tcm_qla2xxx.c revision b46e34a6721cb057702f19ebe27cfc7877e500e5
1/******************************************************************************* 2 * This file contains tcm implementation using v4 configfs fabric infrastructure 3 * for QLogic target mode HBAs 4 * 5 * ?? Copyright 2010-2011 RisingTide Systems LLC. 6 * 7 * Licensed to the Linux Foundation under the General Public License (GPL) 8 * version 2. 9 * 10 * Author: Nicholas A. Bellinger <nab@risingtidesystems.com> 11 * 12 * tcm_qla2xxx_parse_wwn() and tcm_qla2xxx_format_wwn() contains code from 13 * the TCM_FC / Open-FCoE.org fabric module. 14 * 15 * Copyright (c) 2010 Cisco Systems, Inc 16 * 17 * This program is free software; you can redistribute it and/or modify 18 * it under the terms of the GNU General Public License as published by 19 * the Free Software Foundation; either version 2 of the License, or 20 * (at your option) any later version. 21 * 22 * This program is distributed in the hope that it will be useful, 23 * but WITHOUT ANY WARRANTY; without even the implied warranty of 24 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 25 * GNU General Public License for more details. 26 ****************************************************************************/ 27 28 29#include <linux/module.h> 30#include <linux/moduleparam.h> 31#include <generated/utsrelease.h> 32#include <linux/utsname.h> 33#include <linux/init.h> 34#include <linux/list.h> 35#include <linux/slab.h> 36#include <linux/kthread.h> 37#include <linux/types.h> 38#include <linux/string.h> 39#include <linux/configfs.h> 40#include <linux/ctype.h> 41#include <asm/unaligned.h> 42#include <scsi/scsi.h> 43#include <scsi/scsi_host.h> 44#include <scsi/scsi_device.h> 45#include <scsi/scsi_cmnd.h> 46#include <target/target_core_base.h> 47#include <target/target_core_fabric.h> 48#include <target/target_core_fabric_configfs.h> 49#include <target/target_core_configfs.h> 50#include <target/configfs_macros.h> 51 52#include "qla_def.h" 53#include "qla_target.h" 54#include "tcm_qla2xxx.h" 55 56struct workqueue_struct *tcm_qla2xxx_free_wq; 57struct workqueue_struct *tcm_qla2xxx_cmd_wq; 58 59static int tcm_qla2xxx_check_true(struct se_portal_group *se_tpg) 60{ 61 return 1; 62} 63 64static int tcm_qla2xxx_check_false(struct se_portal_group *se_tpg) 65{ 66 return 0; 67} 68 69/* 70 * Parse WWN. 71 * If strict, we require lower-case hex and colon separators to be sure 72 * the name is the same as what would be generated by ft_format_wwn() 73 * so the name and wwn are mapped one-to-one. 74 */ 75static ssize_t tcm_qla2xxx_parse_wwn(const char *name, u64 *wwn, int strict) 76{ 77 const char *cp; 78 char c; 79 u32 nibble; 80 u32 byte = 0; 81 u32 pos = 0; 82 u32 err; 83 84 *wwn = 0; 85 for (cp = name; cp < &name[TCM_QLA2XXX_NAMELEN - 1]; cp++) { 86 c = *cp; 87 if (c == '\n' && cp[1] == '\0') 88 continue; 89 if (strict && pos++ == 2 && byte++ < 7) { 90 pos = 0; 91 if (c == ':') 92 continue; 93 err = 1; 94 goto fail; 95 } 96 if (c == '\0') { 97 err = 2; 98 if (strict && byte != 8) 99 goto fail; 100 return cp - name; 101 } 102 err = 3; 103 if (isdigit(c)) 104 nibble = c - '0'; 105 else if (isxdigit(c) && (islower(c) || !strict)) 106 nibble = tolower(c) - 'a' + 10; 107 else 108 goto fail; 109 *wwn = (*wwn << 4) | nibble; 110 } 111 err = 4; 112fail: 113 pr_debug("err %u len %zu pos %u byte %u\n", 114 err, cp - name, pos, byte); 115 return -1; 116} 117 118static ssize_t tcm_qla2xxx_format_wwn(char *buf, size_t len, u64 wwn) 119{ 120 u8 b[8]; 121 122 put_unaligned_be64(wwn, b); 123 return snprintf(buf, len, 124 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x", 125 b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7]); 126} 127 128static char *tcm_qla2xxx_get_fabric_name(void) 129{ 130 return "qla2xxx"; 131} 132 133/* 134 * From drivers/scsi/scsi_transport_fc.c:fc_parse_wwn 135 */ 136static int tcm_qla2xxx_npiv_extract_wwn(const char *ns, u64 *nm) 137{ 138 unsigned int i, j; 139 u8 wwn[8]; 140 141 memset(wwn, 0, sizeof(wwn)); 142 143 /* Validate and store the new name */ 144 for (i = 0, j = 0; i < 16; i++) { 145 int value; 146 147 value = hex_to_bin(*ns++); 148 if (value >= 0) 149 j = (j << 4) | value; 150 else 151 return -EINVAL; 152 153 if (i % 2) { 154 wwn[i/2] = j & 0xff; 155 j = 0; 156 } 157 } 158 159 *nm = wwn_to_u64(wwn); 160 return 0; 161} 162 163/* 164 * This parsing logic follows drivers/scsi/scsi_transport_fc.c: 165 * store_fc_host_vport_create() 166 */ 167static int tcm_qla2xxx_npiv_parse_wwn( 168 const char *name, 169 size_t count, 170 u64 *wwpn, 171 u64 *wwnn) 172{ 173 unsigned int cnt = count; 174 int rc; 175 176 *wwpn = 0; 177 *wwnn = 0; 178 179 /* count may include a LF at end of string */ 180 if (name[cnt-1] == '\n') 181 cnt--; 182 183 /* validate we have enough characters for WWPN */ 184 if ((cnt != (16+1+16)) || (name[16] != ':')) 185 return -EINVAL; 186 187 rc = tcm_qla2xxx_npiv_extract_wwn(&name[0], wwpn); 188 if (rc != 0) 189 return rc; 190 191 rc = tcm_qla2xxx_npiv_extract_wwn(&name[17], wwnn); 192 if (rc != 0) 193 return rc; 194 195 return 0; 196} 197 198static ssize_t tcm_qla2xxx_npiv_format_wwn(char *buf, size_t len, 199 u64 wwpn, u64 wwnn) 200{ 201 u8 b[8], b2[8]; 202 203 put_unaligned_be64(wwpn, b); 204 put_unaligned_be64(wwnn, b2); 205 return snprintf(buf, len, 206 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x," 207 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x", 208 b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7], 209 b2[0], b2[1], b2[2], b2[3], b2[4], b2[5], b2[6], b2[7]); 210} 211 212static char *tcm_qla2xxx_npiv_get_fabric_name(void) 213{ 214 return "qla2xxx_npiv"; 215} 216 217static u8 tcm_qla2xxx_get_fabric_proto_ident(struct se_portal_group *se_tpg) 218{ 219 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 220 struct tcm_qla2xxx_tpg, se_tpg); 221 struct tcm_qla2xxx_lport *lport = tpg->lport; 222 u8 proto_id; 223 224 switch (lport->lport_proto_id) { 225 case SCSI_PROTOCOL_FCP: 226 default: 227 proto_id = fc_get_fabric_proto_ident(se_tpg); 228 break; 229 } 230 231 return proto_id; 232} 233 234static char *tcm_qla2xxx_get_fabric_wwn(struct se_portal_group *se_tpg) 235{ 236 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 237 struct tcm_qla2xxx_tpg, se_tpg); 238 struct tcm_qla2xxx_lport *lport = tpg->lport; 239 240 return &lport->lport_name[0]; 241} 242 243static char *tcm_qla2xxx_npiv_get_fabric_wwn(struct se_portal_group *se_tpg) 244{ 245 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 246 struct tcm_qla2xxx_tpg, se_tpg); 247 struct tcm_qla2xxx_lport *lport = tpg->lport; 248 249 return &lport->lport_npiv_name[0]; 250} 251 252static u16 tcm_qla2xxx_get_tag(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 return tpg->lport_tpgt; 257} 258 259static u32 tcm_qla2xxx_get_default_depth(struct se_portal_group *se_tpg) 260{ 261 return 1; 262} 263 264static u32 tcm_qla2xxx_get_pr_transport_id( 265 struct se_portal_group *se_tpg, 266 struct se_node_acl *se_nacl, 267 struct t10_pr_registration *pr_reg, 268 int *format_code, 269 unsigned char *buf) 270{ 271 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 272 struct tcm_qla2xxx_tpg, se_tpg); 273 struct tcm_qla2xxx_lport *lport = tpg->lport; 274 int ret = 0; 275 276 switch (lport->lport_proto_id) { 277 case SCSI_PROTOCOL_FCP: 278 default: 279 ret = fc_get_pr_transport_id(se_tpg, se_nacl, pr_reg, 280 format_code, buf); 281 break; 282 } 