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 WARN_ON(node && (node != se_nacl)); 790 791 pr_debug("Removed from fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%06x\n", 792 se_nacl, nacl->nport_wwnn, nacl->nport_id); 793 /* 794 * Now clear the se_nacl and session pointers from our HW lport lookup 795 * table mapping for this initiator's fabric S_ID and LOOP_ID entries. 796 * 797 * This is done ahead of callbacks into tcm_qla2xxx_free_session() -> 798 * target_wait_for_sess_cmds() before the session waits for outstanding 799 * I/O to complete, to avoid a race between session shutdown execution 800 * and incoming ATIOs or TMRs picking up a stale se_node_act reference. 801 */ 802 tcm_qla2xxx_clear_sess_lookup(lport, nacl, sess); 803 } 804 805 static void tcm_qla2xxx_release_session(struct kref *kref) 806 { 807 struct se_session *se_sess = container_of(kref, 808 struct se_session, sess_kref); 809 810 qlt_unreg_sess(se_sess->fabric_sess_ptr); 811 } 812 813 static void tcm_qla2xxx_put_session(struct se_session *se_sess) 814 { 815 struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr; 816 struct qla_hw_data *ha = sess->vha->hw; 817 unsigned long flags; 818 819 spin_lock_irqsave(&ha->hardware_lock, flags); 820 kref_put(&se_sess->sess_kref, tcm_qla2xxx_release_session); 821 spin_unlock_irqrestore(&ha->hardware_lock, flags); 822 } 823 824 static void tcm_qla2xxx_put_sess(struct qla_tgt_sess *sess) 825 { 826 if (!sess) 827 return; 828 829 assert_spin_locked(&sess->vha->hw->hardware_lock); 830 kref_put(&sess->se_sess->sess_kref, tcm_qla2xxx_release_session); 831 } 832 833 static void tcm_qla2xxx_shutdown_sess(struct qla_tgt_sess *sess) 834 { 835 assert_spin_locked(&sess->vha->hw->hardware_lock); 836 target_sess_cmd_list_set_waiting(sess->se_sess); 837 } 838 839 static struct se_node_acl *tcm_qla2xxx_make_nodeacl( 840 struct se_portal_group *se_tpg, 841 struct config_group *group, 842 const char *name) 843 { 844 struct se_node_acl *se_nacl, *se_nacl_new; 845 struct tcm_qla2xxx_nacl *nacl; 846 u64 wwnn; 847 u32 qla2xxx_nexus_depth; 848 849 if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0) 850 return ERR_PTR(-EINVAL); 851 852 se_nacl_new = tcm_qla2xxx_alloc_fabric_acl(se_tpg); 853 if (!se_nacl_new) 854 return ERR_PTR(-ENOMEM); 855 /* #warning FIXME: Hardcoded qla2xxx_nexus depth in tcm_qla2xxx_make_nodeacl */ 856 qla2xxx_nexus_depth = 1; 857 858 /* 859 * se_nacl_new may be released by core_tpg_add_initiator_node_acl() 860 * when converting a NodeACL from demo mode -> explict 861 */ 862 se_nacl = core_tpg_add_initiator_node_acl(se_tpg, se_nacl_new, 863 name, qla2xxx_nexus_depth); 864 if (IS_ERR(se_nacl)) { 865 tcm_qla2xxx_release_fabric_acl(se_tpg, se_nacl_new); 866 return se_nacl; 867 } 868 /* 869 * Locate our struct tcm_qla2xxx_nacl and set the FC Nport WWPN 870 */ 871 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 872 nacl->nport_wwnn = wwnn; 873 tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn); 874 875 return se_nacl; 876 } 877 878 static void tcm_qla2xxx_drop_nodeacl(struct se_node_acl *se_acl) 879 { 880 struct se_portal_group *se_tpg = se_acl->se_tpg; 881 struct tcm_qla2xxx_nacl *nacl = container_of(se_acl, 882 struct tcm_qla2xxx_nacl, se_node_acl); 883 884 core_tpg_del_initiator_node_acl(se_tpg, se_acl, 1); 885 kfree(nacl); 886 } 887 888 /* Start items for tcm_qla2xxx_tpg_attrib_cit */ 889 890 #define DEF_QLA_TPG_ATTRIB(name) \ 891 \ 892 static ssize_t tcm_qla2xxx_tpg_attrib_show_##name( \ 893 struct se_portal_group *se_tpg, \ 894 char *page) \ 895 { \ 896 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \ 897 struct tcm_qla2xxx_tpg, se_tpg); \ 898 \ 899 return sprintf(page, "%u\n", tpg->tpg_attrib.name); \ 900 } \ 901 \ 902 static ssize_t tcm_qla2xxx_tpg_attrib_store_##name( \ 903 struct se_portal_group *se_tpg, \ 904 const char *page, \ 905 size_t count) \ 906 { \ 907 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \ 908 struct tcm_qla2xxx_tpg, se_tpg); \ 909 unsigned long val; \ 910 int ret; \ 911 \ 912 ret = kstrtoul(page, 0, &val); \ 913 if (ret < 0) { \ 914 pr_err("kstrtoul() failed with" \ 915 " ret: %d\n", ret); \ 916 return -EINVAL; \ 917 } \ 918 ret = tcm_qla2xxx_set_attrib_##name(tpg, val); \ 919 \ 920 return (!ret) ? count : -EINVAL; \ 921 } 922 923 #define DEF_QLA_TPG_ATTR_BOOL(_name) \ 924 \ 925 static int tcm_qla2xxx_set_attrib_##_name( \ 926 struct tcm_qla2xxx_tpg *tpg, \ 927 unsigned long val) \ 928 { \ 929 struct tcm_qla2xxx_tpg_attrib *a = &tpg->tpg_attrib; \ 930 \ 931 if ((val != 0) && (val != 1)) { \ 932 pr_err("Illegal boolean value %lu\n", val); \ 933 return -EINVAL; \ 934 } \ 935 \ 936 a->_name = val; \ 937 return 0; \ 938 } 939 940 #define QLA_TPG_ATTR(_name, _mode) \ 941 TF_TPG_ATTRIB_ATTR(tcm_qla2xxx, _name, _mode); 942 943 /* 944 * Define tcm_qla2xxx_tpg_attrib_s_generate_node_acls 945 */ 946 DEF_QLA_TPG_ATTR_BOOL(generate_node_acls); 947 DEF_QLA_TPG_ATTRIB(generate_node_acls); 948 QLA_TPG_ATTR(generate_node_acls, S_IRUGO | S_IWUSR); 949 950 /* 951 Define tcm_qla2xxx_attrib_s_cache_dynamic_acls 952 */ 953 DEF_QLA_TPG_ATTR_BOOL(cache_dynamic_acls); 954 DEF_QLA_TPG_ATTRIB(cache_dynamic_acls); 955 QLA_TPG_ATTR(cache_dynamic_acls, S_IRUGO | S_IWUSR); 956 957 /* 958 * Define tcm_qla2xxx_tpg_attrib_s_demo_mode_write_protect 959 */ 960 DEF_QLA_TPG_ATTR_BOOL(demo_mode_write_protect); 961 DEF_QLA_TPG_ATTRIB(demo_mode_write_protect); 962 QLA_TPG_ATTR(demo_mode_write_protect, S_IRUGO | S_IWUSR); 963 964 /* 965 * Define tcm_qla2xxx_tpg_attrib_s_prod_mode_write_protect 966 */ 967 DEF_QLA_TPG_ATTR_BOOL(prod_mode_write_protect); 968 DEF_QLA_TPG_ATTRIB(prod_mode_write_protect); 969 QLA_TPG_ATTR(prod_mode_write_protect, S_IRUGO | S_IWUSR); 