1 /******************************************************************************* 2 * This file contains tcm implementation using v4 configfs fabric infrastructure 3 * for QLogic target mode HBAs 4 * 5 * (c) Copyright 2010-2013 Datera, Inc. 6 * 7 * Author: Nicholas A. Bellinger <nab@daterainc.com> 8 * 9 * tcm_qla2xxx_parse_wwn() and tcm_qla2xxx_format_wwn() contains code from 10 * the TCM_FC / Open-FCoE.org fabric module. 11 * 12 * Copyright (c) 2010 Cisco Systems, Inc 13 * 14 * This program is free software; you can redistribute it and/or modify 15 * it under the terms of the GNU General Public License as published by 16 * the Free Software Foundation; either version 2 of the License, or 17 * (at your option) any later version. 18 * 19 * This program is distributed in the hope that it will be useful, 20 * but WITHOUT ANY WARRANTY; without even the implied warranty of 21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 22 * GNU General Public License for more details. 23 ****************************************************************************/ 24 25 26 #include <linux/module.h> 27 #include <linux/moduleparam.h> 28 #include <generated/utsrelease.h> 29 #include <linux/utsname.h> 30 #include <linux/vmalloc.h> 31 #include <linux/init.h> 32 #include <linux/list.h> 33 #include <linux/slab.h> 34 #include <linux/kthread.h> 35 #include <linux/types.h> 36 #include <linux/string.h> 37 #include <linux/configfs.h> 38 #include <linux/ctype.h> 39 #include <asm/unaligned.h> 40 #include <scsi/scsi.h> 41 #include <scsi/scsi_host.h> 42 #include <scsi/scsi_device.h> 43 #include <scsi/scsi_cmnd.h> 44 #include <target/target_core_base.h> 45 #include <target/target_core_fabric.h> 46 47 #include "qla_def.h" 48 #include "qla_target.h" 49 #include "tcm_qla2xxx.h" 50 51 static struct workqueue_struct *tcm_qla2xxx_free_wq; 52 static struct workqueue_struct *tcm_qla2xxx_cmd_wq; 53 54 /* 55 * Parse WWN. 56 * If strict, we require lower-case hex and colon separators to be sure 57 * the name is the same as what would be generated by ft_format_wwn() 58 * so the name and wwn are mapped one-to-one. 59 */ 60 static ssize_t tcm_qla2xxx_parse_wwn(const char *name, u64 *wwn, int strict) 61 { 62 const char *cp; 63 char c; 64 u32 nibble; 65 u32 byte = 0; 66 u32 pos = 0; 67 u32 err; 68 69 *wwn = 0; 70 for (cp = name; cp < &name[TCM_QLA2XXX_NAMELEN - 1]; cp++) { 71 c = *cp; 72 if (c == '\n' && cp[1] == '\0') 73 continue; 74 if (strict && pos++ == 2 && byte++ < 7) { 75 pos = 0; 76 if (c == ':') 77 continue; 78 err = 1; 79 goto fail; 80 } 81 if (c == '\0') { 82 err = 2; 83 if (strict && byte != 8) 84 goto fail; 85 return cp - name; 86 } 87 err = 3; 88 if (isdigit(c)) 89 nibble = c - '0'; 90 else if (isxdigit(c) && (islower(c) || !strict)) 91 nibble = tolower(c) - 'a' + 10; 92 else 93 goto fail; 94 *wwn = (*wwn << 4) | nibble; 95 } 96 err = 4; 97 fail: 98 pr_debug("err %u len %zu pos %u byte %u\n", 99 err, cp - name, pos, byte); 100 return -1; 101 } 102 103 static ssize_t tcm_qla2xxx_format_wwn(char *buf, size_t len, u64 wwn) 104 { 105 u8 b[8]; 106 107 put_unaligned_be64(wwn, b); 108 return snprintf(buf, len, 109 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x", 110 b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7]); 111 } 112 113 static char *tcm_qla2xxx_get_fabric_name(void) 114 { 115 return "qla2xxx"; 116 } 117 118 /* 119 * From drivers/scsi/scsi_transport_fc.c:fc_parse_wwn 120 */ 121 static int tcm_qla2xxx_npiv_extract_wwn(const char *ns, u64 *nm) 122 { 123 unsigned int i, j; 124 u8 wwn[8]; 125 126 memset(wwn, 0, sizeof(wwn)); 127 128 /* Validate and store the new name */ 129 for (i = 0, j = 0; i < 16; i++) { 130 int value; 131 132 value = hex_to_bin(*ns++); 133 if (value >= 0) 134 j = (j << 4) | value; 135 else 136 return -EINVAL; 137 138 if (i % 2) { 139 wwn[i/2] = j & 0xff; 140 j = 0; 141 } 142 } 143 144 *nm = wwn_to_u64(wwn); 145 return 0; 146 } 147 148 /* 149 * This parsing logic follows drivers/scsi/scsi_transport_fc.c: 150 * store_fc_host_vport_create() 151 */ 152 static int tcm_qla2xxx_npiv_parse_wwn( 153 const char *name, 154 size_t count, 155 u64 *wwpn, 156 u64 *wwnn) 157 { 158 unsigned int cnt = count; 159 int rc; 160 161 *wwpn = 0; 162 *wwnn = 0; 163 164 /* count may include a LF at end of string */ 165 if (name[cnt-1] == '\n' || name[cnt-1] == 0) 166 cnt--; 167 168 /* validate we have enough characters for WWPN */ 169 if ((cnt != (16+1+16)) || (name[16] != ':')) 170 return -EINVAL; 171 172 rc = tcm_qla2xxx_npiv_extract_wwn(&name[0], wwpn); 173 if (rc != 0) 174 return rc; 175 176 rc = tcm_qla2xxx_npiv_extract_wwn(&name[17], wwnn); 177 if (rc != 0) 178 return rc; 179 180 return 0; 181 } 182 183 static char *tcm_qla2xxx_npiv_get_fabric_name(void) 184 { 185 return "qla2xxx_npiv"; 186 } 187 188 static char *tcm_qla2xxx_get_fabric_wwn(struct se_portal_group *se_tpg) 189 { 190 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 191 struct tcm_qla2xxx_tpg, se_tpg); 192 struct tcm_qla2xxx_lport *lport = tpg->lport; 193 194 return lport->lport_naa_name; 195 } 196 197 static u16 tcm_qla2xxx_get_tag(struct se_portal_group *se_tpg) 198 { 199 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 200 struct tcm_qla2xxx_tpg, se_tpg); 201 return tpg->lport_tpgt; 202 } 203 204 static int tcm_qla2xxx_check_demo_mode(struct se_portal_group *se_tpg) 205 { 206 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 207 struct tcm_qla2xxx_tpg, se_tpg); 208 209 return tpg->tpg_attrib.generate_node_acls; 210 } 211 212 static int tcm_qla2xxx_check_demo_mode_cache(struct se_portal_group *se_tpg) 213 { 214 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 215 struct tcm_qla2xxx_tpg, se_tpg); 216 217 return tpg->tpg_attrib.cache_dynamic_acls; 218 } 219 220 static int tcm_qla2xxx_check_demo_write_protect(struct se_portal_group *se_tpg) 221 { 222 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 223 struct tcm_qla2xxx_tpg, se_tpg); 224 225 return tpg->tpg_attrib.demo_mode_write_protect; 226 } 227 228 static int tcm_qla2xxx_check_prod_write_protect(struct se_portal_group *se_tpg) 229 { 230 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 231 struct tcm_qla2xxx_tpg, se_tpg); 232 233 return tpg->tpg_attrib.prod_mode_write_protect; 234 } 235 236 static int tcm_qla2xxx_check_demo_mode_login_only(struct se_portal_group *se_tpg) 237 { 238 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 239 struct tcm_qla2xxx_tpg, se_tpg); 240 241 return tpg->tpg_attrib.demo_mode_login_only; 242 } 243 244 static int tcm_qla2xxx_check_prot_fabric_only(struct se_portal_group *se_tpg) 245 { 246 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 247 struct tcm_qla2xxx_tpg, se_tpg); 248 249 return tpg->tpg_attrib.fabric_prot_type; 250 } 251 252 static u32 tcm_qla2xxx_tpg_get_inst_index(struct se_portal_group *se_tpg) 253 { 254 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 255 struct tcm_qla2xxx_tpg, se_tpg); 256 257 return tpg->lport_tpgt; 258 } 259 260 static void tcm_qla2xxx_complete_mcmd(struct work_struct *work) 261 { 262 struct qla_tgt_mgmt_cmd *mcmd = container_of(work, 263 struct qla_tgt_mgmt_cmd, free_work); 264 265 transport_generic_free_cmd(&mcmd->se_cmd, 0); 266 } 267 268 /* 269 * Called from qla_target_template->free_mcmd(), and will call 270 * tcm_qla2xxx_release_cmd() via normal struct target_core_fabric_ops 271 * release callback. qla_hw_data->hardware_lock is expected to be held 272 */ 273 static void tcm_qla2xxx_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd) 274 { 275 INIT_WORK(&mcmd->free_work, tcm_qla2xxx_complete_mcmd); 276 queue_work(tcm_qla2xxx_free_wq, &mcmd->free_work); 277 } 278 279 static void tcm_qla2xxx_complete_free(struct work_struct *work) 280 { 281 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 282 283 cmd->cmd_in_wq = 0; 284 285 WARN_ON(cmd->trc_flags & TRC_CMD_FREE); 