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/vmalloc.h> 31 #include <linux/init.h> 32 #include <linux/list.h> 33 #include <linux/slab.h> 34 #include <linux/kthread.h> 35 #include <linux/types.h> 36 #include <linux/string.h> 37 #include <linux/configfs.h> 38 #include <linux/ctype.h> 39 #include <asm/unaligned.h> 40 #include <scsi/scsi.h> 41 #include <scsi/scsi_host.h> 42 #include <scsi/scsi_device.h> 43 #include <scsi/scsi_cmnd.h> 44 #include <target/target_core_base.h> 45 #include <target/target_core_fabric.h> 46 #include <target/target_core_fabric_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 /* 57 * Parse WWN. 58 * If strict, we require lower-case hex and colon separators to be sure 59 * the name is the same as what would be generated by ft_format_wwn() 60 * so the name and wwn are mapped one-to-one. 61 */ 62 static ssize_t tcm_qla2xxx_parse_wwn(const char *name, u64 *wwn, int strict) 63 { 64 const char *cp; 65 char c; 66 u32 nibble; 67 u32 byte = 0; 68 u32 pos = 0; 69 u32 err; 70 71 *wwn = 0; 72 for (cp = name; cp < &name[TCM_QLA2XXX_NAMELEN - 1]; cp++) { 73 c = *cp; 74 if (c == '\n' && cp[1] == '\0') 75 continue; 76 if (strict && pos++ == 2 && byte++ < 7) { 77 pos = 0; 78 if (c == ':') 79 continue; 80 err = 1; 81 goto fail; 82 } 83 if (c == '\0') { 84 err = 2; 85 if (strict && byte != 8) 86 goto fail; 87 return cp - name; 88 } 89 err = 3; 90 if (isdigit(c)) 91 nibble = c - '0'; 92 else if (isxdigit(c) && (islower(c) || !strict)) 93 nibble = tolower(c) - 'a' + 10; 94 else 95 goto fail; 96 *wwn = (*wwn << 4) | nibble; 97 } 98 err = 4; 99 fail: 100 pr_debug("err %u len %zu pos %u byte %u\n", 101 err, cp - name, pos, byte); 102 return -1; 103 } 104 105 static ssize_t tcm_qla2xxx_format_wwn(char *buf, size_t len, u64 wwn) 106 { 107 u8 b[8]; 108 109 put_unaligned_be64(wwn, b); 110 return snprintf(buf, len, 111 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x", 112 b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7]); 113 } 114 115 static char *tcm_qla2xxx_get_fabric_name(void) 116 { 117 return "qla2xxx"; 118 } 119 120 /* 121 * From drivers/scsi/scsi_transport_fc.c:fc_parse_wwn 122 */ 123 static int tcm_qla2xxx_npiv_extract_wwn(const char *ns, u64 *nm) 124 { 125 unsigned int i, j; 126 u8 wwn[8]; 127 128 memset(wwn, 0, sizeof(wwn)); 129 130 /* Validate and store the new name */ 131 for (i = 0, j = 0; i < 16; i++) { 132 int value; 133 134 value = hex_to_bin(*ns++); 135 if (value >= 0) 136 j = (j << 4) | value; 137 else 138 return -EINVAL; 139 140 if (i % 2) { 141 wwn[i/2] = j & 0xff; 142 j = 0; 143 } 144 } 145 146 *nm = wwn_to_u64(wwn); 147 return 0; 148 } 149 150 /* 151 * This parsing logic follows drivers/scsi/scsi_transport_fc.c: 152 * store_fc_host_vport_create() 153 */ 154 static int tcm_qla2xxx_npiv_parse_wwn( 155 const char *name, 156 size_t count, 157 u64 *wwpn, 158 u64 *wwnn) 159 { 160 unsigned int cnt = count; 161 int rc; 162 163 *wwpn = 0; 164 *wwnn = 0; 165 166 /* count may include a LF at end of string */ 167 if (name[cnt-1] == '\n' || name[cnt-1] == 0) 168 cnt--; 169 170 /* validate we have enough characters for WWPN */ 171 if ((cnt != (16+1+16)) || (name[16] != ':')) 172 return -EINVAL; 173 174 rc = tcm_qla2xxx_npiv_extract_wwn(&name[0], wwpn); 175 if (rc != 0) 176 return rc; 177 178 rc = tcm_qla2xxx_npiv_extract_wwn(&name[17], wwnn); 179 if (rc != 0) 180 return rc; 181 182 return 0; 183 } 184 185 static char *tcm_qla2xxx_npiv_get_fabric_name(void) 186 { 187 return "qla2xxx_npiv"; 188 } 189 190 static char *tcm_qla2xxx_get_fabric_wwn(struct se_portal_group *se_tpg) 191 { 192 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 193 struct tcm_qla2xxx_tpg, se_tpg); 194 struct tcm_qla2xxx_lport *lport = tpg->lport; 195 196 return lport->lport_naa_name; 197 } 198 199 static u16 tcm_qla2xxx_get_tag(struct se_portal_group *se_tpg) 200 { 201 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 202 struct tcm_qla2xxx_tpg, se_tpg); 203 return tpg->lport_tpgt; 204 } 205 206 static int tcm_qla2xxx_check_demo_mode(struct se_portal_group *se_tpg) 207 { 208 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 209 struct tcm_qla2xxx_tpg, se_tpg); 210 211 return tpg->tpg_attrib.generate_node_acls; 212 } 213 214 static int tcm_qla2xxx_check_demo_mode_cache(struct se_portal_group *se_tpg) 215 { 216 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 217 struct tcm_qla2xxx_tpg, se_tpg); 218 219 return tpg->tpg_attrib.cache_dynamic_acls; 220 } 221 222 static int tcm_qla2xxx_check_demo_write_protect(struct se_portal_group *se_tpg) 223 { 224 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 225 struct tcm_qla2xxx_tpg, se_tpg); 226 227 return tpg->tpg_attrib.demo_mode_write_protect; 228 } 229 230 static int tcm_qla2xxx_check_prod_write_protect(struct se_portal_group *se_tpg) 231 { 232 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 233 struct tcm_qla2xxx_tpg, se_tpg); 234 235 return tpg->tpg_attrib.prod_mode_write_protect; 236 } 237 238 static int tcm_qla2xxx_check_demo_mode_login_only(struct se_portal_group *se_tpg) 239 { 240 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 241 struct tcm_qla2xxx_tpg, se_tpg); 242 243 return tpg->tpg_attrib.demo_mode_login_only; 244 } 245 246 static int tcm_qla2xxx_check_prot_fabric_only(struct se_portal_group *se_tpg) 247 { 248 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 249 struct tcm_qla2xxx_tpg, se_tpg); 250 251 return tpg->tpg_attrib.fabric_prot_type; 252 } 253 254 static u32 tcm_qla2xxx_tpg_get_inst_index(struct se_portal_group *se_tpg) 255 { 256 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 257 struct tcm_qla2xxx_tpg, se_tpg); 258 259 return tpg->lport_tpgt; 260 } 261 262 static void tcm_qla2xxx_complete_mcmd(struct work_struct *work) 263 { 264 struct qla_tgt_mgmt_cmd *mcmd = container_of(work, 265 struct qla_tgt_mgmt_cmd, free_work); 266 267 transport_generic_free_cmd(&mcmd->se_cmd, 0); 268 } 269 270 /* 271 * Called from qla_target_template->free_mcmd(), and will call 272 * tcm_qla2xxx_release_cmd() via normal struct target_core_fabric_ops 273 * release callback. qla_hw_data->hardware_lock is expected to be held 274 */ 275 static void tcm_qla2xxx_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd) 276 { 277 INIT_WORK(&mcmd->free_work, tcm_qla2xxx_complete_mcmd); 278 queue_work(tcm_qla2xxx_free_wq, &mcmd->free_work); 279 } 280 281 static void tcm_qla2xxx_complete_free(struct work_struct *work) 282 { 283 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 284 285 cmd->cmd_in_wq = 0; 286 287 WARN_ON(cmd->cmd_flags & BIT_16); 288 289 cmd->cmd_flags |= BIT_16; 290 transport_generic_free_cmd(&cmd->se_cmd, 0); 291 } 292 293 /* 294 * Called from qla_target_template->free_cmd(), and will call 295 * tcm_qla2xxx_release_cmd via normal struct target_core_fabric_ops 296 * release callback. qla_hw_data->hardware_lock is expected to be held 297 */ 298 static void tcm_qla2xxx_free_cmd(struct qla_tgt_cmd *cmd) 299 { 300 cmd->cmd_in_wq = 1; 301 INIT_WORK(&cmd->work, tcm_qla2xxx_complete_free); 302 queue_work(tcm_qla2xxx_free_wq, &cmd->work); 303 } 304 305 /* 306 * Called from struct target_core_fabric_ops->check_stop_free() context 307 */ 308 static int tcm_qla2xxx_check_stop_free(struct se_cmd *se_cmd) 309 { 310 struct qla_tgt_cmd *cmd; 311 312 if ((se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) == 