970 971 /* 972 * Define tcm_qla2xxx_tpg_attrib_s_demo_mode_login_only 973 */ 974 DEF_QLA_TPG_ATTR_BOOL(demo_mode_login_only); 975 DEF_QLA_TPG_ATTRIB(demo_mode_login_only); 976 QLA_TPG_ATTR(demo_mode_login_only, S_IRUGO | S_IWUSR); 977 978 static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = { 979 &tcm_qla2xxx_tpg_attrib_generate_node_acls.attr, 980 &tcm_qla2xxx_tpg_attrib_cache_dynamic_acls.attr, 981 &tcm_qla2xxx_tpg_attrib_demo_mode_write_protect.attr, 982 &tcm_qla2xxx_tpg_attrib_prod_mode_write_protect.attr, 983 &tcm_qla2xxx_tpg_attrib_demo_mode_login_only.attr, 984 NULL, 985 }; 986 987 /* End items for tcm_qla2xxx_tpg_attrib_cit */ 988 989 static ssize_t tcm_qla2xxx_tpg_show_enable( 990 struct se_portal_group *se_tpg, 991 char *page) 992 { 993 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 994 struct tcm_qla2xxx_tpg, se_tpg); 995 996 return snprintf(page, PAGE_SIZE, "%d\n", 997 atomic_read(&tpg->lport_tpg_enabled)); 998 } 999 1000 static void tcm_qla2xxx_depend_tpg(struct work_struct *work) 1001 { 1002 struct tcm_qla2xxx_tpg *base_tpg = container_of(work, 1003 struct tcm_qla2xxx_tpg, tpg_base_work); 1004 struct se_portal_group *se_tpg = &base_tpg->se_tpg; 1005 struct scsi_qla_host *base_vha = base_tpg->lport->qla_vha; 1006 1007 if (!configfs_depend_item(se_tpg->se_tpg_tfo->tf_subsys, 1008 &se_tpg->tpg_group.cg_item)) { 1009 atomic_set(&base_tpg->lport_tpg_enabled, 1); 1010 qlt_enable_vha(base_vha); 1011 } 1012 complete(&base_tpg->tpg_base_comp); 1013 } 1014 1015 static void tcm_qla2xxx_undepend_tpg(struct work_struct *work) 1016 { 1017 struct tcm_qla2xxx_tpg *base_tpg = container_of(work, 1018 struct tcm_qla2xxx_tpg, tpg_base_work); 1019 struct se_portal_group *se_tpg = &base_tpg->se_tpg; 1020 struct scsi_qla_host *base_vha = base_tpg->lport->qla_vha; 1021 1022 if (!qlt_stop_phase1(base_vha->vha_tgt.qla_tgt)) { 1023 atomic_set(&base_tpg->lport_tpg_enabled, 0); 1024 configfs_undepend_item(se_tpg->se_tpg_tfo->tf_subsys, 1025 &se_tpg->tpg_group.cg_item); 1026 } 1027 complete(&base_tpg->tpg_base_comp); 1028 } 1029 1030 static ssize_t tcm_qla2xxx_tpg_store_enable( 1031 struct se_portal_group *se_tpg, 1032 const char *page, 1033 size_t count) 1034 { 1035 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1036 struct tcm_qla2xxx_tpg, se_tpg); 1037 unsigned long op; 1038 int rc; 1039 1040 rc = kstrtoul(page, 0, &op); 1041 if (rc < 0) { 1042 pr_err("kstrtoul() returned %d\n", rc); 1043 return -EINVAL; 1044 } 1045 if ((op != 1) && (op != 0)) { 1046 pr_err("Illegal value for tpg_enable: %lu\n", op); 1047 return -EINVAL; 1048 } 1049 if (op) { 1050 if (atomic_read(&tpg->lport_tpg_enabled)) 1051 return -EEXIST; 1052 1053 INIT_WORK(&tpg->tpg_base_work, tcm_qla2xxx_depend_tpg); 1054 } else { 1055 if (!atomic_read(&tpg->lport_tpg_enabled)) 1056 return count; 1057 1058 INIT_WORK(&tpg->tpg_base_work, tcm_qla2xxx_undepend_tpg); 1059 } 1060 init_completion(&tpg->tpg_base_comp); 1061 schedule_work(&tpg->tpg_base_work); 1062 wait_for_completion(&tpg->tpg_base_comp); 1063 1064 if (op) { 1065 if (!atomic_read(&tpg->lport_tpg_enabled)) 1066 return -ENODEV; 1067 } else { 1068 if (atomic_read(&tpg->lport_tpg_enabled)) 1069 return -EPERM; 1070 } 1071 return count; 1072 } 1073 1074 TF_TPG_BASE_ATTR(tcm_qla2xxx, enable, S_IRUGO | S_IWUSR); 1075 1076 static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = { 1077 &tcm_qla2xxx_tpg_enable.attr, 1078 NULL, 1079 }; 1080 1081 static struct se_portal_group *tcm_qla2xxx_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 if ((tpgt != 1)) { 1098 pr_err("In non NPIV mode, a single TPG=1 is used for HW port mappings\n"); 1099 return ERR_PTR(-ENOSYS); 1100 } 1101 1102 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL); 1103 if (!tpg) { 1104 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n"); 1105 return ERR_PTR(-ENOMEM); 1106 } 1107 tpg->lport = lport; 1108 tpg->lport_tpgt = tpgt; 1109 /* 1110 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic 1111 * NodeACLs 1112 */ 1113 tpg->tpg_attrib.generate_node_acls = 1; 1114 tpg->tpg_attrib.demo_mode_write_protect = 1; 1115 tpg->tpg_attrib.cache_dynamic_acls = 1; 1116 tpg->tpg_attrib.demo_mode_login_only = 1; 1117 1118 ret = core_tpg_register(&tcm_qla2xxx_fabric_configfs->tf_ops, wwn, 1119 &tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL); 1120 if (ret < 0) { 1121 kfree(tpg); 1122 return NULL; 1123 } 1124 1125 lport->tpg_1 = tpg; 1126 1127 return &tpg->se_tpg; 1128 } 1129 1130 static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg) 1131 { 1132 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1133 struct tcm_qla2xxx_tpg, se_tpg); 1134 struct tcm_qla2xxx_lport *lport = tpg->lport; 1135 struct scsi_qla_host *vha = lport->qla_vha; 1136 /* 1137 * Call into qla2x_target.c LLD logic to shutdown the active 1138 * FC Nexuses and disable target mode operation for this qla_hw_data 1139 */ 1140 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stop) 1141 qlt_stop_phase1(vha->vha_tgt.qla_tgt); 1142 1143 core_tpg_deregister(se_tpg); 1144 /* 1145 * Clear local TPG=1 pointer for non NPIV mode. 1146 */ 1147 lport->tpg_1 = NULL; 1148 kfree(tpg); 1149 } 1150 1151 static ssize_t tcm_qla2xxx_npiv_tpg_show_enable( 1152 struct se_portal_group *se_tpg, 1153 char *page) 1154 { 1155 return tcm_qla2xxx_tpg_show_enable(se_tpg, page); 1156 } 1157 1158 static ssize_t tcm_qla2xxx_npiv_tpg_store_enable( 1159 struct se_portal_group *se_tpg, 1160 const char *page, 1161 size_t count) 1162 { 1163 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn; 1164 struct tcm_qla2xxx_lport *lport = container_of(se_wwn, 1165 struct tcm_qla2xxx_lport, lport_wwn); 1166 struct scsi_qla_host *vha = lport->qla_vha; 1167 