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); 258 259 cmd->cmd_in_wq = 0; 260 261 WARN_ON(cmd->trc_flags & TRC_CMD_FREE); 262 263 /* To do: protect all tgt_counters manipulations with proper locking. */ 264 cmd->qpair->tgt_counters.qla_core_ret_sta_ctio++; 265 cmd->trc_flags |= TRC_CMD_FREE; 266 cmd->cmd_sent_to_fw = 0; 267 268 transport_generic_free_cmd(&cmd->se_cmd, 0); 269 } 270 271 /* 272 * Called from qla_target_template->free_cmd(), and will call 273 * tcm_qla2xxx_release_cmd via normal struct target_core_fabric_ops 274 * release callback. qla_hw_data->hardware_lock is expected to be held 275 */ 276 static void tcm_qla2xxx_free_cmd(struct qla_tgt_cmd *cmd) 277 { 278 cmd->qpair->tgt_counters.core_qla_free_cmd++; 279 cmd->cmd_in_wq = 1; 280 281 WARN_ON(cmd->trc_flags & TRC_CMD_DONE); 282 cmd->trc_flags |= TRC_CMD_DONE; 283 284 INIT_WORK(&cmd->work, tcm_qla2xxx_complete_free); 285 queue_work_on(smp_processor_id(), tcm_qla2xxx_free_wq, &cmd->work); 286 } 287 288 /* 289 * Called from struct target_core_fabric_ops->check_stop_free() context 290 */ 291 static int tcm_qla2xxx_check_stop_free(struct se_cmd *se_cmd) 292 { 293 struct qla_tgt_cmd *cmd; 294 295 if ((se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) == 0) { 296 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd); 297 cmd->trc_flags |= TRC_CMD_CHK_STOP; 298 } 299 300 return target_put_sess_cmd(se_cmd); 301 } 302 303 /* tcm_qla2xxx_release_cmd - Callback from TCM Core to release underlying 304 * fabric descriptor @se_cmd command to release 305 */ 306 static void tcm_qla2xxx_release_cmd(struct se_cmd *se_cmd) 307 { 308 struct qla_tgt_cmd *cmd; 309 310 if (se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) { 311 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd, 312 struct qla_tgt_mgmt_cmd, se_cmd); 313 qlt_free_mcmd(mcmd); 314 return; 315 } 316 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd); 317 318 if (WARN_ON(cmd->cmd_sent_to_fw)) 319 return; 320 321 qlt_free_cmd(cmd); 322 } 323 324 static void tcm_qla2xxx_release_session(struct kref *kref) 325 { 326 struct fc_port *sess = container_of(kref, 327 struct fc_port, sess_kref); 328 329 qlt_unreg_sess(sess); 330 } 331 332 static void tcm_qla2xxx_put_sess(struct fc_port *sess) 333 { 334 if (!sess) 335 return; 336 337 kref_put(&sess->sess_kref, tcm_qla2xxx_release_session); 338 } 339 340 static void tcm_qla2xxx_close_session(struct se_session *se_sess) 341 { 342 struct fc_port *sess = se_sess->fabric_sess_ptr; 343 struct scsi_qla_host *vha; 344 unsigned long flags; 345 346 BUG_ON(!sess); 347 vha = sess->vha; 348 349 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 350 target_sess_cmd_list_set_waiting(se_sess); 351 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 352 353 sess->explicit_logout = 1; 354 tcm_qla2xxx_put_sess(sess); 355 } 356 357 static u32 tcm_qla2xxx_sess_get_index(struct se_session *se_sess) 358 { 359 return 0; 360 } 361 362 static int tcm_qla2xxx_write_pending(struct se_cmd *se_cmd) 363 { 364 struct qla_tgt_cmd *cmd = container_of(se_cmd, 365 struct qla_tgt_cmd, se_cmd); 366 367 if (cmd->aborted) { 368 /* Cmd can loop during Q-full. tcm_qla2xxx_aborted_task 369 * can get ahead of this cmd. tcm_qla2xxx_aborted_task 370 * already kick start the free. 371 */ 372 pr_debug("write_pending aborted cmd[%p] refcount %d " 373 "transport_state %x, t_state %x, se_cmd_flags %x\n", 374 cmd, kref_read(&cmd->se_cmd.cmd_kref), 375 cmd->se_cmd.transport_state, 376 cmd->se_cmd.t_state, 377 cmd->se_cmd.se_cmd_flags); 378 transport_generic_request_failure(&cmd->se_cmd, 379 TCM_CHECK_CONDITION_ABORT_CMD); 380 return 0; 381 } 382 cmd->trc_flags |= TRC_XFR_RDY; 383 cmd->bufflen = se_cmd->data_length; 384 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd); 385 386 cmd->sg_cnt = se_cmd->t_data_nents; 387 cmd->sg = se_cmd->t_data_sg; 388 389 cmd->prot_sg_cnt = se_cmd->t_prot_nents; 390 cmd->prot_sg = se_cmd->t_prot_sg; 391 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size; 392 se_cmd->pi_err = 0; 393 394 /* 395 * qla_target.c:qlt_rdy_to_xfer() will call dma_map_sg() to setup 396 * the SGL mappings into PCIe memory for incoming FCP WRITE data. 397 */ 398 return qlt_rdy_to_xfer(cmd); 399 } 400 401 static void tcm_qla2xxx_set_default_node_attrs(struct se_node_acl *nacl) 402 { 403 return; 404 } 405 406 static int tcm_qla2xxx_get_cmd_state(struct se_cmd *se_cmd) 407 { 408 if (!(se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB)) { 409 struct qla_tgt_cmd *cmd = container_of(se_cmd, 410 struct qla_tgt_cmd, se_cmd); 411 return cmd->state; 412 } 413 414 return 0; 415 } 416 417 /* 418 * Called from process context in qla_target.c:qlt_do_work() code 419 */ 420 static int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd, 421 unsigned char *cdb, uint32_t data_length, int fcp_task_attr, 422 int data_dir, int bidi) 423 { 424 struct se_cmd *se_cmd = &cmd->se_cmd; 425 struct se_session *se_sess; 426 struct fc_port *sess; 427 #ifdef CONFIG_TCM_QLA2XXX_DEBUG 428 struct se_portal_group *se_tpg; 429 struct tcm_qla2xxx_tpg *tpg; 430 #endif 431 int flags = TARGET_SCF_ACK_KREF; 432 433 if (bidi) 434 flags |= TARGET_SCF_BIDI_OP; 435 436 if (se_cmd->cpuid != WORK_CPU_UNBOUND) 437 flags |= TARGET_SCF_USE_CPUID; 438 439 sess = cmd->sess; 440 if (!sess) { 441 pr_err("Unable to locate struct fc_port from qla_tgt_cmd\n"); 442 return -EINVAL; 443 } 444 445 se_sess = sess->se_sess; 446 if (!se_sess) { 447 pr_err("Unable to locate active struct se_session\n"); 448 return -EINVAL; 449 } 450 451 #ifdef CONFIG_TCM_QLA2XXX_DEBUG 452 se_tpg = se_sess->se_tpg; 453 tpg = container_of(se_tpg, struct tcm_qla2xxx_tpg, se_tpg); 454 if (unlikely(tpg->tpg_attrib.jam_host)) { 455 /* return, and dont run target_submit_cmd,discarding command */ 456 return 0; 457 } 458 #endif 459 460 cmd->qpair->tgt_counters.qla_core_sbt_cmd++; 461 return target_submit_cmd(se_cmd, se_sess, cdb, &cmd->sense_buffer[0], 462 cmd->unpacked_lun, data_length, fcp_task_attr, 463 data_dir, flags); 464 } 465 466 static void tcm_qla2xxx_handle_data_work(struct work_struct *work) 467 { 468 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 469 470 /* 471 * Ensure that the complete FCP WRITE payload has been received. 472 * Otherwise return an exception via CHECK_CONDITION status. 