1// SPDX-License-Identifier: GPL-2.0-or-later 2/******************************************************************************* 3 * This file contains tcm implementation using v4 configfs fabric infrastructure 4 * for QLogic target mode HBAs 5 * 6 * (c) Copyright 2010-2013 Datera, Inc. 7 * 8 * Author: Nicholas A. Bellinger <nab@daterainc.com> 9 * 10 * tcm_qla2xxx_parse_wwn() and tcm_qla2xxx_format_wwn() contains code from 11 * the TCM_FC / Open-FCoE.org fabric module. 12 * 13 * Copyright (c) 2010 Cisco Systems, Inc 14 * 15 ****************************************************************************/ 16 17 18#include <linux/module.h> 19#include <linux/utsname.h> 20#include <linux/vmalloc.h> 21#include <linux/list.h> 22#include <linux/slab.h> 23#include <linux/types.h> 24#include <linux/string.h> 25#include <linux/configfs.h> 26#include <linux/ctype.h> 27#include <asm/unaligned.h> 28#include <scsi/scsi_host.h> 29#include <target/target_core_base.h> 30#include <target/target_core_fabric.h> 31 32#include "qla_def.h" 33#include "qla_target.h" 34#include "tcm_qla2xxx.h" 35 36static struct workqueue_struct *tcm_qla2xxx_free_wq; 37 38/* 39 * Parse WWN. 40 * If strict, we require lower-case hex and colon separators to be sure 41 * the name is the same as what would be generated by ft_format_wwn() 42 * so the name and wwn are mapped one-to-one. 43 */ 44static ssize_t tcm_qla2xxx_parse_wwn(const char *name, u64 *wwn, int strict) 45{ 46 const char *cp; 47 char c; 48 u32 nibble; 49 u32 byte = 0; 50 u32 pos = 0; 51 u32 err; 52 53 *wwn = 0; 54 for (cp = name; cp < &name[TCM_QLA2XXX_NAMELEN - 1]; cp++) { 55 c = *cp; 56 if (c == '\n' && cp[1] == '\0') 57 continue; 58 if (strict && pos++ == 2 && byte++ < 7) { 59 pos = 0; 60 if (c == ':') 61 continue; 62 err = 1; 63 goto fail; 64 } 65 if (c == '\0') { 66 err = 2; 67 if (strict && byte != 8) 68 goto fail; 69 return cp - name; 70 } 71 err = 3; 72 if (isdigit(c)) 73 nibble = c - '0'; 74 else if (isxdigit(c) && (islower(c) || !strict)) 75 nibble = tolower(c) - 'a' + 10; 76 else 77 goto fail; 78 *wwn = (*wwn << 4) | nibble; 79 } 80 err = 4; 81fail: 82 pr_debug("err %u len %zu pos %u byte %u\n", 83 err, cp - name, pos, byte); 84 return -1; 85} 86 87static ssize_t tcm_qla2xxx_format_wwn(char *buf, size_t len, u64 wwn) 88{ 89 u8 b[8]; 90 91 put_unaligned_be64(wwn, b); 92 return snprintf(buf, len, 93 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x", 94 b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7]); 95} 96 97/* 98 * From drivers/scsi/scsi_transport_fc.c:fc_parse_wwn 99 */ 100static int tcm_qla2xxx_npiv_extract_wwn(const char *ns, u64 *nm) 101{ 102 unsigned int i, j; 103 u8 wwn[8]; 104 105 memset(wwn, 0, sizeof(wwn)); 106 107 /* Validate and store the new name */ 108 for (i = 0, j = 0; i < 16; i++) { 109 int value; 110 111 value = hex_to_bin(*ns++); 112 if (value >= 0) 113 j = (j << 4) | value; 114 else 115 return -EINVAL; 116 117 if (i % 2) { 118 wwn[i/2] = j & 0xff; 119 j = 0; 120 } 121 } 122 123 *nm = wwn_to_u64(wwn); 124 return 0; 125} 126 127/* 128 * This parsing logic follows drivers/scsi/scsi_transport_fc.c: 129 * store_fc_host_vport_create() 130 */ 131static int tcm_qla2xxx_npiv_parse_wwn( 132 const char *name, 133 size_t count, 134 u64 *wwpn, 135 u64 *wwnn) 136{ 137 unsigned int cnt = count; 138 int rc; 139 140 *wwpn = 0; 141 *wwnn = 0; 142 143 /* count may include a LF at end of string */ 144 if (name[cnt-1] == '\n' || name[cnt-1] == 0) 145 cnt--; 146 147 /* validate we have enough characters for WWPN */ 148 if ((cnt != (16+1+16)) || (name[16] != ':')) 149 return -EINVAL; 150 151 rc = tcm_qla2xxx_npiv_extract_wwn(&name[0], wwpn); 152 if (rc != 0) 153 return rc; 154 155 rc = tcm_qla2xxx_npiv_extract_wwn(&name[17], wwnn); 156 if (rc != 0) 157 return rc; 158 159 return 0; 160} 161 162static char *tcm_qla2xxx_get_fabric_wwn(struct se_portal_group *se_tpg) 163{ 164 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 165 struct tcm_qla2xxx_tpg, se_tpg); 166 struct tcm_qla2xxx_lport *lport = tpg->lport; 167 168 return lport->lport_naa_name; 169} 170 171static u16 tcm_qla2xxx_get_tag(struct se_portal_group *se_tpg) 172{ 173 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 174 struct tcm_qla2xxx_tpg, se_tpg); 175 return tpg->lport_tpgt; 176} 177 178static int tcm_qla2xxx_check_demo_mode(struct se_portal_group *se_tpg) 179{ 180 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 181 struct tcm_qla2xxx_tpg, se_tpg); 182 183 return tpg->tpg_attrib.generate_node_acls; 184} 185 186static int tcm_qla2xxx_check_demo_mode_cache(struct se_portal_group *se_tpg) 187{ 188 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 189 struct tcm_qla2xxx_tpg, se_tpg); 190 191 return tpg->tpg_attrib.cache_dynamic_acls; 192} 193 194static int tcm_qla2xxx_check_demo_write_protect(struct se_portal_group *se_tpg) 195{ 196 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 197 struct tcm_qla2xxx_tpg, se_tpg); 198 199 return tpg->tpg_attrib.demo_mode_write_protect; 200} 201 202static int tcm_qla2xxx_check_prod_write_protect(struct se_portal_group *se_tpg) 203{ 204 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 205 struct tcm_qla2xxx_tpg, se_tpg); 206 207 return tpg->tpg_attrib.prod_mode_write_protect; 208} 209 210static int tcm_qla2xxx_check_demo_mode_login_only(struct se_portal_group *se_tpg) 211{ 212 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 213 struct tcm_qla2xxx_tpg, se_tpg); 214 215 return tpg->tpg_attrib.demo_mode_login_only; 216} 217 218static int tcm_qla2xxx_check_prot_fabric_only(struct se_portal_group *se_tpg) 219{ 220 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 221 struct tcm_qla2xxx_tpg, se_tpg); 222 223 return tpg->tpg_attrib.fabric_prot_type; 224} 225 226static u32 tcm_qla2xxx_tpg_get_inst_index(struct se_portal_group *se_tpg) 227{ 228 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 229 struct tcm_qla2xxx_tpg, se_tpg); 230 231 return tpg->lport_tpgt; 232} 233 234static void tcm_qla2xxx_complete_mcmd(struct work_struct *work) 235{ 236 struct qla_tgt_mgmt_cmd *mcmd = container_of(work, 237 struct qla_tgt_mgmt_cmd, free_work); 238 239 transport_generic_free_cmd(&mcmd->se_cmd, 0); 240} 241 242/* 243 * Called from qla_target_template->free_mcmd(), and will call 244 * tcm_qla2xxx_release_cmd() via normal struct target_core_fabric_ops 245 * release callback. qla_hw_data->hardware_lock is expected to be held 246 */ 247static void tcm_qla2xxx_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd) 248{ 249 if (!mcmd) 250 return; 251 INIT_WORK(&mcmd->free_work, tcm_qla2xxx_complete_mcmd); 252 queue_work(tcm_qla2xxx_free_wq, &mcmd->free_work); 253} 254 255static void tcm_qla2xxx_complete_free(struct work_struct *work) 256{ 257 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 258 unsigned long flags; 259 260 cmd->cmd_in_wq = 0; 261 262 WARN_ON(cmd->trc_flags & TRC_CMD_FREE); 263 264 /* To do: protect all tgt_counters manipulations with proper locking. */ 265 cmd->qpair->tgt_counters.qla_core_ret_sta_ctio++; 266 cmd->trc_flags |= TRC_CMD_FREE; 267 cmd->cmd_sent_to_fw = 0; 268 269 spin_lock_irqsave(&cmd->sess->sess_cmd_lock, flags); 270 list_del_init(&cmd->sess_cmd_list); 271 spin_unlock_irqrestore(&cmd->sess->sess_cmd_lock, flags); 272 273 transport_generic_free_cmd(&cmd->se_cmd, 0); 274} 275 276static struct qla_tgt_cmd *tcm_qla2xxx_get_cmd(struct fc_port *sess) 277{ 278 struct se_session *se_sess = sess->se_sess; 