutdown */ 190 ISCSI_STATUS_SHUTDOWN, 191 /* logical unit in use */ 192 ISCSI_STATUS_BUSY, 193 /* Login on connection failed, retries exceeded */ 194 ISCSI_STATUS_LOGIN_TIMED_OUT, 195 /* iSCSI login tpgt negotiation failed */ 196 ISCSI_STATUS_LOGIN_TPGT_NEGO_FAIL 197 } iscsi_status_t; 198 #define ISCSI_SUCCESS(status) (status == ISCSI_STATUS_SUCCESS) 199 200 /* SNA32 check value used on increment of CmdSn values */ 201 #define ISCSI_SNA32_CHECK 2147483648UL /* 2**31 */ 202 203 /* 204 * This is the maximum number of commands that can be outstanding 205 * on a iSCSI session at anyone point in time. 206 */ 207 #define ISCSI_CMD_TABLE_SIZE 1024 208 209 /* Used on connections thread create of receiver thread */ 210 extern pri_t minclsyspri; 211 212 /* 213 * Callers of iscsid_config_one/all must hold this 214 * semaphore across the calls. Otherwise a ndi_devi_enter() 215 * deadlock in the DDI layer may occur. 216 */ 217 extern ksema_t iscsid_config_semaphore; 218 219 extern kmutex_t iscsi_oid_mutex; 220 extern uint32_t iscsi_oid; 221 extern void *iscsi_state; 222 223 /* 224 * NOP delay is used to send a iSCSI NOP (ie. ping) across the 225 * wire to see if the target is still alive. NOPs are only 226 * sent when the RX thread hasn't received anything for the 227 * below amount of time. 228 */ 229 #define ISCSI_DEFAULT_NOP_DELAY 5 /* seconds */ 230 extern int iscsi_nop_delay; 231 /* 232 * If we haven't received anything in a specified period of time 233 * we will stop accepting IO via tran start. This will enable 234 * upper level drivers to see we might be having a problem and 235 * in the case of scsi_vhci will start to route IO down a better 236 * path. 237 */ 238 #define ISCSI_DEFAULT_RX_WINDOW 20 /* seconds */ 239 extern int iscsi_rx_window; 240 /* 241 * If we haven't received anything in a specified period of time 242 * we will stop accepting IO via tran start. This the max limit 243 * when encountered we will start returning a fatal error. 244 */ 245 #define ISCSI_DEFAULT_RX_MAX_WINDOW 180 /* seconds */ 246 extern int iscsi_rx_max_window; 247 248 /* 249 * During iscsi boot, if the boot session has been created, the 250 * initiator hasn't changed the boot lun to be online, we will wait 251 * 180s here for lun online by default. 252 */ 253 #define ISCSI_BOOT_DEFAULT_MAX_DELAY 180 /* seconds */ 254 /* 255 * +--------------------------------------------------------------------+ 256 * | iSCSI Driver Structures | 257 * +--------------------------------------------------------------------+ 258 */ 259 260 /* 261 * iSCSI Auth Information 262 */ 263 typedef struct iscsi_auth { 264 IscsiAuthStringBlock auth_recv_string_block; 265 IscsiAuthStringBlock auth_send_string_block; 266 IscsiAuthLargeBinary auth_recv_binary_block; 267 IscsiAuthLargeBinary auth_send_binary_block; 268 IscsiAuthClient auth_client_block; 269 int num_auth_buffers; 270 IscsiAuthBufferDesc auth_buffers[5]; 271 272 /* 273 * To indicate if bi-directional authentication is enabled. 274 * 0 means uni-directional authentication. 275 * 1 means bi-directional authentication. 276 */ 277 int bidirectional_auth; 278 279 /* Initiator's authentication information. */ 280 char username[iscsiAuthStringMaxLength]; 281 uint8_t password[iscsiAuthStringMaxLength]; 282 int password_length; 283 284 /* Target's authentication information. */ 285 char username_in[iscsiAuthStringMaxLength]; 286 uint8_t password_in[iscsiAuthStringMaxLength]; 287 int password_length_in; 288 } iscsi_auth_t; 289 290 /* 291 * iSCSI Task 292 */ 293 typedef struct iscsi_task { 294 void *t_arg; 295 boolean_t t_blocking; 296 } iscsi_task_t; 297 298 /* 299 * These are all the iscsi_cmd types that we use to track our 300 * commands between queues and actions. 301 */ 302 typedef enum iscsi_cmd_type { 303 ISCSI_CMD_TYPE_SCSI = 1, /* scsi cmd */ 304 ISCSI_CMD_TYPE_NOP, /* nop / ping */ 305 ISCSI_CMD_TYPE_ABORT, /* abort */ 306 ISCSI_CMD_TYPE_RESET, /* reset */ 307 ISCSI_CMD_TYPE_LOGOUT, /* logout */ 308 ISCSI_CMD_TYPE_LOGIN, /* login */ 309 ISCSI_CMD_TYPE_TEXT /* text */ 310 } iscsi_cmd_type_t; 311 312 /* 313 * iscsi_cmd_state - (reference iscsi_cmd.c for state diagram) 314 */ 315 typedef enum iscsi_cmd_state { 316 ISCSI_CMD_STATE_FREE = 0, 317 ISCSI_CMD_STATE_PENDING, 318 ISCSI_CMD_STATE_ACTIVE, 319 ISCSI_CMD_STATE_ABORTING, 320 ISCSI_CMD_STATE_IDM_ABORTING, 321 ISCSI_CMD_STATE_COMPLETED, 322 ISCSI_CMD_STATE_MAX 323 } iscsi_cmd_state_t; 324 325 #ifdef ISCSI_CMD_SM_STRINGS 326 static const char *iscsi_cmd_state_names[ISCSI_CMD_STATE_MAX+1] = { 327 "ISCSI_CMD_STATE_FREE", 328 "ISCSI_CMD_STATE_PENDING", 329 "ISCSI_CMD_STATE_ACTIVE", 330 "ISCSI_CMD_STATE_ABORTING", 331 "ISCSI_CMD_STATE_IDM_ABORTING", 332 "ISCSI_CMD_STATE_COMPLETED", 333 "ISCSI_CMD_STATE_MAX" 334 }; 335 #endif 336 337 /* 338 * iscsi command events 339 */ 340 typedef enum iscsi_cmd_event { 341 ISCSI_CMD_EVENT_E1 = 0, 342 ISCSI_CMD_EVENT_E2, 343 ISCSI_CMD_EVENT_E3, 344 ISCSI_CMD_EVENT_E4, 345 ISCSI_CMD_EVENT_E6, 346 ISCSI_CMD_EVENT_E7, 347 ISCSI_CMD_EVENT_E8, 348 ISCSI_CMD_EVENT_E9, 349 ISCSI_CMD_EVENT_E10, 350 ISCSI_CMD_EVENT_MAX 351 } iscsi_cmd_event_t; 352 353 #ifdef ISCSI_CMD_SM_STRINGS 354 static const char *iscsi_cmd_event_names[ISCSI_CMD_EVENT_MAX+1] = { 355 "ISCSI_CMD_EVENT_E1", 356 "ISCSI_CMD_EVENT_E2", 357 "ISCSI_CMD_EVENT_E3", 358 "ISCSI_CMD_EVENT_E4", 359 "ISCSI_CMD_EVENT_E6", 360 "ISCSI_CMD_EVENT_E7", 361 "ISCSI_CMD_EVENT_E8", 362 "ISCSI_CMD_EVENT_E9", 363 "ISCSI_CMD_EVENT_E10", 364 "ISCSI_CMD_EVENT_MAX" 365 }; 366 #endif 367 368 /* 369 * iscsi text command stages - these stages are used by iSCSI text 370 * processing to manage long resonses. 371 */ 372 typedef enum iscsi_cmd_text_stage { 373 ISCSI_CMD_TEXT_INITIAL_REQ = 0, 374 ISCSI_CMD_TEXT_CONTINUATION, 375 ISCSI_CMD_TEXT_FINAL_RSP 376 } iscsi_cmd_text_stage_t; 377 378 /* 379 * iscsi cmd misc flags - bitwise applicable 380 */ 381 #define ISCSI_CMD_MISCFLAG_INTERNAL 0x1 382 #define ISCSI_CMD_MISCFLAG_FREE 0x2 383 #define ISCSI_CMD_MISCFLAG_STUCK 0x4 384 #define ISCSI_CMD_MISCFLAG_XARQ 0x8 385 #define ISCSI_CMD_MISCFLAG_SENT 0x10 386 #define ISCSI_CMD_MISCFLAG_FLUSH 0x20 387 388 /* 389 * 1/2 of a 32 bit number, used for checking CmdSN 390 * wrapped. 391 */ 392 #define ISCSI_CMD_SN_WRAP 0x80000000 393 394 #define ISCSI_CMD_PKT_STAT_INIT 0 395 396 /* 397 * iSCSI cmd/pkt Structure 398 */ 399 typedef struct iscsi_cmd { 400 uint32_t cmd_sig; 401 struct iscsi_cmd *cmd_prev; 402 struct iscsi_cmd *cmd_next; 403 struct iscsi_conn *cmd_conn; 404 405 iscsi_cmd_type_t cmd_type; 406 iscsi_cmd_state_t cmd_state; 407 iscsi_cmd_state_t cmd_prev_state; 408 clock_t cmd_lbolt_pending; 409 clock_t cmd_lbolt_active; 410 clock_t cmd_lbolt_aborting; 411 clock_t cmd_lbolt_idm_aborting; 412 clock_t cmd_lbolt_timeout; 413 uint8_t cmd_misc_flags; 414 idm_task_t *cmd_itp; 415 416 union { 417 /* ISCSI_CMD_TYPE_SCSI */ 418 struct { 419 idm_buf_t *ibp_ibuf; 420 idm_buf_t *ibp_obuf; 421 struct scsi_pkt *pkt; 422 struct buf *bp; 423 int cmdlen; 424 int statuslen; 425 size_t data_transferred; 426 427 uint32_t lun; 428 429 /* 430 * If SCSI_CMD_TYPE is in ABORTING_STATE 431 * then the abort_icmdp field will be a pointer 432 * to the abort command chasing this one. 433 */ 434 struct iscsi_cmd *abort_icmdp; 435 /* 436 * pointer to the r2t associated with this 437 * command (if any) 438 */ 439 struct iscsi_cmd *r2t_icmdp; 440 /* 441 * It will be true if this command has 442 * another R2T to handle. 443 */ 444 boolean_t r2t_more; 445 /* 446 * It is used to record pkt_statistics temporarily. 447 */ 448 uint_t pkt_stat; 449 } scsi; 450 /* ISCSI_CMD_TYPE_ABORT */ 451 struct { 452 /* pointer to original iscsi_cmd, for abort */ 453 struct iscsi_cmd *icmdp; 454 } abort; 455 /* ISCSI_CMD_TYPE_RESET */ 456 struct { 457 int level; 458 uint8_t response; 459 } reset; 460 /* ISCSI_CMD_TYPE_NOP */ 461 struct { 462 int rsvd; 463 } nop; 464 /* ISCSI_CMD_TYPE_R2T */ 465 struct { 466 struct iscsi_cmd *icmdp; 467 uint32_t offset; 468 uint32_t length; 469 } r2t; 470 /* ISCSI_CMD_TYPE_LOGIN */ 471 struct { 472 int rvsd; 473 } login; 474 /* ISCSI_CMD_TYPE_LOGOUT */ 475 struct { 476 int rsvd; 477 } logout; 478 /* ISCSI_CMD_TYPE_TEXT */ 479 struct { 480 char *buf; 481 int buf_len; 482 uint32_t offset; 483 uint32_t data_len; 484 uint32_t total_rx_len; 485 uint32_t ttt; 486 uint8_t lun[8]; 487 iscsi_cmd_text_stage_t stage; 488 } text; 489 } cmd_un; 490 491 struct iscsi_lun *cmd_lun; /* associated lun */ 492 493 uint32_t cmd_itt; 494 uint32_t cmd_ttt; 495 496 /* 497 * If a data digest error is seem on a data pdu. This flag 498 * will get set. We don't abort the cmd immediately because 499 * we want to read in all the data to get it out of the 500 * stream. Once the completion for the cmd is received we 501 * we will abort the cmd and state no sense data was available. 502 */ 503 boolean_t cmd_crc_error_seen; 504 505 /* 506 * Used to block and wake up caller until action is completed. 507 * This is for ABORT, RESET, and PASSTHRU cmds. 508 */ 509 int cmd_result; 510 int cmd_completed; 511 kmutex_t cmd_mutex; 512 kcondvar_t cmd_completion; 513 514 idm_pdu_t cmd_pdu; 515 516 sm_audit_buf_t cmd_state_audit; 517 518 uint32_t cmd_sn; 519 } iscsi_cmd_t; 520 521 522 /* 523 * iSCSI LUN Structure 524 */ 525 typedef struct iscsi_lun { 526 uint32_t lun_sig; 527 int lun_state; 528 529 struct iscsi_lun *lun_next; /* next lun on this sess. */ 530 struct iscsi_sess *lun_sess; /* parent sess. for lun */ 531 dev_info_t *lun_dip; 532 mdi_pathinfo_t *lun_pip; 533 534 uint16_t lun_num; /* LUN */ 535 uint8_t lun_addr_type; /* LUN addressing type */ 536 uint32_t lun_oid; /* OID */ 537 char *lun_guid; /* GUID */ 538 int lun_guid_size; /* GUID allocation size */ 539 char *lun_addr; /* sess,lun */ 540 