tcm_qla2xxx.c revision e70beee783d6977d80eede88a3394f02eabddad1
1/******************************************************************************* 2 * This file contains tcm implementation using v4 configfs fabric infrastructure 3 * for QLogic target mode HBAs 4 * 5 * (c) Copyright 2010-2013 Datera, Inc. 6 * 7 * Author: Nicholas A. Bellinger <nab@daterainc.com> 8 * 9 * tcm_qla2xxx_parse_wwn() and tcm_qla2xxx_format_wwn() contains code from 10 * the TCM_FC / Open-FCoE.org fabric module. 11 * 12 * Copyright (c) 2010 Cisco Systems, Inc 13 * 14 * This program is free software; you can redistribute it and/or modify 15 * it under the terms of the GNU General Public License as published by 16 * the Free Software Foundation; either version 2 of the License, or 17 * (at your option) any later version. 18 * 19 * This program is distributed in the hope that it will be useful, 20 * but WITHOUT ANY WARRANTY; without even the implied warranty of 21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 22 * GNU General Public License for more details. 23 ****************************************************************************/ 24 25 26#include <linux/module.h> 27#include <linux/moduleparam.h> 28#include <generated/utsrelease.h> 29#include <linux/utsname.h> 30#include <linux/init.h> 31#include <linux/list.h> 32#include <linux/slab.h> 33#include <linux/kthread.h> 34#include <linux/types.h> 35#include <linux/string.h> 36#include <linux/configfs.h> 37#include <linux/ctype.h> 38#include <asm/unaligned.h> 39#include <scsi/scsi.h> 40#include <scsi/scsi_host.h> 41#include <scsi/scsi_device.h> 42#include <scsi/scsi_cmnd.h> 43#include <target/target_core_base.h> 44#include <target/target_core_fabric.h> 45#include <target/target_core_fabric_configfs.h> 46#include <target/target_core_configfs.h> 47#include <target/configfs_macros.h> 48 49#include "qla_def.h" 50#include "qla_target.h" 51#include "tcm_qla2xxx.h" 52 53struct workqueue_struct *tcm_qla2xxx_free_wq; 54struct workqueue_struct *tcm_qla2xxx_cmd_wq; 55 56/* 57 * Parse WWN. 58 * If strict, we require lower-case hex and colon separators to be sure 59 * the name is the same as what would be generated by ft_format_wwn() 60 * so the name and wwn are mapped one-to-one. 61 */ 62static ssize_t tcm_qla2xxx_parse_wwn(const char *name, u64 *wwn, int strict) 63{ 64 const char *cp; 65 char c; 66 u32 nibble; 67 u32 byte = 0; 68 u32 pos = 0; 69 u32 err; 70 71 *wwn = 0; 72 for (cp = name; cp < &name[TCM_QLA2XXX_NAMELEN - 1]; cp++) { 73 c = *cp; 74 if (c == '\n' && cp[1] == '\0') 75 continue; 76 if (strict && pos++ == 2 && byte++ < 7) { 77 pos = 0; 78 if (c == ':') 79 continue; 80 err = 1; 81 goto fail; 82 } 83 if (c == '\0') { 84 err = 2; 85 if (strict && byte != 8) 86 goto fail; 87 return cp - name; 88 } 89 err = 3; 90 if (isdigit(c)) 91 nibble = c - '0'; 92 else if (isxdigit(c) && (islower(c) || !strict)) 93 nibble = tolower(c) - 'a' + 10; 94 else 95 goto fail; 96 *wwn = (*wwn << 4) | nibble; 97 } 98 err = 4; 99fail: 100 pr_debug("err %u len %zu pos %u byte %u\n", 101 err, cp - name, pos, byte); 102 return -1; 103} 104 105static ssize_t tcm_qla2xxx_format_wwn(char *buf, size_t len, u64 wwn) 106{ 107 u8 b[8]; 108 109 put_unaligned_be64(wwn, b); 110 return snprintf(buf, len, 111 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x", 112 b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7]); 113} 114 115static char *tcm_qla2xxx_get_fabric_name(void) 116{ 117 return "qla2xxx"; 118} 119 120/* 121 * From drivers/scsi/scsi_transport_fc.c:fc_parse_wwn 122 */ 123static int tcm_qla2xxx_npiv_extract_wwn(const char *ns, u64 *nm) 124{ 125 unsigned int i, j; 126 u8 wwn[8]; 127 128 memset(wwn, 0, sizeof(wwn)); 129 130 /* Validate and store the new name */ 131 for (i = 0, j = 0; i < 16; i++) { 132 int value; 133 134 value = hex_to_bin(*ns++); 135 if (value >= 0) 136 j = (j << 4) | value; 137 else 138 return -EINVAL; 139 140 if (i % 2) { 141 wwn[i/2] = j & 0xff; 142 j = 0; 143 } 144 } 145 146 *nm = wwn_to_u64(wwn); 147 return 0; 148} 149 150/* 151 * This parsing logic follows drivers/scsi/scsi_transport_fc.c: 152 * store_fc_host_vport_create() 153 */ 154static int tcm_qla2xxx_npiv_parse_wwn( 155 const char *name, 156 size_t count, 157 u64 *wwpn, 158 u64 *wwnn) 159{ 160 unsigned int cnt = count; 161 int rc; 162 163 *wwpn = 0; 164 *wwnn = 0; 165 166 /* count may include a LF at end of string */ 167 if (name[cnt-1] == '\n' || name[cnt-1] == 0) 168 cnt--; 169 170 /* validate we have enough characters for WWPN */ 171 if ((cnt != (16+1+16)) || (name[16] != ':')) 172 return -EINVAL; 173 174 rc = tcm_qla2xxx_npiv_extract_wwn(&name[0], wwpn); 175 if (rc != 0) 176 return rc; 177 178 rc = tcm_qla2xxx_npiv_extract_wwn(&name[17], wwnn); 179 if (rc != 0) 180 return rc; 181 182 return 0; 183} 184 185static char *tcm_qla2xxx_npiv_get_fabric_name(void) 186{ 187 return "qla2xxx_npiv"; 188} 189 190static u8 tcm_qla2xxx_get_fabric_proto_ident(struct se_portal_group *se_tpg) 191{ 192 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 193 struct tcm_qla2xxx_tpg, se_tpg); 194 struct tcm_qla2xxx_lport *lport = tpg->lport; 195 u8 proto_id; 196 197 switch (lport->lport_proto_id) { 198 case SCSI_PROTOCOL_FCP: 199 default: 200 proto_id = fc_get_fabric_proto_ident(se_tpg); 201 break; 202 } 203 204 return proto_id; 205} 206 207static char *tcm_qla2xxx_get_fabric_wwn(struct se_portal_group *se_tpg) 208{ 209 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 210 struct tcm_qla2xxx_tpg, se_tpg); 211 struct tcm_qla2xxx_lport *lport = tpg->lport; 212 213 return lport->lport_naa_name; 214} 215 216static u16 tcm_qla2xxx_get_tag(struct se_portal_group *se_tpg) 217{ 218 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 219 struct tcm_qla2xxx_tpg, se_tpg); 220 return tpg->lport_tpgt; 221} 222 223static u32 tcm_qla2xxx_get_default_depth(struct se_portal_group *se_tpg) 224{ 225 return 1; 226} 227 228static u32 tcm_qla2xxx_get_pr_transport_id( 229 struct se_portal_group *se_tpg, 230 struct se_node_acl *se_nacl, 231 struct t10_pr_registration *pr_reg, 232 int *format_code, 233 unsigned char *buf) 234{ 235 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 236 struct tcm_qla2xxx_tpg, se_tpg); 237 struct tcm_qla2xxx_lport *lport = tpg->lport; 238 int ret = 0; 239 240 switch (lport->lport_proto_id) { 241 case SCSI_PROTOCOL_FCP: 242 default: 243 ret = fc_get_pr_transport_id(se_tpg, se_nacl, pr_reg, 244 format_code, buf); 245 break; 246 } 247 248 return ret; 249} 250 251static u32 tcm_qla2xxx_get_pr_transport_id_len( 252 struct se_portal_group *se_tpg, 253 struct se_node_acl *se_nacl, 254 struct t10_pr_registration *pr_reg, 255 int *format_code) 256{ 257 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 258 struct tcm_qla2xxx_tpg, se_tpg); 259 struct tcm_qla2xxx_lport *lport = tpg->lport; 260 int ret = 0; 261 262 switch (lport->lport_proto_id) { 263 case SCSI_PROTOCOL_FCP: 264 default: 265 ret = fc_get_pr_transport_id_len(se_tpg, se_nacl, pr_reg, 266 format_code); 267 break; 268 } 269 270 return ret; 271} 272 273static char *tcm_qla2xxx_parse_pr_out_transport_id( 274 struct se_portal_group *se_tpg, 275 const char *buf, 276 u32 *out_tid_len, 277 char **port_nexus_ptr) 278{ 279 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 280 struct tcm_qla2xxx_tpg, se_tpg); 281 struct tcm_qla2xxx_lport *lport = tpg->lport; 282 char *tid = NULL; 283 284 switch (lport->lport_proto_id) { 285 case SCSI_PROTOCOL_FCP: 286 default: 287 tid = fc_parse_pr_out_transport_id(se_tpg, buf, out_tid_len, 288 port_nexus_ptr); 289 break; 290 } 291 292 return tid; 293} 294 295static int tcm_qla2xxx_check_demo_mode(struct se_portal_group *se_tpg) 296{ 297 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 298 struct tcm_qla2xxx_tpg, se_tpg); 299 300 return tpg->tpg_attrib.generate_node_acls; 301} 302 303static int tcm_qla2xxx_check_demo_mode_cache(struct se_portal_group *se_tpg) 304{ 305 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 306 struct tcm_qla2xxx_tpg, se_tpg); 307 308 return tpg->tpg_attrib.cache_dynamic_acls; 309} 310 311static int tcm_qla2xxx_check_demo_write_protect(struct se_portal_group *se_tpg) 312{ 313 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 314 struct tcm_qla2xxx_tpg, se_tpg); 315 316 