1 /******************************************************************************* 2 * This file contains tcm implementation using v4 configfs fabric infrastructure 3 * for QLogic target mode HBAs 4 * 5 * ?? Copyright 2010-2011 RisingTide Systems LLC. 6 * 7 * Licensed to the Linux Foundation under the General Public License (GPL) 8 * version 2. 9 * 10 * Author: Nicholas A. Bellinger <nab@risingtidesystems.com> 11 * 12 * tcm_qla2xxx_parse_wwn() and tcm_qla2xxx_format_wwn() contains code from 13 * the TCM_FC / Open-FCoE.org fabric module. 14 * 15 * Copyright (c) 2010 Cisco Systems, Inc 16 * 17 * This program is free software; you can redistribute it and/or modify 18 * it under the terms of the GNU General Public License as published by 19 * the Free Software Foundation; either version 2 of the License, or 20 * (at your option) any later version. 21 * 22 * This program is distributed in the hope that it will be useful, 23 * but WITHOUT ANY WARRANTY; without even the implied warranty of 24 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 25 * GNU General Public License for more details. 26 ****************************************************************************/ 27 28 29 #include <linux/module.h> 30 #include <linux/moduleparam.h> 31 #include <generated/utsrelease.h> 32 #include <linux/utsname.h> 33 #include <linux/init.h> 34 #include <linux/list.h> 35 #include <linux/slab.h> 36 #include <linux/kthread.h> 37 #include <linux/types.h> 38 #include <linux/string.h> 39 #include <linux/configfs.h> 40 #include <linux/ctype.h> 41 #include <asm/unaligned.h> 42 #include <scsi/scsi.h> 43 #include <scsi/scsi_host.h> 44 #include <scsi/scsi_device.h> 45 #include <scsi/scsi_cmnd.h> 46 #include <target/target_core_base.h> 47 #include <target/target_core_fabric.h> 48 #include <target/target_core_fabric_configfs.h> 49 #include <target/target_core_configfs.h> 50 #include <target/configfs_macros.h> 51 52 #include "qla_def.h" 53 #include "qla_target.h" 54 #include "tcm_qla2xxx.h" 55 56 struct workqueue_struct *tcm_qla2xxx_free_wq; 57 struct workqueue_struct *tcm_qla2xxx_cmd_wq; 58 59 static int tcm_qla2xxx_check_true(struct se_portal_group *se_tpg) 60 { 61 return 1; 62 } 63 64 static int tcm_qla2xxx_check_false(struct se_portal_group *se_tpg) 65 { 66 return 0; 67 } 68 69 /* 70 * Parse WWN. 71 * If strict, we require lower-case hex and colon separators to be sure 72 * the name is the same as what would be generated by ft_format_wwn() 73 * so the name and wwn are mapped one-to-one. 74 */ 75 static ssize_t tcm_qla2xxx_parse_wwn(const char *name, u64 *wwn, int strict) 76 { 77 const char *cp; 78 char c; 79 u32 nibble; 80 u32 byte = 0; 81 u32 pos = 0; 82 u32 err; 83 84 *wwn = 0; 85 for (cp = name; cp < &name[TCM_QLA2XXX_NAMELEN - 1]; cp++) { 86 c = *cp; 87 if (c == '\n' && cp[1] == '\0') 88 continue; 89 if (strict && pos++ == 2 && byte++ < 7) { 90 pos = 0; 91 if (c == ':') 92 continue; 93 err = 1; 94 goto fail; 95 } 96 if (c == '\0') { 97 err = 2; 98 if (strict && byte != 8) 99 goto fail; 100 return cp - name; 101 } 102 err = 3; 103 if (isdigit(c)) 104 nibble = c - '0'; 105 else if (isxdigit(c) && (islower(c) || !strict)) 106 nibble = tolower(c) - 'a' + 10; 107 else 108 goto fail; 109 *wwn = (*wwn << 4) | nibble; 110 } 111 err = 4; 112 fail: 113 pr_debug("err %u len %zu pos %u byte %u\n", 114 err, cp - name, pos, byte); 115 return -1; 116 } 117 118 static ssize_t tcm_qla2xxx_format_wwn(char *buf, size_t len, u64 wwn) 119 { 120 u8 b[8]; 121 122 put_unaligned_be64(wwn, b); 123 return snprintf(buf, len, 124 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x", 125 b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7]); 126 } 127 128 static char *tcm_qla2xxx_get_fabric_name(void) 129 { 130 return "qla2xxx"; 131 } 132 133 /* 134 * From drivers/scsi/scsi_transport_fc.c:fc_parse_wwn 135 */ 136 static int tcm_qla2xxx_npiv_extract_wwn(const char *ns, u64 *nm) 137 { 138 unsigned int i, j; 139 u8 wwn[8]; 140 141 memset(wwn, 0, sizeof(wwn)); 142 143 /* Validate and store the new name */ 144 for (i = 0, j = 0; i < 16; i++) { 145 int value; 146 147 value = hex_to_bin(*ns++); 148 if (value >= 0) 149 j = (j << 4) | value; 150 else 151 return -EINVAL; 152 153 if (i % 2) { 154 wwn[i/2] = j & 0xff; 155 j = 0; 156 } 157 } 158 159 *nm = wwn_to_u64(wwn); 160 return 0; 161 } 162 163 /* 164 * This parsing logic follows drivers/scsi/scsi_transport_fc.c: 165 * store_fc_host_vport_create() 166 */ 167 static int tcm_qla2xxx_npiv_parse_wwn( 168 const char *name, 169 size_t count, 170 u64 *wwpn, 171 u64 *wwnn) 172 { 173 unsigned int cnt = count; 174 int rc; 175 176 *wwpn = 0; 177 *wwnn = 0; 178 179 /* count may include a LF at end of string */ 180 if (name[cnt-1] == '\n') 181 cnt--; 182 183 /* validate we have enough characters for WWPN */ 184 if ((cnt != (16+1+16)) || (name[16] != ':')) 185 return -EINVAL; 186 187 rc = tcm_qla2xxx_npiv_extract_wwn(&name[0], wwpn); 188 if (rc != 0) 189 return rc; 190 191 rc = tcm_qla2xxx_npiv_extract_wwn(&name[17], wwnn); 192 if (rc != 0) 193 return rc; 194 195 return 0; 196 } 197 198 static ssize_t tcm_qla2xxx_npiv_format_wwn(char *buf, size_t len, 199 u64 wwpn, u64 wwnn) 200 { 201 u8 b[8], b2[8]; 202 203 put_unaligned_be64(wwpn, b); 204 put_unaligned_be64(wwnn, b2); 205 return snprintf(buf, len, 206 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x," 207 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x", 208 b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7], 209 b2[0], b2[1], b2[2], b2[3], b2[4], b2[5], b2[6], b2[7]); 210 } 211 212 static char *tcm_qla2xxx_npiv_get_fabric_name(void) 213 { 214 return "qla2xxx_npiv"; 215 } 216 217 static u8 tcm_qla2xxx_get_fabric_proto_ident(struct se_portal_group *se_tpg) 218 { 219 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 220 struct tcm_qla2xxx_tpg, se_tpg); 221 struct tcm_qla2xxx_lport *lport = tpg->lport; 222 u8 proto_id; 223 224 switch (lport->lport_proto_id) { 225 case SCSI_PROTOCOL_FCP: 226 default: 227 proto_id = fc_get_fabric_proto_ident(se_tpg); 228 break; 229 } 230 231 return proto_id; 232 } 233 234 static char *tcm_qla2xxx_get_fabric_wwn(struct se_portal_group *se_tpg) 235 { 236 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 237 struct tcm_qla2xxx_tpg, se_tpg); 238 struct tcm_qla2xxx_lport *lport = tpg->lport; 239 240 return &lport->lport_name[0]; 241 } 242 243 static char *tcm_qla2xxx_npiv_get_fabric_wwn(struct se_portal_group *se_tpg) 244 { 245 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 246 struct tcm_qla2xxx_tpg, se_tpg); 247 struct tcm_qla2xxx_lport *lport = tpg->lport; 248 249 return &lport->lport_npiv_name[0]; 250 } 251 252 static u16 tcm_qla2xxx_get_tag(struct se_portal_group *se_tpg) 253 { 254 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 255 struct tcm_qla2xxx_tpg, se_tpg); 256 return tpg->lport_tpgt; 257 } 258 259 static u32 tcm_qla2xxx_get_default_depth(struct se_portal_group *se_tpg) 260 { 261 return 1; 262 } 263 264 static u32 tcm_qla2xxx_get_pr_transport_id( 265 struct se_portal_group *se_tpg, 266 struct se_node_acl *se_nacl, 267 struct t10_pr_registration *pr_reg, 268 int *format_code, 269 unsigned char *buf) 270 { 271 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 272 struct tcm_qla2xxx_tpg, se_tpg); 273 struct tcm_qla2xxx_lport *lport = tpg->lport; 274 int ret = 0; 275 276 switch (lport->lport_proto_id) { 277 case SCSI_PROTOCOL_FCP: 278 default: 279 ret = fc_get_pr_transport_id(se_tpg, se_nacl, pr_reg, 280 format_code, buf); 281 break; 282 } 283 284 return ret; 285 } 286 287 static u32 tcm_qla2xxx_get_pr_transport_id_len( 288 struct se_portal_group *se_tpg, 289 struct se_node_acl *se_nacl, 290 struct t10_pr_registration *pr_reg, 291 int *format_code) 292 { 293 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 294 struct tcm_qla2xxx_tpg, se_tpg); 295 struct tcm_qla2xxx_lport *lport = tpg->lport; 296 int ret = 0; 297 298 switch (lport->lport_proto_id) { 299 case SCSI_PROTOCOL_FCP: 300 default: 301 ret = fc_get_pr_transport_id_len(se_tpg, se_nacl, pr_reg, 302 format_code); 303 break; 304 } 305 306 return ret; 307 } 308 309 static char *tcm_qla2xxx_parse_pr_out_transport_id( 310 struct se_portal_group *se_tpg, 311 const char *buf, 312 u32 *out_tid_len, 313 char **port_nexus_ptr) 314 { 315 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 316 struct tcm_qla2xxx_tpg, se_tpg); 317 struct tcm_qla2xxx_lport *lport = tpg->lport; 318 char *tid = NULL; 319 320 switch (lport->lport_proto_id) { 321 case SCSI_PROTOCOL_FCP: 322 default: 323 tid = fc_parse_pr_out_transport_id(se_tpg, buf, out_tid_len, 324 port_nexus_ptr); 325 break; 326 } 327 328 return tid; 329 } 330 331 static int tcm_qla2xxx_check_demo_mode(struct se_portal_group *se_tpg) 332 { 333 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 334 struct tcm_qla2xxx_tpg, se_tpg); 335 336 return QLA_TPG_ATTRIB(tpg)->generate_node_acls; 337 } 338 339 static int tcm_qla2xxx_check_demo_mode_cache(struct se_portal_group *se_tpg) 340 { 341 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 342 struct tcm_qla2xxx_tpg, se_tpg); 343 344 return QLA_TPG_ATTRIB(tpg)->cache_dynamic_acls; 345 } 346 347 static int tcm_qla2xxx_check_demo_write_protect(struct se_portal_group *se_tpg) 348 { 349 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 350 struct tcm_qla2xxx_tpg, se_tpg); 351 352 return QLA_TPG_ATTRIB(tpg)->demo_mode_write_protect; 353 } 354 355 static int tcm_qla2xxx_check_prod_write_protect(struct se_portal_group *se_tpg) 356 { 357 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 358 struct tcm_qla2xxx_tpg, se_tpg); 359 360 return QLA_TPG_ATTRIB(tpg)->prod_mode_write_protect; 361 } 362 363 static struct se_node_acl *tcm_qla2xxx_alloc_fabric_acl( 364 struct se_portal_group *se_tpg) 365 { 366 struct tcm_qla2xxx_nacl *nacl; 367 368 nacl = kzalloc(sizeof(struct tcm_qla2xxx_nacl), GFP_KERNEL); 369 if (!nacl) { 370 pr_err("Unable to alocate struct tcm_qla2xxx_nacl\n"); 371 return NULL; 372 } 373 374 return &nacl->se_node_acl; 375 } 376 377 static void tcm_qla2xxx_release_fabric_acl( 378 struct se_portal_group *se_tpg, 379 struct se_node_acl *se_nacl) 380 { 381 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl, 382 struct tcm_qla2xxx_nacl, se_node_acl); 383 kfree(nacl); 384 } 385 386 static u32 tcm_qla2xxx_tpg_get_inst_index(struct se_portal_group *se_tpg) 387 { 388 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 389 struct tcm_qla2xxx_tpg, se_tpg); 390 391 return tpg->lport_tpgt; 392 } 393 394 static void tcm_qla2xxx_complete_mcmd(struct work_struct *work) 395 { 396 struct qla_tgt_mgmt_cmd *mcmd = container_of(work, 397 struct qla_tgt_mgmt_cmd, free_work); 398 399 transport_generic_free_cmd(&mcmd->se_cmd, 0); 400 } 401 402 /* 403 * Called from qla_target_template->free_mcmd(), and will call 404 * tcm_qla2xxx_release_cmd() via normal struct target_core_fabric_ops 405 * release callback. qla_hw_data->hardware_lock is expected to be held 406 */ 407 static void tcm_qla2xxx_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd) 408 { 409 INIT_WORK(&mcmd->free_work, tcm_qla2xxx_complete_mcmd); 410 queue_work(tcm_qla2xxx_free_wq, &mcmd->free_work); 411 } 412 413 static void tcm_qla2xxx_complete_free(struct work_struct *work) 414 { 415 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 416 417 transport_generic_free_cmd(&cmd->se_cmd, 0); 418 } 419 420 /* 421 * Called from qla_target_template->free_cmd(), and will call 422 * tcm_qla2xxx_release_cmd via normal struct target_core_fabric_ops 423 * release callback. qla_hw_data->hardware_lock is expected to be held 424 */ 425 static void tcm_qla2xxx_free_cmd(struct qla_tgt_cmd *cmd) 426 { 427 INIT_WORK(&cmd->work, tcm_qla2xxx_complete_free); 428 queue_work(tcm_qla2xxx_free_wq, &cmd->work); 429 } 430 431 /* 432 * Called from struct target_core_fabric_ops->check_stop_free() context 433 */ 434 static int tcm_qla2xxx_check_stop_free(struct se_cmd *se_cmd) 435 { 436 return target_put_sess_cmd(se_cmd->se_sess, se_cmd); 437 } 438 439 /* tcm_qla2xxx_release_cmd - Callback from TCM Core to release underlying 440 * fabric descriptor @se_cmd command to release 441 */ 442 static void tcm_qla2xxx_release_cmd(struct se_cmd *se_cmd) 443 { 444 struct qla_tgt_cmd *cmd; 445 446 if (se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) { 447 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd, 448 struct qla_tgt_mgmt_cmd, se_cmd); 449 qlt_free_mcmd(mcmd); 450 return; 451 } 452 453 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd); 454 qlt_free_cmd(cmd); 455 } 456 457 static int tcm_qla2xxx_shutdown_session(struct se_session *se_sess) 458 { 459 struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr; 460 struct scsi_qla_host *vha; 461 unsigned long flags; 462 463 BUG_ON(!sess); 464 vha = sess->vha; 465 466 spin_lock_irqsave(&vha->hw->hardware_lock, flags); 467 target_sess_cmd_list_set_waiting(se_sess); 468 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags); 469 470 return 1; 471 } 472 473 static void tcm_qla2xxx_close_session(struct se_session *se_sess) 474 { 475 struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr; 476 struct scsi_qla_host *vha; 477 unsigned long flags; 478 479 BUG_ON(!sess); 480 vha = sess->vha; 481 482 spin_lock_irqsave(&vha->hw->hardware_lock, flags); 483 qlt_unreg_sess(sess); 484 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags); 485 } 486 487 static u32 tcm_qla2xxx_sess_get_index(struct se_session *se_sess) 488 { 489 return 0; 490 } 491 492 /* 493 * The LIO target core uses DMA_TO_DEVICE to mean that data is going 494 * to the target (eg handling a WRITE) and DMA_FROM_DEVICE to mean 495 * that data is coming from the target (eg handling a READ). However, 496 * this is just the opposite of what we have to tell the DMA mapping 497 * layer -- eg when handling a READ, the HBA will have to DMA the data 498 * out of memory so it can send it to the initiator, which means we 499 * need to use DMA_TO_DEVICE when we map the data. 500 */ 501 static enum dma_data_direction tcm_qla2xxx_mapping_dir(struct se_cmd *se_cmd) 502 { 503 if (se_cmd->se_cmd_flags & SCF_BIDI) 504 return DMA_BIDIRECTIONAL; 505 506 switch (se_cmd->data_direction) { 507 case DMA_TO_DEVICE: 508 return DMA_FROM_DEVICE; 509 case DMA_FROM_DEVICE: 510 return DMA_TO_DEVICE; 511 case DMA_NONE: 512 default: 513 return DMA_NONE; 514 } 515 } 516 517 static int tcm_qla2xxx_write_pending(struct se_cmd *se_cmd) 518 { 519 struct qla_tgt_cmd *cmd = container_of(se_cmd, 520 struct qla_tgt_cmd, se_cmd); 521 522 cmd->bufflen = se_cmd->data_length; 523 cmd->dma_data_direction = tcm_qla2xxx_mapping_dir(se_cmd); 524 525 cmd->sg_cnt = se_cmd->t_data_nents; 526 cmd->sg = se_cmd->t_data_sg; 527 528 /* 529 * qla_target.c:qlt_rdy_to_xfer() will call pci_map_sg() to setup 530 * the SGL mappings into PCIe memory for incoming FCP WRITE data. 531 */ 532 return qlt_rdy_to_xfer(cmd); 533 } 534 535 static int tcm_qla2xxx_write_pending_status(struct se_cmd *se_cmd) 536 { 537 unsigned long flags; 538 /* 539 * Check for WRITE_PENDING status to determine if we need to wait for 540 * CTIO aborts to be posted via hardware in tcm_qla2xxx_handle_data(). 