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 <linux/utsname.h> 29 #include <linux/vmalloc.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 46 #include "qla_def.h" 47 #include "qla_target.h" 48 #include "tcm_qla2xxx.h" 49 50 static struct workqueue_struct *tcm_qla2xxx_free_wq; 51 static struct workqueue_struct *tcm_qla2xxx_cmd_wq; 52 53 /* 54 * Parse WWN. 55 * If strict, we require lower-case hex and colon separators to be sure 56 * the name is the same as what would be generated by ft_format_wwn() 57 * so the name and wwn are mapped one-to-one. 58 */ 59 static ssize_t tcm_qla2xxx_parse_wwn(const char *name, u64 *wwn, int strict) 60 { 61 const char *cp; 62 char c; 63 u32 nibble; 64 u32 byte = 0; 65 u32 pos = 0; 66 u32 err; 67 68 *wwn = 0; 69 for (cp = name; cp < &name[TCM_QLA2XXX_NAMELEN - 1]; cp++) { 70 c = *cp; 71 if (c == '\n' && cp[1] == '\0') 72 continue; 73 if (strict && pos++ == 2 && byte++ < 7) { 74 pos = 0; 75 if (c == ':') 76 continue; 77 err = 1; 78 goto fail; 79 } 80 if (c == '\0') { 81 err = 2; 82 if (strict && byte != 8) 83 goto fail; 84 return cp - name; 85 } 86 err = 3; 87 if (isdigit(c)) 88 nibble = c - '0'; 89 else if (isxdigit(c) && (islower(c) || !strict)) 90 nibble = tolower(c) - 'a' + 10; 91 else 92 goto fail; 93 *wwn = (*wwn << 4) | nibble; 94 } 95 err = 4; 96 fail: 97 pr_debug("err %u len %zu pos %u byte %u\n", 98 err, cp - name, pos, byte); 99 return -1; 100 } 101 102 static ssize_t tcm_qla2xxx_format_wwn(char *buf, size_t len, u64 wwn) 103 { 104 u8 b[8]; 105 106 put_unaligned_be64(wwn, b); 107 return snprintf(buf, len, 108 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x", 109 b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7]); 110 } 111 112 static char *tcm_qla2xxx_get_fabric_name(void) 113 { 114 return "qla2xxx"; 115 } 116 117 /* 118 * From drivers/scsi/scsi_transport_fc.c:fc_parse_wwn 119 */ 120 static int tcm_qla2xxx_npiv_extract_wwn(const char *ns, u64 *nm) 121 { 122 unsigned int i, j; 123 u8 wwn[8]; 124 125 memset(wwn, 0, sizeof(wwn)); 126 127 /* Validate and store the new name */ 128 for (i = 0, j = 0; i < 16; i++) { 129 int value; 130 131 value = hex_to_bin(*ns++); 132 if (value >= 0) 133 j = (j << 4) | value; 134 else 135 return -EINVAL; 136 137 if (i % 2) { 138 wwn[i/2] = j & 0xff; 139 j = 0; 140 } 141 } 142 143 *nm = wwn_to_u64(wwn); 144 return 0; 145 } 146 147 /* 148 * This parsing logic follows drivers/scsi/scsi_transport_fc.c: 149 * store_fc_host_vport_create() 150 */ 151 static int tcm_qla2xxx_npiv_parse_wwn( 152 const char *name, 153 size_t count, 154 u64 *wwpn, 155 u64 *wwnn) 156 { 157 unsigned int cnt = count; 158 int rc; 159 160 *wwpn = 0; 161 *wwnn = 0; 162 163 /* count may include a LF at end of string */ 164 if (name[cnt-1] == '\n' || name[cnt-1] == 0) 165 cnt--; 166 167 /* validate we have enough characters for WWPN */ 168 if ((cnt != (16+1+16)) || (name[16] != ':')) 169 return -EINVAL; 170 171 rc = tcm_qla2xxx_npiv_extract_wwn(&name[0], wwpn); 172 if (rc != 0) 173 return rc; 174 175 rc = tcm_qla2xxx_npiv_extract_wwn(&name[17], wwnn); 176 if (rc != 0) 177 return rc; 178 179 return 0; 180 } 181 182 static char *tcm_qla2xxx_npiv_get_fabric_name(void) 183 { 184 return "qla2xxx_npiv"; 185 } 186 187 static char *tcm_qla2xxx_get_fabric_wwn(struct se_portal_group *se_tpg) 188 { 189 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 190 struct tcm_qla2xxx_tpg, se_tpg); 191 struct tcm_qla2xxx_lport *lport = tpg->lport; 192 193 return lport->lport_naa_name; 194 } 195 196 static u16 tcm_qla2xxx_get_tag(struct se_portal_group *se_tpg) 197 { 198 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 199 struct tcm_qla2xxx_tpg, se_tpg); 200 return tpg->lport_tpgt; 201 } 202 203 static int tcm_qla2xxx_check_demo_mode(struct se_portal_group *se_tpg) 204 { 205 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 206 struct tcm_qla2xxx_tpg, se_tpg); 207 208 return tpg->tpg_attrib.generate_node_acls; 209 } 210 211 static int tcm_qla2xxx_check_demo_mode_cache(struct se_portal_group *se_tpg) 212 { 213 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 214 struct tcm_qla2xxx_tpg, se_tpg); 215 216 return tpg->tpg_attrib.cache_dynamic_acls; 217 } 218 219 static int tcm_qla2xxx_check_demo_write_protect(struct se_portal_group *se_tpg) 220 { 221 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 222 struct tcm_qla2xxx_tpg, se_tpg); 223 224 return tpg->tpg_attrib.demo_mode_write_protect; 225 } 226 227 static int tcm_qla2xxx_check_prod_write_protect(struct se_portal_group *se_tpg) 228 { 229 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 230 struct tcm_qla2xxx_tpg, se_tpg); 231 232 return tpg->tpg_attrib.prod_mode_write_protect; 233 } 234 235 static int tcm_qla2xxx_check_demo_mode_login_only(struct se_portal_group *se_tpg) 236 { 237 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 238 struct tcm_qla2xxx_tpg, se_tpg); 239 240 return tpg->tpg_attrib.demo_mode_login_only; 241 } 242 243 static int tcm_qla2xxx_check_prot_fabric_only(struct se_portal_group *se_tpg) 244 { 245 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 246 struct tcm_qla2xxx_tpg, se_tpg); 247 248 return tpg->tpg_attrib.fabric_prot_type; 249 } 250 251 static u32 tcm_qla2xxx_tpg_get_inst_index(struct se_portal_group *se_tpg) 252 { 253 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 254 struct tcm_qla2xxx_tpg, se_tpg); 255 256 return tpg->lport_tpgt; 257 } 258 259 static void tcm_qla2xxx_complete_mcmd(struct work_struct *work) 260 { 261 struct qla_tgt_mgmt_cmd *mcmd = container_of(work, 262 struct qla_tgt_mgmt_cmd, free_work); 263 264 transport_generic_free_cmd(&mcmd->se_cmd, 0); 265 } 266 267 /* 268 * Called from qla_target_template->free_mcmd(), and will call 269 * tcm_qla2xxx_release_cmd() via normal struct target_core_fabric_ops 270 * release callback. qla_hw_data->hardware_lock is expected to be held 271 */ 272 static void tcm_qla2xxx_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd) 273 { 274 INIT_WORK(&mcmd->free_work, tcm_qla2xxx_complete_mcmd); 275 queue_work(tcm_qla2xxx_free_wq, &mcmd->free_work); 276 } 277 278 static void tcm_qla2xxx_complete_free(struct work_struct *work) 279 { 280 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 281 282 cmd->cmd_in_wq = 0; 283 284 WARN_ON(cmd->trc_flags & TRC_CMD_FREE); 285 286 cmd->qpair->tgt_counters.qla_core_ret_sta_ctio++; 287 cmd->trc_flags |= TRC_CMD_FREE; 288 transport_generic_free_cmd(&cmd->se_cmd, 0); 289 } 290 291 /* 292 * Called from qla_target_template->free_cmd(), and will call 293 * tcm_qla2xxx_release_cmd via normal struct target_core_fabric_ops 294 * release callback. qla_hw_data->hardware_lock is expected to be held 295 */ 296 static void tcm_qla2xxx_free_cmd(struct qla_tgt_cmd *cmd) 297 { 298 cmd->qpair->tgt_counters.core_qla_free_cmd++; 299 cmd->cmd_in_wq = 1; 300 301 WARN_ON(cmd->trc_flags & TRC_CMD_DONE); 302 cmd->trc_flags |= TRC_CMD_DONE; 303 304 INIT_WORK(&cmd->work, tcm_qla2xxx_complete_free); 305 queue_work_on(smp_processor_id(), tcm_qla2xxx_free_wq, &cmd->work); 306 } 307 308 /* 309 * Called from struct target_core_fabric_ops->check_stop_free() context 310 */ 311 static int tcm_qla2xxx_check_stop_free(struct se_cmd *se_cmd) 312 { 313 struct qla_tgt_cmd *cmd; 314 315 if ((se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) == 0) { 316 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd); 317 cmd->trc_flags |= TRC_CMD_CHK_STOP; 318 } 319 320 return target_put_sess_cmd(se_cmd); 321 } 322 323 /* tcm_qla2xxx_release_cmd - Callback from TCM Core to release underlying 324 * fabric descriptor @se_cmd command to release 325 */ 326 static void tcm_qla2xxx_release_cmd(struct