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 static const struct target_core_fabric_ops tcm_qla2xxx_ops; 57 static const struct target_core_fabric_ops tcm_qla2xxx_npiv_ops; 58 59 /* 60 * Parse WWN. 61 * If strict, we require lower-case hex and colon separators to be sure 62 * the name is the same as what would be generated by ft_format_wwn() 63 * so the name and wwn are mapped one-to-one. 64 */ 65 static ssize_t tcm_qla2xxx_parse_wwn(const char *name, u64 *wwn, int strict) 66 { 67 const char *cp; 68 char c; 69 u32 nibble; 70 u32 byte = 0; 71 u32 pos = 0; 72 u32 err; 73 74 *wwn = 0; 75 for (cp = name; cp < &name[TCM_QLA2XXX_NAMELEN - 1]; cp++) { 76 c = *cp; 77 if (c == '\n' && cp[1] == '\0') 78 continue; 79 if (strict && pos++ == 2 && byte++ < 7) { 80 pos = 0; 81 if (c == ':') 82 continue; 83 err = 1; 84 goto fail; 85 } 86 if (c == '\0') { 87 err = 2; 88 if (strict && byte != 8) 89 goto fail; 90 return cp - name; 91 } 92 err = 3; 93 if (isdigit(c)) 94 nibble = c - '0'; 95 else if (isxdigit(c) && (islower(c) || !strict)) 96 nibble = tolower(c) - 'a' + 10; 97 else 98 goto fail; 99 *wwn = (*wwn << 4) | nibble; 100 } 101 err = 4; 102 fail: 103 pr_debug("err %u len %zu pos %u byte %u\n", 104 err, cp - name, pos, byte); 105 return -1; 106 } 107 108 static ssize_t tcm_qla2xxx_format_wwn(char *buf, size_t len, u64 wwn) 109 { 110 u8 b[8]; 111 112 put_unaligned_be64(wwn, b); 113 return snprintf(buf, len, 114 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x", 115 b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7]); 116 } 117 118 static char *tcm_qla2xxx_get_fabric_name(void) 119 { 120 return "qla2xxx"; 121 } 122 123 /* 124 * From drivers/scsi/scsi_transport_fc.c:fc_parse_wwn 125 */ 126 static int tcm_qla2xxx_npiv_extract_wwn(const char *ns, u64 *nm) 127 { 128 unsigned int i, j; 129 u8 wwn[8]; 130 131 memset(wwn, 0, sizeof(wwn)); 132 133 /* Validate and store the new name */ 134 for (i = 0, j = 0; i < 16; i++) { 135 int value; 136 137 value = hex_to_bin(*ns++); 138 if (value >= 0) 139 j = (j << 4) | value; 140 else 141 return -EINVAL; 142 143 if (i % 2) { 144 wwn[i/2] = j & 0xff; 145 j = 0; 146 } 147 } 148 149 *nm = wwn_to_u64(wwn); 150 return 0; 151 } 152 153 /* 154 * This parsing logic follows drivers/scsi/scsi_transport_fc.c: 155 * store_fc_host_vport_create() 156 */ 157 static int tcm_qla2xxx_npiv_parse_wwn( 158 const char *name, 159 size_t count, 160 u64 *wwpn, 161 u64 *wwnn) 162 { 163 unsigned int cnt = count; 164 int rc; 165 166 *wwpn = 0; 167 *wwnn = 0; 168 169 /* count may include a LF at end of string */ 170 if (name[cnt-1] == '\n' || name[cnt-1] == 0) 171 cnt--; 172 173 /* validate we have enough characters for WWPN */ 174 if ((cnt != (16+1+16)) || (name[16] != ':')) 175 return -EINVAL; 176 177 rc = tcm_qla2xxx_npiv_extract_wwn(&name[0], wwpn); 178 if (rc != 0) 179 return rc; 180 181 rc = tcm_qla2xxx_npiv_extract_wwn(&name[17], wwnn); 182 if (rc != 0) 183 return rc; 184 185 return 0; 186 } 187 188 static char *tcm_qla2xxx_npiv_get_fabric_name(void) 189 { 190 return "qla2xxx_npiv"; 191 } 192 193 static u8 tcm_qla2xxx_get_fabric_proto_ident(struct se_portal_group *se_tpg) 194 { 195 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 196 struct tcm_qla2xxx_tpg, se_tpg); 197 struct tcm_qla2xxx_lport *lport = tpg->lport; 198 u8 proto_id; 199 200 switch (lport->lport_proto_id) { 201 case SCSI_PROTOCOL_FCP: 202 default: 203 proto_id = fc_get_fabric_proto_ident(se_tpg); 204 break; 205 } 206 207 return proto_id; 208 } 209 210 static char *tcm_qla2xxx_get_fabric_wwn(struct se_portal_group *se_tpg) 211 { 212 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 213 struct tcm_qla2xxx_tpg, se_tpg); 214 struct tcm_qla2xxx_lport *lport = tpg->lport; 215 216 return lport->lport_naa_name; 217 } 218 219 static u16 tcm_qla2xxx_get_tag(struct se_portal_group *se_tpg) 220 { 221 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 222 struct tcm_qla2xxx_tpg, se_tpg); 223 return tpg->lport_tpgt; 224 } 225 226 static u32 tcm_qla2xxx_get_default_depth(struct se_portal_group *se_tpg) 227 { 228 return 1; 229 } 230 231 static u32 tcm_qla2xxx_get_pr_transport_id( 232 struct se_portal_group *se_tpg, 233 struct se_node_acl *se_nacl, 234 struct t10_pr_registration *pr_reg, 235 int *format_code, 236 unsigned char *buf) 237 { 238 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 239 struct tcm_qla2xxx_tpg, se_tpg); 240 struct tcm_qla2xxx_lport *lport = tpg->lport; 241 int ret = 0; 242 243 switch (lport->lport_proto_id) { 244 case SCSI_PROTOCOL_FCP: 245 default: 246 ret = fc_get_pr_transport_id(se_tpg, se_nacl, pr_reg, 247 format_code, buf); 248 break; 249 } 250 251 return ret; 252 } 253 254 static u32 tcm_qla2xxx_get_pr_transport_id_len( 255 struct se_portal_group *se_tpg, 256 struct se_node_acl *se_nacl, 257 struct t10_pr_registration *pr_reg, 258 int *format_code) 259 { 260 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 261 struct tcm_qla2xxx_tpg, se_tpg); 262 struct tcm_qla2xxx_lport *lport = tpg->lport; 263 int ret = 0; 264 265 switch (lport->lport_proto_id) { 266 case SCSI_PROTOCOL_FCP: 267 default: 268 ret = fc_get_pr_transport_id_len(se_tpg, se_nacl, pr_reg, 269 format_code); 270 break; 271 } 272 273 return ret; 274 } 275 276 static char *tcm_qla2xxx_parse_pr_out_transport_id( 277 struct se_portal_group *se_tpg, 278 const char *buf, 279 u32 *out_tid_len, 280 char **port_nexus_ptr) 281 { 282 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 283 struct tcm_qla2xxx_tpg, se_tpg); 284 struct tcm_qla2xxx_lport *lport = tpg->lport; 285 char *tid = NULL; 286 287 switch (lport->lport_proto_id) { 288 case SCSI_PROTOCOL_FCP: 289 default: 290 tid = fc_parse_pr_out_transport_id(se_tpg, buf, out_tid_len, 291 port_nexus_ptr); 292 break; 293 } 294 295 return tid; 296 } 297 298 static int tcm_qla2xxx_check_demo_mode(struct se_portal_group *se_tpg) 299 { 300 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 301 struct tcm_qla2xxx_tpg, se_tpg); 302 303 return tpg->tpg_attrib.generate_node_acls; 304 } 305 306 static int tcm_qla2xxx_check_demo_mode_cache(struct se_portal_group *se_tpg) 307 { 308 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 309 struct tcm_qla2xxx_tpg, se_tpg); 310 311 return tpg->tpg_attrib.cache_dynamic_acls; 312 } 313 314 static int tcm_qla2xxx_check_demo_write_protect(struct se_portal_group *se_tpg) 315 { 316 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 317 struct tcm_qla2xxx_tpg, se_tpg); 318 319 return tpg->tpg_attrib.demo_mode_write_protect; 320 } 321 322 static int tcm_qla2xxx_check_prod_write_protect(struct se_portal_group *se_tpg) 323 { 324 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 325 struct tcm_qla2xxx_tpg, se_tpg); 326 327 return tpg->tpg_attrib.prod_mode_write_protect; 328 } 329 330 static int tcm_qla2xxx_check_demo_mode_login_only(struct se_portal_group *se_tpg) 331 { 332 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 333 struct tcm_qla2xxx_tpg, se_tpg); 334 335 return tpg->tpg_attrib.demo_mode_login_only; 336 } 337 338 static int tcm_qla2xxx_check_prot_fabric_only(struct se_portal_group *se_tpg) 339 { 340 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 341 struct tcm_qla2xxx_tpg, se_tpg); 342 343 return tpg->tpg_attrib.fabric_prot_type; 344 } 345 346 static struct se_node_acl *tcm_qla2xxx_alloc_fabric_acl( 347 struct se_portal_group *se_tpg) 348 { 349 struct tcm_qla2xxx_nacl *nacl; 350 351 nacl = kzalloc(sizeof(struct tcm_qla2xxx_nacl), GFP_KERNEL); 352 if (!nacl) { 353 pr_err("Unable to allocate struct tcm_qla2xxx_nacl\n"); 354 return NULL; 355 } 356 357 return &nacl->se_node_acl; 358 } 359 360 static void tcm_qla2xxx_release_fabric_acl( 361 struct se_portal_group *se_tpg, 362 struct se_node_acl *se_nacl) 363 { 364 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl, 365 struct tcm_qla2xxx_nacl, se_node_acl); 366 kfree(nacl); 367 } 368 369 static u32 tcm_qla2xxx_tpg_get_inst_index(struct se_portal_group *se_tpg) 370 { 371 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 372 struct tcm_qla2xxx_tpg, se_tpg); 373 374 return tpg->lport_tpgt; 375 } 376 377 static void tcm_qla2xxx_complete_mcmd(struct work_struct *work) 378 { 379 struct