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 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 return target_submit_cmd(se_cmd, se_sess, cdb, &cmd->sense_buffer[0], 490 cmd->unpacked_lun, data_length, fcp_task_attr, 491 data_dir, target_flags); 492 } 493 494 static void tcm_qla2xxx_handle_data_work(struct work_struct *work) 495 { 496 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 497 498 /* 499 * Ensure that the complete FCP WRITE payload has been received. 500 * Otherwise return an exception via CHECK_CONDITION status. 501 */ 502 cmd->cmd_in_wq = 0; 503 cmd->cmd_sent_to_fw = 0; 504 if (cmd->aborted) { 505 transport_generic_request_failure(&cmd->se_cmd, 506 TCM_CHECK_CONDITION_ABORT_CMD); 507 return; 508 } 509 510 cmd->qpair->tgt_counters.qla_core_ret_ctio++; 511 if (!cmd->write_data_transferred) { 512 switch (cmd->dif_err_code) { 513 case DIF_ERR_GRD: 514 cmd->se_cmd.pi_err = 515 TCM_LOGICAL_BLOCK_GUARD_CHECK_FAILED; 516 break; 517 case DIF_ERR_REF: 518 cmd->se_cmd.pi_err = 519 TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED; 520 break; 521 case DIF_ERR_APP: 522 cmd->se_cmd.pi_err = 523 TCM_LOGICAL_BLOCK_APP_TAG_CHECK_FAILED; 524 break; 525 case DIF_ERR_NONE: 526 default: 527 break; 528 } 529 530 if (cmd->se_cmd.pi_err) 531 transport_generic_request_failure(&cmd->se_cmd, 532 cmd->se_cmd.pi_err); 533 else 534 transport_generic_request_failure(&cmd->se_cmd, 535 TCM_CHECK_CONDITION_ABORT_CMD); 536 537 return; 538 } 539 540 return target_execute_cmd(&cmd->se_cmd); 541 } 542 543 /* 544 * Called from qla_target.c:qlt_do_ctio_completion() 545 */ 546 static void tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd) 547 { 548 cmd->trc_flags |= TRC_DATA_IN; 549 cmd->cmd_in_wq = 1; 550 INIT_WORK(&cmd->work, tcm_qla2xxx_handle_data_work); 551 queue_work_on(smp_processor_id(), tcm_qla2xxx_free_wq, &cmd->work); 552 } 553 554 static int tcm_qla2xxx_chk_dif_tags(uint32_t tag) 555 { 556 return 0; 557 } 558 559 static int tcm_qla2xxx_dif_tags(struct qla_tgt_cmd *cmd, 560 uint16_t *pfw_prot_opts) 561 { 562 struct se_cmd *se_cmd = &cmd->se_cmd; 563 564 if (!(se_cmd->prot_checks & TARGET_DIF_CHECK_GUARD)) 565 *pfw_prot_opts |= PO_DISABLE_GUARD_CHECK; 566 567 if (!(se_cmd->prot_checks & TARGET_DIF_CHECK_APPTAG)) 568 *pfw_prot_opts |= PO_DIS_APP_TAG_VALD; 569 570 return 0; 571 } 572 573 /* 574 * Called from qla_target.c:qlt_issue_task_mgmt() 575 */ 576 static int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *mcmd, u64 lun, 577 uint16_t tmr_func, uint32_t tag) 578 { 579 struct fc_port *sess = mcmd->sess; 580 struct se_cmd *se_cmd = &mcmd->se_cmd; 581 int transl_tmr_func = 0; 582 583 switch (tmr_func) { 584 case QLA_TGT_ABTS: 585 pr_debug("%ld: ABTS received\n", sess->vha->host_no); 586 transl_tmr_func = TMR_ABORT_TASK; 587 break; 588 case QLA_TGT_2G_ABORT_TASK: 589 pr_debug("%ld: 2G Abort Task received\n", sess->vha->host_no); 590 transl_tmr_func = TMR_ABORT_TASK; 591 break; 592 case QLA_TGT_CLEAR_ACA: 593 pr_debug("%ld: CLEAR_ACA received\n", sess->vha->host_no); 594 transl_tmr_func = TMR_CLEAR_ACA; 595 break; 596 case QLA_TGT_TARGET_RESET: 597 pr_debug("%ld: TARGET_RESET received\n", sess->vha->host_no); 598 transl_tmr_func = TMR_TARGET_WARM_RESET; 599 break; 600 case QLA_TGT_LUN_RESET: 601 pr_debug("%ld: LUN_RESET received\n", sess->vha->host_no); 602 transl_tmr_func = TMR_LUN_RESET; 603 break; 604 case QLA_TGT_CLEAR_TS: 605 pr_debug("%ld: CLEAR_TS received\n", sess->vha->host_no); 606 transl_tmr_func = TMR_CLEAR_TASK_SET; 607 break; 608 case QLA_TGT_ABORT_TS: 609 pr_debug("%ld: ABORT_TS received\n", sess->vha->host_no); 610 transl_tmr_func = TMR_ABORT_TASK_SET; 611 break; 612 default: 613 pr_debug("%ld: Unknown task mgmt fn 0x%x\n", 614 sess->vha->host_no, tmr_func); 615 return -ENOSYS; 616 } 617 618 return target_submit_tmr(se_cmd, sess->se_sess, NULL, lun, mcmd, 619 transl_tmr_func, GFP_ATOMIC, tag, TARGET_SCF_ACK_KREF); 620 } 621 622 static struct qla_tgt_cmd *tcm_qla2xxx_find_cmd_by_tag(struct fc_port *sess, 623 uint64_t tag) 624 { 625 struct qla_tgt_cmd *cmd; 626 unsigned long flags; 627 628 if (!sess->se_sess) 629 return NULL; 630 631 spin_lock_irqsave(&sess->sess_cmd_lock, flags); 632 list_for_each_entry(cmd, &sess->sess_cmd_list, sess_cmd_list) { 633 if (cmd->se_cmd.tag == tag) 634 goto done; 635 } 636 cmd = NULL; 637 done: 638 spin_unlock_irqrestore(&sess->sess_cmd_lock, flags); 639 640 return cmd; 641 } 642 643 static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd) 644 { 645 struct qla_tgt_cmd *cmd = container_of(se_cmd, 646 struct qla_tgt_cmd, se_cmd); 647 struct scsi_qla_host *vha = cmd->vha; 648 649 if (cmd->aborted) { 650 /* Cmd can loop during Q-full. tcm_qla2xxx_aborted_task 651 * can get ahead of this cmd. tcm_qla2xxx_aborted_task 652 * already kick start the free. 653 */ 654 pr_debug("queue_data_in aborted cmd[%p] refcount %d " 655 "transport_state %x, t_state %x, se_cmd_flags %x\n", 656 cmd, kref_read(&cmd->se_cmd.cmd_kref), 657 cmd->se_cmd.transport_state, 658 cmd->se_cmd.t_state, 659 cmd->se_cmd.se_cmd_flags); 660 vha->hw->tgt.tgt_ops->free_cmd(cmd); 661 return 0; 662 } 663 664 cmd->trc_flags |= TRC_XMIT_DATA; 665 cmd->bufflen = se_cmd->data_length; 666 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd); 667 668 cmd->sg_cnt = se_cmd->t_data_nents; 669 cmd->sg = se_cmd->t_data_sg; 670 cmd->offset = 0; 671 672 cmd->prot_sg_cnt = se_cmd->t_prot_nents; 673 cmd->prot_sg = se_cmd->t_prot_sg; 674 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size; 675 se_cmd->pi_err = 0; 676 677 /* 678 * Now queue completed DATA_IN the qla2xxx LLD and response ring 679 */ 680 return qlt_xmit_response(cmd, QLA_TGT_XMIT_DATA|QLA_TGT_XMIT_STATUS, 681 se_cmd->scsi_status); 682 } 683 684 static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd) 685 { 686 struct qla_tgt_cmd *cmd = container_of(se_cmd, 687 struct qla_tgt_cmd, se_cmd); 688 struct scsi_qla_host *vha = cmd->vha; 689 int xmit_type = QLA_TGT_XMIT_STATUS; 690 691 if (cmd->aborted) { 692 /* 693 * Cmd can loop