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 void tcm_qla2xxx_close_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 qlt_put_sess(sess); 354 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 355 } 356 357 static u32 tcm_qla2xxx_sess_get_index(struct se_session *se_sess) 358 { 359 return 0; 360 } 361 362 static int tcm_qla2xxx_write_pending(struct se_cmd *se_cmd) 363 { 364 struct qla_tgt_cmd *cmd = container_of(se_cmd, 365 struct qla_tgt_cmd, se_cmd); 366 367 if (cmd->aborted) { 368 /* Cmd can loop during Q-full. tcm_qla2xxx_aborted_task 369 * can get ahead of this cmd. tcm_qla2xxx_aborted_task 370 * already kick start the free. 371 */ 372 pr_debug("write_pending aborted cmd[%p] refcount %d " 373 "transport_state %x, t_state %x, se_cmd_flags %x\n", 374 cmd,cmd->se_cmd.cmd_kref.refcount.counter, 375 cmd->se_cmd.transport_state, 376 cmd->se_cmd.t_state, 377 cmd->se_cmd.se_cmd_flags); 378 return 0; 379 } 380 cmd->cmd_flags |= BIT_3; 381 cmd->bufflen = se_cmd->data_length; 382 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd); 383 384 cmd->sg_cnt = se_cmd->t_data_nents; 385 cmd->sg = se_cmd->t_data_sg; 386 387 cmd->prot_sg_cnt = se_cmd->t_prot_nents; 388 cmd->prot_sg = se_cmd->t_prot_sg; 389 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size; 390 se_cmd->pi_err = 0; 391 392 /* 393 * qla_target.c:qlt_rdy_to_xfer() will call pci_map_sg() to setup 394 * the SGL mappings into PCIe memory for incoming FCP WRITE data. 395 */ 396 return qlt_rdy_to_xfer(cmd); 397 } 398 399 static int tcm_qla2xxx_write_pending_status(struct se_cmd *se_cmd) 400 { 401 unsigned long flags; 402 /* 403 * Check for WRITE_PENDING status to determine if we need to wait for 404 * CTIO aborts to be posted via hardware in tcm_qla2xxx_handle_data(). 405 */ 406 spin_lock_irqsave(&se_cmd->t_state_lock, flags); 407 if (se_cmd->t_state == TRANSPORT_WRITE_PENDING || 408 se_cmd->t_state == TRANSPORT_COMPLETE_QF_WP) { 409 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags); 410 wait_for_completion_timeout(&se_cmd->t_transport_stop_comp, 411 50); 412 return 0; 413 } 414 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags); 415 416 return 0; 417 } 418 419 static void tcm_qla2xxx_set_default_node_attrs(struct se_node_acl *nacl) 420 { 421 return; 422 } 423 424 static int tcm_qla2xxx_get_cmd_state(struct se_cmd *se_cmd) 425 { 426 if (!(se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB)) { 427 struct qla_tgt_cmd *cmd = container_of(se_cmd, 428 struct qla_tgt_cmd, se_cmd); 429 return cmd->state; 430 } 431 432 return 0; 433 } 434 435 /* 436 * Called from process context in qla_target.c:qlt_do_work() code 437 */ 438 static int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd, 439 unsigned char *cdb, uint32_t data_length, int fcp_task_attr, 440 int data_dir, int bidi) 441 { 442 struct se_cmd *se_cmd = &cmd->se_cmd; 443 struct se_session *se_sess; 444 struct qla_tgt_sess *sess; 445 #ifdef CONFIG_TCM_QLA2XXX_DEBUG 446 struct se_portal_group *se_tpg; 447 struct tcm_qla2xxx_tpg *tpg; 448 #endif 449 int flags = TARGET_SCF_ACK_KREF; 450 451 if (bidi) 452 flags |= TARGET_SCF_BIDI_OP; 453 454 if (se_cmd->cpuid != WORK_CPU_UNBOUND) 455 flags |= TARGET_SCF_USE_CPUID; 456 457 sess = cmd->sess; 458 if (!sess) { 459 pr_err("Unable to locate struct qla_tgt_sess from qla_tgt_cmd\n"); 460 return -EINVAL; 461 } 462 463 se_sess = sess->se_sess; 464 if (!se_sess) { 465 pr_err("Unable to locate active struct se_session\n"); 466 return -EINVAL; 467 } 468 469 #ifdef CONFIG_TCM_QLA2XXX_DEBUG 470 se_tpg = se_sess->se_tpg; 471 tpg = container_of(se_tpg, struct tcm_qla2xxx_tpg, se_tpg); 472 if (unlikely(tpg->tpg_attrib.jam_host)) { 473 /* return, and dont run target_submit_cmd,discarding command */ 474 return 0; 475 } 476 #endif 477 478 cmd->vha->tgt_counters.qla_core_sbt_cmd++; 479 return target_submit_cmd(se_cmd, se_sess, cdb, &cmd->sense_buffer[0], 480 cmd->unpacked_lun, data_length, fcp_task_attr, 481 data_dir, flags); 482 } 483 484 static void tcm_qla2xxx_handle_data_work(struct work_struct *work) 485 { 486 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 487 unsigned long flags; 488 489 /* 490 * Ensure that the complete FCP WRITE payload has been received. 491 * Otherwise return an exception via CHECK_CONDITION status. 492 */ 493 cmd->cmd_in_wq = 0; 494 495 spin_lock_irqsave(&cmd->cmd_lock, flags); 496 cmd->cmd_flags |= CMD_FLAG_DATA_WORK; 497 if (cmd->aborted) { 498 cmd->cmd_flags |= CMD_FLAG_DATA_WORK_FREE; 499 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 500 501 tcm_qla2xxx_free_cmd(cmd); 502 return; 503 } 504 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 505 506 cmd->vha->tgt_counters.qla_core_ret_ctio++; 507 if (!cmd->write_data_transferred) { 508 /* 509 * Check if se_cmd has already been aborted via LUN_RESET, and 510 * waiting upon completion in tcm_qla2xxx_write_pending_status() 511 */ 512 if (cmd->se_cmd.transport_state & CMD_T_ABORTED) { 513 complete(&cmd->se_cmd.t_transport_stop_comp); 514 return; 515 } 516 517 if (cmd->se_cmd.pi_err) 518 transport_generic_request_failure(&cmd->se_cmd, 519 cmd->se_cmd.pi_err); 520 else 521 transport_generic_request_failure(&cmd->se_cmd, 522 TCM_CHECK_CONDITION_ABORT_CMD); 523 524 return; 525 } 526 527 return target_execute_cmd(&cmd->se_cmd); 528 } 529 530 /* 531 * Called from qla_target.c:qlt_do_ctio_completion() 532 */ 533 static void tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd) 534 { 535 cmd->cmd_flags |= BIT_10; 536 cmd->cmd_in_wq = 1; 537 INIT_WORK(&cmd->work, tcm_qla2xxx_handle_data_work); 538 queue_work_on(smp_processor_id(), tcm_qla2xxx_free_wq, &cmd->work); 539 } 540 541 static void tcm_qla2xxx_handle_dif_work(struct work_struct *work) 542 { 543 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 544 545 /* take an extra kref to prevent cmd free too early. 546 * need to wait for SCSI status/check condition to 547 * finish responding generate by transport_generic_request_failure. 