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_naa_name; 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 allocate 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 transport_generic_request_failure(&cmd->se_cmd, 624 TCM_CHECK_CONDITION_ABORT_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 /* Local pointer to allocated TCM configfs fabric module */ 739 struct target_fabric_configfs *tcm_qla2xxx_fabric_configfs; 740 struct target_fabric_configfs *tcm_qla2xxx_npiv_fabric_configfs; 741 742 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *, 743 struct tcm_qla2xxx_nacl *, struct qla_tgt_sess *); 744 /* 745 * Expected to be called with struct qla_hw_data->hardware_lock held 746 */ 747 static void tcm_qla2xxx_clear_nacl_from_fcport_map(struct qla_tgt_sess *sess) 748 { 749 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl; 750 struct se_portal_group *se_tpg = se_nacl->se_tpg; 751 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn; 752 struct tcm_qla2xxx_lport *lport = container_of(se_wwn, 753 struct tcm_qla2xxx_lport, lport_wwn); 754 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl, 755 struct tcm_qla2xxx_nacl, se_node_acl); 756 void *node; 757 758 pr_debug("fc_rport domain: port_id 0x%06x\n", nacl->nport_id); 759 760 node = btree_remove32(&lport->lport_fcport_map, nacl->nport_id); 761 WARN_ON(node && (node != se_nacl)); 762 763 pr_debug("Removed from fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%06x\n", 764 se_nacl, nacl->nport_wwnn, nacl->nport_id); 765 /* 766 * Now clear the se_nacl and session pointers from our HW lport lookup 767 * table mapping for this initiator's fabric S_ID and LOOP_ID entries. 768 * 769 * This is done ahead of callbacks into tcm_qla2xxx_free_session() -> 770 * target_wait_for_sess_cmds() before the session waits for outstanding 771 * I/O to complete, to avoid a race between session shutdown execution 772 * and incoming ATIOs or TMRs picking up a stale se_node_act reference. 773 */ 774 tcm_qla2xxx_clear_sess_lookup(lport, nacl, sess); 775 } 776 777 static void tcm_qla2xxx_release_session(struct kref *kref) 778 { 779 struct se_session *se_sess = container_of(kref, 780 struct se_session, sess_kref); 781 782 qlt_unreg_sess(se_sess->fabric_sess_ptr); 783 } 784 785 static void tcm_qla2xxx_put_session(struct se_session *se_sess) 786 { 787 struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr; 788 struct qla_hw_data *ha = sess->vha->hw; 789 unsigned long flags; 790 791 spin_lock_irqsave(&ha->hardware_lock, flags); 792 kref_put(&se_sess->sess_kref, tcm_qla2xxx_release_session); 793 spin_unlock_irqrestore(&ha->hardware_lock, flags); 794 } 795 796 static void tcm_qla2xxx_put_sess(struct qla_tgt_sess *sess) 797 { 798 tcm_qla2xxx_put_session(sess->se_sess); 799 } 800 801 static void tcm_qla2xxx_shutdown_sess(struct qla_tgt_sess *sess) 802 { 803 tcm_qla2xxx_shutdown_session(sess->se_sess); 804 } 805 806 static struct se_node_acl *tcm_qla2xxx_make_nodeacl( 807 struct se_portal_group *se_tpg, 808 struct config_group *group, 809 const char *name) 810 { 811 struct se_node_acl *se_nacl, *se_nacl_new; 812 struct tcm_qla2xxx_nacl *nacl; 813 u64 wwnn; 814 u32 qla2xxx_nexus_depth; 815 816 if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0) 817 return ERR_PTR(-EINVAL); 818 819 se_nacl_new = tcm_qla2xxx_alloc_fabric_acl(se_tpg); 820 if (!se_nacl_new) 821 return ERR_PTR(-ENOMEM); 822 /* #warning FIXME: Hardcoded qla2xxx_nexus depth in tcm_qla2xxx_make_nodeacl */ 823 qla2xxx_nexus_depth = 1; 824 825 /* 826 * se_nacl_new may be released by core_tpg_add_initiator_node_acl() 827 * when converting a NodeACL from demo mode -> explict 828 */ 829 se_nacl = core_tpg_add_initiator_node_acl(se_tpg, se_nacl_new, 830 name, qla2xxx_nexus_depth); 831 if (IS_ERR(se_nacl)) { 832 tcm_qla2xxx_release_fabric_acl(se_tpg, se_nacl_new); 833 return se_nacl; 834 } 835 /* 836 * Locate our struct tcm_qla2xxx_nacl and set the FC Nport WWPN 837 */ 838 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 839 nacl->nport_wwnn = wwnn; 840 tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn); 841 842 return se_nacl; 843 } 844 845 static void tcm_qla2xxx_drop_nodeacl(struct se_node_acl *se_acl) 846 { 847 struct se_portal_group *se_tpg = se_acl->se_tpg; 848 struct tcm_qla2xxx_nacl *nacl = container_of(se_acl, 849 struct tcm_qla2xxx_nacl, se_node_acl); 850 851 core_tpg_del_initiator_node_acl(se_tpg, se_acl, 1); 852 kfree(nacl); 853 } 854 855 /* Start items for tcm_qla2xxx_tpg_attrib_cit */ 856 857 #define DEF_QLA_TPG_ATTRIB(name) \ 858 \ 859 static ssize_t tcm_qla2xxx_tpg_attrib_show_##name( \ 860 struct se_portal_group *se_tpg, \ 861 char *page) \ 862 { \ 863 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \ 864 struct tcm_qla2xxx_tpg, se_tpg); \ 865 \ 866 return sprintf(page, "%u\n", QLA_TPG_ATTRIB(tpg)->name); \ 867 } \ 868 \ 869 static ssize_t tcm_qla2xxx_tpg_attrib_store_##name( \ 870 struct se_portal_group *se_tpg, \ 871 const char *page, \ 872 size_t count) \ 873 { \ 874 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \ 875 struct tcm_qla2xxx_tpg, se_tpg); \ 876 unsigned long val; \ 877 int ret; \ 878 \ 879 ret = kstrtoul(page, 0, &val); \ 880 if (ret < 0) { \ 