during Q-full. tcm_qla2xxx_aborted_task 694 * can get ahead of this cmd. tcm_qla2xxx_aborted_task 695 * already kick start the free. 696 */ 697 pr_debug( 698 "queue_data_in aborted cmd[%p] refcount %d transport_state %x, t_state %x, se_cmd_flags %x\n", 699 cmd, kref_read(&cmd->se_cmd.cmd_kref), 700 cmd->se_cmd.transport_state, cmd->se_cmd.t_state, 701 cmd->se_cmd.se_cmd_flags); 702 vha->hw->tgt.tgt_ops->free_cmd(cmd); 703 return 0; 704 } 705 cmd->bufflen = se_cmd->data_length; 706 cmd->sg = NULL; 707 cmd->sg_cnt = 0; 708 cmd->offset = 0; 709 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd); 710 cmd->trc_flags |= TRC_XMIT_STATUS; 711 712 if (se_cmd->data_direction == DMA_FROM_DEVICE) { 713 /* 714 * For FCP_READ with CHECK_CONDITION status, clear cmd->bufflen 715 * for qla_tgt_xmit_response LLD code 716 */ 717 if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) { 718 se_cmd->se_cmd_flags &= ~SCF_OVERFLOW_BIT; 719 se_cmd->residual_count = 0; 720 } 721 se_cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT; 722 se_cmd->residual_count += se_cmd->data_length; 723 724 cmd->bufflen = 0; 725 } 726 /* 727 * Now queue status response to qla2xxx LLD code and response ring 728 */ 729 return qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status); 730 } 731 732 static void tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd) 733 { 734 struct se_tmr_req *se_tmr = se_cmd->se_tmr_req; 735 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd, 736 struct qla_tgt_mgmt_cmd, se_cmd); 737 738 pr_debug("queue_tm_rsp: mcmd: %p func: 0x%02x response: 0x%02x\n", 739 mcmd, se_tmr->function, se_tmr->response); 740 /* 741 * Do translation between TCM TM response codes and 742 * QLA2xxx FC TM response codes. 743 */ 744 switch (se_tmr->response) { 745 case TMR_FUNCTION_COMPLETE: 746 mcmd->fc_tm_rsp = FC_TM_SUCCESS; 747 break; 748 case TMR_TASK_DOES_NOT_EXIST: 749 mcmd->fc_tm_rsp = FC_TM_BAD_CMD; 750 break; 751 case TMR_FUNCTION_REJECTED: 752 mcmd->fc_tm_rsp = FC_TM_REJECT; 753 break; 754 case TMR_LUN_DOES_NOT_EXIST: 755 default: 756 mcmd->fc_tm_rsp = FC_TM_FAILED; 757 break; 758 } 759 /* 760 * Queue the TM response to QLA2xxx LLD to build a 761 * CTIO response packet. 762 */ 763 qlt_xmit_tm_rsp(mcmd); 764 } 765 766 static void tcm_qla2xxx_aborted_task(struct se_cmd *se_cmd) 767 { 768 struct qla_tgt_cmd *cmd; 769 unsigned long flags; 770 771 if (se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) 772 return; 773 774 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd); 775 776 spin_lock_irqsave(&cmd->sess->sess_cmd_lock, flags); 777 list_del_init(&cmd->sess_cmd_list); 778 spin_unlock_irqrestore(&cmd->sess->sess_cmd_lock, flags); 779 780 qlt_abort_cmd(cmd); 781 } 782 783 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *, 784 struct tcm_qla2xxx_nacl *, struct fc_port *); 785 /* 786 * Expected to be called with struct qla_hw_data->tgt.sess_lock held 787 */ 788 static void tcm_qla2xxx_clear_nacl_from_fcport_map(struct fc_port *sess) 789 { 790 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl; 791 struct se_portal_group *se_tpg = se_nacl->se_tpg; 792 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn; 793 struct tcm_qla2xxx_lport *lport = container_of(se_wwn, 794 struct tcm_qla2xxx_lport, lport_wwn); 795 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl, 796 struct tcm_qla2xxx_nacl, se_node_acl); 797 void *node; 798 799 pr_debug("fc_rport domain: port_id 0x%06x\n", nacl->nport_id); 800 801 node = btree_remove32(&lport->lport_fcport_map, nacl->nport_id); 802 if (WARN_ON(node && (node != se_nacl))) { 803 /* 804 * The nacl no longer matches what we think it should be. 805 * Most likely a new dynamic acl has been added while 806 * someone dropped the hardware lock. It clearly is a 807 * bug elsewhere, but this bit can't make things worse. 808 */ 809 btree_insert32(&lport->lport_fcport_map, nacl->nport_id, 810 node, GFP_ATOMIC); 811 } 812 813 pr_debug("Removed from fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%06x\n", 814 se_nacl, nacl->nport_wwnn, nacl->nport_id); 815 /* 816 * Now clear the se_nacl and session pointers from our HW lport lookup 817 * table mapping for this initiator's fabric S_ID and LOOP_ID entries. 818 * 819 * This is done ahead of callbacks into tcm_qla2xxx_free_session() -> 820 * target_wait_for_sess_cmds() before the session waits for outstanding 821 * I/O to complete, to avoid a race between session shutdown execution 822 * and incoming ATIOs or TMRs picking up a stale se_node_act reference. 823 */ 824 tcm_qla2xxx_clear_sess_lookup(lport, nacl, sess); 825 } 826 827 static void tcm_qla2xxx_shutdown_sess(struct fc_port *sess) 828 { 829 target_stop_session(sess->se_sess); 830 } 831 832 static int tcm_qla2xxx_init_nodeacl(struct se_node_acl *se_nacl, 833 const char *name) 834 { 835 struct tcm_qla2xxx_nacl *nacl = 836 container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 837 u64 wwnn; 838 839 if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0) 840 return -EINVAL; 841 842 nacl->nport_wwnn = wwnn; 843 tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn); 844 845 return 0; 846 } 847 848 /* Start items for tcm_qla2xxx_tpg_attrib_cit */ 849 850 #define DEF_QLA_TPG_ATTRIB(name) \ 851 \ 852 static ssize_t tcm_qla2xxx_tpg_attrib_##name##_show( \ 853 struct config_item *item, char *page) \ 854 { \ 855 struct se_portal_group *se_tpg = attrib_to_tpg(item); \ 856 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \ 857 struct tcm_qla2xxx_tpg, se_tpg); \ 858 \ 859 return sprintf(page, "%d\n", tpg->tpg_attrib.name); \ 860 } \ 861 \ 862 static ssize_t tcm_qla2xxx_tpg_attrib_##name##_store( \ 863 struct config_item *item, const char *page, size_t count) \ 864 { \ 865 struct se_portal_group *se_tpg = attrib_to_tpg(item); \ 866 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \ 867 struct tcm_qla2xxx_tpg, se_tpg); \ 868 struct tcm_qla2xxx_tpg_attrib *a = &tpg->tpg_attrib; \ 869 unsigned long val; \ 870 int ret; \ 871 \ 872 ret = kstrtoul(page, 0, &val); \ 873 