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 52 /* 53 * Parse WWN. 54 * If strict, we require lower-case hex and colon separators to be sure 55 * the name is the same as what would be generated by ft_format_wwn() 56 * so the name and wwn are mapped one-to-one. 57 */ 58 static ssize_t tcm_qla2xxx_parse_wwn(const char *name, u64 *wwn, int strict) 59 { 60 const char *cp; 61 char c; 62 u32 nibble; 63 u32 byte = 0; 64 u32 pos = 0; 65 u32 err; 66 67 *wwn = 0; 68 for (cp = name; cp < &name[TCM_QLA2XXX_NAMELEN - 1]; cp++) { 69 c = *cp; 70 if (c == '\n' && cp[1] == '\0') 71 continue; 72 if (strict && pos++ == 2 && byte++ < 7) { 73 pos = 0; 74 if (c == ':') 75 continue; 76 err = 1; 77 goto fail; 78 } 79 if (c == '\0') { 80 err = 2; 81 if (strict && byte != 8) 82 goto fail; 83 return cp - name; 84 } 85 err = 3; 86 if (isdigit(c)) 87 nibble = c - '0'; 88 else if (isxdigit(c) && (islower(c) || !strict)) 89 nibble = tolower(c) - 'a' + 10; 90 else 91 goto fail; 92 *wwn = (*wwn << 4) | nibble; 93 } 94 err = 4; 95 fail: 96 pr_debug("err %u len %zu pos %u byte %u\n", 97 err, cp - name, pos, byte); 98 return -1; 99 } 100 101 static ssize_t tcm_qla2xxx_format_wwn(char *buf, size_t len, u64 wwn) 102 { 103 u8 b[8]; 104 105 put_unaligned_be64(wwn, b); 106 return snprintf(buf, len, 107 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x", 108 b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7]); 109 } 110 111 /* 112 * From drivers/scsi/scsi_transport_fc.c:fc_parse_wwn 113 */ 114 static int tcm_qla2xxx_npiv_extract_wwn(const char *ns, u64 *nm) 115 { 116 unsigned int i, j; 117 u8 wwn[8]; 118 119 memset(wwn, 0, sizeof(wwn)); 120 121 /* Validate and store the new name */ 122 for (i = 0, j = 0; i < 16; i++) { 123 int value; 124 125 value = hex_to_bin(*ns++); 126 if (value >= 0) 127 j = (j << 4) | value; 128 else 129 return -EINVAL; 130 131 if (i % 2) { 132 wwn[i/2] = j & 0xff; 133 j = 0; 134 } 135 } 136 137 *nm = wwn_to_u64(wwn); 138 return 0; 139 } 140 141 /* 142 * This parsing logic follows drivers/scsi/scsi_transport_fc.c: 143 * store_fc_host_vport_create() 144 */ 145 static int tcm_qla2xxx_npiv_parse_wwn( 146 const char *name, 147 size_t count, 148 u64 *wwpn, 149 u64 *wwnn) 150 { 151 unsigned int cnt = count; 152 int rc; 153 154 *wwpn = 0; 155 *wwnn = 0; 156 157 /* count may include a LF at end of string */ 158 if (name[cnt-1] == '\n' || name[cnt-1] == 0) 159 cnt--; 160 161 /* validate we have enough characters for WWPN */ 162 if ((cnt != (16+1+16)) || (name[16] != ':')) 163 return -EINVAL; 164 165 rc = tcm_qla2xxx_npiv_extract_wwn(&name[0], wwpn); 166 if (rc != 0) 167 return rc; 168 169 rc = tcm_qla2xxx_npiv_extract_wwn(&name[17], wwnn); 170 if (rc != 0) 171 return rc; 172 173 return 0; 174 } 175 176 static char *tcm_qla2xxx_get_fabric_wwn(struct se_portal_group *se_tpg) 177 { 178 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 179 struct tcm_qla2xxx_tpg, se_tpg); 180 struct tcm_qla2xxx_lport *lport = tpg->lport; 181 182 return lport->lport_naa_name; 183 } 184 185 static u16 tcm_qla2xxx_get_tag(struct se_portal_group *se_tpg) 186 { 187 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 188 struct tcm_qla2xxx_tpg, se_tpg); 189 return tpg->lport_tpgt; 190 } 191 192 static int tcm_qla2xxx_check_demo_mode(struct se_portal_group *se_tpg) 193 { 194 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 195 struct tcm_qla2xxx_tpg, se_tpg); 196 197 return tpg->tpg_attrib.generate_node_acls; 198 } 199 200 static int tcm_qla2xxx_check_demo_mode_cache(struct se_portal_group *se_tpg) 201 { 202 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 203 struct tcm_qla2xxx_tpg, se_tpg); 204 205 return tpg->tpg_attrib.cache_dynamic_acls; 206 } 207 208 static int tcm_qla2xxx_check_demo_write_protect(struct se_portal_group *se_tpg) 209 { 210 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 211 struct tcm_qla2xxx_tpg, se_tpg); 212 213 return tpg->tpg_attrib.demo_mode_write_protect; 214 } 215 216 static int tcm_qla2xxx_check_prod_write_protect(struct se_portal_group *se_tpg) 217 { 218 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 219 struct tcm_qla2xxx_tpg, se_tpg); 220 221 return tpg->tpg_attrib.prod_mode_write_protect; 222 } 223 224 static int tcm_qla2xxx_check_demo_mode_login_only(struct se_portal_group *se_tpg) 225 { 226 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 227 struct tcm_qla2xxx_tpg, se_tpg); 228 229 return tpg->tpg_attrib.demo_mode_login_only; 230 } 231 232 static int tcm_qla2xxx_check_prot_fabric_only(struct se_portal_group *se_tpg) 233 { 234 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 235 struct tcm_qla2xxx_tpg, se_tpg); 236 237 return tpg->tpg_attrib.fabric_prot_type; 238 } 239 240 static u32 tcm_qla2xxx_tpg_get_inst_index(struct se_portal_group *se_tpg) 241 { 242 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 243 struct tcm_qla2xxx_tpg, se_tpg); 244 245 return tpg->lport_tpgt; 246 } 247 248 static void tcm_qla2xxx_complete_mcmd(struct work_struct *work) 249 { 250 struct qla_tgt_mgmt_cmd *mcmd = container_of(work, 251 struct qla_tgt_mgmt_cmd, free_work); 252 253 transport_generic_free_cmd(&mcmd->se_cmd, 0); 254 } 255 256 /* 257 * Called from qla_target_template->free_mcmd(), and will call 258 * tcm_qla2xxx_release_cmd() via normal struct target_core_fabric_ops 259 * release callback. qla_hw_data->hardware_lock is expected to be held 260 */ 261 static void tcm_qla2xxx_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd) 262 { 263 INIT_WORK(&mcmd->free_work, tcm_qla2xxx_complete_mcmd); 264 queue_work(tcm_qla2xxx_free_wq, &mcmd->free_work); 265 } 266 267 static void tcm_qla2xxx_complete_free(struct work_struct *work) 268 { 269 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 270 bool released = false; 271 unsigned long flags; 272 273 cmd->cmd_in_wq = 0; 274 275 WARN_ON(cmd->trc_flags & TRC_CMD_FREE); 276 277 spin_lock_irqsave(&cmd->cmd_lock, flags); 278 cmd->qpair->tgt_counters.qla_core_ret_sta_ctio++; 279 cmd->trc_flags |= TRC_CMD_FREE; 280 cmd->cmd_sent_to_fw = 0; 281 if (cmd->released) 282 released = true; 283 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 284 285 if (released) 286 qlt_free_cmd(cmd); 287 else 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 unsigned long flags; 330 331 if (se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) { 332 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd, 333 struct qla_tgt_mgmt_cmd, se_cmd); 334 qlt_free_mcmd(mcmd); 335 return; 336 } 337 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd); 338 339 spin_lock_irqsave(&cmd->cmd_lock, flags); 340 if (cmd->cmd_sent_to_fw) { 341 cmd->released = 1; 342 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 343 } else { 344 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 345 qlt_free_cmd(cmd); 346 } 347 } 348 349 static void tcm_qla2xxx_release_session(struct kref *kref) 350 { 351 struct fc_port *sess = container_of(kref, 352 struct fc_port, sess_kref); 353 354 qlt_unreg_sess(sess); 355 } 356 357 static void tcm_qla2xxx_put_sess(struct fc_port *sess) 358 { 359 if (!sess) 360 return; 361 362 assert_spin_locked(&sess->vha->hw->tgt.sess_lock); 363 kref_put(&sess->sess_kref, tcm_qla2xxx_release_session); 364 } 365 366 static void tcm_qla2xxx_close_session(struct se_session *se_sess) 367 { 368 struct fc_port *sess = se_sess->fabric_sess_ptr; 369 struct scsi_qla_host *vha; 370 unsigned long flags; 371 372 BUG_ON(!sess); 