473 */ 474 cmd->cmd_in_wq = 0; 475 cmd->cmd_sent_to_fw = 0; 476 if (cmd->aborted) { 477 transport_generic_request_failure(&cmd->se_cmd, 478 TCM_CHECK_CONDITION_ABORT_CMD); 479 return; 480 } 481 482 cmd->qpair->tgt_counters.qla_core_ret_ctio++; 483 if (!cmd->write_data_transferred) { 484 switch (cmd->dif_err_code) { 485 case DIF_ERR_GRD: 486 cmd->se_cmd.pi_err = 487 TCM_LOGICAL_BLOCK_GUARD_CHECK_FAILED; 488 break; 489 case DIF_ERR_REF: 490 cmd->se_cmd.pi_err = 491 TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED; 492 break; 493 case DIF_ERR_APP: 494 cmd->se_cmd.pi_err = 495 TCM_LOGICAL_BLOCK_APP_TAG_CHECK_FAILED; 496 break; 497 case DIF_ERR_NONE: 498 default: 499 break; 500 } 501 502 if (cmd->se_cmd.pi_err) 503 transport_generic_request_failure(&cmd->se_cmd, 504 cmd->se_cmd.pi_err); 505 else 506 transport_generic_request_failure(&cmd->se_cmd, 507 TCM_CHECK_CONDITION_ABORT_CMD); 508 509 return; 510 } 511 512 return target_execute_cmd(&cmd->se_cmd); 513 } 514 515 /* 516 * Called from qla_target.c:qlt_do_ctio_completion() 517 */ 518 static void tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd) 519 { 520 cmd->trc_flags |= TRC_DATA_IN; 521 cmd->cmd_in_wq = 1; 522 INIT_WORK(&cmd->work, tcm_qla2xxx_handle_data_work); 523 queue_work_on(smp_processor_id(), tcm_qla2xxx_free_wq, &cmd->work); 524 } 525 526 static int tcm_qla2xxx_chk_dif_tags(uint32_t tag) 527 { 528 return 0; 529 } 530 531 static int tcm_qla2xxx_dif_tags(struct qla_tgt_cmd *cmd, 532 uint16_t *pfw_prot_opts) 533 { 534 struct se_cmd *se_cmd = &cmd->se_cmd; 535 536 if (!(se_cmd->prot_checks & TARGET_DIF_CHECK_GUARD)) 537 *pfw_prot_opts |= PO_DISABLE_GUARD_CHECK; 538 539 if (!(se_cmd->prot_checks & TARGET_DIF_CHECK_APPTAG)) 540 *pfw_prot_opts |= PO_DIS_APP_TAG_VALD; 541 542 return 0; 543 } 544 545 /* 546 * Called from qla_target.c:qlt_issue_task_mgmt() 547 */ 548 static int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *mcmd, u64 lun, 549 uint16_t tmr_func, uint32_t tag) 550 { 551 struct fc_port *sess = mcmd->sess; 552 struct se_cmd *se_cmd = &mcmd->se_cmd; 553 int transl_tmr_func = 0; 554 int flags = TARGET_SCF_ACK_KREF; 555 556 switch (tmr_func) { 557 case QLA_TGT_ABTS: 558 pr_debug("%ld: ABTS received\n", sess->vha->host_no); 559 transl_tmr_func = TMR_ABORT_TASK; 560 flags |= TARGET_SCF_LOOKUP_LUN_FROM_TAG; 561 break; 562 case QLA_TGT_2G_ABORT_TASK: 563 pr_debug("%ld: 2G Abort Task received\n", sess->vha->host_no); 564 transl_tmr_func = TMR_ABORT_TASK; 565 break; 566 case QLA_TGT_CLEAR_ACA: 567 pr_debug("%ld: CLEAR_ACA received\n", sess->vha->host_no); 568 transl_tmr_func = TMR_CLEAR_ACA; 569 break; 570 case QLA_TGT_TARGET_RESET: 571 pr_debug("%ld: TARGET_RESET received\n", sess->vha->host_no); 572 transl_tmr_func = TMR_TARGET_WARM_RESET; 573 break; 574 case QLA_TGT_LUN_RESET: 575 pr_debug("%ld: LUN_RESET received\n", sess->vha->host_no); 576 transl_tmr_func = TMR_LUN_RESET; 577 break; 578 case QLA_TGT_CLEAR_TS: 579 pr_debug("%ld: CLEAR_TS received\n", sess->vha->host_no); 580 transl_tmr_func = TMR_CLEAR_TASK_SET; 581 break; 582 case QLA_TGT_ABORT_TS: 583 pr_debug("%ld: ABORT_TS received\n", sess->vha->host_no); 584 transl_tmr_func = TMR_ABORT_TASK_SET; 585 break; 586 default: 587 pr_debug("%ld: Unknown task mgmt fn 0x%x\n", 588 sess->vha->host_no, tmr_func); 589 return -ENOSYS; 590 } 591 592 return target_submit_tmr(se_cmd, sess->se_sess, NULL, lun, mcmd, 593 transl_tmr_func, GFP_ATOMIC, tag, flags); 594 } 595 596 static struct qla_tgt_cmd *tcm_qla2xxx_find_cmd_by_tag(struct fc_port *sess, 597 uint64_t tag) 598 { 599 struct qla_tgt_cmd *cmd = NULL; 600 struct se_cmd *secmd; 601 unsigned long flags; 602 603 if (!sess->se_sess) 604 return NULL; 605 606 spin_lock_irqsave(&sess->se_sess->sess_cmd_lock, flags); 607 list_for_each_entry(secmd, &sess->se_sess->sess_cmd_list, se_cmd_list) { 608 /* skip task management functions, including tmr->task_cmd */ 609 if (secmd->se_cmd_flags & SCF_SCSI_TMR_CDB) 610 continue; 611 612 if (secmd->tag == tag) { 613 cmd = container_of(secmd, struct qla_tgt_cmd, se_cmd); 614 break; 615 } 616 } 617 spin_unlock_irqrestore(&sess->se_sess->sess_cmd_lock, flags); 618 619 return cmd; 620 } 621 622 static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd) 623 { 624 struct qla_tgt_cmd *cmd = container_of(se_cmd, 625 struct qla_tgt_cmd, se_cmd); 626 struct scsi_qla_host *vha = cmd->vha; 627 628 if (cmd->aborted) { 629 /* Cmd can loop during Q-full. tcm_qla2xxx_aborted_task 630 * can get ahead of this cmd. tcm_qla2xxx_aborted_task 631 * already kick start the free. 632 */ 633 pr_debug("queue_data_in aborted cmd[%p] refcount %d " 634 "transport_state %x, t_state %x, se_cmd_flags %x\n", 635 cmd, kref_read(&cmd->se_cmd.cmd_kref), 636 cmd->se_cmd.transport_state, 637 cmd->se_cmd.t_state, 638 cmd->se_cmd.se_cmd_flags); 639 vha->hw->tgt.tgt_ops->free_cmd(cmd); 640 return 0; 641 } 642 643 cmd->trc_flags |= TRC_XMIT_DATA; 644 cmd->bufflen = se_cmd->data_length; 645 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd); 646 647 cmd->sg_cnt = se_cmd->t_data_nents; 648 cmd->sg = se_cmd->t_data_sg; 649 cmd->offset = 0; 650 651 cmd->prot_sg_cnt = se_cmd->t_prot_nents; 652 cmd->prot_sg = se_cmd->t_prot_sg; 653 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size; 654 se_cmd->pi_err = 0; 655 656 /* 657 * Now queue completed DATA_IN the qla2xxx LLD and response ring 658 */ 659 return qlt_xmit_response(cmd, QLA_TGT_XMIT_DATA|QLA_TGT_XMIT_STATUS, 660 se_cmd->scsi_status); 661 } 662 663 static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd) 664 { 665 struct qla_tgt_cmd *cmd = container_of(se_cmd, 666 struct qla_tgt_cmd, se_cmd); 667 struct scsi_qla_host *vha = cmd->vha; 668 int xmit_type = QLA_TGT_XMIT_STATUS; 669 670 if (cmd->aborted) { 671 /* 672 * Cmd can loop during Q-full. tcm_qla2xxx_aborted_task 673 * can get ahead of this cmd. tcm_qla2xxx_aborted_task 674 * already kick start the free. 675 */ 676 pr_debug( 677 "queue_data_in aborted cmd[%p] refcount %d transport_state %x, t_state %x, se_cmd_flags %x\n", 678 cmd, kref_read(&cmd->se_cmd.cmd_kref), 679 cmd->se_cmd.transport_state, cmd->se_cmd.t_state, 680 cmd->se_cmd.se_cmd_flags); 681 vha->hw->tgt.tgt_ops->free_cmd(cmd); 682 return 0; 683 } 684 cmd->bufflen = se_cmd->data_length; 685 cmd->sg = NULL; 686 cmd->sg_cnt = 0; 687 cmd->offset = 0; 688 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd); 689 cmd->trc_flags |= TRC_XMIT_STATUS; 690 691 if (se_cmd->data_direction == DMA_FROM_DEVICE) { 692 /* 693 * For FCP_READ with CHECK_CONDITION status, clear cmd->bufflen 694 * for qla_tgt_xmit_response LLD code 695 */ 696 if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) { 697 se_cmd->se_cmd_flags &= ~SCF_OVERFLOW_BIT; 698 se_cmd->residual_count = 0; 699 } 700 se_cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT; 701 se_cmd->residual_count += se_cmd->data_length; 702 703 cmd->bufflen = 0; 704 } 705 /* 706 * Now queue status response to qla2xxx LLD code and response ring 707 */ 708 return qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status); 709 } 710 711 static void tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd) 712 { 713 struct se_tmr_req *se_tmr = se_cmd->se_tmr_req; 714 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd, 715 struct qla_tgt_mgmt_cmd, se_cmd); 716 717 pr_debug("queue_tm_rsp: mcmd: %p func: 0x%02x response: 0x%02x\n", 718 mcmd, se_tmr->function, se_tmr->response); 719 /* 720 * Do translation between TCM TM response codes and 721 * QLA2xxx FC TM response codes. 