283 284 return ret; 285} 286 287static u32 tcm_qla2xxx_get_pr_transport_id_len( 288 struct se_portal_group *se_tpg, 289 struct se_node_acl *se_nacl, 290 struct t10_pr_registration *pr_reg, 291 int *format_code) 292{ 293 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 294 struct tcm_qla2xxx_tpg, se_tpg); 295 struct tcm_qla2xxx_lport *lport = tpg->lport; 296 int ret = 0; 297 298 switch (lport->lport_proto_id) { 299 case SCSI_PROTOCOL_FCP: 300 default: 301 ret = fc_get_pr_transport_id_len(se_tpg, se_nacl, pr_reg, 302 format_code); 303 break; 304 } 305 306 return ret; 307} 308 309static char *tcm_qla2xxx_parse_pr_out_transport_id( 310 struct se_portal_group *se_tpg, 311 const char *buf, 312 u32 *out_tid_len, 313 char **port_nexus_ptr) 314{ 315 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 316 struct tcm_qla2xxx_tpg, se_tpg); 317 struct tcm_qla2xxx_lport *lport = tpg->lport; 318 char *tid = NULL; 319 320 switch (lport->lport_proto_id) { 321 case SCSI_PROTOCOL_FCP: 322 default: 323 tid = fc_parse_pr_out_transport_id(se_tpg, buf, out_tid_len, 324 port_nexus_ptr); 325 break; 326 } 327 328 return tid; 329} 330 331static int tcm_qla2xxx_check_demo_mode(struct se_portal_group *se_tpg) 332{ 333 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 334 struct tcm_qla2xxx_tpg, se_tpg); 335 336 return QLA_TPG_ATTRIB(tpg)->generate_node_acls; 337} 338 339static int tcm_qla2xxx_check_demo_mode_cache(struct se_portal_group *se_tpg) 340{ 341 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 342 struct tcm_qla2xxx_tpg, se_tpg); 343 344 return QLA_TPG_ATTRIB(tpg)->cache_dynamic_acls; 345} 346 347static int tcm_qla2xxx_check_demo_write_protect(struct se_portal_group *se_tpg) 348{ 349 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 350 struct tcm_qla2xxx_tpg, se_tpg); 351 352 return QLA_TPG_ATTRIB(tpg)->demo_mode_write_protect; 353} 354 355static int tcm_qla2xxx_check_prod_write_protect(struct se_portal_group *se_tpg) 356{ 357 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 358 struct tcm_qla2xxx_tpg, se_tpg); 359 360 return QLA_TPG_ATTRIB(tpg)->prod_mode_write_protect; 361} 362 363static struct se_node_acl *tcm_qla2xxx_alloc_fabric_acl( 364 struct se_portal_group *se_tpg) 365{ 366 struct tcm_qla2xxx_nacl *nacl; 367 368 nacl = kzalloc(sizeof(struct tcm_qla2xxx_nacl), GFP_KERNEL); 369 if (!nacl) { 370 pr_err("Unable to alocate struct tcm_qla2xxx_nacl\n"); 371 return NULL; 372 } 373 374 return &nacl->se_node_acl; 375} 376 377static void tcm_qla2xxx_release_fabric_acl( 378 struct se_portal_group *se_tpg, 379 struct se_node_acl *se_nacl) 380{ 381 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl, 382 struct tcm_qla2xxx_nacl, se_node_acl); 383 kfree(nacl); 384} 385 386static u32 tcm_qla2xxx_tpg_get_inst_index(struct se_portal_group *se_tpg) 387{ 388 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 389 struct tcm_qla2xxx_tpg, se_tpg); 390 391 return tpg->lport_tpgt; 392} 393 394static void tcm_qla2xxx_complete_mcmd(struct work_struct *work) 395{ 396 struct qla_tgt_mgmt_cmd *mcmd = container_of(work, 397 struct qla_tgt_mgmt_cmd, free_work); 398 399 transport_generic_free_cmd(&mcmd->se_cmd, 0); 400} 401 402/* 403 * Called from qla_target_template->free_mcmd(), and will call 404 * tcm_qla2xxx_release_cmd() via normal struct target_core_fabric_ops 405 * release callback. qla_hw_data->hardware_lock is expected to be held 406 */ 407static void tcm_qla2xxx_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd) 408{ 409 INIT_WORK(&mcmd->free_work, tcm_qla2xxx_complete_mcmd); 410 queue_work(tcm_qla2xxx_free_wq, &mcmd->free_work); 411} 412 413static void tcm_qla2xxx_complete_free(struct work_struct *work) 414{ 415 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 416 417 transport_generic_free_cmd(&cmd->se_cmd, 0); 418} 419 420/* 421 * Called from qla_target_template->free_cmd(), and will call 422 * tcm_qla2xxx_release_cmd via normal struct target_core_fabric_ops 423 * release callback. qla_hw_data->hardware_lock is expected to be held 424 */ 425static void tcm_qla2xxx_free_cmd(struct qla_tgt_cmd *cmd) 426{ 427 INIT_WORK(&cmd->work, tcm_qla2xxx_complete_free); 428 queue_work(tcm_qla2xxx_free_wq, &cmd->work); 429} 430 431/* 432 * Called from struct target_core_fabric_ops->check_stop_free() context 433 */ 434static int tcm_qla2xxx_check_stop_free(struct se_cmd *se_cmd) 435{ 436 return target_put_sess_cmd(se_cmd->se_sess, se_cmd); 437} 438 439/* tcm_qla2xxx_release_cmd - Callback from TCM Core to release underlying 440 * fabric descriptor @se_cmd command to release 441 */ 442static void tcm_qla2xxx_release_cmd(struct se_cmd *se_cmd) 443{ 444 struct qla_tgt_cmd *cmd; 445 446 if (se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) { 447 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd, 448 struct qla_tgt_mgmt_cmd, se_cmd); 449 qlt_free_mcmd(mcmd); 450 return; 451 } 452 453 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd); 454 qlt_free_cmd(cmd); 455} 456 457static int tcm_qla2xxx_shutdown_session(struct se_session *se_sess) 458{ 459 struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr; 460 struct scsi_qla_host *vha; 461 unsigned long flags; 462 463 BUG_ON(!sess); 464 vha = sess->vha; 465 466 spin_lock_irqsave(&vha->hw->hardware_lock, flags); 467 target_splice_sess_cmd_list(se_sess); 468 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags); 469 470 return 1; 471} 472 473static void tcm_qla2xxx_close_session(struct se_session *se_sess) 474{ 475 struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr; 476 struct scsi_qla_host *vha; 477 unsigned long flags; 478 479 BUG_ON(!sess); 480 vha = sess->vha; 481 482 spin_lock_irqsave(&vha->hw->hardware_lock, flags); 483 qlt_unreg_sess(sess); 484 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags); 485} 486 487static u32 tcm_qla2xxx_sess_get_index(struct se_session *se_sess) 488{ 489 return 0; 490} 491 492/* 493 * The LIO target core uses DMA_TO_DEVICE to mean that data is going 494 * to the target (eg handling a WRITE) and DMA_FROM_DEVICE to mean 495 * that data is coming from the target (eg handling a READ). However, 496 * this is just the opposite of what we have to tell the DMA mapping 497 * layer -- eg when handling a READ, the HBA will have to DMA the data 498 * out of memory so it can send it to the initiator, which means we 499 * need to use DMA_TO_DEVICE when we map the data. 500 */ 501static enum dma_data_direction tcm_qla2xxx_mapping_dir(struct se_cmd *se_cmd) 502{ 503 if (se_cmd->se_cmd_flags & SCF_BIDI) 504 return DMA_BIDIRECTIONAL; 505 506 switch (se_cmd->data_direction) { 507 case DMA_TO_DEVICE: 508 return DMA_FROM_DEVICE; 509 case DMA_FROM_DEVICE: 510 return DMA_TO_DEVICE; 511 case DMA_NONE: 512 default: 513 return DMA_NONE; 514 } 515} 516 517static int tcm_qla2xxx_write_pending(struct se_cmd *se_cmd) 518{ 519 struct qla_tgt_cmd *cmd = container_of(se_cmd, 520 struct qla_tgt_cmd, se_cmd); 521 522 cmd->bufflen = se_cmd->data_length; 523 cmd->dma_data_direction = tcm_qla2xxx_mapping_dir(se_cmd); 524 525 cmd->sg_cnt = se_cmd->t_data_nents; 526 cmd->sg = se_cmd->t_data_sg; 527 528 /* 529 * qla_target.c:qlt_rdy_to_xfer() will call pci_map_sg() to setup 530 * the SGL mappings into PCIe memory for incoming FCP WRITE data. 531 */ 532 return qlt_rdy_to_xfer(cmd); 533} 534 535static int tcm_qla2xxx_write_pending_status(struct se_cmd *se_cmd) 536{ 537 unsigned long flags; 538 /* 539 * Check for WRITE_PENDING status to determine if we need to wait for 540 * CTIO aborts to be posted via hardware in tcm_qla2xxx_handle_data(). 