tcm_qla2xxx.c revision 75f8c1f693eefacc17a65614eb4ed1ee0f84fda6
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 <linux/string.h> 42#include <linux/ctype.h> 43#include <asm/unaligned.h> 44#include <scsi/scsi.h> 45#include <scsi/scsi_host.h> 46#include <scsi/scsi_device.h> 47#include <scsi/scsi_cmnd.h> 48#include <target/target_core_base.h> 49#include <target/target_core_fabric.h> 50#include <target/target_core_fabric_configfs.h> 51#include <target/target_core_configfs.h> 52#include <target/configfs_macros.h> 53 54#include "qla_def.h" 55#include "qla_target.h" 56#include "tcm_qla2xxx.h" 57 58struct workqueue_struct *tcm_qla2xxx_free_wq; 59struct workqueue_struct *tcm_qla2xxx_cmd_wq; 60 61static int tcm_qla2xxx_check_true(struct se_portal_group *se_tpg) 62{ 63 return 1; 64} 65 66static int tcm_qla2xxx_check_false(struct se_portal_group *se_tpg) 67{ 68 return 0; 69} 70 71/* 72 * Parse WWN. 73 * If strict, we require lower-case hex and colon separators to be sure 74 * the name is the same as what would be generated by ft_format_wwn() 75 * so the name and wwn are mapped one-to-one. 76 */ 77static ssize_t tcm_qla2xxx_parse_wwn(const char *name, u64 *wwn, int strict) 78{ 79 const char *cp; 80 char c; 81 u32 nibble; 82 u32 byte = 0; 83 u32 pos = 0; 84 u32 err; 85 86 *wwn = 0; 87 for (cp = name; cp < &name[TCM_QLA2XXX_NAMELEN - 1]; cp++) { 88 c = *cp; 89 if (c == '\n' && cp[1] == '\0') 90 continue; 91 if (strict && pos++ == 2 && byte++ < 7) { 92 pos = 0; 93 if (c == ':') 94 continue; 95 err = 1; 96 goto fail; 97 } 98 if (c == '\0') { 99 err = 2; 100 if (strict && byte != 8) 101 goto fail; 102 return cp - name; 103 } 104 err = 3; 105 if (isdigit(c)) 106 nibble = c - '0'; 107 else if (isxdigit(c) && (islower(c) || !strict)) 108 nibble = tolower(c) - 'a' + 10; 109 else 110 goto fail; 111 *wwn = (*wwn << 4) | nibble; 112 } 113 err = 4; 114fail: 115 pr_debug("err %u len %zu pos %u byte %u\n", 116 err, cp - name, pos, byte); 117 return -1; 118} 119 120static ssize_t tcm_qla2xxx_format_wwn(char *buf, size_t len, u64 wwn) 121{ 122 u8 b[8]; 123 124 put_unaligned_be64(wwn, b); 125 return snprintf(buf, len, 126 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x", 127 b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7]); 128} 129 130static char *tcm_qla2xxx_get_fabric_name(void) 131{ 132 return "qla2xxx"; 133} 134 135/* 136 * From drivers/scsi/scsi_transport_fc.c:fc_parse_wwn 137 */ 138static int tcm_qla2xxx_npiv_extract_wwn(const char *ns, u64 *nm) 139{ 140 unsigned int i, j, value; 141 u8 wwn[8]; 142 143 memset(wwn, 0, sizeof(wwn)); 144 145 /* Validate and store the new name */ 146 for (i = 0, j = 0; i < 16; i++) { 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 sess->tearing_down = 1; 468 target_splice_sess_cmd_list(se_sess); 469 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags); 470 471 return 1; 472} 473 474static void tcm_qla2xxx_close_session(struct se_session *se_sess) 475{ 476 struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr; 477 struct scsi_qla_host *vha; 478 unsigned long flags; 479 480 BUG_ON(!sess); 481 vha = sess->vha; 482 483 spin_lock_irqsave(&vha->hw->hardware_lock, flags); 484 qlt_unreg_sess(sess); 485 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags); 486} 487 488static u32 tcm_qla2xxx_sess_get_index(struct se_session *se_sess) 489{ 490 return 0; 491} 492 493/* 494 * The LIO target core uses DMA_TO_DEVICE to mean that data is going 495 * to the target (eg handling a WRITE) and DMA_FROM_DEVICE to mean 496 * that data is coming from the target (eg handling a READ). However, 497 * this is just the opposite of what we have to tell the DMA mapping 498 * layer -- eg when handling a READ, the HBA will have to DMA the data 499 * out of memory so it can send it to the initiator, which means we 500 * need to use DMA_TO_DEVICE when we map the data. 501 */ 502static enum dma_data_direction tcm_qla2xxx_mapping_dir(struct se_cmd *se_cmd) 503{ 504 if (se_cmd->se_cmd_flags & SCF_BIDI) 505 return DMA_BIDIRECTIONAL; 506 507 switch (se_cmd->data_direction) { 508 case DMA_TO_DEVICE: 509 return DMA_FROM_DEVICE; 510 case DMA_FROM_DEVICE: 511 return DMA_TO_DEVICE; 512 case DMA_NONE: 513 default: 514 return DMA_NONE; 515 } 516} 517 518static int tcm_qla2xxx_write_pending(struct se_cmd *se_cmd) 519{ 520 struct qla_tgt_cmd *cmd = container_of(se_cmd, 521 struct qla_tgt_cmd, se_cmd); 522 523 cmd->bufflen = se_cmd->data_length; 524 cmd->dma_data_direction = tcm_qla2xxx_mapping_dir(se_cmd); 525 526 cmd->sg_cnt = se_cmd->t_data_nents; 527 cmd->sg = se_cmd->t_data_sg; 528 529 /* 530 * qla_target.c:qlt_rdy_to_xfer() will call pci_map_sg() to setup 531 * the SGL mappings into PCIe memory for incoming FCP WRITE data. 532 */ 533 return qlt_rdy_to_xfer(cmd); 534} 535 536static int tcm_qla2xxx_write_pending_status(struct se_cmd *se_cmd) 537{ 538 unsigned long flags; 539 /* 540 * Check for WRITE_PENDING status to determine if we need to wait for 541 * CTIO aborts to be posted via hardware in tcm_qla2xxx_handle_data(). 542 */ 543 spin_lock_irqsave(&se_cmd->t_state_lock, flags); 544 if (se_cmd->t_state == TRANSPORT_WRITE_PENDING || 545 se_cmd->t_state == TRANSPORT_COMPLETE_QF_WP) { 546 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags); 547 wait_for_completion_timeout(&se_cmd->t_transport_stop_comp, 548 3000); 549 return 0; 550 } 551 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags); 552 553 return 0; 554} 555 556static void tcm_qla2xxx_set_default_node_attrs(struct se_node_acl *nacl) 557{ 558 return; 559} 560 561static u32 tcm_qla2xxx_get_task_tag(struct se_cmd *se_cmd) 562{ 563 struct qla_tgt_cmd *cmd = container_of(se_cmd, 564 struct qla_tgt_cmd, se_cmd); 565 566 return cmd->tag; 567} 568 569static int tcm_qla2xxx_get_cmd_state(struct se_cmd *se_cmd) 570{ 571 return 0; 572} 573 574/* 575 * Called from process context in qla_target.c:qlt_do_work() code 576 */ 577static int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd, 578 unsigned char *cdb, uint32_t data_length, int fcp_task_attr, 579 int data_dir, int bidi) 580{ 581 struct se_cmd *se_cmd = &cmd->se_cmd; 582 struct se_session *se_sess; 583 struct qla_tgt_sess *sess; 584 int flags = TARGET_SCF_ACK_KREF; 585 586 if (bidi) 587 flags |= TARGET_SCF_BIDI_OP; 588 589 sess = cmd->sess; 590 if (!sess) { 591 pr_err("Unable to locate struct qla_tgt_sess from qla_tgt_cmd\n"); 592 return -EINVAL; 593 } 594 595 se_sess = sess->se_sess; 596 if (!se_sess) { 597 pr_err("Unable to locate active struct se_session\n"); 598 return -EINVAL; 599 } 600 601 target_submit_cmd(se_cmd, se_sess, cdb, &cmd->sense_buffer[0], 602 cmd->unpacked_lun, data_length, fcp_task_attr, 603 data_dir, flags); 604 return 0; 605} 606 607static void tcm_qla2xxx_do_rsp(struct work_struct *work) 608{ 609 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 610 /* 611 * Dispatch ->queue_status from workqueue process context 612 */ 613 transport_generic_request_failure(&cmd->se_cmd); 614} 615 616/* 617 * Called from qla_target.c:qlt_do_ctio_completion() 618 */ 619static int tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd) 620{ 621 struct se_cmd *se_cmd = &cmd->se_cmd; 622 unsigned long flags; 623 /* 624 * Ensure that the complete FCP WRITE payload has been received. 