se_cmd *se_cmd) 327 { 328 struct qla_tgt_cmd *cmd; 329 330 if (se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) { 331 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd, 332 struct qla_tgt_mgmt_cmd, se_cmd); 333 qlt_free_mcmd(mcmd); 334 return; 335 } 336 337 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd); 338 qlt_free_cmd(cmd); 339 } 340 341 static void tcm_qla2xxx_release_session(struct kref *kref) 342 { 343 struct fc_port *sess = container_of(kref, 344 struct fc_port, sess_kref); 345 346 qlt_unreg_sess(sess); 347 } 348 349 static void tcm_qla2xxx_put_sess(struct fc_port *sess) 350 { 351 if (!sess) 352 return; 353 354 assert_spin_locked(&sess->vha->hw->tgt.sess_lock); 355 kref_put(&sess->sess_kref, tcm_qla2xxx_release_session); 356 } 357 358 static void tcm_qla2xxx_close_session(struct se_session *se_sess) 359 { 360 struct fc_port *sess = se_sess->fabric_sess_ptr; 361 struct scsi_qla_host *vha; 362 unsigned long flags; 363 364 BUG_ON(!sess); 365 vha = sess->vha; 366 367 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 368 target_sess_cmd_list_set_waiting(se_sess); 369 tcm_qla2xxx_put_sess(sess); 370 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 371 } 372 373 static u32 tcm_qla2xxx_sess_get_index(struct se_session *se_sess) 374 { 375 return 0; 376 } 377 378 static int tcm_qla2xxx_write_pending(struct se_cmd *se_cmd) 379 { 380 struct qla_tgt_cmd *cmd = container_of(se_cmd, 381 struct qla_tgt_cmd, se_cmd); 382 383 if (cmd->aborted) { 384 /* Cmd can loop during Q-full. tcm_qla2xxx_aborted_task 385 * can get ahead of this cmd. tcm_qla2xxx_aborted_task 386 * already kick start the free. 387 */ 388 pr_debug("write_pending aborted cmd[%p] refcount %d " 389 "transport_state %x, t_state %x, se_cmd_flags %x\n", 390 cmd, kref_read(&cmd->se_cmd.cmd_kref), 391 cmd->se_cmd.transport_state, 392 cmd->se_cmd.t_state, 393 cmd->se_cmd.se_cmd_flags); 394 return 0; 395 } 396 cmd->trc_flags |= TRC_XFR_RDY; 397 cmd->bufflen = se_cmd->data_length; 398 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd); 399 400 cmd->sg_cnt = se_cmd->t_data_nents; 401 cmd->sg = se_cmd->t_data_sg; 402 403 cmd->prot_sg_cnt = se_cmd->t_prot_nents; 404 cmd->prot_sg = se_cmd->t_prot_sg; 405 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size; 406 se_cmd->pi_err = 0; 407 408 /* 409 * qla_target.c:qlt_rdy_to_xfer() will call pci_map_sg() to setup 410 * the SGL mappings into PCIe memory for incoming FCP WRITE data. 411 */ 412 return qlt_rdy_to_xfer(cmd); 413 } 414 415 static int tcm_qla2xxx_write_pending_status(struct se_cmd *se_cmd) 416 { 417 unsigned long flags; 418 /* 419 * Check for WRITE_PENDING status to determine if we need to wait for 420 * CTIO aborts to be posted via hardware in tcm_qla2xxx_handle_data(). 421 */ 422 spin_lock_irqsave(&se_cmd->t_state_lock, flags); 423 if (se_cmd->t_state == TRANSPORT_WRITE_PENDING || 424 se_cmd->t_state == TRANSPORT_COMPLETE_QF_WP) { 425 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags); 426 wait_for_completion_timeout(&se_cmd->t_transport_stop_comp, 427 50); 428 return 0; 429 } 430 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags); 431 432 return 0; 433 } 434 435 static void tcm_qla2xxx_set_default_node_attrs(struct se_node_acl *nacl) 436 { 437 return; 438 } 439 440 static int tcm_qla2xxx_get_cmd_state(struct se_cmd *se_cmd) 441 { 442 if (!(se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB)) { 443 struct qla_tgt_cmd *cmd = container_of(se_cmd, 444 struct qla_tgt_cmd, se_cmd); 445 return cmd->state; 446 } 447 448 return 0; 449 } 450 451 /* 452 * Called from process context in qla_target.c:qlt_do_work() code 453 */ 454 static int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd, 455 unsigned char *cdb, uint32_t data_length, int fcp_task_attr, 456 int data_dir, int bidi) 457 { 458 struct se_cmd *se_cmd = &cmd->se_cmd; 459 struct se_session *se_sess; 460 struct fc_port *sess; 461 #ifdef CONFIG_TCM_QLA2XXX_DEBUG 462 struct se_portal_group *se_tpg; 463 struct tcm_qla2xxx_tpg *tpg; 464 #endif 465 int flags = TARGET_SCF_ACK_KREF; 466 467 if (bidi) 468 flags |= TARGET_SCF_BIDI_OP; 469 470 if (se_cmd->cpuid != WORK_CPU_UNBOUND) 471 flags |= TARGET_SCF_USE_CPUID; 472 473 sess = cmd->sess; 474 if (!sess) { 475 pr_err("Unable to locate struct fc_port from qla_tgt_cmd\n"); 476 return -EINVAL; 477 } 478 479 se_sess = sess->se_sess; 480 if (!se_sess) { 481 pr_err("Unable to locate active struct se_session\n"); 482 return -EINVAL; 483 } 484 485 #ifdef CONFIG_TCM_QLA2XXX_DEBUG 486 se_tpg = se_sess->se_tpg; 487 tpg = container_of(se_tpg, struct tcm_qla2xxx_tpg, se_tpg); 488 if (unlikely(tpg->tpg_attrib.jam_host)) { 489 /* return, and dont run target_submit_cmd,discarding command */ 490 return 0; 491 } 492 #endif 493 494 cmd->qpair->tgt_counters.qla_core_sbt_cmd++; 495 return target_submit_cmd(se_cmd, se_sess, cdb, &cmd->sense_buffer[0], 496 cmd->unpacked_lun, data_length, fcp_task_attr, 497 data_dir, flags); 498 } 499 500 static void tcm_qla2xxx_handle_data_work(struct work_struct *work) 501 { 502 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 503 504 /* 505 * Ensure that the complete FCP WRITE payload has been received. 506 * Otherwise return an exception via CHECK_CONDITION status. 507 */ 508 cmd->cmd_in_wq = 0; 509 510 cmd->qpair->tgt_counters.qla_core_ret_ctio++; 511 if (!cmd->write_data_transferred) { 512 /* 513 * Check if se_cmd has already been aborted via LUN_RESET, and 514 * waiting upon completion in tcm_qla2xxx_write_pending_status() 515 */ 516 if (cmd->se_cmd.transport_state & CMD_T_ABORTED) { 517 complete(&cmd->se_cmd.t_transport_stop_comp); 518 return; 519 } 520 521 switch (cmd->dif_err_code) { 522 case DIF_ERR_GRD: 523 cmd->se_cmd.pi_err = 524 TCM_LOGICAL_BLOCK_GUARD_CHECK_FAILED; 525 break; 526 case DIF_ERR_REF: 527 cmd->se_cmd.pi_err = 528 TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED; 529 break; 530 case DIF_ERR_APP: 531 cmd->se_cmd.pi_err = 532 TCM_LOGICAL_BLOCK_APP_TAG_CHECK_FAILED; 533 break; 534 case DIF_ERR_NONE: 535 default: 536 break; 537 } 538 539 if (cmd->se_cmd.pi_err) 540 transport_generic_request_failure(&cmd->se_cmd, 541 cmd->se_cmd.pi_err); 542 else 543 transport_generic_request_failure(&cmd->se_cmd, 544 TCM_CHECK_CONDITION_ABORT_CMD); 545 546 return; 547 } 548 549 return target_execute_cmd(&cmd->se_cmd); 550 } 551 552 /* 553 * Called from qla_target.c:qlt_do_ctio_completion() 554 */ 555 static void tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd) 556 { 557 cmd->trc_flags |= TRC_DATA_IN; 558 cmd->cmd_in_wq = 1; 559 INIT_WORK(&cmd->work, tcm_qla2xxx_handle_data_work); 560 queue_work_on(smp_processor_id(), tcm_qla2xxx_free_wq, &cmd->work); 561 } 562 563 static int tcm_qla2xxx_chk_dif_tags(uint32_t tag) 564 { 565 return 0; 566 } 567 568 static int tcm_qla2xxx_dif_tags(struct qla_tgt_cmd *cmd, 569 uint16_t *pfw_prot_opts) 570 { 571 struct se_cmd *se_cmd = &cmd->se_cmd; 572 573 if (!(se_cmd->prot_checks & TARGET_DIF_CHECK_GUARD)) 574 *pfw_prot_opts |= PO_DISABLE_GUARD_CHECK; 575 576 if (!