541 */ 542 spin_lock_irqsave(&se_cmd->t_state_lock, flags); 543 if (se_cmd->t_state == TRANSPORT_WRITE_PENDING || 544 se_cmd->t_state == TRANSPORT_COMPLETE_QF_WP) { 545 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags); 546 wait_for_completion_timeout(&se_cmd->t_transport_stop_comp, 547 3000); 548 return 0; 549 } 550 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags); 551 552 return 0; 553 } 554 555 static void tcm_qla2xxx_set_default_node_attrs(struct se_node_acl *nacl) 556 { 557 return; 558 } 559 560 static u32 tcm_qla2xxx_get_task_tag(struct se_cmd *se_cmd) 561 { 562 struct qla_tgt_cmd *cmd = container_of(se_cmd, 563 struct qla_tgt_cmd, se_cmd); 564 565 return cmd->tag; 566 } 567 568 static int tcm_qla2xxx_get_cmd_state(struct se_cmd *se_cmd) 569 { 570 return 0; 571 } 572 573 /* 574 * Called from process context in qla_target.c:qlt_do_work() code 575 */ 576 static int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd, 577 unsigned char *cdb, uint32_t data_length, int fcp_task_attr, 578 int data_dir, int bidi) 579 { 580 struct se_cmd *se_cmd = &cmd->se_cmd; 581 struct se_session *se_sess; 582 struct qla_tgt_sess *sess; 583 int flags = TARGET_SCF_ACK_KREF; 584 585 if (bidi) 586 flags |= TARGET_SCF_BIDI_OP; 587 588 sess = cmd->sess; 589 if (!sess) { 590 pr_err("Unable to locate struct qla_tgt_sess from qla_tgt_cmd\n"); 591 return -EINVAL; 592 } 593 594 se_sess = sess->se_sess; 595 if (!se_sess) { 596 pr_err("Unable to locate active struct se_session\n"); 597 return -EINVAL; 598 } 599 600 return target_submit_cmd(se_cmd, se_sess, cdb, &cmd->sense_buffer[0], 601 cmd->unpacked_lun, data_length, fcp_task_attr, 602 data_dir, flags); 603 } 604 605 static void tcm_qla2xxx_handle_data_work(struct work_struct *work) 606 { 607 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 608 609 /* 610 * Ensure that the complete FCP WRITE payload has been received. 611 * Otherwise return an exception via CHECK_CONDITION status. 612 */ 613 if (!cmd->write_data_transferred) { 614 /* 615 * Check if se_cmd has already been aborted via LUN_RESET, and 616 * waiting upon completion in tcm_qla2xxx_write_pending_status() 617 */ 618 if (cmd->se_cmd.transport_state & CMD_T_ABORTED) { 619 complete(&cmd->se_cmd.t_transport_stop_comp); 620 return; 621 } 622 623 cmd->se_cmd.scsi_sense_reason = TCM_CHECK_CONDITION_ABORT_CMD; 624 transport_generic_request_failure(&cmd->se_cmd); 625 return; 626 } 627 628 return target_execute_cmd(&cmd->se_cmd); 629 } 630 631 /* 632 * Called from qla_target.c:qlt_do_ctio_completion() 633 */ 634 static void tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd) 635 { 636 INIT_WORK(&cmd->work, tcm_qla2xxx_handle_data_work); 637 queue_work(tcm_qla2xxx_free_wq, &cmd->work); 638 } 639 640 /* 641 * Called from qla_target.c:qlt_issue_task_mgmt() 642 */ 643 static int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *mcmd, uint32_t lun, 644 uint8_t tmr_func, uint32_t tag) 645 { 646 struct qla_tgt_sess *sess = mcmd->sess; 647 struct se_cmd *se_cmd = &mcmd->se_cmd; 648 649 return target_submit_tmr(se_cmd, sess->se_sess, NULL, lun, mcmd, 650 tmr_func, GFP_ATOMIC, tag, TARGET_SCF_ACK_KREF); 651 } 652 653 static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd) 654 { 655 struct qla_tgt_cmd *cmd = container_of(se_cmd, 656 struct qla_tgt_cmd, se_cmd); 657 658 cmd->bufflen = se_cmd->data_length; 659 cmd->dma_data_direction = tcm_qla2xxx_mapping_dir(se_cmd); 660 cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED); 661 662 cmd->sg_cnt = se_cmd->t_data_nents; 663 cmd->sg = se_cmd->t_data_sg; 664 cmd->offset = 0; 665 666 /* 667 * Now queue completed DATA_IN the qla2xxx LLD and response ring 668 */ 669 return qlt_xmit_response(cmd, QLA_TGT_XMIT_DATA|QLA_TGT_XMIT_STATUS, 670 se_cmd->scsi_status); 671 } 672 673 static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd) 674 { 675 struct qla_tgt_cmd *cmd = container_of(se_cmd, 676 struct qla_tgt_cmd, se_cmd); 677 int xmit_type = QLA_TGT_XMIT_STATUS; 678 679 cmd->bufflen = se_cmd->data_length; 680 cmd->sg = NULL; 681 cmd->sg_cnt = 0; 682 cmd->offset = 0; 683 cmd->dma_data_direction = tcm_qla2xxx_mapping_dir(se_cmd); 684 cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED); 685 686 if (se_cmd->data_direction == DMA_FROM_DEVICE) { 687 /* 688 * For FCP_READ with CHECK_CONDITION status, clear cmd->bufflen 689 * for qla_tgt_xmit_response LLD code 690 */ 691 se_cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT; 692 se_cmd->residual_count = se_cmd->data_length; 693 694 cmd->bufflen = 0; 695 } 696 /* 697 * Now queue status response to qla2xxx LLD code and response ring 698 */ 699 return qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status); 700 } 701 702 static int tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd) 703 { 704 struct se_tmr_req *se_tmr = se_cmd->se_tmr_req; 705 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd, 706 struct qla_tgt_mgmt_cmd, se_cmd); 707 708 pr_debug("queue_tm_rsp: mcmd: %p func: 0x%02x response: 0x%02x\n", 709 mcmd, se_tmr->function, se_tmr->response); 710 /* 711 * Do translation between TCM TM response codes and 712 * QLA2xxx FC TM response codes. 713 */ 714 switch (se_tmr->response) { 715 case TMR_FUNCTION_COMPLETE: 716 mcmd->fc_tm_rsp = FC_TM_SUCCESS; 717 break; 718 case TMR_TASK_DOES_NOT_EXIST: 719 mcmd->fc_tm_rsp = FC_TM_BAD_CMD; 720 break; 721 case TMR_FUNCTION_REJECTED: 722 mcmd->fc_tm_rsp = FC_TM_REJECT; 723 break; 724 case TMR_LUN_DOES_NOT_EXIST: 725 default: 726 mcmd->fc_tm_rsp = FC_TM_FAILED; 727 break; 728 } 729 /* 730 * Queue the TM response to QLA2xxx LLD to build a 731 * CTIO response packet. 732 */ 733 qlt_xmit_tm_rsp(mcmd); 734 735 return 0; 736 } 737 738 static u16 tcm_qla2xxx_get_fabric_sense_len(void) 739 { 740 return 0; 741 } 742 743 static u16 tcm_qla2xxx_set_fabric_sense_len(struct se_cmd *se_cmd, 744 u32 sense_length) 745 { 746 return 0; 747 } 748 749 /* Local pointer to allocated TCM configfs fabric module */ 750 struct target_fabric_configfs *tcm_qla2xxx_fabric_configfs; 751 struct target_fabric_configfs *tcm_qla2xxx_npiv_fabric_configfs; 752 753 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *, 754 struct tcm_qla2xxx_nacl *, struct qla_tgt_sess *); 755 /* 756 * Expected to be called with struct qla_hw_data->hardware_lock held 757 */ 758 static void tcm_qla2xxx_clear_nacl_from_fcport_map(struct qla_tgt_sess *sess) 759 { 760 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl; 761 struct se_portal_group *se_tpg = se_nacl->se_tpg; 762 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn; 763 struct tcm_qla2xxx_lport *lport = container_of(se_wwn, 764 struct tcm_qla2xxx_lport, lport_wwn); 765 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl, 766 struct tcm_qla2xxx_nacl, se_node_acl); 767 void *node; 768 769 pr_debug("fc_rport domain: port_id 0x%06x\n", nacl->nport_id); 770 771 node = btree_remove32(&lport->lport_fcport_map, nacl->nport_id); 772 WARN_ON(node && (node != se_nacl)); 773 774 pr_debug("Removed from fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%06x\n", 775 se_nacl, nacl->nport_wwnn, nacl->nport_id); 776 /* 777 * Now clear the se_nacl and session pointers from our HW lport lookup 778 * table mapping for this initiator's fabric S_ID and LOOP_ID entries. 