if (ret < 0) { \ 874 pr_err("kstrtoul() failed with" \ 875 " ret: %d\n", ret); \ 876 return -EINVAL; \ 877 } \ 878 \ 879 if ((val != 0) && (val != 1)) { \ 880 pr_err("Illegal boolean value %lu\n", val); \ 881 return -EINVAL; \ 882 } \ 883 \ 884 a->name = val; \ 885 \ 886 return count; \ 887 } \ 888 CONFIGFS_ATTR(tcm_qla2xxx_tpg_attrib_, name) 889 890 DEF_QLA_TPG_ATTRIB(generate_node_acls); 891 DEF_QLA_TPG_ATTRIB(cache_dynamic_acls); 892 DEF_QLA_TPG_ATTRIB(demo_mode_write_protect); 893 DEF_QLA_TPG_ATTRIB(prod_mode_write_protect); 894 DEF_QLA_TPG_ATTRIB(demo_mode_login_only); 895 #ifdef CONFIG_TCM_QLA2XXX_DEBUG 896 DEF_QLA_TPG_ATTRIB(jam_host); 897 #endif 898 899 static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = { 900 &tcm_qla2xxx_tpg_attrib_attr_generate_node_acls, 901 &tcm_qla2xxx_tpg_attrib_attr_cache_dynamic_acls, 902 &tcm_qla2xxx_tpg_attrib_attr_demo_mode_write_protect, 903 &tcm_qla2xxx_tpg_attrib_attr_prod_mode_write_protect, 904 &tcm_qla2xxx_tpg_attrib_attr_demo_mode_login_only, 905 #ifdef CONFIG_TCM_QLA2XXX_DEBUG 906 &tcm_qla2xxx_tpg_attrib_attr_jam_host, 907 #endif 908 NULL, 909 }; 910 911 /* End items for tcm_qla2xxx_tpg_attrib_cit */ 912 913 static ssize_t tcm_qla2xxx_tpg_enable_show(struct config_item *item, 914 char *page) 915 { 916 struct se_portal_group *se_tpg = to_tpg(item); 917 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 918 struct tcm_qla2xxx_tpg, se_tpg); 919 920 return snprintf(page, PAGE_SIZE, "%d\n", 921 atomic_read(&tpg->lport_tpg_enabled)); 922 } 923 924 static ssize_t tcm_qla2xxx_tpg_enable_store(struct config_item *item, 925 const char *page, size_t count) 926 { 927 struct se_portal_group *se_tpg = to_tpg(item); 928 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn; 929 struct tcm_qla2xxx_lport *lport = container_of(se_wwn, 930 struct tcm_qla2xxx_lport, lport_wwn); 931 struct scsi_qla_host *vha = lport->qla_vha; 932 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 933 struct tcm_qla2xxx_tpg, se_tpg); 934 unsigned long op; 935 int rc; 936 937 rc = kstrtoul(page, 0, &op); 938 if (rc < 0) { 939 pr_err("kstrtoul() returned %d\n", rc); 940 return -EINVAL; 941 } 942 if ((op != 1) && (op != 0)) { 943 pr_err("Illegal value for tpg_enable: %lu\n", op); 944 return -EINVAL; 945 } 946 if (op) { 947 if (atomic_read(&tpg->lport_tpg_enabled)) 948 return -EEXIST; 949 950 atomic_set(&tpg->lport_tpg_enabled, 1); 951 qlt_enable_vha(vha); 952 } else { 953 if (!atomic_read(&tpg->lport_tpg_enabled)) 954 return count; 955 956 atomic_set(&tpg->lport_tpg_enabled, 0); 957 qlt_stop_phase1(vha->vha_tgt.qla_tgt); 958 qlt_stop_phase2(vha->vha_tgt.qla_tgt); 959 } 960 961 return count; 962 } 963 964 static ssize_t tcm_qla2xxx_tpg_dynamic_sessions_show(struct config_item *item, 965 char *page) 966 { 967 return target_show_dynamic_sessions(to_tpg(item), page); 968 } 969 970 static ssize_t tcm_qla2xxx_tpg_fabric_prot_type_store(struct config_item *item, 971 const char *page, size_t count) 972 { 973 struct se_portal_group *se_tpg = to_tpg(item); 974 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 975 struct tcm_qla2xxx_tpg, se_tpg); 976 unsigned long val; 977 int ret = kstrtoul(page, 0, &val); 978 979 if (ret) { 980 pr_err("kstrtoul() returned %d for fabric_prot_type\n", ret); 981 return ret; 982 } 983 if (val != 0 && val != 1 && val != 3) { 984 pr_err("Invalid qla2xxx fabric_prot_type: %lu\n", val); 985 return -EINVAL; 986 } 987 tpg->tpg_attrib.fabric_prot_type = val; 988 989 return count; 990 } 991 992 static ssize_t tcm_qla2xxx_tpg_fabric_prot_type_show(struct config_item *item, 993 char *page) 994 { 995 struct se_portal_group *se_tpg = to_tpg(item); 996 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 997 struct tcm_qla2xxx_tpg, se_tpg); 998 999 return sprintf(page, "%d\n", tpg->tpg_attrib.fabric_prot_type); 1000 } 1001 1002 CONFIGFS_ATTR(tcm_qla2xxx_tpg_, enable); 1003 CONFIGFS_ATTR_RO(tcm_qla2xxx_tpg_, dynamic_sessions); 1004 CONFIGFS_ATTR(tcm_qla2xxx_tpg_, fabric_prot_type); 1005 1006 static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = { 1007 &tcm_qla2xxx_tpg_attr_enable, 1008 &tcm_qla2xxx_tpg_attr_dynamic_sessions, 1009 &tcm_qla2xxx_tpg_attr_fabric_prot_type, 1010 NULL, 1011 }; 1012 1013 static struct se_portal_group *tcm_qla2xxx_make_tpg(struct se_wwn *wwn, 1014 const char *name) 1015 { 1016 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1017 struct tcm_qla2xxx_lport, lport_wwn); 1018 struct tcm_qla2xxx_tpg *tpg; 1019 unsigned long tpgt; 1020 int ret; 1021 1022 if (strstr(name, "tpgt_") != name) 1023 return ERR_PTR(-EINVAL); 1024 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX) 1025 return ERR_PTR(-EINVAL); 1026 1027 if ((tpgt != 1)) { 1028 pr_err("In non NPIV mode, a single TPG=1 is used for HW port mappings\n"); 1029 return ERR_PTR(-ENOSYS); 1030 } 1031 1032 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL); 1033 if (!tpg) { 1034 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n"); 1035 return ERR_PTR(-ENOMEM); 1036 } 1037 tpg->lport = lport; 1038 tpg->lport_tpgt = tpgt; 1039 /* 1040 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic 1041 * NodeACLs 1042 */ 1043 tpg->tpg_attrib.generate_node_acls = 1; 1044 tpg->tpg_attrib.demo_mode_write_protect = 1; 1045 tpg->tpg_attrib.cache_dynamic_acls = 1; 1046 tpg->tpg_attrib.demo_mode_login_only = 1; 1047 tpg->tpg_attrib.jam_host = 0; 1048 1049 ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP); 1050 if (ret < 0) { 1051 kfree(tpg); 1052 return NULL; 1053 } 1054 1055 lport->tpg_1 = tpg; 1056 1057 return &tpg->se_tpg; 1058 } 1059 1060 static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg) 1061 { 1062 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1063 struct tcm_qla2xxx_tpg, se_tpg); 1064 struct tcm_qla2xxx_lport *lport = tpg->lport; 1065 struct scsi_qla_host *vha = lport->qla_vha; 1066 /* 1067 * Call into qla2x_target.c LLD logic to shutdown the active 1068 * FC Nexuses and disable target mode operation for this qla_hw_data 1069 */ 1070 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stop) 