373 vha = sess->vha; 374 375 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 376 target_sess_cmd_list_set_waiting(se_sess); 377 tcm_qla2xxx_put_sess(sess); 378 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 379 } 380 381 static u32 tcm_qla2xxx_sess_get_index(struct se_session *se_sess) 382 { 383 return 0; 384 } 385 386 static int tcm_qla2xxx_write_pending(struct se_cmd *se_cmd) 387 { 388 struct qla_tgt_cmd *cmd = container_of(se_cmd, 389 struct qla_tgt_cmd, se_cmd); 390 391 if (cmd->aborted) { 392 /* Cmd can loop during Q-full. tcm_qla2xxx_aborted_task 393 * can get ahead of this cmd. tcm_qla2xxx_aborted_task 394 * already kick start the free. 395 */ 396 pr_debug("write_pending aborted cmd[%p] refcount %d " 397 "transport_state %x, t_state %x, se_cmd_flags %x\n", 398 cmd, kref_read(&cmd->se_cmd.cmd_kref), 399 cmd->se_cmd.transport_state, 400 cmd->se_cmd.t_state, 401 cmd->se_cmd.se_cmd_flags); 402 return 0; 403 } 404 cmd->trc_flags |= TRC_XFR_RDY; 405 cmd->bufflen = se_cmd->data_length; 406 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd); 407 408 cmd->sg_cnt = se_cmd->t_data_nents; 409 cmd->sg = se_cmd->t_data_sg; 410 411 cmd->prot_sg_cnt = se_cmd->t_prot_nents; 412 cmd->prot_sg = se_cmd->t_prot_sg; 413 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size; 414 se_cmd->pi_err = 0; 415 416 /* 417 * qla_target.c:qlt_rdy_to_xfer() will call dma_map_sg() to setup 418 * the SGL mappings into PCIe memory for incoming FCP WRITE data. 419 */ 420 return qlt_rdy_to_xfer(cmd); 421 } 422 423 static int tcm_qla2xxx_write_pending_status(struct se_cmd *se_cmd) 424 { 425 unsigned long flags; 426 /* 427 * Check for WRITE_PENDING status to determine if we need to wait for 428 * CTIO aborts to be posted via hardware in tcm_qla2xxx_handle_data(). 429 */ 430 spin_lock_irqsave(&se_cmd->t_state_lock, flags); 431 if (se_cmd->t_state == TRANSPORT_WRITE_PENDING || 432 se_cmd->t_state == TRANSPORT_COMPLETE_QF_WP) { 433 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags); 434 wait_for_completion_timeout(&se_cmd->t_transport_stop_comp, 435 50); 436 return 0; 437 } 438 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags); 439 440 return 0; 441 } 442 443 static void tcm_qla2xxx_set_default_node_attrs(struct se_node_acl *nacl) 444 { 445 return; 446 } 447 448 static int tcm_qla2xxx_get_cmd_state(struct se_cmd *se_cmd) 449 { 450 if (!(se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB)) { 451 struct qla_tgt_cmd *cmd = container_of(se_cmd, 452 struct qla_tgt_cmd, se_cmd); 453 return cmd->state; 454 } 455 456 return 0; 457 } 458 459 /* 460 * Called from process context in qla_target.c:qlt_do_work() code 461 */ 462 static int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd, 463 unsigned char *cdb, uint32_t data_length, int fcp_task_attr, 464 int data_dir, int bidi) 465 { 466 struct se_cmd *se_cmd = &cmd->se_cmd; 467 struct se_session *se_sess; 468 struct fc_port *sess; 469 #ifdef CONFIG_TCM_QLA2XXX_DEBUG 470 struct se_portal_group *se_tpg; 471 struct tcm_qla2xxx_tpg *tpg; 472 #endif 473 int flags = TARGET_SCF_ACK_KREF; 474 475 if (bidi) 476 flags |= TARGET_SCF_BIDI_OP; 477 478 if (se_cmd->cpuid != WORK_CPU_UNBOUND) 479 flags |= TARGET_SCF_USE_CPUID; 480 481 sess = cmd->sess; 482 if (!sess) { 483 pr_err("Unable to locate struct fc_port from qla_tgt_cmd\n"); 484 return -EINVAL; 485 } 486 487 se_sess = sess->se_sess; 488 if (!se_sess) { 489 pr_err("Unable to locate active struct se_session\n"); 490 return -EINVAL; 491 } 492 493 #ifdef CONFIG_TCM_QLA2XXX_DEBUG 494 se_tpg = se_sess->se_tpg; 495 tpg = container_of(se_tpg, struct tcm_qla2xxx_tpg, se_tpg); 496 if (unlikely(tpg->tpg_attrib.jam_host)) { 497 /* return, and dont run target_submit_cmd,discarding command */ 498 return 0; 499 } 500 #endif 501 502 cmd->qpair->tgt_counters.qla_core_sbt_cmd++; 503 return target_submit_cmd(se_cmd, se_sess, cdb, &cmd->sense_buffer[0], 504 cmd->unpacked_lun, data_length, fcp_task_attr, 505 data_dir, flags); 506 } 507 508 static void tcm_qla2xxx_handle_data_work(struct work_struct *work) 509 { 510 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 511 unsigned long flags; 512 513 /* 514 * Ensure that the complete FCP WRITE payload has been received. 515 * Otherwise return an exception via CHECK_CONDITION status. 516 */ 517 cmd->cmd_in_wq = 0; 518 519 spin_lock_irqsave(&cmd->cmd_lock, flags); 520 cmd->cmd_sent_to_fw = 0; 521 522 if (cmd->released) { 523 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 524 qlt_free_cmd(cmd); 525 return; 526 } 527 528 cmd->data_work = 1; 529 if (cmd->aborted) { 530 cmd->data_work_free = 1; 531 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 532 533 tcm_qla2xxx_free_cmd(cmd); 534 return; 535 } 536 spin_unlock_irqrestore(&cmd->cmd_lock, flags); 537 538 cmd->qpair->tgt_counters.qla_core_ret_ctio++; 539 if (!cmd->write_data_transferred) { 540 /* 541 * Check if se_cmd has already been aborted via LUN_RESET, and 542 * waiting upon completion in tcm_qla2xxx_write_pending_status() 543 */ 544 if (cmd->se_cmd.transport_state & CMD_T_ABORTED) { 545 complete(&cmd->se_cmd.t_transport_stop_comp); 546 return; 547 } 548 549 switch (cmd->dif_err_code) { 550 case DIF_ERR_GRD: 551 cmd->se_cmd.pi_err = 552 TCM_LOGICAL_BLOCK_GUARD_CHECK_FAILED; 553 break; 554 case DIF_ERR_REF: 555 cmd->se_cmd.pi_err = 556 TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED; 557 break; 558 case DIF_ERR_APP: 559 cmd->se_cmd.pi_err = 560 TCM_LOGICAL_BLOCK_APP_TAG_CHECK_FAILED; 561 break; 562 case DIF_ERR_NONE: 563 default: 564 break; 565 } 566 567 if (cmd->se_cmd.pi_err) 568 transport_generic_request_failure(&cmd->se_cmd, 569 cmd->se_cmd.pi_err); 570 else 571 transport_generic_request_failure(&cmd->se_cmd, 572 TCM_CHECK_CONDITION_ABORT_CMD); 573 574 return; 575 } 576 577 return target_execute_cmd(&cmd->se_cmd); 578 } 579 580 /* 581 * Called from qla_target.c:qlt_do_ctio_completion() 582 */ 583 static void tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd) 584 { 585 cmd->trc_flags |= TRC_DATA_IN; 586 cmd->cmd_in_wq = 1; 587 INIT_WORK(&cmd->work, tcm_qla2xxx_handle_data_work); 588 queue_work_on(smp_processor_id(), tcm_qla2xxx_free_wq, &cmd->work); 589 } 590 591 static int tcm_qla2xxx_chk_dif_tags(uint32_t tag) 592 { 593 return 0; 594 } 595 596 static int tcm_qla2xxx_dif_tags(struct qla_tgt_cmd *cmd, 597 uint16_t *pfw_prot_opts) 598 { 599 struct se_cmd *se_cmd = &cmd->se_cmd; 600 601 if (!(se_cmd->prot_checks & TARGET_DIF_CHECK_GUARD)) 602 *pfw_prot_opts |= PO_DISABLE_GUARD_CHECK; 603 604 if (!