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 36 static 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 */ 44 static 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; 81 fail: 82 pr_debug("err %u len %zu pos %u byte %u\n", 83 err, cp - name, pos, byte); 84 return -1; 85 } 86 87 static 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 */ 100 static 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 */ 131 static 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 } 161 162 static 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 } 170 171 static 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 } 177 178 static 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 } 185 186 static 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 } 193 194 static 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 } 201 202 static 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 } 209 210 static 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 } 217 218 static 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 } 225 226 static 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 } 233 234 static 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 */ 247 static 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 } 254 255 static 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 } 275 276 static 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 } 293 294 static 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 */ 304 static 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_on(smp_processor_id(), tcm_qla2xxx_free_wq, &cmd->work); 314 } 315 316 /* 317 * Called from struct target_core_fabric_ops->check_stop_free() context 318 */ 319 static 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 */ 334 static 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 } 351 352 static 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 } 359 360 static 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 } 367 368 static 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 } 379 380 static u32 tcm_qla2xxx_sess_get_index(struct se_session *se_sess) 381 { 382 return 0; 383 } 384 385 static int tcm_qla2xxx_write_pending(struct se_cmd *se_cmd) 386 { 387 struct qla_tgt_cmd *cmd = container_of(se_cmd, 388 struct qla_tgt_cmd, se_cmd); 389 390 if (cmd->aborted) { 391 /* Cmd can loop during Q-full. tcm_qla2xxx_aborted_task 392 * can get ahead of this cmd. tcm_qla2xxx_aborted_task 393 * already kick start the free. 394 */ 395 pr_debug("write_pending aborted cmd[%p] refcount %d " 396 "transport_state %x, t_state %x, se_cmd_flags %x\n", 397 cmd, kref_read(&cmd->se_cmd.cmd_kref), 398 cmd->se_cmd.transport_state, 399 cmd->se_cmd.t_state, 400 cmd->se_cmd.se_cmd_flags); 401 transport_generic_request_failure(&cmd->se_cmd, 402 TCM_CHECK_CONDITION_ABORT_CMD); 403 return 0; 404 } 405 cmd->trc_flags |= TRC_XFR_RDY; 406 cmd->bufflen = se_cmd->data_length; 407 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd); 408 409 cmd->sg_cnt = se_cmd->t_data_nents; 410 cmd->sg = se_cmd->t_data_sg; 411 412 cmd->prot_sg_cnt = se_cmd->t_prot_nents; 413 cmd->prot_sg = se_cmd->t_prot_sg; 414 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size; 415 se_cmd->pi_err = 0; 416 417 /* 418 * qla_target.c:qlt_rdy_to_xfer() will call dma_map_sg() to setup 419 * the SGL mappings into PCIe memory for incoming FCP WRITE data. 420 */ 421 return qlt_rdy_to_xfer(cmd); 422 } 423 424 static void tcm_qla2xxx_set_default_node_attrs(struct se_node_acl *nacl) 425 { 426 return; 427 } 428 429 static int tcm_qla2xxx_get_cmd_state(struct se_cmd *se_cmd) 430 { 431 if (!(se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB)) { 432 struct qla_tgt_cmd *cmd = container_of(se_cmd, 433 struct qla_tgt_cmd, se_cmd); 434 return cmd->state; 435 } 436 437 return 0; 438 } 439 440 /* 441 * Called from process context in qla_target.c:qlt_do_work() code 442 */ 443 static int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd, 444 unsigned char *cdb, uint32_t data_length, int fcp_task_attr, 445 int data_dir, int bidi) 446 { 447 struct se_cmd *se_cmd = &cmd->se_cmd; 448 struct se_session *se_sess; 449 struct fc_port *sess; 450 #ifdef CONFIG_TCM_QLA2XXX_DEBUG 451 struct se_portal_group *se_tpg; 452 struct tcm_qla2xxx_tpg *tpg; 453 #endif 454 int rc, target_flags = TARGET_SCF_ACK_KREF; 455 unsigned long flags; 456 457 if (bidi) 458 target_flags |= TARGET_SCF_BIDI_OP; 459 460 if (se_cmd->cpuid != WORK_CPU_UNBOUND) 461 target_flags |= TARGET_SCF_USE_CPUID; 462 463 sess = cmd->sess; 464 if (!sess) { 465 pr_err("Unable to locate struct fc_port from qla_tgt_cmd\n"); 466 return -EINVAL; 467 } 468 469 se_sess = sess->se_sess; 470 if (!se_sess) { 471 pr_err("Unable to locate active struct se_session\n"); 472 return -EINVAL; 473 } 474 475 #ifdef CONFIG_TCM_QLA2XXX_DEBUG 476 se_tpg = se_sess->se_tpg; 477 tpg = container_of(se_tpg, struct tcm_qla2xxx_tpg, se_tpg); 478 if (unlikely(tpg->tpg_attrib.jam_host)) { 479 /* return, and dont run target_submit_cmd,discarding command */ 480 return 0; 481 } 482 #endif 483 cmd->qpair->tgt_counters.qla_core_sbt_cmd++; 484 485 spin_lock_irqsave(&sess->sess_cmd_lock, flags); 486 list_add_tail(&cmd->sess_cmd_list, &sess->sess_cmd_list); 487 spin_unlock_irqrestore(&sess->sess_cmd_lock, flags); 488 489 rc = target_init_cmd(se_cmd, se_sess, &cmd->sense_buffer[0], 490 cmd->unpacked_lun, data_length, fcp_task_attr, 491 data_dir, target_flags); 492 if (rc) 493 return rc; 494 495 if (target_submit_prep(se_cmd, cdb, NULL, 0, NULL, 0, NULL, 0, 496 GFP_KERNEL)) 497 return 0; 498 499 target_submit(se_cmd); 500 return 0; 501 } 502 503 static void tcm_qla2xxx_handle_data_work(struct work_struct *work) 504 { 505 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 506 507 /* 508 * Ensure that the complete FCP WRITE payload has been received. 509 * Otherwise return an exception via CHECK_CONDITION status. 