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 <linux/utsname.h> 29 #include <linux/vmalloc.h> 30 #include <linux/init.h> 31 #include <linux/list.h> 32 #include <linux/slab.h> 33 #include <linux/kthread.h> 34 #include <linux/types.h> 35 #include <linux/string.h> 36 #include <linux/configfs.h> 37 #include <linux/ctype.h> 38 #include <asm/unaligned.h> 39 #include <scsi/scsi.h> 40 #include <scsi/scsi_host.h> 41 #include <scsi/scsi_device.h> 42 #include <scsi/scsi_cmnd.h> 43 #include <target/target_core_base.h> 44 #include <target/target_core_fabric.h> 45 46 #include "qla_def.h" 47 #include "qla_target.h" 48 #include "tcm_qla2xxx.h" 49 50 static struct workqueue_struct *tcm_qla2xxx_free_wq; 51 52 /* 53 * Parse WWN. 54 * If strict, we require lower-case hex and colon separators to be sure 55 * the name is the same as what would be generated by ft_format_wwn() 56 * so the name and wwn are mapped one-to-one. 57 */ 58 static ssize_t tcm_qla2xxx_parse_wwn(const char *name, u64 *wwn, int strict) 59 { 60 const char *cp; 61 char c; 62 u32 nibble; 63 u32 byte = 0; 64 u32 pos = 0; 65 u32 err; 66 67 *wwn = 0; 68 for (cp = name; cp < &name[TCM_QLA2XXX_NAMELEN - 1]; cp++) { 69 c = *cp; 70 if (c == '\n' && cp[1] == '\0') 71 continue; 72 if (strict && pos++ == 2 && byte++ < 7) { 73 pos = 0; 74 if (c == ':') 75 continue; 76 err = 1; 77 goto fail; 78 } 79 if (c == '\0') { 80 err = 2; 81 if (strict && byte != 8) 82 goto fail; 83 return cp - name; 84 } 85 err = 3; 86 if (isdigit(c)) 87 nibble = c - '0'; 88 else if (isxdigit(c) && (islower(c) || !strict)) 89 nibble = tolower(c) - 'a' + 10; 90 else 91 goto fail; 92 *wwn = (*wwn << 4) | nibble; 93 } 94 err = 4; 95 fail: 96 pr_debug("err %u len %zu pos %u byte %u\n", 97 err, cp - name, pos, byte); 98 return -1; 99 } 100 101 static ssize_t tcm_qla2xxx_format_wwn(char *buf, size_t len, u64 wwn) 102 { 103 u8 b[8]; 104 105 put_unaligned_be64(wwn, b); 106 return snprintf(buf, len, 107 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x", 108 b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7]); 109 } 110 111 static char *tcm_qla2xxx_get_fabric_name(void) 112 { 113 return "qla2xxx"; 114 } 115 116 /* 117 * From drivers/scsi/scsi_transport_fc.c:fc_parse_wwn 118 */ 119 static int tcm_qla2xxx_npiv_extract_wwn(const char *ns, u64 *nm) 120 { 121 unsigned int i, j; 122 u8 wwn[8]; 123 124 memset(wwn, 0, sizeof(wwn)); 125 126 /* Validate and store the new name */ 127 for (i = 0, j = 0; i < 16; i++) { 128 int value; 129 130 value = hex_to_bin(*ns++); 131 if (value >= 0) 132 j = (j << 4) | value; 133 else 134 return -EINVAL; 135 136 if (i % 2) { 137 wwn[i/2] = j & 0xff; 138 j = 0; 139 } 140 } 141 142 *nm = wwn_to_u64(wwn); 143 return 0; 144 } 145 146 /* 147 * This parsing logic follows drivers/scsi/scsi_transport_fc.c: 148 * store_fc_host_vport_create() 149 */ 150 static int tcm_qla2xxx_npiv_parse_wwn( 151 const char *name, 152 size_t count, 153 u64 *wwpn, 154 u64 *wwnn) 155 { 156 unsigned int cnt = count; 157 int rc; 158 159 *wwpn = 0; 160 *wwnn = 0; 161 162 /* count may include a LF at end of string */ 163 if (name[cnt-1] == '\n' || name[cnt-1] == 0) 164 cnt--; 165 166 /* validate we have enough characters for WWPN */ 167 if ((cnt != (16+1+16)) || (name[16] != ':')) 168 return -EINVAL; 169 170 rc = tcm_qla2xxx_npiv_extract_wwn(&name[0], wwpn); 171 if (rc != 0) 172 return rc; 173 174 rc = tcm_qla2xxx_npiv_extract_wwn(&name[17], wwnn); 175 if (rc != 0) 176 return rc; 177 178 return 0; 179 } 180 181 static char *tcm_qla2xxx_npiv_get_fabric_name(void) 182 { 183 return "qla2xxx_npiv"; 184 } 185 186 static char *tcm_qla2xxx_get_fabric_wwn(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 struct tcm_qla2xxx_lport *lport = tpg->lport; 191 192 return lport->lport_naa_name; 193 } 194 195 static u16 tcm_qla2xxx_get_tag(struct se_portal_group *se_tpg) 196 { 197 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 198 struct tcm_qla2xxx_tpg, se_tpg); 199 return tpg->lport_tpgt; 200 } 201 202 static int tcm_qla2xxx_check_demo_mode(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.generate_node_acls; 208 } 209 210 static int tcm_qla2xxx_check_demo_mode_cache(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.cache_dynamic_acls; 216 } 217 218 static int tcm_qla2xxx_check_demo_write_protect(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.demo_mode_write_protect; 224 } 225 226 static int tcm_qla2xxx_check_prod_write_protect(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->tpg_attrib.prod_mode_write_protect; 232 } 233 234 static int tcm_qla2xxx_check_demo_mode_login_only(struct se_portal_group *se_tpg) 235 { 236 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 237 struct tcm_qla2xxx_tpg, se_tpg); 238 239 return tpg->tpg_attrib.demo_mode_login_only; 240 } 241 242 static int tcm_qla2xxx_check_prot_fabric_only(struct se_portal_group *se_tpg) 243 { 244 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 245 struct tcm_qla2xxx_tpg, se_tpg); 246 247 return tpg->tpg_attrib.fabric_prot_type; 248 } 249 250 static u32 tcm_qla2xxx_tpg_get_inst_index(struct se_portal_group *se_tpg) 251 { 252 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 253 struct tcm_qla2xxx_tpg, se_tpg); 254 255 return tpg->lport_tpgt; 256 } 257 258 static void tcm_qla2xxx_complete_mcmd(struct work_struct *work) 259 { 260 struct qla_tgt_mgmt_cmd *mcmd = container_of(work, 261 struct qla_tgt_mgmt_cmd, free_work); 262 263 transport_generic_free_cmd(&mcmd->se_cmd, 0); 264 } 265 266 /* 267 * Called from qla_target_template->free_mcmd(), and will call 268 * tcm_qla2xxx_release_cmd() via normal struct target_core_fabric_ops 269 * release callback. qla_hw_data->hardware_lock is expected to be held 270 */ 271 static void tcm_qla2xxx_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd) 272 { 273 INIT_WORK(&mcmd->free_work, tcm_qla2xxx_complete_mcmd); 274 queue_work(tcm_qla2xxx_free_wq, &mcmd->free_work); 275 } 276 277 static void tcm_qla2xxx_complete_free(struct work_struct *work) 278 { 279 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 280 281 cmd->cmd_in_wq = 0; 282 283 WARN_ON(cmd->trc_flags & TRC_CMD_FREE); 284 285 cmd->qpair->tgt_counters.qla_core_ret_sta_ctio++; 286 cmd->trc_flags |= TRC_CMD_FREE; 287 transport_generic_free_cmd(&cmd->se_cmd, 0); 288 } 289 290 /* 291 * Called from qla_target_template->free_cmd(), and will call 292 * tcm_qla2xxx_release_cmd via normal struct target_core_fabric_ops 293 * release callback. qla_hw_data->hardware_lock is expected to be held 294 */ 295 static void tcm_qla2xxx_free_cmd(struct qla_tgt_cmd *cmd) 296 { 297 cmd->qpair->tgt_counters.core_qla_free_cmd++; 298 cmd->cmd_in_wq = 1; 299 300 WARN_ON(cmd->trc_flags & TRC_CMD_DONE); 301 cmd->trc_flags |= TRC_CMD_DONE; 302 303 INIT_WORK(&cmd->work, tcm_qla2xxx_complete_free); 304 queue_work_on(smp_processor_id(), tcm_qla2xxx_free_wq, &cmd->work); 305 } 306 307 /* 308 * Called from struct target_core_fabric_ops->check_stop_free() context 309 */ 310 static int tcm_qla2xxx_check_stop_free(struct se_cmd *se_cmd) 311 { 312 struct qla_tgt_cmd *cmd; 313 314 if ((se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) == 0) { 315 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd); 316 cmd->trc_flags |= TRC_CMD_CHK_STOP; 317 } 318 319 return target_put_sess_cmd(se_cmd); 320 } 321 322 /* tcm_qla2xxx_release_cmd - Callback from TCM Core to release underlying 323 * fabric descriptor @se_cmd command to release 324 */ 325 static void tcm_qla2xxx_release_cmd(struct se_cmd *se_cmd) 326 { 327 struct qla_tgt_cmd *cmd; 328 329 if (se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) { 