qla_tgt_mgmt_cmd *mcmd = container_of(work, 380 struct qla_tgt_mgmt_cmd, free_work); 381 382 transport_generic_free_cmd(&mcmd->se_cmd, 0); 383 } 384 385 /* 386 * Called from qla_target_template->free_mcmd(), and will call 387 * tcm_qla2xxx_release_cmd() via normal struct target_core_fabric_ops 388 * release callback. qla_hw_data->hardware_lock is expected to be held 389 */ 390 static void tcm_qla2xxx_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd) 391 { 392 INIT_WORK(&mcmd->free_work, tcm_qla2xxx_complete_mcmd); 393 queue_work(tcm_qla2xxx_free_wq, &mcmd->free_work); 394 } 395 396 static void tcm_qla2xxx_complete_free(struct work_struct *work) 397 { 398 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 399 400 cmd->cmd_in_wq = 0; 401 402 WARN_ON(cmd->cmd_flags & BIT_16); 403 404 cmd->cmd_flags |= BIT_16; 405 transport_generic_free_cmd(&cmd->se_cmd, 0); 406 } 407 408 /* 409 * Called from qla_target_template->free_cmd(), and will call 410 * tcm_qla2xxx_release_cmd via normal struct target_core_fabric_ops 411 * release callback. qla_hw_data->hardware_lock is expected to be held 412 */ 413 static void tcm_qla2xxx_free_cmd(struct qla_tgt_cmd *cmd) 414 { 415 cmd->cmd_in_wq = 1; 416 INIT_WORK(&cmd->work, tcm_qla2xxx_complete_free); 417 queue_work(tcm_qla2xxx_free_wq, &cmd->work); 418 } 419 420 /* 421 * Called from struct target_core_fabric_ops->check_stop_free() context 422 */ 423 static int tcm_qla2xxx_check_stop_free(struct se_cmd *se_cmd) 424 { 425 struct qla_tgt_cmd *cmd; 426 427 if ((se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) == 0) { 428 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd); 429 cmd->cmd_flags |= BIT_14; 430 } 431 432 return target_put_sess_cmd(se_cmd->se_sess, se_cmd); 433 } 434 435 /* tcm_qla2xxx_release_cmd - Callback from TCM Core to release underlying 436 * fabric descriptor @se_cmd command to release 437 */ 438 static void tcm_qla2xxx_release_cmd(struct se_cmd *se_cmd) 439 { 440 struct qla_tgt_cmd *cmd; 441 442 if (se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) { 443 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd, 444 struct qla_tgt_mgmt_cmd, se_cmd); 445 qlt_free_mcmd(mcmd); 446 return; 447 } 448 449 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd); 450 qlt_free_cmd(cmd); 451 } 452 453 static int tcm_qla2xxx_shutdown_session(struct se_session *se_sess) 454 { 455 struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr; 456 struct scsi_qla_host *vha; 457 unsigned long flags; 458 459 BUG_ON(!sess); 460 vha = sess->vha; 461 462 spin_lock_irqsave(&vha->hw->hardware_lock, flags); 463 target_sess_cmd_list_set_waiting(se_sess); 464 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags); 465 466 return 1; 467 } 468 469 static void tcm_qla2xxx_close_session(struct se_session *se_sess) 470 { 471 struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr; 472 struct scsi_qla_host *vha; 473 unsigned long flags; 474 475 BUG_ON(!sess); 476 vha = sess->vha; 477 478 spin_lock_irqsave(&vha->hw->hardware_lock, flags); 479 qlt_unreg_sess(sess); 480 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags); 481 } 482 483 static u32 tcm_qla2xxx_sess_get_index(struct se_session *se_sess) 484 { 485 return 0; 486 } 487 488 static int tcm_qla2xxx_write_pending(struct se_cmd *se_cmd) 489 { 490 struct qla_tgt_cmd *cmd = container_of(se_cmd, 491 struct qla_tgt_cmd, se_cmd); 492 493 cmd->bufflen = se_cmd->data_length; 494 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd); 495 496 cmd->sg_cnt = se_cmd->t_data_nents; 497 cmd->sg = se_cmd->t_data_sg; 498 499 cmd->prot_sg_cnt = se_cmd->t_prot_nents; 500 cmd->prot_sg = se_cmd->t_prot_sg; 501 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size; 502 se_cmd->pi_err = 0; 503 504 /* 505 * qla_target.c:qlt_rdy_to_xfer() will call pci_map_sg() to setup 506 * the SGL mappings into PCIe memory for incoming FCP WRITE data. 507 */ 508 return qlt_rdy_to_xfer(cmd); 509 } 510 511 static int tcm_qla2xxx_write_pending_status(struct se_cmd *se_cmd) 512 { 513 unsigned long flags; 514 /* 515 * Check for WRITE_PENDING status to determine if we need to wait for 516 * CTIO aborts to be posted via hardware in tcm_qla2xxx_handle_data(). 517 */ 518 spin_lock_irqsave(&se_cmd->t_state_lock, flags); 519 if (se_cmd->t_state == TRANSPORT_WRITE_PENDING || 520 se_cmd->t_state == TRANSPORT_COMPLETE_QF_WP) { 521 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags); 522 wait_for_completion_timeout(&se_cmd->t_transport_stop_comp, 523 3000); 524 return 0; 525 } 526 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags); 527 528 return 0; 529 } 530 531 static void tcm_qla2xxx_set_default_node_attrs(struct se_node_acl *nacl) 532 { 533 return; 534 } 535 536 static u32 tcm_qla2xxx_get_task_tag(struct se_cmd *se_cmd) 537 { 538 struct qla_tgt_cmd *cmd; 539 540 /* check for task mgmt cmd */ 541 if (se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) 542 return 0xffffffff; 543 544 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd); 545 546 return cmd->tag; 547 } 548 549 static int tcm_qla2xxx_get_cmd_state(struct se_cmd *se_cmd) 550 { 551 return 0; 552 } 553 554 /* 555 * Called from process context in qla_target.c:qlt_do_work() code 556 */ 557 static int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd, 558 unsigned char *cdb, uint32_t data_length, int fcp_task_attr, 559 int data_dir, int bidi) 560 { 561 struct se_cmd *se_cmd = &cmd->se_cmd; 562 struct se_session *se_sess; 563 struct qla_tgt_sess *sess; 564 int flags = TARGET_SCF_ACK_KREF; 565 566 if (bidi) 567 flags |= TARGET_SCF_BIDI_OP; 568 569 sess = cmd->sess; 570 if (!sess) { 571 pr_err("Unable to locate struct qla_tgt_sess from qla_tgt_cmd\n"); 572 return -EINVAL; 573 } 574 575 se_sess = sess->se_sess; 576 if (!se_sess) { 577 pr_err("Unable to locate active struct se_session\n"); 578 return -EINVAL; 579 } 580 581 return target_submit_cmd(se_cmd, se_sess, cdb, &cmd->sense_buffer[0], 582 cmd->unpacked_lun, data_length, fcp_task_attr, 583 data_dir, flags); 584 } 585 586 static void tcm_qla2xxx_handle_data_work(struct work_struct *work) 587 { 588 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 589 590 /* 591 * Ensure that the complete FCP WRITE payload has been received. 592 * Otherwise return an exception via CHECK_CONDITION status. 593 */ 594 cmd->cmd_in_wq = 0; 595 cmd->cmd_flags |= BIT_11; 596 if (!cmd->write_data_transferred) { 597 /* 598 * Check if se_cmd has already been aborted via LUN_RESET, and 599 * waiting upon completion in tcm_qla2xxx_write_pending_status() 600 */ 601 if (cmd->se_cmd.transport_state & CMD_T_ABORTED) { 602 complete(&cmd->se_cmd.t_transport_stop_comp); 603 return; 604 } 605 606 if (cmd->se_cmd.pi_err) 607 transport_generic_request_failure(&cmd->se_cmd, 608 cmd->se_cmd.pi_err); 609 else 610 transport_generic_request_failure(&cmd->se_cmd, 611 TCM_CHECK_CONDITION_ABORT_CMD); 612 613 return; 614 } 615 616 return target_execute_cmd(&cmd->se_cmd); 617 } 618 619 /* 620 * Called from qla_target.c:qlt_do_ctio_completion() 621 */ 622 static void tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd) 623 { 624 cmd->cmd_flags |= BIT_10; 625 cmd->cmd_in_wq = 1; 626 INIT_WORK(&cmd->work, tcm_qla2xxx_handle_data_work); 627 queue_work(tcm_qla2xxx_free_wq, &cmd->work); 628 } 629 630 static void tcm_qla2xxx_handle_dif_work(struct work_struct *work) 631 { 632 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 633 634 /* take an extra kref to prevent cmd free too early. 635 * need to wait for SCSI status/check condition to 636 * finish responding generate by transport_generic_request_failure. 