286 287 cmd->vha->tgt_counters.qla_core_ret_sta_ctio++; 288 cmd->trc_flags |= TRC_CMD_FREE; 289 transport_generic_free_cmd(&cmd->se_cmd, 0); 290 } 291 292 /* 293 * Called from qla_target_template->free_cmd(), and will call 294 * tcm_qla2xxx_release_cmd via normal struct target_core_fabric_ops 295 * release callback. qla_hw_data->hardware_lock is expected to be held 296 */ 297 static void tcm_qla2xxx_free_cmd(struct qla_tgt_cmd *cmd) 298 { 299 cmd->vha->tgt_counters.core_qla_free_cmd++; 300 cmd->cmd_in_wq = 1; 301 302 WARN_ON(cmd->trc_flags & TRC_CMD_DONE); 303 cmd->trc_flags |= TRC_CMD_DONE; 304 305 INIT_WORK(&cmd->work, tcm_qla2xxx_complete_free); 306 queue_work_on(smp_processor_id(), tcm_qla2xxx_free_wq, &cmd->work); 307 } 308 309 /* 310 * Called from struct target_core_fabric_ops->check_stop_free() context 311 */ 312 static int tcm_qla2xxx_check_stop_free(struct se_cmd *se_cmd) 313 { 314 struct qla_tgt_cmd *cmd; 315 316 if ((se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) == 0) { 317 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd); 318 cmd->trc_flags |= TRC_CMD_CHK_STOP; 319 } 320 321 return target_put_sess_cmd(se_cmd); 322 } 323 324 /* tcm_qla2xxx_release_cmd - Callback from TCM Core to release underlying 325 * fabric descriptor @se_cmd command to release 326 */ 327 static void tcm_qla2xxx_release_cmd(struct se_cmd *se_cmd) 328 { 329 struct qla_tgt_cmd *cmd; 330 331 if (se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) { 332 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd, 333 struct qla_tgt_mgmt_cmd, se_cmd); 334 qlt_free_mcmd(mcmd); 335 return; 336 } 337 338 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd); 339 qlt_free_cmd(cmd); 340 } 341 342 static void tcm_qla2xxx_release_session(struct kref *kref) 343 { 344 struct fc_port *sess = container_of(kref, 345 struct fc_port, sess_kref); 346 347 qlt_unreg_sess(sess); 348 } 349 350 static void tcm_qla2xxx_put_sess(struct fc_port *sess) 351 { 352 if (!sess) 353 return; 354 355 assert_spin_locked(&sess->vha->hw->tgt.sess_lock); 356 kref_put(&sess->sess_kref, tcm_qla2xxx_release_session); 357 } 358 359 static void tcm_qla2xxx_close_session(struct se_session *se_sess) 360 { 361 struct fc_port *sess = se_sess->fabric_sess_ptr; 362 struct scsi_qla_host *vha; 363 unsigned long flags; 364 365 BUG_ON(!sess); 366 vha = sess->vha; 367 368 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 369 target_sess_cmd_list_set_waiting(se_sess); 370 tcm_qla2xxx_put_sess(sess); 371 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 372 } 373 374 static u32 tcm_qla2xxx_sess_get_index(struct se_session *se_sess) 375 { 376 return 0; 377 } 378 379 static int tcm_qla2xxx_write_pending(struct se_cmd *se_cmd) 380 { 381 struct qla_tgt_cmd *cmd = container_of(se_cmd, 382 struct qla_tgt_cmd, se_cmd); 383 384 if (cmd->aborted) { 385 /* Cmd can loop during Q-full. tcm_qla2xxx_aborted_task 386 * can get ahead of this cmd. tcm_qla2xxx_aborted_task 387 * already kick start the free. 388 */ 389 pr_debug("write_pending aborted cmd[%p] refcount %d " 390 "transport_state %x, t_state %x, se_cmd_flags %x\n", 391 cmd, kref_read(&cmd->se_cmd.cmd_kref), 392 cmd->se_cmd.transport_state, 393 cmd->se_cmd.t_state, 394 cmd->se_cmd.se_cmd_flags); 395 return 0; 396 } 397 cmd->trc_flags |= TRC_XFR_RDY; 398 cmd->bufflen = se_cmd->data_length; 399 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd); 400 401 cmd->sg_cnt = se_cmd->t_data_nents; 402 cmd->sg = se_cmd->t_data_sg; 403 404 cmd->prot_sg_cnt = se_cmd->t_prot_nents; 405 cmd->prot_sg = se_cmd->t_prot_sg; 406 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size; 407 se_cmd->pi_err = 0; 408 409 /* 410 * qla_target.c:qlt_rdy_to_xfer() will call pci_map_sg() to setup 411 * the SGL mappings into PCIe memory for incoming FCP WRITE data. 412 */ 413 return qlt_rdy_to_xfer(cmd); 414 } 415 416 static int tcm_qla2xxx_write_pending_status(struct se_cmd *se_cmd) 417 { 418 unsigned long flags; 419 /* 420 * Check for WRITE_PENDING status to determine if we need to wait for 421 * CTIO aborts to be posted via hardware in tcm_qla2xxx_handle_data(). 422 */ 423 spin_lock_irqsave(&se_cmd->t_state_lock, flags); 424 if (se_cmd->t_state == TRANSPORT_WRITE_PENDING || 425 se_cmd->t_state == TRANSPORT_COMPLETE_QF_WP) { 426 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags); 427 wait_for_completion_timeout(&se_cmd->t_transport_stop_comp, 428 50); 429 return 0; 430 } 431 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags); 432 433 return 0; 434 } 435 436 static void tcm_qla2xxx_set_default_node_attrs(struct se_node_acl *nacl) 437 { 438 return; 439 } 440 441 static int tcm_qla2xxx_get_cmd_state(struct se_cmd *se_cmd) 442 { 443 if (!(se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB)) { 444 struct qla_tgt_cmd *cmd = container_of(se_cmd, 445 struct qla_tgt_cmd, se_cmd); 446 return cmd->state; 447 } 448 449 return 0; 450 } 451 452 /* 453 * Called from process context in qla_target.c:qlt_do_work() code 454 */ 455 static int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd, 456 unsigned char *cdb, uint32_t data_length, int fcp_task_attr, 457 int data_dir, int bidi) 458 { 459 struct se_cmd *se_cmd = &cmd->se_cmd; 460 struct se_session *se_sess; 461 struct fc_port *sess; 462 #ifdef CONFIG_TCM_QLA2XXX_DEBUG 463 struct se_portal_group *se_tpg; 464 struct tcm_qla2xxx_tpg *tpg; 465 #endif 466 int flags = TARGET_SCF_ACK_KREF; 467 468 if (bidi) 469 flags |= TARGET_SCF_BIDI_OP; 470 471 if (se_cmd->cpuid != WORK_CPU_UNBOUND) 472 flags |= TARGET_SCF_USE_CPUID; 473 474 sess = cmd->sess; 475 if (!sess) { 476 pr_err("Unable to locate struct fc_port from qla_tgt_cmd\n"); 477 return -EINVAL; 478 } 479 480 se_sess = sess->se_sess; 481 if (!se_sess) { 482 pr_err("Unable to locate active struct se_session\n"); 483 return -EINVAL; 484 } 485 486 #ifdef CONFIG_TCM_QLA2XXX_DEBUG 487 se_tpg = se_sess->se_tpg; 488 tpg = container_of(se_tpg, struct tcm_qla2xxx_tpg, se_tpg); 489 if (unlikely(tpg->tpg_attrib.jam_host)) { 490 /* return, and dont run target_submit_cmd,discarding command */ 491 return 0; 492 } 493 #endif 494 495 cmd->vha->tgt_counters.qla_core_sbt_cmd++; 496 return target_submit_cmd(se_cmd, se_sess, cdb, &cmd->sense_buffer[0], 497 cmd->unpacked_lun, data_length, fcp_task_attr, 498 data_dir, flags); 499 } 500 501 static void tcm_qla2xxx_handle_data_work(struct work_struct *work) 502 { 503 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 504 unsigned long flags; 505 506 /* 507 * Ensure that the complete FCP WRITE payload has been received. 508 * Otherwise return an exception via CHECK_CONDITION status. 509 */ 510 cmd->cmd_in_wq = 0; 511 512 spin_lock_irqsave(&cmd->cmd_lock, flags); 513 cmd->data_work = 1; 514 if (cmd->aborted) { 515 cmd->data_work_free = 1; 516 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 517 518 tcm_qla2xxx_free_cmd(cmd); 519 return; 520 } 521 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 522 523 cmd->vha->tgt_counters.qla_core_ret_ctio++; 524 if (!cmd->write_data_transferred) { 525 /* 526 * Check if se_cmd has already been aborted via LUN_RESET, and 527 * waiting upon completion in tcm_qla2xxx_write_pending_status() 528 */ 529 if (cmd->se_cmd.transport_state & CMD_T_ABORTED) { 530 complete(&cmd->se_cmd.t_transport_stop_comp); 531 return; 532 } 533 534 switch (cmd->dif_err_code) { 535 case DIF_ERR_GRD: 536 cmd->se_cmd.pi_err = 537 TCM_LOGICAL_BLOCK_GUARD_CHECK_FAILED; 538 break; 539 case DIF_ERR_REF: 540 cmd->se_cmd.pi_err = 541 TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED; 542 break; 543 case DIF_ERR_APP: 544 cmd->se_cmd.pi_err = 545 TCM_LOGICAL_BLOCK_APP_TAG_CHECK_FAILED; 546 break; 547 case DIF_ERR_NONE: 548 default: 549 break; 550 } 551 552 if (cmd->se_cmd.pi_err) 553 transport_generic_request_failure(&cmd->se_cmd, 554 cmd->se_cmd.pi_err); 555 else 556 transport_generic_request_failure(&cmd->se_cmd, 557 TCM_CHECK_CONDITION_ABORT_CMD); 558 559 return; 560 } 561 562 return target_execute_cmd(&cmd->se_cmd); 563 } 564 565 /* 566 * Called from qla_target.c:qlt_do_ctio_completion() 567 */ 568 static void tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd) 569 { 570 cmd->trc_flags |= TRC_DATA_IN; 571 cmd->cmd_in_wq = 1; 572 INIT_WORK(&cmd->work, tcm_qla2xxx_handle_data_work); 573 queue_work_on(smp_processor_id(), tcm_qla2xxx_free_wq, &cmd->work); 574 } 575 576 static int tcm_qla2xxx_chk_dif_tags(uint32_t tag) 577 { 578 return 0; 579 } 580 581 static int tcm_qla2xxx_dif_tags(struct qla_tgt_cmd *cmd, 582 uint16_t *pfw_prot_opts) 583 { 584 struct se_cmd *se_cmd = &cmd->se_cmd; 585 586 if (!