(se_cmd->prot_checks & TARGET_DIF_CHECK_APPTAG)) 577 *pfw_prot_opts |= PO_DIS_APP_TAG_VALD; 578 579 return 0; 580 } 581 582 /* 583 * Called from qla_target.c:qlt_issue_task_mgmt() 584 */ 585 static int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *mcmd, u64 lun, 586 uint16_t tmr_func, uint32_t tag) 587 { 588 struct fc_port *sess = mcmd->sess; 589 struct se_cmd *se_cmd = &mcmd->se_cmd; 590 int transl_tmr_func = 0; 591 int flags = TARGET_SCF_ACK_KREF; 592 593 switch (tmr_func) { 594 case QLA_TGT_ABTS: 595 pr_debug("%ld: ABTS received\n", sess->vha->host_no); 596 transl_tmr_func = TMR_ABORT_TASK; 597 flags |= TARGET_SCF_LOOKUP_LUN_FROM_TAG; 598 break; 599 case QLA_TGT_2G_ABORT_TASK: 600 pr_debug("%ld: 2G Abort Task received\n", sess->vha->host_no); 601 transl_tmr_func = TMR_ABORT_TASK; 602 break; 603 case QLA_TGT_CLEAR_ACA: 604 pr_debug("%ld: CLEAR_ACA received\n", sess->vha->host_no); 605 transl_tmr_func = TMR_CLEAR_ACA; 606 break; 607 case QLA_TGT_TARGET_RESET: 608 pr_debug("%ld: TARGET_RESET received\n", sess->vha->host_no); 609 transl_tmr_func = TMR_TARGET_WARM_RESET; 610 break; 611 case QLA_TGT_LUN_RESET: 612 pr_debug("%ld: LUN_RESET received\n", sess->vha->host_no); 613 transl_tmr_func = TMR_LUN_RESET; 614 break; 615 case QLA_TGT_CLEAR_TS: 616 pr_debug("%ld: CLEAR_TS received\n", sess->vha->host_no); 617 transl_tmr_func = TMR_CLEAR_TASK_SET; 618 break; 619 case QLA_TGT_ABORT_TS: 620 pr_debug("%ld: ABORT_TS received\n", sess->vha->host_no); 621 transl_tmr_func = TMR_ABORT_TASK_SET; 622 break; 623 default: 624 pr_debug("%ld: Unknown task mgmt fn 0x%x\n", 625 sess->vha->host_no, tmr_func); 626 return -ENOSYS; 627 } 628 629 return target_submit_tmr(se_cmd, sess->se_sess, NULL, lun, mcmd, 630 transl_tmr_func, GFP_ATOMIC, tag, flags); 631 } 632 633 static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd) 634 { 635 struct qla_tgt_cmd *cmd = container_of(se_cmd, 636 struct qla_tgt_cmd, se_cmd); 637 638 if (cmd->aborted) { 639 /* Cmd can loop during Q-full. tcm_qla2xxx_aborted_task 640 * can get ahead of this cmd. tcm_qla2xxx_aborted_task 641 * already kick start the free. 642 */ 643 pr_debug("queue_data_in aborted cmd[%p] refcount %d " 644 "transport_state %x, t_state %x, se_cmd_flags %x\n", 645 cmd, kref_read(&cmd->se_cmd.cmd_kref), 646 cmd->se_cmd.transport_state, 647 cmd->se_cmd.t_state, 648 cmd->se_cmd.se_cmd_flags); 649 return 0; 650 } 651 652 cmd->trc_flags |= TRC_XMIT_DATA; 653 cmd->bufflen = se_cmd->data_length; 654 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd); 655 656 cmd->sg_cnt = se_cmd->t_data_nents; 657 cmd->sg = se_cmd->t_data_sg; 658 cmd->offset = 0; 659 660 cmd->prot_sg_cnt = se_cmd->t_prot_nents; 661 cmd->prot_sg = se_cmd->t_prot_sg; 662 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size; 663 se_cmd->pi_err = 0; 664 665 /* 666 * Now queue completed DATA_IN the qla2xxx LLD and response ring 667 */ 668 return qlt_xmit_response(cmd, QLA_TGT_XMIT_DATA|QLA_TGT_XMIT_STATUS, 669 se_cmd->scsi_status); 670 } 671 672 static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd) 673 { 674 struct qla_tgt_cmd *cmd = container_of(se_cmd, 675 struct qla_tgt_cmd, se_cmd); 676 int xmit_type = QLA_TGT_XMIT_STATUS; 677 678 if (cmd->aborted) { 679 /* 680 * Cmd can loop during Q-full. tcm_qla2xxx_aborted_task 681 * can get ahead of this cmd. tcm_qla2xxx_aborted_task 682 * already kick start the free. 683 */ 684 pr_debug( 685 "queue_data_in aborted cmd[%p] refcount %d transport_state %x, t_state %x, se_cmd_flags %x\n", 686 cmd, kref_read(&cmd->se_cmd.cmd_kref), 687 cmd->se_cmd.transport_state, cmd->se_cmd.t_state, 688 cmd->se_cmd.se_cmd_flags); 689 return 0; 690 } 691 cmd->bufflen = se_cmd->data_length; 692 cmd->sg = NULL; 693 cmd->sg_cnt = 0; 694 cmd->offset = 0; 695 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd); 696 if (cmd->trc_flags & TRC_XMIT_STATUS) { 697 pr_crit("Multiple calls for status = %p.\n", cmd); 698 dump_stack(); 699 } 700 cmd->trc_flags |= TRC_XMIT_STATUS; 701 702 if (se_cmd->data_direction == DMA_FROM_DEVICE) { 703 /* 704 * For FCP_READ with CHECK_CONDITION status, clear cmd->bufflen 705 * for qla_tgt_xmit_response LLD code 706 */ 707 if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) { 708 se_cmd->se_cmd_flags &= ~SCF_OVERFLOW_BIT; 709 se_cmd->residual_count = 0; 710 } 711 se_cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT; 712 se_cmd->residual_count += se_cmd->data_length; 713 714 cmd->bufflen = 0; 715 } 716 /* 717 * Now queue status response to qla2xxx LLD code and response ring 718 */ 719 return qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status); 720 } 721 722 static void tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd) 723 { 724 struct se_tmr_req *se_tmr = se_cmd->se_tmr_req; 725 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd, 726 struct qla_tgt_mgmt_cmd, se_cmd); 727 728 pr_debug("queue_tm_rsp: mcmd: %p func: 0x%02x response: 0x%02x\n", 729 mcmd, se_tmr->function, se_tmr->response); 730 /* 731 * Do translation between TCM TM response codes and 732 * QLA2xxx FC TM response codes. 733 */ 734 switch (se_tmr->response) { 735 case TMR_FUNCTION_COMPLETE: 736 mcmd->fc_tm_rsp = FC_TM_SUCCESS; 737 break; 738 case TMR_TASK_DOES_NOT_EXIST: 739 mcmd->fc_tm_rsp = FC_TM_BAD_CMD; 740 break; 741 case TMR_FUNCTION_REJECTED: 742 mcmd->fc_tm_rsp = FC_TM_REJECT; 743 break; 744 case TMR_LUN_DOES_NOT_EXIST: 745 default: 746 mcmd->fc_tm_rsp = FC_TM_FAILED; 747 break; 748 } 749 /* 750 * Queue the TM response to QLA2xxx LLD to build a 751 * CTIO response packet. 752 */ 753 qlt_xmit_tm_rsp(mcmd); 754 } 755 756 static void tcm_qla2xxx_aborted_task(struct se_cmd *se_cmd) 757 { 758 struct qla_tgt_cmd *cmd = container_of(se_cmd, 759 struct qla_tgt_cmd, se_cmd); 760 761 if (qlt_abort_cmd(cmd)) 762 return; 763 } 764 765 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *, 766 struct tcm_qla2xxx_nacl *, struct fc_port *); 767 /* 768 * Expected to be called with struct qla_hw_data->tgt.sess_lock held 769 */ 770 static void tcm_qla2xxx_clear_nacl_from_fcport_map(struct fc_port *sess) 771 { 772 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl; 773 struct se_portal_group *se_tpg = se_nacl->se_tpg; 774 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn; 775 struct tcm_qla2xxx_lport *lport = container_of(se_wwn, 776 struct tcm_qla2xxx_lport, lport_wwn); 777 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl, 778 struct tcm_qla2xxx_nacl, se_node_acl); 779 void *node; 780 781 pr_debug("fc_rport domain: port_id 0x%06x\n", nacl->nport_id); 782 783 node = btree_remove32(&lport->lport_fcport_map, nacl->nport_id); 784 if (WARN_ON(node && (node != se_nacl))) { 785 /* 786 * The nacl no longer matches what we think it should be. 787 * Most likely a new dynamic acl has been added while 788 * someone dropped the hardware lock. It clearly is a 789 * bug elsewhere, but this bit can't make things worse. 790 */ 791 btree_insert32(&lport->lport_fcport_map, nacl->nport_id, 792 node, GFP_ATOMIC); 793 } 794 795 pr_debug("Removed from fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%06x\n", 796 se_nacl, nacl->nport_wwnn, nacl->nport_id); 797 /* 798 * Now clear the se_nacl and session pointers from our HW lport lookup 799 * table mapping for this initiator's fabric S_ID and LOOP_ID entries. 800 * 801 * This is done ahead of callbacks into tcm_qla2xxx_free_session() -> 802 * target_wait_for_sess_cmds() before the session waits for outstanding 803 * I/O to complete, to avoid a race between session shutdown execution 804 * and incoming ATIOs or TMRs picking up a stale se_node_act reference. 