tcm_qla2xxx.c revision f4c24db1b7ad0ce84409e15744d26c6f86a96840
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 cmd->prot_sg_cnt = se_cmd->t_prot_nents; 476 cmd->prot_sg = se_cmd->t_prot_sg; 477 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size; 478 se_cmd->pi_err = 0; 479 480 /* 481 * qla_target.c:qlt_rdy_to_xfer() will call pci_map_sg() to setup 482 * the SGL mappings into PCIe memory for incoming FCP WRITE data. 483 */ 484 return qlt_rdy_to_xfer(cmd); 485} 486 487static int tcm_qla2xxx_write_pending_status(struct se_cmd *se_cmd) 488{ 489 unsigned long flags; 490 /* 491 * Check for WRITE_PENDING status to determine if we need to wait for 492 * CTIO aborts to be posted via hardware in tcm_qla2xxx_handle_data(). 493 */ 494 spin_lock_irqsave(&se_cmd->t_state_lock, flags); 495 if (se_cmd->t_state == TRANSPORT_WRITE_PENDING || 496 se_cmd->t_state == TRANSPORT_COMPLETE_QF_WP) { 497 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags); 498 wait_for_completion_timeout(&se_cmd->t_transport_stop_comp, 499 3000); 500 return 0; 501 } 502 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags); 503 504 return 0; 505} 506 507static void tcm_qla2xxx_set_default_node_attrs(struct se_node_acl *nacl) 508{ 509 return; 510} 511 512static u32 tcm_qla2xxx_get_task_tag(struct se_cmd *se_cmd) 513{ 514 struct qla_tgt_cmd *cmd = container_of(se_cmd, 515 struct qla_tgt_cmd, se_cmd); 516 517 return cmd->tag; 518} 519 520static int tcm_qla2xxx_get_cmd_state(struct se_cmd *se_cmd) 521{ 522 return 0; 523} 524 525/* 526 * Called from process context in qla_target.c:qlt_do_work() code 527 */ 528static int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd, 529 unsigned char *cdb, uint32_t data_length, int fcp_task_attr, 530 int data_dir, int bidi) 531{ 532 struct se_cmd *se_cmd = &cmd->se_cmd; 533 struct se_session *se_sess; 534 struct qla_tgt_sess *sess; 535 int flags = TARGET_SCF_ACK_KREF; 536 537 if (bidi) 538 flags |= TARGET_SCF_BIDI_OP; 539 540 sess = cmd->sess; 541 if (!sess) { 542 pr_err("Unable to locate struct qla_tgt_sess from qla_tgt_cmd\n"); 543 return -EINVAL; 544 } 545 546 se_sess = sess->se_sess; 547 if (!se_sess) { 548 pr_err("Unable to locate active struct se_session\n"); 549 return -EINVAL; 550 } 551 552 return target_submit_cmd(se_cmd, se_sess, cdb, &cmd->sense_buffer[0], 553 cmd->unpacked_lun, data_length, fcp_task_attr, 554 data_dir, flags); 555} 556 557static void tcm_qla2xxx_handle_data_work(struct work_struct *work) 558{ 559 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 560 561 /* 562 * Ensure that the complete FCP WRITE payload has been received. 563 * Otherwise return an exception via CHECK_CONDITION status. 564 */ 565 if (!cmd->write_data_transferred) { 566 /* 567 * Check if se_cmd has already been aborted via LUN_RESET, and 568 * waiting upon completion in tcm_qla2xxx_write_pending_status() 569 */ 570 if (cmd->se_cmd.transport_state & CMD_T_ABORTED) { 571 complete(&cmd->se_cmd.t_transport_stop_comp); 572 return; 573 } 574 575 if (cmd->se_cmd.pi_err) 576 transport_generic_request_failure(&cmd->se_cmd, 577 cmd->se_cmd.pi_err); 578 else 579 transport_generic_request_failure(&cmd->se_cmd, 580 TCM_CHECK_CONDITION_ABORT_CMD); 581 582 return; 583 } 584 585 return target_execute_cmd(&cmd->se_cmd); 586} 587 588/* 589 * Called from qla_target.c:qlt_do_ctio_completion() 590 */ 591static void tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd) 592{ 593 INIT_WORK(&cmd->work, tcm_qla2xxx_handle_data_work); 594 queue_work(tcm_qla2xxx_free_wq, &cmd->work); 595} 596 597static void tcm_qla2xxx_handle_dif_work(struct work_struct *work) 598{ 599 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 600 601 /* take an extra kref to prevent cmd free too early. 602 * need to wait for SCSI status/check condition to 603 * finish responding generate by transport_generic_request_failure. 604 */ 605 kref_get(&cmd->se_cmd.cmd_kref); 606 transport_generic_request_failure(&cmd->se_cmd, cmd->se_cmd.pi_err); 607} 608 609/* 610 * Called from qla_target.c:qlt_do_ctio_completion() 611 */ 612static void tcm_qla2xxx_handle_dif_err(struct qla_tgt_cmd *cmd) 613{ 614 INIT_WORK(&cmd->work, tcm_qla2xxx_handle_dif_work); 615 queue_work(tcm_qla2xxx_free_wq, &cmd->work); 616} 617 618/* 619 * Called from qla_target.c:qlt_issue_task_mgmt() 620 */ 621static int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *mcmd, uint32_t lun, 622 uint8_t tmr_func, uint32_t tag) 623{ 624 struct qla_tgt_sess *sess = mcmd->sess; 625 struct se_cmd *se_cmd = &mcmd->se_cmd; 626 627 return target_submit_tmr(se_cmd, sess->se_sess, NULL, lun, mcmd, 628 tmr_func, GFP_ATOMIC, tag, TARGET_SCF_ACK_KREF); 629} 630 631static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd) 632{ 633 struct qla_tgt_cmd *cmd = container_of(se_cmd, 634 struct qla_tgt_cmd, se_cmd); 635 636 cmd->bufflen = se_cmd->data_length; 637 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd); 638 cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED); 639 640 cmd->sg_cnt = se_cmd->t_data_nents; 641 cmd->sg = se_cmd->t_data_sg; 642 cmd->offset = 0; 643 644 cmd->prot_sg_cnt = se_cmd->t_prot_nents; 645 cmd->prot_sg = se_cmd->t_prot_sg; 646 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size; 647 se_cmd->pi_err = 0; 648 649 /* 650 * Now queue completed DATA_IN the qla2xxx LLD and response ring 651 */ 652 return qlt_xmit_response(cmd, QLA_TGT_XMIT_DATA|QLA_TGT_XMIT_STATUS, 653 se_cmd->scsi_status); 654} 655 656static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd) 657{ 658 struct qla_tgt_cmd *cmd = container_of(se_cmd, 659 struct qla_tgt_cmd, se_cmd); 660 int xmit_type = QLA_TGT_XMIT_STATUS; 661 662 cmd->bufflen = se_cmd->data_length; 663 cmd->sg = NULL; 664 cmd->sg_cnt = 0; 665 cmd->offset = 0; 666 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd); 667 cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED); 668 669 if (se_cmd->data_direction == DMA_FROM_DEVICE) { 670 /* 671 * For FCP_READ with CHECK_CONDITION status, clear cmd->bufflen 672 * for qla_tgt_xmit_response LLD code 673 */ 674 if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) { 675 se_cmd->se_cmd_flags &= ~SCF_OVERFLOW_BIT; 676 se_cmd->residual_count = 0; 677 } 678 se_cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT; 679 se_cmd->residual_count += se_cmd->data_length; 680 681 cmd->bufflen = 0; 682 } 683 /* 684 * Now queue status response to qla2xxx LLD code and response ring 685 */ 686 return qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status); 687} 688 689static void tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd) 690{ 691 struct se_tmr_req *se_tmr = se_cmd->se_tmr_req; 692 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd, 693 struct qla_tgt_mgmt_cmd, se_cmd); 694 695 pr_debug("queue_tm_rsp: mcmd: %p func: 0x%02x response: 0x%02x\n", 696 mcmd, se_tmr->function, se_tmr->response); 697 /* 698 * Do translation between TCM TM response codes and 699 * QLA2xxx FC TM response codes. 