541 */ 542 spin_lock_irqsave(&se_cmd->t_state_lock, flags); 543 if (se_cmd->t_state == TRANSPORT_WRITE_PENDING || 544 se_cmd->t_state == TRANSPORT_COMPLETE_QF_WP) { 545 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags); 546 wait_for_completion_timeout(&se_cmd->t_transport_stop_comp, 547 3000); 548 return 0; 549 } 550 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags); 551 552 return 0; 553} 554 555static void tcm_qla2xxx_set_default_node_attrs(struct se_node_acl *nacl) 556{ 557 return; 558} 559 560static u32 tcm_qla2xxx_get_task_tag(struct se_cmd *se_cmd) 561{ 562 struct qla_tgt_cmd *cmd = container_of(se_cmd, 563 struct qla_tgt_cmd, se_cmd); 564 565 return cmd->tag; 566} 567 568static int tcm_qla2xxx_get_cmd_state(struct se_cmd *se_cmd) 569{ 570 return 0; 571} 572 573/* 574 * Called from process context in qla_target.c:qlt_do_work() code 575 */ 576static int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd, 577 unsigned char *cdb, uint32_t data_length, int fcp_task_attr, 578 int data_dir, int bidi) 579{ 580 struct se_cmd *se_cmd = &cmd->se_cmd; 581 struct se_session *se_sess; 582 struct qla_tgt_sess *sess; 583 int flags = TARGET_SCF_ACK_KREF; 584 585 if (bidi) 586 flags |= TARGET_SCF_BIDI_OP; 587 588 sess = cmd->sess; 589 if (!sess) { 590 pr_err("Unable to locate struct qla_tgt_sess from qla_tgt_cmd\n"); 591 return -EINVAL; 592 } 593 594 se_sess = sess->se_sess; 595 if (!se_sess) { 596 pr_err("Unable to locate active struct se_session\n"); 597 return -EINVAL; 598 } 599 600 target_submit_cmd(se_cmd, se_sess, cdb, &cmd->sense_buffer[0], 601 cmd->unpacked_lun, data_length, fcp_task_attr, 602 data_dir, flags); 603 return 0; 604} 605 606static void tcm_qla2xxx_handle_data_work(struct work_struct *work) 607{ 608 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 609 610 /* 611 * Ensure that the complete FCP WRITE payload has been received. 612 * Otherwise return an exception via CHECK_CONDITION status. 613 */ 614 if (!cmd->write_data_transferred) { 615 /* 616 * Check if se_cmd has already been aborted via LUN_RESET, and 617 * waiting upon completion in tcm_qla2xxx_write_pending_status() 618 */ 619 if (cmd->se_cmd.transport_state & CMD_T_ABORTED) { 620 complete(&cmd->se_cmd.t_transport_stop_comp); 621 return; 622 } 623 624 cmd->se_cmd.scsi_sense_reason = TCM_CHECK_CONDITION_ABORT_CMD; 625 transport_generic_request_failure(&cmd->se_cmd); 626 return; 627 } 628 629 return target_execute_cmd(&cmd->se_cmd); 630} 631 632/* 633 * Called from qla_target.c:qlt_do_ctio_completion() 634 */ 635static void tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd) 636{ 637 INIT_WORK(&cmd->work, tcm_qla2xxx_handle_data_work); 638 queue_work(tcm_qla2xxx_free_wq, &cmd->work); 639} 640 641/* 642 * Called from qla_target.c:qlt_issue_task_mgmt() 643 */ 644static int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *mcmd, uint32_t lun, 645 uint8_t tmr_func, uint32_t tag) 646{ 647 struct qla_tgt_sess *sess = mcmd->sess; 648 struct se_cmd *se_cmd = &mcmd->se_cmd; 649 650 return target_submit_tmr(se_cmd, sess->se_sess, NULL, lun, mcmd, 651 tmr_func, GFP_ATOMIC, tag, TARGET_SCF_ACK_KREF); 652} 653 654static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd) 655{ 656 struct qla_tgt_cmd *cmd = container_of(se_cmd, 657 struct qla_tgt_cmd, se_cmd); 658 659 cmd->bufflen = se_cmd->data_length; 660 cmd->dma_data_direction = tcm_qla2xxx_mapping_dir(se_cmd); 661 cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED); 662 663 cmd->sg_cnt = se_cmd->t_data_nents; 664 cmd->sg = se_cmd->t_data_sg; 665 cmd->offset = 0; 666 667 /* 668 * Now queue completed DATA_IN the qla2xxx LLD and response ring 669 */ 670 return qlt_xmit_response(cmd, QLA_TGT_XMIT_DATA|QLA_TGT_XMIT_STATUS, 671 se_cmd->scsi_status); 672} 673 674static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd) 675{ 676 struct qla_tgt_cmd *cmd = container_of(se_cmd, 677 struct qla_tgt_cmd, se_cmd); 678 int xmit_type = QLA_TGT_XMIT_STATUS; 679 680 cmd->bufflen = se_cmd->data_length; 681 cmd->sg = NULL; 682 cmd->sg_cnt = 0; 683 cmd->offset = 0; 684 cmd->dma_data_direction = tcm_qla2xxx_mapping_dir(se_cmd); 685 cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED); 686 687 if (se_cmd->data_direction == DMA_FROM_DEVICE) { 688 /* 689 * For FCP_READ with CHECK_CONDITION status, clear cmd->bufflen 690 * for qla_tgt_xmit_response LLD code 691 */ 692 se_cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT; 693 se_cmd->residual_count = se_cmd->data_length; 694 695 cmd->bufflen = 0; 696 } 697 /* 698 * Now queue status response to qla2xxx LLD code and response ring 699 */ 700 return qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status); 701} 702 703static int tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd) 704{ 705 struct se_tmr_req *se_tmr = se_cmd->se_tmr_req; 706 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd, 707 struct qla_tgt_mgmt_cmd, se_cmd); 708 709 pr_debug("queue_tm_rsp: mcmd: %p func: 0x%02x response: 0x%02x\n", 710 mcmd, se_tmr->function, se_tmr->response); 711 /* 712 * Do translation between TCM TM response codes and 713 * QLA2xxx FC TM response codes. 714 */ 715 switch (se_tmr->response) { 716 case TMR_FUNCTION_COMPLETE: 717 mcmd->fc_tm_rsp = FC_TM_SUCCESS; 718 break; 719 case TMR_TASK_DOES_NOT_EXIST: 720 mcmd->fc_tm_rsp = FC_TM_BAD_CMD; 721 break; 722 case TMR_FUNCTION_REJECTED: 723 mcmd->fc_tm_rsp = FC_TM_REJECT; 724 break; 725 case TMR_LUN_DOES_NOT_EXIST: 726 default: 727 mcmd->fc_tm_rsp = FC_TM_FAILED; 728 break; 729 } 730 /* 731 * Queue the TM response to QLA2xxx LLD to build a 732 * CTIO response packet. 733 */ 734 qlt_xmit_tm_rsp(mcmd); 735 736 return 0; 737} 738 739static u16 tcm_qla2xxx_get_fabric_sense_len(void) 740{ 741 return 0; 742} 743 744static u16 tcm_qla2xxx_set_fabric_sense_len(struct se_cmd *se_cmd, 745 u32 sense_length) 746{ 747 return 0; 748} 749 750/* Local pointer to allocated TCM configfs fabric module */ 751struct target_fabric_configfs *tcm_qla2xxx_fabric_configfs; 752struct target_fabric_configfs *tcm_qla2xxx_npiv_fabric_configfs; 753 754static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *, 755 struct tcm_qla2xxx_nacl *, struct qla_tgt_sess *); 756/* 757 * Expected to be called with struct qla_hw_data->hardware_lock held 758 */ 759static void tcm_qla2xxx_clear_nacl_from_fcport_map(struct qla_tgt_sess *sess) 760{ 761 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl; 762 struct se_portal_group *se_tpg = se_nacl->se_tpg; 763 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn; 764 struct tcm_qla2xxx_lport *lport = container_of(se_wwn, 765 struct tcm_qla2xxx_lport, lport_wwn); 766 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl, 767 struct tcm_qla2xxx_nacl, se_node_acl); 768 void *node; 769 770 pr_debug("fc_rport domain: port_id 0x%06x\n", nacl->nport_id); 771 772 node = btree_remove32(&lport->lport_fcport_map, nacl->nport_id); 773 WARN_ON(node && (node != se_nacl)); 774 775 pr_debug("Removed from fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%06x\n", 776 se_nacl, nacl->nport_wwnn, nacl->nport_id); 777 /* 778 * Now clear the se_nacl and session pointers from our HW lport lookup 779 * table mapping for this initiator's fabric S_ID and LOOP_ID entries. 