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1168 struct tcm_qla2xxx_tpg, se_tpg); 1169 unsigned long op; 1170 int rc; 1171 1172 rc = kstrtoul(page, 0, &op); 1173 if (rc < 0) { 1174 pr_err("kstrtoul() returned %d\n", rc); 1175 return -EINVAL; 1176 } 1177 if ((op != 1) && (op != 0)) { 1178 pr_err("Illegal value for tpg_enable: %lu\n", op); 1179 return -EINVAL; 1180 } 1181 if (op) { 1182 if (atomic_read(&tpg->lport_tpg_enabled)) 1183 return -EEXIST; 1184 1185 atomic_set(&tpg->lport_tpg_enabled, 1); 1186 qlt_enable_vha(vha); 1187 } else { 1188 if (!atomic_read(&tpg->lport_tpg_enabled)) 1189 return count; 1190 1191 atomic_set(&tpg->lport_tpg_enabled, 0); 1192 qlt_stop_phase1(vha->vha_tgt.qla_tgt); 1193 } 1194 1195 return count; 1196 } 1197 1198 TF_TPG_BASE_ATTR(tcm_qla2xxx_npiv, enable, S_IRUGO | S_IWUSR); 1199 1200 static struct configfs_attribute *tcm_qla2xxx_npiv_tpg_attrs[] = { 1201 &tcm_qla2xxx_npiv_tpg_enable.attr, 1202 NULL, 1203 }; 1204 1205 static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg( 1206 struct se_wwn *wwn, 1207 struct config_group *group, 1208 const char *name) 1209 { 1210 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1211 struct tcm_qla2xxx_lport, lport_wwn); 1212 struct tcm_qla2xxx_tpg *tpg; 1213 unsigned long tpgt; 1214 int ret; 1215 1216 if (strstr(name, "tpgt_") != name) 1217 return ERR_PTR(-EINVAL); 1218 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX) 1219 return ERR_PTR(-EINVAL); 1220 1221 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL); 1222 if (!tpg) { 1223 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n"); 1224 return ERR_PTR(-ENOMEM); 1225 } 1226 tpg->lport = lport; 1227 tpg->lport_tpgt = tpgt; 1228 1229 /* 1230 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic 1231 * NodeACLs 1232 */ 1233 tpg->tpg_attrib.generate_node_acls = 1; 1234 tpg->tpg_attrib.demo_mode_write_protect = 1; 1235 tpg->tpg_attrib.cache_dynamic_acls = 1; 1236 tpg->tpg_attrib.demo_mode_login_only = 1; 1237 1238 ret = core_tpg_register(&tcm_qla2xxx_npiv_fabric_configfs->tf_ops, wwn, 1239 &tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL); 1240 if (ret < 0) { 1241 kfree(tpg); 1242 return NULL; 1243 } 1244 lport->tpg_1 = tpg; 1245 return &tpg->se_tpg; 1246 } 1247 1248 /* 1249 * Expected to be called with struct qla_hw_data->hardware_lock held 1250 */ 1251 static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_s_id( 1252 scsi_qla_host_t *vha, 1253 const uint8_t *s_id) 1254 { 1255 struct tcm_qla2xxx_lport *lport; 1256 struct se_node_acl *se_nacl; 1257 struct tcm_qla2xxx_nacl *nacl; 1258 u32 key; 1259 1260 lport = vha->vha_tgt.target_lport_ptr; 1261 if (!lport) { 1262 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1263 dump_stack(); 1264 return NULL; 1265 } 1266 1267 key = (((unsigned long)s_id[0] << 16) | 1268 ((unsigned long)s_id[1] << 8) | 1269 (unsigned long)s_id[2]); 1270 pr_debug("find_sess_by_s_id: 0x%06x\n", key); 1271 1272 se_nacl = btree_lookup32(&lport->lport_fcport_map, key); 1273 if (!se_nacl) { 1274 pr_debug("Unable to locate s_id: 0x%06x\n", key); 1275 return NULL; 1276 } 1277 pr_debug("find_sess_by_s_id: located se_nacl: %p, initiatorname: %s\n", 1278 se_nacl, se_nacl->initiatorname); 1279 1280 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1281 if (!nacl->qla_tgt_sess) { 1282 pr_err("Unable to locate struct qla_tgt_sess\n"); 1283 return NULL; 1284 } 1285 1286 return nacl->qla_tgt_sess; 1287 } 1288 1289 /* 1290 * Expected to be called with struct qla_hw_data->hardware_lock held 1291 */ 1292 static void tcm_qla2xxx_set_sess_by_s_id( 1293 struct tcm_qla2xxx_lport *lport, 1294 struct se_node_acl *new_se_nacl, 1295 struct tcm_qla2xxx_nacl *nacl, 1296 struct se_session *se_sess, 1297 struct qla_tgt_sess *qla_tgt_sess, 1298 uint8_t *s_id) 1299 { 1300 u32 key; 1301 void *slot; 1302 int rc; 1303 1304 key = (((unsigned long)s_id[0] << 16) | 1305 ((unsigned long)s_id[1] << 8) | 1306 (unsigned long)s_id[2]); 1307 pr_debug("set_sess_by_s_id: %06x\n", key); 1308 1309 slot = btree_lookup32(&lport->lport_fcport_map, key); 1310 if (!slot) { 1311 if (new_se_nacl) { 1312 pr_debug("Setting up new fc_port entry to new_se_nacl\n"); 1313 nacl->nport_id = key; 1314 rc = btree_insert32(&lport->lport_fcport_map, key, 1315 new_se_nacl, GFP_ATOMIC); 1316 if (rc) 1317 printk(KERN_ERR "Unable to insert s_id into fcport_map: %06x\n", 1318 (int)key); 1319 } else { 1320 pr_debug("Wiping nonexisting fc_port entry\n"); 1321 } 1322 1323 qla_tgt_sess->se_sess = se_sess; 1324 nacl->qla_tgt_sess = qla_tgt_sess; 1325 return; 1326 } 1327 1328 if (nacl->qla_tgt_sess) { 1329 if (new_se_nacl == NULL) { 1330 pr_debug("Clearing existing nacl->qla_tgt_sess and fc_port entry\n"); 1331 btree_remove32(&lport->lport_fcport_map, key); 1332 nacl->qla_tgt_sess = NULL; 1333 return; 1334 } 1335 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_port entry\n"); 1336 btree_update32(&lport->lport_fcport_map, key, new_se_nacl); 1337 qla_tgt_sess->se_sess = se_sess; 1338 nacl->qla_tgt_sess = qla_tgt_sess; 1339 return; 1340 } 1341 1342 if (new_se_nacl == NULL) { 1343 pr_debug("Clearing existing fc_port entry\n"); 1344 btree_remove32(&lport->lport_fcport_map, key); 1345 return; 1346 } 1347 1348 pr_debug("Replacing existing fc_port entry w/o active nacl->qla_tgt_sess\n"); 1349 btree_update32(&lport->lport_fcport_map, key, new_se_nacl); 1350 qla_tgt_sess->se_sess = se_sess; 1351 nacl->qla_tgt_sess = qla_tgt_sess; 1352 1353 pr_debug("Setup nacl->qla_tgt_sess %p by s_id for se_nacl: %p, initiatorname: %s\n", 1354 nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname); 1355 } 1356 1357 /* 1358 * Expected to be called with struct qla_hw_data->hardware_lock held 1359 */ 