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 #include <target/target_core_fabric_configfs.h> 47 #include <target/configfs_macros.h> 48 49 #include "qla_def.h" 50 #include "qla_target.h" 51 #include "tcm_qla2xxx.h" 52 53 static struct workqueue_struct *tcm_qla2xxx_free_wq; 54 static struct workqueue_struct *tcm_qla2xxx_cmd_wq; 55 56 /* 57 * Parse WWN. 58 * If strict, we require lower-case hex and colon separators to be sure 59 * the name is the same as what would be generated by ft_format_wwn() 60 * so the name and wwn are mapped one-to-one. 61 */ 62 static ssize_t tcm_qla2xxx_parse_wwn(const char *name, u64 *wwn, int strict) 63 { 64 const char *cp; 65 char c; 66 u32 nibble; 67 u32 byte = 0; 68 u32 pos = 0; 69 u32 err; 70 71 *wwn = 0; 72 for (cp = name; cp < &name[TCM_QLA2XXX_NAMELEN - 1]; cp++) { 73 c = *cp; 74 if (c == '\n' && cp[1] == '\0') 75 continue; 76 if (strict && pos++ == 2 && byte++ < 7) { 77 pos = 0; 78 if (c == ':') 79 continue; 80 err = 1; 81 goto fail; 82 } 83 if (c == '\0') { 84 err = 2; 85 if (strict && byte != 8) 86 goto fail; 87 return cp - name; 88 } 89 err = 3; 90 if (isdigit(c)) 91 nibble = c - '0'; 92 else if (isxdigit(c) && (islower(c) || !strict)) 93 nibble = tolower(c) - 'a' + 10; 94 else 95 goto fail; 96 *wwn = (*wwn << 4) | nibble; 97 } 98 err = 4; 99 fail: 100 pr_debug("err %u len %zu pos %u byte %u\n", 101 err, cp - name, pos, byte); 102 return -1; 103 } 104 105 static ssize_t tcm_qla2xxx_format_wwn(char *buf, size_t len, u64 wwn) 106 { 107 u8 b[8]; 108 109 put_unaligned_be64(wwn, b); 110 return snprintf(buf, len, 111 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x", 112 b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7]); 113 } 114 115 static char *tcm_qla2xxx_get_fabric_name(void) 116 { 117 return "qla2xxx"; 118 } 119 120 /* 121 * From drivers/scsi/scsi_transport_fc.c:fc_parse_wwn 122 */ 123 static int tcm_qla2xxx_npiv_extract_wwn(const char *ns, u64 *nm) 124 { 125 unsigned int i, j; 126 u8 wwn[8]; 127 128 memset(wwn, 0, sizeof(wwn)); 129 130 /* Validate and store the new name */ 131 for (i = 0, j = 0; i < 16; i++) { 132 int value; 133 134 value = hex_to_bin(*ns++); 135 if (value >= 0) 136 j = (j << 4) | value; 137 else 138 return -EINVAL; 139 140 if (i % 2) { 141 wwn[i/2] = j & 0xff; 142 j = 0; 143 } 144 } 145 146 *nm = wwn_to_u64(wwn); 147 return 0; 148 } 149 150 /* 151 * This parsing logic follows drivers/scsi/scsi_transport_fc.c: 152 * store_fc_host_vport_create() 153 */ 154 static int tcm_qla2xxx_npiv_parse_wwn( 155 const char *name, 156 size_t count, 157 u64 *wwpn, 158 u64 *wwnn) 159 { 160 unsigned int cnt = count; 161 int rc; 162 163 *wwpn = 0; 164 *wwnn = 0; 165 166 /* count may include a LF at end of string */ 167 if (name[cnt-1] == '\n' || name[cnt-1] == 0) 168 cnt--; 169 170 /* validate we have enough characters for WWPN */ 171 if ((cnt != (16+1+16)) || (name[16] != ':')) 172 return -EINVAL; 173 174 rc = tcm_qla2xxx_npiv_extract_wwn(&name[0], wwpn); 175 if (rc != 0) 176 return rc; 177 178 rc = tcm_qla2xxx_npiv_extract_wwn(&name[17], wwnn); 179 if (rc != 0) 180 return rc; 181 182 return 0; 183 } 184 185 static char *tcm_qla2xxx_npiv_get_fabric_name(void) 186 { 187 return "qla2xxx_npiv"; 188 } 189 190 static char *tcm_qla2xxx_get_fabric_wwn(struct se_portal_group *se_tpg) 191 { 192 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 193 struct tcm_qla2xxx_tpg, se_tpg); 194 struct tcm_qla2xxx_lport *lport = tpg->lport; 195 196 return lport->lport_naa_name; 197 } 198 199 static u16 tcm_qla2xxx_get_tag(struct se_portal_group *se_tpg) 200 { 201 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 202 struct tcm_qla2xxx_tpg, se_tpg); 203 return tpg->lport_tpgt; 204 } 205 206 static int tcm_qla2xxx_check_demo_mode(struct se_portal_group *se_tpg) 207 { 208 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 209 struct tcm_qla2xxx_tpg, se_tpg); 210 211 return tpg->tpg_attrib.generate_node_acls; 212 } 213 214 static int tcm_qla2xxx_check_demo_mode_cache(struct se_portal_group *se_tpg) 215 { 216 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 217 struct tcm_qla2xxx_tpg, se_tpg); 218 219 return tpg->tpg_attrib.cache_dynamic_acls; 220 } 221 222 static int tcm_qla2xxx_check_demo_write_protect(struct se_portal_group *se_tpg) 223 { 224 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 225 struct tcm_qla2xxx_tpg, se_tpg); 226 227 return tpg->tpg_attrib.demo_mode_write_protect; 228 } 229 230 static int tcm_qla2xxx_check_prod_write_protect(struct se_portal_group *se_tpg) 231 { 232 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 233 struct tcm_qla2xxx_tpg, se_tpg); 234 235 return tpg->tpg_attrib.prod_mode_write_protect; 236 } 237 238 static int tcm_qla2xxx_check_demo_mode_login_only(struct se_portal_group *se_tpg) 239 { 240 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 241 struct tcm_qla2xxx_tpg, se_tpg); 242 243 return tpg->tpg_attrib.demo_mode_login_only; 244 } 245 246 static int tcm_qla2xxx_check_prot_fabric_only(struct se_portal_group *se_tpg) 247 { 248 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 249 struct tcm_qla2xxx_tpg, se_tpg); 250 251 return tpg->tpg_attrib.fabric_prot_type; 252 } 253 254 static u32 tcm_qla2xxx_tpg_get_inst_index(struct se_portal_group *se_tpg) 255 { 256 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 257 struct tcm_qla2xxx_tpg, se_tpg); 258 259 return tpg->lport_tpgt; 260 } 261 262 static void tcm_qla2xxx_complete_mcmd(struct work_struct *work) 263 { 264 struct qla_tgt_mgmt_cmd *mcmd = container_of(work, 265 struct qla_tgt_mgmt_cmd, free_work); 266 267 transport_generic_free_cmd(&mcmd->se_cmd, 0); 268 } 269 270 /* 271 * Called from qla_target_template->free_mcmd(), and will call 272 * tcm_qla2xxx_release_cmd() via normal struct target_core_fabric_ops 273 * release callback. qla_hw_data->hardware_lock is expected to be held 274 */ 275 static void tcm_qla2xxx_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd) 276 { 277 INIT_WORK(&mcmd->free_work, tcm_qla2xxx_complete_mcmd); 278 queue_work(tcm_qla2xxx_free_wq, &mcmd->free_work); 279 } 280 281 static void tcm_qla2xxx_complete_free(struct work_struct *work) 282 { 283 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 284 285 cmd->cmd_in_wq = 0; 286 287 WARN_ON(cmd->cmd_flags & BIT_16); 288 289 cmd->cmd_flags |= BIT_16; 290 transport_generic_free_cmd(&cmd->se_cmd, 0); 291 } 292 293 /* 294 * Called from qla_target_template->free_cmd(), and will call 295 * tcm_qla2xxx_release_cmd via normal struct target_core_fabric_ops 296 * release callback. qla_hw_data->hardware_lock is expected to be held 297 */ 298 static void tcm_qla2xxx_free_cmd(struct qla_tgt_cmd *cmd) 299 { 300 cmd->cmd_in_wq = 1; 301 INIT_WORK(&cmd->work, tcm_qla2xxx_complete_free); 302 queue_work(tcm_qla2xxx_free_wq, &cmd->work); 303 } 304 305 /* 306 * Called from struct target_core_fabric_ops->check_stop_free() context 307 */ 308 static int tcm_qla2xxx_check_stop_free(struct se_cmd *se_cmd) 309 { 310 struct qla_tgt_cmd *cmd; 311 312 if ((se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) == 0) { 313 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd); 314 cmd->cmd_flags |= BIT_14; 315 } 316 317 return target_put_sess_cmd(se_cmd); 318 } 319 320 /* tcm_qla2xxx_release_cmd - Callback from TCM Core to release underlying 321 * fabric descriptor @se_cmd command to release 322 */ 323 static