1071 qlt_stop_phase1(vha->vha_tgt.qla_tgt); 1072 1073 core_tpg_deregister(se_tpg); 1074 /* 1075 * Clear local TPG=1 pointer for non NPIV mode. 1076 */ 1077 lport->tpg_1 = NULL; 1078 kfree(tpg); 1079 } 1080 1081 static ssize_t tcm_qla2xxx_npiv_tpg_enable_show(struct config_item *item, 1082 char *page) 1083 { 1084 return tcm_qla2xxx_tpg_enable_show(item, page); 1085 } 1086 1087 static ssize_t tcm_qla2xxx_npiv_tpg_enable_store(struct config_item *item, 1088 const char *page, size_t count) 1089 { 1090 struct se_portal_group *se_tpg = to_tpg(item); 1091 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn; 1092 struct tcm_qla2xxx_lport *lport = container_of(se_wwn, 1093 struct tcm_qla2xxx_lport, lport_wwn); 1094 struct scsi_qla_host *vha = lport->qla_vha; 1095 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1096 struct tcm_qla2xxx_tpg, se_tpg); 1097 unsigned long op; 1098 int rc; 1099 1100 rc = kstrtoul(page, 0, &op); 1101 if (rc < 0) { 1102 pr_err("kstrtoul() returned %d\n", rc); 1103 return -EINVAL; 1104 } 1105 if ((op != 1) && (op != 0)) { 1106 pr_err("Illegal value for tpg_enable: %lu\n", op); 1107 return -EINVAL; 1108 } 1109 if (op) { 1110 if (atomic_read(&tpg->lport_tpg_enabled)) 1111 return -EEXIST; 1112 1113 atomic_set(&tpg->lport_tpg_enabled, 1); 1114 qlt_enable_vha(vha); 1115 } else { 1116 if (!atomic_read(&tpg->lport_tpg_enabled)) 1117 return count; 1118 1119 atomic_set(&tpg->lport_tpg_enabled, 0); 1120 qlt_stop_phase1(vha->vha_tgt.qla_tgt); 1121 qlt_stop_phase2(vha->vha_tgt.qla_tgt); 1122 } 1123 1124 return count; 1125 } 1126 1127 CONFIGFS_ATTR(tcm_qla2xxx_npiv_tpg_, enable); 1128 1129 static struct configfs_attribute *tcm_qla2xxx_npiv_tpg_attrs[] = { 1130 &tcm_qla2xxx_npiv_tpg_attr_enable, 1131 NULL, 1132 }; 1133 1134 static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg(struct se_wwn *wwn, 1135 const char *name) 1136 { 1137 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1138 struct tcm_qla2xxx_lport, lport_wwn); 1139 struct tcm_qla2xxx_tpg *tpg; 1140 unsigned long tpgt; 1141 int ret; 1142 1143 if (strstr(name, "tpgt_") != name) 1144 return ERR_PTR(-EINVAL); 1145 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX) 1146 return ERR_PTR(-EINVAL); 1147 1148 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL); 1149 if (!tpg) { 1150 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n"); 1151 return ERR_PTR(-ENOMEM); 1152 } 1153 tpg->lport = lport; 1154 tpg->lport_tpgt = tpgt; 1155 1156 /* 1157 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic 1158 * NodeACLs 1159 */ 1160 tpg->tpg_attrib.generate_node_acls = 1; 1161 tpg->tpg_attrib.demo_mode_write_protect = 1; 1162 tpg->tpg_attrib.cache_dynamic_acls = 1; 1163 tpg->tpg_attrib.demo_mode_login_only = 1; 1164 1165 ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP); 1166 if (ret < 0) { 1167 kfree(tpg); 1168 return NULL; 1169 } 1170 lport->tpg_1 = tpg; 1171 return &tpg->se_tpg; 1172 } 1173 1174 /* 1175 * Expected to be called with struct qla_hw_data->tgt.sess_lock held 1176 */ 1177 static struct fc_port *tcm_qla2xxx_find_sess_by_s_id(scsi_qla_host_t *vha, 1178 const be_id_t s_id) 1179 { 1180 struct tcm_qla2xxx_lport *lport; 1181 struct se_node_acl *se_nacl; 1182 struct tcm_qla2xxx_nacl *nacl; 1183 u32 key; 1184 1185 lport = vha->vha_tgt.target_lport_ptr; 1186 if (!lport) { 1187 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1188 dump_stack(); 1189 return NULL; 1190 } 1191 1192 key = sid_to_key(s_id); 1193 pr_debug("find_sess_by_s_id: 0x%06x\n", key); 1194 1195 se_nacl = btree_lookup32(&lport->lport_fcport_map, key); 1196 if (!se_nacl) { 1197 pr_debug("Unable to locate s_id: 0x%06x\n", key); 1198 return NULL; 1199 } 1200 pr_debug("find_sess_by_s_id: located se_nacl: %p, initiatorname: %s\n", 1201 se_nacl, se_nacl->initiatorname); 1202 1203 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1204 if (!nacl->fc_port) { 1205 pr_err("Unable to locate struct fc_port\n"); 1206 return NULL; 1207 } 1208 1209 return nacl->fc_port; 1210 } 1211 1212 /* 1213 * Expected to be called with struct qla_hw_data->tgt.sess_lock held 1214 */ 1215 static void tcm_qla2xxx_set_sess_by_s_id( 1216 struct tcm_qla2xxx_lport *lport, 1217 struct se_node_acl *new_se_nacl, 1218 struct tcm_qla2xxx_nacl *nacl, 1219 struct se_session *se_sess, 1220 struct fc_port *fc_port, 1221 be_id_t s_id) 1222 { 1223 u32 key; 1224 void *slot; 1225 int rc; 1226 1227 key = sid_to_key(s_id); 1228 pr_debug("set_sess_by_s_id: %06x\n", key); 1229 1230 slot = btree_lookup32(&lport->lport_fcport_map, key); 1231 if (!slot) { 1232 if (new_se_nacl) { 1233 pr_debug("Setting up new fc_port entry to new_se_nacl\n"); 1234 nacl->nport_id = key; 1235 rc = btree_insert32(&lport->lport_fcport_map, key, 1236 new_se_nacl, GFP_ATOMIC); 1237 if (rc) 1238 printk(KERN_ERR "Unable to insert s_id into fcport_map: %06x\n", 1239 (int)key); 1240 } else { 1241 pr_debug("Wiping nonexisting fc_port entry\n"); 1242 } 1243 1244 fc_port->se_sess = se_sess; 1245 nacl->fc_port = fc_port; 1246 return; 1247 } 1248 1249 if (nacl->fc_port) { 1250 if (new_se_nacl == NULL) { 1251 pr_debug("Clearing existing nacl->fc_port and fc_port entry\n"); 1252 btree_remove32(&lport->lport_fcport_map, key); 1253 nacl->fc_port = NULL; 1254 return; 1255 } 1256 pr_debug("Replacing existing nacl->fc_port and fc_port entry\n"); 1257 btree_update32(&lport->lport_fcport_map, key, new_se_nacl); 1258 fc_port->se_sess = se_sess; 1259 nacl->fc_port = fc_port; 1260 return; 1261 } 1262 1263 if (new_se_nacl == NULL) { 1264 pr_debug("Clearing existing fc_port entry\n"); 1265 btree_remove32(&lport->lport_fcport_map, key); 1266 return; 1267 } 1268 1269 pr_debug("Replacing existing fc_port entry w/o active nacl->fc_port\n"); 1270 btree_update32(&lport->lport_fcport_map, key, new_se_nacl); 1271 fc_port->se_sess = se_sess; 1272 nacl->fc_port = fc_port; 1273 1274 pr_debug("Setup nacl->fc_port %p by s_id for se_nacl: %p, initiatorname: %s\n", 1275 nacl->fc_port, new_se_nacl, new_se_nacl->initiatorname); 1276 } 