0) { 313 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd); 314 cmd->cmd_flags |= BIT_14; 315 } 316 317 return target_put_sess_cmd(se_cmd); 318 } 319 320 /* tcm_qla2xxx_release_cmd - Callback from TCM Core to release underlying 321 * fabric descriptor @se_cmd command to release 322 */ 323 static void tcm_qla2xxx_release_cmd(struct se_cmd *se_cmd) 324 { 325 struct qla_tgt_cmd *cmd; 326 327 if (se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) { 328 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd, 329 struct qla_tgt_mgmt_cmd, se_cmd); 330 qlt_free_mcmd(mcmd); 331 return; 332 } 333 334 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd); 335 qlt_free_cmd(cmd); 336 } 337 338 static int tcm_qla2xxx_shutdown_session(struct se_session *se_sess) 339 { 340 struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr; 341 struct scsi_qla_host *vha; 342 unsigned long flags; 343 344 BUG_ON(!sess); 345 vha = sess->vha; 346 347 spin_lock_irqsave(&vha->hw->hardware_lock, flags); 348 target_sess_cmd_list_set_waiting(se_sess); 349 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags); 350 351 return 1; 352 } 353 354 static void tcm_qla2xxx_close_session(struct se_session *se_sess) 355 { 356 struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr; 357 struct scsi_qla_host *vha; 358 unsigned long flags; 359 360 BUG_ON(!sess); 361 vha = sess->vha; 362 363 spin_lock_irqsave(&vha->hw->hardware_lock, flags); 364 qlt_unreg_sess(sess); 365 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags); 366 } 367 368 static u32 tcm_qla2xxx_sess_get_index(struct se_session *se_sess) 369 { 370 return 0; 371 } 372 373 static int tcm_qla2xxx_write_pending(struct se_cmd *se_cmd) 374 { 375 struct qla_tgt_cmd *cmd = container_of(se_cmd, 376 struct qla_tgt_cmd, se_cmd); 377 cmd->cmd_flags |= BIT_3; 378 cmd->bufflen = se_cmd->data_length; 379 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd); 380 381 cmd->sg_cnt = se_cmd->t_data_nents; 382 cmd->sg = se_cmd->t_data_sg; 383 384 cmd->prot_sg_cnt = se_cmd->t_prot_nents; 385 cmd->prot_sg = se_cmd->t_prot_sg; 386 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size; 387 se_cmd->pi_err = 0; 388 389 /* 390 * qla_target.c:qlt_rdy_to_xfer() will call pci_map_sg() to setup 391 * the SGL mappings into PCIe memory for incoming FCP WRITE data. 392 */ 393 return qlt_rdy_to_xfer(cmd); 394 } 395 396 static int tcm_qla2xxx_write_pending_status(struct se_cmd *se_cmd) 397 { 398 unsigned long flags; 399 /* 400 * Check for WRITE_PENDING status to determine if we need to wait for 401 * CTIO aborts to be posted via hardware in tcm_qla2xxx_handle_data(). 402 */ 403 spin_lock_irqsave(&se_cmd->t_state_lock, flags); 404 if (se_cmd->t_state == TRANSPORT_WRITE_PENDING || 405 se_cmd->t_state == TRANSPORT_COMPLETE_QF_WP) { 406 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags); 407 wait_for_completion_timeout(&se_cmd->t_transport_stop_comp, 408 3 * HZ); 409 return 0; 410 } 411 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags); 412 413 return 0; 414 } 415 416 static void tcm_qla2xxx_set_default_node_attrs(struct se_node_acl *nacl) 417 { 418 return; 419 } 420 421 static int tcm_qla2xxx_get_cmd_state(struct se_cmd *se_cmd) 422 { 423 if (!(se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB)) { 424 struct qla_tgt_cmd *cmd = container_of(se_cmd, 425 struct qla_tgt_cmd, se_cmd); 426 return cmd->state; 427 } 428 429 return 0; 430 } 431 432 /* 433 * Called from process context in qla_target.c:qlt_do_work() code 434 */ 435 static int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd, 436 unsigned char *cdb, uint32_t data_length, int fcp_task_attr, 437 int data_dir, int bidi) 438 { 439 struct se_cmd *se_cmd = &cmd->se_cmd; 440 struct se_session *se_sess; 441 struct qla_tgt_sess *sess; 442 int flags = TARGET_SCF_ACK_KREF; 443 444 if (bidi) 445 flags |= TARGET_SCF_BIDI_OP; 446 447 sess = cmd->sess; 448 if (!sess) { 449 pr_err("Unable to locate struct qla_tgt_sess from qla_tgt_cmd\n"); 450 return -EINVAL; 451 } 452 453 se_sess = sess->se_sess; 454 if (!se_sess) { 455 pr_err("Unable to locate active struct se_session\n"); 456 return -EINVAL; 457 } 458 459 return target_submit_cmd(se_cmd, se_sess, cdb, &cmd->sense_buffer[0], 460 cmd->unpacked_lun, data_length, fcp_task_attr, 461 data_dir, flags); 462 } 463 464 static void tcm_qla2xxx_handle_data_work(struct work_struct *work) 465 { 466 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 467 468 /* 469 * Ensure that the complete FCP WRITE payload has been received. 470 * Otherwise return an exception via CHECK_CONDITION status. 471 */ 472 cmd->cmd_in_wq = 0; 473 cmd->cmd_flags |= BIT_11; 474 if (!cmd->write_data_transferred) { 475 /* 476 * Check if se_cmd has already been aborted via LUN_RESET, and 477 * waiting upon completion in tcm_qla2xxx_write_pending_status() 478 */ 479 if (cmd->se_cmd.transport_state & CMD_T_ABORTED) { 480 complete(&cmd->se_cmd.t_transport_stop_comp); 481 return; 482 } 483 484 if (cmd->se_cmd.pi_err) 485 transport_generic_request_failure(&cmd->se_cmd, 486 cmd->se_cmd.pi_err); 487 else 488 transport_generic_request_failure(&cmd->se_cmd, 489 TCM_CHECK_CONDITION_ABORT_CMD); 490 491 return; 492 } 493 494 return target_execute_cmd(&cmd->se_cmd); 495 } 496 497 /* 498 * Called from qla_target.c:qlt_do_ctio_completion() 499 */ 500 static void tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd) 501 { 502 cmd->cmd_flags |= BIT_10; 503 cmd->cmd_in_wq = 1; 504 INIT_WORK(&cmd->work, tcm_qla2xxx_handle_data_work); 505 queue_work(tcm_qla2xxx_free_wq, &cmd->work); 506 } 507 508 static void tcm_qla2xxx_handle_dif_work(struct work_struct *work) 509 { 510 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 511 512 /* take an extra kref to prevent cmd free too early. 513 * need to wait for SCSI status/check condition to 514 * finish responding generate by transport_generic_request_failure. 515 */ 516 kref_get(&cmd->se_cmd.cmd_kref); 517 transport_generic_request_failure(&cmd->se_cmd, cmd->se_cmd.pi_err); 518 } 519 520 /* 521 * Called from qla_target.c:qlt_do_ctio_completion() 522 */ 523 static void tcm_qla2xxx_handle_dif_err(struct qla_tgt_cmd *cmd) 524 { 525 INIT_WORK(&cmd->work, tcm_qla2xxx_handle_dif_work); 526 queue_work(tcm_qla2xxx_free_wq, &cmd->work); 527 } 528 529 /* 530 * Called from qla_target.c:qlt_issue_task_mgmt() 531 */ 532 static int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *mcmd, uint32_t lun, 533 uint8_t tmr_func, uint32_t tag) 534 { 535 struct qla_tgt_sess *sess = mcmd->sess; 536 struct se_cmd *se_cmd = &mcmd->se_cmd; 537 538 return target_submit_tmr(se_cmd, sess->se_sess, NULL, lun, mcmd, 539 tmr_func, GFP_ATOMIC, tag, TARGET_SCF_ACK_KREF); 540 } 541 542 static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd) 543 { 544 struct qla_tgt_cmd *cmd = container_of(se_cmd, 545 struct qla_tgt_cmd, se_cmd); 546 547 cmd->cmd_flags |= BIT_4; 548 cmd->bufflen = se_cmd->data_length; 549 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd); 550 551 cmd->sg_cnt = se_cmd->t_data_nents; 552 cmd->sg = se_cmd->t_data_sg; 553 cmd->offset = 0; 554 555 cmd->prot_sg_cnt = se_cmd->t_prot_nents; 556 cmd->prot_sg = se_cmd->t_prot_sg; 557 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size; 558 se_cmd->pi_err = 0; 559 560 /* 561 * Now queue completed DATA_IN the qla2xxx LLD and response ring 562 */ 563 return qlt_xmit_response(cmd, QLA_TGT_XMIT_DATA|QLA_TGT_XMIT_STATUS, 564 se_cmd->scsi_status); 565 } 566 567 static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd) 568 { 569 struct qla_tgt_cmd *cmd = container_of(se_cmd, 570 struct qla_tgt_cmd, se_cmd); 571 int xmit_type = QLA_TGT_XMIT_STATUS; 572 573 cmd->bufflen = se_cmd->data_length; 574 cmd->sg = NULL; 575 cmd->sg_cnt = 0; 576 cmd->offset = 0; 577 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd); 578 if (cmd->cmd_flags & BIT_5) { 579 pr_crit("Bit_5 already set for cmd = %p.