void tcm_qla2xxx_release_cmd(struct se_cmd *se_cmd) 324 { 325 struct qla_tgt_cmd *cmd; 326 327 if (se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) { 328 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd, 329 struct qla_tgt_mgmt_cmd, se_cmd); 330 qlt_free_mcmd(mcmd); 331 return; 332 } 333 334 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd); 335 qlt_free_cmd(cmd); 336 } 337 338 static int tcm_qla2xxx_shutdown_session(struct se_session *se_sess) 339 { 340 struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr; 341 struct scsi_qla_host *vha; 342 unsigned long flags; 343 344 BUG_ON(!sess); 345 vha = sess->vha; 346 347 spin_lock_irqsave(&vha->hw->hardware_lock, flags); 348 target_sess_cmd_list_set_waiting(se_sess); 349 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags); 350 351 return 1; 352 } 353 354 static void tcm_qla2xxx_close_session(struct se_session *se_sess) 355 { 356 struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr; 357 struct scsi_qla_host *vha; 358 unsigned long flags; 359 360 BUG_ON(!sess); 361 vha = sess->vha; 362 363 spin_lock_irqsave(&vha->hw->hardware_lock, flags); 364 qlt_unreg_sess(sess); 365 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags); 366 } 367 368 static u32 tcm_qla2xxx_sess_get_index(struct se_session *se_sess) 369 { 370 return 0; 371 } 372 373 static int tcm_qla2xxx_write_pending(struct se_cmd *se_cmd) 374 { 375 struct qla_tgt_cmd *cmd = container_of(se_cmd, 376 struct qla_tgt_cmd, se_cmd); 377 378 cmd->bufflen = se_cmd->data_length; 379 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd); 380 381 cmd->sg_cnt = se_cmd->t_data_nents; 382 cmd->sg = se_cmd->t_data_sg; 383 384 cmd->prot_sg_cnt = se_cmd->t_prot_nents; 385 cmd->prot_sg = se_cmd->t_prot_sg; 386 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size; 387 se_cmd->pi_err = 0; 388 389 /* 390 * qla_target.c:qlt_rdy_to_xfer() will call pci_map_sg() to setup 391 * the SGL mappings into PCIe memory for incoming FCP WRITE data. 392 */ 393 return qlt_rdy_to_xfer(cmd); 394 } 395 396 static int tcm_qla2xxx_write_pending_status(struct se_cmd *se_cmd) 397 { 398 unsigned long flags; 399 /* 400 * Check for WRITE_PENDING status to determine if we need to wait for 401 * CTIO aborts to be posted via hardware in tcm_qla2xxx_handle_data(). 402 */ 403 spin_lock_irqsave(&se_cmd->t_state_lock, flags); 404 if (se_cmd->t_state == TRANSPORT_WRITE_PENDING || 405 se_cmd->t_state == TRANSPORT_COMPLETE_QF_WP) { 406 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags); 407 wait_for_completion_timeout(&se_cmd->t_transport_stop_comp, 408 3000); 409 return 0; 410 } 411 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags); 412 413 return 0; 414 } 415 416 static void tcm_qla2xxx_set_default_node_attrs(struct se_node_acl *nacl) 417 { 418 return; 419 } 420 421 static int tcm_qla2xxx_get_cmd_state(struct se_cmd *se_cmd) 422 { 423 return 0; 424 } 425 426 /* 427 * Called from process context in qla_target.c:qlt_do_work() code 428 */ 429 static int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd, 430 unsigned char *cdb, uint32_t data_length, int fcp_task_attr, 431 int data_dir, int bidi) 432 { 433 struct se_cmd *se_cmd = &cmd->se_cmd; 434 struct se_session *se_sess; 435 struct qla_tgt_sess *sess; 436 int flags = TARGET_SCF_ACK_KREF; 437 438 if (bidi) 439 flags |= TARGET_SCF_BIDI_OP; 440 441 sess = cmd->sess; 442 if (!sess) { 443 pr_err("Unable to locate struct qla_tgt_sess from qla_tgt_cmd\n"); 444 return -EINVAL; 445 } 446 447 se_sess = sess->se_sess; 448 if (!se_sess) { 449 pr_err("Unable to locate active struct se_session\n"); 450 return -EINVAL; 451 } 452 453 return target_submit_cmd(se_cmd, se_sess, cdb, &cmd->sense_buffer[0], 454 cmd->unpacked_lun, data_length, fcp_task_attr, 455 data_dir, flags); 456 } 457 458 static void tcm_qla2xxx_handle_data_work(struct work_struct *work) 459 { 460 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 461 462 /* 463 * Ensure that the complete FCP WRITE payload has been received. 464 * Otherwise return an exception via CHECK_CONDITION status. 465 */ 466 cmd->cmd_in_wq = 0; 467 cmd->cmd_flags |= BIT_11; 468 if (!cmd->write_data_transferred) { 469 /* 470 * Check if se_cmd has already been aborted via LUN_RESET, and 471 * waiting upon completion in tcm_qla2xxx_write_pending_status() 472 */ 473 if (cmd->se_cmd.transport_state & CMD_T_ABORTED) { 474 complete(&cmd->se_cmd.t_transport_stop_comp); 475 return; 476 } 477 478 if (cmd->se_cmd.pi_err) 479 transport_generic_request_failure(&cmd->se_cmd, 480 cmd->se_cmd.pi_err); 481 else 482 transport_generic_request_failure(&cmd->se_cmd, 483 TCM_CHECK_CONDITION_ABORT_CMD); 484 485 return; 486 } 487 488 return target_execute_cmd(&cmd->se_cmd); 489 } 490 491 /* 492 * Called from qla_target.c:qlt_do_ctio_completion() 493 */ 494 static void tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd) 495 { 496 cmd->cmd_flags |= BIT_10; 497 cmd->cmd_in_wq = 1; 498 INIT_WORK(&cmd->work, tcm_qla2xxx_handle_data_work); 499 queue_work(tcm_qla2xxx_free_wq, &cmd->work); 500 } 501 502 static void tcm_qla2xxx_handle_dif_work(struct work_struct *work) 503 { 504 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 505 506 /* take an extra kref to prevent cmd free too early. 507 * need to wait for SCSI status/check condition to 508 * finish responding generate by transport_generic_request_failure. 509 */ 510 kref_get(&cmd->se_cmd.cmd_kref); 511 transport_generic_request_failure(&cmd->se_cmd, cmd->se_cmd.pi_err); 512 } 513 514 /* 515 * Called from qla_target.c:qlt_do_ctio_completion() 516 */ 517 static void tcm_qla2xxx_handle_dif_err(struct qla_tgt_cmd *cmd) 518 { 519 INIT_WORK(&cmd->work, tcm_qla2xxx_handle_dif_work); 520 queue_work(tcm_qla2xxx_free_wq, &cmd->work); 521 } 522 523 /* 524 * Called from qla_target.c:qlt_issue_task_mgmt() 525 */ 526 static int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *mcmd, uint32_t lun, 527 uint8_t tmr_func, uint32_t tag) 528 { 529 struct qla_tgt_sess *sess = mcmd->sess; 530 struct se_cmd *se_cmd = &mcmd->se_cmd; 531 532 return target_submit_tmr(se_cmd, sess->se_sess, NULL, lun, mcmd, 533 tmr_func, GFP_ATOMIC, tag, TARGET_SCF_ACK_KREF); 534 } 535 536 static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd) 537 { 538 struct qla_tgt_cmd *cmd = container_of(se_cmd, 539 struct qla_tgt_cmd, se_cmd); 540 541 cmd->cmd_flags |= BIT_4; 542 cmd->bufflen = se_cmd->data_length; 543 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd); 544 cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED); 545 546 cmd->sg_cnt = se_cmd->t_data_nents; 547 cmd->sg = se_cmd->t_data_sg; 548 cmd->offset = 0; 549 cmd->cmd_flags |= BIT_3; 550 551 cmd->prot_sg_cnt = se_cmd->t_prot_nents; 552 cmd->prot_sg = se_cmd->t_prot_sg; 553 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size; 554 se_cmd->pi_err = 0; 555 556 /* 557 * Now queue completed DATA_IN the qla2xxx LLD and response ring 558 */ 559 return qlt_xmit_response(cmd, QLA_TGT_XMIT_DATA|QLA_TGT_XMIT_STATUS, 560 se_cmd->scsi_status); 561 } 562 563 static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd) 564 { 565 struct qla_tgt_cmd *cmd = container_of(se_cmd, 566 struct qla_tgt_cmd, se_cmd); 567 int xmit_type = QLA_TGT_XMIT_STATUS; 568 569 cmd->bufflen = se_cmd->data_length; 570 cmd->sg = NULL; 571 cmd->sg_cnt = 0; 572 cmd->offset = 0; 573 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd); 574 cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED); 575 if (cmd->cmd_flags & BIT_5) { 576 pr_crit("Bit_5 already set for cmd = %p.