return tpg->tpg_attrib.demo_mode_write_protect; 317} 318 319static int tcm_qla2xxx_check_prod_write_protect(struct se_portal_group *se_tpg) 320{ 321 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 322 struct tcm_qla2xxx_tpg, se_tpg); 323 324 return tpg->tpg_attrib.prod_mode_write_protect; 325} 326 327static int tcm_qla2xxx_check_demo_mode_login_only(struct se_portal_group *se_tpg) 328{ 329 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 330 struct tcm_qla2xxx_tpg, se_tpg); 331 332 return tpg->tpg_attrib.demo_mode_login_only; 333} 334 335static struct se_node_acl *tcm_qla2xxx_alloc_fabric_acl( 336 struct se_portal_group *se_tpg) 337{ 338 struct tcm_qla2xxx_nacl *nacl; 339 340 nacl = kzalloc(sizeof(struct tcm_qla2xxx_nacl), GFP_KERNEL); 341 if (!nacl) { 342 pr_err("Unable to allocate struct tcm_qla2xxx_nacl\n"); 343 return NULL; 344 } 345 346 return &nacl->se_node_acl; 347} 348 349static void tcm_qla2xxx_release_fabric_acl( 350 struct se_portal_group *se_tpg, 351 struct se_node_acl *se_nacl) 352{ 353 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl, 354 struct tcm_qla2xxx_nacl, se_node_acl); 355 kfree(nacl); 356} 357 358static u32 tcm_qla2xxx_tpg_get_inst_index(struct se_portal_group *se_tpg) 359{ 360 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 361 struct tcm_qla2xxx_tpg, se_tpg); 362 363 return tpg->lport_tpgt; 364} 365 366static void tcm_qla2xxx_complete_mcmd(struct work_struct *work) 367{ 368 struct qla_tgt_mgmt_cmd *mcmd = container_of(work, 369 struct qla_tgt_mgmt_cmd, free_work); 370 371 transport_generic_free_cmd(&mcmd->se_cmd, 0); 372} 373 374/* 375 * Called from qla_target_template->free_mcmd(), and will call 376 * tcm_qla2xxx_release_cmd() via normal struct target_core_fabric_ops 377 * release callback. qla_hw_data->hardware_lock is expected to be held 378 */ 379static void tcm_qla2xxx_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd) 380{ 381 INIT_WORK(&mcmd->free_work, tcm_qla2xxx_complete_mcmd); 382 queue_work(tcm_qla2xxx_free_wq, &mcmd->free_work); 383} 384 385static void tcm_qla2xxx_complete_free(struct work_struct *work) 386{ 387 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 388 389 transport_generic_free_cmd(&cmd->se_cmd, 0); 390} 391 392/* 393 * Called from qla_target_template->free_cmd(), and will call 394 * tcm_qla2xxx_release_cmd via normal struct target_core_fabric_ops 395 * release callback. qla_hw_data->hardware_lock is expected to be held 396 */ 397static void tcm_qla2xxx_free_cmd(struct qla_tgt_cmd *cmd) 398{ 399 INIT_WORK(&cmd->work, tcm_qla2xxx_complete_free); 400 queue_work(tcm_qla2xxx_free_wq, &cmd->work); 401} 402 403/* 404 * Called from struct target_core_fabric_ops->check_stop_free() context 405 */ 406static int tcm_qla2xxx_check_stop_free(struct se_cmd *se_cmd) 407{ 408 return target_put_sess_cmd(se_cmd->se_sess, se_cmd); 409} 410 411/* tcm_qla2xxx_release_cmd - Callback from TCM Core to release underlying 412 * fabric descriptor @se_cmd command to release 413 */ 414static void tcm_qla2xxx_release_cmd(struct se_cmd *se_cmd) 415{ 416 struct qla_tgt_cmd *cmd; 417 418 if (se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) { 419 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd, 420 struct qla_tgt_mgmt_cmd, se_cmd); 421 qlt_free_mcmd(mcmd); 422 return; 423 } 424 425 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd); 426 qlt_free_cmd(cmd); 427} 428 429static int tcm_qla2xxx_shutdown_session(struct se_session *se_sess) 430{ 431 struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr; 432 struct scsi_qla_host *vha; 433 unsigned long flags; 434 435 BUG_ON(!sess); 436 vha = sess->vha; 437 438 spin_lock_irqsave(&vha->hw->hardware_lock, flags); 439 target_sess_cmd_list_set_waiting(se_sess); 440 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags); 441 442 return 1; 443} 444 445static void tcm_qla2xxx_close_session(struct se_session *se_sess) 446{ 447 struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr; 448 struct scsi_qla_host *vha; 449 unsigned long flags; 450 451 BUG_ON(!sess); 452 vha = sess->vha; 453 454 spin_lock_irqsave(&vha->hw->hardware_lock, flags); 455 qlt_unreg_sess(sess); 456 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags); 457} 458 459static u32 tcm_qla2xxx_sess_get_index(struct se_session *se_sess) 460{ 461 return 0; 462} 463 464static int tcm_qla2xxx_write_pending(struct se_cmd *se_cmd) 465{ 466 struct qla_tgt_cmd *cmd = container_of(se_cmd, 467 struct qla_tgt_cmd, se_cmd); 468 469 cmd->bufflen = se_cmd->data_length; 470 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd); 471 472 cmd->sg_cnt = se_cmd->t_data_nents; 473 cmd->sg = se_cmd->t_data_sg; 474 475 /* 476 * qla_target.c:qlt_rdy_to_xfer() will call pci_map_sg() to setup 477 * the SGL mappings into PCIe memory for incoming FCP WRITE data. 478 */ 479 return qlt_rdy_to_xfer(cmd); 480} 481 482static int tcm_qla2xxx_write_pending_status(struct se_cmd *se_cmd) 483{ 484 unsigned long flags; 485 /* 486 * Check for WRITE_PENDING status to determine if we need to wait for 487 * CTIO aborts to be posted via hardware in tcm_qla2xxx_handle_data(). 488 */ 489 spin_lock_irqsave(&se_cmd->t_state_lock, flags); 490 if (se_cmd->t_state == TRANSPORT_WRITE_PENDING || 491 se_cmd->t_state == TRANSPORT_COMPLETE_QF_WP) { 492 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags); 493 wait_for_completion_timeout(&se_cmd->t_transport_stop_comp, 494 3000); 495 return 0; 496 } 497 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags); 498 499 return 0; 500} 501 502static void tcm_qla2xxx_set_default_node_attrs(struct se_node_acl *nacl) 503{ 504 return; 505} 506 507static u32 tcm_qla2xxx_get_task_tag(struct se_cmd *se_cmd) 508{ 509 struct qla_tgt_cmd *cmd = container_of(se_cmd, 510 struct qla_tgt_cmd, se_cmd); 511 512 return cmd->tag; 513} 514 515static int tcm_qla2xxx_get_cmd_state(struct se_cmd *se_cmd) 516{ 517 return 0; 518} 519 520/* 521 * Called from process context in qla_target.c:qlt_do_work() code 522 */ 523static int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd, 524 unsigned char *cdb, uint32_t data_length, int fcp_task_attr, 525 int data_dir, int bidi) 526{ 527 struct se_cmd *se_cmd = &cmd->se_cmd; 528 struct se_session *se_sess; 529 struct qla_tgt_sess *sess; 530 int flags = TARGET_SCF_ACK_KREF; 531 532 if (bidi) 533 flags |= TARGET_SCF_BIDI_OP; 534 535 sess = cmd->sess; 536 if (!sess) { 537 pr_err("Unable to locate struct qla_tgt_sess from qla_tgt_cmd\n"); 538 return -EINVAL; 539 } 540 541 se_sess = sess->se_sess; 542 if (!se_sess) { 543 pr_err("Unable to locate active struct se_session\n"); 544 return -EINVAL; 545 } 546 547 return target_submit_cmd(se_cmd, se_sess, cdb, &cmd->sense_buffer[0], 548 cmd->unpacked_lun, data_length, fcp_task_attr, 549 data_dir, flags); 550} 551 552static void tcm_qla2xxx_handle_data_work(struct work_struct *work) 553{ 554 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 555 556 /* 557 * Ensure that the complete FCP WRITE payload has been received. 558 * Otherwise return an exception via CHECK_CONDITION status. 