510 */ 511 cmd->cmd_in_wq = 0; 512 cmd->cmd_sent_to_fw = 0; 513 if (cmd->aborted) { 514 transport_generic_request_failure(&cmd->se_cmd, 515 TCM_CHECK_CONDITION_ABORT_CMD); 516 return; 517 } 518 519 cmd->qpair->tgt_counters.qla_core_ret_ctio++; 520 if (!cmd->write_data_transferred) { 521 switch (cmd->dif_err_code) { 522 case DIF_ERR_GRD: 523 cmd->se_cmd.pi_err = 524 TCM_LOGICAL_BLOCK_GUARD_CHECK_FAILED; 525 break; 526 case DIF_ERR_REF: 527 cmd->se_cmd.pi_err = 528 TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED; 529 break; 530 case DIF_ERR_APP: 531 cmd->se_cmd.pi_err = 532 TCM_LOGICAL_BLOCK_APP_TAG_CHECK_FAILED; 533 break; 534 case DIF_ERR_NONE: 535 default: 536 break; 537 } 538 539 if (cmd->se_cmd.pi_err) 540 transport_generic_request_failure(&cmd->se_cmd, 541 cmd->se_cmd.pi_err); 542 else 543 transport_generic_request_failure(&cmd->se_cmd, 544 TCM_CHECK_CONDITION_ABORT_CMD); 545 546 return; 547 } 548 549 return target_execute_cmd(&cmd->se_cmd); 550 } 551 552 /* 553 * Called from qla_target.c:qlt_do_ctio_completion() 554 */ 555 static void tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd) 556 { 557 cmd->trc_flags |= TRC_DATA_IN; 558 cmd->cmd_in_wq = 1; 559 INIT_WORK(&cmd->work, tcm_qla2xxx_handle_data_work); 560 queue_work_on(smp_processor_id(), tcm_qla2xxx_free_wq, &cmd->work); 561 } 562 563 static int tcm_qla2xxx_chk_dif_tags(uint32_t tag) 564 { 565 return 0; 566 } 567 568 static int tcm_qla2xxx_dif_tags(struct qla_tgt_cmd *cmd, 569 uint16_t *pfw_prot_opts) 570 { 571 struct se_cmd *se_cmd = &cmd->se_cmd; 572 573 if (!(se_cmd->prot_checks & TARGET_DIF_CHECK_GUARD)) 574 *pfw_prot_opts |= PO_DISABLE_GUARD_CHECK; 575 576 if (!(se_cmd->prot_checks & TARGET_DIF_CHECK_APPTAG)) 577 *pfw_prot_opts |= PO_DIS_APP_TAG_VALD; 578 579 return 0; 580 } 581 582 /* 583 * Called from qla_target.c:qlt_issue_task_mgmt() 584 */ 585 static int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *mcmd, u64 lun, 586 uint16_t tmr_func, uint32_t tag) 587 { 588 struct fc_port *sess = mcmd->sess; 589 struct se_cmd *se_cmd = &mcmd->se_cmd; 590 int transl_tmr_func = 0; 591 592 switch (tmr_func) { 593 case QLA_TGT_ABTS: 594 pr_debug("%ld: ABTS received\n", sess->vha->host_no); 595 transl_tmr_func = TMR_ABORT_TASK; 596 break; 597 case QLA_TGT_2G_ABORT_TASK: 598 pr_debug("%ld: 2G Abort Task received\n", sess->vha->host_no); 599 transl_tmr_func = TMR_ABORT_TASK; 600 break; 601 case QLA_TGT_CLEAR_ACA: 602 pr_debug("%ld: CLEAR_ACA received\n", sess->vha->host_no); 603 transl_tmr_func = TMR_CLEAR_ACA; 604 break; 605 case QLA_TGT_TARGET_RESET: 606 pr_debug("%ld: TARGET_RESET received\n", sess->vha->host_no); 607 transl_tmr_func = TMR_TARGET_WARM_RESET; 608 break; 609 case QLA_TGT_LUN_RESET: 610 pr_debug("%ld: LUN_RESET received\n", sess->vha->host_no); 611 transl_tmr_func = TMR_LUN_RESET; 612 break; 613 case QLA_TGT_CLEAR_TS: 614 pr_debug("%ld: CLEAR_TS received\n", sess->vha->host_no); 615 transl_tmr_func = TMR_CLEAR_TASK_SET; 616 break; 617 case QLA_TGT_ABORT_TS: 618 pr_debug("%ld: ABORT_TS received\n", sess->vha->host_no); 619 transl_tmr_func = TMR_ABORT_TASK_SET; 620 break; 621 default: 622 pr_debug("%ld: Unknown task mgmt fn 0x%x\n", 623 sess->vha->host_no, tmr_func); 624 return -ENOSYS; 625 } 626 627 return target_submit_tmr(se_cmd, sess->se_sess, NULL, lun, mcmd, 628 transl_tmr_func, GFP_ATOMIC, tag, TARGET_SCF_ACK_KREF); 629 } 630 631 static struct qla_tgt_cmd *tcm_qla2xxx_find_cmd_by_tag(struct fc_port *sess, 632 uint64_t tag) 633 { 634 struct qla_tgt_cmd *cmd; 635 unsigned long flags; 636 637 if (!sess->se_sess) 638 return NULL; 639 640 spin_lock_irqsave(&sess->sess_cmd_lock, flags); 641 list_for_each_entry(cmd, &sess->sess_cmd_list, sess_cmd_list) { 642 if (cmd->se_cmd.tag == tag) 643 goto done; 644 } 645 cmd = NULL; 646 done: 647 spin_unlock_irqrestore(&sess->sess_cmd_lock, flags); 648 649 return cmd; 650 } 651 652 static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd) 653 { 654 struct qla_tgt_cmd *cmd = container_of(se_cmd, 655 struct qla_tgt_cmd, se_cmd); 656 657 if (cmd->aborted) { 658 /* Cmd can loop during Q-full. tcm_qla2xxx_aborted_task 659 * can get ahead of this cmd. tcm_qla2xxx_aborted_task 660 * already kick start the free. 661 */ 662 pr_debug("queue_data_in aborted cmd[%p] refcount %d " 663 "transport_state %x, t_state %x, se_cmd_flags %x\n", 664 cmd, kref_read(&cmd->se_cmd.cmd_kref), 665 cmd->se_cmd.transport_state, 666 cmd->se_cmd.t_state, 667 cmd->se_cmd.se_cmd_flags); 668 return 0; 669 } 670 671 cmd->trc_flags |= TRC_XMIT_DATA; 672 cmd->bufflen = se_cmd->data_length; 673 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd); 674 675 cmd->sg_cnt = se_cmd->t_data_nents; 676 cmd->sg = se_cmd->t_data_sg; 677 cmd->offset = 0; 678 679 cmd->prot_sg_cnt = se_cmd->t_prot_nents; 680 cmd->prot_sg = se_cmd->t_prot_sg; 681 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size; 682 se_cmd->pi_err = 0; 683 684 /* 685 * Now queue completed DATA_IN the qla2xxx LLD and response ring 686 */ 687 return qlt_xmit_response(cmd, QLA_TGT_XMIT_DATA|QLA_TGT_XMIT_STATUS, 688 se_cmd->scsi_status); 689 } 690 691 static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd) 692 { 693 struct qla_tgt_cmd *cmd = container_of(se_cmd, 694 struct qla_tgt_cmd, se_cmd); 695 int xmit_type = QLA_TGT_XMIT_STATUS; 696 697 if (cmd->aborted) { 698 /* 699 * Cmd can loop during Q-full. tcm_qla2xxx_aborted_task 700 * can get ahead of this cmd. tcm_qla2xxx_aborted_task 701 * already kick start the free. 702 */ 703 pr_debug( 704 "queue_data_in aborted cmd[%p] refcount %d transport_state %x, t_state %x, se_cmd_flags %x\n", 705 cmd, kref_read(&cmd->se_cmd.cmd_kref), 706 cmd->se_cmd.transport_state, cmd->se_cmd.t_state, 707 cmd->se_cmd.se_cmd_flags); 708 return 0; 709 } 710 cmd->bufflen = se_cmd->data_length; 711 cmd->sg = NULL; 712 cmd->sg_cnt = 0; 713 cmd->offset = 0; 714 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd); 715 cmd->trc_flags |= TRC_XMIT_STATUS; 716 717 if (se_cmd->data_direction == DMA_FROM_DEVICE) { 718 /* 719 * For FCP_READ with CHECK_CONDITION status, clear cmd->bufflen 720 * for qla_tgt_xmit_response LLD code 721 */ 722 if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) { 723 se_cmd->se_cmd_flags &= ~SCF_OVERFLOW_BIT; 724 se_cmd->residual_count = 0; 725 } 726 se_cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT; 727 se_cmd->residual_count += se_cmd->data_length; 728 729 cmd->bufflen = 0; 730 } 731 /* 732 * Now queue status response to qla2xxx LLD code and response ring 733 */ 734 return qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status); 735 } 736 737 static void tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd) 738 { 739 struct se_tmr_req *se_tmr = se_cmd->se_tmr_req; 740 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd, 741 struct qla_tgt_mgmt_cmd, se_cmd); 742 743 pr_debug("queue_tm_rsp: mcmd: %p func: 0x%02x response: 0x%02x\n", 744 mcmd, se_tmr->function, se_tmr->response); 745 /* 746 * Do translation between TCM TM response codes and 747 * QLA2xxx FC TM response codes. 