625 * Otherwise return an exception via CHECK_CONDITION status. 626 */ 627 if (!cmd->write_data_transferred) { 628 /* 629 * Check if se_cmd has already been aborted via LUN_RESET, and 630 * waiting upon completion in tcm_qla2xxx_write_pending_status() 631 */ 632 spin_lock_irqsave(&se_cmd->t_state_lock, flags); 633 if (se_cmd->transport_state & CMD_T_ABORTED) { 634 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags); 635 complete(&se_cmd->t_transport_stop_comp); 636 return 0; 637 } 638 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags); 639 640 se_cmd->scsi_sense_reason = TCM_CHECK_CONDITION_ABORT_CMD; 641 INIT_WORK(&cmd->work, tcm_qla2xxx_do_rsp); 642 queue_work(tcm_qla2xxx_free_wq, &cmd->work); 643 return 0; 644 } 645 /* 646 * We now tell TCM to queue this WRITE CDB with TRANSPORT_PROCESS_WRITE 647 * status to the backstore processing thread. 648 */ 649 return transport_generic_handle_data(&cmd->se_cmd); 650} 651 652/* 653 * Called from qla_target.c:qlt_issue_task_mgmt() 654 */ 655int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *mcmd, uint32_t lun, 656 uint8_t tmr_func, uint32_t tag) 657{ 658 struct qla_tgt_sess *sess = mcmd->sess; 659 struct se_cmd *se_cmd = &mcmd->se_cmd; 660 661 return target_submit_tmr(se_cmd, sess->se_sess, NULL, lun, mcmd, 662 tmr_func, GFP_ATOMIC, tag, TARGET_SCF_ACK_KREF); 663} 664 665static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd) 666{ 667 struct qla_tgt_cmd *cmd = container_of(se_cmd, 668 struct qla_tgt_cmd, se_cmd); 669 670 cmd->bufflen = se_cmd->data_length; 671 cmd->dma_data_direction = tcm_qla2xxx_mapping_dir(se_cmd); 672 cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED); 673 674 cmd->sg_cnt = se_cmd->t_data_nents; 675 cmd->sg = se_cmd->t_data_sg; 676 cmd->offset = 0; 677 678 /* 679 * Now queue completed DATA_IN the qla2xxx LLD and response ring 680 */ 681 return qlt_xmit_response(cmd, QLA_TGT_XMIT_DATA|QLA_TGT_XMIT_STATUS, 682 se_cmd->scsi_status); 683} 684 685static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd) 686{ 687 struct qla_tgt_cmd *cmd = container_of(se_cmd, 688 struct qla_tgt_cmd, se_cmd); 689 int xmit_type = QLA_TGT_XMIT_STATUS; 690 691 cmd->bufflen = se_cmd->data_length; 692 cmd->sg = NULL; 693 cmd->sg_cnt = 0; 694 cmd->offset = 0; 695 cmd->dma_data_direction = tcm_qla2xxx_mapping_dir(se_cmd); 696 cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED); 697 698 if (se_cmd->data_direction == DMA_FROM_DEVICE) { 699 /* 700 * For FCP_READ with CHECK_CONDITION status, clear cmd->bufflen 701 * for qla_tgt_xmit_response LLD code 702 */ 703 se_cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT; 704 se_cmd->residual_count = se_cmd->data_length; 705 706 cmd->bufflen = 0; 707 } 708 /* 709 * Now queue status response to qla2xxx LLD code and response ring 710 */ 711 return qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status); 712} 713 714static int tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd) 715{ 716 struct se_tmr_req *se_tmr = se_cmd->se_tmr_req; 717 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd, 718 struct qla_tgt_mgmt_cmd, se_cmd); 719 720 pr_debug("queue_tm_rsp: mcmd: %p func: 0x%02x response: 0x%02x\n", 721 mcmd, se_tmr->function, se_tmr->response); 722 /* 723 * Do translation between TCM TM response codes and 724 * QLA2xxx FC TM response codes. 725 */ 726 switch (se_tmr->response) { 727 case TMR_FUNCTION_COMPLETE: 728 mcmd->fc_tm_rsp = FC_TM_SUCCESS; 729 break; 730 case TMR_TASK_DOES_NOT_EXIST: 731 mcmd->fc_tm_rsp = FC_TM_BAD_CMD; 732 break; 733 case TMR_FUNCTION_REJECTED: 734 mcmd->fc_tm_rsp = FC_TM_REJECT; 735 break; 736 case TMR_LUN_DOES_NOT_EXIST: 737 default: 738 mcmd->fc_tm_rsp = FC_TM_FAILED; 739 break; 740 } 741 /* 742 * Queue the TM response to QLA2xxx LLD to build a 743 * CTIO response packet. 744 */ 745 qlt_xmit_tm_rsp(mcmd); 746 747 return 0; 748} 749 750static u16 tcm_qla2xxx_get_fabric_sense_len(void) 751{ 752 return 0; 753} 754 755static u16 tcm_qla2xxx_set_fabric_sense_len(struct se_cmd *se_cmd, 756 u32 sense_length) 757{ 758 return 0; 759} 760 761/* Local pointer to allocated TCM configfs fabric module */ 762struct target_fabric_configfs *tcm_qla2xxx_fabric_configfs; 763struct target_fabric_configfs *tcm_qla2xxx_npiv_fabric_configfs; 764 765static int tcm_qla2xxx_setup_nacl_from_rport( 766 struct se_portal_group *se_tpg, 767 struct se_node_acl *se_nacl, 768 struct tcm_qla2xxx_lport *lport, 769 struct tcm_qla2xxx_nacl *nacl, 770 u64 rport_wwnn) 771{ 772 struct scsi_qla_host *vha = lport->qla_vha; 773 struct Scsi_Host *sh = vha->host; 774 struct fc_host_attrs *fc_host = shost_to_fc_host(sh); 775 struct fc_rport *rport; 776 unsigned long flags; 777 void *node; 778 int rc; 779 780 /* 781 * Scan the existing rports, and create a session for the 782 * explict NodeACL is an matching rport->node_name already 783 * exists. 