780 * 781 * This is done ahead of callbacks into tcm_qla2xxx_free_session() -> 782 * target_wait_for_sess_cmds() before the session waits for outstanding 783 * I/O to complete, to avoid a race between session shutdown execution 784 * and incoming ATIOs or TMRs picking up a stale se_node_act reference. 785 */ 786 tcm_qla2xxx_clear_sess_lookup(lport, nacl, sess); 787} 788 789static void tcm_qla2xxx_release_session(struct kref *kref) 790{ 791 struct se_session *se_sess = container_of(kref, 792 struct se_session, sess_kref); 793 794 qlt_unreg_sess(se_sess->fabric_sess_ptr); 795} 796 797static void tcm_qla2xxx_put_session(struct se_session *se_sess) 798{ 799 struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr; 800 struct qla_hw_data *ha = sess->vha->hw; 801 unsigned long flags; 802 803 spin_lock_irqsave(&ha->hardware_lock, flags); 804 kref_put(&se_sess->sess_kref, tcm_qla2xxx_release_session); 805 spin_unlock_irqrestore(&ha->hardware_lock, flags); 806} 807 808static void tcm_qla2xxx_put_sess(struct qla_tgt_sess *sess) 809{ 810 tcm_qla2xxx_put_session(sess->se_sess); 811} 812 813static void tcm_qla2xxx_shutdown_sess(struct qla_tgt_sess *sess) 814{ 815 tcm_qla2xxx_shutdown_session(sess->se_sess); 816} 817 818static struct se_node_acl *tcm_qla2xxx_make_nodeacl( 819 struct se_portal_group *se_tpg, 820 struct config_group *group, 821 const char *name) 822{ 823 struct se_node_acl *se_nacl, *se_nacl_new; 824 struct tcm_qla2xxx_nacl *nacl; 825 u64 wwnn; 826 u32 qla2xxx_nexus_depth; 827 828 if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0) 829 return ERR_PTR(-EINVAL); 830 831 se_nacl_new = tcm_qla2xxx_alloc_fabric_acl(se_tpg); 832 if (!se_nacl_new) 833 return ERR_PTR(-ENOMEM); 834/* #warning FIXME: Hardcoded qla2xxx_nexus depth in tcm_qla2xxx_make_nodeacl */ 835 qla2xxx_nexus_depth = 1; 836 837 /* 838 * se_nacl_new may be released by core_tpg_add_initiator_node_acl() 839 * when converting a NodeACL from demo mode -> explict 840 */ 841 se_nacl = core_tpg_add_initiator_node_acl(se_tpg, se_nacl_new, 842 name, qla2xxx_nexus_depth); 843 if (IS_ERR(se_nacl)) { 844 tcm_qla2xxx_release_fabric_acl(se_tpg, se_nacl_new); 845 return se_nacl; 846 } 847 /* 848 * Locate our struct tcm_qla2xxx_nacl and set the FC Nport WWPN 849 */ 850 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 851 nacl->nport_wwnn = wwnn; 852 tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn); 853 854 return se_nacl; 855} 856 857static void tcm_qla2xxx_drop_nodeacl(struct se_node_acl *se_acl) 858{ 859 struct se_portal_group *se_tpg = se_acl->se_tpg; 860 struct tcm_qla2xxx_nacl *nacl = container_of(se_acl, 861 struct tcm_qla2xxx_nacl, se_node_acl); 862 863 core_tpg_del_initiator_node_acl(se_tpg, se_acl, 1); 864 kfree(nacl); 865} 866 867/* Start items for tcm_qla2xxx_tpg_attrib_cit */ 868 869#define DEF_QLA_TPG_ATTRIB(name) \ 870 \ 871static ssize_t tcm_qla2xxx_tpg_attrib_show_##name( \ 872 struct se_portal_group *se_tpg, \ 873 char *page) \ 874{ \ 875 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \ 876 struct tcm_qla2xxx_tpg, se_tpg); \ 877 \ 878 return sprintf(page, "%u\n", QLA_TPG_ATTRIB(tpg)->name); \ 879} \ 880 \ 881static ssize_t tcm_qla2xxx_tpg_attrib_store_##name( \ 882 struct se_portal_group *se_tpg, \ 883 const char *page, \ 884 size_t count) \ 885{ \ 886 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \ 887 struct tcm_qla2xxx_tpg, se_tpg); \ 888 unsigned long val; \ 889 int ret; \ 890 \ 891 ret = kstrtoul(page, 0, &val); \ 892 if (ret < 0) { \ 893 pr_err("kstrtoul() failed with" \ 894 " ret: %d\n", ret); \ 895 return -EINVAL; \ 896 } \ 897 ret = tcm_qla2xxx_set_attrib_##name(tpg, val); \ 898 \ 899 return (!ret) ? count : -EINVAL; \ 900} 901 902#define DEF_QLA_TPG_ATTR_BOOL(_name) \ 903 \ 904static int tcm_qla2xxx_set_attrib_##_name( \ 905 struct tcm_qla2xxx_tpg *tpg, \ 906 unsigned long val) \ 907{ \ 908 struct tcm_qla2xxx_tpg_attrib *a = &tpg->tpg_attrib; \ 909 \ 910 if ((val != 0) && (val != 1)) { \ 911 pr_err("Illegal boolean value %lu\n", val); \ 912 return -EINVAL; \ 913 } \ 914 \ 915 a->_name = val; \ 916 return 0; \ 917} 918 919#define QLA_TPG_ATTR(_name, _mode) \ 920 TF_TPG_ATTRIB_ATTR(tcm_qla2xxx, _name, _mode); 921 922/* 923 * Define tcm_qla2xxx_tpg_attrib_s_generate_node_acls 924 */ 925DEF_QLA_TPG_ATTR_BOOL(generate_node_acls); 926DEF_QLA_TPG_ATTRIB(generate_node_acls); 927QLA_TPG_ATTR(generate_node_acls, S_IRUGO | S_IWUSR); 928 929/* 930 Define tcm_qla2xxx_attrib_s_cache_dynamic_acls 931 */ 932DEF_QLA_TPG_ATTR_BOOL(cache_dynamic_acls); 933DEF_QLA_TPG_ATTRIB(cache_dynamic_acls); 934QLA_TPG_ATTR(cache_dynamic_acls, S_IRUGO | S_IWUSR); 935 936/* 937 * Define tcm_qla2xxx_tpg_attrib_s_demo_mode_write_protect 938 */ 939DEF_QLA_TPG_ATTR_BOOL(demo_mode_write_protect); 940DEF_QLA_TPG_ATTRIB(demo_mode_write_protect); 941QLA_TPG_ATTR(demo_mode_write_protect, S_IRUGO | S_IWUSR); 942 943/* 944 * Define tcm_qla2xxx_tpg_attrib_s_prod_mode_write_protect 945 */ 946DEF_QLA_TPG_ATTR_BOOL(prod_mode_write_protect); 947DEF_QLA_TPG_ATTRIB(prod_mode_write_protect); 948QLA_TPG_ATTR(prod_mode_write_protect, S_IRUGO | S_IWUSR); 949 950static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = { 951 &tcm_qla2xxx_tpg_attrib_generate_node_acls.attr, 952 &tcm_qla2xxx_tpg_attrib_cache_dynamic_acls.attr, 953 &tcm_qla2xxx_tpg_attrib_demo_mode_write_protect.attr, 954 &tcm_qla2xxx_tpg_attrib_prod_mode_write_protect.attr, 955 NULL, 956}; 957 958/* End items for tcm_qla2xxx_tpg_attrib_cit */ 959 960static ssize_t tcm_qla2xxx_tpg_show_enable( 961 struct se_portal_group *se_tpg, 962 char *page) 963{ 964 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 965 struct tcm_qla2xxx_tpg, se_tpg); 966 967 return snprintf(page, PAGE_SIZE, "%d\n", 968 atomic_read(&tpg->lport_tpg_enabled)); 969} 970 971static ssize_t tcm_qla2xxx_tpg_store_enable( 972 struct se_portal_group *se_tpg, 973 const char *page, 974 size_t count) 975{ 976 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn; 977 struct tcm_qla2xxx_lport *lport = container_of(se_wwn, 978 struct tcm_qla2xxx_lport, lport_wwn); 979 struct scsi_qla_host *vha = lport->qla_vha; 980 struct qla_hw_data *ha = vha->hw; 981 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 982 struct tcm_qla2xxx_tpg, se_tpg); 983 unsigned long op; 984 int rc; 985 986 rc = kstrtoul(page, 0, &op); 987 if (rc < 0) { 988 pr_err("kstrtoul() returned %d\n", rc); 989 return -EINVAL; 990 } 991 if ((op != 1) && (op != 0)) { 992 pr_err("Illegal value for tpg_enable: %lu\n", op); 993 return -EINVAL; 994 } 995 996 if (op) { 997 atomic_set(&tpg->lport_tpg_enabled, 1); 998 qlt_enable_vha(vha); 999 } else { 1000 if (!ha->tgt.qla_tgt) { 1001 pr_err("truct qla_hw_data *ha->tgt.qla_tgt is NULL\n"); 1002 return -ENODEV; 1003 } 1004 atomic_set(&tpg->lport_tpg_enabled, 0); 1005 qlt_stop_phase1(ha->tgt.qla_tgt); 1006 } 1007 1008 return count; 1009} 1010 1011TF_TPG_BASE_ATTR(tcm_qla2xxx, enable, S_IRUGO | S_IWUSR); 1012 1013static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = { 1014 &tcm_qla2xxx_tpg_enable.attr, 1015 NULL, 1016}; 1017 1018static struct se_portal_group *tcm_qla2xxx_make_tpg( 1019 struct se_wwn *wwn, 1020 struct config_group *group, 1021 const char *name) 1022{ 1023 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1024 struct tcm_qla2xxx_lport, lport_wwn); 1025 struct tcm_qla2xxx_tpg *tpg; 1026 unsigned long tpgt; 1027 int ret; 1028 1029 if (strstr(name, "tpgt_") != name) 1030 return ERR_PTR(-EINVAL); 