748 */ 749 switch (se_tmr->response) { 750 case TMR_FUNCTION_COMPLETE: 751 mcmd->fc_tm_rsp = FC_TM_SUCCESS; 752 break; 753 case TMR_TASK_DOES_NOT_EXIST: 754 mcmd->fc_tm_rsp = FC_TM_BAD_CMD; 755 break; 756 case TMR_FUNCTION_REJECTED: 757 mcmd->fc_tm_rsp = FC_TM_REJECT; 758 break; 759 case TMR_LUN_DOES_NOT_EXIST: 760 default: 761 mcmd->fc_tm_rsp = FC_TM_FAILED; 762 break; 763 } 764 /* 765 * Queue the TM response to QLA2xxx LLD to build a 766 * CTIO response packet. 767 */ 768 qlt_xmit_tm_rsp(mcmd); 769 } 770 771 static void tcm_qla2xxx_aborted_task(struct se_cmd *se_cmd) 772 { 773 struct qla_tgt_cmd *cmd; 774 unsigned long flags; 775 776 if (se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) 777 return; 778 779 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd); 780 781 spin_lock_irqsave(&cmd->sess->sess_cmd_lock, flags); 782 list_del_init(&cmd->sess_cmd_list); 783 spin_unlock_irqrestore(&cmd->sess->sess_cmd_lock, flags); 784 785 qlt_abort_cmd(cmd); 786 } 787 788 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *, 789 struct tcm_qla2xxx_nacl *, struct fc_port *); 790 /* 791 * Expected to be called with struct qla_hw_data->tgt.sess_lock held 792 */ 793 static void tcm_qla2xxx_clear_nacl_from_fcport_map(struct fc_port *sess) 794 { 795 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl; 796 struct se_portal_group *se_tpg = se_nacl->se_tpg; 797 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn; 798 struct tcm_qla2xxx_lport *lport = container_of(se_wwn, 799 struct tcm_qla2xxx_lport, lport_wwn); 800 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl, 801 struct tcm_qla2xxx_nacl, se_node_acl); 802 void *node; 803 804 pr_debug("fc_rport domain: port_id 0x%06x\n", nacl->nport_id); 805 806 node = btree_remove32(&lport->lport_fcport_map, nacl->nport_id); 807 if (WARN_ON(node && (node != se_nacl))) { 808 /* 809 * The nacl no longer matches what we think it should be. 810 * Most likely a new dynamic acl has been added while 811 * someone dropped the hardware lock. It clearly is a 812 * bug elsewhere, but this bit can't make things worse. 813 */ 814 btree_insert32(&lport->lport_fcport_map, nacl->nport_id, 815 node, GFP_ATOMIC); 816 } 817 818 pr_debug("Removed from fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%06x\n", 819 se_nacl, nacl->nport_wwnn, nacl->nport_id); 820 /* 821 * Now clear the se_nacl and session pointers from our HW lport lookup 822 * table mapping for this initiator's fabric S_ID and LOOP_ID entries. 823 * 824 * This is done ahead of callbacks into tcm_qla2xxx_free_session() -> 825 * target_wait_for_sess_cmds() before the session waits for outstanding 826 * I/O to complete, to avoid a race between session shutdown execution 827 * and incoming ATIOs or TMRs picking up a stale se_node_act reference. 828 */ 829 tcm_qla2xxx_clear_sess_lookup(lport, nacl, sess); 830 } 831 832 static void tcm_qla2xxx_shutdown_sess(struct fc_port *sess) 833 { 834 target_stop_session(sess->se_sess); 835 } 836 837 static int tcm_qla2xxx_init_nodeacl(struct se_node_acl *se_nacl, 838 const char *name) 839 { 840 struct tcm_qla2xxx_nacl *nacl = 841 container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 842 u64 wwnn; 843 844 if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0) 845 return -EINVAL; 846 847 nacl->nport_wwnn = wwnn; 848 tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn); 849 850 return 0; 851 } 852 853 /* Start items for tcm_qla2xxx_tpg_attrib_cit */ 854 855 #define DEF_QLA_TPG_ATTRIB(name) \ 856 \ 857 static ssize_t tcm_qla2xxx_tpg_attrib_##name##_show( \ 858 struct config_item *item, char *page) \ 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 \ 864 return sprintf(page, "%d\n", tpg->tpg_attrib.name); \ 865 } \ 866 \ 867 static ssize_t tcm_qla2xxx_tpg_attrib_##name##_store( \ 868 struct config_item *item, const char *page, size_t count) \ 869 { \ 870 struct se_portal_group *se_tpg = attrib_to_tpg(item); \ 871 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \ 872 struct tcm_qla2xxx_tpg, se_tpg); \ 873 struct tcm_qla2xxx_tpg_attrib *a = &tpg->tpg_attrib; \ 874 unsigned long val; \ 875 int ret; \ 876 \ 877 ret = kstrtoul(page, 0, &val); \ 878 if (ret < 0) { \ 879 pr_err("kstrtoul() failed with" \ 880 " ret: %d\n", ret); \ 881 return -EINVAL; \ 882 } \ 883 \ 884 if ((val != 0) && (val != 1)) { \ 885 pr_err("Illegal boolean value %lu\n", val); \ 886 return -EINVAL; \ 887 } \ 888 \ 889 a->name = val; \ 890 \ 891 return count; \ 892 } \ 893 CONFIGFS_ATTR(tcm_qla2xxx_tpg_attrib_, name) 894 895 DEF_QLA_TPG_ATTRIB(generate_node_acls); 896 DEF_QLA_TPG_ATTRIB(cache_dynamic_acls); 897 DEF_QLA_TPG_ATTRIB(demo_mode_write_protect); 898 DEF_QLA_TPG_ATTRIB(prod_mode_write_protect); 899 DEF_QLA_TPG_ATTRIB(demo_mode_login_only); 900 #ifdef CONFIG_TCM_QLA2XXX_DEBUG 901 DEF_QLA_TPG_ATTRIB(jam_host); 902 #endif 903 904 static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = { 905 &tcm_qla2xxx_tpg_attrib_attr_generate_node_acls, 906 &tcm_qla2xxx_tpg_attrib_attr_cache_dynamic_acls, 907 &tcm_qla2xxx_tpg_attrib_attr_demo_mode_write_protect, 908 &tcm_qla2xxx_tpg_attrib_attr_prod_mode_write_protect, 909 &tcm_qla2xxx_tpg_attrib_attr_demo_mode_login_only, 910 #ifdef CONFIG_TCM_QLA2XXX_DEBUG 911 &tcm_qla2xxx_tpg_attrib_attr_jam_host, 912 #endif 913 NULL, 914 }; 915 916 /* End items for tcm_qla2xxx_tpg_attrib_cit */ 917 918 static int tcm_qla2xxx_enable_tpg(struct se_portal_group *se_tpg, 919 bool enable) 920 { 921 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn; 922 struct tcm_qla2xxx_lport *lport = container_of(se_wwn, 923 struct tcm_qla2xxx_lport, lport_wwn); 924 struct scsi_qla_host *vha = lport->qla_vha; 925 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 926 struct tcm_qla2xxx_tpg, se_tpg); 927 928 if (enable) { 929 if (atomic_read(&tpg->lport_tpg_enabled)) 930 return -EEXIST; 931 932 atomic_set(&tpg->lport_tpg_enabled, 1); 933 qlt_enable_vha(vha); 934 } else { 935 if (!atomic_read(&tpg->lport_tpg_enabled)) 936 return 0; 937 938 atomic_set(&tpg->lport_tpg_enabled, 0); 939 qlt_stop_phase1(vha->vha_tgt.qla_tgt); 940 qlt_stop_phase2(vha->vha_tgt.qla_tgt); 941 } 942 943 return 0; 944 } 945 946 static ssize_t tcm_qla2xxx_tpg_dynamic_sessions_show(struct config_item *item, 947 char *page) 948 { 949 return target_show_dynamic_sessions(to_tpg(item), page); 950 } 951 952 static ssize_t tcm_qla2xxx_tpg_fabric_prot_type_store(struct config_item *item, 953 const char *page, size_t count) 