559 */ 560 if (!cmd->write_data_transferred) { 561 /* 562 * Check if se_cmd has already been aborted via LUN_RESET, and 563 * waiting upon completion in tcm_qla2xxx_write_pending_status() 564 */ 565 if (cmd->se_cmd.transport_state & CMD_T_ABORTED) { 566 complete(&cmd->se_cmd.t_transport_stop_comp); 567 return; 568 } 569 570 transport_generic_request_failure(&cmd->se_cmd, 571 TCM_CHECK_CONDITION_ABORT_CMD); 572 return; 573 } 574 575 return target_execute_cmd(&cmd->se_cmd); 576} 577 578/* 579 * Called from qla_target.c:qlt_do_ctio_completion() 580 */ 581static void tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd) 582{ 583 INIT_WORK(&cmd->work, tcm_qla2xxx_handle_data_work); 584 queue_work(tcm_qla2xxx_free_wq, &cmd->work); 585} 586 587/* 588 * Called from qla_target.c:qlt_issue_task_mgmt() 589 */ 590static int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *mcmd, uint32_t lun, 591 uint8_t tmr_func, uint32_t tag) 592{ 593 struct qla_tgt_sess *sess = mcmd->sess; 594 struct se_cmd *se_cmd = &mcmd->se_cmd; 595 596 return target_submit_tmr(se_cmd, sess->se_sess, NULL, lun, mcmd, 597 tmr_func, GFP_ATOMIC, tag, TARGET_SCF_ACK_KREF); 598} 599 600static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd) 601{ 602 struct qla_tgt_cmd *cmd = container_of(se_cmd, 603 struct qla_tgt_cmd, se_cmd); 604 605 cmd->bufflen = se_cmd->data_length; 606 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd); 607 cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED); 608 609 cmd->sg_cnt = se_cmd->t_data_nents; 610 cmd->sg = se_cmd->t_data_sg; 611 cmd->offset = 0; 612 613 /* 614 * Now queue completed DATA_IN the qla2xxx LLD and response ring 615 */ 616 return qlt_xmit_response(cmd, QLA_TGT_XMIT_DATA|QLA_TGT_XMIT_STATUS, 617 se_cmd->scsi_status); 618} 619 620static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd) 621{ 622 struct qla_tgt_cmd *cmd = container_of(se_cmd, 623 struct qla_tgt_cmd, se_cmd); 624 int xmit_type = QLA_TGT_XMIT_STATUS; 625 626 cmd->bufflen = se_cmd->data_length; 627 cmd->sg = NULL; 628 cmd->sg_cnt = 0; 629 cmd->offset = 0; 630 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd); 631 cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED); 632 633 if (se_cmd->data_direction == DMA_FROM_DEVICE) { 634 /* 635 * For FCP_READ with CHECK_CONDITION status, clear cmd->bufflen 636 * for qla_tgt_xmit_response LLD code 637 */ 638 if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) { 639 se_cmd->se_cmd_flags &= ~SCF_OVERFLOW_BIT; 640 se_cmd->residual_count = 0; 641 } 642 se_cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT; 643 se_cmd->residual_count += se_cmd->data_length; 644 645 cmd->bufflen = 0; 646 } 647 /* 648 * Now queue status response to qla2xxx LLD code and response ring 649 */ 650 return qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status); 651} 652 653static void tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd) 654{ 655 struct se_tmr_req *se_tmr = se_cmd->se_tmr_req; 656 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd, 657 struct qla_tgt_mgmt_cmd, se_cmd); 658 659 pr_debug("queue_tm_rsp: mcmd: %p func: 0x%02x response: 0x%02x\n", 660 mcmd, se_tmr->function, se_tmr->response); 661 /* 662 * Do translation between TCM TM response codes and 663 * QLA2xxx FC TM response codes. 664 */ 665 switch (se_tmr->response) { 666 case TMR_FUNCTION_COMPLETE: 667 mcmd->fc_tm_rsp = FC_TM_SUCCESS; 668 break; 669 case TMR_TASK_DOES_NOT_EXIST: 670 mcmd->fc_tm_rsp = FC_TM_BAD_CMD; 671 break; 672 case TMR_FUNCTION_REJECTED: 673 mcmd->fc_tm_rsp = FC_TM_REJECT; 674 break; 675 case TMR_LUN_DOES_NOT_EXIST: 676 default: 677 mcmd->fc_tm_rsp = FC_TM_FAILED; 678 break; 679 } 680 /* 681 * Queue the TM response to QLA2xxx LLD to build a 682 * CTIO response packet. 683 */ 684 qlt_xmit_tm_rsp(mcmd); 685} 686 687static void tcm_qla2xxx_aborted_task(struct se_cmd *se_cmd) 688{ 689 struct qla_tgt_cmd *cmd = container_of(se_cmd, 690 struct qla_tgt_cmd, se_cmd); 691 struct scsi_qla_host *vha = cmd->vha; 692 struct qla_hw_data *ha = vha->hw; 693 694 if (!cmd->sg_mapped) 695 return; 696 697 pci_unmap_sg(ha->pdev, cmd->sg, cmd->sg_cnt, cmd->dma_data_direction); 698 cmd->sg_mapped = 0; 699} 700 701/* Local pointer to allocated TCM configfs fabric module */ 702struct target_fabric_configfs *tcm_qla2xxx_fabric_configfs; 703struct target_fabric_configfs *tcm_qla2xxx_npiv_fabric_configfs; 704 705static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *, 706 struct tcm_qla2xxx_nacl *, struct qla_tgt_sess *); 707/* 708 * Expected to be called with struct qla_hw_data->hardware_lock held 709 */ 710static void tcm_qla2xxx_clear_nacl_from_fcport_map(struct qla_tgt_sess *sess) 711{ 712 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl; 713 struct se_portal_group *se_tpg = se_nacl->se_tpg; 714 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn; 715 struct tcm_qla2xxx_lport *lport = container_of(se_wwn, 716 struct tcm_qla2xxx_lport, lport_wwn); 717 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl, 718 struct tcm_qla2xxx_nacl, se_node_acl); 719 void *node; 720 721 pr_debug("fc_rport domain: port_id 0x%06x\n", nacl->nport_id); 722 723 node = btree_remove32(&lport->lport_fcport_map, nacl->nport_id); 724 WARN_ON(node && (node != se_nacl)); 725 726 pr_debug("Removed from fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%06x\n", 727 se_nacl, nacl->nport_wwnn, nacl->nport_id); 728 /* 729 * Now clear the se_nacl and session pointers from our HW lport lookup 730 * table mapping for this initiator's fabric S_ID and LOOP_ID entries. 731 * 732 * This is done ahead of callbacks into tcm_qla2xxx_free_session() -> 733 * target_wait_for_sess_cmds() before the session waits for outstanding 734 * I/O to complete, to avoid a race between session shutdown execution 735 * and incoming ATIOs or TMRs picking up a stale se_node_act reference. 736 */ 737 tcm_qla2xxx_clear_sess_lookup(lport, nacl, sess); 738} 739 740static void tcm_qla2xxx_release_session(struct kref *kref) 741{ 742 struct se_session *se_sess = container_of(kref, 743 struct se_session, sess_kref); 744 745 qlt_unreg_sess(se_sess->fabric_sess_ptr); 746} 747 748static void tcm_qla2xxx_put_session(struct se_session *se_sess) 749{ 750 struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr; 751 struct qla_hw_data *ha = sess->vha->hw; 752 unsigned long flags; 753 754 spin_lock_irqsave(&ha->hardware_lock, flags); 755 kref_put(&se_sess->sess_kref, tcm_qla2xxx_release_session); 756 spin_unlock_irqrestore(&ha->hardware_lock, flags); 757} 758 759static void tcm_qla2xxx_put_sess(struct qla_tgt_sess *sess) 760{ 761 if (!sess) 762 return; 763 764 assert_spin_locked(&sess->vha->hw->hardware_lock); 765 kref_put(&sess->se_sess->sess_kref, tcm_qla2xxx_release_session); 766} 767 768static void tcm_qla2xxx_shutdown_sess(struct qla_tgt_sess *sess) 769{ 770 assert_spin_locked(&sess->vha->hw->hardware_lock); 771 target_sess_cmd_list_set_waiting(sess->se_sess); 772} 773 774static struct se_node_acl *tcm_qla2xxx_make_nodeacl( 775 struct se_portal_group *se_tpg, 776 struct config_group *group, 777 const char *name) 778{ 779 struct se_node_acl *se_nacl, *se_nacl_new; 780 struct tcm_qla2xxx_nacl *nacl; 781 u64 wwnn; 782 u32 qla2xxx_nexus_depth; 783 784 if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0) 785 return ERR_PTR(-EINVAL); 786 787 se_nacl_new = tcm_qla2xxx_alloc_fabric_acl(se_tpg); 788 if (!se_nacl_new) 789 return ERR_PTR(-ENOMEM); 790/* #warning FIXME: Hardcoded qla2xxx_nexus depth in tcm_qla2xxx_make_nodeacl */ 791 qla2xxx_nexus_depth = 1; 792 793 /* 794 * se_nacl_new may be released by core_tpg_add_initiator_node_acl() 795 * when converting a NodeACL from demo mode -> explict 796 */ 797 se_nacl = core_tpg_add_initiator_node_acl(se_tpg, se_nacl_new, 798 name, qla2xxx_nexus_depth); 799 if (IS_ERR(se_nacl)) { 800 tcm_qla2xxx_release_fabric_acl(se_tpg, se_nacl_new); 801 return se_nacl; 802 } 803 /* 804 * Locate our struct tcm_qla2xxx_nacl and set the FC Nport WWPN 805 */ 806 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 807 nacl->nport_wwnn = wwnn; 808 tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn); 809 810 return se_nacl; 811} 812 813static void tcm_qla2xxx_drop_nodeacl(struct se_node_acl *se_acl) 814{ 815 struct se_portal_group *se_tpg = se_acl->se_tpg; 816 struct tcm_qla2xxx_nacl *nacl = container_of(se_acl, 817 struct tcm_qla2xxx_nacl, se_node_acl); 818 819 core_tpg_del_initiator_node_acl(se_tpg, se_acl, 1); 820 kfree(nacl); 821} 822 823/* Start items for tcm_qla2xxx_tpg_attrib_cit */ 824 825#define DEF_QLA_TPG_ATTRIB(name) \ 826 \ 827static ssize_t tcm_qla2xxx_tpg_attrib_show_##name( \ 828 struct se_portal_group *se_tpg, \ 829 char *page) \ 830{ \ 831 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \ 832 struct tcm_qla2xxx_tpg, se_tpg); \ 833 \ 834 return sprintf(page, "%u\n", tpg->tpg_attrib.name); \ 835} \ 836 \ 837static ssize_t tcm_qla2xxx_tpg_attrib_store_##name( \ 838 struct se_portal_group *se_tpg, \ 839 const char *page, \ 840 size_t count) \ 841{ \ 842 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \ 843 struct tcm_qla2xxx_tpg, se_tpg); \ 844 unsigned long val; \ 845 int ret; \ 846 \ 847 ret = kstrtoul(page, 0, &val); \ 848 if (ret < 0) { \ 849 pr_err("kstrtoul() failed with" \ 850 " ret: %d\n", ret); \ 851 return -EINVAL; \ 852 } \ 853 ret = tcm_qla2xxx_set_attrib_##name(tpg, val); \ 854 \ 855 return (!ret) ? count : -EINVAL; \ 856} 857 