700 */ 701 switch (se_tmr->response) { 702 case TMR_FUNCTION_COMPLETE: 703 mcmd->fc_tm_rsp = FC_TM_SUCCESS; 704 break; 705 case TMR_TASK_DOES_NOT_EXIST: 706 mcmd->fc_tm_rsp = FC_TM_BAD_CMD; 707 break; 708 case TMR_FUNCTION_REJECTED: 709 mcmd->fc_tm_rsp = FC_TM_REJECT; 710 break; 711 case TMR_LUN_DOES_NOT_EXIST: 712 default: 713 mcmd->fc_tm_rsp = FC_TM_FAILED; 714 break; 715 } 716 /* 717 * Queue the TM response to QLA2xxx LLD to build a 718 * CTIO response packet. 719 */ 720 qlt_xmit_tm_rsp(mcmd); 721} 722 723static void tcm_qla2xxx_aborted_task(struct se_cmd *se_cmd) 724{ 725 struct qla_tgt_cmd *cmd = container_of(se_cmd, 726 struct qla_tgt_cmd, se_cmd); 727 struct scsi_qla_host *vha = cmd->vha; 728 struct qla_hw_data *ha = vha->hw; 729 730 if (!cmd->sg_mapped) 731 return; 732 733 pci_unmap_sg(ha->pdev, cmd->sg, cmd->sg_cnt, cmd->dma_data_direction); 734 cmd->sg_mapped = 0; 735} 736 737/* Local pointer to allocated TCM configfs fabric module */ 738struct target_fabric_configfs *tcm_qla2xxx_fabric_configfs; 739struct target_fabric_configfs *tcm_qla2xxx_npiv_fabric_configfs; 740 741static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *, 742 struct tcm_qla2xxx_nacl *, struct qla_tgt_sess *); 743/* 744 * Expected to be called with struct qla_hw_data->hardware_lock held 745 */ 746static void tcm_qla2xxx_clear_nacl_from_fcport_map(struct qla_tgt_sess *sess) 747{ 748 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl; 749 struct se_portal_group *se_tpg = se_nacl->se_tpg; 750 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn; 751 struct tcm_qla2xxx_lport *lport = container_of(se_wwn, 752 struct tcm_qla2xxx_lport, lport_wwn); 753 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl, 754 struct tcm_qla2xxx_nacl, se_node_acl); 755 void *node; 756 757 pr_debug("fc_rport domain: port_id 0x%06x\n", nacl->nport_id); 758 759 node = btree_remove32(&lport->lport_fcport_map, nacl->nport_id); 760 if (WARN_ON(node && (node != se_nacl))) { 761 /* 762 * The nacl no longer matches what we think it should be. 763 * Most likely a new dynamic acl has been added while 764 * someone dropped the hardware lock. It clearly is a 765 * bug elsewhere, but this bit can't make things worse. 766 */ 767 btree_insert32(&lport->lport_fcport_map, nacl->nport_id, 768 node, GFP_ATOMIC); 769 } 770 771 pr_debug("Removed from fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%06x\n", 772 se_nacl, nacl->nport_wwnn, nacl->nport_id); 773 /* 774 * Now clear the se_nacl and session pointers from our HW lport lookup 775 * table mapping for this initiator's fabric S_ID and LOOP_ID entries. 776 * 777 * This is done ahead of callbacks into tcm_qla2xxx_free_session() -> 778 * target_wait_for_sess_cmds() before the session waits for outstanding 779 * I/O to complete, to avoid a race between session shutdown execution 780 * and incoming ATIOs or TMRs picking up a stale se_node_act reference. 781 */ 782 tcm_qla2xxx_clear_sess_lookup(lport, nacl, sess); 783} 784 785static void tcm_qla2xxx_release_session(struct kref *kref) 786{ 787 struct se_session *se_sess = container_of(kref, 788 struct se_session, sess_kref); 789 790 qlt_unreg_sess(se_sess->fabric_sess_ptr); 791} 792 793static void tcm_qla2xxx_put_session(struct se_session *se_sess) 794{ 795 struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr; 796 struct qla_hw_data *ha = sess->vha->hw; 797 unsigned long flags; 798 799 spin_lock_irqsave(&ha->hardware_lock, flags); 800 kref_put(&se_sess->sess_kref, tcm_qla2xxx_release_session); 801 spin_unlock_irqrestore(&ha->hardware_lock, flags); 802} 803 804static void tcm_qla2xxx_put_sess(struct qla_tgt_sess *sess) 805{ 806 if (!sess) 807 return; 808 809 assert_spin_locked(&sess->vha->hw->hardware_lock); 810 kref_put(&sess->se_sess->sess_kref, tcm_qla2xxx_release_session); 811} 812 813static void tcm_qla2xxx_shutdown_sess(struct qla_tgt_sess *sess) 814{ 815 assert_spin_locked(&sess->vha->hw->hardware_lock); 816 target_sess_cmd_list_set_waiting(sess->se_sess); 817} 818 819static struct se_node_acl *tcm_qla2xxx_make_nodeacl( 820 struct se_portal_group *se_tpg, 821 struct config_group *group, 822 const char *name) 823{ 824 struct se_node_acl *se_nacl, *se_nacl_new; 825 struct tcm_qla2xxx_nacl *nacl; 826 u64 wwnn; 827 u32 qla2xxx_nexus_depth; 828 829 if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0) 830 return ERR_PTR(-EINVAL); 831 832 se_nacl_new = tcm_qla2xxx_alloc_fabric_acl(se_tpg); 833 if (!se_nacl_new) 834 return ERR_PTR(-ENOMEM); 835/* #warning FIXME: Hardcoded qla2xxx_nexus depth in tcm_qla2xxx_make_nodeacl */ 836 qla2xxx_nexus_depth = 1; 837 838 /* 839 * se_nacl_new may be released by core_tpg_add_initiator_node_acl() 840 * when converting a NodeACL from demo mode -> explict 841 */ 842 se_nacl = core_tpg_add_initiator_node_acl(se_tpg, se_nacl_new, 843 name, qla2xxx_nexus_depth); 844 if (IS_ERR(se_nacl)) { 845 tcm_qla2xxx_release_fabric_acl(se_tpg, se_nacl_new); 846 return se_nacl; 847 } 848 /* 849 * Locate our struct tcm_qla2xxx_nacl and set the FC Nport WWPN 850 */ 851 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 852 nacl->nport_wwnn = wwnn; 853 tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn); 854 855 return se_nacl; 856} 857 858static void tcm_qla2xxx_drop_nodeacl(struct se_node_acl *se_acl) 859{ 860 struct se_portal_group *se_tpg = se_acl->se_tpg; 861 struct tcm_qla2xxx_nacl *nacl = container_of(se_acl, 862 struct tcm_qla2xxx_nacl, se_node_acl); 863 864 core_tpg_del_initiator_node_acl(se_tpg, se_acl, 1); 865 kfree(nacl); 866} 867 868/* Start items for tcm_qla2xxx_tpg_attrib_cit */ 869 870#define DEF_QLA_TPG_ATTRIB(name) \ 871 \ 872static ssize_t tcm_qla2xxx_tpg_attrib_show_##name( \ 873 struct se_portal_group *se_tpg, \ 874 char *page) \ 875{ \ 876 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \ 877 struct tcm_qla2xxx_tpg, se_tpg); \ 878 \ 879 return sprintf(page, "%u\n", tpg->tpg_attrib.name); \ 880} \ 881 \ 882static ssize_t tcm_qla2xxx_tpg_attrib_store_##name( \ 883 struct se_portal_group *se_tpg, \ 884 const char *page, \ 885 size_t count) \ 886{ \ 887 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \ 888 struct tcm_qla2xxx_tpg, se_tpg); \ 889 unsigned long val; \ 890 int ret; \ 891 \ 892 ret = kstrtoul(page, 0, &val); \ 893 if (ret < 0) { \ 894 pr_err("kstrtoul() failed with" \ 895 " ret: %d\n", ret); \ 896 return -EINVAL; \ 897 } \ 898 ret = tcm_qla2xxx_set_attrib_##name(tpg, val); \ 