954 { 955 struct se_portal_group *se_tpg = to_tpg(item); 956 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 957 struct tcm_qla2xxx_tpg, se_tpg); 958 unsigned long val; 959 int ret = kstrtoul(page, 0, &val); 960 961 if (ret) { 962 pr_err("kstrtoul() returned %d for fabric_prot_type\n", ret); 963 return ret; 964 } 965 if (val != 0 && val != 1 && val != 3) { 966 pr_err("Invalid qla2xxx fabric_prot_type: %lu\n", val); 967 return -EINVAL; 968 } 969 tpg->tpg_attrib.fabric_prot_type = val; 970 971 return count; 972 } 973 974 static ssize_t tcm_qla2xxx_tpg_fabric_prot_type_show(struct config_item *item, 975 char *page) 976 { 977 struct se_portal_group *se_tpg = to_tpg(item); 978 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 979 struct tcm_qla2xxx_tpg, se_tpg); 980 981 return sprintf(page, "%d\n", tpg->tpg_attrib.fabric_prot_type); 982 } 983 984 CONFIGFS_ATTR_RO(tcm_qla2xxx_tpg_, dynamic_sessions); 985 CONFIGFS_ATTR(tcm_qla2xxx_tpg_, fabric_prot_type); 986 987 static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = { 988 &tcm_qla2xxx_tpg_attr_dynamic_sessions, 989 &tcm_qla2xxx_tpg_attr_fabric_prot_type, 990 NULL, 991 }; 992 993 static struct se_portal_group *tcm_qla2xxx_make_tpg(struct se_wwn *wwn, 994 const char *name) 995 { 996 struct tcm_qla2xxx_lport *lport = container_of(wwn, 997 struct tcm_qla2xxx_lport, lport_wwn); 998 struct tcm_qla2xxx_tpg *tpg; 999 unsigned long tpgt; 1000 int ret; 1001 1002 if (strstr(name, "tpgt_") != name) 1003 return ERR_PTR(-EINVAL); 1004 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX) 1005 return ERR_PTR(-EINVAL); 1006 1007 if ((tpgt != 1)) { 1008 pr_err("In non NPIV mode, a single TPG=1 is used for HW port mappings\n"); 1009 return ERR_PTR(-ENOSYS); 1010 } 1011 1012 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL); 1013 if (!tpg) { 1014 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n"); 1015 return ERR_PTR(-ENOMEM); 1016 } 1017 tpg->lport = lport; 1018 tpg->lport_tpgt = tpgt; 1019 /* 1020 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic 1021 * NodeACLs 1022 */ 1023 tpg->tpg_attrib.generate_node_acls = 1; 1024 tpg->tpg_attrib.demo_mode_write_protect = 1; 1025 tpg->tpg_attrib.cache_dynamic_acls = 1; 1026 tpg->tpg_attrib.demo_mode_login_only = 1; 1027 tpg->tpg_attrib.jam_host = 0; 1028 1029 ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP); 1030 if (ret < 0) { 1031 kfree(tpg); 1032 return NULL; 1033 } 1034 1035 lport->tpg_1 = tpg; 1036 1037 return &tpg->se_tpg; 1038 } 1039 1040 static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg) 1041 { 1042 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1043 struct tcm_qla2xxx_tpg, se_tpg); 1044 struct tcm_qla2xxx_lport *lport = tpg->lport; 1045 struct scsi_qla_host *vha = lport->qla_vha; 1046 /* 1047 * Call into qla2x_target.c LLD logic to shutdown the active 1048 * FC Nexuses and disable target mode operation for this qla_hw_data 1049 */ 1050 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stop) 1051 qlt_stop_phase1(vha->vha_tgt.qla_tgt); 1052 1053 core_tpg_deregister(se_tpg); 1054 /* 1055 * Clear local TPG=1 pointer for non NPIV mode. 1056 */ 1057 lport->tpg_1 = NULL; 1058 kfree(tpg); 1059 } 1060 1061 static int tcm_qla2xxx_npiv_enable_tpg(struct se_portal_group *se_tpg, 1062 bool enable) 1063 { 1064 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn; 1065 struct tcm_qla2xxx_lport *lport = container_of(se_wwn, 1066 struct tcm_qla2xxx_lport, lport_wwn); 1067 struct scsi_qla_host *vha = lport->qla_vha; 1068 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1069 struct tcm_qla2xxx_tpg, se_tpg); 1070 1071 if (enable) { 1072 if (atomic_read(&tpg->lport_tpg_enabled)) 1073 return -EEXIST; 1074 1075 atomic_set(&tpg->lport_tpg_enabled, 1); 1076 qlt_enable_vha(vha); 1077 } else { 1078 if (!atomic_read(&tpg->lport_tpg_enabled)) 1079 return 0; 1080 1081 atomic_set(&tpg->lport_tpg_enabled, 0); 1082 qlt_stop_phase1(vha->vha_tgt.qla_tgt); 1083 qlt_stop_phase2(vha->vha_tgt.qla_tgt); 1084 } 1085 1086 return 0; 1087 } 1088 1089 static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg(struct se_wwn *wwn, 1090 const char *name) 1091 { 1092 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1093 struct tcm_qla2xxx_lport, lport_wwn); 1094 struct tcm_qla2xxx_tpg *tpg; 1095 unsigned long tpgt; 1096 int ret; 1097 1098 if (strstr(name, "tpgt_") != name) 1099 return ERR_PTR(-EINVAL); 1100 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX) 1101 return ERR_PTR(-EINVAL); 1102 1103 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL); 1104 if (!tpg) { 1105 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n"); 1106 return ERR_PTR(-ENOMEM); 1107 } 1108 tpg->lport = lport; 1109 tpg->lport_tpgt = tpgt; 1110 1111 /* 1112 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic 1113 * NodeACLs 1114 */ 1115 tpg->tpg_attrib.generate_node_acls = 1; 1116 tpg->tpg_attrib.demo_mode_write_protect = 1; 1117 tpg->tpg_attrib.cache_dynamic_acls = 1; 1118 tpg->tpg_attrib.demo_mode_login_only = 1; 1119 1120 ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP); 1121 if (ret < 0) { 1122 kfree(tpg); 1123 return NULL; 1124 } 1125 lport->tpg_1 = tpg; 1126 return &tpg->se_tpg; 1127 } 1128 1129 /* 1130 * Expected to be called with struct qla_hw_data->tgt.sess_lock held 1131 */ 1132 static struct fc_port *tcm_qla2xxx_find_sess_by_s_id(scsi_qla_host_t *vha, 1133 const be_id_t s_id) 1134 { 1135 struct tcm_qla2xxx_lport *lport; 1136 struct se_node_acl *se_nacl; 1137 struct tcm_qla2xxx_nacl *nacl; 1138 u32 key; 1139 1140 lport = vha->vha_tgt.target_lport_ptr; 1141 if (!lport) { 1142 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1143 dump_stack(); 1144 return NULL; 1145 } 1146 1147 key = sid_to_key(s_id); 1148 pr_debug("find_sess_by_s_id: 0x%06x\n", key); 1149 1150 se_nacl = btree_lookup32(&lport->lport_fcport_map, key); 1151 if (!se_nacl) { 1152 pr_debug("Unable to locate s_id: 0x%06x\n", key); 1153 return NULL; 1154 } 1155 pr_debug("find_sess_by_s_id: located se_nacl: %p, initiatorname: %s\n", 1156 se_nacl, se_nacl->initiatorname); 1157 1158 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1159 if (!nacl->fc_port) { 1160 pr_err("Unable to locate struct fc_port\n"); 1161 return NULL; 1162 } 1163 1164 return nacl->fc_port; 1165 } 1166 1167 /* 1168 * Expected to be called with struct qla_hw_data->tgt.sess_lock held 1169 */ 1170 static void tcm_qla2xxx_set_sess_by_s_id( 1171 struct tcm_qla2xxx_lport *lport, 1172 struct se_node_acl *new_se_nacl, 1173 struct tcm_qla2xxx_nacl *nacl, 1174 struct se_session *se_sess, 1175 struct fc_port *fc_port, 1176 be_id_t s_id) 1177 { 1178 u32 key; 1179 void *slot; 1180 int rc; 1181 1182 key = sid_to_key(s_id); 1183 pr_debug("set_sess_by_s_id: %06x\n", key); 1184 1185 slot = btree_lookup32(&lport->lport_fcport_map, key); 1186 if (!slot) { 1187 if (new_se_nacl) { 1188 pr_debug("Setting up new fc_port entry to new_se_nacl\n"); 1189 nacl->nport_id = key; 1190 rc = btree_insert32(&lport->lport_fcport_map, key, 1191 new_se_nacl, GFP_ATOMIC); 1192 if (rc) 1193 printk(KERN_ERR "Unable to insert s_id into fcport_map: %06x\n", 1194 (int)key); 1195 } else { 1196 pr_debug("Wiping nonexisting fc_port entry\n"); 1197 } 1198 1199 fc_port->se_sess = se_sess; 1200 nacl->fc_port = fc_port; 1201 return; 1202 } 1203 1204 if (nacl->fc_port) { 1205 if (new_se_nacl == NULL) { 1206 pr_debug("Clearing existing nacl->fc_port and fc_port entry\n"); 1207 btree_remove32(&lport->lport_fcport_map, key); 1208 nacl->fc_port = NULL; 1209 return; 1210 } 1211 pr_debug("Replacing existing nacl->fc_port and fc_port entry\n"); 1212 btree_update32(&lport->lport_fcport_map, key, new_se_nacl); 1213 fc_port->se_sess = se_sess; 1214 nacl->fc_port = fc_port; 1215 return; 1216 } 1217 1218 if (new_se_nacl == NULL) { 1219 pr_debug("Clearing existing fc_port entry\n"); 1220 btree_remove32(&lport->lport_fcport_map, key); 1221 return; 1222 } 1223 1224 pr_debug("Replacing existing fc_port entry w/o active nacl->fc_port\n"); 1225 btree_update32(&lport->lport_fcport_map, key, new_se_nacl); 1226 fc_port->se_sess = se_sess; 1227 nacl->fc_port = fc_port; 1228 1229 pr_debug("Setup nacl->fc_port %p by s_id for se_nacl: %p, initiatorname: %s\n", 1230 nacl->fc_port, new_se_nacl, new_se_nacl->initiatorname); 1231 } 1232 1233 /* 1234 * Expected to be called with struct qla_hw_data->tgt.sess_lock held 1235 */ 1236 static struct fc_port *tcm_qla2xxx_find_sess_by_loop_id( 1237 scsi_qla_host_t *vha, 1238 const uint16_t loop_id) 1239 { 1240 struct tcm_qla2xxx_lport *lport; 1241 struct se_node_acl *se_nacl; 1242 struct tcm_qla2xxx_nacl *nacl; 1243 struct tcm_qla2xxx_fc_loopid *fc_loopid; 1244 1245 lport = vha->vha_tgt.target_lport_ptr; 1246 if (!lport) { 1247 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1248 dump_stack(); 1249 return NULL; 1250 } 1251 1252 pr_debug("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id); 1253 1254 fc_loopid = lport->lport_loopid_map + loop_id; 1255 se_nacl = fc_loopid->se_nacl; 1256 if (!se_nacl) { 1257 pr_debug("Unable to locate se_nacl by loop_id: 0x%04x\n", 1258 loop_id); 1259 return NULL; 1260 } 1261 1262 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1263 1264 if (!nacl->fc_port) { 1265 pr_err("Unable to locate struct fc_port\n"); 1266 return NULL; 1267 } 1268 1269 return nacl->fc_port; 1270 } 1271 1272 /* 1273 * Expected to be called with struct qla_hw_data->tgt.sess_lock held 1274 */ 1275 static void tcm_qla2xxx_set_sess_by_loop_id( 1276 struct tcm_qla2xxx_lport *lport, 1277 struct se_node_acl *new_se_nacl, 1278 struct tcm_qla2xxx_nacl *nacl, 1279 struct se_session *se_sess, 1280 struct fc_port *fc_port, 1281 uint16_t loop_id) 1282 { 1283 struct se_node_acl *saved_nacl; 1284 struct tcm_qla2xxx_fc_loopid *fc_loopid; 1285 1286 pr_debug("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id); 1287 1288 fc_loopid = &((struct tcm_qla2xxx_fc_loopid *) 1289 lport->lport_loopid_map)[loop_id]; 1290 1291 saved_nacl = fc_loopid->se_nacl; 1292 if (!saved_nacl) { 1293 pr_debug("Setting up new fc_loopid->se_nacl to new_se_nacl\n"); 1294 fc_loopid->se_nacl = new_se_nacl; 1295 if (fc_port->se_sess != se_sess) 1296 fc_port->se_sess = se_sess; 1297 if (nacl->fc_port != fc_port) 1298 nacl->fc_port = fc_port; 1299 return; 1300 } 1301 1302 if (nacl->fc_port) { 1303 if (new_se_nacl == NULL) { 1304 pr_debug("Clearing nacl->fc_port and fc_loopid->se_nacl\n"); 1305 fc_loopid->se_nacl = NULL; 1306 nacl->fc_port = NULL; 1307 return; 1308 } 1309 1310 pr_debug("Replacing existing nacl->fc_port and fc_loopid->se_nacl\n"); 1311 fc_loopid->se_nacl = new_se_nacl; 1312 if (fc_port->se_sess != se_sess) 1313 fc_port->se_sess = se_sess; 1314 if (nacl->fc_port != fc_port) 1315 nacl->fc_port = fc_port; 1316 return; 1317 } 1318 1319 if (new_se_nacl == NULL) { 1320 pr_debug("Clearing fc_loopid->se_nacl\n"); 1321 fc_loopid->se_nacl = NULL; 1322 return; 1323 } 1324 1325 pr_debug("Replacing existing fc_loopid->se_nacl w/o active nacl->fc_port\n"); 1326 fc_loopid->se_nacl = new_se_nacl; 1327 if (fc_port->se_sess != se_sess) 1328 fc_port->se_sess = se_sess; 1329 if (nacl->fc_port != fc_port) 1330 nacl->fc_port = fc_port; 1331 1332 pr_debug("Setup nacl->fc_port %p by loop_id for se_nacl: %p, initiatorname: %s\n", 1333 nacl->fc_port, new_se_nacl, new_se_nacl->initiatorname); 1334 } 1335 1336 /* 1337 * Should always be called with qla_hw_data->tgt.sess_lock held. 1338 */ 1339 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *lport, 1340 struct tcm_qla2xxx_nacl *nacl, struct fc_port *sess) 1341 { 1342 struct se_session *se_sess = sess->se_sess; 1343 1344 tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess, 1345 sess, port_id_to_be_id(sess->d_id)); 1346 tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess, 1347 sess, sess->loop_id); 1348 } 1349 1350 static void tcm_qla2xxx_free_session(struct fc_port *sess) 1351 { 1352 struct qla_tgt *tgt = sess->tgt; 1353 struct qla_hw_data *ha = tgt->ha; 1354 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev); 1355 struct se_session *se_sess; 1356 struct tcm_qla2xxx_lport *lport; 1357 1358 se_sess = sess->se_sess; 1359 if (!se_sess) { 1360 pr_err("struct fc_port->se_sess is NULL\n"); 1361 dump_stack(); 1362 return; 1363 } 1364 1365 lport = vha->vha_tgt.target_lport_ptr; 1366 if (!lport) { 1367 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1368 dump_stack(); 1369 return; 1370 } 1371 target_wait_for_sess_cmds(se_sess); 1372 1373 target_remove_session(se_sess); 1374 } 1375 1376 static int tcm_qla2xxx_session_cb(struct se_portal_group *se_tpg, 1377 struct se_session *se_sess, void *p) 1378 { 1379 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1380 struct tcm_qla2xxx_tpg, se_tpg); 1381 struct tcm_qla2xxx_lport *lport = tpg->lport; 1382 struct qla_hw_data *ha = lport->qla_vha->hw; 1383 struct se_node_acl *se_nacl = se_sess->se_node_acl; 1384 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl, 1385 struct tcm_qla2xxx_nacl, se_node_acl); 