858#define DEF_QLA_TPG_ATTR_BOOL(_name) \ 859 \ 860static int tcm_qla2xxx_set_attrib_##_name( \ 861 struct tcm_qla2xxx_tpg *tpg, \ 862 unsigned long val) \ 863{ \ 864 struct tcm_qla2xxx_tpg_attrib *a = &tpg->tpg_attrib; \ 865 \ 866 if ((val != 0) && (val != 1)) { \ 867 pr_err("Illegal boolean value %lu\n", val); \ 868 return -EINVAL; \ 869 } \ 870 \ 871 a->_name = val; \ 872 return 0; \ 873} 874 875#define QLA_TPG_ATTR(_name, _mode) \ 876 TF_TPG_ATTRIB_ATTR(tcm_qla2xxx, _name, _mode); 877 878/* 879 * Define tcm_qla2xxx_tpg_attrib_s_generate_node_acls 880 */ 881DEF_QLA_TPG_ATTR_BOOL(generate_node_acls); 882DEF_QLA_TPG_ATTRIB(generate_node_acls); 883QLA_TPG_ATTR(generate_node_acls, S_IRUGO | S_IWUSR); 884 885/* 886 Define tcm_qla2xxx_attrib_s_cache_dynamic_acls 887 */ 888DEF_QLA_TPG_ATTR_BOOL(cache_dynamic_acls); 889DEF_QLA_TPG_ATTRIB(cache_dynamic_acls); 890QLA_TPG_ATTR(cache_dynamic_acls, S_IRUGO | S_IWUSR); 891 892/* 893 * Define tcm_qla2xxx_tpg_attrib_s_demo_mode_write_protect 894 */ 895DEF_QLA_TPG_ATTR_BOOL(demo_mode_write_protect); 896DEF_QLA_TPG_ATTRIB(demo_mode_write_protect); 897QLA_TPG_ATTR(demo_mode_write_protect, S_IRUGO | S_IWUSR); 898 899/* 900 * Define tcm_qla2xxx_tpg_attrib_s_prod_mode_write_protect 901 */ 902DEF_QLA_TPG_ATTR_BOOL(prod_mode_write_protect); 903DEF_QLA_TPG_ATTRIB(prod_mode_write_protect); 904QLA_TPG_ATTR(prod_mode_write_protect, S_IRUGO | S_IWUSR); 905 906/* 907 * Define tcm_qla2xxx_tpg_attrib_s_demo_mode_login_only 908 */ 909DEF_QLA_TPG_ATTR_BOOL(demo_mode_login_only); 910DEF_QLA_TPG_ATTRIB(demo_mode_login_only); 911QLA_TPG_ATTR(demo_mode_login_only, S_IRUGO | S_IWUSR); 912 913static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = { 914 &tcm_qla2xxx_tpg_attrib_generate_node_acls.attr, 915 &tcm_qla2xxx_tpg_attrib_cache_dynamic_acls.attr, 916 &tcm_qla2xxx_tpg_attrib_demo_mode_write_protect.attr, 917 &tcm_qla2xxx_tpg_attrib_prod_mode_write_protect.attr, 918 &tcm_qla2xxx_tpg_attrib_demo_mode_login_only.attr, 919 NULL, 920}; 921 922/* End items for tcm_qla2xxx_tpg_attrib_cit */ 923 924static ssize_t tcm_qla2xxx_tpg_show_enable( 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 snprintf(page, PAGE_SIZE, "%d\n", 932 atomic_read(&tpg->lport_tpg_enabled)); 933} 934 935static void tcm_qla2xxx_depend_tpg(struct work_struct *work) 936{ 937 struct tcm_qla2xxx_tpg *base_tpg = container_of(work, 938 struct tcm_qla2xxx_tpg, tpg_base_work); 939 struct se_portal_group *se_tpg = &base_tpg->se_tpg; 940 struct scsi_qla_host *base_vha = base_tpg->lport->qla_vha; 941 942 if (!configfs_depend_item(se_tpg->se_tpg_tfo->tf_subsys, 943 &se_tpg->tpg_group.cg_item)) { 944 atomic_set(&base_tpg->lport_tpg_enabled, 1); 945 qlt_enable_vha(base_vha); 946 } 947 complete(&base_tpg->tpg_base_comp); 948} 949 950static void tcm_qla2xxx_undepend_tpg(struct work_struct *work) 951{ 952 struct tcm_qla2xxx_tpg *base_tpg = container_of(work, 953 struct tcm_qla2xxx_tpg, tpg_base_work); 954 struct se_portal_group *se_tpg = &base_tpg->se_tpg; 955 struct scsi_qla_host *base_vha = base_tpg->lport->qla_vha; 956 957 if (!qlt_stop_phase1(base_vha->vha_tgt.qla_tgt)) { 958 atomic_set(&base_tpg->lport_tpg_enabled, 0); 959 configfs_undepend_item(se_tpg->se_tpg_tfo->tf_subsys, 960 &se_tpg->tpg_group.cg_item); 961 } 962 complete(&base_tpg->tpg_base_comp); 963} 964 965static ssize_t tcm_qla2xxx_tpg_store_enable( 966 struct se_portal_group *se_tpg, 967 const char *page, 968 size_t count) 969{ 970 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 971 struct tcm_qla2xxx_tpg, se_tpg); 972 unsigned long op; 973 int rc; 974 975 rc = kstrtoul(page, 0, &op); 976 if (rc < 0) { 977 pr_err("kstrtoul() returned %d\n", rc); 978 return -EINVAL; 979 } 980 if ((op != 1) && (op != 0)) { 981 pr_err("Illegal value for tpg_enable: %lu\n", op); 982 return -EINVAL; 983 } 984 if (op) { 985 if (atomic_read(&tpg->lport_tpg_enabled)) 986 return -EEXIST; 987 988 INIT_WORK(&tpg->tpg_base_work, tcm_qla2xxx_depend_tpg); 989 } else { 990 if (!atomic_read(&tpg->lport_tpg_enabled)) 991 return count; 992 993 INIT_WORK(&tpg->tpg_base_work, tcm_qla2xxx_undepend_tpg); 994 } 995 init_completion(&tpg->tpg_base_comp); 996 schedule_work(&tpg->tpg_base_work); 997 wait_for_completion(&tpg->tpg_base_comp); 998 999 if (op) { 1000 if (!atomic_read(&tpg->lport_tpg_enabled)) 1001 return -ENODEV; 1002 } else { 1003 if (atomic_read(&tpg->lport_tpg_enabled)) 1004 return -EPERM; 1005 } 1006 return count; 1007} 1008 1009TF_TPG_BASE_ATTR(tcm_qla2xxx, enable, S_IRUGO | S_IWUSR); 1010 1011static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = { 1012 &tcm_qla2xxx_tpg_enable.attr, 1013 NULL, 1014}; 1015 1016static struct se_portal_group *tcm_qla2xxx_make_tpg( 1017 struct se_wwn *wwn, 1018 struct config_group *group, 1019 const char *name) 1020{ 1021 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1022 struct tcm_qla2xxx_lport, lport_wwn); 1023 struct tcm_qla2xxx_tpg *tpg; 1024 unsigned long tpgt; 1025 int ret; 1026 1027 if (strstr(name, "tpgt_") != name) 1028 return ERR_PTR(-EINVAL); 1029 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX) 1030 return ERR_PTR(-EINVAL); 1031 1032 if ((tpgt != 1)) { 1033 pr_err("In non NPIV mode, a single TPG=1 is used for HW port mappings\n"); 1034 return ERR_PTR(-ENOSYS); 1035 } 1036 1037 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL); 1038 if (!tpg) { 1039 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n"); 1040 return ERR_PTR(-ENOMEM); 1041 } 1042 tpg->lport = lport; 1043 tpg->lport_tpgt = tpgt; 1044 /* 1045 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic 1046 * NodeACLs 1047 */ 1048 tpg->tpg_attrib.generate_node_acls = 1; 1049 tpg->tpg_attrib.demo_mode_write_protect = 1; 1050 tpg->tpg_attrib.cache_dynamic_acls = 1; 1051 tpg->tpg_attrib.demo_mode_login_only = 1; 1052 1053 ret = core_tpg_register(&tcm_qla2xxx_fabric_configfs->tf_ops, wwn, 1054 &tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL); 1055 if (ret < 0) { 1056 kfree(tpg); 1057 return NULL; 1058 } 1059 1060 lport->tpg_1 = tpg; 1061 1062 return &tpg->se_tpg; 1063} 1064 1065static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg) 1066{ 1067 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1068 struct tcm_qla2xxx_tpg, se_tpg); 1069 struct tcm_qla2xxx_lport *lport = tpg->lport; 1070 struct scsi_qla_host *vha = lport->qla_vha; 1071 /* 1072 * Call into qla2x_target.c LLD logic to shutdown the active 1073 * FC Nexuses and disable target mode operation for this qla_hw_data 1074 */ 1075 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stop) 1076 qlt_stop_phase1(vha->vha_tgt.qla_tgt); 1077 1078 core_tpg_deregister(se_tpg); 1079 /* 1080 * Clear local TPG=1 pointer for non NPIV mode. 1081 */ 1082 lport->tpg_1 = NULL; 1083 kfree(tpg); 1084} 1085 1086static ssize_t tcm_qla2xxx_npiv_tpg_show_enable( 1087 struct se_portal_group *se_tpg, 1088 char *page) 1089{ 1090 return tcm_qla2xxx_tpg_show_enable(se_tpg, page); 1091} 1092 1093static ssize_t tcm_qla2xxx_npiv_tpg_store_enable( 1094 struct se_portal_group *se_tpg, 1095 const char *page, 1096 size_t count) 1097{ 1098 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn; 1099 struct tcm_qla2xxx_lport *lport = container_of(se_wwn, 1100 struct tcm_qla2xxx_lport, lport_wwn); 1101 struct scsi_qla_host *vha = lport->qla_vha; 1102 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1103 struct tcm_qla2xxx_tpg, se_tpg); 1104 unsigned long op; 1105 int rc; 1106 1107 rc = kstrtoul(page, 0, &op); 1108 if (rc < 0) { 1109 pr_err("kstrtoul() returned %d\n", rc); 1110 return -EINVAL; 1111 } 1112 if ((op != 1) && (op != 0)) { 1113 pr_err("Illegal value for tpg_enable: %lu\n", op); 1114 return -EINVAL; 1115 } 1116 if (op) { 1117 if (atomic_read(&tpg->lport_tpg_enabled)) 1118 return -EEXIST; 1119 1120 atomic_set(&tpg->lport_tpg_enabled, 1); 1121 qlt_enable_vha(vha); 1122 } else { 1123 if (!atomic_read(&tpg->lport_tpg_enabled)) 1124 return count; 1125 1126 atomic_set(&tpg->lport_tpg_enabled, 0); 1127 qlt_stop_phase1(vha->vha_tgt.qla_tgt); 1128 } 1129 1130 return count; 1131} 1132 1133TF_TPG_BASE_ATTR(tcm_qla2xxx_npiv, enable, S_IRUGO | S_IWUSR); 1134 1135static struct configfs_attribute *tcm_qla2xxx_npiv_tpg_attrs[] = { 1136 &tcm_qla2xxx_npiv_tpg_enable.attr, 1137 NULL, 1138}; 1139 