805 */ 806 tcm_qla2xxx_clear_sess_lookup(lport, nacl, sess); 807 } 808 809 static void tcm_qla2xxx_shutdown_sess(struct fc_port *sess) 810 { 811 assert_spin_locked(&sess->vha->hw->tgt.sess_lock); 812 target_sess_cmd_list_set_waiting(sess->se_sess); 813 } 814 815 static int tcm_qla2xxx_init_nodeacl(struct se_node_acl *se_nacl, 816 const char *name) 817 { 818 struct tcm_qla2xxx_nacl *nacl = 819 container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 820 u64 wwnn; 821 822 if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0) 823 return -EINVAL; 824 825 nacl->nport_wwnn = wwnn; 826 tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn); 827 828 return 0; 829 } 830 831 /* Start items for tcm_qla2xxx_tpg_attrib_cit */ 832 833 #define DEF_QLA_TPG_ATTRIB(name) \ 834 \ 835 static ssize_t tcm_qla2xxx_tpg_attrib_##name##_show( \ 836 struct config_item *item, char *page) \ 837 { \ 838 struct se_portal_group *se_tpg = attrib_to_tpg(item); \ 839 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \ 840 struct tcm_qla2xxx_tpg, se_tpg); \ 841 \ 842 return sprintf(page, "%u\n", tpg->tpg_attrib.name); \ 843 } \ 844 \ 845 static ssize_t tcm_qla2xxx_tpg_attrib_##name##_store( \ 846 struct config_item *item, const char *page, size_t count) \ 847 { \ 848 struct se_portal_group *se_tpg = attrib_to_tpg(item); \ 849 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \ 850 struct tcm_qla2xxx_tpg, se_tpg); \ 851 struct tcm_qla2xxx_tpg_attrib *a = &tpg->tpg_attrib; \ 852 unsigned long val; \ 853 int ret; \ 854 \ 855 ret = kstrtoul(page, 0, &val); \ 856 if (ret < 0) { \ 857 pr_err("kstrtoul() failed with" \ 858 " ret: %d\n", ret); \ 859 return -EINVAL; \ 860 } \ 861 \ 862 if ((val != 0) && (val != 1)) { \ 863 pr_err("Illegal boolean value %lu\n", val); \ 864 return -EINVAL; \ 865 } \ 866 \ 867 a->name = val; \ 868 \ 869 return count; \ 870 } \ 871 CONFIGFS_ATTR(tcm_qla2xxx_tpg_attrib_, name) 872 873 DEF_QLA_TPG_ATTRIB(generate_node_acls); 874 DEF_QLA_TPG_ATTRIB(cache_dynamic_acls); 875 DEF_QLA_TPG_ATTRIB(demo_mode_write_protect); 876 DEF_QLA_TPG_ATTRIB(prod_mode_write_protect); 877 DEF_QLA_TPG_ATTRIB(demo_mode_login_only); 878 #ifdef CONFIG_TCM_QLA2XXX_DEBUG 879 DEF_QLA_TPG_ATTRIB(jam_host); 880 #endif 881 882 static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = { 883 &tcm_qla2xxx_tpg_attrib_attr_generate_node_acls, 884 &tcm_qla2xxx_tpg_attrib_attr_cache_dynamic_acls, 885 &tcm_qla2xxx_tpg_attrib_attr_demo_mode_write_protect, 886 &tcm_qla2xxx_tpg_attrib_attr_prod_mode_write_protect, 887 &tcm_qla2xxx_tpg_attrib_attr_demo_mode_login_only, 888 #ifdef CONFIG_TCM_QLA2XXX_DEBUG 889 &tcm_qla2xxx_tpg_attrib_attr_jam_host, 890 #endif 891 NULL, 892 }; 893 894 /* End items for tcm_qla2xxx_tpg_attrib_cit */ 895 896 static ssize_t tcm_qla2xxx_tpg_enable_show(struct config_item *item, 897 char *page) 898 { 899 struct se_portal_group *se_tpg = to_tpg(item); 900 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 901 struct tcm_qla2xxx_tpg, se_tpg); 902 903 return snprintf(page, PAGE_SIZE, "%d\n", 904 atomic_read(&tpg->lport_tpg_enabled)); 905 } 906 907 static void tcm_qla2xxx_depend_tpg(struct work_struct *work) 908 { 909 struct tcm_qla2xxx_tpg *base_tpg = container_of(work, 910 struct tcm_qla2xxx_tpg, tpg_base_work); 911 struct se_portal_group *se_tpg = &base_tpg->se_tpg; 912 struct scsi_qla_host *base_vha = base_tpg->lport->qla_vha; 913 914 if (!target_depend_item(&se_tpg->tpg_group.cg_item)) { 915 atomic_set(&base_tpg->lport_tpg_enabled, 1); 916 qlt_enable_vha(base_vha); 917 } 918 complete(&base_tpg->tpg_base_comp); 919 } 920 921 static void tcm_qla2xxx_undepend_tpg(struct work_struct *work) 922 { 923 struct tcm_qla2xxx_tpg *base_tpg = container_of(work, 924 struct tcm_qla2xxx_tpg, tpg_base_work); 925 struct se_portal_group *se_tpg = &base_tpg->se_tpg; 926 struct scsi_qla_host *base_vha = base_tpg->lport->qla_vha; 927 928 if (!qlt_stop_phase1(base_vha->vha_tgt.qla_tgt)) { 929 atomic_set(&base_tpg->lport_tpg_enabled, 0); 930 target_undepend_item(&se_tpg->tpg_group.cg_item); 931 } 932 complete(&base_tpg->tpg_base_comp); 933 } 934 935 static ssize_t tcm_qla2xxx_tpg_enable_store(struct config_item *item, 936 const char *page, size_t count) 937 { 938 struct se_portal_group *se_tpg = to_tpg(item); 939 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 940 struct tcm_qla2xxx_tpg, se_tpg); 941 unsigned long op; 942 int rc; 943 944 rc = kstrtoul(page, 0, &op); 945 if (rc < 0) { 946 pr_err("kstrtoul() returned %d\n", rc); 947 return -EINVAL; 948 } 949 if ((op != 1) && (op != 0)) { 950 pr_err("Illegal value for tpg_enable: %lu\n", op); 951 return -EINVAL; 952 } 953 if (op) { 954 if (atomic_read(&tpg->lport_tpg_enabled)) 955 return -EEXIST; 956 957 INIT_WORK(&tpg->tpg_base_work, tcm_qla2xxx_depend_tpg); 958 } else { 959 if (!atomic_read(&tpg->lport_tpg_enabled)) 960 return count; 961 962 INIT_WORK(&tpg->tpg_base_work, tcm_qla2xxx_undepend_tpg); 963 } 964 init_completion(&tpg->tpg_base_comp); 965 schedule_work(&tpg->tpg_base_work); 966 wait_for_completion(&tpg->tpg_base_comp); 967 968 if (op) { 969 if (!atomic_read(&tpg->lport_tpg_enabled)) 970 return -ENODEV; 971 } else { 972 if (atomic_read(&tpg->lport_tpg_enabled)) 973 return -EPERM; 974 } 975 return count; 976 } 977 978 static ssize_t tcm_qla2xxx_tpg_dynamic_sessions_show(struct config_item *item, 979 char *page) 980 { 981 return target_show_dynamic_sessions(to_tpg(item), page); 982 } 983 984 static ssize_t tcm_qla2xxx_tpg_fabric_prot_type_store(struct config_item *item, 985 const char *page, size_t count) 986 { 987 struct se_portal_group *se_tpg = to_tpg(item); 988 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 989 struct tcm_qla2xxx_tpg, se_tpg); 990 unsigned long val; 991 int ret = kstrtoul(page, 0, &val); 992 993 if (ret) { 994 pr_err("kstrtoul() returned %d for fabric_prot_type\n", ret); 995 return ret; 996 } 997 if (val != 0 && val != 1 && val != 3) { 998 pr_err("Invalid qla2xxx fabric_prot_type: %lu\n", val); 999 return -EINVAL; 1000 } 1001 tpg->tpg_attrib.fabric_prot_type = val; 1002 1003 return count; 1004 } 1005 1006 static ssize_t tcm_qla2xxx_tpg_fabric_prot_type_show(struct config_item *item, 1007 char *page) 1008 { 1009 struct se_portal_group *se_tpg = to_tpg(item); 1010 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1011 struct tcm_qla2xxx_tpg, se_tpg); 1012 1013 return sprintf(page, "%d\n", tpg->tpg_attrib.fabric_prot_type); 1014 } 1015 1016 CONFIGFS_ATTR(tcm_qla2xxx_tpg_, enable); 1017 CONFIGFS_ATTR_RO(tcm_qla2xxx_tpg_, dynamic_sessions); 1018 CONFIGFS_ATTR(tcm_qla2xxx_tpg_, fabric_prot_type); 1019 1020 static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = { 1021 &tcm_qla2xxx_tpg_attr_enable, 1022 &tcm_qla2xxx_tpg_attr_dynamic_sessions, 1023 &tcm_qla2xxx_tpg_attr_fabric_prot_type, 1024 NULL, 1025 }; 1026 1027 static struct se_portal_group *tcm_qla2xxx_make_tpg( 1028 struct se_wwn *wwn, 1029 struct config_group *group, 1030 const char *name) 1031 { 1032 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1033 struct tcm_qla2xxx_lport, lport_wwn); 1034 struct tcm_qla2xxx_tpg *tpg; 1035 unsigned long tpgt; 1036 int ret; 1037 1038 if (strstr(name, "tpgt_") != name) 1039 return ERR_PTR(-EINVAL); 1040 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX) 1041 return ERR_PTR(-EINVAL); 1042 1043 if ((tpgt != 1)) { 1044 pr_err("In non NPIV mode, a single TPG=1 is used for HW port mappings\n"); 1045 return ERR_PTR(-ENOSYS); 1046 } 1047 1048 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL); 1049 if (!tpg) { 1050 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n"); 1051 return ERR_PTR(-ENOMEM); 1052 } 1053 tpg->lport = lport; 1054 tpg->lport_tpgt = tpgt; 1055 /* 1056 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic 1057 * NodeACLs 1058 */ 1059 tpg->tpg_attrib.generate_node_acls = 1; 1060 tpg->tpg_attrib.demo_mode_write_protect = 1; 1061 tpg->tpg_attrib.cache_dynamic_acls = 1; 1062 tpg->tpg_attrib.demo_mode_login_only = 1; 1063 tpg->tpg_attrib.jam_host = 0; 1064 1065 ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP); 1066 if (ret < 0) { 1067 kfree(tpg); 1068 return NULL; 1069 } 1070 1071 lport->tpg_1 = tpg; 1072 1073 return &tpg->se_tpg; 1074 } 1075 1076 static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg) 1077 { 1078 