(se_cmd->prot_checks & TARGET_DIF_CHECK_GUARD)) 587 *pfw_prot_opts |= PO_DISABLE_GUARD_CHECK; 588 589 if (!(se_cmd->prot_checks & TARGET_DIF_CHECK_APPTAG)) 590 *pfw_prot_opts |= PO_DIS_APP_TAG_VALD; 591 592 return 0; 593 } 594 595 /* 596 * Called from qla_target.c:qlt_issue_task_mgmt() 597 */ 598 static int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *mcmd, uint32_t lun, 599 uint16_t tmr_func, uint32_t tag) 600 { 601 struct fc_port *sess = mcmd->sess; 602 struct se_cmd *se_cmd = &mcmd->se_cmd; 603 int transl_tmr_func = 0; 604 605 switch (tmr_func) { 606 case QLA_TGT_ABTS: 607 pr_debug("%ld: ABTS received\n", sess->vha->host_no); 608 transl_tmr_func = TMR_ABORT_TASK; 609 break; 610 case QLA_TGT_2G_ABORT_TASK: 611 pr_debug("%ld: 2G Abort Task received\n", sess->vha->host_no); 612 transl_tmr_func = TMR_ABORT_TASK; 613 break; 614 case QLA_TGT_CLEAR_ACA: 615 pr_debug("%ld: CLEAR_ACA received\n", sess->vha->host_no); 616 transl_tmr_func = TMR_CLEAR_ACA; 617 break; 618 case QLA_TGT_TARGET_RESET: 619 pr_debug("%ld: TARGET_RESET received\n", sess->vha->host_no); 620 transl_tmr_func = TMR_TARGET_WARM_RESET; 621 break; 622 case QLA_TGT_LUN_RESET: 623 pr_debug("%ld: LUN_RESET received\n", sess->vha->host_no); 624 transl_tmr_func = TMR_LUN_RESET; 625 break; 626 case QLA_TGT_CLEAR_TS: 627 pr_debug("%ld: CLEAR_TS received\n", sess->vha->host_no); 628 transl_tmr_func = TMR_CLEAR_TASK_SET; 629 break; 630 case QLA_TGT_ABORT_TS: 631 pr_debug("%ld: ABORT_TS received\n", sess->vha->host_no); 632 transl_tmr_func = TMR_ABORT_TASK_SET; 633 break; 634 default: 635 pr_debug("%ld: Unknown task mgmt fn 0x%x\n", 636 sess->vha->host_no, tmr_func); 637 return -ENOSYS; 638 } 639 640 return target_submit_tmr(se_cmd, sess->se_sess, NULL, lun, mcmd, 641 transl_tmr_func, GFP_ATOMIC, tag, TARGET_SCF_ACK_KREF); 642 } 643 644 static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd) 645 { 646 struct qla_tgt_cmd *cmd = container_of(se_cmd, 647 struct qla_tgt_cmd, se_cmd); 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 return 0; 661 } 662 663 cmd->trc_flags |= TRC_XMIT_DATA; 664 cmd->bufflen = se_cmd->data_length; 665 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd); 666 667 cmd->sg_cnt = se_cmd->t_data_nents; 668 cmd->sg = se_cmd->t_data_sg; 669 cmd->offset = 0; 670 671 cmd->prot_sg_cnt = se_cmd->t_prot_nents; 672 cmd->prot_sg = se_cmd->t_prot_sg; 673 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size; 674 se_cmd->pi_err = 0; 675 676 /* 677 * Now queue completed DATA_IN the qla2xxx LLD and response ring 678 */ 679 return qlt_xmit_response(cmd, QLA_TGT_XMIT_DATA|QLA_TGT_XMIT_STATUS, 680 se_cmd->scsi_status); 681 } 682 683 static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd) 684 { 685 struct qla_tgt_cmd *cmd = container_of(se_cmd, 686 struct qla_tgt_cmd, se_cmd); 687 int xmit_type = QLA_TGT_XMIT_STATUS; 688 689 cmd->bufflen = se_cmd->data_length; 690 cmd->sg = NULL; 691 cmd->sg_cnt = 0; 692 cmd->offset = 0; 693 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd); 694 if (cmd->trc_flags & TRC_XMIT_STATUS) { 695 pr_crit("Multiple calls for status = %p.\n", cmd); 696 dump_stack(); 697 } 698 cmd->trc_flags |= TRC_XMIT_STATUS; 699 700 if (se_cmd->data_direction == DMA_FROM_DEVICE) { 701 /* 702 * For FCP_READ with CHECK_CONDITION status, clear cmd->bufflen 703 * for qla_tgt_xmit_response LLD code 704 */ 705 if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) { 706 se_cmd->se_cmd_flags &= ~SCF_OVERFLOW_BIT; 707 se_cmd->residual_count = 0; 708 } 709 se_cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT; 710 se_cmd->residual_count += se_cmd->data_length; 711 712 cmd->bufflen = 0; 713 } 714 /* 715 * Now queue status response to qla2xxx LLD code and response ring 716 */ 717 return qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status); 718 } 719 720 static void tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd) 721 { 722 struct se_tmr_req *se_tmr = se_cmd->se_tmr_req; 723 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd, 724 struct qla_tgt_mgmt_cmd, se_cmd); 725 726 pr_debug("queue_tm_rsp: mcmd: %p func: 0x%02x response: 0x%02x\n", 727 mcmd, se_tmr->function, se_tmr->response); 728 /* 729 * Do translation between TCM TM response codes and 730 * QLA2xxx FC TM response codes. 731 */ 732 switch (se_tmr->response) { 733 case TMR_FUNCTION_COMPLETE: 734 mcmd->fc_tm_rsp = FC_TM_SUCCESS; 735 break; 736 case TMR_TASK_DOES_NOT_EXIST: 737 mcmd->fc_tm_rsp = FC_TM_BAD_CMD; 738 break; 739 case TMR_FUNCTION_REJECTED: 740 mcmd->fc_tm_rsp = FC_TM_REJECT; 741 break; 742 case TMR_LUN_DOES_NOT_EXIST: 743 default: 744 mcmd->fc_tm_rsp = FC_TM_FAILED; 745 break; 746 } 747 /* 748 * Queue the TM response to QLA2xxx LLD to build a 749 * CTIO response packet. 750 */ 751 qlt_xmit_tm_rsp(mcmd); 752 } 753 754 #define DATA_WORK_NOT_FREE(_cmd) (_cmd->data_work && !_cmd->data_work_free) 755 static void tcm_qla2xxx_aborted_task(struct se_cmd *se_cmd) 756 { 757 struct qla_tgt_cmd *cmd = container_of(se_cmd, 758 struct qla_tgt_cmd, se_cmd); 759 unsigned long flags; 760 761 if (qlt_abort_cmd(cmd)) 762 return; 763 764 spin_lock_irqsave(&cmd->cmd_lock, flags); 765 if ((cmd->state == QLA_TGT_STATE_NEW)|| 766 ((cmd->state == QLA_TGT_STATE_DATA_IN) && 767 DATA_WORK_NOT_FREE(cmd))) { 768 cmd->data_work_free = 1; 769 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 770 /* 771 * cmd has not reached fw, Use this trigger to free it. 772 */ 773 tcm_qla2xxx_free_cmd(cmd); 774 return; 775 } 776 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 777 return; 778 779 } 780 781 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *, 782 struct tcm_qla2xxx_nacl *, struct fc_port *); 783 /* 784 * Expected to be called with struct qla_hw_data->tgt.sess_lock held 785 */ 786 static void tcm_qla2xxx_clear_nacl_from_fcport_map(struct fc_port *sess) 787 { 788 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl; 789 struct se_portal_group *se_tpg = se_nacl->se_tpg; 790 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn; 791 struct tcm_qla2xxx_lport *lport = container_of(se_wwn, 792 struct tcm_qla2xxx_lport, lport_wwn); 793 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl, 794 struct tcm_qla2xxx_nacl, se_node_acl); 795 void *node; 796 797 pr_debug("fc_rport domain: port_id 0x%06x\n", nacl->nport_id); 798 799 node = btree_remove32(&lport->lport_fcport_map, nacl->nport_id); 800 if (WARN_ON(node && (node != se_nacl))) { 801 /* 802 * The nacl no longer matches what we think it should be. 803 * Most likely a new dynamic acl has been added while 804 * someone dropped the hardware lock. It clearly is a 805 * bug elsewhere, but this bit can't make things worse. 806 */ 807 btree_insert32(&lport->lport_fcport_map, nacl->nport_id, 808 node, GFP_ATOMIC); 809 } 810 811 pr_debug("Removed from fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%06x\n", 812 se_nacl, nacl->nport_wwnn, nacl->nport_id); 813 /* 814 * Now clear the se_nacl and session pointers from our HW lport lookup 815 * table mapping for this initiator's fabric S_ID and LOOP_ID entries. 