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->cmd_flags & BIT_16); 286 287 cmd->vha->tgt_counters.qla_core_ret_sta_ctio++; 288 cmd->cmd_flags |= BIT_16; 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 BUG_ON(cmd->cmd_flags & BIT_20); 303 cmd->cmd_flags |= BIT_20; 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->cmd_flags |= BIT_14; 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 int tcm_qla2xxx_shutdown_session(struct se_session *se_sess) 343 { 344 struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr; 345 struct scsi_qla_host *vha; 346 unsigned long flags; 347 348 BUG_ON(!sess); 349 vha = sess->vha; 350 351 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 352 target_sess_cmd_list_set_waiting(se_sess); 353 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 354 355 return 1; 356 } 357 358 static void tcm_qla2xxx_close_session(struct se_session *se_sess) 359 { 360 struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr; 361 struct scsi_qla_host *vha; 362 unsigned long flags; 363 364 BUG_ON(!sess); 365 vha = sess->vha; 366 367 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 368 qlt_unreg_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,cmd->se_cmd.cmd_kref.refcount.counter, 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->cmd_flags |= BIT_3; 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 qla_tgt_sess *sess; 460 int flags = TARGET_SCF_ACK_KREF; 461 462 if (bidi) 463 flags |= TARGET_SCF_BIDI_OP; 464 465 if (se_cmd->cpuid != WORK_CPU_UNBOUND) 466 flags |= TARGET_SCF_USE_CPUID; 467 468 sess = cmd->sess; 469 if (!sess) { 470 pr_err("Unable to locate struct qla_tgt_sess from qla_tgt_cmd\n"); 471 return -EINVAL; 472 } 473 474 se_sess = sess->se_sess; 475 if (!se_sess) { 476 pr_err("Unable to locate active struct se_session\n"); 477 return -EINVAL; 478 } 479 480 cmd->vha->tgt_counters.qla_core_sbt_cmd++; 481 return target_submit_cmd(se_cmd, se_sess, cdb, &cmd->sense_buffer[0], 482 cmd->unpacked_lun, data_length, fcp_task_attr, 483 data_dir, flags); 484 } 485 486 static void tcm_qla2xxx_handle_data_work(struct work_struct *work) 487 { 488 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 489 unsigned long flags; 490 491 /* 492 * Ensure that the complete FCP WRITE payload has been received. 493 * Otherwise return an exception via CHECK_CONDITION status. 494 */ 495 cmd->cmd_in_wq = 0; 496 497 spin_lock_irqsave(&cmd->cmd_lock, flags); 498 cmd->cmd_flags |= CMD_FLAG_DATA_WORK; 499 if (cmd->aborted) { 500 cmd->cmd_flags |= CMD_FLAG_DATA_WORK_FREE; 501 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 502 503 tcm_qla2xxx_free_cmd(cmd); 504 return; 505 } 506 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 507 508 cmd->vha->tgt_counters.qla_core_ret_ctio++; 509 if (!cmd->write_data_transferred) { 510 /* 511 * Check if se_cmd has already been aborted via LUN_RESET, and 512 * waiting upon completion in tcm_qla2xxx_write_pending_status() 513 */ 514 if (cmd->se_cmd.transport_state & CMD_T_ABORTED) { 515 complete(&cmd->se_cmd.t_transport_stop_comp); 516 return; 517 } 518 519 if (cmd->se_cmd.pi_err) 520 transport_generic_request_failure(&cmd->se_cmd, 521 cmd->se_cmd.pi_err); 522 else 523 transport_generic_request_failure(&cmd->se_cmd, 524 TCM_CHECK_CONDITION_ABORT_CMD); 525 526 return; 527 } 528 529 return target_execute_cmd(&cmd->se_cmd); 530 } 531 532 /* 533 * Called from qla_target.c:qlt_do_ctio_completion() 534 */ 535 static void tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd) 536 { 537 cmd->cmd_flags |= BIT_10; 538 cmd->cmd_in_wq = 1; 539 INIT_WORK(&cmd->work, tcm_qla2xxx_handle_data_work); 540 queue_work_on(smp_processor_id(), tcm_qla2xxx_free_wq, &cmd->work); 541 } 542 543 static void tcm_qla2xxx_handle_dif_work(struct work_struct *work) 544 { 545 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 546 547 /* take an extra kref to prevent cmd free too early. 548 * need to wait for SCSI status/check condition to 549 * finish responding generate by transport_generic_request_failure. 550 */ 551 kref_get(&cmd->se_cmd.cmd_kref); 552 transport_generic_request_failure(&cmd->se_cmd, cmd->se_cmd.pi_err); 553 } 554 555 /* 556 * Called from qla_target.c:qlt_do_ctio_completion() 557 */ 558 static void tcm_qla2xxx_handle_dif_err(struct qla_tgt_cmd *cmd) 559 { 560 INIT_WORK(&cmd->work, tcm_qla2xxx_handle_dif_work); 561 queue_work(tcm_qla2xxx_free_wq, &cmd->work); 562 } 563 564 /* 565 * Called from qla_target.c:qlt_issue_task_mgmt() 566 */ 567 static int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *mcmd, uint32_t lun, 568 uint8_t tmr_func, uint32_t tag) 569 { 570 struct qla_tgt_sess *sess = mcmd->sess; 571 struct se_cmd *se_cmd = &mcmd->se_cmd; 572 573 return target_submit_tmr(se_cmd, sess->se_sess, NULL, lun, mcmd, 574 tmr_func, GFP_ATOMIC, tag, TARGET_SCF_ACK_KREF); 575 } 576 577 static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd) 578 { 579 struct qla_tgt_cmd *cmd = container_of(se_cmd, 580 struct qla_tgt_cmd, se_cmd); 581 582 if (cmd->aborted) { 583 /* Cmd can loop during Q-full. tcm_qla2xxx_aborted_task 584 * can get ahead of this cmd. tcm_qla2xxx_aborted_task 585 * already kick start the free. 586 */ 587 pr_debug("queue_data_in aborted cmd[%p] refcount %d " 588 "transport_state %x, t_state %x, se_cmd_flags %x\n", 589 cmd,cmd->se_cmd.cmd_kref.refcount.counter, 590 cmd->se_cmd.transport_state, 591 cmd->se_cmd.t_state, 592 cmd->se_cmd.se_cmd_flags); 593 return 0; 594 } 595 596 cmd->cmd_flags |= BIT_4; 597 cmd->bufflen = se_cmd->data_length; 598 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd); 599 600 cmd->sg_cnt = se_cmd->t_data_nents; 601 cmd->sg = se_cmd->t_data_sg; 602 cmd->offset = 0; 603 604 cmd->prot_sg_cnt = se_cmd->t_prot_nents; 605 cmd->prot_sg = se_cmd->t_prot_sg; 606 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size; 607 se_cmd->pi_err = 0; 608 609 /* 610 * Now queue completed DATA_IN the qla2xxx LLD and response ring 611 */ 612 return qlt_xmit_response(cmd, QLA_TGT_XMIT_DATA|QLA_TGT_XMIT_STATUS, 613 se_cmd->scsi_status); 614 } 615 616 static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd) 617 { 618 struct qla_tgt_cmd *cmd = container_of(se_cmd, 619 struct qla_tgt_cmd, se_cmd); 620 int xmit_type = QLA_TGT_XMIT_STATUS; 621 622 cmd->bufflen = se_cmd->data_length; 623 cmd->sg = NULL; 624 cmd->sg_cnt = 0; 625 cmd->offset = 0; 626 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd); 627 if (cmd->cmd_flags & BIT_5) { 628 pr_crit("Bit_5 already set for cmd = %p.