1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /******************************************************************************* 3 * This file contains tcm implementation using v4 configfs fabric infrastructure 4 * for QLogic target mode HBAs 5 * 6 * (c) Copyright 2010-2013 Datera, Inc. 7 * 8 * Author: Nicholas A. Bellinger <nab@daterainc.com> 9 * 10 * tcm_qla2xxx_parse_wwn() and tcm_qla2xxx_format_wwn() contains code from 11 * the TCM_FC / Open-FCoE.org fabric module. 12 * 13 * Copyright (c) 2010 Cisco Systems, Inc 14 * 15 ****************************************************************************/ 16 17 18 #include <linux/module.h> 19 #include <linux/utsname.h> 20 #include <linux/vmalloc.h> 21 #include <linux/list.h> 22 #include <linux/slab.h> 23 #include <linux/types.h> 24 #include <linux/string.h> 25 #include <linux/configfs.h> 26 #include <linux/ctype.h> 27 #include <asm/unaligned.h> 28 #include <scsi/scsi_host.h> 29 #include <target/target_core_base.h> 30 #include <target/target_core_fabric.h> 31 32 #include "qla_def.h" 33 #include "qla_target.h" 34 #include "tcm_qla2xxx.h" 35 36 static struct workqueue_struct *tcm_qla2xxx_free_wq; 37 38 /* 39 * Parse WWN. 40 * If strict, we require lower-case hex and colon separators to be sure 41 * the name is the same as what would be generated by ft_format_wwn() 42 * so the name and wwn are mapped one-to-one. 43 */ 44 static ssize_t tcm_qla2xxx_parse_wwn(const char *name, u64 *wwn, int strict) 45 { 46 const char *cp; 47 char c; 48 u32 nibble; 49 u32 byte = 0; 50 u32 pos = 0; 51 u32 err; 52 53 *wwn = 0; 54 for (cp = name; cp < &name[TCM_QLA2XXX_NAMELEN - 1]; cp++) { 55 c = *cp; 56 if (c == '\n' && cp[1] == '\0') 57 continue; 58 if (strict && pos++ == 2 && byte++ < 7) { 59 pos = 0; 60 if (c == ':') 61 continue; 62 err = 1; 63 goto fail; 64 } 65 if (c == '\0') { 66 err = 2; 67 if (strict && byte != 8) 68 goto fail; 69 return cp - name; 70 } 71 err = 3; 72 if (isdigit(c)) 73 nibble = c - '0'; 74 else if (isxdigit(c) && (islower(c) || !strict)) 75 nibble = tolower(c) - 'a' + 10; 76 else 77 goto fail; 78 *wwn = (*wwn << 4) | nibble; 79 } 80 err = 4; 81 fail: 82 pr_debug("err %u len %zu pos %u byte %u\n", 83 err, cp - name, pos, byte); 84 return -1; 85 } 86 87 static ssize_t tcm_qla2xxx_format_wwn(char *buf, size_t len, u64 wwn) 88 { 89 u8 b[8]; 90 91 put_unaligned_be64(wwn, b); 92 return snprintf(buf, len, 93 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x", 94 b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7]); 95 } 96 97 /* 98 * From drivers/scsi/scsi_transport_fc.c:fc_parse_wwn 99 */ 100 static int tcm_qla2xxx_npiv_extract_wwn(const char *ns, u64 *nm) 101 { 102 unsigned int i, j; 103 u8 wwn[8]; 104 105 memset(wwn, 0, sizeof(wwn)); 106 107 /* Validate and store the new name */ 108 for (i = 0, j = 0; i < 16; i++) { 109 int value; 110 111 value = hex_to_bin(*ns++); 112 if (value >= 0) 113 j = (j << 4) | value; 114 else 115 return -EINVAL; 116 117 if (i % 2) { 118 wwn[i/2] = j & 0xff; 119 j = 0; 120 } 121 } 122 123 *nm = wwn_to_u64(wwn); 124 return 0; 125 } 126 127 /* 128 * This parsing logic follows drivers/scsi/scsi_transport_fc.c: 129 * store_fc_host_vport_create() 130 */ 131 static int tcm_qla2xxx_npiv_parse_wwn( 132 const char *name, 133 size_t count, 134 u64 *wwpn, 135 u64 *wwnn) 136 { 137 unsigned int cnt = count; 138 int rc; 139 140 *wwpn = 0; 141 *wwnn = 0; 142 143 /* count may include a LF at end of string */ 144 if (name[cnt-1] == '\n' || name[cnt-1] == 0) 145 cnt--; 146 147 /* validate we have