548 */ 549 kref_get(&cmd->se_cmd.cmd_kref); 550 transport_generic_request_failure(&cmd->se_cmd, cmd->se_cmd.pi_err); 551 } 552 553 /* 554 * Called from qla_target.c:qlt_do_ctio_completion() 555 */ 556 static void tcm_qla2xxx_handle_dif_err(struct qla_tgt_cmd *cmd) 557 { 558 INIT_WORK(&cmd->work, tcm_qla2xxx_handle_dif_work); 559 queue_work(tcm_qla2xxx_free_wq, &cmd->work); 560 } 561 562 /* 563 * Called from qla_target.c:qlt_issue_task_mgmt() 564 */ 565 static int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *mcmd, uint32_t lun, 566 uint8_t tmr_func, uint32_t tag) 567 { 568 struct qla_tgt_sess *sess = mcmd->sess; 569 struct se_cmd *se_cmd = &mcmd->se_cmd; 570 571 return target_submit_tmr(se_cmd, sess->se_sess, NULL, lun, mcmd, 572 tmr_func, GFP_ATOMIC, tag, TARGET_SCF_ACK_KREF); 573 } 574 575 static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd) 576 { 577 struct qla_tgt_cmd *cmd = container_of(se_cmd, 578 struct qla_tgt_cmd, se_cmd); 579 580 if (cmd->aborted) { 581 /* Cmd can loop during Q-full. tcm_qla2xxx_aborted_task 582 * can get ahead of this cmd. tcm_qla2xxx_aborted_task 583 * already kick start the free. 584 */ 585 pr_debug("queue_data_in aborted cmd[%p] refcount %d " 586 "transport_state %x, t_state %x, se_cmd_flags %x\n", 587 cmd,cmd->se_cmd.cmd_kref.refcount.counter, 588 cmd->se_cmd.transport_state, 589 cmd->se_cmd.t_state, 590 cmd->se_cmd.se_cmd_flags); 591 return 0; 592 } 593 594 cmd->cmd_flags |= BIT_4; 595 cmd->bufflen = se_cmd->data_length; 596 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd); 597 598 cmd->sg_cnt = se_cmd->t_data_nents; 599 cmd->sg = se_cmd->t_data_sg; 600 cmd->offset = 0; 601 602 cmd->prot_sg_cnt = se_cmd->t_prot_nents; 603 cmd->prot_sg = se_cmd->t_prot_sg; 604 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size; 605 se_cmd->pi_err = 0; 606 607 /* 608 * Now queue completed DATA_IN the qla2xxx LLD and response ring 609 */ 610 return qlt_xmit_response(cmd, QLA_TGT_XMIT_DATA|QLA_TGT_XMIT_STATUS, 611 se_cmd->scsi_status); 612 } 613 614 static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd) 615 { 616 struct qla_tgt_cmd *cmd = container_of(se_cmd, 617 struct qla_tgt_cmd, se_cmd); 618 int xmit_type = QLA_TGT_XMIT_STATUS; 619 620 cmd->bufflen = se_cmd->data_length; 621 cmd->sg = NULL; 622 cmd->sg_cnt = 0; 623 cmd->offset = 0; 624 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd); 625 if (cmd->cmd_flags & BIT_5) { 626 pr_crit("Bit_5 already set for cmd = %p.\n", cmd); 627 dump_stack(); 628 } 629 cmd->cmd_flags |= BIT_5; 630 631 if (se_cmd->data_direction == DMA_FROM_DEVICE) { 632 /* 633 * For FCP_READ with CHECK_CONDITION status, clear cmd->bufflen 634 * for qla_tgt_xmit_response LLD code 635 */ 636 if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) { 637 se_cmd->se_cmd_flags &= ~SCF_OVERFLOW_BIT; 638 se_cmd->residual_count = 0; 639 } 640 se_cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT; 641 se_cmd->residual_count += se_cmd->data_length; 642 643 cmd->bufflen = 0; 644 } 645 /* 646 * Now queue status response to qla2xxx LLD code and response ring 647 */ 648 return qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status); 649 } 650 651 static void tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd) 652 { 653 struct se_tmr_req *se_tmr = se_cmd->se_tmr_req; 654 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd, 655 struct qla_tgt_mgmt_cmd, se_cmd); 656 657 pr_debug("queue_tm_rsp: mcmd: %p func: 0x%02x response: 0x%02x\n", 658 mcmd, se_tmr->function, se_tmr->response); 659 /* 660 * Do translation between TCM TM response codes and 661 * QLA2xxx FC TM response codes. 662 */ 663 switch (se_tmr->response) { 664 case TMR_FUNCTION_COMPLETE: 665 mcmd->fc_tm_rsp = FC_TM_SUCCESS; 666 break; 667 case TMR_TASK_DOES_NOT_EXIST: 668 mcmd->fc_tm_rsp = FC_TM_BAD_CMD; 669 break; 670 case TMR_FUNCTION_REJECTED: 671 mcmd->fc_tm_rsp = FC_TM_REJECT; 672 break; 673 case TMR_LUN_DOES_NOT_EXIST: 674 default: 675 mcmd->fc_tm_rsp = FC_TM_FAILED; 676 break; 677 } 678 /* 679 * Queue the TM response to QLA2xxx LLD to build a 680 * CTIO response packet. 681 */ 682 qlt_xmit_tm_rsp(mcmd); 683 } 684 685 686 #define DATA_WORK_NOT_FREE(_flags) \ 687 (( _flags & (CMD_FLAG_DATA_WORK|CMD_FLAG_DATA_WORK_FREE)) == \ 688 CMD_FLAG_DATA_WORK) 689 static void tcm_qla2xxx_aborted_task(struct se_cmd *se_cmd) 690 { 691 struct qla_tgt_cmd *cmd = container_of(se_cmd, 692 struct qla_tgt_cmd, se_cmd); 693 unsigned long flags; 694 695 if (qlt_abort_cmd(cmd)) 696 return; 697 698 spin_lock_irqsave(&cmd->cmd_lock, flags); 699 if ((cmd->state == QLA_TGT_STATE_NEW)|| 700 ((cmd->state == QLA_TGT_STATE_DATA_IN) && 701 DATA_WORK_NOT_FREE(cmd->cmd_flags)) ) { 702 703 cmd->cmd_flags |= CMD_FLAG_DATA_WORK_FREE; 704 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 705 /* Cmd have not reached firmware. 706 * Use this trigger to free it. */ 707 tcm_qla2xxx_free_cmd(cmd); 708 return; 709 } 710 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 711 return; 712 713 } 714 715 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *, 716 struct tcm_qla2xxx_nacl *, struct qla_tgt_sess *); 717 /* 718 * Expected to be called with struct qla_hw_data->tgt.sess_lock held 719 */ 720 static void tcm_qla2xxx_clear_nacl_from_fcport_map(struct qla_tgt_sess *sess) 721 { 722 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl; 723 struct se_portal_group *se_tpg = se_nacl->se_tpg; 724 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn; 725 struct tcm_qla2xxx_lport *lport = container_of(se_wwn, 726 struct tcm_qla2xxx_lport, lport_wwn); 727 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl, 728 struct tcm_qla2xxx_nacl, se_node_acl); 729 void *node; 730 731 pr_debug("fc_rport domain: port_id 0x%06x\n", nacl->nport_id); 732 733 node = btree_remove32(&lport->lport_fcport_map, nacl->nport_id); 734 if (WARN_ON(node && (node != se_nacl))) { 735 /* 736 * The nacl no longer matches what we think it should be. 737 * Most likely a new dynamic acl has been added while 738 * someone dropped the hardware lock. It clearly is a 739 * bug elsewhere, but this bit can't make things worse. 740 */ 741 btree_insert32(&lport->lport_fcport_map, nacl->nport_id, 742 node, GFP_ATOMIC); 743 } 744 745 pr_debug("Removed from fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%06x\n", 746 se_nacl, nacl->nport_wwnn, nacl->nport_id); 747 /* 748 * Now clear the se_nacl and session pointers from our HW lport lookup 749 * table mapping for this initiator's fabric S_ID and LOOP_ID entries. 750 * 751 * This is done ahead of callbacks into tcm_qla2xxx_free_session() -> 752 * target_wait_for_sess_cmds() before the session waits for outstanding 753 * I/O to complete, to avoid a race between session shutdown execution 754 * and incoming ATIOs or TMRs picking up a stale se_node_act reference. 