784 */ 785 spin_lock_irqsave(sh->host_lock, flags); 786 list_for_each_entry(rport, &fc_host->rports, peers) { 787 if (rport_wwnn != rport->node_name) 788 continue; 789 790 pr_debug("Located existing rport_wwpn and rport->node_name: 0x%016LX, port_id: 0x%04x\n", 791 rport->node_name, rport->port_id); 792 nacl->nport_id = rport->port_id; 793 794 spin_unlock_irqrestore(sh->host_lock, flags); 795 796 spin_lock_irqsave(&vha->hw->hardware_lock, flags); 797 node = btree_lookup32(&lport->lport_fcport_map, rport->port_id); 798 if (node) { 799 rc = btree_update32(&lport->lport_fcport_map, 800 rport->port_id, se_nacl); 801 } else { 802 rc = btree_insert32(&lport->lport_fcport_map, 803 rport->port_id, se_nacl, 804 GFP_ATOMIC); 805 } 806 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags); 807 808 if (rc) { 809 pr_err("Unable to insert se_nacl into fcport_map"); 810 WARN_ON(rc > 0); 811 return rc; 812 } 813 814 pr_debug("Inserted into fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%08x\n", 815 se_nacl, rport_wwnn, nacl->nport_id); 816 817 return 1; 818 } 819 spin_unlock_irqrestore(sh->host_lock, flags); 820 821 return 0; 822} 823 824/* 825 * Expected to be called with struct qla_hw_data->hardware_lock held 826 */ 827static void tcm_qla2xxx_clear_nacl_from_fcport_map(struct qla_tgt_sess *sess) 828{ 829 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl; 830 struct se_portal_group *se_tpg = se_nacl->se_tpg; 831 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn; 832 struct tcm_qla2xxx_lport *lport = container_of(se_wwn, 833 struct tcm_qla2xxx_lport, lport_wwn); 834 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl, 835 struct tcm_qla2xxx_nacl, se_node_acl); 836 void *node; 837 838 pr_debug("fc_rport domain: port_id 0x%06x\n", nacl->nport_id); 839 840 node = btree_remove32(&lport->lport_fcport_map, nacl->nport_id); 841 WARN_ON(node && (node != se_nacl)); 842 843 pr_debug("Removed from fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%06x\n", 844 se_nacl, nacl->nport_wwnn, nacl->nport_id); 845} 846 847static void tcm_qla2xxx_put_sess(struct qla_tgt_sess *sess) 848{ 849 target_put_session(sess->se_sess); 850} 851 852static void tcm_qla2xxx_shutdown_sess(struct qla_tgt_sess *sess) 853{ 854 tcm_qla2xxx_shutdown_session(sess->se_sess); 855} 856 857static struct se_node_acl *tcm_qla2xxx_make_nodeacl( 858 struct se_portal_group *se_tpg, 859 struct config_group *group, 860 const char *name) 861{ 862 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn; 863 struct tcm_qla2xxx_lport *lport = container_of(se_wwn, 864 struct tcm_qla2xxx_lport, lport_wwn); 865 struct se_node_acl *se_nacl, *se_nacl_new; 866 struct tcm_qla2xxx_nacl *nacl; 867 u64 wwnn; 868 u32 qla2xxx_nexus_depth; 869 int rc; 870 871 if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0) 872 return ERR_PTR(-EINVAL); 873 874 se_nacl_new = tcm_qla2xxx_alloc_fabric_acl(se_tpg); 875 if (!se_nacl_new) 876 return ERR_PTR(-ENOMEM); 877/* #warning FIXME: Hardcoded qla2xxx_nexus depth in tcm_qla2xxx_make_nodeacl */ 878 qla2xxx_nexus_depth = 1; 879 880 /* 881 * se_nacl_new may be released by core_tpg_add_initiator_node_acl() 882 * when converting a NodeACL from demo mode -> explict 883 */ 884 se_nacl = core_tpg_add_initiator_node_acl(se_tpg, se_nacl_new, 885 name, qla2xxx_nexus_depth); 886 if (IS_ERR(se_nacl)) { 887 tcm_qla2xxx_release_fabric_acl(se_tpg, se_nacl_new); 888 return se_nacl; 889 } 890 /* 891 * Locate our struct tcm_qla2xxx_nacl and set the FC Nport WWPN 892 */ 893 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 894 nacl->nport_wwnn = wwnn; 895 tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn); 896 /* 897 * Setup a se_nacl handle based on an a matching struct fc_rport setup 898 * via drivers/scsi/qla2xxx/qla_init.c:qla2x00_reg_remote_port() 899 */ 900 rc = tcm_qla2xxx_setup_nacl_from_rport(se_tpg, se_nacl, lport, 901 nacl, wwnn); 902 if (rc < 0) { 903 tcm_qla2xxx_release_fabric_acl(se_tpg, se_nacl_new); 904 return ERR_PTR(rc); 905 } 906 907 return se_nacl; 908} 909 910static void tcm_qla2xxx_drop_nodeacl(struct se_node_acl *se_acl) 911{ 912 struct se_portal_group *se_tpg = se_acl->se_tpg; 913 struct tcm_qla2xxx_nacl *nacl = container_of(se_acl, 914 struct tcm_qla2xxx_nacl, se_node_acl); 915 916 core_tpg_del_initiator_node_acl(se_tpg, se_acl, 1); 917 kfree(nacl); 918} 919 920/* Start items for tcm_qla2xxx_tpg_attrib_cit */ 921 922#define DEF_QLA_TPG_ATTRIB(name) \ 923 \ 924static ssize_t tcm_qla2xxx_tpg_attrib_show_##name( \ 925 struct se_portal_group *se_tpg, \ 926 char *page) \ 927{ \ 928 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \ 929 struct tcm_qla2xxx_tpg, se_tpg); \ 930 \ 931 return sprintf(page, "%u\n", QLA_TPG_ATTRIB(tpg)->name); \ 932} \ 933 \ 934static ssize_t tcm_qla2xxx_tpg_attrib_store_##name( \ 935 struct se_portal_group *se_tpg, \ 936 const char *page, \ 937 size_t count) \ 938{ \ 939 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \ 940 struct tcm_qla2xxx_tpg, se_tpg); \ 941 unsigned long val; \ 942 int ret; \ 943 \ 944 ret = kstrtoul(page, 0, &val); \ 945 if (ret < 0) { \ 946 pr_err("kstrtoul() failed with" \ 947 " ret: %d\n", ret); \ 948 return -EINVAL; \ 949 } \ 950 ret = tcm_qla2xxx_set_attrib_##name(tpg, val); \ 951 \ 952 return (!ret) ? count : -EINVAL; \ 953} 954 955#define DEF_QLA_TPG_ATTR_BOOL(_name) \ 956 \ 957static int tcm_qla2xxx_set_attrib_##_name( \ 958 struct tcm_qla2xxx_tpg *tpg, \ 959 unsigned long val) \ 960{ \ 961 struct tcm_qla2xxx_tpg_attrib *a = &tpg->tpg_attrib; \ 962 \ 963 if ((val != 0) && (val != 1)) { \ 964 pr_err("Illegal boolean value %lu\n", val); \ 965 return -EINVAL; \ 966 } \ 967 \ 968 a->_name = val; \ 969 return 0; \ 970} 971 972#define QLA_TPG_ATTR(_name, _mode) \ 973 TF_TPG_ATTRIB_ATTR(tcm_qla2xxx, _name, _mode); 974 975/* 976 * Define tcm_qla2xxx_tpg_attrib_s_generate_node_acls 977 */ 978DEF_QLA_TPG_ATTR_BOOL(generate_node_acls); 979DEF_QLA_TPG_ATTRIB(generate_node_acls); 980QLA_TPG_ATTR(generate_node_acls, S_IRUGO | S_IWUSR); 981 982/* 983 Define tcm_qla2xxx_attrib_s_cache_dynamic_acls 984 */ 985DEF_QLA_TPG_ATTR_BOOL(cache_dynamic_acls); 986DEF_QLA_TPG_ATTRIB(cache_dynamic_acls); 987QLA_TPG_ATTR(cache_dynamic_acls, S_IRUGO | S_IWUSR); 988 989/* 990 * Define tcm_qla2xxx_tpg_attrib_s_demo_mode_write_protect 991 */ 992DEF_QLA_TPG_ATTR_BOOL(demo_mode_write_protect); 993DEF_QLA_TPG_ATTRIB(demo_mode_write_protect); 994QLA_TPG_ATTR(demo_mode_write_protect, S_IRUGO | S_IWUSR); 995 996/* 997 * Define tcm_qla2xxx_tpg_attrib_s_prod_mode_write_protect 998 */ 999DEF_QLA_TPG_ATTR_BOOL(prod_mode_write_protect); 1000DEF_QLA_TPG_ATTRIB(prod_mode_write_protect); 1001QLA_TPG_ATTR(prod_mode_write_protect, S_IRUGO | S_IWUSR); 1002 1003static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = { 1004 &tcm_qla2xxx_tpg_attrib_generate_node_acls.attr, 1005 &tcm_qla2xxx_tpg_attrib_cache_dynamic_acls.attr, 1006 &tcm_qla2xxx_tpg_attrib_demo_mode_write_protect.attr, 