enough characters for WWPN */ 148 if ((cnt != (16+1+16)) || (name[16] != ':')) 149 return -EINVAL; 150 151 rc = tcm_qla2xxx_npiv_extract_wwn(&name[0], wwpn); 152 if (rc != 0) 153 return rc; 154 155 rc = tcm_qla2xxx_npiv_extract_wwn(&name[17], wwnn); 156 if (rc != 0) 157 return rc; 158 159 return 0; 160 } 161 162 static char *tcm_qla2xxx_get_fabric_wwn(struct se_portal_group *se_tpg) 163 { 164 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 165 struct tcm_qla2xxx_tpg, se_tpg); 166 struct tcm_qla2xxx_lport *lport = tpg->lport; 167 168 return lport->lport_naa_name; 169 } 170 171 static u16 tcm_qla2xxx_get_tag(struct se_portal_group *se_tpg) 172 { 173 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 174 struct tcm_qla2xxx_tpg, se_tpg); 175 return tpg->lport_tpgt; 176 } 177 178 static int tcm_qla2xxx_check_demo_mode(struct se_portal_group *se_tpg) 179 { 180 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 181 struct tcm_qla2xxx_tpg, se_tpg); 182 183 return tpg->tpg_attrib.generate_node_acls; 184 } 185 186 static int tcm_qla2xxx_check_demo_mode_cache(struct se_portal_group *se_tpg) 187 { 188 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 189 struct tcm_qla2xxx_tpg, se_tpg); 190 191 return tpg->tpg_attrib.cache_dynamic_acls; 192 } 193 194 static int tcm_qla2xxx_check_demo_write_protect(struct se_portal_group *se_tpg) 195 { 196 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 197 struct tcm_qla2xxx_tpg, se_tpg); 198 199 return tpg->tpg_attrib.demo_mode_write_protect; 200 } 201 202 static int tcm_qla2xxx_check_prod_write_protect(struct se_portal_group *se_tpg) 203 { 204 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 205 struct tcm_qla2xxx_tpg, se_tpg); 206 207 return tpg->tpg_attrib.prod_mode_write_protect; 208 } 209 210 static int tcm_qla2xxx_check_demo_mode_login_only(struct se_portal_group *se_tpg) 211 { 212 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 213 struct tcm_qla2xxx_tpg, se_tpg); 214 215 return tpg->tpg_attrib.demo_mode_login_only; 216 } 217 218 static int tcm_qla2xxx_check_prot_fabric_only(struct se_portal_group *se_tpg) 219 { 220 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 221 struct tcm_qla2xxx_tpg, se_tpg); 222 223 return tpg->tpg_attrib.fabric_prot_type; 224 } 225 226 static u32 tcm_qla2xxx_tpg_get_inst_index(struct se_portal_group *se_tpg) 227 { 228 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 229 struct tcm_qla2xxx_tpg, se_tpg); 230 231 return tpg->lport_tpgt; 232 } 233 234 static void tcm_qla2xxx_complete_mcmd(struct work_struct *work) 235 { 236 struct qla_tgt_mgmt_cmd *mcmd = container_of(work, 237 struct qla_tgt_mgmt_cmd, free_work); 238 239 transport_generic_free_cmd(&mcmd->se_cmd, 0); 240 } 241 242 /* 243 * Called from qla_target_template->free_mcmd(), and will call 244 * tcm_qla2xxx_release_cmd() via normal struct target_core_fabric_ops 245 * release callback. qla_hw_data->hardware_lock is expected to be held 246 */ 247 static void tcm_qla2xxx_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd) 248 { 249 INIT_WORK(&mcmd->free_work, tcm_qla2xxx_complete_mcmd); 250 queue_work(tcm_qla2xxx_free_wq, &mcmd->free_work); 251 } 252 253 static void tcm_qla2xxx_complete_free(struct work_struct *work) 254 { 255 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 256 257 cmd->cmd_in_wq = 0; 258 259 WARN_ON(cmd->trc_flags & TRC_CMD_FREE); 260 261 /* To do: protect all tgt_counters manipulations with proper locking. */ 262 cmd->qpair->tgt_counters.qla_core_ret_sta_ctio++; 263 cmd->trc_flags |= TRC_CMD_FREE; 264 cmd->cmd_sent_to_fw = 0; 265 266 transport_generic_free_cmd(&cmd->se_cmd, 0); 267 } 268 269 /* 270 * Called from qla_target_template->free_cmd(), and will call 271 * tcm_qla2xxx_release_cmd via normal struct target_core_fabric_ops 272 * release callback. qla_hw_data->hardware_lock is expected to be held 273 */ 274 static void tcm_qla2xxx_free_cmd(struct qla_tgt_cmd *cmd) 275 { 276 cmd->qpair->tgt_counters.core_qla_free_cmd++; 277 cmd->cmd_in_wq = 1; 278 279 WARN_ON(cmd->trc_flags & TRC_CMD_DONE); 280 cmd->trc_flags |= TRC_CMD_DONE; 281 282 INIT_WORK(&cmd->work, tcm_qla2xxx_complete_free); 283 queue_work_on(smp_processor_id(), tcm_qla2xxx_free_wq, &cmd->work); 284 } 285 286 /* 287 * Called from struct target_core_fabric_ops->check_stop_free() context 288 */ 289 static int tcm_qla2xxx_check_stop_free(struct se_cmd *se_cmd) 290 { 291 struct qla_tgt_cmd *cmd; 292 293 if ((se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) == 0) { 294 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd); 295 cmd->trc_flags |= TRC_CMD_CHK_STOP; 296 } 297 298 return target_put_sess_cmd(se_cmd); 299 } 300 301 /* tcm_qla2xxx_release_cmd - Callback from TCM Core to release underlying 302 * fabric descriptor @se_cmd command to release 303 */ 304 static void tcm_qla2xxx_release_cmd(struct se_cmd *se_cmd) 305 { 306 struct qla_tgt_cmd *cmd; 307 308 if (se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) { 309 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd, 310 struct qla_tgt_mgmt_cmd, se_cmd); 311 qlt_free_mcmd(mcmd); 312 return; 313 } 314 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd); 315 316 if (WARN_ON(cmd->cmd_sent_to_fw)) 317 return; 318 319 qlt_free_cmd(cmd); 320 } 321 322 static void tcm_qla2xxx_release_session(struct kref *kref) 323 { 324 struct fc_port *sess = container_of(kref, 325 struct fc_port, sess_kref); 326 327 qlt_unreg_sess(sess); 328 } 329 330 static void tcm_qla2xxx_put_sess(struct fc_port *sess) 331 { 332 if (!sess) 333 return; 334 335 kref_put(&sess->sess_kref, tcm_qla2xxx_release_session); 336 } 337 338 static void tcm_qla2xxx_close_session(struct se_session *se_sess) 339 { 340 struct fc_port *sess = se_sess->fabric_sess_ptr; 341 struct scsi_qla_host *vha; 342 unsigned long flags; 343 344 BUG_ON(!sess); 345 vha = sess->vha; 346 347 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 348 target_sess_cmd_list_set_waiting(se_sess); 349 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 350 351 tcm_qla2xxx_put_sess(sess); 352 } 353 354 static u32 tcm_qla2xxx_sess_get_index(struct se_session *se_sess) 355 { 356 return 0; 357 } 358 359 static int tcm_qla2xxx_write_pending(struct se_cmd *se_cmd) 360 { 361 struct qla_tgt_cmd *cmd = container_of(se_cmd, 362 struct qla_tgt_cmd, se_cmd); 363 364 if (cmd->aborted) { 365 /* Cmd can loop during Q-full. tcm_qla2xxx_aborted_task 366 * can get ahead of this cmd. tcm_qla2xxx_aborted_task 367 * already kick start the free. 368 */ 369 pr_debug("write_pending aborted cmd[%p] refcount %d " 370 "transport_state %x, t_state %x, se_cmd_flags %x\n", 371 cmd, kref_read(&cmd->se_cmd.cmd_kref), 372 cmd->se_cmd.transport_state, 373 cmd->se_cmd.t_state, 374 cmd->se_cmd.se_cmd_flags); 375 transport_generic_request_failure(&cmd->se_cmd, 376 TCM_CHECK_CONDITION_ABORT_CMD); 377 return 0; 378 } 379 cmd->trc_flags |= TRC_XFR_RDY; 380 cmd->bufflen = se_cmd->data_length; 381 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd); 382 383 cmd->sg_cnt = se_cmd->t_data_nents; 384 cmd->sg = se_cmd->t_data_sg; 