779 * 780 * This is done ahead of callbacks into tcm_qla2xxx_free_session() -> 781 * target_wait_for_sess_cmds() before the session waits for outstanding 782 * I/O to complete, to avoid a race between session shutdown execution 783 * and incoming ATIOs or TMRs picking up a stale se_node_act reference. 784 */ 785 tcm_qla2xxx_clear_sess_lookup(lport, nacl, sess); 786 } 787 788 static void tcm_qla2xxx_release_session(struct kref *kref) 789 { 790 struct se_session *se_sess = container_of(kref, 791 struct se_session, sess_kref); 792 793 qlt_unreg_sess(se_sess->fabric_sess_ptr); 794 } 795 796 static void tcm_qla2xxx_put_session(struct se_session *se_sess) 797 { 798 struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr; 799 struct qla_hw_data *ha = sess->vha->hw; 800 unsigned long flags; 801 802 spin_lock_irqsave(&ha->hardware_lock, flags); 803 kref_put(&se_sess->sess_kref, tcm_qla2xxx_release_session); 804 spin_unlock_irqrestore(&ha->hardware_lock, flags); 805 } 806 807 static void tcm_qla2xxx_put_sess(struct qla_tgt_sess *sess) 808 { 809 tcm_qla2xxx_put_session(sess->se_sess); 810 } 811 812 static void tcm_qla2xxx_shutdown_sess(struct qla_tgt_sess *sess) 813 { 814 tcm_qla2xxx_shutdown_session(sess->se_sess); 815 } 816 817 static struct se_node_acl *tcm_qla2xxx_make_nodeacl( 818 struct se_portal_group *se_tpg, 819 struct config_group *group, 820 const char *name) 821 { 822 struct se_node_acl *se_nacl, *se_nacl_new; 823 struct tcm_qla2xxx_nacl *nacl; 824 u64 wwnn; 825 u32 qla2xxx_nexus_depth; 826 827 if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0) 828 return ERR_PTR(-EINVAL); 829 830 se_nacl_new = tcm_qla2xxx_alloc_fabric_acl(se_tpg); 831 if (!se_nacl_new) 832 return ERR_PTR(-ENOMEM); 833 /* #warning FIXME: Hardcoded qla2xxx_nexus depth in tcm_qla2xxx_make_nodeacl */ 834 qla2xxx_nexus_depth = 1; 835 836 /* 837 * se_nacl_new may be released by core_tpg_add_initiator_node_acl() 838 * when converting a NodeACL from demo mode -> explict 839 */ 840 se_nacl = core_tpg_add_initiator_node_acl(se_tpg, se_nacl_new, 841 name, qla2xxx_nexus_depth); 842 if (IS_ERR(se_nacl)) { 843 tcm_qla2xxx_release_fabric_acl(se_tpg, se_nacl_new); 844 return se_nacl; 845 } 846 /* 847 * Locate our struct tcm_qla2xxx_nacl and set the FC Nport WWPN 848 */ 849 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 850 nacl->nport_wwnn = wwnn; 851 tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn); 852 853 return se_nacl; 854 } 855 856 static void tcm_qla2xxx_drop_nodeacl(struct se_node_acl *se_acl) 857 { 858 struct se_portal_group *se_tpg = se_acl->se_tpg; 859 struct tcm_qla2xxx_nacl *nacl = container_of(se_acl, 860 struct tcm_qla2xxx_nacl, se_node_acl); 861 862 core_tpg_del_initiator_node_acl(se_tpg, se_acl, 1); 863 kfree(nacl); 864 } 865 866 /* Start items for tcm_qla2xxx_tpg_attrib_cit */ 867 868 #define DEF_QLA_TPG_ATTRIB(name) \ 869 \ 870 static ssize_t tcm_qla2xxx_tpg_attrib_show_##name( \ 871 struct se_portal_group *se_tpg, \ 872 char *page) \ 873 { \ 874 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \ 875 struct tcm_qla2xxx_tpg, se_tpg); \ 876 \ 877 return sprintf(page, "%u\n", QLA_TPG_ATTRIB(tpg)->name); \ 878 } \ 879 \ 880 static ssize_t tcm_qla2xxx_tpg_attrib_store_##name( \ 881 struct se_portal_group *se_tpg, \ 882 const char *page, \ 883 size_t count) \ 884 { \ 885 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \ 886 struct tcm_qla2xxx_tpg, se_tpg); \ 887 unsigned long val; \ 888 int ret; \ 889 \ 890 ret = kstrtoul(page, 0, &val); \ 891 if (ret < 0) { \ 892 pr_err("kstrtoul() failed with" \ 893 " ret: %d\n", ret); \ 894 return -EINVAL; \ 895 } \ 896 ret = tcm_qla2xxx_set_attrib_##name(tpg, val); \ 897 \ 898 return (!ret) ? count : -EINVAL; \ 899 } 900 901 #define DEF_QLA_TPG_ATTR_BOOL(_name) \ 902 \ 903 static int tcm_qla2xxx_set_attrib_##_name( \ 904 struct tcm_qla2xxx_tpg *tpg, \ 905 unsigned long val) \ 906 { \ 907 struct tcm_qla2xxx_tpg_attrib *a = &tpg->tpg_attrib; \ 908 \ 909 if ((val != 0) && (val != 1)) { \ 910 pr_err("Illegal boolean value %lu\n", val); \ 911 return -EINVAL; \ 912 } \ 913 \ 914 a->_name = val; \ 915 return 0; \ 916 } 917 918 #define QLA_TPG_ATTR(_name, _mode) \ 919 TF_TPG_ATTRIB_ATTR(tcm_qla2xxx, _name, _mode); 920 921 /* 922 * Define tcm_qla2xxx_tpg_attrib_s_generate_node_acls 923 */ 924 DEF_QLA_TPG_ATTR_BOOL(generate_node_acls); 925 DEF_QLA_TPG_ATTRIB(generate_node_acls); 926 QLA_TPG_ATTR(generate_node_acls, S_IRUGO | S_IWUSR); 927 928 /* 929 Define tcm_qla2xxx_attrib_s_cache_dynamic_acls 930 */ 931 DEF_QLA_TPG_ATTR_BOOL(cache_dynamic_acls); 932 DEF_QLA_TPG_ATTRIB(cache_dynamic_acls); 933 QLA_TPG_ATTR(cache_dynamic_acls, S_IRUGO | S_IWUSR); 934 935 /* 936 * Define tcm_qla2xxx_tpg_attrib_s_demo_mode_write_protect 937 */ 938 DEF_QLA_TPG_ATTR_BOOL(demo_mode_write_protect); 939 DEF_QLA_TPG_ATTRIB(demo_mode_write_protect); 940 QLA_TPG_ATTR(demo_mode_write_protect, S_IRUGO | S_IWUSR); 941 942 /* 943 * Define tcm_qla2xxx_tpg_attrib_s_prod_mode_write_protect 944 */ 945 DEF_QLA_TPG_ATTR_BOOL(prod_mode_write_protect); 946 DEF_QLA_TPG_ATTRIB(prod_mode_write_protect); 947 QLA_TPG_ATTR(prod_mode_write_protect, S_IRUGO | S_IWUSR); 948 949 static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = { 950 &tcm_qla2xxx_tpg_attrib_generate_node_acls.attr, 951 &tcm_qla2xxx_tpg_attrib_cache_dynamic_acls.attr, 952 &tcm_qla2xxx_tpg_attrib_demo_mode_write_protect.attr, 953 &tcm_qla2xxx_tpg_attrib_prod_mode_write_protect.attr, 954 NULL, 955 }; 956 957 /* End items for tcm_qla2xxx_tpg_attrib_cit */ 958 959 static ssize_t tcm_qla2xxx_tpg_show_enable( 960 struct se_portal_group *se_tpg, 961 char *page) 962 { 963 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 964 struct tcm_qla2xxx_tpg, se_tpg); 965 966 return snprintf(page, PAGE_SIZE, "%d\n", 967 atomic_read(&tpg->lport_tpg_enabled)); 968 } 969 970 static ssize_t tcm_qla2xxx_tpg_store_enable( 971 struct se_portal_group *se_tpg, 972 const char *page, 973 size_t count) 974 { 975 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn; 976 struct tcm_qla2xxx_lport *lport = container_of(se_wwn, 977 struct tcm_qla2xxx_lport, lport_wwn); 978 struct scsi_qla_host *vha = lport->qla_vha; 979 struct qla_hw_data *ha = vha->hw; 980 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 981 struct tcm_qla2xxx_tpg, se_tpg); 982 unsigned long op; 983 int rc; 984 985 rc = kstrtoul(page, 0, &op); 986 if (rc < 0) { 987 pr_err("kstrtoul() returned %d\n", rc); 988 return -EINVAL; 989 } 990 if ((op != 1) && (op != 0)) { 991 pr_err("Illegal value for tpg_enable: %lu\n", op); 992 return -EINVAL; 993 } 994 995 if (op) { 996 atomic_set(&tpg->lport_tpg_enabled, 1); 997 qlt_enable_vha(vha); 998 } else { 999 if (!ha->tgt.qla_tgt) { 1000 pr_err("truct qla_hw_data *ha->tgt.qla_tgt is NULL\n"); 1001 return -ENODEV; 1002 } 1003 atomic_set(&tpg->lport_tpg_enabled, 0); 1004 qlt_stop_phase1(ha->tgt.qla_tgt); 1005 } 1006 1007 return count; 1008 } 1009 1010 TF_TPG_BASE_ATTR(tcm_qla2xxx, enable, S_IRUGO | S_IWUSR); 1011 1012 static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = { 1013 &tcm_qla2xxx_tpg_enable.attr, 1014 NULL, 1015 }; 1016 1017 static struct se_portal_group *tcm_qla2xxx_make_tpg( 1018 struct se_wwn *wwn, 1019 struct config_group *group, 1020 const char *name) 1021 { 1022 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1023 struct