1277 1278 /* 1279 * Expected to be called with struct qla_hw_data->tgt.sess_lock held 1280 */ 1281 static struct fc_port *tcm_qla2xxx_find_sess_by_loop_id( 1282 scsi_qla_host_t *vha, 1283 const uint16_t loop_id) 1284 { 1285 struct tcm_qla2xxx_lport *lport; 1286 struct se_node_acl *se_nacl; 1287 struct tcm_qla2xxx_nacl *nacl; 1288 struct tcm_qla2xxx_fc_loopid *fc_loopid; 1289 1290 lport = vha->vha_tgt.target_lport_ptr; 1291 if (!lport) { 1292 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1293 dump_stack(); 1294 return NULL; 1295 } 1296 1297 pr_debug("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id); 1298 1299 fc_loopid = lport->lport_loopid_map + loop_id; 1300 se_nacl = fc_loopid->se_nacl; 1301 if (!se_nacl) { 1302 pr_debug("Unable to locate se_nacl by loop_id: 0x%04x\n", 1303 loop_id); 1304 return NULL; 1305 } 1306 1307 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1308 1309 if (!nacl->fc_port) { 1310 pr_err("Unable to locate struct fc_port\n"); 1311 return NULL; 1312 } 1313 1314 return nacl->fc_port; 1315 } 1316 1317 /* 1318 * Expected to be called with struct qla_hw_data->tgt.sess_lock held 1319 */ 1320 static void tcm_qla2xxx_set_sess_by_loop_id( 1321 struct tcm_qla2xxx_lport *lport, 1322 struct se_node_acl *new_se_nacl, 1323 struct tcm_qla2xxx_nacl *nacl, 1324 struct se_session *se_sess, 1325 struct fc_port *fc_port, 1326 uint16_t loop_id) 1327 { 1328 struct se_node_acl *saved_nacl; 1329 struct tcm_qla2xxx_fc_loopid *fc_loopid; 1330 1331 pr_debug("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id); 1332 1333 fc_loopid = &((struct tcm_qla2xxx_fc_loopid *) 1334 lport->lport_loopid_map)[loop_id]; 1335 1336 saved_nacl = fc_loopid->se_nacl; 1337 if (!saved_nacl) { 1338 pr_debug("Setting up new fc_loopid->se_nacl to new_se_nacl\n"); 1339 fc_loopid->se_nacl = new_se_nacl; 1340 if (fc_port->se_sess != se_sess) 1341 fc_port->se_sess = se_sess; 1342 if (nacl->fc_port != fc_port) 1343 nacl->fc_port = fc_port; 1344 return; 1345 } 1346 1347 if (nacl->fc_port) { 1348 if (new_se_nacl == NULL) { 1349 pr_debug("Clearing nacl->fc_port and fc_loopid->se_nacl\n"); 1350 fc_loopid->se_nacl = NULL; 1351 nacl->fc_port = NULL; 1352 return; 1353 } 1354 1355 pr_debug("Replacing existing nacl->fc_port and fc_loopid->se_nacl\n"); 1356 fc_loopid->se_nacl = new_se_nacl; 1357 if (fc_port->se_sess != se_sess) 1358 fc_port->se_sess = se_sess; 1359 if (nacl->fc_port != fc_port) 1360 nacl->fc_port = fc_port; 1361 return; 1362 } 1363 1364 if (new_se_nacl == NULL) { 1365 pr_debug("Clearing fc_loopid->se_nacl\n"); 1366 fc_loopid->se_nacl = NULL; 1367 return; 1368 } 1369 1370 pr_debug("Replacing existing fc_loopid->se_nacl w/o active nacl->fc_port\n"); 1371 fc_loopid->se_nacl = new_se_nacl; 1372 if (fc_port->se_sess != se_sess) 1373 fc_port->se_sess = se_sess; 1374 if (nacl->fc_port != fc_port) 1375 nacl->fc_port = fc_port; 1376 1377 pr_debug("Setup nacl->fc_port %p by loop_id for se_nacl: %p, initiatorname: %s\n", 1378 nacl->fc_port, new_se_nacl, new_se_nacl->initiatorname); 1379 } 1380 1381 /* 1382 * Should always be called with qla_hw_data->tgt.sess_lock held. 1383 */ 1384 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *lport, 1385 struct tcm_qla2xxx_nacl *nacl, struct fc_port *sess) 1386 { 1387 struct se_session *se_sess = sess->se_sess; 1388 1389 tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess, 1390 sess, port_id_to_be_id(sess->d_id)); 1391 tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess, 1392 sess, sess->loop_id); 1393 } 1394 1395 static void tcm_qla2xxx_free_session(struct fc_port *sess) 1396 { 1397 struct qla_tgt *tgt = sess->tgt; 1398 struct qla_hw_data *ha = tgt->ha; 1399 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev); 1400 struct se_session *se_sess; 1401 struct tcm_qla2xxx_lport *lport; 1402 1403 se_sess = sess->se_sess; 1404 if (!se_sess) { 1405 pr_err("struct fc_port->se_sess is NULL\n"); 1406 dump_stack(); 1407 return; 1408 } 1409 1410 lport = vha->vha_tgt.target_lport_ptr; 1411 if (!lport) { 1412 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1413 dump_stack(); 1414 return; 1415 } 1416 target_wait_for_sess_cmds(se_sess); 1417 1418 target_remove_session(se_sess); 1419 } 1420 1421 static int tcm_qla2xxx_session_cb(struct se_portal_group *se_tpg, 1422 struct se_session *se_sess, void *p) 1423 { 1424 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1425 struct tcm_qla2xxx_tpg, se_tpg); 1426 struct tcm_qla2xxx_lport *lport = tpg->lport; 1427 struct qla_hw_data *ha = lport->qla_vha->hw; 1428 struct se_node_acl *se_nacl = se_sess->se_node_acl; 1429 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl, 1430 struct tcm_qla2xxx_nacl, se_node_acl); 1431 struct fc_port *qlat_sess = p; 1432 uint16_t loop_id = qlat_sess->loop_id; 1433 unsigned long flags; 1434 1435 /* 1436 * And now setup se_nacl and session pointers into HW lport internal 1437 * mappings for fabric S_ID and LOOP_ID. 1438 */ 1439 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1440 tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl, se_sess, qlat_sess, 1441 port_id_to_be_id(qlat_sess->d_id)); 1442 tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl, 1443 se_sess, qlat_sess, loop_id); 1444 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1445 1446 return 0; 1447 } 1448 1449 /* 1450 * Called via qlt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl() 1451 * to locate struct se_node_acl 1452 */ 1453 static int tcm_qla2xxx_check_initiator_node_acl( 1454 scsi_qla_host_t *vha, 1455 unsigned char *fc_wwpn, 1456 struct fc_port *qlat_sess) 1457 { 1458 struct qla_hw_data *ha = vha->hw; 1459 struct tcm_qla2xxx_lport *lport; 1460 struct tcm_qla2xxx_tpg *tpg; 1461 struct se_session *se_sess; 1462 unsigned char port_name[36]; 1463 int num_tags = (ha->cur_fw_xcb_count) ? ha->cur_fw_xcb_count : 1464 TCM_QLA2XXX_DEFAULT_TAGS; 1465 1466 lport = vha->vha_tgt.target_lport_ptr; 1467 if (!lport) { 1468 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1469 dump_stack(); 1470 return -EINVAL; 1471 } 1472 /* 1473 * Locate the TPG=1 reference.. 