\n", cmd); 580 dump_stack(); 581 } 582 cmd->cmd_flags |= BIT_5; 583 584 if (se_cmd->data_direction == DMA_FROM_DEVICE) { 585 /* 586 * For FCP_READ with CHECK_CONDITION status, clear cmd->bufflen 587 * for qla_tgt_xmit_response LLD code 588 */ 589 if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) { 590 se_cmd->se_cmd_flags &= ~SCF_OVERFLOW_BIT; 591 se_cmd->residual_count = 0; 592 } 593 se_cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT; 594 se_cmd->residual_count += se_cmd->data_length; 595 596 cmd->bufflen = 0; 597 } 598 /* 599 * Now queue status response to qla2xxx LLD code and response ring 600 */ 601 return qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status); 602 } 603 604 static void tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd) 605 { 606 struct se_tmr_req *se_tmr = se_cmd->se_tmr_req; 607 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd, 608 struct qla_tgt_mgmt_cmd, se_cmd); 609 610 pr_debug("queue_tm_rsp: mcmd: %p func: 0x%02x response: 0x%02x\n", 611 mcmd, se_tmr->function, se_tmr->response); 612 /* 613 * Do translation between TCM TM response codes and 614 * QLA2xxx FC TM response codes. 615 */ 616 switch (se_tmr->response) { 617 case TMR_FUNCTION_COMPLETE: 618 mcmd->fc_tm_rsp = FC_TM_SUCCESS; 619 break; 620 case TMR_TASK_DOES_NOT_EXIST: 621 mcmd->fc_tm_rsp = FC_TM_BAD_CMD; 622 break; 623 case TMR_FUNCTION_REJECTED: 624 mcmd->fc_tm_rsp = FC_TM_REJECT; 625 break; 626 case TMR_LUN_DOES_NOT_EXIST: 627 default: 628 mcmd->fc_tm_rsp = FC_TM_FAILED; 629 break; 630 } 631 /* 632 * Queue the TM response to QLA2xxx LLD to build a 633 * CTIO response packet. 634 */ 635 qlt_xmit_tm_rsp(mcmd); 636 } 637 638 static void tcm_qla2xxx_aborted_task(struct se_cmd *se_cmd) 639 { 640 struct qla_tgt_cmd *cmd = container_of(se_cmd, 641 struct qla_tgt_cmd, se_cmd); 642 qlt_abort_cmd(cmd); 643 } 644 645 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *, 646 struct tcm_qla2xxx_nacl *, struct qla_tgt_sess *); 647 /* 648 * Expected to be called with struct qla_hw_data->hardware_lock held 649 */ 650 static void tcm_qla2xxx_clear_nacl_from_fcport_map(struct qla_tgt_sess *sess) 651 { 652 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl; 653 struct se_portal_group *se_tpg = se_nacl->se_tpg; 654 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn; 655 struct tcm_qla2xxx_lport *lport = container_of(se_wwn, 656 struct tcm_qla2xxx_lport, lport_wwn); 657 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl, 658 struct tcm_qla2xxx_nacl, se_node_acl); 659 void *node; 660 661 pr_debug("fc_rport domain: port_id 0x%06x\n", nacl->nport_id); 662 663 node = btree_remove32(&lport->lport_fcport_map, nacl->nport_id); 664 if (WARN_ON(node && (node != se_nacl))) { 665 /* 666 * The nacl no longer matches what we think it should be. 667 * Most likely a new dynamic acl has been added while 668 * someone dropped the hardware lock. It clearly is a 669 * bug elsewhere, but this bit can't make things worse. 670 */ 671 btree_insert32(&lport->lport_fcport_map, nacl->nport_id, 672 node, GFP_ATOMIC); 673 } 674 675 pr_debug("Removed from fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%06x\n", 676 se_nacl, nacl->nport_wwnn, nacl->nport_id); 677 /* 678 * Now clear the se_nacl and session pointers from our HW lport lookup 679 * table mapping for this initiator's fabric S_ID and LOOP_ID entries. 680 * 681 * This is done ahead of callbacks into tcm_qla2xxx_free_session() -> 682 * target_wait_for_sess_cmds() before the session waits for outstanding 683 * I/O to complete, to avoid a race between session shutdown execution 684 * and incoming ATIOs or TMRs picking up a stale se_node_act reference. 685 */ 686 tcm_qla2xxx_clear_sess_lookup(lport, nacl, sess); 687 } 688 689 static void tcm_qla2xxx_release_session(struct kref *kref) 690 { 691 struct se_session *se_sess = container_of(kref, 692 struct se_session, sess_kref); 693 694 qlt_unreg_sess(se_sess->fabric_sess_ptr); 695 } 696 697 static void tcm_qla2xxx_put_sess(struct qla_tgt_sess *sess) 698 { 699 if (!sess) 700 return; 701 702 assert_spin_locked(&sess->vha->hw->hardware_lock); 703 kref_put(&sess->se_sess->sess_kref, tcm_qla2xxx_release_session); 704 } 705 706 static void tcm_qla2xxx_shutdown_sess(struct qla_tgt_sess *sess) 707 { 708 assert_spin_locked(&sess->vha->hw->hardware_lock); 709 target_sess_cmd_list_set_waiting(sess->se_sess); 710 } 711 712 static int tcm_qla2xxx_init_nodeacl(struct se_node_acl *se_nacl, 713 const char *name) 714 { 715 struct tcm_qla2xxx_nacl *nacl = 716 container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 717 u64 wwnn; 718 719 if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0) 720 return -EINVAL; 721 722 nacl->nport_wwnn = wwnn; 723 tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn); 724 725 return 0; 726 } 727 728 /* Start items for tcm_qla2xxx_tpg_attrib_cit */ 729 730 #define DEF_QLA_TPG_ATTRIB(name) \ 731 \ 732 static ssize_t tcm_qla2xxx_tpg_attrib_show_##name( \ 733 struct se_portal_group *se_tpg, \ 734 char *page) \ 735 { \ 736 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \ 737 struct tcm_qla2xxx_tpg, se_tpg); \ 738 \ 739 return sprintf(page, "%u\n", tpg->tpg_attrib.name); \ 740 } \ 741 \ 742 static ssize_t tcm_qla2xxx_tpg_attrib_store_##name( \ 743 struct se_portal_group *se_tpg, \ 744 const char *page, \ 745 size_t count) \ 746 { \ 747 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \ 748 struct tcm_qla2xxx_tpg, se_tpg); \ 749 unsigned long val; \ 750 int ret; \ 751 \ 752 ret = kstrtoul(page, 0, &val); \ 753 if (ret < 0) { \ 754 pr_err("kstrtoul() failed with" \ 755 " ret: %d\n", ret); \ 756 return -EINVAL; \ 757 } \ 758 ret = tcm_qla2xxx_set_attrib_##name(tpg, val); \ 759 \ 760 return (!ret) ? count : -EINVAL; \ 761 } 762 763 #define DEF_QLA_TPG_ATTR_BOOL(_name) \ 764 \ 765 static int tcm_qla2xxx_set_attrib_##_name( \ 766 struct tcm_qla2xxx_tpg *tpg, \ 767 unsigned long val) \ 768 { \ 769 struct tcm_qla2xxx_tpg_attrib *a = &tpg->tpg_attrib; \ 770 \ 771 if ((val != 0) && (val != 1)) { \ 772 pr_err("Illegal boolean value %lu\n", val); \ 773 return -EINVAL; \ 774 } \ 775 \ 776 a->_name = val; \ 777 return 0; \ 778 } 779 780 #define QLA_TPG_ATTR(_name, _mode) \ 781 TF_TPG_ATTRIB_ATTR(tcm_qla2xxx, _name, _mode); 782 783 /* 784 * Define tcm_qla2xxx_tpg_attrib_s_generate_node_acls 785 */ 786 DEF_QLA_TPG_ATTR_BOOL(generate_node_acls); 787 DEF_QLA_TPG_ATTRIB(generate_node_acls); 788 QLA_TPG_ATTR(generate_node_acls, S_IRUGO | S_IWUSR); 789 790 /* 791 Define tcm_qla2xxx_attrib_s_cache_dynamic_acls 792 */ 793 DEF_QLA_TPG_ATTR_BOOL(cache_dynamic_acls); 794 DEF_QLA_TPG_ATTRIB(cache_dynamic_acls); 795 QLA_TPG_ATTR(cache_dynamic_acls, S_IRUGO | S_IWUSR); 796 