time_t lun_time_online; 541 542 uchar_t lun_cap; /* bitmap of scsi caps */ 543 544 uchar_t lun_vid[ISCSI_INQ_VID_BUF_LEN]; /* Vendor ID */ 545 uchar_t lun_pid[ISCSI_INQ_PID_BUF_LEN]; /* Product ID */ 546 547 uchar_t lun_type; 548 } iscsi_lun_t; 549 550 #define ISCSI_LUN_STATE_CLEAR 0 /* used to clear all states */ 551 #define ISCSI_LUN_STATE_OFFLINE 1 552 #define ISCSI_LUN_STATE_ONLINE 2 553 #define ISCSI_LUN_STATE_INVALID 4 /* offline failed */ 554 #define ISCSI_LUN_STATE_BUSY 8 /* logic unit is in reset */ 555 556 #define ISCSI_LUN_CAP_RESET 0x01 557 558 #define ISCSI_SCSI_RESET_SENSE_CODE 0x29 559 560 /* 561 * 562 * 563 */ 564 typedef struct iscsi_queue { 565 iscsi_cmd_t *head; 566 iscsi_cmd_t *tail; 567 int count; 568 kmutex_t mutex; 569 } iscsi_queue_t; 570 571 #define ISCSI_CONN_DEFAULT_LOGIN_MIN 0 572 #define ISCSI_CONN_DEFAULT_LOGIN_REDIRECT 10 573 574 /* iSCSI tunable Parameters */ 575 typedef struct iscsi_tunable_params { 576 int recv_login_rsp_timeout; /* range: 0 - 60*60 */ 577 int conn_login_max; /* range: 0 - 60*60 */ 578 int polling_login_delay; /* range: 0 - 60*60 */ 579 } iscsi_tunable_params_t; 580 581 typedef union iscsi_sockaddr { 582 struct sockaddr sin; 583 struct sockaddr_in sin4; 584 struct sockaddr_in6 sin6; 585 } iscsi_sockaddr_t; 586 587 #define SIZEOF_SOCKADDR(so) ((so)->sa_family == AF_INET ? \ 588 sizeof (struct sockaddr_in) : sizeof (struct sockaddr_in6)) 589 590 typedef enum { 591 LOGIN_START, 592 LOGIN_READY, 593 LOGIN_TX, 594 LOGIN_RX, 595 LOGIN_ERROR, 596 LOGIN_DONE, 597 LOGIN_FFP, 598 LOGIN_MAX 599 } iscsi_login_state_t; 600 601 #ifdef ISCSI_LOGIN_STATE_NAMES 602 static const char *iscsi_login_state_names[LOGIN_MAX+1] = { 603 "LOGIN_START", 604 "LOGIN_READY", 605 "LOGIN_TX", 606 "LOGIN_RX", 607 "LOGIN_ERROR", 608 "LOGIN_DONE", 609 "LOGIN_FFP", 610 "LOGIN_MAX" 611 }; 612 #endif 613 614 /* 615 * iscsi_conn_state 616 */ 617 typedef enum iscsi_conn_state { 618 ISCSI_CONN_STATE_UNDEFINED = 0, 619 ISCSI_CONN_STATE_FREE, 620 ISCSI_CONN_STATE_IN_LOGIN, 621 ISCSI_CONN_STATE_LOGGED_IN, 622 ISCSI_CONN_STATE_IN_LOGOUT, 623 ISCSI_CONN_STATE_FAILED, 624 ISCSI_CONN_STATE_POLLING, 625 ISCSI_CONN_STATE_MAX 626 } iscsi_conn_state_t; 627 628 #ifdef ISCSI_ICS_NAMES 629 static const char *iscsi_ics_name[ISCSI_CONN_STATE_MAX+1] = { 630 "ISCSI_CONN_STATE_UNDEFINED", 631 "ISCSI_CONN_STATE_FREE", 632 "ISCSI_CONN_STATE_IN_LOGIN", 633 "ISCSI_CONN_STATE_LOGGED_IN", 634 "ISCSI_CONN_STATE_IN_LOGOUT", 635 "ISCSI_CONN_STATE_FAILED", 636 "ISCSI_CONN_STATE_POLLING", 637 "ISCSI_CONN_STATE_MAX" 638 }; 639 #endif 640 641 #define ISCSI_CONN_STATE_FULL_FEATURE(state) \ 642 ((state == ISCSI_CONN_STATE_LOGGED_IN) || \ 643 (state == ISCSI_CONN_STATE_IN_LOGOUT)) 644 645 /* 646 * iSCSI Connection Structure 647 */ 648 typedef struct iscsi_conn { 649 uint32_t conn_sig; 650 struct iscsi_conn *conn_next; /* next conn on this sess. */ 651 struct iscsi_sess *conn_sess; /* parent sess. for conn. */ 652 653 iscsi_conn_state_t conn_state; /* cur. conn. driver state */ 654 iscsi_conn_state_t conn_prev_state; /* prev. conn. driver state */ 655 /* protects the session state and synchronizes the state machine */ 656 kmutex_t conn_state_mutex; 657 kcondvar_t conn_state_change; 658 boolean_t conn_state_destroy; 659 boolean_t conn_state_ffp; 660 boolean_t conn_state_idm_connected; 661 boolean_t conn_async_logout; 662 ddi_taskq_t *conn_cn_taskq; 663 664 idm_conn_t *conn_ic; 665 666 /* base connection information, may have been redirected */ 667 iscsi_sockaddr_t conn_base_addr; 668 669 /* current connection information, may have been redirected */ 670 iscsi_sockaddr_t conn_curr_addr; 671 672 boolean_t conn_bound; 673 iscsi_sockaddr_t conn_bound_addr; 674 675 uint32_t conn_cid; /* CID */ 676 uint32_t conn_oid; /* OID */ 677 678 int conn_current_stage; /* iSCSI login stage */ 679 int conn_next_stage; /* iSCSI login stage */ 680 int conn_partial_response; 681 682 /* 683 * The active queue contains iscsi_cmds that have already 684 * been sent on this connection. Any future responses to 685 * these cmds require alligence to this connection. If there 686 * are issues with these cmds the command may need aborted 687 * depending on the command type, and must be put back into 688 * the session's pending queue or aborted. 689 */ 690 iscsi_queue_t conn_queue_active; 691 iscsi_queue_t conn_queue_idm_aborting; 692 693 /* lbolt from the last receive, used for nop processing */ 694 clock_t conn_rx_lbolt; 695 clock_t conn_nop_lbolt; 696 697 iscsi_thread_t *conn_tx_thread; 698 699 /* 700 * The expstatsn is the command status sn that is expected 701 * next from the target. Command status is carried on a number 702 * of iSCSI PDUs (ex. SCSI Cmd Response, SCSI Data IN with 703 * S-Bit set, ...), not all PDUs. If our expstatsn is different 704 * than the received statsn. Something got out of sync we need to 705 * recover. 