tcm_qla2xxx_lport, lport_wwn); 1024 struct tcm_qla2xxx_tpg *tpg; 1025 unsigned long tpgt; 1026 int ret; 1027 1028 if (strstr(name, "tpgt_") != name) 1029 return ERR_PTR(-EINVAL); 1030 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX) 1031 return ERR_PTR(-EINVAL); 1032 1033 if (!lport->qla_npiv_vp && (tpgt != 1)) { 1034 pr_err("In non NPIV mode, a single TPG=1 is used for HW port mappings\n"); 1035 return ERR_PTR(-ENOSYS); 1036 } 1037 1038 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL); 1039 if (!tpg) { 1040 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n"); 1041 return ERR_PTR(-ENOMEM); 1042 } 1043 tpg->lport = lport; 1044 tpg->lport_tpgt = tpgt; 1045 /* 1046 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic 1047 * NodeACLs 1048 */ 1049 QLA_TPG_ATTRIB(tpg)->generate_node_acls = 1; 1050 QLA_TPG_ATTRIB(tpg)->demo_mode_write_protect = 1; 1051 QLA_TPG_ATTRIB(tpg)->cache_dynamic_acls = 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 * Setup local TPG=1 pointer for non NPIV mode. 1061 */ 1062 if (lport->qla_npiv_vp == NULL) 1063 lport->tpg_1 = tpg; 1064 1065 return &tpg->se_tpg; 1066 } 1067 1068 static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg) 1069 { 1070 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1071 struct tcm_qla2xxx_tpg, se_tpg); 1072 struct tcm_qla2xxx_lport *lport = tpg->lport; 1073 struct scsi_qla_host *vha = lport->qla_vha; 1074 struct qla_hw_data *ha = vha->hw; 1075 /* 1076 * Call into qla2x_target.c LLD logic to shutdown the active 1077 * FC Nexuses and disable target mode operation for this qla_hw_data 1078 */ 1079 if (ha->tgt.qla_tgt && !ha->tgt.qla_tgt->tgt_stop) 1080 qlt_stop_phase1(ha->tgt.qla_tgt); 1081 1082 core_tpg_deregister(se_tpg); 1083 /* 1084 * Clear local TPG=1 pointer for non NPIV mode. 1085 */ 1086 if (lport->qla_npiv_vp == NULL) 1087 lport->tpg_1 = NULL; 1088 1089 kfree(tpg); 1090 } 1091 1092 static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg( 1093 struct se_wwn *wwn, 1094 struct config_group *group, 1095 const char *name) 1096 { 1097 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1098 struct tcm_qla2xxx_lport, lport_wwn); 1099 struct tcm_qla2xxx_tpg *tpg; 1100 unsigned long tpgt; 1101 int ret; 1102 1103 if (strstr(name, "tpgt_") != name) 1104 return ERR_PTR(-EINVAL); 1105 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX) 1106 return ERR_PTR(-EINVAL); 1107 1108 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL); 1109 if (!tpg) { 1110 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n"); 1111 return ERR_PTR(-ENOMEM); 1112 } 1113 tpg->lport = lport; 1114 tpg->lport_tpgt = tpgt; 1115 1116 ret = core_tpg_register(&tcm_qla2xxx_npiv_fabric_configfs->tf_ops, wwn, 1117 &tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL); 1118 if (ret < 0) { 1119 kfree(tpg); 1120 return NULL; 1121 } 1122 return &tpg->se_tpg; 1123 } 1124 1125 /* 1126 * Expected to be called with struct qla_hw_data->hardware_lock held 1127 */ 1128 static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_s_id( 1129 scsi_qla_host_t *vha, 1130 const uint8_t *s_id) 1131 { 1132 struct qla_hw_data *ha = vha->hw; 1133 struct tcm_qla2xxx_lport *lport; 1134 struct se_node_acl *se_nacl; 1135 struct tcm_qla2xxx_nacl *nacl; 1136 u32 key; 1137 1138 lport = ha->tgt.target_lport_ptr; 1139 if (!lport) { 1140 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1141 dump_stack(); 1142 return NULL; 1143 } 1144 1145 key = (((unsigned long)s_id[0] << 16) | 1146 ((unsigned long)s_id[1] << 8) | 1147 (unsigned long)s_id[2]); 1148 pr_debug("find_sess_by_s_id: 0x%06x\n", key); 1149 1150 se_nacl = btree_lookup32(&lport->lport_fcport_map, key); 1151 if (!se_nacl) { 1152 pr_debug("Unable to locate s_id: 0x%06x\n", key); 1153 return NULL; 1154 } 1155 pr_debug("find_sess_by_s_id: located se_nacl: %p, initiatorname: %s\n", 1156 se_nacl, se_nacl->initiatorname); 1157 1158 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1159 if (!nacl->qla_tgt_sess) { 1160 pr_err("Unable to locate struct qla_tgt_sess\n"); 1161 return NULL; 1162 } 1163 1164 return nacl->qla_tgt_sess; 1165 } 1166 1167 /* 1168 * Expected to be called with struct qla_hw_data->hardware_lock held 1169 */ 1170 static void tcm_qla2xxx_set_sess_by_s_id( 1171 struct tcm_qla2xxx_lport *lport, 1172 struct se_node_acl *new_se_nacl, 1173 struct tcm_qla2xxx_nacl *nacl, 1174 struct se_session *se_sess, 1175 struct qla_tgt_sess *qla_tgt_sess, 1176 uint8_t *s_id) 1177 { 1178 u32 key; 1179 void *slot; 1180 int rc; 1181 1182 key = (((unsigned long)s_id[0] << 16) | 1183 ((unsigned long)s_id[1] << 8) | 1184 (unsigned long)s_id[2]); 1185 pr_debug("set_sess_by_s_id: %06x\n", key); 1186 1187 slot = btree_lookup32(&lport->lport_fcport_map, key); 1188 if (!slot) { 1189 if (new_se_nacl) { 1190 pr_debug("Setting up new fc_port entry to new_se_nacl\n"); 1191 nacl->nport_id = key; 1192 rc = btree_insert32(&lport->lport_fcport_map, key, 1193 new_se_nacl, GFP_ATOMIC); 1194 if (rc) 1195 printk(KERN_ERR "Unable to insert s_id into fcport_map: %06x\n", 1196 (int)key); 1197 } else { 1198 pr_debug("Wiping nonexisting fc_port entry\n"); 1199 } 1200 1201 qla_tgt_sess->se_sess = se_sess; 1202 nacl->qla_tgt_sess = qla_tgt_sess; 1203 return; 1204 } 1205 1206 if (nacl->qla_tgt_sess) { 1207 if (new_se_nacl == NULL) { 1208 pr_debug("Clearing existing nacl->qla_tgt_sess and fc_port entry\n"); 1209 btree_remove32(&lport->lport_fcport_map, key); 1210 nacl->qla_tgt_sess = NULL; 1211 return; 1212 } 1213 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_port entry\n"); 1214 btree_update32(&lport->lport_fcport_map, key, new_se_nacl); 1215 qla_tgt_sess->se_sess = se_sess; 1216 nacl->qla_tgt_sess = qla_tgt_sess; 1217 return; 1218 } 1219 1220 if (new_se_nacl == NULL) { 1221 pr_debug("Clearing existing fc_port entry\n"); 1222 btree_remove32(&lport->lport_fcport_map, key); 1223 return; 1224 } 1225 1226 pr_debug("Replacing existing fc_port entry w/o active nacl->qla_tgt_sess\n"); 1227 btree_update32(&lport->lport_fcport_map, key, new_se_nacl); 1228 qla_tgt_sess->se_sess = se_sess; 1229 nacl->qla_tgt_sess = qla_tgt_sess; 1230 1231 pr_debug("Setup nacl->qla_tgt_sess %p by s_id for se_nacl: %p, initiatorname: %s\n", 1232 nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname); 1233 } 1234 1235 /* 1236 * Expected to be called with struct qla_hw_data->hardware_lock held 1237 */ 1238 static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_loop_id( 1239 scsi_qla_host_t *vha, 1240 const uint16_t loop_id) 1241 { 1242 struct qla_hw_data *ha = vha->hw; 1243 struct tcm_qla2xxx_lport *lport; 1244 struct se_node_acl *se_nacl; 1245 struct tcm_qla2xxx_nacl *nacl; 1246 struct tcm_qla2xxx_fc_loopid *fc_loopid; 1247 1248 lport = ha->tgt.target_lport_ptr; 1249 if (!lport) { 1250 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1251 dump_stack(); 1252 return NULL; 1253 } 1254 1255 pr_debug("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id); 1256 1257 fc_loopid = lport->lport_loopid_map + loop_id; 1258 se_nacl = fc_loopid->se_nacl; 1259 if (!se_nacl) { 1260 pr_debug("Unable to locate se_nacl by loop_id: 0x%04x\n", 1261 loop_id); 1262 return NULL; 1263 } 1264 1265 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1266 1267 if (!nacl->qla_tgt_sess) { 1268 pr_err("Unable to locate struct qla_tgt_sess\n"); 1269 return NULL; 1270 } 1271 1272 return nacl->qla_tgt_sess; 1273 } 1274 1275 /* 1276 * Expected to be called with struct