(se_cmd->prot_checks & TARGET_DIF_CHECK_APPTAG)) 605 *pfw_prot_opts |= PO_DIS_APP_TAG_VALD; 606 607 return 0; 608 } 609 610 /* 611 * Called from qla_target.c:qlt_issue_task_mgmt() 612 */ 613 static int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *mcmd, u64 lun, 614 uint16_t tmr_func, uint32_t tag) 615 { 616 struct fc_port *sess = mcmd->sess; 617 struct se_cmd *se_cmd = &mcmd->se_cmd; 618 int transl_tmr_func = 0; 619 int flags = TARGET_SCF_ACK_KREF; 620 621 switch (tmr_func) { 622 case QLA_TGT_ABTS: 623 pr_debug("%ld: ABTS received\n", sess->vha->host_no); 624 transl_tmr_func = TMR_ABORT_TASK; 625 flags |= TARGET_SCF_LOOKUP_LUN_FROM_TAG; 626 break; 627 case QLA_TGT_2G_ABORT_TASK: 628 pr_debug("%ld: 2G Abort Task received\n", sess->vha->host_no); 629 transl_tmr_func = TMR_ABORT_TASK; 630 break; 631 case QLA_TGT_CLEAR_ACA: 632 pr_debug("%ld: CLEAR_ACA received\n", sess->vha->host_no); 633 transl_tmr_func = TMR_CLEAR_ACA; 634 break; 635 case QLA_TGT_TARGET_RESET: 636 pr_debug("%ld: TARGET_RESET received\n", sess->vha->host_no); 637 transl_tmr_func = TMR_TARGET_WARM_RESET; 638 break; 639 case QLA_TGT_LUN_RESET: 640 pr_debug("%ld: LUN_RESET received\n", sess->vha->host_no); 641 transl_tmr_func = TMR_LUN_RESET; 642 break; 643 case QLA_TGT_CLEAR_TS: 644 pr_debug("%ld: CLEAR_TS received\n", sess->vha->host_no); 645 transl_tmr_func = TMR_CLEAR_TASK_SET; 646 break; 647 case QLA_TGT_ABORT_TS: 648 pr_debug("%ld: ABORT_TS received\n", sess->vha->host_no); 649 transl_tmr_func = TMR_ABORT_TASK_SET; 650 break; 651 default: 652 pr_debug("%ld: Unknown task mgmt fn 0x%x\n", 653 sess->vha->host_no, tmr_func); 654 return -ENOSYS; 655 } 656 657 return target_submit_tmr(se_cmd, sess->se_sess, NULL, lun, mcmd, 658 transl_tmr_func, GFP_ATOMIC, tag, flags); 659 } 660 661 static struct qla_tgt_cmd *tcm_qla2xxx_find_cmd_by_tag(struct fc_port *sess, 662 uint64_t tag) 663 { 664 struct qla_tgt_cmd *cmd = NULL; 665 struct se_cmd *secmd; 666 unsigned long flags; 667 668 if (!sess->se_sess) 669 return NULL; 670 671 spin_lock_irqsave(&sess->se_sess->sess_cmd_lock, flags); 672 list_for_each_entry(secmd, &sess->se_sess->sess_cmd_list, se_cmd_list) { 673 /* skip task management functions, including tmr->task_cmd */ 674 if (secmd->se_cmd_flags & SCF_SCSI_TMR_CDB) 675 continue; 676 677 if (secmd->tag == tag) { 678 cmd = container_of(secmd, struct qla_tgt_cmd, se_cmd); 679 break; 680 } 681 } 682 spin_unlock_irqrestore(&sess->se_sess->sess_cmd_lock, flags); 683 684 return cmd; 685 } 686 687 static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd) 688 { 689 struct qla_tgt_cmd *cmd = container_of(se_cmd, 690 struct qla_tgt_cmd, se_cmd); 691 692 if (cmd->aborted) { 693 /* Cmd can loop during Q-full. tcm_qla2xxx_aborted_task 694 * can get ahead of this cmd. tcm_qla2xxx_aborted_task 695 * already kick start the free. 696 */ 697 pr_debug("queue_data_in aborted cmd[%p] refcount %d " 698 "transport_state %x, t_state %x, se_cmd_flags %x\n", 699 cmd, kref_read(&cmd->se_cmd.cmd_kref), 700 cmd->se_cmd.transport_state, 701 cmd->se_cmd.t_state, 702 cmd->se_cmd.se_cmd_flags); 703 return 0; 704 } 705 706 cmd->trc_flags |= TRC_XMIT_DATA; 707 cmd->bufflen = se_cmd->data_length; 708 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd); 709 710 cmd->sg_cnt = se_cmd->t_data_nents; 711 cmd->sg = se_cmd->t_data_sg; 712 cmd->offset = 0; 713 714 cmd->prot_sg_cnt = se_cmd->t_prot_nents; 715 cmd->prot_sg = se_cmd->t_prot_sg; 716 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size; 717 se_cmd->pi_err = 0; 718 719 /* 720 * Now queue completed DATA_IN the qla2xxx LLD and response ring 721 */ 722 return qlt_xmit_response(cmd, QLA_TGT_XMIT_DATA|QLA_TGT_XMIT_STATUS, 723 se_cmd->scsi_status); 724 } 725 726 static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd) 727 { 728 struct qla_tgt_cmd *cmd = container_of(se_cmd, 729 struct qla_tgt_cmd, se_cmd); 730 int xmit_type = QLA_TGT_XMIT_STATUS; 731 732 if (cmd->aborted) { 733 /* 734 * Cmd can loop during Q-full. tcm_qla2xxx_aborted_task 735 * can get ahead of this cmd. tcm_qla2xxx_aborted_task 736 * already kick start the free. 737 */ 738 pr_debug( 739 "queue_data_in aborted cmd[%p] refcount %d transport_state %x, t_state %x, se_cmd_flags %x\n", 740 cmd, kref_read(&cmd->se_cmd.cmd_kref), 741 cmd->se_cmd.transport_state, cmd->se_cmd.t_state, 742 cmd->se_cmd.se_cmd_flags); 743 return 0; 744 } 745 cmd->bufflen = se_cmd->data_length; 746 cmd->sg = NULL; 747 cmd->sg_cnt = 0; 748 cmd->offset = 0; 749 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd); 750 cmd->trc_flags |= TRC_XMIT_STATUS; 751 752 if (se_cmd->data_direction == DMA_FROM_DEVICE) { 753 /* 754 * For FCP_READ with CHECK_CONDITION status, clear cmd->bufflen 755 * for qla_tgt_xmit_response LLD code 756 */ 757 if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) { 758 se_cmd->se_cmd_flags &= ~SCF_OVERFLOW_BIT; 759 se_cmd->residual_count = 0; 760 } 761 se_cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT; 762 se_cmd->residual_count += se_cmd->data_length; 763 764 cmd->bufflen = 0; 765 } 766 /* 767 * Now queue status response to qla2xxx LLD code and response ring 768 */ 769 return qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status); 770 } 771 772 static void tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd) 773 { 774 struct se_tmr_req *se_tmr = se_cmd->se_tmr_req; 775 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd, 776 struct qla_tgt_mgmt_cmd, se_cmd); 777 778 pr_debug("queue_tm_rsp: mcmd: %p func: 0x%02x response: 0x%02x\n", 779 mcmd, se_tmr->function, se_tmr->response); 780 /* 781 * Do translation between TCM TM response codes and 782 * QLA2xxx FC TM response codes. 783 */ 784 switch (se_tmr->response) { 785 case TMR_FUNCTION_COMPLETE: 786 mcmd->fc_tm_rsp = FC_TM_SUCCESS; 787 break; 788 case TMR_TASK_DOES_NOT_EXIST: 789 mcmd->fc_tm_rsp = FC_TM_BAD_CMD; 790 break; 791 case TMR_FUNCTION_REJECTED: 792 mcmd->fc_tm_rsp = FC_TM_REJECT; 793 break; 794 case TMR_LUN_DOES_NOT_EXIST: 795 default: 796 mcmd->fc_tm_rsp = FC_TM_FAILED; 797 break; 798 } 799 /* 800 * Queue the TM response to QLA2xxx LLD to build a 801 * CTIO response packet. 802 */ 803 qlt_xmit_tm_rsp(mcmd); 804 } 805 806 static void tcm_qla2xxx_aborted_task(struct se_cmd *se_cmd) 807 { 808 struct qla_tgt_cmd *cmd = container_of(se_cmd, 809 struct qla_tgt_cmd, se_cmd); 810 811 if (qlt_abort_cmd(cmd)) 812 return; 813 } 814 815 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *, 816 struct tcm_qla2xxx_nacl *, struct fc_port *); 817 /* 818 * Expected to be called with struct qla_hw_data->tgt.sess_lock held 819 */ 820 static void tcm_qla2xxx_clear_nacl_from_fcport_map(struct fc_port *sess) 821 { 822 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl; 823 struct se_portal_group *se_tpg = se_nacl->se_tpg; 824 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn; 825 struct tcm_qla2xxx_lport *lport = container_of(se_wwn, 826 struct tcm_qla2xxx_lport, lport_wwn); 827 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl, 828 struct tcm_qla2xxx_nacl, se_node_acl); 829 void *node; 830 831 pr_debug("fc_rport domain: port_id 0x%06x\n", nacl->nport_id); 832 833 node = btree_remove32(&lport->lport_fcport_map, nacl->nport_id); 834 if (WARN_ON(node && (node != se_nacl))) { 835 /* 836 * The nacl no longer matches what we think it should be. 837 * Most likely a new dynamic acl has been added while 838 * someone dropped the hardware lock. It clearly is a 839 * bug elsewhere, but this bit can't make things worse. 840 */ 841 btree_insert32(&lport->lport_fcport_map, nacl->nport_id, 842 node, GFP_ATOMIC); 843 } 844 845 pr_debug("Removed from fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%06x\n", 846 se_nacl, nacl->nport_wwnn, nacl->nport_id); 847 /* 848 * Now clear the se_nacl and session pointers from our HW lport lookup 849 * table mapping for this initiator's fabric S_ID and LOOP_ID entries. 850 * 851 * This is done ahead of callbacks into tcm_qla2xxx_free_session() -> 852 * target_wait_for_sess_cmds() before the session waits for outstanding 853 * I/O to complete, to avoid a race between session shutdown execution 854 * and incoming ATIOs or TMRs picking up a stale se_node_act reference. 