279 struct qla_tgt_cmd *cmd; 280 int tag, cpu; 281 282 tag = sbitmap_queue_get(&se_sess->sess_tag_pool, &cpu); 283 if (tag < 0) 284 return NULL; 285 286 cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag]; 287 memset(cmd, 0, sizeof(struct qla_tgt_cmd)); 288 cmd->se_cmd.map_tag = tag; 289 cmd->se_cmd.map_cpu = cpu; 290 291 return cmd; 292} 293 294static void tcm_qla2xxx_rel_cmd(struct qla_tgt_cmd *cmd) 295{ 296 target_free_tag(cmd->sess->se_sess, &cmd->se_cmd); 297} 298 299/* 300 * Called from qla_target_template->free_cmd(), and will call 301 * tcm_qla2xxx_release_cmd via normal struct target_core_fabric_ops 302 * release callback. qla_hw_data->hardware_lock is expected to be held 303 */ 304static void tcm_qla2xxx_free_cmd(struct qla_tgt_cmd *cmd) 305{ 306 cmd->qpair->tgt_counters.core_qla_free_cmd++; 307 cmd->cmd_in_wq = 1; 308 309 WARN_ON(cmd->trc_flags & TRC_CMD_DONE); 310 cmd->trc_flags |= TRC_CMD_DONE; 311 312 INIT_WORK(&cmd->work, tcm_qla2xxx_complete_free); 313 queue_work(tcm_qla2xxx_free_wq, &cmd->work); 314} 315 316/* 317 * Called from struct target_core_fabric_ops->check_stop_free() context 318 */ 319static int tcm_qla2xxx_check_stop_free(struct se_cmd *se_cmd) 320{ 321 struct qla_tgt_cmd *cmd; 322 323 if ((se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) == 0) { 324 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd); 325 cmd->trc_flags |= TRC_CMD_CHK_STOP; 326 } 327 328 return target_put_sess_cmd(se_cmd); 329} 330 331/* tcm_qla2xxx_release_cmd - Callback from TCM Core to release underlying 332 * fabric descriptor @se_cmd command to release 333 */ 334static void tcm_qla2xxx_release_cmd(struct se_cmd *se_cmd) 335{ 336 struct qla_tgt_cmd *cmd; 337 338 if (se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) { 339 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd, 340 struct qla_tgt_mgmt_cmd, se_cmd); 341 qlt_free_mcmd(mcmd); 342 return; 343 } 344 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd); 345 346 if (WARN_ON(cmd->cmd_sent_to_fw)) 347 return; 348 349 qlt_free_cmd(cmd); 350} 351 352static void tcm_qla2xxx_release_session(struct kref *kref) 353{ 354 struct fc_port *sess = container_of(kref, 355 struct fc_port, sess_kref); 356 357 qlt_unreg_sess(sess); 358} 359 360static void tcm_qla2xxx_put_sess(struct fc_port *sess) 361{ 362 if (!sess) 363 return; 364 365 kref_put(&sess->sess_kref, tcm_qla2xxx_release_session); 366} 367 368static void tcm_qla2xxx_close_session(struct se_session *se_sess) 369{ 370 struct fc_port *sess = se_sess->fabric_sess_ptr; 371 372 BUG_ON(!sess); 373 374 target_stop_session(se_sess); 375 376 sess->explicit_logout = 1; 377 tcm_qla2xxx_put_sess(sess); 378} 379 380static int tcm_qla2xxx_write_pending(struct se_cmd *se_cmd) 381{ 382 struct qla_tgt_cmd *cmd = container_of(se_cmd, 383 struct qla_tgt_cmd, se_cmd); 384 385 if (cmd->aborted) { 386 /* Cmd can loop during Q-full. tcm_qla2xxx_aborted_task 387 * can get ahead of this cmd. tcm_qla2xxx_aborted_task 388 * already kick start the free. 389 */ 390 pr_debug("write_pending aborted cmd[%p] refcount %d " 391 "transport_state %x, t_state %x, se_cmd_flags %x\n", 392 cmd, kref_read(&cmd->se_cmd.cmd_kref), 393 cmd->se_cmd.transport_state, 394 cmd->se_cmd.t_state, 395 cmd->se_cmd.se_cmd_flags); 396 transport_generic_request_failure(&cmd->se_cmd, 397 TCM_CHECK_CONDITION_ABORT_CMD); 398 return 0; 399 } 400 cmd->trc_flags |= TRC_XFR_RDY; 401 cmd->bufflen = se_cmd->data_length; 402 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd); 403 404 cmd->sg_cnt = se_cmd->t_data_nents; 405 cmd->sg = se_cmd->t_data_sg; 406 407 cmd->prot_sg_cnt = se_cmd->t_prot_nents; 408 cmd->prot_sg = se_cmd->t_prot_sg; 409 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size; 410 se_cmd->pi_err = 0; 411 412 /* 413 * qla_target.c:qlt_rdy_to_xfer() will call dma_map_sg() to setup 414 * the SGL mappings into PCIe memory for incoming FCP WRITE data. 415 */ 416 return qlt_rdy_to_xfer(cmd); 417} 418 419static int tcm_qla2xxx_get_cmd_state(struct se_cmd *se_cmd) 420{ 421 if (!(se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB)) { 422 struct qla_tgt_cmd *cmd = container_of(se_cmd, 423 struct qla_tgt_cmd, se_cmd); 424 return cmd->state; 425 } 426 427 return 0; 428} 429 430/* 431 * Called from process context in qla_target.c:qlt_do_work() code 432 */ 433static int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd, 434 unsigned char *cdb, uint32_t data_length, int fcp_task_attr, 435 int data_dir, int bidi) 436{ 437 struct se_cmd *se_cmd = &cmd->se_cmd; 438 struct se_session *se_sess; 439 struct fc_port *sess; 440#ifdef CONFIG_TCM_QLA2XXX_DEBUG 441 struct se_portal_group *se_tpg; 442 struct tcm_qla2xxx_tpg *tpg; 443#endif 444 int rc, target_flags = TARGET_SCF_ACK_KREF; 445 unsigned long flags; 446 447 if (bidi) 448 target_flags |= TARGET_SCF_BIDI_OP; 449 450 if (se_cmd->cpuid != WORK_CPU_UNBOUND) 451 target_flags |= TARGET_SCF_USE_CPUID; 452 453 sess = cmd->sess; 454 if (!sess) { 455 pr_err("Unable to locate struct fc_port from qla_tgt_cmd\n"); 456 return -EINVAL; 457 } 458 459 se_sess = sess->se_sess; 460 if (!se_sess) { 461 pr_err("Unable to locate active struct se_session\n"); 462 return -EINVAL; 463 } 464 465#ifdef CONFIG_TCM_QLA2XXX_DEBUG 466 se_tpg = se_sess->se_tpg; 467 tpg = container_of(se_tpg, struct tcm_qla2xxx_tpg, se_tpg); 468 if (unlikely(tpg->tpg_attrib.jam_host)) { 469 /* return, and dont run target_submit_cmd,discarding command */ 470 return 0; 471 } 472#endif 473 cmd->qpair->tgt_counters.qla_core_sbt_cmd++; 474 475 spin_lock_irqsave(&sess->sess_cmd_lock, flags); 476 list_add_tail(&cmd->sess_cmd_list, &sess->sess_cmd_list); 477 spin_unlock_irqrestore(&sess->sess_cmd_lock, flags); 478 479 rc = target_init_cmd(se_cmd, se_sess, &cmd->sense_buffer[0], 480 cmd->unpacked_lun, data_length, fcp_task_attr, 481 data_dir, target_flags); 482 if (rc) 483 return rc; 484 485 if (target_submit_prep(se_cmd, cdb, NULL, 0, NULL, 0, NULL, 0, 486 GFP_KERNEL)) 487 return 0; 488 489 target_submit(se_cmd); 490 return 0; 491} 492 493static void tcm_qla2xxx_handle_data_work(struct work_struct *work) 494{ 495 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 496 497 /* 498 * Ensure that the complete FCP WRITE payload has been received. 499 * Otherwise return an exception via CHECK_CONDITION status. 500 */ 501 cmd->cmd_in_wq = 0; 502 cmd->cmd_sent_to_fw = 0; 503 if (cmd->aborted) { 504 transport_generic_request_failure(&cmd->se_cmd, 505 TCM_CHECK_CONDITION_ABORT_CMD); 506 return; 507 } 508 509 cmd->qpair->tgt_counters.qla_core_ret_ctio++; 510 if (!cmd->write_data_transferred) { 511 switch (cmd->dif_err_code) { 512 case DIF_ERR_GRD: 513 cmd->se_cmd.pi_err = 514 TCM_LOGICAL_BLOCK_GUARD_CHECK_FAILED; 515 break; 516 case DIF_ERR_REF: 517 cmd->se_cmd.pi_err = 518 TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED; 519 break; 520 case DIF_ERR_APP: 521 cmd->se_cmd.pi_err = 522 TCM_LOGICAL_BLOCK_APP_TAG_CHECK_FAILED; 523 break; 524 case DIF_ERR_NONE: 525 default: 526 break; 527 } 528 529 if (cmd->se_cmd.pi_err) 530 transport_generic_request_failure(&cmd->se_cmd, 531 cmd->se_cmd.pi_err); 532 else 533 transport_generic_request_failure(&cmd->se_cmd, 534 TCM_CHECK_CONDITION_ABORT_CMD); 535 536 return; 537 } 538 539 return target_execute_cmd(&cmd->se_cmd); 540} 541 542/* 543 * Called from qla_target.c:qlt_do_ctio_completion() 544 */ 545static void tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd) 546{ 547 cmd->trc_flags |= TRC_DATA_IN; 548 cmd->cmd_in_wq = 1; 549 INIT_WORK(&cmd->work, tcm_qla2xxx_handle_data_work); 550 queue_work(tcm_qla2xxx_free_wq, &cmd->work); 551} 552 553static int tcm_qla2xxx_chk_dif_tags(uint32_t tag) 554{ 555 return 0; 556} 557 558static int tcm_qla2xxx_dif_tags(struct qla_tgt_cmd *cmd, 559 uint16_t *pfw_prot_opts) 560{ 561 struct se_cmd *se_cmd = &cmd->se_cmd; 562 563 if (!