1 /******************************************************************************* 2 * This file contains tcm implementation using v4 configfs fabric infrastructure 3 * for QLogic target mode HBAs 4 * 5 * (c) Copyright 2010-2013 Datera, Inc. 6 * 7 * Author: Nicholas A. Bellinger <nab@daterainc.com> 8 * 9 * tcm_qla2xxx_parse_wwn() and tcm_qla2xxx_format_wwn() contains code from 10 * the TCM_FC / Open-FCoE.org fabric module. 11 * 12 * Copyright (c) 2010 Cisco Systems, Inc 13 * 14 * This program is free software; you can redistribute it and/or modify 15 * it under the terms of the GNU General Public License as published by 16 * the Free Software Foundation; either version 2 of the License, or 17 * (at your option) any later version. 18 * 19 * This program is distributed in the hope that it will be useful, 20 * but WITHOUT ANY WARRANTY; without even the implied warranty of 21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 22 * GNU General Public License for more details. 23 ****************************************************************************/ 24 25 26 #include <linux/module.h> 27 #include <linux/moduleparam.h> 28 #include <generated/utsrelease.h> 29 #include <linux/utsname.h> 30 #include <linux/init.h> 31 #include <linux/list.h> 32 #include <linux/slab.h> 33 #include <linux/kthread.h> 34 #include <linux/types.h> 35 #include <linux/string.h> 36 #include <linux/configfs.h> 37 #include <linux/ctype.h> 38 #include <asm/unaligned.h> 39 #include <scsi/scsi.h> 40 #include <scsi/scsi_host.h> 41 #include <scsi/scsi_device.h> 42 #include <scsi/scsi_cmnd.h> 43 #include <target/target_core_base.h> 44 #include <target/target_core_fabric.h> 45 #include <target/target_core_fabric_configfs.h> 46 #include <target/target_core_configfs.h> 47 #include <target/configfs_macros.h> 48 49 #include "qla_def.h" 50 #include "qla_target.h" 51 #include "tcm_qla2xxx.h" 52 53 static struct workqueue_struct *tcm_qla2xxx_free_wq; 54 static struct workqueue_struct *tcm_qla2xxx_cmd_wq; 55 56 /* Local pointer to allocated TCM configfs fabric module */ 57 static struct target_fabric_configfs *tcm_qla2xxx_fabric_configfs; 58 static struct target_fabric_configfs *tcm_qla2xxx_npiv_fabric_configfs; 59 60 /* 61 * Parse WWN. 62 * If strict, we require lower-case hex and colon separators to be sure 63 * the name is the same as what would be generated by ft_format_wwn() 64 * so the name and wwn are mapped one-to-one. 65 */ 66 static ssize_t tcm_qla2xxx_parse_wwn(const char *name, u64 *wwn, int strict) 67 { 68 const char *cp; 69 char c; 70 u32 nibble; 71 u32 byte = 0; 72 u32 pos = 0; 73 u32 err; 74 75 *wwn = 0; 76 for (cp = name; cp < &name[TCM_QLA2XXX_NAMELEN - 1]; cp++) { 77 c = *cp; 78 if (c == '\n' && cp[1] == '\0') 79 continue; 80 if (strict && pos++ == 2 && byte++ < 7) { 81 pos = 0; 82 if (c == ':') 83 continue; 84 err = 1; 85 goto fail; 86 } 87 if (c == '\0') { 88 err = 2; 89 if (strict && byte != 8) 90 goto fail; 91 return cp - name; 92 } 93 err = 3; 94 if (isdigit(c)) 95 nibble = c - '0'; 96 else if (isxdigit(c) && (islower(c) || !strict)) 97 nibble = tolower(c) - 'a' + 10; 98 else 99 goto fail; 100 *wwn = (*wwn << 4) | nibble; 101 } 102 err = 4; 103 fail: 104 pr_debug("err %u len %zu pos %u byte %u\n", 105 err, cp - name, pos, byte); 106 return -1; 107 } 108 109 static ssize_t tcm_qla2xxx_format_wwn(char *buf, size_t len, u64 wwn) 110 { 111 u8 b[8]; 112 113 put_unaligned_be64(wwn, b); 114 return snprintf(buf, len, 115 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x", 116 b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7]); 117 } 118 119 static char *tcm_qla2xxx_get_fabric_name(void) 120 { 121 return "qla2xxx"; 122 } 123 124 /* 125 * From drivers/scsi/scsi_transport_fc.c:fc_parse_wwn 126 */ 127 static int tcm_qla2xxx_npiv_extract_wwn(const char *ns, u64 *nm) 128 { 129 unsigned int i, j; 130 u8 wwn[8]; 131 132 memset(wwn, 0, sizeof(wwn)); 133 134 /* Validate and store the new name */ 135 for (i = 0, j = 0; i < 16; i++) { 136 int value; 137 138 value = hex_to_bin(*ns++); 139 if (value >= 0) 140 j = (j << 4) | value; 141 else 142 return -EINVAL; 143 144 if (i % 2) { 145 wwn[i/2] = j & 0xff; 146 j = 0; 147 } 148 } 149 150 *nm = wwn_to_u64(wwn); 151 return 0; 152 } 153 154 /* 155 * This parsing logic follows drivers/scsi/scsi_transport_fc.c: 156 * store_fc_host_vport_create() 157 */ 158 static int tcm_qla2xxx_npiv_parse_wwn( 159 const char *name, 160 size_t count, 161 u64 *wwpn, 162 u64 *wwnn) 163 { 164 unsigned int cnt = count; 165 int rc; 166 167 *wwpn = 0; 168 *wwnn = 0; 169 170 /* count may include a LF at end of string */ 171 if (name[cnt-1] == '\n' || name[cnt-1] == 0) 172 cnt--; 173 174 /* validate we have enough characters for WWPN */ 175 if ((cnt != (16+1+16)) || (name[16] != ':')) 176 return -EINVAL; 177 178 rc = tcm_qla2xxx_npiv_extract_wwn(&name[0], wwpn); 179 if (rc != 0) 180 return rc; 181 182 rc = tcm_qla2xxx_npiv_extract_wwn(&name[17], wwnn); 183 if (rc != 0) 184 return rc; 185 186 return 0; 187 } 188 189 static char *tcm_qla2xxx_npiv_get_fabric_name(void) 190 { 191 return "qla2xxx_npiv"; 192 } 193 194 static u8 tcm_qla2xxx_get_fabric_proto_ident(struct se_portal_group *se_tpg) 195 { 196 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 197 struct tcm_qla2xxx_tpg, se_tpg); 198 struct tcm_qla2xxx_lport *lport = tpg->lport; 199 u8 proto_id; 200 201 switch (lport->lport_proto_id) { 202 case SCSI_PROTOCOL_FCP: 203 default: 204 proto_id = fc_get_fabric_proto_ident(se_tpg); 205 break; 206 } 207 208 return proto_id; 209 } 210 211 static char *tcm_qla2xxx_get_fabric_wwn(struct se_portal_group *se_tpg) 212 { 213 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 214 struct tcm_qla2xxx_tpg, se_tpg); 215 struct tcm_qla2xxx_lport *lport = tpg->lport; 216 217 return lport->lport_naa_name; 218 } 219 220 static u16 tcm_qla2xxx_get_tag(struct se_portal_group *se_tpg) 221 { 222 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 223 struct tcm_qla2xxx_tpg, se_tpg); 224 return tpg->lport_tpgt; 225 } 226 227 static u32 tcm_qla2xxx_get_default_depth(struct se_portal_group *se_tpg) 228 { 229 return 1; 230 } 231 232 static u32 tcm_qla2xxx_get_pr_transport_id( 233 struct se_portal_group *se_tpg, 234 struct se_node_acl *se_nacl, 235 struct t10_pr_registration *pr_reg, 236 int *format_code, 237 unsigned char *buf) 238 { 239 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 240 struct tcm_qla2xxx_tpg, se_tpg); 241 struct tcm_qla2xxx_lport *lport = tpg->lport; 242 int ret = 0; 243 244 switch (lport->lport_proto_id) { 245 case SCSI_PROTOCOL_FCP: 246 default: 247 ret = fc_get_pr_transport_id(se_tpg, se_nacl, pr_reg, 248 format_code, buf); 249 break; 250 } 251 252 return ret; 253 } 254 255 static u32 tcm_qla2xxx_get_pr_transport_id_len( 256 struct se_portal_group *se_tpg, 257 struct se_node_acl *se_nacl, 258 struct t10_pr_registration *pr_reg, 259 int *format_code) 260 { 261 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 262 struct tcm_qla2xxx_tpg, se_tpg); 263 struct tcm_qla2xxx_lport *lport = tpg->lport; 264 int ret = 0; 265 266 switch (lport->lport_proto_id) { 267 case SCSI_PROTOCOL_FCP: 268 default: 269 ret = fc_get_pr_transport_id_len(se_tpg, se_nacl, pr_reg, 270 format_code); 271 break; 272 } 273 274 return ret; 275 } 276 277 static char *tcm_qla2xxx_parse_pr_out_transport_id( 278 struct se_portal_group *se_tpg, 279 const char *buf, 280 u32 *out_tid_len, 281 char **port_nexus_ptr) 282 { 283 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 284 struct tcm_qla2xxx_tpg, se_tpg); 285 struct tcm_qla2xxx_lport *lport = tpg->lport; 286 char *tid = NULL; 287 288 switch (lport->lport_proto_id) { 289 case SCSI_PROTOCOL_FCP: 290 default: 291 tid = fc_parse_pr_out_transport_id(se_tpg, buf, out_tid_len, 292 port_nexus_ptr); 293 break; 294 } 295 296 return tid; 297 } 298 299 static int tcm_qla2xxx_check_demo_mode(struct se_portal_group *se_tpg) 300 { 301 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 302 struct tcm_qla2xxx_tpg, se_tpg); 303 304 return tpg->tpg_attrib.generate_node_acls; 305 } 306 307 static int tcm_qla2xxx_check_demo_mode_cache(struct se_portal_group *se_tpg) 308 { 309 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 310 struct tcm_qla2xxx_tpg, se_tpg); 311 312 return tpg->tpg_attrib.cache_dynamic_acls; 313 } 314 315 static int tcm_qla2xxx_check_demo_write_protect(struct se_portal_group *se_tpg) 316 { 317 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 318 struct tcm_qla2xxx_tpg, se_tpg); 319 320 return tpg->tpg_attrib.demo_mode_write_protect; 321 } 322 323 static int tcm_qla2xxx_check_prod_write_protect(struct