1007 &tcm_qla2xxx_tpg_attrib_prod_mode_write_protect.attr, 1008 NULL, 1009}; 1010 1011/* End items for tcm_qla2xxx_tpg_attrib_cit */ 1012 1013static ssize_t tcm_qla2xxx_tpg_show_enable( 1014 struct se_portal_group *se_tpg, 1015 char *page) 1016{ 1017 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1018 struct tcm_qla2xxx_tpg, se_tpg); 1019 1020 return snprintf(page, PAGE_SIZE, "%d\n", 1021 atomic_read(&tpg->lport_tpg_enabled)); 1022} 1023 1024static ssize_t tcm_qla2xxx_tpg_store_enable( 1025 struct se_portal_group *se_tpg, 1026 const char *page, 1027 size_t count) 1028{ 1029 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn; 1030 struct tcm_qla2xxx_lport *lport = container_of(se_wwn, 1031 struct tcm_qla2xxx_lport, lport_wwn); 1032 struct scsi_qla_host *vha = lport->qla_vha; 1033 struct qla_hw_data *ha = vha->hw; 1034 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1035 struct tcm_qla2xxx_tpg, se_tpg); 1036 unsigned long op; 1037 int rc; 1038 1039 rc = kstrtoul(page, 0, &op); 1040 if (rc < 0) { 1041 pr_err("kstrtoul() returned %d\n", rc); 1042 return -EINVAL; 1043 } 1044 if ((op != 1) && (op != 0)) { 1045 pr_err("Illegal value for tpg_enable: %lu\n", op); 1046 return -EINVAL; 1047 } 1048 1049 if (op) { 1050 atomic_set(&tpg->lport_tpg_enabled, 1); 1051 qlt_enable_vha(vha); 1052 } else { 1053 if (!ha->tgt.qla_tgt) { 1054 pr_err("truct qla_hw_data *ha->tgt.qla_tgt is NULL\n"); 1055 return -ENODEV; 1056 } 1057 atomic_set(&tpg->lport_tpg_enabled, 0); 1058 qlt_stop_phase1(ha->tgt.qla_tgt); 1059 } 1060 1061 return count; 1062} 1063 1064TF_TPG_BASE_ATTR(tcm_qla2xxx, enable, S_IRUGO | S_IWUSR); 1065 1066static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = { 1067 &tcm_qla2xxx_tpg_enable.attr, 1068 NULL, 1069}; 1070 1071static struct se_portal_group *tcm_qla2xxx_make_tpg( 1072 struct se_wwn *wwn, 1073 struct config_group *group, 1074 const char *name) 1075{ 1076 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1077 struct tcm_qla2xxx_lport, lport_wwn); 1078 struct tcm_qla2xxx_tpg *tpg; 1079 unsigned long tpgt; 1080 int ret; 1081 1082 if (strstr(name, "tpgt_") != name) 1083 return ERR_PTR(-EINVAL); 1084 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX) 1085 return ERR_PTR(-EINVAL); 1086 1087 if (!lport->qla_npiv_vp && (tpgt != 1)) { 1088 pr_err("In non NPIV mode, a single TPG=1 is used for HW port mappings\n"); 1089 return ERR_PTR(-ENOSYS); 1090 } 1091 1092 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL); 1093 if (!tpg) { 1094 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n"); 1095 return ERR_PTR(-ENOMEM); 1096 } 1097 tpg->lport = lport; 1098 tpg->lport_tpgt = tpgt; 1099 /* 1100 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic 1101 * NodeACLs 1102 */ 1103 QLA_TPG_ATTRIB(tpg)->generate_node_acls = 1; 1104 QLA_TPG_ATTRIB(tpg)->demo_mode_write_protect = 1; 1105 QLA_TPG_ATTRIB(tpg)->cache_dynamic_acls = 1; 1106 1107 ret = core_tpg_register(&tcm_qla2xxx_fabric_configfs->tf_ops, wwn, 1108 &tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL); 1109 if (ret < 0) { 1110 kfree(tpg); 1111 return NULL; 1112 } 1113 /* 1114 * Setup local TPG=1 pointer for non NPIV mode. 1115 */ 1116 if (lport->qla_npiv_vp == NULL) 1117 lport->tpg_1 = tpg; 1118 1119 return &tpg->se_tpg; 1120} 1121 1122static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg) 1123{ 1124 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1125 struct tcm_qla2xxx_tpg, se_tpg); 1126 struct tcm_qla2xxx_lport *lport = tpg->lport; 1127 struct scsi_qla_host *vha = lport->qla_vha; 1128 struct qla_hw_data *ha = vha->hw; 1129 /* 1130 * Call into qla2x_target.c LLD logic to shutdown the active 1131 * FC Nexuses and disable target mode operation for this qla_hw_data 1132 */ 1133 if (ha->tgt.qla_tgt && !ha->tgt.qla_tgt->tgt_stop) 1134 qlt_stop_phase1(ha->tgt.qla_tgt); 1135 1136 core_tpg_deregister(se_tpg); 1137 /* 1138 * Clear local TPG=1 pointer for non NPIV mode. 1139 */ 1140 if (lport->qla_npiv_vp == NULL) 1141 lport->tpg_1 = NULL; 1142 1143 kfree(tpg); 1144} 1145 1146static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg( 1147 struct se_wwn *wwn, 1148 struct config_group *group, 1149 const char *name) 1150{ 1151 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1152 struct tcm_qla2xxx_lport, lport_wwn); 1153 struct tcm_qla2xxx_tpg *tpg; 1154 unsigned long tpgt; 1155 int ret; 1156 1157 if (strstr(name, "tpgt_") != name) 1158 return ERR_PTR(-EINVAL); 1159 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX) 1160 return ERR_PTR(-EINVAL); 1161 1162 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL); 1163 if (!tpg) { 1164 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n"); 1165 return ERR_PTR(-ENOMEM); 1166 } 1167 tpg->lport = lport; 1168 tpg->lport_tpgt = tpgt; 1169 1170 ret = core_tpg_register(&tcm_qla2xxx_npiv_fabric_configfs->tf_ops, wwn, 1171 &tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL); 1172 if (ret < 0) { 1173 kfree(tpg); 1174 return NULL; 1175 } 1176 return &tpg->se_tpg; 1177} 1178 1179/* 1180 * Expected to be called with struct qla_hw_data->hardware_lock held 1181 */ 1182static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_s_id( 1183 scsi_qla_host_t *vha, 1184 const uint8_t *s_id) 1185{ 1186 struct qla_hw_data *ha = vha->hw; 1187 struct tcm_qla2xxx_lport *lport; 1188 struct se_node_acl *se_nacl; 1189 struct tcm_qla2xxx_nacl *nacl; 1190 u32 key; 1191 1192 lport = ha->tgt.target_lport_ptr; 1193 if (!lport) { 1194 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1195 dump_stack(); 1196 return NULL; 1197 } 1198 1199 key = (((unsigned long)s_id[0] << 16) | 1200 ((unsigned long)s_id[1] << 8) | 1201 (unsigned long)s_id[2]); 1202 pr_debug("find_sess_by_s_id: 0x%06x\n", key); 1203 1204 se_nacl = btree_lookup32(&lport->lport_fcport_map, key); 1205 if (!se_nacl) { 1206 pr_debug("Unable to locate s_id: 0x%06x\n", key); 1207 return NULL; 1208 } 1209 pr_debug("find_sess_by_s_id: located se_nacl: %p, initiatorname: %s\n", 1210 se_nacl, se_nacl->initiatorname); 1211 1212 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1213 if (!nacl->qla_tgt_sess) { 1214 pr_err("Unable to locate struct qla_tgt_sess\n"); 1215 return NULL; 1216 } 1217 1218 return nacl->qla_tgt_sess; 1219} 1220 1221/* 1222 * Expected to be called with struct qla_hw_data->hardware_lock held 1223 */ 1224static void