(se_cmd->prot_checks & TARGET_DIF_CHECK_GUARD)) 564 *pfw_prot_opts |= PO_DISABLE_GUARD_CHECK; 565 566 if (!(se_cmd->prot_checks & TARGET_DIF_CHECK_APPTAG)) 567 *pfw_prot_opts |= PO_DIS_APP_TAG_VALD; 568 569 return 0; 570} 571 572/* 573 * Called from qla_target.c:qlt_issue_task_mgmt() 574 */ 575static int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *mcmd, u64 lun, 576 uint16_t tmr_func, uint32_t tag) 577{ 578 struct fc_port *sess = mcmd->sess; 579 struct se_cmd *se_cmd = &mcmd->se_cmd; 580 int transl_tmr_func = 0; 581 582 switch (tmr_func) { 583 case QLA_TGT_ABTS: 584 pr_debug("%ld: ABTS received\n", sess->vha->host_no); 585 transl_tmr_func = TMR_ABORT_TASK; 586 break; 587 case QLA_TGT_2G_ABORT_TASK: 588 pr_debug("%ld: 2G Abort Task received\n", sess->vha->host_no); 589 transl_tmr_func = TMR_ABORT_TASK; 590 break; 591 case QLA_TGT_CLEAR_ACA: 592 pr_debug("%ld: CLEAR_ACA received\n", sess->vha->host_no); 593 transl_tmr_func = TMR_CLEAR_ACA; 594 break; 595 case QLA_TGT_TARGET_RESET: 596 pr_debug("%ld: TARGET_RESET received\n", sess->vha->host_no); 597 transl_tmr_func = TMR_TARGET_WARM_RESET; 598 break; 599 case QLA_TGT_LUN_RESET: 600 pr_debug("%ld: LUN_RESET received\n", sess->vha->host_no); 601 transl_tmr_func = TMR_LUN_RESET; 602 break; 603 case QLA_TGT_CLEAR_TS: 604 pr_debug("%ld: CLEAR_TS received\n", sess->vha->host_no); 605 transl_tmr_func = TMR_CLEAR_TASK_SET; 606 break; 607 case QLA_TGT_ABORT_TS: 608 pr_debug("%ld: ABORT_TS received\n", sess->vha->host_no); 609 transl_tmr_func = TMR_ABORT_TASK_SET; 610 break; 611 default: 612 pr_debug("%ld: Unknown task mgmt fn 0x%x\n", 613 sess->vha->host_no, tmr_func); 614 return -ENOSYS; 615 } 616 617 return target_submit_tmr(se_cmd, sess->se_sess, NULL, lun, mcmd, 618 transl_tmr_func, GFP_ATOMIC, tag, TARGET_SCF_ACK_KREF); 619} 620 621static struct qla_tgt_cmd *tcm_qla2xxx_find_cmd_by_tag(struct fc_port *sess, 622 uint64_t tag) 623{ 624 struct qla_tgt_cmd *cmd; 625 unsigned long flags; 626 627 if (!sess->se_sess) 628 return NULL; 629 630 spin_lock_irqsave(&sess->sess_cmd_lock, flags); 631 list_for_each_entry(cmd, &sess->sess_cmd_list, sess_cmd_list) { 632 if (cmd->se_cmd.tag == tag) 633 goto done; 634 } 635 cmd = NULL; 636done: 637 spin_unlock_irqrestore(&sess->sess_cmd_lock, flags); 638 639 return cmd; 640} 641 642static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd) 643{ 644 struct qla_tgt_cmd *cmd = container_of(se_cmd, 645 struct qla_tgt_cmd, se_cmd); 646 647 if (cmd->aborted) { 648 /* Cmd can loop during Q-full. tcm_qla2xxx_aborted_task 649 * can get ahead of this cmd. tcm_qla2xxx_aborted_task 650 * already kick start the free. 651 */ 652 pr_debug("queue_data_in aborted cmd[%p] refcount %d " 653 "transport_state %x, t_state %x, se_cmd_flags %x\n", 654 cmd, kref_read(&cmd->se_cmd.cmd_kref), 655 cmd->se_cmd.transport_state, 656 cmd->se_cmd.t_state, 657 cmd->se_cmd.se_cmd_flags); 658 return 0; 659 } 660 661 cmd->trc_flags |= TRC_XMIT_DATA; 662 cmd->bufflen = se_cmd->data_length; 663 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd); 664 665 cmd->sg_cnt = se_cmd->t_data_nents; 666 cmd->sg = se_cmd->t_data_sg; 667 cmd->offset = 0; 668 669 cmd->prot_sg_cnt = se_cmd->t_prot_nents; 670 cmd->prot_sg = se_cmd->t_prot_sg; 671 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size; 672 se_cmd->pi_err = 0; 673 674 /* 675 * Now queue completed DATA_IN the qla2xxx LLD and response ring 676 */ 677 return qlt_xmit_response(cmd, QLA_TGT_XMIT_DATA|QLA_TGT_XMIT_STATUS, 678 se_cmd->scsi_status); 679} 680 681static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd) 682{ 683 struct qla_tgt_cmd *cmd = container_of(se_cmd, 684 struct qla_tgt_cmd, se_cmd); 685 int xmit_type = QLA_TGT_XMIT_STATUS; 686 687 if (cmd->aborted) { 688 /* 689 * Cmd can loop during Q-full. tcm_qla2xxx_aborted_task 690 * can get ahead of this cmd. tcm_qla2xxx_aborted_task 691 * already kick start the free. 692 */ 693 pr_debug( 694 "queue_data_in aborted cmd[%p] refcount %d transport_state %x, t_state %x, se_cmd_flags %x\n", 695 cmd, kref_read(&cmd->se_cmd.cmd_kref), 696 cmd->se_cmd.transport_state, cmd->se_cmd.t_state, 697 cmd->se_cmd.se_cmd_flags); 698 return 0; 699 } 700 cmd->bufflen = se_cmd->data_length; 701 cmd->sg = NULL; 702 cmd->sg_cnt = 0; 703 cmd->offset = 0; 704 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd); 705 cmd->trc_flags |= TRC_XMIT_STATUS; 706 707 if (se_cmd->data_direction == DMA_FROM_DEVICE) { 708 /* 709 * For FCP_READ with CHECK_CONDITION status, clear cmd->bufflen 710 * for qla_tgt_xmit_response LLD code 711 */ 712 if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) { 713 se_cmd->se_cmd_flags &= ~SCF_OVERFLOW_BIT; 714 se_cmd->residual_count = 0; 715 } 716 se_cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT; 717 se_cmd->residual_count += se_cmd->data_length; 718 719 cmd->bufflen = 0; 720 } 721 /* 722 * Now queue status response to qla2xxx LLD code and response ring 723 */ 724 return qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status); 725} 726 727static void tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd) 728{ 729 struct se_tmr_req *se_tmr = se_cmd->se_tmr_req; 730 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd, 731 struct qla_tgt_mgmt_cmd, se_cmd); 732 733 pr_debug("queue_tm_rsp: mcmd: %p func: 0x%02x response: 0x%02x\n", 734 mcmd, se_tmr->function, se_tmr->response); 735 /* 736 * Do translation between TCM TM response codes and 737 * QLA2xxx FC TM response codes. 738 */ 739 switch (se_tmr->response) { 740 case TMR_FUNCTION_COMPLETE: 741 mcmd->fc_tm_rsp = FC_TM_SUCCESS; 742 break; 743 case TMR_TASK_DOES_NOT_EXIST: 744 mcmd->fc_tm_rsp = FC_TM_BAD_CMD; 745 break; 746 case TMR_FUNCTION_REJECTED: 747 mcmd->fc_tm_rsp = FC_TM_REJECT; 748 break; 749 case TMR_LUN_DOES_NOT_EXIST: 750 default: 751 mcmd->fc_tm_rsp = FC_TM_FAILED; 752 break; 753 } 754 /* 755 * Queue the TM response to QLA2xxx LLD to build a 756 * CTIO response packet. 757 */ 758 qlt_xmit_tm_rsp(mcmd); 759} 760 761static void tcm_qla2xxx_aborted_task(struct se_cmd *se_cmd) 762{ 763 struct qla_tgt_cmd *cmd; 764 unsigned long flags; 765 766 if (se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) 767 return; 768 769 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd); 770 771 spin_lock_irqsave(&cmd->sess->sess_cmd_lock, flags); 772 list_del_init(&cmd->sess_cmd_list); 773 spin_unlock_irqrestore(&cmd->sess->sess_cmd_lock, flags); 774 775 qlt_abort_cmd(cmd); 776} 777 778static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *, 779 struct tcm_qla2xxx_nacl *, struct fc_port *); 780/* 781 * Expected to be called with struct qla_hw_data->tgt.sess_lock held 782 */ 783static void tcm_qla2xxx_clear_nacl_from_fcport_map(struct fc_port *sess) 784{ 785 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl; 786 struct se_portal_group *se_tpg = se_nacl->se_tpg; 787 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn; 788 struct tcm_qla2xxx_lport *lport = container_of(se_wwn, 789 struct tcm_qla2xxx_lport, lport_wwn); 790 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl, 791 struct tcm_qla2xxx_nacl, se_node_acl); 792 void *node; 793 794 pr_debug("fc_rport domain: port_id 0x%06x\n", nacl->nport_id); 795 796 node = btree_remove32(&lport->lport_fcport_map, nacl->nport_id); 797 if (WARN_ON(node && (node != se_nacl))) { 798 /* 799 * The nacl no longer matches what we think it should be. 800 * Most likely a new dynamic acl has been added while 801 * someone dropped the hardware lock. It clearly is a 802 * bug elsewhere, but this bit can't make things worse. 