816 * 817 * This is done ahead of callbacks into tcm_qla2xxx_free_session() -> 818 * target_wait_for_sess_cmds() before the session waits for outstanding 819 * I/O to complete, to avoid a race between session shutdown execution 820 * and incoming ATIOs or TMRs picking up a stale se_node_act reference. 821 */ 822 tcm_qla2xxx_clear_sess_lookup(lport, nacl, sess); 823 } 824 825 static void tcm_qla2xxx_shutdown_sess(struct fc_port *sess) 826 { 827 assert_spin_locked(&sess->vha->hw->tgt.sess_lock); 828 target_sess_cmd_list_set_waiting(sess->se_sess); 829 } 830 831 static int tcm_qla2xxx_init_nodeacl(struct se_node_acl *se_nacl, 832 const char *name) 833 { 834 struct tcm_qla2xxx_nacl *nacl = 835 container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 836 u64 wwnn; 837 838 if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0) 839 return -EINVAL; 840 841 nacl->nport_wwnn = wwnn; 842 tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn); 843 844 return 0; 845 } 846 847 /* Start items for tcm_qla2xxx_tpg_attrib_cit */ 848 849 #define DEF_QLA_TPG_ATTRIB(name) \ 850 \ 851 static ssize_t tcm_qla2xxx_tpg_attrib_##name##_show( \ 852 struct config_item *item, char *page) \ 853 { \ 854 struct se_portal_group *se_tpg = attrib_to_tpg(item); \ 855 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \ 856 struct tcm_qla2xxx_tpg, se_tpg); \ 857 \ 858 return sprintf(page, "%u\n", tpg->tpg_attrib.name); \ 859 } \ 860 \ 861 static ssize_t tcm_qla2xxx_tpg_attrib_##name##_store( \ 862 struct config_item *item, const char *page, size_t count) \ 863 { \ 864 struct se_portal_group *se_tpg = attrib_to_tpg(item); \ 865 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \ 866 struct tcm_qla2xxx_tpg, se_tpg); \ 867 struct tcm_qla2xxx_tpg_attrib *a = &tpg->tpg_attrib; \ 868 unsigned long val; \ 869 int ret; \ 870 \ 871 ret = kstrtoul(page, 0, &val); \ 872 if (ret < 0) { \ 873 pr_err("kstrtoul() failed with" \ 874 " ret: %d\n", ret); \ 875 return -EINVAL; \ 876 } \ 877 \ 878 if ((val != 0) && (val != 1)) { \ 879 pr_err("Illegal boolean value %lu\n", val); \ 880 return -EINVAL; \ 881 } \ 882 \ 883 a->name = val; \ 884 \ 885 return count; \ 886 } \ 887 CONFIGFS_ATTR(tcm_qla2xxx_tpg_attrib_, name) 888 889 DEF_QLA_TPG_ATTRIB(generate_node_acls); 890 DEF_QLA_TPG_ATTRIB(cache_dynamic_acls); 891 DEF_QLA_TPG_ATTRIB(demo_mode_write_protect); 892 DEF_QLA_TPG_ATTRIB(prod_mode_write_protect); 893 DEF_QLA_TPG_ATTRIB(demo_mode_login_only); 894 #ifdef CONFIG_TCM_QLA2XXX_DEBUG 895 DEF_QLA_TPG_ATTRIB(jam_host); 896 #endif 897 898 static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = { 899 &tcm_qla2xxx_tpg_attrib_attr_generate_node_acls, 900 &tcm_qla2xxx_tpg_attrib_attr_cache_dynamic_acls, 901 &tcm_qla2xxx_tpg_attrib_attr_demo_mode_write_protect, 902 &tcm_qla2xxx_tpg_attrib_attr_prod_mode_write_protect, 903 &tcm_qla2xxx_tpg_attrib_attr_demo_mode_login_only, 904 #ifdef CONFIG_TCM_QLA2XXX_DEBUG 905 &tcm_qla2xxx_tpg_attrib_attr_jam_host, 906 #endif 907 NULL, 908 }; 909 910 /* End items for tcm_qla2xxx_tpg_attrib_cit */ 911 912 static ssize_t tcm_qla2xxx_tpg_enable_show(struct config_item *item, 913 char *page) 914 { 915 struct se_portal_group *se_tpg = to_tpg(item); 916 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 917 struct tcm_qla2xxx_tpg, se_tpg); 918 919 return snprintf(page, PAGE_SIZE, "%d\n", 920 atomic_read(&tpg->lport_tpg_enabled)); 921 } 922 923 static void tcm_qla2xxx_depend_tpg(struct work_struct *work) 924 { 925 struct tcm_qla2xxx_tpg *base_tpg = container_of(work, 926 struct tcm_qla2xxx_tpg, tpg_base_work); 927 struct se_portal_group *se_tpg = &base_tpg->se_tpg; 928 struct scsi_qla_host *base_vha = base_tpg->lport->qla_vha; 929 930 if (!target_depend_item(&se_tpg->tpg_group.cg_item)) { 931 atomic_set(&base_tpg->lport_tpg_enabled, 1); 932 qlt_enable_vha(base_vha); 933 } 934 complete(&base_tpg->tpg_base_comp); 935 } 936 937 static void tcm_qla2xxx_undepend_tpg(struct work_struct *work) 938 { 939 struct tcm_qla2xxx_tpg *base_tpg = container_of(work, 940 struct tcm_qla2xxx_tpg, tpg_base_work); 941 struct se_portal_group *se_tpg = &base_tpg->se_tpg; 942 struct scsi_qla_host *base_vha = base_tpg->lport->qla_vha; 943 944 if (!qlt_stop_phase1(base_vha->vha_tgt.qla_tgt)) { 945 atomic_set(&base_tpg->lport_tpg_enabled, 0); 946 target_undepend_item(&se_tpg->tpg_group.cg_item); 947 } 948 complete(&base_tpg->tpg_base_comp); 949 } 950 951 static ssize_t tcm_qla2xxx_tpg_enable_store(struct config_item *item, 952 const char *page, size_t count) 953 { 954 struct se_portal_group *se_tpg = to_tpg(item); 955 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 956 struct tcm_qla2xxx_tpg, se_tpg); 957 unsigned long op; 958 int rc; 959 960 rc = kstrtoul(page, 0, &op); 961 if (rc < 0) { 962 pr_err("kstrtoul() returned %d\n", rc); 963 return -EINVAL; 964 } 965 if ((op != 1) && (op != 0)) { 966 pr_err("Illegal value for tpg_enable: %lu\n", op); 967 return -EINVAL; 968 } 969 if (op) { 970 if (atomic_read(&tpg->lport_tpg_enabled)) 971 return -EEXIST; 972 973 INIT_WORK(&tpg->tpg_base_work, tcm_qla2xxx_depend_tpg); 974 } else { 975 if (!atomic_read(&tpg->lport_tpg_enabled)) 976 return count; 977 978 INIT_WORK(&tpg->tpg_base_work, tcm_qla2xxx_undepend_tpg); 979 } 980 init_completion(&tpg->tpg_base_comp); 981 schedule_work(&tpg->tpg_base_work); 982 wait_for_completion(&tpg->tpg_base_comp); 983 984 if (op) { 985 if (!atomic_read(&tpg->lport_tpg_enabled)) 986 return -ENODEV; 987 } else { 988 if (atomic_read(&tpg->lport_tpg_enabled)) 989 return -EPERM; 990 } 991 return count; 992 } 993 994 static ssize_t tcm_qla2xxx_tpg_dynamic_sessions_show(struct config_item *item, 995 char *page) 996 { 997 return target_show_dynamic_sessions(to_tpg(item), page); 998 } 999 1000 static ssize_t tcm_qla2xxx_tpg_fabric_prot_type_store(struct config_item *item, 1001 const char *page, size_t count) 1002 { 1003 struct se_portal_group *se_tpg = to_tpg(item); 1004 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1005 struct tcm_qla2xxx_tpg, se_tpg); 1006 unsigned long val; 1007 int ret = kstrtoul(page, 0, &val); 1008 1009 if (ret) { 1010 pr_err("kstrtoul() returned %d for fabric_prot_type\n", ret); 1011 return ret; 1012 } 1013 if (val != 0 && val != 1 && val != 3) { 1014 pr_err("Invalid qla2xxx fabric_prot_type: %lu\n", val); 1015 return -EINVAL; 1016 } 1017 tpg->tpg_attrib.fabric_prot_type = val; 1018 1019 return count; 1020 } 1021 1022 static ssize_t tcm_qla2xxx_tpg_fabric_prot_type_show(struct config_item *item, 1023 char *page) 1024 { 1025 struct se_portal_group *se_tpg = to_tpg(item); 1026 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1027 struct tcm_qla2xxx_tpg, se_tpg); 1028 1029 return sprintf(page, "%d\n", tpg->tpg_attrib.fabric_prot_type); 1030 } 1031 1032 CONFIGFS_ATTR(tcm_qla2xxx_tpg_, enable); 1033 CONFIGFS_ATTR_RO(tcm_qla2xxx_tpg_, dynamic_sessions); 1034 CONFIGFS_ATTR(tcm_qla2xxx_tpg_, fabric_prot_type); 1035 1036 static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = { 1037 &tcm_qla2xxx_tpg_attr_enable, 1038 &tcm_qla2xxx_tpg_attr_dynamic_sessions, 1039 &tcm_qla2xxx_tpg_attr_fabric_prot_type, 1040 NULL, 1041 }; 1042 1043 static struct se_portal_group *tcm_qla2xxx_make_tpg( 1044 struct se_wwn *wwn, 1045 struct config_group *group, 1046 const char *name) 1047 { 1048 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1049 struct tcm_qla2xxx_lport, lport_wwn); 1050 struct tcm_qla2xxx_tpg *tpg; 1051 unsigned long tpgt; 1052 int ret; 1053 1054 if (strstr(name, "tpgt_") != name) 1055 return ERR_PTR(-EINVAL); 1056 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX) 1057 return ERR_PTR(-EINVAL); 1058 1059 if ((tpgt != 1)) { 1060 pr_err("In non NPIV mode, a single TPG=1 is used for HW port mappings\n"); 1061 return ERR_PTR(-ENOSYS); 1062 } 1063 1064 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL); 1065 if (!tpg) { 1066 