\n", cmd); 629 dump_stack(); 630 } 631 cmd->cmd_flags |= BIT_5; 632 633 if (se_cmd->data_direction == DMA_FROM_DEVICE) { 634 /* 635 * For FCP_READ with CHECK_CONDITION status, clear cmd->bufflen 636 * for qla_tgt_xmit_response LLD code 637 */ 638 if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) { 639 se_cmd->se_cmd_flags &= ~SCF_OVERFLOW_BIT; 640 se_cmd->residual_count = 0; 641 } 642 se_cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT; 643 se_cmd->residual_count += se_cmd->data_length; 644 645 cmd->bufflen = 0; 646 } 647 /* 648 * Now queue status response to qla2xxx LLD code and response ring 649 */ 650 return qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status); 651 } 652 653 static void tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd) 654 { 655 struct se_tmr_req *se_tmr = se_cmd->se_tmr_req; 656 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd, 657 struct qla_tgt_mgmt_cmd, se_cmd); 658 659 pr_debug("queue_tm_rsp: mcmd: %p func: 0x%02x response: 0x%02x\n", 660 mcmd, se_tmr->function, se_tmr->response); 661 /* 662 * Do translation between TCM TM response codes and 663 * QLA2xxx FC TM response codes. 664 */ 665 switch (se_tmr->response) { 666 case TMR_FUNCTION_COMPLETE: 667 mcmd->fc_tm_rsp = FC_TM_SUCCESS; 668 break; 669 case TMR_TASK_DOES_NOT_EXIST: 670 mcmd->fc_tm_rsp = FC_TM_BAD_CMD; 671 break; 672 case TMR_FUNCTION_REJECTED: 673 mcmd->fc_tm_rsp = FC_TM_REJECT; 674 break; 675 case TMR_LUN_DOES_NOT_EXIST: 676 default: 677 mcmd->fc_tm_rsp = FC_TM_FAILED; 678 break; 679 } 680 /* 681 * Queue the TM response to QLA2xxx LLD to build a 682 * CTIO response packet. 683 */ 684 qlt_xmit_tm_rsp(mcmd); 685 } 686 687 688 #define DATA_WORK_NOT_FREE(_flags) \ 689 (( _flags & (CMD_FLAG_DATA_WORK|CMD_FLAG_DATA_WORK_FREE)) == \ 690 CMD_FLAG_DATA_WORK) 691 static void tcm_qla2xxx_aborted_task(struct se_cmd *se_cmd) 692 { 693 struct qla_tgt_cmd *cmd = container_of(se_cmd, 694 struct qla_tgt_cmd, se_cmd); 695 unsigned long flags; 696 697 if (qlt_abort_cmd(cmd)) 698 return; 699 700 spin_lock_irqsave(&cmd->cmd_lock, flags); 701 if ((cmd->state == QLA_TGT_STATE_NEW)|| 702 ((cmd->state == QLA_TGT_STATE_DATA_IN) && 703 DATA_WORK_NOT_FREE(cmd->cmd_flags)) ) { 704 705 cmd->cmd_flags |= CMD_FLAG_DATA_WORK_FREE; 706 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 707 /* Cmd have not reached firmware. 708 * Use this trigger to free it. */ 709 tcm_qla2xxx_free_cmd(cmd); 710 return; 711 } 712 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 713 return; 714 715 } 716 717 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *, 718 struct tcm_qla2xxx_nacl *, struct qla_tgt_sess *); 719 /* 720 * Expected to be called with struct qla_hw_data->tgt.sess_lock held 721 */ 722 static void tcm_qla2xxx_clear_nacl_from_fcport_map(struct qla_tgt_sess *sess) 723 { 724 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl; 725 struct se_portal_group *se_tpg = se_nacl->se_tpg; 726 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn; 727 struct tcm_qla2xxx_lport *lport = container_of(se_wwn, 728 struct tcm_qla2xxx_lport, lport_wwn); 729 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl, 730 struct tcm_qla2xxx_nacl, se_node_acl); 731 void *node; 732 733 pr_debug("fc_rport domain: port_id 0x%06x\n", nacl->nport_id); 734 735 node = btree_remove32(&lport->lport_fcport_map, nacl->nport_id); 736 if (WARN_ON(node && (node != se_nacl))) { 737 /* 738 * The nacl no longer matches what we think it should be. 739 * Most likely a new dynamic acl has been added while 740 * someone dropped the hardware lock. It clearly is a 741 * bug elsewhere, but this bit can't make things worse. 742 */ 743 btree_insert32(&lport->lport_fcport_map, nacl->nport_id, 744 node, GFP_ATOMIC); 745 } 746 747 pr_debug("Removed from fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%06x\n", 748 se_nacl, nacl->nport_wwnn, nacl->nport_id); 749 /* 750 * Now clear the se_nacl and session pointers from our HW lport lookup 751 * table mapping for this initiator's fabric S_ID and LOOP_ID entries. 752 * 753 * This is done ahead of callbacks into tcm_qla2xxx_free_session() -> 754 * target_wait_for_sess_cmds() before the session waits for outstanding 755 * I/O to complete, to avoid a race between session shutdown execution 756 * and incoming ATIOs or TMRs picking up a stale se_node_act reference. 757 */ 758 tcm_qla2xxx_clear_sess_lookup(lport, nacl, sess); 759 } 760 761 static void tcm_qla2xxx_release_session(struct kref *kref) 762 { 763 struct se_session *se_sess = container_of(kref, 764 struct se_session, sess_kref); 765 766 qlt_unreg_sess(se_sess->fabric_sess_ptr); 767 } 768 769 static void tcm_qla2xxx_put_sess(struct qla_tgt_sess *sess) 770 { 771 if (!sess) 772 return; 773 774 assert_spin_locked(&sess->vha->hw->tgt.sess_lock); 775 kref_put(&sess->se_sess->sess_kref, tcm_qla2xxx_release_session); 776 } 777 778 static void tcm_qla2xxx_shutdown_sess(struct qla_tgt_sess *sess) 779 { 780 assert_spin_locked(&sess->vha->hw->tgt.sess_lock); 781 target_sess_cmd_list_set_waiting(sess->se_sess); 782 } 783 784 static int tcm_qla2xxx_init_nodeacl(struct se_node_acl *se_nacl, 785 const char *name) 786 { 787 struct tcm_qla2xxx_nacl *nacl = 788 container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 789 u64 wwnn; 790 791 if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0) 792 return -EINVAL; 793 794 nacl->nport_wwnn = wwnn; 795 tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn); 796 797 return 0; 798 } 799 800 /* Start items for tcm_qla2xxx_tpg_attrib_cit */ 801 802 #define DEF_QLA_TPG_ATTRIB(name) \ 803 \ 804 static ssize_t tcm_qla2xxx_tpg_attrib_##name##_show( \ 805 struct config_item *item, char *page) \ 806 { \ 807 struct se_portal_group *se_tpg = attrib_to_tpg(item); \ 808 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \ 809 struct tcm_qla2xxx_tpg, se_tpg); \ 810 \ 811 return sprintf(page, "%u\n", tpg->tpg_attrib.name); \ 812 } \ 813 \ 814 static ssize_t tcm_qla2xxx_tpg_attrib_##name##_store( \ 815 struct config_item *item, const char *page, size_t count) \ 