1031 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX) 1032 return ERR_PTR(-EINVAL); 1033 1034 if (!lport->qla_npiv_vp && (tpgt != 1)) { 1035 pr_err("In non NPIV mode, a single TPG=1 is used for HW port mappings\n"); 1036 return ERR_PTR(-ENOSYS); 1037 } 1038 1039 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL); 1040 if (!tpg) { 1041 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n"); 1042 return ERR_PTR(-ENOMEM); 1043 } 1044 tpg->lport = lport; 1045 tpg->lport_tpgt = tpgt; 1046 /* 1047 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic 1048 * NodeACLs 1049 */ 1050 QLA_TPG_ATTRIB(tpg)->generate_node_acls = 1; 1051 QLA_TPG_ATTRIB(tpg)->demo_mode_write_protect = 1; 1052 QLA_TPG_ATTRIB(tpg)->cache_dynamic_acls = 1; 1053 1054 ret = core_tpg_register(&tcm_qla2xxx_fabric_configfs->tf_ops, wwn, 1055 &tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL); 1056 if (ret < 0) { 1057 kfree(tpg); 1058 return NULL; 1059 } 1060 /* 1061 * Setup local TPG=1 pointer for non NPIV mode. 1062 */ 1063 if (lport->qla_npiv_vp == NULL) 1064 lport->tpg_1 = tpg; 1065 1066 return &tpg->se_tpg; 1067} 1068 1069static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg) 1070{ 1071 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1072 struct tcm_qla2xxx_tpg, se_tpg); 1073 struct tcm_qla2xxx_lport *lport = tpg->lport; 1074 struct scsi_qla_host *vha = lport->qla_vha; 1075 struct qla_hw_data *ha = vha->hw; 1076 /* 1077 * Call into qla2x_target.c LLD logic to shutdown the active 1078 * FC Nexuses and disable target mode operation for this qla_hw_data 1079 */ 1080 if (ha->tgt.qla_tgt && !ha->tgt.qla_tgt->tgt_stop) 1081 qlt_stop_phase1(ha->tgt.qla_tgt); 1082 1083 core_tpg_deregister(se_tpg); 1084 /* 1085 * Clear local TPG=1 pointer for non NPIV mode. 1086 */ 1087 if (lport->qla_npiv_vp == NULL) 1088 lport->tpg_1 = NULL; 1089 1090 kfree(tpg); 1091} 1092 1093static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg( 1094 struct se_wwn *wwn, 1095 struct config_group *group, 1096 const char *name) 1097{ 1098 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1099 struct tcm_qla2xxx_lport, lport_wwn); 1100 struct tcm_qla2xxx_tpg *tpg; 1101 unsigned long tpgt; 1102 int ret; 1103 1104 if (strstr(name, "tpgt_") != name) 1105 return ERR_PTR(-EINVAL); 1106 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX) 1107 return ERR_PTR(-EINVAL); 1108 1109 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL); 1110 if (!tpg) { 1111 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n"); 1112 return ERR_PTR(-ENOMEM); 1113 } 1114 tpg->lport = lport; 1115 tpg->lport_tpgt = tpgt; 1116 1117 ret = core_tpg_register(&tcm_qla2xxx_npiv_fabric_configfs->tf_ops, wwn, 1118 &tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL); 1119 if (ret < 0) { 1120 kfree(tpg); 1121 return NULL; 1122 } 1123 return &tpg->se_tpg; 1124} 1125 1126/* 1127 * Expected to be called with struct qla_hw_data->hardware_lock held 1128 */ 1129static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_s_id( 1130 scsi_qla_host_t *vha, 1131 const uint8_t *s_id) 1132{ 1133 struct qla_hw_data *ha = vha->hw; 1134 struct tcm_qla2xxx_lport *lport; 1135 struct se_node_acl *se_nacl; 1136 struct tcm_qla2xxx_nacl *nacl; 1137 u32 key; 1138 1139 lport = ha->tgt.target_lport_ptr; 1140 if (!lport) { 1141 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1142 dump_stack(); 1143 return NULL; 1144 } 1145 1146 key = (((unsigned long)s_id[0] << 16) | 1147 ((unsigned long)s_id[1] << 8) | 1148 (unsigned long)s_id[2]); 1149 pr_debug("find_sess_by_s_id: 0x%06x\n", key); 1150 1151 se_nacl = btree_lookup32(&lport->lport_fcport_map, key); 1152 if (!se_nacl) { 1153 pr_debug("Unable to locate s_id: 0x%06x\n", key); 1154 return NULL; 1155 } 1156 pr_debug("find_sess_by_s_id: located se_nacl: %p, initiatorname: %s\n", 1157 se_nacl, se_nacl->initiatorname); 1158 1159 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1160 if (!nacl->qla_tgt_sess) { 1161 pr_err("Unable to locate struct qla_tgt_sess\n"); 1162 return NULL; 1163 } 1164 1165 return nacl->qla_tgt_sess; 1166} 1167 1168/* 1169 * Expected to be called with struct qla_hw_data->hardware_lock held 1170 */ 1171static void tcm_qla2xxx_set_sess_by_s_id( 1172 struct tcm_qla2xxx_lport *lport, 1173 struct se_node_acl *new_se_nacl, 1174 struct tcm_qla2xxx_nacl *nacl, 1175 struct se_session *se_sess, 1176 struct qla_tgt_sess *qla_tgt_sess, 1177 uint8_t *s_id) 1178{ 1179 u32 key; 1180 void *slot; 1181 int rc; 1182 1183 key = (((unsigned long)s_id[0] << 16) | 1184 ((unsigned long)s_id[1] << 8) | 1185 (unsigned long)s_id[2]); 1186 pr_debug("set_sess_by_s_id: %06x\n", key); 1187 1188 slot = btree_lookup32(&lport->lport_fcport_map, key); 1189 if (!slot) { 1190 if (new_se_nacl) { 1191 pr_debug("Setting up new fc_port entry to new_se_nacl\n"); 1192 nacl->nport_id = key; 1193 rc = btree_insert32(&lport->lport_fcport_map, key, 1194 new_se_nacl, GFP_ATOMIC); 1195 if (rc) 1196 printk(KERN_ERR "Unable to insert s_id into fcport_map: %06x\n", 1197 (int)key); 1198 } else { 1199 pr_debug("Wiping nonexisting fc_port entry\n"); 1200 } 1201 1202 qla_tgt_sess->se_sess = se_sess; 1203 nacl->qla_tgt_sess = qla_tgt_sess; 1204 return; 1205 } 1206 1207 if (nacl->qla_tgt_sess) { 1208 if (new_se_nacl == NULL) { 1209 pr_debug("Clearing existing nacl->qla_tgt_sess and fc_port entry\n"); 1210 btree_remove32(&lport->lport_fcport_map, key); 1211 nacl->qla_tgt_sess = NULL; 1212 return; 1213 } 1214 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_port entry\n"); 1215 btree_update32(&lport->lport_fcport_map, key, new_se_nacl); 1216 qla_tgt_sess->se_sess = se_sess; 1217 nacl->qla_tgt_sess = qla_tgt_sess; 1218 return; 1219 } 1220 1221 if (new_se_nacl == NULL) { 1222 pr_debug("Clearing existing fc_port entry\n"); 1223 btree_remove32(&lport->lport_fcport_map, key); 1224 return; 1225 } 1226 1227 pr_debug("Replacing existing fc_port entry w/o active nacl->qla_tgt_sess\n"); 1228 btree_update32(&lport->lport_fcport_map, key, new_se_nacl); 1229 qla_tgt_sess->se_sess = se_sess; 1230 nacl->qla_tgt_sess = qla_tgt_sess; 1231 1232 pr_debug("Setup nacl->qla_tgt_sess %p by s_id for se_nacl: %p, initiatorname: %s\n", 1233 nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname); 1234} 1235 1236/* 1237 * Expected to be called with struct qla_hw_data->hardware_lock held 1238 */ 1239static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_loop_id( 1240 scsi_qla_host_t *vha, 1241 const uint16_t loop_id) 1242{ 1243 struct qla_hw_data *ha = vha->hw; 1244 struct tcm_qla2xxx_lport *lport; 1245 struct se_node_acl *se_nacl; 1246 struct tcm_qla2xxx_nacl *nacl; 1247 struct tcm_qla2xxx_fc_loopid *fc_loopid; 1248 1249 lport = ha->tgt.target_lport_ptr; 1250 if (!lport) { 1251 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1252 dump_stack(); 1253 return NULL; 1254 } 1255 1256 pr_debug("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id); 1257 1258 fc_loopid = lport->lport_loopid_map + loop_id; 1259 se_nacl = fc_loopid->se_nacl; 1260 if (!se_nacl) { 1261 pr_debug("Unable to locate se_nacl by loop_id: 0x%04x\n", 1262 loop_id); 1263 return NULL; 1264 } 1265 1266 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1267 1268 if (!nacl->qla_tgt_sess) { 1269 pr_err("Unable to locate struct qla_tgt_sess\n"); 1270 return NULL; 1271 } 1272 1273 return nacl->qla_tgt_sess; 1274} 1275 1276/* 1277 * Expected to be called with struct qla_hw_data->hardware_lock