330 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd, 331 struct qla_tgt_mgmt_cmd, se_cmd); 332 qlt_free_mcmd(mcmd); 333 return; 334 } 335 336 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd); 337 qlt_free_cmd(cmd); 338 } 339 340 static void tcm_qla2xxx_release_session(struct kref *kref) 341 { 342 struct fc_port *sess = container_of(kref, 343 struct fc_port, sess_kref); 344 345 qlt_unreg_sess(sess); 346 } 347 348 static void tcm_qla2xxx_put_sess(struct fc_port *sess) 349 { 350 if (!sess) 351 return; 352 353 assert_spin_locked(&sess->vha->hw->tgt.sess_lock); 354 kref_put(&sess->sess_kref, tcm_qla2xxx_release_session); 355 } 356 357 static void tcm_qla2xxx_close_session(struct se_session *se_sess) 358 { 359 struct fc_port *sess = se_sess->fabric_sess_ptr; 360 struct scsi_qla_host *vha; 361 unsigned long flags; 362 363 BUG_ON(!sess); 364 vha = sess->vha; 365 366 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 367 target_sess_cmd_list_set_waiting(se_sess); 368 tcm_qla2xxx_put_sess(sess); 369 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 370 } 371 372 static u32 tcm_qla2xxx_sess_get_index(struct se_session *se_sess) 373 { 374 return 0; 375 } 376 377 static int tcm_qla2xxx_write_pending(struct se_cmd *se_cmd) 378 { 379 struct qla_tgt_cmd *cmd = container_of(se_cmd, 380 struct qla_tgt_cmd, se_cmd); 381 382 if (cmd->aborted) { 383 /* Cmd can loop during Q-full. tcm_qla2xxx_aborted_task 384 * can get ahead of this cmd. tcm_qla2xxx_aborted_task 385 * already kick start the free. 386 */ 387 pr_debug("write_pending aborted cmd[%p] refcount %d " 388 "transport_state %x, t_state %x, se_cmd_flags %x\n", 389 cmd, kref_read(&cmd->se_cmd.cmd_kref), 390 cmd->se_cmd.transport_state, 391 cmd->se_cmd.t_state, 392 cmd->se_cmd.se_cmd_flags); 393 return 0; 394 } 395 cmd->trc_flags |= TRC_XFR_RDY; 396 cmd->bufflen = se_cmd->data_length; 397 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd); 398 399 cmd->sg_cnt = se_cmd->t_data_nents; 400 cmd->sg = se_cmd->t_data_sg; 401 402 cmd->prot_sg_cnt = se_cmd->t_prot_nents; 403 cmd->prot_sg = se_cmd->t_prot_sg; 404 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size; 405 se_cmd->pi_err = 0; 406 407 /* 408 * qla_target.c:qlt_rdy_to_xfer() will call pci_map_sg() to setup 409 * the SGL mappings into PCIe memory for incoming FCP WRITE data. 410 */ 411 return qlt_rdy_to_xfer(cmd); 412 } 413 414 static int tcm_qla2xxx_write_pending_status(struct se_cmd *se_cmd) 415 { 416 unsigned long flags; 417 /* 418 * Check for WRITE_PENDING status to determine if we need to wait for 419 * CTIO aborts to be posted via hardware in tcm_qla2xxx_handle_data(). 420 */ 421 spin_lock_irqsave(&se_cmd->t_state_lock, flags); 422 if (se_cmd->t_state == TRANSPORT_WRITE_PENDING || 423 se_cmd->t_state == TRANSPORT_COMPLETE_QF_WP) { 424 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags); 425 wait_for_completion_timeout(&se_cmd->t_transport_stop_comp, 426 50); 427 return 0; 428 } 429 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags); 430 431 return 0; 432 } 433 434 static void tcm_qla2xxx_set_default_node_attrs(struct se_node_acl *nacl) 435 { 436 return; 437 } 438 439 static int tcm_qla2xxx_get_cmd_state(struct se_cmd *se_cmd) 440 { 441 if (!(se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB)) { 442 struct qla_tgt_cmd *cmd = container_of(se_cmd, 443 struct qla_tgt_cmd, se_cmd); 444 return cmd->state; 445 } 446 447 return 0; 448 } 449 450 /* 451 * Called from process context in qla_target.c:qlt_do_work() code 452 */ 453 static int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd, 454 unsigned char *cdb, uint32_t data_length, int fcp_task_attr, 455 int data_dir, int bidi) 456 { 457 struct se_cmd *se_cmd = &cmd->se_cmd; 458 struct se_session *se_sess; 459 struct fc_port *sess; 460 #ifdef CONFIG_TCM_QLA2XXX_DEBUG 461 struct se_portal_group *se_tpg; 462 struct tcm_qla2xxx_tpg *tpg; 463 #endif 464 int flags = TARGET_SCF_ACK_KREF; 465 466 if (bidi) 467 flags |= TARGET_SCF_BIDI_OP; 468 469 if (se_cmd->cpuid != WORK_CPU_UNBOUND) 470 flags |= TARGET_SCF_USE_CPUID; 471 472 sess = cmd->sess; 473 if (!sess) { 474 pr_err("Unable to locate struct fc_port from qla_tgt_cmd\n"); 475 return -EINVAL; 476 } 477 478 se_sess = sess->se_sess; 479 if (!se_sess) { 480 pr_err("Unable to locate active struct se_session\n"); 481 return -EINVAL; 482 } 483 484 #ifdef CONFIG_TCM_QLA2XXX_DEBUG 485 se_tpg = se_sess->se_tpg; 486 tpg = container_of(se_tpg, struct tcm_qla2xxx_tpg, se_tpg); 487 if (unlikely(tpg->tpg_attrib.jam_host)) { 488 /* return, and dont run target_submit_cmd,discarding command */ 489 return 0; 490 } 491 #endif 492 493 cmd->qpair->tgt_counters.qla_core_sbt_cmd++; 494 return target_submit_cmd(se_cmd, se_sess, cdb, &cmd->sense_buffer[0], 495 cmd->unpacked_lun, data_length, fcp_task_attr, 496 data_dir, flags); 497 } 498 499 static void tcm_qla2xxx_handle_data_work(struct work_struct *work) 500 { 501 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 502 503 /* 504 * Ensure that the complete FCP WRITE payload has been received. 505 * Otherwise return an exception via CHECK_CONDITION status. 506 */ 507 cmd->cmd_in_wq = 0; 508 509 cmd->qpair->tgt_counters.qla_core_ret_ctio++; 510 if (!cmd->write_data_transferred) { 511 /* 512 * Check if se_cmd has already been aborted via LUN_RESET, and 513 * waiting upon completion in tcm_qla2xxx_write_pending_status() 514 */ 515 if (cmd->se_cmd.transport_state & CMD_T_ABORTED) { 516 complete(&cmd->se_cmd.t_transport_stop_comp); 517 return; 518 } 519 520 switch (cmd->dif_err_code) { 521 case DIF_ERR_GRD: 522 cmd->se_cmd.pi_err = 523 TCM_LOGICAL_BLOCK_GUARD_CHECK_FAILED; 524 break; 525 case DIF_ERR_REF: 526 cmd->se_cmd.pi_err = 527 TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED; 528 break; 529 case DIF_ERR_APP: 530 cmd->se_cmd.pi_err = 531 TCM_LOGICAL_BLOCK_APP_TAG_CHECK_FAILED; 532 break; 533 case DIF_ERR_NONE: 534 default: 535 break; 536 } 537 538 if (cmd->se_cmd.pi_err) 539 transport_generic_request_failure(&cmd->se_cmd, 540 cmd->se_cmd.pi_err); 541 else 542 transport_generic_request_failure(&cmd->se_cmd, 543 TCM_CHECK_CONDITION_ABORT_CMD); 544 545 return; 546 } 547 548 return target_execute_cmd(&cmd->se_cmd); 549 } 550 551 /* 552 * Called from qla_target.c:qlt_do_ctio_completion() 553 */ 554 static void tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd) 555 { 556 cmd->trc_flags |= TRC_DATA_IN; 557 cmd->cmd_in_wq = 1; 558 INIT_WORK(&cmd->work, tcm_qla2xxx_handle_data_work); 559 queue_work_on(smp_processor_id(), tcm_qla2xxx_free_wq, &cmd->work); 560 } 561 562 static int tcm_qla2xxx_chk_dif_tags(uint32_t tag) 563 { 564 return 0; 565 } 566 567 static int tcm_qla2xxx_dif_tags(struct qla_tgt_cmd *cmd, 568 uint16_t *pfw_prot_opts) 569 { 570 struct se_cmd *se_cmd = &cmd->se_cmd; 571 572 if (!(se_cmd->prot_checks & TARGET_DIF_CHECK_GUARD)) 573 *pfw_prot_opts |= PO_DISABLE_GUARD_CHECK; 574 575 if (!