816 { \ 817 struct se_portal_group *se_tpg = attrib_to_tpg(item); \ 818 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \ 819 struct tcm_qla2xxx_tpg, se_tpg); \ 820 struct tcm_qla2xxx_tpg_attrib *a = &tpg->tpg_attrib; \ 821 unsigned long val; \ 822 int ret; \ 823 \ 824 ret = kstrtoul(page, 0, &val); \ 825 if (ret < 0) { \ 826 pr_err("kstrtoul() failed with" \ 827 " ret: %d\n", ret); \ 828 return -EINVAL; \ 829 } \ 830 \ 831 if ((val != 0) && (val != 1)) { \ 832 pr_err("Illegal boolean value %lu\n", val); \ 833 return -EINVAL; \ 834 } \ 835 \ 836 a->name = val; \ 837 \ 838 return count; \ 839 } \ 840 CONFIGFS_ATTR(tcm_qla2xxx_tpg_attrib_, name) 841 842 DEF_QLA_TPG_ATTRIB(generate_node_acls); 843 DEF_QLA_TPG_ATTRIB(cache_dynamic_acls); 844 DEF_QLA_TPG_ATTRIB(demo_mode_write_protect); 845 DEF_QLA_TPG_ATTRIB(prod_mode_write_protect); 846 DEF_QLA_TPG_ATTRIB(demo_mode_login_only); 847 848 static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = { 849 &tcm_qla2xxx_tpg_attrib_attr_generate_node_acls, 850 &tcm_qla2xxx_tpg_attrib_attr_cache_dynamic_acls, 851 &tcm_qla2xxx_tpg_attrib_attr_demo_mode_write_protect, 852 &tcm_qla2xxx_tpg_attrib_attr_prod_mode_write_protect, 853 &tcm_qla2xxx_tpg_attrib_attr_demo_mode_login_only, 854 NULL, 855 }; 856 857 /* End items for tcm_qla2xxx_tpg_attrib_cit */ 858 859 static ssize_t tcm_qla2xxx_tpg_enable_show(struct config_item *item, 860 char *page) 861 { 862 struct se_portal_group *se_tpg = to_tpg(item); 863 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 864 struct tcm_qla2xxx_tpg, se_tpg); 865 866 return snprintf(page, PAGE_SIZE, "%d\n", 867 atomic_read(&tpg->lport_tpg_enabled)); 868 } 869 870 static void tcm_qla2xxx_depend_tpg(struct work_struct *work) 871 { 872 struct tcm_qla2xxx_tpg *base_tpg = container_of(work, 873 struct tcm_qla2xxx_tpg, tpg_base_work); 874 struct se_portal_group *se_tpg = &base_tpg->se_tpg; 875 struct scsi_qla_host *base_vha = base_tpg->lport->qla_vha; 876 877 if (!target_depend_item(&se_tpg->tpg_group.cg_item)) { 878 atomic_set(&base_tpg->lport_tpg_enabled, 1); 879 qlt_enable_vha(base_vha); 880 } 881 complete(&base_tpg->tpg_base_comp); 882 } 883 884 static void tcm_qla2xxx_undepend_tpg(struct work_struct *work) 885 { 886 struct tcm_qla2xxx_tpg *base_tpg = container_of(work, 887 struct tcm_qla2xxx_tpg, tpg_base_work); 888 struct se_portal_group *se_tpg = &base_tpg->se_tpg; 889 struct scsi_qla_host *base_vha = base_tpg->lport->qla_vha; 890 891 if (!qlt_stop_phase1(base_vha->vha_tgt.qla_tgt)) { 892 atomic_set(&base_tpg->lport_tpg_enabled, 0); 893 target_undepend_item(&se_tpg->tpg_group.cg_item); 894 } 895 complete(&base_tpg->tpg_base_comp); 896 } 897 898 static ssize_t tcm_qla2xxx_tpg_enable_store(struct config_item *item, 899 const char *page, size_t count) 900 { 901 struct se_portal_group *se_tpg = to_tpg(item); 902 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 903 struct tcm_qla2xxx_tpg, se_tpg); 904 unsigned long op; 905 int rc; 906 907 rc = kstrtoul(page, 0, &op); 908 if (rc < 0) { 909 pr_err("kstrtoul() returned %d\n", rc); 910 return -EINVAL; 911 } 912 if ((op != 1) && (op != 0)) { 913 pr_err("Illegal value for tpg_enable: %lu\n", op); 914 return -EINVAL; 915 } 916 if (op) { 917 if (atomic_read(&tpg->lport_tpg_enabled)) 918 return -EEXIST; 919 920 INIT_WORK(&tpg->tpg_base_work, tcm_qla2xxx_depend_tpg); 921 } else { 922 if (!atomic_read(&tpg->lport_tpg_enabled)) 923 return count; 924 925 INIT_WORK(&tpg->tpg_base_work, tcm_qla2xxx_undepend_tpg); 926 } 927 init_completion(&tpg->tpg_base_comp); 928 schedule_work(&tpg->tpg_base_work); 929 wait_for_completion(&tpg->tpg_base_comp); 930 931 if (op) { 932 if (!atomic_read(&tpg->lport_tpg_enabled)) 933 return -ENODEV; 934 } else { 935 if (atomic_read(&tpg->lport_tpg_enabled)) 936 return -EPERM; 937 } 938 return count; 939 } 940 941 static ssize_t tcm_qla2xxx_tpg_dynamic_sessions_show(struct config_item *item, 942 char *page) 943 { 944 return target_show_dynamic_sessions(to_tpg(item), page); 945 } 946 947 static ssize_t tcm_qla2xxx_tpg_fabric_prot_type_store(struct config_item *item, 948 const char *page, size_t count) 949 { 950 struct se_portal_group *se_tpg = to_tpg(item); 951 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 952 struct tcm_qla2xxx_tpg, se_tpg); 953 unsigned long val; 954 int ret = kstrtoul(page, 0, &val); 955 956 if (ret) { 957 pr_err("kstrtoul() returned %d for fabric_prot_type\n", ret); 958 return ret; 959 } 960 if (val != 0 && val != 1 && val != 3) { 961 pr_err("Invalid qla2xxx fabric_prot_type: %lu\n", val); 962 return -EINVAL; 963 } 964 tpg->tpg_attrib.fabric_prot_type = val; 965 966 return count; 967 } 968 969 static ssize_t tcm_qla2xxx_tpg_fabric_prot_type_show(struct config_item *item, 970 char *page) 971 { 972 struct se_portal_group *se_tpg = to_tpg(item); 973 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 974 struct tcm_qla2xxx_tpg, se_tpg); 975 976 return sprintf(page, "%d\n", tpg->tpg_attrib.fabric_prot_type); 977 } 978 979 CONFIGFS_ATTR(tcm_qla2xxx_tpg_, enable); 980 CONFIGFS_ATTR_RO(tcm_qla2xxx_tpg_, dynamic_sessions); 981 CONFIGFS_ATTR(tcm_qla2xxx_tpg_, fabric_prot_type); 982 983 static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = { 984 &tcm_qla2xxx_tpg_attr_enable, 985 &tcm_qla2xxx_tpg_attr_dynamic_sessions, 986 &tcm_qla2xxx_tpg_attr_fabric_prot_type, 987 NULL, 988 }; 989 990 static struct se_portal_group *tcm_qla2xxx_make_tpg( 991 struct se_wwn *wwn, 992 struct config_group *group, 993 const char *name) 994 { 995 struct tcm_qla2xxx_lport *lport = container_of(wwn, 996 struct tcm_qla2xxx_lport, lport_wwn); 997 struct tcm_qla2xxx_tpg *tpg; 998 unsigned long tpgt; 999 int ret; 1000 1001 if (strstr(name, "tpgt_") != name) 1002 return ERR_PTR(-EINVAL); 1003 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX) 1004 return ERR_PTR(-EINVAL); 1005 1006 if ((tpgt != 1)) { 1007 pr_err("In non NPIV mode, a single TPG=1 is used for HW port mappings\n"); 1008 return ERR_PTR(-ENOSYS); 1009 } 1010 1011 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL); 1012 if (!tpg) { 1013 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n"); 1014 return ERR_PTR(-ENOMEM); 1015 } 1016 tpg->lport = lport; 1017 tpg->lport_tpgt = tpgt; 1018 /* 1019 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic 1020 * NodeACLs 1021 */ 1022 tpg->tpg_attrib.generate_node_acls = 1; 1023 tpg->tpg_attrib.demo_mode_write_protect = 1; 1024 tpg->tpg_attrib.cache_dynamic_acls = 1; 1025 tpg->tpg_attrib.demo_mode_login_only = 1; 1026 1027 ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP); 1028 if (ret < 0) { 1029 kfree(tpg); 1030 return NULL; 1031 } 1032 1033 lport->tpg_1 = tpg; 1034 1035 return &tpg->se_tpg; 1036 } 1037 1038 static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg) 1039 { 1040 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1041 struct tcm_qla2xxx_tpg, se_tpg); 1042 struct tcm_qla2xxx_lport *lport = tpg->lport; 1043 struct scsi_qla_host *vha = lport->qla_vha; 1044 /* 1045 * Call into qla2x_target.c LLD logic to shutdown the active 1046 * FC Nexuses and disable target mode operation for this qla_hw_data 1047 */ 1048 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stop) 1049 qlt_stop_phase1(vha->vha_tgt.qla_tgt); 1050 1051 core_tpg_deregister(se_tpg); 1052 /* 1053 * Clear local TPG=1 pointer for non NPIV mode. 1054 */ 1055 lport->tpg_1 = NULL; 1056 kfree(tpg); 1057 } 1058 1059 static ssize_t tcm_qla2xxx_npiv_tpg_enable_show(struct config_item *item, 1060 char *page) 1061 { 1062 return tcm_qla2xxx_tpg_enable_show(item, page); 1063 } 1064 1065 static ssize_t tcm_qla2xxx_npiv_tpg_enable_store(struct config_item *item, 1066 const char *page, size_t count) 1067 { 1068 struct se_portal_group *se_tpg = to_tpg(item); 1069 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn; 1070 struct tcm_qla2xxx_lport *lport = container_of(se_wwn, 1071 struct tcm_qla2xxx_lport, lport_wwn); 1072 struct scsi_qla_host *vha = lport->qla_vha; 1073 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1074 struct tcm_qla2xxx_tpg, se_tpg); 1075 unsigned long op; 1076 int rc; 1077 1078 rc = kstrtoul(page, 0, &op); 1079 if (rc < 0) { 1080 pr_err("kstrtoul() returned %d\n", rc); 1081 return -EINVAL; 1082 } 1083 if ((op != 1) && (op != 0)) { 1084 pr_err("Illegal value for tpg_enable: %lu\n", op); 1085 return -EINVAL; 1086 } 1087 if (op) { 1088 if (atomic_read(&tpg->lport_tpg_enabled)) 1089 return -EEXIST; 1090 1091 atomic_set(&tpg->lport_tpg_enabled, 1); 1092 qlt_enable_vha(vha); 1093 } else { 1094 if (!atomic_read(&tpg->lport_tpg_enabled)) 1095 return count; 1096 1097 atomic_set(&tpg->lport_tpg_enabled, 0); 1098 qlt_stop_phase1(vha->vha_tgt.qla_tgt); 1099 } 1100 1101 return count; 1102 } 1103 1104 CONFIGFS_ATTR(tcm_qla2xxx_npiv_tpg_, enable); 1105 1106 static struct configfs_attribute *tcm_qla2xxx_npiv_tpg_attrs[] = { 1107 &tcm_qla2xxx_npiv_tpg_attr_enable, 1108 NULL, 1109 }; 1110 1111 static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg( 1112 struct se_wwn *wwn, 1113 struct config_group *group, 1114 const char *name) 1115 { 1116 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1117 struct tcm_qla2xxx_lport, lport_wwn); 1118 struct tcm_qla2xxx_tpg *tpg; 1119 unsigned long tpgt; 1120 int ret; 1121 1122 if (strstr(name, "tpgt_") != name) 1123 return ERR_PTR(-EINVAL); 1124 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX) 1125 return ERR_PTR(-EINVAL); 1126 1127 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL); 1128 if (!tpg) { 1129 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n"); 1130 return ERR_PTR(-ENOMEM); 1131 } 1132 tpg->lport = lport; 1133 tpg->lport_tpgt = tpgt; 1134 1135 /* 1136 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic 1137 * NodeACLs 1138 */ 1139 tpg->tpg_attrib.generate_node_acls = 1; 1140 tpg->tpg_attrib.demo_mode_write_protect = 1; 1141 tpg->tpg_attrib.cache_dynamic_acls = 1; 1142 tpg->tpg_attrib.demo_mode_login_only = 1; 1143 1144 ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP); 1145 if (ret < 0) { 1146 kfree(tpg); 1147 return NULL; 1148 } 1149 lport->tpg_1 = tpg; 1150 return &tpg->se_tpg; 1151 } 1152 1153 /* 1154 * Expected to be called with struct qla_hw_data->tgt.sess_lock held 1155 */ 1156 static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_s_id( 1157 scsi_qla_host_t *vha, 1158 const uint8_t *s_id) 1159 { 1160 struct tcm_qla2xxx_lport *lport; 1161 struct se_node_acl *se_nacl; 1162 struct tcm_qla2xxx_nacl *nacl; 1163 u32 key; 1164 1165 lport = vha->vha_tgt.target_lport_ptr; 1166 if (!lport) { 1167 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1168 dump_stack(); 1169 return NULL; 1170 } 1171 1172 key = sid_to_key(s_id); 1173 pr_debug("find_sess_by_s_id: 0x%06x\n", key); 1174 1175 se_nacl = btree_lookup32(&lport->lport_fcport_map, key); 1176 if (!se_nacl) { 1177 pr_debug("Unable to locate s_id: 0x%06x\n", key); 1178 return NULL; 1179 } 1180 pr_debug("find_sess_by_s_id: located se_nacl: %p, initiatorname: %s\n", 1181 se_nacl, se_nacl->initiatorname); 1182 1183 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1184 if (!nacl->qla_tgt_sess) { 1185 pr_err("Unable to locate struct qla_tgt_sess\n"); 1186 return NULL; 1187 } 1188 1189 return nacl->qla_tgt_sess; 1190 } 1191 1192 /* 1193 * Expected to be called with struct qla_hw_data->tgt.sess_lock held 1194 */ 1195 static void tcm_qla2xxx_set_sess_by_s_id( 1196 struct tcm_qla2xxx_lport *lport, 1197 struct se_node_acl *new_se_nacl, 1198 struct tcm_qla2xxx_nacl *nacl, 1199 struct se_session *se_sess, 1200 struct qla_tgt_sess *qla_tgt_sess, 1201 uint8_t *s_id) 1202 { 1203 u32 key; 1204 void *slot; 1205 int rc; 1206 1207 key = sid_to_key(s_id); 1208 pr_debug("set_sess_by_s_id: %06x\n", key); 1209 1210 slot = btree_lookup32(&lport->lport_fcport_map, key); 1211 if (!slot) { 1212 if (new_se_nacl) { 1213 pr_debug("Setting up new fc_port entry to new_se_nacl\n"); 1214 nacl->nport_id = key; 1215 rc = btree_insert32(&lport->lport_fcport_map, key, 1216 new_se_nacl, GFP_ATOMIC); 1217 if (rc) 1218 printk(KERN_ERR "Unable to insert s_id into fcport_map: %06x\n", 1219 (int)key); 1220 } else { 1221 pr_debug("Wiping nonexisting fc_port entry\n"); 1222 } 1223 1224 qla_tgt_sess->se_sess = se_sess; 1225 nacl->qla_tgt_sess = qla_tgt_sess; 1226 return; 1227 } 1228 1229 if (nacl->qla_tgt_sess) { 1230 if (new_se_nacl == NULL) { 1231 pr_debug("Clearing existing nacl->qla_tgt_sess and fc_port entry\n"); 1232 btree_remove32(&lport->lport_fcport_map, key); 1233 nacl->qla_tgt_sess = NULL; 1234 return; 1235 } 1236 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_port