797 /* 798 * Define tcm_qla2xxx_tpg_attrib_s_demo_mode_write_protect 799 */ 800 DEF_QLA_TPG_ATTR_BOOL(demo_mode_write_protect); 801 DEF_QLA_TPG_ATTRIB(demo_mode_write_protect); 802 QLA_TPG_ATTR(demo_mode_write_protect, S_IRUGO | S_IWUSR); 803 804 /* 805 * Define tcm_qla2xxx_tpg_attrib_s_prod_mode_write_protect 806 */ 807 DEF_QLA_TPG_ATTR_BOOL(prod_mode_write_protect); 808 DEF_QLA_TPG_ATTRIB(prod_mode_write_protect); 809 QLA_TPG_ATTR(prod_mode_write_protect, S_IRUGO | S_IWUSR); 810 811 /* 812 * Define tcm_qla2xxx_tpg_attrib_s_demo_mode_login_only 813 */ 814 DEF_QLA_TPG_ATTR_BOOL(demo_mode_login_only); 815 DEF_QLA_TPG_ATTRIB(demo_mode_login_only); 816 QLA_TPG_ATTR(demo_mode_login_only, S_IRUGO | S_IWUSR); 817 818 static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = { 819 &tcm_qla2xxx_tpg_attrib_generate_node_acls.attr, 820 &tcm_qla2xxx_tpg_attrib_cache_dynamic_acls.attr, 821 &tcm_qla2xxx_tpg_attrib_demo_mode_write_protect.attr, 822 &tcm_qla2xxx_tpg_attrib_prod_mode_write_protect.attr, 823 &tcm_qla2xxx_tpg_attrib_demo_mode_login_only.attr, 824 NULL, 825 }; 826 827 /* End items for tcm_qla2xxx_tpg_attrib_cit */ 828 829 static ssize_t tcm_qla2xxx_tpg_show_enable( 830 struct se_portal_group *se_tpg, 831 char *page) 832 { 833 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 834 struct tcm_qla2xxx_tpg, se_tpg); 835 836 return snprintf(page, PAGE_SIZE, "%d\n", 837 atomic_read(&tpg->lport_tpg_enabled)); 838 } 839 840 static void tcm_qla2xxx_depend_tpg(struct work_struct *work) 841 { 842 struct tcm_qla2xxx_tpg *base_tpg = container_of(work, 843 struct tcm_qla2xxx_tpg, tpg_base_work); 844 struct se_portal_group *se_tpg = &base_tpg->se_tpg; 845 struct scsi_qla_host *base_vha = base_tpg->lport->qla_vha; 846 847 if (!target_depend_item(&se_tpg->tpg_group.cg_item)) { 848 atomic_set(&base_tpg->lport_tpg_enabled, 1); 849 qlt_enable_vha(base_vha); 850 } 851 complete(&base_tpg->tpg_base_comp); 852 } 853 854 static void tcm_qla2xxx_undepend_tpg(struct work_struct *work) 855 { 856 struct tcm_qla2xxx_tpg *base_tpg = container_of(work, 857 struct tcm_qla2xxx_tpg, tpg_base_work); 858 struct se_portal_group *se_tpg = &base_tpg->se_tpg; 859 struct scsi_qla_host *base_vha = base_tpg->lport->qla_vha; 860 861 if (!qlt_stop_phase1(base_vha->vha_tgt.qla_tgt)) { 862 atomic_set(&base_tpg->lport_tpg_enabled, 0); 863 target_undepend_item(&se_tpg->tpg_group.cg_item); 864 } 865 complete(&base_tpg->tpg_base_comp); 866 } 867 868 static ssize_t tcm_qla2xxx_tpg_store_enable( 869 struct se_portal_group *se_tpg, 870 const char *page, 871 size_t count) 872 { 873 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 874 struct tcm_qla2xxx_tpg, se_tpg); 875 unsigned long op; 876 int rc; 877 878 rc = kstrtoul(page, 0, &op); 879 if (rc < 0) { 880 pr_err("kstrtoul() returned %d\n", rc); 881 return -EINVAL; 882 } 883 if ((op != 1) && (op != 0)) { 884 pr_err("Illegal value for tpg_enable: %lu\n", op); 885 return -EINVAL; 886 } 887 if (op) { 888 if (atomic_read(&tpg->lport_tpg_enabled)) 889 return -EEXIST; 890 891 INIT_WORK(&tpg->tpg_base_work, tcm_qla2xxx_depend_tpg); 892 } else { 893 if (!atomic_read(&tpg->lport_tpg_enabled)) 894 return count; 895 896 INIT_WORK(&tpg->tpg_base_work, tcm_qla2xxx_undepend_tpg); 897 } 898 init_completion(&tpg->tpg_base_comp); 899 schedule_work(&tpg->tpg_base_work); 900 wait_for_completion(&tpg->tpg_base_comp); 901 902 if (op) { 903 if (!atomic_read(&tpg->lport_tpg_enabled)) 904 return -ENODEV; 905 } else { 906 if (atomic_read(&tpg->lport_tpg_enabled)) 907 return -EPERM; 908 } 909 return count; 910 } 911 912 TF_TPG_BASE_ATTR(tcm_qla2xxx, enable, S_IRUGO | S_IWUSR); 913 914 static ssize_t tcm_qla2xxx_tpg_show_dynamic_sessions( 915 struct se_portal_group *se_tpg, 916 char *page) 917 { 918 return target_show_dynamic_sessions(se_tpg, page); 919 } 920 921 TF_TPG_BASE_ATTR_RO(tcm_qla2xxx, dynamic_sessions); 922 923 static ssize_t tcm_qla2xxx_tpg_store_fabric_prot_type( 924 struct se_portal_group *se_tpg, 925 const char *page, 926 size_t count) 927 { 928 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 929 struct tcm_qla2xxx_tpg, se_tpg); 930 unsigned long val; 931 int ret = kstrtoul(page, 0, &val); 932 933 if (ret) { 934 pr_err("kstrtoul() returned %d for fabric_prot_type\n", ret); 935 return ret; 936 } 937 if (val != 0 && val != 1 && val != 3) { 938 pr_err("Invalid qla2xxx fabric_prot_type: %lu\n", val); 939 return -EINVAL; 940 } 941 tpg->tpg_attrib.fabric_prot_type = val; 942 943 return count; 944 } 945 946 static ssize_t tcm_qla2xxx_tpg_show_fabric_prot_type( 947 struct se_portal_group *se_tpg, 948 char *page) 949 { 950 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 951 struct tcm_qla2xxx_tpg, se_tpg); 952 953 return sprintf(page, "%d\n", tpg->tpg_attrib.fabric_prot_type); 954 } 955 TF_TPG_BASE_ATTR(tcm_qla2xxx, fabric_prot_type, S_IRUGO | S_IWUSR); 956 957 static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = { 958 &tcm_qla2xxx_tpg_enable.attr, 959 &tcm_qla2xxx_tpg_dynamic_sessions.attr, 960 &tcm_qla2xxx_tpg_fabric_prot_type.attr, 961 NULL, 962 }; 963 964 static struct se_portal_group *tcm_qla2xxx_make_tpg( 965 struct se_wwn *wwn, 966 struct config_group *group, 967 const char *name) 968 { 969 struct tcm_qla2xxx_lport *lport = container_of(wwn, 970 struct tcm_qla2xxx_lport, lport_wwn); 971 struct tcm_qla2xxx_tpg *tpg; 972 unsigned long tpgt; 973 int ret; 974 975 if (strstr(name, "tpgt_") != name) 976 return ERR_PTR(-EINVAL); 977 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX) 978 return ERR_PTR(-EINVAL); 979 980 if ((tpgt != 1)) { 981 pr_err("In non NPIV mode, a single TPG=1 is used for HW port mappings\n"); 982 return ERR_PTR(-ENOSYS); 983 } 984 985 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL); 986 if (!tpg) { 987 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n"); 988 return ERR_PTR(-ENOMEM); 989 } 990 tpg->lport = lport; 991 tpg->lport_tpgt = tpgt; 992 /* 993 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic 994 * NodeACLs 995 */ 996 tpg->tpg_attrib.generate_node_acls = 1; 997 tpg->tpg_attrib.demo_mode_write_protect = 1; 998 tpg->tpg_attrib.cache_dynamic_acls = 1; 999 tpg->tpg_attrib.demo_mode_login_only = 1; 1000 1001 ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP); 1002 if (ret < 0) { 1003 kfree(tpg); 1004 return NULL; 1005 } 1006 1007 lport->tpg_1 = tpg; 1008 1009 return &tpg->se_tpg; 1010 } 1011 1012 static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg) 1013 { 1014 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1015 struct tcm_qla2xxx_tpg, se_tpg); 1016 struct tcm_qla2xxx_lport *lport = tpg->lport; 1017 struct scsi_qla_host *vha = lport->qla_vha; 1018 /* 1019 * Call into qla2x_target.c LLD logic to shutdown the active 1020 * FC Nexuses and disable target mode operation for this qla_hw_data 1021 */ 1022 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stop) 1023 qlt_stop_phase1(vha->vha_tgt.qla_tgt); 1024 1025 core_tpg_deregister(se_tpg); 1026 /* 1027 * Clear local TPG=1 pointer for non NPIV mode. 1028 */ 1029 lport->tpg_1 = NULL; 1030 kfree(tpg); 1031 } 1032 1033 static ssize_t tcm_qla2xxx_npiv_tpg_show_enable( 1034 struct se_portal_group *se_tpg, 1035 char *page) 1036 { 1037 return tcm_qla2xxx_tpg_show_enable(se_tpg, page); 1038 } 1039 1040 static ssize_t tcm_qla2xxx_npiv_tpg_store_enable( 1041 