855 */ 856 tcm_qla2xxx_clear_sess_lookup(lport, nacl, sess); 857 } 858 859 static void tcm_qla2xxx_shutdown_sess(struct fc_port *sess) 860 { 861 assert_spin_locked(&sess->vha->hw->tgt.sess_lock); 862 target_sess_cmd_list_set_waiting(sess->se_sess); 863 } 864 865 static int tcm_qla2xxx_init_nodeacl(struct se_node_acl *se_nacl, 866 const char *name) 867 { 868 struct tcm_qla2xxx_nacl *nacl = 869 container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 870 u64 wwnn; 871 872 if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0) 873 return -EINVAL; 874 875 nacl->nport_wwnn = wwnn; 876 tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn); 877 878 return 0; 879 } 880 881 /* Start items for tcm_qla2xxx_tpg_attrib_cit */ 882 883 #define DEF_QLA_TPG_ATTRIB(name) \ 884 \ 885 static ssize_t tcm_qla2xxx_tpg_attrib_##name##_show( \ 886 struct config_item *item, char *page) \ 887 { \ 888 struct se_portal_group *se_tpg = attrib_to_tpg(item); \ 889 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \ 890 struct tcm_qla2xxx_tpg, se_tpg); \ 891 \ 892 return sprintf(page, "%u\n", tpg->tpg_attrib.name); \ 893 } \ 894 \ 895 static ssize_t tcm_qla2xxx_tpg_attrib_##name##_store( \ 896 struct config_item *item, const char *page, size_t count) \ 897 { \ 898 struct se_portal_group *se_tpg = attrib_to_tpg(item); \ 899 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \ 900 struct tcm_qla2xxx_tpg, se_tpg); \ 901 struct tcm_qla2xxx_tpg_attrib *a = &tpg->tpg_attrib; \ 902 unsigned long val; \ 903 int ret; \ 904 \ 905 ret = kstrtoul(page, 0, &val); \ 906 if (ret < 0) { \ 907 pr_err("kstrtoul() failed with" \ 908 " ret: %d\n", ret); \ 909 return -EINVAL; \ 910 } \ 911 \ 912 if ((val != 0) && (val != 1)) { \ 913 pr_err("Illegal boolean value %lu\n", val); \ 914 return -EINVAL; \ 915 } \ 916 \ 917 a->name = val; \ 918 \ 919 return count; \ 920 } \ 921 CONFIGFS_ATTR(tcm_qla2xxx_tpg_attrib_, name) 922 923 DEF_QLA_TPG_ATTRIB(generate_node_acls); 924 DEF_QLA_TPG_ATTRIB(cache_dynamic_acls); 925 DEF_QLA_TPG_ATTRIB(demo_mode_write_protect); 926 DEF_QLA_TPG_ATTRIB(prod_mode_write_protect); 927 DEF_QLA_TPG_ATTRIB(demo_mode_login_only); 928 #ifdef CONFIG_TCM_QLA2XXX_DEBUG 929 DEF_QLA_TPG_ATTRIB(jam_host); 930 #endif 931 932 static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = { 933 &tcm_qla2xxx_tpg_attrib_attr_generate_node_acls, 934 &tcm_qla2xxx_tpg_attrib_attr_cache_dynamic_acls, 935 &tcm_qla2xxx_tpg_attrib_attr_demo_mode_write_protect, 936 &tcm_qla2xxx_tpg_attrib_attr_prod_mode_write_protect, 937 &tcm_qla2xxx_tpg_attrib_attr_demo_mode_login_only, 938 #ifdef CONFIG_TCM_QLA2XXX_DEBUG 939 &tcm_qla2xxx_tpg_attrib_attr_jam_host, 940 #endif 941 NULL, 942 }; 943 944 /* End items for tcm_qla2xxx_tpg_attrib_cit */ 945 946 static ssize_t tcm_qla2xxx_tpg_enable_show(struct config_item *item, 947 char *page) 948 { 949 struct se_portal_group *se_tpg = to_tpg(item); 950 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 951 struct tcm_qla2xxx_tpg, se_tpg); 952 953 return snprintf(page, PAGE_SIZE, "%d\n", 954 atomic_read(&tpg->lport_tpg_enabled)); 955 } 956 957 static ssize_t tcm_qla2xxx_tpg_enable_store(struct config_item *item, 958 const char *page, size_t count) 959 { 960 struct se_portal_group *se_tpg = to_tpg(item); 961 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn; 962 struct tcm_qla2xxx_lport *lport = container_of(se_wwn, 963 struct tcm_qla2xxx_lport, lport_wwn); 964 struct scsi_qla_host *vha = lport->qla_vha; 965 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 966 struct tcm_qla2xxx_tpg, se_tpg); 967 unsigned long op; 968 int rc; 969 970 rc = kstrtoul(page, 0, &op); 971 if (rc < 0) { 972 pr_err("kstrtoul() returned %d\n", rc); 973 return -EINVAL; 974 } 975 if ((op != 1) && (op != 0)) { 976 pr_err("Illegal value for tpg_enable: %lu\n", op); 977 return -EINVAL; 978 } 979 if (op) { 980 if (atomic_read(&tpg->lport_tpg_enabled)) 981 return -EEXIST; 982 983 atomic_set(&tpg->lport_tpg_enabled, 1); 984 qlt_enable_vha(vha); 985 } else { 986 if (!atomic_read(&tpg->lport_tpg_enabled)) 987 return count; 988 989 atomic_set(&tpg->lport_tpg_enabled, 0); 990 qlt_stop_phase1(vha->vha_tgt.qla_tgt); 991 } 992 993 return count; 994 } 995 996 static ssize_t tcm_qla2xxx_tpg_dynamic_sessions_show(struct config_item *item, 997 char *page) 998 { 999 return target_show_dynamic_sessions(to_tpg(item), page); 1000 } 1001 1002 static ssize_t tcm_qla2xxx_tpg_fabric_prot_type_store(struct config_item *item, 1003 const char *page, size_t count) 1004 { 1005 struct se_portal_group *se_tpg = to_tpg(item); 1006 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1007 struct tcm_qla2xxx_tpg, se_tpg); 1008 unsigned long val; 1009 int ret = kstrtoul(page, 0, &val); 1010 1011 if (ret) { 1012 pr_err("kstrtoul() returned %d for fabric_prot_type\n", ret); 1013 return ret; 1014 } 1015 if (val != 0 && val != 1 && val != 3) { 1016 pr_err("Invalid qla2xxx fabric_prot_type: %lu\n", val); 1017 return -EINVAL; 1018 } 1019 tpg->tpg_attrib.fabric_prot_type = val; 1020 1021 return count; 1022 } 1023 1024 static ssize_t tcm_qla2xxx_tpg_fabric_prot_type_show(struct config_item *item, 1025 char *page) 1026 { 1027 struct se_portal_group *se_tpg = to_tpg(item); 1028 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1029 struct tcm_qla2xxx_tpg, se_tpg); 1030 1031 return sprintf(page, "%d\n", tpg->tpg_attrib.fabric_prot_type); 1032 } 1033 1034 CONFIGFS_ATTR(tcm_qla2xxx_tpg_, enable); 1035 CONFIGFS_ATTR_RO(tcm_qla2xxx_tpg_, dynamic_sessions); 1036 CONFIGFS_ATTR(tcm_qla2xxx_tpg_, fabric_prot_type); 1037 1038 static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = { 1039 &tcm_qla2xxx_tpg_attr_enable, 1040 &tcm_qla2xxx_tpg_attr_dynamic_sessions, 1041 &tcm_qla2xxx_tpg_attr_fabric_prot_type, 1042 NULL, 1043 }; 1044 1045 static struct se_portal_group *tcm_qla2xxx_make_tpg(struct se_wwn *wwn, 1046 const char *name) 1047 { 1048 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1049 struct tcm_qla2xxx_lport, lport_wwn); 1050 struct tcm_qla2xxx_tpg *tpg; 1051 unsigned long tpgt; 1052 int ret; 1053 1054 if (strstr(name, "tpgt_") != name) 1055 return ERR_PTR(-EINVAL); 1056 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX) 1057 return ERR_PTR(-EINVAL); 1058 1059 if ((tpgt != 1)) { 1060 pr_err("In non NPIV mode, a single TPG=1 is used for HW port mappings\n"); 1061 return ERR_PTR(-ENOSYS); 1062 } 1063 1064 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL); 1065 if (!tpg) { 1066 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n"); 1067 return ERR_PTR(-ENOMEM); 1068 } 1069 tpg->lport = lport; 1070 tpg->lport_tpgt = tpgt; 1071 /* 1072 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic 1073 * NodeACLs 1074 */ 1075 tpg->tpg_attrib.generate_node_acls = 1; 1076 tpg->tpg_attrib.demo_mode_write_protect = 1; 1077 tpg->tpg_attrib.cache_dynamic_acls = 1; 1078 tpg->tpg_attrib.demo_mode_login_only = 1; 1079 tpg->tpg_attrib.jam_host = 0; 1080 1081 ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP); 1082 if (ret < 0) { 1083 kfree(tpg); 1084 return NULL; 1085 } 1086 1087 lport->tpg_1 = tpg; 1088 1089 return &tpg->se_tpg; 1090 } 1091 1092 static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg) 1093 { 1094 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1095 struct tcm_qla2xxx_tpg, se_tpg); 1096 struct tcm_qla2xxx_lport *lport = tpg->lport; 1097 struct scsi_qla_host *vha = lport->qla_vha; 1098 /* 1099 * Call into qla2x_target.c LLD logic to shutdown the active 1100 * FC Nexuses and disable target mode operation for this qla_hw_data 1101 */ 1102 