899 \ 900 return (!ret) ? count : -EINVAL; \ 901} 902 903#define DEF_QLA_TPG_ATTR_BOOL(_name) \ 904 \ 905static int tcm_qla2xxx_set_attrib_##_name( \ 906 struct tcm_qla2xxx_tpg *tpg, \ 907 unsigned long val) \ 908{ \ 909 struct tcm_qla2xxx_tpg_attrib *a = &tpg->tpg_attrib; \ 910 \ 911 if ((val != 0) && (val != 1)) { \ 912 pr_err("Illegal boolean value %lu\n", val); \ 913 return -EINVAL; \ 914 } \ 915 \ 916 a->_name = val; \ 917 return 0; \ 918} 919 920#define QLA_TPG_ATTR(_name, _mode) \ 921 TF_TPG_ATTRIB_ATTR(tcm_qla2xxx, _name, _mode); 922 923/* 924 * Define tcm_qla2xxx_tpg_attrib_s_generate_node_acls 925 */ 926DEF_QLA_TPG_ATTR_BOOL(generate_node_acls); 927DEF_QLA_TPG_ATTRIB(generate_node_acls); 928QLA_TPG_ATTR(generate_node_acls, S_IRUGO | S_IWUSR); 929 930/* 931 Define tcm_qla2xxx_attrib_s_cache_dynamic_acls 932 */ 933DEF_QLA_TPG_ATTR_BOOL(cache_dynamic_acls); 934DEF_QLA_TPG_ATTRIB(cache_dynamic_acls); 935QLA_TPG_ATTR(cache_dynamic_acls, S_IRUGO | S_IWUSR); 936 937/* 938 * Define tcm_qla2xxx_tpg_attrib_s_demo_mode_write_protect 939 */ 940DEF_QLA_TPG_ATTR_BOOL(demo_mode_write_protect); 941DEF_QLA_TPG_ATTRIB(demo_mode_write_protect); 942QLA_TPG_ATTR(demo_mode_write_protect, S_IRUGO | S_IWUSR); 943 944/* 945 * Define tcm_qla2xxx_tpg_attrib_s_prod_mode_write_protect 946 */ 947DEF_QLA_TPG_ATTR_BOOL(prod_mode_write_protect); 948DEF_QLA_TPG_ATTRIB(prod_mode_write_protect); 949QLA_TPG_ATTR(prod_mode_write_protect, S_IRUGO | S_IWUSR); 950 951/* 952 * Define tcm_qla2xxx_tpg_attrib_s_demo_mode_login_only 953 */ 954DEF_QLA_TPG_ATTR_BOOL(demo_mode_login_only); 955DEF_QLA_TPG_ATTRIB(demo_mode_login_only); 956QLA_TPG_ATTR(demo_mode_login_only, S_IRUGO | S_IWUSR); 957 958static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = { 959 &tcm_qla2xxx_tpg_attrib_generate_node_acls.attr, 960 &tcm_qla2xxx_tpg_attrib_cache_dynamic_acls.attr, 961 &tcm_qla2xxx_tpg_attrib_demo_mode_write_protect.attr, 962 &tcm_qla2xxx_tpg_attrib_prod_mode_write_protect.attr, 963 &tcm_qla2xxx_tpg_attrib_demo_mode_login_only.attr, 964 NULL, 965}; 966 967/* End items for tcm_qla2xxx_tpg_attrib_cit */ 968 969static ssize_t tcm_qla2xxx_tpg_show_enable( 970 struct se_portal_group *se_tpg, 971 char *page) 972{ 973 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 974 struct tcm_qla2xxx_tpg, se_tpg); 975 976 return snprintf(page, PAGE_SIZE, "%d\n", 977 atomic_read(&tpg->lport_tpg_enabled)); 978} 979 980static void tcm_qla2xxx_depend_tpg(struct work_struct *work) 981{ 982 struct tcm_qla2xxx_tpg *base_tpg = container_of(work, 983 struct tcm_qla2xxx_tpg, tpg_base_work); 984 struct se_portal_group *se_tpg = &base_tpg->se_tpg; 985 struct scsi_qla_host *base_vha = base_tpg->lport->qla_vha; 986 987 if (!configfs_depend_item(se_tpg->se_tpg_tfo->tf_subsys, 988 &se_tpg->tpg_group.cg_item)) { 989 atomic_set(&base_tpg->lport_tpg_enabled, 1); 990 qlt_enable_vha(base_vha); 991 } 992 complete(&base_tpg->tpg_base_comp); 993} 994 995static void tcm_qla2xxx_undepend_tpg(struct work_struct *work) 996{ 997 struct tcm_qla2xxx_tpg *base_tpg = container_of(work, 998 struct tcm_qla2xxx_tpg, tpg_base_work); 999 struct se_portal_group *se_tpg = &base_tpg->se_tpg; 1000 struct scsi_qla_host *base_vha = base_tpg->lport->qla_vha; 1001 1002 if (!qlt_stop_phase1(base_vha->vha_tgt.qla_tgt)) { 1003 atomic_set(&base_tpg->lport_tpg_enabled, 0); 1004 configfs_undepend_item(se_tpg->se_tpg_tfo->tf_subsys, 1005 &se_tpg->tpg_group.cg_item); 1006 } 1007 complete(&base_tpg->tpg_base_comp); 1008} 1009 1010static ssize_t tcm_qla2xxx_tpg_store_enable( 1011 struct se_portal_group *se_tpg, 1012 const char *page, 1013 size_t count) 1014{ 1015 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1016 struct tcm_qla2xxx_tpg, se_tpg); 1017 unsigned long op; 1018 int rc; 1019 1020 rc = kstrtoul(page, 0, &op); 1021 if (rc < 0) { 1022 pr_err("kstrtoul() returned %d\n", rc); 1023 return -EINVAL; 1024 } 1025 if ((op != 1) && (op != 0)) { 1026 pr_err("Illegal value for tpg_enable: %lu\n", op); 1027 return -EINVAL; 1028 } 1029 if (op) { 1030 if (atomic_read(&tpg->lport_tpg_enabled)) 1031 return -EEXIST; 1032 1033 INIT_WORK(&tpg->tpg_base_work, tcm_qla2xxx_depend_tpg); 1034 } else { 1035 if (!atomic_read(&tpg->lport_tpg_enabled)) 1036 return count; 1037 1038 INIT_WORK(&tpg->tpg_base_work, tcm_qla2xxx_undepend_tpg); 1039 } 1040 init_completion(&tpg->tpg_base_comp); 1041 schedule_work(&tpg->tpg_base_work); 1042 wait_for_completion(&tpg->tpg_base_comp); 1043 1044 if (op) { 1045 if (!atomic_read(&tpg->lport_tpg_enabled)) 1046 return -ENODEV; 1047 } else { 1048 if (atomic_read(&tpg->lport_tpg_enabled)) 1049 return -EPERM; 1050 } 1051 return count; 1052} 1053 1054TF_TPG_BASE_ATTR(tcm_qla2xxx, enable, S_IRUGO | S_IWUSR); 1055 1056static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = { 1057 &tcm_qla2xxx_tpg_enable.attr, 1058 NULL, 1059}; 1060 1061static struct se_portal_group *tcm_qla2xxx_make_tpg( 1062 struct se_wwn *wwn, 1063 struct config_group *group, 1064 const char *name) 1065{ 1066 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1067 struct tcm_qla2xxx_lport, lport_wwn); 1068 struct tcm_qla2xxx_tpg *tpg; 1069 unsigned long tpgt; 1070 int ret; 1071 1072 if (strstr(name, "tpgt_") != name) 1073 return ERR_PTR(-EINVAL); 1074 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX) 1075 return ERR_PTR(-EINVAL); 1076 1077 if ((tpgt != 1)) { 1078 pr_err("In non NPIV mode, a single TPG=1 is used for HW port mappings\n"); 1079 return ERR_PTR(-ENOSYS); 1080 } 1081 1082 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL); 1083 if (!tpg) { 1084 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n"); 1085 return ERR_PTR(-ENOMEM); 1086 } 1087 tpg->lport = lport; 1088 tpg->lport_tpgt = tpgt; 1089 /* 1090 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic 1091 * NodeACLs 1092 */ 1093 tpg->tpg_attrib.generate_node_acls = 1; 1094 tpg->tpg_attrib.demo_mode_write_protect = 1; 1095 tpg->tpg_attrib.cache_dynamic_acls = 1; 1096 tpg->tpg_attrib.demo_mode_login_only = 1; 1097 1098 ret = core_tpg_register(&tcm_qla2xxx_fabric_configfs->tf_ops, wwn, 1099 &tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL); 1100 if (ret < 0) { 1101 kfree(tpg); 1102 return NULL; 1103 } 1104 1105 lport->tpg_1 = tpg; 1106 1107 return &tpg->se_tpg; 1108} 1109 1110static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg) 1111{ 1112 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1113 struct tcm_qla2xxx_tpg, se_tpg); 1114 struct tcm_qla2xxx_lport *lport = tpg->lport; 1115 struct scsi_qla_host *vha = lport->qla_vha; 1116 /* 1117 * Call into qla2x_target.c LLD logic to shutdown the active 1118 * FC Nexuses and disable target mode operation for this qla_hw_data 