se_portal_group *se_tpg) 324 { 325 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 326 struct tcm_qla2xxx_tpg, se_tpg); 327 328 return tpg->tpg_attrib.prod_mode_write_protect; 329 } 330 331 static int tcm_qla2xxx_check_demo_mode_login_only(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 tpg->tpg_attrib.demo_mode_login_only; 337 } 338 339 static struct se_node_acl *tcm_qla2xxx_alloc_fabric_acl( 340 struct se_portal_group *se_tpg) 341 { 342 struct tcm_qla2xxx_nacl *nacl; 343 344 nacl = kzalloc(sizeof(struct tcm_qla2xxx_nacl), GFP_KERNEL); 345 if (!nacl) { 346 pr_err("Unable to allocate struct tcm_qla2xxx_nacl\n"); 347 return NULL; 348 } 349 350 return &nacl->se_node_acl; 351 } 352 353 static void tcm_qla2xxx_release_fabric_acl( 354 struct se_portal_group *se_tpg, 355 struct se_node_acl *se_nacl) 356 { 357 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl, 358 struct tcm_qla2xxx_nacl, se_node_acl); 359 kfree(nacl); 360 } 361 362 static u32 tcm_qla2xxx_tpg_get_inst_index(struct se_portal_group *se_tpg) 363 { 364 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 365 struct tcm_qla2xxx_tpg, se_tpg); 366 367 return tpg->lport_tpgt; 368 } 369 370 static void tcm_qla2xxx_complete_mcmd(struct work_struct *work) 371 { 372 struct qla_tgt_mgmt_cmd *mcmd = container_of(work, 373 struct qla_tgt_mgmt_cmd, free_work); 374 375 transport_generic_free_cmd(&mcmd->se_cmd, 0); 376 } 377 378 /* 379 * Called from qla_target_template->free_mcmd(), and will call 380 * tcm_qla2xxx_release_cmd() via normal struct target_core_fabric_ops 381 * release callback. qla_hw_data->hardware_lock is expected to be held 382 */ 383 static void tcm_qla2xxx_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd) 384 { 385 INIT_WORK(&mcmd->free_work, tcm_qla2xxx_complete_mcmd); 386 queue_work(tcm_qla2xxx_free_wq, &mcmd->free_work); 387 } 388 389 static void tcm_qla2xxx_complete_free(struct work_struct *work) 390 { 391 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 392 393 cmd->cmd_in_wq = 0; 394 395 WARN_ON(cmd->cmd_flags & BIT_16); 396 397 cmd->cmd_flags |= BIT_16; 398 transport_generic_free_cmd(&cmd->se_cmd, 0); 399 } 400 401 /* 402 * Called from qla_target_template->free_cmd(), and will call 403 * tcm_qla2xxx_release_cmd via normal struct target_core_fabric_ops 404 * release callback. qla_hw_data->hardware_lock is expected to be held 405 */ 406 static void tcm_qla2xxx_free_cmd(struct qla_tgt_cmd *cmd) 407 { 408 cmd->cmd_in_wq = 1; 409 INIT_WORK(&cmd->work, tcm_qla2xxx_complete_free); 410 queue_work(tcm_qla2xxx_free_wq, &cmd->work); 411 } 412 413 /* 414 * Called from struct target_core_fabric_ops->check_stop_free() context 415 */ 416 static int tcm_qla2xxx_check_stop_free(struct se_cmd *se_cmd) 417 { 418 struct qla_tgt_cmd *cmd; 419 420 if ((se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) == 0) { 421 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd); 422 cmd->cmd_flags |= BIT_14; 423 } 424 425 return target_put_sess_cmd(se_cmd->se_sess, se_cmd); 426 } 427 428 /* tcm_qla2xxx_release_cmd - Callback from TCM Core to release underlying 429 * fabric descriptor @se_cmd command to release 430 */ 431 static void tcm_qla2xxx_release_cmd(struct se_cmd *se_cmd) 432 { 433 struct qla_tgt_cmd *cmd; 434 435 if (se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) { 436 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd, 437 struct qla_tgt_mgmt_cmd, se_cmd); 438 qlt_free_mcmd(mcmd); 439 return; 440 } 441 442 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd); 443 qlt_free_cmd(cmd); 444 } 445 446 static int tcm_qla2xxx_shutdown_session(struct se_session *se_sess) 447 { 448 struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr; 449 struct scsi_qla_host *vha; 450 unsigned long flags; 451 452 BUG_ON(!sess); 453 vha = sess->vha; 454 455 spin_lock_irqsave(&vha->hw->hardware_lock, flags); 456 target_sess_cmd_list_set_waiting(se_sess); 457 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags); 458 459 return 1; 460 } 461 462 static void tcm_qla2xxx_close_session(struct se_session *se_sess) 463 { 464 struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr; 465 struct scsi_qla_host *vha; 466 unsigned long flags; 467 468 BUG_ON(!sess); 469 vha = sess->vha; 470 471 spin_lock_irqsave(&vha->hw->hardware_lock, flags); 472 qlt_unreg_sess(sess); 473 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags); 474 } 475 476 static u32 tcm_qla2xxx_sess_get_index(struct se_session *se_sess) 477 { 478 return 0; 479 } 480 481 static int tcm_qla2xxx_write_pending(struct se_cmd *se_cmd) 482 { 483 struct qla_tgt_cmd *cmd = container_of(se_cmd, 484 struct qla_tgt_cmd, se_cmd); 485 486 cmd->bufflen = se_cmd->data_length; 487 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd); 488 489 cmd->sg_cnt = se_cmd->t_data_nents; 490 cmd->sg = se_cmd->t_data_sg; 491 492 cmd->prot_sg_cnt = se_cmd->t_prot_nents; 493 cmd->prot_sg = se_cmd->t_prot_sg; 494 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size; 495 se_cmd->pi_err = 0; 496 497 /* 498 * qla_target.c:qlt_rdy_to_xfer() will call pci_map_sg() to setup 499 * the SGL mappings into PCIe memory for incoming FCP WRITE data. 500 */ 501 return qlt_rdy_to_xfer(cmd); 502 } 503 504 static int tcm_qla2xxx_write_pending_status(struct se_cmd *se_cmd) 505 { 506 unsigned long flags; 507 /* 508 * Check for WRITE_PENDING status to determine if we need to wait for 509 * CTIO aborts to be posted via hardware in tcm_qla2xxx_handle_data(). 510 */ 511 spin_lock_irqsave(&se_cmd->t_state_lock, flags); 512 if (se_cmd->t_state == TRANSPORT_WRITE_PENDING || 513 se_cmd->t_state == TRANSPORT_COMPLETE_QF_WP) { 514 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags); 515 wait_for_completion_timeout(&se_cmd->t_transport_stop_comp, 516 3000); 517 return 0; 518 } 519 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags); 520 521 return 0; 522 } 523 524 static void tcm_qla2xxx_set_default_node_attrs(struct se_node_acl *nacl) 525 { 526 return; 527 } 528 529 static u32 tcm_qla2xxx_get_task_tag(struct se_cmd *se_cmd) 530 { 531 struct qla_tgt_cmd *cmd; 532 533 /* check for task mgmt cmd */ 534 if (se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) 535 return 0xffffffff; 536 537 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd); 538 539 return cmd->tag; 540 } 541 542 static int tcm_qla2xxx_get_cmd_state(struct se_cmd *se_cmd) 543 { 544 return 0; 545 } 546 547 /* 548 * Called from process context in qla_target.c:qlt_do_work() code 549 */ 550 static int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd, 551 unsigned char *cdb, uint32_t data_length, int fcp_task_attr, 552 int data_dir, int bidi) 553 { 554 struct se_cmd *se_cmd = &cmd->se_cmd; 555 struct se_session *se_sess; 556 struct qla_tgt_sess *sess; 557 int flags = TARGET_SCF_ACK_KREF; 558 559 if (bidi) 560 flags |= TARGET_SCF_BIDI_OP; 561 562 sess = cmd->sess; 563 if (!sess) { 564 pr_err("Unable to locate struct qla_tgt_sess from qla_tgt_cmd\n"); 565 return -EINVAL; 566 } 567 568 se_sess = sess->se_sess; 569 if (!se_sess) { 570 pr_err("Unable to locate active struct se_session\n"); 571 return -EINVAL; 572 } 573 574 return target_submit_cmd(se_cmd, se_sess, cdb, &cmd->sense_buffer[0], 575 cmd->unpacked_lun, data_length, fcp_task_attr, 576 data_dir, flags); 577 } 578 579 static void tcm_qla2xxx_handle_data_work(struct work_struct *work) 580 { 581 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 582 583 /* 584 * Ensure that the complete FCP WRITE payload has been received. 585 * Otherwise return an exception via CHECK_CONDITION status. 586 */ 587 cmd->cmd_in_wq = 0; 588 cmd->cmd_flags |= BIT_11; 589 if (!cmd->write_data_transferred) { 590 /* 591 * Check if se_cmd has already been aborted via LUN_RESET, and 592 * waiting upon completion in tcm_qla2xxx_write_pending_status() 593 */ 594 if (cmd->se_cmd.transport_state & CMD_T_ABORTED) { 595 complete(&cmd->se_cmd.t_transport_stop_comp); 596 return; 597 } 598 599 if (cmd->se_cmd.pi_err) 600 transport_generic_request_failure(&cmd->se_cmd, 601 cmd->se_cmd.pi_err); 602 else 603 transport_generic_request_failure(&cmd->se_cmd, 604 TCM_CHECK_CONDITION_ABORT_CMD); 605 606 return; 607 } 608 609 return target_execute_cmd(&cmd->se_cmd); 610 } 611 612 /* 613 * Called from qla_target.c:qlt_do_ctio_completion() 614 */ 615 static void tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd) 616 { 617 cmd->cmd_flags |= BIT_10; 618 cmd->cmd_in_wq = 1; 619 INIT_WORK(&cmd->work, tcm_qla2xxx_handle_data_work); 620 queue_work(tcm_qla2xxx_free_wq, &cmd->work); 621 } 622 623 static void tcm_qla2xxx_handle_dif_work(struct work_struct *work) 624 { 625 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 626 627 /* take an extra kref to prevent cmd free too early. 