1386 struct fc_port *qlat_sess = p; 1387 uint16_t loop_id = qlat_sess->loop_id; 1388 unsigned long flags; 1389 1390 /* 1391 * And now setup se_nacl and session pointers into HW lport internal 1392 * mappings for fabric S_ID and LOOP_ID. 1393 */ 1394 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1395 tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl, se_sess, qlat_sess, 1396 port_id_to_be_id(qlat_sess->d_id)); 1397 tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl, 1398 se_sess, qlat_sess, loop_id); 1399 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1400 1401 return 0; 1402 } 1403 1404 /* 1405 * Called via qlt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl() 1406 * to locate struct se_node_acl 1407 */ 1408 static int tcm_qla2xxx_check_initiator_node_acl( 1409 scsi_qla_host_t *vha, 1410 unsigned char *fc_wwpn, 1411 struct fc_port *qlat_sess) 1412 { 1413 struct qla_hw_data *ha = vha->hw; 1414 struct tcm_qla2xxx_lport *lport; 1415 struct tcm_qla2xxx_tpg *tpg; 1416 struct se_session *se_sess; 1417 unsigned char port_name[36]; 1418 int num_tags = (ha->cur_fw_xcb_count) ? ha->cur_fw_xcb_count : 1419 TCM_QLA2XXX_DEFAULT_TAGS; 1420 1421 lport = vha->vha_tgt.target_lport_ptr; 1422 if (!lport) { 1423 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1424 dump_stack(); 1425 return -EINVAL; 1426 } 1427 /* 1428 * Locate the TPG=1 reference.. 1429 */ 1430 tpg = lport->tpg_1; 1431 if (!tpg) { 1432 pr_err("Unable to locate struct tcm_qla2xxx_lport->tpg_1\n"); 1433 return -EINVAL; 1434 } 1435 /* 1436 * Format the FCP Initiator port_name into colon seperated values to 1437 * match the format by tcm_qla2xxx explict ConfigFS NodeACLs. 1438 */ 1439 memset(&port_name, 0, 36); 1440 snprintf(port_name, sizeof(port_name), "%8phC", fc_wwpn); 1441 /* 1442 * Locate our struct se_node_acl either from an explict NodeACL created 1443 * via ConfigFS, or via running in TPG demo mode. 1444 */ 1445 se_sess = target_setup_session(&tpg->se_tpg, num_tags, 1446 sizeof(struct qla_tgt_cmd), 1447 TARGET_PROT_ALL, port_name, 1448 qlat_sess, tcm_qla2xxx_session_cb); 1449 if (IS_ERR(se_sess)) 1450 return PTR_ERR(se_sess); 1451 1452 return 0; 1453 } 1454 1455 static void tcm_qla2xxx_update_sess(struct fc_port *sess, port_id_t s_id, 1456 uint16_t loop_id, bool conf_compl_supported) 1457 { 1458 struct qla_tgt *tgt = sess->tgt; 1459 struct qla_hw_data *ha = tgt->ha; 1460 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev); 1461 struct tcm_qla2xxx_lport *lport = vha->vha_tgt.target_lport_ptr; 1462 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl; 1463 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl, 1464 struct tcm_qla2xxx_nacl, se_node_acl); 1465 u32 key; 1466 1467 1468 if (sess->loop_id != loop_id || sess->d_id.b24 != s_id.b24) 1469 pr_info("Updating session %p from port %8phC loop_id %d -> %d s_id %x:%x:%x -> %x:%x:%x\n", 1470 sess, sess->port_name, 1471 sess->loop_id, loop_id, sess->d_id.b.domain, 1472 sess->d_id.b.area, sess->d_id.b.al_pa, s_id.b.domain, 1473 s_id.b.area, s_id.b.al_pa); 1474 1475 if (sess->loop_id != loop_id) { 1476 /* 1477 * Because we can shuffle loop IDs around and we 1478 * update different sessions non-atomically, we might 1479 * have overwritten this session's old loop ID 1480 * already, and we might end up overwriting some other 1481 * session that will be updated later. So we have to 1482 * be extra careful and we can't warn about those things... 1483 */ 1484 if (lport->lport_loopid_map[sess->loop_id].se_nacl == se_nacl) 1485 lport->lport_loopid_map[sess->loop_id].se_nacl = NULL; 1486 1487 lport->lport_loopid_map[loop_id].se_nacl = se_nacl; 1488 1489 sess->loop_id = loop_id; 1490 } 1491 1492 if (sess->d_id.b24 != s_id.b24) { 1493 key = (((u32) sess->d_id.b.domain << 16) | 1494 ((u32) sess->d_id.b.area << 8) | 1495 ((u32) sess->d_id.b.al_pa)); 1496 1497 if (btree_lookup32(&lport->lport_fcport_map, key)) 1498 WARN(btree_remove32(&lport->lport_fcport_map, key) != 1499 se_nacl, "Found wrong se_nacl when updating s_id %x:%x:%x\n", 1500 sess->d_id.b.domain, sess->d_id.b.area, 1501 sess->d_id.b.al_pa); 1502 else 1503 WARN(1, "No lport_fcport_map entry for s_id %x:%x:%x\n", 1504 sess->d_id.b.domain, sess->d_id.b.area, 1505 sess->d_id.b.al_pa); 1506 1507 key = (((u32) s_id.b.domain << 16) | 1508 ((u32) s_id.b.area << 8) | 1509 ((u32) s_id.b.al_pa)); 1510 1511 if (btree_lookup32(&lport->lport_fcport_map, key)) { 1512 WARN(1, "Already have lport_fcport_map entry for s_id %x:%x:%x\n", 1513 s_id.b.domain, s_id.b.area, s_id.b.al_pa); 1514 btree_update32(&lport->lport_fcport_map, key, se_nacl); 1515 } else { 1516 btree_insert32(&lport->lport_fcport_map, key, se_nacl, 1517 GFP_ATOMIC); 1518 } 1519 1520 sess->d_id = s_id; 1521 nacl->nport_id = key; 1522 } 1523 1524 sess->conf_compl_supported = conf_compl_supported; 1525 1526 } 1527 1528 /* 1529 * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path. 1530 */ 1531 static const struct qla_tgt_func_tmpl tcm_qla2xxx_template = { 1532 .find_cmd_by_tag = tcm_qla2xxx_find_cmd_by_tag, 1533 .handle_cmd = tcm_qla2xxx_handle_cmd, 1534 .handle_data = tcm_qla2xxx_handle_data, 1535 .handle_tmr = tcm_qla2xxx_handle_tmr, 1536 .get_cmd = tcm_qla2xxx_get_cmd, 1537 .rel_cmd = tcm_qla2xxx_rel_cmd, 1538 .free_cmd = tcm_qla2xxx_free_cmd, 1539 .free_mcmd = tcm_qla2xxx_free_mcmd, 1540 .free_session = tcm_qla2xxx_free_session, 1541 .update_sess = tcm_qla2xxx_update_sess, 1542 .check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl, 1543 .find_sess_by_s_id = tcm_qla2xxx_find_sess_by_s_id, 1544 .find_sess_by_loop_id = tcm_qla2xxx_find_sess_by_loop_id, 1545 .