1360 static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_loop_id( 1361 scsi_qla_host_t *vha, 1362 const uint16_t loop_id) 1363 { 1364 struct tcm_qla2xxx_lport *lport; 1365 struct se_node_acl *se_nacl; 1366 struct tcm_qla2xxx_nacl *nacl; 1367 struct tcm_qla2xxx_fc_loopid *fc_loopid; 1368 1369 lport = vha->vha_tgt.target_lport_ptr; 1370 if (!lport) { 1371 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1372 dump_stack(); 1373 return NULL; 1374 } 1375 1376 pr_debug("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id); 1377 1378 fc_loopid = lport->lport_loopid_map + loop_id; 1379 se_nacl = fc_loopid->se_nacl; 1380 if (!se_nacl) { 1381 pr_debug("Unable to locate se_nacl by loop_id: 0x%04x\n", 1382 loop_id); 1383 return NULL; 1384 } 1385 1386 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1387 1388 if (!nacl->qla_tgt_sess) { 1389 pr_err("Unable to locate struct qla_tgt_sess\n"); 1390 return NULL; 1391 } 1392 1393 return nacl->qla_tgt_sess; 1394 } 1395 1396 /* 1397 * Expected to be called with struct qla_hw_data->hardware_lock held 1398 */ 1399 static void tcm_qla2xxx_set_sess_by_loop_id( 1400 struct tcm_qla2xxx_lport *lport, 1401 struct se_node_acl *new_se_nacl, 1402 struct tcm_qla2xxx_nacl *nacl, 1403 struct se_session *se_sess, 1404 struct qla_tgt_sess *qla_tgt_sess, 1405 uint16_t loop_id) 1406 { 1407 struct se_node_acl *saved_nacl; 1408 struct tcm_qla2xxx_fc_loopid *fc_loopid; 1409 1410 pr_debug("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id); 1411 1412 fc_loopid = &((struct tcm_qla2xxx_fc_loopid *) 1413 lport->lport_loopid_map)[loop_id]; 1414 1415 saved_nacl = fc_loopid->se_nacl; 1416 if (!saved_nacl) { 1417 pr_debug("Setting up new fc_loopid->se_nacl to new_se_nacl\n"); 1418 fc_loopid->se_nacl = new_se_nacl; 1419 if (qla_tgt_sess->se_sess != se_sess) 1420 qla_tgt_sess->se_sess = se_sess; 1421 if (nacl->qla_tgt_sess != qla_tgt_sess) 1422 nacl->qla_tgt_sess = qla_tgt_sess; 1423 return; 1424 } 1425 1426 if (nacl->qla_tgt_sess) { 1427 if (new_se_nacl == NULL) { 1428 pr_debug("Clearing nacl->qla_tgt_sess and fc_loopid->se_nacl\n"); 1429 fc_loopid->se_nacl = NULL; 1430 nacl->qla_tgt_sess = NULL; 1431 return; 1432 } 1433 1434 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_loopid->se_nacl\n"); 1435 fc_loopid->se_nacl = new_se_nacl; 1436 if (qla_tgt_sess->se_sess != se_sess) 1437 qla_tgt_sess->se_sess = se_sess; 1438 if (nacl->qla_tgt_sess != qla_tgt_sess) 1439 nacl->qla_tgt_sess = qla_tgt_sess; 1440 return; 1441 } 1442 1443 if (new_se_nacl == NULL) { 1444 pr_debug("Clearing fc_loopid->se_nacl\n"); 1445 fc_loopid->se_nacl = NULL; 1446 return; 1447 } 1448 1449 pr_debug("Replacing existing fc_loopid->se_nacl w/o active nacl->qla_tgt_sess\n"); 1450 fc_loopid->se_nacl = new_se_nacl; 1451 if (qla_tgt_sess->se_sess != se_sess) 1452 qla_tgt_sess->se_sess = se_sess; 1453 if (nacl->qla_tgt_sess != qla_tgt_sess) 1454 nacl->qla_tgt_sess = qla_tgt_sess; 1455 1456 pr_debug("Setup nacl->qla_tgt_sess %p by loop_id for se_nacl: %p, initiatorname: %s\n", 1457 nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname); 1458 } 1459 1460 /* 1461 * Should always be called with qla_hw_data->hardware_lock held. 1462 */ 1463 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *lport, 1464 struct tcm_qla2xxx_nacl *nacl, struct qla_tgt_sess *sess) 1465 { 1466 struct se_session *se_sess = sess->se_sess; 1467 unsigned char be_sid[3]; 1468 1469 be_sid[0] = sess->s_id.b.domain; 1470 be_sid[1] = sess->s_id.b.area; 1471 be_sid[2] = sess->s_id.b.al_pa; 1472 1473 tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess, 1474 sess, be_sid); 1475 tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess, 1476 sess, sess->loop_id); 1477 } 1478 1479 static void tcm_qla2xxx_free_session(struct qla_tgt_sess *sess) 1480 { 1481 struct qla_tgt *tgt = sess->tgt; 1482 struct qla_hw_data *ha = tgt->ha; 1483 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev); 1484 struct se_session *se_sess; 1485 struct se_node_acl *se_nacl; 1486 struct tcm_qla2xxx_lport *lport; 1487 struct tcm_qla2xxx_nacl *nacl; 1488 1489 BUG_ON(in_interrupt()); 1490 1491 se_sess = sess->se_sess; 1492 if (!se_sess) { 1493 pr_err("struct qla_tgt_sess->se_sess is NULL\n"); 1494 dump_stack(); 1495 return; 1496 } 1497 se_nacl = se_sess->se_node_acl; 1498 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1499 1500 lport = vha->vha_tgt.target_lport_ptr; 1501 if (!lport) { 1502 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1503 dump_stack(); 1504 return; 1505 } 1506 target_wait_for_sess_cmds(se_sess); 1507 1508 transport_deregister_session_configfs(sess->se_sess); 1509 transport_deregister_session(sess->se_sess); 1510 } 1511 1512 /* 1513 * Called via qlt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl() 1514 * to locate struct se_node_acl 1515 */ 1516 static int tcm_qla2xxx_check_initiator_node_acl( 1517 scsi_qla_host_t *vha, 1518 unsigned char *fc_wwpn, 1519 void *qla_tgt_sess, 1520 uint8_t *s_id, 1521 uint16_t loop_id) 1522 { 1523 struct qla_hw_data *ha = vha->hw; 1524 struct tcm_qla2xxx_lport *lport; 1525 struct tcm_qla2xxx_tpg *tpg; 1526 struct tcm_qla2xxx_nacl *nacl; 1527 struct se_portal_group *se_tpg; 1528 struct se_node_acl *se_nacl; 1529 struct se_session *se_sess; 1530 struct qla_tgt_sess *sess = qla_tgt_sess; 1531 unsigned char port_name[36]; 1532 unsigned long flags; 1533 int num_tags = (ha->fw_xcb_count) ? ha->fw_xcb_count : 1534 TCM_QLA2XXX_DEFAULT_TAGS; 1535 1536 lport = vha->vha_tgt.target_lport_ptr; 1537 if (!lport) { 1538 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1539 dump_stack(); 1540 return -EINVAL; 1541 } 1542 /* 1543 * Locate the TPG=1 reference.. 