qla_hw_data->hardware_lock held 1277 */ 1278 static void tcm_qla2xxx_set_sess_by_loop_id( 1279 struct tcm_qla2xxx_lport *lport, 1280 struct se_node_acl *new_se_nacl, 1281 struct tcm_qla2xxx_nacl *nacl, 1282 struct se_session *se_sess, 1283 struct qla_tgt_sess *qla_tgt_sess, 1284 uint16_t loop_id) 1285 { 1286 struct se_node_acl *saved_nacl; 1287 struct tcm_qla2xxx_fc_loopid *fc_loopid; 1288 1289 pr_debug("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id); 1290 1291 fc_loopid = &((struct tcm_qla2xxx_fc_loopid *) 1292 lport->lport_loopid_map)[loop_id]; 1293 1294 saved_nacl = fc_loopid->se_nacl; 1295 if (!saved_nacl) { 1296 pr_debug("Setting up new fc_loopid->se_nacl to new_se_nacl\n"); 1297 fc_loopid->se_nacl = new_se_nacl; 1298 if (qla_tgt_sess->se_sess != se_sess) 1299 qla_tgt_sess->se_sess = se_sess; 1300 if (nacl->qla_tgt_sess != qla_tgt_sess) 1301 nacl->qla_tgt_sess = qla_tgt_sess; 1302 return; 1303 } 1304 1305 if (nacl->qla_tgt_sess) { 1306 if (new_se_nacl == NULL) { 1307 pr_debug("Clearing nacl->qla_tgt_sess and fc_loopid->se_nacl\n"); 1308 fc_loopid->se_nacl = NULL; 1309 nacl->qla_tgt_sess = NULL; 1310 return; 1311 } 1312 1313 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_loopid->se_nacl\n"); 1314 fc_loopid->se_nacl = new_se_nacl; 1315 if (qla_tgt_sess->se_sess != se_sess) 1316 qla_tgt_sess->se_sess = se_sess; 1317 if (nacl->qla_tgt_sess != qla_tgt_sess) 1318 nacl->qla_tgt_sess = qla_tgt_sess; 1319 return; 1320 } 1321 1322 if (new_se_nacl == NULL) { 1323 pr_debug("Clearing fc_loopid->se_nacl\n"); 1324 fc_loopid->se_nacl = NULL; 1325 return; 1326 } 1327 1328 pr_debug("Replacing existing fc_loopid->se_nacl w/o active nacl->qla_tgt_sess\n"); 1329 fc_loopid->se_nacl = new_se_nacl; 1330 if (qla_tgt_sess->se_sess != se_sess) 1331 qla_tgt_sess->se_sess = se_sess; 1332 if (nacl->qla_tgt_sess != qla_tgt_sess) 1333 nacl->qla_tgt_sess = qla_tgt_sess; 1334 1335 pr_debug("Setup nacl->qla_tgt_sess %p by loop_id for se_nacl: %p, initiatorname: %s\n", 1336 nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname); 1337 } 1338 1339 /* 1340 * Should always be called with qla_hw_data->hardware_lock held. 1341 */ 1342 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *lport, 1343 struct tcm_qla2xxx_nacl *nacl, struct qla_tgt_sess *sess) 1344 { 1345 struct se_session *se_sess = sess->se_sess; 1346 unsigned char be_sid[3]; 1347 1348 be_sid[0] = sess->s_id.b.domain; 1349 be_sid[1] = sess->s_id.b.area; 1350 be_sid[2] = sess->s_id.b.al_pa; 1351 1352 tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess, 1353 sess, be_sid); 1354 tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess, 1355 sess, sess->loop_id); 1356 } 1357 1358 static void tcm_qla2xxx_free_session(struct qla_tgt_sess *sess) 1359 { 1360 struct qla_tgt *tgt = sess->tgt; 1361 struct qla_hw_data *ha = tgt->ha; 1362 struct se_session *se_sess; 1363 struct se_node_acl *se_nacl; 1364 struct tcm_qla2xxx_lport *lport; 1365 struct tcm_qla2xxx_nacl *nacl; 1366 1367 BUG_ON(in_interrupt()); 1368 1369 se_sess = sess->se_sess; 1370 if (!se_sess) { 1371 pr_err("struct qla_tgt_sess->se_sess is NULL\n"); 1372 dump_stack(); 1373 return; 1374 } 1375 se_nacl = se_sess->se_node_acl; 1376 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1377 1378 lport = ha->tgt.target_lport_ptr; 1379 if (!lport) { 1380 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1381 dump_stack(); 1382 return; 1383 } 1384 target_wait_for_sess_cmds(se_sess, 0); 1385 1386 transport_deregister_session_configfs(sess->se_sess); 1387 transport_deregister_session(sess->se_sess); 1388 } 1389 1390 /* 1391 * Called via qlt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl() 1392 * to locate struct se_node_acl 1393 */ 1394 static int tcm_qla2xxx_check_initiator_node_acl( 1395 scsi_qla_host_t *vha, 1396 unsigned char *fc_wwpn, 1397 void *qla_tgt_sess, 1398 uint8_t *s_id, 1399 uint16_t loop_id) 1400 { 1401 struct qla_hw_data *ha = vha->hw; 1402 struct tcm_qla2xxx_lport *lport; 1403 struct tcm_qla2xxx_tpg *tpg; 1404 struct tcm_qla2xxx_nacl *nacl; 1405 struct se_portal_group *se_tpg; 1406 struct se_node_acl *se_nacl; 1407 struct se_session *se_sess; 1408 struct qla_tgt_sess *sess = qla_tgt_sess; 1409 unsigned char port_name[36]; 1410 unsigned long flags; 1411 1412 lport = ha->tgt.target_lport_ptr; 1413 if (!lport) { 1414 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1415 dump_stack(); 1416 return -EINVAL; 1417 } 1418 /* 1419 * Locate the TPG=1 reference.. 1420 */ 1421 tpg = lport->tpg_1; 1422 if (!tpg) { 1423 pr_err("Unable to lcoate struct tcm_qla2xxx_lport->tpg_1\n"); 1424 return -EINVAL; 1425 } 1426 se_tpg = &tpg->se_tpg; 1427 1428 se_sess = transport_init_session(); 1429 if (IS_ERR(se_sess)) { 1430 pr_err("Unable to initialize struct se_session\n"); 1431 return PTR_ERR(se_sess); 1432 } 1433 /* 1434 * Format the FCP Initiator port_name into colon seperated values to 1435 * match the format by tcm_qla2xxx explict ConfigFS NodeACLs. 1436 */ 1437 memset(&port_name, 0, 36); 1438 snprintf(port_name, 36, "%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x", 1439 fc_wwpn[0], fc_wwpn[1], fc_wwpn[2], fc_wwpn[3], fc_wwpn[4], 1440 fc_wwpn[5], fc_wwpn[6], fc_wwpn[7]); 1441 /* 1442 * Locate our struct se_node_acl either from an explict NodeACL created 1443 * via ConfigFS, or via running in TPG demo mode. 1444 */ 1445 se_sess->se_node_acl = core_tpg_check_initiator_node_acl(se_tpg, 1446 port_name); 1447 if (!se_sess->se_node_acl) { 1448 transport_free_session(se_sess); 1449 return -EINVAL; 1450 } 1451 se_nacl = se_sess->se_node_acl; 1452 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1453 /* 1454 * And now setup the new se_nacl and session pointers into our HW lport 1455 * mappings for fabric S_ID and LOOP_ID. 1456 */ 1457 spin_lock_irqsave(&ha->hardware_lock, flags); 1458 tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl, se_sess, 1459 qla_tgt_sess, s_id); 1460 tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl, se_sess, 1461 qla_tgt_sess, loop_id); 1462 spin_unlock_irqrestore(&ha->hardware_lock, flags); 1463 /* 1464 * Finally register the new FC Nexus with TCM 1465 */ 1466 __transport_register_session(se_nacl->se_tpg, se_nacl, se_sess, sess); 1467 1468 return 0; 1469 } 1470 1471 /* 1472 * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path. 1473 */ 1474 static struct qla_tgt_func_tmpl tcm_qla2xxx_template = { 1475 .handle_cmd = tcm_qla2xxx_handle_cmd, 1476 .handle_data = tcm_qla2xxx_handle_data, 1477 .handle_tmr = tcm_qla2xxx_handle_tmr, 1478 .free_cmd = tcm_qla2xxx_free_cmd, 1479 .free_mcmd = tcm_qla2xxx_free_mcmd, 1480 .free_session = tcm_qla2xxx_free_session, 1481 .check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl, 1482 .find_sess_by_s_id = tcm_qla2xxx_find_sess_by_s_id, 1483 .find_sess_by_loop_id = tcm_qla2xxx_find_sess_by_loop_id, 1484 .