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stop) 1103 qlt_stop_phase1(vha->vha_tgt.qla_tgt); 1104 1105 core_tpg_deregister(se_tpg); 1106 /* 1107 * Clear local TPG=1 pointer for non NPIV mode. 1108 */ 1109 lport->tpg_1 = NULL; 1110 kfree(tpg); 1111 } 1112 1113 static ssize_t tcm_qla2xxx_npiv_tpg_enable_show(struct config_item *item, 1114 char *page) 1115 { 1116 return tcm_qla2xxx_tpg_enable_show(item, page); 1117 } 1118 1119 static ssize_t tcm_qla2xxx_npiv_tpg_enable_store(struct config_item *item, 1120 const char *page, size_t count) 1121 { 1122 struct se_portal_group *se_tpg = to_tpg(item); 1123 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn; 1124 struct tcm_qla2xxx_lport *lport = container_of(se_wwn, 1125 struct tcm_qla2xxx_lport, lport_wwn); 1126 struct scsi_qla_host *vha = lport->qla_vha; 1127 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1128 struct tcm_qla2xxx_tpg, se_tpg); 1129 unsigned long op; 1130 int rc; 1131 1132 rc = kstrtoul(page, 0, &op); 1133 if (rc < 0) { 1134 pr_err("kstrtoul() returned %d\n", rc); 1135 return -EINVAL; 1136 } 1137 if ((op != 1) && (op != 0)) { 1138 pr_err("Illegal value for tpg_enable: %lu\n", op); 1139 return -EINVAL; 1140 } 1141 if (op) { 1142 if (atomic_read(&tpg->lport_tpg_enabled)) 1143 return -EEXIST; 1144 1145 atomic_set(&tpg->lport_tpg_enabled, 1); 1146 qlt_enable_vha(vha); 1147 } else { 1148 if (!atomic_read(&tpg->lport_tpg_enabled)) 1149 return count; 1150 1151 atomic_set(&tpg->lport_tpg_enabled, 0); 1152 qlt_stop_phase1(vha->vha_tgt.qla_tgt); 1153 } 1154 1155 return count; 1156 } 1157 1158 CONFIGFS_ATTR(tcm_qla2xxx_npiv_tpg_, enable); 1159 1160 static struct configfs_attribute *tcm_qla2xxx_npiv_tpg_attrs[] = { 1161 &tcm_qla2xxx_npiv_tpg_attr_enable, 1162 NULL, 1163 }; 1164 1165 static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg(struct se_wwn *wwn, 1166 const char *name) 1167 { 1168 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1169 struct tcm_qla2xxx_lport, lport_wwn); 1170 struct tcm_qla2xxx_tpg *tpg; 1171 unsigned long tpgt; 1172 int ret; 1173 1174 if (strstr(name, "tpgt_") != name) 1175 return ERR_PTR(-EINVAL); 1176 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX) 1177 return ERR_PTR(-EINVAL); 1178 1179 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL); 1180 if (!tpg) { 1181 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n"); 1182 return ERR_PTR(-ENOMEM); 1183 } 1184 tpg->lport = lport; 1185 tpg->lport_tpgt = tpgt; 1186 1187 /* 1188 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic 1189 * NodeACLs 1190 */ 1191 tpg->tpg_attrib.generate_node_acls = 1; 1192 tpg->tpg_attrib.demo_mode_write_protect = 1; 1193 tpg->tpg_attrib.cache_dynamic_acls = 1; 1194 tpg->tpg_attrib.demo_mode_login_only = 1; 1195 1196 ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP); 1197 if (ret < 0) { 1198 kfree(tpg); 1199 return NULL; 1200 } 1201 lport->tpg_1 = tpg; 1202 return &tpg->se_tpg; 1203 } 1204 1205 /* 1206 * Expected to be called with struct qla_hw_data->tgt.sess_lock held 1207 */ 1208 static struct fc_port *tcm_qla2xxx_find_sess_by_s_id( 1209 scsi_qla_host_t *vha, 1210 const uint8_t *s_id) 1211 { 1212 struct tcm_qla2xxx_lport *lport; 1213 struct se_node_acl *se_nacl; 1214 struct tcm_qla2xxx_nacl *nacl; 1215 u32 key; 1216 1217 lport = vha->vha_tgt.target_lport_ptr; 1218 if (!lport) { 1219 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1220 dump_stack(); 1221 return NULL; 1222 } 1223 1224 key = sid_to_key(s_id); 1225 pr_debug("find_sess_by_s_id: 0x%06x\n", key); 1226 1227 se_nacl = btree_lookup32(&lport->lport_fcport_map, key); 1228 if (!se_nacl) { 1229 pr_debug("Unable to locate s_id: 0x%06x\n", key); 1230 return NULL; 1231 } 1232 pr_debug("find_sess_by_s_id: located se_nacl: %p, initiatorname: %s\n", 1233 se_nacl, se_nacl->initiatorname); 1234 1235 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1236 if (!nacl->fc_port) { 1237 pr_err("Unable to locate struct fc_port\n"); 1238 return NULL; 1239 } 1240 1241 return nacl->fc_port; 1242 } 1243 1244 /* 1245 * Expected to be called with struct qla_hw_data->tgt.sess_lock held 1246 */ 1247 static void tcm_qla2xxx_set_sess_by_s_id( 1248 struct tcm_qla2xxx_lport *lport, 1249 struct se_node_acl *new_se_nacl, 1250 struct tcm_qla2xxx_nacl *nacl, 1251 struct se_session *se_sess, 1252 struct fc_port *fc_port, 1253 uint8_t *s_id) 1254 { 1255 u32 key; 1256 void *slot; 1257 int rc; 1258 1259 key = sid_to_key(s_id); 1260 pr_debug("set_sess_by_s_id: %06x\n", key); 1261 1262 slot = btree_lookup32(&lport->lport_fcport_map, key); 1263 if (!slot) { 1264 if (new_se_nacl) { 1265 pr_debug("Setting up new fc_port entry to new_se_nacl\n"); 1266 nacl->nport_id = key; 1267 rc = btree_insert32(&lport->lport_fcport_map, key, 1268 new_se_nacl, GFP_ATOMIC); 1269 if (rc) 1270 printk(KERN_ERR "Unable to insert s_id into fcport_map: %06x\n", 1271 (int)key); 1272 } else { 1273 pr_debug("Wiping nonexisting fc_port entry\n"); 1274 } 1275 1276 fc_port->se_sess = se_sess; 1277 nacl->fc_port = fc_port; 1278 return; 1279 } 1280 1281 if (nacl->fc_port) { 1282 if (new_se_nacl == NULL) { 1283 pr_debug("Clearing existing nacl->fc_port and fc_port entry\n"); 1284 btree_remove32(&lport->lport_fcport_map, key); 1285 nacl->fc_port = NULL; 1286 return; 1287 } 1288 pr_debug("Replacing existing nacl->fc_port and fc_port entry\n"); 1289 btree_update32(&lport->lport_fcport_map, key, new_se_nacl); 1290 fc_port->se_sess = se_sess; 1291 nacl->fc_port = fc_port; 1292 return; 1293 } 1294 1295 if (new_se_nacl == NULL) { 1296 pr_debug("Clearing existing fc_port entry\n"); 1297 btree_remove32(&lport->lport_fcport_map, key); 1298 return; 1299 } 1300 1301 pr_debug("Replacing existing fc_port entry w/o active nacl->fc_port\n"); 1302 btree_update32(&lport->lport_fcport_map, key, new_se_nacl); 1303 fc_port->se_sess = se_sess; 1304 nacl->fc_port = fc_port; 1305 1306 pr_debug("Setup nacl->fc_port %p by s_id for se_nacl: %p, initiatorname: %s\n", 1307 nacl->fc_port, new_se_nacl, new_se_nacl->initiatorname); 1308 } 1309 1310 /* 1311 * Expected to be called with struct qla_hw_data->tgt.sess_lock held 1312 */ 1313 static struct fc_port *tcm_qla2xxx_find_sess_by_loop_id( 1314 scsi_qla_host_t *vha, 1315 const uint16_t loop_id) 1316 { 1317 struct tcm_qla2xxx_lport *lport; 1318 struct se_node_acl *se_nacl; 1319 struct tcm_qla2xxx_nacl *nacl; 1320 struct tcm_qla2xxx_fc_loopid *fc_loopid; 1321 1322 lport = vha->vha_tgt.target_lport_ptr; 1323 if (!lport) { 1324 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1325 dump_stack(); 1326 return NULL; 1327 } 1328 1329 pr_debug("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id); 1330 1331 fc_loopid = lport->lport_loopid_map + loop_id; 1332 se_nacl = fc_loopid->se_nacl; 1333 if (!se_nacl) { 1334 pr_debug("Unable to locate se_nacl by loop_id: 0x%04x\n", 1335 loop_id); 1336 return NULL; 1337 } 1338 1339 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1340 1341 if (!nacl->fc_port) { 1342 pr_err("Unable to locate struct fc_port\n"); 1343 return NULL; 1344 } 1345 1346 return nacl->fc_port; 1347 } 1348 1349 /* 1350 * Expected to be called with struct qla_hw_data->tgt.sess_lock held 1351 */ 1352 static void tcm_qla2xxx_set_sess_by_loop_id( 1353 struct tcm_qla2xxx_lport *lport, 1354 struct se_node_acl *new_se_nacl, 1355 struct tcm_qla2xxx_nacl *nacl, 1356 struct se_session *se_sess, 1357 struct fc_port *fc_port, 1358 uint16_t loop_id) 1359 { 