755 */ 756 tcm_qla2xxx_clear_sess_lookup(lport, nacl, sess); 757 } 758 759 static void tcm_qla2xxx_shutdown_sess(struct qla_tgt_sess *sess) 760 { 761 assert_spin_locked(&sess->vha->hw->tgt.sess_lock); 762 target_sess_cmd_list_set_waiting(sess->se_sess); 763 } 764 765 static int tcm_qla2xxx_init_nodeacl(struct se_node_acl *se_nacl, 766 const char *name) 767 { 768 struct tcm_qla2xxx_nacl *nacl = 769 container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 770 u64 wwnn; 771 772 if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0) 773 return -EINVAL; 774 775 nacl->nport_wwnn = wwnn; 776 tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn); 777 778 return 0; 779 } 780 781 /* Start items for tcm_qla2xxx_tpg_attrib_cit */ 782 783 #define DEF_QLA_TPG_ATTRIB(name) \ 784 \ 785 static ssize_t tcm_qla2xxx_tpg_attrib_##name##_show( \ 786 struct config_item *item, char *page) \ 787 { \ 788 struct se_portal_group *se_tpg = attrib_to_tpg(item); \ 789 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \ 790 struct tcm_qla2xxx_tpg, se_tpg); \ 791 \ 792 return sprintf(page, "%u\n", tpg->tpg_attrib.name); \ 793 } \ 794 \ 795 static ssize_t tcm_qla2xxx_tpg_attrib_##name##_store( \ 796 struct config_item *item, const char *page, size_t count) \ 797 { \ 798 struct se_portal_group *se_tpg = attrib_to_tpg(item); \ 799 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \ 800 struct tcm_qla2xxx_tpg, se_tpg); \ 801 struct tcm_qla2xxx_tpg_attrib *a = &tpg->tpg_attrib; \ 802 unsigned long val; \ 803 int ret; \ 804 \ 805 ret = kstrtoul(page, 0, &val); \ 806 if (ret < 0) { \ 807 pr_err("kstrtoul() failed with" \ 808 " ret: %d\n", ret); \ 809 return -EINVAL; \ 810 } \ 811 \ 812 if ((val != 0) && (val != 1)) { \ 813 pr_err("Illegal boolean value %lu\n", val); \ 814 return -EINVAL; \ 815 } \ 816 \ 817 a->name = val; \ 818 \ 819 return count; \ 820 } \ 821 CONFIGFS_ATTR(tcm_qla2xxx_tpg_attrib_, name) 822 823 DEF_QLA_TPG_ATTRIB(generate_node_acls); 824 DEF_QLA_TPG_ATTRIB(cache_dynamic_acls); 825 DEF_QLA_TPG_ATTRIB(demo_mode_write_protect); 826 DEF_QLA_TPG_ATTRIB(prod_mode_write_protect); 827 DEF_QLA_TPG_ATTRIB(demo_mode_login_only); 828 #ifdef CONFIG_TCM_QLA2XXX_DEBUG 829 DEF_QLA_TPG_ATTRIB(jam_host); 830 #endif 831 832 static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = { 833 &tcm_qla2xxx_tpg_attrib_attr_generate_node_acls, 834 &tcm_qla2xxx_tpg_attrib_attr_cache_dynamic_acls, 835 &tcm_qla2xxx_tpg_attrib_attr_demo_mode_write_protect, 836 &tcm_qla2xxx_tpg_attrib_attr_prod_mode_write_protect, 837 &tcm_qla2xxx_tpg_attrib_attr_demo_mode_login_only, 838 #ifdef CONFIG_TCM_QLA2XXX_DEBUG 839 &tcm_qla2xxx_tpg_attrib_attr_jam_host, 840 #endif 841 NULL, 842 }; 843 844 /* End items for tcm_qla2xxx_tpg_attrib_cit */ 845 846 static ssize_t tcm_qla2xxx_tpg_enable_show(struct config_item *item, 847 char *page) 848 { 849 struct se_portal_group *se_tpg = to_tpg(item); 850 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 851 struct tcm_qla2xxx_tpg, se_tpg); 852 853 return snprintf(page, PAGE_SIZE, "%d\n", 854 atomic_read(&tpg->lport_tpg_enabled)); 855 } 856 857 static void tcm_qla2xxx_depend_tpg(struct work_struct *work) 858 { 859 struct tcm_qla2xxx_tpg *base_tpg = container_of(work, 860 struct tcm_qla2xxx_tpg, tpg_base_work); 861 struct se_portal_group *se_tpg = &base_tpg->se_tpg; 862 struct scsi_qla_host *base_vha = base_tpg->lport->qla_vha; 863 864 if (!target_depend_item(&se_tpg->tpg_group.cg_item)) { 865 atomic_set(&base_tpg->lport_tpg_enabled, 1); 866 qlt_enable_vha(base_vha); 867 } 868 complete(&base_tpg->tpg_base_comp); 869 } 870 871 static void tcm_qla2xxx_undepend_tpg(struct work_struct *work) 872 { 873 struct tcm_qla2xxx_tpg *base_tpg = container_of(work, 874 struct tcm_qla2xxx_tpg, tpg_base_work); 875 struct se_portal_group *se_tpg = &base_tpg->se_tpg; 876 struct scsi_qla_host *base_vha = base_tpg->lport->qla_vha; 877 878 if (!qlt_stop_phase1(base_vha->vha_tgt.qla_tgt)) { 879 atomic_set(&base_tpg->lport_tpg_enabled, 0); 880 target_undepend_item(&se_tpg->tpg_group.cg_item); 881 } 882 complete(&base_tpg->tpg_base_comp); 883 } 884 885 static ssize_t tcm_qla2xxx_tpg_enable_store(struct config_item *item, 886 const char *page, size_t count) 887 { 888 struct se_portal_group *se_tpg = to_tpg(item); 889 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 890 struct tcm_qla2xxx_tpg, se_tpg); 891 unsigned long op; 892 int rc; 893 894 rc = kstrtoul(page, 0, &op); 895 if (rc < 0) { 896 pr_err("kstrtoul() returned %d\n", rc); 897 return -EINVAL; 898 } 899 if ((op != 1) && (op != 0)) { 900 pr_err("Illegal value for tpg_enable: %lu\n", op); 901 return -EINVAL; 902 } 903 if (op) { 904 if (atomic_read(&tpg->lport_tpg_enabled)) 905 return -EEXIST; 906 907 INIT_WORK(&tpg->tpg_base_work, tcm_qla2xxx_depend_tpg); 908 } else { 909 if (!atomic_read(&tpg->lport_tpg_enabled)) 910 return count; 911 912 INIT_WORK(&tpg->tpg_base_work, tcm_qla2xxx_undepend_tpg); 913 } 914 init_completion(&tpg->tpg_base_comp); 915 schedule_work(&tpg->tpg_base_work); 916 wait_for_completion(&tpg->tpg_base_comp); 917 918 if (op) { 919 if (!atomic_read(&tpg->lport_tpg_enabled)) 920 return -ENODEV; 921 } else { 922 if (atomic_read(&tpg->lport_tpg_enabled)) 923 return -EPERM; 924 } 925 return count; 926 } 927 928 static ssize_t tcm_qla2xxx_tpg_dynamic_sessions_show(struct config_item *item, 929 char *page) 930 { 931 return target_show_dynamic_sessions(to_tpg(item), page); 932 } 933 934 static ssize_t tcm_qla2xxx_tpg_fabric_prot_type_store(struct config_item *item, 935 const char *page, size_t count) 936 { 937 struct se_portal_group *se_tpg = to_tpg(item); 938 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 939 struct tcm_qla2xxx_tpg, se_tpg); 940 unsigned long val; 941 int ret = kstrtoul(page, 0, &val); 942 943 if (ret) { 944 pr_err("kstrtoul() returned %d for fabric_prot_type\n", ret); 945 return ret; 946 } 947 if (val != 0 && val != 1 && val != 3) { 948 pr_err("Invalid qla2xxx fabric_prot_type: %lu\n", val); 949 return -EINVAL; 950 } 951 tpg->tpg_attrib.fabric_prot_type = val; 952 953 return count; 954 } 955 956 static ssize_t tcm_qla2xxx_tpg_fabric_prot_type_show(struct config_item *item, 957 char *page) 958 { 959 struct se_portal_group *se_tpg = to_tpg(item); 960 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 961 struct tcm_qla2xxx_tpg, se_tpg); 962 963 return sprintf(page, "%d\n", tpg->tpg_attrib.fabric_prot_type); 964 } 965 966 CONFIGFS_ATTR(tcm_qla2xxx_tpg_, enable); 967 CONFIGFS_ATTR_RO(tcm_qla2xxx_tpg_, dynamic_sessions); 968 CONFIGFS_ATTR(tcm_qla2xxx_tpg_, fabric_prot_type); 969 970 static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = { 971 &tcm_qla2xxx_tpg_attr_enable, 