1544 */ 1545 tpg = lport->tpg_1; 1546 if (!tpg) { 1547 pr_err("Unable to lcoate struct tcm_qla2xxx_lport->tpg_1\n"); 1548 return -EINVAL; 1549 } 1550 se_tpg = &tpg->se_tpg; 1551 1552 se_sess = transport_init_session_tags(num_tags, 1553 sizeof(struct qla_tgt_cmd), 1554 TARGET_PROT_NORMAL); 1555 if (IS_ERR(se_sess)) { 1556 pr_err("Unable to initialize struct se_session\n"); 1557 return PTR_ERR(se_sess); 1558 } 1559 /* 1560 * Format the FCP Initiator port_name into colon seperated values to 1561 * match the format by tcm_qla2xxx explict ConfigFS NodeACLs. 1562 */ 1563 memset(&port_name, 0, 36); 1564 snprintf(port_name, 36, "%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x", 1565 fc_wwpn[0], fc_wwpn[1], fc_wwpn[2], fc_wwpn[3], fc_wwpn[4], 1566 fc_wwpn[5], fc_wwpn[6], fc_wwpn[7]); 1567 /* 1568 * Locate our struct se_node_acl either from an explict NodeACL created 1569 * via ConfigFS, or via running in TPG demo mode. 1570 */ 1571 se_sess->se_node_acl = core_tpg_check_initiator_node_acl(se_tpg, 1572 port_name); 1573 if (!se_sess->se_node_acl) { 1574 transport_free_session(se_sess); 1575 return -EINVAL; 1576 } 1577 se_nacl = se_sess->se_node_acl; 1578 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1579 /* 1580 * And now setup the new se_nacl and session pointers into our HW lport 1581 * mappings for fabric S_ID and LOOP_ID. 1582 */ 1583 spin_lock_irqsave(&ha->hardware_lock, flags); 1584 tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl, se_sess, 1585 qla_tgt_sess, s_id); 1586 tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl, se_sess, 1587 qla_tgt_sess, loop_id); 1588 spin_unlock_irqrestore(&ha->hardware_lock, flags); 1589 /* 1590 * Finally register the new FC Nexus with TCM 1591 */ 1592 __transport_register_session(se_nacl->se_tpg, se_nacl, se_sess, sess); 1593 1594 return 0; 1595 } 1596 1597 static void tcm_qla2xxx_update_sess(struct qla_tgt_sess *sess, port_id_t s_id, 1598 uint16_t loop_id, bool conf_compl_supported) 1599 { 1600 struct qla_tgt *tgt = sess->tgt; 1601 struct qla_hw_data *ha = tgt->ha; 1602 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev); 1603 struct tcm_qla2xxx_lport *lport = vha->vha_tgt.target_lport_ptr; 1604 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl; 1605 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl, 1606 struct tcm_qla2xxx_nacl, se_node_acl); 1607 u32 key; 1608 1609 1610 if (sess->loop_id != loop_id || sess->s_id.b24 != s_id.b24) 1611 pr_info("Updating session %p from port %8phC loop_id %d -> %d s_id %x:%x:%x -> %x:%x:%x\n", 1612 sess, sess->port_name, 1613 sess->loop_id, loop_id, sess->s_id.b.domain, 1614 sess->s_id.b.area, sess->s_id.b.al_pa, s_id.b.domain, 1615 s_id.b.area, s_id.b.al_pa); 1616 1617 if (sess->loop_id != loop_id) { 1618 /* 1619 * Because we can shuffle loop IDs around and we 1620 * update different sessions non-atomically, we might 1621 * have overwritten this session's old loop ID 1622 * already, and we might end up overwriting some other 1623 * session that will be updated later. So we have to 1624 * be extra careful and we can't warn about those things... 1625 */ 1626 if (lport->lport_loopid_map[sess->loop_id].se_nacl == se_nacl) 1627 lport->lport_loopid_map[sess->loop_id].se_nacl = NULL; 1628 1629 lport->lport_loopid_map[loop_id].se_nacl = se_nacl; 1630 1631 sess->loop_id = loop_id; 1632 } 1633 1634 if (sess->s_id.b24 != s_id.b24) { 1635 key = (((u32) sess->s_id.b.domain << 16) | 1636 ((u32) sess->s_id.b.area << 8) | 1637 ((u32) sess->s_id.b.al_pa)); 1638 1639 if (btree_lookup32(&lport->lport_fcport_map, key)) 1640 WARN(btree_remove32(&lport->lport_fcport_map, key) != se_nacl, 1641 "Found wrong se_nacl when updating s_id %x:%x:%x\n", 1642 sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa); 1643 else 1644 WARN(1, "No lport_fcport_map entry for s_id %x:%x:%x\n", 1645 sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa); 1646 1647 key = (((u32) s_id.b.domain << 16) | 1648 ((u32) s_id.b.area << 8) | 1649 ((u32) s_id.b.al_pa)); 1650 1651 if (btree_lookup32(&lport->lport_fcport_map, key)) { 1652 WARN(1, "Already have lport_fcport_map entry for s_id %x:%x:%x\n", 1653 s_id.b.domain, s_id.b.area, s_id.b.al_pa); 1654 btree_update32(&lport->lport_fcport_map, key, se_nacl); 1655 } else { 1656 btree_insert32(&lport->lport_fcport_map, key, se_nacl, GFP_ATOMIC); 1657 } 1658 1659 sess->s_id = s_id; 1660 nacl->nport_id = key; 1661 } 1662 1663 sess->conf_compl_supported = conf_compl_supported; 1664 } 1665 1666 /* 1667 * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path. 1668 */ 1669 static struct qla_tgt_func_tmpl tcm_qla2xxx_template = { 1670 .handle_cmd = tcm_qla2xxx_handle_cmd, 1671 .handle_data = tcm_qla2xxx_handle_data, 1672 .handle_dif_err = tcm_qla2xxx_handle_dif_err, 1673 .handle_tmr = tcm_qla2xxx_handle_tmr, 1674 .free_cmd = tcm_qla2xxx_free_cmd, 1675 .free_mcmd = tcm_qla2xxx_free_mcmd, 1676 .free_session = tcm_qla2xxx_free_session, 1677 .update_sess = tcm_qla2xxx_update_sess, 1678 .check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl, 1679 .find_sess_by_s_id = tcm_qla2xxx_find_sess_by_s_id, 1680 .find_sess_by_loop_id = tcm_qla2xxx_find_sess_by_loop_id, 1681 .