entry\n"); 1237 btree_update32(&lport->lport_fcport_map, key, new_se_nacl); 1238 qla_tgt_sess->se_sess = se_sess; 1239 nacl->qla_tgt_sess = qla_tgt_sess; 1240 return; 1241 } 1242 1243 if (new_se_nacl == NULL) { 1244 pr_debug("Clearing existing fc_port entry\n"); 1245 btree_remove32(&lport->lport_fcport_map, key); 1246 return; 1247 } 1248 1249 pr_debug("Replacing existing fc_port entry w/o active nacl->qla_tgt_sess\n"); 1250 btree_update32(&lport->lport_fcport_map, key, new_se_nacl); 1251 qla_tgt_sess->se_sess = se_sess; 1252 nacl->qla_tgt_sess = qla_tgt_sess; 1253 1254 pr_debug("Setup nacl->qla_tgt_sess %p by s_id for se_nacl: %p, initiatorname: %s\n", 1255 nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname); 1256 } 1257 1258 /* 1259 * Expected to be called with struct qla_hw_data->tgt.sess_lock held 1260 */ 1261 static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_loop_id( 1262 scsi_qla_host_t *vha, 1263 const uint16_t loop_id) 1264 { 1265 struct tcm_qla2xxx_lport *lport; 1266 struct se_node_acl *se_nacl; 1267 struct tcm_qla2xxx_nacl *nacl; 1268 struct tcm_qla2xxx_fc_loopid *fc_loopid; 1269 1270 lport = vha->vha_tgt.target_lport_ptr; 1271 if (!lport) { 1272 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1273 dump_stack(); 1274 return NULL; 1275 } 1276 1277 pr_debug("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id); 1278 1279 fc_loopid = lport->lport_loopid_map + loop_id; 1280 se_nacl = fc_loopid->se_nacl; 1281 if (!se_nacl) { 1282 pr_debug("Unable to locate se_nacl by loop_id: 0x%04x\n", 1283 loop_id); 1284 return NULL; 1285 } 1286 1287 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1288 1289 if (!nacl->qla_tgt_sess) { 1290 pr_err("Unable to locate struct qla_tgt_sess\n"); 1291 return NULL; 1292 } 1293 1294 return nacl->qla_tgt_sess; 1295 } 1296 1297 /* 1298 * Expected to be called with struct qla_hw_data->tgt.sess_lock held 1299 */ 1300 static void tcm_qla2xxx_set_sess_by_loop_id( 1301 struct tcm_qla2xxx_lport *lport, 1302 struct se_node_acl *new_se_nacl, 1303 struct tcm_qla2xxx_nacl *nacl, 1304 struct se_session *se_sess, 1305 struct qla_tgt_sess *qla_tgt_sess, 1306 uint16_t loop_id) 1307 { 1308 struct se_node_acl *saved_nacl; 1309 struct tcm_qla2xxx_fc_loopid *fc_loopid; 1310 1311 pr_debug("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id); 1312 1313 fc_loopid = &((struct tcm_qla2xxx_fc_loopid *) 1314 lport->lport_loopid_map)[loop_id]; 1315 1316 saved_nacl = fc_loopid->se_nacl; 1317 if (!saved_nacl) { 1318 pr_debug("Setting up new fc_loopid->se_nacl to new_se_nacl\n"); 1319 fc_loopid->se_nacl = new_se_nacl; 1320 if (qla_tgt_sess->se_sess != se_sess) 1321 qla_tgt_sess->se_sess = se_sess; 1322 if (nacl->qla_tgt_sess != qla_tgt_sess) 1323 nacl->qla_tgt_sess = qla_tgt_sess; 1324 return; 1325 } 1326 1327 if (nacl->qla_tgt_sess) { 1328 if (new_se_nacl == NULL) { 1329 pr_debug("Clearing nacl->qla_tgt_sess and fc_loopid->se_nacl\n"); 1330 fc_loopid->se_nacl = NULL; 1331 nacl->qla_tgt_sess = NULL; 1332 return; 1333 } 1334 1335 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_loopid->se_nacl\n"); 1336 fc_loopid->se_nacl = new_se_nacl; 1337 if (qla_tgt_sess->se_sess != se_sess) 1338 qla_tgt_sess->se_sess = se_sess; 1339 if (nacl->qla_tgt_sess != qla_tgt_sess) 1340 nacl->qla_tgt_sess = qla_tgt_sess; 1341 return; 1342 } 1343 1344 if (new_se_nacl == NULL) { 1345 pr_debug("Clearing fc_loopid->se_nacl\n"); 1346 fc_loopid->se_nacl = NULL; 1347 return; 1348 } 1349 1350 pr_debug("Replacing existing fc_loopid->se_nacl w/o active nacl->qla_tgt_sess\n"); 1351 fc_loopid->se_nacl = new_se_nacl; 1352 if (qla_tgt_sess->se_sess != se_sess) 1353 qla_tgt_sess->se_sess = se_sess; 1354 if (nacl->qla_tgt_sess != qla_tgt_sess) 1355 nacl->qla_tgt_sess = qla_tgt_sess; 1356 1357 pr_debug("Setup nacl->qla_tgt_sess %p by loop_id for se_nacl: %p, initiatorname: %s\n", 1358 nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname); 1359 } 1360 1361 /* 1362 * Should always be called with qla_hw_data->tgt.sess_lock held. 1363 */ 1364 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *lport, 1365 struct tcm_qla2xxx_nacl *nacl, struct qla_tgt_sess *sess) 1366 { 1367 struct se_session *se_sess = sess->se_sess; 1368 unsigned char be_sid[3]; 1369 1370 be_sid[0] = sess->s_id.b.domain; 1371 be_sid[1] = sess->s_id.b.area; 1372 be_sid[2] = sess->s_id.b.al_pa; 1373 1374 tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess, 1375 sess, be_sid); 1376 tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess, 1377 sess, sess->loop_id); 1378 } 1379 1380 static void tcm_qla2xxx_free_session(struct qla_tgt_sess *sess) 1381 { 1382 struct qla_tgt *tgt = sess->tgt; 1383 struct qla_hw_data *ha = tgt->ha; 1384 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev); 1385 struct se_session *se_sess; 1386 struct tcm_qla2xxx_lport *lport; 1387 1388 BUG_ON(in_interrupt()); 1389 1390 se_sess = sess->se_sess; 1391 if (!se_sess) { 1392 pr_err("struct qla_tgt_sess->se_sess is NULL\n"); 1393 dump_stack(); 1394 return; 1395 } 1396 1397 lport = vha->vha_tgt.target_lport_ptr; 1398 if (!lport) { 1399 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1400 dump_stack(); 1401 return; 1402 } 1403 target_wait_for_sess_cmds(se_sess); 1404 1405 transport_deregister_session_configfs(sess->se_sess); 1406 transport_deregister_session(sess->se_sess); 1407 } 1408 1409 /* 1410 * Called via qlt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl() 1411 * to locate struct se_node_acl 1412 */ 1413 static int tcm_qla2xxx_check_initiator_node_acl( 1414 scsi_qla_host_t *vha, 1415 unsigned char *fc_wwpn, 1416 void *qla_tgt_sess, 1417 uint8_t *s_id, 1418 uint16_t loop_id) 1419 { 1420 struct qla_hw_data *ha = vha->hw; 1421 struct tcm_qla2xxx_lport *lport; 1422 struct tcm_qla2xxx_tpg *tpg; 1423 struct tcm_qla2xxx_nacl *nacl; 1424 struct se_portal_group *se_tpg; 1425 struct se_node_acl *se_nacl; 1426 struct se_session *se_sess; 1427 struct qla_tgt_sess *sess = qla_tgt_sess; 1428 unsigned char port_name[36]; 1429 unsigned long flags; 1430 int num_tags = (ha->cur_fw_xcb_count) ? ha->cur_fw_xcb_count : 1431 TCM_QLA2XXX_DEFAULT_TAGS; 1432 1433 lport = vha->vha_tgt.target_lport_ptr; 1434 if (!lport) { 1435 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1436 dump_stack(); 1437 return -EINVAL; 1438 } 1439 /* 1440 * Locate the TPG=1 reference.. 