struct se_portal_group *se_tpg, 1042 const char *page, 1043 size_t count) 1044 { 1045 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn; 1046 struct tcm_qla2xxx_lport *lport = container_of(se_wwn, 1047 struct tcm_qla2xxx_lport, lport_wwn); 1048 struct scsi_qla_host *vha = lport->qla_vha; 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 atomic_set(&tpg->lport_tpg_enabled, 1); 1068 qlt_enable_vha(vha); 1069 } else { 1070 if (!atomic_read(&tpg->lport_tpg_enabled)) 1071 return count; 1072 1073 atomic_set(&tpg->lport_tpg_enabled, 0); 1074 qlt_stop_phase1(vha->vha_tgt.qla_tgt); 1075 } 1076 1077 return count; 1078 } 1079 1080 TF_TPG_BASE_ATTR(tcm_qla2xxx_npiv, enable, S_IRUGO | S_IWUSR); 1081 1082 static struct configfs_attribute *tcm_qla2xxx_npiv_tpg_attrs[] = { 1083 &tcm_qla2xxx_npiv_tpg_enable.attr, 1084 NULL, 1085 }; 1086 1087 static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg( 1088 struct se_wwn *wwn, 1089 struct config_group *group, 1090 const char *name) 1091 { 1092 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1093 struct tcm_qla2xxx_lport, lport_wwn); 1094 struct tcm_qla2xxx_tpg *tpg; 1095 unsigned long tpgt; 1096 int ret; 1097 1098 if (strstr(name, "tpgt_") != name) 1099 return ERR_PTR(-EINVAL); 1100 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX) 1101 return ERR_PTR(-EINVAL); 1102 1103 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL); 1104 if (!tpg) { 1105 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n"); 1106 return ERR_PTR(-ENOMEM); 1107 } 1108 tpg->lport = lport; 1109 tpg->lport_tpgt = tpgt; 1110 1111 /* 1112 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic 1113 * NodeACLs 1114 */ 1115 tpg->tpg_attrib.generate_node_acls = 1; 1116 tpg->tpg_attrib.demo_mode_write_protect = 1; 1117 tpg->tpg_attrib.cache_dynamic_acls = 1; 1118 tpg->tpg_attrib.demo_mode_login_only = 1; 1119 1120 ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP); 1121 if (ret < 0) { 1122 kfree(tpg); 1123 return NULL; 1124 } 1125 lport->tpg_1 = tpg; 1126 return &tpg->se_tpg; 1127 } 1128 1129 /* 1130 * Expected to be called with struct qla_hw_data->hardware_lock held 1131 */ 1132 static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_s_id( 1133 scsi_qla_host_t *vha, 1134 const uint8_t *s_id) 1135 { 1136 struct tcm_qla2xxx_lport *lport; 1137 struct se_node_acl *se_nacl; 1138 struct tcm_qla2xxx_nacl *nacl; 1139 u32 key; 1140 1141 lport = vha->vha_tgt.target_lport_ptr; 1142 if (!lport) { 1143 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1144 dump_stack(); 1145 return NULL; 1146 } 1147 1148 key = sid_to_key(s_id); 1149 pr_debug("find_sess_by_s_id: 0x%06x\n", key); 1150 1151 se_nacl = btree_lookup32(&lport->lport_fcport_map, key); 1152 if (!se_nacl) { 1153 pr_debug("Unable to locate s_id: 0x%06x\n", key); 1154 return NULL; 1155 } 1156 pr_debug("find_sess_by_s_id: located se_nacl: %p, initiatorname: %s\n", 1157 se_nacl, se_nacl->initiatorname); 1158 1159 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1160 if (!nacl->qla_tgt_sess) { 1161 pr_err("Unable to locate struct qla_tgt_sess\n"); 1162 return NULL; 1163 } 1164 1165 return nacl->qla_tgt_sess; 1166 } 1167 1168 /* 1169 * Expected to be called with struct qla_hw_data->hardware_lock held 1170 */ 1171 static void tcm_qla2xxx_set_sess_by_s_id( 1172 struct tcm_qla2xxx_lport *lport, 1173 struct se_node_acl *new_se_nacl, 1174 struct tcm_qla2xxx_nacl *nacl, 1175 struct se_session *se_sess, 1176 struct qla_tgt_sess *qla_tgt_sess, 1177 uint8_t *s_id) 1178 { 1179 u32 key; 1180 void *slot; 1181 int rc; 1182 1183 key = sid_to_key(s_id); 1184 pr_debug("set_sess_by_s_id: %06x\n", key); 1185 1186 slot = btree_lookup32(&lport->lport_fcport_map, key); 1187 if (!slot) { 1188 if (new_se_nacl) { 1189 pr_debug("Setting up new fc_port entry to new_se_nacl\n"); 1190 nacl->nport_id = key; 1191 rc = btree_insert32(&lport->lport_fcport_map, key, 1192 new_se_nacl, GFP_ATOMIC); 1193 if (rc) 1194 printk(KERN_ERR "Unable to insert s_id into fcport_map: %06x\n", 1195 (int)key); 1196 } else { 1197 pr_debug("Wiping nonexisting fc_port entry\n"); 1198 } 1199 1200 qla_tgt_sess->se_sess = se_sess; 1201 nacl->qla_tgt_sess = qla_tgt_sess; 1202 return; 1203 } 1204 1205 if (nacl->qla_tgt_sess) { 1206 if (new_se_nacl == NULL) { 1207 pr_debug("Clearing existing nacl->qla_tgt_sess and fc_port entry\n"); 1208 btree_remove32(&lport->lport_fcport_map, key); 1209 nacl->qla_tgt_sess = NULL; 1210 return; 1211 } 1212 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_port entry\n"); 1213 btree_update32(&lport->lport_fcport_map, key, new_se_nacl); 1214 qla_tgt_sess->se_sess = se_sess; 1215 nacl->qla_tgt_sess = qla_tgt_sess; 1216 return; 1217 } 1218 1219 if (new_se_nacl == NULL) { 1220 pr_debug("Clearing existing fc_port entry\n"); 1221 btree_remove32(&lport->lport_fcport_map, key); 1222 return; 1223 } 1224 1225 pr_debug("Replacing existing fc_port entry w/o active nacl->qla_tgt_sess\n"); 1226 btree_update32(&lport->lport_fcport_map, key, new_se_nacl); 1227 qla_tgt_sess->se_sess = se_sess; 1228 nacl->qla_tgt_sess = qla_tgt_sess; 1229 1230 pr_debug("Setup nacl->qla_tgt_sess %p by s_id for se_nacl: %p, initiatorname: %s\n", 1231 nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname); 1232 } 1233 1234 /* 1235 * Expected to be called with struct qla_hw_data->hardware_lock held 1236 */ 1237 static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_loop_id( 1238 scsi_qla_host_t *vha, 1239 const uint16_t loop_id) 1240 { 1241 struct tcm_qla2xxx_lport *lport; 1242 struct se_node_acl *se_nacl; 1243 struct tcm_qla2xxx_nacl *nacl; 1244 struct tcm_qla2xxx_fc_loopid *fc_loopid; 1245 1246 lport = vha->vha_tgt.target_lport_ptr; 1247 if (!lport) { 1248 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1249 dump_stack(); 1250 return NULL; 1251 } 1252 1253 pr_debug("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id); 1254 1255 fc_loopid = lport->lport_loopid_map + loop_id; 1256 se_nacl = fc_loopid->se_nacl; 1257 if (!se_nacl) { 1258 pr_debug("Unable to locate se_nacl by loop_id: 0x%04x\n", 1259 loop_id); 1260 return NULL; 1261 } 1262 1263 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1264 1265 if (!nacl->qla_tgt_sess) { 1266 pr_err("Unable to locate struct qla_tgt_sess\n"); 1267 return NULL; 1268 } 1269 1270 return nacl->qla_tgt_sess; 1271 } 1272 1273 /* 1274 * Expected to be called with struct qla_hw_data->hardware_lock held 1275 */ 1276 static void tcm_qla2xxx_set_sess_by_loop_id( 1277 struct tcm_qla2xxx_lport *lport, 1278 struct se_node_acl *new_se_nacl, 1279 struct tcm_qla2xxx_nacl *nacl, 1280 struct se_session *se_sess, 1281 struct qla_tgt_sess *qla_tgt_sess, 1282 uint16_t loop_id) 1283 { 1284 struct se_node_acl *saved_nacl; 1285 struct tcm_qla2xxx_fc_loopid *fc_loopid; 1286 1287 pr_debug("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id); 1288 1289 fc_loopid = &((struct tcm_qla2xxx_fc_loopid *) 1290 lport->lport_loopid_map)[loop_id]; 1291 1292 saved_nacl = fc_loopid->se_nacl; 1293 if (!saved_nacl) { 1294 pr_debug("Setting up new fc_loopid->se_nacl to new_se_nacl\n"); 1295 fc_loopid->se_nacl = new_se_nacl; 1296 if (qla_tgt_sess->se_sess != se_sess) 1297 qla_tgt_sess->se_sess = se_sess; 1298 if (nacl->qla_tgt_sess != qla_tgt_sess) 1299 nacl->qla_tgt_sess = qla_tgt_sess; 1300 return; 1301 } 1302 1303 if (nacl->qla_tgt_sess) { 1304 if (new_se_nacl == NULL) { 1305 pr_debug("Clearing nacl->qla_tgt_sess and fc_loopid->se_nacl\n"); 1306 fc_loopid->se_nacl = NULL; 1307 nacl->qla_tgt_sess = NULL; 1308 return; 1309 } 1310 1311 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_loopid->se_nacl\n"); 1312 fc_loopid->se_nacl = new_se_nacl; 1313 if (qla_tgt_sess->se_sess != se_sess) 1314 qla_tgt_sess->se_sess = se_sess; 1315 if (nacl->qla_tgt_sess != qla_tgt_sess) 1316 nacl->qla_tgt_sess = qla_tgt_sess; 1317 return; 1318 } 1319 1320 if (new_se_nacl == NULL) { 1321 pr_debug("Clearing fc_loopid->se_nacl\n"); 1322 fc_loopid->se_nacl = NULL; 1323 return; 1324 } 1325 1326 pr_debug("Replacing existing fc_loopid->se_nacl w/o active nacl->qla_tgt_sess\n"); 1327 fc_loopid->se_nacl = new_se_nacl; 1328 if (qla_tgt_sess->se_sess != se_sess) 1329 qla_tgt_sess->se_sess = se_sess; 1330 if (nacl->qla_tgt_sess != qla_tgt_sess) 1331 nacl->qla_tgt_sess = qla_tgt_sess; 1332 1333 pr_debug("Setup nacl->qla_tgt_sess %p by loop_id for se_nacl: %p, initiatorname: %s\n", 1334 nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname); 1335 } 1336 1337 /* 1338 * Should always be called with qla_hw_data->hardware_lock held. 1339 */ 1340 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *lport, 1341 struct tcm_qla2xxx_nacl *nacl, struct qla_tgt_sess *sess) 1342 { 1343 struct se_session *se_sess = sess->se_sess; 1344 unsigned char be_sid[3]; 1345 1346 be_sid[0] = sess->s_id.b.domain; 1347 be_sid[1] = sess->s_id.b.area; 1348 be_sid[2] = sess->s_id.b.al_pa; 1349 1350 tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess, 1351 sess, be_sid); 1352 tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess, 1353 sess, sess->loop_id); 1354 } 1355 1356 static void tcm_qla2xxx_free_session(struct qla_tgt_sess *sess) 1357 { 1358 struct qla_tgt *tgt = sess->tgt; 1359 struct qla_hw_data *ha = tgt->ha; 1360 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev); 1361 struct se_session *se_sess; 1362 struct tcm_qla2xxx_lport *lport; 1363 1364 BUG_ON(in_interrupt()); 1365 1366 se_sess = sess->se_sess; 1367 if (!se_sess) { 1368 pr_err("struct qla_tgt_sess->se_sess is NULL\n"); 1369 dump_stack(); 1370 return; 1371 } 1372 1373 lport = vha->vha_tgt.target_lport_ptr; 1374 if (!lport) { 1375 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1376 dump_stack(); 1377 return; 1378 } 1379 target_wait_for_sess_cmds(se_sess); 1380 1381 transport_deregister_session_configfs(sess->se_sess); 1382 transport_deregister_session(sess->se_sess); 1383 } 1384 1385 /* 1386 * Called via qlt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl() 1387 * to locate struct se_node_acl 1388 */ 1389 static int tcm_qla2xxx_check_initiator_node_acl( 1390 scsi_qla_host_t *vha, 1391 unsigned char *fc_wwpn, 1392 void *qla_tgt_sess, 1393 uint8_t *s_id, 1394 uint16_t loop_id) 1395 { 1396 struct qla_hw_data *ha = vha->hw; 1397 struct tcm_qla2xxx_lport *lport; 1398 struct tcm_qla2xxx_tpg *tpg; 1399 struct tcm_qla2xxx_nacl *nacl; 1400 struct se_portal_group *se_tpg; 1401 struct se_node_acl *se_nacl; 1402 struct se_session *se_sess; 1403 struct qla_tgt_sess *sess = qla_tgt_sess; 1404 unsigned char port_name[36]; 1405 unsigned long flags; 1406 int num_tags = (ha->fw_xcb_count) ? ha->fw_xcb_count : 1407 TCM_QLA2XXX_DEFAULT_TAGS; 1408 1409 lport = vha->vha_tgt.target_lport_ptr; 1410 if (!lport) { 1411 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1412 dump_stack(); 1413 return -EINVAL; 1414 } 1415 /* 1416 * Locate the TPG=1 reference.. 1417 */ 1418 tpg = lport->tpg_1; 1419 if (!tpg) { 1420 pr_err("Unable to lcoate struct tcm_qla2xxx_lport->tpg_1\n"); 1421 return -EINVAL; 1422 } 1423 se_tpg = &tpg->se_tpg; 1424 1425 se_sess = transport_init_session_tags(num_tags, 1426 sizeof(struct qla_tgt_cmd), 1427 TARGET_PROT_ALL); 1428 if (IS_ERR(se_sess)) { 1429 pr_err("Unable to initialize struct se_session\n"); 1430 return PTR_ERR(se_sess); 1431 } 1432 /* 1433 * Format the FCP Initiator port_name into colon seperated values to 1434 * match the format by tcm_qla2xxx explict ConfigFS NodeACLs. 1435 */ 1436 memset(&port_name, 0, 36); 1437 snprintf(port_name, sizeof(port_name), "%8phC", fc_wwpn); 1438 /* 1439 * Locate our struct se_node_acl either from an explict NodeACL created 1440 * via ConfigFS, or via running in TPG demo mode. 1441 */ 1442 se_sess->se_node_acl = core_tpg_check_initiator_node_acl(se_tpg, 1443 port_name); 1444 if (!se_sess->se_node_acl) { 1445 transport_free_session(se_sess); 1446 return -EINVAL; 1447 } 1448 se_nacl = se_sess->se_node_acl; 1449 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1450 /* 1451 * And now setup the new se_nacl and session pointers into our HW lport 1452 * mappings for fabric S_ID and LOOP_ID. 1453 */ 1454 spin_lock_irqsave(&ha->hardware_lock, flags); 1455 tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl, se_sess, 1456 qla_tgt_sess, s_id); 1457 tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl, se_sess, 1458 qla_tgt_sess, loop_id); 1459 spin_unlock_irqrestore(&ha->hardware_lock, flags); 1460 /* 1461 * Finally register the new FC Nexus with TCM 1462 */ 1463 transport_register_session(se_nacl->se_tpg, se_nacl, se_sess, sess); 1464 1465 return 0; 1466 } 1467 1468 static void tcm_qla2xxx_update_sess(struct qla_tgt_sess *sess, port_id_t s_id, 1469 uint16_t loop_id, bool conf_compl_supported) 1470 { 1471 struct qla_tgt *tgt = sess->tgt; 1472 struct qla_hw_data *ha = tgt->ha; 1473 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev); 1474 struct tcm_qla2xxx_lport *lport = vha->vha_tgt.target_lport_ptr; 1475 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl; 1476 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl, 1477 struct tcm_qla2xxx_nacl, se_node_acl); 1478 u32 key; 1479 1480 1481 if (sess->loop_id != loop_id || sess->s_id.b24 != s_id.b24) 1482 pr_info("Updating session %p from port %8phC loop_id %d -> %d s_id %x:%x:%x -> %x:%x:%x\n", 1483 sess, sess->port_name, 1484 sess->loop_id, loop_id, sess->s_id.b.domain, 1485 sess->s_id.b.area, sess->s_id.b.al_pa, s_id.b.domain, 1486 s_id.b.area, s_id.b.al_pa); 1487 1488 if (sess->loop_id != loop_id) { 1489 /* 1490 * Because we can shuffle loop IDs around and we 1491 * update different sessions non-atomically, we might 1492 * have overwritten this session's old loop ID 1493 * already, and we might end up overwriting some other 1494 * session that will be updated later. So we have to 1495 * be extra careful and we can't warn about those things... 