803 */ 804 btree_insert32(&lport->lport_fcport_map, nacl->nport_id, 805 node, GFP_ATOMIC); 806 } 807 808 pr_debug("Removed from fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%06x\n", 809 se_nacl, nacl->nport_wwnn, nacl->nport_id); 810 /* 811 * Now clear the se_nacl and session pointers from our HW lport lookup 812 * table mapping for this initiator's fabric S_ID and LOOP_ID entries. 813 * 814 * This is done ahead of callbacks into tcm_qla2xxx_free_session() -> 815 * target_wait_for_sess_cmds() before the session waits for outstanding 816 * I/O to complete, to avoid a race between session shutdown execution 817 * and incoming ATIOs or TMRs picking up a stale se_node_act reference. 818 */ 819 tcm_qla2xxx_clear_sess_lookup(lport, nacl, sess); 820} 821 822static void tcm_qla2xxx_shutdown_sess(struct fc_port *sess) 823{ 824 target_stop_session(sess->se_sess); 825} 826 827static int tcm_qla2xxx_init_nodeacl(struct se_node_acl *se_nacl, 828 const char *name) 829{ 830 struct tcm_qla2xxx_nacl *nacl = 831 container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 832 u64 wwnn; 833 834 if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0) 835 return -EINVAL; 836 837 nacl->nport_wwnn = wwnn; 838 tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn); 839 840 return 0; 841} 842 843/* Start items for tcm_qla2xxx_tpg_attrib_cit */ 844 845#define DEF_QLA_TPG_ATTRIB(name) \ 846 \ 847static ssize_t tcm_qla2xxx_tpg_attrib_##name##_show( \ 848 struct config_item *item, char *page) \ 849{ \ 850 struct se_portal_group *se_tpg = attrib_to_tpg(item); \ 851 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \ 852 struct tcm_qla2xxx_tpg, se_tpg); \ 853 \ 854 return sprintf(page, "%d\n", tpg->tpg_attrib.name); \ 855} \ 856 \ 857static ssize_t tcm_qla2xxx_tpg_attrib_##name##_store( \ 858 struct config_item *item, const char *page, size_t count) \ 859{ \ 860 struct se_portal_group *se_tpg = attrib_to_tpg(item); \ 861 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \ 862 struct tcm_qla2xxx_tpg, se_tpg); \ 863 struct tcm_qla2xxx_tpg_attrib *a = &tpg->tpg_attrib; \ 864 unsigned long val; \ 865 int ret; \ 866 \ 867 ret = kstrtoul(page, 0, &val); \ 868 if (ret < 0) { \ 869 pr_err("kstrtoul() failed with" \ 870 " ret: %d\n", ret); \ 871 return -EINVAL; \ 872 } \ 873 \ 874 if ((val != 0) && (val != 1)) { \ 875 pr_err("Illegal boolean value %lu\n", val); \ 876 return -EINVAL; \ 877 } \ 878 \ 879 a->name = val; \ 880 \ 881 return count; \ 882} \ 883CONFIGFS_ATTR(tcm_qla2xxx_tpg_attrib_, name) 884 885DEF_QLA_TPG_ATTRIB(generate_node_acls); 886DEF_QLA_TPG_ATTRIB(cache_dynamic_acls); 887DEF_QLA_TPG_ATTRIB(demo_mode_write_protect); 888DEF_QLA_TPG_ATTRIB(prod_mode_write_protect); 889DEF_QLA_TPG_ATTRIB(demo_mode_login_only); 890#ifdef CONFIG_TCM_QLA2XXX_DEBUG 891DEF_QLA_TPG_ATTRIB(jam_host); 892#endif 893 894static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = { 895 &tcm_qla2xxx_tpg_attrib_attr_generate_node_acls, 896 &tcm_qla2xxx_tpg_attrib_attr_cache_dynamic_acls, 897 &tcm_qla2xxx_tpg_attrib_attr_demo_mode_write_protect, 898 &tcm_qla2xxx_tpg_attrib_attr_prod_mode_write_protect, 899 &tcm_qla2xxx_tpg_attrib_attr_demo_mode_login_only, 900#ifdef CONFIG_TCM_QLA2XXX_DEBUG 901 &tcm_qla2xxx_tpg_attrib_attr_jam_host, 902#endif 903 NULL, 904}; 905 906/* End items for tcm_qla2xxx_tpg_attrib_cit */ 907 908static int tcm_qla2xxx_enable_tpg(struct se_portal_group *se_tpg, 909 bool enable) 910{ 911 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn; 912 struct tcm_qla2xxx_lport *lport = container_of(se_wwn, 913 struct tcm_qla2xxx_lport, lport_wwn); 914 struct scsi_qla_host *vha = lport->qla_vha; 915 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 916 struct tcm_qla2xxx_tpg, se_tpg); 917 918 if (enable) { 919 if (atomic_read(&tpg->lport_tpg_enabled)) 920 return -EEXIST; 921 922 atomic_set(&tpg->lport_tpg_enabled, 1); 923 qlt_enable_vha(vha); 924 } else { 925 if (!atomic_read(&tpg->lport_tpg_enabled)) 926 return 0; 927 928 atomic_set(&tpg->lport_tpg_enabled, 0); 929 qlt_stop_phase1(vha->vha_tgt.qla_tgt); 930 qlt_stop_phase2(vha->vha_tgt.qla_tgt); 931 } 932 933 return 0; 934} 935 936static ssize_t tcm_qla2xxx_tpg_dynamic_sessions_show(struct config_item *item, 937 char *page) 938{ 939 return target_show_dynamic_sessions(to_tpg(item), page); 940} 941 942static ssize_t tcm_qla2xxx_tpg_fabric_prot_type_store(struct config_item *item, 943 const char *page, size_t count) 944{ 945 struct se_portal_group *se_tpg = to_tpg(item); 946 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 947 struct tcm_qla2xxx_tpg, se_tpg); 948 unsigned long val; 949 int ret = kstrtoul(page, 0, &val); 950 951 if (ret) { 952 pr_err("kstrtoul() returned %d for fabric_prot_type\n", ret); 953 return ret; 954 } 955 if (val != 0 && val != 1 && val != 3) { 956 pr_err("Invalid qla2xxx fabric_prot_type: %lu\n", val); 957 return -EINVAL; 958 } 959 tpg->tpg_attrib.fabric_prot_type = val; 960 961 return count; 962} 963 964static ssize_t tcm_qla2xxx_tpg_fabric_prot_type_show(struct config_item *item, 965 char *page) 966{ 967 struct se_portal_group *se_tpg = to_tpg(item); 968 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 969 struct tcm_qla2xxx_tpg, se_tpg); 970 971 return sprintf(page, "%d\n", tpg->tpg_attrib.fabric_prot_type); 972} 973 974CONFIGFS_ATTR_RO(tcm_qla2xxx_tpg_, dynamic_sessions); 975CONFIGFS_ATTR(tcm_qla2xxx_tpg_, fabric_prot_type); 976 977static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = { 978 &tcm_qla2xxx_tpg_attr_dynamic_sessions, 979 &tcm_qla2xxx_tpg_attr_fabric_prot_type, 980 NULL, 981}; 982 983static struct se_portal_group *tcm_qla2xxx_make_tpg(struct se_wwn *wwn, 984 const char *name) 985{ 986 struct tcm_qla2xxx_lport *lport = container_of(wwn, 987 struct tcm_qla2xxx_lport, lport_wwn); 988 struct tcm_qla2xxx_tpg *tpg; 989 unsigned long tpgt; 990 int ret; 991 992 if (strstr(name, "tpgt_") != name) 993 return ERR_PTR(-EINVAL); 994 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX) 995 return ERR_PTR(-EINVAL); 996 997 if ((tpgt != 1)) { 998 pr_err("In non NPIV mode, a single TPG=1 is used for HW port mappings\n"); 999 return ERR_PTR(-ENOSYS); 1000 } 1001 1002 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL); 1003 if (!tpg) { 1004 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n"); 1005 return ERR_PTR(-ENOMEM); 1006 } 1007 tpg->lport = lport; 1008 tpg->lport_tpgt = tpgt; 1009 /* 1010 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic 1011 * NodeACLs 1012 */ 1013 tpg->tpg_attrib.generate_node_acls = 1; 1014 tpg->tpg_attrib.demo_mode_write_protect = 1; 1015 tpg->tpg_attrib.cache_dynamic_acls = 1; 1016 tpg->tpg_attrib.demo_mode_login_only = 1; 1017 tpg->tpg_attrib.jam_host = 0; 1018 1019 ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP); 1020 if (ret < 0) { 1021 kfree(tpg); 1022 return NULL; 1023 } 1024 1025 lport->tpg_1 = tpg; 1026 1027 return &tpg->se_tpg; 