\n", cmd); 577 dump_stack(); 578 } 579 cmd->cmd_flags |= BIT_5; 580 581 if (se_cmd->data_direction == DMA_FROM_DEVICE) { 582 /* 583 * For FCP_READ with CHECK_CONDITION status, clear cmd->bufflen 584 * for qla_tgt_xmit_response LLD code 585 */ 586 if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) { 587 se_cmd->se_cmd_flags &= ~SCF_OVERFLOW_BIT; 588 se_cmd->residual_count = 0; 589 } 590 se_cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT; 591 se_cmd->residual_count += se_cmd->data_length; 592 593 cmd->bufflen = 0; 594 } 595 /* 596 * Now queue status response to qla2xxx LLD code and response ring 597 */ 598 return qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status); 599 } 600 601 static void tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd) 602 { 603 struct se_tmr_req *se_tmr = se_cmd->se_tmr_req; 604 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd, 605 struct qla_tgt_mgmt_cmd, se_cmd); 606 607 pr_debug("queue_tm_rsp: mcmd: %p func: 0x%02x response: 0x%02x\n", 608 mcmd, se_tmr->function, se_tmr->response); 609 /* 610 * Do translation between TCM TM response codes and 611 * QLA2xxx FC TM response codes. 612 */ 613 switch (se_tmr->response) { 614 case TMR_FUNCTION_COMPLETE: 615 mcmd->fc_tm_rsp = FC_TM_SUCCESS; 616 break; 617 case TMR_TASK_DOES_NOT_EXIST: 618 mcmd->fc_tm_rsp = FC_TM_BAD_CMD; 619 break; 620 case TMR_FUNCTION_REJECTED: 621 mcmd->fc_tm_rsp = FC_TM_REJECT; 622 break; 623 case TMR_LUN_DOES_NOT_EXIST: 624 default: 625 mcmd->fc_tm_rsp = FC_TM_FAILED; 626 break; 627 } 628 /* 629 * Queue the TM response to QLA2xxx LLD to build a 630 * CTIO response packet. 631 */ 632 qlt_xmit_tm_rsp(mcmd); 633 } 634 635 static void tcm_qla2xxx_aborted_task(struct se_cmd *se_cmd) 636 { 637 struct qla_tgt_cmd *cmd = container_of(se_cmd, 638 struct qla_tgt_cmd, se_cmd); 639 struct scsi_qla_host *vha = cmd->vha; 640 struct qla_hw_data *ha = vha->hw; 641 642 if (!cmd->sg_mapped) 643 return; 644 645 pci_unmap_sg(ha->pdev, cmd->sg, cmd->sg_cnt, cmd->dma_data_direction); 646 cmd->sg_mapped = 0; 647 } 648 649 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *, 650 struct tcm_qla2xxx_nacl *, struct qla_tgt_sess *); 651 /* 652 * Expected to be called with struct qla_hw_data->hardware_lock held 653 */ 654 static void tcm_qla2xxx_clear_nacl_from_fcport_map(struct qla_tgt_sess *sess) 655 { 656 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl; 657 struct se_portal_group *se_tpg = se_nacl->se_tpg; 658 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn; 659 struct tcm_qla2xxx_lport *lport = container_of(se_wwn, 660 struct tcm_qla2xxx_lport, lport_wwn); 661 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl, 662 struct tcm_qla2xxx_nacl, se_node_acl); 663 void *node; 664 665 pr_debug("fc_rport domain: port_id 0x%06x\n", nacl->nport_id); 666 667 node = btree_remove32(&lport->lport_fcport_map, nacl->nport_id); 668 if (WARN_ON(node && (node != se_nacl))) { 669 /* 670 * The nacl no longer matches what we think it should be. 671 * Most likely a new dynamic acl has been added while 672 * someone dropped the hardware lock. It clearly is a 673 * bug elsewhere, but this bit can't make things worse. 674 */ 675 btree_insert32(&lport->lport_fcport_map, nacl->nport_id, 676 node, GFP_ATOMIC); 677 } 678 679 pr_debug("Removed from fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%06x\n", 680 se_nacl, nacl->nport_wwnn, nacl->nport_id); 681 /* 682 * Now clear the se_nacl and session pointers from our HW lport lookup 683 * table mapping for this initiator's fabric S_ID and LOOP_ID entries. 684 * 685 * This is done ahead of callbacks into tcm_qla2xxx_free_session() -> 686 * target_wait_for_sess_cmds() before the session waits for outstanding 687 * I/O to complete, to avoid a race between session shutdown execution 688 * and incoming ATIOs or TMRs picking up a stale se_node_act reference. 689 */ 690 tcm_qla2xxx_clear_sess_lookup(lport, nacl, sess); 691 } 692 693 static void tcm_qla2xxx_release_session(struct kref *kref) 694 { 695 struct se_session *se_sess = container_of(kref, 696 struct se_session, sess_kref); 697 698 qlt_unreg_sess(se_sess->fabric_sess_ptr); 699 } 700 701 static void tcm_qla2xxx_put_sess(struct qla_tgt_sess *sess) 702 { 703 if (!sess) 704 return; 705 706 assert_spin_locked(&sess->vha->hw->hardware_lock); 707 kref_put(&sess->se_sess->sess_kref, tcm_qla2xxx_release_session); 708 } 709 710 static void tcm_qla2xxx_shutdown_sess(struct qla_tgt_sess *sess) 711 { 712 assert_spin_locked(&sess->vha->hw->hardware_lock); 713 target_sess_cmd_list_set_waiting(sess->se_sess); 714 } 715 716 static int tcm_qla2xxx_init_nodeacl(struct se_node_acl *se_nacl, 717 const char *name) 718 { 719 struct tcm_qla2xxx_nacl *nacl = 720 container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 721 u64 wwnn; 722 723 if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0) 724 return -EINVAL; 725 726 nacl->nport_wwnn = wwnn; 727 tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn); 728 729 return 0; 730 } 731 732 /* Start items for tcm_qla2xxx_tpg_attrib_cit */ 733 734 #define DEF_QLA_TPG_ATTRIB(name) \ 735 \ 736 static ssize_t tcm_qla2xxx_tpg_attrib_show_##name( \ 737 struct se_portal_group *se_tpg, \ 738 char *page) \ 739 { \ 740 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \ 741 struct tcm_qla2xxx_tpg, se_tpg); \ 742 \ 743 return sprintf(page, "%u\n", tpg->tpg_attrib.name); \ 744 } \ 745 \ 746 static ssize_t tcm_qla2xxx_tpg_attrib_store_##name( \ 747 struct se_portal_group *se_tpg, \ 748 const char *page, \ 749 size_t count) \ 750 { \ 751 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \ 752 struct tcm_qla2xxx_tpg, se_tpg); \ 753 unsigned long val; \ 754 int ret; \ 755 \ 756 ret = kstrtoul(page, 0, &val); \ 757 if (ret < 0) { \ 758 pr_err("kstrtoul() failed with" \ 759 " ret: %d\n", ret); \ 760 return -EINVAL; \ 761 } \ 762 ret = tcm_qla2xxx_set_attrib_##name(tpg, val); \ 763 \ 764 return (!ret) ? count : -EINVAL; \ 765 } 766 767 #define DEF_QLA_TPG_ATTR_BOOL(_name) \ 768 \ 769 static int tcm_qla2xxx_set_attrib_##_name( \ 770 struct tcm_qla2xxx_tpg *tpg, \ 771 unsigned long val) \ 772 { \ 773 struct tcm_qla2xxx_tpg_attrib *a = &tpg->tpg_attrib; \ 774 \ 775 if ((val != 0) && (val != 1)) { \ 776 pr_err("Illegal boolean value %lu\n", val); \ 777 return -EINVAL; \ 778 } \ 779 \ 780 a->_name = val; \ 781 return 0; \ 782 } 783 784 #define QLA_TPG_ATTR(_name, _mode) \ 785 TF_TPG_ATTRIB_ATTR(tcm_qla2xxx, _name, _mode); 786 787 /* 788 * Define tcm_qla2xxx_tpg_attrib_s_generate_node_acls 789 */ 790 DEF_QLA_TPG_ATTR_BOOL(generate_node_acls); 791 DEF_QLA_TPG_ATTRIB(generate_node_acls); 792 QLA_TPG_ATTR(generate_node_acls, S_IRUGO | S_IWUSR); 793 794 /* 795 Define tcm_qla2xxx_attrib_s_cache_dynamic_acls 796 */ 797 DEF_QLA_TPG_ATTR_BOOL(cache_dynamic_acls); 798 DEF_QLA_TPG_ATTRIB(cache_dynamic_acls); 799 QLA_TPG_ATTR(cache_dynamic_acls, S_IRUGO | S_IWUSR); 800 801 /* 802 * Define tcm_qla2xxx_tpg_attrib_s_demo_mode_write_protect 803 */ 804 DEF_QLA_TPG_ATTR_BOOL(demo_mode_write_protect); 805 DEF_QLA_TPG_ATTRIB(demo_mode_write_protect); 806 QLA_TPG_ATTR(demo_mode_write_protect, S_IRUGO | S_IWUSR); 807 808 /* 809 * Define tcm_qla2xxx_tpg_attrib_s_prod_mode_write_protect 