1496 */ 1497 if (lport->lport_loopid_map[sess->loop_id].se_nacl == se_nacl) 1498 lport->lport_loopid_map[sess->loop_id].se_nacl = NULL; 1499 1500 lport->lport_loopid_map[loop_id].se_nacl = se_nacl; 1501 1502 sess->loop_id = loop_id; 1503 } 1504 1505 if (sess->s_id.b24 != s_id.b24) { 1506 key = (((u32) sess->s_id.b.domain << 16) | 1507 ((u32) sess->s_id.b.area << 8) | 1508 ((u32) sess->s_id.b.al_pa)); 1509 1510 if (btree_lookup32(&lport->lport_fcport_map, key)) 1511 WARN(btree_remove32(&lport->lport_fcport_map, key) != se_nacl, 1512 "Found wrong se_nacl when updating s_id %x:%x:%x\n", 1513 sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa); 1514 else 1515 WARN(1, "No lport_fcport_map entry for s_id %x:%x:%x\n", 1516 sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa); 1517 1518 key = (((u32) s_id.b.domain << 16) | 1519 ((u32) s_id.b.area << 8) | 1520 ((u32) s_id.b.al_pa)); 1521 1522 if (btree_lookup32(&lport->lport_fcport_map, key)) { 1523 WARN(1, "Already have lport_fcport_map entry for s_id %x:%x:%x\n", 1524 s_id.b.domain, s_id.b.area, s_id.b.al_pa); 1525 btree_update32(&lport->lport_fcport_map, key, se_nacl); 1526 } else { 1527 btree_insert32(&lport->lport_fcport_map, key, se_nacl, GFP_ATOMIC); 1528 } 1529 1530 sess->s_id = s_id; 1531 nacl->nport_id = key; 1532 } 1533 1534 sess->conf_compl_supported = conf_compl_supported; 1535 1536 /* Reset logout parameters to default */ 1537 sess->logout_on_delete = 1; 1538 sess->keep_nport_handle = 0; 1539 } 1540 1541 /* 1542 * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path. 1543 */ 1544 static struct qla_tgt_func_tmpl tcm_qla2xxx_template = { 1545 .handle_cmd = tcm_qla2xxx_handle_cmd, 1546 .handle_data = tcm_qla2xxx_handle_data, 1547 .handle_dif_err = tcm_qla2xxx_handle_dif_err, 1548 .handle_tmr = tcm_qla2xxx_handle_tmr, 1549 .free_cmd = tcm_qla2xxx_free_cmd, 1550 .free_mcmd = tcm_qla2xxx_free_mcmd, 1551 .free_session = tcm_qla2xxx_free_session, 1552 .update_sess = tcm_qla2xxx_update_sess, 1553 .check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl, 1554 .find_sess_by_s_id = tcm_qla2xxx_find_sess_by_s_id, 1555 .find_sess_by_loop_id = tcm_qla2xxx_find_sess_by_loop_id, 1556 .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map, 1557 .put_sess = tcm_qla2xxx_put_sess, 1558 .shutdown_sess = tcm_qla2xxx_shutdown_sess, 1559 }; 1560 1561 static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport) 1562 { 1563 int rc; 1564 1565 rc = btree_init32(&lport->lport_fcport_map); 1566 if (rc) { 1567 pr_err("Unable to initialize lport->lport_fcport_map btree\n"); 1568 return rc; 1569 } 1570 1571 lport->lport_loopid_map = vmalloc(sizeof(struct tcm_qla2xxx_fc_loopid) * 1572 65536); 1573 if (!lport->lport_loopid_map) { 1574 pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n", 1575 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536); 1576 btree_destroy32(&lport->lport_fcport_map); 1577 return -ENOMEM; 1578 } 1579 memset(lport->lport_loopid_map, 0, sizeof(struct tcm_qla2xxx_fc_loopid) 1580 * 65536); 1581 pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n", 1582 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536); 1583 return 0; 1584 } 1585 1586 static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha, 1587 void *target_lport_ptr, 1588 u64 npiv_wwpn, u64 npiv_wwnn) 1589 { 1590 struct qla_hw_data *ha = vha->hw; 1591 struct tcm_qla2xxx_lport *lport = 1592 (struct tcm_qla2xxx_lport *)target_lport_ptr; 1593 /* 1594 * Setup tgt_ops, local pointer to vha and target_lport_ptr 1595 */ 1596 ha->tgt.tgt_ops = &tcm_qla2xxx_template; 1597 vha->vha_tgt.target_lport_ptr = target_lport_ptr; 1598 lport->qla_vha = vha; 1599 1600 return 0; 1601 } 1602 1603 static struct se_wwn *tcm_qla2xxx_make_lport( 1604 struct target_fabric_configfs *tf, 1605 struct config_group *group, 1606 const char *name) 1607 { 1608 struct tcm_qla2xxx_lport *lport; 1609 u64 wwpn; 1610 int ret = -ENODEV; 1611 1612 if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0) 1613 return ERR_PTR(-EINVAL); 1614 1615 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL); 1616 if (!lport) { 1617 pr_err("Unable to allocate struct tcm_qla2xxx_lport\n"); 1618 return ERR_PTR(-ENOMEM); 1619 } 1620 lport->lport_wwpn = wwpn; 1621 tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN, 1622 wwpn); 1623 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) wwpn); 1624 1625 ret = tcm_qla2xxx_init_lport(lport); 1626 if (ret != 0) 1627 goto out; 1628 1629 ret = qlt_lport_register(lport, wwpn, 0, 0, 1630 tcm_qla2xxx_lport_register_cb); 1631 if (ret != 0) 1632 goto out_lport; 1633 1634 return &lport->lport_wwn; 1635 out_lport: 1636 vfree(lport->lport_loopid_map); 1637 btree_destroy32(&lport->lport_fcport_map); 1638 out: 1639 kfree(lport); 1640 return ERR_PTR(ret); 1641 } 1642 1643 static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn) 1644 { 1645 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1646 struct tcm_qla2xxx_lport, lport_wwn); 1647 struct scsi_qla_host *vha = lport->qla_vha; 1648 struct se_node_acl *node; 1649 u32 key = 0; 1650 1651 /* 1652 * Call into qla2x_target.c LLD logic to complete the 1653 * shutdown of struct qla_tgt after the call to 1654 * qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above.. 1655 */ 1656 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stopped) 1657 qlt_stop_phase2(vha->vha_tgt.qla_tgt); 1658 1659 qlt_lport_deregister(vha); 1660 1661 vfree(lport->lport_loopid_map); 1662 btree_for_each_safe32(&lport->lport_fcport_map, key, node) 1663 btree_remove32(&lport->lport_fcport_map, key); 1664 btree_destroy32(&lport->lport_fcport_map); 1665 kfree(lport); 1666 } 1667 1668 static int tcm_qla2xxx_lport_register_npiv_cb(struct scsi_qla_host *base_vha, 1669 void *target_lport_ptr, 1670 u64 npiv_wwpn, u64 npiv_wwnn) 1671 { 1672 struct fc_vport *vport; 1673 struct Scsi_Host *sh = base_vha->host; 1674 struct scsi_qla_host *npiv_vha; 1675 struct tcm_qla2xxx_lport *lport = 1676 (struct tcm_qla2xxx_lport *)target_lport_ptr; 1677 struct tcm_qla2xxx_lport *base_lport = 1678 (struct tcm_qla2xxx_lport *)base_vha->vha_tgt.target_lport_ptr; 1679 struct fc_vport_identifiers vport_id; 1680 1681 if (!qla_tgt_mode_enabled(base_vha)) { 1682 pr_err("qla2xxx base_vha not enabled for target mode\n"); 1683 return -EPERM; 1684 } 1685 1686 if (!base_lport || !base_lport->tpg_1 || 1687 !atomic_read(&base_lport->tpg_1->lport_tpg_enabled)) { 1688 pr_err("qla2xxx base_lport or tpg_1 not available\n"); 1689 return -EPERM; 1690 } 1691 1692 memset(&vport_id, 0, sizeof(vport_id)); 1693 vport_id.port_name = npiv_wwpn; 1694 vport_id.node_name = npiv_wwnn; 1695 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR; 1696 vport_id.vport_type = FC_PORTTYPE_NPIV; 1697 vport_id.disable = false; 1698 1699 vport = fc_vport_create(sh, 0, &vport_id); 1700 if (!vport) { 1701 pr_err("fc_vport_create failed for qla2xxx_npiv\n"); 1702 return -ENODEV; 1703 } 1704 /* 1705 * Setup local pointer to NPIV vhba + target_lport_ptr 1706 */ 1707 npiv_vha = (struct scsi_qla_host *)vport->dd_data; 1708 npiv_vha->vha_tgt.target_lport_ptr = target_lport_ptr; 1709 lport->qla_vha = npiv_vha; 1710 scsi_host_get(npiv_vha->host); 1711 return 0; 1712 } 1713 1714 1715 static struct se_wwn *tcm_qla2xxx_npiv_make_lport( 1716 struct target_fabric_configfs *tf, 1717 struct config_group *group, 1718 const char *name) 1719 { 1720 struct tcm_qla2xxx_lport *lport; 1721 u64 phys_wwpn, npiv_wwpn, npiv_wwnn; 1722 char *p, tmp[128]; 1723 int ret; 1724 1725 snprintf(tmp, 128, "%s", name); 1726 1727 p = strchr(tmp, '@'); 1728 if (!p) { 1729 pr_err("Unable to locate NPIV '@' seperator\n"); 1730 return ERR_PTR(-EINVAL); 1731 } 1732 *p++ = '\0'; 1733 1734 if (tcm_qla2xxx_parse_wwn(tmp, &phys_wwpn, 1) < 0) 1735 return ERR_PTR(-EINVAL); 1736 1737 if (tcm_qla2xxx_npiv_parse_wwn(p, strlen(p)+1, 1738 &npiv_wwpn, &npiv_wwnn) < 0) 1739 return ERR_PTR(-EINVAL); 1740 1741 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL); 1742 if (!lport) { 1743 pr_err("Unable to allocate struct tcm_qla2xxx_lport for NPIV\n"); 1744 return ERR_PTR(-ENOMEM); 1745 } 1746 lport->lport_npiv_wwpn = npiv_wwpn; 1747 