881 pr_err("kstrtoul() failed with" \ 882 " ret: %d\n", ret); \ 883 return -EINVAL; \ 884 } \ 885 ret = tcm_qla2xxx_set_attrib_##name(tpg, val); \ 886 \ 887 return (!ret) ? count : -EINVAL; \ 888 } 889 890 #define DEF_QLA_TPG_ATTR_BOOL(_name) \ 891 \ 892 static int tcm_qla2xxx_set_attrib_##_name( \ 893 struct tcm_qla2xxx_tpg *tpg, \ 894 unsigned long val) \ 895 { \ 896 struct tcm_qla2xxx_tpg_attrib *a = &tpg->tpg_attrib; \ 897 \ 898 if ((val != 0) && (val != 1)) { \ 899 pr_err("Illegal boolean value %lu\n", val); \ 900 return -EINVAL; \ 901 } \ 902 \ 903 a->_name = val; \ 904 return 0; \ 905 } 906 907 #define QLA_TPG_ATTR(_name, _mode) \ 908 TF_TPG_ATTRIB_ATTR(tcm_qla2xxx, _name, _mode); 909 910 /* 911 * Define tcm_qla2xxx_tpg_attrib_s_generate_node_acls 912 */ 913 DEF_QLA_TPG_ATTR_BOOL(generate_node_acls); 914 DEF_QLA_TPG_ATTRIB(generate_node_acls); 915 QLA_TPG_ATTR(generate_node_acls, S_IRUGO | S_IWUSR); 916 917 /* 918 Define tcm_qla2xxx_attrib_s_cache_dynamic_acls 919 */ 920 DEF_QLA_TPG_ATTR_BOOL(cache_dynamic_acls); 921 DEF_QLA_TPG_ATTRIB(cache_dynamic_acls); 922 QLA_TPG_ATTR(cache_dynamic_acls, S_IRUGO | S_IWUSR); 923 924 /* 925 * Define tcm_qla2xxx_tpg_attrib_s_demo_mode_write_protect 926 */ 927 DEF_QLA_TPG_ATTR_BOOL(demo_mode_write_protect); 928 DEF_QLA_TPG_ATTRIB(demo_mode_write_protect); 929 QLA_TPG_ATTR(demo_mode_write_protect, S_IRUGO | S_IWUSR); 930 931 /* 932 * Define tcm_qla2xxx_tpg_attrib_s_prod_mode_write_protect 933 */ 934 DEF_QLA_TPG_ATTR_BOOL(prod_mode_write_protect); 935 DEF_QLA_TPG_ATTRIB(prod_mode_write_protect); 936 QLA_TPG_ATTR(prod_mode_write_protect, S_IRUGO | S_IWUSR); 937 938 static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = { 939 &tcm_qla2xxx_tpg_attrib_generate_node_acls.attr, 940 &tcm_qla2xxx_tpg_attrib_cache_dynamic_acls.attr, 941 &tcm_qla2xxx_tpg_attrib_demo_mode_write_protect.attr, 942 &tcm_qla2xxx_tpg_attrib_prod_mode_write_protect.attr, 943 NULL, 944 }; 945 946 /* End items for tcm_qla2xxx_tpg_attrib_cit */ 947 948 static ssize_t tcm_qla2xxx_tpg_show_enable( 949 struct se_portal_group *se_tpg, 950 char *page) 951 { 952 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 953 struct tcm_qla2xxx_tpg, se_tpg); 954 955 return snprintf(page, PAGE_SIZE, "%d\n", 956 atomic_read(&tpg->lport_tpg_enabled)); 957 } 958 959 static ssize_t tcm_qla2xxx_tpg_store_enable( 960 struct se_portal_group *se_tpg, 961 const char *page, 962 size_t count) 963 { 964 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn; 965 struct tcm_qla2xxx_lport *lport = container_of(se_wwn, 966 struct tcm_qla2xxx_lport, lport_wwn); 967 struct scsi_qla_host *vha = lport->qla_vha; 968 struct qla_hw_data *ha = vha->hw; 969 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 970 struct tcm_qla2xxx_tpg, se_tpg); 971 unsigned long op; 972 int rc; 973 974 rc = kstrtoul(page, 0, &op); 975 if (rc < 0) { 976 pr_err("kstrtoul() returned %d\n", rc); 977 return -EINVAL; 978 } 979 if ((op != 1) && (op != 0)) { 980 pr_err("Illegal value for tpg_enable: %lu\n", op); 981 return -EINVAL; 982 } 983 984 if (op) { 985 atomic_set(&tpg->lport_tpg_enabled, 1); 986 qlt_enable_vha(vha); 987 } else { 988 if (!ha->tgt.qla_tgt) { 989 pr_err("truct qla_hw_data *ha->tgt.qla_tgt is NULL\n"); 990 return -ENODEV; 991 } 992 atomic_set(&tpg->lport_tpg_enabled, 0); 993 qlt_stop_phase1(ha->tgt.qla_tgt); 994 } 995 996 return count; 997 } 998 999 TF_TPG_BASE_ATTR(tcm_qla2xxx, enable, S_IRUGO | S_IWUSR); 1000 1001 static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = { 1002 &tcm_qla2xxx_tpg_enable.attr, 1003 NULL, 1004 }; 1005 1006 static struct se_portal_group *tcm_qla2xxx_make_tpg( 1007 struct se_wwn *wwn, 1008 struct config_group *group, 1009 const char *name) 1010 { 1011 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1012 struct tcm_qla2xxx_lport, lport_wwn); 1013 struct tcm_qla2xxx_tpg *tpg; 1014 unsigned long tpgt; 1015 int ret; 1016 1017 if (strstr(name, "tpgt_") != name) 1018 return ERR_PTR(-EINVAL); 1019 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX) 1020 return ERR_PTR(-EINVAL); 1021 1022 if (!lport->qla_npiv_vp && (tpgt != 1)) { 1023 pr_err("In non NPIV mode, a single TPG=1 is used for HW port mappings\n"); 1024 return ERR_PTR(-ENOSYS); 1025 } 1026 1027 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL); 1028 if (!tpg) { 1029 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n"); 1030 return ERR_PTR(-ENOMEM); 1031 } 1032 tpg->lport = lport; 1033 tpg->lport_tpgt = tpgt; 1034 /* 1035 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic 1036 * NodeACLs 1037 */ 1038 QLA_TPG_ATTRIB(tpg)->generate_node_acls = 1; 1039 QLA_TPG_ATTRIB(tpg)->demo_mode_write_protect = 1; 1040 QLA_TPG_ATTRIB(tpg)->cache_dynamic_acls = 1; 1041 1042 ret = core_tpg_register(&tcm_qla2xxx_fabric_configfs->tf_ops, wwn, 1043 &tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL); 1044 if (ret < 0) { 1045 kfree(tpg); 1046 return NULL; 1047 } 1048 /* 1049 * Setup local TPG=1 pointer for non NPIV mode. 1050 */ 1051 if (lport->qla_npiv_vp == NULL) 1052 lport->tpg_1 = tpg; 1053 1054 return &tpg->se_tpg; 1055 } 1056 1057 static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg) 1058 { 1059 