1119 */ 1120 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stop) 1121 qlt_stop_phase1(vha->vha_tgt.qla_tgt); 1122 1123 core_tpg_deregister(se_tpg); 1124 /* 1125 * Clear local TPG=1 pointer for non NPIV mode. 1126 */ 1127 lport->tpg_1 = NULL; 1128 kfree(tpg); 1129} 1130 1131static ssize_t tcm_qla2xxx_npiv_tpg_show_enable( 1132 struct se_portal_group *se_tpg, 1133 char *page) 1134{ 1135 return tcm_qla2xxx_tpg_show_enable(se_tpg, page); 1136} 1137 1138static ssize_t tcm_qla2xxx_npiv_tpg_store_enable( 1139 struct se_portal_group *se_tpg, 1140 const char *page, 1141 size_t count) 1142{ 1143 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn; 1144 struct tcm_qla2xxx_lport *lport = container_of(se_wwn, 1145 struct tcm_qla2xxx_lport, lport_wwn); 1146 struct scsi_qla_host *vha = lport->qla_vha; 1147 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1148 struct tcm_qla2xxx_tpg, se_tpg); 1149 unsigned long op; 1150 int rc; 1151 1152 rc = kstrtoul(page, 0, &op); 1153 if (rc < 0) { 1154 pr_err("kstrtoul() returned %d\n", rc); 1155 return -EINVAL; 1156 } 1157 if ((op != 1) && (op != 0)) { 1158 pr_err("Illegal value for tpg_enable: %lu\n", op); 1159 return -EINVAL; 1160 } 1161 if (op) { 1162 if (atomic_read(&tpg->lport_tpg_enabled)) 1163 return -EEXIST; 1164 1165 atomic_set(&tpg->lport_tpg_enabled, 1); 1166 qlt_enable_vha(vha); 1167 } else { 1168 if (!atomic_read(&tpg->lport_tpg_enabled)) 1169 return count; 1170 1171 atomic_set(&tpg->lport_tpg_enabled, 0); 1172 qlt_stop_phase1(vha->vha_tgt.qla_tgt); 1173 } 1174 1175 return count; 1176} 1177 1178TF_TPG_BASE_ATTR(tcm_qla2xxx_npiv, enable, S_IRUGO | S_IWUSR); 1179 1180static struct configfs_attribute *tcm_qla2xxx_npiv_tpg_attrs[] = { 1181 &tcm_qla2xxx_npiv_tpg_enable.attr, 1182 NULL, 1183}; 1184 1185static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg( 1186 struct se_wwn *wwn, 1187 struct config_group *group, 1188 const char *name) 1189{ 1190 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1191 struct tcm_qla2xxx_lport, lport_wwn); 1192 struct tcm_qla2xxx_tpg *tpg; 1193 unsigned long tpgt; 1194 int ret; 1195 1196 if (strstr(name, "tpgt_") != name) 1197 return ERR_PTR(-EINVAL); 1198 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX) 1199 return ERR_PTR(-EINVAL); 1200 1201 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL); 1202 if (!tpg) { 1203 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n"); 1204 return ERR_PTR(-ENOMEM); 1205 } 1206 tpg->lport = lport; 1207 tpg->lport_tpgt = tpgt; 1208 1209 /* 1210 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic 1211 * NodeACLs 1212 */ 1213 tpg->tpg_attrib.generate_node_acls = 1; 1214 tpg->tpg_attrib.demo_mode_write_protect = 1; 1215 tpg->tpg_attrib.cache_dynamic_acls = 1; 1216 tpg->tpg_attrib.demo_mode_login_only = 1; 1217 1218 ret = core_tpg_register(&tcm_qla2xxx_npiv_fabric_configfs->tf_ops, wwn, 1219 &tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL); 1220 if (ret < 0) { 1221 kfree(tpg); 1222 return NULL; 1223 } 1224 lport->tpg_1 = tpg; 1225 return &tpg->se_tpg; 1226} 1227 1228/* 1229 * Expected to be called with struct qla_hw_data->hardware_lock held 1230 */ 1231static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_s_id( 1232 scsi_qla_host_t *vha, 1233 const uint8_t *s_id) 1234{ 1235 struct tcm_qla2xxx_lport *lport; 1236 struct se_node_acl *se_nacl; 1237 struct tcm_qla2xxx_nacl *nacl; 1238 u32 key; 1239 1240 lport = vha->vha_tgt.target_lport_ptr; 1241 if (!lport) { 1242 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1243 dump_stack(); 1244 return NULL; 1245 } 1246 1247 key = (((unsigned long)s_id[0] << 16) | 1248 ((unsigned long)s_id[1] << 8) | 1249 (unsigned long)s_id[2]); 1250 pr_debug("find_sess_by_s_id: 0x%06x\n", key); 1251 1252 se_nacl = btree_lookup32(&lport->lport_fcport_map, key); 1253 if (!se_nacl) { 1254 pr_debug("Unable to locate s_id: 0x%06x\n", key); 1255 return NULL; 1256 } 1257 pr_debug("find_sess_by_s_id: located se_nacl: %p, initiatorname: %s\n", 1258 se_nacl, se_nacl->initiatorname); 1259 1260 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1261 if (!nacl->qla_tgt_sess) { 1262 pr_err("Unable to locate struct qla_tgt_sess\n"); 1263 return NULL; 1264 } 1265 1266 return nacl->qla_tgt_sess; 1267} 1268 1269/* 1270 * Expected to be called with struct qla_hw_data->hardware_lock held 1271 */ 1272static void tcm_qla2xxx_set_sess_by_s_id( 1273 struct tcm_qla2xxx_lport *lport, 1274 struct se_node_acl *new_se_nacl, 1275 struct tcm_qla2xxx_nacl *nacl, 1276 struct se_session *se_sess, 1277 struct qla_tgt_sess *qla_tgt_sess, 1278 uint8_t *s_id) 1279{ 1280 u32 key; 1281 void *slot; 1282 int rc; 1283 1284 key = (((unsigned long)s_id[0] << 16) | 1285 ((unsigned long)s_id[1] << 8) | 1286 (unsigned long)s_id[2]); 1287 pr_debug("set_sess_by_s_id: %06x\n", key); 1288 1289 slot = btree_lookup32(&lport->lport_fcport_map, key); 1290 if (!slot) { 1291 if (new_se_nacl) { 1292 pr_debug("Setting up new fc_port entry to new_se_nacl\n"); 1293 nacl->nport_id = key; 1294 rc = btree_insert32(&lport->lport_fcport_map, key, 1295 new_se_nacl, GFP_ATOMIC); 1296 if (rc) 1297 printk(KERN_ERR "Unable to insert s_id into fcport_map: %06x\n", 1298 (int)key); 1299 } else { 1300 pr_debug("Wiping nonexisting fc_port entry\n"); 1301 } 1302 1303 qla_tgt_sess->se_sess = se_sess; 1304 nacl->qla_tgt_sess = qla_tgt_sess; 1305 return; 1306 } 1307 1308 if (nacl->qla_tgt_sess) { 1309 if (new_se_nacl == NULL) { 1310 pr_debug("Clearing existing nacl->qla_tgt_sess and fc_port entry\n"); 1311 btree_remove32(&lport->lport_fcport_map, key); 1312 nacl->qla_tgt_sess = NULL; 1313 return; 1314 } 1315 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_port entry\n"); 1316 btree_update32(&lport->lport_fcport_map, key, new_se_nacl); 1317 qla_tgt_sess->se_sess = se_sess; 1318 nacl->qla_tgt_sess = qla_tgt_sess; 1319 return; 1320 } 1321 1322 if (new_se_nacl == NULL) { 1323 pr_debug("Clearing existing fc_port entry\n"); 1324 btree_remove32(&lport->lport_fcport_map, key); 1325 return; 1326 } 1327 1328 pr_debug("Replacing existing fc_port entry w/o active nacl->qla_tgt_sess\n"); 1329 btree_update32(&lport->lport_fcport_map, key, new_se_nacl); 1330 qla_tgt_sess->se_sess = se_sess; 1331 nacl->qla_tgt_sess = qla_tgt_sess; 1332 1333 pr_debug("Setup nacl->qla_tgt_sess %p by s_id for se_nacl: %p, initiatorname: %s\n", 1334 nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname); 1335} 1336 1337/* 1338 * Expected to be called with struct qla_hw_data->hardware_lock held 1339 */ 1340static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_loop_id( 1341 scsi_qla_host_t *vha, 1342 const uint16_t loop_id) 1343{ 1344 struct tcm_qla2xxx_lport *lport; 1345 struct