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n"); 1067 return ERR_PTR(-ENOMEM); 1068 } 1069 tpg->lport = lport; 1070 tpg->lport_tpgt = tpgt; 1071 /* 1072 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic 1073 * NodeACLs 1074 */ 1075 tpg->tpg_attrib.generate_node_acls = 1; 1076 tpg->tpg_attrib.demo_mode_write_protect = 1; 1077 tpg->tpg_attrib.cache_dynamic_acls = 1; 1078 tpg->tpg_attrib.demo_mode_login_only = 1; 1079 tpg->tpg_attrib.jam_host = 0; 1080 1081 ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP); 1082 if (ret < 0) { 1083 kfree(tpg); 1084 return NULL; 1085 } 1086 1087 lport->tpg_1 = tpg; 1088 1089 return &tpg->se_tpg; 1090 } 1091 1092 static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg) 1093 { 1094 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1095 struct tcm_qla2xxx_tpg, se_tpg); 1096 struct tcm_qla2xxx_lport *lport = tpg->lport; 1097 struct scsi_qla_host *vha = lport->qla_vha; 1098 /* 1099 * Call into qla2x_target.c LLD logic to shutdown the active 1100 * FC Nexuses and disable target mode operation for this qla_hw_data 1101 */ 1102 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stop) 1103 qlt_stop_phase1(vha->vha_tgt.qla_tgt); 1104 1105 core_tpg_deregister(se_tpg); 1106 /* 1107 * Clear local TPG=1 pointer for non NPIV mode. 1108 */ 1109 lport->tpg_1 = NULL; 1110 kfree(tpg); 1111 } 1112 1113 static ssize_t tcm_qla2xxx_npiv_tpg_enable_show(struct config_item *item, 1114 char *page) 1115 { 1116 return tcm_qla2xxx_tpg_enable_show(item, page); 1117 } 1118 1119 static ssize_t tcm_qla2xxx_npiv_tpg_enable_store(struct config_item *item, 1120 const char *page, size_t count) 1121 { 1122 struct se_portal_group *se_tpg = to_tpg(item); 1123 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn; 1124 struct tcm_qla2xxx_lport *lport = container_of(se_wwn, 1125 struct tcm_qla2xxx_lport, lport_wwn); 1126 struct scsi_qla_host *vha = lport->qla_vha; 1127 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1128 struct tcm_qla2xxx_tpg, se_tpg); 1129 unsigned long op; 1130 int rc; 1131 1132 rc = kstrtoul(page, 0, &op); 1133 if (rc < 0) { 1134 pr_err("kstrtoul() returned %d\n", rc); 1135 return -EINVAL; 1136 } 1137 if ((op != 1) && (op != 0)) { 1138 pr_err("Illegal value for tpg_enable: %lu\n", op); 1139 return -EINVAL; 1140 } 1141 if (op) { 1142 if (atomic_read(&tpg->lport_tpg_enabled)) 1143 return -EEXIST; 1144 1145 atomic_set(&tpg->lport_tpg_enabled, 1); 1146 qlt_enable_vha(vha); 1147 } else { 1148 if (!atomic_read(&tpg->lport_tpg_enabled)) 1149 return count; 1150 1151 atomic_set(&tpg->lport_tpg_enabled, 0); 1152 qlt_stop_phase1(vha->vha_tgt.qla_tgt); 1153 } 1154 1155 return count; 1156 } 1157 1158 CONFIGFS_ATTR(tcm_qla2xxx_npiv_tpg_, enable); 1159 1160 static struct configfs_attribute *tcm_qla2xxx_npiv_tpg_attrs[] = { 1161 &tcm_qla2xxx_npiv_tpg_attr_enable, 1162 NULL, 1163 }; 1164 1165 static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg( 1166 struct se_wwn *wwn, 1167 struct config_group *group, 1168 const char *name) 1169 { 1170 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1171 struct tcm_qla2xxx_lport, lport_wwn); 1172 struct tcm_qla2xxx_tpg *tpg; 1173 unsigned long tpgt; 1174 int ret; 1175 1176 if (strstr(name, "tpgt_") != name) 1177 return ERR_PTR(-EINVAL); 1178 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX) 1179 return ERR_PTR(-EINVAL); 1180 1181 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL); 1182 if (!tpg) { 1183 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n"); 1184 return ERR_PTR(-ENOMEM); 1185 } 1186 tpg->lport = lport; 1187 tpg->lport_tpgt = tpgt; 1188 1189 /* 1190 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic 1191 * NodeACLs 1192 */ 1193 tpg->tpg_attrib.generate_node_acls = 1; 1194 tpg->tpg_attrib.demo_mode_write_protect = 1; 1195 tpg->tpg_attrib.cache_dynamic_acls = 1; 1196 tpg->tpg_attrib.demo_mode_login_only = 1; 1197 1198 ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP); 1199 if (ret < 0) { 1200 kfree(tpg); 1201 return NULL; 1202 } 1203 lport->tpg_1 = tpg; 1204 return &tpg->se_tpg; 1205 } 1206 1207 /* 1208 * Expected to be called with struct qla_hw_data->tgt.sess_lock held 1209 */ 1210 static struct fc_port *tcm_qla2xxx_find_sess_by_s_id( 1211 scsi_qla_host_t *vha, 1212 const uint8_t *s_id) 1213 { 1214 struct tcm_qla2xxx_lport *lport; 1215 struct se_node_acl *se_nacl; 1216 struct tcm_qla2xxx_nacl *nacl; 1217 u32 key; 1218 1219 lport = vha->vha_tgt.target_lport_ptr; 1220 if (!lport) { 1221 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1222 dump_stack(); 1223 return NULL; 1224 } 1225 1226 key = sid_to_key(s_id); 1227 pr_debug("find_sess_by_s_id: 0x%06x\n", key); 1228 1229 se_nacl = btree_lookup32(&lport->lport_fcport_map, key); 1230 if (!se_nacl) { 1231 pr_debug("Unable to locate s_id: 0x%06x\n", key); 1232 return NULL; 1233 } 1234 pr_debug("find_sess_by_s_id: located se_nacl: %p, initiatorname: %s\n", 1235 se_nacl, se_nacl->initiatorname); 1236 1237 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1238 if (!nacl->fc_port) { 1239 pr_err("Unable to locate struct fc_port\n"); 1240 return NULL; 1241 } 1242 1243 return nacl->fc_port; 1244 } 1245 1246 /* 1247 * Expected to be called with struct qla_hw_data->tgt.sess_lock held 1248 */ 1249 static void tcm_qla2xxx_set_sess_by_s_id( 1250 struct tcm_qla2xxx_lport *lport, 1251 struct se_node_acl *new_se_nacl, 1252 struct tcm_qla2xxx_nacl *nacl, 1253 struct se_session *se_sess, 1254 struct fc_port *fc_port, 1255 uint8_t *s_id) 1256 { 1257 u32 key; 1258 void *slot; 1259 int rc; 1260 1261 key = sid_to_key(s_id); 1262 pr_debug("set_sess_by_s_id: %06x\n", key); 1263 1264 slot = btree_lookup32(&lport->lport_fcport_map, key); 1265 if (!slot) { 1266 if (new_se_nacl) { 1267 pr_debug("Setting up new fc_port entry to new_se_nacl\n"); 1268 nacl->nport_id = key; 1269 rc = btree_insert32(&lport->lport_fcport_map, key, 1270 new_se_nacl, GFP_ATOMIC); 1271 if (rc) 1272 printk(KERN_ERR "Unable to insert s_id into fcport_map: %06x\n", 1273 (int)key); 1274 } else { 1275 pr_debug("Wiping nonexisting fc_port entry\n"); 1276 } 1277 1278 fc_port->se_sess = se_sess; 1279 nacl->fc_port = fc_port; 1280 return; 1281 } 1282 1283 if (nacl->fc_port) { 1284 if (new_se_nacl == NULL) { 1285 pr_debug("Clearing existing nacl->fc_port and fc_port entry\n"); 1286 btree_remove32(&lport->lport_fcport_map, key); 1287 nacl->fc_port = NULL; 1288 return; 1289 } 1290 pr_debug("Replacing existing nacl->fc_port and fc_port entry\n"); 1291 btree_update32(&lport->lport_fcport_map, key, new_se_nacl); 1292 fc_port->se_sess = se_sess; 1293 nacl->fc_port = fc_port; 1294 return; 1295 } 1296 1297 if (new_se_nacl == NULL) { 1298 pr_debug("Clearing existing fc_port entry\n"); 1299 btree_remove32(&lport->lport_fcport_map, key); 1300 return; 1301 } 1302 1303 pr_debug("Replacing existing fc_port entry w/o active nacl->fc_port\n"); 1304 btree_update32(&lport->lport_fcport_map, key, new_se_nacl); 1305 fc_port->se_sess = se_sess; 1306 nacl->fc_port = fc_port; 1307 1308 pr_debug("Setup nacl->fc_port %p by s_id for se_nacl: %p, initiatorname: %s\n", 1309 nacl->fc_port, new_se_nacl, new_se_nacl->initiatorname); 1310 } 1311 1312 /* 1313 * Expected to be called with struct qla_hw_data->tgt.sess_lock held 1314 */ 1315 static struct fc_port *tcm_qla2xxx_find_sess_by_loop_id( 1316 scsi_qla_host_t *vha, 1317 const uint16_t loop_id) 1318 { 1319 struct tcm_qla2xxx_lport *lport; 1320 struct se_node_acl *se_nacl; 1321 struct tcm_qla2xxx_nacl *nacl; 1322 struct tcm_qla2xxx_fc_loopid *fc_loopid; 1323 1324 lport = vha->vha_tgt.target_lport_ptr; 1325 if (!lport) { 1326 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1327 dump_stack(); 1328 return NULL; 1329 } 1330 1331 pr_debug("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id); 1332 1333 fc_loopid = lport->lport_loopid_map + loop_id; 1334 se_nacl = fc_loopid->se_nacl; 1335 if (!se_nacl) { 1336 pr_debug("Unable to locate se_nacl by loop_id: 0x%04x\n", 1337 loop_id); 1338 return NULL; 1339 } 1340 1341 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1342 1343 if (!nacl->fc_port) { 1344 pr_err("Unable to locate struct fc_port\n"); 1345 return NULL; 1346 } 1347 1348 return nacl->fc_port; 1349 } 1350 1351 /* 1352 * Expected to be called with struct qla_hw_data->tgt.sess_lock held 1353 */ 1354 static void tcm_qla2xxx_set_sess_by_loop_id( 1355 struct tcm_qla2xxx_lport *lport, 1356 struct se_node_acl *new_se_nacl, 1357 struct tcm_qla2xxx_nacl *nacl, 1358 struct se_session *se_sess, 1359 struct fc_port *fc_port, 1360 uint16_t loop_id) 1361 { 1362 struct se_node_acl *saved_nacl; 1363 struct tcm_qla2xxx_fc_loopid *fc_loopid; 1364 1365 pr_debug("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id); 1366 1367 fc_loopid = &((struct tcm_qla2xxx_fc_loopid *) 1368 lport->lport_loopid_map)[loop_id]; 1369 1370 saved_nacl = fc_loopid->se_nacl; 1371 if (!saved_nacl) { 1372 pr_debug("Setting up new fc_loopid->se_nacl to new_se_nacl\n"); 1373 fc_loopid->se_nacl = new_se_nacl; 1374 if (fc_port->se_sess != se_sess) 1375 fc_port->se_sess = se_sess; 1376 if (nacl->fc_port != fc_port) 1377 nacl->fc_port = fc_port; 1378 return; 1379 } 1380 1381 if (nacl->fc_port) { 1382 if (new_se_nacl == NULL) { 1383 pr_debug("Clearing nacl->fc_port and fc_loopid->se_nacl\n"); 1384 fc_loopid->se_nacl = NULL; 1385 nacl->fc_port = NULL; 1386 return; 1387 } 1388 1389 pr_debug("Replacing existing nacl->fc_port and fc_loopid->se_nacl\n"); 1390 fc_loopid->se_nacl = new_se_nacl; 1391 if (fc_port->se_sess != se_sess) 1392 fc_port->se_sess = se_sess; 1393 if (nacl->fc_port != fc_port) 1394 nacl->fc_port = fc_port; 1395 return; 1396 } 1397 1398 if (new_se_nacl == NULL) { 1399 pr_debug("Clearing fc_loopid->se_nacl\n"); 1400 fc_loopid->se_nacl = NULL; 1401 return; 1402 } 1403 1404 pr_debug("Replacing existing fc_loopid->se_nacl w/o active nacl->fc_port\n"); 1405 fc_loopid->se_nacl = new_se_nacl; 1406 if (fc_port->se_sess != se_sess) 1407 fc_port->se_sess = se_sess; 1408 if (nacl->fc_port != fc_port) 1409 nacl->fc_port = fc_port; 1410 1411 pr_debug("Setup nacl->fc_port %p by loop_id for se_nacl: %p, initiatorname: %s\n", 1412 nacl->fc_port, new_se_nacl, new_se_nacl->initiatorname); 1413 } 1414 1415 /* 1416 * Should always be called with qla_hw_data->tgt.sess_lock held. 1417 */ 1418 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *lport, 1419 struct tcm_qla2xxx_nacl *nacl, struct fc_port *sess) 1420 { 1421 struct se_session *se_sess = sess->se_sess; 1422 unsigned char be_sid[3]; 1423 1424 be_sid[0] = sess->d_id.b.domain; 1425 be_sid[1] = sess->d_id.b.area; 1426 be_sid[2] = sess->d_id.b.al_pa; 1427 1428 tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess, 1429 sess, be_sid); 1430 tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess, 1431 sess, sess->loop_id); 1432 } 1433 1434 static void tcm_qla2xxx_free_session(struct fc_port *sess) 1435 { 1436 struct qla_tgt *tgt = sess->tgt; 1437 struct qla_hw_data *ha = tgt->ha; 1438 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev); 1439 struct se_session *se_sess; 1440 struct tcm_qla2xxx_lport *lport; 1441 1442 BUG_ON(in_interrupt()); 1443 1444 se_sess = sess->se_sess; 1445 if (!se_sess) { 1446 pr_err("struct fc_port->se_sess is NULL\n"); 1447 dump_stack(); 1448 return; 1449 } 1450 1451 lport = vha->vha_tgt.target_lport_ptr; 1452 if (!lport) { 1453 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1454 dump_stack(); 1455 return; 1456 } 1457 target_wait_for_sess_cmds(se_sess); 1458 1459 transport_deregister_session_configfs(sess->se_sess); 1460 transport_deregister_session(sess->se_sess); 1461 } 1462 1463 static int tcm_qla2xxx_session_cb(struct se_portal_group *se_tpg, 1464 struct se_session *se_sess, void *p) 1465 { 1466 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1467 struct tcm_qla2xxx_tpg, se_tpg); 1468 struct tcm_qla2xxx_lport *lport = tpg->lport; 1469 struct qla_hw_data *ha = lport->qla_vha->hw; 1470 struct se_node_acl *se_nacl = se_sess->se_node_acl; 1471 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl, 1472 struct tcm_qla2xxx_nacl, se_node_acl); 1473 struct fc_port *qlat_sess = p; 1474 uint16_t loop_id = qlat_sess->loop_id; 1475 unsigned long flags; 1476 unsigned char be_sid[3]; 1477 1478 be_sid[0] = qlat_sess->d_id.b.domain; 1479 be_sid[1] = qlat_sess->d_id.b.area; 1480 be_sid[2] = qlat_sess->d_id.b.al_pa; 1481 1482 /* 1483 * And now setup se_nacl and session pointers into HW lport internal 1484 * mappings for fabric S_ID and LOOP_ID. 1485 */ 1486 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1487 tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl, 1488 se_sess, qlat_sess, be_sid); 1489 tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl, 1490 se_sess, qlat_sess, loop_id); 1491 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1492 1493 return 0; 1494 } 1495 1496 /* 1497 * Called via qlt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl() 1498 * to locate struct se_node_acl 1499 */ 1500 static int tcm_qla2xxx_check_initiator_node_acl( 1501 scsi_qla_host_t *vha, 1502 unsigned char *fc_wwpn, 1503 struct fc_port *qlat_sess) 1504 { 1505 struct qla_hw_data *ha = vha->hw; 1506 struct tcm_qla2xxx_lport *lport; 1507 struct tcm_qla2xxx_tpg *tpg; 1508 struct se_session *se_sess; 1509 unsigned char port_name[36]; 1510 int num_tags = (ha->cur_fw_xcb_count) ? ha->cur_fw_xcb_count : 1511 TCM_QLA2XXX_DEFAULT_TAGS; 1512 1513 lport = vha->vha_tgt.target_lport_ptr; 1514 if (!lport) { 1515 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1516 dump_stack(); 1517 return -EINVAL; 1518 } 1519 /* 1520 * Locate the TPG=1 reference.. 1521 */ 1522 tpg = lport->tpg_1; 1523 if (!tpg) { 1524 pr_err("Unable to lcoate struct tcm_qla2xxx_lport->tpg_1\n"); 1525 return -EINVAL; 1526 } 1527 /* 1528 * Format the FCP Initiator port_name into colon seperated values to 1529 * match the format by tcm_qla2xxx explict ConfigFS NodeACLs. 1530 */ 1531 memset(&port_name, 0, 36); 1532 snprintf(port_name, sizeof(port_name), "%8phC", fc_wwpn); 1533 /* 1534 * Locate our struct se_node_acl either from an explict NodeACL created 1535 * via ConfigFS, or via running in TPG demo mode. 1536 */ 1537 se_sess = target_alloc_session(&tpg->se_tpg, num_tags, 1538 sizeof(struct qla_tgt_cmd), 1539 TARGET_PROT_ALL, port_name, 1540 qlat_sess, tcm_qla2xxx_session_cb); 1541 if (IS_ERR(se_sess)) 1542 return PTR_ERR(se_sess); 1543 1544 return 0; 1545 } 1546 1547 static void tcm_qla2xxx_update_sess(struct fc_port *sess, port_id_t s_id, 1548 uint16_t loop_id, bool conf_compl_supported) 1549 { 1550 struct qla_tgt *tgt = sess->tgt; 1551 struct qla_hw_data *ha = tgt->ha; 1552 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev); 1553 struct tcm_qla2xxx_lport *lport = vha->vha_tgt.target_lport_ptr; 1554 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl; 1555 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl, 1556 struct tcm_qla2xxx_nacl, se_node_acl); 1557 u32 key; 1558 1559 1560 if (sess->loop_id != loop_id || sess->d_id.b24 != s_id.b24) 1561 pr_info("Updating session %p from port %8phC loop_id %d -> %d s_id %x:%x:%x -> %x:%x:%x\n", 1562 sess, sess->port_name, 1563 sess->loop_id, loop_id, sess->d_id.b.domain, 1564 sess->d_id.b.area, sess->d_id.b.al_pa, s_id.b.domain, 1565 s_id.b.area, s_id.b.al_pa); 1566 1567 if (sess->loop_id != loop_id) { 1568 /* 1569 * Because we can shuffle loop IDs around and we 1570 * update different sessions non-atomically, we might 1571 * have overwritten this session's old loop ID 1572 * already, and we might end up overwriting some other 1573 * session that will be updated later. So we have to 1574 * be extra careful and we can't warn about those things... 