972 &tcm_qla2xxx_tpg_attr_dynamic_sessions, 973 &tcm_qla2xxx_tpg_attr_fabric_prot_type, 974 NULL, 975 }; 976 977 static struct se_portal_group *tcm_qla2xxx_make_tpg( 978 struct se_wwn *wwn, 979 struct config_group *group, 980 const char *name) 981 { 982 struct tcm_qla2xxx_lport *lport = container_of(wwn, 983 struct tcm_qla2xxx_lport, lport_wwn); 984 struct tcm_qla2xxx_tpg *tpg; 985 unsigned long tpgt; 986 int ret; 987 988 if (strstr(name, "tpgt_") != name) 989 return ERR_PTR(-EINVAL); 990 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX) 991 return ERR_PTR(-EINVAL); 992 993 if ((tpgt != 1)) { 994 pr_err("In non NPIV mode, a single TPG=1 is used for HW port mappings\n"); 995 return ERR_PTR(-ENOSYS); 996 } 997 998 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL); 999 if (!tpg) { 1000 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n"); 1001 return ERR_PTR(-ENOMEM); 1002 } 1003 tpg->lport = lport; 1004 tpg->lport_tpgt = tpgt; 1005 /* 1006 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic 1007 * NodeACLs 1008 */ 1009 tpg->tpg_attrib.generate_node_acls = 1; 1010 tpg->tpg_attrib.demo_mode_write_protect = 1; 1011 tpg->tpg_attrib.cache_dynamic_acls = 1; 1012 tpg->tpg_attrib.demo_mode_login_only = 1; 1013 tpg->tpg_attrib.jam_host = 0; 1014 1015 ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP); 1016 if (ret < 0) { 1017 kfree(tpg); 1018 return NULL; 1019 } 1020 1021 lport->tpg_1 = tpg; 1022 1023 return &tpg->se_tpg; 1024 } 1025 1026 static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg) 1027 { 1028 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1029 struct tcm_qla2xxx_tpg, se_tpg); 1030 struct tcm_qla2xxx_lport *lport = tpg->lport; 1031 struct scsi_qla_host *vha = lport->qla_vha; 1032 /* 1033 * Call into qla2x_target.c LLD logic to shutdown the active 1034 * FC Nexuses and disable target mode operation for this qla_hw_data 1035 */ 1036 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stop) 1037 qlt_stop_phase1(vha->vha_tgt.qla_tgt); 1038 1039 core_tpg_deregister(se_tpg); 1040 /* 1041 * Clear local TPG=1 pointer for non NPIV mode. 1042 */ 1043 lport->tpg_1 = NULL; 1044 kfree(tpg); 1045 } 1046 1047 static ssize_t tcm_qla2xxx_npiv_tpg_enable_show(struct config_item *item, 1048 char *page) 1049 { 1050 return tcm_qla2xxx_tpg_enable_show(item, page); 1051 } 1052 1053 static ssize_t tcm_qla2xxx_npiv_tpg_enable_store(struct config_item *item, 1054 const char *page, size_t count) 1055 { 1056 struct se_portal_group *se_tpg = to_tpg(item); 1057 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn; 1058 struct tcm_qla2xxx_lport *lport = container_of(se_wwn, 1059 struct tcm_qla2xxx_lport, lport_wwn); 1060 struct scsi_qla_host *vha = lport->qla_vha; 1061 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1062 struct tcm_qla2xxx_tpg, se_tpg); 1063 unsigned long op; 1064 int rc; 1065 1066 rc = kstrtoul(page, 0, &op); 1067 if (rc < 0) { 1068 pr_err("kstrtoul() returned %d\n", rc); 1069 return -EINVAL; 1070 } 1071 if ((op != 1) && (op != 0)) { 1072 pr_err("Illegal value for tpg_enable: %lu\n", op); 1073 return -EINVAL; 1074 } 1075 if (op) { 1076 if (atomic_read(&tpg->lport_tpg_enabled)) 1077 return -EEXIST; 1078 1079 atomic_set(&tpg->lport_tpg_enabled, 1); 1080 qlt_enable_vha(vha); 1081 } else { 1082 if (!atomic_read(&tpg->lport_tpg_enabled)) 1083 return count; 1084 1085 atomic_set(&tpg->lport_tpg_enabled, 0); 1086 qlt_stop_phase1(vha->vha_tgt.qla_tgt); 1087 } 1088 1089 return count; 1090 } 1091 1092 CONFIGFS_ATTR(tcm_qla2xxx_npiv_tpg_, enable); 1093 1094 static struct configfs_attribute *tcm_qla2xxx_npiv_tpg_attrs[] = { 1095 &tcm_qla2xxx_npiv_tpg_attr_enable, 1096 NULL, 1097 }; 1098 1099 static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg( 1100 struct se_wwn *wwn, 1101 struct config_group *group, 1102 const char *name) 1103 { 1104 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1105 struct tcm_qla2xxx_lport, lport_wwn); 1106 struct tcm_qla2xxx_tpg *tpg; 1107 unsigned long tpgt; 1108 int ret; 1109 1110 if (strstr(name, "tpgt_") != name) 1111 return ERR_PTR(-EINVAL); 1112 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX) 1113 return ERR_PTR(-EINVAL); 1114 1115 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL); 1116 if (!tpg) { 1117 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n"); 1118 return ERR_PTR(-ENOMEM); 1119 } 1120 tpg->lport = lport; 1121 tpg->lport_tpgt = tpgt; 1122 1123 /* 1124 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic 1125 * NodeACLs 1126 */ 1127 tpg->tpg_attrib.generate_node_acls = 1; 1128 tpg->tpg_attrib.demo_mode_write_protect = 1; 1129 tpg->tpg_attrib.cache_dynamic_acls = 1; 1130 tpg->tpg_attrib.demo_mode_login_only = 1; 1131 1132 ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP); 1133 if (ret < 0) { 1134 kfree(tpg); 1135 return NULL; 1136 } 1137 lport->tpg_1 = tpg; 1138 return &tpg->se_tpg; 1139 } 1140 1141 /* 1142 * Expected to be called with struct qla_hw_data->tgt.sess_lock held 1143 */ 1144 static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_s_id( 1145 scsi_qla_host_t *vha, 1146 const uint8_t *s_id) 1147 { 1148 struct tcm_qla2xxx_lport *lport; 1149 struct se_node_acl *se_nacl; 1150 struct tcm_qla2xxx_nacl *nacl; 1151 u32 key; 1152 1153 lport = vha->vha_tgt.target_lport_ptr; 1154 if (!lport) { 1155 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1156 dump_stack(); 1157 return NULL; 1158 } 1159 1160 key = sid_to_key(s_id); 1161 pr_debug("find_sess_by_s_id: 0x%06x\n", key); 1162 1163 se_nacl = btree_lookup32(&lport->lport_fcport_map, key); 1164 if (!se_nacl) { 1165 pr_debug("Unable to locate s_id: 0x%06x\n", key); 1166 return NULL; 1167 } 1168 pr_debug("find_sess_by_s_id: located se_nacl: %p, initiatorname: %s\n", 1169 se_nacl, se_nacl->initiatorname); 1170 1171 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1172 if (!nacl->qla_tgt_sess) { 1173 pr_err("Unable to locate struct qla_tgt_sess\n"); 1174 return NULL; 1175 } 1176 1177 return nacl->qla_tgt_sess; 1178 } 1179 1180 /* 1181 * Expected to be called with struct qla_hw_data->tgt.sess_lock held 1182 */ 1183 static void tcm_qla2xxx_set_sess_by_s_id( 1184 struct tcm_qla2xxx_lport *lport, 1185 struct se_node_acl *new_se_nacl, 1186 struct tcm_qla2xxx_nacl *nacl, 1187 struct se_session *se_sess, 1188 struct qla_tgt_sess *qla_tgt_sess, 1189 uint8_t *s_id) 1190 { 1191 u32 key; 1192 void *slot; 1193 int rc; 1194 1195 key = sid_to_key(s_id); 1196 pr_debug("set_sess_by_s_id: %06x\n", key); 1197 