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1079 struct tcm_qla2xxx_tpg, se_tpg); 1080 struct tcm_qla2xxx_lport *lport = tpg->lport; 1081 struct scsi_qla_host *vha = lport->qla_vha; 1082 /* 1083 * Call into qla2x_target.c LLD logic to shutdown the active 1084 * FC Nexuses and disable target mode operation for this qla_hw_data 1085 */ 1086 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stop) 1087 qlt_stop_phase1(vha->vha_tgt.qla_tgt); 1088 1089 core_tpg_deregister(se_tpg); 1090 /* 1091 * Clear local TPG=1 pointer for non NPIV mode. 1092 */ 1093 lport->tpg_1 = NULL; 1094 kfree(tpg); 1095 } 1096 1097 static ssize_t tcm_qla2xxx_npiv_tpg_enable_show(struct config_item *item, 1098 char *page) 1099 { 1100 return tcm_qla2xxx_tpg_enable_show(item, page); 1101 } 1102 1103 static ssize_t tcm_qla2xxx_npiv_tpg_enable_store(struct config_item *item, 1104 const char *page, size_t count) 1105 { 1106 struct se_portal_group *se_tpg = to_tpg(item); 1107 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn; 1108 struct tcm_qla2xxx_lport *lport = container_of(se_wwn, 1109 struct tcm_qla2xxx_lport, lport_wwn); 1110 struct scsi_qla_host *vha = lport->qla_vha; 1111 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1112 struct tcm_qla2xxx_tpg, se_tpg); 1113 unsigned long op; 1114 int rc; 1115 1116 rc = kstrtoul(page, 0, &op); 1117 if (rc < 0) { 1118 pr_err("kstrtoul() returned %d\n", rc); 1119 return -EINVAL; 1120 } 1121 if ((op != 1) && (op != 0)) { 1122 pr_err("Illegal value for tpg_enable: %lu\n", op); 1123 return -EINVAL; 1124 } 1125 if (op) { 1126 if (atomic_read(&tpg->lport_tpg_enabled)) 1127 return -EEXIST; 1128 1129 atomic_set(&tpg->lport_tpg_enabled, 1); 1130 qlt_enable_vha(vha); 1131 } else { 1132 if (!atomic_read(&tpg->lport_tpg_enabled)) 1133 return count; 1134 1135 atomic_set(&tpg->lport_tpg_enabled, 0); 1136 qlt_stop_phase1(vha->vha_tgt.qla_tgt); 1137 } 1138 1139 return count; 1140 } 1141 1142 CONFIGFS_ATTR(tcm_qla2xxx_npiv_tpg_, enable); 1143 1144 static struct configfs_attribute *tcm_qla2xxx_npiv_tpg_attrs[] = { 1145 &tcm_qla2xxx_npiv_tpg_attr_enable, 1146 NULL, 1147 }; 1148 1149 static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg( 1150 struct se_wwn *wwn, 1151 struct config_group *group, 1152 const char *name) 1153 { 1154 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1155 struct tcm_qla2xxx_lport, lport_wwn); 1156 struct tcm_qla2xxx_tpg *tpg; 1157 unsigned long tpgt; 1158 int ret; 1159 1160 if (strstr(name, "tpgt_") != name) 1161 return ERR_PTR(-EINVAL); 1162 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX) 1163 return ERR_PTR(-EINVAL); 1164 1165 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL); 1166 if (!tpg) { 1167 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n"); 1168 return ERR_PTR(-ENOMEM); 1169 } 1170 tpg->lport = lport; 1171 tpg->lport_tpgt = tpgt; 1172 1173 /* 1174 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic 1175 * NodeACLs 1176 */ 1177 tpg->tpg_attrib.generate_node_acls = 1; 1178 tpg->tpg_attrib.demo_mode_write_protect = 1; 1179 tpg->tpg_attrib.cache_dynamic_acls = 1; 1180 tpg->tpg_attrib.demo_mode_login_only = 1; 1181 1182 ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP); 1183 if (ret < 0) { 1184 kfree(tpg); 1185 return NULL; 1186 } 1187 lport->tpg_1 = tpg; 1188 return &tpg->se_tpg; 1189 } 1190 1191 /* 1192 * Expected to be called with struct qla_hw_data->tgt.sess_lock held 1193 */ 1194 static struct fc_port *tcm_qla2xxx_find_sess_by_s_id( 1195 scsi_qla_host_t *vha, 1196 const uint8_t *s_id) 1197 { 1198 struct tcm_qla2xxx_lport *lport; 1199 struct se_node_acl *se_nacl; 1200 struct tcm_qla2xxx_nacl *nacl; 1201 u32 key; 1202 1203 lport = vha->vha_tgt.target_lport_ptr; 1204 if (!lport) { 1205 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1206 dump_stack(); 1207 return NULL; 1208 } 1209 1210 key = sid_to_key(s_id); 1211 pr_debug("find_sess_by_s_id: 0x%06x\n", key); 1212 1213 se_nacl = btree_lookup32(&lport->lport_fcport_map, key); 1214 if (!se_nacl) { 1215 pr_debug("Unable to locate s_id: 0x%06x\n", key); 1216 return NULL; 1217 } 1218 pr_debug("find_sess_by_s_id: located se_nacl: %p, initiatorname: %s\n", 1219 se_nacl, se_nacl->initiatorname); 1220 1221 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1222 if (!nacl->fc_port) { 1223 pr_err("Unable to locate struct fc_port\n"); 1224 return NULL; 1225 } 1226 1227 return nacl->fc_port; 1228 } 1229 1230 /* 1231 * Expected to be called with struct qla_hw_data->tgt.sess_lock held 1232 */ 1233 static void tcm_qla2xxx_set_sess_by_s_id( 1234 struct tcm_qla2xxx_lport *lport, 1235 struct se_node_acl *new_se_nacl, 1236 struct tcm_qla2xxx_nacl *nacl, 1237 struct se_session *se_sess, 1238 struct fc_port *fc_port, 1239 uint8_t *s_id) 1240 { 1241 u32 key; 1242 void *slot; 1243 int rc; 1244 1245 key = sid_to_key(s_id); 1246 pr_debug("set_sess_by_s_id: %06x\n", key); 1247 1248 slot = btree_lookup32(&lport->lport_fcport_map, key); 1249 if (!slot) { 1250 if (new_se_nacl) { 1251 pr_debug("Setting up new fc_port entry to new_se_nacl\n"); 1252 nacl->nport_id = key; 1253 rc = btree_insert32(&lport->lport_fcport_map, key, 1254 new_se_nacl, GFP_ATOMIC); 1255 if (rc) 1256 printk(KERN_ERR "Unable to insert s_id into fcport_map: %06x\n", 1257 (int)key); 1258 } else { 1259 pr_debug("Wiping nonexisting fc_port entry\n"); 1260 } 1261 1262 fc_port->se_sess = se_sess; 1263 nacl->fc_port = fc_port; 1264 return; 1265 } 1266 1267 if (nacl->fc_port) { 1268 if (new_se_nacl == NULL) { 1269 pr_debug("Clearing existing nacl->fc_port and fc_port entry\n"); 1270 btree_remove32(&lport->lport_fcport_map, key); 1271 nacl->fc_port = NULL; 1272 return; 1273 } 1274 pr_debug("Replacing existing nacl->fc_port and fc_port entry\n"); 1275 btree_update32(&lport->lport_fcport_map, key, new_se_nacl); 1276 fc_port->se_sess = se_sess; 1277 nacl->fc_port = fc_port; 1278 return; 1279 } 1280 1281 if (new_se_nacl == NULL) { 1282 pr_debug("Clearing existing fc_port entry\n"); 1283 btree_remove32(&lport->lport_fcport_map, key); 1284 return; 1285 } 1286 1287 pr_debug("Replacing existing fc_port entry w/o active nacl->fc_port\n"); 1288 btree_update32(&lport->lport_fcport_map, key, new_se_nacl); 1289 fc_port->se_sess = se_sess; 1290 nacl->fc_port = fc_port; 1291 1292 pr_debug("Setup nacl->fc_port %p by s_id for se_nacl: %p, initiatorname: %s\n", 1293 nacl->fc_port, new_se_nacl, new_se_nacl->initiatorname); 1294 } 1295 1296 /* 1297 * Expected to be called with struct qla_hw_data->tgt.sess_lock held 1298 */ 1299 static struct fc_port *tcm_qla2xxx_find_sess_by_loop_id( 1300 scsi_qla_host_t *vha, 1301 const uint16_t loop_id) 1302 { 1303 struct tcm_qla2xxx_lport *lport; 1304 struct se_node_acl *se_nacl; 1305 struct tcm_qla2xxx_nacl *nacl; 1306 struct tcm_qla2xxx_fc_loopid *fc_loopid; 1307 1308 lport = vha->vha_tgt.target_lport_ptr; 1309 if (!lport) { 1310 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1311 dump_stack(); 1312 return NULL; 1313 } 1314 1315 pr_debug("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id); 1316 1317 fc_loopid = lport->lport_loopid_map + loop_id; 1318 se_nacl = fc_loopid->se_nacl; 1319 if (!se_nacl) { 1320 pr_debug("Unable to locate se_nacl by loop_id: 0x%04x\n", 1321 loop_id); 1322 return NULL; 1323 } 1324 1325 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1326 1327 if (!nacl->fc_port) { 1328 pr_err("Unable to locate struct fc_port\n"); 1329 return NULL; 1330 } 1331 1332 return nacl->fc_port; 1333 } 1334 1335 /* 1336 * Expected to be called with struct qla_hw_data->tgt.sess_lock held 1337 */ 1338 static void tcm_qla2xxx_set_sess_by_loop_id( 1339 struct tcm_qla2xxx_lport *lport, 1340 struct se_node_acl *new_se_nacl, 1341 struct tcm_qla2xxx_nacl *nacl, 1342 struct se_session *se_sess, 1343 struct fc_port *fc_port, 1344 uint16_t loop_id) 1345 { 1346 struct se_node_acl *saved_nacl; 1347 struct tcm_qla2xxx_fc_loopid *fc_loopid; 1348 1349 pr_debug("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id); 1350 1351 fc_loopid = &((struct tcm_qla2xxx_fc_loopid *) 1352 lport->lport_loopid_map)[loop_id]; 1353 1354 saved_nacl = fc_loopid->se_nacl; 1355 if (!saved_nacl) { 1356 pr_debug("Setting up new fc_loopid->se_nacl to new_se_nacl\n"); 1357 fc_loopid->se_nacl = new_se_nacl; 1358 if (fc_port->se_sess != se_sess) 1359 fc_port->se_sess = se_sess; 1360 if (nacl->fc_port != fc_port) 1361 nacl->fc_port = fc_port; 1362 return; 1363 } 1364 1365 if (nacl->fc_port) { 1366 if (new_se_nacl == NULL) { 1367 pr_debug("Clearing nacl->fc_port and fc_loopid->se_nacl\n"); 1368 fc_loopid->se_nacl = NULL; 1369 nacl->fc_port = NULL; 1370 return; 1371 } 1372 1373 pr_debug("Replacing existing nacl->fc_port and fc_loopid->se_nacl\n"); 1374 fc_loopid->se_nacl = new_se_nacl; 1375 if (fc_port->se_sess != se_sess) 1376 fc_port->se_sess = se_sess; 1377 if (nacl->fc_port != fc_port) 1378 nacl->fc_port = fc_port; 1379 return; 1380 } 1381 1382 if (new_se_nacl == NULL) { 1383 pr_debug("Clearing fc_loopid->se_nacl\n"); 1384 fc_loopid->se_nacl = NULL; 1385 return; 1386 } 1387 1388 pr_debug("Replacing existing fc_loopid->se_nacl w/o active nacl->fc_port\n"); 1389 fc_loopid->se_nacl = new_se_nacl; 1390 if (fc_port->se_sess != se_sess) 1391 fc_port->se_sess = se_sess; 1392 if (nacl->fc_port != fc_port) 1393 nacl->fc_port = fc_port; 1394 1395 pr_debug("Setup nacl->fc_port %p by loop_id for se_nacl: %p, initiatorname: %s\n", 1396 nacl->fc_port, new_se_nacl, new_se_nacl->initiatorname); 1397 } 1398 1399 /* 1400 * Should always be called with qla_hw_data->tgt.sess_lock held. 1401 */ 1402 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *lport, 1403 struct tcm_qla2xxx_nacl *nacl, struct fc_port *sess) 1404 { 1405 struct se_session *se_sess = sess->se_sess; 1406 unsigned char be_sid[3]; 1407 1408 be_sid[0] = sess->d_id.b.domain; 1409 be_sid[1] = sess->d_id.b.area; 1410 be_sid[2] = sess->d_id.b.al_pa; 1411 1412 tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess, 1413 sess, be_sid); 1414 tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess, 1415 sess, sess->loop_id); 1416 } 1417 1418 static void tcm_qla2xxx_free_session(struct fc_port *sess) 1419 { 1420 struct qla_tgt *tgt = sess->tgt; 1421 struct qla_hw_data *ha = tgt->ha; 1422 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev); 1423 struct se_session *se_sess; 1424 struct tcm_qla2xxx_lport *lport; 1425 1426 BUG_ON(in_interrupt()); 1427 1428 se_sess = sess->se_sess; 1429 if (!se_sess) { 1430 pr_err("struct fc_port->se_sess is NULL\n"); 1431 dump_stack(); 1432 return; 1433 } 1434 1435 lport = vha->vha_tgt.target_lport_ptr; 1436 if (!lport) { 1437 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1438 dump_stack(); 1439 return; 1440 } 1441 target_wait_for_sess_cmds(se_sess); 1442 1443 transport_deregister_session_configfs(sess->se_sess); 1444 transport_deregister_session(sess->se_sess); 1445 } 1446 1447 static int tcm_qla2xxx_session_cb(struct se_portal_group *se_tpg, 1448 struct se_session *se_sess, void *p) 1449 { 1450 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1451 struct tcm_qla2xxx_tpg, se_tpg); 1452 struct tcm_qla2xxx_lport *lport = tpg->lport; 1453 struct qla_hw_data *ha = lport->qla_vha->hw; 1454 struct se_node_acl *se_nacl = se_sess->se_node_acl; 1455 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl, 1456 struct tcm_qla2xxx_nacl, se_node_acl); 1457 struct fc_port *qlat_sess = p; 1458 uint16_t loop_id = qlat_sess->loop_id; 1459 unsigned long flags; 1460 unsigned char be_sid[3]; 1461 1462 be_sid[0] = qlat_sess->d_id.b.domain; 1463 be_sid[1] = qlat_sess->d_id.b.area; 1464 be_sid[2] = qlat_sess->d_id.b.al_pa; 1465 1466 /* 1467 * And now setup se_nacl and session pointers into HW lport internal 1468 * mappings for fabric S_ID and LOOP_ID. 1469 */ 1470 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1471 tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl, 1472 se_sess, qlat_sess, be_sid); 1473 tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl, 1474 se_sess, qlat_sess, loop_id); 1475 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1476 1477 return 0; 1478 } 1479 1480 /* 1481 * Called via qlt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl() 1482 * to locate struct se_node_acl 1483 */ 1484 static int tcm_qla2xxx_check_initiator_node_acl( 1485 scsi_qla_host_t *vha, 1486 unsigned char *fc_wwpn, 1487 struct fc_port *qlat_sess) 1488 { 1489 struct qla_hw_data *ha = vha->hw; 1490 struct tcm_qla2xxx_lport *lport; 1491 struct tcm_qla2xxx_tpg *tpg; 1492 struct se_session *se_sess; 1493 unsigned char port_name[36]; 1494 int num_tags = (ha->cur_fw_xcb_count) ? ha->cur_fw_xcb_count : 1495 TCM_QLA2XXX_DEFAULT_TAGS; 1496 1497 lport = vha->vha_tgt.target_lport_ptr; 1498 if (!lport) { 1499 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1500 dump_stack(); 1501 return -EINVAL; 1502 } 1503 /* 1504 * Locate the TPG=1 reference.. 1505 */ 1506 tpg = lport->tpg_1; 1507 if (!tpg) { 1508 pr_err("Unable to lcoate struct tcm_qla2xxx_lport->tpg_1\n"); 1509 return -EINVAL; 1510 } 1511 /* 1512 * Format the FCP Initiator port_name into colon seperated values to 1513 * match the format by tcm_qla2xxx explict ConfigFS NodeACLs. 1514 */ 1515 memset(&port_name, 0, 36); 1516 snprintf(port_name, sizeof(port_name), "%8phC", fc_wwpn); 1517 /* 1518 * Locate our struct se_node_acl either from an explict NodeACL created 1519 * via ConfigFS, or via running in TPG demo mode. 1520 */ 1521 se_sess = target_alloc_session(&tpg->se_tpg, num_tags, 1522 sizeof(struct qla_tgt_cmd), 1523 TARGET_PROT_ALL, port_name, 1524 qlat_sess, tcm_qla2xxx_session_cb); 1525 if (IS_ERR(se_sess)) 1526 return PTR_ERR(se_sess); 1527 1528 return 0; 1529 } 1530 1531 static void tcm_qla2xxx_update_sess(struct fc_port *sess, port_id_t s_id, 1532 uint16_t loop_id, bool conf_compl_supported) 1533 { 1534 struct qla_tgt *tgt = sess->tgt; 1535 struct qla_hw_data *ha = tgt->ha; 1536 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev); 1537 struct tcm_qla2xxx_lport *lport = vha->vha_tgt.target_lport_ptr; 1538 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl; 1539 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl, 1540 struct tcm_qla2xxx_nacl, se_node_acl); 1541 u32 key; 1542 1543 1544 if (sess->loop_id != loop_id || sess->d_id.b24 != s_id.b24) 1545 pr_info("Updating session %p from port %8phC loop_id %d -> %d s_id %x:%x:%x -> %x:%x:%x\n", 1546 sess, sess->port_name, 1547 sess->loop_id, loop_id, sess->d_id.b.domain, 1548 sess->d_id.b.area, sess->d_id.b.al_pa, s_id.b.domain, 1549 s_id.b.area, s_id.b.al_pa); 1550 1551 if (sess->loop_id != loop_id) { 1552 /* 1553 * Because we can shuffle loop IDs around and we 1554 * update different sessions non-atomically, we might 1555 * have overwritten this session's old loop ID 1556 * already, and we might end up overwriting some other 1557 * session that will be updated later. So we have to 1558 * be extra careful and we can't warn about those things... 