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map, 1546 .put_sess = tcm_qla2xxx_put_sess, 1547 .shutdown_sess = tcm_qla2xxx_shutdown_sess, 1548 .get_dif_tags = tcm_qla2xxx_dif_tags, 1549 .chk_dif_tags = tcm_qla2xxx_chk_dif_tags, 1550 }; 1551 1552 static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport) 1553 { 1554 int rc; 1555 size_t map_sz; 1556 1557 rc = btree_init32(&lport->lport_fcport_map); 1558 if (rc) { 1559 pr_err("Unable to initialize lport->lport_fcport_map btree\n"); 1560 return rc; 1561 } 1562 1563 map_sz = array_size(65536, sizeof(struct tcm_qla2xxx_fc_loopid)); 1564 1565 lport->lport_loopid_map = vzalloc(map_sz); 1566 if (!lport->lport_loopid_map) { 1567 pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n", map_sz); 1568 btree_destroy32(&lport->lport_fcport_map); 1569 return -ENOMEM; 1570 } 1571 pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n", map_sz); 1572 return 0; 1573 } 1574 1575 static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha, 1576 void *target_lport_ptr, 1577 u64 npiv_wwpn, u64 npiv_wwnn) 1578 { 1579 struct qla_hw_data *ha = vha->hw; 1580 struct tcm_qla2xxx_lport *lport = 1581 (struct tcm_qla2xxx_lport *)target_lport_ptr; 1582 /* 1583 * Setup tgt_ops, local pointer to vha and target_lport_ptr 1584 */ 1585 ha->tgt.tgt_ops = &tcm_qla2xxx_template; 1586 vha->vha_tgt.target_lport_ptr = target_lport_ptr; 1587 lport->qla_vha = vha; 1588 1589 return 0; 1590 } 1591 1592 static struct se_wwn *tcm_qla2xxx_make_lport( 1593 struct target_fabric_configfs *tf, 1594 struct config_group *group, 1595 const char *name) 1596 { 1597 struct tcm_qla2xxx_lport *lport; 1598 u64 wwpn; 1599 int ret = -ENODEV; 1600 1601 if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0) 1602 return ERR_PTR(-EINVAL); 1603 1604 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL); 1605 if (!lport) { 1606 pr_err("Unable to allocate struct tcm_qla2xxx_lport\n"); 1607 return ERR_PTR(-ENOMEM); 1608 } 1609 lport->lport_wwpn = wwpn; 1610 tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN, 1611 wwpn); 1612 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) wwpn); 1613 1614 ret = tcm_qla2xxx_init_lport(lport); 1615 if (ret != 0) 1616 goto out; 1617 1618 ret = qlt_lport_register(lport, wwpn, 0, 0, 1619 tcm_qla2xxx_lport_register_cb); 1620 if (ret != 0) 1621 goto out_lport; 1622 1623 return &lport->lport_wwn; 1624 out_lport: 1625 vfree(lport->lport_loopid_map); 1626 btree_destroy32(&lport->lport_fcport_map); 1627 out: 1628 kfree(lport); 1629 return ERR_PTR(ret); 1630 } 1631 1632 static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn) 1633 { 1634 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1635 struct tcm_qla2xxx_lport, lport_wwn); 1636 struct scsi_qla_host *vha = lport->qla_vha; 1637 struct se_node_acl *node; 1638 u32 key = 0; 1639 1640 /* 1641 * Call into qla2x_target.c LLD logic to complete the 1642 * shutdown of struct qla_tgt after the call to 1643 * qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above.. 1644 */ 1645 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stopped) 1646 qlt_stop_phase2(vha->vha_tgt.qla_tgt); 1647 1648 qlt_lport_deregister(vha); 1649 1650 vfree(lport->lport_loopid_map); 1651 btree_for_each_safe32(&lport->lport_fcport_map, key, node) 1652 btree_remove32(&lport->lport_fcport_map, key); 1653 btree_destroy32(&lport->lport_fcport_map); 1654 kfree(lport); 1655 } 1656 1657 static int tcm_qla2xxx_lport_register_npiv_cb(struct scsi_qla_host *base_vha, 1658 void *target_lport_ptr, 1659 u64 npiv_wwpn, u64 npiv_wwnn) 1660 { 1661 struct fc_vport *vport; 1662 struct Scsi_Host *sh = base_vha->host; 1663 struct scsi_qla_host *npiv_vha; 1664 struct tcm_qla2xxx_lport *lport = 1665 (struct tcm_qla2xxx_lport *)target_lport_ptr; 1666 struct tcm_qla2xxx_lport *base_lport = 1667 (struct tcm_qla2xxx_lport *)base_vha->vha_tgt.target_lport_ptr; 1668 struct fc_vport_identifiers vport_id; 1669 1670 if (qla_ini_mode_enabled(base_vha)) { 1671 pr_err("qla2xxx base_vha not enabled for target mode\n"); 1672 return -EPERM; 1673 } 1674 1675 if (!base_lport || !base_lport->tpg_1 || 1676 !atomic_read(&base_lport->tpg_1->lport_tpg_enabled)) { 1677 pr_err("qla2xxx base_lport or tpg_1 not available\n"); 1678 return -EPERM; 1679 } 1680 1681 memset(&vport_id, 0, sizeof(vport_id)); 1682 vport_id.port_name = npiv_wwpn; 1683 vport_id.node_name = npiv_wwnn; 1684 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR; 1685 vport_id.vport_type = FC_PORTTYPE_NPIV; 1686 vport_id.disable = false; 1687 1688 vport = fc_vport_create(sh, 0, &vport_id); 1689 if (!vport) { 1690 pr_err("fc_vport_create failed for qla2xxx_npiv\n"); 1691 return -ENODEV; 1692 } 1693 /* 1694 * Setup local pointer to NPIV vhba + target_lport_ptr 1695 */ 1696 npiv_vha = (struct scsi_qla_host *)vport->dd_data; 1697 npiv_vha->vha_tgt.target_lport_ptr = target_lport_ptr; 1698 lport->qla_vha = npiv_vha; 1699 scsi_host_get(npiv_vha->host); 1700 return 0; 1701 } 1702 1703 1704 static struct se_wwn *tcm_qla2xxx_npiv_make_lport( 1705 struct target_fabric_configfs *tf, 1706 struct config_group *group, 1707 const char *name) 1708 { 1709 struct tcm_qla2xxx_lport *lport; 1710 u64 phys_wwpn, npiv_wwpn, npiv_wwnn; 1711 char *p, tmp[128]; 1712 int ret; 1713 1714 snprintf(tmp, 128, "%s", name); 1715 1716 p = strchr(tmp, '@'); 1717 if (!p) { 1718 pr_err("Unable to locate NPIV '@' separator\n"); 1719 return ERR_PTR(-EINVAL); 1720 } 1721 *p++ = '\0'; 1722 1723 if (tcm_qla2xxx_parse_wwn(tmp, &phys_wwpn, 1) < 0) 1724 return ERR_PTR(-EINVAL); 1725 1726 if (tcm_qla2xxx_npiv_parse_wwn(p, strlen(p)+1, 1727 &npiv_wwpn, &npiv_wwnn) < 0) 1728 return ERR_PTR(-EINVAL); 1729 1730 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL); 1731 if (!lport) { 1732 pr_err("Unable to allocate struct tcm_qla2xxx_lport for NPIV\n"); 1733 return ERR_PTR(-ENOMEM); 1734 } 1735 lport->lport_npiv_wwpn = npiv_wwpn; 1736 lport->lport_npiv_wwnn = npiv_wwnn; 1737 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) npiv_wwpn); 1738 1739 ret = tcm_qla2xxx_init_lport(lport); 1740 if (ret != 0) 1741 goto out; 1742 1743 ret = qlt_lport_register(lport, phys_wwpn, npiv_wwpn, npiv_wwnn, 1744 tcm_qla2xxx_lport_register_npiv_cb); 1745 if (ret != 0) 1746 goto out_lport; 1747 1748 return &lport->lport_wwn; 1749 out_lport: 1750 vfree(lport->lport_loopid_map); 1751 btree_destroy32(&lport->lport_fcport_map); 1752 out: 1753 kfree(lport); 1754 return ERR_PTR(ret); 1755 } 1756 1757 static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn) 1758 { 1759 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1760 struct tcm_qla2xxx_lport, lport_wwn); 1761 struct scsi_qla_host *npiv_vha = lport->qla_vha; 1762 struct qla_hw_data *ha = npiv_vha->hw; 1763 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 1764 1765 scsi_host_put(npiv_vha->host); 1766 /* 1767 * Notify libfc that we want to release the vha->fc_vport 1768 */ 1769 fc_vport_terminate(npiv_vha->fc_vport); 1770 scsi_host_put(base_vha->host); 1771 kfree(lport); 1772 } 1773 1774 1775 static ssize_t tcm_qla2xxx_wwn_version_show(struct config_item *item, 1776 char *page) 1777 { 1778 return sprintf(page, 1779 "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s on %s\n", 1780 QLA2XXX_VERSION, utsname()->sysname, 1781 utsname()->machine, utsname()->release); 1782 } 1783 1784 CONFIGFS_ATTR_RO(tcm_qla2xxx_wwn_, version); 1785 1786 static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = { 1787 &tcm_qla2xxx_wwn_attr_version, 1788 NULL, 1789 }; 1790 1791 static const struct target_core_fabric_ops tcm_qla2xxx_ops = { 1792 .module = THIS_MODULE, 1793 .fabric_name = "qla2xxx", 1794 .node_acl_size = sizeof(struct tcm_qla2xxx_nacl), 1795 /* 1796 * XXX: Limit assumes single page per scatter-gather-list entry. 