se_node_acl *se_nacl; 1346 struct tcm_qla2xxx_nacl *nacl; 1347 struct tcm_qla2xxx_fc_loopid *fc_loopid; 1348 1349 lport = vha->vha_tgt.target_lport_ptr; 1350 if (!lport) { 1351 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1352 dump_stack(); 1353 return NULL; 1354 } 1355 1356 pr_debug("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id); 1357 1358 fc_loopid = lport->lport_loopid_map + loop_id; 1359 se_nacl = fc_loopid->se_nacl; 1360 if (!se_nacl) { 1361 pr_debug("Unable to locate se_nacl by loop_id: 0x%04x\n", 1362 loop_id); 1363 return NULL; 1364 } 1365 1366 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1367 1368 if (!nacl->qla_tgt_sess) { 1369 pr_err("Unable to locate struct qla_tgt_sess\n"); 1370 return NULL; 1371 } 1372 1373 return nacl->qla_tgt_sess; 1374} 1375 1376/* 1377 * Expected to be called with struct qla_hw_data->hardware_lock held 1378 */ 1379static void tcm_qla2xxx_set_sess_by_loop_id( 1380 struct tcm_qla2xxx_lport *lport, 1381 struct se_node_acl *new_se_nacl, 1382 struct tcm_qla2xxx_nacl *nacl, 1383 struct se_session *se_sess, 1384 struct qla_tgt_sess *qla_tgt_sess, 1385 uint16_t loop_id) 1386{ 1387 struct se_node_acl *saved_nacl; 1388 struct tcm_qla2xxx_fc_loopid *fc_loopid; 1389 1390 pr_debug("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id); 1391 1392 fc_loopid = &((struct tcm_qla2xxx_fc_loopid *) 1393 lport->lport_loopid_map)[loop_id]; 1394 1395 saved_nacl = fc_loopid->se_nacl; 1396 if (!saved_nacl) { 1397 pr_debug("Setting up new fc_loopid->se_nacl to new_se_nacl\n"); 1398 fc_loopid->se_nacl = new_se_nacl; 1399 if (qla_tgt_sess->se_sess != se_sess) 1400 qla_tgt_sess->se_sess = se_sess; 1401 if (nacl->qla_tgt_sess != qla_tgt_sess) 1402 nacl->qla_tgt_sess = qla_tgt_sess; 1403 return; 1404 } 1405 1406 if (nacl->qla_tgt_sess) { 1407 if (new_se_nacl == NULL) { 1408 pr_debug("Clearing nacl->qla_tgt_sess and fc_loopid->se_nacl\n"); 1409 fc_loopid->se_nacl = NULL; 1410 nacl->qla_tgt_sess = NULL; 1411 return; 1412 } 1413 1414 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_loopid->se_nacl\n"); 1415 fc_loopid->se_nacl = new_se_nacl; 1416 if (qla_tgt_sess->se_sess != se_sess) 1417 qla_tgt_sess->se_sess = se_sess; 1418 if (nacl->qla_tgt_sess != qla_tgt_sess) 1419 nacl->qla_tgt_sess = qla_tgt_sess; 1420 return; 1421 } 1422 1423 if (new_se_nacl == NULL) { 1424 pr_debug("Clearing fc_loopid->se_nacl\n"); 1425 fc_loopid->se_nacl = NULL; 1426 return; 1427 } 1428 1429 pr_debug("Replacing existing fc_loopid->se_nacl w/o active nacl->qla_tgt_sess\n"); 1430 fc_loopid->se_nacl = new_se_nacl; 1431 if (qla_tgt_sess->se_sess != se_sess) 1432 qla_tgt_sess->se_sess = se_sess; 1433 if (nacl->qla_tgt_sess != qla_tgt_sess) 1434 nacl->qla_tgt_sess = qla_tgt_sess; 1435 1436 pr_debug("Setup nacl->qla_tgt_sess %p by loop_id for se_nacl: %p, initiatorname: %s\n", 1437 nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname); 1438} 1439 1440/* 1441 * Should always be called with qla_hw_data->hardware_lock held. 1442 */ 1443static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *lport, 1444 struct tcm_qla2xxx_nacl *nacl, struct qla_tgt_sess *sess) 1445{ 1446 struct se_session *se_sess = sess->se_sess; 1447 unsigned char be_sid[3]; 1448 1449 be_sid[0] = sess->s_id.b.domain; 1450 be_sid[1] = sess->s_id.b.area; 1451 be_sid[2] = sess->s_id.b.al_pa; 1452 1453 tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess, 1454 sess, be_sid); 1455 tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess, 1456 sess, sess->loop_id); 1457} 1458 1459static void tcm_qla2xxx_free_session(struct qla_tgt_sess *sess) 1460{ 1461 struct qla_tgt *tgt = sess->tgt; 1462 struct qla_hw_data *ha = tgt->ha; 1463 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev); 1464 struct se_session *se_sess; 1465 struct se_node_acl *se_nacl; 1466 struct tcm_qla2xxx_lport *lport; 1467 struct tcm_qla2xxx_nacl *nacl; 1468 1469 BUG_ON(in_interrupt()); 1470 1471 se_sess = sess->se_sess; 1472 if (!se_sess) { 1473 pr_err("struct qla_tgt_sess->se_sess is NULL\n"); 1474 dump_stack(); 1475 return; 1476 } 1477 se_nacl = se_sess->se_node_acl; 1478 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1479 1480 lport = vha->vha_tgt.target_lport_ptr; 1481 if (!lport) { 1482 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1483 dump_stack(); 1484 return; 1485 } 1486 target_wait_for_sess_cmds(se_sess); 1487 1488 transport_deregister_session_configfs(sess->se_sess); 1489 transport_deregister_session(sess->se_sess); 1490} 1491 1492/* 1493 * Called via qlt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl() 1494 * to locate struct se_node_acl 1495 */ 1496static int tcm_qla2xxx_check_initiator_node_acl( 1497 scsi_qla_host_t *vha, 1498 unsigned char *fc_wwpn, 1499 void *qla_tgt_sess, 1500 uint8_t *s_id, 1501 uint16_t loop_id) 1502{ 1503 struct qla_hw_data *ha = vha->hw; 1504 struct tcm_qla2xxx_lport *lport; 1505 struct tcm_qla2xxx_tpg *tpg; 1506 struct tcm_qla2xxx_nacl *nacl; 1507 struct se_portal_group *se_tpg; 1508 struct se_node_acl *se_nacl; 1509 struct se_session *se_sess; 1510 struct qla_tgt_sess *sess = qla_tgt_sess; 1511 unsigned char port_name[36]; 1512 unsigned long flags; 1513 int num_tags = (ha->fw_xcb_count) ? ha->fw_xcb_count : 1514 TCM_QLA2XXX_DEFAULT_TAGS; 1515 1516 lport = vha->vha_tgt.target_lport_ptr; 1517 if (!lport) { 1518 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1519 dump_stack(); 1520 return -EINVAL; 1521 } 1522 /* 1523 * Locate the TPG=1 reference.. 1524 */ 1525 tpg = lport->tpg_1; 1526 if (!tpg) { 1527 pr_err("Unable to lcoate struct tcm_qla2xxx_lport->tpg_1\n"); 1528 return -EINVAL; 1529 } 1530 se_tpg = &tpg->se_tpg; 1531 1532 se_sess = transport_init_session_tags(num_tags, 1533 sizeof(struct qla_tgt_cmd), 1534 TARGET_PROT_NORMAL); 1535 if (IS_ERR(se_sess)) { 1536 pr_err("Unable to initialize struct se_session\n"); 1537 return PTR_ERR(se_sess); 1538 } 1539 /* 1540 * Format the FCP Initiator port_name into colon seperated values to 1541 * match the format by tcm_qla2xxx explict ConfigFS NodeACLs. 