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1060 struct tcm_qla2xxx_tpg, se_tpg); 1061 struct tcm_qla2xxx_lport *lport = tpg->lport; 1062 struct scsi_qla_host *vha = lport->qla_vha; 1063 struct qla_hw_data *ha = vha->hw; 1064 /* 1065 * Call into qla2x_target.c LLD logic to shutdown the active 1066 * FC Nexuses and disable target mode operation for this qla_hw_data 1067 */ 1068 if (ha->tgt.qla_tgt && !ha->tgt.qla_tgt->tgt_stop) 1069 qlt_stop_phase1(ha->tgt.qla_tgt); 1070 1071 core_tpg_deregister(se_tpg); 1072 /* 1073 * Clear local TPG=1 pointer for non NPIV mode. 1074 */ 1075 if (lport->qla_npiv_vp == NULL) 1076 lport->tpg_1 = NULL; 1077 1078 kfree(tpg); 1079 } 1080 1081 static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg( 1082 struct se_wwn *wwn, 1083 struct config_group *group, 1084 const char *name) 1085 { 1086 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1087 struct tcm_qla2xxx_lport, lport_wwn); 1088 struct tcm_qla2xxx_tpg *tpg; 1089 unsigned long tpgt; 1090 int ret; 1091 1092 if (strstr(name, "tpgt_") != name) 1093 return ERR_PTR(-EINVAL); 1094 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX) 1095 return ERR_PTR(-EINVAL); 1096 1097 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL); 1098 if (!tpg) { 1099 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n"); 1100 return ERR_PTR(-ENOMEM); 1101 } 1102 tpg->lport = lport; 1103 tpg->lport_tpgt = tpgt; 1104 1105 ret = core_tpg_register(&tcm_qla2xxx_npiv_fabric_configfs->tf_ops, wwn, 1106 &tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL); 1107 if (ret < 0) { 1108 kfree(tpg); 1109 return NULL; 1110 } 1111 return &tpg->se_tpg; 1112 } 1113 1114 /* 1115 * Expected to be called with struct qla_hw_data->hardware_lock held 1116 */ 1117 static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_s_id( 1118 scsi_qla_host_t *vha, 1119 const uint8_t *s_id) 1120 { 1121 struct qla_hw_data *ha = vha->hw; 1122 struct tcm_qla2xxx_lport *lport; 1123 struct se_node_acl *se_nacl; 1124 struct tcm_qla2xxx_nacl *nacl; 1125 u32 key; 1126 1127 lport = ha->tgt.target_lport_ptr; 1128 if (!lport) { 1129 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1130 dump_stack(); 1131 return NULL; 1132 } 1133 1134 key = (((unsigned long)s_id[0] << 16) | 1135 ((unsigned long)s_id[1] << 8) | 1136 (unsigned long)s_id[2]); 1137 pr_debug("find_sess_by_s_id: 0x%06x\n", key); 1138 1139 se_nacl = btree_lookup32(&lport->lport_fcport_map, key); 1140 if (!se_nacl) { 1141 pr_debug("Unable to locate s_id: 0x%06x\n", key); 1142 return NULL; 1143 } 1144 pr_debug("find_sess_by_s_id: located se_nacl: %p, initiatorname: %s\n", 1145 se_nacl, se_nacl->initiatorname); 1146 1147 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1148 if (!nacl->qla_tgt_sess) { 1149 pr_err("Unable to locate struct qla_tgt_sess\n"); 1150 return NULL; 1151 } 1152 1153 return nacl->qla_tgt_sess; 1154 } 1155 1156 /* 1157 * Expected to be called with struct qla_hw_data->hardware_lock held 1158 */ 1159 static void tcm_qla2xxx_set_sess_by_s_id( 1160 struct tcm_qla2xxx_lport *lport, 1161 struct se_node_acl *new_se_nacl, 1162 struct tcm_qla2xxx_nacl *nacl, 1163 struct se_session *se_sess, 1164 struct qla_tgt_sess *qla_tgt_sess, 1165 uint8_t *s_id) 1166 { 1167 u32 key; 1168 void *slot; 1169 int rc; 1170 1171 key = (((unsigned long)s_id[0] << 16) | 1172 ((unsigned long)s_id[1] << 8) | 1173 (unsigned long)s_id[2]); 1174 pr_debug("set_sess_by_s_id: %06x\n", key); 1175 1176 slot = btree_lookup32(&lport->lport_fcport_map, key); 1177 if (!slot) { 1178 if (new_se_nacl) { 1179 pr_debug("Setting up new fc_port entry to new_se_nacl\n"); 1180 nacl->nport_id = key; 1181 rc = btree_insert32(&lport->lport_fcport_map, key, 1182 new_se_nacl, GFP_ATOMIC); 1183 if (rc) 1184 printk(KERN_ERR "Unable to insert s_id into fcport_map: %06x\n", 1185 (int)key); 1186 } else { 1187 pr_debug("Wiping nonexisting fc_port entry\n"); 1188 } 1189 1190 qla_tgt_sess->se_sess = se_sess; 1191 nacl->qla_tgt_sess = qla_tgt_sess; 1192 return; 1193 } 1194 1195 if (nacl->qla_tgt_sess) { 1196 if (new_se_nacl == NULL) { 1197 pr_debug("Clearing existing nacl->qla_tgt_sess and fc_port entry\n"); 1198 btree_remove32(&lport->lport_fcport_map, key); 1199 nacl->qla_tgt_sess = NULL; 1200 return; 1201 } 1202 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_port entry\n"); 1203 btree_update32(&lport->lport_fcport_map, key, new_se_nacl); 1204 qla_tgt_sess->se_sess = se_sess; 1205 nacl->qla_tgt_sess = qla_tgt_sess; 1206 return; 1207 } 1208 1209 if (new_se_nacl == NULL) { 1210 pr_debug("Clearing existing fc_port entry\n"); 1211 btree_remove32(&lport->lport_fcport_map, key); 1212 return; 1213 } 1214 1215 pr_debug("Replacing existing fc_port entry w/o active nacl->qla_tgt_sess\n"); 1216 btree_update32(&lport->lport_fcport_map, key, new_se_nacl); 1217 qla_tgt_sess->se_sess = se_sess; 1218 nacl->qla_tgt_sess = qla_tgt_sess; 1219 1220 pr_debug("Setup nacl->qla_tgt_sess %p by s_id for se_nacl: %p, initiatorname: %s\n", 1221 nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname); 1222 } 1223 1224 /* 1225 * Expected to be called with struct qla_hw_data->hardware_lock held 1226 */ 1227 static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_loop_id( 1228 