1441 */ 1442 tpg = lport->tpg_1; 1443 if (!tpg) { 1444 pr_err("Unable to lcoate struct tcm_qla2xxx_lport->tpg_1\n"); 1445 return -EINVAL; 1446 } 1447 se_tpg = &tpg->se_tpg; 1448 1449 se_sess = transport_init_session_tags(num_tags, 1450 sizeof(struct qla_tgt_cmd), 1451 TARGET_PROT_ALL); 1452 if (IS_ERR(se_sess)) { 1453 pr_err("Unable to initialize struct se_session\n"); 1454 return PTR_ERR(se_sess); 1455 } 1456 /* 1457 * Format the FCP Initiator port_name into colon seperated values to 1458 * match the format by tcm_qla2xxx explict ConfigFS NodeACLs. 1459 */ 1460 memset(&port_name, 0, 36); 1461 snprintf(port_name, sizeof(port_name), "%8phC", fc_wwpn); 1462 /* 1463 * Locate our struct se_node_acl either from an explict NodeACL created 1464 * via ConfigFS, or via running in TPG demo mode. 1465 */ 1466 se_sess->se_node_acl = core_tpg_check_initiator_node_acl(se_tpg, 1467 port_name); 1468 if (!se_sess->se_node_acl) { 1469 transport_free_session(se_sess); 1470 return -EINVAL; 1471 } 1472 se_nacl = se_sess->se_node_acl; 1473 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1474 /* 1475 * And now setup the new se_nacl and session pointers into our HW lport 1476 * mappings for fabric S_ID and LOOP_ID. 1477 */ 1478 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1479 tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl, se_sess, 1480 qla_tgt_sess, s_id); 1481 tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl, se_sess, 1482 qla_tgt_sess, loop_id); 1483 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1484 /* 1485 * Finally register the new FC Nexus with TCM 1486 */ 1487 transport_register_session(se_nacl->se_tpg, se_nacl, se_sess, sess); 1488 1489 return 0; 1490 } 1491 1492 static void tcm_qla2xxx_update_sess(struct qla_tgt_sess *sess, port_id_t s_id, 1493 uint16_t loop_id, bool conf_compl_supported) 1494 { 1495 struct qla_tgt *tgt = sess->tgt; 1496 struct qla_hw_data *ha = tgt->ha; 1497 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev); 1498 struct tcm_qla2xxx_lport *lport = vha->vha_tgt.target_lport_ptr; 1499 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl; 1500 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl, 1501 struct tcm_qla2xxx_nacl, se_node_acl); 1502 u32 key; 1503 1504 1505 if (sess->loop_id != loop_id || sess->s_id.b24 != s_id.b24) 1506 pr_info("Updating session %p from port %8phC loop_id %d -> %d s_id %x:%x:%x -> %x:%x:%x\n", 1507 sess, sess->port_name, 1508 sess->loop_id, loop_id, sess->s_id.b.domain, 1509 sess->s_id.b.area, sess->s_id.b.al_pa, s_id.b.domain, 1510 s_id.b.area, s_id.b.al_pa); 1511 1512 if (sess->loop_id != loop_id) { 1513 /* 1514 * Because we can shuffle loop IDs around and we 1515 * update different sessions non-atomically, we might 1516 * have overwritten this session's old loop ID 1517 * already, and we might end up overwriting some other 1518 * session that will be updated later. So we have to 1519 * be extra careful and we can't warn about those things... 1520 */ 1521 if (lport->lport_loopid_map[sess->loop_id].se_nacl == se_nacl) 1522 lport->lport_loopid_map[sess->loop_id].se_nacl = NULL; 1523 1524 lport->lport_loopid_map[loop_id].se_nacl = se_nacl; 1525 1526 sess->loop_id = loop_id; 1527 } 1528 1529 if (sess->s_id.b24 != s_id.b24) { 1530 key = (((u32) sess->s_id.b.domain << 16) | 1531 ((u32) sess->s_id.b.area << 8) | 1532 ((u32) sess->s_id.b.al_pa)); 1533 1534 if (btree_lookup32(&lport->lport_fcport_map, key)) 1535 WARN(btree_remove32(&lport->lport_fcport_map, key) != se_nacl, 1536 "Found wrong se_nacl when updating s_id %x:%x:%x\n", 1537 sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa); 1538 else 1539 WARN(1, "No lport_fcport_map entry for s_id %x:%x:%x\n", 1540 sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa); 1541 1542 key = (((u32) s_id.b.domain << 16) | 1543 ((u32) s_id.b.area << 8) | 1544 ((u32) s_id.b.al_pa)); 1545 1546 if (btree_lookup32(&lport->lport_fcport_map, key)) { 1547 WARN(1, "Already have lport_fcport_map entry for s_id %x:%x:%x\n", 1548 s_id.b.domain, s_id.b.area, s_id.b.al_pa); 1549 btree_update32(&lport->lport_fcport_map, key, se_nacl); 1550 } else { 1551 btree_insert32(&lport->lport_fcport_map, key, se_nacl, GFP_ATOMIC); 1552 } 1553 1554 sess->s_id = s_id; 1555 nacl->nport_id = key; 1556 } 1557 1558 sess->conf_compl_supported = conf_compl_supported; 1559 1560 /* Reset logout parameters to default */ 1561 sess->logout_on_delete = 1; 1562 sess->keep_nport_handle = 0; 1563 } 1564 1565 /* 1566 * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path. 1567 */ 1568 static struct qla_tgt_func_tmpl tcm_qla2xxx_template = { 1569 .handle_cmd = tcm_qla2xxx_handle_cmd, 1570 .handle_data = tcm_qla2xxx_handle_data, 1571 .handle_dif_err = tcm_qla2xxx_handle_dif_err, 1572 .handle_tmr = tcm_qla2xxx_handle_tmr, 1573 .free_cmd = tcm_qla2xxx_free_cmd, 1574 .free_mcmd = tcm_qla2xxx_free_mcmd, 1575 .free_session = tcm_qla2xxx_free_session, 1576 .update_sess = tcm_qla2xxx_update_sess, 1577 .check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl, 1578 .find_sess_by_s_id = tcm_qla2xxx_find_sess_by_s_id, 1579 .find_sess_by_loop_id = tcm_qla2xxx_find_sess_by_loop_id, 1580 .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map, 1581 .put_sess = tcm_qla2xxx_put_sess, 1582 .shutdown_sess = tcm_qla2xxx_shutdown_sess, 1583 }; 1584 1585 static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport) 1586 { 1587 int rc; 1588 1589 rc = btree_init32(&lport->lport_fcport_map); 1590 if (rc) { 1591 pr_err("Unable to initialize lport->lport_fcport_map btree\n"); 1592 return rc; 1593 } 1594 1595 lport->lport_loopid_map = vmalloc(sizeof(struct tcm_qla2xxx_fc_loopid) * 1596 65536); 1597 if (!lport->lport_loopid_map) { 1598 pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n", 1599 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536); 1600 btree_destroy32(&lport->lport_fcport_map); 1601 return -ENOMEM; 1602 } 1603 memset(lport->lport_loopid_map, 0, sizeof(struct tcm_qla2xxx_fc_loopid) 1604 * 65536); 1605 pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n", 1606 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536); 1607 return 0; 1608 } 1609 1610 static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha, 