1140static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg( 1141 struct se_wwn *wwn, 1142 struct config_group *group, 1143 const char *name) 1144{ 1145 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1146 struct tcm_qla2xxx_lport, lport_wwn); 1147 struct tcm_qla2xxx_tpg *tpg; 1148 unsigned long tpgt; 1149 int ret; 1150 1151 if (strstr(name, "tpgt_") != name) 1152 return ERR_PTR(-EINVAL); 1153 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX) 1154 return ERR_PTR(-EINVAL); 1155 1156 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL); 1157 if (!tpg) { 1158 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n"); 1159 return ERR_PTR(-ENOMEM); 1160 } 1161 tpg->lport = lport; 1162 tpg->lport_tpgt = tpgt; 1163 1164 /* 1165 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic 1166 * NodeACLs 1167 */ 1168 tpg->tpg_attrib.generate_node_acls = 1; 1169 tpg->tpg_attrib.demo_mode_write_protect = 1; 1170 tpg->tpg_attrib.cache_dynamic_acls = 1; 1171 tpg->tpg_attrib.demo_mode_login_only = 1; 1172 1173 ret = core_tpg_register(&tcm_qla2xxx_npiv_fabric_configfs->tf_ops, wwn, 1174 &tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL); 1175 if (ret < 0) { 1176 kfree(tpg); 1177 return NULL; 1178 } 1179 lport->tpg_1 = tpg; 1180 return &tpg->se_tpg; 1181} 1182 1183/* 1184 * Expected to be called with struct qla_hw_data->hardware_lock held 1185 */ 1186static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_s_id( 1187 scsi_qla_host_t *vha, 1188 const uint8_t *s_id) 1189{ 1190 struct tcm_qla2xxx_lport *lport; 1191 struct se_node_acl *se_nacl; 1192 struct tcm_qla2xxx_nacl *nacl; 1193 u32 key; 1194 1195 lport = vha->vha_tgt.target_lport_ptr; 1196 if (!lport) { 1197 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1198 dump_stack(); 1199 return NULL; 1200 } 1201 1202 key = (((unsigned long)s_id[0] << 16) | 1203 ((unsigned long)s_id[1] << 8) | 1204 (unsigned long)s_id[2]); 1205 pr_debug("find_sess_by_s_id: 0x%06x\n", key); 1206 1207 se_nacl = btree_lookup32(&lport->lport_fcport_map, key); 1208 if (!se_nacl) { 1209 pr_debug("Unable to locate s_id: 0x%06x\n", key); 1210 return NULL; 1211 } 1212 pr_debug("find_sess_by_s_id: located se_nacl: %p, initiatorname: %s\n", 1213 se_nacl, se_nacl->initiatorname); 1214 1215 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1216 if (!nacl->qla_tgt_sess) { 1217 pr_err("Unable to locate struct qla_tgt_sess\n"); 1218 return NULL; 1219 } 1220 1221 return nacl->qla_tgt_sess; 1222} 1223 1224/* 1225 * Expected to be called with struct qla_hw_data->hardware_lock held 1226 */ 1227static void tcm_qla2xxx_set_sess_by_s_id( 1228 struct tcm_qla2xxx_lport *lport, 1229 struct se_node_acl *new_se_nacl, 1230 struct tcm_qla2xxx_nacl *nacl, 1231 struct se_session *se_sess, 1232 struct qla_tgt_sess *qla_tgt_sess, 1233 uint8_t *s_id) 1234{ 1235 u32 key; 1236 void *slot; 1237 int rc; 1238 1239 key = (((unsigned long)s_id[0] << 16) | 1240 ((unsigned long)s_id[1] << 8) | 1241 (unsigned long)s_id[2]); 1242 pr_debug("set_sess_by_s_id: %06x\n", key); 1243 1244 slot = btree_lookup32(&lport->lport_fcport_map, key); 1245 if (!slot) { 1246 if (new_se_nacl) { 1247 pr_debug("Setting up new fc_port entry to new_se_nacl\n"); 1248 nacl->nport_id = key; 1249 rc = btree_insert32(&lport->lport_fcport_map, key, 1250 new_se_nacl, GFP_ATOMIC); 1251 if (rc) 1252 printk(KERN_ERR "Unable to insert s_id into fcport_map: %06x\n", 1253 (int)key); 1254 } else { 1255 pr_debug("Wiping nonexisting fc_port entry\n"); 1256 } 1257 1258 qla_tgt_sess->se_sess = se_sess; 1259 nacl->qla_tgt_sess = qla_tgt_sess; 1260 return; 1261 } 1262 1263 if (nacl->qla_tgt_sess) { 1264 if (new_se_nacl == NULL) { 1265 pr_debug("Clearing existing nacl->qla_tgt_sess and fc_port entry\n"); 1266 btree_remove32(&lport->lport_fcport_map, key); 1267 nacl->qla_tgt_sess = NULL; 1268 return; 1269 } 1270 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_port entry\n"); 1271 btree_update32(&lport->lport_fcport_map, key, new_se_nacl); 1272 qla_tgt_sess->se_sess = se_sess; 1273 nacl->qla_tgt_sess = qla_tgt_sess; 1274 return; 1275 } 1276 1277 if (new_se_nacl == NULL) { 1278 pr_debug("Clearing existing fc_port entry\n"); 1279 btree_remove32(&lport->lport_fcport_map, key); 1280 return; 1281 } 1282 1283 pr_debug("Replacing existing fc_port entry w/o active nacl->qla_tgt_sess\n"); 1284 btree_update32(&lport->lport_fcport_map, key, new_se_nacl); 1285 qla_tgt_sess->se_sess = se_sess; 1286 nacl->qla_tgt_sess = qla_tgt_sess; 1287 1288 pr_debug("Setup nacl->qla_tgt_sess %p by s_id for se_nacl: %p, initiatorname: %s\n", 1289 nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname); 1290} 1291 1292/* 1293 * Expected to be called with struct qla_hw_data->hardware_lock held 1294 */ 1295static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_loop_id( 1296 scsi_qla_host_t *vha, 1297 const uint16_t loop_id) 1298{ 1299 struct tcm_qla2xxx_lport *lport; 1300 struct se_node_acl *se_nacl; 1301 struct tcm_qla2xxx_nacl *nacl; 1302 struct tcm_qla2xxx_fc_loopid *fc_loopid; 1303 1304 lport = vha->vha_tgt.target_lport_ptr; 1305 if (!lport) { 1306 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1307 dump_stack(); 1308 return NULL; 1309 } 1310 1311 pr_debug("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id); 1312 1313 fc_loopid = lport->lport_loopid_map + loop_id; 1314 se_nacl = fc_loopid->se_nacl; 1315 if (!se_nacl) { 1316 pr_debug("Unable to locate se_nacl by loop_id: 0x%04x\n", 1317 loop_id); 1318 return NULL; 1319 } 1320 1321 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1322 1323 if (!nacl->qla_tgt_sess) { 1324 pr_err("Unable to locate struct qla_tgt_sess\n"); 1325 return NULL; 1326 } 1327 1328 return nacl->qla_tgt_sess; 1329} 1330 1331/* 1332 * Expected to be called with struct qla_hw_data->hardware_lock held 1333 */ 1334static void tcm_qla2xxx_set_sess_by_loop_id( 1335 struct tcm_qla2xxx_lport *lport, 1336 struct se_node_acl *new_se_nacl, 1337 struct tcm_qla2xxx_nacl *nacl, 1338 struct se_session *se_sess, 1339 struct qla_tgt_sess *qla_tgt_sess, 1340 uint16_t loop_id) 1341{ 1342 struct se_node_acl *saved_nacl; 1343 struct tcm_qla2xxx_fc_loopid *fc_loopid; 1344 1345 pr_debug("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id); 1346 1347 fc_loopid = &((struct tcm_qla2xxx_fc_loopid *) 1348 lport->lport_loopid_map)[loop_id]; 1349 1350 saved_nacl = fc_loopid->se_nacl; 1351 if (!saved_nacl) { 1352 pr_debug("Setting up new fc_loopid->se_nacl to new_se_nacl\n"); 1353 fc_loopid->se_nacl = new_se_nacl; 1354 if (qla_tgt_sess->se_sess != se_sess) 1355 qla_tgt_sess->se_sess = se_sess; 1356 if (nacl->qla_tgt_sess != qla_tgt_sess) 1357 nacl->qla_tgt_sess = qla_tgt_sess; 1358 return; 1359 } 1360 1361 if (nacl->qla_tgt_sess) { 1362 if (new_se_nacl == NULL) { 1363 pr_debug("Clearing nacl->qla_tgt_sess and fc_loopid->se_nacl\n"); 1364 fc_loopid->se_nacl = NULL; 1365 nacl->qla_tgt_sess = NULL; 1366 return; 1367 } 1368 1369 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_loopid->se_nacl\n"); 1370 fc_loopid->se_nacl = new_se_nacl; 1371 if (qla_tgt_sess->se_sess != se_sess) 1372 qla_tgt_sess->se_sess = se_sess; 1373 if (nacl->qla_tgt_sess != qla_tgt_sess) 1374 nacl->qla_tgt_sess = qla_tgt_sess; 1375 return; 1376 } 1377 1378 if (new_se_nacl == NULL) { 1379 pr_debug("Clearing fc_loopid->se_nacl\n"); 1380 fc_loopid->se_nacl = NULL; 1381 return; 1382 } 1383 1384 pr_debug("Replacing existing fc_loopid->se_nacl w/o active nacl->qla_tgt_sess\n"); 1385 fc_loopid->se_nacl = new_se_nacl; 1386 if (qla_tgt_sess->se_sess != se_sess) 1387 qla_tgt_sess->se_sess = se_sess; 1388 if (nacl->qla_tgt_sess != qla_tgt_sess) 1389 nacl->qla_tgt_sess = qla_tgt_sess; 1390 1391 pr_debug("Setup nacl->qla_tgt_sess %p by loop_id for se_nacl: %p, initiatorname: %s\n", 1392 nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname); 1393} 1394 1395/* 1396 * Should always be called with qla_hw_data->hardware_lock held. 1397 */ 1398static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *lport, 1399 struct tcm_qla2xxx_nacl *nacl, struct qla_tgt_sess *sess) 1400{ 1401 struct se_session *se_sess = sess->se_sess; 1402 unsigned char be_sid[3]; 1403 1404 be_sid[0] = sess->s_id.b.domain; 1405 be_sid[1] = sess->s_id.b.area; 1406 be_sid[2] = sess->s_id.b.al_pa; 