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map, 1485 .put_sess = tcm_qla2xxx_put_sess, 1486 .shutdown_sess = tcm_qla2xxx_shutdown_sess, 1487 }; 1488 1489 static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport) 1490 { 1491 int rc; 1492 1493 rc = btree_init32(&lport->lport_fcport_map); 1494 if (rc) { 1495 pr_err("Unable to initialize lport->lport_fcport_map btree\n"); 1496 return rc; 1497 } 1498 1499 lport->lport_loopid_map = vmalloc(sizeof(struct tcm_qla2xxx_fc_loopid) * 1500 65536); 1501 if (!lport->lport_loopid_map) { 1502 pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n", 1503 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536); 1504 btree_destroy32(&lport->lport_fcport_map); 1505 return -ENOMEM; 1506 } 1507 memset(lport->lport_loopid_map, 0, sizeof(struct tcm_qla2xxx_fc_loopid) 1508 * 65536); 1509 pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n", 1510 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536); 1511 return 0; 1512 } 1513 1514 static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha) 1515 { 1516 struct qla_hw_data *ha = vha->hw; 1517 struct tcm_qla2xxx_lport *lport; 1518 /* 1519 * Setup local pointer to vha, NPIV VP pointer (if present) and 1520 * vha->tcm_lport pointer 1521 */ 1522 lport = (struct tcm_qla2xxx_lport *)ha->tgt.target_lport_ptr; 1523 lport->qla_vha = vha; 1524 1525 return 0; 1526 } 1527 1528 static struct se_wwn *tcm_qla2xxx_make_lport( 1529 struct target_fabric_configfs *tf, 1530 struct config_group *group, 1531 const char *name) 1532 { 1533 struct tcm_qla2xxx_lport *lport; 1534 u64 wwpn; 1535 int ret = -ENODEV; 1536 1537 if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0) 1538 return ERR_PTR(-EINVAL); 1539 1540 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL); 1541 if (!lport) { 1542 pr_err("Unable to allocate struct tcm_qla2xxx_lport\n"); 1543 return ERR_PTR(-ENOMEM); 1544 } 1545 lport->lport_wwpn = wwpn; 1546 tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN, 1547 wwpn); 1548 1549 ret = tcm_qla2xxx_init_lport(lport); 1550 if (ret != 0) 1551 goto out; 1552 1553 ret = qlt_lport_register(&tcm_qla2xxx_template, wwpn, 1554 tcm_qla2xxx_lport_register_cb, lport); 1555 if (ret != 0) 1556 goto out_lport; 1557 1558 return &lport->lport_wwn; 1559 out_lport: 1560 vfree(lport->lport_loopid_map); 1561 btree_destroy32(&lport->lport_fcport_map); 1562 out: 1563 kfree(lport); 1564 return ERR_PTR(ret); 1565 } 1566 1567 static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn) 1568 { 1569 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1570 struct tcm_qla2xxx_lport, lport_wwn); 1571 struct scsi_qla_host *vha = lport->qla_vha; 1572 struct qla_hw_data *ha = vha->hw; 1573 struct se_node_acl *node; 1574 u32 key = 0; 1575 1576 /* 1577 * Call into qla2x_target.c LLD logic to complete the 1578 * shutdown of struct qla_tgt after the call to 1579 * qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above.. 1580 */ 1581 if (ha->tgt.qla_tgt && !ha->tgt.qla_tgt->tgt_stopped) 1582 qlt_stop_phase2(ha->tgt.qla_tgt); 1583 1584 qlt_lport_deregister(vha); 1585 1586 vfree(lport->lport_loopid_map); 1587 btree_for_each_safe32(&lport->lport_fcport_map, key, node) 1588 btree_remove32(&lport->lport_fcport_map, key); 1589 btree_destroy32(&lport->lport_fcport_map); 1590 kfree(lport); 1591 } 1592 1593 static struct se_wwn *tcm_qla2xxx_npiv_make_lport( 1594 struct target_fabric_configfs *tf, 1595 struct config_group *group, 1596 const char *name) 1597 { 1598 struct tcm_qla2xxx_lport *lport; 1599 u64 npiv_wwpn, npiv_wwnn; 1600 int ret; 1601 1602 if (tcm_qla2xxx_npiv_parse_wwn(name, strlen(name)+1, 1603 &npiv_wwpn, &npiv_wwnn) < 0) 1604 return ERR_PTR(-EINVAL); 1605 1606 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL); 1607 if (!lport) { 1608 pr_err("Unable to allocate struct tcm_qla2xxx_lport for NPIV\n"); 1609 return ERR_PTR(-ENOMEM); 1610 } 1611 lport->lport_npiv_wwpn = npiv_wwpn; 1612 lport->lport_npiv_wwnn = npiv_wwnn; 1613 tcm_qla2xxx_npiv_format_wwn(&lport->lport_npiv_name[0], 1614 TCM_QLA2XXX_NAMELEN, npiv_wwpn, npiv_wwnn); 1615 1616 /* FIXME: tcm_qla2xxx_npiv_make_lport */ 1617 ret = -ENOSYS; 1618 if (ret != 0) 1619 goto out; 1620 1621 return &lport->lport_wwn; 1622 out: 1623 kfree(lport); 1624 return ERR_PTR(ret); 1625 } 1626 1627 static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn) 1628 { 1629 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1630 struct tcm_qla2xxx_lport, lport_wwn); 1631 struct scsi_qla_host *vha = lport->qla_vha; 1632 struct Scsi_Host *sh = vha->host; 1633 /* 1634 * Notify libfc that we want to release the lport->npiv_vport 1635 */ 1636 fc_vport_terminate(lport->npiv_vport); 1637 1638 scsi_host_put(sh); 1639 kfree(lport); 1640 } 1641 1642 1643 static ssize_t tcm_qla2xxx_wwn_show_attr_version( 1644 struct target_fabric_configfs *tf, 1645 char *page) 1646 { 1647 return sprintf(page, 1648 "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s on " 1649 UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname, 1650 utsname()->machine); 1651 } 1652 1653 TF_WWN_ATTR_RO(tcm_qla2xxx, version); 1654 1655 static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = { 1656 &tcm_qla2xxx_wwn_version.attr, 1657 NULL, 1658 }; 1659 1660 static struct target_core_fabric_ops tcm_qla2xxx_ops = { 1661 .get_fabric_name = tcm_qla2xxx_get_fabric_name, 1662 .get_fabric_proto_ident = tcm_qla2xxx_get_fabric_proto_ident, 1663 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn, 1664 .tpg_get_tag = tcm_qla2xxx_get_tag, 1665 .tpg_get_default_depth = tcm_qla2xxx_get_default_depth, 1666 .tpg_get_pr_transport_id = tcm_qla2xxx_get_pr_transport_id, 1667 .tpg_get_pr_transport_id_len = tcm_qla2xxx_get_pr_transport_id_len, 1668 .tpg_parse_pr_out_transport_id = tcm_qla2xxx_parse_pr_out_transport_id, 1669 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode, 1670 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache, 1671 .tpg_check_demo_mode_write_protect = 1672 tcm_qla2xxx_check_demo_write_protect, 1673 .tpg_check_prod_mode_write_protect = 1674 tcm_qla2xxx_check_prod_write_protect, 1675 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_true, 1676 .tpg_alloc_fabric_acl = tcm_qla2xxx_alloc_fabric_acl, 1677 .tpg_release_fabric_acl = tcm_qla2xxx_release_fabric_acl, 1678 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index, 1679 .check_stop_free = tcm_qla2xxx_check_stop_free, 1680 .release_cmd = tcm_qla2xxx_release_cmd, 1681 .put_session = tcm_qla2xxx_put_session, 1682 .shutdown_session = tcm_qla2xxx_shutdown_session, 1683 .close_session = tcm_qla2xxx_close_session, 1684 .sess_get_index = tcm_qla2xxx_sess_get_index, 1685 .sess_get_initiator_sid = NULL, 1686 .write_pending = tcm_qla2xxx_write_pending, 1687 .write_pending_status = tcm_qla2xxx_write_pending_status, 1688 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs, 1689 .get_task_tag = tcm_qla2xxx_get_task_tag, 1690 .get_cmd_state = tcm_qla2xxx_get_cmd_state, 1691 .queue_data_in = tcm_qla2xxx_queue_data_in, 1692 .queue_status = tcm_qla2xxx_queue_status, 1693 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp, 1694 .get_fabric_sense_len = tcm_qla2xxx_get_fabric_sense_len, 1695 .set_fabric_sense_len = tcm_qla2xxx_set_fabric_sense_len, 1696 /* 1697 * Setup function pointers for generic logic in 1698 * target_core_fabric_configfs.c 1699 */ 1700 .fabric_make_wwn = tcm_qla2xxx_make_lport, 1701 .fabric_drop_wwn = tcm_qla2xxx_drop_lport, 1702 .fabric_make_tpg = tcm_qla2xxx_make_tpg, 1703 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg, 1704 .fabric_post_link = NULL, 1705 .fabric_pre_unlink = NULL, 1706 .fabric_make_np = NULL, 1707 .fabric_drop_np = NULL, 1708 .fabric_make_nodeacl = tcm_qla2xxx_make_nodeacl, 1709 .fabric_drop_nodeacl = tcm_qla2xxx_drop_nodeacl, 1710 }; 1711 1712 static struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = { 1713 .get_fabric_name = tcm_qla2xxx_npiv_get_fabric_name, 1714 .get_fabric_proto_ident = tcm_qla2xxx_get_fabric_proto_ident, 1715 .tpg_get_wwn = tcm_qla2xxx_npiv_get_fabric_wwn, 1716 .tpg_get_tag = tcm_qla2xxx_get_tag, 1717 .tpg_get_default_depth = tcm_qla2xxx_get_default_depth, 1718 .tpg_get_pr_transport_id = tcm_qla2xxx_get_pr_transport_id, 1719 .tpg_get_pr_transport_id_len = tcm_qla2xxx_get_pr_transport_id_len, 1720 .tpg_parse_pr_out_transport_id = tcm_qla2xxx_parse_pr_out_transport_id, 1721 .tpg_check_demo_mode = tcm_qla2xxx_check_false, 1722 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_true, 1723 .