810 */ 811 DEF_QLA_TPG_ATTR_BOOL(prod_mode_write_protect); 812 DEF_QLA_TPG_ATTRIB(prod_mode_write_protect); 813 QLA_TPG_ATTR(prod_mode_write_protect, S_IRUGO | S_IWUSR); 814 815 /* 816 * Define tcm_qla2xxx_tpg_attrib_s_demo_mode_login_only 817 */ 818 DEF_QLA_TPG_ATTR_BOOL(demo_mode_login_only); 819 DEF_QLA_TPG_ATTRIB(demo_mode_login_only); 820 QLA_TPG_ATTR(demo_mode_login_only, S_IRUGO | S_IWUSR); 821 822 static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = { 823 &tcm_qla2xxx_tpg_attrib_generate_node_acls.attr, 824 &tcm_qla2xxx_tpg_attrib_cache_dynamic_acls.attr, 825 &tcm_qla2xxx_tpg_attrib_demo_mode_write_protect.attr, 826 &tcm_qla2xxx_tpg_attrib_prod_mode_write_protect.attr, 827 &tcm_qla2xxx_tpg_attrib_demo_mode_login_only.attr, 828 NULL, 829 }; 830 831 /* End items for tcm_qla2xxx_tpg_attrib_cit */ 832 833 static ssize_t tcm_qla2xxx_tpg_show_enable( 834 struct se_portal_group *se_tpg, 835 char *page) 836 { 837 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 838 struct tcm_qla2xxx_tpg, se_tpg); 839 840 return snprintf(page, PAGE_SIZE, "%d\n", 841 atomic_read(&tpg->lport_tpg_enabled)); 842 } 843 844 static void tcm_qla2xxx_depend_tpg(struct work_struct *work) 845 { 846 struct tcm_qla2xxx_tpg *base_tpg = container_of(work, 847 struct tcm_qla2xxx_tpg, tpg_base_work); 848 struct se_portal_group *se_tpg = &base_tpg->se_tpg; 849 struct scsi_qla_host *base_vha = base_tpg->lport->qla_vha; 850 851 if (!target_depend_item(&se_tpg->tpg_group.cg_item)) { 852 atomic_set(&base_tpg->lport_tpg_enabled, 1); 853 qlt_enable_vha(base_vha); 854 } 855 complete(&base_tpg->tpg_base_comp); 856 } 857 858 static void tcm_qla2xxx_undepend_tpg(struct work_struct *work) 859 { 860 struct tcm_qla2xxx_tpg *base_tpg = container_of(work, 861 struct tcm_qla2xxx_tpg, tpg_base_work); 862 struct se_portal_group *se_tpg = &base_tpg->se_tpg; 863 struct scsi_qla_host *base_vha = base_tpg->lport->qla_vha; 864 865 if (!qlt_stop_phase1(base_vha->vha_tgt.qla_tgt)) { 866 atomic_set(&base_tpg->lport_tpg_enabled, 0); 867 target_undepend_item(&se_tpg->tpg_group.cg_item); 868 } 869 complete(&base_tpg->tpg_base_comp); 870 } 871 872 static ssize_t tcm_qla2xxx_tpg_store_enable( 873 struct se_portal_group *se_tpg, 874 const char *page, 875 size_t count) 876 { 877 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 878 struct tcm_qla2xxx_tpg, se_tpg); 879 unsigned long op; 880 int rc; 881 882 rc = kstrtoul(page, 0, &op); 883 if (rc < 0) { 884 pr_err("kstrtoul() returned %d\n", rc); 885 return -EINVAL; 886 } 887 if ((op != 1) && (op != 0)) { 888 pr_err("Illegal value for tpg_enable: %lu\n", op); 889 return -EINVAL; 890 } 891 if (op) { 892 if (atomic_read(&tpg->lport_tpg_enabled)) 893 return -EEXIST; 894 895 INIT_WORK(&tpg->tpg_base_work, tcm_qla2xxx_depend_tpg); 896 } else { 897 if (!atomic_read(&tpg->lport_tpg_enabled)) 898 return count; 899 900 INIT_WORK(&tpg->tpg_base_work, tcm_qla2xxx_undepend_tpg); 901 } 902 init_completion(&tpg->tpg_base_comp); 903 schedule_work(&tpg->tpg_base_work); 904 wait_for_completion(&tpg->tpg_base_comp); 905 906 if (op) { 907 if (!atomic_read(&tpg->lport_tpg_enabled)) 908 return -ENODEV; 909 } else { 910 if (atomic_read(&tpg->lport_tpg_enabled)) 911 return -EPERM; 912 } 913 return count; 914 } 915 916 TF_TPG_BASE_ATTR(tcm_qla2xxx, enable, S_IRUGO | S_IWUSR); 917 918 static ssize_t tcm_qla2xxx_tpg_show_dynamic_sessions( 919 struct se_portal_group *se_tpg, 920 char *page) 921 { 922 return target_show_dynamic_sessions(se_tpg, page); 923 } 924 925 TF_TPG_BASE_ATTR_RO(tcm_qla2xxx, dynamic_sessions); 926 927 static ssize_t tcm_qla2xxx_tpg_store_fabric_prot_type( 928 struct se_portal_group *se_tpg, 929 const char *page, 930 size_t count) 931 { 932 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 933 struct tcm_qla2xxx_tpg, se_tpg); 934 unsigned long val; 935 int ret = kstrtoul(page, 0, &val); 936 937 if (ret) { 938 pr_err("kstrtoul() returned %d for fabric_prot_type\n", ret); 939 return ret; 940 } 941 if (val != 0 && val != 1 && val != 3) { 942 pr_err("Invalid qla2xxx fabric_prot_type: %lu\n", val); 943 return -EINVAL; 944 } 945 tpg->tpg_attrib.fabric_prot_type = val; 946 947 return count; 948 } 949 950 static ssize_t tcm_qla2xxx_tpg_show_fabric_prot_type( 951 struct se_portal_group *se_tpg, 952 char *page) 953 { 954 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 955 struct tcm_qla2xxx_tpg, se_tpg); 956 957 return sprintf(page, "%d\n", tpg->tpg_attrib.fabric_prot_type); 958 } 959 TF_TPG_BASE_ATTR(tcm_qla2xxx, fabric_prot_type, S_IRUGO | S_IWUSR); 960 961 static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = { 962 &tcm_qla2xxx_tpg_enable.attr, 963 &tcm_qla2xxx_tpg_dynamic_sessions.attr, 964 &tcm_qla2xxx_tpg_fabric_prot_type.attr, 965 NULL, 966 }; 967 968 static struct se_portal_group *tcm_qla2xxx_make_tpg( 969 struct se_wwn *wwn, 970 struct config_group *group, 971 const char *name) 972 { 973 struct tcm_qla2xxx_lport *lport = container_of(wwn, 974 struct tcm_qla2xxx_lport, lport_wwn); 975 struct tcm_qla2xxx_tpg *tpg; 976 unsigned long tpgt; 977 int ret; 978 979 if (strstr(name, "tpgt_") != name) 980 return ERR_PTR(-EINVAL); 981 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX) 982 return ERR_PTR(-EINVAL); 983 984 if ((tpgt != 1)) { 985 pr_err("In non NPIV mode, a single TPG=1 is used for HW port mappings\n"); 986 return ERR_PTR(-ENOSYS); 987 } 988 989 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL); 990 if (!tpg) { 991 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n"); 992 return ERR_PTR(-ENOMEM); 993 } 994 tpg->lport = lport; 995 tpg->lport_tpgt = tpgt; 996 /* 997 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic 998 * NodeACLs 999 */ 1000 tpg->tpg_attrib.generate_node_acls = 1; 1001 tpg->tpg_attrib.demo_mode_write_protect = 1; 1002 tpg->tpg_attrib.cache_dynamic_acls = 1; 1003 tpg->tpg_attrib.demo_mode_login_only = 1; 1004 1005 ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP); 1006 if (ret < 0) { 1007 kfree(tpg); 1008 return NULL; 1009 } 1010 1011 lport->tpg_1 = tpg; 1012 1013 return &tpg->se_tpg; 1014 } 1015 1016 static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg) 1017 { 1018 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1019 struct tcm_qla2xxx_tpg, se_tpg); 1020 struct tcm_qla2xxx_lport *lport = tpg->lport; 1021 struct scsi_qla_host *vha = lport->qla_vha; 1022 /* 1023 * Call into qla2x_target.c LLD logic to shutdown the active 1024 * FC Nexuses and disable target mode operation for this qla_hw_data 1025 */ 1026 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stop) 1027 qlt_stop_phase1(vha->vha_tgt.qla_tgt); 1028 1029 core_tpg_deregister(se_tpg); 1030 /* 1031 * Clear local TPG=1 pointer for non NPIV mode. 1032 */ 1033 lport->tpg_1 = NULL; 1034 kfree(tpg); 1035 } 1036 1037 static ssize_t tcm_qla2xxx_npiv_tpg_show_enable( 1038 struct se_portal_group *se_tpg, 1039 char *page) 1040 { 1041 return tcm_qla2xxx_tpg_show_enable(se_tpg, page); 1042 } 1043 1044 static ssize_t tcm_qla2xxx_npiv_tpg_store_enable( 1045 struct se_portal_group *se_tpg, 1046 const char *page, 1047 size_t count) 1048 { 1049 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn; 1050 struct tcm_qla2xxx_lport *lport = container_of(se_wwn, 1051 struct tcm_qla2xxx_lport, lport_wwn); 1052 struct scsi_qla_host *vha = lport->qla_vha; 1053 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1054 