scsi_qla_host_t *vha, 1229 const uint16_t loop_id) 1230 { 1231 struct qla_hw_data *ha = vha->hw; 1232 struct tcm_qla2xxx_lport *lport; 1233 struct se_node_acl *se_nacl; 1234 struct tcm_qla2xxx_nacl *nacl; 1235 struct tcm_qla2xxx_fc_loopid *fc_loopid; 1236 1237 lport = ha->tgt.target_lport_ptr; 1238 if (!lport) { 1239 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1240 dump_stack(); 1241 return NULL; 1242 } 1243 1244 pr_debug("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id); 1245 1246 fc_loopid = lport->lport_loopid_map + loop_id; 1247 se_nacl = fc_loopid->se_nacl; 1248 if (!se_nacl) { 1249 pr_debug("Unable to locate se_nacl by loop_id: 0x%04x\n", 1250 loop_id); 1251 return NULL; 1252 } 1253 1254 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1255 1256 if (!nacl->qla_tgt_sess) { 1257 pr_err("Unable to locate struct qla_tgt_sess\n"); 1258 return NULL; 1259 } 1260 1261 return nacl->qla_tgt_sess; 1262 } 1263 1264 /* 1265 * Expected to be called with struct qla_hw_data->hardware_lock held 1266 */ 1267 static void tcm_qla2xxx_set_sess_by_loop_id( 1268 struct tcm_qla2xxx_lport *lport, 1269 struct se_node_acl *new_se_nacl, 1270 struct tcm_qla2xxx_nacl *nacl, 1271 struct se_session *se_sess, 1272 struct qla_tgt_sess *qla_tgt_sess, 1273 uint16_t loop_id) 1274 { 1275 struct se_node_acl *saved_nacl; 1276 struct tcm_qla2xxx_fc_loopid *fc_loopid; 1277 1278 pr_debug("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id); 1279 1280 fc_loopid = &((struct tcm_qla2xxx_fc_loopid *) 1281 lport->lport_loopid_map)[loop_id]; 1282 1283 saved_nacl = fc_loopid->se_nacl; 1284 if (!saved_nacl) { 1285 pr_debug("Setting up new fc_loopid->se_nacl to new_se_nacl\n"); 1286 fc_loopid->se_nacl = new_se_nacl; 1287 if (qla_tgt_sess->se_sess != se_sess) 1288 qla_tgt_sess->se_sess = se_sess; 1289 if (nacl->qla_tgt_sess != qla_tgt_sess) 1290 nacl->qla_tgt_sess = qla_tgt_sess; 1291 return; 1292 } 1293 1294 if (nacl->qla_tgt_sess) { 1295 if (new_se_nacl == NULL) { 1296 pr_debug("Clearing nacl->qla_tgt_sess and fc_loopid->se_nacl\n"); 1297 fc_loopid->se_nacl = NULL; 1298 nacl->qla_tgt_sess = NULL; 1299 return; 1300 } 1301 1302 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_loopid->se_nacl\n"); 1303 fc_loopid->se_nacl = new_se_nacl; 1304 if (qla_tgt_sess->se_sess != se_sess) 1305 qla_tgt_sess->se_sess = se_sess; 1306 if (nacl->qla_tgt_sess != qla_tgt_sess) 1307 nacl->qla_tgt_sess = qla_tgt_sess; 1308 return; 1309 } 1310 1311 if (new_se_nacl == NULL) { 1312 pr_debug("Clearing fc_loopid->se_nacl\n"); 1313 fc_loopid->se_nacl = NULL; 1314 return; 1315 } 1316 1317 pr_debug("Replacing existing fc_loopid->se_nacl w/o active nacl->qla_tgt_sess\n"); 1318 fc_loopid->se_nacl = new_se_nacl; 1319 if (qla_tgt_sess->se_sess != se_sess) 1320 qla_tgt_sess->se_sess = se_sess; 1321 if (nacl->qla_tgt_sess != qla_tgt_sess) 1322 nacl->qla_tgt_sess = qla_tgt_sess; 1323 1324 pr_debug("Setup nacl->qla_tgt_sess %p by loop_id for se_nacl: %p, initiatorname: %s\n", 1325 nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname); 1326 } 1327 1328 /* 1329 * Should always be called with qla_hw_data->hardware_lock held. 1330 */ 1331 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *lport, 1332 struct tcm_qla2xxx_nacl *nacl, struct qla_tgt_sess *sess) 1333 { 1334 struct se_session *se_sess = sess->se_sess; 1335 unsigned char be_sid[3]; 1336 1337 be_sid[0] = sess->s_id.b.domain; 1338 be_sid[1] = sess->s_id.b.area; 1339 be_sid[2] = sess->s_id.b.al_pa; 1340 1341 tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess, 1342 sess, be_sid); 1343 tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess, 1344 sess, sess->loop_id); 1345 } 1346 1347 static void tcm_qla2xxx_free_session(struct qla_tgt_sess *sess) 1348 { 1349 struct qla_tgt *tgt = sess->tgt; 1350 struct qla_hw_data *ha = tgt->ha; 1351 struct se_session *se_sess; 1352 struct se_node_acl *se_nacl; 1353 struct tcm_qla2xxx_lport *lport; 1354 struct tcm_qla2xxx_nacl *nacl; 1355 1356 BUG_ON(in_interrupt()); 1357 1358 se_sess = sess->se_sess; 1359 if (!se_sess) { 1360 pr_err("struct qla_tgt_sess->se_sess is NULL\n"); 1361 dump_stack(); 1362 return; 1363 } 1364 se_nacl = se_sess->se_node_acl; 1365 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1366 1367 lport = ha->tgt.target_lport_ptr; 1368 if (!lport) { 1369 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1370 dump_stack(); 1371 return; 1372 } 1373 target_wait_for_sess_cmds(se_sess, 0); 1374 1375 transport_deregister_session_configfs(sess->se_sess); 1376 transport_deregister_session(sess->se_sess); 1377 } 1378 1379 /* 1380 * Called via qlt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl() 1381 * to locate struct se_node_acl 1382 */ 1383 static int tcm_qla2xxx_check_initiator_node_acl( 1384 scsi_qla_host_t *vha, 1385 unsigned char *fc_wwpn, 1386 void *qla_tgt_sess, 1387 uint8_t *s_id, 1388 uint16_t loop_id) 1389 { 1390 struct qla_hw_data *ha = vha->hw; 1391 struct tcm_qla2xxx_lport *lport; 1392 struct tcm_qla2xxx_tpg *tpg; 1393 struct tcm_qla2xxx_nacl *nacl; 1394 struct se_portal_group *se_tpg; 1395 struct se_node_acl *se_nacl; 1396 struct se_session *se_sess; 1397 struct qla_tgt_sess *sess = qla_tgt_sess; 1398 unsigned char port_name[36]; 1399 unsigned long flags; 1400 1401 lport = ha->tgt.target_lport_ptr; 1402 if (!lport) { 1403 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1404 dump_stack(); 1405 return -EINVAL; 1406 } 1407 /* 1408 * Locate the TPG=1 reference.. 