722 */ 723 switch (se_tmr->response) { 724 case TMR_FUNCTION_COMPLETE: 725 mcmd->fc_tm_rsp = FC_TM_SUCCESS; 726 break; 727 case TMR_TASK_DOES_NOT_EXIST: 728 mcmd->fc_tm_rsp = FC_TM_BAD_CMD; 729 break; 730 case TMR_FUNCTION_REJECTED: 731 mcmd->fc_tm_rsp = FC_TM_REJECT; 732 break; 733 case TMR_LUN_DOES_NOT_EXIST: 734 default: 735 mcmd->fc_tm_rsp = FC_TM_FAILED; 736 break; 737 } 738 /* 739 * Queue the TM response to QLA2xxx LLD to build a 740 * CTIO response packet. 741 */ 742 qlt_xmit_tm_rsp(mcmd); 743 } 744 745 static void tcm_qla2xxx_aborted_task(struct se_cmd *se_cmd) 746 { 747 struct qla_tgt_cmd *cmd = container_of(se_cmd, 748 struct qla_tgt_cmd, se_cmd); 749 750 if (qlt_abort_cmd(cmd)) 751 return; 752 } 753 754 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *, 755 struct tcm_qla2xxx_nacl *, struct fc_port *); 756 /* 757 * Expected to be called with struct qla_hw_data->tgt.sess_lock held 758 */ 759 static void tcm_qla2xxx_clear_nacl_from_fcport_map(struct fc_port *sess) 760 { 761 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl; 762 struct se_portal_group *se_tpg = se_nacl->se_tpg; 763 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn; 764 struct tcm_qla2xxx_lport *lport = container_of(se_wwn, 765 struct tcm_qla2xxx_lport, lport_wwn); 766 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl, 767 struct tcm_qla2xxx_nacl, se_node_acl); 768 void *node; 769 770 pr_debug("fc_rport domain: port_id 0x%06x\n", nacl->nport_id); 771 772 node = btree_remove32(&lport->lport_fcport_map, nacl->nport_id); 773 if (WARN_ON(node && (node != se_nacl))) { 774 /* 775 * The nacl no longer matches what we think it should be. 776 * Most likely a new dynamic acl has been added while 777 * someone dropped the hardware lock. It clearly is a 778 * bug elsewhere, but this bit can't make things worse. 779 */ 780 btree_insert32(&lport->lport_fcport_map, nacl->nport_id, 781 node, GFP_ATOMIC); 782 } 783 784 pr_debug("Removed from fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%06x\n", 785 se_nacl, nacl->nport_wwnn, nacl->nport_id); 786 /* 787 * Now clear the se_nacl and session pointers from our HW lport lookup 788 * table mapping for this initiator's fabric S_ID and LOOP_ID entries. 789 * 790 * This is done ahead of callbacks into tcm_qla2xxx_free_session() -> 791 * target_wait_for_sess_cmds() before the session waits for outstanding 792 * I/O to complete, to avoid a race between session shutdown execution 793 * and incoming ATIOs or TMRs picking up a stale se_node_act reference. 794 */ 795 tcm_qla2xxx_clear_sess_lookup(lport, nacl, sess); 796 } 797 798 static void tcm_qla2xxx_shutdown_sess(struct fc_port *sess) 799 { 800 target_sess_cmd_list_set_waiting(sess->se_sess); 801 } 802 803 static int tcm_qla2xxx_init_nodeacl(struct se_node_acl *se_nacl, 804 const char *name) 805 { 806 struct tcm_qla2xxx_nacl *nacl = 807 container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 808 u64 wwnn; 809 810 if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0) 811 return -EINVAL; 812 813 nacl->nport_wwnn = wwnn; 814 tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn); 815 816 return 0; 817 } 818 819 /* Start items for tcm_qla2xxx_tpg_attrib_cit */ 820 821 #define DEF_QLA_TPG_ATTRIB(name) \ 822 \ 823 static ssize_t tcm_qla2xxx_tpg_attrib_##name##_show( \ 824 struct config_item *item, char *page) \ 825 { \ 826 struct se_portal_group *se_tpg = attrib_to_tpg(item); \ 827 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \ 828 struct tcm_qla2xxx_tpg, se_tpg); \ 829 \ 830 return sprintf(page, "%u\n", tpg->tpg_attrib.name); \ 831 } \ 832 \ 833 static ssize_t tcm_qla2xxx_tpg_attrib_##name##_store( \ 834 struct config_item *item, const char *page, size_t count) \ 835 { \ 836 struct se_portal_group *se_tpg = attrib_to_tpg(item); \ 837 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \ 838 struct tcm_qla2xxx_tpg, se_tpg); \ 839 struct tcm_qla2xxx_tpg_attrib *a = &tpg->tpg_attrib; \ 840 unsigned long val; \ 841 int ret; \ 842 \ 843 ret = kstrtoul(page, 0, &val); \ 844 if (ret < 0) { \ 845 pr_err("kstrtoul() failed with" \ 846 " ret: %d\n", ret); \ 847 return -EINVAL; \ 848 } \ 849 \ 850 if ((val != 0) && (val != 1)) { \ 851 pr_err("Illegal boolean value %lu\n", val); \ 852 return -EINVAL; \ 853 } \ 854 \ 855 a->name = val; \ 856 \ 857 return count; \ 858 } \ 859 CONFIGFS_ATTR(tcm_qla2xxx_tpg_attrib_, name) 860 861 DEF_QLA_TPG_ATTRIB(generate_node_acls); 862 DEF_QLA_TPG_ATTRIB(cache_dynamic_acls); 863 DEF_QLA_TPG_ATTRIB(demo_mode_write_protect); 864 DEF_QLA_TPG_ATTRIB(prod_mode_write_protect); 865 DEF_QLA_TPG_ATTRIB(demo_mode_login_only); 866 #ifdef CONFIG_TCM_QLA2XXX_DEBUG 867 DEF_QLA_TPG_ATTRIB(jam_host); 868 #endif 869 870 static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = { 871 &tcm_qla2xxx_tpg_attrib_attr_generate_node_acls, 872 &tcm_qla2xxx_tpg_attrib_attr_cache_dynamic_acls, 873 &tcm_qla2xxx_tpg_attrib_attr_demo_mode_write_protect, 874 &tcm_qla2xxx_tpg_attrib_attr_prod_mode_write_protect, 875 &tcm_qla2xxx_tpg_attrib_attr_demo_mode_login_only, 876 #ifdef CONFIG_TCM_QLA2XXX_DEBUG 877 &tcm_qla2xxx_tpg_attrib_attr_jam_host, 878 #endif 879 NULL, 880 }; 881 882 /* End items for tcm_qla2xxx_tpg_attrib_cit */ 883 884 static ssize_t tcm_qla2xxx_tpg_enable_show(struct config_item *item, 885 char *page) 886 { 887 struct se_portal_group *se_tpg = to_tpg(item); 888 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 889 struct tcm_qla2xxx_tpg, se_tpg); 890 891 return snprintf(page, PAGE_SIZE, "%d\n", 892 atomic_read(&tpg->lport_tpg_enabled)); 893 } 894 895 static ssize_t tcm_qla2xxx_tpg_enable_store(struct config_item *item, 896 const char *page, size_t count) 897 { 898 struct se_portal_group *se_tpg = to_tpg(item); 899 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn; 900 struct tcm_qla2xxx_lport *lport = container_of(se_wwn, 901 struct tcm_qla2xxx_lport, lport_wwn); 902 struct scsi_qla_host *vha = lport->qla_vha; 903 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 904 struct tcm_qla2xxx_tpg, se_tpg); 905 unsigned long op; 906 int rc; 907 908 rc = kstrtoul(page, 