1542 */ 1543 memset(&port_name, 0, 36); 1544 snprintf(port_name, 36, "%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x", 1545 fc_wwpn[0], fc_wwpn[1], fc_wwpn[2], fc_wwpn[3], fc_wwpn[4], 1546 fc_wwpn[5], fc_wwpn[6], fc_wwpn[7]); 1547 /* 1548 * Locate our struct se_node_acl either from an explict NodeACL created 1549 * via ConfigFS, or via running in TPG demo mode. 1550 */ 1551 se_sess->se_node_acl = core_tpg_check_initiator_node_acl(se_tpg, 1552 port_name); 1553 if (!se_sess->se_node_acl) { 1554 transport_free_session(se_sess); 1555 return -EINVAL; 1556 } 1557 se_nacl = se_sess->se_node_acl; 1558 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1559 /* 1560 * And now setup the new se_nacl and session pointers into our HW lport 1561 * mappings for fabric S_ID and LOOP_ID. 1562 */ 1563 spin_lock_irqsave(&ha->hardware_lock, flags); 1564 tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl, se_sess, 1565 qla_tgt_sess, s_id); 1566 tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl, se_sess, 1567 qla_tgt_sess, loop_id); 1568 spin_unlock_irqrestore(&ha->hardware_lock, flags); 1569 /* 1570 * Finally register the new FC Nexus with TCM 1571 */ 1572 __transport_register_session(se_nacl->se_tpg, se_nacl, se_sess, sess); 1573 1574 return 0; 1575} 1576 1577static void tcm_qla2xxx_update_sess(struct qla_tgt_sess *sess, port_id_t s_id, 1578 uint16_t loop_id, bool conf_compl_supported) 1579{ 1580 struct qla_tgt *tgt = sess->tgt; 1581 struct qla_hw_data *ha = tgt->ha; 1582 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev); 1583 struct tcm_qla2xxx_lport *lport = vha->vha_tgt.target_lport_ptr; 1584 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl; 1585 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl, 1586 struct tcm_qla2xxx_nacl, se_node_acl); 1587 u32 key; 1588 1589 1590 if (sess->loop_id != loop_id || sess->s_id.b24 != s_id.b24) 1591 pr_info("Updating session %p from port %8phC loop_id %d -> %d s_id %x:%x:%x -> %x:%x:%x\n", 1592 sess, sess->port_name, 1593 sess->loop_id, loop_id, sess->s_id.b.domain, 1594 sess->s_id.b.area, sess->s_id.b.al_pa, s_id.b.domain, 1595 s_id.b.area, s_id.b.al_pa); 1596 1597 if (sess->loop_id != loop_id) { 1598 /* 1599 * Because we can shuffle loop IDs around and we 1600 * update different sessions non-atomically, we might 1601 * have overwritten this session's old loop ID 1602 * already, and we might end up overwriting some other 1603 * session that will be updated later. So we have to 1604 * be extra careful and we can't warn about those things... 1605 */ 1606 if (lport->lport_loopid_map[sess->loop_id].se_nacl == se_nacl) 1607 lport->lport_loopid_map[sess->loop_id].se_nacl = NULL; 1608 1609 lport->lport_loopid_map[loop_id].se_nacl = se_nacl; 1610 1611 sess->loop_id = loop_id; 1612 } 1613 1614 if (sess->s_id.b24 != s_id.b24) { 1615 key = (((u32) sess->s_id.b.domain << 16) | 1616 ((u32) sess->s_id.b.area << 8) | 1617 ((u32) sess->s_id.b.al_pa)); 1618 1619 if (btree_lookup32(&lport->lport_fcport_map, key)) 1620 WARN(btree_remove32(&lport->lport_fcport_map, key) != se_nacl, 1621 "Found wrong se_nacl when updating s_id %x:%x:%x\n", 1622 sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa); 1623 else 1624 WARN(1, "No lport_fcport_map entry for s_id %x:%x:%x\n", 1625 sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa); 1626 1627 key = (((u32) s_id.b.domain << 16) | 1628 ((u32) s_id.b.area << 8) | 1629 ((u32) s_id.b.al_pa)); 1630 1631 if (btree_lookup32(&lport->lport_fcport_map, key)) { 1632 WARN(1, "Already have lport_fcport_map entry for s_id %x:%x:%x\n", 1633 s_id.b.domain, s_id.b.area, s_id.b.al_pa); 1634 btree_update32(&lport->lport_fcport_map, key, se_nacl); 1635 } else { 1636 btree_insert32(&lport->lport_fcport_map, key, se_nacl, GFP_ATOMIC); 1637 } 1638 1639 sess->s_id = s_id; 1640 nacl->nport_id = key; 1641 } 1642 1643 sess->conf_compl_supported = conf_compl_supported; 1644} 1645 1646/* 1647 * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path. 1648 */ 1649static struct qla_tgt_func_tmpl tcm_qla2xxx_template = { 1650 .handle_cmd = tcm_qla2xxx_handle_cmd, 1651 .handle_data = tcm_qla2xxx_handle_data, 1652 .handle_dif_err = tcm_qla2xxx_handle_dif_err, 1653 .handle_tmr = tcm_qla2xxx_handle_tmr, 1654 .free_cmd = tcm_qla2xxx_free_cmd, 1655 .free_mcmd = tcm_qla2xxx_free_mcmd, 1656 .free_session = tcm_qla2xxx_free_session, 1657 .update_sess = tcm_qla2xxx_update_sess, 1658 .check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl, 1659 .find_sess_by_s_id = tcm_qla2xxx_find_sess_by_s_id, 1660 .find_sess_by_loop_id = tcm_qla2xxx_find_sess_by_loop_id, 1661 .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map, 1662 .put_sess = tcm_qla2xxx_put_sess, 1663 .shutdown_sess = tcm_qla2xxx_shutdown_sess, 1664}; 1665 1666static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport) 1667{ 1668 int rc; 1669 1670 rc = btree_init32(&lport->lport_fcport_map); 1671 if (rc) { 1672 pr_err("Unable to initialize lport->lport_fcport_map btree\n"); 1673 return rc; 1674 } 1675 1676 lport->lport_loopid_map = vmalloc(sizeof(struct tcm_qla2xxx_fc_loopid) * 1677 65536); 1678 if (!lport->lport_loopid_map) { 1679 pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n", 1680 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536); 1681 btree_destroy32(&lport->lport_fcport_map); 1682 return -ENOMEM; 1683 } 1684 memset(lport->lport_loopid_map, 0, sizeof(struct tcm_qla2xxx_fc_loopid) 1685 * 65536); 1686 pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n", 1687 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536); 1688 return 0; 1689} 1690 1691static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha, 1692 void *target_lport_ptr, 1693 u64 npiv_wwpn, u64 npiv_wwnn) 1694{ 1695 struct qla_hw_data *ha = vha->hw; 1696 struct tcm_qla2xxx_lport *lport = 1697 (struct tcm_qla2xxx_lport *)target_lport_ptr; 1698 /* 1699 * Setup tgt_ops, local pointer to vha and target_lport_ptr 1700 */ 1701 ha->tgt.tgt_ops = &tcm_qla2xxx_template; 1702 vha->vha_tgt.target_lport_ptr = target_lport_ptr; 1703 lport->qla_vha = vha; 1704 1705 return 0; 1706} 1707 1708static struct se_wwn *tcm_qla2xxx_make_lport( 1709 struct target_fabric_configfs *tf, 1710 struct config_group *group, 1711 const char *name) 1712{ 1713 struct tcm_qla2xxx_lport *lport; 1714 u64 wwpn; 1715 int ret = -ENODEV; 1716 1717 if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0) 1718 return ERR_PTR(-EINVAL); 1719 1720 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL); 1721 if (!lport) { 1722 pr_err("Unable to allocate struct tcm_qla2xxx_lport\n"); 1723 return ERR_PTR(-ENOMEM); 1724 } 1725 lport->lport_wwpn = wwpn; 1726 tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN, 1727 wwpn); 1728 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) wwpn); 1729 1730 ret = tcm_qla2xxx_init_lport(lport); 1731 if (ret != 0) 1732 goto out; 1733 1734 ret = qlt_lport_register(lport, wwpn, 0, 0, 1735 tcm_qla2xxx_lport_register_cb); 1736 if (ret != 0) 1737 goto out_lport; 1738 1739 return &lport->lport_wwn; 1740out_lport: 1741 vfree(lport->lport_loopid_map); 1742 btree_destroy32(&lport->lport_fcport_map); 1743out: 1744 kfree(lport); 1745 return ERR_PTR(ret); 1746} 1747 1748static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn) 1749{ 1750 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1751 struct tcm_qla2xxx_lport, lport_wwn); 1752 struct scsi_qla_host *vha = lport->qla_vha; 1753 struct se_node_acl *node; 1754 u32 key = 0; 1755 1756 /* 1757 * Call into qla2x_target.c LLD logic to complete the 1758 * shutdown of struct qla_tgt after the call to 1759 * qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above.. 