1409 */ 1410 tpg = lport->tpg_1; 1411 if (!tpg) { 1412 pr_err("Unable to lcoate struct tcm_qla2xxx_lport->tpg_1\n"); 1413 return -EINVAL; 1414 } 1415 se_tpg = &tpg->se_tpg; 1416 1417 se_sess = transport_init_session(); 1418 if (IS_ERR(se_sess)) { 1419 pr_err("Unable to initialize struct se_session\n"); 1420 return PTR_ERR(se_sess); 1421 } 1422 /* 1423 * Format the FCP Initiator port_name into colon seperated values to 1424 * match the format by tcm_qla2xxx explict ConfigFS NodeACLs. 1425 */ 1426 memset(&port_name, 0, 36); 1427 snprintf(port_name, 36, "%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x", 1428 fc_wwpn[0], fc_wwpn[1], fc_wwpn[2], fc_wwpn[3], fc_wwpn[4], 1429 fc_wwpn[5], fc_wwpn[6], fc_wwpn[7]); 1430 /* 1431 * Locate our struct se_node_acl either from an explict NodeACL created 1432 * via ConfigFS, or via running in TPG demo mode. 1433 */ 1434 se_sess->se_node_acl = core_tpg_check_initiator_node_acl(se_tpg, 1435 port_name); 1436 if (!se_sess->se_node_acl) { 1437 transport_free_session(se_sess); 1438 return -EINVAL; 1439 } 1440 se_nacl = se_sess->se_node_acl; 1441 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1442 /* 1443 * And now setup the new se_nacl and session pointers into our HW lport 1444 * mappings for fabric S_ID and LOOP_ID. 1445 */ 1446 spin_lock_irqsave(&ha->hardware_lock, flags); 1447 tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl, se_sess, 1448 qla_tgt_sess, s_id); 1449 tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl, se_sess, 1450 qla_tgt_sess, loop_id); 1451 spin_unlock_irqrestore(&ha->hardware_lock, flags); 1452 /* 1453 * Finally register the new FC Nexus with TCM 1454 */ 1455 __transport_register_session(se_nacl->se_tpg, se_nacl, se_sess, sess); 1456 1457 return 0; 1458 } 1459 1460 static void tcm_qla2xxx_update_sess(struct qla_tgt_sess *sess, port_id_t s_id, 1461 uint16_t loop_id, bool conf_compl_supported) 1462 { 1463 struct qla_tgt *tgt = sess->tgt; 1464 struct qla_hw_data *ha = tgt->ha; 1465 struct tcm_qla2xxx_lport *lport = ha->tgt.target_lport_ptr; 1466 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl; 1467 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl, 1468 struct tcm_qla2xxx_nacl, se_node_acl); 1469 u32 key; 1470 1471 1472 if (sess->loop_id != loop_id || sess->s_id.b24 != s_id.b24) 1473 pr_info("Updating session %p from port %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x loop_id %d -> %d s_id %x:%x:%x -> %x:%x:%x\n", 1474 sess, 1475 sess->port_name[0], sess->port_name[1], 1476 sess->port_name[2], sess->port_name[3], 1477 sess->port_name[4], sess->port_name[5], 1478 sess->port_name[6], sess->port_name[7], 1479 sess->loop_id, loop_id, 1480 sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa, 1481 s_id.b.domain, s_id.b.area, s_id.b.al_pa); 1482 1483 if (sess->loop_id != loop_id) { 1484 /* 1485 * Because we can shuffle loop IDs around and we 1486 * update different sessions non-atomically, we might 1487 * have overwritten this session's old loop ID 1488 * already, and we might end up overwriting some other 1489 * session that will be updated later. So we have to 1490 * be extra careful and we can't warn about those things... 1491 */ 1492 if (lport->lport_loopid_map[sess->loop_id].se_nacl == se_nacl) 1493 lport->lport_loopid_map[sess->loop_id].se_nacl = NULL; 1494 1495 lport->lport_loopid_map[loop_id].se_nacl = se_nacl; 1496 1497 sess->loop_id = loop_id; 1498 } 1499 1500 if (sess->s_id.b24 != s_id.b24) { 1501 key = (((u32) sess->s_id.b.domain << 16) | 1502 ((u32) sess->s_id.b.area << 8) | 1503 ((u32) sess->s_id.b.al_pa)); 1504 1505 if (btree_lookup32(&lport->lport_fcport_map, key)) 1506 WARN(btree_remove32(&lport->lport_fcport_map, key) != se_nacl, 1507 "Found wrong se_nacl when updating s_id %x:%x:%x\n", 1508 sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa); 1509 else 1510 WARN(1, "No lport_fcport_map entry for s_id %x:%x:%x\n", 1511 sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa); 1512 1513 key = (((u32) s_id.b.domain << 16) | 1514 ((u32) s_id.b.area << 8) | 1515 ((u32) s_id.b.al_pa)); 1516 1517 if (btree_lookup32(&lport->lport_fcport_map, key)) { 1518 WARN(1, "Already have lport_fcport_map entry for s_id %x:%x:%x\n", 1519 s_id.b.domain, s_id.b.area, s_id.b.al_pa); 1520 btree_update32(&lport->lport_fcport_map, key, se_nacl); 1521 } else { 1522 btree_insert32(&lport->lport_fcport_map, key, se_nacl, GFP_ATOMIC); 1523 } 1524 1525 sess->s_id = s_id; 1526 nacl->nport_id = key; 1527 } 1528 1529 sess->conf_compl_supported = conf_compl_supported; 1530 } 1531 1532 /* 1533 * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path. 1534 */ 1535 static struct qla_tgt_func_tmpl tcm_qla2xxx_template = { 1536 .handle_cmd = tcm_qla2xxx_handle_cmd, 1537 .handle_data = tcm_qla2xxx_handle_data, 1538 .handle_tmr = tcm_qla2xxx_handle_tmr, 1539 .free_cmd = tcm_qla2xxx_free_cmd, 1540 .free_mcmd = tcm_qla2xxx_free_mcmd, 1541 .free_session = tcm_qla2xxx_free_session, 1542 .update_sess = tcm_qla2xxx_update_sess, 1543 .check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl, 1544 .find_sess_by_s_id = tcm_qla2xxx_find_sess_by_s_id, 1545 .find_sess_by_loop_id = tcm_qla2xxx_find_sess_by_loop_id, 1546 .