1474 */ 1475 tpg = lport->tpg_1; 1476 if (!tpg) { 1477 pr_err("Unable to locate struct tcm_qla2xxx_lport->tpg_1\n"); 1478 return -EINVAL; 1479 } 1480 /* 1481 * Format the FCP Initiator port_name into colon seperated values to 1482 * match the format by tcm_qla2xxx explict ConfigFS NodeACLs. 1483 */ 1484 memset(&port_name, 0, 36); 1485 snprintf(port_name, sizeof(port_name), "%8phC", fc_wwpn); 1486 /* 1487 * Locate our struct se_node_acl either from an explict NodeACL created 1488 * via ConfigFS, or via running in TPG demo mode. 1489 */ 1490 se_sess = target_setup_session(&tpg->se_tpg, num_tags, 1491 sizeof(struct qla_tgt_cmd), 1492 TARGET_PROT_ALL, port_name, 1493 qlat_sess, tcm_qla2xxx_session_cb); 1494 if (IS_ERR(se_sess)) 1495 return PTR_ERR(se_sess); 1496 1497 return 0; 1498 } 1499 1500 static void tcm_qla2xxx_update_sess(struct fc_port *sess, port_id_t s_id, 1501 uint16_t loop_id, bool conf_compl_supported) 1502 { 1503 struct qla_tgt *tgt = sess->tgt; 1504 struct qla_hw_data *ha = tgt->ha; 1505 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev); 1506 struct tcm_qla2xxx_lport *lport = vha->vha_tgt.target_lport_ptr; 1507 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl; 1508 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl, 1509 struct tcm_qla2xxx_nacl, se_node_acl); 1510 u32 key; 1511 1512 1513 if (sess->loop_id != loop_id || sess->d_id.b24 != s_id.b24) 1514 pr_info("Updating session %p from port %8phC loop_id %d -> %d s_id %x:%x:%x -> %x:%x:%x\n", 1515 sess, sess->port_name, 1516 sess->loop_id, loop_id, sess->d_id.b.domain, 1517 sess->d_id.b.area, sess->d_id.b.al_pa, s_id.b.domain, 1518 s_id.b.area, s_id.b.al_pa); 1519 1520 if (sess->loop_id != loop_id) { 1521 /* 1522 * Because we can shuffle loop IDs around and we 1523 * update different sessions non-atomically, we might 1524 * have overwritten this session's old loop ID 1525 * already, and we might end up overwriting some other 1526 * session that will be updated later. So we have to 1527 * be extra careful and we can't warn about those things... 1528 */ 1529 if (lport->lport_loopid_map[sess->loop_id].se_nacl == se_nacl) 1530 lport->lport_loopid_map[sess->loop_id].se_nacl = NULL; 1531 1532 lport->lport_loopid_map[loop_id].se_nacl = se_nacl; 1533 1534 sess->loop_id = loop_id; 1535 } 1536 1537 if (sess->d_id.b24 != s_id.b24) { 1538 key = (((u32) sess->d_id.b.domain << 16) | 1539 ((u32) sess->d_id.b.area << 8) | 1540 ((u32) sess->d_id.b.al_pa)); 1541 1542 if (btree_lookup32(&lport->lport_fcport_map, key)) 1543 WARN(btree_remove32(&lport->lport_fcport_map, key) != 1544 se_nacl, "Found wrong se_nacl when updating s_id %x:%x:%x\n", 1545 sess->d_id.b.domain, sess->d_id.b.area, 1546 sess->d_id.b.al_pa); 1547 else 1548 WARN(1, "No lport_fcport_map entry for s_id %x:%x:%x\n", 1549 sess->d_id.b.domain, sess->d_id.b.area, 1550 sess->d_id.b.al_pa); 1551 1552 key = (((u32) s_id.b.domain << 16) | 1553 ((u32) s_id.b.area << 8) | 1554 ((u32) s_id.b.al_pa)); 1555 1556 if (btree_lookup32(&lport->lport_fcport_map, key)) { 1557 WARN(1, "Already have lport_fcport_map entry for s_id %x:%x:%x\n", 1558 s_id.b.domain, s_id.b.area, s_id.b.al_pa); 1559 btree_update32(&lport->lport_fcport_map, key, se_nacl); 1560 } else { 1561 btree_insert32(&lport->lport_fcport_map, key, se_nacl, 1562 GFP_ATOMIC); 1563 } 1564 1565 sess->d_id = s_id; 1566 nacl->nport_id = key; 1567 } 1568 1569 sess->conf_compl_supported = conf_compl_supported; 1570 1571 } 1572 1573 /* 1574 * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path. 1575 */ 1576 static struct qla_tgt_func_tmpl tcm_qla2xxx_template = { 1577 .find_cmd_by_tag = tcm_qla2xxx_find_cmd_by_tag, 1578 .handle_cmd = tcm_qla2xxx_handle_cmd, 1579 .handle_data = tcm_qla2xxx_handle_data, 1580 .handle_tmr = tcm_qla2xxx_handle_tmr, 1581 .get_cmd = tcm_qla2xxx_get_cmd, 1582 .rel_cmd = tcm_qla2xxx_rel_cmd, 1583 .free_cmd = tcm_qla2xxx_free_cmd, 1584 .free_mcmd = tcm_qla2xxx_free_mcmd, 1585 .free_session = tcm_qla2xxx_free_session, 1586 .update_sess = tcm_qla2xxx_update_sess, 1587 .check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl, 1588 .find_sess_by_s_id = tcm_qla2xxx_find_sess_by_s_id, 1589 .find_sess_by_loop_id = tcm_qla2xxx_find_sess_by_loop_id, 1590 .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map, 1591 .put_sess = tcm_qla2xxx_put_sess, 1592 .shutdown_sess = tcm_qla2xxx_shutdown_sess, 1593 .get_dif_tags = tcm_qla2xxx_dif_tags, 1594 .chk_dif_tags = tcm_qla2xxx_chk_dif_tags, 1595 }; 1596 1597 static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport) 1598 { 1599 int rc; 1600 1601 rc = btree_init32(&lport->lport_fcport_map); 1602 if (rc) { 1603 pr_err("Unable to initialize lport->lport_fcport_map btree\n"); 1604 return rc; 1605 } 1606 1607 lport->lport_loopid_map = 1608 vzalloc(array_size(65536, 1609 sizeof(struct tcm_qla2xxx_fc_loopid))); 1610 if (!lport->lport_loopid_map) { 1611 pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n", 1612 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536); 1613 btree_destroy32(&lport->lport_fcport_map); 1614 return -ENOMEM; 1615 } 1616 pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n", 1617 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536); 1618 return 0; 1619 } 1620 1621 static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha, 1622 void *target_lport_ptr, 1623 u64 npiv_wwpn, u64 npiv_wwnn) 1624 { 1625 struct qla_hw_data *ha = vha->hw; 1626 struct tcm_qla2xxx_lport *lport = 1627 (struct tcm_qla2xxx_lport *)target_lport_ptr; 1628 /* 1629 * Setup tgt_ops, local pointer to vha and target_lport_ptr 1630 */ 1631 ha->tgt.tgt_ops = &tcm_qla2xxx_template; 1632 vha->vha_tgt.target_lport_ptr = target_lport_ptr; 1633 lport->qla_vha = vha; 1634 1635 return 0; 1636 } 1637 1638 static struct se_wwn *tcm_qla2xxx_make_lport( 1639 struct target_fabric_configfs *tf, 1640 struct config_group *group, 1641 const char *name) 1642 { 1643 struct tcm_qla2xxx_lport *lport; 1644 u64 wwpn; 1645 int ret = -ENODEV; 1646 