1575 */ 1576 if (lport->lport_loopid_map[sess->loop_id].se_nacl == se_nacl) 1577 lport->lport_loopid_map[sess->loop_id].se_nacl = NULL; 1578 1579 lport->lport_loopid_map[loop_id].se_nacl = se_nacl; 1580 1581 sess->loop_id = loop_id; 1582 } 1583 1584 if (sess->d_id.b24 != s_id.b24) { 1585 key = (((u32) sess->d_id.b.domain << 16) | 1586 ((u32) sess->d_id.b.area << 8) | 1587 ((u32) sess->d_id.b.al_pa)); 1588 1589 if (btree_lookup32(&lport->lport_fcport_map, key)) 1590 WARN(btree_remove32(&lport->lport_fcport_map, key) != 1591 se_nacl, "Found wrong se_nacl when updating s_id %x:%x:%x\n", 1592 sess->d_id.b.domain, sess->d_id.b.area, 1593 sess->d_id.b.al_pa); 1594 else 1595 WARN(1, "No lport_fcport_map entry for s_id %x:%x:%x\n", 1596 sess->d_id.b.domain, sess->d_id.b.area, 1597 sess->d_id.b.al_pa); 1598 1599 key = (((u32) s_id.b.domain << 16) | 1600 ((u32) s_id.b.area << 8) | 1601 ((u32) s_id.b.al_pa)); 1602 1603 if (btree_lookup32(&lport->lport_fcport_map, key)) { 1604 WARN(1, "Already have lport_fcport_map entry for s_id %x:%x:%x\n", 1605 s_id.b.domain, s_id.b.area, s_id.b.al_pa); 1606 btree_update32(&lport->lport_fcport_map, key, se_nacl); 1607 } else { 1608 btree_insert32(&lport->lport_fcport_map, key, se_nacl, 1609 GFP_ATOMIC); 1610 } 1611 1612 sess->d_id = s_id; 1613 nacl->nport_id = key; 1614 } 1615 1616 sess->conf_compl_supported = conf_compl_supported; 1617 1618 /* Reset logout parameters to default */ 1619 sess->logout_on_delete = 1; 1620 sess->keep_nport_handle = 0; 1621 } 1622 1623 /* 1624 * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path. 1625 */ 1626 static struct qla_tgt_func_tmpl tcm_qla2xxx_template = { 1627 .handle_cmd = tcm_qla2xxx_handle_cmd, 1628 .handle_data = tcm_qla2xxx_handle_data, 1629 .handle_tmr = tcm_qla2xxx_handle_tmr, 1630 .free_cmd = tcm_qla2xxx_free_cmd, 1631 .free_mcmd = tcm_qla2xxx_free_mcmd, 1632 .free_session = tcm_qla2xxx_free_session, 1633 .update_sess = tcm_qla2xxx_update_sess, 1634 .check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl, 1635 .find_sess_by_s_id = tcm_qla2xxx_find_sess_by_s_id, 1636 .find_sess_by_loop_id = tcm_qla2xxx_find_sess_by_loop_id, 1637 .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map, 1638 .put_sess = tcm_qla2xxx_put_sess, 1639 .shutdown_sess = tcm_qla2xxx_shutdown_sess, 1640 .get_dif_tags = tcm_qla2xxx_dif_tags, 1641 .chk_dif_tags = tcm_qla2xxx_chk_dif_tags, 1642 }; 1643 1644 static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport) 1645 { 1646 int rc; 1647 1648 rc = btree_init32(&lport->lport_fcport_map); 1649 if (rc) { 1650 pr_err("Unable to initialize lport->lport_fcport_map btree\n"); 1651 return rc; 1652 } 1653 1654 lport->lport_loopid_map = vmalloc(sizeof(struct tcm_qla2xxx_fc_loopid) * 1655 65536); 1656 if (!lport->lport_loopid_map) { 1657 pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n", 1658 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536); 1659 btree_destroy32(&lport->lport_fcport_map); 1660 return -ENOMEM; 1661 } 1662 memset(lport->lport_loopid_map, 0, sizeof(struct tcm_qla2xxx_fc_loopid) 1663 * 65536); 1664 pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n", 1665 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536); 1666 return 0; 1667 } 1668 1669 static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha, 1670 void *target_lport_ptr, 1671 u64 npiv_wwpn, u64 npiv_wwnn) 1672 { 1673 struct qla_hw_data *ha = vha->hw; 1674 struct tcm_qla2xxx_lport *lport = 1675 (struct tcm_qla2xxx_lport *)target_lport_ptr; 1676 /* 1677 * Setup tgt_ops, local pointer to vha and target_lport_ptr 1678 */ 1679 ha->tgt.tgt_ops = &tcm_qla2xxx_template; 1680 vha->vha_tgt.target_lport_ptr = target_lport_ptr; 1681 lport->qla_vha = vha; 1682 1683 return 0; 1684 } 1685 1686 static struct se_wwn *tcm_qla2xxx_make_lport( 1687 struct target_fabric_configfs *tf, 1688 struct config_group *group, 1689 const char *name) 1690 { 1691 struct tcm_qla2xxx_lport *lport; 1692 u64 wwpn; 1693 int ret = -ENODEV; 1694 1695 if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0) 1696 return ERR_PTR(-EINVAL); 1697 1698 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL); 1699 if (!lport) { 1700 pr_err("Unable to allocate struct tcm_qla2xxx_lport\n"); 1701 return ERR_PTR(-ENOMEM); 1702 } 1703 lport->lport_wwpn = wwpn; 1704 tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN, 1705 wwpn); 1706 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) wwpn); 1707 1708 ret = tcm_qla2xxx_init_lport(lport); 1709 if (ret != 0) 1710 goto out; 1711 1712 ret = qlt_lport_register(lport, wwpn, 0, 0, 1713 tcm_qla2xxx_lport_register_cb); 1714 if (ret != 0) 1715 goto out_lport; 1716 1717 return &lport->lport_wwn; 1718 out_lport: 1719 vfree(lport->lport_loopid_map); 1720 btree_destroy32(&lport->lport_fcport_map); 1721 out: 1722 kfree(lport); 1723 return ERR_PTR(ret); 1724 } 1725 1726 static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn) 1727 { 1728 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1729 struct tcm_qla2xxx_lport, lport_wwn); 1730 struct scsi_qla_host *vha = lport->qla_vha; 1731 struct se_node_acl *node; 1732 u32 key = 0; 1733 1734 /* 1735 * Call into qla2x_target.c LLD logic to complete the 1736 * shutdown of struct qla_tgt after the call to 1737 * qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above.. 1738 */ 1739 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stopped) 1740 qlt_stop_phase2(vha->vha_tgt.qla_tgt); 1741 1742 qlt_lport_deregister(vha); 1743 1744 vfree(lport->lport_loopid_map); 1745 btree_for_each_safe32(&lport->lport_fcport_map, key, node) 1746 btree_remove32(&lport->lport_fcport_map, key); 1747 btree_destroy32(&lport->lport_fcport_map); 1748 kfree(lport); 1749 } 1750 1751 static int tcm_qla2xxx_lport_register_npiv_cb(struct scsi_qla_host *base_vha, 1752 void *target_lport_ptr, 1753 u64 npiv_wwpn, u64 npiv_wwnn) 1754 { 1755 struct fc_vport *vport; 1756 struct Scsi_Host *sh = base_vha->host; 1757 struct scsi_qla_host *npiv_vha; 1758 struct tcm_qla2xxx_lport *lport = 1759 (struct tcm_qla2xxx_lport *)target_lport_ptr; 1760 struct tcm_qla2xxx_lport *base_lport = 1761 (struct tcm_qla2xxx_lport *)base_vha->vha_tgt.target_lport_ptr; 1762 struct fc_vport_identifiers vport_id; 1763 1764 if (qla_ini_mode_enabled(base_vha)) { 1765 pr_err("qla2xxx base_vha not enabled for target mode\n"); 1766 return -EPERM; 1767 } 1768 1769 if (!base_lport || !base_lport->tpg_1 || 1770 !atomic_read(&base_lport->tpg_1->lport_tpg_enabled)) { 1771 pr_err("qla2xxx base_lport or tpg_1 not available\n"); 1772 return -EPERM; 1773 } 1774 1775 memset(&vport_id, 0, sizeof(vport_id)); 1776 vport_id.port_name = npiv_wwpn; 1777 vport_id.node_name = npiv_wwnn; 1778 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR; 1779 vport_id.vport_type = FC_PORTTYPE_NPIV; 1780 vport_id.disable = false; 1781 1782 vport = fc_vport_create(sh, 0, &vport_id); 1783 if (!vport) { 1784 pr_err("fc_vport_create failed for qla2xxx_npiv\n"); 1785 return -ENODEV; 1786 } 1787 /* 1788 * Setup local pointer to NPIV vhba + target_lport_ptr 1789 */ 1790 npiv_vha = (struct scsi_qla_host *)vport->dd_data; 1791 npiv_vha->vha_tgt.target_lport_ptr = target_lport_ptr; 1792 lport->qla_vha = npiv_vha; 1793 scsi_host_get(npiv_vha->host); 1794 return 0; 1795 } 1796 1797 1798 static struct se_wwn *tcm_qla2xxx_npiv_make_lport( 1799 struct target_fabric_configfs *tf, 1800 struct config_group *group, 1801 const char *name) 1802 { 1803 struct tcm_qla2xxx_lport *lport; 1804 u64 phys_wwpn, npiv_wwpn, npiv_wwnn; 1805 char *p, tmp[128]; 1806 int ret; 1807 1808 snprintf(tmp, 128, "%s", name); 1809 1810 p = strchr(tmp, '@'); 1811 if (!p) { 1812 pr_err("Unable to locate NPIV '@' separator\n"); 1813 return ERR_PTR(-EINVAL); 1814 } 1815 *p++ = '\0'; 1816 1817 if (tcm_qla2xxx_parse_wwn(tmp, &phys_wwpn, 1) < 0) 1818 return ERR_PTR(-EINVAL); 1819 1820 if (tcm_qla2xxx_npiv_parse_wwn(p, strlen(p)+1, 