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map, 1547 .put_sess = tcm_qla2xxx_put_sess, 1548 .shutdown_sess = tcm_qla2xxx_shutdown_sess, 1549 }; 1550 1551 static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport) 1552 { 1553 int rc; 1554 1555 rc = btree_init32(&lport->lport_fcport_map); 1556 if (rc) { 1557 pr_err("Unable to initialize lport->lport_fcport_map btree\n"); 1558 return rc; 1559 } 1560 1561 lport->lport_loopid_map = vmalloc(sizeof(struct tcm_qla2xxx_fc_loopid) * 1562 65536); 1563 if (!lport->lport_loopid_map) { 1564 pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n", 1565 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536); 1566 btree_destroy32(&lport->lport_fcport_map); 1567 return -ENOMEM; 1568 } 1569 memset(lport->lport_loopid_map, 0, sizeof(struct tcm_qla2xxx_fc_loopid) 1570 * 65536); 1571 pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n", 1572 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536); 1573 return 0; 1574 } 1575 1576 static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha) 1577 { 1578 struct qla_hw_data *ha = vha->hw; 1579 struct tcm_qla2xxx_lport *lport; 1580 /* 1581 * Setup local pointer to vha, NPIV VP pointer (if present) and 1582 * vha->tcm_lport pointer 1583 */ 1584 lport = (struct tcm_qla2xxx_lport *)ha->tgt.target_lport_ptr; 1585 lport->qla_vha = vha; 1586 1587 return 0; 1588 } 1589 1590 static struct se_wwn *tcm_qla2xxx_make_lport( 1591 struct target_fabric_configfs *tf, 1592 struct config_group *group, 1593 const char *name) 1594 { 1595 struct tcm_qla2xxx_lport *lport; 1596 u64 wwpn; 1597 int ret = -ENODEV; 1598 1599 if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0) 1600 return ERR_PTR(-EINVAL); 1601 1602 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL); 1603 if (!lport) { 1604 pr_err("Unable to allocate struct tcm_qla2xxx_lport\n"); 1605 return ERR_PTR(-ENOMEM); 1606 } 1607 lport->lport_wwpn = wwpn; 1608 tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN, 1609 wwpn); 1610 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) wwpn); 1611 1612 ret = tcm_qla2xxx_init_lport(lport); 1613 if (ret != 0) 1614 goto out; 1615 1616 ret = qlt_lport_register(&tcm_qla2xxx_template, wwpn, 1617 tcm_qla2xxx_lport_register_cb, lport); 1618 if (ret != 0) 1619 goto out_lport; 1620 1621 return &lport->lport_wwn; 1622 out_lport: 1623 vfree(lport->lport_loopid_map); 1624 btree_destroy32(&lport->lport_fcport_map); 1625 out: 1626 kfree(lport); 1627 return ERR_PTR(ret); 1628 } 1629 1630 static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn) 1631 { 1632 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1633 struct tcm_qla2xxx_lport, lport_wwn); 1634 struct scsi_qla_host *vha = lport->qla_vha; 1635 struct qla_hw_data *ha = vha->hw; 1636 struct se_node_acl *node; 1637 u32 key = 0; 1638 1639 /* 1640 * Call into qla2x_target.c LLD logic to complete the 1641 * shutdown of struct qla_tgt after the call to 1642 * qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above.. 1643 */ 1644 if (ha->tgt.qla_tgt && !ha->tgt.qla_tgt->tgt_stopped) 1645 qlt_stop_phase2(ha->tgt.qla_tgt); 1646 1647 qlt_lport_deregister(vha); 1648 1649 vfree(lport->lport_loopid_map); 1650 btree_for_each_safe32(&lport->lport_fcport_map, key, node) 1651 btree_remove32(&lport->lport_fcport_map, key); 1652 btree_destroy32(&lport->lport_fcport_map); 1653 kfree(lport); 1654 } 1655 1656 static struct se_wwn *tcm_qla2xxx_npiv_make_lport( 1657 struct target_fabric_configfs *tf, 1658 struct config_group *group, 1659 const char *name) 1660 { 1661 struct tcm_qla2xxx_lport *lport; 1662 u64 npiv_wwpn, npiv_wwnn; 1663 int ret; 1664 1665 if (tcm_qla2xxx_npiv_parse_wwn(name, strlen(name)+1, 1666 &npiv_wwpn, &npiv_wwnn) < 0) 1667 return ERR_PTR(-EINVAL); 1668 1669 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL); 1670 if (!lport) { 1671 pr_err("Unable to allocate struct tcm_qla2xxx_lport for NPIV\n"); 1672 return ERR_PTR(-ENOMEM); 1673 } 1674 lport->lport_npiv_wwpn = npiv_wwpn; 1675 lport->lport_npiv_wwnn = npiv_wwnn; 1676 tcm_qla2xxx_npiv_format_wwn(&lport->lport_npiv_name[0], 1677 TCM_QLA2XXX_NAMELEN, npiv_wwpn, npiv_wwnn); 1678 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) npiv_wwpn); 1679 1680 /* FIXME: tcm_qla2xxx_npiv_make_lport */ 1681 ret = -ENOSYS; 1682 if (ret != 0) 1683 goto out; 1684 1685 return &lport->lport_wwn; 1686 out: 1687 kfree(lport); 1688 return ERR_PTR(ret); 1689 } 1690 1691 static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn) 1692 { 1693 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1694 struct tcm_qla2xxx_lport, lport_wwn); 1695 struct scsi_qla_host *vha = lport->qla_vha; 1696 struct Scsi_Host *sh = vha->host; 1697 /* 1698 * Notify libfc that we want to release the lport->npiv_vport 1699 */ 1700 fc_vport_terminate(lport->npiv_vport); 1701 1702 scsi_host_put(sh); 1703 kfree(lport); 1704 } 1705 1706 1707 static ssize_t tcm_qla2xxx_wwn_show_attr_version( 1708 struct