0, &op); 909 if (rc < 0) { 910 pr_err("kstrtoul() returned %d\n", rc); 911 return -EINVAL; 912 } 913 if ((op != 1) && (op != 0)) { 914 pr_err("Illegal value for tpg_enable: %lu\n", op); 915 return -EINVAL; 916 } 917 if (op) { 918 if (atomic_read(&tpg->lport_tpg_enabled)) 919 return -EEXIST; 920 921 atomic_set(&tpg->lport_tpg_enabled, 1); 922 qlt_enable_vha(vha); 923 } else { 924 if (!atomic_read(&tpg->lport_tpg_enabled)) 925 return count; 926 927 atomic_set(&tpg->lport_tpg_enabled, 0); 928 qlt_stop_phase1(vha->vha_tgt.qla_tgt); 929 } 930 931 return count; 932 } 933 934 static ssize_t tcm_qla2xxx_tpg_dynamic_sessions_show(struct config_item *item, 935 char *page) 936 { 937 return target_show_dynamic_sessions(to_tpg(item), page); 938 } 939 940 static ssize_t tcm_qla2xxx_tpg_fabric_prot_type_store(struct config_item *item, 941 const char *page, size_t count) 942 { 943 struct se_portal_group *se_tpg = to_tpg(item); 944 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 945 struct tcm_qla2xxx_tpg, se_tpg); 946 unsigned long val; 947 int ret = kstrtoul(page, 0, &val); 948 949 if (ret) { 950 pr_err("kstrtoul() returned %d for fabric_prot_type\n", ret); 951 return ret; 952 } 953 if (val != 0 && val != 1 && val != 3) { 954 pr_err("Invalid qla2xxx fabric_prot_type: %lu\n", val); 955 return -EINVAL; 956 } 957 tpg->tpg_attrib.fabric_prot_type = val; 958 959 return count; 960 } 961 962 static ssize_t tcm_qla2xxx_tpg_fabric_prot_type_show(struct config_item *item, 963 char *page) 964 { 965 struct se_portal_group *se_tpg = to_tpg(item); 966 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 967 struct tcm_qla2xxx_tpg, se_tpg); 968 969 return sprintf(page, "%d\n", tpg->tpg_attrib.fabric_prot_type); 970 } 971 972 CONFIGFS_ATTR(tcm_qla2xxx_tpg_, enable); 973 CONFIGFS_ATTR_RO(tcm_qla2xxx_tpg_, dynamic_sessions); 974 CONFIGFS_ATTR(tcm_qla2xxx_tpg_, fabric_prot_type); 975 976 static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = { 977 &tcm_qla2xxx_tpg_attr_enable, 978 &tcm_qla2xxx_tpg_attr_dynamic_sessions, 979 &tcm_qla2xxx_tpg_attr_fabric_prot_type, 980 NULL, 981 }; 982 983 static struct se_portal_group *tcm_qla2xxx_make_tpg(struct se_wwn *wwn, 984 const char *name) 985 { 986 struct tcm_qla2xxx_lport *lport = container_of(wwn, 987 struct tcm_qla2xxx_lport, lport_wwn); 988 struct tcm_qla2xxx_tpg *tpg; 989 unsigned long tpgt; 990 int ret; 991 992 if (strstr(name, "tpgt_") != name) 993 return ERR_PTR(-EINVAL); 994 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX) 995 return ERR_PTR(-EINVAL); 996 997 if ((tpgt != 1)) { 998 pr_err("In non NPIV mode, a single TPG=1 is used for HW port mappings\n"); 999 return ERR_PTR(-ENOSYS); 1000 } 1001 1002 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL); 1003 if (!tpg) { 1004 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n"); 1005 return ERR_PTR(-ENOMEM); 1006 } 1007 tpg->lport = lport; 1008 tpg->lport_tpgt = tpgt; 1009 /* 1010 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic 1011 * NodeACLs 1012 */ 1013 tpg->tpg_attrib.generate_node_acls = 1; 1014 tpg->tpg_attrib.demo_mode_write_protect = 1; 1015 tpg->tpg_attrib.cache_dynamic_acls = 1; 1016 tpg->tpg_attrib.demo_mode_login_only = 1; 1017 tpg->tpg_attrib.jam_host = 0; 1018 1019 ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP); 1020 if (ret < 0) { 1021 kfree(tpg); 1022 return NULL; 1023 } 1024 1025 lport->tpg_1 = tpg; 1026 1027 return &tpg->se_tpg; 1028 } 1029 1030 static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg) 1031 { 1032 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1033 struct tcm_qla2xxx_tpg, se_tpg); 1034 struct tcm_qla2xxx_lport *lport = tpg->lport; 1035 struct scsi_qla_host *vha = lport->qla_vha; 1036 /* 1037 * Call into qla2x_target.c LLD logic to shutdown the active 1038 * FC Nexuses and disable target mode operation for this qla_hw_data 1039 */ 1040 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stop) 1041 qlt_stop_phase1(vha->vha_tgt.qla_tgt); 1042 1043 core_tpg_deregister(se_tpg); 1044 /* 1045 * Clear local TPG=1 pointer for non NPIV mode. 1046 */ 1047 lport->tpg_1 = NULL; 1048 kfree(tpg); 1049 } 1050 1051 static ssize_t tcm_qla2xxx_npiv_tpg_enable_show(struct config_item *item, 1052 char *page) 1053 { 1054 return tcm_qla2xxx_tpg_enable_show(item, page); 1055 } 1056 1057 static ssize_t tcm_qla2xxx_npiv_tpg_enable_store(struct config_item *item, 1058 const char *page, size_t count) 1059 { 1060 struct se_portal_group *se_tpg = to_tpg(item); 1061 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn; 1062 struct tcm_qla2xxx_lport *lport = container_of(se_wwn, 1063 struct tcm_qla2xxx_lport, lport_wwn); 1064 struct scsi_qla_host *vha = lport->qla_vha; 1065 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1066 struct tcm_qla2xxx_tpg, se_tpg); 1067 unsigned long op; 1068 int rc; 1069 1070 rc = kstrtoul(page, 0, &op); 1071 if (rc < 0) { 1072 pr_err("kstrtoul() returned %d\n", rc); 1073 return -EINVAL; 1074 } 1075 if ((op != 1) && (op != 0)) { 1076 pr_err("Illegal value for tpg_enable: %lu\n", op); 1077 return -EINVAL; 1078 } 1079 if (op) { 1080 if (atomic_read(&tpg->lport_tpg_enabled)) 1081 return -EEXIST; 1082 1083 atomic_set(&tpg->lport_tpg_enabled, 1); 1084 qlt_enable_vha(vha); 1085 } else { 1086 if (!atomic_read(&tpg->lport_tpg_enabled)) 1087 return count; 1088 1089 atomic_set(&tpg->lport_tpg_enabled, 0); 1090 qlt_stop_phase1(vha->vha_tgt.qla_tgt); 1091 } 1092 1093 return count; 1094 } 1095 1096 CONFIGFS_ATTR(tcm_qla2xxx_npiv_tpg_, enable); 1097 1098 static struct configfs_attribute *tcm_qla2xxx_npiv_tpg_attrs[] = { 1099 &tcm_qla2xxx_npiv_tpg_attr_enable, 1100 NULL, 1101 }; 1102 1103 static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg(struct se_wwn *wwn, 1104 const char *name) 1105 { 1106 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1107 struct tcm_qla2xxx_lport, lport_wwn); 1108 struct tcm_qla2xxx_tpg *tpg; 1109 unsigned long tpgt; 1110 int ret; 1111 1112 if (strstr(name, "tpgt_") != name) 1113 return ERR_PTR(-EINVAL); 1114 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX) 1115 return ERR_PTR(-EINVAL); 1116 1117 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL); 1118 if (!tpg) { 1119 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n"); 1120 return ERR_PTR(-ENOMEM); 1121 } 1122 tpg->lport = lport; 1123 tpg->lport_tpgt = tpgt; 1124 1125 /* 1126 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic 1127 * NodeACLs 1128 */ 1129 tpg->tpg_attrib.generate_node_acls = 1; 1130 tpg->tpg_attrib.demo_mode_write_protect = 1; 1131 tpg->tpg_attrib.cache_dynamic_acls = 1; 1132 tpg->tpg_attrib.demo_mode_login_only = 1; 1133 1134 ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP); 1135 if (ret < 0) { 1136 kfree(tpg); 1137 return NULL; 1138 } 1139 lport->tpg_1 = tpg; 1140 return &tpg->se_tpg; 1141 } 1142 1143 /* 1144 * Expected to be called with struct qla_hw_data->tgt.sess_lock held 1145 */ 1146 static struct fc_port *tcm_qla2xxx_find_sess_by_s_id(scsi_qla_host_t *vha, 1147 const be_id_t s_id) 1148 { 1149 struct tcm_qla2xxx_lport *lport; 1150 struct se_node_acl *se_nacl; 1151 struct tcm_qla2xxx_nacl *nacl; 1152 u32 key; 1153 1154 lport = vha->vha_tgt.target_lport_ptr; 1155 if (!lport) { 1156 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1157 dump_stack(); 1158 return NULL; 1159 } 1160 1161 key = sid_to_key(s_id); 1162 pr_debug("find_sess_by_s_id: 0x%06x\n", key); 1163 1164 se_nacl = btree_lookup32(&lport->lport_fcport_map, key); 1165 if (!se_nacl) { 1166 pr_debug("Unable to locate s_id: 0x%06x\n", key); 1167 return NULL; 1168 } 1169 pr_debug("find_sess_by_s_id: located se_nacl: %p, initiatorname: %s\n", 1170 se_nacl, se_nacl->initiatorname); 1171 1172 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1173 if (!nacl->fc_port) { 1174 pr_err("Unable to locate struct fc_port\n"); 1175 return NULL; 1176 } 1177 1178 return nacl->fc_port; 1179 } 1180 1181 /* 1182 * Expected to be called with struct qla_hw_data->tgt.sess_lock held 1183 */ 1184 static void tcm_qla2xxx_set_sess_by_s_id( 1185 struct tcm_qla2xxx_lport *lport, 1186 struct se_node_acl *new_se_nacl, 1187 struct tcm_qla2xxx_nacl *nacl, 1188 struct se_session *se_sess, 1189 struct fc_port *fc_port, 1190 be_id_t s_id) 1191 { 1192 u32 key; 1193 void *slot; 1194 int rc; 1195 1196 key = sid_to_key(s_id); 1197 pr_debug("set_sess_by_s_id: %06x\n", key); 1198 1199 slot = btree_lookup32(&lport->lport_fcport_map, key); 1200 if (!slot) { 1201 if (new_se_nacl) { 1202 pr_debug("Setting up new fc_port entry to new_se_nacl\n"); 1203 nacl->nport_id = key; 1204 rc = btree_insert32(&lport->lport_fcport_map, key, 1205 new_se_nacl, GFP_ATOMIC); 1206 if (rc) 1207 printk(KERN_ERR "Unable to insert s_id into fcport_map: %06x\n", 1208 (int)key); 1209 } else { 1210 pr_debug("Wiping nonexisting fc_port entry\n"); 1211 } 1212 1213 fc_port->se_sess = se_sess; 1214 nacl->fc_port = fc_port; 1215 return; 1216 } 1217 1218 if (nacl->fc_port) { 1219 if (new_se_nacl == NULL) { 1220 pr_debug("Clearing existing nacl->fc_port and fc_port entry\n"); 1221 btree_remove32(&lport->lport_fcport_map, key); 1222 nacl->fc_port = NULL; 1223 return; 1224 } 1225 pr_debug("Replacing existing nacl->fc_port and fc_port entry\n"); 1226 btree_update32(&lport->lport_fcport_map, key, new_se_nacl); 1227 fc_port->se_sess = se_sess; 1228 nacl->fc_port = fc_port; 1229 return; 1230 } 1231 1232 if (new_se_nacl == NULL) { 1233 pr_debug("Clearing existing fc_port entry\n"); 1234 btree_remove32(&lport->lport_fcport_map, key); 1235 return; 1236 } 1237 1238 pr_debug("Replacing existing fc_port entry w/o active nacl->fc_port\n"); 1239 btree_update32(&lport->lport_fcport_map, key, new_se_nacl); 1240 fc_port->se_sess = se_sess; 1241 nacl->fc_port = fc_port; 1242 1243 pr_debug("Setup nacl->fc_port %p by s_id for se_nacl: %p, initiatorname: %s\n", 1244 nacl->fc_port, new_se_nacl, new_se_nacl->initiatorname); 1245 } 1246 1247 /* 1248 * Expected to be called with struct qla_hw_data->tgt.sess_lock held 1249 */ 1250 static struct fc_port *tcm_qla2xxx_find_sess_by_loop_id( 1251 scsi_qla_host_t *vha, 1252 const uint16_t loop_id) 1253 { 1254 struct tcm_qla2xxx_lport *lport; 1255 struct se_node_acl *se_nacl; 1256 struct tcm_qla2xxx_nacl *nacl; 1257 struct tcm_qla2xxx_fc_loopid *fc_loopid; 1258 1259 lport = vha->vha_tgt.target_lport_ptr; 1260 if (!lport) { 1261 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1262 dump_stack(); 1263 return NULL; 1264 } 1265 1266 pr_debug("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id); 1267 1268 fc_loopid = lport->lport_loopid_map + loop_id; 1269 se_nacl = fc_loopid->se_nacl; 1270 if (!se_nacl) { 1271 pr_debug("Unable to locate se_nacl by loop_id: 0x%04x\n", 1272 loop_id); 1273 return NULL; 1274 } 1275 1276 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1277 1278 if (!nacl->fc_port) { 1279 pr_err("Unable to locate struct fc_port\n"); 1280 return NULL; 1281 } 1282 1283 return nacl->fc_port; 1284 } 1285 1286 /* 1287 * Expected to be called with struct qla_hw_data->tgt.sess_lock held 1288 */ 1289 static void tcm_qla2xxx_set_sess_by_loop_id( 1290 struct tcm_qla2xxx_lport *lport, 1291 struct se_node_acl *new_se_nacl, 1292 struct tcm_qla2xxx_nacl *nacl, 1293 struct se_session *se_sess, 1294 struct fc_port *fc_port, 1295 uint16_t loop_id) 1296 { 1297 struct se_node_acl *saved_nacl; 1298 struct tcm_qla2xxx_fc_loopid *fc_loopid; 1299 1300 pr_debug("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id); 1301 1302 fc_loopid = &((struct tcm_qla2xxx_fc_loopid *) 1303 lport->lport_loopid_map)[loop_id]; 1304 1305 saved_nacl = fc_loopid->se_nacl; 1306 if (!saved_nacl) { 1307 pr_debug("Setting up new fc_loopid->se_nacl to new_se_nacl\n"); 1308 fc_loopid->se_nacl = new_se_nacl; 1309 if (fc_port->se_sess != se_sess) 1310 fc_port->se_sess = se_sess; 1311 if (nacl->fc_port != fc_port) 1312 nacl->fc_port = fc_port; 1313 return; 1314 } 1315 1316 if (nacl->fc_port) { 1317 if (new_se_nacl == NULL) { 1318 pr_debug("Clearing nacl->fc_port and fc_loopid->se_nacl\n"); 1319 fc_loopid->se_nacl = NULL; 1320 nacl->fc_port = NULL; 1321 return; 1322 } 1323 1324 pr_debug("Replacing existing nacl->fc_port and fc_loopid->se_nacl\n"); 1325 fc_loopid->se_nacl = new_se_nacl; 1326 if (fc_port->se_sess != se_sess) 1327 fc_port->se_sess = se_sess; 1328 if (nacl->fc_port != fc_port) 1329 nacl->fc_port = fc_port; 1330 return; 1331 } 1332 1333 if (new_se_nacl == NULL) { 1334 pr_debug("Clearing fc_loopid->se_nacl\n"); 1335 fc_loopid->se_nacl = NULL; 1336 return; 1337 } 1338 1339 pr_debug("Replacing existing fc_loopid->se_nacl w/o active nacl->fc_port\n"); 1340 fc_loopid->se_nacl = new_se_nacl; 1341 if (fc_port->se_sess != se_sess) 1342 fc_port->se_sess = se_sess; 1343 if (nacl->fc_port != fc_port) 1344 nacl->fc_port = fc_port; 1345 1346 pr_debug("Setup nacl->fc_port %p by loop_id for se_nacl: %p, initiatorname: %s\n", 1347 nacl->fc_port, new_se_nacl, new_se_nacl->initiatorname); 1348 } 1349 1350 /* 1351 * Should always be called with qla_hw_data->tgt.sess_lock held. 1352 */ 1353 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *lport, 1354 struct tcm_qla2xxx_nacl *nacl, struct fc_port *sess) 1355 { 1356 struct se_session *se_sess = sess->se_sess; 1357 1358 tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess, 1359 