lport->lport_npiv_wwnn = npiv_wwnn; 1748 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) npiv_wwpn); 1749 1750 ret = tcm_qla2xxx_init_lport(lport); 1751 if (ret != 0) 1752 goto out; 1753 1754 ret = qlt_lport_register(lport, phys_wwpn, npiv_wwpn, npiv_wwnn, 1755 tcm_qla2xxx_lport_register_npiv_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_npiv_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 *npiv_vha = lport->qla_vha; 1773 struct qla_hw_data *ha = npiv_vha->hw; 1774 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 1775 1776 scsi_host_put(npiv_vha->host); 1777 /* 1778 * Notify libfc that we want to release the vha->fc_vport 1779 */ 1780 fc_vport_terminate(npiv_vha->fc_vport); 1781 scsi_host_put(base_vha->host); 1782 kfree(lport); 1783 } 1784 1785 1786 static ssize_t tcm_qla2xxx_wwn_show_attr_version( 1787 struct target_fabric_configfs *tf, 1788 char *page) 1789 { 1790 return sprintf(page, 1791 "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s on " 1792 UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname, 1793 utsname()->machine); 1794 } 1795 1796 TF_WWN_ATTR_RO(tcm_qla2xxx, version); 1797 1798 static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = { 1799 &tcm_qla2xxx_wwn_version.attr, 1800 NULL, 1801 }; 1802 1803 static const struct target_core_fabric_ops tcm_qla2xxx_ops = { 1804 .module = THIS_MODULE, 1805 .name = "qla2xxx", 1806 .node_acl_size = sizeof(struct tcm_qla2xxx_nacl), 1807 /* 1808 * XXX: Limit assumes single page per scatter-gather-list entry. 1809 * Current maximum is ~4.9 MB per se_cmd->t_data_sg with PAGE_SIZE=4096 1810 */ 1811 .max_data_sg_nents = 1200, 1812 .get_fabric_name = tcm_qla2xxx_get_fabric_name, 1813 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn, 1814 .tpg_get_tag = tcm_qla2xxx_get_tag, 1815 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode, 1816 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache, 1817 .tpg_check_demo_mode_write_protect = 1818 tcm_qla2xxx_check_demo_write_protect, 1819 .tpg_check_prod_mode_write_protect = 1820 tcm_qla2xxx_check_prod_write_protect, 1821 .tpg_check_prot_fabric_only = tcm_qla2xxx_check_prot_fabric_only, 1822 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only, 1823 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index, 1824 .check_stop_free = tcm_qla2xxx_check_stop_free, 1825 .release_cmd = tcm_qla2xxx_release_cmd, 1826 .shutdown_session = tcm_qla2xxx_shutdown_session, 1827 .close_session = tcm_qla2xxx_close_session, 1828 .sess_get_index = tcm_qla2xxx_sess_get_index, 1829 .sess_get_initiator_sid = NULL, 1830 .write_pending = tcm_qla2xxx_write_pending, 1831 .write_pending_status = tcm_qla2xxx_write_pending_status, 1832 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs, 1833 .get_cmd_state = tcm_qla2xxx_get_cmd_state, 1834 .queue_data_in = tcm_qla2xxx_queue_data_in, 1835 .queue_status = tcm_qla2xxx_queue_status, 1836 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp, 1837 .aborted_task = tcm_qla2xxx_aborted_task, 1838 /* 1839 * Setup function pointers for generic logic in 1840 * target_core_fabric_configfs.c 1841 */ 1842 .fabric_make_wwn = tcm_qla2xxx_make_lport, 1843 .fabric_drop_wwn = tcm_qla2xxx_drop_lport, 1844 .fabric_make_tpg = tcm_qla2xxx_make_tpg, 1845 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg, 1846 .fabric_init_nodeacl = tcm_qla2xxx_init_nodeacl, 1847 1848 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs, 1849 .tfc_tpg_base_attrs = tcm_qla2xxx_tpg_attrs, 1850 .tfc_tpg_attrib_attrs = tcm_qla2xxx_tpg_attrib_attrs, 1851 }; 1852 1853 static const struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = { 1854 .module = THIS_MODULE, 1855 .name = "qla2xxx_npiv", 1856 .node_acl_size = sizeof(struct tcm_qla2xxx_nacl), 1857 .get_fabric_name = tcm_qla2xxx_npiv_get_fabric_name, 1858 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn, 1859 .tpg_get_tag = tcm_qla2xxx_get_tag, 1860 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode, 1861 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache, 1862 .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_demo_mode, 1863 .tpg_check_prod_mode_write_protect = 1864 tcm_qla2xxx_check_prod_write_protect, 1865 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only, 1866 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index, 1867 .check_stop_free = tcm_qla2xxx_check_stop_free, 1868 .release_cmd = tcm_qla2xxx_release_cmd, 1869 .shutdown_session = tcm_qla2xxx_shutdown_session, 1870 .close_session = tcm_qla2xxx_close_session, 1871 .sess_get_index = tcm_qla2xxx_sess_get_index, 1872 .sess_get_initiator_sid = NULL, 1873 .write_pending = tcm_qla2xxx_write_pending, 1874 .write_pending_status = tcm_qla2xxx_write_pending_status, 1875 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs, 1876 .get_cmd_state = tcm_qla2xxx_get_cmd_state, 1877 .queue_data_in = tcm_qla2xxx_queue_data_in, 1878 .queue_status = tcm_qla2xxx_queue_status, 1879 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp, 1880 .aborted_task = tcm_qla2xxx_aborted_task, 1881 /* 1882 * Setup function pointers for generic logic in 1883 * target_core_fabric_configfs.c 1884 */ 1885 .fabric_make_wwn = tcm_qla2xxx_npiv_make_lport, 1886 .fabric_drop_wwn = tcm_qla2xxx_npiv_drop_lport, 1887 .fabric_make_tpg = tcm_qla2xxx_npiv_make_tpg, 1888 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg, 1889 .fabric_init_nodeacl = tcm_qla2xxx_init_nodeacl, 1890 1891 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs, 1892 .tfc_tpg_base_attrs = tcm_qla2xxx_npiv_tpg_attrs, 1893 }; 1894 1895 static int tcm_qla2xxx_register_configfs(void) 1896 { 1897 int ret; 1898 1899 pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on " 1900 UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname, 1901 utsname()->machine); 1902 1903 ret = target_register_template(&tcm_qla2xxx_ops); 1904 if (ret) 1905 return ret; 1906 1907 ret = target_register_template(&tcm_qla2xxx_npiv_ops); 1908 if (ret) 1909 goto out_fabric; 1910 1911 tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free", 1912 WQ_MEM_RECLAIM, 0); 1913 if (!tcm_qla2xxx_free_wq) { 1914 ret = -ENOMEM; 1915 goto out_fabric_npiv; 1916 } 1917 1918 tcm_qla2xxx_cmd_wq = alloc_workqueue("tcm_qla2xxx_cmd", 0, 0); 1919 if (!tcm_qla2xxx_cmd_wq) { 1920 ret = -ENOMEM; 1921 goto out_free_wq; 1922 } 1923 1924 return 0; 1925 1926 out_free_wq: 1927 destroy_workqueue(tcm_qla2xxx_free_wq); 1928 out_fabric_npiv: 1929 target_unregister_template(&tcm_qla2xxx_npiv_ops); 1930 out_fabric: 1931 target_unregister_template(&tcm_qla2xxx_ops); 1932 return ret; 1933 } 1934 1935 static void tcm_qla2xxx_deregister_configfs(void) 1936 { 1937 destroy_workqueue(tcm_qla2xxx_cmd_wq); 1938 destroy_workqueue(tcm_qla2xxx_free_wq); 1939 1940 target_unregister_template(&tcm_qla2xxx_ops); 1941 target_unregister_template(&tcm_qla2xxx_npiv_ops); 1942 } 1943 1944 static int __init tcm_qla2xxx_init(void) 1945 { 1946 int ret; 1947 1948 ret = tcm_qla2xxx_register_configfs(); 1949 if (ret < 0) 1950 return ret; 1951 1952 return 0; 1953 } 1954 1955 static void __exit tcm_qla2xxx_exit(void) 1956 { 1957 tcm_qla2xxx_deregister_configfs(); 1958 } 1959 1960 MODULE_DESCRIPTION("TCM QLA24XX+ series NPIV enabled fabric driver"); 1961 MODULE_LICENSE("GPL"); 1962 module_init(tcm_qla2xxx_init); 1963 module_exit(tcm_qla2xxx_exit); 1964