1198 slot = btree_lookup32(&lport->lport_fcport_map, key); 1199 if (!slot) { 1200 if (new_se_nacl) { 1201 pr_debug("Setting up new fc_port entry to new_se_nacl\n"); 1202 nacl->nport_id = key; 1203 rc = btree_insert32(&lport->lport_fcport_map, key, 1204 new_se_nacl, GFP_ATOMIC); 1205 if (rc) 1206 printk(KERN_ERR "Unable to insert s_id into fcport_map: %06x\n", 1207 (int)key); 1208 } else { 1209 pr_debug("Wiping nonexisting fc_port entry\n"); 1210 } 1211 1212 qla_tgt_sess->se_sess = se_sess; 1213 nacl->qla_tgt_sess = qla_tgt_sess; 1214 return; 1215 } 1216 1217 if (nacl->qla_tgt_sess) { 1218 if (new_se_nacl == NULL) { 1219 pr_debug("Clearing existing nacl->qla_tgt_sess and fc_port entry\n"); 1220 btree_remove32(&lport->lport_fcport_map, key); 1221 nacl->qla_tgt_sess = NULL; 1222 return; 1223 } 1224 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_port entry\n"); 1225 btree_update32(&lport->lport_fcport_map, key, new_se_nacl); 1226 qla_tgt_sess->se_sess = se_sess; 1227 nacl->qla_tgt_sess = qla_tgt_sess; 1228 return; 1229 } 1230 1231 if (new_se_nacl == NULL) { 1232 pr_debug("Clearing existing fc_port entry\n"); 1233 btree_remove32(&lport->lport_fcport_map, key); 1234 return; 1235 } 1236 1237 pr_debug("Replacing existing fc_port entry w/o active nacl->qla_tgt_sess\n"); 1238 btree_update32(&lport->lport_fcport_map, key, new_se_nacl); 1239 qla_tgt_sess->se_sess = se_sess; 1240 nacl->qla_tgt_sess = qla_tgt_sess; 1241 1242 pr_debug("Setup nacl->qla_tgt_sess %p by s_id for se_nacl: %p, initiatorname: %s\n", 1243 nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname); 1244 } 1245 1246 /* 1247 * Expected to be called with struct qla_hw_data->tgt.sess_lock held 1248 */ 1249 static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_loop_id( 1250 scsi_qla_host_t *vha, 1251 const uint16_t loop_id) 1252 { 1253 struct tcm_qla2xxx_lport *lport; 1254 struct se_node_acl *se_nacl; 1255 struct tcm_qla2xxx_nacl *nacl; 1256 struct tcm_qla2xxx_fc_loopid *fc_loopid; 1257 1258 lport = vha->vha_tgt.target_lport_ptr; 1259 if (!lport) { 1260 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1261 dump_stack(); 1262 return NULL; 1263 } 1264 1265 pr_debug("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id); 1266 1267 fc_loopid = lport->lport_loopid_map + loop_id; 1268 se_nacl = fc_loopid->se_nacl; 1269 if (!se_nacl) { 1270 pr_debug("Unable to locate se_nacl by loop_id: 0x%04x\n", 1271 loop_id); 1272 return NULL; 1273 } 1274 1275 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1276 1277 if (!nacl->qla_tgt_sess) { 1278 pr_err("Unable to locate struct qla_tgt_sess\n"); 1279 return NULL; 1280 } 1281 1282 return nacl->qla_tgt_sess; 1283 } 1284 1285 /* 1286 * Expected to be called with struct qla_hw_data->tgt.sess_lock held 1287 */ 1288 static void tcm_qla2xxx_set_sess_by_loop_id( 1289 struct tcm_qla2xxx_lport *lport, 1290 struct se_node_acl *new_se_nacl, 1291 struct tcm_qla2xxx_nacl *nacl, 1292 struct se_session *se_sess, 1293 struct qla_tgt_sess *qla_tgt_sess, 1294 uint16_t loop_id) 1295 { 1296 struct se_node_acl *saved_nacl; 1297 struct tcm_qla2xxx_fc_loopid *fc_loopid; 1298 1299 pr_debug("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id); 1300 1301 fc_loopid = &((struct tcm_qla2xxx_fc_loopid *) 1302 lport->lport_loopid_map)[loop_id]; 1303 1304 saved_nacl = fc_loopid->se_nacl; 1305 if (!saved_nacl) { 1306 pr_debug("Setting up new fc_loopid->se_nacl to new_se_nacl\n"); 1307 fc_loopid->se_nacl = new_se_nacl; 1308 if (qla_tgt_sess->se_sess != se_sess) 1309 qla_tgt_sess->se_sess = se_sess; 1310 if (nacl->qla_tgt_sess != qla_tgt_sess) 1311 nacl->qla_tgt_sess = qla_tgt_sess; 1312 return; 1313 } 1314 1315 if (nacl->qla_tgt_sess) { 1316 if (new_se_nacl == NULL) { 1317 pr_debug("Clearing nacl->qla_tgt_sess and fc_loopid->se_nacl\n"); 1318 fc_loopid->se_nacl = NULL; 1319 nacl->qla_tgt_sess = NULL; 1320 return; 1321 } 1322 1323 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_loopid->se_nacl\n"); 1324 fc_loopid->se_nacl = new_se_nacl; 1325 if (qla_tgt_sess->se_sess != se_sess) 1326 qla_tgt_sess->se_sess = se_sess; 1327 if (nacl->qla_tgt_sess != qla_tgt_sess) 1328 nacl->qla_tgt_sess = qla_tgt_sess; 1329 return; 1330 } 1331 1332 if (new_se_nacl == NULL) { 1333 pr_debug("Clearing fc_loopid->se_nacl\n"); 1334 fc_loopid->se_nacl = NULL; 1335 return; 1336 } 1337 1338 pr_debug("Replacing existing fc_loopid->se_nacl w/o active nacl->qla_tgt_sess\n"); 1339 fc_loopid->se_nacl = new_se_nacl; 1340 if (qla_tgt_sess->se_sess != se_sess) 1341 qla_tgt_sess->se_sess = se_sess; 1342 if (nacl->qla_tgt_sess != qla_tgt_sess) 1343 nacl->qla_tgt_sess = qla_tgt_sess; 1344 1345 pr_debug("Setup nacl->qla_tgt_sess %p by loop_id for se_nacl: %p, initiatorname: %s\n", 1346 nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname); 1347 } 1348 1349 /* 1350 * Should always be called with qla_hw_data->tgt.sess_lock held. 1351 */ 1352 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *lport, 1353 struct tcm_qla2xxx_nacl *nacl, struct qla_tgt_sess *sess) 1354 { 1355 struct se_session *se_sess = sess->se_sess; 1356 unsigned char be_sid[3]; 1357 1358 be_sid[0] = sess->s_id.b.domain; 1359 be_sid[1] = sess->s_id.b.area; 1360 be_sid[2] = sess->s_id.b.al_pa; 1361 1362 tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess, 1363 sess, be_sid); 1364 tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess, 1365 sess, sess->loop_id); 1366 } 1367 1368 static void tcm_qla2xxx_free_session(struct qla_tgt_sess *sess) 1369 { 1370 struct qla_tgt *tgt = sess->tgt; 1371 struct qla_hw_data *ha = tgt->ha; 1372 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev); 1373 struct se_session *se_sess; 1374 struct tcm_qla2xxx_lport *lport; 1375 1376 BUG_ON(in_interrupt()); 1377 1378 se_sess = sess->se_sess; 1379 if (!se_sess) { 1380 pr_err("struct qla_tgt_sess->se_sess is NULL\n"); 1381 dump_stack(); 1382 return; 1383 } 1384 1385 lport = vha->vha_tgt.target_lport_ptr; 1386 if (!lport) { 1387 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1388 dump_stack(); 1389 return; 1390 } 1391 target_wait_for_sess_cmds(se_sess); 1392 1393 transport_deregister_session_configfs(sess->se_sess); 1394 transport_deregister_session(sess->se_sess); 1395 } 1396 1397 static int tcm_qla2xxx_session_cb(struct se_portal_group *se_tpg, 1398 struct se_session *se_sess, void *p) 1399 { 1400 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1401 struct tcm_qla2xxx_tpg, se_tpg); 1402 struct tcm_qla2xxx_lport *lport = tpg->lport; 