1559 */ 1560 if (lport->lport_loopid_map[sess->loop_id].se_nacl == se_nacl) 1561 lport->lport_loopid_map[sess->loop_id].se_nacl = NULL; 1562 1563 lport->lport_loopid_map[loop_id].se_nacl = se_nacl; 1564 1565 sess->loop_id = loop_id; 1566 } 1567 1568 if (sess->d_id.b24 != s_id.b24) { 1569 key = (((u32) sess->d_id.b.domain << 16) | 1570 ((u32) sess->d_id.b.area << 8) | 1571 ((u32) sess->d_id.b.al_pa)); 1572 1573 if (btree_lookup32(&lport->lport_fcport_map, key)) 1574 WARN(btree_remove32(&lport->lport_fcport_map, key) != 1575 se_nacl, "Found wrong se_nacl when updating s_id %x:%x:%x\n", 1576 sess->d_id.b.domain, sess->d_id.b.area, 1577 sess->d_id.b.al_pa); 1578 else 1579 WARN(1, "No lport_fcport_map entry for s_id %x:%x:%x\n", 1580 sess->d_id.b.domain, sess->d_id.b.area, 1581 sess->d_id.b.al_pa); 1582 1583 key = (((u32) s_id.b.domain << 16) | 1584 ((u32) s_id.b.area << 8) | 1585 ((u32) s_id.b.al_pa)); 1586 1587 if (btree_lookup32(&lport->lport_fcport_map, key)) { 1588 WARN(1, "Already have lport_fcport_map entry for s_id %x:%x:%x\n", 1589 s_id.b.domain, s_id.b.area, s_id.b.al_pa); 1590 btree_update32(&lport->lport_fcport_map, key, se_nacl); 1591 } else { 1592 btree_insert32(&lport->lport_fcport_map, key, se_nacl, 1593 GFP_ATOMIC); 1594 } 1595 1596 sess->d_id = s_id; 1597 nacl->nport_id = key; 1598 } 1599 1600 sess->conf_compl_supported = conf_compl_supported; 1601 1602 /* Reset logout parameters to default */ 1603 sess->logout_on_delete = 1; 1604 sess->keep_nport_handle = 0; 1605 } 1606 1607 /* 1608 * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path. 1609 */ 1610 static struct qla_tgt_func_tmpl tcm_qla2xxx_template = { 1611 .handle_cmd = tcm_qla2xxx_handle_cmd, 1612 .handle_data = tcm_qla2xxx_handle_data, 1613 .handle_tmr = tcm_qla2xxx_handle_tmr, 1614 .free_cmd = tcm_qla2xxx_free_cmd, 1615 .free_mcmd = tcm_qla2xxx_free_mcmd, 1616 .free_session = tcm_qla2xxx_free_session, 1617 .update_sess = tcm_qla2xxx_update_sess, 1618 .check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl, 1619 .find_sess_by_s_id = tcm_qla2xxx_find_sess_by_s_id, 1620 .find_sess_by_loop_id = tcm_qla2xxx_find_sess_by_loop_id, 1621 .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map, 1622 .put_sess = tcm_qla2xxx_put_sess, 1623 .shutdown_sess = tcm_qla2xxx_shutdown_sess, 1624 .get_dif_tags = tcm_qla2xxx_dif_tags, 1625 .chk_dif_tags = tcm_qla2xxx_chk_dif_tags, 1626 }; 1627 1628 static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport) 1629 { 1630 int rc; 1631 1632 rc = btree_init32(&lport->lport_fcport_map); 1633 if (rc) { 1634 pr_err("Unable to initialize lport->lport_fcport_map btree\n"); 1635 return rc; 1636 } 1637 1638 lport->lport_loopid_map = vzalloc(sizeof(struct tcm_qla2xxx_fc_loopid) * 65536); 1639 if (!lport->lport_loopid_map) { 1640 pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n", 1641 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536); 1642 btree_destroy32(&lport->lport_fcport_map); 1643 return -ENOMEM; 1644 } 1645 pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n", 1646 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536); 1647 return 0; 1648 } 1649 1650 static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha, 1651 void *target_lport_ptr, 1652 u64 npiv_wwpn, u64 npiv_wwnn) 1653 { 1654 struct qla_hw_data *ha = vha->hw; 1655 struct tcm_qla2xxx_lport *lport = 1656 (struct tcm_qla2xxx_lport *)target_lport_ptr; 1657 /* 1658 * Setup tgt_ops, local pointer to vha and target_lport_ptr 1659 */ 1660 ha->tgt.tgt_ops = &tcm_qla2xxx_template; 1661 vha->vha_tgt.target_lport_ptr = target_lport_ptr; 1662 lport->qla_vha = vha; 1663 1664 return 0; 1665 } 1666 1667 static struct se_wwn *tcm_qla2xxx_make_lport( 1668 struct target_fabric_configfs *tf, 1669 struct config_group *group, 1670 const char *name) 1671 { 1672 struct tcm_qla2xxx_lport *lport; 1673 u64 wwpn; 1674 int ret = -ENODEV; 1675 1676 if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0) 1677 return ERR_PTR(-EINVAL); 1678 1679 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL); 1680 if (!lport) { 1681 pr_err("Unable to allocate struct tcm_qla2xxx_lport\n"); 1682 return ERR_PTR(-ENOMEM); 1683 } 1684 lport->lport_wwpn = wwpn; 1685 tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN, 1686 wwpn); 1687 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) wwpn); 1688 1689 ret = tcm_qla2xxx_init_lport(lport); 1690 if (ret != 0) 1691 goto out; 1692 1693 ret = qlt_lport_register(lport, wwpn, 0, 0, 1694 tcm_qla2xxx_lport_register_cb); 1695 if (ret != 0) 1696 goto out_lport; 1697 1698 return &lport->lport_wwn; 1699 out_lport: 1700 vfree(lport->lport_loopid_map); 1701 btree_destroy32(&lport->lport_fcport_map); 1702 out: 1703 kfree(lport); 1704 return ERR_PTR(ret); 1705 } 1706 1707 static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn) 1708 { 1709 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1710 struct tcm_qla2xxx_lport, lport_wwn); 1711 struct scsi_qla_host *vha = lport->qla_vha; 1712 struct se_node_acl *node; 1713 u32 key = 0; 1714 1715 /* 1716 * Call into qla2x_target.c LLD logic to complete the 1717 * shutdown of struct qla_tgt after the call to 1718 * qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above.. 1719 */ 1720 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stopped) 1721 qlt_stop_phase2(vha->vha_tgt.qla_tgt); 1722 1723 qlt_lport_deregister(vha); 1724 1725 vfree(lport->lport_loopid_map); 1726 btree_for_each_safe32(&lport->lport_fcport_map, key, node) 1727 btree_remove32(&lport->lport_fcport_map, key); 1728 btree_destroy32(&lport->lport_fcport_map); 1729 kfree(lport); 1730 } 1731 1732 static int tcm_qla2xxx_lport_register_npiv_cb(struct scsi_qla_host *base_vha, 1733 void *target_lport_ptr, 1734 u64 npiv_wwpn, u64 npiv_wwnn) 1735 { 1736 struct fc_vport *vport; 1737 struct Scsi_Host *sh = base_vha->host; 1738 struct scsi_qla_host *npiv_vha; 1739 struct tcm_qla2xxx_lport *lport = 1740 (struct tcm_qla2xxx_lport *)target_lport_ptr; 1741 struct tcm_qla2xxx_lport *base_lport = 1742 (struct tcm_qla2xxx_lport *)base_vha->vha_tgt.target_lport_ptr; 1743 struct fc_vport_identifiers vport_id; 1744 1745 if (qla_ini_mode_enabled(base_vha)) { 1746 pr_err("qla2xxx base_vha not enabled for target mode\n"); 1747 return -EPERM; 1748 } 1749 1750 if (!base_lport || !base_lport->tpg_1 || 1751 !atomic_read(&base_lport->tpg_1->lport_tpg_enabled)) { 1752 pr_err("qla2xxx base_lport or tpg_1 not available\n"); 1753 return -EPERM; 1754 } 1755 1756 memset(&vport_id, 0, sizeof(vport_id)); 1757 vport_id.port_name = npiv_wwpn; 1758 vport_id.node_name = npiv_wwnn; 1759 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR; 1760 vport_id.vport_type = FC_PORTTYPE_NPIV; 1761 vport_id.disable = false; 1762 1763 vport = fc_vport_create(sh, 0, &vport_id); 1764 if (!vport) { 1765 pr_err("fc_vport_create failed for qla2xxx_npiv\n"); 1766 return -ENODEV; 1767 } 1768 /* 1769 * Setup local pointer to NPIV vhba + target_lport_ptr 1770 */ 1771 npiv_vha = (struct scsi_qla_host *)vport->dd_data; 1772 npiv_vha->vha_tgt.target_lport_ptr = target_lport_ptr; 1773 lport->qla_vha = npiv_vha; 1774 scsi_host_get(npiv_vha->host); 1775 return 0; 1776 } 1777 1778 1779 static struct se_wwn *tcm_qla2xxx_npiv_make_lport( 1780 struct target_fabric_configfs *tf, 1781 struct config_group *group, 1782 const char *name) 1783 { 1784 struct tcm_qla2xxx_lport *lport; 1785 u64 phys_wwpn, npiv_wwpn, npiv_wwnn; 1786 char *p, tmp[128]; 1787 int ret; 1788 1789 snprintf(tmp, 128, "%s", name); 1790 1791 p = strchr(tmp, '@'); 1792 if (!p) { 1793 pr_err("Unable to locate NPIV '@' separator\n"); 1794 return ERR_PTR(-EINVAL); 1795 } 1796 *p++ = '\0'; 1797 1798 if (tcm_qla2xxx_parse_wwn(tmp, &phys_wwpn, 1) < 0) 1799 return ERR_PTR(-EINVAL); 1800 1801 if (tcm_qla2xxx_npiv_parse_wwn(p, strlen(p)+1, 1802 &npiv_wwpn, &npiv_wwnn) < 0) 1803 return ERR_PTR(-EINVAL); 1804 1805 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL); 1806 if (!lport) { 1807 pr_err("Unable to allocate struct tcm_qla2xxx_lport for