1028} 1029 1030static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg) 1031{ 1032 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1033 struct tcm_qla2xxx_tpg, se_tpg); 1034 struct tcm_qla2xxx_lport *lport = tpg->lport; 1035 struct scsi_qla_host *vha = lport->qla_vha; 1036 /* 1037 * Call into qla2x_target.c LLD logic to shutdown the active 1038 * FC Nexuses and disable target mode operation for this qla_hw_data 1039 */ 1040 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stop) 1041 qlt_stop_phase1(vha->vha_tgt.qla_tgt); 1042 1043 core_tpg_deregister(se_tpg); 1044 /* 1045 * Clear local TPG=1 pointer for non NPIV mode. 1046 */ 1047 lport->tpg_1 = NULL; 1048 kfree(tpg); 1049} 1050 1051static int tcm_qla2xxx_npiv_enable_tpg(struct se_portal_group *se_tpg, 1052 bool enable) 1053{ 1054 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn; 1055 struct tcm_qla2xxx_lport *lport = container_of(se_wwn, 1056 struct tcm_qla2xxx_lport, lport_wwn); 1057 struct scsi_qla_host *vha = lport->qla_vha; 1058 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1059 struct tcm_qla2xxx_tpg, se_tpg); 1060 1061 if (enable) { 1062 if (atomic_read(&tpg->lport_tpg_enabled)) 1063 return -EEXIST; 1064 1065 atomic_set(&tpg->lport_tpg_enabled, 1); 1066 qlt_enable_vha(vha); 1067 } else { 1068 if (!atomic_read(&tpg->lport_tpg_enabled)) 1069 return 0; 1070 1071 atomic_set(&tpg->lport_tpg_enabled, 0); 1072 qlt_stop_phase1(vha->vha_tgt.qla_tgt); 1073 qlt_stop_phase2(vha->vha_tgt.qla_tgt); 1074 } 1075 1076 return 0; 1077} 1078 1079static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg(struct se_wwn *wwn, 1080 const char *name) 1081{ 1082 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1083 struct tcm_qla2xxx_lport, lport_wwn); 1084 struct tcm_qla2xxx_tpg *tpg; 1085 unsigned long tpgt; 1086 int ret; 1087 1088 if (strstr(name, "tpgt_") != name) 1089 return ERR_PTR(-EINVAL); 1090 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX) 1091 return ERR_PTR(-EINVAL); 1092 1093 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL); 1094 if (!tpg) { 1095 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n"); 1096 return ERR_PTR(-ENOMEM); 1097 } 1098 tpg->lport = lport; 1099 tpg->lport_tpgt = tpgt; 1100 1101 /* 1102 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic 1103 * NodeACLs 1104 */ 1105 tpg->tpg_attrib.generate_node_acls = 1; 1106 tpg->tpg_attrib.demo_mode_write_protect = 1; 1107 tpg->tpg_attrib.cache_dynamic_acls = 1; 1108 tpg->tpg_attrib.demo_mode_login_only = 1; 1109 1110 ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP); 1111 if (ret < 0) { 1112 kfree(tpg); 1113 return NULL; 1114 } 1115 lport->tpg_1 = tpg; 1116 return &tpg->se_tpg; 1117} 1118 1119/* 1120 * Expected to be called with struct qla_hw_data->tgt.sess_lock held 1121 */ 1122static struct fc_port *tcm_qla2xxx_find_sess_by_s_id(scsi_qla_host_t *vha, 1123 const be_id_t s_id) 1124{ 1125 struct tcm_qla2xxx_lport *lport; 1126 struct se_node_acl *se_nacl; 1127 struct tcm_qla2xxx_nacl *nacl; 1128 u32 key; 1129 1130 lport = vha->vha_tgt.target_lport_ptr; 1131 if (!lport) { 1132 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1133 dump_stack(); 1134 return NULL; 1135 } 1136 1137 key = sid_to_key(s_id); 1138 pr_debug("find_sess_by_s_id: 0x%06x\n", key); 1139 1140 se_nacl = btree_lookup32(&lport->lport_fcport_map, key); 1141 if (!se_nacl) { 1142 pr_debug("Unable to locate s_id: 0x%06x\n", key); 1143 return NULL; 1144 } 1145 pr_debug("find_sess_by_s_id: located se_nacl: %p, initiatorname: %s\n", 1146 se_nacl, se_nacl->initiatorname); 1147 1148 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1149 if (!nacl->fc_port) { 1150 pr_err("Unable to locate struct fc_port\n"); 1151 return NULL; 1152 } 1153 1154 return nacl->fc_port; 1155} 1156 1157/* 1158 * Expected to be called with struct qla_hw_data->tgt.sess_lock held 1159 */ 1160static void tcm_qla2xxx_set_sess_by_s_id( 1161 struct tcm_qla2xxx_lport *lport, 1162 struct se_node_acl *new_se_nacl, 1163 struct tcm_qla2xxx_nacl *nacl, 1164 struct se_session *se_sess, 1165 struct fc_port *fc_port, 1166 be_id_t s_id) 1167{ 1168 u32 key; 1169 void *slot; 1170 int rc; 1171 1172 key = sid_to_key(s_id); 1173 pr_debug("set_sess_by_s_id: %06x\n", key); 1174 1175 slot = btree_lookup32(&lport->lport_fcport_map, key); 1176 if (!slot) { 1177 if (new_se_nacl) { 1178 pr_debug("Setting up new fc_port entry to new_se_nacl\n"); 1179 nacl->nport_id = key; 1180 rc = btree_insert32(&lport->lport_fcport_map, key, 1181 new_se_nacl, GFP_ATOMIC); 1182 if (rc) 1183 printk(KERN_ERR "Unable to insert s_id into fcport_map: %06x\n", 1184 (int)key); 1185 } else { 1186 pr_debug("Wiping nonexisting fc_port entry\n"); 1187 } 1188 1189 fc_port->se_sess = se_sess; 1190 nacl->fc_port = fc_port; 1191 return; 1192 } 1193 1194 if (nacl->fc_port) { 1195 if (new_se_nacl == NULL) { 1196 pr_debug("Clearing existing nacl->fc_port and fc_port entry\n"); 1197 btree_remove32(&lport->lport_fcport_map, key); 1198 nacl->fc_port = NULL; 1199 return; 1200 } 1201 pr_debug("Replacing existing nacl->fc_port and fc_port entry\n"); 1202 btree_update32(&lport->lport_fcport_map, key, new_se_nacl); 1203 fc_port->se_sess = se_sess; 1204 nacl->fc_port = fc_port; 1205 return; 1206 } 1207 1208 if (new_se_nacl == NULL) { 1209 pr_debug("Clearing existing fc_port entry\n"); 1210 btree_remove32(&lport->lport_fcport_map, key); 1211 return; 1212 } 1213 1214 pr_debug("Replacing existing fc_port entry w/o active nacl->fc_port\n"); 1215 btree_update32(&lport->lport_fcport_map, key, new_se_nacl); 1216 fc_port->se_sess = se_sess; 1217 nacl->fc_port = fc_port; 1218 1219 pr_debug("Setup nacl->fc_port %p by s_id for se_nacl: %p, initiatorname: %s\n", 1220 nacl->fc_port, new_se_nacl, new_se_nacl->initiatorname); 1221} 1222 1223/* 1224 * Expected to be called with struct qla_hw_data->tgt.sess_lock held 1225 */ 1226static struct fc_port *tcm_qla2xxx_find_sess_by_loop_id( 1227 scsi_qla_host_t *vha, 1228 const uint16_t loop_id) 1229{ 1230 struct tcm_qla2xxx_lport *lport; 1231 struct se_node_acl *se_nacl; 1232 struct tcm_qla2xxx_nacl *nacl; 1233 struct tcm_qla2xxx_fc_loopid *fc_loopid; 1234 1235 lport = vha->vha_tgt.target_lport_ptr; 1236 if (!lport) { 1237 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1238 dump_stack(); 1239 return NULL; 1240 } 1241 1242 pr_debug("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id); 1243 1244 fc_loopid = lport->lport_loopid_map + loop_id; 1245 se_nacl = fc_loopid->se_nacl; 1246 if (!se_nacl) { 1247 pr_debug("Unable to locate se_nacl by loop_id: 0x%04x\n", 1248 loop_id); 1249 return NULL; 1250 } 1251 1252 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1253 1254 if (!nacl->fc_port) { 1255 pr_err("Unable to locate struct fc_port\n"); 1256 return NULL; 1257 } 1258 1259 return nacl->fc_port; 1260} 1261 1262/* 1263 * Expected to be called with struct qla_hw_data->tgt.sess_lock held 1264 */ 1265static void tcm_qla2xxx_set_sess_by_loop_id( 1266 struct tcm_qla2xxx_lport *lport, 1267 struct se_node_acl *new_se_nacl, 1268 struct tcm_qla2xxx_nacl *nacl, 1269 struct se_session *se_sess, 1270 struct fc_port *fc_port, 1271 uint16_t loop_id) 1272{ 1273 struct se_node_acl *saved_nacl; 1274 struct tcm_qla2xxx_fc_loopid *fc_loopid; 1275 1276 pr_debug("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id); 1277 1278 fc_loopid = &((struct tcm_qla2xxx_fc_loopid *) 1279 lport->lport_loopid_map)[loop_id]; 1280 1281 saved_nacl = fc_loopid->se_nacl; 1282 if (!saved_nacl) { 1283 pr_debug("Setting up new fc_loopid->se_nacl to new_se_nacl\n"); 1284 fc_loopid->se_nacl = new_se_nacl; 1285 if (fc_port->se_sess != se_sess) 1286 fc_port->se_sess = se_sess; 1287 if (nacl->fc_port != fc_port) 1288 nacl->fc_port = fc_port; 1289 return; 1290 } 1291 1292 if (nacl->fc_port) { 1293 if (new_se_nacl == NULL) { 1294 pr_debug("Clearing nacl->fc_port and fc_loopid->se_nacl\n"); 1295 fc_loopid->se_nacl = NULL; 1296 nacl->fc_port = NULL; 1297 return; 1298 } 1299 1300 pr_debug("Replacing existing nacl->fc_port and fc_loopid->se_nacl\n"); 1301 fc_loopid->se_nacl = new_se_nacl; 1302 if (fc_port->se_sess != se_sess) 1303 fc_port->se_sess = se_sess; 1304 if (nacl->fc_port != fc_port) 1305 nacl->fc_port = fc_port; 1306 return; 1307 } 1308 1309 if (new_se_nacl == NULL) { 1310 pr_debug("Clearing fc_loopid->se_nacl\n"); 1311 fc_loopid->se_nacl = NULL; 1312 return; 1313 } 1314 1315 pr_debug("Replacing existing fc_loopid->se_nacl w/o active nacl->fc_port\n"); 1316 fc_loopid->se_nacl = new_se_nacl; 1317 if (fc_port->se_sess != se_sess) 1318 fc_port->se_sess = se_sess; 1319 if (nacl->fc_port != fc_port) 1320 nacl->fc_port = fc_port; 1321 1322 pr_debug("Setup nacl->fc_port %p by loop_id for se_nacl: %p, initiatorname: %s\n", 1323 nacl->fc_port, new_se_nacl, new_se_nacl->initiatorname); 1324} 1325 1326/* 1327 * Should always be called with qla_hw_data->tgt.sess_lock held. 1328 */ 1329static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *lport, 1330 struct tcm_qla2xxx_nacl *nacl, struct fc_port *sess) 1331{ 1332 struct se_session *se_sess = sess->se_sess; 1333 1334 tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess, 1335 sess, port_id_to_be_id(sess->d_id)); 1336 tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess, 1337 sess, sess->loop_id); 1338} 1339 1340static void tcm_qla2xxx_free_session(struct fc_port *sess) 1341{ 1342 struct qla_tgt *tgt = sess->tgt; 1343 struct qla_hw_data *ha = tgt->ha; 1344 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev); 1345 struct se_session *se_sess; 1346 struct tcm_qla2xxx_lport *lport; 1347 1348 se_sess = sess->se_sess; 1349 if (!se_sess) { 1350 pr_err("struct fc_port->se_sess is NULL\n"); 1351 dump_stack(); 1352 return; 1353 } 1354 1355 lport = vha->vha_tgt.target_lport_ptr; 1356 if (!lport) { 1357 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1358 dump_stack(); 1359 return; 1360 } 1361 target_wait_for_sess_cmds(se_sess); 1362 1363 target_remove_session(se_sess); 1364} 1365 1366static int tcm_qla2xxx_session_cb(struct se_portal_group *se_tpg, 1367 struct se_session *se_sess, void *p) 1368{ 1369 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1370 struct tcm_qla2xxx_tpg, se_tpg); 1371 struct tcm_qla2xxx_lport *lport = tpg->lport; 1372 struct qla_hw_data *ha = lport->qla_vha->hw; 1373 struct se_node_acl *se_nacl = se_sess->se_node_acl; 1374 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl, 1375 struct tcm_qla2xxx_nacl, se_node_acl); 1376 struct fc_port *qlat_sess = p; 1377 uint16_t loop_id = qlat_sess->loop_id; 1378 unsigned long flags; 1379 1380 /* 1381 * And now setup se_nacl and session pointers into HW lport internal 1382 * mappings for fabric S_ID and LOOP_ID. 1383 */ 1384 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1385 tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl, se_sess, qlat_sess, 1386 port_id_to_be_id(qlat_sess->d_id)); 1387 tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl, 1388 se_sess, qlat_sess, loop_id); 1389 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1390 1391 return 0; 1392} 1393 1394/* 1395 * Called via qlt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl() 1396 * to locate struct se_node_acl 1397 */ 1398static int tcm_qla2xxx_check_initiator_node_acl( 1399 scsi_qla_host_t *vha, 1400 unsigned char *fc_wwpn, 1401 struct fc_port *qlat_sess) 1402{ 1403 struct qla_hw_data *ha = vha->hw; 1404 struct tcm_qla2xxx_lport *lport; 1405 struct tcm_qla2xxx_tpg *tpg; 1406 struct se_session *se_sess; 1407 unsigned char port_name[36]; 1408 int num_tags = (ha->cur_fw_xcb_count) ? ha->cur_fw_xcb_count : 1409 TCM_QLA2XXX_DEFAULT_TAGS; 1410 1411 lport = vha->vha_tgt.target_lport_ptr; 1412 if (!lport) { 1413 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1414 dump_stack(); 1415 return -EINVAL; 1416 } 1417 /* 1418 * Locate the TPG=1 reference.. 1419 */ 1420 tpg = lport->tpg_1; 1421 if (!tpg) { 1422 pr_err("Unable to locate struct tcm_qla2xxx_lport->tpg_1\n"); 1423 return -EINVAL; 1424 } 1425 /* 1426 * Format the FCP Initiator port_name into colon seperated values to 1427 * match the format by tcm_qla2xxx explict ConfigFS NodeACLs. 1428 */ 1429 memset(&port_name, 0, 36); 1430 snprintf(port_name, sizeof(port_name), "%8phC", fc_wwpn); 1431 /* 1432 * Locate our struct se_node_acl either from an explict NodeACL created 1433 * via ConfigFS, or via running in TPG demo mode. 1434 */ 1435 se_sess = target_setup_session(&tpg->se_tpg, num_tags, 1436 sizeof(struct qla_tgt_cmd), 1437 TARGET_PROT_ALL, port_name, 1438 qlat_sess, tcm_qla2xxx_session_cb); 1439 if (IS_ERR(se_sess)) 1440 return PTR_ERR(se_sess); 1441 1442 return 0; 1443} 1444 1445static void tcm_qla2xxx_update_sess(struct fc_port *sess, port_id_t s_id, 1446 uint16_t loop_id, bool conf_compl_supported) 1447{ 1448 struct qla_tgt *tgt = sess->tgt; 1449 struct qla_hw_data *ha = tgt->ha; 1450 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev); 1451 struct tcm_qla2xxx_lport *lport = vha->vha_tgt.target_lport_ptr; 1452 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl; 1453 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl, 1454 struct tcm_qla2xxx_nacl, se_node_acl); 1455 u32 key; 1456 1457 1458 if (sess->loop_id != loop_id || sess->d_id.b24 != s_id.b24) 1459 pr_info("Updating session %p from port %8phC loop_id %d -> %d s_id %x:%x:%x -> %x:%x:%x\n", 1460 sess, sess->port_name, 1461 sess->loop_id, loop_id, sess->d_id.b.domain, 1462 sess->d_id.b.area, sess->d_id.b.al_pa, s_id.b.domain, 1463 s_id.b.area, s_id.b.al_pa); 1464 1465 if (sess->loop_id != loop_id) { 1466 /* 1467 * Because we can shuffle loop IDs around and we 1468 * update different sessions non-atomically, we might 1469 * have overwritten this session's old loop ID 1470 * already, and we might end up overwriting some other 1471 * session that will be updated later. So we have to 1472 * be extra careful and we can't warn about those things... 