1760 */ 1761 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stopped) 1762 qlt_stop_phase2(vha->vha_tgt.qla_tgt); 1763 1764 qlt_lport_deregister(vha); 1765 1766 vfree(lport->lport_loopid_map); 1767 btree_for_each_safe32(&lport->lport_fcport_map, key, node) 1768 btree_remove32(&lport->lport_fcport_map, key); 1769 btree_destroy32(&lport->lport_fcport_map); 1770 kfree(lport); 1771} 1772 1773static int tcm_qla2xxx_lport_register_npiv_cb(struct scsi_qla_host *base_vha, 1774 void *target_lport_ptr, 1775 u64 npiv_wwpn, u64 npiv_wwnn) 1776{ 1777 struct fc_vport *vport; 1778 struct Scsi_Host *sh = base_vha->host; 1779 struct scsi_qla_host *npiv_vha; 1780 struct tcm_qla2xxx_lport *lport = 1781 (struct tcm_qla2xxx_lport *)target_lport_ptr; 1782 struct tcm_qla2xxx_lport *base_lport = 1783 (struct tcm_qla2xxx_lport *)base_vha->vha_tgt.target_lport_ptr; 1784 struct tcm_qla2xxx_tpg *base_tpg; 1785 struct fc_vport_identifiers vport_id; 1786 1787 if (!qla_tgt_mode_enabled(base_vha)) { 1788 pr_err("qla2xxx base_vha not enabled for target mode\n"); 1789 return -EPERM; 1790 } 1791 1792 if (!base_lport || !base_lport->tpg_1 || 1793 !atomic_read(&base_lport->tpg_1->lport_tpg_enabled)) { 1794 pr_err("qla2xxx base_lport or tpg_1 not available\n"); 1795 return -EPERM; 1796 } 1797 base_tpg = base_lport->tpg_1; 1798 1799 memset(&vport_id, 0, sizeof(vport_id)); 1800 vport_id.port_name = npiv_wwpn; 1801 vport_id.node_name = npiv_wwnn; 1802 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR; 1803 vport_id.vport_type = FC_PORTTYPE_NPIV; 1804 vport_id.disable = false; 1805 1806 vport = fc_vport_create(sh, 0, &vport_id); 1807 if (!vport) { 1808 pr_err("fc_vport_create failed for qla2xxx_npiv\n"); 1809 return -ENODEV; 1810 } 1811 /* 1812 * Setup local pointer to NPIV vhba + target_lport_ptr 1813 */ 1814 npiv_vha = (struct scsi_qla_host *)vport->dd_data; 1815 npiv_vha->vha_tgt.target_lport_ptr = target_lport_ptr; 1816 lport->qla_vha = npiv_vha; 1817 scsi_host_get(npiv_vha->host); 1818 return 0; 1819} 1820 1821 1822static struct se_wwn *tcm_qla2xxx_npiv_make_lport( 1823 struct target_fabric_configfs *tf, 1824 struct config_group *group, 1825 const char *name) 1826{ 1827 struct tcm_qla2xxx_lport *lport; 1828 u64 phys_wwpn, npiv_wwpn, npiv_wwnn; 1829 char *p, tmp[128]; 1830 int ret; 1831 1832 snprintf(tmp, 128, "%s", name); 1833 1834 p = strchr(tmp, '@'); 1835 if (!p) { 1836 pr_err("Unable to locate NPIV '@' seperator\n"); 1837 return ERR_PTR(-EINVAL); 1838 } 1839 *p++ = '\0'; 1840 1841 if (tcm_qla2xxx_parse_wwn(tmp, &phys_wwpn, 1) < 0) 1842 return ERR_PTR(-EINVAL); 1843 1844 if (tcm_qla2xxx_npiv_parse_wwn(p, strlen(p)+1, 1845 &npiv_wwpn, &npiv_wwnn) < 0) 1846 return ERR_PTR(-EINVAL); 1847 1848 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL); 1849 if (!lport) { 1850 pr_err("Unable to allocate struct tcm_qla2xxx_lport for NPIV\n"); 1851 return ERR_PTR(-ENOMEM); 1852 } 1853 lport->lport_npiv_wwpn = npiv_wwpn; 1854 lport->lport_npiv_wwnn = npiv_wwnn; 1855 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) npiv_wwpn); 1856 1857 ret = tcm_qla2xxx_init_lport(lport); 1858 if (ret != 0) 1859 goto out; 1860 1861 ret = qlt_lport_register(lport, phys_wwpn, npiv_wwpn, npiv_wwnn, 1862 tcm_qla2xxx_lport_register_npiv_cb); 1863 if (ret != 0) 1864 goto out_lport; 1865 1866 return &lport->lport_wwn; 1867out_lport: 1868 vfree(lport->lport_loopid_map); 1869 btree_destroy32(&lport->lport_fcport_map); 1870out: 1871 kfree(lport); 1872 return ERR_PTR(ret); 1873} 1874 1875static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn) 1876{ 1877 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1878 struct tcm_qla2xxx_lport, lport_wwn); 1879 struct scsi_qla_host *npiv_vha = lport->qla_vha; 1880 struct qla_hw_data *ha = npiv_vha->hw; 1881 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 1882 1883 scsi_host_put(npiv_vha->host); 1884 /* 1885 * Notify libfc that we want to release the vha->fc_vport 1886 */ 1887 fc_vport_terminate(npiv_vha->fc_vport); 1888 scsi_host_put(base_vha->host); 1889 kfree(lport); 1890} 1891 1892 1893static ssize_t tcm_qla2xxx_wwn_show_attr_version( 1894 struct target_fabric_configfs *tf, 1895 char *page) 1896{ 1897 return sprintf(page, 1898 "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s on " 1899 UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname, 1900 utsname()->machine); 1901} 1902 1903TF_WWN_ATTR_RO(tcm_qla2xxx, version); 1904 1905static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = { 1906 &tcm_qla2xxx_wwn_version.attr, 1907 NULL, 1908}; 1909 1910static struct target_core_fabric_ops tcm_qla2xxx_ops = { 1911 .get_fabric_name = tcm_qla2xxx_get_fabric_name, 1912 .get_fabric_proto_ident = tcm_qla2xxx_get_fabric_proto_ident, 1913 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn, 1914 .tpg_get_tag = tcm_qla2xxx_get_tag, 1915 .tpg_get_default_depth = tcm_qla2xxx_get_default_depth, 1916 .tpg_get_pr_transport_id = tcm_qla2xxx_get_pr_transport_id, 1917 .tpg_get_pr_transport_id_len = tcm_qla2xxx_get_pr_transport_id_len, 1918 .tpg_parse_pr_out_transport_id = tcm_qla2xxx_parse_pr_out_transport_id, 1919 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode, 1920 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache, 1921 .tpg_check_demo_mode_write_protect = 1922 tcm_qla2xxx_check_demo_write_protect, 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_make_lport, 1950 .fabric_drop_wwn = tcm_qla2xxx_drop_lport, 1951 .fabric_make_tpg = tcm_qla2xxx_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 struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = { 1962 .get_fabric_name = tcm_qla2xxx_npiv_get_fabric_name, 1963 .get_fabric_proto_ident = tcm_qla2xxx_get_fabric_proto_ident, 1964 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn, 1965 .tpg_get_tag = tcm_qla2xxx_get_tag, 1966 .tpg_get_default_depth = tcm_qla2xxx_get_default_depth, 1967 .tpg_get_pr_transport_id = tcm_qla2xxx_get_pr_transport_id, 1968 .tpg_get_pr_transport_id_len = tcm_qla2xxx_get_pr_transport_id_len, 1969 .tpg_parse_pr_out_transport_id = tcm_qla2xxx_parse_pr_out_transport_id, 1970 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode, 1971 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache, 1972 .