1360 struct se_node_acl *saved_nacl; 1361 struct tcm_qla2xxx_fc_loopid *fc_loopid; 1362 1363 pr_debug("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id); 1364 1365 fc_loopid = &((struct tcm_qla2xxx_fc_loopid *) 1366 lport->lport_loopid_map)[loop_id]; 1367 1368 saved_nacl = fc_loopid->se_nacl; 1369 if (!saved_nacl) { 1370 pr_debug("Setting up new fc_loopid->se_nacl to new_se_nacl\n"); 1371 fc_loopid->se_nacl = new_se_nacl; 1372 if (fc_port->se_sess != se_sess) 1373 fc_port->se_sess = se_sess; 1374 if (nacl->fc_port != fc_port) 1375 nacl->fc_port = fc_port; 1376 return; 1377 } 1378 1379 if (nacl->fc_port) { 1380 if (new_se_nacl == NULL) { 1381 pr_debug("Clearing nacl->fc_port and fc_loopid->se_nacl\n"); 1382 fc_loopid->se_nacl = NULL; 1383 nacl->fc_port = NULL; 1384 return; 1385 } 1386 1387 pr_debug("Replacing existing nacl->fc_port and fc_loopid->se_nacl\n"); 1388 fc_loopid->se_nacl = new_se_nacl; 1389 if (fc_port->se_sess != se_sess) 1390 fc_port->se_sess = se_sess; 1391 if (nacl->fc_port != fc_port) 1392 nacl->fc_port = fc_port; 1393 return; 1394 } 1395 1396 if (new_se_nacl == NULL) { 1397 pr_debug("Clearing fc_loopid->se_nacl\n"); 1398 fc_loopid->se_nacl = NULL; 1399 return; 1400 } 1401 1402 pr_debug("Replacing existing fc_loopid->se_nacl w/o active nacl->fc_port\n"); 1403 fc_loopid->se_nacl = new_se_nacl; 1404 if (fc_port->se_sess != se_sess) 1405 fc_port->se_sess = se_sess; 1406 if (nacl->fc_port != fc_port) 1407 nacl->fc_port = fc_port; 1408 1409 pr_debug("Setup nacl->fc_port %p by loop_id for se_nacl: %p, initiatorname: %s\n", 1410 nacl->fc_port, new_se_nacl, new_se_nacl->initiatorname); 1411 } 1412 1413 /* 1414 * Should always be called with qla_hw_data->tgt.sess_lock held. 1415 */ 1416 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *lport, 1417 struct tcm_qla2xxx_nacl *nacl, struct fc_port *sess) 1418 { 1419 struct se_session *se_sess = sess->se_sess; 1420 unsigned char be_sid[3]; 1421 1422 be_sid[0] = sess->d_id.b.domain; 1423 be_sid[1] = sess->d_id.b.area; 1424 be_sid[2] = sess->d_id.b.al_pa; 1425 1426 tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess, 1427 sess, be_sid); 1428 tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess, 1429 sess, sess->loop_id); 1430 } 1431 1432 static void tcm_qla2xxx_free_session(struct fc_port *sess) 1433 { 1434 struct qla_tgt *tgt = sess->tgt; 1435 struct qla_hw_data *ha = tgt->ha; 1436 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev); 1437 struct se_session *se_sess; 1438 struct tcm_qla2xxx_lport *lport; 1439 1440 BUG_ON(in_interrupt()); 1441 1442 se_sess = sess->se_sess; 1443 if (!se_sess) { 1444 pr_err("struct fc_port->se_sess is NULL\n"); 1445 dump_stack(); 1446 return; 1447 } 1448 1449 lport = vha->vha_tgt.target_lport_ptr; 1450 if (!lport) { 1451 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1452 dump_stack(); 1453 return; 1454 } 1455 target_wait_for_sess_cmds(se_sess); 1456 1457 target_remove_session(se_sess); 1458 } 1459 1460 static int tcm_qla2xxx_session_cb(struct se_portal_group *se_tpg, 1461 struct se_session *se_sess, void *p) 1462 { 1463 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1464 struct tcm_qla2xxx_tpg, se_tpg); 1465 struct tcm_qla2xxx_lport *lport = tpg->lport; 1466 struct qla_hw_data *ha = lport->qla_vha->hw; 1467 struct se_node_acl *se_nacl = se_sess->se_node_acl; 1468 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl, 1469 struct tcm_qla2xxx_nacl, se_node_acl); 1470 struct fc_port *qlat_sess = p; 1471 uint16_t loop_id = qlat_sess->loop_id; 1472 unsigned long flags; 1473 unsigned char be_sid[3]; 1474 1475 be_sid[0] = qlat_sess->d_id.b.domain; 1476 be_sid[1] = qlat_sess->d_id.b.area; 1477 be_sid[2] = qlat_sess->d_id.b.al_pa; 1478 1479 /* 1480 * And now setup se_nacl and session pointers into HW lport internal 1481 * mappings for fabric S_ID and LOOP_ID. 1482 */ 1483 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1484 tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl, 1485 se_sess, qlat_sess, be_sid); 1486 tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl, 1487 se_sess, qlat_sess, loop_id); 1488 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1489 1490 return 0; 1491 } 1492 1493 /* 1494 * Called via qlt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl() 1495 * to locate struct se_node_acl 1496 */ 1497 static int tcm_qla2xxx_check_initiator_node_acl( 1498 scsi_qla_host_t *vha, 1499 unsigned char *fc_wwpn, 1500 struct fc_port *qlat_sess) 1501 { 1502 struct qla_hw_data *ha = vha->hw; 1503 struct tcm_qla2xxx_lport *lport; 1504 struct tcm_qla2xxx_tpg *tpg; 1505 struct se_session *se_sess; 1506 unsigned char port_name[36]; 1507 int num_tags = (ha->cur_fw_xcb_count) ? ha->cur_fw_xcb_count : 1508 TCM_QLA2XXX_DEFAULT_TAGS; 1509 1510 lport = vha->vha_tgt.target_lport_ptr; 1511 if (!lport) { 1512 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1513 dump_stack(); 1514 return -EINVAL; 1515 } 1516 /* 1517 * Locate the TPG=1 reference.. 1518 */ 1519 tpg = lport->tpg_1; 1520 if (!tpg) { 1521 pr_err("Unable to lcoate struct tcm_qla2xxx_lport->tpg_1\n"); 1522 return -EINVAL; 1523 } 1524 /* 1525 * Format the FCP Initiator port_name into colon seperated values to 1526 * match the format by tcm_qla2xxx explict ConfigFS NodeACLs. 1527 */ 1528 memset(&port_name, 0, 36); 1529 snprintf(port_name, sizeof(port_name), "%8phC", fc_wwpn); 1530 /* 1531 * Locate our struct se_node_acl either from an explict NodeACL created 1532 * via ConfigFS, or via running in TPG demo mode. 1533 */ 1534 se_sess = target_setup_session(&tpg->se_tpg, num_tags, 1535 sizeof(struct qla_tgt_cmd), 1536 TARGET_PROT_ALL, port_name, 1537 qlat_sess, tcm_qla2xxx_session_cb); 1538 if (IS_ERR(se_sess)) 1539 return PTR_ERR(se_sess); 1540 1541 return 0; 1542 } 1543 1544 static void tcm_qla2xxx_update_sess(struct fc_port *sess, port_id_t s_id, 1545 uint16_t loop_id, bool conf_compl_supported) 1546 { 1547 struct qla_tgt *tgt = sess->tgt; 1548 struct qla_hw_data *ha = tgt->ha; 1549 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev); 1550 struct tcm_qla2xxx_lport *lport = vha->vha_tgt.target_lport_ptr; 1551 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl; 1552 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl, 1553 struct tcm_qla2xxx_nacl, se_node_acl); 1554 u32 key; 1555 1556 1557 if (sess->loop_id != loop_id || sess->d_id.b24 != s_id.b24) 1558 pr_info("Updating session %p from port %8phC loop_id %d -> %d s_id %x:%x:%x -> %x:%x:%x\n", 1559 sess, sess->port_name, 1560 sess->loop_id, loop_id, sess->d_id.b.domain, 1561 sess->d_id.b.area, sess->d_id.b.al_pa, s_id.b.domain, 1562 s_id.b.area, s_id.b.al_pa); 1563 1564 if (sess->loop_id != loop_id) { 1565 /* 1566 * Because we can shuffle loop IDs around and we 1567 * update different sessions non-atomically, we might 1568 * have overwritten this session's old loop ID 1569 * already, and we might end up overwriting some other 1570 * session that will be updated later. So we have to 1571 * be extra careful and we can't warn about those things... 