1473 */ 1474 if (lport->lport_loopid_map[sess->loop_id].se_nacl == se_nacl) 1475 lport->lport_loopid_map[sess->loop_id].se_nacl = NULL; 1476 1477 lport->lport_loopid_map[loop_id].se_nacl = se_nacl; 1478 1479 sess->loop_id = loop_id; 1480 } 1481 1482 if (sess->d_id.b24 != s_id.b24) { 1483 key = (((u32) sess->d_id.b.domain << 16) | 1484 ((u32) sess->d_id.b.area << 8) | 1485 ((u32) sess->d_id.b.al_pa)); 1486 1487 if (btree_lookup32(&lport->lport_fcport_map, key)) 1488 WARN(btree_remove32(&lport->lport_fcport_map, key) != 1489 se_nacl, "Found wrong se_nacl when updating s_id %x:%x:%x\n", 1490 sess->d_id.b.domain, sess->d_id.b.area, 1491 sess->d_id.b.al_pa); 1492 else 1493 WARN(1, "No lport_fcport_map entry for s_id %x:%x:%x\n", 1494 sess->d_id.b.domain, sess->d_id.b.area, 1495 sess->d_id.b.al_pa); 1496 1497 key = (((u32) s_id.b.domain << 16) | 1498 ((u32) s_id.b.area << 8) | 1499 ((u32) s_id.b.al_pa)); 1500 1501 if (btree_lookup32(&lport->lport_fcport_map, key)) { 1502 WARN(1, "Already have lport_fcport_map entry for s_id %x:%x:%x\n", 1503 s_id.b.domain, s_id.b.area, s_id.b.al_pa); 1504 btree_update32(&lport->lport_fcport_map, key, se_nacl); 1505 } else { 1506 btree_insert32(&lport->lport_fcport_map, key, se_nacl, 1507 GFP_ATOMIC); 1508 } 1509 1510 sess->d_id = s_id; 1511 nacl->nport_id = key; 1512 } 1513 1514 sess->conf_compl_supported = conf_compl_supported; 1515 1516} 1517 1518/* 1519 * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path. 1520 */ 1521static const struct qla_tgt_func_tmpl tcm_qla2xxx_template = { 1522 .find_cmd_by_tag = tcm_qla2xxx_find_cmd_by_tag, 1523 .handle_cmd = tcm_qla2xxx_handle_cmd, 1524 .handle_data = tcm_qla2xxx_handle_data, 1525 .handle_tmr = tcm_qla2xxx_handle_tmr, 1526 .get_cmd = tcm_qla2xxx_get_cmd, 1527 .rel_cmd = tcm_qla2xxx_rel_cmd, 1528 .free_cmd = tcm_qla2xxx_free_cmd, 1529 .free_mcmd = tcm_qla2xxx_free_mcmd, 1530 .free_session = tcm_qla2xxx_free_session, 1531 .update_sess = tcm_qla2xxx_update_sess, 1532 .check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl, 1533 .find_sess_by_s_id = tcm_qla2xxx_find_sess_by_s_id, 1534 .find_sess_by_loop_id = tcm_qla2xxx_find_sess_by_loop_id, 1535 .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map, 1536 .put_sess = tcm_qla2xxx_put_sess, 1537 .shutdown_sess = tcm_qla2xxx_shutdown_sess, 1538 .get_dif_tags = tcm_qla2xxx_dif_tags, 1539 .chk_dif_tags = tcm_qla2xxx_chk_dif_tags, 1540}; 1541 1542static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport) 1543{ 1544 int rc; 1545 size_t map_sz; 1546 1547 rc = btree_init32(&lport->lport_fcport_map); 1548 if (rc) { 1549 pr_err("Unable to initialize lport->lport_fcport_map btree\n"); 1550 return rc; 1551 } 1552 1553 map_sz = array_size(65536, sizeof(struct tcm_qla2xxx_fc_loopid)); 1554 1555 lport->lport_loopid_map = vzalloc(map_sz); 1556 if (!lport->lport_loopid_map) { 1557 pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n", map_sz); 1558 btree_destroy32(&lport->lport_fcport_map); 1559 return -ENOMEM; 1560 } 1561 pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n", map_sz); 1562 return 0; 1563} 1564 1565static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha, 1566 void *target_lport_ptr, 1567 u64 npiv_wwpn, u64 npiv_wwnn) 1568{ 1569 struct qla_hw_data *ha = vha->hw; 1570 struct tcm_qla2xxx_lport *lport = 1571 (struct tcm_qla2xxx_lport *)target_lport_ptr; 1572 /* 1573 * Setup tgt_ops, local pointer to vha and target_lport_ptr 1574 */ 1575 ha->tgt.tgt_ops = &tcm_qla2xxx_template; 1576 vha->vha_tgt.target_lport_ptr = target_lport_ptr; 1577 lport->qla_vha = vha; 1578 1579 return 0; 1580} 1581 1582static struct se_wwn *tcm_qla2xxx_make_lport( 1583 struct target_fabric_configfs *tf, 1584 struct config_group *group, 1585 const char *name) 1586{ 1587 struct tcm_qla2xxx_lport *lport; 1588 u64 wwpn; 1589 int ret = -ENODEV; 1590 1591 if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0) 1592 return ERR_PTR(-EINVAL); 1593 1594 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL); 1595 if (!lport) { 1596 pr_err("Unable to allocate struct tcm_qla2xxx_lport\n"); 1597 return ERR_PTR(-ENOMEM); 1598 } 1599 lport->lport_wwpn = wwpn; 1600 tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN, 1601 wwpn); 1602 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) wwpn); 1603 1604 ret = tcm_qla2xxx_init_lport(lport); 1605 if (ret != 0) 1606 goto out; 1607 1608 ret = qlt_lport_register(lport, wwpn, 0, 0, 1609 tcm_qla2xxx_lport_register_cb); 1610 if (ret != 0) 1611 goto out_lport; 1612 1613 return &lport->lport_wwn; 1614out_lport: 1615 vfree(lport->lport_loopid_map); 1616 btree_destroy32(&lport->lport_fcport_map); 1617out: 1618 kfree(lport); 1619 return ERR_PTR(ret); 1620} 1621 1622static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn) 1623{ 1624 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1625 struct tcm_qla2xxx_lport, lport_wwn); 1626 struct scsi_qla_host *vha = lport->qla_vha; 1627 struct se_node_acl *node; 1628 u32 key = 0; 1629 1630 /* 1631 * Call into qla2x_target.c LLD logic to complete the 1632 * shutdown of struct qla_tgt after the call to 1633 * qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above.. 1634 */ 1635 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stopped) 1636 qlt_stop_phase2(vha->vha_tgt.qla_tgt); 1637 1638 qlt_lport_deregister(vha); 1639 1640 vfree(lport->lport_loopid_map); 1641 btree_for_each_safe32(&lport->lport_fcport_map, key, node) 1642 btree_remove32(&lport->lport_fcport_map, key); 1643 btree_destroy32(&lport->lport_fcport_map); 1644 kfree(lport); 1645} 1646 1647static int tcm_qla2xxx_lport_register_npiv_cb(struct scsi_qla_host *base_vha, 1648 void *target_lport_ptr, 1649 u64 npiv_wwpn, u64 npiv_wwnn) 1650{ 1651 struct fc_vport *vport; 1652 struct Scsi_Host *sh = base_vha->host; 1653 struct scsi_qla_host *npiv_vha; 1654 struct tcm_qla2xxx_lport *lport = 1655 (struct tcm_qla2xxx_lport *)target_lport_ptr; 1656 struct tcm_qla2xxx_lport *base_lport = 1657 (struct tcm_qla2xxx_lport *)base_vha->vha_tgt.target_lport_ptr; 1658 struct fc_vport_identifiers vport_id; 1659 1660 if (qla_ini_mode_enabled(base_vha)) { 1661 pr_err("qla2xxx base_vha not enabled for target mode\n"); 1662 return -EPERM; 1663 } 1664 1665 if (!base_lport || !base_lport->tpg_1 || 1666 !atomic_read(&base_lport->tpg_1->lport_tpg_enabled)) { 1667 pr_err("qla2xxx base_lport or tpg_1 not available\n"); 1668 return -EPERM; 1669 } 1670 1671 memset(&vport_id, 0, sizeof(vport_id)); 1672 vport_id.port_name = npiv_wwpn; 1673 vport_id.node_name = npiv_wwnn; 1674 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR; 1675 vport_id.vport_type = FC_PORTTYPE_NPIV; 1676 vport_id.disable = false; 1677 1678 vport = fc_vport_create(sh, 0, &vport_id); 1679 if (!vport) { 1680 pr_err("fc_vport_create failed for qla2xxx_npiv\n"); 1681 return -ENODEV; 1682 } 1683 /* 1684 * Setup local pointer to NPIV vhba + target_lport_ptr 1685 */ 1686 npiv_vha = (struct scsi_qla_host *)vport->dd_data; 1687 npiv_vha->vha_tgt.target_lport_ptr = target_lport_ptr; 1688 lport->qla_vha = npiv_vha; 1689 scsi_host_get(npiv_vha->host); 1690 return 0; 1691} 1692 1693 1694static struct se_wwn *tcm_qla2xxx_npiv_make_lport( 1695 struct target_fabric_configfs *tf, 1696 struct config_group *group, 1697 const char *name) 1698{ 1699 struct tcm_qla2xxx_lport *lport; 1700 u64 phys_wwpn, npiv_wwpn, npiv_wwnn; 1701 char *p, tmp[128]; 1702 int ret; 1703 1704 snprintf(tmp, 128, "%s", name); 1705 1706 p = strchr(tmp, '@'); 1707 if (!p) { 1708 pr_err("Unable to locate NPIV '@' separator\n"); 1709 return ERR_PTR(-EINVAL); 1710 } 1711 *p++ = '\0'; 1712 1713 if (tcm_qla2xxx_parse_wwn(tmp, &phys_wwpn, 1) < 0) 1714 return ERR_PTR(-EINVAL); 1715 1716 if (tcm_qla2xxx_npiv_parse_wwn(p, strlen(p)+1, 1717 &npiv_wwpn, &npiv_wwnn) < 0) 1718 return ERR_PTR(-EINVAL); 1719 1720 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL); 1721 if (!lport) { 1722 pr_err("Unable to allocate struct tcm_qla2xxx_lport for NPIV\n"); 1723 return ERR_PTR(-ENOMEM); 1724 } 1725 lport->lport_npiv_wwpn = npiv_wwpn; 1726 lport->lport_npiv_wwnn = npiv_wwnn; 1727 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) npiv_wwpn); 1728 1729 ret = tcm_qla2xxx_init_lport(lport); 1730 if (ret != 0) 1731 goto out; 1732 1733 ret = qlt_lport_register(lport, phys_wwpn, npiv_wwpn, npiv_wwnn, 1734 tcm_qla2xxx_lport_register_npiv_cb); 1735 if (ret != 0) 1736 goto out_lport; 1737 1738 return &lport->lport_wwn; 1739out_lport: 1740 vfree(lport->lport_loopid_map); 1741 btree_destroy32(&lport->lport_fcport_map); 1742out: 1743 kfree(lport); 1744 return ERR_PTR(ret); 1745} 1746 1747static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn) 1748{ 1749 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1750 struct tcm_qla2xxx_lport, lport_wwn); 1751 struct scsi_qla_host *npiv_vha = lport->qla_vha; 1752 struct qla_hw_data *ha = npiv_vha->hw; 1753 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 1754 1755 scsi_host_put(npiv_vha->host); 1756 /* 1757 * Notify libfc that we want to release the vha->fc_vport 1758 */ 1759 fc_vport_terminate(npiv_vha->fc_vport); 1760 scsi_host_put(base_vha->host); 1761 kfree(lport); 1762} 1763 1764 1765static ssize_t tcm_qla2xxx_wwn_version_show(struct config_item *item, 1766 char *page) 1767{ 1768 return sprintf(page, 1769 "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s on %s\n", 1770 QLA2XXX_VERSION, utsname()->sysname, 1771 utsname()->machine, utsname()->release); 1772} 1773 1774CONFIGFS_ATTR_RO(tcm_qla2xxx_wwn_, version); 1775 1776static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = { 1777 &tcm_qla2xxx_wwn_attr_version, 1778 NULL, 1779}; 1780 1781static const struct target_core_fabric_ops tcm_qla2xxx_ops = { 1782 .module = THIS_MODULE, 1783 .fabric_name = "qla2xxx", 1784 .node_acl_size = sizeof(struct tcm_qla2xxx_nacl), 1785 /* 1786 * XXX: Limit assumes single page per scatter-gather-list entry. 1787 * Current maximum is ~4.9 MB per se_cmd->t_data_sg with PAGE_SIZE=4096 1788 */ 1789 .max_data_sg_nents = 1200, 1790 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn, 1791 .tpg_get_tag = tcm_qla2xxx_get_tag, 1792 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode, 1793 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache, 1794 .tpg_check_demo_mode_write_protect = 1795 tcm_qla2xxx_check_demo_write_protect, 1796 .tpg_check_prod_mode_write_protect = 1797 tcm_qla2xxx_check_prod_write_protect, 1798 .tpg_check_prot_fabric_only = tcm_qla2xxx_check_prot_fabric_only, 1799 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only, 1800 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index, 1801 .check_stop_free = tcm_qla2xxx_check_stop_free, 1802 .release_cmd = tcm_qla2xxx_release_cmd, 1803 .close_session = tcm_qla2xxx_close_session, 1804 .sess_get_initiator_sid = NULL, 1805 .write_pending = tcm_qla2xxx_write_pending, 1806 .get_cmd_state = tcm_qla2xxx_get_cmd_state, 1807 .queue_data_in = tcm_qla2xxx_queue_data_in, 1808 .queue_status = tcm_qla2xxx_queue_status, 1809 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp, 1810 .aborted_task = tcm_qla2xxx_aborted_task, 1811 /* 1812 * Setup function pointers for generic logic in 1813 * target_core_fabric_configfs.c 1814 */ 1815 .fabric_make_wwn = tcm_qla2xxx_make_lport, 1816 .fabric_drop_wwn = tcm_qla2xxx_drop_lport, 1817 .fabric_make_tpg = tcm_qla2xxx_make_tpg, 1818 .fabric_enable_tpg = tcm_qla2xxx_enable_tpg, 1819 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg, 1820 .fabric_init_nodeacl = tcm_qla2xxx_init_nodeacl, 1821 1822 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs, 1823 .tfc_tpg_base_attrs = tcm_qla2xxx_tpg_attrs, 1824 .tfc_tpg_attrib_attrs = tcm_qla2xxx_tpg_attrib_attrs, 1825 1826 .default_submit_type = TARGET_DIRECT_SUBMIT, 1827 .direct_submit_supp = 1, 1828}; 1829 1830static const struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = { 1831 .module = THIS_MODULE, 1832 .fabric_name = "qla2xxx_npiv", 1833 .node_acl_size = sizeof(struct tcm_qla2xxx_nacl), 1834 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn, 1835 .tpg_get_tag = tcm_qla2xxx_get_tag, 1836 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode, 1837 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache, 1838 .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_demo_mode, 1839 .tpg_check_prod_mode_write_protect = 1840 tcm_qla2xxx_check_prod_write_protect, 1841 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only, 1842 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index, 1843 .check_stop_free = tcm_qla2xxx_check_stop_free, 1844 .release_cmd = tcm_qla2xxx_release_cmd, 1845 .close_session = tcm_qla2xxx_close_session, 1846 .sess_get_initiator_sid = NULL, 1847 .write_pending = tcm_qla2xxx_write_pending, 1848 .get_cmd_state = tcm_qla2xxx_get_cmd_state, 1849 .queue_data_in = tcm_qla2xxx_queue_data_in, 1850 .queue_status = tcm_qla2xxx_queue_status, 1851 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp, 1852 .aborted_task = tcm_qla2xxx_aborted_task, 1853 /* 1854 * Setup function pointers for generic logic in 1855 * target_core_fabric_configfs.c 1856 */ 1857 .fabric_make_wwn = tcm_qla2xxx_npiv_make_lport, 1858 .fabric_drop_wwn = tcm_qla2xxx_npiv_drop_lport, 1859 .fabric_make_tpg = tcm_qla2xxx_npiv_make_tpg, 1860 .fabric_enable_tpg = tcm_qla2xxx_npiv_enable_tpg, 1861 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg, 1862 .fabric_init_nodeacl = tcm_qla2xxx_init_nodeacl, 1863 1864 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs, 1865 1866 .default_submit_type = TARGET_DIRECT_SUBMIT, 1867 .direct_submit_supp = 1, 1868}; 1869 1870static int tcm_qla2xxx_register_configfs(void) 1871{ 1872 int ret; 1873 1874 pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on %s\n", 1875 QLA2XXX_VERSION, utsname()->sysname, 1876 utsname()->machine, utsname()->release); 1877 1878 ret = target_register_template(&tcm_qla2xxx_ops); 1879 if (ret) 1880 return ret; 1881 1882 ret = target_register_template(&tcm_qla2xxx_npiv_ops); 1883 if (ret) 1884 goto out_fabric; 1885 1886 tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free", 1887 WQ_MEM_RECLAIM, 0); 1888 if (!tcm_qla2xxx_free_wq) { 1889 ret = -ENOMEM; 1890 goto out_fabric_npiv; 1891 } 1892 1893 return 0; 1894 1895out_fabric_npiv: 1896 target_unregister_template(&tcm_qla2xxx_npiv_ops); 1897out_fabric: 1898 target_unregister_template(&tcm_qla2xxx_ops); 1899 return ret; 1900} 1901 1902static void tcm_qla2xxx_deregister_configfs(void) 1903{ 1904 destroy_workqueue(tcm_qla2xxx_free_wq); 1905 1906 target_unregister_template(&tcm_qla2xxx_ops); 1907 target_unregister_template(&tcm_qla2xxx_npiv_ops); 1908} 1909 1910static int __init tcm_qla2xxx_init(void) 1911{ 1912 int ret; 1913 1914 BUILD_BUG_ON(sizeof(struct abts_recv_from_24xx) != 64); 1915 BUILD_BUG_ON(sizeof(struct abts_resp_from_24xx_fw) != 64); 1916 BUILD_BUG_ON(sizeof(struct atio7_fcp_cmnd) != 32); 1917 BUILD_BUG_ON(sizeof(struct atio_from_isp) != 64); 1918 BUILD_BUG_ON(sizeof(struct ba_acc_le) != 12); 1919 BUILD_BUG_ON(sizeof(struct ba_rjt_le) != 4); 1920 BUILD_BUG_ON(sizeof(struct ctio7_from_24xx) != 64); 1921 BUILD_BUG_ON(sizeof(struct ctio7_to_24xx) != 64); 1922 BUILD_BUG_ON(sizeof(struct ctio_crc2_to_fw) != 64); 1923 BUILD_BUG_ON(sizeof(struct ctio_crc_from_fw) != 64); 1924 BUILD_BUG_ON(sizeof(struct ctio_to_2xxx) != 64); 1925 BUILD_BUG_ON(sizeof(struct fcp_hdr) != 24); 1926 BUILD_BUG_ON(sizeof(struct fcp_hdr_le) != 24); 1927 BUILD_BUG_ON(sizeof(struct nack_to_isp) != 64); 1928 1929 ret = tcm_qla2xxx_register_configfs(); 1930 if (ret < 0) 1931 return ret; 1932 1933 return 0; 1934} 1935 1936static void __exit tcm_qla2xxx_exit(void) 1937{ 1938 tcm_qla2xxx_deregister_configfs(); 1939} 1940 1941MODULE_DESCRIPTION("TCM QLA24XX+ series NPIV enabled fabric driver"); 1942MODULE_LICENSE("GPL"); 1943module_init(tcm_qla2xxx_init); 1944module_exit(tcm_qla2xxx_exit); 1945