held 1278 */ 1279static void tcm_qla2xxx_set_sess_by_loop_id( 1280 struct tcm_qla2xxx_lport *lport, 1281 struct se_node_acl *new_se_nacl, 1282 struct tcm_qla2xxx_nacl *nacl, 1283 struct se_session *se_sess, 1284 struct qla_tgt_sess *qla_tgt_sess, 1285 uint16_t loop_id) 1286{ 1287 struct se_node_acl *saved_nacl; 1288 struct tcm_qla2xxx_fc_loopid *fc_loopid; 1289 1290 pr_debug("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id); 1291 1292 fc_loopid = &((struct tcm_qla2xxx_fc_loopid *) 1293 lport->lport_loopid_map)[loop_id]; 1294 1295 saved_nacl = fc_loopid->se_nacl; 1296 if (!saved_nacl) { 1297 pr_debug("Setting up new fc_loopid->se_nacl to new_se_nacl\n"); 1298 fc_loopid->se_nacl = new_se_nacl; 1299 if (qla_tgt_sess->se_sess != se_sess) 1300 qla_tgt_sess->se_sess = se_sess; 1301 if (nacl->qla_tgt_sess != qla_tgt_sess) 1302 nacl->qla_tgt_sess = qla_tgt_sess; 1303 return; 1304 } 1305 1306 if (nacl->qla_tgt_sess) { 1307 if (new_se_nacl == NULL) { 1308 pr_debug("Clearing nacl->qla_tgt_sess and fc_loopid->se_nacl\n"); 1309 fc_loopid->se_nacl = NULL; 1310 nacl->qla_tgt_sess = NULL; 1311 return; 1312 } 1313 1314 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_loopid->se_nacl\n"); 1315 fc_loopid->se_nacl = new_se_nacl; 1316 if (qla_tgt_sess->se_sess != se_sess) 1317 qla_tgt_sess->se_sess = se_sess; 1318 if (nacl->qla_tgt_sess != qla_tgt_sess) 1319 nacl->qla_tgt_sess = qla_tgt_sess; 1320 return; 1321 } 1322 1323 if (new_se_nacl == NULL) { 1324 pr_debug("Clearing fc_loopid->se_nacl\n"); 1325 fc_loopid->se_nacl = NULL; 1326 return; 1327 } 1328 1329 pr_debug("Replacing existing fc_loopid->se_nacl w/o active nacl->qla_tgt_sess\n"); 1330 fc_loopid->se_nacl = new_se_nacl; 1331 if (qla_tgt_sess->se_sess != se_sess) 1332 qla_tgt_sess->se_sess = se_sess; 1333 if (nacl->qla_tgt_sess != qla_tgt_sess) 1334 nacl->qla_tgt_sess = qla_tgt_sess; 1335 1336 pr_debug("Setup nacl->qla_tgt_sess %p by loop_id for se_nacl: %p, initiatorname: %s\n", 1337 nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname); 1338} 1339 1340/* 1341 * Should always be called with qla_hw_data->hardware_lock held. 1342 */ 1343static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *lport, 1344 struct tcm_qla2xxx_nacl *nacl, struct qla_tgt_sess *sess) 1345{ 1346 struct se_session *se_sess = sess->se_sess; 1347 unsigned char be_sid[3]; 1348 1349 be_sid[0] = sess->s_id.b.domain; 1350 be_sid[1] = sess->s_id.b.area; 1351 be_sid[2] = sess->s_id.b.al_pa; 1352 1353 tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess, 1354 sess, be_sid); 1355 tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess, 1356 sess, sess->loop_id); 1357} 1358 1359static void tcm_qla2xxx_free_session(struct qla_tgt_sess *sess) 1360{ 1361 struct qla_tgt *tgt = sess->tgt; 1362 struct qla_hw_data *ha = tgt->ha; 1363 struct se_session *se_sess; 1364 struct se_node_acl *se_nacl; 1365 struct tcm_qla2xxx_lport *lport; 1366 struct tcm_qla2xxx_nacl *nacl; 1367 1368 BUG_ON(in_interrupt()); 1369 1370 se_sess = sess->se_sess; 1371 if (!se_sess) { 1372 pr_err("struct qla_tgt_sess->se_sess is NULL\n"); 1373 dump_stack(); 1374 return; 1375 } 1376 se_nacl = se_sess->se_node_acl; 1377 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1378 1379 lport = ha->tgt.target_lport_ptr; 1380 if (!lport) { 1381 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1382 dump_stack(); 1383 return; 1384 } 1385 target_wait_for_sess_cmds(se_sess, 0); 1386 1387 transport_deregister_session_configfs(sess->se_sess); 1388 transport_deregister_session(sess->se_sess); 1389} 1390 1391/* 1392 * Called via qlt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl() 1393 * to locate struct se_node_acl 1394 */ 1395static int tcm_qla2xxx_check_initiator_node_acl( 1396 scsi_qla_host_t *vha, 1397 unsigned char *fc_wwpn, 1398 void *qla_tgt_sess, 1399 uint8_t *s_id, 1400 uint16_t loop_id) 1401{ 1402 struct qla_hw_data *ha = vha->hw; 1403 struct tcm_qla2xxx_lport *lport; 1404 struct tcm_qla2xxx_tpg *tpg; 1405 struct tcm_qla2xxx_nacl *nacl; 1406 struct se_portal_group *se_tpg; 1407 struct se_node_acl *se_nacl; 1408 struct se_session *se_sess; 1409 struct qla_tgt_sess *sess = qla_tgt_sess; 1410 unsigned char port_name[36]; 1411 unsigned long flags; 1412 1413 lport = ha->tgt.target_lport_ptr; 1414 if (!lport) { 1415 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1416 dump_stack(); 1417 return -EINVAL; 1418 } 1419 /* 1420 * Locate the TPG=1 reference.. 1421 */ 1422 tpg = lport->tpg_1; 1423 if (!tpg) { 1424 pr_err("Unable to lcoate struct tcm_qla2xxx_lport->tpg_1\n"); 1425 return -EINVAL; 1426 } 1427 se_tpg = &tpg->se_tpg; 1428 1429 se_sess = transport_init_session(); 1430 if (IS_ERR(se_sess)) { 1431 pr_err("Unable to initialize struct se_session\n"); 1432 return PTR_ERR(se_sess); 1433 } 1434 /* 1435 * Format the FCP Initiator port_name into colon seperated values to 1436 * match the format by tcm_qla2xxx explict ConfigFS NodeACLs. 1437 */ 1438 memset(&port_name, 0, 36); 1439 snprintf(port_name, 36, "%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x", 1440 fc_wwpn[0], fc_wwpn[1], fc_wwpn[2], fc_wwpn[3], fc_wwpn[4], 1441 fc_wwpn[5], fc_wwpn[6], fc_wwpn[7]); 1442 /* 1443 * Locate our struct se_node_acl either from an explict NodeACL created 1444 * via ConfigFS, or via running in TPG demo mode. 1445 */ 1446 se_sess->se_node_acl = core_tpg_check_initiator_node_acl(se_tpg, 1447 port_name); 1448 if (!se_sess->se_node_acl) { 1449 transport_free_session(se_sess); 1450 return -EINVAL; 1451 } 1452 se_nacl = se_sess->se_node_acl; 1453 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1454 /* 1455 * And now setup the new se_nacl and session pointers into our HW lport 1456 * mappings for fabric S_ID and LOOP_ID. 1457 */ 1458 spin_lock_irqsave(&ha->hardware_lock, flags); 1459 tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl, se_sess, 1460 qla_tgt_sess, s_id); 1461 tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl, se_sess, 1462 qla_tgt_sess, loop_id); 1463 spin_unlock_irqrestore(&ha->hardware_lock, flags); 1464 /* 1465 * Finally register the new FC Nexus with TCM 1466 */ 1467 __transport_register_session(se_nacl->se_tpg, se_nacl, se_sess, sess); 1468 1469 return 0; 1470} 1471 1472/* 1473 * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path. 1474 */ 1475static struct qla_tgt_func_tmpl tcm_qla2xxx_template = { 1476 .handle_cmd = tcm_qla2xxx_handle_cmd, 1477 .handle_data = tcm_qla2xxx_handle_data, 1478 .handle_tmr = tcm_qla2xxx_handle_tmr, 1479 .free_cmd = tcm_qla2xxx_free_cmd, 1480 .free_mcmd = tcm_qla2xxx_free_mcmd, 1481 .free_session = tcm_qla2xxx_free_session, 1482 .check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl, 1483 .find_sess_by_s_id = tcm_qla2xxx_find_sess_by_s_id, 1484 .find_sess_by_loop_id = tcm_qla2xxx_find_sess_by_loop_id, 1485 .