tcm_qla2xxx_set_sess_by_s_id( 1225 struct tcm_qla2xxx_lport *lport, 1226 struct se_node_acl *new_se_nacl, 1227 struct tcm_qla2xxx_nacl *nacl, 1228 struct se_session *se_sess, 1229 struct qla_tgt_sess *qla_tgt_sess, 1230 uint8_t *s_id) 1231{ 1232 u32 key; 1233 void *slot; 1234 int rc; 1235 1236 key = (((unsigned long)s_id[0] << 16) | 1237 ((unsigned long)s_id[1] << 8) | 1238 (unsigned long)s_id[2]); 1239 pr_debug("set_sess_by_s_id: %06x\n", key); 1240 1241 slot = btree_lookup32(&lport->lport_fcport_map, key); 1242 if (!slot) { 1243 if (new_se_nacl) { 1244 pr_debug("Setting up new fc_port entry to new_se_nacl\n"); 1245 nacl->nport_id = key; 1246 rc = btree_insert32(&lport->lport_fcport_map, key, 1247 new_se_nacl, GFP_ATOMIC); 1248 if (rc) 1249 printk(KERN_ERR "Unable to insert s_id into fcport_map: %06x\n", 1250 (int)key); 1251 } else { 1252 pr_debug("Wiping nonexisting fc_port entry\n"); 1253 } 1254 1255 qla_tgt_sess->se_sess = se_sess; 1256 nacl->qla_tgt_sess = qla_tgt_sess; 1257 return; 1258 } 1259 1260 if (nacl->qla_tgt_sess) { 1261 if (new_se_nacl == NULL) { 1262 pr_debug("Clearing existing nacl->qla_tgt_sess and fc_port entry\n"); 1263 btree_remove32(&lport->lport_fcport_map, key); 1264 nacl->qla_tgt_sess = NULL; 1265 return; 1266 } 1267 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_port entry\n"); 1268 btree_update32(&lport->lport_fcport_map, key, new_se_nacl); 1269 qla_tgt_sess->se_sess = se_sess; 1270 nacl->qla_tgt_sess = qla_tgt_sess; 1271 return; 1272 } 1273 1274 if (new_se_nacl == NULL) { 1275 pr_debug("Clearing existing fc_port entry\n"); 1276 btree_remove32(&lport->lport_fcport_map, key); 1277 return; 1278 } 1279 1280 pr_debug("Replacing existing fc_port entry w/o active nacl->qla_tgt_sess\n"); 1281 btree_update32(&lport->lport_fcport_map, key, new_se_nacl); 1282 qla_tgt_sess->se_sess = se_sess; 1283 nacl->qla_tgt_sess = qla_tgt_sess; 1284 1285 pr_debug("Setup nacl->qla_tgt_sess %p by s_id for se_nacl: %p, initiatorname: %s\n", 1286 nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname); 1287} 1288 1289/* 1290 * Expected to be called with struct qla_hw_data->hardware_lock held 1291 */ 1292static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_loop_id( 1293 scsi_qla_host_t *vha, 1294 const uint16_t loop_id) 1295{ 1296 struct qla_hw_data *ha = vha->hw; 1297 struct tcm_qla2xxx_lport *lport; 1298 struct se_node_acl *se_nacl; 1299 struct tcm_qla2xxx_nacl *nacl; 1300 struct tcm_qla2xxx_fc_loopid *fc_loopid; 1301 1302 lport = ha->tgt.target_lport_ptr; 1303 if (!lport) { 1304 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1305 dump_stack(); 1306 return NULL; 1307 } 1308 1309 pr_debug("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id); 1310 1311 fc_loopid = lport->lport_loopid_map + loop_id; 1312 se_nacl = fc_loopid->se_nacl; 1313 if (!se_nacl) { 1314 pr_debug("Unable to locate se_nacl by loop_id: 0x%04x\n", 1315 loop_id); 1316 return NULL; 1317 } 1318 1319 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1320 1321 if (!nacl->qla_tgt_sess) { 1322 pr_err("Unable to locate struct qla_tgt_sess\n"); 1323 return NULL; 1324 } 1325 1326 return nacl->qla_tgt_sess; 1327} 1328 1329/* 1330 * Expected to be called with struct qla_hw_data->hardware_lock held 1331 */ 1332static void tcm_qla2xxx_set_sess_by_loop_id( 1333 struct tcm_qla2xxx_lport *lport, 1334 struct se_node_acl *new_se_nacl, 1335 struct tcm_qla2xxx_nacl *nacl, 1336 struct se_session *se_sess, 1337 struct qla_tgt_sess *qla_tgt_sess, 1338 uint16_t loop_id) 1339{ 1340 struct se_node_acl *saved_nacl; 1341 struct tcm_qla2xxx_fc_loopid *fc_loopid; 1342 1343 pr_debug("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id); 1344 1345 fc_loopid = &((struct tcm_qla2xxx_fc_loopid *) 1346 lport->lport_loopid_map)[loop_id]; 1347 1348 saved_nacl = fc_loopid->se_nacl; 1349 if (!saved_nacl) { 1350 pr_debug("Setting up new fc_loopid->se_nacl to new_se_nacl\n"); 1351 fc_loopid->se_nacl = new_se_nacl; 1352 if (qla_tgt_sess->se_sess != se_sess) 1353 qla_tgt_sess->se_sess = se_sess; 1354 if (nacl->qla_tgt_sess != qla_tgt_sess) 1355 nacl->qla_tgt_sess = qla_tgt_sess; 1356 return; 1357 } 1358 1359 if (nacl->qla_tgt_sess) { 1360 if (new_se_nacl == NULL) { 1361 pr_debug("Clearing nacl->qla_tgt_sess and fc_loopid->se_nacl\n"); 1362 fc_loopid->se_nacl = NULL; 1363 nacl->qla_tgt_sess = NULL; 1364 return; 1365 } 1366 1367 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_loopid->se_nacl\n"); 1368 fc_loopid->se_nacl = new_se_nacl; 1369 if (qla_tgt_sess->se_sess != se_sess) 1370 qla_tgt_sess->se_sess = se_sess; 1371 if (nacl->qla_tgt_sess != qla_tgt_sess) 1372 nacl->qla_tgt_sess = qla_tgt_sess; 1373 return; 1374 } 1375 1376 if (new_se_nacl == NULL) { 1377 pr_debug("Clearing fc_loopid->se_nacl\n"); 1378 fc_loopid->se_nacl = NULL; 1379 return; 1380 } 1381 1382 pr_debug("Replacing existing fc_loopid->se_nacl w/o active nacl->qla_tgt_sess\n"); 1383 fc_loopid->se_nacl = new_se_nacl; 1384 if (qla_tgt_sess->se_sess != se_sess) 1385 qla_tgt_sess->se_sess = se_sess; 1386 if (nacl->qla_tgt_sess != qla_tgt_sess) 1387 nacl->qla_tgt_sess = qla_tgt_sess; 1388 1389 pr_debug("Setup nacl->qla_tgt_sess %p by loop_id for se_nacl: %p, initiatorname: %s\n", 1390 nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname); 1391} 1392 1393static void tcm_qla2xxx_free_session(struct qla_tgt_sess *sess) 1394{ 1395 struct qla_tgt *tgt = sess->tgt; 1396 struct qla_hw_data *ha = tgt->ha; 1397 struct se_session *se_sess; 1398 struct se_node_acl *se_nacl; 1399 struct tcm_qla2xxx_lport *lport; 1400 struct tcm_qla2xxx_nacl *nacl; 1401 unsigned char be_sid[3]; 1402 unsigned long flags; 1403 1404 BUG_ON(in_interrupt()); 1405 1406 se_sess = sess->se_sess; 1407 if (!se_sess) { 1408 pr_err("struct qla_tgt_sess->se_sess is NULL\n"); 1409 dump_stack(); 1410 return; 1411 } 1412 se_nacl = se_sess->se_node_acl; 1413 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1414 1415 lport = ha->tgt.target_lport_ptr; 1416 if (!lport) { 1417 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1418 dump_stack(); 1419 return; 1420 } 1421 target_wait_for_sess_cmds(se_sess, 0); 1422 /* 1423 * And now clear the se_nacl and session pointers from our HW lport 1424 * mappings for fabric S_ID and LOOP_ID. 1425 */ 1426 memset(&be_sid, 0, 3); 1427 be_sid[0] = sess->s_id.b.domain; 1428 be_sid[1] = sess->s_id.b.area; 1429 