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_true, 1724 .tpg_check_prod_mode_write_protect = tcm_qla2xxx_check_false, 1725 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_true, 1726 .tpg_alloc_fabric_acl = tcm_qla2xxx_alloc_fabric_acl, 1727 .tpg_release_fabric_acl = tcm_qla2xxx_release_fabric_acl, 1728 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index, 1729 .release_cmd = tcm_qla2xxx_release_cmd, 1730 .put_session = tcm_qla2xxx_put_session, 1731 .shutdown_session = tcm_qla2xxx_shutdown_session, 1732 .close_session = tcm_qla2xxx_close_session, 1733 .sess_get_index = tcm_qla2xxx_sess_get_index, 1734 .sess_get_initiator_sid = NULL, 1735 .write_pending = tcm_qla2xxx_write_pending, 1736 .write_pending_status = tcm_qla2xxx_write_pending_status, 1737 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs, 1738 .get_task_tag = tcm_qla2xxx_get_task_tag, 1739 .get_cmd_state = tcm_qla2xxx_get_cmd_state, 1740 .queue_data_in = tcm_qla2xxx_queue_data_in, 1741 .queue_status = tcm_qla2xxx_queue_status, 1742 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp, 1743 .get_fabric_sense_len = tcm_qla2xxx_get_fabric_sense_len, 1744 .set_fabric_sense_len = tcm_qla2xxx_set_fabric_sense_len, 1745 /* 1746 * Setup function pointers for generic logic in 1747 * target_core_fabric_configfs.c 1748 */ 1749 .fabric_make_wwn = tcm_qla2xxx_npiv_make_lport, 1750 .fabric_drop_wwn = tcm_qla2xxx_npiv_drop_lport, 1751 .fabric_make_tpg = tcm_qla2xxx_npiv_make_tpg, 1752 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg, 1753 .fabric_post_link = NULL, 1754 .fabric_pre_unlink = NULL, 1755 .fabric_make_np = NULL, 1756 .fabric_drop_np = NULL, 1757 .fabric_make_nodeacl = tcm_qla2xxx_make_nodeacl, 1758 .fabric_drop_nodeacl = tcm_qla2xxx_drop_nodeacl, 1759 }; 1760 1761 static int tcm_qla2xxx_register_configfs(void) 1762 { 1763 struct target_fabric_configfs *fabric, *npiv_fabric; 1764 int ret; 1765 1766 pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on " 1767 UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname, 1768 utsname()->machine); 1769 /* 1770 * Register the top level struct config_item_type with TCM core 1771 */ 1772 fabric = target_fabric_configfs_init(THIS_MODULE, "qla2xxx"); 1773 if (IS_ERR(fabric)) { 1774 pr_err("target_fabric_configfs_init() failed\n"); 1775 return PTR_ERR(fabric); 1776 } 1777 /* 1778 * Setup fabric->tf_ops from our local tcm_qla2xxx_ops 1779 */ 1780 fabric->tf_ops = tcm_qla2xxx_ops; 1781 /* 1782 * Setup default attribute lists for various fabric->tf_cit_tmpl 1783 */ 1784 TF_CIT_TMPL(fabric)->tfc_wwn_cit.ct_attrs = tcm_qla2xxx_wwn_attrs; 1785 TF_CIT_TMPL(fabric)->tfc_tpg_base_cit.ct_attrs = tcm_qla2xxx_tpg_attrs; 1786 TF_CIT_TMPL(fabric)->tfc_tpg_attrib_cit.ct_attrs = 1787 tcm_qla2xxx_tpg_attrib_attrs; 1788 TF_CIT_TMPL(fabric)->tfc_tpg_param_cit.ct_attrs = NULL; 1789 TF_CIT_TMPL(fabric)->tfc_tpg_np_base_cit.ct_attrs = NULL; 1790 TF_CIT_TMPL(fabric)->tfc_tpg_nacl_base_cit.ct_attrs = NULL; 1791 TF_CIT_TMPL(fabric)->tfc_tpg_nacl_attrib_cit.ct_attrs = NULL; 1792 TF_CIT_TMPL(fabric)->tfc_tpg_nacl_auth_cit.ct_attrs = NULL; 1793 TF_CIT_TMPL(fabric)->tfc_tpg_nacl_param_cit.ct_attrs = NULL; 1794 /* 1795 * Register the fabric for use within TCM 1796 */ 1797 ret = target_fabric_configfs_register(fabric); 1798 if (ret < 0) { 1799 pr_err("target_fabric_configfs_register() failed for TCM_QLA2XXX\n"); 1800 return ret; 1801 } 1802 /* 1803 * Setup our local pointer to *fabric 1804 */ 1805 tcm_qla2xxx_fabric_configfs = fabric; 1806 pr_debug("TCM_QLA2XXX[0] - Set fabric -> tcm_qla2xxx_fabric_configfs\n"); 1807 1808 /* 1809 * Register the top level struct config_item_type for NPIV with TCM core 1810 */ 1811 npiv_fabric = target_fabric_configfs_init(THIS_MODULE, "qla2xxx_npiv"); 1812 if (IS_ERR(npiv_fabric)) { 1813 pr_err("target_fabric_configfs_init() failed\n"); 1814 ret = PTR_ERR(npiv_fabric); 1815 goto out_fabric; 1816 } 1817 /* 1818 * Setup fabric->tf_ops from our local tcm_qla2xxx_npiv_ops 1819 */ 1820 npiv_fabric->tf_ops = tcm_qla2xxx_npiv_ops; 1821 /* 1822 * Setup default attribute lists for various npiv_fabric->tf_cit_tmpl 1823 */ 1824 TF_CIT_TMPL(npiv_fabric)->tfc_wwn_cit.ct_attrs = tcm_qla2xxx_wwn_attrs; 1825 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_base_cit.ct_attrs = NULL; 1826 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_attrib_cit.ct_attrs = NULL; 1827 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_param_cit.ct_attrs = NULL; 1828 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_np_base_cit.ct_attrs = NULL; 1829 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_base_cit.ct_attrs = NULL; 1830 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_attrib_cit.ct_attrs = NULL; 1831 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_auth_cit.ct_attrs = NULL; 1832 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_param_cit.ct_attrs = NULL; 1833 /* 1834 * Register the npiv_fabric for use within TCM 1835 */ 1836 ret = target_fabric_configfs_register(npiv_fabric); 1837 if (ret < 0) { 1838 pr_err("target_fabric_configfs_register() failed for TCM_QLA2XXX\n"); 1839 goto out_fabric; 1840 } 1841 /* 1842 * Setup our local pointer to *npiv_fabric 1843 */ 1844 tcm_qla2xxx_npiv_fabric_configfs = npiv_fabric; 1845 pr_debug("TCM_QLA2XXX[0] - Set fabric -> tcm_qla2xxx_npiv_fabric_configfs\n"); 1846 1847 tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free", 1848 WQ_MEM_RECLAIM, 0); 1849 if (!tcm_qla2xxx_free_wq) { 1850 ret = -ENOMEM; 1851 goto out_fabric_npiv; 1852 } 1853 1854 tcm_qla2xxx_cmd_wq = alloc_workqueue("tcm_qla2xxx_cmd", 0, 0); 1855 if (!tcm_qla2xxx_cmd_wq) { 1856 ret = -ENOMEM; 1857 goto out_free_wq; 1858 } 1859 1860 return 0; 1861 1862 out_free_wq: 1863 destroy_workqueue(tcm_qla2xxx_free_wq); 1864 out_fabric_npiv: 1865 target_fabric_configfs_deregister(tcm_qla2xxx_npiv_fabric_configfs); 1866 out_fabric: 1867 target_fabric_configfs_deregister(tcm_qla2xxx_fabric_configfs); 1868 return ret; 1869 } 1870 1871 static void tcm_qla2xxx_deregister_configfs(void) 1872 { 1873 destroy_workqueue(tcm_qla2xxx_cmd_wq); 1874 destroy_workqueue(tcm_qla2xxx_free_wq); 1875 1876 target_fabric_configfs_deregister(tcm_qla2xxx_fabric_configfs); 1877 tcm_qla2xxx_fabric_configfs = NULL; 1878 pr_debug("TCM_QLA2XXX[0] - Cleared tcm_qla2xxx_fabric_configfs\n"); 1879 1880 target_fabric_configfs_deregister(tcm_qla2xxx_npiv_fabric_configfs); 1881 tcm_qla2xxx_npiv_fabric_configfs = NULL; 1882 pr_debug("TCM_QLA2XXX[0] - Cleared tcm_qla2xxx_npiv_fabric_configfs\n"); 1883 } 1884 1885 static int __init tcm_qla2xxx_init(void) 1886 { 1887 int ret; 1888 1889 ret = tcm_qla2xxx_register_configfs(); 1890 if (ret < 0) 1891 return ret; 1892 1893 return 0; 1894 } 1895 1896 static void __exit tcm_qla2xxx_exit(void) 1897 { 1898 tcm_qla2xxx_deregister_configfs(); 1899 } 1900 1901 MODULE_DESCRIPTION("TCM QLA2XXX series NPIV enabled fabric driver"); 1902 MODULE_LICENSE("GPL"); 1903 module_init(tcm_qla2xxx_init); 1904 module_exit(tcm_qla2xxx_exit); 1905