target_fabric_configfs *tf, 1709 char *page) 1710 { 1711 return sprintf(page, 1712 "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s on " 1713 UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname, 1714 utsname()->machine); 1715 } 1716 1717 TF_WWN_ATTR_RO(tcm_qla2xxx, version); 1718 1719 static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = { 1720 &tcm_qla2xxx_wwn_version.attr, 1721 NULL, 1722 }; 1723 1724 static struct target_core_fabric_ops tcm_qla2xxx_ops = { 1725 .get_fabric_name = tcm_qla2xxx_get_fabric_name, 1726 .get_fabric_proto_ident = tcm_qla2xxx_get_fabric_proto_ident, 1727 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn, 1728 .tpg_get_tag = tcm_qla2xxx_get_tag, 1729 .tpg_get_default_depth = tcm_qla2xxx_get_default_depth, 1730 .tpg_get_pr_transport_id = tcm_qla2xxx_get_pr_transport_id, 1731 .tpg_get_pr_transport_id_len = tcm_qla2xxx_get_pr_transport_id_len, 1732 .tpg_parse_pr_out_transport_id = tcm_qla2xxx_parse_pr_out_transport_id, 1733 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode, 1734 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache, 1735 .tpg_check_demo_mode_write_protect = 1736 tcm_qla2xxx_check_demo_write_protect, 1737 .tpg_check_prod_mode_write_protect = 1738 tcm_qla2xxx_check_prod_write_protect, 1739 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_true, 1740 .tpg_alloc_fabric_acl = tcm_qla2xxx_alloc_fabric_acl, 1741 .tpg_release_fabric_acl = tcm_qla2xxx_release_fabric_acl, 1742 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index, 1743 .check_stop_free = tcm_qla2xxx_check_stop_free, 1744 .release_cmd = tcm_qla2xxx_release_cmd, 1745 .put_session = tcm_qla2xxx_put_session, 1746 .shutdown_session = tcm_qla2xxx_shutdown_session, 1747 .close_session = tcm_qla2xxx_close_session, 1748 .sess_get_index = tcm_qla2xxx_sess_get_index, 1749 .sess_get_initiator_sid = NULL, 1750 .write_pending = tcm_qla2xxx_write_pending, 1751 .write_pending_status = tcm_qla2xxx_write_pending_status, 1752 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs, 1753 .get_task_tag = tcm_qla2xxx_get_task_tag, 1754 .get_cmd_state = tcm_qla2xxx_get_cmd_state, 1755 .queue_data_in = tcm_qla2xxx_queue_data_in, 1756 .queue_status = tcm_qla2xxx_queue_status, 1757 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp, 1758 /* 1759 * Setup function pointers for generic logic in 1760 * target_core_fabric_configfs.c 1761 */ 1762 .fabric_make_wwn = tcm_qla2xxx_make_lport, 1763 .fabric_drop_wwn = tcm_qla2xxx_drop_lport, 1764 .fabric_make_tpg = tcm_qla2xxx_make_tpg, 1765 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg, 1766 .fabric_post_link = NULL, 1767 .fabric_pre_unlink = NULL, 1768 .fabric_make_np = NULL, 1769 .fabric_drop_np = NULL, 1770 .fabric_make_nodeacl = tcm_qla2xxx_make_nodeacl, 1771 .fabric_drop_nodeacl = tcm_qla2xxx_drop_nodeacl, 1772 }; 1773 1774 static struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = { 1775 .get_fabric_name = tcm_qla2xxx_npiv_get_fabric_name, 1776 .get_fabric_proto_ident = tcm_qla2xxx_get_fabric_proto_ident, 1777 .tpg_get_wwn = tcm_qla2xxx_npiv_get_fabric_wwn, 1778 .tpg_get_tag = tcm_qla2xxx_get_tag, 1779 .tpg_get_default_depth = tcm_qla2xxx_get_default_depth, 1780 .tpg_get_pr_transport_id = tcm_qla2xxx_get_pr_transport_id, 1781 .tpg_get_pr_transport_id_len = tcm_qla2xxx_get_pr_transport_id_len, 1782 .tpg_parse_pr_out_transport_id = tcm_qla2xxx_parse_pr_out_transport_id, 1783 .tpg_check_demo_mode = tcm_qla2xxx_check_false, 1784 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_true, 1785 .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_true, 1786 .tpg_check_prod_mode_write_protect = tcm_qla2xxx_check_false, 1787 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_true, 1788 .tpg_alloc_fabric_acl = tcm_qla2xxx_alloc_fabric_acl, 1789 .tpg_release_fabric_acl = tcm_qla2xxx_release_fabric_acl, 1790 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index, 1791 .release_cmd = tcm_qla2xxx_release_cmd, 1792 .put_session = tcm_qla2xxx_put_session, 1793 .shutdown_session = tcm_qla2xxx_shutdown_session, 1794 .close_session = tcm_qla2xxx_close_session, 1795 .sess_get_index = tcm_qla2xxx_sess_get_index, 1796 .sess_get_initiator_sid = NULL, 1797 .write_pending = tcm_qla2xxx_write_pending, 1798 .write_pending_status = tcm_qla2xxx_write_pending_status, 1799 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs, 1800 .get_task_tag = tcm_qla2xxx_get_task_tag, 1801 .get_cmd_state = tcm_qla2xxx_get_cmd_state, 1802 .queue_data_in = tcm_qla2xxx_queue_data_in, 1803 .queue_status = tcm_qla2xxx_queue_status, 1804 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp, 1805 /* 1806 * Setup function pointers for generic logic in 1807 * target_core_fabric_configfs.c 1808 */ 1809 .fabric_make_wwn = tcm_qla2xxx_npiv_make_lport, 1810 .fabric_drop_wwn = tcm_qla2xxx_npiv_drop_lport, 1811 .fabric_make_tpg = tcm_qla2xxx_npiv_make_tpg, 1812 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg, 1813 .fabric_post_link = NULL, 1814 .fabric_pre_unlink = NULL, 1815 .fabric_make_np = NULL, 1816 .fabric_drop_np = NULL, 1817 .fabric_make_nodeacl = tcm_qla2xxx_make_nodeacl, 1818 .fabric_drop_nodeacl = tcm_qla2xxx_drop_nodeacl, 1819 }; 1820 1821 static int