385 386 cmd->prot_sg_cnt = se_cmd->t_prot_nents; 387 cmd->prot_sg = se_cmd->t_prot_sg; 388 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size; 389 se_cmd->pi_err = 0; 390 391 /* 392 * qla_target.c:qlt_rdy_to_xfer() will call dma_map_sg() to setup 393 * the SGL mappings into PCIe memory for incoming FCP WRITE data. 394 */ 395 return qlt_rdy_to_xfer(cmd); 396 } 397 398 static void tcm_qla2xxx_set_default_node_attrs(struct se_node_acl *nacl) 399 { 400 return; 401 } 402 403 static int tcm_qla2xxx_get_cmd_state(struct se_cmd *se_cmd) 404 { 405 if (!(se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB)) { 406 struct qla_tgt_cmd *cmd = container_of(se_cmd, 407 struct qla_tgt_cmd, se_cmd); 408 return cmd->state; 409 } 410 411 return 0; 412 } 413 414 /* 415 * Called from process context in qla_target.c:qlt_do_work() code 416 */ 417 static int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd, 418 unsigned char *cdb, uint32_t data_length, int fcp_task_attr, 419 int data_dir, int bidi) 420 { 421 struct se_cmd *se_cmd = &cmd->se_cmd; 422 struct se_session *se_sess; 423 struct fc_port *sess; 424 #ifdef CONFIG_TCM_QLA2XXX_DEBUG 425 struct se_portal_group *se_tpg; 426 struct tcm_qla2xxx_tpg *tpg; 427 #endif 428 int flags = TARGET_SCF_ACK_KREF; 429 430 if (bidi) 431 flags |= TARGET_SCF_BIDI_OP; 432 433 if (se_cmd->cpuid != WORK_CPU_UNBOUND) 434 flags |= TARGET_SCF_USE_CPUID; 435 436 sess = cmd->sess; 437 if (!sess) { 438 pr_err("Unable to locate struct fc_port from qla_tgt_cmd\n"); 439 return -EINVAL; 440 } 441 442 se_sess = sess->se_sess; 443 if (!se_sess) { 444 pr_err("Unable to locate active struct se_session\n"); 445 return -EINVAL; 446 } 447 448 #ifdef CONFIG_TCM_QLA2XXX_DEBUG 449 se_tpg = se_sess->se_tpg; 450 tpg = container_of(se_tpg, struct tcm_qla2xxx_tpg, se_tpg); 451 if (unlikely(tpg->tpg_attrib.jam_host)) { 452 /* return, and dont run target_submit_cmd,discarding command */ 453 return 0; 454 } 455 #endif 456 457 cmd->qpair->tgt_counters.qla_core_sbt_cmd++; 458 return target_submit_cmd(se_cmd, se_sess, cdb, &cmd->sense_buffer[0], 459 cmd->unpacked_lun, data_length, fcp_task_attr, 460 data_dir, flags); 461 } 462 463 static void tcm_qla2xxx_handle_data_work(struct work_struct *work) 464 { 465 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 466 467 /* 468 * Ensure that the complete FCP WRITE payload has been received. 469 * Otherwise return an exception via CHECK_CONDITION status. 470 */ 471 cmd->cmd_in_wq = 0; 472 cmd->cmd_sent_to_fw = 0; 473 if (cmd->aborted) { 474 transport_generic_request_failure(&cmd->se_cmd, 475 TCM_CHECK_CONDITION_ABORT_CMD); 476 return; 477 } 478 479 cmd->qpair->tgt_counters.qla_core_ret_ctio++; 480 if (!cmd->write_data_transferred) { 481 switch (cmd->dif_err_code) { 482 case DIF_ERR_GRD: 483 cmd->se_cmd.pi_err = 484 TCM_LOGICAL_BLOCK_GUARD_CHECK_FAILED; 485 break; 486 case DIF_ERR_REF: 487 cmd->se_cmd.pi_err = 488 TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED; 489 break; 490 case DIF_ERR_APP: 491 cmd->se_cmd.pi_err = 492 TCM_LOGICAL_BLOCK_APP_TAG_CHECK_FAILED; 493 break; 494 case DIF_ERR_NONE: 495 default: 496 break; 497 } 498 499 if (cmd->se_cmd.pi_err) 500 transport_generic_request_failure(&cmd->se_cmd, 501 cmd->se_cmd.pi_err); 502 else 503 transport_generic_request_failure(&cmd->se_cmd, 504 TCM_CHECK_CONDITION_ABORT_CMD); 505 506 return; 507 } 508 509 return target_execute_cmd(&cmd->se_cmd); 510 } 511 512 /* 513 * Called from qla_target.c:qlt_do_ctio_completion() 514 */ 515 static void tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd) 516 { 517 cmd->trc_flags |= TRC_DATA_IN; 518 cmd->cmd_in_wq = 1; 519 INIT_WORK(&cmd->work, tcm_qla2xxx_handle_data_work); 520 queue_work_on(smp_processor_id(), tcm_qla2xxx_free_wq, &cmd->work); 521 } 522 523 static int tcm_qla2xxx_chk_dif_tags(uint32_t tag) 524 { 525 return 0; 526 } 527 528 static int tcm_qla2xxx_dif_tags(struct qla_tgt_cmd *cmd, 529 uint16_t *pfw_prot_opts) 530 { 531 struct se_cmd *se_cmd = &cmd->se_cmd; 532 533 if (!