637 */ 638 kref_get(&cmd->se_cmd.cmd_kref); 639 transport_generic_request_failure(&cmd->se_cmd, cmd->se_cmd.pi_err); 640 } 641 642 /* 643 * Called from qla_target.c:qlt_do_ctio_completion() 644 */ 645 static void tcm_qla2xxx_handle_dif_err(struct qla_tgt_cmd *cmd) 646 { 647 INIT_WORK(&cmd->work, tcm_qla2xxx_handle_dif_work); 648 queue_work(tcm_qla2xxx_free_wq, &cmd->work); 649 } 650 651 /* 652 * Called from qla_target.c:qlt_issue_task_mgmt() 653 */ 654 static int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *mcmd, uint32_t lun, 655 uint8_t tmr_func, uint32_t tag) 656 { 657 struct qla_tgt_sess *sess = mcmd->sess; 658 struct se_cmd *se_cmd = &mcmd->se_cmd; 659 660 return target_submit_tmr(se_cmd, sess->se_sess, NULL, lun, mcmd, 661 tmr_func, GFP_ATOMIC, tag, TARGET_SCF_ACK_KREF); 662 } 663 664 static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd) 665 { 666 struct qla_tgt_cmd *cmd = container_of(se_cmd, 667 struct qla_tgt_cmd, se_cmd); 668 669 cmd->cmd_flags |= BIT_4; 670 cmd->bufflen = se_cmd->data_length; 671 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd); 672 cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED); 673 674 cmd->sg_cnt = se_cmd->t_data_nents; 675 cmd->sg = se_cmd->t_data_sg; 676 cmd->offset = 0; 677 cmd->cmd_flags |= BIT_3; 678 679 cmd->prot_sg_cnt = se_cmd->t_prot_nents; 680 cmd->prot_sg = se_cmd->t_prot_sg; 681 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size; 682 se_cmd->pi_err = 0; 683 684 /* 685 * Now queue completed DATA_IN the qla2xxx LLD and response ring 686 */ 687 return qlt_xmit_response(cmd, QLA_TGT_XMIT_DATA|QLA_TGT_XMIT_STATUS, 688 se_cmd->scsi_status); 689 } 690 691 static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd) 692 { 693 struct qla_tgt_cmd *cmd = container_of(se_cmd, 694 struct qla_tgt_cmd, se_cmd); 695 int xmit_type = QLA_TGT_XMIT_STATUS; 696 697 cmd->bufflen = se_cmd->data_length; 698 cmd->sg = NULL; 699 cmd->sg_cnt = 0; 700 cmd->offset = 0; 701 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd); 702 cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED); 703 if (cmd->cmd_flags & BIT_5) { 704 pr_crit("Bit_5 already set for cmd = %p.\n", cmd); 705 dump_stack(); 706 } 707 cmd->cmd_flags |= BIT_5; 708 709 if (se_cmd->data_direction == DMA_FROM_DEVICE) { 710 /* 711 * For FCP_READ with CHECK_CONDITION status, clear cmd->bufflen 712 * for qla_tgt_xmit_response LLD code 713 */ 714 if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) { 715 se_cmd->se_cmd_flags &= ~SCF_OVERFLOW_BIT; 716 se_cmd->residual_count = 0; 717 } 718 se_cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT; 719 se_cmd->residual_count += se_cmd->data_length; 720 721 cmd->bufflen = 0; 722 } 723 /* 724 * Now queue status response to qla2xxx LLD code and response ring 725 */ 726 return qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status); 727 } 728 729 static void tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd) 730 { 731 struct se_tmr_req *se_tmr = se_cmd->se_tmr_req; 732 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd, 733 struct qla_tgt_mgmt_cmd, se_cmd); 734 735 pr_debug("queue_tm_rsp: mcmd: %p func: 0x%02x response: 0x%02x\n", 736 mcmd, se_tmr->function, se_tmr->response); 737 /* 738 * Do translation between TCM TM response codes and 739 * QLA2xxx FC TM response codes. 740 */ 741 switch (se_tmr->response) { 742 case TMR_FUNCTION_COMPLETE: 743 mcmd->fc_tm_rsp = FC_TM_SUCCESS; 744 break; 745 case TMR_TASK_DOES_NOT_EXIST: 746 mcmd->fc_tm_rsp = FC_TM_BAD_CMD; 747 break; 748 case TMR_FUNCTION_REJECTED: 749 mcmd->fc_tm_rsp = FC_TM_REJECT; 750 break; 751 case TMR_LUN_DOES_NOT_EXIST: 752 default: 753 mcmd->fc_tm_rsp = FC_TM_FAILED; 754 break; 755 } 756 /* 757 * Queue the TM response to QLA2xxx LLD to build a 758 * CTIO response packet. 759 */ 760 qlt_xmit_tm_rsp(mcmd); 761 } 762 763 static void tcm_qla2xxx_aborted_task(struct se_cmd *se_cmd) 764 { 765 struct qla_tgt_cmd *cmd = container_of(se_cmd, 766 struct qla_tgt_cmd, se_cmd); 767 struct scsi_qla_host *vha = cmd->vha; 768 struct qla_hw_data *ha = vha->hw; 769 770 if (!cmd->sg_mapped) 771 return; 772 773 pci_unmap_sg(ha->pdev, cmd->sg, cmd->sg_cnt, cmd->dma_data_direction); 774 cmd->sg_mapped = 0; 775 } 776 777 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *, 778 struct tcm_qla2xxx_nacl *, struct qla_tgt_sess *); 779 /* 780 * Expected to be called with struct qla_hw_data->hardware_lock held 781 */ 782 static void tcm_qla2xxx_clear_nacl_from_fcport_map(struct qla_tgt_sess *sess) 783 { 784 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl; 785 struct se_portal_group *se_tpg = se_nacl->se_tpg; 786 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn; 787 struct tcm_qla2xxx_lport *lport = container_of(se_wwn, 788 struct tcm_qla2xxx_lport, lport_wwn); 789 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl, 790 struct tcm_qla2xxx_nacl, se_node_acl); 791 void *node; 792 793 pr_debug("fc_rport domain: port_id 0x%06x\n", nacl->nport_id); 794 795 node = btree_remove32(&lport->lport_fcport_map, nacl->nport_id); 796 if (WARN_ON(node && (node != se_nacl))) { 797 /* 798 * The nacl no longer matches what we think it should be. 799 * Most likely a new dynamic acl has been added while 800 * someone dropped the hardware lock. It clearly is a 801 * bug elsewhere, but this bit can't make things worse. 802 */ 803 btree_insert32(&lport->lport_fcport_map, nacl->nport_id, 804 node, GFP_ATOMIC); 805 } 806 807 pr_debug("Removed from fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%06x\n", 808 se_nacl, nacl->nport_wwnn, nacl->nport_id); 809 /* 810 * Now clear the se_nacl and session pointers from our HW lport lookup 811 * table mapping for this initiator's fabric S_ID and LOOP_ID entries. 812 * 813 * This is done ahead of callbacks into tcm_qla2xxx_free_session() -> 814 * target_wait_for_sess_cmds() before the session waits for outstanding 815 * I/O to complete, to avoid a race between session shutdown execution 816 * and incoming ATIOs or TMRs picking up a stale se_node_act reference. 817 */ 818 tcm_qla2xxx_clear_sess_lookup(lport, nacl, sess); 819 } 820 821 static void tcm_qla2xxx_release_session(struct kref *kref) 822 { 823 struct se_session *se_sess = container_of(kref, 824 struct se_session, sess_kref); 825 826 qlt_unreg_sess(se_sess->fabric_sess_ptr); 827 } 828 829 static void tcm_qla2xxx_put_session(struct se_session *se_sess) 830 { 831 struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr; 832 struct qla_hw_data *ha = sess->vha->hw; 833 unsigned long flags; 834 835 spin_lock_irqsave(&ha->hardware_lock, flags); 836 kref_put(&se_sess->sess_kref, tcm_qla2xxx_release_session); 837 spin_unlock_irqrestore(&ha->hardware_lock, flags); 838 } 839 840 static void tcm_qla2xxx_put_sess(struct qla_tgt_sess *sess) 841 { 842 if (!sess) 843 return; 844 845 assert_spin_locked(&sess->vha->hw->hardware_lock); 846 kref_put(&sess->se_sess->sess_kref, tcm_qla2xxx_release_session); 847 } 848 849 static void tcm_qla2xxx_shutdown_sess(struct qla_tgt_sess *sess) 850 { 851 assert_spin_locked(&sess->vha->hw->hardware_lock); 852 target_sess_cmd_list_set_waiting(sess->se_sess); 853 } 854 855 static struct se_node_acl *tcm_qla2xxx_make_nodeacl( 856 struct se_portal_group *se_tpg, 857 struct config_group *group, 858 const char *name) 859 { 860 struct se_node_acl *se_nacl, *se_nacl_new; 861 struct tcm_qla2xxx_nacl *nacl; 862 u64 wwnn; 863 u32 qla2xxx_nexus_depth; 864 865 if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0) 866 return ERR_PTR(-EINVAL); 867 868 se_nacl_new = tcm_qla2xxx_alloc_fabric_acl(se_tpg); 869 if (!se_nacl_new) 870 return ERR_PTR(-ENOMEM); 871 /* #warning FIXME: Hardcoded qla2xxx_nexus depth in tcm_qla2xxx_make_nodeacl */ 872 qla2xxx_nexus_depth = 1; 873 874 /* 875 * se_nacl_new may be released by core_tpg_add_initiator_node_acl() 876 * when converting a NodeACL from demo mode -> explict 877 */ 878 se_nacl = core_tpg_add_initiator_node_acl(se_tpg, se_nacl_new, 879 name, qla2xxx_nexus_depth); 880 if (IS_ERR(se_nacl)) { 881 tcm_qla2xxx_release_fabric_acl(se_tpg, se_nacl_new); 882 return se_nacl; 883 } 884 /* 885 * Locate our struct tcm_qla2xxx_nacl and set the FC Nport WWPN 886 */ 887 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 888 nacl->nport_wwnn = wwnn; 889 tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn); 890 891 return se_nacl; 892 } 893 894 static void tcm_qla2xxx_drop_nodeacl(struct se_node_acl *se_acl) 895 { 896 struct se_portal_group *se_tpg = se_acl->se_tpg; 897 struct tcm_qla2xxx_nacl *nacl = container_of(se_acl, 898 struct tcm_qla2xxx_nacl, se_node_acl); 899 900 core_tpg_del_initiator_node_acl(se_tpg, se_acl, 1); 901 kfree(nacl); 902 } 903 904 /* Start items for tcm_qla2xxx_tpg_attrib_cit */ 905 906 #define