1611 void *target_lport_ptr, 1612 u64 npiv_wwpn, u64 npiv_wwnn) 1613 { 1614 struct qla_hw_data *ha = vha->hw; 1615 struct tcm_qla2xxx_lport *lport = 1616 (struct tcm_qla2xxx_lport *)target_lport_ptr; 1617 /* 1618 * Setup tgt_ops, local pointer to vha and target_lport_ptr 1619 */ 1620 ha->tgt.tgt_ops = &tcm_qla2xxx_template; 1621 vha->vha_tgt.target_lport_ptr = target_lport_ptr; 1622 lport->qla_vha = vha; 1623 1624 return 0; 1625 } 1626 1627 static struct se_wwn *tcm_qla2xxx_make_lport( 1628 struct target_fabric_configfs *tf, 1629 struct config_group *group, 1630 const char *name) 1631 { 1632 struct tcm_qla2xxx_lport *lport; 1633 u64 wwpn; 1634 int ret = -ENODEV; 1635 1636 if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0) 1637 return ERR_PTR(-EINVAL); 1638 1639 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL); 1640 if (!lport) { 1641 pr_err("Unable to allocate struct tcm_qla2xxx_lport\n"); 1642 return ERR_PTR(-ENOMEM); 1643 } 1644 lport->lport_wwpn = wwpn; 1645 tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN, 1646 wwpn); 1647 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) wwpn); 1648 1649 ret = tcm_qla2xxx_init_lport(lport); 1650 if (ret != 0) 1651 goto out; 1652 1653 ret = qlt_lport_register(lport, wwpn, 0, 0, 1654 tcm_qla2xxx_lport_register_cb); 1655 if (ret != 0) 1656 goto out_lport; 1657 1658 return &lport->lport_wwn; 1659 out_lport: 1660 vfree(lport->lport_loopid_map); 1661 btree_destroy32(&lport->lport_fcport_map); 1662 out: 1663 kfree(lport); 1664 return ERR_PTR(ret); 1665 } 1666 1667 static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn) 1668 { 1669 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1670 struct tcm_qla2xxx_lport, lport_wwn); 1671 struct scsi_qla_host *vha = lport->qla_vha; 1672 struct se_node_acl *node; 1673 u32 key = 0; 1674 1675 /* 1676 * Call into qla2x_target.c LLD logic to complete the 1677 * shutdown of struct qla_tgt after the call to 1678 * qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above.. 1679 */ 1680 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stopped) 1681 qlt_stop_phase2(vha->vha_tgt.qla_tgt); 1682 1683 qlt_lport_deregister(vha); 1684 1685 vfree(lport->lport_loopid_map); 1686 btree_for_each_safe32(&lport->lport_fcport_map, key, node) 1687 btree_remove32(&lport->lport_fcport_map, key); 1688 btree_destroy32(&lport->lport_fcport_map); 1689 kfree(lport); 1690 } 1691 1692 static int tcm_qla2xxx_lport_register_npiv_cb(struct scsi_qla_host *base_vha, 1693 void *target_lport_ptr, 1694 u64 npiv_wwpn, u64 npiv_wwnn) 1695 { 1696 struct fc_vport *vport; 1697 struct Scsi_Host *sh = base_vha->host; 1698 struct scsi_qla_host *npiv_vha; 1699 struct tcm_qla2xxx_lport *lport = 1700 (struct tcm_qla2xxx_lport *)target_lport_ptr; 1701 struct tcm_qla2xxx_lport *base_lport = 1702 (struct tcm_qla2xxx_lport *)base_vha->vha_tgt.target_lport_ptr; 1703 struct fc_vport_identifiers vport_id; 1704 1705 if (!qla_tgt_mode_enabled(base_vha)) { 1706 pr_err("qla2xxx base_vha not enabled for target mode\n"); 1707 return -EPERM; 1708 } 1709 1710 if (!base_lport || !base_lport->tpg_1 || 1711 !atomic_read(&base_lport->tpg_1->lport_tpg_enabled)) { 1712 pr_err("qla2xxx base_lport or tpg_1 not available\n"); 1713 return -EPERM; 1714 } 1715 1716 memset(&vport_id, 0, sizeof(vport_id)); 1717 vport_id.port_name = npiv_wwpn; 1718 vport_id.node_name = npiv_wwnn; 1719 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR; 1720 vport_id.vport_type = FC_PORTTYPE_NPIV; 1721 vport_id.disable = false; 1722 1723 vport = fc_vport_create(sh, 0, &vport_id); 1724 if (!vport) { 1725 pr_err("fc_vport_create failed for qla2xxx_npiv\n"); 1726 return -ENODEV; 1727 } 1728 /* 1729 * Setup local pointer to NPIV vhba + target_lport_ptr 1730 */ 1731 npiv_vha = (struct scsi_qla_host *)vport->dd_data; 1732 npiv_vha->vha_tgt.target_lport_ptr = target_lport_ptr; 1733 lport->qla_vha = npiv_vha; 1734 scsi_host_get(npiv_vha->host); 1735 return 0; 1736 } 1737 1738 1739 static struct se_wwn *tcm_qla2xxx_npiv_make_lport( 1740 struct target_fabric_configfs *tf, 1741 struct config_group *group, 1742 const char *name) 1743 { 1744 struct tcm_qla2xxx_lport *lport; 1745 u64 phys_wwpn, npiv_wwpn, npiv_wwnn; 1746 char *p, tmp[128]; 1747 int ret; 1748 1749 snprintf(tmp, 128, "%s", name); 1750 1751 p = strchr(tmp, '@'); 1752 if (!p) { 1753 pr_err("Unable to locate NPIV '@' seperator\n"); 1754 return ERR_PTR(-EINVAL); 1755 } 1756 *p++ = '\0'; 1757 1758 if (tcm_qla2xxx_parse_wwn(tmp, &phys_wwpn, 1) < 0) 1759 return ERR_PTR(-EINVAL); 1760 1761 if (tcm_qla2xxx_npiv_parse_wwn(p, strlen(p)+1, 1762 &npiv_wwpn, &npiv_wwnn) < 0) 1763 return ERR_PTR(-EINVAL); 1764 1765 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL); 1766 if (!lport) { 1767 pr_err("Unable to allocate struct tcm_qla2xxx_lport for NPIV\n"); 1768 return ERR_PTR(-ENOMEM); 1769 } 1770 lport->lport_npiv_wwpn = npiv_wwpn; 1771 lport->lport_npiv_wwnn = npiv_wwnn; 1772 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) npiv_wwpn); 1773 1774 ret = tcm_qla2xxx_init_lport(lport); 1775 if (ret != 0) 1776 goto out; 1777 1778 ret = qlt_lport_register(lport, phys_wwpn, npiv_wwpn, npiv_wwnn, 1779 tcm_qla2xxx_lport_register_npiv_cb); 1780 if (ret != 0) 1781 goto out_lport; 1782 1783 return &lport->lport_wwn; 1784 out_lport: 1785 vfree(lport->lport_loopid_map); 1786 btree_destroy32(&lport->lport_fcport_map); 1787 out: 1788 kfree(lport); 1789 return ERR_PTR(ret); 1790 } 1791 1792 static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn) 1793 { 1794 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1795 struct tcm_qla2xxx_lport, lport_wwn); 1796 struct scsi_qla_host *npiv_vha = lport->qla_vha; 1797 struct qla_hw_data *ha = npiv_vha->hw; 1798 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 1799 1800 scsi_host_put(npiv_vha->host); 1801 /* 1802 * Notify libfc that we want to release the vha->fc_vport 1803 */ 1804 fc_vport_terminate(npiv_vha->fc_vport); 1805 scsi_host_put(base_vha->host); 1806 kfree(lport); 1807 } 1808 1809 1810 static ssize_t tcm_qla2xxx_wwn_version_show(struct config_item *item, 1811 char *page) 1812 { 1813 return sprintf(page, 1814 "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s on " 1815 UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname, 1816 utsname()->machine); 1817 } 1818 1819 CONFIGFS_ATTR_RO(tcm_qla2xxx_wwn_, version); 1820 1821 static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = { 1822 &tcm_qla2xxx_wwn_attr_version, 1823 NULL, 1824 }; 1825 1826 static const struct target_core_fabric_ops tcm_qla2xxx_ops = { 1827 .module = THIS_MODULE, 1828 .name = "qla2xxx", 1829 .node_acl_size = sizeof(struct tcm_qla2xxx_nacl), 1830 /* 1831 * XXX: Limit assumes single page per scatter-gather-list entry. 