be_sid[2] = sess->s_id.b.al_pa; 1430 1431 spin_lock_irqsave(&ha->hardware_lock, flags); 1432 tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess, 1433 sess, be_sid); 1434 tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess, 1435 sess, sess->loop_id); 1436 spin_unlock_irqrestore(&ha->hardware_lock, flags); 1437 1438 transport_deregister_session_configfs(sess->se_sess); 1439 transport_deregister_session(sess->se_sess); 1440} 1441 1442/* 1443 * Called via qlt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl() 1444 * to locate struct se_node_acl 1445 */ 1446static int tcm_qla2xxx_check_initiator_node_acl( 1447 scsi_qla_host_t *vha, 1448 unsigned char *fc_wwpn, 1449 void *qla_tgt_sess, 1450 uint8_t *s_id, 1451 uint16_t loop_id) 1452{ 1453 struct qla_hw_data *ha = vha->hw; 1454 struct tcm_qla2xxx_lport *lport; 1455 struct tcm_qla2xxx_tpg *tpg; 1456 struct tcm_qla2xxx_nacl *nacl; 1457 struct se_portal_group *se_tpg; 1458 struct se_node_acl *se_nacl; 1459 struct se_session *se_sess; 1460 struct qla_tgt_sess *sess = qla_tgt_sess; 1461 unsigned char port_name[36]; 1462 unsigned long flags; 1463 1464 lport = ha->tgt.target_lport_ptr; 1465 if (!lport) { 1466 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1467 dump_stack(); 1468 return -EINVAL; 1469 } 1470 /* 1471 * Locate the TPG=1 reference.. 1472 */ 1473 tpg = lport->tpg_1; 1474 if (!tpg) { 1475 pr_err("Unable to lcoate struct tcm_qla2xxx_lport->tpg_1\n"); 1476 return -EINVAL; 1477 } 1478 se_tpg = &tpg->se_tpg; 1479 1480 se_sess = transport_init_session(); 1481 if (IS_ERR(se_sess)) { 1482 pr_err("Unable to initialize struct se_session\n"); 1483 return PTR_ERR(se_sess); 1484 } 1485 /* 1486 * Format the FCP Initiator port_name into colon seperated values to 1487 * match the format by tcm_qla2xxx explict ConfigFS NodeACLs. 1488 */ 1489 memset(&port_name, 0, 36); 1490 snprintf(port_name, 36, "%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x", 1491 fc_wwpn[0], fc_wwpn[1], fc_wwpn[2], fc_wwpn[3], fc_wwpn[4], 1492 fc_wwpn[5], fc_wwpn[6], fc_wwpn[7]); 1493 /* 1494 * Locate our struct se_node_acl either from an explict NodeACL created 1495 * via ConfigFS, or via running in TPG demo mode. 1496 */ 1497 se_sess->se_node_acl = core_tpg_check_initiator_node_acl(se_tpg, 1498 port_name); 1499 if (!se_sess->se_node_acl) { 1500 transport_free_session(se_sess); 1501 return -EINVAL; 1502 } 1503 se_nacl = se_sess->se_node_acl; 1504 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1505 /* 1506 * And now setup the new se_nacl and session pointers into our HW lport 1507 * mappings for fabric S_ID and LOOP_ID. 1508 */ 1509 spin_lock_irqsave(&ha->hardware_lock, flags); 1510 tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl, se_sess, 1511 qla_tgt_sess, s_id); 1512 tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl, se_sess, 1513 qla_tgt_sess, loop_id); 1514 spin_unlock_irqrestore(&ha->hardware_lock, flags); 1515 /* 1516 * Finally register the new FC Nexus with TCM 1517 */ 1518 __transport_register_session(se_nacl->se_tpg, se_nacl, se_sess, sess); 1519 1520 return 0; 1521} 1522 1523/* 1524 * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path. 1525 */ 1526static struct qla_tgt_func_tmpl tcm_qla2xxx_template = { 1527 .handle_cmd = tcm_qla2xxx_handle_cmd, 1528 .handle_data = tcm_qla2xxx_handle_data, 1529 .handle_tmr = tcm_qla2xxx_handle_tmr, 1530 .free_cmd = tcm_qla2xxx_free_cmd, 1531 .free_mcmd = tcm_qla2xxx_free_mcmd, 1532 .free_session = tcm_qla2xxx_free_session, 1533 .check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl, 1534 .find_sess_by_s_id = tcm_qla2xxx_find_sess_by_s_id, 1535 .find_sess_by_loop_id = tcm_qla2xxx_find_sess_by_loop_id, 1536 .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map, 1537 .put_sess = tcm_qla2xxx_put_sess, 1538 .shutdown_sess = tcm_qla2xxx_shutdown_sess, 1539}; 1540 1541static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport) 1542{ 1543 int rc; 1544 1545 rc = btree_init32(&lport->lport_fcport_map); 1546 if (rc) { 1547 pr_err("Unable to initialize lport->lport_fcport_map btree\n"); 1548 return rc; 1549 } 1550 1551 lport->lport_loopid_map = vmalloc(sizeof(struct tcm_qla2xxx_fc_loopid) * 1552 65536); 1553 if (!lport->lport_loopid_map) { 1554 pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n", 1555 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536); 1556 btree_destroy32(&lport->lport_fcport_map); 1557 return -ENOMEM; 1558 } 1559 memset(lport->lport_loopid_map, 0, sizeof(struct tcm_qla2xxx_fc_loopid) 1560 * 65536); 1561 pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n", 1562 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536); 1563 return 0; 1564} 1565 1566static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha) 1567{ 1568 struct qla_hw_data *ha = vha->hw; 1569 struct tcm_qla2xxx_lport *lport; 1570 /* 1571 * Setup local pointer to vha, NPIV VP pointer (if present) and 1572 * vha->tcm_lport pointer 1573 */ 1574 lport = (struct tcm_qla2xxx_lport *)ha->tgt.target_lport_ptr; 1575 lport->qla_vha = vha; 1576 1577 return 0; 1578} 1579 1580static struct se_wwn *tcm_qla2xxx_make_lport( 1581 struct target_fabric_configfs *tf, 1582 struct config_group *group, 1583 const char *name) 1584{ 1585 struct tcm_qla2xxx_lport *lport; 1586 u64 wwpn; 1587 int ret = -ENODEV; 1588 1589 if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0) 1590 return ERR_PTR(-EINVAL); 1591 1592 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL); 1593 if (!lport) { 1594 pr_err("Unable to allocate struct tcm_qla2xxx_lport\n"); 1595 return ERR_PTR(-ENOMEM); 1596 } 1597 lport->lport_wwpn = wwpn; 1598 tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN, 1599 wwpn); 1600 1601 ret = tcm_qla2xxx_init_lport(lport); 1602 if (ret != 0) 1603 goto out; 1604 1605 ret = qlt_lport_register(&tcm_qla2xxx_template, wwpn, 1606 tcm_qla2xxx_lport_register_cb, lport); 1607 if (ret != 0) 1608 goto out_lport; 1609 1610 return &lport->lport_wwn; 1611out_lport: 1612 vfree(lport->lport_loopid_map); 1613 btree_destroy32(&lport->lport_fcport_map); 1614out: 1615 kfree(lport); 1616 return ERR_PTR(ret); 1617} 1618 1619static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn) 1620{ 1621 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1622 struct tcm_qla2xxx_lport, lport_wwn); 1623 struct scsi_qla_host *vha = lport->qla_vha; 1624 struct qla_hw_data *ha = vha->hw; 1625 struct se_node_acl *node; 1626 u32 key = 0; 1627 1628 /* 1629 * Call into qla2x_target.c LLD logic to complete the 1630 * shutdown of struct qla_tgt after the call to 1631 * qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above.. 