struct tcm_qla2xxx_tpg, se_tpg); 1055 unsigned long op; 1056 int rc; 1057 1058 rc = kstrtoul(page, 0, &op); 1059 if (rc < 0) { 1060 pr_err("kstrtoul() returned %d\n", rc); 1061 return -EINVAL; 1062 } 1063 if ((op != 1) && (op != 0)) { 1064 pr_err("Illegal value for tpg_enable: %lu\n", op); 1065 return -EINVAL; 1066 } 1067 if (op) { 1068 if (atomic_read(&tpg->lport_tpg_enabled)) 1069 return -EEXIST; 1070 1071 atomic_set(&tpg->lport_tpg_enabled, 1); 1072 qlt_enable_vha(vha); 1073 } else { 1074 if (!atomic_read(&tpg->lport_tpg_enabled)) 1075 return count; 1076 1077 atomic_set(&tpg->lport_tpg_enabled, 0); 1078 qlt_stop_phase1(vha->vha_tgt.qla_tgt); 1079 } 1080 1081 return count; 1082 } 1083 1084 TF_TPG_BASE_ATTR(tcm_qla2xxx_npiv, enable, S_IRUGO | S_IWUSR); 1085 1086 static struct configfs_attribute *tcm_qla2xxx_npiv_tpg_attrs[] = { 1087 &tcm_qla2xxx_npiv_tpg_enable.attr, 1088 NULL, 1089 }; 1090 1091 static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg( 1092 struct se_wwn *wwn, 1093 struct config_group *group, 1094 const char *name) 1095 { 1096 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1097 struct tcm_qla2xxx_lport, lport_wwn); 1098 struct tcm_qla2xxx_tpg *tpg; 1099 unsigned long tpgt; 1100 int ret; 1101 1102 if (strstr(name, "tpgt_") != name) 1103 return ERR_PTR(-EINVAL); 1104 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX) 1105 return ERR_PTR(-EINVAL); 1106 1107 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL); 1108 if (!tpg) { 1109 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n"); 1110 return ERR_PTR(-ENOMEM); 1111 } 1112 tpg->lport = lport; 1113 tpg->lport_tpgt = tpgt; 1114 1115 /* 1116 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic 1117 * NodeACLs 1118 */ 1119 tpg->tpg_attrib.generate_node_acls = 1; 1120 tpg->tpg_attrib.demo_mode_write_protect = 1; 1121 tpg->tpg_attrib.cache_dynamic_acls = 1; 1122 tpg->tpg_attrib.demo_mode_login_only = 1; 1123 1124 ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP); 1125 if (ret < 0) { 1126 kfree(tpg); 1127 return NULL; 1128 } 1129 lport->tpg_1 = tpg; 1130 return &tpg->se_tpg; 1131 } 1132 1133 /* 1134 * Expected to be called with struct qla_hw_data->hardware_lock held 1135 */ 1136 static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_s_id( 1137 scsi_qla_host_t *vha, 1138 const uint8_t *s_id) 1139 { 1140 struct tcm_qla2xxx_lport *lport; 1141 struct se_node_acl *se_nacl; 1142 struct tcm_qla2xxx_nacl *nacl; 1143 u32 key; 1144 1145 lport = vha->vha_tgt.target_lport_ptr; 1146 if (!lport) { 1147 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1148 dump_stack(); 1149 return NULL; 1150 } 1151 1152 key = (((unsigned long)s_id[0] << 16) | 1153 ((unsigned long)s_id[1] << 8) | 1154 (unsigned long)s_id[2]); 1155 pr_debug("find_sess_by_s_id: 0x%06x\n", key); 1156 1157 se_nacl = btree_lookup32(&lport->lport_fcport_map, key); 1158 if (!se_nacl) { 1159 pr_debug("Unable to locate s_id: 0x%06x\n", key); 1160 return NULL; 1161 } 1162 pr_debug("find_sess_by_s_id: located se_nacl: %p, initiatorname: %s\n", 1163 se_nacl, se_nacl->initiatorname); 1164 1165 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1166 if (!nacl->qla_tgt_sess) { 1167 pr_err("Unable to locate struct qla_tgt_sess\n"); 1168 return NULL; 1169 } 1170 1171 return nacl->qla_tgt_sess; 1172 } 1173 1174 /* 1175 * Expected to be called with struct qla_hw_data->hardware_lock held 1176 */ 1177 static void tcm_qla2xxx_set_sess_by_s_id( 1178 struct tcm_qla2xxx_lport *lport, 1179 struct se_node_acl *new_se_nacl, 1180 struct tcm_qla2xxx_nacl *nacl, 1181 struct se_session *se_sess, 1182 struct qla_tgt_sess *qla_tgt_sess, 1183 uint8_t *s_id) 1184 { 1185 u32 key; 1186 void *slot; 1187 int rc; 1188 1189 key = (((unsigned long)s_id[0] << 16) | 1190 ((unsigned long)s_id[1] << 8) | 1191 (unsigned long)s_id[2]); 1192 pr_debug("set_sess_by_s_id: %06x\n", key); 1193 1194 slot = btree_lookup32(&lport->lport_fcport_map, key); 1195 if (!slot) { 1196 if (new_se_nacl) { 1197 pr_debug("Setting up new fc_port entry to new_se_nacl\n"); 1198 nacl->nport_id = key; 1199 rc = btree_insert32(&lport->lport_fcport_map, key, 1200 new_se_nacl, GFP_ATOMIC); 1201 if (rc) 1202 printk(KERN_ERR "Unable to insert s_id into fcport_map: %06x\n", 1203 (int)key); 1204 } else { 1205 pr_debug("Wiping nonexisting fc_port entry\n"); 1206 } 1207 1208 qla_tgt_sess->se_sess = se_sess; 1209 nacl->qla_tgt_sess = qla_tgt_sess; 1210 return; 1211 } 1212 1213 if (nacl->qla_tgt_sess) { 1214 if (new_se_nacl == NULL) { 1215 pr_debug("Clearing existing nacl->qla_tgt_sess and fc_port entry\n"); 1216 btree_remove32(&lport->lport_fcport_map, key); 1217 nacl->qla_tgt_sess = NULL; 1218 return; 1219 } 1220 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_port entry\n"); 1221 btree_update32(&lport->lport_fcport_map, key, new_se_nacl); 1222 qla_tgt_sess->se_sess = se_sess; 1223 nacl->qla_tgt_sess = qla_tgt_sess; 1224 return; 1225 } 1226 1227 if (new_se_nacl == NULL) { 1228 pr_debug("Clearing existing fc_port entry\n"); 1229 btree_remove32(&lport->lport_fcport_map, key); 1230 return; 1231 } 1232 1233 pr_debug("Replacing existing fc_port entry w/o active nacl->qla_tgt_sess\n"); 1234 btree_update32(&lport->lport_fcport_map, key, new_se_nacl); 1235 qla_tgt_sess->se_sess = se_sess; 1236 nacl->qla_tgt_sess = qla_tgt_sess; 1237 1238 pr_debug("Setup nacl->qla_tgt_sess %p by s_id for se_nacl: %p, initiatorname: %s\n", 1239 nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname); 1240 } 1241 1242 /* 1243 * Expected to be called with struct qla_hw_data->hardware_lock held 1244 */ 1245 static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_loop_id( 1246 scsi_qla_host_t *vha, 1247 const uint16_t loop_id) 1248 { 1249 struct tcm_qla2xxx_lport *lport; 1250 struct se_node_acl *se_nacl; 1251 struct tcm_qla2xxx_nacl *nacl; 1252 struct tcm_qla2xxx_fc_loopid *fc_loopid; 1253 1254 lport = vha->vha_tgt.target_lport_ptr; 1255 if (!lport) { 1256 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1257 dump_stack(); 1258 return NULL; 1259 } 1260 1261 pr_debug("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id); 1262 1263 fc_loopid = lport->lport_loopid_map + loop_id; 1264 se_nacl = fc_loopid->se_nacl; 1265 if (!se_nacl) { 1266 pr_debug("Unable to locate se_nacl by loop_id: 0x%04x\n", 1267 loop_id); 1268 return NULL; 1269 } 1270 1271 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1272 1273 if (!nacl->qla_tgt_sess) { 1274 pr_err("Unable to locate struct qla_tgt_sess\n"); 1275 return NULL; 1276 } 1277 1278 return nacl->qla_tgt_sess; 1279 } 1280 1281 /* 1282 * Expected to be called with struct qla_hw_data->hardware_lock held 1283 */ 1284 static void tcm_qla2xxx_set_sess_by_loop_id( 1285 struct tcm_qla2xxx_lport *lport, 1286 struct se_node_acl *new_se_nacl, 1287 struct tcm_qla2xxx_nacl *nacl, 1288 struct se_session *se_sess, 1289 struct qla_tgt_sess *qla_tgt_sess, 1290 uint16_t loop_id) 1291 { 1292 struct se_node_acl *saved_nacl; 1293 struct tcm_qla2xxx_fc_loopid *fc_loopid; 1294 1295 pr_debug("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id); 1296 1297 fc_loopid = &((struct tcm_qla2xxx_fc_loopid *) 1298 lport->lport_loopid_map)[loop_id]; 1299 1300 saved_nacl = fc_loopid->se_nacl; 1301 if (!saved_nacl) { 1302 pr_debug("Setting up new fc_loopid->se_nacl to new_se_nacl\n"); 1303 fc_loopid->se_nacl = new_se_nacl; 1304 if (qla_tgt_sess->se_sess != se_sess) 1305 qla_tgt_sess->se_sess = se_sess; 1306 if (nacl->qla_tgt_sess != qla_tgt_sess) 1307 nacl->qla_tgt_sess = qla_tgt_sess; 1308 return; 1309 } 1310 1311 if (nacl->qla_tgt_sess) { 1312 if (new_se_nacl == NULL) { 1313 pr_debug("Clearing nacl->qla_tgt_sess and fc_loopid->se_nacl\n"); 1314 fc_loopid->se_nacl = NULL; 1315 nacl->qla_tgt_sess = NULL; 1316 return; 1317 } 1318 1319 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_loopid->se_nacl\n"); 1320 fc_loopid->se_nacl = new_se_nacl; 1321 if (qla_tgt_sess->se_sess != se_sess) 1322 qla_tgt_sess->se_sess = se_sess; 1323 if (nacl->qla_tgt_sess != qla_tgt_sess) 1324 nacl->qla_tgt_sess = qla_tgt_sess; 1325 return; 1326 } 1327 1328 if (new_se_nacl == NULL) { 1329 pr_debug("Clearing fc_loopid->se_nacl\n"); 1330 fc_loopid->se_nacl = NULL; 1331 return; 1332 } 1333 1334 pr_debug("Replacing existing fc_loopid->se_nacl w/o active nacl->qla_tgt_sess\n"); 1335 fc_loopid->se_nacl = new_se_nacl; 1336 if (qla_tgt_sess->se_sess != se_sess) 1337 qla_tgt_sess->se_sess = se_sess; 1338 if (nacl->qla_tgt_sess != qla_tgt_sess) 1339 nacl->qla_tgt_sess = qla_tgt_sess; 1340 1341 pr_debug("Setup nacl->qla_tgt_sess %p by loop_id for se_nacl: %p, initiatorname: %s\n", 1342 nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname); 1343 } 1344 1345 /* 1346 * Should always be called with qla_hw_data->hardware_lock held. 1347 */ 1348 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *lport, 1349 struct tcm_qla2xxx_nacl *nacl, struct qla_tgt_sess *sess) 1350 { 1351 struct se_session *se_sess = sess->se_sess; 1352 unsigned char be_sid[3]; 1353 1354 be_sid[0] = sess->s_id.b.domain; 1355 be_sid[1] = sess->s_id.b.area; 1356 be_sid[2] = sess->s_id.b.al_pa; 1357 1358 tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess, 1359 sess, be_sid); 1360 tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess, 1361 sess, sess->loop_id); 1362 } 1363 1364 static void tcm_qla2xxx_free_session(struct qla_tgt_sess *sess) 1365 { 1366 struct qla_tgt *tgt = sess->tgt; 1367 struct qla_hw_data *ha = tgt->ha; 1368 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev); 1369 struct se_session *se_sess; 1370 struct se_node_acl *se_nacl; 1371 struct tcm_qla2xxx_lport *lport; 1372 struct tcm_qla2xxx_nacl *nacl; 1373 1374 BUG_ON(in_interrupt()); 1375 1376 se_sess = sess->se_sess; 1377 if (!se_sess) { 1378 pr_err("struct qla_tgt_sess->se_sess is NULL\n"); 1379 dump_stack(); 1380 return; 1381 } 1382 se_nacl = se_sess->se_node_acl; 1383 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 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 /* 1398 * Called via qlt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl() 1399 * to locate struct se_node_acl 1400 */ 1401 static int tcm_qla2xxx_check_initiator_node_acl( 1402 scsi_qla_host_t *vha, 1403 unsigned char *fc_wwpn, 1404 void *qla_tgt_sess, 1405 uint8_t *s_id, 1406 uint16_t loop_id) 1407 { 1408 struct qla_hw_data *ha = vha->hw; 1409 struct tcm_qla2xxx_lport *lport; 1410 struct tcm_qla2xxx_tpg *tpg; 1411 struct tcm_qla2xxx_nacl *nacl; 1412 struct se_portal_group *se_tpg; 1413 struct se_node_acl *se_nacl; 1414 struct se_session *se_sess; 1415 struct qla_tgt_sess *sess = qla_tgt_sess; 1416 unsigned char port_name[36]; 1417 unsigned long flags; 1418 int num_tags = (ha->fw_xcb_count) ? ha->fw_xcb_count : 1419 TCM_QLA2XXX_DEFAULT_TAGS; 1420 1421 lport = vha->vha_tgt.target_lport_ptr; 1422 if (!lport) { 1423 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1424 dump_stack(); 1425 return -EINVAL; 1426 } 1427 /* 1428 * Locate the TPG=1 reference.. 1429 */ 1430 tpg = lport->tpg_1; 1431 if (!tpg) { 1432 pr_err("Unable to lcoate struct tcm_qla2xxx_lport->tpg_1\n"); 1433 return -EINVAL; 1434 } 1435 se_tpg = &tpg->se_tpg; 1436 1437 se_sess = transport_init_session_tags(num_tags, 1438 sizeof(struct qla_tgt_cmd), 1439 TARGET_PROT_ALL); 1440 if (IS_ERR(se_sess)) { 1441 pr_err("Unable to initialize struct se_session\n"); 1442 return PTR_ERR(se_sess); 1443 } 1444 /* 1445 * Format the FCP Initiator port_name into colon seperated values to 1446 * match the format by tcm_qla2xxx explict ConfigFS NodeACLs. 1447 */ 1448 memset(&port_name, 0, 36); 1449 snprintf(port_name, sizeof(port_name), "%8phC", fc_wwpn); 1450 /* 1451 * Locate our struct se_node_acl either from an explict NodeACL created 1452 * via ConfigFS, or via running in TPG demo mode. 1453 */ 1454 se_sess->se_node_acl = core_tpg_check_initiator_node_acl(se_tpg, 1455 port_name); 1456 if (!se_sess->se_node_acl) { 1457 transport_free_session(se_sess); 1458 return -EINVAL; 1459 } 1460 se_nacl = se_sess->se_node_acl; 1461 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1462 /* 1463 * And now setup the new se_nacl and session pointers into our HW lport 1464 * mappings for fabric S_ID and LOOP_ID. 1465 */ 1466 spin_lock_irqsave(&ha->hardware_lock, flags); 1467 tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl, se_sess, 1468 qla_tgt_sess, s_id); 1469 tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl, se_sess, 1470 qla_tgt_sess, loop_id); 1471 spin_unlock_irqrestore(&ha->hardware_lock, flags); 1472 /* 1473 * Finally register the new FC Nexus with TCM 1474 */ 1475 transport_register_session(se_nacl->se_tpg, se_nacl, se_sess, sess); 1476 1477 return 0; 1478 } 1479 1480 static void tcm_qla2xxx_update_sess(struct qla_tgt_sess *sess, port_id_t s_id, 1481 uint16_t loop_id, bool conf_compl_supported) 1482 { 1483 struct qla_tgt *tgt = sess->tgt; 1484 struct qla_hw_data *ha = tgt->ha; 1485 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev); 1486 struct tcm_qla2xxx_lport *lport = vha->vha_tgt.target_lport_ptr; 1487 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl; 1488 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl, 1489 struct tcm_qla2xxx_nacl, se_node_acl); 1490 u32 key; 1491 1492 1493 if (sess->loop_id != loop_id || sess->s_id.b24 != s_id.b24) 1494 pr_info("Updating session %p from port %8phC loop_id %d -> %d s_id %x:%x:%x -> %x:%x:%x\n", 1495 sess, sess->port_name, 1496 sess->loop_id, loop_id, sess->s_id.b.domain, 1497 sess->s_id.b.area, sess->s_id.b.al_pa, s_id.b.domain, 1498 s_id.b.area, s_id.b.al_pa); 1499 1500 if (sess->loop_id != loop_id) { 1501 /* 1502 * Because we can shuffle loop IDs around and we 1503 * update different sessions non-atomically, we might 1504 * have overwritten this session's old loop ID 1505 * already, and we might end up overwriting some other 1506 * session that will be updated later. So we have to 1507 * be extra careful and we can't warn about those things... 