1403 struct qla_hw_data *ha = lport->qla_vha->hw; 1404 struct se_node_acl *se_nacl = se_sess->se_node_acl; 1405 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl, 1406 struct tcm_qla2xxx_nacl, se_node_acl); 1407 struct qla_tgt_sess *qlat_sess = p; 1408 uint16_t loop_id = qlat_sess->loop_id; 1409 unsigned long flags; 1410 unsigned char be_sid[3]; 1411 1412 be_sid[0] = qlat_sess->s_id.b.domain; 1413 be_sid[1] = qlat_sess->s_id.b.area; 1414 be_sid[2] = qlat_sess->s_id.b.al_pa; 1415 1416 /* 1417 * And now setup se_nacl and session pointers into HW lport internal 1418 * mappings for fabric S_ID and LOOP_ID. 1419 */ 1420 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1421 tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl, 1422 se_sess, qlat_sess, be_sid); 1423 tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl, 1424 se_sess, qlat_sess, loop_id); 1425 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1426 1427 return 0; 1428 } 1429 1430 /* 1431 * Called via qlt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl() 1432 * to locate struct se_node_acl 1433 */ 1434 static int tcm_qla2xxx_check_initiator_node_acl( 1435 scsi_qla_host_t *vha, 1436 unsigned char *fc_wwpn, 1437 struct qla_tgt_sess *qlat_sess) 1438 { 1439 struct qla_hw_data *ha = vha->hw; 1440 struct tcm_qla2xxx_lport *lport; 1441 struct tcm_qla2xxx_tpg *tpg; 1442 struct se_session *se_sess; 1443 unsigned char port_name[36]; 1444 int num_tags = (ha->cur_fw_xcb_count) ? ha->cur_fw_xcb_count : 1445 TCM_QLA2XXX_DEFAULT_TAGS; 1446 1447 lport = vha->vha_tgt.target_lport_ptr; 1448 if (!lport) { 1449 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1450 dump_stack(); 1451 return -EINVAL; 1452 } 1453 /* 1454 * Locate the TPG=1 reference.. 1455 */ 1456 tpg = lport->tpg_1; 1457 if (!tpg) { 1458 pr_err("Unable to lcoate struct tcm_qla2xxx_lport->tpg_1\n"); 1459 return -EINVAL; 1460 } 1461 /* 1462 * Format the FCP Initiator port_name into colon seperated values to 1463 * match the format by tcm_qla2xxx explict ConfigFS NodeACLs. 1464 */ 1465 memset(&port_name, 0, 36); 1466 snprintf(port_name, sizeof(port_name), "%8phC", fc_wwpn); 1467 /* 1468 * Locate our struct se_node_acl either from an explict NodeACL created 1469 * via ConfigFS, or via running in TPG demo mode. 1470 */ 1471 se_sess = target_alloc_session(&tpg->se_tpg, num_tags, 1472 sizeof(struct qla_tgt_cmd), 1473 TARGET_PROT_ALL, port_name, 1474 qlat_sess, tcm_qla2xxx_session_cb); 1475 if (IS_ERR(se_sess)) 1476 return PTR_ERR(se_sess); 1477 1478 return 0; 1479 } 1480 1481 static void tcm_qla2xxx_update_sess(struct qla_tgt_sess *sess, port_id_t s_id, 1482 uint16_t loop_id, bool conf_compl_supported) 1483 { 1484 struct qla_tgt *tgt = sess->tgt; 1485 struct qla_hw_data *ha = tgt->ha; 1486 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev); 1487 struct tcm_qla2xxx_lport *lport = vha->vha_tgt.target_lport_ptr; 1488 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl; 1489 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl, 1490 struct tcm_qla2xxx_nacl, se_node_acl); 1491 u32 key; 1492 1493 1494 if (sess->loop_id != loop_id || sess->s_id.b24 != s_id.b24) 1495 pr_info("Updating session %p from port %8phC loop_id %d -> %d s_id %x:%x:%x -> %x:%x:%x\n", 1496 sess, sess->port_name, 1497 sess->loop_id, loop_id, sess->s_id.b.domain, 1498 sess->s_id.b.area, sess->s_id.b.al_pa, s_id.b.domain, 1499 s_id.b.area, s_id.b.al_pa); 1500 1501 if (sess->loop_id != loop_id) { 1502 /* 1503 * Because we can shuffle loop IDs around and we 1504 * update different sessions non-atomically, we might 1505 * have overwritten this session's old loop ID 1506 * already, and we might end up overwriting some other 1507 * session that will be updated later. So we have to 1508 * be extra careful and we can't warn about those things... 1509 */ 1510 if (lport->lport_loopid_map[sess->loop_id].se_nacl == se_nacl) 1511 lport->lport_loopid_map[sess->loop_id].se_nacl = NULL; 1512 1513 lport->lport_loopid_map[loop_id].se_nacl = se_nacl; 1514 1515 sess->loop_id = loop_id; 1516 } 1517 1518 if (sess->s_id.b24 != s_id.b24) { 1519 key = (((u32) sess->s_id.b.domain << 16) | 1520 ((u32) sess->s_id.b.area << 8) | 1521 ((u32) sess->s_id.b.al_pa)); 1522 1523 if (btree_lookup32(&lport->lport_fcport_map, key)) 1524 WARN(btree_remove32(&lport->lport_fcport_map, key) != se_nacl, 1525 "Found wrong se_nacl when updating s_id %x:%x:%x\n", 1526 sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa); 1527 else 1528 WARN(1, "No lport_fcport_map entry for s_id %x:%x:%x\n", 1529 sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa); 1530 1531 key = (((u32) s_id.b.domain << 16) | 1532 ((u32) s_id.b.area << 8) | 1533 ((u32) s_id.b.al_pa)); 1534 1535 if (btree_lookup32(&lport->lport_fcport_map, key)) { 1536 WARN(1, "Already have lport_fcport_map entry for s_id %x:%x:%x\n", 1537 s_id.b.domain, s_id.b.area, s_id.b.al_pa); 1538 btree_update32(&lport->lport_fcport_map, key, se_nacl); 1539 } else { 1540 btree_insert32(&lport->lport_fcport_map, key, se_nacl, GFP_ATOMIC); 1541 } 1542 1543 sess->s_id = s_id; 1544 nacl->nport_id = key; 1545 } 1546 1547 sess->conf_compl_supported = conf_compl_supported; 1548 1549 /* Reset logout parameters to default */ 1550 sess->logout_on_delete = 1; 1551 sess->keep_nport_handle = 0; 1552 } 1553 1554 /* 1555 * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path. 1556 */ 1557 static struct qla_tgt_func_tmpl tcm_qla2xxx_template = { 1558 .handle_cmd = tcm_qla2xxx_handle_cmd, 1559 .handle_data = tcm_qla2xxx_handle_data, 1560 .handle_dif_err = tcm_qla2xxx_handle_dif_err, 1561 .handle_tmr = tcm_qla2xxx_handle_tmr, 1562 .free_cmd = tcm_qla2xxx_free_cmd, 1563 .free_mcmd = tcm_qla2xxx_free_mcmd, 1564 .free_session = tcm_qla2xxx_free_session, 1565 .update_sess = tcm_qla2xxx_update_sess, 1566 .check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl, 1567 .find_sess_by_s_id = tcm_qla2xxx_find_sess_by_s_id, 1568 .find_sess_by_loop_id = tcm_qla2xxx_find_sess_by_loop_id, 1569 .