(se_cmd->prot_checks & TARGET_DIF_CHECK_APPTAG)) 576 *pfw_prot_opts |= PO_DIS_APP_TAG_VALD; 577 578 return 0; 579 } 580 581 /* 582 * Called from qla_target.c:qlt_issue_task_mgmt() 583 */ 584 static int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *mcmd, u64 lun, 585 uint16_t tmr_func, uint32_t tag) 586 { 587 struct fc_port *sess = mcmd->sess; 588 struct se_cmd *se_cmd = &mcmd->se_cmd; 589 int transl_tmr_func = 0; 590 int flags = TARGET_SCF_ACK_KREF; 591 592 switch (tmr_func) { 593 case QLA_TGT_ABTS: 594 pr_debug("%ld: ABTS received\n", sess->vha->host_no); 595 transl_tmr_func = TMR_ABORT_TASK; 596 flags |= TARGET_SCF_LOOKUP_LUN_FROM_TAG; 597 break; 598 case QLA_TGT_2G_ABORT_TASK: 599 pr_debug("%ld: 2G Abort Task received\n", sess->vha->host_no); 600 transl_tmr_func = TMR_ABORT_TASK; 601 break; 602 case QLA_TGT_CLEAR_ACA: 603 pr_debug("%ld: CLEAR_ACA received\n", sess->vha->host_no); 604 transl_tmr_func = TMR_CLEAR_ACA; 605 break; 606 case QLA_TGT_TARGET_RESET: 607 pr_debug("%ld: TARGET_RESET received\n", sess->vha->host_no); 608 transl_tmr_func = TMR_TARGET_WARM_RESET; 609 break; 610 case QLA_TGT_LUN_RESET: 611 pr_debug("%ld: LUN_RESET received\n", sess->vha->host_no); 612 transl_tmr_func = TMR_LUN_RESET; 613 break; 614 case QLA_TGT_CLEAR_TS: 615 pr_debug("%ld: CLEAR_TS received\n", sess->vha->host_no); 616 transl_tmr_func = TMR_CLEAR_TASK_SET; 617 break; 618 case QLA_TGT_ABORT_TS: 619 pr_debug("%ld: ABORT_TS received\n", sess->vha->host_no); 620 transl_tmr_func = TMR_ABORT_TASK_SET; 621 break; 622 default: 623 pr_debug("%ld: Unknown task mgmt fn 0x%x\n", 624 sess->vha->host_no, tmr_func); 625 return -ENOSYS; 626 } 627 628 return target_submit_tmr(se_cmd, sess->se_sess, NULL, lun, mcmd, 629 transl_tmr_func, GFP_ATOMIC, tag, flags); 630 } 631 632 static struct qla_tgt_cmd *tcm_qla2xxx_find_cmd_by_tag(struct fc_port *sess, 633 uint64_t tag) 634 { 635 struct qla_tgt_cmd *cmd = NULL; 636 struct se_cmd *secmd; 637 unsigned long flags; 638 639 if (!sess->se_sess) 640 return NULL; 641 642 spin_lock_irqsave(&sess->se_sess->sess_cmd_lock, flags); 643 list_for_each_entry(secmd, &sess->se_sess->sess_cmd_list, se_cmd_list) { 644 /* skip task management functions, including tmr->task_cmd */ 645 if (secmd->se_cmd_flags & SCF_SCSI_TMR_CDB) 646 continue; 647 648 if (secmd->tag == tag) { 649 cmd = container_of(secmd, struct qla_tgt_cmd, se_cmd); 650 break; 651 } 652 } 653 spin_unlock_irqrestore(&sess->se_sess->sess_cmd_lock, flags); 654 655 return cmd; 656 } 657 658 static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd) 659 { 660 struct qla_tgt_cmd *cmd = container_of(se_cmd, 661 struct qla_tgt_cmd, se_cmd); 662 663 if (cmd->aborted) { 664 /* Cmd can loop during Q-full. tcm_qla2xxx_aborted_task 665 * can get ahead of this cmd. tcm_qla2xxx_aborted_task 666 * already kick start the free. 667 */ 668 pr_debug("queue_data_in aborted cmd[%p] refcount %d " 669 "transport_state %x, t_state %x, se_cmd_flags %x\n", 670 cmd, kref_read(&cmd->se_cmd.cmd_kref), 671 cmd->se_cmd.transport_state, 672 cmd->se_cmd.t_state, 673 cmd->se_cmd.se_cmd_flags); 674 return 0; 675 } 676 677 cmd->trc_flags |= TRC_XMIT_DATA; 678 cmd->bufflen = se_cmd->data_length; 679 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd); 680 681 cmd->sg_cnt = se_cmd->t_data_nents; 682 cmd->sg = se_cmd->t_data_sg; 683 cmd->offset = 0; 684 685 cmd->prot_sg_cnt = se_cmd->t_prot_nents; 686 cmd->prot_sg = se_cmd->t_prot_sg; 687 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size; 688 se_cmd->pi_err = 0; 689 690 /* 691 * Now queue completed DATA_IN the qla2xxx LLD and response ring 692 */ 693 return qlt_xmit_response(cmd, QLA_TGT_XMIT_DATA|QLA_TGT_XMIT_STATUS, 694 se_cmd->scsi_status); 695 } 696 697 static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd) 698 { 699 struct qla_tgt_cmd *cmd = container_of(se_cmd, 700 struct qla_tgt_cmd, se_cmd); 701 int xmit_type = QLA_TGT_XMIT_STATUS; 702 703 if (cmd->aborted) { 704 /* 705 * Cmd can loop during Q-full. tcm_qla2xxx_aborted_task 706 * can get ahead of this cmd. tcm_qla2xxx_aborted_task 707 * already kick start the free. 708 */ 709 pr_debug( 710 "queue_data_in aborted cmd[%p] refcount %d transport_state %x, t_state %x, se_cmd_flags %x\n", 711 cmd, kref_read(&cmd->se_cmd.cmd_kref), 712 cmd->se_cmd.transport_state, cmd->se_cmd.t_state, 713 cmd->se_cmd.se_cmd_flags); 714 return 0; 715 } 716 cmd->bufflen = se_cmd->data_length; 717 cmd->sg = NULL; 718 cmd->sg_cnt = 0; 719 cmd->offset = 0; 720 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd); 721 if (cmd->trc_flags & TRC_XMIT_STATUS) { 722 pr_crit("Multiple calls for status = %p.\n", cmd); 723 dump_stack(); 724 } 725 cmd->trc_flags |= TRC_XMIT_STATUS; 726 727 if (se_cmd->data_direction == DMA_FROM_DEVICE) { 728 /* 729 * For FCP_READ with CHECK_CONDITION status, clear cmd->bufflen 730 * for qla_tgt_xmit_response LLD code 731 */ 732 if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) { 733 se_cmd->se_cmd_flags &= ~SCF_OVERFLOW_BIT; 734 se_cmd->residual_count = 0; 735 } 736 se_cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT; 737 se_cmd->residual_count += se_cmd->data_length; 738 739 cmd->bufflen = 0; 740 } 741 /* 742 * Now queue status response to qla2xxx LLD code and response ring 743 */ 744 return qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status); 745 } 746 747 static void tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd) 748 { 749 struct se_tmr_req *se_tmr = se_cmd->se_tmr_req; 750 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd, 751 struct qla_tgt_mgmt_cmd, se_cmd); 752 753 pr_debug("queue_tm_rsp: mcmd: %p func: 0x%02x response: 0x%02x\n", 754 mcmd, se_tmr->function, se_tmr->response); 755 /* 756 * Do translation between TCM TM response codes and 757 * QLA2xxx FC TM response codes. 758 */ 759 switch (se_tmr->response) { 760 case TMR_FUNCTION_COMPLETE: 761 mcmd->fc_tm_rsp = FC_TM_SUCCESS; 762 break; 763 case TMR_TASK_DOES_NOT_EXIST: 764 mcmd->fc_tm_rsp = FC_TM_BAD_CMD; 765 break; 766 case TMR_FUNCTION_REJECTED: 767 mcmd->fc_tm_rsp = FC_TM_REJECT; 768 break; 769 case TMR_LUN_DOES_NOT_EXIST: 770 default: 771 mcmd->fc_tm_rsp = FC_TM_FAILED; 772 break; 773 } 774 /* 775 * Queue the TM response to QLA2xxx LLD to build a 776 * CTIO response packet. 777 */ 778 qlt_xmit_tm_rsp(mcmd); 779 } 780 781 static void tcm_qla2xxx_aborted_task(struct se_cmd *se_cmd) 782 { 783 struct qla_tgt_cmd *cmd = container_of(se_cmd, 784 struct qla_tgt_cmd, se_cmd); 785 786 if (qlt_abort_cmd(cmd)) 787 return; 788 } 789 790 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *, 791 struct tcm_qla2xxx_nacl *, struct fc_port *); 792 /* 793 * Expected to be called with struct qla_hw_data->tgt.sess_lock held 794 */ 795 static void tcm_qla2xxx_clear_nacl_from_fcport_map(struct fc_port *sess) 796 { 797 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl; 798 struct se_portal_group *se_tpg = se_nacl->se_tpg; 799 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn; 800 struct tcm_qla2xxx_lport *lport = container_of(se_wwn, 801 struct tcm_qla2xxx_lport, lport_wwn); 802 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl, 803 struct tcm_qla2xxx_nacl, se_node_acl); 804 void *node; 805 806 pr_debug("fc_rport domain: port_id 0x%06x\n", nacl->nport_id); 807 808 node = btree_remove32(&lport->lport_fcport_map, nacl->nport_id); 809 if (WARN_ON(node && (node != se_nacl))) { 810 /* 811 * The nacl no longer matches what we think it should be. 812 * Most likely a new dynamic acl has been added while 813 * someone dropped the hardware lock. It clearly is a 814 * bug elsewhere, but this bit can't make things worse. 815 */ 816 btree_insert32(&lport->lport_fcport_map, nacl->nport_id, 817 node, GFP_ATOMIC); 818 } 819 820 pr_debug("Removed from fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%06x\n", 821 se_nacl, nacl->nport_wwnn, nacl->nport_id); 822 /* 823 * Now clear the se_nacl and session pointers from our HW lport lookup 824 * table mapping for this initiator's fabric S_ID and LOOP_ID entries. 825 * 826 * This is done ahead of callbacks into tcm_qla2xxx_free_session() -> 827 * target_wait_for_sess_cmds() before the session waits for outstanding 828 * I/O to complete, to avoid a race between session shutdown execution 829 * and incoming ATIOs or TMRs picking up a stale se_node_act reference. 