628 * need to wait for SCSI status/check condition to 629 * finish responding generate by transport_generic_request_failure. 630 */ 631 kref_get(&cmd->se_cmd.cmd_kref); 632 transport_generic_request_failure(&cmd->se_cmd, cmd->se_cmd.pi_err); 633 } 634 635 /* 636 * Called from qla_target.c:qlt_do_ctio_completion() 637 */ 638 static void tcm_qla2xxx_handle_dif_err(struct qla_tgt_cmd *cmd) 639 { 640 INIT_WORK(&cmd->work, tcm_qla2xxx_handle_dif_work); 641 queue_work(tcm_qla2xxx_free_wq, &cmd->work); 642 } 643 644 /* 645 * Called from qla_target.c:qlt_issue_task_mgmt() 646 */ 647 static int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *mcmd, uint32_t lun, 648 uint8_t tmr_func, uint32_t tag) 649 { 650 struct qla_tgt_sess *sess = mcmd->sess; 651 struct se_cmd *se_cmd = &mcmd->se_cmd; 652 653 return target_submit_tmr(se_cmd, sess->se_sess, NULL, lun, mcmd, 654 tmr_func, GFP_ATOMIC, tag, TARGET_SCF_ACK_KREF); 655 } 656 657 static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd) 658 { 659 struct qla_tgt_cmd *cmd = container_of(se_cmd, 660 struct qla_tgt_cmd, se_cmd); 661 662 cmd->cmd_flags |= BIT_4; 663 cmd->bufflen = se_cmd->data_length; 664 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd); 665 cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED); 666 667 cmd->sg_cnt = se_cmd->t_data_nents; 668 cmd->sg = se_cmd->t_data_sg; 669 cmd->offset = 0; 670 cmd->cmd_flags |= BIT_3; 671 672 cmd->prot_sg_cnt = se_cmd->t_prot_nents; 673 cmd->prot_sg = se_cmd->t_prot_sg; 674 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size; 675 se_cmd->pi_err = 0; 676 677 /* 678 * Now queue completed DATA_IN the qla2xxx LLD and response ring 679 */ 680 return qlt_xmit_response(cmd, QLA_TGT_XMIT_DATA|QLA_TGT_XMIT_STATUS, 681 se_cmd->scsi_status); 682 } 683 684 static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd) 685 { 686 struct qla_tgt_cmd *cmd = container_of(se_cmd, 687 struct qla_tgt_cmd, se_cmd); 688 int xmit_type = QLA_TGT_XMIT_STATUS; 689 690 cmd->bufflen = se_cmd->data_length; 691 cmd->sg = NULL; 692 cmd->sg_cnt = 0; 693 cmd->offset = 0; 694 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd); 695 cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED); 696 if (cmd->cmd_flags & BIT_5) { 697 pr_crit("Bit_5 already set for cmd = %p.\n", cmd); 698 dump_stack(); 699 } 700 cmd->cmd_flags |= BIT_5; 701 702 if (se_cmd->data_direction == DMA_FROM_DEVICE) { 703 /* 704 * For FCP_READ with CHECK_CONDITION status, clear cmd->bufflen 705 * for qla_tgt_xmit_response LLD code 706 */ 707 if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) { 708 se_cmd->se_cmd_flags &= ~SCF_OVERFLOW_BIT; 709 se_cmd->residual_count = 0; 710 } 711 se_cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT; 712 se_cmd->residual_count += se_cmd->data_length; 713 714 cmd->bufflen = 0; 715 } 716 /* 717 * Now queue status response to qla2xxx LLD code and response ring 718 */ 719 return qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status); 720 } 721 722 static void tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd) 723 { 724 struct se_tmr_req *se_tmr = se_cmd->se_tmr_req; 725 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd, 726 struct qla_tgt_mgmt_cmd, se_cmd); 727 728 pr_debug("queue_tm_rsp: mcmd: %p func: 0x%02x response: 0x%02x\n", 729 mcmd, se_tmr->function, se_tmr->response); 730 /* 731 * Do translation between TCM TM response codes and 732 * QLA2xxx FC TM response codes. 733 */ 734 switch (se_tmr->response) { 735 case TMR_FUNCTION_COMPLETE: 736 mcmd->fc_tm_rsp = FC_TM_SUCCESS; 737 break; 738 case TMR_TASK_DOES_NOT_EXIST: 739 mcmd->fc_tm_rsp = FC_TM_BAD_CMD; 740 break; 741 case TMR_FUNCTION_REJECTED: 742 mcmd->fc_tm_rsp = FC_TM_REJECT; 743 break; 744 case TMR_LUN_DOES_NOT_EXIST: 745 default: 746 mcmd->fc_tm_rsp = FC_TM_FAILED; 747 break; 748 } 749 /* 750 * Queue the TM response to QLA2xxx LLD to build a 751 * CTIO response packet. 752 */ 753 qlt_xmit_tm_rsp(mcmd); 754 } 755 756 static void tcm_qla2xxx_aborted_task(struct se_cmd *se_cmd) 757 { 758 struct qla_tgt_cmd *cmd = container_of(se_cmd, 759 struct qla_tgt_cmd, se_cmd); 760 struct scsi_qla_host *vha = cmd->vha; 761 struct qla_hw_data *ha = vha->hw; 762 763 if (!cmd->sg_mapped) 764 return; 765 766 pci_unmap_sg(ha->pdev, cmd->sg, cmd->sg_cnt, cmd->dma_data_direction); 767 cmd->sg_mapped = 0; 768 } 769 770 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *, 771 struct tcm_qla2xxx_nacl *, struct qla_tgt_sess *); 772 /* 773 * Expected to be called with struct qla_hw_data->hardware_lock held 774 */ 775 static void tcm_qla2xxx_clear_nacl_from_fcport_map(struct qla_tgt_sess *sess) 776 { 777 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl; 778 struct se_portal_group *se_tpg = se_nacl->se_tpg; 779 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn; 780 struct tcm_qla2xxx_lport *lport = container_of(se_wwn, 781 struct tcm_qla2xxx_lport, lport_wwn); 782 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl, 783 struct tcm_qla2xxx_nacl, se_node_acl); 784 void *node; 785 786 pr_debug("fc_rport domain: port_id 0x%06x\n", nacl->nport_id); 787 788 node = btree_remove32(&lport->lport_fcport_map, nacl->nport_id); 789 if (WARN_ON(node && (node != se_nacl))) { 790 /* 791 * The nacl no longer matches what we think it should be. 792 * Most likely a new dynamic acl has been added while 793 * someone dropped the hardware lock. It clearly is a 794 * bug elsewhere, but this bit can't make things worse. 795 */ 796 btree_insert32(&lport->lport_fcport_map, nacl->nport_id, 797 node, GFP_ATOMIC); 798 } 799 800 pr_debug("Removed from fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%06x\n", 801 se_nacl, nacl->nport_wwnn, nacl->nport_id); 802 /* 803 * Now clear the se_nacl and session pointers from our HW lport lookup 804 * table mapping for this initiator's fabric S_ID and LOOP_ID entries. 805 * 806 * This is done ahead of callbacks into tcm_qla2xxx_free_session() -> 807 * target_wait_for_sess_cmds() before the session waits for outstanding 808 * I/O to complete, to avoid a race between session shutdown execution 809 * and incoming ATIOs or TMRs picking up a stale se_node_act reference. 810 */ 811 tcm_qla2xxx_clear_sess_lookup(lport, nacl, sess); 812 } 813 814 static void tcm_qla2xxx_release_session(struct kref *kref) 815 { 816 struct se_session *se_sess = container_of(kref, 817 struct se_session, sess_kref); 818 819 qlt_unreg_sess(se_sess->fabric_sess_ptr); 820 } 821 822 static void tcm_qla2xxx_put_session(struct se_session *se_sess) 823 { 824 struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr; 825 struct qla_hw_data *ha = sess->vha->hw; 826 unsigned long flags; 827 828 spin_lock_irqsave(&ha->hardware_lock, flags); 829 kref_put(&se_sess->sess_kref, tcm_qla2xxx_release_session); 830 spin_unlock_irqrestore(&ha->hardware_lock, flags); 831 } 832 833 static void tcm_qla2xxx_put_sess(struct qla_tgt_sess *sess) 834 { 835 if (!sess) 836 return; 837 838 assert_spin_locked(&sess->vha->hw->hardware_lock); 839 kref_put(&sess->se_sess->sess_kref, tcm_qla2xxx_release_session); 840 } 841 842 static void tcm_qla2xxx_shutdown_sess(struct qla_tgt_sess *sess) 843 { 844 assert_spin_locked(&sess->vha->hw->hardware_lock); 845 target_sess_cmd_list_set_waiting(sess->se_sess); 846 } 847 848 static struct se_node_acl *tcm_qla2xxx_make_nodeacl( 849 struct se_portal_group *se_tpg, 850 struct config_group *group, 851 const char *name) 852 { 853 struct se_node_acl *se_nacl, *se_nacl_new; 854 struct tcm_qla2xxx_nacl *nacl; 855 u64 wwnn; 856 u32 qla2xxx_nexus_depth; 857 858 if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0) 859 return ERR_PTR(-EINVAL); 860 861 se_nacl_new = tcm_qla2xxx_alloc_fabric_acl(se_tpg); 862 if (!se_nacl_new) 863 return ERR_PTR(-ENOMEM); 864 /* #warning FIXME: Hardcoded qla2xxx_nexus depth in tcm_qla2xxx_make_nodeacl */ 865 qla2xxx_nexus_depth = 1; 866 867 /* 868 * se_nacl_new may be released by core_tpg_add_initiator_node_acl() 869 * when converting a NodeACL from demo mode -> explict 870 */ 871 se_nacl = core_tpg_add_initiator_node_acl(se_tpg, se_nacl_new, 872 name, qla2xxx_nexus_depth); 873 if (IS_ERR(se_nacl)) { 874 tcm_qla2xxx_release_fabric_acl(se_tpg, se_nacl_new); 875 return se_nacl; 876 } 877 /* 878 * Locate our struct tcm_qla2xxx_nacl and set the FC Nport WWPN 879 */ 880 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 881 nacl->nport_wwnn = wwnn; 882 tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn); 883 884 return se_nacl; 885 } 886 887 static void tcm_qla2xxx_drop_nodeacl(struct se_node_acl *se_acl) 888 { 889 struct se_portal_group *se_tpg = se_acl->se_tpg; 890 struct tcm_qla2xxx_nacl *nacl = container_of(se_acl, 891 struct tcm_qla2xxx_nacl, se_node_acl); 892 893 core_tpg_del_initiator_node_acl(se_tpg, se_acl, 1); 894 kfree(nacl); 895 } 896 897 /* Start items for tcm_qla2xxx_tpg_attrib_cit */ 898 899 #define DEF_QLA_TPG_ATTRIB(name) \ 900 \ 901 static ssize_t tcm_qla2xxx_tpg_attrib_show_##name( \ 902 struct se_portal_group *se_tpg, \ 903 char *page) \ 904 { \ 905 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \ 906 struct tcm_qla2xxx_tpg, se_tpg); \ 907 \ 908 return sprintf(page, "%u\n", tpg->tpg_attrib.name); \ 909 } \ 910 \ 911 static ssize_t tcm_qla2xxx_tpg_attrib_store_##name( \ 912 struct se_portal_group *se_tpg, \ 913 const char *page, \ 914 size_t count) \ 915 { \ 916 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \ 917 struct tcm_qla2xxx_tpg, se_tpg); \ 918 unsigned long val; \ 919 int ret; \ 920 \ 921 ret = kstrtoul(page, 0, &val); \ 922 if (ret < 0) { \ 923 pr_err("kstrtoul() failed with" \ 924 " ret: %d\n", ret); \ 925 return -EINVAL; \ 926 } \ 927 ret = tcm_qla2xxx_set_attrib_##name(tpg, val); \ 928 \ 929 return (!ret) ? count : -EINVAL; \ 930 } 931 932 #define DEF_QLA_TPG_ATTR_BOOL(_name) \ 933 \ 934 static int tcm_qla2xxx_set_attrib_##_name( \ 935 struct tcm_qla2xxx_tpg *tpg, \ 936 unsigned long val) \ 937 { \ 938 struct tcm_qla2xxx_tpg_attrib *a = &tpg->tpg_attrib; \ 939 \ 940 if ((val != 0) && (val != 1)) { \ 941 pr_err("Illegal boolean value %lu\n", val); \ 942 return -EINVAL; \ 943 } \ 944 \ 945 a->_name = val; \ 946 return 0; \ 947 } 948 949 #define QLA_TPG_ATTR(_name, _mode) \ 950 TF_TPG_ATTRIB_ATTR(tcm_qla2xxx, _name, _mode); 951 952 /* 953 * Define tcm_qla2xxx_tpg_attrib_s_generate_node_acls 954 */ 955 DEF_QLA_TPG_ATTR_BOOL(generate_node_acls); 956 DEF_QLA_TPG_ATTRIB(generate_node_acls); 957 QLA_TPG_ATTR(generate_node_acls, S_IRUGO | S_IWUSR); 958 959 /* 960 Define tcm_qla2xxx_attrib_s_cache_dynamic_acls 961 */ 962 DEF_QLA_TPG_ATTR_BOOL(cache_dynamic_acls); 963 DEF_QLA_TPG_ATTRIB(cache_dynamic_acls); 964 QLA_TPG_ATTR(cache_dynamic_acls, S_IRUGO | S_IWUSR); 965 966 /* 967 * Define tcm_qla2xxx_tpg_attrib_s_demo_mode_write_protect 968 */ 969 DEF_QLA_TPG_ATTR_BOOL(demo_mode_write_protect); 970 DEF_QLA_TPG_ATTRIB(demo_mode_write_protect); 971 QLA_TPG_ATTR(demo_mode_write_protect, S_IRUGO | S_IWUSR); 972 973 /* 974 * Define tcm_qla2xxx_tpg_attrib_s_prod_mode_write_protect 975 */ 976 DEF_QLA_TPG_ATTR_BOOL(prod_mode_write_protect); 977 DEF_QLA_TPG_ATTRIB(prod_mode_write_protect); 978 QLA_TPG_ATTR(prod_mode_write_protect, S_IRUGO | S_IWUSR); 979 980 /* 981 * Define tcm_qla2xxx_tpg_attrib_s_demo_mode_login_only 982 */ 983 DEF_QLA_TPG_ATTR_BOOL(demo_mode_login_only); 984 DEF_QLA_TPG_ATTRIB(demo_mode_login_only); 985 QLA_TPG_ATTR(demo_mode_login_only, S_IRUGO | S_IWUSR); 986 987 static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = { 988 &tcm_qla2xxx_tpg_attrib_generate_node_acls.attr, 989 &tcm_qla2xxx_tpg_attrib_cache_dynamic_acls.attr, 990 &tcm_qla2xxx_tpg_attrib_demo_mode_write_protect.attr, 991 &tcm_qla2xxx_tpg_attrib_prod_mode_write_protect.attr, 992 &tcm_qla2xxx_tpg_attrib_demo_mode_login_only.attr, 993 NULL, 994 }; 995 996 /* End items for tcm_qla2xxx_tpg_attrib_cit */ 997 998 static ssize_t tcm_qla2xxx_tpg_show_enable( 999 struct se_portal_group *se_tpg, 1000 char *page) 1001 { 1002 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1003 struct tcm_qla2xxx_tpg, se_tpg); 1004 1005 return snprintf(page, PAGE_SIZE, "%d\n", 1006 atomic_read(&tpg->lport_tpg_enabled)); 1007 } 1008 1009 static void tcm_qla2xxx_depend_tpg(struct work_struct *work) 1010 { 1011 struct tcm_qla2xxx_tpg *base_tpg = container_of(work, 1012 struct tcm_qla2xxx_tpg, tpg_base_work); 1013 struct se_portal_group *se_tpg = &base_tpg->se_tpg; 1014 struct scsi_qla_host *base_vha = base_tpg->lport->qla_vha; 1015 1016 if (!configfs_depend_item(se_tpg->se_tpg_tfo->tf_subsys, 1017 &se_tpg->tpg_group.cg_item)) { 1018 atomic_set(&base_tpg->lport_tpg_enabled, 1); 1019 qlt_enable_vha(base_vha); 1020 } 1021 complete(&base_tpg->tpg_base_comp); 1022 } 1023 1024 static void tcm_qla2xxx_undepend_tpg(struct work_struct *work) 1025 { 1026 struct tcm_qla2xxx_tpg *base_tpg = container_of(work, 1027 struct tcm_qla2xxx_tpg, tpg_base_work); 1028 struct se_portal_group *se_tpg = &base_tpg->se_tpg; 1029 struct scsi_qla_host *base_vha = base_tpg->lport->qla_vha; 1030 1031 if (!qlt_stop_phase1(base_vha->vha_tgt.qla_tgt)) { 1032 atomic_set(&base_tpg->lport_tpg_enabled, 0); 1033 configfs_undepend_item(se_tpg->se_tpg_tfo->tf_subsys, 1034 &se_tpg->tpg_group.cg_item); 1035 } 1036 complete(&base_tpg->tpg_base_comp); 1037 } 1038 1039 static ssize_t tcm_qla2xxx_tpg_store_enable( 1040 struct se_portal_group *se_tpg, 1041 const char *page, 1042 size_t count) 1043 { 1044 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1045 struct tcm_qla2xxx_tpg, se_tpg); 1046 unsigned long op; 1047 int rc; 1048 1049 rc = kstrtoul(page, 0, &op); 1050 if (rc < 0) { 1051 pr_err("kstrtoul() returned %d\n", rc); 1052 return -EINVAL; 1053 } 1054 if ((op != 1) && (op != 0)) { 1055 pr_err("Illegal value for tpg_enable: %lu\n", op); 1056 return -EINVAL; 1057 } 1058 if (op) { 1059 if (atomic_read(&tpg->lport_tpg_enabled)) 1060 return -EEXIST; 1061 1062 INIT_WORK(&tpg->tpg_base_work, tcm_qla2xxx_depend_tpg); 1063 } else { 1064 if (!atomic_read(&tpg->lport_tpg_enabled)) 1065 return count; 1066 1067 INIT_WORK(&tpg->tpg_base_work, tcm_qla2xxx_undepend_tpg); 1068 } 1069 init_completion(&tpg->tpg_base_comp); 1070 schedule_work(&tpg->tpg_base_work); 1071 wait_for_completion(&tpg->tpg_base_comp); 1072 1073 if (op) { 1074 if (!atomic_read(&tpg->lport_tpg_enabled)) 1075 return -ENODEV; 1076 } else { 1077 if (atomic_read(&tpg->lport_tpg_enabled)) 1078 return -EPERM; 1079 } 1080 return count; 1081 } 1082 1083 TF_TPG_BASE_ATTR(tcm_qla2xxx, enable, S_IRUGO | S_IWUSR); 1084 1085 static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = { 1086 &tcm_qla2xxx_tpg_enable.attr, 1087 NULL, 1088 }; 1089 1090 static struct se_portal_group *tcm_qla2xxx_make_tpg( 1091 struct se_wwn *wwn, 1092 struct config_group *group, 1093 const char *name) 1094 { 1095 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1096 struct tcm_qla2xxx_lport, lport_wwn); 1097 struct tcm_qla2xxx_tpg *tpg; 1098 unsigned long tpgt; 1099 int ret; 1100 1101 if (strstr(name, "tpgt_") != name) 1102 return ERR_PTR(-EINVAL); 1103 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX) 1104 return ERR_PTR(-EINVAL); 1105 1106 if ((tpgt != 1)) { 1107 pr_err("In non NPIV mode, a single TPG=1 is used for HW port mappings\n"); 1108 return ERR_PTR(-ENOSYS); 1109 } 1110 1111 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL); 1112 if (!tpg) { 1113 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n"); 1114 return ERR_PTR(-ENOMEM); 1115 } 1116 tpg->lport = lport; 1117 tpg->lport_tpgt = tpgt; 1118 /* 1119 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic 1120 * NodeACLs 1121 */ 1122 tpg->tpg_attrib.generate_node_acls = 1; 1123 tpg->tpg_attrib.demo_mode_write_protect = 1; 1124 tpg->tpg_attrib.cache_dynamic_acls = 1; 1125 tpg->tpg_attrib.demo_mode_login_only = 1; 1126 1127 ret = core_tpg_register(&tcm_qla2xxx_fabric_configfs->tf_ops, wwn, 1128 &tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL); 1129 if (ret < 0) { 1130 kfree(tpg); 1131 return NULL; 1132 } 1133 1134 lport->tpg_1 = tpg; 1135 1136 return &tpg->se_tpg; 1137 } 1138 1139 static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg) 1140 { 1141 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1142 struct tcm_qla2xxx_tpg, se_tpg); 1143 struct tcm_qla2xxx_lport *lport = tpg->lport; 1144 struct scsi_qla_host *vha = lport->qla_vha; 1145 /* 1146 * Call into qla2x_target.c LLD logic to shutdown the active 1147 * FC Nexuses and disable target mode operation for this qla_hw_data 1148 */ 1149 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stop) 1150 qlt_stop_phase1(vha->vha_tgt.qla_tgt); 1151 1152 core_tpg_deregister(se_tpg); 1153 /* 1154 * Clear local TPG=1 pointer for non NPIV mode. 1155 */ 1156 lport->tpg_1 = NULL; 1157 kfree(tpg); 1158 } 1159 1160 static ssize_t tcm_qla2xxx_npiv_tpg_show_enable( 1161 struct se_portal_group *se_tpg, 1162 char *page) 1163 { 1164 return tcm_qla2xxx_tpg_show_enable(se_tpg, page); 1165 } 1166 1167 static ssize_t tcm_qla2xxx_npiv_tpg_store_enable( 1168 struct se_portal_group *se_tpg, 