1407 1408 tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess, 1409 sess, be_sid); 1410 tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess, 1411 sess, sess->loop_id); 1412} 1413 1414static void tcm_qla2xxx_free_session(struct qla_tgt_sess *sess) 1415{ 1416 struct qla_tgt *tgt = sess->tgt; 1417 struct qla_hw_data *ha = tgt->ha; 1418 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev); 1419 struct se_session *se_sess; 1420 struct se_node_acl *se_nacl; 1421 struct tcm_qla2xxx_lport *lport; 1422 struct tcm_qla2xxx_nacl *nacl; 1423 1424 BUG_ON(in_interrupt()); 1425 1426 se_sess = sess->se_sess; 1427 if (!se_sess) { 1428 pr_err("struct qla_tgt_sess->se_sess is NULL\n"); 1429 dump_stack(); 1430 return; 1431 } 1432 se_nacl = se_sess->se_node_acl; 1433 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1434 1435 lport = vha->vha_tgt.target_lport_ptr; 1436 if (!lport) { 1437 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1438 dump_stack(); 1439 return; 1440 } 1441 target_wait_for_sess_cmds(se_sess); 1442 1443 transport_deregister_session_configfs(sess->se_sess); 1444 transport_deregister_session(sess->se_sess); 1445} 1446 1447/* 1448 * Called via qlt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl() 1449 * to locate struct se_node_acl 1450 */ 1451static int tcm_qla2xxx_check_initiator_node_acl( 1452 scsi_qla_host_t *vha, 1453 unsigned char *fc_wwpn, 1454 void *qla_tgt_sess, 1455 uint8_t *s_id, 1456 uint16_t loop_id) 1457{ 1458 struct qla_hw_data *ha = vha->hw; 1459 struct tcm_qla2xxx_lport *lport; 1460 struct tcm_qla2xxx_tpg *tpg; 1461 struct tcm_qla2xxx_nacl *nacl; 1462 struct se_portal_group *se_tpg; 1463 struct se_node_acl *se_nacl; 1464 struct se_session *se_sess; 1465 struct qla_tgt_sess *sess = qla_tgt_sess; 1466 unsigned char port_name[36]; 1467 unsigned long flags; 1468 1469 lport = vha->vha_tgt.target_lport_ptr; 1470 if (!lport) { 1471 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1472 dump_stack(); 1473 return -EINVAL; 1474 } 1475 /* 1476 * Locate the TPG=1 reference.. 1477 */ 1478 tpg = lport->tpg_1; 1479 if (!tpg) { 1480 pr_err("Unable to lcoate struct tcm_qla2xxx_lport->tpg_1\n"); 1481 return -EINVAL; 1482 } 1483 se_tpg = &tpg->se_tpg; 1484 1485 se_sess = transport_init_session(TARGET_PROT_NORMAL); 1486 if (IS_ERR(se_sess)) { 1487 pr_err("Unable to initialize struct se_session\n"); 1488 return PTR_ERR(se_sess); 1489 } 1490 /* 1491 * Format the FCP Initiator port_name into colon seperated values to 1492 * match the format by tcm_qla2xxx explict ConfigFS NodeACLs. 1493 */ 1494 memset(&port_name, 0, 36); 1495 snprintf(port_name, 36, "%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x", 1496 fc_wwpn[0], fc_wwpn[1], fc_wwpn[2], fc_wwpn[3], fc_wwpn[4], 1497 fc_wwpn[5], fc_wwpn[6], fc_wwpn[7]); 1498 /* 1499 * Locate our struct se_node_acl either from an explict NodeACL created 1500 * via ConfigFS, or via running in TPG demo mode. 1501 */ 1502 se_sess->se_node_acl = core_tpg_check_initiator_node_acl(se_tpg, 1503 port_name); 1504 if (!se_sess->se_node_acl) { 1505 transport_free_session(se_sess); 1506 return -EINVAL; 1507 } 1508 se_nacl = se_sess->se_node_acl; 1509 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1510 /* 1511 * And now setup the new se_nacl and session pointers into our HW lport 1512 * mappings for fabric S_ID and LOOP_ID. 1513 */ 1514 spin_lock_irqsave(&ha->hardware_lock, flags); 1515 tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl, se_sess, 1516 qla_tgt_sess, s_id); 1517 tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl, se_sess, 1518 qla_tgt_sess, loop_id); 1519 spin_unlock_irqrestore(&ha->hardware_lock, flags); 1520 /* 1521 * Finally register the new FC Nexus with TCM 1522 */ 1523 __transport_register_session(se_nacl->se_tpg, se_nacl, se_sess, sess); 1524 1525 return 0; 1526} 1527 1528static void tcm_qla2xxx_update_sess(struct qla_tgt_sess *sess, port_id_t s_id, 1529 uint16_t loop_id, bool conf_compl_supported) 1530{ 1531 struct qla_tgt *tgt = sess->tgt; 1532 struct qla_hw_data *ha = tgt->ha; 1533 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev); 1534 struct tcm_qla2xxx_lport *lport = vha->vha_tgt.target_lport_ptr; 1535 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl; 1536 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl, 1537 struct tcm_qla2xxx_nacl, se_node_acl); 1538 u32 key; 1539 1540 1541 if (sess->loop_id != loop_id || sess->s_id.b24 != s_id.b24) 1542 pr_info("Updating session %p from port %8phC loop_id %d -> %d s_id %x:%x:%x -> %x:%x:%x\n", 1543 sess, sess->port_name, 1544 sess->loop_id, loop_id, sess->s_id.b.domain, 1545 sess->s_id.b.area, sess->s_id.b.al_pa, s_id.b.domain, 1546 s_id.b.area, s_id.b.al_pa); 1547 1548 if (sess->loop_id != loop_id) { 1549 /* 1550 * Because we can shuffle loop IDs around and we 1551 * update different sessions non-atomically, we might 1552 * have overwritten this session's old loop ID 1553 * already, and we might end up overwriting some other 1554 * session that will be updated later. So we have to 1555 * be extra careful and we can't warn about those things... 1556 */ 1557 if (lport->lport_loopid_map[sess->loop_id].se_nacl == se_nacl) 1558 lport->lport_loopid_map[sess->loop_id].se_nacl = NULL; 1559 1560 lport->lport_loopid_map[loop_id].se_nacl = se_nacl; 1561 1562 sess->loop_id = loop_id; 1563 } 1564 1565 if (sess->s_id.b24 != s_id.b24) { 1566 key = (((u32) sess->s_id.b.domain << 16) | 1567 ((u32) sess->s_id.b.area << 8) | 1568 ((u32) sess->s_id.b.al_pa)); 1569 1570 if (btree_lookup32(&lport->lport_fcport_map, key)) 1571 WARN(btree_remove32(&lport->lport_fcport_map, key) != se_nacl, 1572 "Found wrong se_nacl when updating s_id %x:%x:%x\n", 1573 sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa); 1574 else 1575 WARN(1, "No lport_fcport_map entry for s_id %x:%x:%x\n", 1576 sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa); 1577 1578 key = (((u32) s_id.b.domain << 16) | 1579 ((u32) s_id.b.area << 8) | 1580 ((u32) s_id.b.al_pa)); 1581 1582 if (btree_lookup32(&lport->lport_fcport_map, key)) { 1583 WARN(1, "Already have lport_fcport_map entry for s_id %x:%x:%x\n", 1584 s_id.b.domain, s_id.b.area, s_id.b.al_pa); 1585 btree_update32(&lport->lport_fcport_map, key, se_nacl); 1586 } else { 1587 btree_insert32(&lport->lport_fcport_map, key, se_nacl, GFP_ATOMIC); 1588 } 1589 1590 sess->s_id = s_id; 1591 nacl->nport_id = key; 1592 } 1593 1594 sess->conf_compl_supported = conf_compl_supported; 1595} 1596 1597/* 1598 * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path. 1599 */ 1600static struct qla_tgt_func_tmpl tcm_qla2xxx_template = { 1601 .handle_cmd = tcm_qla2xxx_handle_cmd, 1602 .handle_data = tcm_qla2xxx_handle_data, 1603 .handle_tmr = tcm_qla2xxx_handle_tmr, 1604 .free_cmd = tcm_qla2xxx_free_cmd, 1605 .free_mcmd = tcm_qla2xxx_free_mcmd, 1606 .free_session = tcm_qla2xxx_free_session, 1607 .update_sess = tcm_qla2xxx_update_sess, 1608 .check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl, 1609 .find_sess_by_s_id = tcm_qla2xxx_find_sess_by_s_id, 1610 .find_sess_by_loop_id = tcm_qla2xxx_find_sess_by_loop_id, 1611 .