1632 */ 1633 if (ha->tgt.qla_tgt && !ha->tgt.qla_tgt->tgt_stopped) 1634 qlt_stop_phase2(ha->tgt.qla_tgt); 1635 1636 qlt_lport_deregister(vha); 1637 1638 vfree(lport->lport_loopid_map); 1639 btree_for_each_safe32(&lport->lport_fcport_map, key, node) 1640 btree_remove32(&lport->lport_fcport_map, key); 1641 btree_destroy32(&lport->lport_fcport_map); 1642 kfree(lport); 1643} 1644 1645static struct se_wwn *tcm_qla2xxx_npiv_make_lport( 1646 struct target_fabric_configfs *tf, 1647 struct config_group *group, 1648 const char *name) 1649{ 1650 struct tcm_qla2xxx_lport *lport; 1651 u64 npiv_wwpn, npiv_wwnn; 1652 int ret; 1653 1654 if (tcm_qla2xxx_npiv_parse_wwn(name, strlen(name)+1, 1655 &npiv_wwpn, &npiv_wwnn) < 0) 1656 return ERR_PTR(-EINVAL); 1657 1658 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL); 1659 if (!lport) { 1660 pr_err("Unable to allocate struct tcm_qla2xxx_lport for NPIV\n"); 1661 return ERR_PTR(-ENOMEM); 1662 } 1663 lport->lport_npiv_wwpn = npiv_wwpn; 1664 lport->lport_npiv_wwnn = npiv_wwnn; 1665 tcm_qla2xxx_npiv_format_wwn(&lport->lport_npiv_name[0], 1666 TCM_QLA2XXX_NAMELEN, npiv_wwpn, npiv_wwnn); 1667 1668/* FIXME: tcm_qla2xxx_npiv_make_lport */ 1669 ret = -ENOSYS; 1670 if (ret != 0) 1671 goto out; 1672 1673 return &lport->lport_wwn; 1674out: 1675 kfree(lport); 1676 return ERR_PTR(ret); 1677} 1678 1679static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn) 1680{ 1681 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1682 struct tcm_qla2xxx_lport, lport_wwn); 1683 struct scsi_qla_host *vha = lport->qla_vha; 1684 struct Scsi_Host *sh = vha->host; 1685 /* 1686 * Notify libfc that we want to release the lport->npiv_vport 1687 */ 1688 fc_vport_terminate(lport->npiv_vport); 1689 1690 scsi_host_put(sh); 1691 kfree(lport); 1692} 1693 1694 1695static ssize_t tcm_qla2xxx_wwn_show_attr_version( 1696 struct target_fabric_configfs *tf, 1697 char *page) 1698{ 1699 return sprintf(page, 1700 "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s on " 1701 UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname, 1702 utsname()->machine); 1703} 1704 1705TF_WWN_ATTR_RO(tcm_qla2xxx, version); 1706 1707static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = { 1708 &tcm_qla2xxx_wwn_version.attr, 1709 NULL, 1710}; 1711 1712static struct target_core_fabric_ops tcm_qla2xxx_ops = { 1713 .get_fabric_name = tcm_qla2xxx_get_fabric_name, 1714 .get_fabric_proto_ident = tcm_qla2xxx_get_fabric_proto_ident, 1715 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn, 1716 .tpg_get_tag = tcm_qla2xxx_get_tag, 1717 .tpg_get_default_depth = tcm_qla2xxx_get_default_depth, 1718 .tpg_get_pr_transport_id = tcm_qla2xxx_get_pr_transport_id, 1719 .tpg_get_pr_transport_id_len = tcm_qla2xxx_get_pr_transport_id_len, 1720 .tpg_parse_pr_out_transport_id = tcm_qla2xxx_parse_pr_out_transport_id, 1721 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode, 1722 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache, 1723 .tpg_check_demo_mode_write_protect = 1724 tcm_qla2xxx_check_demo_write_protect, 1725 .tpg_check_prod_mode_write_protect = 1726 tcm_qla2xxx_check_prod_write_protect, 1727 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_true, 1728 .tpg_alloc_fabric_acl = tcm_qla2xxx_alloc_fabric_acl, 1729 .tpg_release_fabric_acl = tcm_qla2xxx_release_fabric_acl, 1730 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index, 1731 .new_cmd_map = NULL, 1732 .check_stop_free = tcm_qla2xxx_check_stop_free, 1733 .release_cmd = tcm_qla2xxx_release_cmd, 1734 .shutdown_session = tcm_qla2xxx_shutdown_session, 1735 .close_session = tcm_qla2xxx_close_session, 1736 .sess_get_index = tcm_qla2xxx_sess_get_index, 1737 .sess_get_initiator_sid = NULL, 1738 .write_pending = tcm_qla2xxx_write_pending, 1739 .write_pending_status = tcm_qla2xxx_write_pending_status, 1740 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs, 1741 .get_task_tag = tcm_qla2xxx_get_task_tag, 1742 .get_cmd_state = tcm_qla2xxx_get_cmd_state, 1743 .queue_data_in = tcm_qla2xxx_queue_data_in, 1744 .queue_status = tcm_qla2xxx_queue_status, 1745 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp, 1746 .get_fabric_sense_len = tcm_qla2xxx_get_fabric_sense_len, 1747 .set_fabric_sense_len = tcm_qla2xxx_set_fabric_sense_len, 1748 /* 1749 * Setup function pointers for generic logic in 1750 * target_core_fabric_configfs.c 1751 */ 1752 .fabric_make_wwn = tcm_qla2xxx_make_lport, 1753 .fabric_drop_wwn = tcm_qla2xxx_drop_lport, 1754 .fabric_make_tpg = tcm_qla2xxx_make_tpg, 1755 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg, 1756 .fabric_post_link = NULL, 1757 .fabric_pre_unlink = NULL, 1758 .fabric_make_np = NULL, 1759 .fabric_drop_np = NULL, 1760 .fabric_make_nodeacl = tcm_qla2xxx_make_nodeacl, 1761 .fabric_drop_nodeacl = tcm_qla2xxx_drop_nodeacl, 1762}; 1763 1764static struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = { 1765 .get_fabric_name = tcm_qla2xxx_npiv_get_fabric_name, 1766 .get_fabric_proto_ident = tcm_qla2xxx_get_fabric_proto_ident, 1767 .tpg_get_wwn = tcm_qla2xxx_npiv_get_fabric_wwn, 1768 .tpg_get_tag = tcm_qla2xxx_get_tag, 1769 .tpg_get_default_depth = tcm_qla2xxx_get_default_depth, 1770 .tpg_get_pr_transport_id = tcm_qla2xxx_get_pr_transport_id, 1771 .tpg_get_pr_transport_id_len = tcm_qla2xxx_get_pr_transport_id_len, 1772 .tpg_parse_pr_out_transport_id = tcm_qla2xxx_parse_pr_out_transport_id, 1773 .tpg_check_demo_mode = tcm_qla2xxx_check_false, 1774 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_true, 1775 .