1832 * Current maximum is ~4.9 MB per se_cmd->t_data_sg with PAGE_SIZE=4096 1833 */ 1834 .max_data_sg_nents = 1200, 1835 .get_fabric_name = tcm_qla2xxx_get_fabric_name, 1836 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn, 1837 .tpg_get_tag = tcm_qla2xxx_get_tag, 1838 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode, 1839 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache, 1840 .tpg_check_demo_mode_write_protect = 1841 tcm_qla2xxx_check_demo_write_protect, 1842 .tpg_check_prod_mode_write_protect = 1843 tcm_qla2xxx_check_prod_write_protect, 1844 .tpg_check_prot_fabric_only = tcm_qla2xxx_check_prot_fabric_only, 1845 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only, 1846 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index, 1847 .check_stop_free = tcm_qla2xxx_check_stop_free, 1848 .release_cmd = tcm_qla2xxx_release_cmd, 1849 .shutdown_session = tcm_qla2xxx_shutdown_session, 1850 .close_session = tcm_qla2xxx_close_session, 1851 .sess_get_index = tcm_qla2xxx_sess_get_index, 1852 .sess_get_initiator_sid = NULL, 1853 .write_pending = tcm_qla2xxx_write_pending, 1854 .write_pending_status = tcm_qla2xxx_write_pending_status, 1855 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs, 1856 .get_cmd_state = tcm_qla2xxx_get_cmd_state, 1857 .queue_data_in = tcm_qla2xxx_queue_data_in, 1858 .queue_status = tcm_qla2xxx_queue_status, 1859 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp, 1860 .aborted_task = tcm_qla2xxx_aborted_task, 1861 /* 1862 * Setup function pointers for generic logic in 1863 * target_core_fabric_configfs.c 1864 */ 1865 .fabric_make_wwn = tcm_qla2xxx_make_lport, 1866 .fabric_drop_wwn = tcm_qla2xxx_drop_lport, 1867 .fabric_make_tpg = tcm_qla2xxx_make_tpg, 1868 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg, 1869 .fabric_init_nodeacl = tcm_qla2xxx_init_nodeacl, 1870 1871 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs, 1872 .tfc_tpg_base_attrs = tcm_qla2xxx_tpg_attrs, 1873 .tfc_tpg_attrib_attrs = tcm_qla2xxx_tpg_attrib_attrs, 1874 }; 1875 1876 static const struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = { 1877 .module = THIS_MODULE, 1878 .name = "qla2xxx_npiv", 1879 .node_acl_size = sizeof(struct tcm_qla2xxx_nacl), 1880 .get_fabric_name = tcm_qla2xxx_npiv_get_fabric_name, 1881 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn, 1882 .tpg_get_tag = tcm_qla2xxx_get_tag, 1883 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode, 1884 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache, 1885 .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_demo_mode, 1886 .tpg_check_prod_mode_write_protect = 1887 tcm_qla2xxx_check_prod_write_protect, 1888 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only, 1889 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index, 1890 .check_stop_free = tcm_qla2xxx_check_stop_free, 1891 .release_cmd = tcm_qla2xxx_release_cmd, 1892 .shutdown_session = tcm_qla2xxx_shutdown_session, 1893 .close_session = tcm_qla2xxx_close_session, 1894 .sess_get_index = tcm_qla2xxx_sess_get_index, 1895 .sess_get_initiator_sid = NULL, 1896 .write_pending = tcm_qla2xxx_write_pending, 1897 .write_pending_status = tcm_qla2xxx_write_pending_status, 1898 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs, 1899 .get_cmd_state = tcm_qla2xxx_get_cmd_state, 1900 .queue_data_in = tcm_qla2xxx_queue_data_in, 1901 .queue_status = tcm_qla2xxx_queue_status, 1902 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp, 1903 .aborted_task = tcm_qla2xxx_aborted_task, 1904 /* 1905 * Setup function pointers for generic logic in 1906 * target_core_fabric_configfs.c 1907 */ 1908 .fabric_make_wwn = tcm_qla2xxx_npiv_make_lport, 1909 .fabric_drop_wwn = tcm_qla2xxx_npiv_drop_lport, 1910 .fabric_make_tpg = tcm_qla2xxx_npiv_make_tpg, 1911 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg, 1912 .fabric_init_nodeacl = tcm_qla2xxx_init_nodeacl, 1913 1914 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs, 1915 .tfc_tpg_base_attrs = tcm_qla2xxx_npiv_tpg_attrs, 1916 }; 1917 1918 static int tcm_qla2xxx_register_configfs(void) 1919 { 1920 int ret; 1921 1922 pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on " 1923 UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname, 1924 utsname()->machine); 1925 1926 ret = target_register_template(&tcm_qla2xxx_ops); 1927 if (ret) 1928 return ret; 1929 1930 ret = target_register_template(&tcm_qla2xxx_npiv_ops); 1931 if (ret) 1932 goto out_fabric; 1933 1934 tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free", 1935 WQ_MEM_RECLAIM, 0); 1936 if (!tcm_qla2xxx_free_wq) { 1937 ret = -ENOMEM; 1938 goto out_fabric_npiv; 1939 } 1940 1941 tcm_qla2xxx_cmd_wq = alloc_workqueue("tcm_qla2xxx_cmd", 0, 0); 1942 if (!tcm_qla2xxx_cmd_wq) { 1943 ret = -ENOMEM; 1944 goto out_free_wq; 1945 } 1946 1947 return 0; 1948 1949 out_free_wq: 1950 destroy_workqueue(tcm_qla2xxx_free_wq); 1951 out_fabric_npiv: 1952 target_unregister_template(&tcm_qla2xxx_npiv_ops); 1953 out_fabric: 1954 target_unregister_template(&tcm_qla2xxx_ops); 1955 return ret; 1956 } 1957 1958 static void tcm_qla2xxx_deregister_configfs(void) 1959 { 1960 destroy_workqueue(tcm_qla2xxx_cmd_wq); 1961 destroy_workqueue(tcm_qla2xxx_free_wq); 1962 1963 target_unregister_template(&tcm_qla2xxx_ops); 1964 target_unregister_template(&tcm_qla2xxx_npiv_ops); 1965 } 1966 1967 static int __init tcm_qla2xxx_init(void) 1968 { 1969 int ret; 1970 1971 ret = tcm_qla2xxx_register_configfs(); 1972 if (ret < 0) 1973 return ret; 1974 1975 return 0; 1976 } 1977 1978 static void __exit tcm_qla2xxx_exit(void) 1979 { 1980 tcm_qla2xxx_deregister_configfs(); 1981 } 1982 1983 MODULE_DESCRIPTION("TCM QLA24XX+ series NPIV enabled fabric driver"); 1984 MODULE_LICENSE("GPL"); 1985 module_init(tcm_qla2xxx_init); 1986 module_exit(tcm_qla2xxx_exit); 1987