830 */ 831 tcm_qla2xxx_clear_sess_lookup(lport, nacl, sess); 832 } 833 834 static void tcm_qla2xxx_shutdown_sess(struct fc_port *sess) 835 { 836 assert_spin_locked(&sess->vha->hw->tgt.sess_lock); 837 target_sess_cmd_list_set_waiting(sess->se_sess); 838 } 839 840 static int tcm_qla2xxx_init_nodeacl(struct se_node_acl *se_nacl, 841 const char *name) 842 { 843 struct tcm_qla2xxx_nacl *nacl = 844 container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 845 u64 wwnn; 846 847 if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0) 848 return -EINVAL; 849 850 nacl->nport_wwnn = wwnn; 851 tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn); 852 853 return 0; 854 } 855 856 /* Start items for tcm_qla2xxx_tpg_attrib_cit */ 857 858 #define DEF_QLA_TPG_ATTRIB(name) \ 859 \ 860 static ssize_t tcm_qla2xxx_tpg_attrib_##name##_show( \ 861 struct config_item *item, char *page) \ 862 { \ 863 struct se_portal_group *se_tpg = attrib_to_tpg(item); \ 864 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \ 865 struct tcm_qla2xxx_tpg, se_tpg); \ 866 \ 867 return sprintf(page, "%u\n", tpg->tpg_attrib.name); \ 868 } \ 869 \ 870 static ssize_t tcm_qla2xxx_tpg_attrib_##name##_store( \ 871 struct config_item *item, const char *page, size_t count) \ 872 { \ 873 struct se_portal_group *se_tpg = attrib_to_tpg(item); \ 874 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \ 875 struct tcm_qla2xxx_tpg, se_tpg); \ 876 struct tcm_qla2xxx_tpg_attrib *a = &tpg->tpg_attrib; \ 877 unsigned long val; \ 878 int ret; \ 879 \ 880 ret = kstrtoul(page, 0, &val); \ 881 if (ret < 0) { \ 882 pr_err("kstrtoul() failed with" \ 883 " ret: %d\n", ret); \ 884 return -EINVAL; \ 885 } \ 886 \ 887 if ((val != 0) && (val != 1)) { \ 888 pr_err("Illegal boolean value %lu\n", val); \ 889 return -EINVAL; \ 890 } \ 891 \ 892 a->name = val; \ 893 \ 894 return count; \ 895 } \ 896 CONFIGFS_ATTR(tcm_qla2xxx_tpg_attrib_, name) 897 898 DEF_QLA_TPG_ATTRIB(generate_node_acls); 899 DEF_QLA_TPG_ATTRIB(cache_dynamic_acls); 900 DEF_QLA_TPG_ATTRIB(demo_mode_write_protect); 901 DEF_QLA_TPG_ATTRIB(prod_mode_write_protect); 902 DEF_QLA_TPG_ATTRIB(demo_mode_login_only); 903 #ifdef CONFIG_TCM_QLA2XXX_DEBUG 904 DEF_QLA_TPG_ATTRIB(jam_host); 905 #endif 906 907 static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = { 908 &tcm_qla2xxx_tpg_attrib_attr_generate_node_acls, 909 &tcm_qla2xxx_tpg_attrib_attr_cache_dynamic_acls, 910 &tcm_qla2xxx_tpg_attrib_attr_demo_mode_write_protect, 911 &tcm_qla2xxx_tpg_attrib_attr_prod_mode_write_protect, 912 &tcm_qla2xxx_tpg_attrib_attr_demo_mode_login_only, 913 #ifdef CONFIG_TCM_QLA2XXX_DEBUG 914 &tcm_qla2xxx_tpg_attrib_attr_jam_host, 915 #endif 916 NULL, 917 }; 918 919 /* End items for tcm_qla2xxx_tpg_attrib_cit */ 920 921 static ssize_t tcm_qla2xxx_tpg_enable_show(struct config_item *item, 922 char *page) 923 { 924 struct se_portal_group *se_tpg = to_tpg(item); 925 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 926 struct tcm_qla2xxx_tpg, se_tpg); 927 928 return snprintf(page, PAGE_SIZE, "%d\n", 929 atomic_read(&tpg->lport_tpg_enabled)); 930 } 931 932 static void tcm_qla2xxx_depend_tpg(struct work_struct *work) 933 { 934 struct tcm_qla2xxx_tpg *base_tpg = container_of(work, 935 struct tcm_qla2xxx_tpg, tpg_base_work); 936 struct se_portal_group *se_tpg = &base_tpg->se_tpg; 937 struct scsi_qla_host *base_vha = base_tpg->lport->qla_vha; 938 939 if (!target_depend_item(&se_tpg->tpg_group.cg_item)) { 940 atomic_set(&base_tpg->lport_tpg_enabled, 1); 941 qlt_enable_vha(base_vha); 942 } 943 complete(&base_tpg->tpg_base_comp); 944 } 945 946 static void tcm_qla2xxx_undepend_tpg(struct work_struct *work) 947 { 948 struct tcm_qla2xxx_tpg *base_tpg = container_of(work, 949 struct tcm_qla2xxx_tpg, tpg_base_work); 950 struct se_portal_group *se_tpg = &base_tpg->se_tpg; 951 struct scsi_qla_host *base_vha = base_tpg->lport->qla_vha; 952 953 if (!qlt_stop_phase1(base_vha->vha_tgt.qla_tgt)) { 954 atomic_set(&base_tpg->lport_tpg_enabled, 0); 955 target_undepend_item(&se_tpg->tpg_group.cg_item); 956 } 957 complete(&base_tpg->tpg_base_comp); 958 } 959 960 static ssize_t tcm_qla2xxx_tpg_enable_store(struct config_item *item, 961 const char *page, size_t count) 962 { 963 struct se_portal_group *se_tpg = to_tpg(item); 964 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 965 struct tcm_qla2xxx_tpg, se_tpg); 966 unsigned long op; 967 int rc; 968 969 rc = kstrtoul(page, 0, &op); 970 if (rc < 0) { 971 pr_err("kstrtoul() returned %d\n", rc); 972 return -EINVAL; 973 } 974 if ((op != 1) && (op != 0)) { 975 pr_err("Illegal value for tpg_enable: %lu\n", op); 976 return -EINVAL; 977 } 978 if (op) { 979 if (atomic_read(&tpg->lport_tpg_enabled)) 980 return -EEXIST; 981 982 INIT_WORK(&tpg->tpg_base_work, tcm_qla2xxx_depend_tpg); 983 } else { 984 if (!atomic_read(&tpg->lport_tpg_enabled)) 985 return count; 986 987 INIT_WORK(&tpg->tpg_base_work, tcm_qla2xxx_undepend_tpg); 988 } 989 init_completion(&tpg->tpg_base_comp); 990 schedule_work(&tpg->tpg_base_work); 991 wait_for_completion(&tpg->tpg_base_comp); 992 993 if (op) { 994 if (!atomic_read(&tpg->lport_tpg_enabled)) 995 return -ENODEV; 996 } else { 997 if (atomic_read(&tpg->lport_tpg_enabled)) 998 return -EPERM; 999 } 1000 return count; 1001 } 1002 1003 static ssize_t tcm_qla2xxx_tpg_dynamic_sessions_show(struct config_item *item, 1004 char *page) 1005 { 1006 return target_show_dynamic_sessions(to_tpg(item), page); 1007 } 1008 1009 static ssize_t tcm_qla2xxx_tpg_fabric_prot_type_store(struct config_item *item, 1010 const char *page, size_t count) 1011 { 1012 struct se_portal_group *se_tpg = to_tpg(item); 1013 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1014 struct tcm_qla2xxx_tpg, se_tpg); 1015 unsigned long val; 1016 int ret = kstrtoul(page, 0, &val); 1017 1018 if (ret) { 1019 pr_err("kstrtoul() returned %d for fabric_prot_type\n", ret); 1020 return ret; 1021 } 1022 if (val != 0 && val != 1 && val != 3) { 1023 pr_err("Invalid qla2xxx fabric_prot_type: %lu\n", val); 1024 return -EINVAL; 1025 } 1026 tpg->tpg_attrib.fabric_prot_type = val; 1027 1028 return count; 1029 } 1030 1031 static ssize_t tcm_qla2xxx_tpg_fabric_prot_type_show(struct config_item *item, 1032 char *page) 1033 { 1034 struct se_portal_group *se_tpg = to_tpg(item); 1035 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1036 struct tcm_qla2xxx_tpg, se_tpg); 1037 1038 return sprintf(page, "%d\n", tpg->tpg_attrib.fabric_prot_type); 1039 } 1040 1041 CONFIGFS_ATTR(tcm_qla2xxx_tpg_, enable); 1042 CONFIGFS_ATTR_RO(tcm_qla2xxx_tpg_, dynamic_sessions); 1043 CONFIGFS_ATTR(tcm_qla2xxx_tpg_, fabric_prot_type); 1044 1045 static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = { 1046 &tcm_qla2xxx_tpg_attr_enable, 1047 &tcm_qla2xxx_tpg_attr_dynamic_sessions, 1048 &tcm_qla2xxx_tpg_attr_fabric_prot_type, 1049 NULL, 1050 }; 1051 1052 static struct se_portal_group *tcm_qla2xxx_make_tpg( 1053 struct se_wwn *wwn, 1054 struct config_group *group, 1055 const char *name) 1056 { 1057 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1058 struct tcm_qla2xxx_lport, lport_wwn); 1059 struct tcm_qla2xxx_tpg *tpg; 1060 unsigned long tpgt; 1061 int ret; 1062 1063 if (strstr(name, "tpgt_") != name) 1064 return ERR_PTR(-EINVAL); 1065 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX) 1066 return ERR_PTR(-EINVAL); 1067 1068 if ((tpgt != 1)) { 1069 pr_err("In non NPIV mode, a single TPG=1 is used for HW port mappings\n"); 1070 return ERR_PTR(-ENOSYS); 1071 } 1072 1073 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL); 1074 if (!tpg) { 1075 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n"); 1076 