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map, 1682 .put_sess = tcm_qla2xxx_put_sess, 1683 .shutdown_sess = tcm_qla2xxx_shutdown_sess, 1684 }; 1685 1686 static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport) 1687 { 1688 int rc; 1689 1690 rc = btree_init32(&lport->lport_fcport_map); 1691 if (rc) { 1692 pr_err("Unable to initialize lport->lport_fcport_map btree\n"); 1693 return rc; 1694 } 1695 1696 lport->lport_loopid_map = vmalloc(sizeof(struct tcm_qla2xxx_fc_loopid) * 1697 65536); 1698 if (!lport->lport_loopid_map) { 1699 pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n", 1700 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536); 1701 btree_destroy32(&lport->lport_fcport_map); 1702 return -ENOMEM; 1703 } 1704 memset(lport->lport_loopid_map, 0, sizeof(struct tcm_qla2xxx_fc_loopid) 1705 * 65536); 1706 pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n", 1707 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536); 1708 return 0; 1709 } 1710 1711 static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha, 1712 void *target_lport_ptr, 1713 u64 npiv_wwpn, u64 npiv_wwnn) 1714 { 1715 struct qla_hw_data *ha = vha->hw; 1716 struct tcm_qla2xxx_lport *lport = 1717 (struct tcm_qla2xxx_lport *)target_lport_ptr; 1718 /* 1719 * Setup tgt_ops, local pointer to vha and target_lport_ptr 1720 */ 1721 ha->tgt.tgt_ops = &tcm_qla2xxx_template; 1722 vha->vha_tgt.target_lport_ptr = target_lport_ptr; 1723 lport->qla_vha = vha; 1724 1725 return 0; 1726 } 1727 1728 static struct se_wwn *tcm_qla2xxx_make_lport( 1729 struct target_fabric_configfs *tf, 1730 struct config_group *group, 1731 const char *name) 1732 { 1733 struct tcm_qla2xxx_lport *lport; 1734 u64 wwpn; 1735 int ret = -ENODEV; 1736 1737 if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0) 1738 return ERR_PTR(-EINVAL); 1739 1740 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL); 1741 if (!lport) { 1742 pr_err("Unable to allocate struct tcm_qla2xxx_lport\n"); 1743 return ERR_PTR(-ENOMEM); 1744 } 1745 lport->lport_wwpn = wwpn; 1746 tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN, 1747 wwpn); 1748 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) wwpn); 1749 1750 ret = tcm_qla2xxx_init_lport(lport); 1751 if (ret != 0) 1752 goto out; 1753 1754 ret = qlt_lport_register(lport, wwpn, 0, 0, 1755 tcm_qla2xxx_lport_register_cb); 1756 if (ret != 0) 1757 goto out_lport; 1758 1759 return &lport->lport_wwn; 1760 out_lport: 1761 vfree(lport->lport_loopid_map); 1762 btree_destroy32(&lport->lport_fcport_map); 1763 out: 1764 kfree(lport); 1765 return ERR_PTR(ret); 1766 } 1767 1768 static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn) 1769 { 1770 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1771 struct tcm_qla2xxx_lport, lport_wwn); 1772 struct scsi_qla_host *vha = lport->qla_vha; 1773 struct se_node_acl *node; 1774 u32 key = 0; 1775 1776 /* 1777 * Call into qla2x_target.c LLD logic to complete the 1778 * shutdown of struct qla_tgt after the call to 1779 * qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above.. 1780 */ 1781 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stopped) 1782 qlt_stop_phase2(vha->vha_tgt.qla_tgt); 1783 1784 qlt_lport_deregister(vha); 1785 1786 vfree(lport->lport_loopid_map); 1787 btree_for_each_safe32(&lport->lport_fcport_map, key, node) 1788 btree_remove32(&lport->lport_fcport_map, key); 1789 btree_destroy32(&lport->lport_fcport_map); 1790 kfree(lport); 1791 } 1792 1793 static int tcm_qla2xxx_lport_register_npiv_cb(struct scsi_qla_host *base_vha, 1794 void *target_lport_ptr, 1795 u64 npiv_wwpn, u64 npiv_wwnn) 1796 { 1797 struct fc_vport *vport; 1798 struct Scsi_Host *sh = base_vha->host; 1799 struct scsi_qla_host *npiv_vha; 1800 struct tcm_qla2xxx_lport *lport = 1801 (struct tcm_qla2xxx_lport *)target_lport_ptr; 1802 struct tcm_qla2xxx_lport *base_lport = 1803 (struct tcm_qla2xxx_lport *)base_vha->vha_tgt.target_lport_ptr; 1804 struct tcm_qla2xxx_tpg *base_tpg; 1805 struct fc_vport_identifiers vport_id; 1806 1807 if (!qla_tgt_mode_enabled(base_vha)) { 1808 pr_err("qla2xxx base_vha not enabled for target mode\n"); 1809 return -EPERM; 1810 } 1811 1812 if (!base_lport || !base_lport->tpg_1 || 1813 !atomic_read(&base_lport->tpg_1->lport_tpg_enabled)) { 1814 pr_err("qla2xxx base_lport or tpg_1 not available\n"); 1815 return -EPERM; 1816 } 1817 base_tpg = base_lport->tpg_1; 1818 1819 memset(&vport_id, 0, sizeof(vport_id)); 1820 vport_id.port_name = npiv_wwpn; 1821 vport_id.node_name = npiv_wwnn; 1822 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR; 1823 vport_id.vport_type = FC_PORTTYPE_NPIV; 1824 vport_id.disable = false; 1825 1826 vport = fc_vport_create(sh, 0, &vport_id); 1827 if (!vport) { 1828 pr_err("fc_vport_create failed for qla2xxx_npiv\n"); 1829 return -ENODEV; 1830 } 1831 /* 1832 * Setup local pointer to NPIV vhba + target_lport_ptr 1833 */ 1834 npiv_vha = (struct scsi_qla_host *)vport->dd_data; 1835 npiv_vha->vha_tgt.target_lport_ptr = target_lport_ptr; 1836 lport->qla_vha = npiv_vha; 1837 scsi_host_get(npiv_vha->host); 1838 return 0; 1839 } 1840 1841 1842 static struct se_wwn *tcm_qla2xxx_npiv_make_lport( 1843 struct target_fabric_configfs *tf, 1844 struct config_group *group, 1845 const char *name) 1846 { 1847 struct tcm_qla2xxx_lport *lport; 1848 u64 phys_wwpn, npiv_wwpn, npiv_wwnn; 1849 char *p, tmp[128]; 1850 int ret; 1851 1852 snprintf(tmp, 128, "%s", name); 1853 1854 p = strchr(tmp, '@'); 1855 if (!p) { 1856 pr_err("Unable to locate NPIV '@' seperator\n"); 1857 return ERR_PTR(-EINVAL); 1858 } 1859 *p++ = '\0'; 1860 1861 if (tcm_qla2xxx_parse_wwn(tmp, &phys_wwpn, 1) < 0) 1862 return ERR_PTR(-EINVAL); 1863 1864 if (tcm_qla2xxx_npiv_parse_wwn(p, strlen(p)+1, 1865 &npiv_wwpn, &npiv_wwnn) < 0) 1866 return ERR_PTR(-EINVAL); 1867 1868 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL); 1869 if (!lport) { 1870 pr_err("Unable to allocate struct tcm_qla2xxx_lport for NPIV\n"); 1871 return ERR_PTR(-ENOMEM); 1872 } 1873 lport->lport_npiv_wwpn = npiv_wwpn; 1874 lport->lport_npiv_wwnn = npiv_wwnn; 1875 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) npiv_wwpn); 1876 1877 ret = tcm_qla2xxx_init_lport(lport); 1878 if (ret != 0) 1879 goto out; 1880 1881 ret = qlt_lport_register(lport, phys_wwpn, npiv_wwpn, npiv_wwnn, 