1647 if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0) 1648 return ERR_PTR(-EINVAL); 1649 1650 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL); 1651 if (!lport) { 1652 pr_err("Unable to allocate struct tcm_qla2xxx_lport\n"); 1653 return ERR_PTR(-ENOMEM); 1654 } 1655 lport->lport_wwpn = wwpn; 1656 tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN, 1657 wwpn); 1658 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) wwpn); 1659 1660 ret = tcm_qla2xxx_init_lport(lport); 1661 if (ret != 0) 1662 goto out; 1663 1664 ret = qlt_lport_register(lport, wwpn, 0, 0, 1665 tcm_qla2xxx_lport_register_cb); 1666 if (ret != 0) 1667 goto out_lport; 1668 1669 return &lport->lport_wwn; 1670 out_lport: 1671 vfree(lport->lport_loopid_map); 1672 btree_destroy32(&lport->lport_fcport_map); 1673 out: 1674 kfree(lport); 1675 return ERR_PTR(ret); 1676 } 1677 1678 static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn) 1679 { 1680 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1681 struct tcm_qla2xxx_lport, lport_wwn); 1682 struct scsi_qla_host *vha = lport->qla_vha; 1683 struct se_node_acl *node; 1684 u32 key = 0; 1685 1686 /* 1687 * Call into qla2x_target.c LLD logic to complete the 1688 * shutdown of struct qla_tgt after the call to 1689 * qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above.. 1690 */ 1691 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stopped) 1692 qlt_stop_phase2(vha->vha_tgt.qla_tgt); 1693 1694 qlt_lport_deregister(vha); 1695 1696 vfree(lport->lport_loopid_map); 1697 btree_for_each_safe32(&lport->lport_fcport_map, key, node) 1698 btree_remove32(&lport->lport_fcport_map, key); 1699 btree_destroy32(&lport->lport_fcport_map); 1700 kfree(lport); 1701 } 1702 1703 static int tcm_qla2xxx_lport_register_npiv_cb(struct scsi_qla_host *base_vha, 1704 void *target_lport_ptr, 1705 u64 npiv_wwpn, u64 npiv_wwnn) 1706 { 1707 struct fc_vport *vport; 1708 struct Scsi_Host *sh = base_vha->host; 1709 struct scsi_qla_host *npiv_vha; 1710 struct tcm_qla2xxx_lport *lport = 1711 (struct tcm_qla2xxx_lport *)target_lport_ptr; 1712 struct tcm_qla2xxx_lport *base_lport = 1713 (struct tcm_qla2xxx_lport *)base_vha->vha_tgt.target_lport_ptr; 1714 struct fc_vport_identifiers vport_id; 1715 1716 if (qla_ini_mode_enabled(base_vha)) { 1717 pr_err("qla2xxx base_vha not enabled for target mode\n"); 1718 return -EPERM; 1719 } 1720 1721 if (!base_lport || !base_lport->tpg_1 || 1722 !atomic_read(&base_lport->tpg_1->lport_tpg_enabled)) { 1723 pr_err("qla2xxx base_lport or tpg_1 not available\n"); 1724 return -EPERM; 1725 } 1726 1727 memset(&vport_id, 0, sizeof(vport_id)); 1728 vport_id.port_name = npiv_wwpn; 1729 vport_id.node_name = npiv_wwnn; 1730 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR; 1731 vport_id.vport_type = FC_PORTTYPE_NPIV; 1732 vport_id.disable = false; 1733 1734 vport = fc_vport_create(sh, 0, &vport_id); 1735 if (!vport) { 1736 pr_err("fc_vport_create failed for qla2xxx_npiv\n"); 1737 return -ENODEV; 1738 } 1739 /* 1740 * Setup local pointer to NPIV vhba + target_lport_ptr 1741 */ 1742 npiv_vha = (struct scsi_qla_host *)vport->dd_data; 1743 npiv_vha->vha_tgt.target_lport_ptr = target_lport_ptr; 1744 lport->qla_vha = npiv_vha; 1745 scsi_host_get(npiv_vha->host); 1746 return 0; 1747 } 1748 1749 1750 static struct se_wwn *tcm_qla2xxx_npiv_make_lport( 1751 struct target_fabric_configfs *tf, 1752 struct config_group *group, 1753 const char *name) 1754 { 1755 struct tcm_qla2xxx_lport *lport; 1756 u64 phys_wwpn, npiv_wwpn, npiv_wwnn; 1757 char *p, tmp[128]; 1758 int ret; 1759 1760 snprintf(tmp, 128, "%s", name); 1761 1762 p = strchr(tmp, '@'); 1763 if (!p) { 1764 pr_err("Unable to locate NPIV '@' separator\n"); 1765 return ERR_PTR(-EINVAL); 1766 } 1767 *p++ = '\0'; 1768 1769 if (tcm_qla2xxx_parse_wwn(tmp, &phys_wwpn, 1) < 0) 1770 return ERR_PTR(-EINVAL); 1771 1772 if (tcm_qla2xxx_npiv_parse_wwn(p, strlen(p)+1, 1773 &npiv_wwpn, &npiv_wwnn) < 0) 1774 return ERR_PTR(-EINVAL); 1775 1776 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL); 1777 if (!lport) { 1778 pr_err("Unable to allocate struct tcm_qla2xxx_lport for NPIV\n"); 1779 return ERR_PTR(-ENOMEM); 1780 } 1781 lport->lport_npiv_wwpn = npiv_wwpn; 1782 lport->lport_npiv_wwnn = npiv_wwnn; 1783 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) npiv_wwpn); 1784 1785 ret = tcm_qla2xxx_init_lport(lport); 1786 if (ret != 0) 1787 goto out; 1788 1789 ret = qlt_lport_register(lport, phys_wwpn, npiv_wwpn, npiv_wwnn, 1790 tcm_qla2xxx_lport_register_npiv_cb); 1791 if (ret != 0) 1792 goto out_lport; 1793 1794 return &lport->lport_wwn; 1795 out_lport: 1796 vfree(lport->lport_loopid_map); 1797 btree_destroy32(&lport->lport_fcport_map); 1798 out: 1799 kfree(lport); 1800 return ERR_PTR(ret); 1801 } 1802 1803 static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn) 1804 { 1805 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1806 struct tcm_qla2xxx_lport, lport_wwn); 1807 struct scsi_qla_host *npiv_vha = lport->qla_vha; 1808 struct qla_hw_data *ha = npiv_vha->hw; 1809 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 1810 1811 scsi_host_put(npiv_vha->host); 1812 /* 1813 * Notify libfc that we want to release the vha->fc_vport 1814 */ 1815 fc_vport_terminate(npiv_vha->fc_vport); 1816 scsi_host_put(base_vha->host); 1817 kfree(lport); 1818 } 1819 1820 1821 static ssize_t tcm_qla2xxx_wwn_version_show(struct config_item *item, 1822 char *page) 1823 { 1824 return sprintf(page, 1825 "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s on %s\n", 1826 QLA2XXX_VERSION, utsname()->sysname, 1827 utsname()->machine, utsname()->release); 1828 } 1829 1830 CONFIGFS_ATTR_RO(tcm_qla2xxx_wwn_, version); 1831 1832 static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = { 1833 &tcm_qla2xxx_wwn_attr_version, 1834 NULL, 1835 }; 1836 1837 static const struct target_core_fabric_ops tcm_qla2xxx_ops = { 1838 .module = THIS_MODULE, 1839 .fabric_name = "qla2xxx", 1840 .node_acl_size = sizeof(struct tcm_qla2xxx_nacl), 1841 /* 1842 * XXX: Limit assumes single page per scatter-gather-list entry. 