return ERR_PTR(-ENOMEM); 1077 } 1078 tpg->lport = lport; 1079 tpg->lport_tpgt = tpgt; 1080 /* 1081 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic 1082 * NodeACLs 1083 */ 1084 tpg->tpg_attrib.generate_node_acls = 1; 1085 tpg->tpg_attrib.demo_mode_write_protect = 1; 1086 tpg->tpg_attrib.cache_dynamic_acls = 1; 1087 tpg->tpg_attrib.demo_mode_login_only = 1; 1088 tpg->tpg_attrib.jam_host = 0; 1089 1090 ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP); 1091 if (ret < 0) { 1092 kfree(tpg); 1093 return NULL; 1094 } 1095 1096 lport->tpg_1 = tpg; 1097 1098 return &tpg->se_tpg; 1099 } 1100 1101 static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg) 1102 { 1103 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1104 struct tcm_qla2xxx_tpg, se_tpg); 1105 struct tcm_qla2xxx_lport *lport = tpg->lport; 1106 struct scsi_qla_host *vha = lport->qla_vha; 1107 /* 1108 * Call into qla2x_target.c LLD logic to shutdown the active 1109 * FC Nexuses and disable target mode operation for this qla_hw_data 1110 */ 1111 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stop) 1112 qlt_stop_phase1(vha->vha_tgt.qla_tgt); 1113 1114 core_tpg_deregister(se_tpg); 1115 /* 1116 * Clear local TPG=1 pointer for non NPIV mode. 1117 */ 1118 lport->tpg_1 = NULL; 1119 kfree(tpg); 1120 } 1121 1122 static ssize_t tcm_qla2xxx_npiv_tpg_enable_show(struct config_item *item, 1123 char *page) 1124 { 1125 return tcm_qla2xxx_tpg_enable_show(item, page); 1126 } 1127 1128 static ssize_t tcm_qla2xxx_npiv_tpg_enable_store(struct config_item *item, 1129 const char *page, size_t count) 1130 { 1131 struct se_portal_group *se_tpg = to_tpg(item); 1132 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn; 1133 struct tcm_qla2xxx_lport *lport = container_of(se_wwn, 1134 struct tcm_qla2xxx_lport, lport_wwn); 1135 struct scsi_qla_host *vha = lport->qla_vha; 1136 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1137 struct tcm_qla2xxx_tpg, se_tpg); 1138 unsigned long op; 1139 int rc; 1140 1141 rc = kstrtoul(page, 0, &op); 1142 if (rc < 0) { 1143 pr_err("kstrtoul() returned %d\n", rc); 1144 return -EINVAL; 1145 } 1146 if ((op != 1) && (op != 0)) { 1147 pr_err("Illegal value for tpg_enable: %lu\n", op); 1148 return -EINVAL; 1149 } 1150 if (op) { 1151 if (atomic_read(&tpg->lport_tpg_enabled)) 1152 return -EEXIST; 1153 1154 atomic_set(&tpg->lport_tpg_enabled, 1); 1155 qlt_enable_vha(vha); 1156 } else { 1157 if (!atomic_read(&tpg->lport_tpg_enabled)) 1158 return count; 1159 1160 atomic_set(&tpg->lport_tpg_enabled, 0); 1161 qlt_stop_phase1(vha->vha_tgt.qla_tgt); 1162 } 1163 1164 return count; 1165 } 1166 1167 CONFIGFS_ATTR(tcm_qla2xxx_npiv_tpg_, enable); 1168 1169 static struct configfs_attribute *tcm_qla2xxx_npiv_tpg_attrs[] = { 1170 &tcm_qla2xxx_npiv_tpg_attr_enable, 1171 NULL, 1172 }; 1173 1174 static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg( 1175 struct se_wwn *wwn, 1176 struct config_group *group, 1177 const char *name) 1178 { 1179 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1180 struct tcm_qla2xxx_lport, lport_wwn); 1181 struct tcm_qla2xxx_tpg *tpg; 1182 unsigned long tpgt; 1183 int ret; 1184 1185 if (strstr(name, "tpgt_") != name) 1186 return ERR_PTR(-EINVAL); 1187 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX) 1188 return ERR_PTR(-EINVAL); 1189 1190 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL); 1191 if (!tpg) { 1192 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n"); 1193 return ERR_PTR(-ENOMEM); 1194 } 1195 tpg->lport = lport; 1196 tpg->lport_tpgt = tpgt; 1197 1198 /* 1199 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic 1200 * NodeACLs 1201 */ 1202 tpg->tpg_attrib.generate_node_acls = 1; 1203 tpg->tpg_attrib.demo_mode_write_protect = 1; 1204 tpg->tpg_attrib.cache_dynamic_acls = 1; 1205 tpg->tpg_attrib.demo_mode_login_only = 1; 1206 1207 ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP); 1208 if (ret < 0) { 1209 kfree(tpg); 1210 return NULL; 1211 } 1212 lport->tpg_1 = tpg; 1213 return &tpg->se_tpg; 1214 } 1215 1216 /* 1217 * Expected to be called with struct qla_hw_data->tgt.sess_lock held 1218 */ 1219 static struct fc_port *tcm_qla2xxx_find_sess_by_s_id( 1220 scsi_qla_host_t *vha, 1221 const uint8_t *s_id) 1222 { 1223 struct tcm_qla2xxx_lport *lport; 1224 struct se_node_acl *se_nacl; 1225 struct tcm_qla2xxx_nacl *nacl; 1226 u32 key; 1227 1228 lport = vha->vha_tgt.target_lport_ptr; 1229 if (!lport) { 1230 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1231 dump_stack(); 1232 return NULL; 1233 } 1234 1235 key = sid_to_key(s_id); 1236 pr_debug("find_sess_by_s_id: 0x%06x\n", key); 1237 1238 se_nacl = btree_lookup32(&lport->lport_fcport_map, key); 1239 if (!se_nacl) { 1240 pr_debug("Unable to locate s_id: 0x%06x\n", key); 1241 return NULL; 1242 } 1243 pr_debug("find_sess_by_s_id: located se_nacl: %p, initiatorname: %s\n", 1244 se_nacl, se_nacl->initiatorname); 1245 1246 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1247 if (!nacl->fc_port) { 1248 pr_err("Unable to locate struct fc_port\n"); 1249 return NULL; 1250 } 1251 1252 return nacl->fc_port; 1253 } 1254 1255 /* 1256 * Expected to be called with struct qla_hw_data->tgt.sess_lock held 1257 */ 1258 static void tcm_qla2xxx_set_sess_by_s_id( 1259 struct tcm_qla2xxx_lport *lport, 1260 struct se_node_acl *new_se_nacl, 1261 struct tcm_qla2xxx_nacl *nacl, 1262 struct se_session *se_sess, 1263 struct fc_port *fc_port, 1264 uint8_t *s_id) 1265 { 1266 u32 key; 1267 void *slot; 1268 int rc; 1269 1270 key = sid_to_key(s_id); 1271 pr_debug("set_sess_by_s_id: %06x\n", key); 1272 1273 slot = btree_lookup32(&lport->lport_fcport_map, key); 1274 if (!slot) { 1275 if (new_se_nacl) { 1276 pr_debug("Setting up new fc_port entry to new_se_nacl\n"); 1277 nacl->nport_id = key; 1278 rc = btree_insert32(&lport->lport_fcport_map, key, 1279 new_se_nacl, GFP_ATOMIC); 1280 if (rc) 1281 printk(KERN_ERR "Unable to insert s_id into fcport_map: %06x\n", 1282 (int)key); 1283 } else { 1284 pr_debug("Wiping nonexisting fc_port entry\n"); 1285 } 1286 1287 fc_port->se_sess = se_sess; 1288 nacl->fc_port = fc_port; 1289 return; 1290 } 1291 1292 if (nacl->fc_port) { 1293 if (new_se_nacl == NULL) { 1294 pr_debug("Clearing existing nacl->fc_port and fc_port entry\n"); 1295 btree_remove32(&lport->lport_fcport_map, key); 1296 nacl->fc_port = NULL; 1297 return; 1298 } 1299 pr_debug("Replacing existing nacl->fc_port and fc_port entry\n"); 1300 btree_update32(&lport->lport_fcport_map, key, new_se_nacl); 1301 fc_port->se_sess = se_sess; 1302 nacl->fc_port = fc_port; 1303 return; 1304 } 1305 1306 if (new_se_nacl == NULL) { 1307 pr_debug("Clearing existing fc_port entry\n"); 1308 btree_remove32(&lport->lport_fcport_map, key); 1309 return; 1310 } 1311 1312 pr_debug("Replacing existing fc_port entry w/o active nacl->fc_port\n"); 1313 btree_update32(&lport->lport_fcport_map, key, new_se_nacl); 1314 fc_port->se_sess = se_sess; 1315 nacl->fc_port = fc_port; 1316 1317 pr_debug("Setup nacl->fc_port %p by s_id for se_nacl: %p, initiatorname: %s\n", 1318 nacl->fc_port, new_se_nacl, new_se_nacl->initiatorname); 1319 } 1320 1321 /* 1322 * Expected to be called with struct qla_hw_data->tgt.sess_lock held 1323 */ 1324 static struct fc_port *tcm_qla2xxx_find_sess_by_loop_id( 1325 scsi_qla_host_t *vha, 1326 const uint16_t loop_id) 1327 { 1328 struct tcm_qla2xxx_lport *lport; 1329 struct se_node_acl *se_nacl; 1330 struct tcm_qla2xxx_nacl *nacl; 1331 struct tcm_qla2xxx_fc_loopid *fc_loopid; 1332 1333 lport = vha->vha_tgt.target_lport_ptr; 1334 if (!lport) { 1335 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1336 dump_stack(); 1337 