(se_cmd->prot_checks & TARGET_DIF_CHECK_GUARD)) 534 *pfw_prot_opts |= PO_DISABLE_GUARD_CHECK; 535 536 if (!(se_cmd->prot_checks & TARGET_DIF_CHECK_APPTAG)) 537 *pfw_prot_opts |= PO_DIS_APP_TAG_VALD; 538 539 return 0; 540 } 541 542 /* 543 * Called from qla_target.c:qlt_issue_task_mgmt() 544 */ 545 static int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *mcmd, u64 lun, 546 uint16_t tmr_func, uint32_t tag) 547 { 548 struct fc_port *sess = mcmd->sess; 549 struct se_cmd *se_cmd = &mcmd->se_cmd; 550 int transl_tmr_func = 0; 551 int flags = TARGET_SCF_ACK_KREF; 552 553 switch (tmr_func) { 554 case QLA_TGT_ABTS: 555 pr_debug("%ld: ABTS received\n", sess->vha->host_no); 556 transl_tmr_func = TMR_ABORT_TASK; 557 flags |= TARGET_SCF_LOOKUP_LUN_FROM_TAG; 558 break; 559 case QLA_TGT_2G_ABORT_TASK: 560 pr_debug("%ld: 2G Abort Task received\n", sess->vha->host_no); 561 transl_tmr_func = TMR_ABORT_TASK; 562 break; 563 case QLA_TGT_CLEAR_ACA: 564 pr_debug("%ld: CLEAR_ACA received\n", sess->vha->host_no); 565 transl_tmr_func = TMR_CLEAR_ACA; 566 break; 567 case QLA_TGT_TARGET_RESET: 568 pr_debug("%ld: TARGET_RESET received\n", sess->vha->host_no); 569 transl_tmr_func = TMR_TARGET_WARM_RESET; 570 break; 571 case QLA_TGT_LUN_RESET: 572 pr_debug("%ld: LUN_RESET received\n", sess->vha->host_no); 573 transl_tmr_func = TMR_LUN_RESET; 574 break; 575 case QLA_TGT_CLEAR_TS: 576 pr_debug("%ld: CLEAR_TS received\n", sess->vha->host_no); 577 transl_tmr_func = TMR_CLEAR_TASK_SET; 578 break; 579 case QLA_TGT_ABORT_TS: 580 pr_debug("%ld: ABORT_TS received\n", sess->vha->host_no); 581 transl_tmr_func = TMR_ABORT_TASK_SET; 582 break; 583 default: 584 pr_debug("%ld: Unknown task mgmt fn 0x%x\n", 585 sess->vha->host_no, tmr_func); 586 return -ENOSYS; 587 } 588 589 return target_submit_tmr(se_cmd, sess->se_sess, NULL, lun, mcmd, 590 transl_tmr_func, GFP_ATOMIC, tag, flags); 591 } 592 593 static struct qla_tgt_cmd *tcm_qla2xxx_find_cmd_by_tag(struct fc_port *sess, 594 uint64_t tag) 595 { 596 struct qla_tgt_cmd *cmd = NULL; 597 struct se_cmd *secmd; 598 unsigned long flags; 599 600 if (!sess->se_sess) 601 return NULL; 602 603 spin_lock_irqsave(&sess->se_sess->sess_cmd_lock, flags); 604 list_for_each_entry(secmd, &sess->se_sess->sess_cmd_list, se_cmd_list) { 605 /* skip task management functions, including tmr->task_cmd */ 606 if (secmd->se_cmd_flags & SCF_SCSI_TMR_CDB) 607 continue; 608 609 if (secmd->tag == tag) { 610 cmd = container_of(secmd, struct qla_tgt_cmd, se_cmd); 611 break; 612 } 613 } 614 spin_unlock_irqrestore(&sess->se_sess->sess_cmd_lock, flags); 615 616 return cmd; 617 } 618 619 static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd) 620 { 621 struct qla_tgt_cmd *cmd = container_of(se_cmd, 622 struct qla_tgt_cmd, se_cmd); 623 struct scsi_qla_host *vha = cmd->vha; 624 625 if (cmd->aborted) { 626 /* Cmd can loop during Q-full. tcm_qla2xxx_aborted_task 627 * can get ahead of this cmd. tcm_qla2xxx_aborted_task 628 * already kick start the free. 629 */ 630 pr_debug("queue_data_in aborted cmd[%p] refcount %d " 631 "transport_state %x, t_state %x, se_cmd_flags %x\n", 632 cmd, kref_read(&cmd->se_cmd.cmd_kref), 633 cmd->se_cmd.transport_state, 634 cmd->se_cmd.t_state, 635 cmd->se_cmd.se_cmd_flags); 636 vha->hw->tgt.tgt_ops->free_cmd(cmd); 637 return 0; 638 } 639 640 cmd->trc_flags |= TRC_XMIT_DATA; 641 cmd->bufflen = se_cmd->data_length; 642 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd); 643 644 cmd->sg_cnt = se_cmd->t_data_nents; 645 cmd->sg = se_cmd->t_data_sg; 646 cmd->offset = 0; 647 648 cmd->prot_sg_cnt = se_cmd->t_prot_nents; 649 cmd->prot_sg = se_cmd->t_prot_sg; 650 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size; 651 se_cmd->pi_err = 0; 652 653 /* 654 * Now queue completed DATA_IN the qla2xxx LLD and response ring 655 */ 656 return qlt_xmit_response(cmd, QLA_TGT_XMIT_DATA|QLA_TGT_XMIT_STATUS, 657 se_cmd->scsi_status); 658 } 659 660 static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd) 661 { 662 struct qla_tgt_cmd *cmd = container_of(se_cmd, 663 struct qla_tgt_cmd, se_cmd); 664 struct scsi_qla_host *vha = cmd->vha; 665 int xmit_type = QLA_TGT_XMIT_STATUS; 666 667 if (cmd->aborted) { 668 /* 669 * Cmd can loop during Q-full. tcm_qla2xxx_aborted_task 670 * can get ahead of this cmd. tcm_qla2xxx_aborted_task 671 * already kick start the free. 672 */ 673 pr_debug( 674 "queue_data_in aborted cmd[%p] refcount %d transport_state %x, t_state %x, se_cmd_flags %x\n", 675 cmd, kref_read(&cmd->se_cmd.cmd_kref), 676 cmd->se_cmd.transport_state, cmd->se_cmd.t_state, 677 cmd->se_cmd.se_cmd_flags); 678 vha->hw->tgt.tgt_ops->free_cmd(cmd); 679 return 0; 680 } 681 cmd->bufflen = se_cmd->data_length; 682 cmd->sg = NULL; 683 cmd->sg_cnt = 0; 684 cmd->offset = 0; 685 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd); 686 cmd->trc_flags |= TRC_XMIT_STATUS; 687 688 if (se_cmd->data_direction == DMA_FROM_DEVICE) { 689 /* 690 * For FCP_READ with CHECK_CONDITION status, clear cmd->bufflen 691 * for qla_tgt_xmit_response LLD code 692 */ 693 if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) { 694 se_cmd->se_cmd_flags &= ~SCF_OVERFLOW_BIT; 695 se_cmd->residual_count = 0; 696 } 697 se_cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT; 698 se_cmd->residual_count += se_cmd->data_length; 699 700 cmd->bufflen = 0; 701 } 702 /* 703 * Now queue status response to qla2xxx LLD code and response ring 704 */ 705 return qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status); 706 } 707 708 static void tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd) 709 { 710 struct se_tmr_req *se_tmr = se_cmd->se_tmr_req; 711 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd, 712 struct qla_tgt_mgmt_cmd, se_cmd); 713 714 pr_debug("queue_tm_rsp: mcmd: %p func: 0x%02x response: 0x%02x\n", 715 mcmd, se_tmr->function, se_tmr->response); 716 /* 717 * Do translation between TCM TM response codes and 718 * QLA2xxx FC TM response codes. 719 */ 720 switch (se_tmr->response) { 721 case TMR_FUNCTION_COMPLETE: 722 mcmd->fc_tm_rsp = FC_TM_SUCCESS; 723 break; 724 case TMR_TASK_DOES_NOT_EXIST: 725 mcmd->fc_tm_rsp = FC_TM_BAD_CMD; 726 break; 727 case TMR_FUNCTION_REJECTED: 728 mcmd->fc_tm_rsp = FC_TM_REJECT; 729 break; 730 case TMR_LUN_DOES_NOT_EXIST: 731 default: 732 mcmd->fc_tm_rsp = FC_TM_FAILED; 733 break; 734 } 735 /* 736 * Queue the TM response to QLA2xxx LLD to build a 737 * CTIO response packet. 