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map, 1486 .put_sess = tcm_qla2xxx_put_sess, 1487 .shutdown_sess = tcm_qla2xxx_shutdown_sess, 1488}; 1489 1490static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport) 1491{ 1492 int rc; 1493 1494 rc = btree_init32(&lport->lport_fcport_map); 1495 if (rc) { 1496 pr_err("Unable to initialize lport->lport_fcport_map btree\n"); 1497 return rc; 1498 } 1499 1500 lport->lport_loopid_map = vmalloc(sizeof(struct tcm_qla2xxx_fc_loopid) * 1501 65536); 1502 if (!lport->lport_loopid_map) { 1503 pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n", 1504 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536); 1505 btree_destroy32(&lport->lport_fcport_map); 1506 return -ENOMEM; 1507 } 1508 memset(lport->lport_loopid_map, 0, sizeof(struct tcm_qla2xxx_fc_loopid) 1509 * 65536); 1510 pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n", 1511 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536); 1512 return 0; 1513} 1514 1515static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha) 1516{ 1517 struct qla_hw_data *ha = vha->hw; 1518 struct tcm_qla2xxx_lport *lport; 1519 /* 1520 * Setup local pointer to vha, NPIV VP pointer (if present) and 1521 * vha->tcm_lport pointer 1522 */ 1523 lport = (struct tcm_qla2xxx_lport *)ha->tgt.target_lport_ptr; 1524 lport->qla_vha = vha; 1525 1526 return 0; 1527} 1528 1529static struct se_wwn *tcm_qla2xxx_make_lport( 1530 struct target_fabric_configfs *tf, 1531 struct config_group *group, 1532 const char *name) 1533{ 1534 struct tcm_qla2xxx_lport *lport; 1535 u64 wwpn; 1536 int ret = -ENODEV; 1537 1538 if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0) 1539 return ERR_PTR(-EINVAL); 1540 1541 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL); 1542 if (!lport) { 1543 pr_err("Unable to allocate struct tcm_qla2xxx_lport\n"); 1544 return ERR_PTR(-ENOMEM); 1545 } 1546 lport->lport_wwpn = wwpn; 1547 tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN, 1548 wwpn); 1549 1550 ret = tcm_qla2xxx_init_lport(lport); 1551 if (ret != 0) 1552 goto out; 1553 1554 ret = qlt_lport_register(&tcm_qla2xxx_template, wwpn, 1555 tcm_qla2xxx_lport_register_cb, lport); 1556 if (ret != 0) 1557 goto out_lport; 1558 1559 return &lport->lport_wwn; 1560out_lport: 1561 vfree(lport->lport_loopid_map); 1562 btree_destroy32(&lport->lport_fcport_map); 1563out: 1564 kfree(lport); 1565 return ERR_PTR(ret); 1566} 1567 1568static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn) 1569{ 1570 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1571 struct tcm_qla2xxx_lport, lport_wwn); 1572 struct scsi_qla_host *vha = lport->qla_vha; 1573 struct qla_hw_data *ha = vha->hw; 1574 struct se_node_acl *node; 1575 u32 key = 0; 1576 1577 /* 1578 * Call into qla2x_target.c LLD logic to complete the 1579 * shutdown of struct qla_tgt after the call to 1580 * qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above.. 1581 */ 1582 if (ha->tgt.qla_tgt && !ha->tgt.qla_tgt->tgt_stopped) 1583 qlt_stop_phase2(ha->tgt.qla_tgt); 1584 1585 qlt_lport_deregister(vha); 1586 1587 vfree(lport->lport_loopid_map); 1588 btree_for_each_safe32(&lport->lport_fcport_map, key, node) 1589 btree_remove32(&lport->lport_fcport_map, key); 1590 btree_destroy32(&lport->lport_fcport_map); 1591 kfree(lport); 1592} 1593 1594static struct se_wwn *tcm_qla2xxx_npiv_make_lport( 1595 struct target_fabric_configfs *tf, 1596 struct config_group *group, 1597 const char *name) 1598{ 1599 struct tcm_qla2xxx_lport *lport; 1600 u64 npiv_wwpn, npiv_wwnn; 1601 int ret; 1602 1603 if (tcm_qla2xxx_npiv_parse_wwn(name, strlen(name)+1, 1604 &npiv_wwpn, &npiv_wwnn) < 0) 1605 return ERR_PTR(-EINVAL); 1606 1607 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL); 1608 if (!lport) { 1609 pr_err("Unable to allocate struct tcm_qla2xxx_lport for NPIV\n"); 1610 return ERR_PTR(-ENOMEM); 1611 } 1612 lport->lport_npiv_wwpn = npiv_wwpn; 1613 lport->lport_npiv_wwnn = npiv_wwnn; 1614 tcm_qla2xxx_npiv_format_wwn(&lport->lport_npiv_name[0], 1615 TCM_QLA2XXX_NAMELEN, npiv_wwpn, npiv_wwnn); 1616 1617/* FIXME: tcm_qla2xxx_npiv_make_lport */ 1618 ret = -ENOSYS; 1619 if (ret != 0) 1620 goto out; 1621 1622 return &lport->lport_wwn; 1623out: 1624 kfree(lport); 1625 return ERR_PTR(ret); 1626} 1627 1628static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn) 1629{ 1630 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1631 struct tcm_qla2xxx_lport, lport_wwn); 1632 struct scsi_qla_host *vha = lport->qla_vha; 1633 struct Scsi_Host *sh = vha->host; 1634 /* 1635 * Notify libfc that we want to release the lport->npiv_vport 1636 */ 1637 fc_vport_terminate(lport->npiv_vport); 1638 1639 scsi_host_put(sh); 1640 kfree(lport); 1641} 1642 1643 1644static ssize_t tcm_qla2xxx_wwn_show_attr_version( 1645 struct target_fabric_configfs *tf, 1646 char *page) 1647{ 1648 return sprintf(page, 1649 "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s on " 1650 UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname, 1651 utsname()->machine); 1652} 1653 1654TF_WWN_ATTR_RO(tcm_qla2xxx, version); 1655 1656static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = { 1657 &tcm_qla2xxx_wwn_version.attr, 1658 NULL, 1659}; 1660 1661static struct target_core_fabric_ops tcm_qla2xxx_ops = { 1662 .get_fabric_name = tcm_qla2xxx_get_fabric_name, 1663 .get_fabric_proto_ident = tcm_qla2xxx_get_fabric_proto_ident, 1664 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn, 1665 .tpg_get_tag = tcm_qla2xxx_get_tag, 1666 .tpg_get_default_depth = tcm_qla2xxx_get_default_depth, 1667 .tpg_get_pr_transport_id = tcm_qla2xxx_get_pr_transport_id, 1668 .tpg_get_pr_transport_id_len = tcm_qla2xxx_get_pr_transport_id_len, 1669 .tpg_parse_pr_out_transport_id = tcm_qla2xxx_parse_pr_out_transport_id, 1670 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode, 1671 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache, 1672 .tpg_check_demo_mode_write_protect = 1673 tcm_qla2xxx_check_demo_write_protect, 1674 .tpg_check_prod_mode_write_protect = 1675 tcm_qla2xxx_check_prod_write_protect, 1676 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_true, 1677 .tpg_alloc_fabric_acl = tcm_qla2xxx_alloc_fabric_acl, 1678 .tpg_release_fabric_acl = tcm_qla2xxx_release_fabric_acl, 1679 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index, 1680 .check_stop_free = tcm_qla2xxx_check_stop_free, 1681 .release_cmd = tcm_qla2xxx_release_cmd, 1682 .put_session = tcm_qla2xxx_put_session, 1683 .shutdown_session = tcm_qla2xxx_shutdown_session, 1684 .close_session = tcm_qla2xxx_close_session, 1685 .sess_get_index = tcm_qla2xxx_sess_get_index, 1686 .sess_get_initiator_sid = NULL, 1687 .write_pending = tcm_qla2xxx_write_pending, 1688 .write_pending_status = tcm_qla2xxx_write_pending_status, 1689 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs, 1690 .get_task_tag = tcm_qla2xxx_get_task_tag, 1691 .get_cmd_state = tcm_qla2xxx_get_cmd_state, 1692 .queue_data_in = tcm_qla2xxx_queue_data_in, 1693 .queue_status = tcm_qla2xxx_queue_status, 1694 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp, 1695 .get_fabric_sense_len = tcm_qla2xxx_get_fabric_sense_len, 1696 .set_fabric_sense_len = tcm_qla2xxx_set_fabric_sense_len, 1697 /* 1698 * Setup function pointers for generic logic in 1699 * target_core_fabric_configfs.c 1700 */ 1701 .fabric_make_wwn = tcm_qla2xxx_make_lport, 1702 .fabric_drop_wwn = tcm_qla2xxx_drop_lport, 1703 .fabric_make_tpg = tcm_qla2xxx_make_tpg, 1704 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg, 1705 .fabric_post_link = NULL, 1706 .fabric_pre_unlink = NULL, 1707 .fabric_make_np = NULL, 1708 .fabric_drop_np = NULL, 1709 .fabric_make_nodeacl = tcm_qla2xxx_make_nodeacl, 1710 .fabric_drop_nodeacl = tcm_qla2xxx_drop_nodeacl, 1711}; 1712 1713static struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = { 1714 .get_fabric_name = tcm_qla2xxx_npiv_get_fabric_name, 1715 .get_fabric_proto_ident = tcm_qla2xxx_get_fabric_proto_ident, 1716 .tpg_get_wwn = tcm_qla2xxx_npiv_get_fabric_wwn, 1717 .tpg_get_tag = tcm_qla2xxx_get_tag, 1718 .tpg_get_default_depth = tcm_qla2xxx_get_default_depth, 1719 .tpg_get_pr_transport_id = tcm_qla2xxx_get_pr_transport_id, 1720 .tpg_get_pr_transport_id_len = tcm_qla2xxx_get_pr_transport_id_len, 1721 .tpg_parse_pr_out_transport_id = tcm_qla2xxx_parse_pr_out_transport_id, 1722 .tpg_check_demo_mode = tcm_qla2xxx_check_false, 1723 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_true, 1724 .