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map, 1570 .shutdown_sess = tcm_qla2xxx_shutdown_sess, 1571 }; 1572 1573 static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport) 1574 { 1575 int rc; 1576 1577 rc = btree_init32(&lport->lport_fcport_map); 1578 if (rc) { 1579 pr_err("Unable to initialize lport->lport_fcport_map btree\n"); 1580 return rc; 1581 } 1582 1583 lport->lport_loopid_map = vmalloc(sizeof(struct tcm_qla2xxx_fc_loopid) * 1584 65536); 1585 if (!lport->lport_loopid_map) { 1586 pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n", 1587 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536); 1588 btree_destroy32(&lport->lport_fcport_map); 1589 return -ENOMEM; 1590 } 1591 memset(lport->lport_loopid_map, 0, sizeof(struct tcm_qla2xxx_fc_loopid) 1592 * 65536); 1593 pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n", 1594 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536); 1595 return 0; 1596 } 1597 1598 static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha, 1599 void *target_lport_ptr, 1600 u64 npiv_wwpn, u64 npiv_wwnn) 1601 { 1602 struct qla_hw_data *ha = vha->hw; 1603 struct tcm_qla2xxx_lport *lport = 1604 (struct tcm_qla2xxx_lport *)target_lport_ptr; 1605 /* 1606 * Setup tgt_ops, local pointer to vha and target_lport_ptr 1607 */ 1608 ha->tgt.tgt_ops = &tcm_qla2xxx_template; 1609 vha->vha_tgt.target_lport_ptr = target_lport_ptr; 1610 lport->qla_vha = vha; 1611 1612 return 0; 1613 } 1614 1615 static struct se_wwn *tcm_qla2xxx_make_lport( 1616 struct target_fabric_configfs *tf, 1617 struct config_group *group, 1618 const char *name) 1619 { 1620 struct tcm_qla2xxx_lport *lport; 1621 u64 wwpn; 1622 int ret = -ENODEV; 1623 1624 if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0) 1625 return ERR_PTR(-EINVAL); 1626 1627 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL); 1628 if (!lport) { 1629 pr_err("Unable to allocate struct tcm_qla2xxx_lport\n"); 1630 return ERR_PTR(-ENOMEM); 1631 } 1632 lport->lport_wwpn = wwpn; 1633 tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN, 1634 wwpn); 1635 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) wwpn); 1636 1637 ret = tcm_qla2xxx_init_lport(lport); 1638 if (ret != 0) 1639 goto out; 1640 1641 ret = qlt_lport_register(lport, wwpn, 0, 0, 1642 tcm_qla2xxx_lport_register_cb); 1643 if (ret != 0) 1644 goto out_lport; 1645 1646 return &lport->lport_wwn; 1647 out_lport: 1648 vfree(lport->lport_loopid_map); 1649 btree_destroy32(&lport->lport_fcport_map); 1650 out: 1651 kfree(lport); 1652 return ERR_PTR(ret); 1653 } 1654 1655 static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn) 1656 { 1657 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1658 struct tcm_qla2xxx_lport, lport_wwn); 1659 struct scsi_qla_host *vha = lport->qla_vha; 1660 struct se_node_acl *node; 1661 u32 key = 0; 1662 1663 /* 1664 * Call into qla2x_target.c LLD logic to complete the 1665 * shutdown of struct qla_tgt after the call to 1666 * qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above.. 1667 */ 1668 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stopped) 1669 qlt_stop_phase2(vha->vha_tgt.qla_tgt); 1670 1671 qlt_lport_deregister(vha); 1672 1673 vfree(lport->lport_loopid_map); 1674 btree_for_each_safe32(&lport->lport_fcport_map, key, node) 1675 btree_remove32(&lport->lport_fcport_map, key); 1676 btree_destroy32(&lport->lport_fcport_map); 1677 kfree(lport); 1678 } 1679 1680 static int tcm_qla2xxx_lport_register_npiv_cb(struct scsi_qla_host *base_vha, 1681 void *target_lport_ptr, 1682 u64 npiv_wwpn, u64 npiv_wwnn) 1683 { 1684 struct fc_vport *vport; 1685 struct Scsi_Host *sh = base_vha->host; 1686 struct scsi_qla_host *npiv_vha; 1687 struct tcm_qla2xxx_lport *lport = 1688 (struct tcm_qla2xxx_lport *)target_lport_ptr; 1689 struct tcm_qla2xxx_lport *base_lport = 1690 (struct tcm_qla2xxx_lport *)base_vha->vha_tgt.target_lport_ptr; 1691 struct fc_vport_identifiers vport_id; 1692 1693 if (!qla_tgt_mode_enabled(base_vha)) { 1694 pr_err("qla2xxx base_vha not enabled for target mode\n"); 1695 return -EPERM; 1696 } 1697 1698 if (!base_lport || !base_lport->tpg_1 || 1699 !atomic_read(&base_lport->tpg_1->lport_tpg_enabled)) { 1700 pr_err("qla2xxx base_lport or tpg_1 not available\n"); 1701 return -EPERM; 1702 } 1703 1704 memset(&vport_id, 0, sizeof(vport_id)); 1705 vport_id.port_name = npiv_wwpn; 1706 vport_id.node_name = npiv_wwnn; 1707 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR; 1708 vport_id.vport_type = FC_PORTTYPE_NPIV; 1709 vport_id.disable = false; 1710 1711 vport = fc_vport_create(sh, 0, &vport_id); 1712 if (!vport) { 1713 pr_err("fc_vport_create failed for qla2xxx_npiv\n"); 1714 return -ENODEV; 1715 } 1716 /* 1717 * Setup local pointer to NPIV vhba + target_lport_ptr 1718 */ 1719 npiv_vha = (struct scsi_qla_host *)vport->dd_data; 1720 npiv_vha->vha_tgt.target_lport_ptr = target_lport_ptr; 1721 lport->qla_vha = npiv_vha; 1722 scsi_host_get(npiv_vha->host); 1723 return 0; 1724 } 1725 1726 1727 static struct se_wwn *tcm_qla2xxx_npiv_make_lport( 1728 struct target_fabric_configfs *tf, 1729 struct config_group *group, 1730 const char *name) 1731 { 1732 struct tcm_qla2xxx_lport *lport; 1733 u64 phys_wwpn, npiv_wwpn, npiv_wwnn; 1734 char *p, tmp[128]; 1735 int ret; 1736 1737 snprintf(tmp, 128, "%s", name); 1738 1739 p = strchr(tmp, '@'); 1740 if (!p) { 1741 pr_err("Unable to locate NPIV '@' seperator\n"); 1742 return ERR_PTR(-EINVAL); 1743 } 1744 *p++ = '\0'; 1745 1746 if (tcm_qla2xxx_parse_wwn(tmp, &phys_wwpn, 1) < 0) 1747 return ERR_PTR(-EINVAL); 1748 1749 if (tcm_qla2xxx_npiv_parse_wwn(p, strlen(p)+1, 1750 &npiv_wwpn, &npiv_wwnn) < 0) 1751 return ERR_PTR(-EINVAL); 1752 1753 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL); 1754 if (!lport) { 1755 pr_err("Unable to allocate struct tcm_qla2xxx_lport for NPIV\n"); 1756 return ERR_PTR(-ENOMEM); 1757 } 1758 lport->lport_npiv_wwpn = npiv_wwpn; 1759 lport->lport_npiv_wwnn = npiv_wwnn; 1760 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) npiv_wwpn); 1761 1762 ret = tcm_qla2xxx_init_lport(lport); 1763 if (ret != 0) 1764 goto out; 1765 1766 ret = qlt_lport_register(lport, phys_wwpn, npiv_wwpn, npiv_wwnn, 1767 tcm_qla2xxx_lport_register_npiv_cb); 1768 if (ret != 0) 1769 goto out_lport; 1770 1771 return &lport->lport_wwn; 1772 out_lport: 1773 vfree(lport->lport_loopid_map); 1774 btree_destroy32(&lport->lport_fcport_map); 1775 out: 1776 kfree(lport); 1777 return ERR_PTR(ret); 1778 } 1779 1780 static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn) 1781 { 1782 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1783 struct tcm_qla2xxx_lport, lport_wwn); 1784 struct scsi_qla_host *npiv_vha = lport->qla_vha; 1785 struct qla_hw_data *ha = npiv_vha->hw; 1786 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 1787 1788 scsi_host_put(npiv_vha->host); 1789 /* 1790 * Notify libfc that we want to release the vha->fc_vport 1791 */ 1792 fc_vport_terminate(npiv_vha->fc_vport); 1793 scsi_host_put(base_vha->host); 1794 kfree(lport); 1795 } 1796 1797 1798 static ssize_t tcm_qla2xxx_wwn_version_show(struct config_item *item, 1799 char *page) 1800 { 1801 return sprintf(page, 1802 "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s on " 1803 UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname, 1804 utsname()->machine); 1805 } 1806 1807 CONFIGFS_ATTR_RO(tcm_qla2xxx_wwn_, version); 1808 1809 static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = { 1810 &tcm_qla2xxx_wwn_attr_version, 1811 NULL, 1812 }; 1813 1814 static const struct target_core_fabric_ops tcm_qla2xxx_ops = { 1815 .module = THIS_MODULE, 1816 .name = "qla2xxx", 1817 .node_acl_size = sizeof(struct tcm_qla2xxx_nacl), 1818 /* 1819 * XXX: Limit assumes single page per scatter-gather-list entry. 