DEF_QLA_TPG_ATTRIB(name) \ 907 \ 908 static ssize_t tcm_qla2xxx_tpg_attrib_show_##name( \ 909 struct se_portal_group *se_tpg, \ 910 char *page) \ 911 { \ 912 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \ 913 struct tcm_qla2xxx_tpg, se_tpg); \ 914 \ 915 return sprintf(page, "%u\n", tpg->tpg_attrib.name); \ 916 } \ 917 \ 918 static ssize_t tcm_qla2xxx_tpg_attrib_store_##name( \ 919 struct se_portal_group *se_tpg, \ 920 const char *page, \ 921 size_t count) \ 922 { \ 923 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \ 924 struct tcm_qla2xxx_tpg, se_tpg); \ 925 unsigned long val; \ 926 int ret; \ 927 \ 928 ret = kstrtoul(page, 0, &val); \ 929 if (ret < 0) { \ 930 pr_err("kstrtoul() failed with" \ 931 " ret: %d\n", ret); \ 932 return -EINVAL; \ 933 } \ 934 ret = tcm_qla2xxx_set_attrib_##name(tpg, val); \ 935 \ 936 return (!ret) ? count : -EINVAL; \ 937 } 938 939 #define DEF_QLA_TPG_ATTR_BOOL(_name) \ 940 \ 941 static int tcm_qla2xxx_set_attrib_##_name( \ 942 struct tcm_qla2xxx_tpg *tpg, \ 943 unsigned long val) \ 944 { \ 945 struct tcm_qla2xxx_tpg_attrib *a = &tpg->tpg_attrib; \ 946 \ 947 if ((val != 0) && (val != 1)) { \ 948 pr_err("Illegal boolean value %lu\n", val); \ 949 return -EINVAL; \ 950 } \ 951 \ 952 a->_name = val; \ 953 return 0; \ 954 } 955 956 #define QLA_TPG_ATTR(_name, _mode) \ 957 TF_TPG_ATTRIB_ATTR(tcm_qla2xxx, _name, _mode); 958 959 /* 960 * Define tcm_qla2xxx_tpg_attrib_s_generate_node_acls 961 */ 962 DEF_QLA_TPG_ATTR_BOOL(generate_node_acls); 963 DEF_QLA_TPG_ATTRIB(generate_node_acls); 964 QLA_TPG_ATTR(generate_node_acls, S_IRUGO | S_IWUSR); 965 966 /* 967 Define tcm_qla2xxx_attrib_s_cache_dynamic_acls 968 */ 969 DEF_QLA_TPG_ATTR_BOOL(cache_dynamic_acls); 970 DEF_QLA_TPG_ATTRIB(cache_dynamic_acls); 971 QLA_TPG_ATTR(cache_dynamic_acls, S_IRUGO | S_IWUSR); 972 973 /* 974 * Define tcm_qla2xxx_tpg_attrib_s_demo_mode_write_protect 975 */ 976 DEF_QLA_TPG_ATTR_BOOL(demo_mode_write_protect); 977 DEF_QLA_TPG_ATTRIB(demo_mode_write_protect); 978 QLA_TPG_ATTR(demo_mode_write_protect, S_IRUGO | S_IWUSR); 979 980 /* 981 * Define tcm_qla2xxx_tpg_attrib_s_prod_mode_write_protect 982 */ 983 DEF_QLA_TPG_ATTR_BOOL(prod_mode_write_protect); 984 DEF_QLA_TPG_ATTRIB(prod_mode_write_protect); 985 QLA_TPG_ATTR(prod_mode_write_protect, S_IRUGO | S_IWUSR); 986 987 /* 988 * Define tcm_qla2xxx_tpg_attrib_s_demo_mode_login_only 989 */ 990 DEF_QLA_TPG_ATTR_BOOL(demo_mode_login_only); 991 DEF_QLA_TPG_ATTRIB(demo_mode_login_only); 992 QLA_TPG_ATTR(demo_mode_login_only, S_IRUGO | S_IWUSR); 993 994 static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = { 995 &tcm_qla2xxx_tpg_attrib_generate_node_acls.attr, 996 &tcm_qla2xxx_tpg_attrib_cache_dynamic_acls.attr, 997 &tcm_qla2xxx_tpg_attrib_demo_mode_write_protect.attr, 998 &tcm_qla2xxx_tpg_attrib_prod_mode_write_protect.attr, 999 &tcm_qla2xxx_tpg_attrib_demo_mode_login_only.attr, 1000 NULL, 1001 }; 1002 1003 /* End items for tcm_qla2xxx_tpg_attrib_cit */ 1004 1005 static ssize_t tcm_qla2xxx_tpg_show_enable( 1006 struct se_portal_group *se_tpg, 1007 char *page) 1008 { 1009 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1010 struct tcm_qla2xxx_tpg, se_tpg); 1011 1012 return snprintf(page, PAGE_SIZE, "%d\n", 1013 atomic_read(&tpg->lport_tpg_enabled)); 1014 } 1015 1016 static void tcm_qla2xxx_depend_tpg(struct work_struct *work) 1017 { 1018 struct tcm_qla2xxx_tpg *base_tpg = container_of(work, 1019 struct tcm_qla2xxx_tpg, tpg_base_work); 1020 struct se_portal_group *se_tpg = &base_tpg->se_tpg; 1021 struct scsi_qla_host *base_vha = base_tpg->lport->qla_vha; 1022 1023 if (!target_depend_item(&se_tpg->tpg_group.cg_item)) { 1024 atomic_set(&base_tpg->lport_tpg_enabled, 1); 1025 qlt_enable_vha(base_vha); 1026 } 1027 complete(&base_tpg->tpg_base_comp); 1028 } 1029 1030 static void tcm_qla2xxx_undepend_tpg(struct work_struct *work) 1031 { 1032 struct tcm_qla2xxx_tpg *base_tpg = container_of(work, 1033 struct tcm_qla2xxx_tpg, tpg_base_work); 1034 struct se_portal_group *se_tpg = &base_tpg->se_tpg; 1035 struct scsi_qla_host *base_vha = base_tpg->lport->qla_vha; 1036 1037 if (!qlt_stop_phase1(base_vha->vha_tgt.qla_tgt)) { 1038 atomic_set(&base_tpg->lport_tpg_enabled, 0); 1039 target_undepend_item(&se_tpg->tpg_group.cg_item); 1040 } 1041 complete(&base_tpg->tpg_base_comp); 1042 } 1043 1044 static ssize_t tcm_qla2xxx_tpg_store_enable( 1045 struct se_portal_group *se_tpg, 1046 const char *page, 1047 size_t count) 1048 { 1049 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1050 struct tcm_qla2xxx_tpg, se_tpg); 1051 unsigned long op; 1052 int rc; 1053 1054 rc = kstrtoul(page, 0, &op); 1055 if (rc < 0) { 1056 pr_err("kstrtoul() returned %d\n", rc); 1057 return -EINVAL; 1058 } 1059 if ((op != 1) && (op != 0)) { 1060 pr_err("Illegal value for tpg_enable: %lu\n", op); 1061 return -EINVAL; 1062 } 1063 if (op) { 1064 if (atomic_read(&tpg->lport_tpg_enabled)) 1065 return -EEXIST; 1066 1067 INIT_WORK(&tpg->tpg_base_work, tcm_qla2xxx_depend_tpg); 1068 } else { 1069 if (!atomic_read(&tpg->lport_tpg_enabled)) 1070 return count; 1071 1072 INIT_WORK(&tpg->tpg_base_work, tcm_qla2xxx_undepend_tpg); 1073 } 1074 init_completion(&tpg->tpg_base_comp); 1075 schedule_work(&tpg->tpg_base_work); 1076 wait_for_completion(&tpg->tpg_base_comp); 1077 1078 if (op) { 1079 if (!atomic_read(&tpg->lport_tpg_enabled)) 1080 return -ENODEV; 1081 } else { 1082 if (atomic_read(&tpg->lport_tpg_enabled)) 1083 return -EPERM; 1084 } 1085 return count; 1086 } 1087 1088 TF_TPG_BASE_ATTR(tcm_qla2xxx, enable, S_IRUGO | S_IWUSR); 1089 1090 static ssize_t tcm_qla2xxx_tpg_show_dynamic_sessions( 1091 struct se_portal_group *se_tpg, 1092 char *page) 1093 { 1094 return target_show_dynamic_sessions(se_tpg, page); 1095 } 1096 1097 TF_TPG_BASE_ATTR_RO(tcm_qla2xxx, dynamic_sessions); 1098 1099 static ssize_t tcm_qla2xxx_tpg_store_fabric_prot_type( 1100 struct se_portal_group *se_tpg, 1101 const char *page, 1102 size_t count) 1103 { 1104 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1105 struct tcm_qla2xxx_tpg, se_tpg); 1106 unsigned long val; 1107 int ret = kstrtoul(page, 0, &val); 1108 1109 if (ret) { 1110 pr_err("kstrtoul() returned %d for fabric_prot_type\n", ret); 1111 return ret; 1112 } 1113 if (val != 0 && val != 1 && val != 3) { 1114 pr_err("Invalid qla2xxx fabric_prot_type: %lu\n", val); 1115 return -EINVAL; 1116 } 1117 tpg->tpg_attrib.fabric_prot_type = val; 1118 1119 return count; 1120 } 1121 1122 static ssize_t tcm_qla2xxx_tpg_show_fabric_prot_type( 1123 struct se_portal_group *se_tpg, 1124 char *page) 1125 { 1126 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1127 struct tcm_qla2xxx_tpg, se_tpg); 1128 1129 return sprintf(page, "%d\n", tpg->tpg_attrib.fabric_prot_type); 1130 } 1131 TF_TPG_BASE_ATTR(tcm_qla2xxx, fabric_prot_type, S_IRUGO | S_IWUSR); 1132 1133 static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = { 1134 &tcm_qla2xxx_tpg_enable.attr, 1135 &tcm_qla2xxx_tpg_dynamic_sessions.attr, 1136 &tcm_qla2xxx_tpg_fabric_prot_type.attr, 1137 NULL, 1138 }; 1139 1140 static struct se_portal_group *tcm_qla2xxx_make_tpg( 1141 struct se_wwn *wwn, 1142 struct config_group *group, 1143 const char *name) 1144 { 1145 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1146 struct tcm_qla2xxx_lport, lport_wwn); 1147 struct tcm_qla2xxx_tpg *tpg; 1148 unsigned long tpgt; 1149 int ret; 1150 1151 if (strstr(name, "tpgt_") != name) 1152 return ERR_PTR(-EINVAL); 1153 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX) 1154 return ERR_PTR(-EINVAL); 1155 1156 if ((tpgt != 1)) { 1157 pr_err("In non NPIV mode, a single TPG=1 is used for HW port mappings\n"); 1158 return ERR_PTR(-ENOSYS); 1159 } 1160 1161 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL); 1162 if (!tpg) { 1163 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n"); 1164 return ERR_PTR(-ENOMEM); 1165 } 1166 tpg->lport = lport; 1167 tpg->lport_tpgt = tpgt; 1168 /* 1169 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic 1170 * NodeACLs 1171 */ 1172 tpg->tpg_attrib.generate_node_acls = 1; 1173 tpg->tpg_attrib.demo_mode_write_protect = 1; 1174 tpg->tpg_attrib.cache_dynamic_acls = 1; 1175 tpg->tpg_attrib.demo_mode_login_only = 1; 1176 1177 ret = core_tpg_register(&tcm_qla2xxx_ops, wwn, 1178 &tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL); 1179 if (ret < 0) { 1180 kfree(tpg); 1181 return NULL; 1182 } 1183 1184 lport->tpg_1 = tpg; 1185 1186 return &tpg->se_tpg; 1187 } 1188 1189 static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg) 1190 { 1191 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1192 struct tcm_qla2xxx_tpg, se_tpg); 1193 struct tcm_qla2xxx_lport *lport = tpg->lport; 1194 struct scsi_qla_host *vha = lport->qla_vha; 1195 /* 1196 * Call into qla2x_target.c LLD logic to shutdown the active 1197 * FC Nexuses and disable target mode operation for this qla_hw_data 1198 */ 1199 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stop) 1200 qlt_stop_phase1(vha->vha_tgt.qla_tgt); 1201 1202 core_tpg_deregister(se_tpg); 1203 /* 1204 * Clear local TPG=1 pointer for non NPIV mode. 1205 */ 1206 lport->tpg_1 = NULL; 1207 kfree(tpg); 1208 } 1209 1210 static ssize_t tcm_qla2xxx_npiv_tpg_show_enable( 1211 struct se_portal_group *se_tpg, 1212 char *page) 1213 { 1214 return tcm_qla2xxx_tpg_show_enable(se_tpg, page); 1215 } 1216 1217 static ssize_t tcm_qla2xxx_npiv_tpg_store_enable( 1218 struct se_portal_group *se_tpg, 1219 const char *page, 1220 size_t count) 1221 { 1222 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn; 1223 struct tcm_qla2xxx_lport *lport = container_of(se_wwn, 1224 struct tcm_qla2xxx_lport, lport_wwn); 1225 struct scsi_qla_host *vha = lport->qla_vha; 1226 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1227 struct tcm_qla2xxx_tpg, se_tpg); 1228 unsigned long op; 1229 int rc; 1230 1231 rc = kstrtoul(page, 0, &op); 1232 if (rc < 0) { 1233 pr_err("kstrtoul() returned %d\n", rc); 1234 return -EINVAL; 1235 } 1236 if ((op != 1) && (op != 0)) { 1237 pr_err("Illegal value for tpg_enable: %lu\n", op); 1238 return -EINVAL; 1239 } 1240 if (op) { 1241 if (atomic_read(&tpg->lport_tpg_enabled)) 1242 return -EEXIST; 1243 1244 atomic_set(&tpg->lport_tpg_enabled, 1); 1245 qlt_enable_vha(vha); 1246 } else { 1247 if (!atomic_read(&tpg->lport_tpg_enabled)) 1248 return count; 1249 1250 atomic_set(&tpg->lport_tpg_enabled, 0); 1251 qlt_stop_phase1(vha->vha_tgt.qla_tgt); 1252 } 1253 1254 return count; 1255 } 1256 1257 TF_TPG_BASE_ATTR(tcm_qla2xxx_npiv, enable, S_IRUGO | S_IWUSR); 1258 1259 static struct configfs_attribute *tcm_qla2xxx_npiv_tpg_attrs[] = { 1260 &tcm_qla2xxx_npiv_tpg_enable.attr, 1261 NULL, 1262 }; 1263 1264 static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg( 1265 struct se_wwn *wwn, 1266 struct config_group *group, 1267 const char *name) 1268 { 1269 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1270 struct tcm_qla2xxx_lport, lport_wwn); 1271 struct tcm_qla2xxx_tpg *tpg; 1272 unsigned long tpgt; 1273 int ret; 1274 1275 if (strstr(name, "tpgt_") != name) 1276 return ERR_PTR(-EINVAL); 1277 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX) 1278 return ERR_PTR(-EINVAL); 1279 1280 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL); 1281 if (!tpg) { 1282 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n"); 1283 return ERR_PTR(-ENOMEM); 1284 } 1285 tpg->lport = lport; 1286 tpg->lport_tpgt = tpgt; 1287 1288 /* 1289 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic 1290 * NodeACLs 1291 */ 1292 tpg->tpg_attrib.generate_node_acls = 1; 1293 tpg->tpg_attrib.demo_mode_write_protect = 1; 1294 tpg->tpg_attrib.cache_dynamic_acls = 1; 1295 tpg->tpg_attrib.demo_mode_login_only = 1; 1296 1297 ret = core_tpg_register(&tcm_qla2xxx_npiv_ops, wwn, 1298 &tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL); 1299 if (ret < 0) { 1300 kfree(tpg); 1301 return NULL; 1302 } 1303 lport->tpg_1 = tpg; 1304 return &tpg->se_tpg; 1305 } 1306 1307 /* 1308 * Expected to be called with struct qla_hw_data->hardware_lock held 1309 */ 1310 static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_s_id( 1311 scsi_qla_host_t *vha, 1312 const uint8_t *s_id) 1313 { 1314 struct tcm_qla2xxx_lport *lport; 1315 struct se_node_acl *se_nacl; 1316 struct tcm_qla2xxx_nacl *nacl; 1317 u32 key; 1318 1319 lport = vha->vha_tgt.target_lport_ptr; 1320 if (!lport) { 1321 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1322 dump_stack(); 1323 return NULL; 1324 } 1325 1326 key = (((unsigned long)s_id[0] << 16) | 1327 ((unsigned long)s_id[1] << 8) | 1328 (unsigned long)s_id[2]); 1329 pr_debug("find_sess_by_s_id: 0x%06x\n", key); 1330 1331 se_nacl = btree_lookup32(&lport->lport_fcport_map, key); 1332 if (!se_nacl) { 1333 pr_debug("Unable to locate s_id: 0x%06x\n", key); 1334 return NULL; 1335 } 1336 pr_debug("find_sess_by_s_id: located se_nacl: %p, initiatorname: %s\n", 1337 se_nacl, se_nacl->initiatorname); 1338 1339 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1340 if (!nacl->qla_tgt_sess) { 1341 pr_err("Unable to locate struct qla_tgt_sess\n"); 1342 return NULL; 1343 } 1344 1345 return nacl->qla_tgt_sess; 1346 } 1347 1348 /* 1349 * Expected to be called with struct qla_hw_data->hardware_lock held 1350 */ 1351 static void tcm_qla2xxx_set_sess_by_s_id( 1352 struct tcm_qla2xxx_lport *lport, 1353 struct se_node_acl *new_se_nacl, 1354 struct tcm_qla2xxx_nacl *nacl, 1355 struct se_session *se_sess, 1356 struct qla_tgt_sess *qla_tgt_sess, 1357 uint8_t *s_id) 1358 { 1359 u32 key; 1360 void *slot; 1361 int rc; 1362 1363 key = (((unsigned long)s_id[0] << 16) | 1364 ((unsigned long)s_id[1] << 8) | 1365 (unsigned long)s_id[2]); 1366 pr_debug("set_sess_by_s_id: %06x\n", key); 1367 1368 slot = btree_lookup32(&lport->lport_fcport_map, key); 1369 if (!slot) { 1370 if (new_se_nacl) { 1371 pr_debug("Setting up new fc_port entry to new_se_nacl\n"); 1372 nacl->nport_id = key; 1373 rc = btree_insert32(&lport->lport_fcport_map, key, 1374 new_se_nacl, GFP_ATOMIC); 1375 if (rc) 1376 printk(KERN_ERR "Unable to insert s_id into fcport_map: %06x\n", 1377 (int)key); 1378 } else { 1379 pr_debug("Wiping nonexisting fc_port entry\n"); 1380 } 1381 1382 qla_tgt_sess->se_sess = se_sess; 1383 nacl->qla_tgt_sess = qla_tgt_sess; 1384 return; 1385 } 1386 1387 if (nacl->qla_tgt_sess) { 1388 if (new_se_nacl == NULL) { 1389 pr_debug("Clearing existing nacl->qla_tgt_sess and fc_port entry\n"); 1390 btree_remove32(&lport->lport_fcport_map, key); 1391 nacl->qla_tgt_sess = NULL; 1392 return; 1393 } 1394 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_port entry\n"); 1395 btree_update32(&lport->lport_fcport_map, key, new_se_nacl); 1396 qla_tgt_sess->se_sess = se_sess; 1397 nacl->qla_tgt_sess = qla_tgt_sess; 1398 return; 1399 } 1400 1401 if (new_se_nacl == NULL) { 1402 pr_debug("Clearing existing fc_port entry\n"); 1403 btree_remove32(&lport->lport_fcport_map, key); 1404 return; 1405 } 1406 1407 pr_debug("Replacing existing fc_port entry w/o active nacl->qla_tgt_sess\n"); 1408 btree_update32(&lport->lport_fcport_map, key, new_se_nacl); 1409 qla_tgt_sess->se_sess = se_sess; 1410 nacl->qla_tgt_sess = qla_tgt_sess; 1411 1412 pr_debug("Setup nacl->qla_tgt_sess %p by s_id for se_nacl: %p, initiatorname: %s\n", 1413 nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname); 1414 } 1415 1416 /* 1417 * Expected to be called with struct qla_hw_data->hardware_lock held 1418 */ 1419 static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_loop_id( 1420 scsi_qla_host_t *vha, 1421 const uint16_t loop_id) 1422 { 1423 struct tcm_qla2xxx_lport *lport; 1424 struct se_node_acl *se_nacl; 1425 struct tcm_qla2xxx_nacl *nacl; 1426 struct tcm_qla2xxx_fc_loopid *fc_loopid; 1427 1428 lport = vha->vha_tgt.target_lport_ptr; 1429 if (!lport) { 1430 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1431 dump_stack(); 1432 return NULL; 1433 } 1434 1435 pr_debug("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id); 1436 1437 fc_loopid = lport->lport_loopid_map + loop_id; 1438 se_nacl = fc_loopid->se_nacl; 1439 if (!se_nacl) { 1440 pr_debug("Unable to locate se_nacl by loop_id: 0x%04x\n", 1441 loop_id); 1442 return NULL; 1443 } 1444 1445 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1446 1447 if (!nacl->qla_tgt_sess) { 1448 pr_err("Unable to locate struct qla_tgt_sess\n"); 1449 return NULL; 1450 } 1451 1452 return nacl->qla_tgt_sess; 1453 } 1454 1455 /* 1456 * Expected to be