sess, port_id_to_be_id(sess->d_id)); 1360 tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess, 1361 sess, sess->loop_id); 1362 } 1363 1364 static void tcm_qla2xxx_free_session(struct fc_port *sess) 1365 { 1366 struct qla_tgt *tgt = sess->tgt; 1367 struct qla_hw_data *ha = tgt->ha; 1368 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev); 1369 struct se_session *se_sess; 1370 struct tcm_qla2xxx_lport *lport; 1371 1372 BUG_ON(in_interrupt()); 1373 1374 se_sess = sess->se_sess; 1375 if (!se_sess) { 1376 pr_err("struct fc_port->se_sess is NULL\n"); 1377 dump_stack(); 1378 return; 1379 } 1380 1381 lport = vha->vha_tgt.target_lport_ptr; 1382 if (!lport) { 1383 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1384 dump_stack(); 1385 return; 1386 } 1387 target_wait_for_sess_cmds(se_sess); 1388 1389 target_remove_session(se_sess); 1390 } 1391 1392 static int tcm_qla2xxx_session_cb(struct se_portal_group *se_tpg, 1393 struct se_session *se_sess, void *p) 1394 { 1395 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1396 struct tcm_qla2xxx_tpg, se_tpg); 1397 struct tcm_qla2xxx_lport *lport = tpg->lport; 1398 struct qla_hw_data *ha = lport->qla_vha->hw; 1399 struct se_node_acl *se_nacl = se_sess->se_node_acl; 1400 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl, 1401 struct tcm_qla2xxx_nacl, se_node_acl); 1402 struct fc_port *qlat_sess = p; 1403 uint16_t loop_id = qlat_sess->loop_id; 1404 unsigned long flags; 1405 1406 /* 1407 * And now setup se_nacl and session pointers into HW lport internal 1408 * mappings for fabric S_ID and LOOP_ID. 1409 */ 1410 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1411 tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl, se_sess, qlat_sess, 1412 port_id_to_be_id(qlat_sess->d_id)); 1413 tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl, 1414 se_sess, qlat_sess, loop_id); 1415 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1416 1417 return 0; 1418 } 1419 1420 /* 1421 * Called via qlt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl() 1422 * to locate struct se_node_acl 1423 */ 1424 static int tcm_qla2xxx_check_initiator_node_acl( 1425 scsi_qla_host_t *vha, 1426 unsigned char *fc_wwpn, 1427 struct fc_port *qlat_sess) 1428 { 1429 struct qla_hw_data *ha = vha->hw; 1430 struct tcm_qla2xxx_lport *lport; 1431 struct tcm_qla2xxx_tpg *tpg; 1432 struct se_session *se_sess; 1433 unsigned char port_name[36]; 1434 int num_tags = (ha->cur_fw_xcb_count) ? ha->cur_fw_xcb_count : 1435 TCM_QLA2XXX_DEFAULT_TAGS; 1436 1437 lport = vha->vha_tgt.target_lport_ptr; 1438 if (!lport) { 1439 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1440 dump_stack(); 1441 return -EINVAL; 1442 } 1443 /* 1444 * Locate the TPG=1 reference.. 1445 */ 1446 tpg = lport->tpg_1; 1447 if (!tpg) { 1448 pr_err("Unable to locate struct tcm_qla2xxx_lport->tpg_1\n"); 1449 return -EINVAL; 1450 } 1451 /* 1452 * Format the FCP Initiator port_name into colon seperated values to 1453 * match the format by tcm_qla2xxx explict ConfigFS NodeACLs. 1454 */ 1455 memset(&port_name, 0, 36); 1456 snprintf(port_name, sizeof(port_name), "%8phC", fc_wwpn); 1457 /* 1458 * Locate our struct se_node_acl either from an explict NodeACL created 1459 * via ConfigFS, or via running in TPG demo mode. 1460 */ 1461 se_sess = target_setup_session(&tpg->se_tpg, num_tags, 1462 sizeof(struct qla_tgt_cmd), 1463 TARGET_PROT_ALL, port_name, 1464 qlat_sess, tcm_qla2xxx_session_cb); 1465 if (IS_ERR(se_sess)) 1466 return PTR_ERR(se_sess); 1467 1468 return 0; 1469 } 1470 1471 static void tcm_qla2xxx_update_sess(struct fc_port *sess, port_id_t s_id, 1472 uint16_t loop_id, bool conf_compl_supported) 1473 { 1474 struct qla_tgt *tgt = sess->tgt; 1475 struct qla_hw_data *ha = tgt->ha; 1476 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev); 1477 struct tcm_qla2xxx_lport *lport = vha->vha_tgt.target_lport_ptr; 1478 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl; 1479 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl, 1480 struct tcm_qla2xxx_nacl, se_node_acl); 1481 u32 key; 1482 1483 1484 if (sess->loop_id != loop_id || sess->d_id.b24 != s_id.b24) 1485 pr_info("Updating session %p from port %8phC loop_id %d -> %d s_id %x:%x:%x -> %x:%x:%x\n", 1486 sess, sess->port_name, 1487 sess->loop_id, loop_id, sess->d_id.b.domain, 1488 sess->d_id.b.area, sess->d_id.b.al_pa, s_id.b.domain, 1489 s_id.b.area, s_id.b.al_pa); 1490 1491 if (sess->loop_id != loop_id) { 1492 /* 1493 * Because we can shuffle loop IDs around and we 1494 * update different sessions non-atomically, we might 1495 * have overwritten this session's old loop ID 1496 * already, and we might end up overwriting some other 1497 * session that will be updated later. So we have to 1498 * be extra careful and we can't warn about those things... 1499 */ 1500 if (lport->lport_loopid_map[sess->loop_id].se_nacl == se_nacl) 1501 lport->lport_loopid_map[sess->loop_id].se_nacl = NULL; 1502 1503 lport->lport_loopid_map[loop_id].se_nacl = se_nacl; 1504 1505 sess->loop_id = loop_id; 1506 } 1507 1508 if (sess->d_id.b24 != s_id.b24) { 1509 key = (((u32) sess->d_id.b.domain << 16) | 1510 ((u32) sess->d_id.b.area << 8) | 1511 ((u32) sess->d_id.b.al_pa)); 1512 1513 if (btree_lookup32(&lport->lport_fcport_map, key)) 1514 WARN(btree_remove32(&lport->lport_fcport_map, key) != 1515 se_nacl, "Found wrong se_nacl when updating s_id %x:%x:%x\n", 1516 sess->d_id.b.domain, sess->d_id.b.area, 1517 sess->d_id.b.al_pa); 1518 else 1519 WARN(1, "No lport_fcport_map entry for s_id %x:%x:%x\n", 1520 sess->d_id.b.domain, sess->d_id.b.area, 1521 sess->d_id.b.al_pa); 1522 1523 key = (((u32) s_id.b.domain << 16) | 1524 ((u32) s_id.b.area << 8) | 1525 ((u32) s_id.b.al_pa)); 1526 1527 if (btree_lookup32(&lport->lport_fcport_map, key)) { 1528 WARN(1, "Already have lport_fcport_map entry for s_id %x:%x:%x\n", 1529 s_id.b.domain, s_id.b.area, s_id.b.al_pa); 1530 btree_update32(&lport->lport_fcport_map, key, se_nacl); 1531 } else { 1532 btree_insert32(&lport->lport_fcport_map, key, se_nacl, 1533 GFP_ATOMIC); 1534 } 1535 1536 sess->d_id = s_id; 1537 nacl->nport_id = key; 1538 } 1539 1540 sess->conf_compl_supported = conf_compl_supported; 1541 1542 } 1543 1544 /* 1545 * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path. 1546 */ 1547 static struct qla_tgt_func_tmpl tcm_qla2xxx_template = { 1548 .find_cmd_by_tag = tcm_qla2xxx_find_cmd_by_tag, 1549 .handle_cmd = tcm_qla2xxx_handle_cmd, 1550 .handle_data = tcm_qla2xxx_handle_data, 1551 .handle_tmr = tcm_qla2xxx_handle_tmr, 1552 .free_cmd = tcm_qla2xxx_free_cmd, 1553 .free_mcmd = tcm_qla2xxx_free_mcmd, 1554 .free_session = tcm_qla2xxx_free_session, 1555 .update_sess = tcm_qla2xxx_update_sess, 1556 .check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl, 1557 .find_sess_by_s_id = tcm_qla2xxx_find_sess_by_s_id, 1558 .find_sess_by_loop_id = tcm_qla2xxx_find_sess_by_loop_id, 1559 .