1508 */ 1509 if (lport->lport_loopid_map[sess->loop_id].se_nacl == se_nacl) 1510 lport->lport_loopid_map[sess->loop_id].se_nacl = NULL; 1511 1512 lport->lport_loopid_map[loop_id].se_nacl = se_nacl; 1513 1514 sess->loop_id = loop_id; 1515 } 1516 1517 if (sess->s_id.b24 != s_id.b24) { 1518 key = (((u32) sess->s_id.b.domain << 16) | 1519 ((u32) sess->s_id.b.area << 8) | 1520 ((u32) sess->s_id.b.al_pa)); 1521 1522 if (btree_lookup32(&lport->lport_fcport_map, key)) 1523 WARN(btree_remove32(&lport->lport_fcport_map, key) != se_nacl, 1524 "Found wrong se_nacl when updating s_id %x:%x:%x\n", 1525 sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa); 1526 else 1527 WARN(1, "No lport_fcport_map entry for s_id %x:%x:%x\n", 1528 sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa); 1529 1530 key = (((u32) s_id.b.domain << 16) | 1531 ((u32) s_id.b.area << 8) | 1532 ((u32) s_id.b.al_pa)); 1533 1534 if (btree_lookup32(&lport->lport_fcport_map, key)) { 1535 WARN(1, "Already have lport_fcport_map entry for s_id %x:%x:%x\n", 1536 s_id.b.domain, s_id.b.area, s_id.b.al_pa); 1537 btree_update32(&lport->lport_fcport_map, key, se_nacl); 1538 } else { 1539 btree_insert32(&lport->lport_fcport_map, key, se_nacl, GFP_ATOMIC); 1540 } 1541 1542 sess->s_id = s_id; 1543 nacl->nport_id = key; 1544 } 1545 1546 sess->conf_compl_supported = conf_compl_supported; 1547 } 1548 1549 /* 1550 * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path. 1551 */ 1552 static struct qla_tgt_func_tmpl tcm_qla2xxx_template = { 1553 .handle_cmd = tcm_qla2xxx_handle_cmd, 1554 .handle_data = tcm_qla2xxx_handle_data, 1555 .handle_dif_err = tcm_qla2xxx_handle_dif_err, 1556 .handle_tmr = tcm_qla2xxx_handle_tmr, 1557 .free_cmd = tcm_qla2xxx_free_cmd, 1558 .free_mcmd = tcm_qla2xxx_free_mcmd, 1559 .free_session = tcm_qla2xxx_free_session, 1560 .update_sess = tcm_qla2xxx_update_sess, 1561 .check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl, 1562 .find_sess_by_s_id = tcm_qla2xxx_find_sess_by_s_id, 1563 .find_sess_by_loop_id = tcm_qla2xxx_find_sess_by_loop_id, 1564 .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map, 1565 .put_sess = tcm_qla2xxx_put_sess, 1566 .shutdown_sess = tcm_qla2xxx_shutdown_sess, 1567 }; 1568 1569 static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport) 1570 { 1571 int rc; 1572 1573 rc = btree_init32(&lport->lport_fcport_map); 1574 if (rc) { 1575 pr_err("Unable to initialize lport->lport_fcport_map btree\n"); 1576 return rc; 1577 } 1578 1579 lport->lport_loopid_map = vmalloc(sizeof(struct tcm_qla2xxx_fc_loopid) * 1580 65536); 1581 if (!lport->lport_loopid_map) { 1582 pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n", 1583 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536); 1584 btree_destroy32(&lport->lport_fcport_map); 1585 return -ENOMEM; 1586 } 1587 memset(lport->lport_loopid_map, 0, sizeof(struct tcm_qla2xxx_fc_loopid) 1588 * 65536); 1589 pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n", 1590 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536); 1591 return 0; 1592 } 1593 1594 static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha, 1595 void *target_lport_ptr, 1596 u64 npiv_wwpn, u64 npiv_wwnn) 1597 { 1598 struct qla_hw_data *ha = vha->hw; 1599 struct tcm_qla2xxx_lport *lport = 1600 (struct tcm_qla2xxx_lport *)target_lport_ptr; 1601 /* 1602 * Setup tgt_ops, local pointer to vha and target_lport_ptr 1603 */ 1604 ha->tgt.tgt_ops = &tcm_qla2xxx_template; 1605 vha->vha_tgt.target_lport_ptr = target_lport_ptr; 1606 lport->qla_vha = vha; 1607 1608 return 0; 1609 } 1610 1611 static struct se_wwn *tcm_qla2xxx_make_lport( 1612 struct target_fabric_configfs *tf, 1613 struct config_group *group, 1614 const char *name) 1615 { 1616 struct tcm_qla2xxx_lport *lport; 1617 u64 wwpn; 1618 int ret = -ENODEV; 1619 1620 if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0) 1621 return ERR_PTR(-EINVAL); 1622 1623 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL); 1624 if (!lport) { 1625 pr_err("Unable to allocate struct tcm_qla2xxx_lport\n"); 1626 return ERR_PTR(-ENOMEM); 1627 } 1628 lport->lport_wwpn = wwpn; 1629 tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN, 1630 wwpn); 1631 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) wwpn); 1632 1633 ret = tcm_qla2xxx_init_lport(lport); 1634 if (ret != 0) 1635 goto out; 1636 1637 ret = qlt_lport_register(lport, wwpn, 0, 0, 1638 tcm_qla2xxx_lport_register_cb); 1639 if (ret != 0) 1640 goto out_lport; 1641 1642 return &lport->lport_wwn; 1643 out_lport: 1644 vfree(lport->lport_loopid_map); 1645 btree_destroy32(&lport->lport_fcport_map); 1646 out: 1647 kfree(lport); 1648 return ERR_PTR(ret); 1649 } 1650 1651 static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn) 1652 { 1653 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1654 struct tcm_qla2xxx_lport, lport_wwn); 1655 struct scsi_qla_host *vha = lport->qla_vha; 1656 struct se_node_acl *node; 1657 u32 key = 0; 1658 1659 /* 1660 * Call into qla2x_target.c LLD logic to complete the 1661 * shutdown of struct qla_tgt after the call to 1662 * qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above.. 1663 */ 1664 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stopped) 1665 qlt_stop_phase2(vha->vha_tgt.qla_tgt); 1666 1667 qlt_lport_deregister(vha); 1668 1669 vfree(lport->lport_loopid_map); 1670 btree_for_each_safe32(&lport->lport_fcport_map, key, node) 1671 btree_remove32(&lport->lport_fcport_map, key); 1672 btree_destroy32(&lport->lport_fcport_map); 1673 kfree(lport); 1674 } 1675 1676 static int tcm_qla2xxx_lport_register_npiv_cb(struct scsi_qla_host *base_vha, 1677 void *target_lport_ptr, 1678 u64 npiv_wwpn, u64 npiv_wwnn) 1679 { 1680 struct fc_vport *vport; 1681 struct Scsi_Host *sh = base_vha->host; 1682 struct scsi_qla_host *npiv_vha; 1683 struct tcm_qla2xxx_lport *lport = 1684 (struct tcm_qla2xxx_lport *)target_lport_ptr; 1685 struct tcm_qla2xxx_lport *base_lport = 1686 (struct tcm_qla2xxx_lport *)base_vha->vha_tgt.target_lport_ptr; 1687 struct tcm_qla2xxx_tpg *base_tpg; 1688 struct fc_vport_identifiers vport_id; 1689 1690 if (!qla_tgt_mode_enabled(base_vha)) { 1691 pr_err("qla2xxx base_vha not enabled for target mode\n"); 1692 return -EPERM; 1693 } 1694 1695 if (!base_lport || !base_lport->tpg_1 || 1696 !atomic_read(&base_lport->tpg_1->lport_tpg_enabled)) { 1697 pr_err("qla2xxx base_lport or tpg_1 not available\n"); 1698 return -EPERM; 1699 } 1700 base_tpg = base_lport->tpg_1; 1701 1702 memset(&vport_id, 0, sizeof(vport_id)); 1703 vport_id.port_name = npiv_wwpn; 1704 vport_id.node_name = npiv_wwnn; 1705 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR; 1706 vport_id.vport_type = FC_PORTTYPE_NPIV; 1707 vport_id.disable = false; 1708 1709 vport = fc_vport_create(sh, 0, &vport_id); 1710 if (!vport) { 1711 pr_err("fc_vport_create failed for qla2xxx_npiv\n"); 1712 return -ENODEV; 1713 } 1714 /* 1715 * Setup local pointer to NPIV vhba + target_lport_ptr 1716 */ 1717 npiv_vha = (struct scsi_qla_host *)vport->dd_data; 1718 npiv_vha->vha_tgt.target_lport_ptr = target_lport_ptr; 1719 lport->qla_vha = npiv_vha; 1720 scsi_host_get(npiv_vha->host); 1721 return 0; 1722 } 1723 1724 1725 static struct se_wwn *tcm_qla2xxx_npiv_make_lport( 1726 struct target_fabric_configfs *tf, 1727 struct config_group *group, 1728 const char *name) 1729 { 1730 struct tcm_qla2xxx_lport *lport; 1731 u64 phys_wwpn, npiv_wwpn, npiv_wwnn; 1732 char *p, tmp[128]; 1733 int ret; 1734 1735 snprintf(tmp, 128, "%s", name); 1736 1737 p = strchr(tmp, '@'); 1738 if (!p) { 1739 pr_err("Unable to locate NPIV '@' seperator\n"); 1740 return ERR_PTR(-EINVAL); 1741 } 1742 *p++ = '\0'; 1743 1744 if (tcm_qla2xxx_parse_wwn(tmp, &phys_wwpn, 1) < 0) 1745 return ERR_PTR(-EINVAL); 1746 1747 if (tcm_qla2xxx_npiv_parse_wwn(p, strlen(p)+1, 1748 &npiv_wwpn, &npiv_wwnn) < 0) 1749 return ERR_PTR(-EINVAL); 1750 1751 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL); 1752 if (!lport) { 1753 pr_err("Unable to allocate struct tcm_qla2xxx_lport for NPIV\n"); 1754 return ERR_PTR(-ENOMEM); 1755 } 1756 lport->lport_npiv_wwpn = npiv_wwpn; 1757 lport->lport_npiv_wwnn = npiv_wwnn; 1758 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) npiv_wwpn); 