1797 * Current maximum is ~4.9 MB per se_cmd->t_data_sg with PAGE_SIZE=4096 1798 */ 1799 .max_data_sg_nents = 1200, 1800 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn, 1801 .tpg_get_tag = tcm_qla2xxx_get_tag, 1802 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode, 1803 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache, 1804 .tpg_check_demo_mode_write_protect = 1805 tcm_qla2xxx_check_demo_write_protect, 1806 .tpg_check_prod_mode_write_protect = 1807 tcm_qla2xxx_check_prod_write_protect, 1808 .tpg_check_prot_fabric_only = tcm_qla2xxx_check_prot_fabric_only, 1809 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only, 1810 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index, 1811 .check_stop_free = tcm_qla2xxx_check_stop_free, 1812 .release_cmd = tcm_qla2xxx_release_cmd, 1813 .close_session = tcm_qla2xxx_close_session, 1814 .sess_get_index = tcm_qla2xxx_sess_get_index, 1815 .sess_get_initiator_sid = NULL, 1816 .write_pending = tcm_qla2xxx_write_pending, 1817 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs, 1818 .get_cmd_state = tcm_qla2xxx_get_cmd_state, 1819 .queue_data_in = tcm_qla2xxx_queue_data_in, 1820 .queue_status = tcm_qla2xxx_queue_status, 1821 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp, 1822 .aborted_task = tcm_qla2xxx_aborted_task, 1823 /* 1824 * Setup function pointers for generic logic in 1825 * target_core_fabric_configfs.c 1826 */ 1827 .fabric_make_wwn = tcm_qla2xxx_make_lport, 1828 .fabric_drop_wwn = tcm_qla2xxx_drop_lport, 1829 .fabric_make_tpg = tcm_qla2xxx_make_tpg, 1830 .fabric_enable_tpg = tcm_qla2xxx_enable_tpg, 1831 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg, 1832 .fabric_init_nodeacl = tcm_qla2xxx_init_nodeacl, 1833 1834 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs, 1835 .tfc_tpg_base_attrs = tcm_qla2xxx_tpg_attrs, 1836 .tfc_tpg_attrib_attrs = tcm_qla2xxx_tpg_attrib_attrs, 1837 }; 1838 1839 static const struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = { 1840 .module = THIS_MODULE, 1841 .fabric_name = "qla2xxx_npiv", 1842 .node_acl_size = sizeof(struct tcm_qla2xxx_nacl), 1843 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn, 1844 .tpg_get_tag = tcm_qla2xxx_get_tag, 1845 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode, 1846 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache, 1847 .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_demo_mode, 1848 .tpg_check_prod_mode_write_protect = 1849 tcm_qla2xxx_check_prod_write_protect, 1850 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only, 1851 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index, 1852 .check_stop_free = tcm_qla2xxx_check_stop_free, 1853 .release_cmd = tcm_qla2xxx_release_cmd, 1854 .close_session = tcm_qla2xxx_close_session, 1855 .sess_get_index = tcm_qla2xxx_sess_get_index, 1856 .sess_get_initiator_sid = NULL, 1857 .write_pending = tcm_qla2xxx_write_pending, 1858 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs, 1859 .get_cmd_state = tcm_qla2xxx_get_cmd_state, 1860 .queue_data_in = tcm_qla2xxx_queue_data_in, 1861 .queue_status = tcm_qla2xxx_queue_status, 1862 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp, 1863 .aborted_task = tcm_qla2xxx_aborted_task, 1864 /* 1865 * Setup function pointers for generic logic in 1866 * target_core_fabric_configfs.c 1867 */ 1868 .fabric_make_wwn = tcm_qla2xxx_npiv_make_lport, 1869 .fabric_drop_wwn = tcm_qla2xxx_npiv_drop_lport, 1870 .fabric_make_tpg = tcm_qla2xxx_npiv_make_tpg, 1871 .fabric_enable_tpg = tcm_qla2xxx_npiv_enable_tpg, 1872 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg, 1873 .fabric_init_nodeacl = tcm_qla2xxx_init_nodeacl, 1874 1875 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs, 1876 }; 1877 1878 static int tcm_qla2xxx_register_configfs(void) 1879 { 1880 int ret; 1881 1882 pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on %s\n", 1883 QLA2XXX_VERSION, utsname()->sysname, 1884 utsname()->machine, utsname()->release); 1885 1886 ret = target_register_template(&tcm_qla2xxx_ops); 1887 if (ret) 1888 return ret; 1889 1890 ret = target_register_template(&tcm_qla2xxx_npiv_ops); 1891 if (ret) 1892 goto out_fabric; 1893 1894 tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free", 1895 WQ_MEM_RECLAIM, 0); 1896 if (!tcm_qla2xxx_free_wq) { 1897 ret = -ENOMEM; 1898 goto out_fabric_npiv; 1899 } 1900 1901 return 0; 1902 1903 out_fabric_npiv: 1904 target_unregister_template(&tcm_qla2xxx_npiv_ops); 1905 out_fabric: 1906 target_unregister_template(&tcm_qla2xxx_ops); 1907 return ret; 1908 } 1909 1910 static void tcm_qla2xxx_deregister_configfs(void) 1911 { 1912 destroy_workqueue(tcm_qla2xxx_free_wq); 1913 1914 target_unregister_template(&tcm_qla2xxx_ops); 1915 target_unregister_template(&tcm_qla2xxx_npiv_ops); 1916 } 1917 1918 static int __init tcm_qla2xxx_init(void) 1919 { 1920 int ret; 1921 1922 BUILD_BUG_ON(sizeof(struct abts_recv_from_24xx) != 64); 1923 BUILD_BUG_ON(sizeof(struct abts_resp_from_24xx_fw) != 64); 1924 BUILD_BUG_ON(sizeof(struct atio7_fcp_cmnd) != 32); 1925 BUILD_BUG_ON(sizeof(struct atio_from_isp) != 64); 1926 BUILD_BUG_ON(sizeof(struct ba_acc_le) != 12); 1927 BUILD_BUG_ON(sizeof(struct ba_rjt_le) != 4); 1928 BUILD_BUG_ON(sizeof(struct ctio7_from_24xx) != 64); 1929 BUILD_BUG_ON(sizeof(struct ctio7_to_24xx) != 64); 1930 BUILD_BUG_ON(sizeof(struct ctio_crc2_to_fw) != 64); 1931 BUILD_BUG_ON(sizeof(struct ctio_crc_from_fw) != 64); 1932 BUILD_BUG_ON(sizeof(struct ctio_to_2xxx) != 64); 1933 BUILD_BUG_ON(sizeof(struct fcp_hdr) != 24); 1934 BUILD_BUG_ON(sizeof(struct fcp_hdr_le) != 24); 1935 BUILD_BUG_ON(sizeof(struct nack_to_isp) != 64); 1936 1937 ret = tcm_qla2xxx_register_configfs(); 1938 if (ret < 0) 1939 return ret; 1940 1941 return 0; 1942 } 1943 1944 static void __exit tcm_qla2xxx_exit(void) 1945 { 1946 tcm_qla2xxx_deregister_configfs(); 1947 } 1948 1949 MODULE_DESCRIPTION("TCM QLA24XX+ series NPIV enabled fabric driver"); 1950 MODULE_LICENSE("GPL"); 1951 module_init(tcm_qla2xxx_init); 1952 module_exit(tcm_qla2xxx_exit); 1953