706 */ 707 uint32_t conn_expstatsn; 708 uint32_t conn_laststatsn; 709 710 /* active login parameters */ 711 iscsi_login_params_t conn_params; 712 713 /* Statistics */ 714 struct { 715 kstat_t *ks; 716 iscsi_conn_stats_t ks_data; 717 } stats; 718 719 /* 720 * These fields are used to coordinate the asynchronous IDM 721 * PDU operations with the synchronous login code. 722 */ 723 kmutex_t conn_login_mutex; 724 kcondvar_t conn_login_cv; 725 iscsi_login_state_t conn_login_state; 726 iscsi_status_t conn_login_status; 727 iscsi_hdr_t conn_login_resp_hdr; 728 char *conn_login_data; 729 int conn_login_datalen; 730 int conn_login_max_data_length; 731 732 /* 733 * login min and max identify the amount of time 734 * in lbolt that iscsi_start_login() should attempt 735 * to log into a target portal. The login will 736 * delay until the min lbolt has been reached and 737 * will end once max time has been reached. These 738 * values are normally set to the default but can 739 * are also altered by async commands received from 740 * the targetlogin. 741 */ 742 clock_t conn_login_min; 743 clock_t conn_login_max; 744 sm_audit_buf_t conn_state_audit; 745 746 /* active tunable parameters */ 747 iscsi_tunable_params_t conn_tunable_params; 748 boolean_t conn_timeout; 749 } iscsi_conn_t; 750 751 752 /* 753 * iscsi_sess_state - (reference iscsi_sess.c for state diagram) 754 */ 755 typedef enum iscsi_sess_state { 756 ISCSI_SESS_STATE_FREE = 0, 757 ISCSI_SESS_STATE_LOGGED_IN, 758 ISCSI_SESS_STATE_FAILED, 759 ISCSI_SESS_STATE_IN_FLUSH, 760 ISCSI_SESS_STATE_FLUSHED, 761 ISCSI_SESS_STATE_MAX 762 } iscsi_sess_state_t; 763 764 #ifdef ISCSI_SESS_SM_STRINGS 765 static const char *iscsi_sess_state_names[ISCSI_SESS_STATE_MAX+1] = { 766 "ISCSI_SESS_STATE_FREE", 767 "ISCSI_SESS_STATE_LOGGED_IN", 768 "ISCSI_SESS_STATE_FAILED", 769 "ISCSI_SESS_STATE_IN_FLUSH", 770 "ISCSI_SESS_STATE_FLUSHED", 771 "ISCSI_SESS_STATE_MAX" 772 }; 773 #endif 774 775 #define ISCSI_SESS_STATE_FULL_FEATURE(state) \ 776 ((state == ISCSI_SESS_STATE_LOGGED_IN) || \ 777 (state == ISCSI_SESS_STATE_IN_FLUSH)) 778 779 780 typedef enum iscsi_sess_event { 781 ISCSI_SESS_EVENT_N1 = 0, 782 ISCSI_SESS_EVENT_N3, 783 ISCSI_SESS_EVENT_N5, 784 ISCSI_SESS_EVENT_N6, 785 ISCSI_SESS_EVENT_N7, 786 ISCSI_SESS_EVENT_MAX 787 } iscsi_sess_event_t; 788 789 #ifdef ISCSI_SESS_SM_STRINGS 790 static const char *iscsi_sess_event_names[ISCSI_SESS_EVENT_MAX+1] = { 791 "ISCSI_SESS_EVENT_N1", 792 "ISCSI_SESS_EVENT_N3", 793 "ISCSI_SESS_EVENT_N5", 794 "ISCSI_SESS_EVENT_N6", 795 "ISCSI_SESS_EVENT_N7", 796 "ISCSI_SESS_EVENT_MAX" 797 }; 798 #endif 799 800 typedef enum iscsi_sess_type { 801 ISCSI_SESS_TYPE_NORMAL = 0, 802 ISCSI_SESS_TYPE_DISCOVERY 803 } iscsi_sess_type_t; 804 805 #define SESS_ABORT_TASK_MAX_THREADS 1 806 807 /* Sun's initiator session ID */ 808 #define ISCSI_SUN_ISID_0 0x40 /* ISID - EN format */ 809 #define ISCSI_SUN_ISID_1 0x00 /* Sec B */ 810 #define ISCSI_SUN_ISID_2 0x00 /* Sec B */ 811 #define ISCSI_SUN_ISID_3 0x2A /* Sec C - 42 = Sun's EN */ 812 /* 813 * defines 4-5 are the reserved values. These reserved values 814 * are used as the ISID for an initiator-port in MP-API and used 815 * for the send targets discovery sessions. Byte 5 is overridden 816 * for full feature sessions. The default values of byte 5 for a 817 * full feature session is 0. When MS/T is enabled with more than 818 * one session this byte 5 will increment > 0 up to 819 * ISCSI_MAX_CONFIG_SESSIONS. 820 */ 821 #define ISCSI_SUN_ISID_4 0x00 822 #define ISCSI_SUN_ISID_5 0xFF 823 824 #define ISCSI_DEFAULT_SESS_BOUND B_FALSE 825 #define ISCSI_DEFAULT_SESS_NUM 1 826 827 /* 828 * iSCSI Session(Target) Structure 829 */ 830 typedef struct iscsi_sess { 831 uint32_t sess_sig; 832 833 iscsi_sess_state_t sess_state; 834 iscsi_sess_state_t sess_prev_state; 835 clock_t sess_state_lbolt; 836 /* protects the session state and synchronizes the state machine */ 837 kmutex_t sess_state_mutex; 838 839 /* 840 * Associated target OID. 841 */ 842 uint32_t sess_target_oid; 843 844 /* 845 * Session OID. Used by IMA, interfaces and exported as 846 * TARGET_PROP which is checked by the NDI. In addition 847 * this is used in our tran_lun_init function. 848 */ 849 uint32_t sess_oid; 850 851 struct iscsi_sess *sess_next; 852 struct iscsi_hba *sess_hba; 853 854 /* list of all luns relating to session */ 855 struct iscsi_lun *sess_lun_list; 856 krwlock_t sess_lun_list_rwlock; 857 858 /* list of all connections relating to session */ 859 struct iscsi_conn *sess_conn_list; 860 struct iscsi_conn *sess_conn_list_last_ptr; 861 /* pointer to active connection in session */ 862 struct iscsi_conn *sess_conn_act; 863 krwlock_t sess_conn_list_rwlock; 864 865 /* Connection ID for next connection to be added to session */ 866 uint32_t sess_conn_next_cid; 867 868 /* 869 * last time any connection on this session received 870 * data from the target. 