return NULL; 1338 } 1339 1340 pr_debug("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id); 1341 1342 fc_loopid = lport->lport_loopid_map + loop_id; 1343 se_nacl = fc_loopid->se_nacl; 1344 if (!se_nacl) { 1345 pr_debug("Unable to locate se_nacl by loop_id: 0x%04x\n", 1346 loop_id); 1347 return NULL; 1348 } 1349 1350 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1351 1352 if (!nacl->fc_port) { 1353 pr_err("Unable to locate struct fc_port\n"); 1354 return NULL; 1355 } 1356 1357 return nacl->fc_port; 1358 } 1359 1360 /* 1361 * Expected to be called with struct qla_hw_data->tgt.sess_lock held 1362 */ 1363 static void tcm_qla2xxx_set_sess_by_loop_id( 1364 struct tcm_qla2xxx_lport *lport, 1365 struct se_node_acl *new_se_nacl, 1366 struct tcm_qla2xxx_nacl *nacl, 1367 struct se_session *se_sess, 1368 struct fc_port *fc_port, 1369 uint16_t loop_id) 1370 { 1371 struct se_node_acl *saved_nacl; 1372 struct tcm_qla2xxx_fc_loopid *fc_loopid; 1373 1374 pr_debug("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id); 1375 1376 fc_loopid = &((struct tcm_qla2xxx_fc_loopid *) 1377 lport->lport_loopid_map)[loop_id]; 1378 1379 saved_nacl = fc_loopid->se_nacl; 1380 if (!saved_nacl) { 1381 pr_debug("Setting up new fc_loopid->se_nacl to new_se_nacl\n"); 1382 fc_loopid->se_nacl = new_se_nacl; 1383 if (fc_port->se_sess != se_sess) 1384 fc_port->se_sess = se_sess; 1385 if (nacl->fc_port != fc_port) 1386 nacl->fc_port = fc_port; 1387 return; 1388 } 1389 1390 if (nacl->fc_port) { 1391 if (new_se_nacl == NULL) { 1392 pr_debug("Clearing nacl->fc_port and fc_loopid->se_nacl\n"); 1393 fc_loopid->se_nacl = NULL; 1394 nacl->fc_port = NULL; 1395 return; 1396 } 1397 1398 pr_debug("Replacing existing nacl->fc_port and fc_loopid->se_nacl\n"); 1399 fc_loopid->se_nacl = new_se_nacl; 1400 if (fc_port->se_sess != se_sess) 1401 fc_port->se_sess = se_sess; 1402 if (nacl->fc_port != fc_port) 1403 nacl->fc_port = fc_port; 1404 return; 1405 } 1406 1407 if (new_se_nacl == NULL) { 1408 pr_debug("Clearing fc_loopid->se_nacl\n"); 1409 fc_loopid->se_nacl = NULL; 1410 return; 1411 } 1412 1413 pr_debug("Replacing existing fc_loopid->se_nacl w/o active nacl->fc_port\n"); 1414 fc_loopid->se_nacl = new_se_nacl; 1415 if (fc_port->se_sess != se_sess) 1416 fc_port->se_sess = se_sess; 1417 if (nacl->fc_port != fc_port) 1418 nacl->fc_port = fc_port; 1419 1420 pr_debug("Setup nacl->fc_port %p by loop_id for se_nacl: %p, initiatorname: %s\n", 1421 nacl->fc_port, new_se_nacl, new_se_nacl->initiatorname); 1422 } 1423 1424 /* 1425 * Should always be called with qla_hw_data->tgt.sess_lock held. 1426 */ 1427 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *lport, 1428 struct tcm_qla2xxx_nacl *nacl, struct fc_port *sess) 1429 { 1430 struct se_session *se_sess = sess->se_sess; 1431 unsigned char be_sid[3]; 1432 1433 be_sid[0] = sess->d_id.b.domain; 1434 be_sid[1] = sess->d_id.b.area; 1435 be_sid[2] = sess->d_id.b.al_pa; 1436 1437 tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess, 1438 sess, be_sid); 1439 tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess, 1440 sess, sess->loop_id); 1441 } 1442 1443 static void tcm_qla2xxx_free_session(struct fc_port *sess) 1444 { 1445 struct qla_tgt *tgt = sess->tgt; 1446 struct qla_hw_data *ha = tgt->ha; 1447 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev); 1448 struct se_session *se_sess; 1449 struct tcm_qla2xxx_lport *lport; 1450 1451 BUG_ON(in_interrupt()); 1452 1453 se_sess = sess->se_sess; 1454 if (!se_sess) { 1455 pr_err("struct fc_port->se_sess is NULL\n"); 1456 dump_stack(); 1457 return; 1458 } 1459 1460 lport = vha->vha_tgt.target_lport_ptr; 1461 if (!lport) { 1462 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1463 dump_stack(); 1464 return; 1465 } 1466 target_wait_for_sess_cmds(se_sess); 1467 1468 transport_deregister_session_configfs(sess->se_sess); 1469 transport_deregister_session(sess->se_sess); 1470 } 1471 1472 static int tcm_qla2xxx_session_cb(struct se_portal_group *se_tpg, 1473 struct se_session *se_sess, void *p) 1474 { 1475 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1476 struct tcm_qla2xxx_tpg, se_tpg); 1477 struct tcm_qla2xxx_lport *lport = tpg->lport; 1478 struct qla_hw_data *ha = lport->qla_vha->hw; 1479 struct se_node_acl *se_nacl = se_sess->se_node_acl; 1480 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl, 1481 struct tcm_qla2xxx_nacl, se_node_acl); 1482 struct fc_port *qlat_sess = p; 1483 uint16_t loop_id = qlat_sess->loop_id; 1484 unsigned long flags; 1485 unsigned char be_sid[3]; 1486 1487 be_sid[0] = qlat_sess->d_id.b.domain; 1488 be_sid[1] = qlat_sess->d_id.b.area; 1489 be_sid[2] = qlat_sess->d_id.b.al_pa; 1490 1491 /* 1492 * And now setup se_nacl and session pointers into HW lport internal 1493 * mappings for fabric S_ID and LOOP_ID. 1494 */ 1495 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1496 tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl, 1497 se_sess, qlat_sess, be_sid); 1498 tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl, 1499 se_sess, qlat_sess, loop_id); 1500 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1501 1502 return 0; 1503 } 1504 1505 /* 1506 * Called via qlt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl() 1507 * to locate struct se_node_acl 1508 */ 1509 static int tcm_qla2xxx_check_initiator_node_acl( 1510 scsi_qla_host_t *vha, 1511 unsigned char *fc_wwpn, 1512 struct fc_port *qlat_sess) 1513 { 1514 struct qla_hw_data *ha = vha->hw; 1515 struct tcm_qla2xxx_lport *lport; 1516 struct tcm_qla2xxx_tpg *tpg; 1517 struct se_session *se_sess; 1518 unsigned char port_name[36]; 1519 int num_tags = (ha->cur_fw_xcb_count) ? ha->cur_fw_xcb_count : 1520 TCM_QLA2XXX_DEFAULT_TAGS; 1521 1522 lport = vha->vha_tgt.target_lport_ptr; 1523 if (!lport) { 1524 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1525 dump_stack(); 1526 return -EINVAL; 1527 } 1528 /* 1529 * Locate the TPG=1 reference.. 1530 */ 1531 tpg = lport->tpg_1; 1532 if (!tpg) { 1533 pr_err("Unable to lcoate struct tcm_qla2xxx_lport->tpg_1\n"); 1534 return -EINVAL; 1535 } 1536 /* 1537 * Format the FCP Initiator port_name into colon seperated values to 1538 * match the format by tcm_qla2xxx explict ConfigFS NodeACLs. 1539 */ 1540 memset(&port_name, 0, 36); 1541 snprintf(port_name, sizeof(port_name), "%8phC", fc_wwpn); 1542 /* 1543 * Locate our struct se_node_acl either from an explict NodeACL created 1544 * via ConfigFS, or via running in TPG demo mode. 1545 */ 1546 se_sess = target_alloc_session(&tpg->se_tpg, num_tags, 1547 sizeof(struct qla_tgt_cmd), 1548 TARGET_PROT_ALL, port_name, 1549 qlat_sess, tcm_qla2xxx_session_cb); 1550 if (IS_ERR(se_sess)) 1551 return PTR_ERR(se_sess); 1552 1553 return 0; 1554 } 1555 1556 static void tcm_qla2xxx_update_sess(struct fc_port *sess, port_id_t s_id, 1557 uint16_t loop_id, bool conf_compl_supported) 1558 { 1559 struct qla_tgt *tgt = sess->tgt; 1560 struct qla_hw_data *ha = tgt->ha; 1561 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev); 1562 struct tcm_qla2xxx_lport *lport = vha->vha_tgt.target_lport_ptr; 1563 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl; 1564 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl, 1565 struct tcm_qla2xxx_nacl, se_node_acl); 1566 u32 key; 1567 1568 1569 if (sess->loop_id != loop_id || sess->d_id.b24 != s_id.b24) 1570 pr_info("Updating session %p from port %8phC loop_id %d -> %d s_id %x:%x:%x -> %x:%x:%x\n", 1571 sess, sess->port_name, 1572 sess->loop_id, loop_id, sess->d_id.b.domain, 1573 sess->d_id.b.area, sess->d_id.b.al_pa, s_id.b.domain, 1574 s_id.b.area, s_id.b.al_pa); 1575 1576 if (sess->loop_id != loop_id) { 1577 /* 1578 * Because we can shuffle loop IDs around and we 1579 * update different sessions non-atomically, we might 1580 * have overwritten this session's old loop ID 1581 * already, and we might end up overwriting some other 1582 * session that will be updated later. So we have to 1583 * be extra careful and we can't warn about those things... 