1820 * Current maximum is ~4.9 MB per se_cmd->t_data_sg with PAGE_SIZE=4096 1821 */ 1822 .max_data_sg_nents = 1200, 1823 .get_fabric_name = tcm_qla2xxx_get_fabric_name, 1824 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn, 1825 .tpg_get_tag = tcm_qla2xxx_get_tag, 1826 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode, 1827 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache, 1828 .tpg_check_demo_mode_write_protect = 1829 tcm_qla2xxx_check_demo_write_protect, 1830 .tpg_check_prod_mode_write_protect = 1831 tcm_qla2xxx_check_prod_write_protect, 1832 .tpg_check_prot_fabric_only = tcm_qla2xxx_check_prot_fabric_only, 1833 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only, 1834 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index, 1835 .check_stop_free = tcm_qla2xxx_check_stop_free, 1836 .release_cmd = tcm_qla2xxx_release_cmd, 1837 .close_session = tcm_qla2xxx_close_session, 1838 .sess_get_index = tcm_qla2xxx_sess_get_index, 1839 .sess_get_initiator_sid = NULL, 1840 .write_pending = tcm_qla2xxx_write_pending, 1841 .write_pending_status = tcm_qla2xxx_write_pending_status, 1842 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs, 1843 .get_cmd_state = tcm_qla2xxx_get_cmd_state, 1844 .queue_data_in = tcm_qla2xxx_queue_data_in, 1845 .queue_status = tcm_qla2xxx_queue_status, 1846 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp, 1847 .aborted_task = tcm_qla2xxx_aborted_task, 1848 /* 1849 * Setup function pointers for generic logic in 1850 * target_core_fabric_configfs.c 1851 */ 1852 .fabric_make_wwn = tcm_qla2xxx_make_lport, 1853 .fabric_drop_wwn = tcm_qla2xxx_drop_lport, 1854 .fabric_make_tpg = tcm_qla2xxx_make_tpg, 1855 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg, 1856 .fabric_init_nodeacl = tcm_qla2xxx_init_nodeacl, 1857 1858 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs, 1859 .tfc_tpg_base_attrs = tcm_qla2xxx_tpg_attrs, 1860 .tfc_tpg_attrib_attrs = tcm_qla2xxx_tpg_attrib_attrs, 1861 }; 1862 1863 static const struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = { 1864 .module = THIS_MODULE, 1865 .name = "qla2xxx_npiv", 1866 .node_acl_size = sizeof(struct tcm_qla2xxx_nacl), 1867 .get_fabric_name = tcm_qla2xxx_npiv_get_fabric_name, 1868 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn, 1869 .tpg_get_tag = tcm_qla2xxx_get_tag, 1870 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode, 1871 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache, 1872 .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_demo_mode, 1873 .tpg_check_prod_mode_write_protect = 1874 tcm_qla2xxx_check_prod_write_protect, 1875 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only, 1876 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index, 1877 .check_stop_free = tcm_qla2xxx_check_stop_free, 1878 .release_cmd = tcm_qla2xxx_release_cmd, 1879 .close_session = tcm_qla2xxx_close_session, 1880 .sess_get_index = tcm_qla2xxx_sess_get_index, 1881 .sess_get_initiator_sid = NULL, 1882 .write_pending = tcm_qla2xxx_write_pending, 1883 .write_pending_status = tcm_qla2xxx_write_pending_status, 1884 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs, 1885 .get_cmd_state = tcm_qla2xxx_get_cmd_state, 1886 .queue_data_in = tcm_qla2xxx_queue_data_in, 1887 .queue_status = tcm_qla2xxx_queue_status, 1888 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp, 1889 .aborted_task = tcm_qla2xxx_aborted_task, 1890 /* 1891 * Setup function pointers for generic logic in 1892 * target_core_fabric_configfs.c 1893 */ 1894 .fabric_make_wwn = tcm_qla2xxx_npiv_make_lport, 1895 .fabric_drop_wwn = tcm_qla2xxx_npiv_drop_lport, 1896 .fabric_make_tpg = tcm_qla2xxx_npiv_make_tpg, 1897 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg, 1898 .fabric_init_nodeacl = tcm_qla2xxx_init_nodeacl, 1899 1900 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs, 1901 .tfc_tpg_base_attrs = tcm_qla2xxx_npiv_tpg_attrs, 1902 }; 1903 1904 static int tcm_qla2xxx_register_configfs(void) 1905 { 1906 int ret; 1907 1908 pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on " 1909 UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname, 1910 utsname()->machine); 1911 1912 ret = target_register_template(&tcm_qla2xxx_ops); 1913 if (ret) 1914 return ret; 1915 1916 ret = target_register_template(&tcm_qla2xxx_npiv_ops); 1917 if (ret) 1918 goto out_fabric; 1919 1920 tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free", 1921 WQ_MEM_RECLAIM, 0); 1922 if (!tcm_qla2xxx_free_wq) { 1923 ret = -ENOMEM; 1924 goto out_fabric_npiv; 1925 } 1926 1927 tcm_qla2xxx_cmd_wq = alloc_workqueue("tcm_qla2xxx_cmd", 0, 0); 1928 if (!tcm_qla2xxx_cmd_wq) { 1929 ret = -ENOMEM; 1930 goto out_free_wq; 1931 } 1932 1933 return 0; 1934 1935 out_free_wq: 1936 destroy_workqueue(tcm_qla2xxx_free_wq); 1937 out_fabric_npiv: 1938 target_unregister_template(&tcm_qla2xxx_npiv_ops); 1939 out_fabric: 1940 target_unregister_template(&tcm_qla2xxx_ops); 1941 return ret; 1942 } 1943 1944 static void tcm_qla2xxx_deregister_configfs(void) 1945 { 1946 destroy_workqueue(tcm_qla2xxx_cmd_wq); 1947 destroy_workqueue(tcm_qla2xxx_free_wq); 1948 1949 target_unregister_template(&tcm_qla2xxx_ops); 1950 target_unregister_template(&tcm_qla2xxx_npiv_ops); 1951 } 1952 1953 static int __init tcm_qla2xxx_init(void) 1954 { 1955 int ret; 1956 1957 ret = tcm_qla2xxx_register_configfs(); 1958 if (ret < 0) 1959 return ret; 1960 1961 return 0; 1962 } 1963 1964 static void __exit tcm_qla2xxx_exit(void) 1965 { 1966 tcm_qla2xxx_deregister_configfs(); 1967 } 1968 1969 MODULE_DESCRIPTION("TCM QLA24XX+ series NPIV enabled fabric driver"); 1970 MODULE_LICENSE("GPL"); 1971 module_init(tcm_qla2xxx_init); 1972 module_exit(tcm_qla2xxx_exit); 1973