called with struct qla_hw_data->hardware_lock held 1457 */ 1458 static void tcm_qla2xxx_set_sess_by_loop_id( 1459 struct tcm_qla2xxx_lport *lport, 1460 struct se_node_acl *new_se_nacl, 1461 struct tcm_qla2xxx_nacl *nacl, 1462 struct se_session *se_sess, 1463 struct qla_tgt_sess *qla_tgt_sess, 1464 uint16_t loop_id) 1465 { 1466 struct se_node_acl *saved_nacl; 1467 struct tcm_qla2xxx_fc_loopid *fc_loopid; 1468 1469 pr_debug("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id); 1470 1471 fc_loopid = &((struct tcm_qla2xxx_fc_loopid *) 1472 lport->lport_loopid_map)[loop_id]; 1473 1474 saved_nacl = fc_loopid->se_nacl; 1475 if (!saved_nacl) { 1476 pr_debug("Setting up new fc_loopid->se_nacl to new_se_nacl\n"); 1477 fc_loopid->se_nacl = new_se_nacl; 1478 if (qla_tgt_sess->se_sess != se_sess) 1479 qla_tgt_sess->se_sess = se_sess; 1480 if (nacl->qla_tgt_sess != qla_tgt_sess) 1481 nacl->qla_tgt_sess = qla_tgt_sess; 1482 return; 1483 } 1484 1485 if (nacl->qla_tgt_sess) { 1486 if (new_se_nacl == NULL) { 1487 pr_debug("Clearing nacl->qla_tgt_sess and fc_loopid->se_nacl\n"); 1488 fc_loopid->se_nacl = NULL; 1489 nacl->qla_tgt_sess = NULL; 1490 return; 1491 } 1492 1493 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_loopid->se_nacl\n"); 1494 fc_loopid->se_nacl = new_se_nacl; 1495 if (qla_tgt_sess->se_sess != se_sess) 1496 qla_tgt_sess->se_sess = se_sess; 1497 if (nacl->qla_tgt_sess != qla_tgt_sess) 1498 nacl->qla_tgt_sess = qla_tgt_sess; 1499 return; 1500 } 1501 1502 if (new_se_nacl == NULL) { 1503 pr_debug("Clearing fc_loopid->se_nacl\n"); 1504 fc_loopid->se_nacl = NULL; 1505 return; 1506 } 1507 1508 pr_debug("Replacing existing fc_loopid->se_nacl w/o active nacl->qla_tgt_sess\n"); 1509 fc_loopid->se_nacl = new_se_nacl; 1510 if (qla_tgt_sess->se_sess != se_sess) 1511 qla_tgt_sess->se_sess = se_sess; 1512 if (nacl->qla_tgt_sess != qla_tgt_sess) 1513 nacl->qla_tgt_sess = qla_tgt_sess; 1514 1515 pr_debug("Setup nacl->qla_tgt_sess %p by loop_id for se_nacl: %p, initiatorname: %s\n", 1516 nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname); 1517 } 1518 1519 /* 1520 * Should always be called with qla_hw_data->hardware_lock held. 1521 */ 1522 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *lport, 1523 struct tcm_qla2xxx_nacl *nacl, struct qla_tgt_sess *sess) 1524 { 1525 struct se_session *se_sess = sess->se_sess; 1526 unsigned char be_sid[3]; 1527 1528 be_sid[0] = sess->s_id.b.domain; 1529 be_sid[1] = sess->s_id.b.area; 1530 be_sid[2] = sess->s_id.b.al_pa; 1531 1532 tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess, 1533 sess, be_sid); 1534 tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess, 1535 sess, sess->loop_id); 1536 } 1537 1538 static void tcm_qla2xxx_free_session(struct qla_tgt_sess *sess) 1539 { 1540 struct qla_tgt *tgt = sess->tgt; 1541 struct qla_hw_data *ha = tgt->ha; 1542 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev); 1543 struct se_session *se_sess; 1544 struct se_node_acl *se_nacl; 1545 struct tcm_qla2xxx_lport *lport; 1546 struct tcm_qla2xxx_nacl *nacl; 1547 1548 BUG_ON(in_interrupt()); 1549 1550 se_sess = sess->se_sess; 1551 if (!se_sess) { 1552 pr_err("struct qla_tgt_sess->se_sess is NULL\n"); 1553 dump_stack(); 1554 return; 1555 } 1556 se_nacl = se_sess->se_node_acl; 1557 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1558 1559 lport = vha->vha_tgt.target_lport_ptr; 1560 if (!lport) { 1561 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1562 dump_stack(); 1563 return; 1564 } 1565 target_wait_for_sess_cmds(se_sess); 1566 1567 transport_deregister_session_configfs(sess->se_sess); 1568 transport_deregister_session(sess->se_sess); 1569 } 1570 1571 /* 1572 * Called via qlt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl() 1573 * to locate struct se_node_acl 1574 */ 1575 static int tcm_qla2xxx_check_initiator_node_acl( 1576 scsi_qla_host_t *vha, 1577 unsigned char *fc_wwpn, 1578 void *qla_tgt_sess, 1579 uint8_t *s_id, 1580 uint16_t loop_id) 1581 { 1582 struct qla_hw_data *ha = vha->hw; 1583 struct tcm_qla2xxx_lport *lport; 1584 struct tcm_qla2xxx_tpg *tpg; 1585 struct tcm_qla2xxx_nacl *nacl; 1586 struct se_portal_group *se_tpg; 1587 struct se_node_acl *se_nacl; 1588 struct se_session *se_sess; 1589 struct qla_tgt_sess *sess = qla_tgt_sess; 1590 unsigned char port_name[36]; 1591 unsigned long flags; 1592 int num_tags = (ha->fw_xcb_count) ? ha->fw_xcb_count : 1593 TCM_QLA2XXX_DEFAULT_TAGS; 1594 1595 lport = vha->vha_tgt.target_lport_ptr; 1596 if (!lport) { 1597 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1598 dump_stack(); 1599 return -EINVAL; 1600 } 1601 /* 1602 * Locate the TPG=1 reference.. 1603 */ 1604 tpg = lport->tpg_1; 1605 if (!tpg) { 1606 pr_err("Unable to lcoate struct tcm_qla2xxx_lport->tpg_1\n"); 1607 return -EINVAL; 1608 } 1609 se_tpg = &tpg->se_tpg; 1610 1611 se_sess = transport_init_session_tags(num_tags, 1612 sizeof(struct qla_tgt_cmd), 1613 TARGET_PROT_ALL); 1614 if (IS_ERR(se_sess)) { 1615 pr_err("Unable to initialize struct se_session\n"); 1616 return PTR_ERR(se_sess); 1617 } 1618 /* 1619 * Format the FCP Initiator port_name into colon seperated values to 1620 * match the format by tcm_qla2xxx explict ConfigFS NodeACLs. 1621 */ 1622 memset(&port_name, 0, 36); 1623 snprintf(port_name, sizeof(port_name), "%8phC", fc_wwpn); 1624 /* 1625 * Locate our struct se_node_acl either from an explict NodeACL created 1626 * via ConfigFS, or via running in TPG demo mode. 1627 */ 1628 se_sess->se_node_acl = core_tpg_check_initiator_node_acl(se_tpg, 1629 port_name); 1630 if (!se_sess->se_node_acl) { 1631 transport_free_session(se_sess); 1632 return -EINVAL; 1633 } 1634 se_nacl = se_sess->se_node_acl; 1635 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1636 /* 1637 * And now setup the new se_nacl and session pointers into our HW lport 1638 * mappings for fabric S_ID and LOOP_ID. 1639 */ 1640 spin_lock_irqsave(&ha->hardware_lock, flags); 1641 tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl, se_sess, 1642 qla_tgt_sess, s_id); 1643 tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl, se_sess, 1644 qla_tgt_sess, loop_id); 1645 spin_unlock_irqrestore(&ha->hardware_lock, flags); 1646 /* 1647 * Finally register the new FC Nexus with TCM 1648 */ 1649 transport_register_session(se_nacl->se_tpg, se_nacl, se_sess, sess); 1650 1651 return 0; 1652 } 1653 1654 static void tcm_qla2xxx_update_sess(struct qla_tgt_sess *sess, port_id_t s_id, 1655 uint16_t loop_id, bool conf_compl_supported) 1656 { 1657 struct qla_tgt *tgt = sess->tgt; 1658 struct qla_hw_data *ha = tgt->ha; 1659 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev); 1660 struct tcm_qla2xxx_lport *lport = vha->vha_tgt.target_lport_ptr; 1661 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl; 1662 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl, 1663 struct tcm_qla2xxx_nacl, se_node_acl); 1664 u32 key; 1665 1666 1667 if (sess->loop_id != loop_id || sess->s_id.b24 != s_id.b24) 1668 pr_info("Updating session %p from port %8phC loop_id %d -> %d s_id %x:%x:%x -> %x:%x:%x\n", 1669 sess, sess->port_name, 1670 sess->loop_id, loop_id, sess->s_id.b.domain, 1671 sess->s_id.b.area, sess->s_id.b.al_pa, s_id.b.domain, 1672 s_id.b.area, s_id.b.al_pa); 1673 1674 if (sess->loop_id != loop_id) { 1675 /* 1676 * Because we can shuffle loop IDs around and we 1677 * update different sessions non-atomically, we might 1678 * have overwritten this session's old loop ID 1679 * already, and we might end up overwriting some other 1680 * session that will be updated later. So we have to 1681 * be extra careful and we can't warn about those things... 