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map, 1612 .put_sess = tcm_qla2xxx_put_sess, 1613 .shutdown_sess = tcm_qla2xxx_shutdown_sess, 1614}; 1615 1616static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport) 1617{ 1618 int rc; 1619 1620 rc = btree_init32(&lport->lport_fcport_map); 1621 if (rc) { 1622 pr_err("Unable to initialize lport->lport_fcport_map btree\n"); 1623 return rc; 1624 } 1625 1626 lport->lport_loopid_map = vmalloc(sizeof(struct tcm_qla2xxx_fc_loopid) * 1627 65536); 1628 if (!lport->lport_loopid_map) { 1629 pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n", 1630 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536); 1631 btree_destroy32(&lport->lport_fcport_map); 1632 return -ENOMEM; 1633 } 1634 memset(lport->lport_loopid_map, 0, sizeof(struct tcm_qla2xxx_fc_loopid) 1635 * 65536); 1636 pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n", 1637 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536); 1638 return 0; 1639} 1640 1641static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha, 1642 void *target_lport_ptr, 1643 u64 npiv_wwpn, u64 npiv_wwnn) 1644{ 1645 struct qla_hw_data *ha = vha->hw; 1646 struct tcm_qla2xxx_lport *lport = 1647 (struct tcm_qla2xxx_lport *)target_lport_ptr; 1648 /* 1649 * Setup tgt_ops, local pointer to vha and target_lport_ptr 1650 */ 1651 ha->tgt.tgt_ops = &tcm_qla2xxx_template; 1652 vha->vha_tgt.target_lport_ptr = target_lport_ptr; 1653 lport->qla_vha = vha; 1654 1655 return 0; 1656} 1657 1658static struct se_wwn *tcm_qla2xxx_make_lport( 1659 struct target_fabric_configfs *tf, 1660 struct config_group *group, 1661 const char *name) 1662{ 1663 struct tcm_qla2xxx_lport *lport; 1664 u64 wwpn; 1665 int ret = -ENODEV; 1666 1667 if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0) 1668 return ERR_PTR(-EINVAL); 1669 1670 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL); 1671 if (!lport) { 1672 pr_err("Unable to allocate struct tcm_qla2xxx_lport\n"); 1673 return ERR_PTR(-ENOMEM); 1674 } 1675 lport->lport_wwpn = wwpn; 1676 tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN, 1677 wwpn); 1678 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) wwpn); 1679 1680 ret = tcm_qla2xxx_init_lport(lport); 1681 if (ret != 0) 1682 goto out; 1683 1684 ret = qlt_lport_register(lport, wwpn, 0, 0, 1685 tcm_qla2xxx_lport_register_cb); 1686 if (ret != 0) 1687 goto out_lport; 1688 1689 return &lport->lport_wwn; 1690out_lport: 1691 vfree(lport->lport_loopid_map); 1692 btree_destroy32(&lport->lport_fcport_map); 1693out: 1694 kfree(lport); 1695 return ERR_PTR(ret); 1696} 1697 1698static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn) 1699{ 1700 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1701 struct tcm_qla2xxx_lport, lport_wwn); 1702 struct scsi_qla_host *vha = lport->qla_vha; 1703 struct se_node_acl *node; 1704 u32 key = 0; 1705 1706 /* 1707 * Call into qla2x_target.c LLD logic to complete the 1708 * shutdown of struct qla_tgt after the call to 1709 * qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above.. 1710 */ 1711 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stopped) 1712 qlt_stop_phase2(vha->vha_tgt.qla_tgt); 1713 1714 qlt_lport_deregister(vha); 1715 1716 vfree(lport->lport_loopid_map); 1717 btree_for_each_safe32(&lport->lport_fcport_map, key, node) 1718 btree_remove32(&lport->lport_fcport_map, key); 1719 btree_destroy32(&lport->lport_fcport_map); 1720 kfree(lport); 1721} 1722 1723static int tcm_qla2xxx_lport_register_npiv_cb(struct scsi_qla_host *base_vha, 1724 void *target_lport_ptr, 1725 u64 npiv_wwpn, u64 npiv_wwnn) 1726{ 1727 struct fc_vport *vport; 1728 struct Scsi_Host *sh = base_vha->host; 1729 struct scsi_qla_host *npiv_vha; 1730 struct tcm_qla2xxx_lport *lport = 1731 (struct tcm_qla2xxx_lport *)target_lport_ptr; 1732 struct tcm_qla2xxx_lport *base_lport = 1733 (struct tcm_qla2xxx_lport *)base_vha->vha_tgt.target_lport_ptr; 1734 struct tcm_qla2xxx_tpg *base_tpg; 1735 struct fc_vport_identifiers vport_id; 1736 1737 if (!qla_tgt_mode_enabled(base_vha)) { 1738 pr_err("qla2xxx base_vha not enabled for target mode\n"); 1739 return -EPERM; 1740 } 1741 1742 if (!base_lport || !base_lport->tpg_1 || 1743 !atomic_read(&base_lport->tpg_1->lport_tpg_enabled)) { 1744 pr_err("qla2xxx base_lport or tpg_1 not available\n"); 1745 return -EPERM; 1746 } 1747 base_tpg = base_lport->tpg_1; 1748 1749 memset(&vport_id, 0, sizeof(vport_id)); 1750 vport_id.port_name = npiv_wwpn; 1751 vport_id.node_name = npiv_wwnn; 1752 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR; 1753 vport_id.vport_type = FC_PORTTYPE_NPIV; 1754 vport_id.disable = false; 1755 1756 vport = fc_vport_create(sh, 0, &vport_id); 1757 if (!vport) { 1758 pr_err("fc_vport_create failed for qla2xxx_npiv\n"); 1759 return -ENODEV; 1760 } 1761 /* 1762 * Setup local pointer to NPIV vhba + target_lport_ptr 1763 */ 1764 npiv_vha = (struct scsi_qla_host *)vport->dd_data; 1765 npiv_vha->vha_tgt.target_lport_ptr = target_lport_ptr; 1766 lport->qla_vha = npiv_vha; 1767 scsi_host_get(npiv_vha->host); 1768 return 0; 1769} 1770 1771 1772static struct se_wwn *tcm_qla2xxx_npiv_make_lport( 1773 struct target_fabric_configfs *tf, 1774 struct config_group *group, 1775 const char *name) 1776{ 1777 struct tcm_qla2xxx_lport *lport; 1778 u64 phys_wwpn, npiv_wwpn, npiv_wwnn; 1779 char *p, tmp[128]; 1780 int ret; 1781 1782 snprintf(tmp, 128, "%s", name); 1783 1784 p = strchr(tmp, '@'); 1785 if (!p) { 1786 pr_err("Unable to locate NPIV '@' seperator\n"); 1787 return ERR_PTR(-EINVAL); 1788 } 1789 *p++ = '\0'; 1790 1791 if (tcm_qla2xxx_parse_wwn(tmp, &phys_wwpn, 1) < 0) 1792 return ERR_PTR(-EINVAL); 1793 1794 if (tcm_qla2xxx_npiv_parse_wwn(p, strlen(p)+1, 1795 &npiv_wwpn, &npiv_wwnn) < 0) 1796 return ERR_PTR(-EINVAL); 1797 1798 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL); 1799 if (!lport) { 1800 pr_err("Unable to allocate struct tcm_qla2xxx_lport for NPIV\n"); 1801 return ERR_PTR(-ENOMEM); 1802 } 1803 lport->lport_npiv_wwpn = npiv_wwpn; 1804 lport->lport_npiv_wwnn = npiv_wwnn; 1805 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) npiv_wwpn); 1806 1807 ret = tcm_qla2xxx_init_lport(lport); 1808 if (ret != 0) 1809 goto out; 1810 1811 ret = qlt_lport_register(lport, phys_wwpn, npiv_wwpn, npiv_wwnn, 1812 tcm_qla2xxx_lport_register_npiv_cb); 1813 if (ret != 0) 1814 goto out_lport; 1815 1816 return &lport->lport_wwn; 1817out_lport: 1818 vfree(lport->lport_loopid_map); 1819 btree_destroy32(&lport->lport_fcport_map); 1820out: 1821 kfree(lport); 1822 return ERR_PTR(ret); 1823} 1824 1825static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn) 1826{ 1827 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1828 struct tcm_qla2xxx_lport, lport_wwn); 1829 struct scsi_qla_host *npiv_vha = lport->qla_vha; 1830 struct qla_hw_data *ha = npiv_vha->hw; 1831 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 1832 1833 scsi_host_put(npiv_vha->host); 1834 /* 1835 * Notify libfc that we want to release the vha->fc_vport 1836 */ 1837 fc_vport_terminate(npiv_vha->fc_vport); 1838 scsi_host_put(base_vha->host); 1839 kfree(lport); 1840} 1841 1842 1843static ssize_t tcm_qla2xxx_wwn_show_attr_version( 1844 struct target_fabric_configfs *tf, 1845 char *page) 1846{ 1847 return sprintf(page, 1848 "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s on " 1849 UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname, 1850 utsname()->machine); 1851} 1852 1853TF_WWN_ATTR_RO(tcm_qla2xxx, version); 1854 1855static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = { 1856 &tcm_qla2xxx_wwn_version.attr, 1857 NULL, 1858}; 1859 1860static struct target_core_fabric_ops tcm_qla2xxx_ops = { 1861 .get_fabric_name = tcm_qla2xxx_get_fabric_name, 1862 .get_fabric_proto_ident = tcm_qla2xxx_get_fabric_proto_ident, 1863 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn, 1864 .tpg_get_tag = tcm_qla2xxx_get_tag, 1865 .tpg_get_default_depth = tcm_qla2xxx_get_default_depth, 1866 .tpg_get_pr_transport_id = tcm_qla2xxx_get_pr_transport_id, 1867 .tpg_get_pr_transport_id_len = tcm_qla2xxx_get_pr_transport_id_len, 1868 .tpg_parse_pr_out_transport_id = tcm_qla2xxx_parse_pr_out_transport_id, 1869 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode, 1870 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache, 1871 .tpg_check_demo_mode_write_protect = 1872 tcm_qla2xxx_check_demo_write_protect, 1873 .tpg_check_prod_mode_write_protect = 1874 tcm_qla2xxx_check_prod_write_protect, 1875 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only, 1876 .tpg_alloc_fabric_acl = tcm_qla2xxx_alloc_fabric_acl, 1877 .tpg_release_fabric_acl = tcm_qla2xxx_release_fabric_acl, 1878 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index, 1879 .check_stop_free = tcm_qla2xxx_check_stop_free, 1880 .release_cmd = tcm_qla2xxx_release_cmd, 1881 .put_session = tcm_qla2xxx_put_session, 1882 .shutdown_session = tcm_qla2xxx_shutdown_session, 1883 .close_session = tcm_qla2xxx_close_session, 1884 .sess_get_index = tcm_qla2xxx_sess_get_index, 1885 .sess_get_initiator_sid = NULL, 1886 .write_pending = tcm_qla2xxx_write_pending, 1887 .write_pending_status = tcm_qla2xxx_write_pending_status, 1888 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs, 1889 .get_task_tag = tcm_qla2xxx_get_task_tag, 1890 .get_cmd_state = tcm_qla2xxx_get_cmd_state, 1891 .queue_data_in = tcm_qla2xxx_queue_data_in, 1892 .queue_status = tcm_qla2xxx_queue_status, 1893 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp, 1894 .aborted_task = tcm_qla2xxx_aborted_task, 1895 /* 1896 * Setup function pointers for generic logic in 1897 * target_core_fabric_configfs.c 1898 */ 1899 .fabric_make_wwn = tcm_qla2xxx_make_lport, 1900 .fabric_drop_wwn = tcm_qla2xxx_drop_lport, 1901 .fabric_make_tpg = tcm_qla2xxx_make_tpg, 1902 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg, 1903 .fabric_post_link = NULL, 1904 .fabric_pre_unlink = NULL, 1905 .fabric_make_np = NULL, 1906 .fabric_drop_np = NULL, 1907 .fabric_make_nodeacl = tcm_qla2xxx_make_nodeacl, 1908 .fabric_drop_nodeacl = tcm_qla2xxx_drop_nodeacl, 1909}; 1910 1911static struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = { 1912 .get_fabric_name = tcm_qla2xxx_npiv_get_fabric_name, 1913 .get_fabric_proto_ident = tcm_qla2xxx_get_fabric_proto_ident, 1914 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn, 1915 .tpg_get_tag = tcm_qla2xxx_get_tag, 1916 .tpg_get_default_depth = tcm_qla2xxx_get_default_depth, 1917 .tpg_get_pr_transport_id = tcm_qla2xxx_get_pr_transport_id, 1918 .tpg_get_pr_transport_id_len = tcm_qla2xxx_get_pr_transport_id_len, 1919 .tpg_parse_pr_out_transport_id = tcm_qla2xxx_parse_pr_out_transport_id, 1920 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode, 1921 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache, 1922 .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_demo_mode, 1923 .tpg_check_prod_mode_write_protect = 1924 tcm_qla2xxx_check_prod_write_protect, 1925 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only, 1926 .tpg_alloc_fabric_acl = tcm_qla2xxx_alloc_fabric_acl, 1927 .tpg_release_fabric_acl = tcm_qla2xxx_release_fabric_acl, 1928 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index, 1929 .check_stop_free = tcm_qla2xxx_check_stop_free, 1930 .release_cmd = tcm_qla2xxx_release_cmd, 1931 .put_session = tcm_qla2xxx_put_session, 1932 .shutdown_session = tcm_qla2xxx_shutdown_session, 1933 .close_session = tcm_qla2xxx_close_session, 1934 .sess_get_index = tcm_qla2xxx_sess_get_index, 1935 .sess_get_initiator_sid = NULL, 1936 .write_pending = tcm_qla2xxx_write_pending, 1937 .write_pending_status = tcm_qla2xxx_write_pending_status, 1938 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs, 1939 .get_task_tag = tcm_qla2xxx_get_task_tag, 1940 .get_cmd_state = tcm_qla2xxx_get_cmd_state, 1941 .queue_data_in = tcm_qla2xxx_queue_data_in, 1942 .queue_status = tcm_qla2xxx_queue_status, 1943 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp, 1944 .aborted_task = tcm_qla2xxx_aborted_task, 1945 /* 1946 * Setup function pointers for generic logic in 1947 * target_core_fabric_configfs.c 1948 */ 1949 .fabric_make_wwn = tcm_qla2xxx_npiv_make_lport, 1950 .fabric_drop_wwn = tcm_qla2xxx_npiv_drop_lport, 1951 .fabric_make_tpg = tcm_qla2xxx_npiv_make_tpg, 1952 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg, 1953 .fabric_post_link = NULL, 1954 .fabric_pre_unlink = NULL, 1955 .fabric_make_np = NULL, 1956 .fabric_drop_np = NULL, 1957 .fabric_make_nodeacl = tcm_qla2xxx_make_nodeacl, 1958 .fabric_drop_nodeacl = tcm_qla2xxx_drop_nodeacl, 1959}; 1960 1961static int tcm_qla2xxx_register_configfs(void) 1962{ 1963 struct target_fabric_configfs *fabric, *npiv_fabric; 1964 int ret; 1965 1966 pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on " 1967 UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname, 1968 utsname()->machine); 1969 /* 1970 * Register the top level struct config_item_type with TCM core 1971 */ 1972 fabric = target_fabric_configfs_init(THIS_MODULE, "qla2xxx"); 1973 if (IS_ERR(fabric)) { 1974 pr_err("target_fabric_configfs_init() failed\n"); 1975 return PTR_ERR(fabric); 1976 } 1977 /* 1978 * Setup fabric->tf_ops from our local tcm_qla2xxx_ops 1979 */ 1980 fabric->tf_ops = tcm_qla2xxx_ops; 1981 /* 1982 * Setup default attribute lists for various fabric->tf_cit_tmpl 1983 */ 1984 fabric->tf_cit_tmpl.tfc_wwn_cit.ct_attrs = tcm_qla2xxx_wwn_attrs; 1985 fabric->tf_cit_tmpl.tfc_tpg_base_cit.ct_attrs = tcm_qla2xxx_tpg_attrs; 1986 fabric->tf_cit_tmpl.tfc_tpg_attrib_cit.ct_attrs = 1987 tcm_qla2xxx_tpg_attrib_attrs; 1988 fabric->tf_cit_tmpl.tfc_tpg_param_cit.ct_attrs = NULL; 1989 fabric->tf_cit_tmpl.tfc_tpg_np_base_cit.ct_attrs = NULL; 1990 fabric->tf_cit_tmpl.tfc_tpg_nacl_base_cit.ct_attrs = NULL; 1991 fabric->tf_cit_tmpl.tfc_tpg_nacl_attrib_cit.ct_attrs = NULL; 1992 fabric->tf_cit_tmpl.tfc_tpg_nacl_auth_cit.ct_attrs = NULL; 1993 fabric->tf_cit_tmpl.tfc_tpg_nacl_param_cit.ct_attrs = NULL; 1994 /* 1995 * Register the fabric for use within TCM 1996 */ 1997 ret = target_fabric_configfs_register(fabric); 1998 if (ret < 0) { 1999 pr_err("target_fabric_configfs_register() failed for TCM_QLA2XXX\n"); 2000 return ret; 2001 } 2002 /* 2003 * Setup our local pointer to *fabric 2004 */ 2005 tcm_qla2xxx_fabric_configfs = fabric; 2006 pr_debug("TCM_QLA2XXX[0] - Set fabric -> tcm_qla2xxx_fabric_configfs\n"); 2007 2008 /* 2009 * Register the top level struct config_item_type for NPIV with TCM core 2010 */ 2011 npiv_fabric = target_fabric_configfs_init(THIS_MODULE, "qla2xxx_npiv"); 2012 if (IS_ERR(npiv_fabric)) { 2013 pr_err("target_fabric_configfs_init() failed\n"); 2014 ret = PTR_ERR(npiv_fabric); 2015 goto out_fabric; 2016 } 2017 /* 2018 * Setup fabric->tf_ops from our local tcm_qla2xxx_npiv_ops 2019 */ 2020 npiv_fabric->tf_ops = tcm_qla2xxx_npiv_ops; 2021 /* 2022 * Setup default attribute lists for various npiv_fabric->tf_cit_tmpl 2023 */ 2024 npiv_fabric->tf_cit_tmpl.tfc_wwn_cit.ct_attrs = tcm_qla2xxx_wwn_attrs; 2025 npiv_fabric->tf_cit_tmpl.tfc_tpg_base_cit.ct_attrs = 2026 tcm_qla2xxx_npiv_tpg_attrs; 2027 npiv_fabric->tf_cit_tmpl.tfc_tpg_attrib_cit.ct_attrs = NULL; 2028 npiv_fabric->tf_cit_tmpl.tfc_tpg_param_cit.ct_attrs = NULL; 2029 npiv_fabric->tf_cit_tmpl.tfc_tpg_np_base_cit.ct_attrs = NULL; 2030 npiv_fabric->tf_cit_tmpl.tfc_tpg_nacl_base_cit.ct_attrs = NULL; 2031 npiv_fabric->tf_cit_tmpl.tfc_tpg_nacl_attrib_cit.ct_attrs = NULL; 2032 npiv_fabric->tf_cit_tmpl.tfc_tpg_nacl_auth_cit.ct_attrs = NULL; 2033 npiv_fabric->tf_cit_tmpl.tfc_tpg_nacl_param_cit.ct_attrs = NULL; 2034 /* 2035 * Register the npiv_fabric for use within TCM 2036 */ 2037 ret = target_fabric_configfs_register(npiv_fabric); 2038 if (ret < 0) { 2039 pr_err("target_fabric_configfs_register() failed for TCM_QLA2XXX\n"); 2040 goto out_fabric; 2041 } 2042 /* 2043 * Setup our local pointer to *npiv_fabric 2044 */ 2045 tcm_qla2xxx_npiv_fabric_configfs = npiv_fabric; 2046 pr_debug("TCM_QLA2XXX[0] - Set fabric -> tcm_qla2xxx_npiv_fabric_configfs\n"); 2047 2048 tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free", 2049 WQ_MEM_RECLAIM, 0); 2050 if (!tcm_qla2xxx_free_wq) { 2051 ret = -ENOMEM; 2052 goto out_fabric_npiv; 2053 } 2054 2055 tcm_qla2xxx_cmd_wq = alloc_workqueue("tcm_qla2xxx_cmd", 0, 0); 2056 if (!tcm_qla2xxx_cmd_wq) { 2057 ret = -ENOMEM; 2058 goto out_free_wq; 2059 } 2060 2061 return 0; 2062 2063out_free_wq: 2064 destroy_workqueue(tcm_qla2xxx_free_wq); 2065out_fabric_npiv: 2066 target_fabric_configfs_deregister(tcm_qla2xxx_npiv_fabric_configfs); 2067out_fabric: 2068 target_fabric_configfs_deregister(tcm_qla2xxx_fabric_configfs); 2069 return ret; 2070} 2071 2072static void tcm_qla2xxx_deregister_configfs(void) 2073{ 2074 destroy_workqueue(tcm_qla2xxx_cmd_wq); 2075 destroy_workqueue(tcm_qla2xxx_free_wq); 2076 2077 target_fabric_configfs_deregister(tcm_qla2xxx_fabric_configfs); 2078 tcm_qla2xxx_fabric_configfs = NULL; 2079 pr_debug("TCM_QLA2XXX[0] - Cleared tcm_qla2xxx_fabric_configfs\n"); 2080 2081 target_fabric_configfs_deregister(tcm_qla2xxx_npiv_fabric_configfs); 2082 tcm_qla2xxx_npiv_fabric_configfs = NULL; 2083 pr_debug("TCM_QLA2XXX[0] - Cleared tcm_qla2xxx_npiv_fabric_configfs\n"); 2084} 2085 2086static int __init tcm_qla2xxx_init(void) 2087{ 2088 int ret; 2089 2090 ret = tcm_qla2xxx_register_configfs(); 2091 if (ret < 0) 2092 return ret; 2093 2094 return 0; 2095} 2096 2097static void __exit tcm_qla2xxx_exit(void) 2098{ 2099 tcm_qla2xxx_deregister_configfs(); 2100} 2101 2102MODULE_DESCRIPTION("TCM QLA2XXX series NPIV enabled fabric driver"); 2103MODULE_LICENSE("GPL"); 2104module_init(tcm_qla2xxx_init); 2105module_exit(tcm_qla2xxx_exit); 2106