1882 tcm_qla2xxx_lport_register_npiv_cb); 1883 if (ret != 0) 1884 goto out_lport; 1885 1886 return &lport->lport_wwn; 1887 out_lport: 1888 vfree(lport->lport_loopid_map); 1889 btree_destroy32(&lport->lport_fcport_map); 1890 out: 1891 kfree(lport); 1892 return ERR_PTR(ret); 1893 } 1894 1895 static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn) 1896 { 1897 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1898 struct tcm_qla2xxx_lport, lport_wwn); 1899 struct scsi_qla_host *npiv_vha = lport->qla_vha; 1900 struct qla_hw_data *ha = npiv_vha->hw; 1901 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 1902 1903 scsi_host_put(npiv_vha->host); 1904 /* 1905 * Notify libfc that we want to release the vha->fc_vport 1906 */ 1907 fc_vport_terminate(npiv_vha->fc_vport); 1908 scsi_host_put(base_vha->host); 1909 kfree(lport); 1910 } 1911 1912 1913 static ssize_t tcm_qla2xxx_wwn_show_attr_version( 1914 struct target_fabric_configfs *tf, 1915 char *page) 1916 { 1917 return sprintf(page, 1918 "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s on " 1919 UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname, 1920 utsname()->machine); 1921 } 1922 1923 TF_WWN_ATTR_RO(tcm_qla2xxx, version); 1924 1925 static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = { 1926 &tcm_qla2xxx_wwn_version.attr, 1927 NULL, 1928 }; 1929 1930 static struct target_core_fabric_ops tcm_qla2xxx_ops = { 1931 .get_fabric_name = tcm_qla2xxx_get_fabric_name, 1932 .get_fabric_proto_ident = tcm_qla2xxx_get_fabric_proto_ident, 1933 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn, 1934 .tpg_get_tag = tcm_qla2xxx_get_tag, 1935 .tpg_get_default_depth = tcm_qla2xxx_get_default_depth, 1936 .tpg_get_pr_transport_id = tcm_qla2xxx_get_pr_transport_id, 1937 .tpg_get_pr_transport_id_len = tcm_qla2xxx_get_pr_transport_id_len, 1938 .tpg_parse_pr_out_transport_id = tcm_qla2xxx_parse_pr_out_transport_id, 1939 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode, 1940 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache, 1941 .tpg_check_demo_mode_write_protect = 1942 tcm_qla2xxx_check_demo_write_protect, 1943 .tpg_check_prod_mode_write_protect = 1944 tcm_qla2xxx_check_prod_write_protect, 1945 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only, 1946 .tpg_alloc_fabric_acl = tcm_qla2xxx_alloc_fabric_acl, 1947 .tpg_release_fabric_acl = tcm_qla2xxx_release_fabric_acl, 1948 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index, 1949 .check_stop_free = tcm_qla2xxx_check_stop_free, 1950 .release_cmd = tcm_qla2xxx_release_cmd, 1951 .put_session = tcm_qla2xxx_put_session, 1952 .shutdown_session = tcm_qla2xxx_shutdown_session, 1953 .close_session = tcm_qla2xxx_close_session, 1954 .sess_get_index = tcm_qla2xxx_sess_get_index, 1955 .sess_get_initiator_sid = NULL, 1956 .write_pending = tcm_qla2xxx_write_pending, 1957 .write_pending_status = tcm_qla2xxx_write_pending_status, 1958 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs, 1959 .get_task_tag = tcm_qla2xxx_get_task_tag, 1960 .get_cmd_state = tcm_qla2xxx_get_cmd_state, 1961 .queue_data_in = tcm_qla2xxx_queue_data_in, 1962 .queue_status = tcm_qla2xxx_queue_status, 1963 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp, 1964 .aborted_task = tcm_qla2xxx_aborted_task, 1965 /* 1966 * Setup function pointers for generic logic in 1967 * target_core_fabric_configfs.c 1968 */ 1969 .fabric_make_wwn = tcm_qla2xxx_make_lport, 1970 .fabric_drop_wwn = tcm_qla2xxx_drop_lport, 1971 .fabric_make_tpg = tcm_qla2xxx_make_tpg, 1972 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg, 1973 .fabric_post_link = NULL, 1974 .fabric_pre_unlink = NULL, 1975 .fabric_make_np = NULL, 1976 .fabric_drop_np = NULL, 1977 .fabric_make_nodeacl = tcm_qla2xxx_make_nodeacl, 1978 .fabric_drop_nodeacl = tcm_qla2xxx_drop_nodeacl, 1979 }; 1980 1981 static struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = { 1982 .get_fabric_name = tcm_qla2xxx_npiv_get_fabric_name, 1983 .get_fabric_proto_ident = tcm_qla2xxx_get_fabric_proto_ident, 1984 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn, 1985 .tpg_get_tag = tcm_qla2xxx_get_tag, 1986 .tpg_get_default_depth = tcm_qla2xxx_get_default_depth, 1987 .tpg_get_pr_transport_id = tcm_qla2xxx_get_pr_transport_id, 1988 .tpg_get_pr_transport_id_len = tcm_qla2xxx_get_pr_transport_id_len, 1989 .tpg_parse_pr_out_transport_id = tcm_qla2xxx_parse_pr_out_transport_id, 1990 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode, 1991 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache, 1992 .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_demo_mode, 1993 .tpg_check_prod_mode_write_protect = 1994 tcm_qla2xxx_check_prod_write_protect, 1995 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only, 1996 .tpg_alloc_fabric_acl = tcm_qla2xxx_alloc_fabric_acl, 1997 .tpg_release_fabric_acl = tcm_qla2xxx_release_fabric_acl, 1998 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index, 1999 .check_stop_free = tcm_qla2xxx_check_stop_free, 2000 .release_cmd = tcm_qla2xxx_release_cmd, 2001 .put_session = tcm_qla2xxx_put_session, 2002 .shutdown_session = tcm_qla2xxx_shutdown_session, 2003 .close_session = tcm_qla2xxx_close_session, 2004 .sess_get_index = tcm_qla2xxx_sess_get_index, 2005 .sess_get_initiator_sid = NULL, 2006 .write_pending = tcm_qla2xxx_write_pending, 2007 .write_pending_status = tcm_qla2xxx_write_pending_status, 2008 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs, 2009 .get_task_tag = tcm_qla2xxx_get_task_tag, 2010 .get_cmd_state = tcm_qla2xxx_get_cmd_state, 2011 .queue_data_in = tcm_qla2xxx_queue_data_in, 2012 .queue_status = tcm_qla2xxx_queue_status, 2013 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp, 