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map, 1560 .put_sess = tcm_qla2xxx_put_sess, 1561 .shutdown_sess = tcm_qla2xxx_shutdown_sess, 1562 .get_dif_tags = tcm_qla2xxx_dif_tags, 1563 .chk_dif_tags = tcm_qla2xxx_chk_dif_tags, 1564 }; 1565 1566 static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport) 1567 { 1568 int rc; 1569 1570 rc = btree_init32(&lport->lport_fcport_map); 1571 if (rc) { 1572 pr_err("Unable to initialize lport->lport_fcport_map btree\n"); 1573 return rc; 1574 } 1575 1576 lport->lport_loopid_map = 1577 vzalloc(array_size(65536, 1578 sizeof(struct tcm_qla2xxx_fc_loopid))); 1579 if (!lport->lport_loopid_map) { 1580 pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n", 1581 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536); 1582 btree_destroy32(&lport->lport_fcport_map); 1583 return -ENOMEM; 1584 } 1585 pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n", 1586 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536); 1587 return 0; 1588 } 1589 1590 static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha, 1591 void *target_lport_ptr, 1592 u64 npiv_wwpn, u64 npiv_wwnn) 1593 { 1594 struct qla_hw_data *ha = vha->hw; 1595 struct tcm_qla2xxx_lport *lport = 1596 (struct tcm_qla2xxx_lport *)target_lport_ptr; 1597 /* 1598 * Setup tgt_ops, local pointer to vha and target_lport_ptr 1599 */ 1600 ha->tgt.tgt_ops = &tcm_qla2xxx_template; 1601 vha->vha_tgt.target_lport_ptr = target_lport_ptr; 1602 lport->qla_vha = vha; 1603 1604 return 0; 1605 } 1606 1607 static struct se_wwn *tcm_qla2xxx_make_lport( 1608 struct target_fabric_configfs *tf, 1609 struct config_group *group, 1610 const char *name) 1611 { 1612 struct tcm_qla2xxx_lport *lport; 1613 u64 wwpn; 1614 int ret = -ENODEV; 1615 1616 if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0) 1617 return ERR_PTR(-EINVAL); 1618 1619 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL); 1620 if (!lport) { 1621 pr_err("Unable to allocate struct tcm_qla2xxx_lport\n"); 1622 return ERR_PTR(-ENOMEM); 1623 } 1624 lport->lport_wwpn = wwpn; 1625 tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN, 1626 wwpn); 1627 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) wwpn); 1628 1629 ret = tcm_qla2xxx_init_lport(lport); 1630 if (ret != 0) 1631 goto out; 1632 1633 ret = qlt_lport_register(lport, wwpn, 0, 0, 1634 tcm_qla2xxx_lport_register_cb); 1635 if (ret != 0) 1636 goto out_lport; 1637 1638 return &lport->lport_wwn; 1639 out_lport: 1640 vfree(lport->lport_loopid_map); 1641 btree_destroy32(&lport->lport_fcport_map); 1642 out: 1643 kfree(lport); 1644 return ERR_PTR(ret); 1645 } 1646 1647 static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn) 1648 { 1649 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1650 struct tcm_qla2xxx_lport, lport_wwn); 1651 struct scsi_qla_host *vha = lport->qla_vha; 1652 struct se_node_acl *node; 1653 u32 key = 0; 1654 1655 /* 1656 * Call into qla2x_target.c LLD logic to complete the 1657 * shutdown of struct qla_tgt after the call to 1658 * qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above.. 1659 */ 1660 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stopped) 1661 qlt_stop_phase2(vha->vha_tgt.qla_tgt); 1662 1663 qlt_lport_deregister(vha); 1664 1665 vfree(lport->lport_loopid_map); 1666 btree_for_each_safe32(&lport->lport_fcport_map, key, node) 1667 btree_remove32(&lport->lport_fcport_map, key); 1668 btree_destroy32(&lport->lport_fcport_map); 1669 kfree(lport); 1670 } 1671 1672 static int tcm_qla2xxx_lport_register_npiv_cb(struct scsi_qla_host *base_vha, 1673 void *target_lport_ptr, 1674 u64 npiv_wwpn, u64 npiv_wwnn) 1675 { 1676 struct fc_vport *vport; 1677 struct Scsi_Host *sh = base_vha->host; 1678 struct scsi_qla_host *npiv_vha; 1679 struct tcm_qla2xxx_lport *lport = 1680 (struct tcm_qla2xxx_lport *)target_lport_ptr; 1681 struct tcm_qla2xxx_lport *base_lport = 1682 (struct tcm_qla2xxx_lport *)base_vha->vha_tgt.target_lport_ptr; 1683 struct fc_vport_identifiers vport_id; 1684 1685 if (qla_ini_mode_enabled(base_vha)) { 1686 pr_err("qla2xxx base_vha not enabled for target mode\n"); 1687 return -EPERM; 1688 } 1689 1690 if (!base_lport || !base_lport->tpg_1 || 1691 !atomic_read(&base_lport->tpg_1->lport_tpg_enabled)) { 1692 pr_err("qla2xxx base_lport or tpg_1 not available\n"); 1693 return -EPERM; 1694 } 1695 1696 memset(&vport_id, 0, sizeof(vport_id)); 1697 vport_id.port_name = npiv_wwpn; 1698 vport_id.node_name = npiv_wwnn; 1699 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR; 1700 vport_id.vport_type = FC_PORTTYPE_NPIV; 1701 vport_id.disable = false; 1702 1703 vport = fc_vport_create(sh, 0, &vport_id); 1704 if (!vport) { 1705 pr_err("fc_vport_create failed for qla2xxx_npiv\n"); 1706 return -ENODEV; 1707 } 1708 /* 1709 * Setup local pointer to NPIV vhba + target_lport_ptr 1710 */ 1711 npiv_vha = (struct scsi_qla_host *)vport->dd_data; 1712 npiv_vha->vha_tgt.target_lport_ptr = target_lport_ptr; 1713 lport->qla_vha = npiv_vha; 1714 scsi_host_get(npiv_vha->host); 1715 return 0; 1716 } 1717 1718 1719 static struct se_wwn *tcm_qla2xxx_npiv_make_lport( 1720 struct target_fabric_configfs *tf, 1721 struct config_group *group, 1722 const char *name) 1723 { 1724 struct tcm_qla2xxx_lport *lport; 1725 u64 phys_wwpn, npiv_wwpn, npiv_wwnn; 1726 char *p, tmp[128]; 1727 int ret; 1728 1729 snprintf(tmp, 128, "%s", name); 1730 1731 p = strchr(tmp, '@'); 1732 if (!p) { 1733 pr_err("Unable to locate NPIV '@' separator\n"); 1734 return ERR_PTR(-EINVAL); 1735 } 1736 *p++ = '\0'; 1737 1738 if (tcm_qla2xxx_parse_wwn(tmp, &phys_wwpn, 1) < 0) 1739 return ERR_PTR(-EINVAL); 1740 1741 if (tcm_qla2xxx_npiv_parse_wwn(p, strlen(p)+1, 1742 &npiv_wwpn, &npiv_wwnn) < 0) 1743 return ERR_PTR(-EINVAL); 1744 1745 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL); 1746 if (!lport) { 1747 pr_err("Unable to allocate struct tcm_qla2xxx_lport for NPIV\n"); 1748 return ERR_PTR(-ENOMEM); 1749 } 1750 lport->lport_npiv_wwpn = npiv_wwpn; 1751 lport->lport_npiv_wwnn = npiv_wwnn; 1752 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) npiv_wwpn); 1753 1754 ret = tcm_qla2xxx_init_lport(lport); 1755 if (ret != 0) 1756 goto out; 1757 1758 ret = qlt_lport_register(lport, phys_wwpn, npiv_wwpn, npiv_wwnn, 1759 tcm_qla2xxx_lport_register_npiv_cb); 1760 if (ret != 0) 1761 goto out_lport; 1762 1763 return &lport->lport_wwn; 1764 out_lport: 1765 vfree(lport->lport_loopid_map); 