1572 */ 1573 if (lport->lport_loopid_map[sess->loop_id].se_nacl == se_nacl) 1574 lport->lport_loopid_map[sess->loop_id].se_nacl = NULL; 1575 1576 lport->lport_loopid_map[loop_id].se_nacl = se_nacl; 1577 1578 sess->loop_id = loop_id; 1579 } 1580 1581 if (sess->d_id.b24 != s_id.b24) { 1582 key = (((u32) sess->d_id.b.domain << 16) | 1583 ((u32) sess->d_id.b.area << 8) | 1584 ((u32) sess->d_id.b.al_pa)); 1585 1586 if (btree_lookup32(&lport->lport_fcport_map, key)) 1587 WARN(btree_remove32(&lport->lport_fcport_map, key) != 1588 se_nacl, "Found wrong se_nacl when updating s_id %x:%x:%x\n", 1589 sess->d_id.b.domain, sess->d_id.b.area, 1590 sess->d_id.b.al_pa); 1591 else 1592 WARN(1, "No lport_fcport_map entry for s_id %x:%x:%x\n", 1593 sess->d_id.b.domain, sess->d_id.b.area, 1594 sess->d_id.b.al_pa); 1595 1596 key = (((u32) s_id.b.domain << 16) | 1597 ((u32) s_id.b.area << 8) | 1598 ((u32) s_id.b.al_pa)); 1599 1600 if (btree_lookup32(&lport->lport_fcport_map, key)) { 1601 WARN(1, "Already have lport_fcport_map entry for s_id %x:%x:%x\n", 1602 s_id.b.domain, s_id.b.area, s_id.b.al_pa); 1603 btree_update32(&lport->lport_fcport_map, key, se_nacl); 1604 } else { 1605 btree_insert32(&lport->lport_fcport_map, key, se_nacl, 1606 GFP_ATOMIC); 1607 } 1608 1609 sess->d_id = s_id; 1610 nacl->nport_id = key; 1611 } 1612 1613 sess->conf_compl_supported = conf_compl_supported; 1614 1615 } 1616 1617 /* 1618 * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path. 1619 */ 1620 static struct qla_tgt_func_tmpl tcm_qla2xxx_template = { 1621 .find_cmd_by_tag = tcm_qla2xxx_find_cmd_by_tag, 1622 .handle_cmd = tcm_qla2xxx_handle_cmd, 1623 .handle_data = tcm_qla2xxx_handle_data, 1624 .handle_tmr = tcm_qla2xxx_handle_tmr, 1625 .free_cmd = tcm_qla2xxx_free_cmd, 1626 .free_mcmd = tcm_qla2xxx_free_mcmd, 1627 .free_session = tcm_qla2xxx_free_session, 1628 .update_sess = tcm_qla2xxx_update_sess, 1629 .check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl, 1630 .find_sess_by_s_id = tcm_qla2xxx_find_sess_by_s_id, 1631 .find_sess_by_loop_id = tcm_qla2xxx_find_sess_by_loop_id, 1632 .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map, 1633 .put_sess = tcm_qla2xxx_put_sess, 1634 .shutdown_sess = tcm_qla2xxx_shutdown_sess, 1635 .get_dif_tags = tcm_qla2xxx_dif_tags, 1636 .chk_dif_tags = tcm_qla2xxx_chk_dif_tags, 1637 }; 1638 1639 static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport) 1640 { 1641 int rc; 1642 1643 rc = btree_init32(&lport->lport_fcport_map); 1644 if (rc) { 1645 pr_err("Unable to initialize lport->lport_fcport_map btree\n"); 1646 return rc; 1647 } 1648 1649 lport->lport_loopid_map = 1650 vzalloc(array_size(65536, 1651 sizeof(struct tcm_qla2xxx_fc_loopid))); 1652 if (!lport->lport_loopid_map) { 1653 pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n", 1654 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536); 1655 btree_destroy32(&lport->lport_fcport_map); 1656 return -ENOMEM; 1657 } 1658 pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n", 1659 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536); 1660 return 0; 1661 } 1662 1663 static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha, 1664 void *target_lport_ptr, 1665 u64 npiv_wwpn, u64 npiv_wwnn) 1666 { 1667 struct qla_hw_data *ha = vha->hw; 1668 struct tcm_qla2xxx_lport *lport = 1669 (struct tcm_qla2xxx_lport *)target_lport_ptr; 1670 /* 1671 * Setup tgt_ops, local pointer to vha and target_lport_ptr 1672 */ 1673 ha->tgt.tgt_ops = &tcm_qla2xxx_template; 1674 vha->vha_tgt.target_lport_ptr = target_lport_ptr; 1675 lport->qla_vha = vha; 1676 1677 return 0; 1678 } 1679 1680 static struct se_wwn *tcm_qla2xxx_make_lport( 1681 struct target_fabric_configfs *tf, 1682 struct config_group *group, 1683 const char *name) 1684 { 1685 struct tcm_qla2xxx_lport *lport; 1686 u64 wwpn; 1687 int ret = -ENODEV; 1688 1689 if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0) 1690 return ERR_PTR(-EINVAL); 1691 1692 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL); 1693 if (!lport) { 1694 pr_err("Unable to allocate struct tcm_qla2xxx_lport\n"); 1695 return ERR_PTR(-ENOMEM); 1696 } 1697 lport->lport_wwpn = wwpn; 1698 tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN, 1699 wwpn); 1700 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) wwpn); 1701 1702 ret = tcm_qla2xxx_init_lport(lport); 1703 if (ret != 0) 1704 goto out; 1705 1706 ret = qlt_lport_register(lport, wwpn, 0, 0, 1707 tcm_qla2xxx_lport_register_cb); 1708 if (ret != 0) 1709 goto out_lport; 1710 1711 return &lport->lport_wwn; 1712 out_lport: 1713 vfree(lport->lport_loopid_map); 1714 btree_destroy32(&lport->lport_fcport_map); 1715 out: 1716 kfree(lport); 1717 return ERR_PTR(ret); 1718 } 1719 1720 static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn) 1721 { 1722 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1723 struct tcm_qla2xxx_lport, lport_wwn); 1724 struct scsi_qla_host *vha = lport->qla_vha; 1725 struct se_node_acl *node; 1726 u32 key = 0; 1727 1728 /* 1729 * Call into qla2x_target.c LLD logic to complete the 1730 * shutdown of struct qla_tgt after the call to 1731 * qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above.. 1732 */ 1733 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stopped) 1734 qlt_stop_phase2(vha->vha_tgt.qla_tgt); 1735 1736 qlt_lport_deregister(vha); 1737 1738 vfree(lport->lport_loopid_map); 1739 btree_for_each_safe32(&lport->lport_fcport_map, key, node) 1740 btree_remove32(&lport->lport_fcport_map, key); 1741 btree_destroy32(&lport->lport_fcport_map); 1742 kfree(lport); 1743 } 1744 1745 static int tcm_qla2xxx_lport_register_npiv_cb(struct scsi_qla_host *base_vha, 1746 void *target_lport_ptr, 1747 u64 npiv_wwpn, u64 npiv_wwnn) 1748 { 1749 struct fc_vport *vport; 1750 struct Scsi_Host *sh = base_vha->host; 1751 struct scsi_qla_host *npiv_vha; 1752 struct tcm_qla2xxx_lport *lport = 1753 (struct tcm_qla2xxx_lport *)target_lport_ptr; 1754 struct tcm_qla2xxx_lport *base_lport = 1755 (struct tcm_qla2xxx_lport *)base_vha->vha_tgt.target_lport_ptr; 1756 struct fc_vport_identifiers vport_id; 1757 1758 if (qla_ini_mode_enabled(base_vha)) { 1759 pr_err("qla2xxx base_vha not enabled for target mode\n"); 1760 return -EPERM; 1761 } 1762 1763 if (!base_lport || !base_lport->tpg_1 || 1764 !atomic_read(&base_lport->tpg_1->lport_tpg_enabled)) { 1765 pr_err("qla2xxx base_lport or tpg_1 not available\n"); 1766 return -EPERM; 1767 } 1768 1769 memset(&vport_id, 0, sizeof(vport_id)); 1770 vport_id.port_name = npiv_wwpn; 1771 vport_id.node_name = npiv_wwnn; 1772 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR; 1773 vport_id.vport_type = FC_PORTTYPE_NPIV; 1774 vport_id.disable = false; 1775 1776 vport = fc_vport_create(sh, 0, &vport_id); 1777 if (!vport) { 1778 pr_err("fc_vport_create failed for qla2xxx_npiv\n"); 1779 return -ENODEV; 1780 } 1781 /* 1782 * Setup local pointer to NPIV vhba + target_lport_ptr 1783 */ 1784 npiv_vha = (struct scsi_qla_host *)vport->dd_data; 1785 npiv_vha->vha_tgt.target_lport_ptr = target_lport_ptr; 1786 lport->qla_vha = npiv_vha; 1787 scsi_host_get(npiv_vha->host); 1788 return 0; 1789 } 1790 1791 1792 static struct se_wwn *tcm_qla2xxx_npiv_make_lport( 1793 struct target_fabric_configfs *tf, 1794 struct config_group *group, 1795 const char *name) 1796 { 1797 struct tcm_qla2xxx_lport *lport; 1798 u64 phys_wwpn, npiv_wwpn, npiv_wwnn; 1799 char *p, tmp[128]; 1800 int ret; 1801 1802 snprintf(tmp, 128, "%s", name); 1803 1804 p = strchr(tmp, '@'); 1805 if (!p) { 1806 pr_err("Unable to locate NPIV '@' separator\n"); 1807 return ERR_PTR(-EINVAL); 1808 } 1809 *p++ = '\0'; 1810 1811 if (tcm_qla2xxx_parse_wwn(tmp, &phys_wwpn, 1) < 0) 1812 return ERR_PTR(-EINVAL); 1813 1814 if (tcm_qla2xxx_npiv_parse_wwn(p, strlen(p)+1, 1815 &npiv_wwpn, &npiv_wwnn) < 0) 1816 return ERR_PTR(-EINVAL); 