NPIV\n"); 1808 return ERR_PTR(-ENOMEM); 1809 } 1810 lport->lport_npiv_wwpn = npiv_wwpn; 1811 lport->lport_npiv_wwnn = npiv_wwnn; 1812 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) npiv_wwpn); 1813 1814 ret = tcm_qla2xxx_init_lport(lport); 1815 if (ret != 0) 1816 goto out; 1817 1818 ret = qlt_lport_register(lport, phys_wwpn, npiv_wwpn, npiv_wwnn, 1819 tcm_qla2xxx_lport_register_npiv_cb); 1820 if (ret != 0) 1821 goto out_lport; 1822 1823 return &lport->lport_wwn; 1824 out_lport: 1825 vfree(lport->lport_loopid_map); 1826 btree_destroy32(&lport->lport_fcport_map); 1827 out: 1828 kfree(lport); 1829 return ERR_PTR(ret); 1830 } 1831 1832 static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn) 1833 { 1834 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1835 struct tcm_qla2xxx_lport, lport_wwn); 1836 struct scsi_qla_host *npiv_vha = lport->qla_vha; 1837 struct qla_hw_data *ha = npiv_vha->hw; 1838 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 1839 1840 scsi_host_put(npiv_vha->host); 1841 /* 1842 * Notify libfc that we want to release the vha->fc_vport 1843 */ 1844 fc_vport_terminate(npiv_vha->fc_vport); 1845 scsi_host_put(base_vha->host); 1846 kfree(lport); 1847 } 1848 1849 1850 static ssize_t tcm_qla2xxx_wwn_version_show(struct config_item *item, 1851 char *page) 1852 { 1853 return sprintf(page, 1854 "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s on %s\n", 1855 QLA2XXX_VERSION, utsname()->sysname, 1856 utsname()->machine, utsname()->release); 1857 } 1858 1859 CONFIGFS_ATTR_RO(tcm_qla2xxx_wwn_, version); 1860 1861 static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = { 1862 &tcm_qla2xxx_wwn_attr_version, 1863 NULL, 1864 }; 1865 1866 static const struct target_core_fabric_ops tcm_qla2xxx_ops = { 1867 .module = THIS_MODULE, 1868 .name = "qla2xxx", 1869 .node_acl_size = sizeof(struct tcm_qla2xxx_nacl), 1870 /* 1871 * XXX: Limit assumes single page per scatter-gather-list entry. 1872 * Current maximum is ~4.9 MB per se_cmd->t_data_sg with PAGE_SIZE=4096 1873 */ 1874 .max_data_sg_nents = 1200, 1875 .get_fabric_name = tcm_qla2xxx_get_fabric_name, 1876 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn, 1877 .tpg_get_tag = tcm_qla2xxx_get_tag, 1878 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode, 1879 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache, 1880 .tpg_check_demo_mode_write_protect = 1881 tcm_qla2xxx_check_demo_write_protect, 1882 .tpg_check_prod_mode_write_protect = 1883 tcm_qla2xxx_check_prod_write_protect, 1884 .tpg_check_prot_fabric_only = tcm_qla2xxx_check_prot_fabric_only, 1885 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only, 1886 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index, 1887 .check_stop_free = tcm_qla2xxx_check_stop_free, 1888 .release_cmd = tcm_qla2xxx_release_cmd, 1889 .close_session = tcm_qla2xxx_close_session, 1890 .sess_get_index = tcm_qla2xxx_sess_get_index, 1891 .sess_get_initiator_sid = NULL, 1892 .write_pending = tcm_qla2xxx_write_pending, 1893 .write_pending_status = tcm_qla2xxx_write_pending_status, 1894 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs, 1895 .get_cmd_state = tcm_qla2xxx_get_cmd_state, 1896 .queue_data_in = tcm_qla2xxx_queue_data_in, 1897 .queue_status = tcm_qla2xxx_queue_status, 1898 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp, 1899 .aborted_task = tcm_qla2xxx_aborted_task, 1900 /* 1901 * Setup function pointers for generic logic in 1902 * target_core_fabric_configfs.c 1903 */ 1904 .fabric_make_wwn = tcm_qla2xxx_make_lport, 1905 .fabric_drop_wwn = tcm_qla2xxx_drop_lport, 1906 .fabric_make_tpg = tcm_qla2xxx_make_tpg, 1907 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg, 1908 .fabric_init_nodeacl = tcm_qla2xxx_init_nodeacl, 1909 1910 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs, 1911 .tfc_tpg_base_attrs = tcm_qla2xxx_tpg_attrs, 1912 .tfc_tpg_attrib_attrs = tcm_qla2xxx_tpg_attrib_attrs, 1913 }; 1914 1915 static const struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = { 1916 .module = THIS_MODULE, 1917 .name = "qla2xxx_npiv", 1918 .node_acl_size = sizeof(struct tcm_qla2xxx_nacl), 1919 .get_fabric_name = tcm_qla2xxx_npiv_get_fabric_name, 1920 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn, 1921 .tpg_get_tag = tcm_qla2xxx_get_tag, 1922 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode, 1923 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache, 1924 .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_demo_mode, 1925 .tpg_check_prod_mode_write_protect = 1926 tcm_qla2xxx_check_prod_write_protect, 1927 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only, 1928 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index, 1929 .check_stop_free = tcm_qla2xxx_check_stop_free, 1930 .release_cmd = tcm_qla2xxx_release_cmd, 1931 .close_session = tcm_qla2xxx_close_session, 1932 .sess_get_index = tcm_qla2xxx_sess_get_index, 1933 .sess_get_initiator_sid = NULL, 1934 .write_pending = tcm_qla2xxx_write_pending, 1935 .write_pending_status = tcm_qla2xxx_write_pending_status, 1936 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs, 1937 .get_cmd_state = tcm_qla2xxx_get_cmd_state, 1938 .queue_data_in = tcm_qla2xxx_queue_data_in, 1939 .queue_status = tcm_qla2xxx_queue_status, 1940 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp, 1941 .aborted_task = tcm_qla2xxx_aborted_task, 1942 /* 1943 * Setup function pointers for generic logic in 1944 * target_core_fabric_configfs.c 1945 */ 1946 .fabric_make_wwn = tcm_qla2xxx_npiv_make_lport, 1947 .fabric_drop_wwn = tcm_qla2xxx_npiv_drop_lport, 1948 .fabric_make_tpg = tcm_qla2xxx_npiv_make_tpg, 1949 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg, 1950 .fabric_init_nodeacl = tcm_qla2xxx_init_nodeacl, 1951 1952 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs, 1953 .tfc_tpg_base_attrs = tcm_qla2xxx_npiv_tpg_attrs, 1954 }; 1955 1956 static int tcm_qla2xxx_register_configfs(void) 1957 { 1958 int ret; 1959 1960 pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on %s\n", 1961 QLA2XXX_VERSION, utsname()->sysname, 1962 utsname()->machine, utsname()->release); 1963 1964 ret = target_register_template(&tcm_qla2xxx_ops); 1965 if (ret) 1966 return ret; 1967 1968 ret = target_register_template(&tcm_qla2xxx_npiv_ops); 1969 if (ret) 1970 goto out_fabric; 1971 1972 tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free", 1973 WQ_MEM_RECLAIM, 0); 1974 if (!tcm_qla2xxx_free_wq) { 1975 ret = -ENOMEM; 1976 goto out_fabric_npiv; 1977 } 1978 1979 tcm_qla2xxx_cmd_wq = alloc_workqueue("tcm_qla2xxx_cmd", 0, 0); 1980 if (!tcm_qla2xxx_cmd_wq) { 1981 ret = -ENOMEM; 1982 goto out_free_wq; 1983 } 1984 1985 return 0; 1986 1987 out_free_wq: 1988 destroy_workqueue(tcm_qla2xxx_free_wq); 1989 out_fabric_npiv: 1990 target_unregister_template(&tcm_qla2xxx_npiv_ops); 1991 out_fabric: 1992 target_unregister_template(&tcm_qla2xxx_ops); 1993 return ret; 1994 } 1995 1996 static void tcm_qla2xxx_deregister_configfs(void) 1997 { 1998 destroy_workqueue(tcm_qla2xxx_cmd_wq); 1999 destroy_workqueue(tcm_qla2xxx_free_wq); 2000 2001 target_unregister_template(&tcm_qla2xxx_ops); 2002 target_unregister_template(&tcm_qla2xxx_npiv_ops); 2003 } 2004 2005 static int __init tcm_qla2xxx_init(void) 2006 { 2007 int ret; 2008 2009 ret = tcm_qla2xxx_register_configfs(); 2010 if (ret < 0) 2011 return ret; 2012 2013 return 0; 2014 } 2015 2016 static void __exit tcm_qla2xxx_exit(void) 2017 { 2018 tcm_qla2xxx_deregister_configfs(); 2019 } 2020 2021 MODULE_DESCRIPTION("TCM QLA24XX+ series NPIV enabled fabric driver"); 2022 MODULE_LICENSE("GPL"); 2023 module_init(tcm_qla2xxx_init); 2024 module_exit(tcm_qla2xxx_exit); 2025