1682 */ 1683 if (lport->lport_loopid_map[sess->loop_id].se_nacl == se_nacl) 1684 lport->lport_loopid_map[sess->loop_id].se_nacl = NULL; 1685 1686 lport->lport_loopid_map[loop_id].se_nacl = se_nacl; 1687 1688 sess->loop_id = loop_id; 1689 } 1690 1691 if (sess->s_id.b24 != s_id.b24) { 1692 key = (((u32) sess->s_id.b.domain << 16) | 1693 ((u32) sess->s_id.b.area << 8) | 1694 ((u32) sess->s_id.b.al_pa)); 1695 1696 if (btree_lookup32(&lport->lport_fcport_map, key)) 1697 WARN(btree_remove32(&lport->lport_fcport_map, key) != se_nacl, 1698 "Found wrong se_nacl when updating s_id %x:%x:%x\n", 1699 sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa); 1700 else 1701 WARN(1, "No lport_fcport_map entry for s_id %x:%x:%x\n", 1702 sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa); 1703 1704 key = (((u32) s_id.b.domain << 16) | 1705 ((u32) s_id.b.area << 8) | 1706 ((u32) s_id.b.al_pa)); 1707 1708 if (btree_lookup32(&lport->lport_fcport_map, key)) { 1709 WARN(1, "Already have lport_fcport_map entry for s_id %x:%x:%x\n", 1710 s_id.b.domain, s_id.b.area, s_id.b.al_pa); 1711 btree_update32(&lport->lport_fcport_map, key, se_nacl); 1712 } else { 1713 btree_insert32(&lport->lport_fcport_map, key, se_nacl, GFP_ATOMIC); 1714 } 1715 1716 sess->s_id = s_id; 1717 nacl->nport_id = key; 1718 } 1719 1720 sess->conf_compl_supported = conf_compl_supported; 1721 } 1722 1723 /* 1724 * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path. 1725 */ 1726 static struct qla_tgt_func_tmpl tcm_qla2xxx_template = { 1727 .handle_cmd = tcm_qla2xxx_handle_cmd, 1728 .handle_data = tcm_qla2xxx_handle_data, 1729 .handle_dif_err = tcm_qla2xxx_handle_dif_err, 1730 .handle_tmr = tcm_qla2xxx_handle_tmr, 1731 .free_cmd = tcm_qla2xxx_free_cmd, 1732 .free_mcmd = tcm_qla2xxx_free_mcmd, 1733 .free_session = tcm_qla2xxx_free_session, 1734 .update_sess = tcm_qla2xxx_update_sess, 1735 .check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl, 1736 .find_sess_by_s_id = tcm_qla2xxx_find_sess_by_s_id, 1737 .find_sess_by_loop_id = tcm_qla2xxx_find_sess_by_loop_id, 1738 .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map, 1739 .put_sess = tcm_qla2xxx_put_sess, 1740 .shutdown_sess = tcm_qla2xxx_shutdown_sess, 1741 }; 1742 1743 static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport) 1744 { 1745 int rc; 1746 1747 rc = btree_init32(&lport->lport_fcport_map); 1748 if (rc) { 1749 pr_err("Unable to initialize lport->lport_fcport_map btree\n"); 1750 return rc; 1751 } 1752 1753 lport->lport_loopid_map = vmalloc(sizeof(struct tcm_qla2xxx_fc_loopid) * 1754 65536); 1755 if (!lport->lport_loopid_map) { 1756 pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n", 1757 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536); 1758 btree_destroy32(&lport->lport_fcport_map); 1759 return -ENOMEM; 1760 } 1761 memset(lport->lport_loopid_map, 0, sizeof(struct tcm_qla2xxx_fc_loopid) 1762 * 65536); 1763 pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n", 1764 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536); 1765 return 0; 1766 } 1767 1768 static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha, 1769 void *target_lport_ptr, 1770 u64 npiv_wwpn, u64 npiv_wwnn) 1771 { 1772 struct qla_hw_data *ha = vha->hw; 1773 struct tcm_qla2xxx_lport *lport = 1774 (struct tcm_qla2xxx_lport *)target_lport_ptr; 1775 /* 1776 * Setup tgt_ops, local pointer to vha and target_lport_ptr 1777 */ 1778 ha->tgt.tgt_ops = &tcm_qla2xxx_template; 1779 vha->vha_tgt.target_lport_ptr = target_lport_ptr; 1780 lport->qla_vha = vha; 1781 1782 return 0; 1783 } 1784 1785 static struct se_wwn *tcm_qla2xxx_make_lport( 1786 struct target_fabric_configfs *tf, 1787 struct config_group *group, 1788 const char *name) 1789 { 1790 struct tcm_qla2xxx_lport *lport; 1791 u64 wwpn; 1792 int ret = -ENODEV; 1793 1794 if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0) 1795 return ERR_PTR(-EINVAL); 1796 1797 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL); 1798 if (!lport) { 1799 pr_err("Unable to allocate struct tcm_qla2xxx_lport\n"); 1800 return ERR_PTR(-ENOMEM); 1801 } 1802 lport->lport_wwpn = wwpn; 1803 tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN, 1804 wwpn); 1805 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) wwpn); 1806 1807 ret = tcm_qla2xxx_init_lport(lport); 1808 if (ret != 0) 1809 goto out; 1810 1811 ret = qlt_lport_register(lport, wwpn, 0, 0, 1812 tcm_qla2xxx_lport_register_cb); 1813 if (ret != 0) 1814 goto out_lport; 1815 1816 return &lport->lport_wwn; 1817 out_lport: 1818 vfree(lport->lport_loopid_map); 1819 btree_destroy32(&lport->lport_fcport_map); 1820 out: 1821 kfree(lport); 1822 return ERR_PTR(ret); 1823 } 1824 1825 static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn) 1826 { 1827 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1828 struct tcm_qla2xxx_lport, lport_wwn); 1829 struct scsi_qla_host *vha = lport->qla_vha; 1830 struct se_node_acl *node; 1831 u32 key = 0; 1832 1833 /* 1834 * Call into qla2x_target.c LLD logic to complete the 1835 * shutdown of struct qla_tgt after the call to 1836 * qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above.. 1837 */ 1838 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stopped) 1839 qlt_stop_phase2(vha->vha_tgt.qla_tgt); 1840 1841 qlt_lport_deregister(vha); 1842 1843 vfree(lport->lport_loopid_map); 1844 btree_for_each_safe32(&lport->lport_fcport_map, key, node) 1845 btree_remove32(&lport->lport_fcport_map, key); 1846 btree_destroy32(&lport->lport_fcport_map); 1847 kfree(lport); 1848 } 1849 1850 static int tcm_qla2xxx_lport_register_npiv_cb(struct scsi_qla_host *base_vha, 1851 void *target_lport_ptr, 1852 u64 npiv_wwpn, u64 npiv_wwnn) 1853 { 1854 struct fc_vport *vport; 1855 struct Scsi_Host *sh = base_vha->host; 1856 struct scsi_qla_host *npiv_vha; 1857 struct tcm_qla2xxx_lport *lport = 1858 (struct tcm_qla2xxx_lport *)target_lport_ptr; 1859 struct tcm_qla2xxx_lport *base_lport = 1860 (struct tcm_qla2xxx_lport *)base_vha->vha_tgt.target_lport_ptr; 1861 struct tcm_qla2xxx_tpg *base_tpg; 1862 struct fc_vport_identifiers vport_id; 1863 1864 if (!qla_tgt_mode_enabled(base_vha)) { 1865 pr_err("qla2xxx base_vha not enabled for target mode\n"); 1866 return -EPERM; 1867 } 1868 1869 if (!base_lport || !base_lport->tpg_1 || 1870 !atomic_read(&base_lport->tpg_1->lport_tpg_enabled)) { 1871 pr_err("qla2xxx base_lport or tpg_1 not available\n"); 1872 return -EPERM; 1873 } 1874 base_tpg = base_lport->tpg_1; 1875 1876 memset(&vport_id, 0, sizeof(vport_id)); 1877 vport_id.port_name = npiv_wwpn; 1878 vport_id.node_name = npiv_wwnn; 1879 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR; 1880 vport_id.vport_type = FC_PORTTYPE_NPIV; 1881 vport_id.disable = false; 1882 1883 vport = fc_vport_create(sh, 0, &vport_id); 1884 if (!vport) { 1885 pr_err("fc_vport_create failed for qla2xxx_npiv\n"); 1886 return -ENODEV; 1887 } 1888 /* 1889 * Setup local pointer to NPIV vhba + target_lport_ptr 1890 */ 1891 npiv_vha = (struct scsi_qla_host *)vport->dd_data; 1892 npiv_vha->vha_tgt.target_lport_ptr = target_lport_ptr; 1893 lport->qla_vha = npiv_vha; 1894 scsi_host_get(npiv_vha->host); 1895 return 0; 1896 } 1897 1898 1899 static struct se_wwn *tcm_qla2xxx_npiv_make_lport( 1900 struct target_fabric_configfs *tf, 1901 struct config_group *group, 1902 const char *name) 1903 { 1904 struct tcm_qla2xxx_lport *lport; 1905 u64 phys_wwpn, npiv_wwpn, npiv_wwnn; 1906 char *p, tmp[128]; 1907 int ret; 1908 1909 snprintf(tmp, 128, "%s", name); 1910 1911 p = strchr(tmp, '@'); 1912 if (!p) { 1913 pr_err("Unable to locate NPIV '@' seperator\n"); 1914 return ERR_PTR(-EINVAL); 1915 } 1916 *p++ = '\0'; 1917 1918 if (tcm_qla2xxx_parse_wwn(tmp, &phys_wwpn, 1) < 0) 1919 return ERR_PTR(-EINVAL); 1920 1921 if (tcm_qla2xxx_npiv_parse_wwn(p, strlen(p)+1, 1922 &npiv_wwpn, &npiv_wwnn) < 0) 1923 return ERR_PTR(-EINVAL); 1924 1925 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL); 1926 if (!lport) { 1927 pr_err("Unable to allocate struct tcm_qla2xxx_lport for NPIV\n"); 1928 return ERR_PTR(-ENOMEM); 1929 } 1930 lport->lport_npiv_wwpn = npiv_wwpn; 1931 lport->lport_npiv_wwnn = npiv_wwnn; 1932 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) npiv_wwpn); 1933 1934 ret = tcm_qla2xxx_init_lport(lport); 1935 if (ret != 0) 1936 goto out; 1937 1938 ret = qlt_lport_register(lport, phys_wwpn, npiv_wwpn, npiv_wwnn, 1939 tcm_qla2xxx_lport_register_npiv_cb); 1940 if (ret != 0) 1941 goto out_lport; 1942 1943 return &lport->lport_wwn; 1944 out_lport: 1945 vfree(lport->lport_loopid_map); 1946 btree_destroy32(&lport->lport_fcport_map); 1947 out: 1948 kfree(lport); 1949 return ERR_PTR(ret); 1950 } 1951 1952 static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn) 1953 { 1954 