871 */ 872 clock_t sess_rx_lbolt; 873 874 clock_t sess_failure_lbolt; 875 876 int sess_storm_delay; 877 878 /* 879 * sess_cmdsn_mutex protects the cmdsn and itt table/values 880 * Cmdsn isn't that big of a problem yet since we only have 881 * one connection but in the future we will need to ensure 882 * this locking is working so keep the sequence numbers in 883 * sync on the wire. 884 * 885 * We also use this lock to protect the ITT table and it's 886 * values. We need to make sure someone doesn't assign 887 * a duplicate ITT value or cell to a command. Also we 888 * need to make sure when someone is looking up an ITT 889 * that the command is still in that correct queue location. 890 */ 891 kmutex_t sess_cmdsn_mutex; 892 893 /* 894 * iSCSI command sequencing / windowing. The next 895 * command to be sent via the pending queue will 896 * get the sess_cmdsn. If the maxcmdsn is less 897 * than the next cmdsn then the iSCSI window is 898 * closed and this command cannot be sent yet. 899 * Most iscsi cmd responses from the target carry 900 * a new maxcmdsn. If this new maxcmdsn is greater 901 * than the sess_maxcmdsn we will update it's value 902 * and set a timer to fire in one tick and reprocess 903 * the pending queue. 904 * 905 * The expcmdsn. Is the value the target expects 906 * to be sent for my next cmdsn. If the expcmdsn 907 * and the cmdsn get out of sync this could denote 908 * a communication problem. 909 */ 910 uint32_t sess_cmdsn; 911 uint32_t sess_expcmdsn; 912 uint32_t sess_maxcmdsn; 913 914 /* Next Initiator Task Tag (ITT) to use */ 915 uint32_t sess_itt; 916 /* 917 * The session iscsi_cmd table is used to a fast performance 918 * lookup of an ITT to a iscsi_cmd when we receive an iSCSI 919 * PDU from the wire. To reserve a location in the sess_cmd_table 920 * we try the sess_itt % ISCSI_CMD_TABLE_SIZE if this cmd table 921 * cell is already full. Then increament the sess_itt and 922 * try to get the cell position again, repeat until an empty 923 * cell is found. Once an empty cell is found place your 924 * scsi_cmd point into the cell to reserve the location. This 925 * selection process should be done while holding the session's 926 * mutex. 927 */ 928 struct iscsi_cmd *sess_cmd_table[ISCSI_CMD_TABLE_SIZE]; 929 int sess_cmd_table_count; 930 931 /* 932 * The pending queue contains all iscsi_cmds that require an 933 * open MaxCmdSn window to be put on the wire and haven't 934 * been placed on the wire. Once placed on the wire they 935 * will be moved to a connections specific active queue. 936 */ 937 iscsi_queue_t sess_queue_pending; 938 939 iscsi_error_t sess_last_err; 940 941 iscsi_queue_t sess_queue_completion; 942 /* configured login parameters */ 943 iscsi_login_params_t sess_params; 944 945 /* general iSCSI protocol/session info */ 946 uchar_t sess_name[ISCSI_MAX_NAME_LEN]; 947 int sess_name_length; 948 char sess_alias[ISCSI_MAX_NAME_LEN]; 949 int sess_alias_length; 950 iSCSIDiscoveryMethod_t sess_discovered_by; 951 iscsi_sockaddr_t sess_discovered_addr; 952 uchar_t sess_isid[ISCSI_ISID_LEN]; /* Session ID */ 953 uint16_t sess_tsid; /* Target ID */ 954 /* 955 * If the target portal group tag(TPGT) is equal to ISCSI_DEFAULT_TPGT 956 * then the initiator will accept a successful login with any TPGT 957 * specified by the target. If a none default TPGT is configured 958 * then we will only successfully accept a login with that matching 959 * TPGT value. 960 */ 961 int sess_tpgt_conf; 962 /* This field records the negotiated TPGT value, preserved for dtrace */ 963 int sess_tpgt_nego; 964 965 /* 966 * Authentication information. 967 * 968 * DCW: Again IMA seems to take a session view at this 969 * information. 970 */ 971 iscsi_auth_t sess_auth; 972 973 /* Statistics */ 974 struct { 975 kstat_t *ks; 976 iscsi_sess_stats_t ks_data; 977 kstat_t *ks_io; 978 kstat_io_t ks_io_data; 979 kmutex_t ks_io_lock; 980 } stats; 981 982 iscsi_thread_t *sess_ic_thread; 983 boolean_t sess_window_open; 984 boolean_t sess_boot; 985 iscsi_sess_type_t sess_type; 986 987 boolean_t sess_enum_in_progress; 988 989 ddi_taskq_t *sess_taskq; 990 991 iscsi_thread_t *sess_wd_thread; 992 993 sm_audit_buf_t sess_state_audit; 994 995 kmutex_t sess_reset_mutex; 996 997 boolean_t sess_reset_in_progress; 998 999 boolean_t sess_boot_nic_reset; 1000 } iscsi_sess_t; 1001 1002 /* 1003 * This structure will be used to store sessions to be online 1004 * during normal login operation. 