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_true, 1776 .tpg_check_prod_mode_write_protect = tcm_qla2xxx_check_false, 1777 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_true, 1778 .tpg_alloc_fabric_acl = tcm_qla2xxx_alloc_fabric_acl, 1779 .tpg_release_fabric_acl = tcm_qla2xxx_release_fabric_acl, 1780 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index, 1781 .release_cmd = tcm_qla2xxx_release_cmd, 1782 .shutdown_session = tcm_qla2xxx_shutdown_session, 1783 .close_session = tcm_qla2xxx_close_session, 1784 .sess_get_index = tcm_qla2xxx_sess_get_index, 1785 .sess_get_initiator_sid = NULL, 1786 .write_pending = tcm_qla2xxx_write_pending, 1787 .write_pending_status = tcm_qla2xxx_write_pending_status, 1788 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs, 1789 .get_task_tag = tcm_qla2xxx_get_task_tag, 1790 .get_cmd_state = tcm_qla2xxx_get_cmd_state, 1791 .queue_data_in = tcm_qla2xxx_queue_data_in, 1792 .queue_status = tcm_qla2xxx_queue_status, 1793 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp, 1794 .get_fabric_sense_len = tcm_qla2xxx_get_fabric_sense_len, 1795 .set_fabric_sense_len = tcm_qla2xxx_set_fabric_sense_len, 1796 /* 1797 * Setup function pointers for generic logic in 1798 * target_core_fabric_configfs.c 1799 */ 1800 .fabric_make_wwn = tcm_qla2xxx_npiv_make_lport, 1801 .fabric_drop_wwn = tcm_qla2xxx_npiv_drop_lport, 1802 .fabric_make_tpg = tcm_qla2xxx_npiv_make_tpg, 1803 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg, 1804 .fabric_post_link = NULL, 1805 .fabric_pre_unlink = NULL, 1806 .fabric_make_np = NULL, 1807 .fabric_drop_np = NULL, 1808 .fabric_make_nodeacl = tcm_qla2xxx_make_nodeacl, 1809 .fabric_drop_nodeacl = tcm_qla2xxx_drop_nodeacl, 1810}; 1811 1812static int tcm_qla2xxx_register_configfs(void) 1813{ 1814 struct target_fabric_configfs *fabric, *npiv_fabric; 1815 int ret; 1816 1817 pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on " 1818 UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname, 1819 utsname()->machine); 1820 /* 1821 * Register the top level struct config_item_type with TCM core 1822 */ 1823 fabric = target_fabric_configfs_init(THIS_MODULE, "qla2xxx"); 1824 if (IS_ERR(fabric)) { 1825 pr_err("target_fabric_configfs_init() failed\n"); 1826 return PTR_ERR(fabric); 1827 } 1828 /* 1829 * Setup fabric->tf_ops from our local tcm_qla2xxx_ops 1830 */ 1831 fabric->tf_ops = tcm_qla2xxx_ops; 1832 /* 1833 * Setup default attribute lists for various fabric->tf_cit_tmpl 1834 */ 1835 TF_CIT_TMPL(fabric)->tfc_wwn_cit.ct_attrs = tcm_qla2xxx_wwn_attrs; 1836 TF_CIT_TMPL(fabric)->tfc_tpg_base_cit.ct_attrs = tcm_qla2xxx_tpg_attrs; 1837 TF_CIT_TMPL(fabric)->tfc_tpg_attrib_cit.ct_attrs = 1838 tcm_qla2xxx_tpg_attrib_attrs; 1839 TF_CIT_TMPL(fabric)->tfc_tpg_param_cit.ct_attrs = NULL; 1840 TF_CIT_TMPL(fabric)->tfc_tpg_np_base_cit.ct_attrs = NULL; 1841 TF_CIT_TMPL(fabric)->tfc_tpg_nacl_base_cit.ct_attrs = NULL; 1842 TF_CIT_TMPL(fabric)->tfc_tpg_nacl_attrib_cit.ct_attrs = NULL; 1843 TF_CIT_TMPL(fabric)->tfc_tpg_nacl_auth_cit.ct_attrs = NULL; 1844 TF_CIT_TMPL(fabric)->tfc_tpg_nacl_param_cit.ct_attrs = NULL; 1845 /* 1846 * Register the fabric for use within TCM 1847 */ 1848 ret = target_fabric_configfs_register(fabric); 1849 if (ret < 0) { 1850 pr_err("target_fabric_configfs_register() failed for TCM_QLA2XXX\n"); 1851 return ret; 1852 } 1853 /* 1854 * Setup our local pointer to *fabric 1855 */ 1856 tcm_qla2xxx_fabric_configfs = fabric; 1857 pr_debug("TCM_QLA2XXX[0] - Set fabric -> tcm_qla2xxx_fabric_configfs\n"); 1858 1859 /* 1860 * Register the top level struct config_item_type for NPIV with TCM core 1861 */ 1862 npiv_fabric = target_fabric_configfs_init(THIS_MODULE, "qla2xxx_npiv"); 1863 if (IS_ERR(npiv_fabric)) { 1864 pr_err("target_fabric_configfs_init() failed\n"); 1865 ret = PTR_ERR(npiv_fabric); 1866 goto out_fabric; 1867 } 1868 /* 1869 * Setup fabric->tf_ops from our local tcm_qla2xxx_npiv_ops 1870 */ 1871 npiv_fabric->tf_ops = tcm_qla2xxx_npiv_ops; 1872 /* 1873 * Setup default attribute lists for various npiv_fabric->tf_cit_tmpl 1874 */ 1875 TF_CIT_TMPL(npiv_fabric)->tfc_wwn_cit.ct_attrs = tcm_qla2xxx_wwn_attrs; 1876 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_base_cit.ct_attrs = NULL; 1877 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_attrib_cit.ct_attrs = NULL; 1878 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_param_cit.ct_attrs = NULL; 1879 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_np_base_cit.ct_attrs = NULL; 1880 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_base_cit.ct_attrs = NULL; 1881 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_attrib_cit.ct_attrs = NULL; 1882 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_auth_cit.ct_attrs = NULL; 1883 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_param_cit.ct_attrs = NULL; 1884 /* 1885 * Register the npiv_fabric for use within TCM 1886 */ 1887 ret = target_fabric_configfs_register(npiv_fabric); 1888 if (ret < 0) { 1889 pr_err("target_fabric_configfs_register() failed for TCM_QLA2XXX\n"); 1890 goto out_fabric; 1891 } 1892 /* 1893 * Setup our local pointer to *npiv_fabric 1894 */ 1895 tcm_qla2xxx_npiv_fabric_configfs = npiv_fabric; 1896 pr_debug("TCM_QLA2XXX[0] - Set fabric -> tcm_qla2xxx_npiv_fabric_configfs\n"); 1897 1898 tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free", 1899 WQ_MEM_RECLAIM, 0); 1900 if (!tcm_qla2xxx_free_wq) { 1901 ret = -ENOMEM; 1902 goto out_fabric_npiv; 1903 } 1904 1905 tcm_qla2xxx_cmd_wq = alloc_workqueue("tcm_qla2xxx_cmd", 0, 0); 1906 if (!tcm_qla2xxx_cmd_wq) { 1907 ret = -ENOMEM; 1908 goto out_free_wq; 1909 } 1910 1911 return 0; 1912 1913out_free_wq: 1914 destroy_workqueue(tcm_qla2xxx_free_wq); 1915out_fabric_npiv: 1916 target_fabric_configfs_deregister(tcm_qla2xxx_npiv_fabric_configfs); 1917out_fabric: 1918 target_fabric_configfs_deregister(tcm_qla2xxx_fabric_configfs); 1919 return ret; 1920} 1921 1922static void tcm_qla2xxx_deregister_configfs(void) 1923{ 1924 destroy_workqueue(tcm_qla2xxx_cmd_wq); 1925 destroy_workqueue(tcm_qla2xxx_free_wq); 1926 1927 target_fabric_configfs_deregister(tcm_qla2xxx_fabric_configfs); 1928 tcm_qla2xxx_fabric_configfs = NULL; 1929 pr_debug("TCM_QLA2XXX[0] - Cleared tcm_qla2xxx_fabric_configfs\n"); 1930 1931 target_fabric_configfs_deregister(tcm_qla2xxx_npiv_fabric_configfs); 1932 tcm_qla2xxx_npiv_fabric_configfs = NULL; 1933 pr_debug("TCM_QLA2XXX[0] - Cleared tcm_qla2xxx_npiv_fabric_configfs\n"); 1934} 1935 1936static int __init tcm_qla2xxx_init(void) 1937{ 1938 int ret; 1939 1940 ret = tcm_qla2xxx_register_configfs(); 1941 if (ret < 0) 1942 return ret; 1943 1944 return 0; 1945} 1946 1947static void __exit tcm_qla2xxx_exit(void) 1948{ 1949 tcm_qla2xxx_deregister_configfs(); 1950} 1951 1952MODULE_DESCRIPTION("TCM QLA2XXX series NPIV enabled fabric driver"); 1953MODULE_LICENSE("GPL"); 1954module_init(tcm_qla2xxx_init); 1955module_exit(tcm_qla2xxx_exit); 1956