1584 */ 1585 if (lport->lport_loopid_map[sess->loop_id].se_nacl == se_nacl) 1586 lport->lport_loopid_map[sess->loop_id].se_nacl = NULL; 1587 1588 lport->lport_loopid_map[loop_id].se_nacl = se_nacl; 1589 1590 sess->loop_id = loop_id; 1591 } 1592 1593 if (sess->d_id.b24 != s_id.b24) { 1594 key = (((u32) sess->d_id.b.domain << 16) | 1595 ((u32) sess->d_id.b.area << 8) | 1596 ((u32) sess->d_id.b.al_pa)); 1597 1598 if (btree_lookup32(&lport->lport_fcport_map, key)) 1599 WARN(btree_remove32(&lport->lport_fcport_map, key) != 1600 se_nacl, "Found wrong se_nacl when updating s_id %x:%x:%x\n", 1601 sess->d_id.b.domain, sess->d_id.b.area, 1602 sess->d_id.b.al_pa); 1603 else 1604 WARN(1, "No lport_fcport_map entry for s_id %x:%x:%x\n", 1605 sess->d_id.b.domain, sess->d_id.b.area, 1606 sess->d_id.b.al_pa); 1607 1608 key = (((u32) s_id.b.domain << 16) | 1609 ((u32) s_id.b.area << 8) | 1610 ((u32) s_id.b.al_pa)); 1611 1612 if (btree_lookup32(&lport->lport_fcport_map, key)) { 1613 WARN(1, "Already have lport_fcport_map entry for s_id %x:%x:%x\n", 1614 s_id.b.domain, s_id.b.area, s_id.b.al_pa); 1615 btree_update32(&lport->lport_fcport_map, key, se_nacl); 1616 } else { 1617 btree_insert32(&lport->lport_fcport_map, key, se_nacl, 1618 GFP_ATOMIC); 1619 } 1620 1621 sess->d_id = s_id; 1622 nacl->nport_id = key; 1623 } 1624 1625 sess->conf_compl_supported = conf_compl_supported; 1626 1627 /* Reset logout parameters to default */ 1628 sess->logout_on_delete = 1; 1629 sess->keep_nport_handle = 0; 1630 } 1631 1632 /* 1633 * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path. 1634 */ 1635 static struct qla_tgt_func_tmpl tcm_qla2xxx_template = { 1636 .find_cmd_by_tag = tcm_qla2xxx_find_cmd_by_tag, 1637 .handle_cmd = tcm_qla2xxx_handle_cmd, 1638 .handle_data = tcm_qla2xxx_handle_data, 1639 .handle_tmr = tcm_qla2xxx_handle_tmr, 1640 .free_cmd = tcm_qla2xxx_free_cmd, 1641 .free_mcmd = tcm_qla2xxx_free_mcmd, 1642 .free_session = tcm_qla2xxx_free_session, 1643 .update_sess = tcm_qla2xxx_update_sess, 1644 .check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl, 1645 .find_sess_by_s_id = tcm_qla2xxx_find_sess_by_s_id, 1646 .find_sess_by_loop_id = tcm_qla2xxx_find_sess_by_loop_id, 1647 .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map, 1648 .put_sess = tcm_qla2xxx_put_sess, 1649 .shutdown_sess = tcm_qla2xxx_shutdown_sess, 1650 .get_dif_tags = tcm_qla2xxx_dif_tags, 1651 .chk_dif_tags = tcm_qla2xxx_chk_dif_tags, 1652 }; 1653 1654 static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport) 1655 { 1656 int rc; 1657 1658 rc = btree_init32(&lport->lport_fcport_map); 1659 if (rc) { 1660 pr_err("Unable to initialize lport->lport_fcport_map btree\n"); 1661 return rc; 1662 } 1663 1664 lport->lport_loopid_map = 1665 vzalloc(array_size(65536, 1666 sizeof(struct tcm_qla2xxx_fc_loopid))); 1667 if (!lport->lport_loopid_map) { 1668 pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n", 1669 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536); 1670 btree_destroy32(&lport->lport_fcport_map); 1671 return -ENOMEM; 1672 } 1673 pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n", 1674 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536); 1675 return 0; 1676 } 1677 1678 static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha, 1679 void *target_lport_ptr, 1680 u64 npiv_wwpn, u64 npiv_wwnn) 1681 { 1682 struct qla_hw_data *ha = vha->hw; 1683 struct tcm_qla2xxx_lport *lport = 1684 (struct tcm_qla2xxx_lport *)target_lport_ptr; 1685 /* 1686 * Setup tgt_ops, local pointer to vha and target_lport_ptr 1687 */ 1688 ha->tgt.tgt_ops = &tcm_qla2xxx_template; 1689 vha->vha_tgt.target_lport_ptr = target_lport_ptr; 1690 lport->qla_vha = vha; 1691 1692 return 0; 1693 } 1694 1695 static struct se_wwn *tcm_qla2xxx_make_lport( 1696 struct target_fabric_configfs *tf, 1697 struct config_group *group, 1698 const char *name) 1699 { 1700 struct tcm_qla2xxx_lport *lport; 1701 u64 wwpn; 1702 int ret = -ENODEV; 1703 1704 if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0) 1705 return ERR_PTR(-EINVAL); 1706 1707 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL); 1708 if (!lport) { 1709 pr_err("Unable to allocate struct tcm_qla2xxx_lport\n"); 1710 return ERR_PTR(-ENOMEM); 1711 } 1712 lport->lport_wwpn = wwpn; 1713 tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN, 1714 wwpn); 1715 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) wwpn); 1716 1717 ret = tcm_qla2xxx_init_lport(lport); 1718 if (ret != 0) 1719 goto out; 1720 1721 ret = qlt_lport_register(lport, wwpn, 0, 0, 1722 tcm_qla2xxx_lport_register_cb); 1723 if (ret != 0) 1724 goto out_lport; 1725 1726 return &lport->lport_wwn; 1727 out_lport: 1728 vfree(lport->lport_loopid_map); 1729 btree_destroy32(&lport->lport_fcport_map); 1730 out: 1731 kfree(lport); 1732 return ERR_PTR(ret); 1733 } 1734 1735 static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn) 1736 { 1737 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1738 struct tcm_qla2xxx_lport, lport_wwn); 1739 struct scsi_qla_host *vha = lport->qla_vha; 1740 struct se_node_acl *node; 1741 u32 key = 0; 1742 1743 /* 1744 * Call into qla2x_target.c LLD logic to complete the 1745 * shutdown of struct qla_tgt after the call to 1746 * qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above.. 1747 */ 1748 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stopped) 1749 qlt_stop_phase2(vha->vha_tgt.qla_tgt); 1750 1751 qlt_lport_deregister(vha); 1752 1753 vfree(lport->lport_loopid_map); 1754 btree_for_each_safe32(&lport->lport_fcport_map, key, node) 1755 btree_remove32(&lport->lport_fcport_map, key); 1756 btree_destroy32(&lport->lport_fcport_map); 1757 kfree(lport); 1758 } 1759 1760 static int tcm_qla2xxx_lport_register_npiv_cb(struct scsi_qla_host *base_vha, 1761 void *target_lport_ptr, 1762 u64 npiv_wwpn, u64 npiv_wwnn) 1763 { 1764 struct fc_vport *vport; 1765 struct Scsi_Host *sh = base_vha->host; 1766 struct scsi_qla_host *npiv_vha; 1767 struct tcm_qla2xxx_lport *lport = 1768 (struct tcm_qla2xxx_lport *)target_lport_ptr; 1769 struct tcm_qla2xxx_lport *base_lport = 1770 (struct tcm_qla2xxx_lport *)base_vha->vha_tgt.target_lport_ptr; 1771 struct fc_vport_identifiers vport_id; 1772 1773 if (qla_ini_mode_enabled(base_vha)) { 1774 pr_err("qla2xxx base_vha not enabled for target mode\n"); 1775 return -EPERM; 1776 } 1777 1778 if (!base_lport || !base_lport->tpg_1 || 1779 !atomic_read(&base_lport->tpg_1->lport_tpg_enabled)) { 1780 pr_err("qla2xxx base_lport or tpg_1 not available\n"); 1781 return -EPERM; 1782 } 1783 1784 memset(&vport_id, 0, sizeof(vport_id)); 1785 vport_id.port_name = npiv_wwpn; 1786 vport_id.node_name = npiv_wwnn; 1787 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR; 1788 vport_id.vport_type = FC_PORTTYPE_NPIV; 1789 vport_id.disable = false; 1790 1791 vport = fc_vport_create(sh, 0, &vport_id); 1792 if (!vport) { 1793 pr_err("fc_vport_create failed for qla2xxx_npiv\n"); 1794 return -ENODEV; 1795 } 1796 /* 1797 * Setup local pointer to NPIV vhba + target_lport_ptr 1798 */ 1799 npiv_vha = (struct scsi_qla_host *)vport->dd_data; 1800 npiv_vha->vha_tgt.target_lport_ptr = target_lport_ptr; 1801 lport->qla_vha = npiv_vha; 1802 scsi_host_get(npiv_vha->host); 1803 return 0; 1804 } 1805 1806 1807 static