1821 &npiv_wwpn, &npiv_wwnn) < 0) 1822 return ERR_PTR(-EINVAL); 1823 1824 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL); 1825 if (!lport) { 1826 pr_err("Unable to allocate struct tcm_qla2xxx_lport for NPIV\n"); 1827 return ERR_PTR(-ENOMEM); 1828 } 1829 lport->lport_npiv_wwpn = npiv_wwpn; 1830 lport->lport_npiv_wwnn = npiv_wwnn; 1831 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) npiv_wwpn); 1832 1833 ret = tcm_qla2xxx_init_lport(lport); 1834 if (ret != 0) 1835 goto out; 1836 1837 ret = qlt_lport_register(lport, phys_wwpn, npiv_wwpn, npiv_wwnn, 1838 tcm_qla2xxx_lport_register_npiv_cb); 1839 if (ret != 0) 1840 goto out_lport; 1841 1842 return &lport->lport_wwn; 1843 out_lport: 1844 vfree(lport->lport_loopid_map); 1845 btree_destroy32(&lport->lport_fcport_map); 1846 out: 1847 kfree(lport); 1848 return ERR_PTR(ret); 1849 } 1850 1851 static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn) 1852 { 1853 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1854 struct tcm_qla2xxx_lport, lport_wwn); 1855 struct scsi_qla_host *npiv_vha = lport->qla_vha; 1856 struct qla_hw_data *ha = npiv_vha->hw; 1857 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 1858 1859 scsi_host_put(npiv_vha->host); 1860 /* 1861 * Notify libfc that we want to release the vha->fc_vport 1862 */ 1863 fc_vport_terminate(npiv_vha->fc_vport); 1864 scsi_host_put(base_vha->host); 1865 kfree(lport); 1866 } 1867 1868 1869 static ssize_t tcm_qla2xxx_wwn_version_show(struct config_item *item, 1870 char *page) 1871 { 1872 return sprintf(page, 1873 "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s on " 1874 UTS_RELEASE"\n", QLA2XXX_VERSION, utsname()->sysname, 1875 utsname()->machine); 1876 } 1877 1878 CONFIGFS_ATTR_RO(tcm_qla2xxx_wwn_, version); 1879 1880 static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = { 1881 &tcm_qla2xxx_wwn_attr_version, 1882 NULL, 1883 }; 1884 1885 static const struct target_core_fabric_ops tcm_qla2xxx_ops = { 1886 .module = THIS_MODULE, 1887 .name = "qla2xxx", 1888 .node_acl_size = sizeof(struct tcm_qla2xxx_nacl), 1889 /* 1890 * XXX: Limit assumes single page per scatter-gather-list entry. 1891 * Current maximum is ~4.9 MB per se_cmd->t_data_sg with PAGE_SIZE=4096 1892 */ 1893 .max_data_sg_nents = 1200, 1894 .get_fabric_name = tcm_qla2xxx_get_fabric_name, 1895 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn, 1896 .tpg_get_tag = tcm_qla2xxx_get_tag, 1897 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode, 1898 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache, 1899 .tpg_check_demo_mode_write_protect = 1900 tcm_qla2xxx_check_demo_write_protect, 1901 .tpg_check_prod_mode_write_protect = 1902 tcm_qla2xxx_check_prod_write_protect, 1903 .tpg_check_prot_fabric_only = tcm_qla2xxx_check_prot_fabric_only, 1904 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only, 1905 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index, 1906 .check_stop_free = tcm_qla2xxx_check_stop_free, 1907 .release_cmd = tcm_qla2xxx_release_cmd, 1908 .close_session = tcm_qla2xxx_close_session, 1909 .sess_get_index = tcm_qla2xxx_sess_get_index, 1910 .sess_get_initiator_sid = NULL, 1911 .write_pending = tcm_qla2xxx_write_pending, 1912 .write_pending_status = tcm_qla2xxx_write_pending_status, 1913 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs, 1914 .get_cmd_state = tcm_qla2xxx_get_cmd_state, 1915 .queue_data_in = tcm_qla2xxx_queue_data_in, 1916 .queue_status = tcm_qla2xxx_queue_status, 1917 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp, 1918 .aborted_task = tcm_qla2xxx_aborted_task, 1919 /* 1920 * Setup function pointers for generic logic in 1921 * target_core_fabric_configfs.c 1922 */ 1923 .fabric_make_wwn = tcm_qla2xxx_make_lport, 1924 .fabric_drop_wwn = tcm_qla2xxx_drop_lport, 1925 .fabric_make_tpg = tcm_qla2xxx_make_tpg, 1926 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg, 1927 .fabric_init_nodeacl = tcm_qla2xxx_init_nodeacl, 1928 1929 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs, 1930 .tfc_tpg_base_attrs = tcm_qla2xxx_tpg_attrs, 1931 .tfc_tpg_attrib_attrs = tcm_qla2xxx_tpg_attrib_attrs, 1932 }; 1933 1934 static const struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = { 1935 .module = THIS_MODULE, 1936 .name = "qla2xxx_npiv", 1937 .node_acl_size = sizeof(struct tcm_qla2xxx_nacl), 1938 .get_fabric_name = tcm_qla2xxx_npiv_get_fabric_name, 1939 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn, 1940 .tpg_get_tag = tcm_qla2xxx_get_tag, 1941 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode, 1942 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache, 1943 .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_demo_mode, 1944 .tpg_check_prod_mode_write_protect = 1945 tcm_qla2xxx_check_prod_write_protect, 1946 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only, 1947 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index, 1948 .check_stop_free = tcm_qla2xxx_check_stop_free, 1949 .release_cmd = tcm_qla2xxx_release_cmd, 1950 .close_session = tcm_qla2xxx_close_session, 1951 .sess_get_index = tcm_qla2xxx_sess_get_index, 1952 .sess_get_initiator_sid = NULL, 1953 .write_pending = tcm_qla2xxx_write_pending, 1954 .write_pending_status = tcm_qla2xxx_write_pending_status, 1955 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs, 1956 .get_cmd_state = tcm_qla2xxx_get_cmd_state, 1957 .queue_data_in = tcm_qla2xxx_queue_data_in, 1958 .queue_status = tcm_qla2xxx_queue_status, 1959 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp, 1960 .aborted_task = tcm_qla2xxx_aborted_task, 1961 /* 1962 * Setup function pointers for generic logic in 1963 * target_core_fabric_configfs.c 1964 */ 1965 .fabric_make_wwn = tcm_qla2xxx_npiv_make_lport, 1966 .fabric_drop_wwn = tcm_qla2xxx_npiv_drop_lport, 1967 .fabric_make_tpg = tcm_qla2xxx_npiv_make_tpg, 1968 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg, 1969 .fabric_init_nodeacl = tcm_qla2xxx_init_nodeacl, 1970 1971 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs, 1972 .tfc_tpg_base_attrs = tcm_qla2xxx_npiv_tpg_attrs, 1973 }; 1974 1975 static int tcm_qla2xxx_register_configfs(void) 1976 { 1977 int ret; 1978 1979 pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on " 1980 UTS_RELEASE"\n", QLA2XXX_VERSION, utsname()->sysname, 1981 utsname()->machine); 1982 1983 ret = target_register_template(&tcm_qla2xxx_ops); 1984 if (ret) 1985 return ret; 1986 1987 ret = target_register_template(&tcm_qla2xxx_npiv_ops); 1988 if (ret) 1989 goto out_fabric; 1990 1991 tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free", 1992 WQ_MEM_RECLAIM, 0); 1993 if (!tcm_qla2xxx_free_wq) { 1994 ret = -ENOMEM; 1995 goto out_fabric_npiv; 1996 } 1997 1998 tcm_qla2xxx_cmd_wq = alloc_workqueue("tcm_qla2xxx_cmd", 0, 0); 1999 if (!tcm_qla2xxx_cmd_wq) { 2000 ret = -ENOMEM; 2001 goto out_free_wq; 2002 } 2003 2004 return 0; 2005 2006 out_free_wq: 2007 destroy_workqueue(tcm_qla2xxx_free_wq); 2008 out_fabric_npiv: 2009 target_unregister_template(&tcm_qla2xxx_npiv_ops); 2010 out_fabric: 2011 target_unregister_template(&tcm_qla2xxx_ops); 2012 return ret; 2013 } 2014 2015 static void tcm_qla2xxx_deregister_configfs(void) 2016 { 2017 destroy_workqueue(tcm_qla2xxx_cmd_wq); 2018 destroy_workqueue(tcm_qla2xxx_free_wq); 2019 2020 target_unregister_template(&tcm_qla2xxx_ops); 2021 target_unregister_template(&tcm_qla2xxx_npiv_ops); 2022 } 2023 2024 static int __init tcm_qla2xxx_init(void) 2025 { 2026 int ret; 2027 2028 ret = tcm_qla2xxx_register_configfs(); 2029 if (ret < 0) 2030 return ret; 2031 2032 return 0; 2033 } 2034 2035 static void __exit tcm_qla2xxx_exit(void) 2036 { 2037 tcm_qla2xxx_deregister_configfs(); 2038 } 2039 2040 MODULE_DESCRIPTION("TCM QLA24XX+ series NPIV enabled fabric driver"); 2041 MODULE_LICENSE("GPL"); 2042 module_init(tcm_qla2xxx_init); 2043 module_exit(tcm_qla2xxx_exit); 2044