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_true, 1725 .tpg_check_prod_mode_write_protect = tcm_qla2xxx_check_false, 1726 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_true, 1727 .tpg_alloc_fabric_acl = tcm_qla2xxx_alloc_fabric_acl, 1728 .tpg_release_fabric_acl = tcm_qla2xxx_release_fabric_acl, 1729 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index, 1730 .release_cmd = tcm_qla2xxx_release_cmd, 1731 .put_session = tcm_qla2xxx_put_session, 1732 .shutdown_session = tcm_qla2xxx_shutdown_session, 1733 .close_session = tcm_qla2xxx_close_session, 1734 .sess_get_index = tcm_qla2xxx_sess_get_index, 1735 .sess_get_initiator_sid = NULL, 1736 .write_pending = tcm_qla2xxx_write_pending, 1737 .write_pending_status = tcm_qla2xxx_write_pending_status, 1738 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs, 1739 .get_task_tag = tcm_qla2xxx_get_task_tag, 1740 .get_cmd_state = tcm_qla2xxx_get_cmd_state, 1741 .queue_data_in = tcm_qla2xxx_queue_data_in, 1742 .queue_status = tcm_qla2xxx_queue_status, 1743 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp, 1744 .get_fabric_sense_len = tcm_qla2xxx_get_fabric_sense_len, 1745 .set_fabric_sense_len = tcm_qla2xxx_set_fabric_sense_len, 1746 /* 1747 * Setup function pointers for generic logic in 1748 * target_core_fabric_configfs.c 1749 */ 1750 .fabric_make_wwn = tcm_qla2xxx_npiv_make_lport, 1751 .fabric_drop_wwn = tcm_qla2xxx_npiv_drop_lport, 1752 .fabric_make_tpg = tcm_qla2xxx_npiv_make_tpg, 1753 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg, 1754 .fabric_post_link = NULL, 1755 .fabric_pre_unlink = NULL, 1756 .fabric_make_np = NULL, 1757 .fabric_drop_np = NULL, 1758 .fabric_make_nodeacl = tcm_qla2xxx_make_nodeacl, 1759 .fabric_drop_nodeacl = tcm_qla2xxx_drop_nodeacl, 1760}; 1761 1762static int tcm_qla2xxx_register_configfs(void) 1763{ 1764 struct target_fabric_configfs *fabric, *npiv_fabric; 1765 int ret; 1766 1767 pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on " 1768 UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname, 1769 utsname()->machine); 1770 /* 1771 * Register the top level struct config_item_type with TCM core 1772 */ 1773 fabric = target_fabric_configfs_init(THIS_MODULE, "qla2xxx"); 1774 if (IS_ERR(fabric)) { 1775 pr_err("target_fabric_configfs_init() failed\n"); 1776 return PTR_ERR(fabric); 1777 } 1778 /* 1779 * Setup fabric->tf_ops from our local tcm_qla2xxx_ops 1780 */ 1781 fabric->tf_ops = tcm_qla2xxx_ops; 1782 /* 1783 * Setup default attribute lists for various fabric->tf_cit_tmpl 1784 */ 1785 TF_CIT_TMPL(fabric)->tfc_wwn_cit.ct_attrs = tcm_qla2xxx_wwn_attrs; 1786 TF_CIT_TMPL(fabric)->tfc_tpg_base_cit.ct_attrs = tcm_qla2xxx_tpg_attrs; 1787 TF_CIT_TMPL(fabric)->tfc_tpg_attrib_cit.ct_attrs = 1788 tcm_qla2xxx_tpg_attrib_attrs; 1789 TF_CIT_TMPL(fabric)->tfc_tpg_param_cit.ct_attrs = NULL; 1790 TF_CIT_TMPL(fabric)->tfc_tpg_np_base_cit.ct_attrs = NULL; 1791 TF_CIT_TMPL(fabric)->tfc_tpg_nacl_base_cit.ct_attrs = NULL; 1792 TF_CIT_TMPL(fabric)->tfc_tpg_nacl_attrib_cit.ct_attrs = NULL; 1793 TF_CIT_TMPL(fabric)->tfc_tpg_nacl_auth_cit.ct_attrs = NULL; 1794 TF_CIT_TMPL(fabric)->tfc_tpg_nacl_param_cit.ct_attrs = NULL; 1795 /* 1796 * Register the fabric for use within TCM 1797 */ 1798 ret = target_fabric_configfs_register(fabric); 1799 if (ret < 0) { 1800 pr_err("target_fabric_configfs_register() failed for TCM_QLA2XXX\n"); 1801 return ret; 1802 } 1803 /* 1804 * Setup our local pointer to *fabric 1805 */ 1806 tcm_qla2xxx_fabric_configfs = fabric; 1807 pr_debug("TCM_QLA2XXX[0] - Set fabric -> tcm_qla2xxx_fabric_configfs\n"); 1808 1809 /* 1810 * Register the top level struct config_item_type for NPIV with TCM core 1811 */ 1812 npiv_fabric = target_fabric_configfs_init(THIS_MODULE, "qla2xxx_npiv"); 1813 if (IS_ERR(npiv_fabric)) { 1814 pr_err("target_fabric_configfs_init() failed\n"); 1815 ret = PTR_ERR(npiv_fabric); 1816 goto out_fabric; 1817 } 1818 /* 1819 * Setup fabric->tf_ops from our local tcm_qla2xxx_npiv_ops 1820 */ 1821 npiv_fabric->tf_ops = tcm_qla2xxx_npiv_ops; 1822 /* 1823 * Setup default attribute lists for various npiv_fabric->tf_cit_tmpl 1824 */ 1825 TF_CIT_TMPL(npiv_fabric)->tfc_wwn_cit.ct_attrs = tcm_qla2xxx_wwn_attrs; 1826 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_base_cit.ct_attrs = NULL; 1827 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_attrib_cit.ct_attrs = NULL; 1828 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_param_cit.ct_attrs = NULL; 1829 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_np_base_cit.ct_attrs = NULL; 1830 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_base_cit.ct_attrs = NULL; 1831 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_attrib_cit.ct_attrs = NULL; 1832 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_auth_cit.ct_attrs = NULL; 1833 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_param_cit.ct_attrs = NULL; 1834 /* 1835 * Register the npiv_fabric for use within TCM 1836 */ 1837 ret = target_fabric_configfs_register(npiv_fabric); 1838 if (ret < 0) { 1839 pr_err("target_fabric_configfs_register() failed for TCM_QLA2XXX\n"); 1840 goto out_fabric; 1841 } 1842 /* 1843 * Setup our local pointer to *npiv_fabric 1844 */ 1845 tcm_qla2xxx_npiv_fabric_configfs = npiv_fabric; 1846 pr_debug("TCM_QLA2XXX[0] - Set fabric -> tcm_qla2xxx_npiv_fabric_configfs\n"); 1847 1848 tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free", 1849 WQ_MEM_RECLAIM, 0); 1850 if (!tcm_qla2xxx_free_wq) { 1851 ret = -ENOMEM; 1852 goto out_fabric_npiv; 1853 } 1854 1855 tcm_qla2xxx_cmd_wq = alloc_workqueue("tcm_qla2xxx_cmd", 0, 0); 1856 if (!tcm_qla2xxx_cmd_wq) { 1857 ret = -ENOMEM; 1858 goto out_free_wq; 1859 } 1860 1861 return 0; 1862 1863out_free_wq: 1864 destroy_workqueue(tcm_qla2xxx_free_wq); 1865out_fabric_npiv: 1866 target_fabric_configfs_deregister(tcm_qla2xxx_npiv_fabric_configfs); 1867out_fabric: 1868 target_fabric_configfs_deregister(tcm_qla2xxx_fabric_configfs); 1869 return ret; 1870} 1871 1872static void tcm_qla2xxx_deregister_configfs(void) 1873{ 1874 destroy_workqueue(tcm_qla2xxx_cmd_wq); 1875 destroy_workqueue(tcm_qla2xxx_free_wq); 1876 1877 target_fabric_configfs_deregister(tcm_qla2xxx_fabric_configfs); 1878 tcm_qla2xxx_fabric_configfs = NULL; 1879 pr_debug("TCM_QLA2XXX[0] - Cleared tcm_qla2xxx_fabric_configfs\n"); 1880 1881 target_fabric_configfs_deregister(tcm_qla2xxx_npiv_fabric_configfs); 1882 tcm_qla2xxx_npiv_fabric_configfs = NULL; 1883 pr_debug("TCM_QLA2XXX[0] - Cleared tcm_qla2xxx_npiv_fabric_configfs\n"); 1884} 1885 1886static int __init tcm_qla2xxx_init(void) 1887{ 1888 int ret; 1889 1890 ret = tcm_qla2xxx_register_configfs(); 1891 if (ret < 0) 1892 return ret; 1893 1894 return 0; 1895} 1896 1897static void __exit tcm_qla2xxx_exit(void) 1898{ 1899 tcm_qla2xxx_deregister_configfs(); 1900} 1901 1902MODULE_DESCRIPTION("TCM QLA2XXX series NPIV enabled fabric driver"); 1903MODULE_LICENSE("GPL"); 1904module_init(tcm_qla2xxx_init); 1905module_exit(tcm_qla2xxx_exit); 1906