2014 .aborted_task = tcm_qla2xxx_aborted_task, 2015 /* 2016 * Setup function pointers for generic logic in 2017 * target_core_fabric_configfs.c 2018 */ 2019 .fabric_make_wwn = tcm_qla2xxx_npiv_make_lport, 2020 .fabric_drop_wwn = tcm_qla2xxx_npiv_drop_lport, 2021 .fabric_make_tpg = tcm_qla2xxx_npiv_make_tpg, 2022 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg, 2023 .fabric_post_link = NULL, 2024 .fabric_pre_unlink = NULL, 2025 .fabric_make_np = NULL, 2026 .fabric_drop_np = NULL, 2027 .fabric_make_nodeacl = tcm_qla2xxx_make_nodeacl, 2028 .fabric_drop_nodeacl = tcm_qla2xxx_drop_nodeacl, 2029 }; 2030 2031 static int tcm_qla2xxx_register_configfs(void) 2032 { 2033 struct target_fabric_configfs *fabric, *npiv_fabric; 2034 int ret; 2035 2036 pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on " 2037 UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname, 2038 utsname()->machine); 2039 /* 2040 * Register the top level struct config_item_type with TCM core 2041 */ 2042 fabric = target_fabric_configfs_init(THIS_MODULE, "qla2xxx"); 2043 if (IS_ERR(fabric)) { 2044 pr_err("target_fabric_configfs_init() failed\n"); 2045 return PTR_ERR(fabric); 2046 } 2047 /* 2048 * Setup fabric->tf_ops from our local tcm_qla2xxx_ops 2049 */ 2050 fabric->tf_ops = tcm_qla2xxx_ops; 2051 /* 2052 * Setup default attribute lists for various fabric->tf_cit_tmpl 2053 */ 2054 fabric->tf_cit_tmpl.tfc_wwn_cit.ct_attrs = tcm_qla2xxx_wwn_attrs; 2055 fabric->tf_cit_tmpl.tfc_tpg_base_cit.ct_attrs = tcm_qla2xxx_tpg_attrs; 2056 fabric->tf_cit_tmpl.tfc_tpg_attrib_cit.ct_attrs = 2057 tcm_qla2xxx_tpg_attrib_attrs; 2058 fabric->tf_cit_tmpl.tfc_tpg_param_cit.ct_attrs = NULL; 2059 fabric->tf_cit_tmpl.tfc_tpg_np_base_cit.ct_attrs = NULL; 2060 fabric->tf_cit_tmpl.tfc_tpg_nacl_base_cit.ct_attrs = NULL; 2061 fabric->tf_cit_tmpl.tfc_tpg_nacl_attrib_cit.ct_attrs = NULL; 2062 fabric->tf_cit_tmpl.tfc_tpg_nacl_auth_cit.ct_attrs = NULL; 2063 fabric->tf_cit_tmpl.tfc_tpg_nacl_param_cit.ct_attrs = NULL; 2064 /* 2065 * Register the fabric for use within TCM 2066 */ 2067 ret = target_fabric_configfs_register(fabric); 2068 if (ret < 0) { 2069 pr_err("target_fabric_configfs_register() failed for TCM_QLA2XXX\n"); 2070 return ret; 2071 } 2072 /* 2073 * Setup our local pointer to *fabric 2074 */ 2075 tcm_qla2xxx_fabric_configfs = fabric; 2076 pr_debug("TCM_QLA2XXX[0] - Set fabric -> tcm_qla2xxx_fabric_configfs\n"); 2077 2078 /* 2079 * Register the top level struct config_item_type for NPIV with TCM core 2080 */ 2081 npiv_fabric = target_fabric_configfs_init(THIS_MODULE, "qla2xxx_npiv"); 2082 if (IS_ERR(npiv_fabric)) { 2083 pr_err("target_fabric_configfs_init() failed\n"); 2084 ret = PTR_ERR(npiv_fabric); 2085 goto out_fabric; 2086 } 2087 /* 2088 * Setup fabric->tf_ops from our local tcm_qla2xxx_npiv_ops 2089 */ 2090 npiv_fabric->tf_ops = tcm_qla2xxx_npiv_ops; 2091 /* 2092 * Setup default attribute lists for various npiv_fabric->tf_cit_tmpl 2093 */ 2094 npiv_fabric->tf_cit_tmpl.tfc_wwn_cit.ct_attrs = tcm_qla2xxx_wwn_attrs; 2095 npiv_fabric->tf_cit_tmpl.tfc_tpg_base_cit.ct_attrs = 2096 tcm_qla2xxx_npiv_tpg_attrs; 2097 npiv_fabric->tf_cit_tmpl.tfc_tpg_attrib_cit.ct_attrs = NULL; 2098 npiv_fabric->tf_cit_tmpl.tfc_tpg_param_cit.ct_attrs = NULL; 2099 npiv_fabric->tf_cit_tmpl.tfc_tpg_np_base_cit.ct_attrs = NULL; 2100 npiv_fabric->tf_cit_tmpl.tfc_tpg_nacl_base_cit.ct_attrs = NULL; 2101 npiv_fabric->tf_cit_tmpl.tfc_tpg_nacl_attrib_cit.ct_attrs = NULL; 2102 npiv_fabric->tf_cit_tmpl.tfc_tpg_nacl_auth_cit.ct_attrs = NULL; 2103 npiv_fabric->tf_cit_tmpl.tfc_tpg_nacl_param_cit.ct_attrs = NULL; 2104 /* 2105 * Register the npiv_fabric for use within TCM 2106 */ 2107 ret = target_fabric_configfs_register(npiv_fabric); 2108 if (ret < 0) { 2109 pr_err("target_fabric_configfs_register() failed for TCM_QLA2XXX\n"); 2110 goto out_fabric; 2111 } 2112 /* 2113 * Setup our local pointer to *npiv_fabric 2114 */ 2115 tcm_qla2xxx_npiv_fabric_configfs = npiv_fabric; 2116 pr_debug("TCM_QLA2XXX[0] - Set fabric -> tcm_qla2xxx_npiv_fabric_configfs\n"); 2117 2118 tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free", 2119 WQ_MEM_RECLAIM, 0); 2120 if (!tcm_qla2xxx_free_wq) { 2121 ret = -ENOMEM; 2122 goto out_fabric_npiv; 2123 } 2124 2125 tcm_qla2xxx_cmd_wq = alloc_workqueue("tcm_qla2xxx_cmd", 0, 0); 2126 if (!tcm_qla2xxx_cmd_wq) { 2127 ret = -ENOMEM; 2128 goto out_free_wq; 2129 } 2130 2131 return 0; 2132 2133 out_free_wq: 2134 destroy_workqueue(tcm_qla2xxx_free_wq); 2135 out_fabric_npiv: 2136 target_fabric_configfs_deregister(tcm_qla2xxx_npiv_fabric_configfs); 2137 out_fabric: 2138 target_fabric_configfs_deregister(tcm_qla2xxx_fabric_configfs); 2139 return ret; 2140 } 2141 2142 static void tcm_qla2xxx_deregister_configfs(void) 2143 { 2144 destroy_workqueue(tcm_qla2xxx_cmd_wq); 2145 destroy_workqueue(tcm_qla2xxx_free_wq); 2146 2147 target_fabric_configfs_deregister(tcm_qla2xxx_fabric_configfs); 2148 tcm_qla2xxx_fabric_configfs = NULL; 2149 pr_debug("TCM_QLA2XXX[0] - Cleared tcm_qla2xxx_fabric_configfs\n"); 2150 2151 target_fabric_configfs_deregister(tcm_qla2xxx_npiv_fabric_configfs); 2152 tcm_qla2xxx_npiv_fabric_configfs = NULL; 2153 pr_debug("TCM_QLA2XXX[0] - Cleared tcm_qla2xxx_npiv_fabric_configfs\n"); 2154 } 2155 2156 static int __init tcm_qla2xxx_init(void) 2157 { 2158 int ret; 2159 2160 ret = tcm_qla2xxx_register_configfs(); 2161 if (ret < 0) 2162 return ret; 2163 2164 return 0; 2165 } 2166 2167 static void __exit tcm_qla2xxx_exit(void) 2168 { 2169 tcm_qla2xxx_deregister_configfs(); 2170 } 2171 2172 MODULE_DESCRIPTION("TCM QLA2XXX series NPIV enabled fabric driver"); 2173 MODULE_LICENSE("GPL"); 2174 module_init(tcm_qla2xxx_init); 2175 module_exit(tcm_qla2xxx_exit); 2176