1169 const char *page, 1170 size_t count) 1171 { 1172 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn; 1173 struct tcm_qla2xxx_lport *lport = container_of(se_wwn, 1174 struct tcm_qla2xxx_lport, lport_wwn); 1175 struct scsi_qla_host *vha = lport->qla_vha; 1176 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1177 struct tcm_qla2xxx_tpg, se_tpg); 1178 unsigned long op; 1179 int rc; 1180 1181 rc = kstrtoul(page, 0, &op); 1182 if (rc < 0) { 1183 pr_err("kstrtoul() returned %d\n", rc); 1184 return -EINVAL; 1185 } 1186 if ((op != 1) && (op != 0)) { 1187 pr_err("Illegal value for tpg_enable: %lu\n", op); 1188 return -EINVAL; 1189 } 1190 if (op) { 1191 if (atomic_read(&tpg->lport_tpg_enabled)) 1192 return -EEXIST; 1193 1194 atomic_set(&tpg->lport_tpg_enabled, 1); 1195 qlt_enable_vha(vha); 1196 } else { 1197 if (!atomic_read(&tpg->lport_tpg_enabled)) 1198 return count; 1199 1200 atomic_set(&tpg->lport_tpg_enabled, 0); 1201 qlt_stop_phase1(vha->vha_tgt.qla_tgt); 1202 } 1203 1204 return count; 1205 } 1206 1207 TF_TPG_BASE_ATTR(tcm_qla2xxx_npiv, enable, S_IRUGO | S_IWUSR); 1208 1209 static struct configfs_attribute *tcm_qla2xxx_npiv_tpg_attrs[] = { 1210 &tcm_qla2xxx_npiv_tpg_enable.attr, 1211 NULL, 1212 }; 1213 1214 static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg( 1215 struct se_wwn *wwn, 1216 struct config_group *group, 1217 const char *name) 1218 { 1219 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1220 struct tcm_qla2xxx_lport, lport_wwn); 1221 struct tcm_qla2xxx_tpg *tpg; 1222 unsigned long tpgt; 1223 int ret; 1224 1225 if (strstr(name, "tpgt_") != name) 1226 return ERR_PTR(-EINVAL); 1227 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX) 1228 return ERR_PTR(-EINVAL); 1229 1230 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL); 1231 if (!tpg) { 1232 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n"); 1233 return ERR_PTR(-ENOMEM); 1234 } 1235 tpg->lport = lport; 1236 tpg->lport_tpgt = tpgt; 1237 1238 /* 1239 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic 1240 * NodeACLs 1241 */ 1242 tpg->tpg_attrib.generate_node_acls = 1; 1243 tpg->tpg_attrib.demo_mode_write_protect = 1; 1244 tpg->tpg_attrib.cache_dynamic_acls = 1; 1245 tpg->tpg_attrib.demo_mode_login_only = 1; 1246 1247 ret = core_tpg_register(&tcm_qla2xxx_npiv_fabric_configfs->tf_ops, wwn, 1248 &tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL); 1249 if (ret < 0) { 1250 kfree(tpg); 1251 return NULL; 1252 } 1253 lport->tpg_1 = tpg; 1254 return &tpg->se_tpg; 1255 } 1256 1257 /* 1258 * Expected to be called with struct qla_hw_data->hardware_lock held 1259 */ 1260 static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_s_id( 1261 scsi_qla_host_t *vha, 1262 const uint8_t *s_id) 1263 { 1264 struct tcm_qla2xxx_lport *lport; 1265 struct se_node_acl *se_nacl; 1266 struct tcm_qla2xxx_nacl *nacl; 1267 u32 key; 1268 1269 lport = vha->vha_tgt.target_lport_ptr; 1270 if (!lport) { 1271 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1272 dump_stack(); 1273 return NULL; 1274 } 1275 1276 key = (((unsigned long)s_id[0] << 16) | 1277 ((unsigned long)s_id[1] << 8) | 1278 (unsigned long)s_id[2]); 1279 pr_debug("find_sess_by_s_id: 0x%06x\n", key); 1280 1281 se_nacl = btree_lookup32(&lport->lport_fcport_map, key); 1282 if (!se_nacl) { 1283 pr_debug("Unable to locate s_id: 0x%06x\n", key); 1284 return NULL; 1285 } 1286 pr_debug("find_sess_by_s_id: located se_nacl: %p, initiatorname: %s\n", 1287 se_nacl, se_nacl->initiatorname); 1288 1289 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1290 if (!nacl->qla_tgt_sess) { 1291 pr_err("Unable to locate struct qla_tgt_sess\n"); 1292 return NULL; 1293 } 1294 1295 return nacl->qla_tgt_sess; 1296 } 1297 1298 /* 1299 * Expected to be called with struct qla_hw_data->hardware_lock held 1300 */ 1301 static void tcm_qla2xxx_set_sess_by_s_id( 1302 struct tcm_qla2xxx_lport *lport, 1303 struct se_node_acl *new_se_nacl, 1304 struct tcm_qla2xxx_nacl *nacl, 1305 struct se_session *se_sess, 1306 struct qla_tgt_sess *qla_tgt_sess, 1307 uint8_t *s_id) 1308 { 1309 u32 key; 1310 void *slot; 1311 int rc; 1312 1313 key = (((unsigned long)s_id[0] << 16) | 1314 ((unsigned long)s_id[1] << 8) | 1315 (unsigned long)s_id[2]); 1316 pr_debug("set_sess_by_s_id: %06x\n", key); 1317 1318 slot = btree_lookup32(&lport->lport_fcport_map, key); 1319 if (!slot) { 1320 if (new_se_nacl) { 1321 pr_debug("Setting up new fc_port entry to new_se_nacl\n"); 1322 nacl->nport_id = key; 1323 rc = btree_insert32(&lport->lport_fcport_map, key, 1324 new_se_nacl, GFP_ATOMIC); 1325 if (rc) 1326 printk(KERN_ERR "Unable to insert s_id into fcport_map: %06x\n", 1327 (int)key); 1328 } else { 1329 pr_debug("Wiping nonexisting fc_port entry\n"); 1330 } 1331 1332 qla_tgt_sess->se_sess = se_sess; 1333 nacl->qla_tgt_sess = qla_tgt_sess; 1334 return; 1335 } 1336 1337 if (nacl->qla_tgt_sess) { 1338 if (new_se_nacl == NULL) { 1339 pr_debug("Clearing existing nacl->qla_tgt_sess and fc_port entry\n"); 1340 btree_remove32(&lport->lport_fcport_map, key); 1341 nacl->qla_tgt_sess = NULL; 1342 return; 1343 } 1344 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_port entry\n"); 1345 btree_update32(&lport->lport_fcport_map, key, new_se_nacl); 1346 qla_tgt_sess->se_sess = se_sess; 1347 nacl->qla_tgt_sess = qla_tgt_sess; 1348 return; 1349 } 1350 1351 if (new_se_nacl == NULL) { 1352 pr_debug("Clearing existing fc_port entry\n"); 1353 btree_remove32(&lport->lport_fcport_map, key); 1354 return; 1355 } 1356 1357 pr_debug("Replacing existing fc_port entry w/o active nacl->qla_tgt_sess\n"); 1358 btree_update32(&lport->lport_fcport_map, key, new_se_nacl); 1359 qla_tgt_sess->se_sess = se_sess; 1360 nacl->qla_tgt_sess = qla_tgt_sess; 1361 1362 pr_debug("Setup nacl->qla_tgt_sess %p by s_id for se_nacl: %p, initiatorname: %s\n", 1363 nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname); 1364 } 1365 1366 /* 1367 * Expected to be called with struct qla_hw_data->hardware_lock held 1368 */ 1369 static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_loop_id( 1370 scsi_qla_host_t *vha, 1371 const uint16_t loop_id) 1372 { 1373 struct tcm_qla2xxx_lport *lport; 1374 struct se_node_acl *se_nacl; 1375 struct tcm_qla2xxx_nacl *nacl; 1376 struct tcm_qla2xxx_fc_loopid *fc_loopid; 1377 1378 lport = vha->vha_tgt.target_lport_ptr; 1379 if (!lport) { 1380 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1381 dump_stack(); 1382 return NULL; 1383 } 1384 1385 pr_debug("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id); 1386 1387 fc_loopid = lport->lport_loopid_map + loop_id; 1388 se_nacl = fc_loopid->se_nacl; 1389 if (!se_nacl) { 1390 pr_debug("Unable to locate se_nacl by loop_id: 0x%04x\n", 1391 loop_id); 1392 return NULL; 1393 } 1394 1395 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1396 1397 if (!nacl->qla_tgt_sess) { 1398 pr_err("Unable to locate struct qla_tgt_sess\n"); 1399 return NULL; 1400 } 1401 1402 return nacl->qla_tgt_sess; 1403 } 1404 1405 /* 1406 * Expected to be called with struct qla_hw_data->hardware_lock held 1407 */ 1408 static void tcm_qla2xxx_set_sess_by_loop_id( 1409 struct tcm_qla2xxx_lport *lport, 1410 struct se_node_acl *new_se_nacl, 1411 struct tcm_qla2xxx_nacl *nacl, 1412 struct se_session *se_sess, 1413 struct qla_tgt_sess *qla_tgt_sess, 1414 uint16_t loop_id) 1415 { 1416 struct se_node_acl *saved_nacl; 1417 struct tcm_qla2xxx_fc_loopid *fc_loopid; 1418 1419 pr_debug("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id); 1420 1421 fc_loopid = &((struct tcm_qla2xxx_fc_loopid *) 1422 lport->lport_loopid_map)[loop_id]; 1423 1424 saved_nacl = fc_loopid->se_nacl; 1425 if (!saved_nacl) { 1426 pr_debug("Setting up new fc_loopid->se_nacl to new_se_nacl\n"); 1427 fc_loopid->se_nacl = new_se_nacl; 1428 if (qla_tgt_sess->se_sess != se_sess) 1429 qla_tgt_sess->se_sess = se_sess; 1430 if (nacl->qla_tgt_sess != qla_tgt_sess) 1431 nacl->qla_tgt_sess = qla_tgt_sess; 1432 return; 1433 } 1434 1435 if (nacl->qla_tgt_sess) { 1436 if (new_se_nacl == NULL) { 1437 pr_debug("Clearing nacl->qla_tgt_sess and fc_loopid->se_nacl\n"); 1438 fc_loopid->se_nacl = NULL; 1439 nacl->qla_tgt_sess = NULL; 1440 return; 1441 } 1442 1443 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_loopid->se_nacl\n"); 1444 fc_loopid->se_nacl = new_se_nacl; 1445 if (qla_tgt_sess->se_sess != se_sess) 1446 qla_tgt_sess->se_sess = se_sess; 1447 if (nacl->qla_tgt_sess != qla_tgt_sess) 1448 nacl->qla_tgt_sess = qla_tgt_sess; 1449 return; 1450 } 1451 1452 if (new_se_nacl == NULL) { 1453 pr_debug("Clearing fc_loopid->se_nacl\n"); 1454 fc_loopid->se_nacl = NULL; 1455 