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1955 struct tcm_qla2xxx_lport, lport_wwn); 1956 struct scsi_qla_host *npiv_vha = lport->qla_vha; 1957 struct qla_hw_data *ha = npiv_vha->hw; 1958 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 1959 1960 scsi_host_put(npiv_vha->host); 1961 /* 1962 * Notify libfc that we want to release the vha->fc_vport 1963 */ 1964 fc_vport_terminate(npiv_vha->fc_vport); 1965 scsi_host_put(base_vha->host); 1966 kfree(lport); 1967 } 1968 1969 1970 static ssize_t tcm_qla2xxx_wwn_show_attr_version( 1971 struct target_fabric_configfs *tf, 1972 char *page) 1973 { 1974 return sprintf(page, 1975 "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s on " 1976 UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname, 1977 utsname()->machine); 1978 } 1979 1980 TF_WWN_ATTR_RO(tcm_qla2xxx, version); 1981 1982 static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = { 1983 &tcm_qla2xxx_wwn_version.attr, 1984 NULL, 1985 }; 1986 1987 static const struct target_core_fabric_ops tcm_qla2xxx_ops = { 1988 .module = THIS_MODULE, 1989 .name = "qla2xxx", 1990 .get_fabric_name = tcm_qla2xxx_get_fabric_name, 1991 .get_fabric_proto_ident = tcm_qla2xxx_get_fabric_proto_ident, 1992 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn, 1993 .tpg_get_tag = tcm_qla2xxx_get_tag, 1994 .tpg_get_default_depth = tcm_qla2xxx_get_default_depth, 1995 .tpg_get_pr_transport_id = tcm_qla2xxx_get_pr_transport_id, 1996 .tpg_get_pr_transport_id_len = tcm_qla2xxx_get_pr_transport_id_len, 1997 .tpg_parse_pr_out_transport_id = tcm_qla2xxx_parse_pr_out_transport_id, 1998 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode, 1999 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache, 2000 .tpg_check_demo_mode_write_protect = 2001 tcm_qla2xxx_check_demo_write_protect, 2002 .tpg_check_prod_mode_write_protect = 2003 tcm_qla2xxx_check_prod_write_protect, 2004 .tpg_check_prot_fabric_only = tcm_qla2xxx_check_prot_fabric_only, 2005 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only, 2006 .tpg_alloc_fabric_acl = tcm_qla2xxx_alloc_fabric_acl, 2007 .tpg_release_fabric_acl = tcm_qla2xxx_release_fabric_acl, 2008 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index, 2009 .check_stop_free = tcm_qla2xxx_check_stop_free, 2010 .release_cmd = tcm_qla2xxx_release_cmd, 2011 .put_session = tcm_qla2xxx_put_session, 2012 .shutdown_session = tcm_qla2xxx_shutdown_session, 2013 .close_session = tcm_qla2xxx_close_session, 2014 .sess_get_index = tcm_qla2xxx_sess_get_index, 2015 .sess_get_initiator_sid = NULL, 2016 .write_pending = tcm_qla2xxx_write_pending, 2017 .write_pending_status = tcm_qla2xxx_write_pending_status, 2018 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs, 2019 .get_task_tag = tcm_qla2xxx_get_task_tag, 2020 .get_cmd_state = tcm_qla2xxx_get_cmd_state, 2021 .queue_data_in = tcm_qla2xxx_queue_data_in, 2022 .queue_status = tcm_qla2xxx_queue_status, 2023 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp, 2024 .aborted_task = tcm_qla2xxx_aborted_task, 2025 /* 2026 * Setup function pointers for generic logic in 2027 * target_core_fabric_configfs.c 2028 */ 2029 .fabric_make_wwn = tcm_qla2xxx_make_lport, 2030 .fabric_drop_wwn = tcm_qla2xxx_drop_lport, 2031 .fabric_make_tpg = tcm_qla2xxx_make_tpg, 2032 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg, 2033 .fabric_post_link = NULL, 2034 .fabric_pre_unlink = NULL, 2035 .fabric_make_np = NULL, 2036 .fabric_drop_np = NULL, 2037 .fabric_make_nodeacl = tcm_qla2xxx_make_nodeacl, 2038 .fabric_drop_nodeacl = tcm_qla2xxx_drop_nodeacl, 2039 2040 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs, 2041 .tfc_tpg_base_attrs = tcm_qla2xxx_tpg_attrs, 2042 .tfc_tpg_attrib_attrs = tcm_qla2xxx_tpg_attrib_attrs, 2043 }; 2044 2045 static const struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = { 2046 .module = THIS_MODULE, 2047 .name = "qla2xxx_npiv", 2048 .get_fabric_name = tcm_qla2xxx_npiv_get_fabric_name, 2049 .get_fabric_proto_ident = tcm_qla2xxx_get_fabric_proto_ident, 2050 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn, 2051 .tpg_get_tag = tcm_qla2xxx_get_tag, 2052 .tpg_get_default_depth = tcm_qla2xxx_get_default_depth, 2053 .tpg_get_pr_transport_id = tcm_qla2xxx_get_pr_transport_id, 2054 .tpg_get_pr_transport_id_len = tcm_qla2xxx_get_pr_transport_id_len, 2055 .tpg_parse_pr_out_transport_id = tcm_qla2xxx_parse_pr_out_transport_id, 2056 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode, 2057 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache, 2058 .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_demo_mode, 2059 .tpg_check_prod_mode_write_protect = 2060 tcm_qla2xxx_check_prod_write_protect, 2061 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only, 2062 .tpg_alloc_fabric_acl = tcm_qla2xxx_alloc_fabric_acl, 2063 .tpg_release_fabric_acl = tcm_qla2xxx_release_fabric_acl, 2064 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index, 2065 .check_stop_free = tcm_qla2xxx_check_stop_free, 2066 .release_cmd = tcm_qla2xxx_release_cmd, 2067 .put_session = tcm_qla2xxx_put_session, 2068 .shutdown_session = tcm_qla2xxx_shutdown_session, 2069 .close_session = tcm_qla2xxx_close_session, 2070 .sess_get_index = tcm_qla2xxx_sess_get_index, 2071 .sess_get_initiator_sid = NULL, 2072 .write_pending = tcm_qla2xxx_write_pending, 2073 .write_pending_status = tcm_qla2xxx_write_pending_status, 2074 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs, 2075 .get_task_tag = tcm_qla2xxx_get_task_tag, 2076 .get_cmd_state = tcm_qla2xxx_get_cmd_state, 2077 .queue_data_in = tcm_qla2xxx_queue_data_in, 2078 .queue_status = tcm_qla2xxx_queue_status, 2079 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp, 2080 .aborted_task = tcm_qla2xxx_aborted_task, 2081 /* 2082 * Setup function pointers for generic logic in 2083 * target_core_fabric_configfs.c 2084 */ 2085 .fabric_make_wwn = tcm_qla2xxx_npiv_make_lport, 2086 .fabric_drop_wwn = tcm_qla2xxx_npiv_drop_lport, 2087 .fabric_make_tpg = tcm_qla2xxx_npiv_make_tpg, 2088 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg, 2089 .fabric_post_link = NULL, 2090 .fabric_pre_unlink = NULL, 2091 .fabric_make_np = NULL, 2092 .fabric_drop_np = NULL, 2093 .fabric_make_nodeacl = tcm_qla2xxx_make_nodeacl, 2094 .fabric_drop_nodeacl = tcm_qla2xxx_drop_nodeacl, 2095 2096 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs, 2097 .tfc_tpg_base_attrs = tcm_qla2xxx_npiv_tpg_attrs, 2098 }; 2099 2100 static int tcm_qla2xxx_register_configfs(void) 2101 { 2102 int ret; 2103 2104 pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on " 2105 UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname, 2106 utsname()->machine); 2107 2108 ret = target_register_template(&tcm_qla2xxx_ops); 2109 if (ret) 2110 return ret; 2111 2112 ret = target_register_template(&tcm_qla2xxx_npiv_ops); 2113 if (ret) 2114 goto out_fabric; 2115 2116 tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free", 2117 WQ_MEM_RECLAIM, 0); 2118 if (!tcm_qla2xxx_free_wq) { 2119 ret = -ENOMEM; 2120 goto out_fabric_npiv; 2121 } 2122 2123 tcm_qla2xxx_cmd_wq = alloc_workqueue("tcm_qla2xxx_cmd", 0, 0); 2124 if (!tcm_qla2xxx_cmd_wq) { 2125 ret = -ENOMEM; 2126 goto out_free_wq; 2127 } 2128 2129 return 0; 2130 2131 out_free_wq: 2132 destroy_workqueue(tcm_qla2xxx_free_wq); 2133 out_fabric_npiv: 2134 target_unregister_template(&tcm_qla2xxx_npiv_ops); 2135 out_fabric: 2136 target_unregister_template(&tcm_qla2xxx_ops); 2137 return ret; 2138 } 2139 2140 static void tcm_qla2xxx_deregister_configfs(void) 2141 { 2142 destroy_workqueue(tcm_qla2xxx_cmd_wq); 2143 destroy_workqueue(tcm_qla2xxx_free_wq); 2144 2145 target_unregister_template(&tcm_qla2xxx_ops); 2146 target_unregister_template(&tcm_qla2xxx_npiv_ops); 2147 } 2148 2149 static int __init tcm_qla2xxx_init(void) 2150 { 2151 int ret; 2152 2153 ret = tcm_qla2xxx_register_configfs(); 2154 if (ret < 0) 2155 return ret; 2156 2157 return 0; 2158 } 2159 2160 static void __exit tcm_qla2xxx_exit(void) 2161 { 2162 tcm_qla2xxx_deregister_configfs(); 2163 } 2164 2165 MODULE_DESCRIPTION("TCM QLA2XXX series NPIV enabled fabric driver"); 2166 MODULE_LICENSE("GPL"); 2167 module_init(tcm_qla2xxx_init); 2168 module_exit(tcm_qla2xxx_exit); 2169