1843 * Current maximum is ~4.9 MB per se_cmd->t_data_sg with PAGE_SIZE=4096 1844 */ 1845 .max_data_sg_nents = 1200, 1846 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn, 1847 .tpg_get_tag = tcm_qla2xxx_get_tag, 1848 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode, 1849 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache, 1850 .tpg_check_demo_mode_write_protect = 1851 tcm_qla2xxx_check_demo_write_protect, 1852 .tpg_check_prod_mode_write_protect = 1853 tcm_qla2xxx_check_prod_write_protect, 1854 .tpg_check_prot_fabric_only = tcm_qla2xxx_check_prot_fabric_only, 1855 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only, 1856 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index, 1857 .check_stop_free = tcm_qla2xxx_check_stop_free, 1858 .release_cmd = tcm_qla2xxx_release_cmd, 1859 .close_session = tcm_qla2xxx_close_session, 1860 .sess_get_index = tcm_qla2xxx_sess_get_index, 1861 .sess_get_initiator_sid = NULL, 1862 .write_pending = tcm_qla2xxx_write_pending, 1863 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs, 1864 .get_cmd_state = tcm_qla2xxx_get_cmd_state, 1865 .queue_data_in = tcm_qla2xxx_queue_data_in, 1866 .queue_status = tcm_qla2xxx_queue_status, 1867 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp, 1868 .aborted_task = tcm_qla2xxx_aborted_task, 1869 /* 1870 * Setup function pointers for generic logic in 1871 * target_core_fabric_configfs.c 1872 */ 1873 .fabric_make_wwn = tcm_qla2xxx_make_lport, 1874 .fabric_drop_wwn = tcm_qla2xxx_drop_lport, 1875 .fabric_make_tpg = tcm_qla2xxx_make_tpg, 1876 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg, 1877 .fabric_init_nodeacl = tcm_qla2xxx_init_nodeacl, 1878 1879 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs, 1880 .tfc_tpg_base_attrs = tcm_qla2xxx_tpg_attrs, 1881 .tfc_tpg_attrib_attrs = tcm_qla2xxx_tpg_attrib_attrs, 1882 }; 1883 1884 static const struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = { 1885 .module = THIS_MODULE, 1886 .fabric_name = "qla2xxx_npiv", 1887 .node_acl_size = sizeof(struct tcm_qla2xxx_nacl), 1888 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn, 1889 .tpg_get_tag = tcm_qla2xxx_get_tag, 1890 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode, 1891 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache, 1892 .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_demo_mode, 1893 .tpg_check_prod_mode_write_protect = 1894 tcm_qla2xxx_check_prod_write_protect, 1895 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only, 1896 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index, 1897 .check_stop_free = tcm_qla2xxx_check_stop_free, 1898 .release_cmd = tcm_qla2xxx_release_cmd, 1899 .close_session = tcm_qla2xxx_close_session, 1900 .sess_get_index = tcm_qla2xxx_sess_get_index, 1901 .sess_get_initiator_sid = NULL, 1902 .write_pending = tcm_qla2xxx_write_pending, 1903 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs, 1904 .get_cmd_state = tcm_qla2xxx_get_cmd_state, 1905 .queue_data_in = tcm_qla2xxx_queue_data_in, 1906 .queue_status = tcm_qla2xxx_queue_status, 1907 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp, 1908 .aborted_task = tcm_qla2xxx_aborted_task, 1909 /* 1910 * Setup function pointers for generic logic in 1911 * target_core_fabric_configfs.c 1912 */ 1913 .fabric_make_wwn = tcm_qla2xxx_npiv_make_lport, 1914 .fabric_drop_wwn = tcm_qla2xxx_npiv_drop_lport, 1915 .fabric_make_tpg = tcm_qla2xxx_npiv_make_tpg, 1916 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg, 1917 .fabric_init_nodeacl = tcm_qla2xxx_init_nodeacl, 1918 1919 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs, 1920 .tfc_tpg_base_attrs = tcm_qla2xxx_npiv_tpg_attrs, 1921 }; 1922 1923 static int tcm_qla2xxx_register_configfs(void) 1924 { 1925 int ret; 1926 1927 pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on %s\n", 1928 QLA2XXX_VERSION, utsname()->sysname, 1929 utsname()->machine, utsname()->release); 1930 1931 ret = target_register_template(&tcm_qla2xxx_ops); 1932 if (ret) 1933 return ret; 1934 1935 ret = target_register_template(&tcm_qla2xxx_npiv_ops); 1936 if (ret) 1937 goto out_fabric; 1938 1939 tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free", 1940 WQ_MEM_RECLAIM, 0); 1941 if (!tcm_qla2xxx_free_wq) { 1942 ret = -ENOMEM; 1943 goto out_fabric_npiv; 1944 } 1945 1946 return 0; 1947 1948 out_fabric_npiv: 1949 target_unregister_template(&tcm_qla2xxx_npiv_ops); 1950 out_fabric: 1951 target_unregister_template(&tcm_qla2xxx_ops); 1952 return ret; 1953 } 1954 1955 static void tcm_qla2xxx_deregister_configfs(void) 1956 { 1957 destroy_workqueue(tcm_qla2xxx_free_wq); 1958 1959 target_unregister_template(&tcm_qla2xxx_ops); 1960 target_unregister_template(&tcm_qla2xxx_npiv_ops); 1961 } 1962 1963 static int __init tcm_qla2xxx_init(void) 1964 { 1965 int ret; 1966 1967 BUILD_BUG_ON(sizeof(struct abts_recv_from_24xx) != 64); 1968 BUILD_BUG_ON(sizeof(struct abts_resp_from_24xx_fw) != 64); 1969 BUILD_BUG_ON(sizeof(struct atio7_fcp_cmnd) != 32); 1970 BUILD_BUG_ON(sizeof(struct atio_from_isp) != 64); 1971 BUILD_BUG_ON(sizeof(struct ba_acc_le) != 12); 1972 BUILD_BUG_ON(sizeof(struct ba_rjt_le) != 4); 1973 BUILD_BUG_ON(sizeof(struct ctio7_from_24xx) != 64); 1974 BUILD_BUG_ON(sizeof(struct ctio7_to_24xx) != 64); 1975 BUILD_BUG_ON(sizeof(struct ctio_crc2_to_fw) != 64); 1976 BUILD_BUG_ON(sizeof(struct ctio_crc_from_fw) != 64); 1977 BUILD_BUG_ON(sizeof(struct ctio_to_2xxx) != 64); 1978 BUILD_BUG_ON(sizeof(struct fcp_hdr) != 24); 1979 BUILD_BUG_ON(sizeof(struct fcp_hdr_le) != 24); 1980 BUILD_BUG_ON(sizeof(struct nack_to_isp) != 64); 1981 1982 ret = tcm_qla2xxx_register_configfs(); 1983 if (ret < 0) 1984 return ret; 1985 1986 return 0; 1987 } 1988 1989 static void __exit tcm_qla2xxx_exit(void) 1990 { 1991 tcm_qla2xxx_deregister_configfs(); 1992 } 1993 1994 MODULE_DESCRIPTION("TCM QLA24XX+ series NPIV enabled fabric driver"); 1995 MODULE_LICENSE("GPL"); 1996 module_init(tcm_qla2xxx_init); 1997 module_exit(tcm_qla2xxx_exit); 1998