return; 1456 } 1457 1458 pr_debug("Replacing existing fc_loopid->se_nacl w/o active nacl->qla_tgt_sess\n"); 1459 fc_loopid->se_nacl = new_se_nacl; 1460 if (qla_tgt_sess->se_sess != se_sess) 1461 qla_tgt_sess->se_sess = se_sess; 1462 if (nacl->qla_tgt_sess != qla_tgt_sess) 1463 nacl->qla_tgt_sess = qla_tgt_sess; 1464 1465 pr_debug("Setup nacl->qla_tgt_sess %p by loop_id for se_nacl: %p, initiatorname: %s\n", 1466 nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname); 1467 } 1468 1469 /* 1470 * Should always be called with qla_hw_data->hardware_lock held. 1471 */ 1472 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *lport, 1473 struct tcm_qla2xxx_nacl *nacl, struct qla_tgt_sess *sess) 1474 { 1475 struct se_session *se_sess = sess->se_sess; 1476 unsigned char be_sid[3]; 1477 1478 be_sid[0] = sess->s_id.b.domain; 1479 be_sid[1] = sess->s_id.b.area; 1480 be_sid[2] = sess->s_id.b.al_pa; 1481 1482 tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess, 1483 sess, be_sid); 1484 tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess, 1485 sess, sess->loop_id); 1486 } 1487 1488 static void tcm_qla2xxx_free_session(struct qla_tgt_sess *sess) 1489 { 1490 struct qla_tgt *tgt = sess->tgt; 1491 struct qla_hw_data *ha = tgt->ha; 1492 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev); 1493 struct se_session *se_sess; 1494 struct se_node_acl *se_nacl; 1495 struct tcm_qla2xxx_lport *lport; 1496 struct tcm_qla2xxx_nacl *nacl; 1497 1498 BUG_ON(in_interrupt()); 1499 1500 se_sess = sess->se_sess; 1501 if (!se_sess) { 1502 pr_err("struct qla_tgt_sess->se_sess is NULL\n"); 1503 dump_stack(); 1504 return; 1505 } 1506 se_nacl = se_sess->se_node_acl; 1507 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1508 1509 lport = vha->vha_tgt.target_lport_ptr; 1510 if (!lport) { 1511 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1512 dump_stack(); 1513 return; 1514 } 1515 target_wait_for_sess_cmds(se_sess); 1516 1517 transport_deregister_session_configfs(sess->se_sess); 1518 transport_deregister_session(sess->se_sess); 1519 } 1520 1521 /* 1522 * Called via qlt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl() 1523 * to locate struct se_node_acl 1524 */ 1525 static int tcm_qla2xxx_check_initiator_node_acl( 1526 scsi_qla_host_t *vha, 1527 unsigned char *fc_wwpn, 1528 void *qla_tgt_sess, 1529 uint8_t *s_id, 1530 uint16_t loop_id) 1531 { 1532 struct qla_hw_data *ha = vha->hw; 1533 struct tcm_qla2xxx_lport *lport; 1534 struct tcm_qla2xxx_tpg *tpg; 1535 struct tcm_qla2xxx_nacl *nacl; 1536 struct se_portal_group *se_tpg; 1537 struct se_node_acl *se_nacl; 1538 struct se_session *se_sess; 1539 struct qla_tgt_sess *sess = qla_tgt_sess; 1540 unsigned char port_name[36]; 1541 unsigned long flags; 1542 int num_tags = (ha->fw_xcb_count) ? ha->fw_xcb_count : 1543 TCM_QLA2XXX_DEFAULT_TAGS; 1544 1545 lport = vha->vha_tgt.target_lport_ptr; 1546 if (!lport) { 1547 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1548 dump_stack(); 1549 return -EINVAL; 1550 } 1551 /* 1552 * Locate the TPG=1 reference.. 1553 */ 1554 tpg = lport->tpg_1; 1555 if (!tpg) { 1556 pr_err("Unable to lcoate struct tcm_qla2xxx_lport->tpg_1\n"); 1557 return -EINVAL; 1558 } 1559 se_tpg = &tpg->se_tpg; 1560 1561 se_sess = transport_init_session_tags(num_tags, 1562 sizeof(struct qla_tgt_cmd), 1563 TARGET_PROT_NORMAL); 1564 if (IS_ERR(se_sess)) { 1565 pr_err("Unable to initialize struct se_session\n"); 1566 return PTR_ERR(se_sess); 1567 } 1568 /* 1569 * Format the FCP Initiator port_name into colon seperated values to 1570 * match the format by tcm_qla2xxx explict ConfigFS NodeACLs. 1571 */ 1572 memset(&port_name, 0, 36); 1573 snprintf(port_name, sizeof(port_name), "%8phC", fc_wwpn); 1574 /* 1575 * Locate our struct se_node_acl either from an explict NodeACL created 1576 * via ConfigFS, or via running in TPG demo mode. 1577 */ 1578 se_sess->se_node_acl = core_tpg_check_initiator_node_acl(se_tpg, 1579 port_name); 1580 if (!se_sess->se_node_acl) { 1581 transport_free_session(se_sess); 1582 return -EINVAL; 1583 } 1584 se_nacl = se_sess->se_node_acl; 1585 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1586 /* 1587 * And now setup the new se_nacl and session pointers into our HW lport 1588 * mappings for fabric S_ID and LOOP_ID. 1589 */ 1590 spin_lock_irqsave(&ha->hardware_lock, flags); 1591 tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl, se_sess, 1592 qla_tgt_sess, s_id); 1593 tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl, se_sess, 1594 qla_tgt_sess, loop_id); 1595 spin_unlock_irqrestore(&ha->hardware_lock, flags); 1596 /* 1597 * Finally register the new FC Nexus with TCM 1598 */ 1599 transport_register_session(se_nacl->se_tpg, se_nacl, se_sess, sess); 1600 1601 return 0; 1602 } 1603 1604 static void tcm_qla2xxx_update_sess(struct qla_tgt_sess *sess, port_id_t s_id, 1605 uint16_t loop_id, bool conf_compl_supported) 1606 { 1607 struct qla_tgt *tgt = sess->tgt; 1608 struct qla_hw_data *ha = tgt->ha; 1609 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev); 1610 struct tcm_qla2xxx_lport *lport = vha->vha_tgt.target_lport_ptr; 1611 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl; 1612 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl, 1613 struct tcm_qla2xxx_nacl, se_node_acl); 1614 u32 key; 1615 1616 1617 if (sess->loop_id != loop_id || sess->s_id.b24 != s_id.b24) 1618 pr_info("Updating session %p from port %8phC loop_id %d -> %d s_id %x:%x:%x -> %x:%x:%x\n", 1619 sess, sess->port_name, 1620 sess->loop_id, loop_id, sess->s_id.b.domain, 1621 sess->s_id.b.area, sess->s_id.b.al_pa, s_id.b.domain, 1622 s_id.b.area, s_id.b.al_pa); 1623 1624 if (sess->loop_id != loop_id) { 1625 /* 1626 * Because we can shuffle loop IDs around and we 1627 * update different sessions non-atomically, we might 1628 * have overwritten this session's old loop ID 1629 * already, and we might end up overwriting some other 1630 * session that will be updated later. So we have to 1631 * be extra careful and we can't warn about those things... 1632 */ 1633 if (lport->lport_loopid_map[sess->loop_id].se_nacl == se_nacl) 1634 lport->lport_loopid_map[sess->loop_id].se_nacl = NULL; 1635 1636 lport->lport_loopid_map[loop_id].se_nacl = se_nacl; 1637 1638 sess->loop_id = loop_id; 1639 } 1640 1641 if (sess->s_id.b24 != s_id.b24) { 1642 key = (((u32) sess->s_id.b.domain << 16) | 1643 ((u32) sess->s_id.b.area << 8) | 1644 ((u32) sess->s_id.b.al_pa)); 1645 1646 if (btree_lookup32(&lport->lport_fcport_map, key)) 1647 WARN(btree_remove32(&lport->lport_fcport_map, key) != se_nacl, 1648 "Found wrong se_nacl when updating s_id %x:%x:%x\n", 1649 sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa); 1650 else 1651 WARN(1, "No lport_fcport_map entry for s_id %x:%x:%x\n", 1652 sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa); 1653 1654 key = (((u32) s_id.b.domain << 16) | 1655 ((u32) s_id.b.area << 8) | 1656 ((u32) s_id.b.al_pa)); 1657 1658 if (btree_lookup32(&lport->lport_fcport_map, key)) { 1659 WARN(1, "Already have lport_fcport_map entry for s_id %x:%x:%x\n", 1660 s_id.b.domain, s_id.b.area, s_id.b.al_pa); 1661 btree_update32(&lport->lport_fcport_map, key, se_nacl); 1662 } else { 1663 btree_insert32(&lport->lport_fcport_map, key, se_nacl, GFP_ATOMIC); 1664 } 1665 1666 sess->s_id = s_id; 1667 nacl->nport_id = key; 1668 } 1669 1670 sess->conf_compl_supported = conf_compl_supported; 1671 } 1672 1673 /* 1674 * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path. 1675 */ 1676 static struct qla_tgt_func_tmpl tcm_qla2xxx_template = { 1677 .handle_cmd = tcm_qla2xxx_handle_cmd, 1678 .handle_data = tcm_qla2xxx_handle_data, 1679 .handle_dif_err = tcm_qla2xxx_handle_dif_err, 1680 .handle_tmr = tcm_qla2xxx_handle_tmr, 1681 .free_cmd = tcm_qla2xxx_free_cmd, 1682 .free_mcmd = tcm_qla2xxx_free_mcmd, 1683 .free_session = tcm_qla2xxx_free_session, 1684 .update_sess = tcm_qla2xxx_update_sess, 1685 .check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl, 1686 .find_sess_by_s_id = tcm_qla2xxx_find_sess_by_s_id, 1687 .find_sess_by_loop_id = tcm_qla2xxx_find_sess_by_loop_id, 1688 .