1005 */ 1006 typedef struct iscsi_sess_list { 1007 iscsi_sess_t *session; 1008 struct iscsi_sess_list *next; 1009 } iscsi_sess_list_t; 1010 1011 /* 1012 * iSCSI client notify task context for deferred IDM notifications processing 1013 */ 1014 typedef struct iscsi_cn_task { 1015 idm_conn_t *ct_ic; 1016 idm_client_notify_t ct_icn; 1017 uintptr_t ct_data; 1018 } iscsi_cn_task_t; 1019 1020 /* 1021 * iscsi_network 1022 */ 1023 typedef struct iscsi_network { 1024 void* (*socket)(int domain, int, int); 1025 int (*bind)(void *, struct sockaddr *, int, int, int); 1026 int (*connect)(void *, struct sockaddr *, int, int, int); 1027 int (*listen)(void *, int); 1028 void* (*accept)(void *, struct sockaddr *, int *); 1029 int (*getsockname)(void *, struct sockaddr *, socklen_t *); 1030 int (*getsockopt)(void *, int, int, void *, int *, int); 1031 int (*setsockopt)(void *, int, int, void *, int); 1032 int (*shutdown)(void *, int); 1033 void (*close)(void *); 1034 1035 size_t (*poll)(void *, clock_t); 1036 size_t (*sendmsg)(void *, struct msghdr *); 1037 size_t (*recvmsg)(void *, struct msghdr *, int); 1038 1039 iscsi_status_t (*sendpdu)(void *, iscsi_hdr_t *, char *, int); 1040 iscsi_status_t (*recvdata)(void *, iscsi_hdr_t *, char *, 1041 int, int, int); 1042 iscsi_status_t (*recvhdr)(void *, iscsi_hdr_t *, int, int, int); 1043 1044 struct { 1045 int sndbuf; 1046 int rcvbuf; 1047 int nodelay; 1048 int conn_notify_threshold; 1049 int conn_abort_threshold; 1050 int abort_threshold; 1051 } tweaks; 1052 } iscsi_network_t; 1053 1054 #define ISCSI_NET_HEADER_DIGEST 0x00000001 1055 #define ISCSI_NET_DATA_DIGEST 0x00000002 1056 1057 extern iscsi_network_t *iscsi_net; 1058 1059 /* 1060 * If we get bus_config requests in less than 5 seconds 1061 * apart skip the name services re-discovery and just 1062 * complete the requested logins. This protects against 1063 * bus_config storms from stale /dev links. 1064 */ 1065 #define ISCSI_CONFIG_STORM_DELAY_DEFAULT 5 1066 1067 /* 1068 * iSCSI HBA Structure 1069 */ 1070 typedef struct iscsi_hba { 1071 uint32_t hba_sig; 1072 dev_info_t *hba_dip; /* dev info ptr */ 1073 scsi_hba_tran_t *hba_tran; /* scsi tran ptr */ 1074 ldi_ident_t hba_li; 1075 1076 struct iscsi_sess *hba_sess_list; /* sess. list for hba */ 1077 krwlock_t hba_sess_list_rwlock; /* protect sess. list */ 1078 1079 /* lbolt of the last time we received a config request */ 1080 clock_t hba_config_lbolt; 1081 /* current number of seconds to protect against bus config storms */ 1082 int hba_config_storm_delay; 1083 1084 /* general iSCSI protocol hba/initiator info */ 1085 uchar_t hba_name[ISCSI_MAX_NAME_LEN]; 1086 int hba_name_length; 1087 uchar_t hba_alias[ISCSI_MAX_NAME_LEN]; 1088 int hba_alias_length; 1089 1090 /* Default SessionID for HBA */ 1091 uchar_t hba_isid[ISCSI_ISID_LEN]; 1092 1093 /* Default HBA wide settings */ 1094 iscsi_login_params_t hba_params; 1095 1096 /* 1097 * There's only one HBA and it's set to ISCSI_INITIATOR_OID 1098 * (value of 1) at the beginning of time. 1099 */ 1100 uint32_t hba_oid; 1101 1102 /* 1103 * Keep track of which events have been sent. User daemons request 1104 * this information so they don't wait for events which they won't 1105 * see. 1106 */ 1107 kmutex_t hba_discovery_events_mutex; 1108 iSCSIDiscoveryMethod_t hba_discovery_events; 1109 boolean_t hba_discovery_in_progress; 1110 1111 boolean_t hba_mpxio_enabled; /* mpxio-enabled */ 1112 /* if the persistent store is loaded */ 1113 boolean_t hba_persistent_loaded; 1114 1115 /* 1116 * Ensures only one SendTargets operation occurs at a time 1117 */ 1118 ksema_t hba_sendtgts_semaphore; 1119 1120 /* 1121 * Statistics 1122 */ 1123 struct { 1124 kstat_t *ks; 1125 iscsi_hba_stats_t ks_data; 1126 } stats; 1127 1128 /* 1129 * track/control the service status and client 1130 * 1131 * service- service online ensures the operational of cli 1132 * - and the availability of iSCSI discovery/devices 1133 * - so obviously offline means the unusable of cli 1134 * - , disabling of all discovery methods and to offline 1135 * - all discovered devices 1136 * 1137 * client - here the client actually means 'exclusive client' 1138 * - for operations these clients take may conflict 1139 * - with the changing of service status and therefore 1140 * - need to be exclusive 1141 * 1142 * The service has three status: 1143 * ISCSI_SERVICE_ENABLED - client is permitted to 1144 * - request service 1145 * 1146 * ISCSI_SERVICE_DISABLED - client is not permitted to 1147 * - request service 1148 * 1149 * ISCSI_SERVICE_TRANSITION - client must wait for 1150 * - one of above two statuses 1151 * 1152 * The hba_service_client_count tracks the number of 1153 * current clients, it increases with new clients and decreases 1154 * with leaving clients. It stops to increase once the 1155 * ISCSI_SERVICE_TRANSITION is set, and causes later clients be 1156 * blocked there. 