tcm_qla2xxx_register_configfs(void) 1822 { 1823 struct target_fabric_configfs *fabric, *npiv_fabric; 1824 int ret; 1825 1826 pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on " 1827 UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname, 1828 utsname()->machine); 1829 /* 1830 * Register the top level struct config_item_type with TCM core 1831 */ 1832 fabric = target_fabric_configfs_init(THIS_MODULE, "qla2xxx"); 1833 if (IS_ERR(fabric)) { 1834 pr_err("target_fabric_configfs_init() failed\n"); 1835 return PTR_ERR(fabric); 1836 } 1837 /* 1838 * Setup fabric->tf_ops from our local tcm_qla2xxx_ops 1839 */ 1840 fabric->tf_ops = tcm_qla2xxx_ops; 1841 /* 1842 * Setup default attribute lists for various fabric->tf_cit_tmpl 1843 */ 1844 TF_CIT_TMPL(fabric)->tfc_wwn_cit.ct_attrs = tcm_qla2xxx_wwn_attrs; 1845 TF_CIT_TMPL(fabric)->tfc_tpg_base_cit.ct_attrs = tcm_qla2xxx_tpg_attrs; 1846 TF_CIT_TMPL(fabric)->tfc_tpg_attrib_cit.ct_attrs = 1847 tcm_qla2xxx_tpg_attrib_attrs; 1848 TF_CIT_TMPL(fabric)->tfc_tpg_param_cit.ct_attrs = NULL; 1849 TF_CIT_TMPL(fabric)->tfc_tpg_np_base_cit.ct_attrs = NULL; 1850 TF_CIT_TMPL(fabric)->tfc_tpg_nacl_base_cit.ct_attrs = NULL; 1851 TF_CIT_TMPL(fabric)->tfc_tpg_nacl_attrib_cit.ct_attrs = NULL; 1852 TF_CIT_TMPL(fabric)->tfc_tpg_nacl_auth_cit.ct_attrs = NULL; 1853 TF_CIT_TMPL(fabric)->tfc_tpg_nacl_param_cit.ct_attrs = NULL; 1854 /* 1855 * Register the fabric for use within TCM 1856 */ 1857 ret = target_fabric_configfs_register(fabric); 1858 if (ret < 0) { 1859 pr_err("target_fabric_configfs_register() failed for TCM_QLA2XXX\n"); 1860 return ret; 1861 } 1862 /* 1863 * Setup our local pointer to *fabric 1864 */ 1865 tcm_qla2xxx_fabric_configfs = fabric; 1866 pr_debug("TCM_QLA2XXX[0] - Set fabric -> tcm_qla2xxx_fabric_configfs\n"); 1867 1868 /* 1869 * Register the top level struct config_item_type for NPIV with TCM core 1870 */ 1871 npiv_fabric = target_fabric_configfs_init(THIS_MODULE, "qla2xxx_npiv"); 1872 if (IS_ERR(npiv_fabric)) { 1873 pr_err("target_fabric_configfs_init() failed\n"); 1874 ret = PTR_ERR(npiv_fabric); 1875 goto out_fabric; 1876 } 1877 /* 1878 * Setup fabric->tf_ops from our local tcm_qla2xxx_npiv_ops 1879 */ 1880 npiv_fabric->tf_ops = tcm_qla2xxx_npiv_ops; 1881 /* 1882 * Setup default attribute lists for various npiv_fabric->tf_cit_tmpl 1883 */ 1884 TF_CIT_TMPL(npiv_fabric)->tfc_wwn_cit.ct_attrs = tcm_qla2xxx_wwn_attrs; 1885 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_base_cit.ct_attrs = NULL; 1886 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_attrib_cit.ct_attrs = NULL; 1887 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_param_cit.ct_attrs = NULL; 1888 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_np_base_cit.ct_attrs = NULL; 1889 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_base_cit.ct_attrs = NULL; 1890 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_attrib_cit.ct_attrs = NULL; 1891 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_auth_cit.ct_attrs = NULL; 1892 TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_param_cit.ct_attrs = NULL; 1893 /* 1894 * Register the npiv_fabric for use within TCM 1895 */ 1896 ret = target_fabric_configfs_register(npiv_fabric); 1897 if (ret < 0) { 1898 pr_err("target_fabric_configfs_register() failed for TCM_QLA2XXX\n"); 1899 goto out_fabric; 1900 } 1901 /* 1902 * Setup our local pointer to *npiv_fabric 1903 */ 1904 tcm_qla2xxx_npiv_fabric_configfs = npiv_fabric; 1905 pr_debug("TCM_QLA2XXX[0] - Set fabric -> tcm_qla2xxx_npiv_fabric_configfs\n"); 1906 1907 tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free", 1908 WQ_MEM_RECLAIM, 0); 1909 if (!tcm_qla2xxx_free_wq) { 1910 ret = -ENOMEM; 1911 goto out_fabric_npiv; 1912 } 1913 1914 tcm_qla2xxx_cmd_wq = alloc_workqueue("tcm_qla2xxx_cmd", 0, 0); 1915 if (!tcm_qla2xxx_cmd_wq) { 1916 ret = -ENOMEM; 1917 goto out_free_wq; 1918 } 1919 1920 return 0; 1921 1922 out_free_wq: 1923 destroy_workqueue(tcm_qla2xxx_free_wq); 1924 out_fabric_npiv: 1925 target_fabric_configfs_deregister(tcm_qla2xxx_npiv_fabric_configfs); 1926 out_fabric: 1927 target_fabric_configfs_deregister(tcm_qla2xxx_fabric_configfs); 1928 return ret; 1929 } 1930 1931 static void tcm_qla2xxx_deregister_configfs(void) 1932 { 1933 destroy_workqueue(tcm_qla2xxx_cmd_wq); 1934 destroy_workqueue(tcm_qla2xxx_free_wq); 1935 1936 target_fabric_configfs_deregister(tcm_qla2xxx_fabric_configfs); 1937 tcm_qla2xxx_fabric_configfs = NULL; 1938 pr_debug("TCM_QLA2XXX[0] - Cleared tcm_qla2xxx_fabric_configfs\n"); 1939 1940 target_fabric_configfs_deregister(tcm_qla2xxx_npiv_fabric_configfs); 1941 tcm_qla2xxx_npiv_fabric_configfs = NULL; 1942 pr_debug("TCM_QLA2XXX[0] - Cleared tcm_qla2xxx_npiv_fabric_configfs\n"); 1943 } 1944 1945 static int __init tcm_qla2xxx_init(void) 1946 { 1947 int ret; 1948 1949 ret = tcm_qla2xxx_register_configfs(); 1950 if (ret < 0) 1951 return ret; 1952 1953 return 0; 1954 } 1955 1956 static void __exit tcm_qla2xxx_exit(void) 1957 { 1958 tcm_qla2xxx_deregister_configfs(); 1959 } 1960 1961 MODULE_DESCRIPTION("TCM QLA2XXX series NPIV enabled fabric driver"); 1962 MODULE_LICENSE("GPL"); 1963 module_init(tcm_qla2xxx_init); 1964 module_exit(tcm_qla2xxx_exit); 1965