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map, 1689 .put_sess = tcm_qla2xxx_put_sess, 1690 .shutdown_sess = tcm_qla2xxx_shutdown_sess, 1691 }; 1692 1693 static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport) 1694 { 1695 int rc; 1696 1697 rc = btree_init32(&lport->lport_fcport_map); 1698 if (rc) { 1699 pr_err("Unable to initialize lport->lport_fcport_map btree\n"); 1700 return rc; 1701 } 1702 1703 lport->lport_loopid_map = vmalloc(sizeof(struct tcm_qla2xxx_fc_loopid) * 1704 65536); 1705 if (!lport->lport_loopid_map) { 1706 pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n", 1707 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536); 1708 btree_destroy32(&lport->lport_fcport_map); 1709 return -ENOMEM; 1710 } 1711 memset(lport->lport_loopid_map, 0, sizeof(struct tcm_qla2xxx_fc_loopid) 1712 * 65536); 1713 pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n", 1714 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536); 1715 return 0; 1716 } 1717 1718 static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha, 1719 void *target_lport_ptr, 1720 u64 npiv_wwpn, u64 npiv_wwnn) 1721 { 1722 struct qla_hw_data *ha = vha->hw; 1723 struct tcm_qla2xxx_lport *lport = 1724 (struct tcm_qla2xxx_lport *)target_lport_ptr; 1725 /* 1726 * Setup tgt_ops, local pointer to vha and target_lport_ptr 1727 */ 1728 ha->tgt.tgt_ops = &tcm_qla2xxx_template; 1729 vha->vha_tgt.target_lport_ptr = target_lport_ptr; 1730 lport->qla_vha = vha; 1731 1732 return 0; 1733 } 1734 1735 static struct se_wwn *tcm_qla2xxx_make_lport( 1736 struct target_fabric_configfs *tf, 1737 struct config_group *group, 1738 const char *name) 1739 { 1740 struct tcm_qla2xxx_lport *lport; 1741 u64 wwpn; 1742 int ret = -ENODEV; 1743 1744 if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0) 1745 return ERR_PTR(-EINVAL); 1746 1747 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL); 1748 if (!lport) { 1749 pr_err("Unable to allocate struct tcm_qla2xxx_lport\n"); 1750 return ERR_PTR(-ENOMEM); 1751 } 1752 lport->lport_wwpn = wwpn; 1753 tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN, 1754 wwpn); 1755 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) wwpn); 1756 1757 ret = tcm_qla2xxx_init_lport(lport); 1758 if (ret != 0) 1759 goto out; 1760 1761 ret = qlt_lport_register(lport, wwpn, 0, 0, 1762 tcm_qla2xxx_lport_register_cb); 1763 if (ret != 0) 1764 goto out_lport; 1765 1766 return &lport->lport_wwn; 1767 out_lport: 1768 vfree(lport->lport_loopid_map); 1769 btree_destroy32(&lport->lport_fcport_map); 1770 out: 1771 kfree(lport); 1772 return ERR_PTR(ret); 1773 } 1774 1775 static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn) 1776 { 1777 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1778 struct tcm_qla2xxx_lport, lport_wwn); 1779 struct scsi_qla_host *vha = lport->qla_vha; 1780 struct se_node_acl *node; 1781 u32 key = 0; 1782 1783 /* 1784 * Call into qla2x_target.c LLD logic to complete the 1785 * shutdown of struct qla_tgt after the call to 1786 * qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above.. 1787 */ 1788 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stopped) 1789 qlt_stop_phase2(vha->vha_tgt.qla_tgt); 1790 1791 qlt_lport_deregister(vha); 1792 1793 vfree(lport->lport_loopid_map); 1794 btree_for_each_safe32(&lport->lport_fcport_map, key, node) 1795 btree_remove32(&lport->lport_fcport_map, key); 1796 btree_destroy32(&lport->lport_fcport_map); 1797 kfree(lport); 1798 } 1799 1800 static int tcm_qla2xxx_lport_register_npiv_cb(struct scsi_qla_host *base_vha, 1801 void *target_lport_ptr, 1802 u64 npiv_wwpn, u64 npiv_wwnn) 1803 { 1804 struct fc_vport *vport; 1805 struct Scsi_Host *sh = base_vha->host; 1806 struct scsi_qla_host *npiv_vha; 1807 struct tcm_qla2xxx_lport *lport = 1808 (struct tcm_qla2xxx_lport *)target_lport_ptr; 1809 struct tcm_qla2xxx_lport *base_lport = 1810 (struct tcm_qla2xxx_lport *)base_vha->vha_tgt.target_lport_ptr; 1811 struct tcm_qla2xxx_tpg *base_tpg; 1812 struct fc_vport_identifiers vport_id; 1813 1814 if (!qla_tgt_mode_enabled(base_vha)) { 1815 pr_err("qla2xxx base_vha not enabled for target mode\n"); 1816 return -EPERM; 1817 } 1818 1819 if (!base_lport || !base_lport->tpg_1 || 1820 !atomic_read(&base_lport->tpg_1->lport_tpg_enabled)) { 1821 pr_err("qla2xxx base_lport or tpg_1 not available\n"); 1822 return -EPERM; 1823 } 1824 base_tpg = base_lport->tpg_1; 1825 1826 memset(&vport_id, 0, sizeof(vport_id)); 1827 vport_id.port_name = npiv_wwpn; 1828 vport_id.node_name = npiv_wwnn; 1829 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR; 1830 vport_id.vport_type = FC_PORTTYPE_NPIV; 1831 vport_id.disable = false; 1832 1833 vport = fc_vport_create(sh, 0, &vport_id); 1834 if (!vport) { 1835 pr_err("fc_vport_create failed for qla2xxx_npiv\n"); 1836 return -ENODEV; 1837 } 1838 /* 1839 * Setup local pointer to NPIV vhba + target_lport_ptr 1840 */ 1841 npiv_vha = (struct scsi_qla_host *)vport->dd_data; 1842 npiv_vha->vha_tgt.target_lport_ptr = target_lport_ptr; 1843 lport->qla_vha = npiv_vha; 1844 scsi_host_get(npiv_vha->host); 1845 return 0; 1846 } 1847 1848 1849 static struct se_wwn *tcm_qla2xxx_npiv_make_lport( 1850 struct target_fabric_configfs *tf, 1851 struct config_group *group, 1852 const char *name) 1853 { 1854 struct tcm_qla2xxx_lport *lport; 1855 u64 phys_wwpn, npiv_wwpn, npiv_wwnn; 1856 char *p, tmp[128]; 1857 int ret; 1858 1859 snprintf(tmp, 128, "%s", name); 1860 1861 p = strchr(tmp, '@'); 1862 if (!p) { 1863 pr_err("Unable to locate NPIV '@' seperator\n"); 1864 return ERR_PTR(-EINVAL); 1865 } 1866 *p++ = '\0'; 1867 1868 if (tcm_qla2xxx_parse_wwn(tmp, &phys_wwpn, 1) < 0) 1869 return ERR_PTR(-EINVAL); 1870 1871 if (tcm_qla2xxx_npiv_parse_wwn(p, strlen(p)+1, 1872 &npiv_wwpn, &npiv_wwnn) < 0) 1873 return ERR_PTR(-EINVAL); 1874 1875 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL); 1876 if (!lport) { 1877 pr_err("Unable to allocate struct tcm_qla2xxx_lport for NPIV\n"); 1878 return ERR_PTR(-ENOMEM); 1879 } 1880 lport->lport_npiv_wwpn = npiv_wwpn; 1881 lport->lport_npiv_wwnn = npiv_wwnn; 1882 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) npiv_wwpn); 1883 1884 ret = tcm_qla2xxx_init_lport(lport); 1885 if (ret != 0) 1886 goto out; 1887 1888 ret = qlt_lport_register(lport, phys_wwpn, npiv_wwpn, npiv_wwnn, 1889 tcm_qla2xxx_lport_register_npiv_cb); 1890 if (ret != 0) 1891 goto out_lport; 1892 1893 return &lport->lport_wwn; 1894 out_lport: 1895 vfree(lport->lport_loopid_map); 1896 btree_destroy32(&lport->lport_fcport_map); 1897 out: 1898 kfree(lport); 1899 return ERR_PTR(ret); 1900 } 1901 1902 static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn) 1903 { 1904 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1905 struct tcm_qla2xxx_lport, lport_wwn); 1906 struct scsi_qla_host *npiv_vha = lport->qla_vha; 1907 struct qla_hw_data *ha = npiv_vha->hw; 1908 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 1909 1910 scsi_host_put(npiv_vha->host); 1911 /* 1912 * Notify libfc that we want to release the vha->fc_vport 1913 */ 1914 fc_vport_terminate(npiv_vha->fc_vport); 1915 scsi_host_put(base_vha->host); 1916 kfree(lport); 1917 } 1918 1919 1920 static ssize_t tcm_qla2xxx_wwn_show_attr_version( 1921 struct target_fabric_configfs *tf, 1922 char *page) 1923 { 1924 return sprintf(page, 1925 "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s on " 1926 UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname, 1927 utsname()->machine); 1928 } 1929 1930 TF_WWN_ATTR_RO(tcm_qla2xxx, version); 1931 1932 static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = { 1933 &tcm_qla2xxx_wwn_version.attr, 1934 NULL, 1935 }; 1936 1937 static struct target_core_fabric_ops tcm_qla2xxx_ops = { 1938 .get_fabric_name = tcm_qla2xxx_get_fabric_name, 1939 .get_fabric_proto_ident = tcm_qla2xxx_get_fabric_proto_ident, 1940 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn, 1941 .tpg_get_tag = tcm_qla2xxx_get_tag, 1942 .tpg_get_default_depth = tcm_qla2xxx_get_default_depth, 1943 .tpg_get_pr_transport_id = tcm_qla2xxx_get_pr_transport_id, 1944 .tpg_get_pr_transport_id_len = tcm_qla2xxx_get_pr_transport_id_len, 1945 .tpg_parse_pr_out_transport_id = tcm_qla2xxx_parse_pr_out_transport_id, 1946 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode, 1947 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache, 1948 .tpg_check_demo_mode_write_protect = 1949 tcm_qla2xxx_check_demo_write_protect, 1950 .tpg_check_prod_mode_write_protect = 1951 tcm_qla2xxx_check_prod_write_protect, 1952 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only, 1953 .tpg_alloc_fabric_acl = tcm_qla2xxx_alloc_fabric_acl, 1954 .tpg_release_fabric_acl = tcm_qla2xxx_release_fabric_acl, 1955 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index, 1956 .check_stop_free = tcm_qla2xxx_check_stop_free, 1957 .release_cmd = tcm_qla2xxx_release_cmd, 1958 .put_session = tcm_qla2xxx_put_session, 1959 .shutdown_session = tcm_qla2xxx_shutdown_session, 1960 .close_session = tcm_qla2xxx_close_session, 1961 .sess_get_index = tcm_qla2xxx_sess_get_index, 1962 .sess_get_initiator_sid = NULL, 1963 .write_pending = tcm_qla2xxx_write_pending, 1964 .write_pending_status = tcm_qla2xxx_write_pending_status, 1965 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs, 1966 .get_task_tag = tcm_qla2xxx_get_task_tag, 1967 .get_cmd_state = tcm_qla2xxx_get_cmd_state, 1968 .queue_data_in = tcm_qla2xxx_queue_data_in, 1969 .queue_status = tcm_qla2xxx_queue_status, 1970 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp, 1971 .aborted_task = tcm_qla2xxx_aborted_task, 1972 /* 1973 * Setup function pointers for generic logic in 1974 * target_core_fabric_configfs.c 1975 */ 1976 .fabric_make_wwn = tcm_qla2xxx_make_lport, 1977 .fabric_drop_wwn = tcm_qla2xxx_drop_lport, 1978 .fabric_make_tpg = tcm_qla2xxx_make_tpg, 1979 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg, 1980 .fabric_post_link = NULL, 1981 .fabric_pre_unlink = NULL, 1982 .fabric_make_np = NULL, 1983 .fabric_drop_np = NULL, 1984 .fabric_make_nodeacl = tcm_qla2xxx_make_nodeacl, 1985 .fabric_drop_nodeacl = tcm_qla2xxx_drop_nodeacl, 1986 }; 1987 1988 static struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = { 1989 .get_fabric_name = tcm_qla2xxx_npiv_get_fabric_name, 1990 .get_fabric_proto_ident = tcm_qla2xxx_get_fabric_proto_ident, 1991 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn, 1992 .tpg_get_tag = tcm_qla2xxx_get_tag, 1993 .tpg_get_default_depth = tcm_qla2xxx_get_default_depth, 1994 .tpg_get_pr_transport_id = tcm_qla2xxx_get_pr_transport_id, 1995 .tpg_get_pr_transport_id_len = tcm_qla2xxx_get_pr_transport_id_len, 1996 .tpg_parse_pr_out_transport_id = tcm_qla2xxx_parse_pr_out_transport_id, 1997 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode, 1998 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache, 1999 .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_demo_mode, 2000 .tpg_check_prod_mode_write_protect = 2001 tcm_qla2xxx_check_prod_write_protect, 2002 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only, 2003 .tpg_alloc_fabric_acl = tcm_qla2xxx_alloc_fabric_acl, 2004 .tpg_release_fabric_acl = tcm_qla2xxx_release_fabric_acl, 2005 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index, 2006 .check_stop_free = tcm_qla2xxx_check_stop_free, 2007 .release_cmd = tcm_qla2xxx_release_cmd, 2008 .put_session = tcm_qla2xxx_put_session, 2009 .shutdown_session = tcm_qla2xxx_shutdown_session, 2010 .close_session = tcm_qla2xxx_close_session, 2011 .sess_get_index = tcm_qla2xxx_sess_get_index, 2012 .sess_get_initiator_sid = NULL, 2013 .write_pending = tcm_qla2xxx_write_pending, 2014 .write_pending_status = tcm_qla2xxx_write_pending_status, 2015 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs, 2016 .get_task_tag = tcm_qla2xxx_get_task_tag, 2017 .get_cmd_state = tcm_qla2xxx_get_cmd_state, 2018 .queue_data_in = tcm_qla2xxx_queue_data_in, 2019 .queue_status = tcm_qla2xxx_queue_status, 2020 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp, 2021 .aborted_task = tcm_qla2xxx_aborted_task, 2022 /* 2023 * Setup function pointers for generic logic in 2024 * target_core_fabric_configfs.c 2025 */ 2026 .fabric_make_wwn = tcm_qla2xxx_npiv_make_lport, 2027 .fabric_drop_wwn = tcm_qla2xxx_npiv_drop_lport, 2028 .fabric_make_tpg = tcm_qla2xxx_npiv_make_tpg, 2029 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg, 2030 .fabric_post_link = NULL, 2031 .fabric_pre_unlink = NULL, 2032 .fabric_make_np = NULL, 2033 .fabric_drop_np = NULL, 2034 .fabric_make_nodeacl = tcm_qla2xxx_make_nodeacl, 2035 .fabric_drop_nodeacl = tcm_qla2xxx_drop_nodeacl, 2036 }; 2037 2038 static int tcm_qla2xxx_register_configfs(void) 2039 { 2040 struct target_fabric_configfs *fabric, *npiv_fabric; 2041 int ret; 2042 2043 pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on " 2044 UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname, 2045 utsname()->machine); 2046 /* 2047 * Register the top level struct config_item_type with TCM core 2048 */ 2049 fabric = target_fabric_configfs_init(THIS_MODULE, "qla2xxx"); 2050 if (IS_ERR(fabric)) { 2051 pr_err("target_fabric_configfs_init() failed\n"); 2052 return PTR_ERR(fabric); 2053 } 2054 /* 2055 * Setup fabric->tf_ops from our local tcm_qla2xxx_ops 2056 */ 2057 fabric->tf_ops = tcm_qla2xxx_ops; 2058 /* 2059 * Setup default attribute lists for various fabric->tf_cit_tmpl 2060 */ 2061 fabric->tf_cit_tmpl.tfc_wwn_cit.ct_attrs = tcm_qla2xxx_wwn_attrs; 2062 fabric->tf_cit_tmpl.tfc_tpg_base_cit.ct_attrs = tcm_qla2xxx_tpg_attrs; 2063 fabric->tf_cit_tmpl.tfc_tpg_attrib_cit.ct_attrs = 2064 tcm_qla2xxx_tpg_attrib_attrs; 2065 fabric->tf_cit_tmpl.tfc_tpg_param_cit.ct_attrs = NULL; 2066 fabric->tf_cit_tmpl.tfc_tpg_np_base_cit.ct_attrs = NULL; 2067 fabric->tf_cit_tmpl.tfc_tpg_nacl_base_cit.ct_attrs = NULL; 2068 fabric->tf_cit_tmpl.tfc_tpg_nacl_attrib_cit.ct_attrs = NULL; 2069 fabric->tf_cit_tmpl.tfc_tpg_nacl_auth_cit.ct_attrs = NULL; 2070 fabric->tf_cit_tmpl.tfc_tpg_nacl_param_cit.ct_attrs = NULL; 2071 /* 2072 * Register the fabric for use within TCM 2073 */ 2074 ret = target_fabric_configfs_register(fabric); 2075 if (ret < 0) { 2076 pr_err("target_fabric_configfs_register() failed for TCM_QLA2XXX\n"); 2077 return ret; 2078 } 2079 /* 2080 * Setup our local pointer to *fabric 2081 */ 2082 tcm_qla2xxx_fabric_configfs = fabric; 2083 pr_debug("TCM_QLA2XXX[0] - Set fabric -> tcm_qla2xxx_fabric_configfs\n"); 2084 2085 /* 2086 * Register the top level struct config_item_type for NPIV with TCM core 2087 */ 2088 npiv_fabric = target_fabric_configfs_init(THIS_MODULE, "qla2xxx_npiv"); 2089 if (IS_ERR(npiv_fabric)) { 2090 pr_err("target_fabric_configfs_init() failed\n"); 2091 ret = PTR_ERR(npiv_fabric); 2092 goto out_fabric; 2093 } 2094 /* 2095 * Setup fabric->tf_ops from our local tcm_qla2xxx_npiv_ops 2096 */ 2097 npiv_fabric->tf_ops = tcm_qla2xxx_npiv_ops; 2098 /* 2099 * Setup default attribute lists for various npiv_fabric->tf_cit_tmpl 2100 */ 2101 npiv_fabric->tf_cit_tmpl.tfc_wwn_cit.ct_attrs = tcm_qla2xxx_wwn_attrs; 2102 npiv_fabric->tf_cit_tmpl.tfc_tpg_base_cit.ct_attrs = 2103 tcm_qla2xxx_npiv_tpg_attrs; 2104 npiv_fabric->tf_cit_tmpl.tfc_tpg_attrib_cit.ct_attrs = NULL; 2105 npiv_fabric->tf_cit_tmpl.tfc_tpg_param_cit.ct_attrs = NULL; 2106 npiv_fabric->tf_cit_tmpl.tfc_tpg_np_base_cit.ct_attrs = NULL; 2107 npiv_fabric->tf_cit_tmpl.tfc_tpg_nacl_base_cit.ct_attrs = NULL; 2108 npiv_fabric->tf_cit_tmpl.tfc_tpg_nacl_attrib_cit.ct_attrs = NULL; 2109 npiv_fabric->tf_cit_tmpl.tfc_tpg_nacl_auth_cit.ct_attrs = NULL; 2110 npiv_fabric->tf_cit_tmpl.tfc_tpg_nacl_param_cit.ct_attrs = NULL; 2111 /* 2112 * Register the npiv_fabric for use within TCM 2113 */ 2114 ret = target_fabric_configfs_register(npiv_fabric); 2115 if (ret < 0) { 2116 pr_err("target_fabric_configfs_register() failed for TCM_QLA2XXX\n"); 2117 goto out_fabric; 2118 } 2119 /* 2120 * Setup our local pointer to *npiv_fabric 2121 */ 2122 tcm_qla2xxx_npiv_fabric_configfs = npiv_fabric; 2123 pr_debug("TCM_QLA2XXX[0] - Set fabric -> tcm_qla2xxx_npiv_fabric_configfs\n"); 2124 2125 tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free", 2126 WQ_MEM_RECLAIM, 0); 2127 if (!tcm_qla2xxx_free_wq) { 2128 ret = -ENOMEM; 2129 goto out_fabric_npiv; 2130 } 2131 2132 tcm_qla2xxx_cmd_wq = alloc_workqueue("tcm_qla2xxx_cmd", 0, 0); 2133 if (!tcm_qla2xxx_cmd_wq) { 2134 ret = -ENOMEM; 2135 goto out_free_wq; 2136 } 2137 2138 return 0; 2139 2140 out_free_wq: 2141 destroy_workqueue(tcm_qla2xxx_free_wq); 2142 out_fabric_npiv: 2143 target_fabric_configfs_deregister(tcm_qla2xxx_npiv_fabric_configfs); 2144 out_fabric: 2145 target_fabric_configfs_deregister(tcm_qla2xxx_fabric_configfs); 2146 return ret; 2147 } 2148 2149 static void tcm_qla2xxx_deregister_configfs(void) 2150 { 2151 destroy_workqueue(tcm_qla2xxx_cmd_wq); 2152 destroy_workqueue(tcm_qla2xxx_free_wq); 2153 2154 target_fabric_configfs_deregister(tcm_qla2xxx_fabric_configfs); 2155 tcm_qla2xxx_fabric_configfs = NULL; 2156 pr_debug("TCM_QLA2XXX[0] - Cleared tcm_qla2xxx_fabric_configfs\n"); 2157 2158 target_fabric_configfs_deregister(tcm_qla2xxx_npiv_fabric_configfs); 2159 tcm_qla2xxx_npiv_fabric_configfs = NULL; 2160 pr_debug("TCM_QLA2XXX[0] - Cleared tcm_qla2xxx_npiv_fabric_configfs\n"); 2161 } 2162 2163 static int __init tcm_qla2xxx_init(void) 2164 { 2165 int ret; 2166 2167 ret = tcm_qla2xxx_register_configfs(); 2168 if (ret < 0) 2169 return ret; 2170 2171 return 0; 2172 } 2173 2174 static void __exit tcm_qla2xxx_exit(void) 2175 { 2176 tcm_qla2xxx_deregister_configfs(); 2177 } 2178 2179 MODULE_DESCRIPTION("TCM QLA2XXX series NPIV enabled fabric driver"); 2180 MODULE_LICENSE("GPL"); 2181 module_init(tcm_qla2xxx_init); 2182 module_exit(tcm_qla2xxx_exit); 2183