1817 1818 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL); 1819 if (!lport) { 1820 pr_err("Unable to allocate struct tcm_qla2xxx_lport for NPIV\n"); 1821 return ERR_PTR(-ENOMEM); 1822 } 1823 lport->lport_npiv_wwpn = npiv_wwpn; 1824 lport->lport_npiv_wwnn = npiv_wwnn; 1825 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) npiv_wwpn); 1826 1827 ret = tcm_qla2xxx_init_lport(lport); 1828 if (ret != 0) 1829 goto out; 1830 1831 ret = qlt_lport_register(lport, phys_wwpn, npiv_wwpn, npiv_wwnn, 1832 tcm_qla2xxx_lport_register_npiv_cb); 1833 if (ret != 0) 1834 goto out_lport; 1835 1836 return &lport->lport_wwn; 1837 out_lport: 1838 vfree(lport->lport_loopid_map); 1839 btree_destroy32(&lport->lport_fcport_map); 1840 out: 1841 kfree(lport); 1842 return ERR_PTR(ret); 1843 } 1844 1845 static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn) 1846 { 1847 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1848 struct tcm_qla2xxx_lport, lport_wwn); 1849 struct scsi_qla_host *npiv_vha = lport->qla_vha; 1850 struct qla_hw_data *ha = npiv_vha->hw; 1851 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 1852 1853 scsi_host_put(npiv_vha->host); 1854 /* 1855 * Notify libfc that we want to release the vha->fc_vport 1856 */ 1857 fc_vport_terminate(npiv_vha->fc_vport); 1858 scsi_host_put(base_vha->host); 1859 kfree(lport); 1860 } 1861 1862 1863 static ssize_t tcm_qla2xxx_wwn_version_show(struct config_item *item, 1864 char *page) 1865 { 1866 return sprintf(page, 1867 "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s on %s\n", 1868 QLA2XXX_VERSION, utsname()->sysname, 1869 utsname()->machine, utsname()->release); 1870 } 1871 1872 CONFIGFS_ATTR_RO(tcm_qla2xxx_wwn_, version); 1873 1874 static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = { 1875 &tcm_qla2xxx_wwn_attr_version, 1876 NULL, 1877 }; 1878 1879 static const struct target_core_fabric_ops tcm_qla2xxx_ops = { 1880 .module = THIS_MODULE, 1881 .fabric_name = "qla2xxx", 1882 .node_acl_size = sizeof(struct tcm_qla2xxx_nacl), 1883 /* 1884 * XXX: Limit assumes single page per scatter-gather-list entry. 1885 * Current maximum is ~4.9 MB per se_cmd->t_data_sg with PAGE_SIZE=4096 1886 */ 1887 .max_data_sg_nents = 1200, 1888 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn, 1889 .tpg_get_tag = tcm_qla2xxx_get_tag, 1890 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode, 1891 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache, 1892 .tpg_check_demo_mode_write_protect = 1893 tcm_qla2xxx_check_demo_write_protect, 1894 .tpg_check_prod_mode_write_protect = 1895 tcm_qla2xxx_check_prod_write_protect, 1896 .tpg_check_prot_fabric_only = tcm_qla2xxx_check_prot_fabric_only, 1897 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only, 1898 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index, 1899 .check_stop_free = tcm_qla2xxx_check_stop_free, 1900 .release_cmd = tcm_qla2xxx_release_cmd, 1901 .close_session = tcm_qla2xxx_close_session, 1902 .sess_get_index = tcm_qla2xxx_sess_get_index, 1903 .sess_get_initiator_sid = NULL, 1904 .write_pending = tcm_qla2xxx_write_pending, 1905 .write_pending_status = tcm_qla2xxx_write_pending_status, 1906 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs, 1907 .get_cmd_state = tcm_qla2xxx_get_cmd_state, 1908 .queue_data_in = tcm_qla2xxx_queue_data_in, 1909 .queue_status = tcm_qla2xxx_queue_status, 1910 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp, 1911 .aborted_task = tcm_qla2xxx_aborted_task, 1912 /* 1913 * Setup function pointers for generic logic in 1914 * target_core_fabric_configfs.c 1915 */ 1916 .fabric_make_wwn = tcm_qla2xxx_make_lport, 1917 .fabric_drop_wwn = tcm_qla2xxx_drop_lport, 1918 .fabric_make_tpg = tcm_qla2xxx_make_tpg, 1919 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg, 1920 .fabric_init_nodeacl = tcm_qla2xxx_init_nodeacl, 1921 1922 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs, 1923 .tfc_tpg_base_attrs = tcm_qla2xxx_tpg_attrs, 1924 .tfc_tpg_attrib_attrs = tcm_qla2xxx_tpg_attrib_attrs, 1925 }; 1926 1927 static const struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = { 1928 .module = THIS_MODULE, 1929 .fabric_name = "qla2xxx_npiv", 1930 .node_acl_size = sizeof(struct tcm_qla2xxx_nacl), 1931 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn, 1932 .tpg_get_tag = tcm_qla2xxx_get_tag, 1933 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode, 1934 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache, 1935 .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_demo_mode, 1936 .tpg_check_prod_mode_write_protect = 1937 tcm_qla2xxx_check_prod_write_protect, 1938 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only, 1939 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index, 1940 .check_stop_free = tcm_qla2xxx_check_stop_free, 1941 .release_cmd = tcm_qla2xxx_release_cmd, 1942 .close_session = tcm_qla2xxx_close_session, 1943 .sess_get_index = tcm_qla2xxx_sess_get_index, 1944 .sess_get_initiator_sid = NULL, 1945 .write_pending = tcm_qla2xxx_write_pending, 1946 .write_pending_status = tcm_qla2xxx_write_pending_status, 1947 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs, 1948 .get_cmd_state = tcm_qla2xxx_get_cmd_state, 1949 .queue_data_in = tcm_qla2xxx_queue_data_in, 1950 .queue_status = tcm_qla2xxx_queue_status, 1951 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp, 1952 .aborted_task = tcm_qla2xxx_aborted_task, 1953 /* 1954 * Setup function pointers for generic logic in 1955 * target_core_fabric_configfs.c 1956 */ 1957 .fabric_make_wwn = tcm_qla2xxx_npiv_make_lport, 1958 .fabric_drop_wwn = tcm_qla2xxx_npiv_drop_lport, 1959 .fabric_make_tpg = tcm_qla2xxx_npiv_make_tpg, 1960 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg, 1961 .fabric_init_nodeacl = tcm_qla2xxx_init_nodeacl, 1962 1963 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs, 1964 .tfc_tpg_base_attrs = tcm_qla2xxx_npiv_tpg_attrs, 1965 }; 1966 1967 static int tcm_qla2xxx_register_configfs(void) 1968 { 1969 int ret; 1970 1971 pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on %s\n", 1972 QLA2XXX_VERSION, utsname()->sysname, 1973 utsname()->machine, utsname()->release); 1974 1975 ret = target_register_template(&tcm_qla2xxx_ops); 1976 if (ret) 1977 return ret; 1978 1979 ret = target_register_template(&tcm_qla2xxx_npiv_ops); 1980 if (ret) 1981 goto out_fabric; 1982 1983 tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free", 1984 WQ_MEM_RECLAIM, 0); 1985 if (!tcm_qla2xxx_free_wq) { 1986 ret = -ENOMEM; 1987 goto out_fabric_npiv; 1988 } 1989 1990 return 0; 1991 1992 out_fabric_npiv: 1993 target_unregister_template(&tcm_qla2xxx_npiv_ops); 1994 out_fabric: 1995 target_unregister_template(&tcm_qla2xxx_ops); 1996 return ret; 1997 } 1998 1999 static void tcm_qla2xxx_deregister_configfs(void) 2000 { 2001 destroy_workqueue(tcm_qla2xxx_free_wq); 2002 2003 target_unregister_template(&tcm_qla2xxx_ops); 2004 target_unregister_template(&tcm_qla2xxx_npiv_ops); 2005 } 2006 2007 static int __init tcm_qla2xxx_init(void) 2008 { 2009 int ret; 2010 2011 ret = tcm_qla2xxx_register_configfs(); 2012 if (ret < 0) 2013 return ret; 2014 2015 return 0; 2016 } 2017 2018 static void __exit tcm_qla2xxx_exit(void) 2019 { 2020 tcm_qla2xxx_deregister_configfs(); 2021 } 2022 2023 MODULE_DESCRIPTION("TCM QLA24XX+ series NPIV enabled fabric driver"); 2024 MODULE_LICENSE("GPL"); 2025 module_init(tcm_qla2xxx_init); 2026 module_exit(tcm_qla2xxx_exit); 2027