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_demo_mode, 1973 .tpg_check_prod_mode_write_protect = 1974 tcm_qla2xxx_check_prod_write_protect, 1975 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only, 1976 .tpg_alloc_fabric_acl = tcm_qla2xxx_alloc_fabric_acl, 1977 .tpg_release_fabric_acl = tcm_qla2xxx_release_fabric_acl, 1978 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index, 1979 .check_stop_free = tcm_qla2xxx_check_stop_free, 1980 .release_cmd = tcm_qla2xxx_release_cmd, 1981 .put_session = tcm_qla2xxx_put_session, 1982 .shutdown_session = tcm_qla2xxx_shutdown_session, 1983 .close_session = tcm_qla2xxx_close_session, 1984 .sess_get_index = tcm_qla2xxx_sess_get_index, 1985 .sess_get_initiator_sid = NULL, 1986 .write_pending = tcm_qla2xxx_write_pending, 1987 .write_pending_status = tcm_qla2xxx_write_pending_status, 1988 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs, 1989 .get_task_tag = tcm_qla2xxx_get_task_tag, 1990 .get_cmd_state = tcm_qla2xxx_get_cmd_state, 1991 .queue_data_in = tcm_qla2xxx_queue_data_in, 1992 .queue_status = tcm_qla2xxx_queue_status, 1993 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp, 1994 .aborted_task = tcm_qla2xxx_aborted_task, 1995 /* 1996 * Setup function pointers for generic logic in 1997 * target_core_fabric_configfs.c 1998 */ 1999 .fabric_make_wwn = tcm_qla2xxx_npiv_make_lport, 2000 .fabric_drop_wwn = tcm_qla2xxx_npiv_drop_lport, 2001 .fabric_make_tpg = tcm_qla2xxx_npiv_make_tpg, 2002 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg, 2003 .fabric_post_link = NULL, 2004 .fabric_pre_unlink = NULL, 2005 .fabric_make_np = NULL, 2006 .fabric_drop_np = NULL, 2007 .fabric_make_nodeacl = tcm_qla2xxx_make_nodeacl, 2008 .fabric_drop_nodeacl = tcm_qla2xxx_drop_nodeacl, 2009}; 2010 2011static int tcm_qla2xxx_register_configfs(void) 2012{ 2013 struct target_fabric_configfs *fabric, *npiv_fabric; 2014 int ret; 2015 2016 pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on " 2017 UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname, 2018 utsname()->machine); 2019 /* 2020 * Register the top level struct config_item_type with TCM core 2021 */ 2022 fabric = target_fabric_configfs_init(THIS_MODULE, "qla2xxx"); 2023 if (IS_ERR(fabric)) { 2024 pr_err("target_fabric_configfs_init() failed\n"); 2025 return PTR_ERR(fabric); 2026 } 2027 /* 2028 * Setup fabric->tf_ops from our local tcm_qla2xxx_ops 2029 */ 2030 fabric->tf_ops = tcm_qla2xxx_ops; 2031 /* 2032 * Setup default attribute lists for various fabric->tf_cit_tmpl 2033 */ 2034 fabric->tf_cit_tmpl.tfc_wwn_cit.ct_attrs = tcm_qla2xxx_wwn_attrs; 2035 fabric->tf_cit_tmpl.tfc_tpg_base_cit.ct_attrs = tcm_qla2xxx_tpg_attrs; 2036 fabric->tf_cit_tmpl.tfc_tpg_attrib_cit.ct_attrs = 2037 tcm_qla2xxx_tpg_attrib_attrs; 2038 fabric->tf_cit_tmpl.tfc_tpg_param_cit.ct_attrs = NULL; 2039 fabric->tf_cit_tmpl.tfc_tpg_np_base_cit.ct_attrs = NULL; 2040 fabric->tf_cit_tmpl.tfc_tpg_nacl_base_cit.ct_attrs = NULL; 2041 fabric->tf_cit_tmpl.tfc_tpg_nacl_attrib_cit.ct_attrs = NULL; 2042 fabric->tf_cit_tmpl.tfc_tpg_nacl_auth_cit.ct_attrs = NULL; 2043 fabric->tf_cit_tmpl.tfc_tpg_nacl_param_cit.ct_attrs = NULL; 2044 /* 2045 * Register the fabric for use within TCM 2046 */ 2047 ret = target_fabric_configfs_register(fabric); 2048 if (ret < 0) { 2049 pr_err("target_fabric_configfs_register() failed for TCM_QLA2XXX\n"); 2050 return ret; 2051 } 2052 /* 2053 * Setup our local pointer to *fabric 2054 */ 2055 tcm_qla2xxx_fabric_configfs = fabric; 2056 pr_debug("TCM_QLA2XXX[0] - Set fabric -> tcm_qla2xxx_fabric_configfs\n"); 2057 2058 /* 2059 * Register the top level struct config_item_type for NPIV with TCM core 2060 */ 2061 npiv_fabric = target_fabric_configfs_init(THIS_MODULE, "qla2xxx_npiv"); 2062 if (IS_ERR(npiv_fabric)) { 2063 pr_err("target_fabric_configfs_init() failed\n"); 2064 ret = PTR_ERR(npiv_fabric); 2065 goto out_fabric; 2066 } 2067 /* 2068 * Setup fabric->tf_ops from our local tcm_qla2xxx_npiv_ops 2069 */ 2070 npiv_fabric->tf_ops = tcm_qla2xxx_npiv_ops; 2071 /* 2072 * Setup default attribute lists for various npiv_fabric->tf_cit_tmpl 2073 */ 2074 npiv_fabric->tf_cit_tmpl.tfc_wwn_cit.ct_attrs = tcm_qla2xxx_wwn_attrs; 2075 npiv_fabric->tf_cit_tmpl.tfc_tpg_base_cit.ct_attrs = 2076 tcm_qla2xxx_npiv_tpg_attrs; 2077 npiv_fabric->tf_cit_tmpl.tfc_tpg_attrib_cit.ct_attrs = NULL; 2078 npiv_fabric->tf_cit_tmpl.tfc_tpg_param_cit.ct_attrs = NULL; 2079 npiv_fabric->tf_cit_tmpl.tfc_tpg_np_base_cit.ct_attrs = NULL; 2080 npiv_fabric->tf_cit_tmpl.tfc_tpg_nacl_base_cit.ct_attrs = NULL; 2081 npiv_fabric->tf_cit_tmpl.tfc_tpg_nacl_attrib_cit.ct_attrs = NULL; 2082 npiv_fabric->tf_cit_tmpl.tfc_tpg_nacl_auth_cit.ct_attrs = NULL; 2083 npiv_fabric->tf_cit_tmpl.tfc_tpg_nacl_param_cit.ct_attrs = NULL; 2084 /* 2085 * Register the npiv_fabric for use within TCM 2086 */ 2087 ret = target_fabric_configfs_register(npiv_fabric); 2088 if (ret < 0) { 2089 pr_err("target_fabric_configfs_register() failed for TCM_QLA2XXX\n"); 2090 goto out_fabric; 2091 } 2092 /* 2093 * Setup our local pointer to *npiv_fabric 2094 */ 2095 tcm_qla2xxx_npiv_fabric_configfs = npiv_fabric; 2096 pr_debug("TCM_QLA2XXX[0] - Set fabric -> tcm_qla2xxx_npiv_fabric_configfs\n"); 2097 2098 tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free", 2099 WQ_MEM_RECLAIM, 0); 2100 if (!tcm_qla2xxx_free_wq) { 2101 ret = -ENOMEM; 2102 goto out_fabric_npiv; 2103 } 2104 2105 tcm_qla2xxx_cmd_wq = alloc_workqueue("tcm_qla2xxx_cmd", 0, 0); 2106 if (!tcm_qla2xxx_cmd_wq) { 2107 ret = -ENOMEM; 2108 goto out_free_wq; 2109 } 2110 2111 return 0; 2112 2113out_free_wq: 2114 destroy_workqueue(tcm_qla2xxx_free_wq); 2115out_fabric_npiv: 2116 target_fabric_configfs_deregister(tcm_qla2xxx_npiv_fabric_configfs); 2117out_fabric: 2118 target_fabric_configfs_deregister(tcm_qla2xxx_fabric_configfs); 2119 return ret; 2120} 2121 2122static void tcm_qla2xxx_deregister_configfs(void) 2123{ 2124 destroy_workqueue(tcm_qla2xxx_cmd_wq); 2125 destroy_workqueue(tcm_qla2xxx_free_wq); 2126 2127 target_fabric_configfs_deregister(tcm_qla2xxx_fabric_configfs); 2128 tcm_qla2xxx_fabric_configfs = NULL; 2129 pr_debug("TCM_QLA2XXX[0] - Cleared tcm_qla2xxx_fabric_configfs\n"); 2130 2131 target_fabric_configfs_deregister(tcm_qla2xxx_npiv_fabric_configfs); 2132 tcm_qla2xxx_npiv_fabric_configfs = NULL; 2133 pr_debug("TCM_QLA2XXX[0] - Cleared tcm_qla2xxx_npiv_fabric_configfs\n"); 2134} 2135 2136static int __init tcm_qla2xxx_init(void) 2137{ 2138 int ret; 2139 2140 ret = tcm_qla2xxx_register_configfs(); 2141 if (ret < 0) 2142 return ret; 2143 2144 return 0; 2145} 2146 2147static void __exit tcm_qla2xxx_exit(void) 2148{ 2149 tcm_qla2xxx_deregister_configfs(); 2150} 2151 2152MODULE_DESCRIPTION("TCM QLA2XXX series NPIV enabled fabric driver"); 2153MODULE_LICENSE("GPL"); 2154module_init(tcm_qla2xxx_init); 2155module_exit(tcm_qla2xxx_exit); 2156