1157 * 1158 * The status of the service can only be changed when the number 1159 * of current clients reaches zero. 1160 * 1161 * Clients include: 1162 * iscsi_ioctl 1163 * iscsi_tran_bus_config 1164 * iscsi_tran_bus_unconfig 1165 * isns_scn_callback 1166 */ 1167 kmutex_t hba_service_lock; 1168 kcondvar_t hba_service_cv; 1169 uint32_t hba_service_status; 1170 uint32_t hba_service_client_count; 1171 1172 /* Default HBA tunable settings */ 1173 iscsi_tunable_params_t hba_tunable_params; 1174 boolean_t hba_service_status_overwrite; 1175 } iscsi_hba_t; 1176 1177 /* 1178 * +--------------------------------------------------------------------+ 1179 * | iSCSI prototypes | 1180 * +--------------------------------------------------------------------+ 1181 */ 1182 1183 /* IDM client callback entry points */ 1184 idm_rx_pdu_cb_t iscsi_rx_scsi_rsp; 1185 idm_rx_pdu_cb_t iscsi_rx_misc_pdu; 1186 idm_rx_pdu_error_cb_t iscsi_rx_error_pdu; 1187 idm_build_hdr_cb_t iscsi_build_hdr; 1188 idm_task_cb_t iscsi_task_aborted; 1189 idm_client_notify_cb_t iscsi_client_notify; 1190 1191 /* iscsi_io.c */ 1192 int iscsi_sna_lte(uint32_t n1, uint32_t n2); 1193 char *iscsi_get_next_text(char *data, int data_length, char *curr_text); 1194 1195 void iscsi_ic_thread(iscsi_thread_t *thread, void *arg); 1196 void iscsi_tx_thread(iscsi_thread_t *thread, void *arg); 1197 void iscsi_wd_thread(iscsi_thread_t *thread, void *arg); 1198 1199 iscsi_status_t iscsi_tx_cmd(iscsi_sess_t *isp, iscsi_cmd_t *icmdp); 1200 1201 void iscsi_task_cleanup(int opcode, iscsi_cmd_t *icmdp); 1202 1203 void iscsi_handle_abort(void *arg); 1204 iscsi_status_t iscsi_handle_reset(iscsi_sess_t *isp, int level, 1205 iscsi_lun_t *ilp); 1206 iscsi_status_t iscsi_handle_logout(iscsi_conn_t *icp); 1207 iscsi_status_t iscsi_handle_passthru(iscsi_sess_t *isp, uint16_t lun, 1208 struct uscsi_cmd *ucmdp); 1209 iscsi_status_t iscsi_handle_text(iscsi_conn_t *icp, 1210 char *buf, uint32_t buf_len, uint32_t data_len, uint32_t *rx_data_len); 1211 1212 void iscsi_iodone(iscsi_sess_t *isp, iscsi_cmd_t *icmdp); 1213 1214 /* iscsi_crc.c */ 1215 uint32_t iscsi_crc32c(void *address, unsigned long length); 1216 uint32_t iscsi_crc32c_continued(void *address, unsigned long length, 1217 uint32_t crc); 1218 1219 /* iscsi_queue.c */ 1220 void iscsi_init_queue(iscsi_queue_t *queue); 1221 void iscsi_destroy_queue(iscsi_queue_t *queue); 1222 void iscsi_enqueue_pending_cmd(iscsi_sess_t *isp, iscsi_cmd_t *icmdp); 1223 void iscsi_dequeue_pending_cmd(iscsi_sess_t *isp, iscsi_cmd_t *icmdp); 1224 void iscsi_enqueue_active_cmd(iscsi_conn_t *icp, iscsi_cmd_t *icmdp); 1225 void iscsi_dequeue_active_cmd(iscsi_conn_t *icp, iscsi_cmd_t *icmdp); 1226 void iscsi_enqueue_idm_aborting_cmd(iscsi_conn_t *icp, iscsi_cmd_t *icmdp); 1227 void iscsi_dequeue_idm_aborting_cmd(iscsi_conn_t *icp, iscsi_cmd_t *icmdp); 1228 void iscsi_enqueue_completed_cmd(iscsi_sess_t *isp, iscsi_cmd_t *icmdp); 1229 iscsi_status_t iscsi_dequeue_cmd(iscsi_cmd_t **, iscsi_cmd_t **, iscsi_cmd_t *); 1230 void iscsi_move_queue(iscsi_queue_t *src_queue, iscsi_queue_t *dst_queue); 1231 void iscsi_enqueue_cmd_head(iscsi_cmd_t **, iscsi_cmd_t **, 1232 iscsi_cmd_t *); 1233 1234 /* iscsi_login.c */ 1235 iscsi_status_t iscsi_login_start(void *arg); 1236 void iscsi_login_update_state(iscsi_conn_t *icp, 1237 iscsi_login_state_t next_state); 1238 void iscsi_login_update_state_locked(iscsi_conn_t *icp, 1239 iscsi_login_state_t next_state); 1240 1241 1242 /* iscsi_stats.c */ 1243 boolean_t iscsi_hba_kstat_init(struct iscsi_hba *ihp); 1244 boolean_t iscsi_hba_kstat_term(struct iscsi_hba *ihp); 1245 boolean_t iscsi_sess_kstat_init(struct iscsi_sess *isp); 1246 boolean_t iscsi_sess_kstat_term(struct iscsi_sess *isp); 1247 boolean_t iscsi_conn_kstat_init(struct iscsi_conn *icp); 1248 void iscsi_conn_kstat_term(struct iscsi_conn *icp); 1249 1250 /* iscsi_net.c */ 1251 void iscsi_net_init(); 1252 void iscsi_net_fini(); 1253 iscsi_status_t iscsi_net_interface(boolean_t reset); 1254 1255 /* iscsi_sess.c */ 1256 iscsi_sess_t *iscsi_sess_create(iscsi_hba_t *ihp, 1257 iSCSIDiscoveryMethod_t method, struct sockaddr *addr_dsc, 1258 char *target_name, int tpgt, uchar_t isid_lsb, 1259 iscsi_sess_type_t type, uint32_t *oid); 1260 void iscsi_sess_online(void *arg); 1261 int iscsi_sess_get(uint32_t oid, iscsi_hba_t *ihp, iscsi_sess_t **ispp); 1262 iscsi_status_t iscsi_sess_destroy(iscsi_sess_t *isp); 1263 void iscsi_sess_state_machine(iscsi_sess_t *isp, iscsi_sess_event_t event); 1264 char *iscsi_sess_state_str(iscsi_sess_state_t state); 1265 boolean_t iscsi_sess_set_auth(iscsi_sess_t *isp); 1266 iscsi_status_t iscsi_sess_reserve_scsi_itt(iscsi_cmd_t *icmdp); 1267 void iscsi_sess_release_scsi_itt(iscsi_cmd_t *icmdp); 1268 iscsi_status_t iscsi_sess_reserve_itt(iscsi_sess_t *isp, iscsi_cmd_t *icmdp); 1269 void iscsi_sess_release_itt(iscsi_sess_t *isp, iscsi_cmd_t *icmdp); 1270 void iscsi_sess_redrive_io(iscsi_sess_t *isp); 1271 int iscsi_sess_get_by_target(uint32_t target_oid, iscsi_hba_t *ihp, 1272 iscsi_sess_t **ispp); 1273 1274 1275 /* iscsi_conn.c */ 1276 iscsi_status_t iscsi_conn_create(struct sockaddr *addr, iscsi_sess_t *isp, 1277 iscsi_conn_t **icpp); 1278 iscsi_status_t iscsi_conn_online(iscsi_conn_t *icp); 1279 