1759 1760 ret = tcm_qla2xxx_init_lport(lport); 1761 if (ret != 0) 1762 goto out; 1763 1764 ret = qlt_lport_register(lport, phys_wwpn, npiv_wwpn, npiv_wwnn, 1765 tcm_qla2xxx_lport_register_npiv_cb); 1766 if (ret != 0) 1767 goto out_lport; 1768 1769 return &lport->lport_wwn; 1770 out_lport: 1771 vfree(lport->lport_loopid_map); 1772 btree_destroy32(&lport->lport_fcport_map); 1773 out: 1774 kfree(lport); 1775 return ERR_PTR(ret); 1776 } 1777 1778 static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn) 1779 { 1780 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1781 struct tcm_qla2xxx_lport, lport_wwn); 1782 struct scsi_qla_host *npiv_vha = lport->qla_vha; 1783 struct qla_hw_data *ha = npiv_vha->hw; 1784 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 1785 1786 scsi_host_put(npiv_vha->host); 1787 /* 1788 * Notify libfc that we want to release the vha->fc_vport 1789 */ 1790 fc_vport_terminate(npiv_vha->fc_vport); 1791 scsi_host_put(base_vha->host); 1792 kfree(lport); 1793 } 1794 1795 1796 static ssize_t tcm_qla2xxx_wwn_show_attr_version( 1797 struct target_fabric_configfs *tf, 1798 char *page) 1799 { 1800 return sprintf(page, 1801 "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s on " 1802 UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname, 1803 utsname()->machine); 1804 } 1805 1806 TF_WWN_ATTR_RO(tcm_qla2xxx, version); 1807 1808 static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = { 1809 &tcm_qla2xxx_wwn_version.attr, 1810 NULL, 1811 }; 1812 1813 static const struct target_core_fabric_ops tcm_qla2xxx_ops = { 1814 .module = THIS_MODULE, 1815 .name = "qla2xxx", 1816 .node_acl_size = sizeof(struct tcm_qla2xxx_nacl), 1817 .get_fabric_name = tcm_qla2xxx_get_fabric_name, 1818 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn, 1819 .tpg_get_tag = tcm_qla2xxx_get_tag, 1820 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode, 1821 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache, 1822 .tpg_check_demo_mode_write_protect = 1823 tcm_qla2xxx_check_demo_write_protect, 1824 .tpg_check_prod_mode_write_protect = 1825 tcm_qla2xxx_check_prod_write_protect, 1826 .tpg_check_prot_fabric_only = tcm_qla2xxx_check_prot_fabric_only, 1827 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only, 1828 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index, 1829 .check_stop_free = tcm_qla2xxx_check_stop_free, 1830 .release_cmd = tcm_qla2xxx_release_cmd, 1831 .shutdown_session = tcm_qla2xxx_shutdown_session, 1832 .close_session = tcm_qla2xxx_close_session, 1833 .sess_get_index = tcm_qla2xxx_sess_get_index, 1834 .sess_get_initiator_sid = NULL, 1835 .write_pending = tcm_qla2xxx_write_pending, 1836 .write_pending_status = tcm_qla2xxx_write_pending_status, 1837 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs, 1838 .get_cmd_state = tcm_qla2xxx_get_cmd_state, 1839 .queue_data_in = tcm_qla2xxx_queue_data_in, 1840 .queue_status = tcm_qla2xxx_queue_status, 1841 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp, 1842 .aborted_task = tcm_qla2xxx_aborted_task, 1843 /* 1844 * Setup function pointers for generic logic in 1845 * target_core_fabric_configfs.c 1846 */ 1847 .fabric_make_wwn = tcm_qla2xxx_make_lport, 1848 .fabric_drop_wwn = tcm_qla2xxx_drop_lport, 1849 .fabric_make_tpg = tcm_qla2xxx_make_tpg, 1850 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg, 1851 .fabric_init_nodeacl = tcm_qla2xxx_init_nodeacl, 1852 1853 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs, 1854 .tfc_tpg_base_attrs = tcm_qla2xxx_tpg_attrs, 1855 .tfc_tpg_attrib_attrs = tcm_qla2xxx_tpg_attrib_attrs, 1856 }; 1857 1858 static const struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = { 1859 .module = THIS_MODULE, 1860 .name = "qla2xxx_npiv", 1861 .node_acl_size = sizeof(struct tcm_qla2xxx_nacl), 1862 .get_fabric_name = tcm_qla2xxx_npiv_get_fabric_name, 1863 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn, 1864 .tpg_get_tag = tcm_qla2xxx_get_tag, 1865 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode, 1866 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache, 1867 .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_demo_mode, 1868 .tpg_check_prod_mode_write_protect = 1869 tcm_qla2xxx_check_prod_write_protect, 1870 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only, 1871 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index, 1872 .check_stop_free = tcm_qla2xxx_check_stop_free, 1873 .release_cmd = tcm_qla2xxx_release_cmd, 1874 .shutdown_session = tcm_qla2xxx_shutdown_session, 1875 .close_session = tcm_qla2xxx_close_session, 1876 .sess_get_index = tcm_qla2xxx_sess_get_index, 1877 .sess_get_initiator_sid = NULL, 1878 .write_pending = tcm_qla2xxx_write_pending, 1879 .write_pending_status = tcm_qla2xxx_write_pending_status, 1880 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs, 1881 .get_cmd_state = tcm_qla2xxx_get_cmd_state, 1882 .queue_data_in = tcm_qla2xxx_queue_data_in, 1883 .queue_status = tcm_qla2xxx_queue_status, 1884 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp, 1885 .aborted_task = tcm_qla2xxx_aborted_task, 1886 /* 1887 * Setup function pointers for generic logic in 1888 * target_core_fabric_configfs.c 1889 */ 1890 .fabric_make_wwn = tcm_qla2xxx_npiv_make_lport, 1891 .fabric_drop_wwn = tcm_qla2xxx_npiv_drop_lport, 1892 .fabric_make_tpg = tcm_qla2xxx_npiv_make_tpg, 1893 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg, 1894 .fabric_init_nodeacl = tcm_qla2xxx_init_nodeacl, 1895 1896 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs, 1897 .tfc_tpg_base_attrs = tcm_qla2xxx_npiv_tpg_attrs, 1898 }; 1899 1900 static int tcm_qla2xxx_register_configfs(void) 1901 { 1902 int ret; 1903 1904 pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on " 1905 UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname, 1906 utsname()->machine); 1907 1908 ret = target_register_template(&tcm_qla2xxx_ops); 1909 if (ret) 1910 return ret; 1911 1912 ret = target_register_template(&tcm_qla2xxx_npiv_ops); 1913 if (ret) 1914 goto out_fabric; 1915 1916 tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free", 1917 WQ_MEM_RECLAIM, 0); 1918 if (!tcm_qla2xxx_free_wq) { 1919 ret = -ENOMEM; 1920 goto out_fabric_npiv; 1921 } 1922 1923 tcm_qla2xxx_cmd_wq = alloc_workqueue("tcm_qla2xxx_cmd", 0, 0); 1924 if (!tcm_qla2xxx_cmd_wq) { 1925 ret = -ENOMEM; 1926 goto out_free_wq; 1927 } 1928 1929 return 0; 1930 1931 out_free_wq: 1932 destroy_workqueue(tcm_qla2xxx_free_wq); 1933 out_fabric_npiv: 1934 target_unregister_template(&tcm_qla2xxx_npiv_ops); 1935 out_fabric: 1936 target_unregister_template(&tcm_qla2xxx_ops); 1937 return ret; 1938 } 1939 1940 static void tcm_qla2xxx_deregister_configfs(void) 1941 { 1942 destroy_workqueue(tcm_qla2xxx_cmd_wq); 1943 destroy_workqueue(tcm_qla2xxx_free_wq); 1944 1945 target_unregister_template(&tcm_qla2xxx_ops); 1946 target_unregister_template(&tcm_qla2xxx_npiv_ops); 1947 } 1948 1949 static int __init tcm_qla2xxx_init(void) 1950 { 1951 int ret; 1952 1953 ret = tcm_qla2xxx_register_configfs(); 1954 if (ret < 0) 1955 return ret; 1956 1957 return 0; 1958 } 1959 1960 static void __exit tcm_qla2xxx_exit(void) 1961 { 1962 tcm_qla2xxx_deregister_configfs(); 1963 } 1964 1965 MODULE_DESCRIPTION("TCM QLA2XXX series NPIV enabled fabric driver"); 1966 MODULE_LICENSE("GPL"); 1967 module_init(tcm_qla2xxx_init); 1968 module_exit(tcm_qla2xxx_exit); 1969