1766 btree_destroy32(&lport->lport_fcport_map); 1767 out: 1768 kfree(lport); 1769 return ERR_PTR(ret); 1770 } 1771 1772 static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn) 1773 { 1774 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1775 struct tcm_qla2xxx_lport, lport_wwn); 1776 struct scsi_qla_host *npiv_vha = lport->qla_vha; 1777 struct qla_hw_data *ha = npiv_vha->hw; 1778 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 1779 1780 scsi_host_put(npiv_vha->host); 1781 /* 1782 * Notify libfc that we want to release the vha->fc_vport 1783 */ 1784 fc_vport_terminate(npiv_vha->fc_vport); 1785 scsi_host_put(base_vha->host); 1786 kfree(lport); 1787 } 1788 1789 1790 static ssize_t tcm_qla2xxx_wwn_version_show(struct config_item *item, 1791 char *page) 1792 { 1793 return sprintf(page, 1794 "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s on %s\n", 1795 QLA2XXX_VERSION, utsname()->sysname, 1796 utsname()->machine, utsname()->release); 1797 } 1798 1799 CONFIGFS_ATTR_RO(tcm_qla2xxx_wwn_, version); 1800 1801 static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = { 1802 &tcm_qla2xxx_wwn_attr_version, 1803 NULL, 1804 }; 1805 1806 static const struct target_core_fabric_ops tcm_qla2xxx_ops = { 1807 .module = THIS_MODULE, 1808 .fabric_name = "qla2xxx", 1809 .node_acl_size = sizeof(struct tcm_qla2xxx_nacl), 1810 /* 1811 * XXX: Limit assumes single page per scatter-gather-list entry. 1812 * Current maximum is ~4.9 MB per se_cmd->t_data_sg with PAGE_SIZE=4096 1813 */ 1814 .max_data_sg_nents = 1200, 1815 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn, 1816 .tpg_get_tag = tcm_qla2xxx_get_tag, 1817 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode, 1818 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache, 1819 .tpg_check_demo_mode_write_protect = 1820 tcm_qla2xxx_check_demo_write_protect, 1821 .tpg_check_prod_mode_write_protect = 1822 tcm_qla2xxx_check_prod_write_protect, 1823 .tpg_check_prot_fabric_only = tcm_qla2xxx_check_prot_fabric_only, 1824 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only, 1825 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index, 1826 .check_stop_free = tcm_qla2xxx_check_stop_free, 1827 .release_cmd = tcm_qla2xxx_release_cmd, 1828 .close_session = tcm_qla2xxx_close_session, 1829 .sess_get_index = tcm_qla2xxx_sess_get_index, 1830 .sess_get_initiator_sid = NULL, 1831 .write_pending = tcm_qla2xxx_write_pending, 1832 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs, 1833 .get_cmd_state = tcm_qla2xxx_get_cmd_state, 1834 .queue_data_in = tcm_qla2xxx_queue_data_in, 1835 .queue_status = tcm_qla2xxx_queue_status, 1836 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp, 1837 .aborted_task = tcm_qla2xxx_aborted_task, 1838 /* 1839 * Setup function pointers for generic logic in 1840 * target_core_fabric_configfs.c 1841 */ 1842 .fabric_make_wwn = tcm_qla2xxx_make_lport, 1843 .fabric_drop_wwn = tcm_qla2xxx_drop_lport, 1844 .fabric_make_tpg = tcm_qla2xxx_make_tpg, 1845 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg, 1846 .fabric_init_nodeacl = tcm_qla2xxx_init_nodeacl, 1847 1848 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs, 1849 .tfc_tpg_base_attrs = tcm_qla2xxx_tpg_attrs, 1850 .tfc_tpg_attrib_attrs = tcm_qla2xxx_tpg_attrib_attrs, 1851 }; 1852 1853 static const struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = { 1854 .module = THIS_MODULE, 1855 .fabric_name = "qla2xxx_npiv", 1856 .node_acl_size = sizeof(struct tcm_qla2xxx_nacl), 1857 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn, 1858 .tpg_get_tag = tcm_qla2xxx_get_tag, 1859 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode, 1860 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache, 1861 .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_demo_mode, 1862 .tpg_check_prod_mode_write_protect = 1863 tcm_qla2xxx_check_prod_write_protect, 1864 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only, 1865 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index, 1866 .check_stop_free = tcm_qla2xxx_check_stop_free, 1867 .release_cmd = tcm_qla2xxx_release_cmd, 1868 .close_session = tcm_qla2xxx_close_session, 1869 .sess_get_index = tcm_qla2xxx_sess_get_index, 1870 .sess_get_initiator_sid = NULL, 1871 .write_pending = tcm_qla2xxx_write_pending, 1872 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs, 1873 .get_cmd_state = tcm_qla2xxx_get_cmd_state, 1874 .queue_data_in = tcm_qla2xxx_queue_data_in, 1875 .queue_status = tcm_qla2xxx_queue_status, 1876 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp, 1877 .aborted_task = tcm_qla2xxx_aborted_task, 1878 /* 1879 * Setup function pointers for generic logic in 1880 * target_core_fabric_configfs.c 1881 */ 1882 .fabric_make_wwn = tcm_qla2xxx_npiv_make_lport, 1883 .fabric_drop_wwn = tcm_qla2xxx_npiv_drop_lport, 1884 .fabric_make_tpg = tcm_qla2xxx_npiv_make_tpg, 1885 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg, 1886 .fabric_init_nodeacl = tcm_qla2xxx_init_nodeacl, 1887 1888 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs, 1889 .tfc_tpg_base_attrs = tcm_qla2xxx_npiv_tpg_attrs, 1890 }; 1891 1892 static int tcm_qla2xxx_register_configfs(void) 1893 { 1894 int ret; 1895 1896 pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on %s\n", 1897 QLA2XXX_VERSION, utsname()->sysname, 1898 utsname()->machine, utsname()->release); 1899 1900 ret = target_register_template(&tcm_qla2xxx_ops); 1901 if (ret) 1902 return ret; 1903 1904 ret = target_register_template(&tcm_qla2xxx_npiv_ops); 1905 if (ret) 1906 goto out_fabric; 1907 1908 tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free", 1909 WQ_MEM_RECLAIM, 0); 1910 if (!tcm_qla2xxx_free_wq) { 1911 ret = -ENOMEM; 1912 goto out_fabric_npiv; 1913 } 1914 1915 return 0; 1916 1917 out_fabric_npiv: 1918 target_unregister_template(&tcm_qla2xxx_npiv_ops); 1919 out_fabric: 1920 target_unregister_template(&tcm_qla2xxx_ops); 1921 return ret; 1922 } 1923 1924 static void tcm_qla2xxx_deregister_configfs(void) 1925 { 1926 destroy_workqueue(tcm_qla2xxx_free_wq); 1927 1928 target_unregister_template(&tcm_qla2xxx_ops); 1929 target_unregister_template(&tcm_qla2xxx_npiv_ops); 1930 } 1931 1932 static int __init tcm_qla2xxx_init(void) 1933 { 1934 int ret; 1935 1936 ret = tcm_qla2xxx_register_configfs(); 1937 if (ret < 0) 1938 return ret; 1939 1940 return 0; 1941 } 1942 1943 static void __exit tcm_qla2xxx_exit(void) 1944 { 1945 tcm_qla2xxx_deregister_configfs(); 1946 } 1947 1948 MODULE_DESCRIPTION("TCM QLA24XX+ series NPIV enabled fabric driver"); 1949 MODULE_LICENSE("GPL"); 1950 module_init(tcm_qla2xxx_init); 1951 module_exit(tcm_qla2xxx_exit); 1952