struct se_wwn *tcm_qla2xxx_npiv_make_lport( 1808 struct target_fabric_configfs *tf, 1809 struct config_group *group, 1810 const char *name) 1811 { 1812 struct tcm_qla2xxx_lport *lport; 1813 u64 phys_wwpn, npiv_wwpn, npiv_wwnn; 1814 char *p, tmp[128]; 1815 int ret; 1816 1817 snprintf(tmp, 128, "%s", name); 1818 1819 p = strchr(tmp, '@'); 1820 if (!p) { 1821 pr_err("Unable to locate NPIV '@' separator\n"); 1822 return ERR_PTR(-EINVAL); 1823 } 1824 *p++ = '\0'; 1825 1826 if (tcm_qla2xxx_parse_wwn(tmp, &phys_wwpn, 1) < 0) 1827 return ERR_PTR(-EINVAL); 1828 1829 if (tcm_qla2xxx_npiv_parse_wwn(p, strlen(p)+1, 1830 &npiv_wwpn, &npiv_wwnn) < 0) 1831 return ERR_PTR(-EINVAL); 1832 1833 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL); 1834 if (!lport) { 1835 pr_err("Unable to allocate struct tcm_qla2xxx_lport for NPIV\n"); 1836 return ERR_PTR(-ENOMEM); 1837 } 1838 lport->lport_npiv_wwpn = npiv_wwpn; 1839 lport->lport_npiv_wwnn = npiv_wwnn; 1840 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) npiv_wwpn); 1841 1842 ret = tcm_qla2xxx_init_lport(lport); 1843 if (ret != 0) 1844 goto out; 1845 1846 ret = qlt_lport_register(lport, phys_wwpn, npiv_wwpn, npiv_wwnn, 1847 tcm_qla2xxx_lport_register_npiv_cb); 1848 if (ret != 0) 1849 goto out_lport; 1850 1851 return &lport->lport_wwn; 1852 out_lport: 1853 vfree(lport->lport_loopid_map); 1854 btree_destroy32(&lport->lport_fcport_map); 1855 out: 1856 kfree(lport); 1857 return ERR_PTR(ret); 1858 } 1859 1860 static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn) 1861 { 1862 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1863 struct tcm_qla2xxx_lport, lport_wwn); 1864 struct scsi_qla_host *npiv_vha = lport->qla_vha; 1865 struct qla_hw_data *ha = npiv_vha->hw; 1866 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 1867 1868 scsi_host_put(npiv_vha->host); 1869 /* 1870 * Notify libfc that we want to release the vha->fc_vport 1871 */ 1872 fc_vport_terminate(npiv_vha->fc_vport); 1873 scsi_host_put(base_vha->host); 1874 kfree(lport); 1875 } 1876 1877 1878 static ssize_t tcm_qla2xxx_wwn_version_show(struct config_item *item, 1879 char *page) 1880 { 1881 return sprintf(page, 1882 "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s on %s\n", 1883 QLA2XXX_VERSION, utsname()->sysname, 1884 utsname()->machine, utsname()->release); 1885 } 1886 1887 CONFIGFS_ATTR_RO(tcm_qla2xxx_wwn_, version); 1888 1889 static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = { 1890 &tcm_qla2xxx_wwn_attr_version, 1891 NULL, 1892 }; 1893 1894 static const struct target_core_fabric_ops tcm_qla2xxx_ops = { 1895 .module = THIS_MODULE, 1896 .name = "qla2xxx", 1897 .node_acl_size = sizeof(struct tcm_qla2xxx_nacl), 1898 /* 1899 * XXX: Limit assumes single page per scatter-gather-list entry. 1900 * Current maximum is ~4.9 MB per se_cmd->t_data_sg with PAGE_SIZE=4096 1901 */ 1902 .max_data_sg_nents = 1200, 1903 .get_fabric_name = tcm_qla2xxx_get_fabric_name, 1904 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn, 1905 .tpg_get_tag = tcm_qla2xxx_get_tag, 1906 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode, 1907 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache, 1908 .tpg_check_demo_mode_write_protect = 1909 tcm_qla2xxx_check_demo_write_protect, 1910 .tpg_check_prod_mode_write_protect = 1911 tcm_qla2xxx_check_prod_write_protect, 1912 .tpg_check_prot_fabric_only = tcm_qla2xxx_check_prot_fabric_only, 1913 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only, 1914 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index, 1915 .check_stop_free = tcm_qla2xxx_check_stop_free, 1916 .release_cmd = tcm_qla2xxx_release_cmd, 1917 .close_session = tcm_qla2xxx_close_session, 1918 .sess_get_index = tcm_qla2xxx_sess_get_index, 1919 .sess_get_initiator_sid = NULL, 1920 .write_pending = tcm_qla2xxx_write_pending, 1921 .write_pending_status = tcm_qla2xxx_write_pending_status, 1922 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs, 1923 .get_cmd_state = tcm_qla2xxx_get_cmd_state, 1924 .queue_data_in = tcm_qla2xxx_queue_data_in, 1925 .queue_status = tcm_qla2xxx_queue_status, 1926 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp, 1927 .aborted_task = tcm_qla2xxx_aborted_task, 1928 /* 1929 * Setup function pointers for generic logic in 1930 * target_core_fabric_configfs.c 1931 */ 1932 .fabric_make_wwn = tcm_qla2xxx_make_lport, 1933 .fabric_drop_wwn = tcm_qla2xxx_drop_lport, 1934 .fabric_make_tpg = tcm_qla2xxx_make_tpg, 1935 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg, 1936 .fabric_init_nodeacl = tcm_qla2xxx_init_nodeacl, 1937 1938 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs, 1939 .tfc_tpg_base_attrs = tcm_qla2xxx_tpg_attrs, 1940 .tfc_tpg_attrib_attrs = tcm_qla2xxx_tpg_attrib_attrs, 1941 }; 1942 1943 static const struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = { 1944 .module = THIS_MODULE, 1945 .name = "qla2xxx_npiv", 1946 .node_acl_size = sizeof(struct tcm_qla2xxx_nacl), 1947 .get_fabric_name = tcm_qla2xxx_npiv_get_fabric_name, 1948 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn, 1949 .tpg_get_tag = tcm_qla2xxx_get_tag, 1950 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode, 1951 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache, 1952 .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_demo_mode, 1953 .tpg_check_prod_mode_write_protect = 1954 tcm_qla2xxx_check_prod_write_protect, 1955 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only, 1956 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index, 1957 .check_stop_free = tcm_qla2xxx_check_stop_free, 1958 .release_cmd = tcm_qla2xxx_release_cmd, 1959 .close_session = tcm_qla2xxx_close_session, 1960 .sess_get_index = tcm_qla2xxx_sess_get_index, 1961 .sess_get_initiator_sid = NULL, 1962 .write_pending = tcm_qla2xxx_write_pending, 1963 .write_pending_status = tcm_qla2xxx_write_pending_status, 1964 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs, 1965 .get_cmd_state = tcm_qla2xxx_get_cmd_state, 1966 .queue_data_in = tcm_qla2xxx_queue_data_in, 1967 .queue_status = tcm_qla2xxx_queue_status, 1968 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp, 1969 .aborted_task = tcm_qla2xxx_aborted_task, 1970 /* 1971 * Setup function pointers for generic logic in 1972 * target_core_fabric_configfs.c 1973 */ 1974 .fabric_make_wwn = tcm_qla2xxx_npiv_make_lport, 1975 .fabric_drop_wwn = tcm_qla2xxx_npiv_drop_lport, 1976 .fabric_make_tpg = tcm_qla2xxx_npiv_make_tpg, 1977 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg, 1978 .fabric_init_nodeacl = tcm_qla2xxx_init_nodeacl, 1979 1980 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs, 1981 .tfc_tpg_base_attrs = tcm_qla2xxx_npiv_tpg_attrs, 1982 }; 1983 1984 static int tcm_qla2xxx_register_configfs(void) 1985 { 1986 int ret; 1987 1988 pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on %s\n", 1989 QLA2XXX_VERSION, utsname()->sysname, 1990 utsname()->machine, utsname()->release); 1991 1992 ret = target_register_template(&tcm_qla2xxx_ops); 1993 if (ret) 1994 return ret; 1995 1996 ret = target_register_template(&tcm_qla2xxx_npiv_ops); 1997 if (ret) 1998 goto out_fabric; 1999 2000 tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free", 2001 WQ_MEM_RECLAIM, 0); 2002 if (!tcm_qla2xxx_free_wq) { 2003 ret = -ENOMEM; 2004 goto out_fabric_npiv; 2005 } 2006 2007 return 0; 2008 2009 out_fabric_npiv: 2010 target_unregister_template(&tcm_qla2xxx_npiv_ops); 2011 out_fabric: 2012 target_unregister_template(&tcm_qla2xxx_ops); 2013 return ret; 2014 } 2015 2016 static void tcm_qla2xxx_deregister_configfs(void) 2017 { 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