iscsi_status_t iscsi_conn_offline(iscsi_conn_t *icp); 1280 iscsi_status_t iscsi_conn_destroy(iscsi_conn_t *icp); 1281 void iscsi_conn_set_login_min_max(iscsi_conn_t *icp, int min, int max); 1282 iscsi_status_t iscsi_conn_sync_params(iscsi_conn_t *icp); 1283 void iscsi_conn_retry(iscsi_sess_t *isp, iscsi_conn_t *icp); 1284 void iscsi_conn_update_state(iscsi_conn_t *icp, iscsi_conn_state_t next_state); 1285 void iscsi_conn_update_state_locked(iscsi_conn_t *icp, 1286 iscsi_conn_state_t next_state); 1287 1288 /* iscsi_lun.c */ 1289 iscsi_status_t iscsi_lun_create(iscsi_sess_t *isp, uint16_t lun_num, 1290 uint8_t lun_addr_type, struct scsi_inquiry *inq, char *guid); 1291 iscsi_status_t iscsi_lun_destroy(iscsi_hba_t *ihp, 1292 iscsi_lun_t *ilp); 1293 void iscsi_lun_online(iscsi_hba_t *ihp, 1294 iscsi_lun_t *ilp); 1295 iscsi_status_t iscsi_lun_offline(iscsi_hba_t *ihp, 1296 iscsi_lun_t *ilp, boolean_t lun_free); 1297 1298 /* iscsi_cmd.c */ 1299 void iscsi_cmd_state_machine(iscsi_cmd_t *icmdp, 1300 iscsi_cmd_event_t event, void *arg); 1301 iscsi_cmd_t *iscsi_cmd_alloc(iscsi_conn_t *icp, int km_flags); 1302 void iscsi_cmd_free(iscsi_cmd_t *icmdp); 1303 1304 /* iscsi_ioctl.c */ 1305 void * iscsi_ioctl_copyin(caddr_t arg, int mode, size_t size); 1306 int iscsi_ioctl_copyout(void *data, size_t size, caddr_t arg, int mode); 1307 iscsi_conn_list_t *iscsi_ioctl_conn_oid_list_get_copyin(caddr_t, int); 1308 int iscsi_ioctl_conn_oid_list_get_copyout(iscsi_conn_list_t *, caddr_t, int); 1309 boolean_t iscsi_ioctl_conn_oid_list_get(iscsi_hba_t *ihp, 1310 iscsi_conn_list_t *cl); 1311 boolean_t iscsi_ioctl_conn_props_get(iscsi_hba_t *ihp, iscsi_conn_props_t *cp); 1312 int iscsi_ioctl_sendtgts_get(iscsi_hba_t *ihp, iscsi_sendtgts_list_t *stl); 1313 int iscsi_target_prop_mod(iscsi_hba_t *, iscsi_property_t *, int cmd); 1314 int iscsi_set_params(iscsi_param_set_t *, iscsi_hba_t *, boolean_t); 1315 int iscsi_get_persisted_param(uchar_t *, iscsi_param_get_t *, 1316 iscsi_login_params_t *); 1317 void iscsi_set_default_login_params(iscsi_login_params_t *params); 1318 int iscsi_ioctl_get_config_sess(iscsi_hba_t *ihp, 1319 iscsi_config_sess_t *ics); 1320 int iscsi_ioctl_set_config_sess(iscsi_hba_t *ihp, 1321 iscsi_config_sess_t *ics); 1322 int iscsi_ioctl_set_tunable_param(iscsi_hba_t *ihp, 1323 iscsi_tunable_object_t *tpss); 1324 /* ioctls prototypes */ 1325 int iscsi_get_param(iscsi_login_params_t *params, 1326 boolean_t valid_flag, 1327 iscsi_param_get_t *ipgp); 1328 1329 /* iscsid.c */ 1330 boolean_t iscsid_init(iscsi_hba_t *ihp); 1331 boolean_t iscsid_start(iscsi_hba_t *ihp); 1332 boolean_t iscsid_stop(iscsi_hba_t *ihp); 1333 void iscsid_fini(); 1334 void iscsid_props(iSCSIDiscoveryProperties_t *props); 1335 boolean_t iscsid_enable_discovery(iscsi_hba_t *ihp, 1336 iSCSIDiscoveryMethod_t idm, boolean_t poke); 1337 boolean_t iscsid_disable_discovery(iscsi_hba_t *ihp, 1338 iSCSIDiscoveryMethod_t idm); 1339 void iscsid_poke_discovery(iscsi_hba_t *ihp, iSCSIDiscoveryMethod_t method); 1340 void iscsid_do_sendtgts(entry_t *discovery_addr); 1341 void iscsid_do_isns_query_one_server( 1342 iscsi_hba_t *ihp, entry_t *isns_addr); 1343 void iscsid_do_isns_query(iscsi_hba_t *ihp); 1344 void iscsid_config_one(iscsi_hba_t *ihp, 1345 char *name, boolean_t protect); 1346 void iscsid_config_all(iscsi_hba_t *ihp, boolean_t protect); 1347 void iscsid_unconfig_one(iscsi_hba_t *ihp, char *name); 1348 void iscsid_unconfig_all(iscsi_hba_t *ihp); 1349 void isns_scn_callback(void *arg); 1350 boolean_t iscsid_del(iscsi_hba_t *ihp, char *target_name, 1351 iSCSIDiscoveryMethod_t method, struct sockaddr *addr_dsc); 1352 boolean_t iscsid_login_tgt(iscsi_hba_t *ihp, char *target_name, 1353 iSCSIDiscoveryMethod_t method, struct sockaddr *addr_dsc); 1354 void iscsid_addr_to_sockaddr(int src_insize, void *src_addr, int src_port, 1355 struct sockaddr *dst_addr); 1356 void iscsid_set_default_initiator_node_settings(iscsi_hba_t *ihp, 1357 boolean_t minimal); 1358 1359 void iscsi_send_sysevent(iscsi_hba_t *ihp, char *eventcalss, 1360 char *subclass, nvlist_t *np); 1361 boolean_t iscsi_reconfig_boot_sess(iscsi_hba_t *ihp); 1362 boolean_t iscsi_chk_bootlun_mpxio(iscsi_hba_t *ihp); 1363 boolean_t iscsi_cmp_boot_ini_name(char *name); 1364 boolean_t iscsi_cmp_boot_tgt_name(char *name); 1365 boolean_t iscsi_client_request_service(iscsi_hba_t *ihp); 1366 void iscsi_client_release_service(iscsi_hba_t *ihp); 1367 1368 extern void bcopy(const void *s1, void *s2, size_t n); 1369 extern void bzero(void *s, size_t n); 1370 /* 1371 * Here we need a contract for inet_ntop() and inet_pton() 1372 * in uts/common/inet/ip/inet_ntop.c 1373 */ 1374 extern char *inet_ntop(int af, const void *addr, char *buf, int addrlen); 1375 extern int inet_pton(int af, char *inp, void *outp); 1376 1377 #ifdef __cplusplus 1378 } 1379 #endif 1380 1381 #endif /* _ISCSI_H */ 1382