738 */ 739 qlt_xmit_tm_rsp(mcmd); 740 } 741 742 static void tcm_qla2xxx_aborted_task(struct se_cmd *se_cmd) 743 { 744 struct qla_tgt_cmd *cmd = container_of(se_cmd, 745 struct qla_tgt_cmd, se_cmd); 746 747 if (qlt_abort_cmd(cmd)) 748 return; 749 } 750 751 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *, 752 struct tcm_qla2xxx_nacl *, struct fc_port *); 753 /* 754 * Expected to be called with struct qla_hw_data->tgt.sess_lock held 755 */ 756 static void tcm_qla2xxx_clear_nacl_from_fcport_map(struct fc_port *sess) 757 { 758 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl; 759 struct se_portal_group *se_tpg = se_nacl->se_tpg; 760 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn; 761 struct tcm_qla2xxx_lport *lport = container_of(se_wwn, 762 struct tcm_qla2xxx_lport, lport_wwn); 763 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl, 764 struct tcm_qla2xxx_nacl, se_node_acl); 765 void *node; 766 767 pr_debug("fc_rport domain: port_id 0x%06x\n", nacl->nport_id); 768 769 node = btree_remove32(&lport->lport_fcport_map, nacl->nport_id); 770 if (WARN_ON(node && (node != se_nacl))) { 771 /* 772 * The nacl no longer matches what we think it should be. 773 * Most likely a new dynamic acl has been added while 774 * someone dropped the hardware lock. It clearly is a 775 * bug elsewhere, but this bit can't make things worse. 776 */ 777 btree_insert32(&lport->lport_fcport_map, nacl->nport_id, 778 node, GFP_ATOMIC); 779 } 780 781 pr_debug("Removed from fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%06x\n", 782 se_nacl, nacl->nport_wwnn, nacl->nport_id); 783 /* 784 * Now clear the se_nacl and session pointers from our HW lport lookup 785 * table mapping for this initiator's fabric S_ID and LOOP_ID entries. 786 * 787 * This is done ahead of callbacks into tcm_qla2xxx_free_session() -> 788 * target_wait_for_sess_cmds() before the session waits for outstanding 789 * I/O to complete, to avoid a race between session shutdown execution 790 * and incoming ATIOs or TMRs picking up a stale se_node_act reference. 791 */ 792 tcm_qla2xxx_clear_sess_lookup(lport, nacl, sess); 793 } 794 795 static void tcm_qla2xxx_shutdown_sess(struct fc_port *sess) 796 { 797 target_sess_cmd_list_set_waiting(sess->se_sess); 798 } 799 800 static int tcm_qla2xxx_init_nodeacl(struct se_node_acl *se_nacl, 801 const char *name) 802 { 803 struct tcm_qla2xxx_nacl *nacl = 804 container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 805 u64 wwnn; 806 807 if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0) 808 return -EINVAL; 809 810 nacl->nport_wwnn = wwnn; 811 tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn); 812 813 return 0; 814 } 815 816 /* Start items for tcm_qla2xxx_tpg_attrib_cit */ 817 818 #define DEF_QLA_TPG_ATTRIB(name) \ 819 \ 820 static ssize_t tcm_qla2xxx_tpg_attrib_##name##_show( \ 821 struct config_item *item, char *page) \ 822 { \ 823 struct se_portal_group *se_tpg = attrib_to_tpg(item); \ 824 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \ 825 struct tcm_qla2xxx_tpg, se_tpg); \ 826 \ 827 return sprintf(page, "%u\n", tpg->tpg_attrib.name); \ 828 } \ 829 \ 830 static ssize_t tcm_qla2xxx_tpg_attrib_##name##_store( \ 831 struct config_item *item, const char *page, size_t count) \ 832 { \ 833 struct se_portal_group *se_tpg = attrib_to_tpg(item); \ 834 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \ 835 struct tcm_qla2xxx_tpg, se_tpg); \ 836 struct tcm_qla2xxx_tpg_attrib *a = &tpg->tpg_attrib; \ 837 unsigned long val; \ 838 int ret; \ 839 \ 840 ret = kstrtoul(page, 0, &val); \ 841 if (ret < 0) { \ 842 pr_err("kstrtoul() failed with" \ 843 " ret: %d\n", ret); \ 844 return -EINVAL; \ 845 } \ 846 \ 847 if ((val != 0) && (val != 1)) { \ 848 pr_err("Illegal boolean value %lu\n", val); \ 849 return -EINVAL; \ 850 } \ 851 \ 852 a->name = val; \ 853 \ 854 return count; \ 855 } \ 856 CONFIGFS_ATTR(tcm_qla2xxx_tpg_attrib_, name) 857 858 DEF_QLA_TPG_ATTRIB(generate_node_acls); 859 DEF_QLA_TPG_ATTRIB(cache_dynamic_acls); 860 DEF_QLA_TPG_ATTRIB(demo_mode_write_protect); 861 DEF_QLA_TPG_ATTRIB(prod_mode_write_protect); 862 DEF_QLA_TPG_ATTRIB(demo_mode_login_only); 863 #ifdef CONFIG_TCM_QLA2XXX_DEBUG 864 DEF_QLA_TPG_ATTRIB(jam_host); 865 #endif 866 867 static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = { 868 &tcm_qla2xxx_tpg_attrib_attr_generate_node_acls, 869 &tcm_qla2xxx_tpg_attrib_attr_cache_dynamic_acls, 870 &tcm_qla2xxx_tpg_attrib_attr_demo_mode_write_protect, 871 &tcm_qla2xxx_tpg_attrib_attr_prod_mode_write_protect, 872 &tcm_qla2xxx_tpg_attrib_attr_demo_mode_login_only, 873 #ifdef CONFIG_TCM_QLA2XXX_DEBUG 874 &tcm_qla2xxx_tpg_attrib_attr_jam_host, 875 #endif 876 NULL, 877 }; 878 879 /* End items for tcm_qla2xxx_tpg_attrib_cit */ 880 881 static ssize_t tcm_qla2xxx_tpg_enable_show(struct config_item *item, 882 char *page) 883 { 884 struct se_portal_group *se_tpg = to_tpg(item); 885 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 886 struct tcm_qla2xxx_tpg, se_tpg); 887 888 return snprintf(page, PAGE_SIZE, "%d\n", 889 atomic_read(&tpg->lport_tpg_enabled)); 890 } 891 892 static ssize_t tcm_qla2xxx_tpg_enable_store(struct config_item *item, 893 const char *page, size_t count) 894 { 895 struct se_portal_group *se_tpg = to_tpg(item); 896 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn; 897 struct tcm_qla2xxx_lport *lport = container_of(se_wwn, 898 struct tcm_qla2xxx_lport, lport_wwn); 899 struct scsi_qla_host *vha = lport->qla_vha; 900 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 901 struct tcm_qla2xxx_tpg, se_tpg); 902 unsigned long op; 903 int rc; 904 905 rc = kstrtoul(page, 0, &op); 906 if (rc < 0) { 907 pr_err("kstrtoul() returned %d\n", rc); 908 return -EINVAL; 909 } 910 if ((op != 1) && (op != 0)) { 911 pr_err("Illegal value for tpg_enable: %lu\n", op); 912 return -EINVAL; 913 } 914 if (op) { 915 if (atomic_read(&tpg->lport_tpg_enabled)) 916 return -EEXIST; 917 918 atomic_set(&tpg->lport_tpg_enabled, 1); 919 qlt_enable_vha(vha); 920 } else { 921 if (!atomic_read(&tpg->lport_tpg_enabled)) 922 return count; 923 924 atomic_set(&tpg->lport_tpg_enabled, 0); 925 qlt_stop_phase1(vha->vha_tgt.qla_tgt); 926 } 927 928 return count; 929 } 930 931 static ssize_t tcm_qla2xxx_tpg_dynamic_sessions_show(struct config_item *item, 932 char *page) 933 { 934 return target_show_dynamic_sessions(to_tpg(item), page); 935 } 936 937 static ssize_t tcm_qla2xxx_tpg_fabric_prot_type_store(struct config_item *item, 938 const char *page, size_t count) 939 { 940 struct se_portal_group *se_tpg = to_tpg(item); 941 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 942 struct tcm_qla2xxx_tpg, se_tpg); 943 unsigned long val; 944 int ret = kstrtoul(page, 0, &val); 945 946 if (ret) { 947 pr_err("kstrtoul() returned %d for fabric_prot_type\n", ret); 948 return ret; 949 } 950 if (val != 0 && val != 1 && val != 3) { 951 pr_err("Invalid qla2xxx fabric_prot_type: %lu\n", val); 952 return -EINVAL; 953 } 954 tpg->tpg_attrib.fabric_prot_type = val; 955 956 return count; 957 } 958 959 static ssize_t tcm_qla2xxx_tpg_fabric_prot_type_show(struct config_item *item, 960 char *page) 961 { 962 struct se_portal_group *se_tpg = to_tpg(item); 963 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 964 struct tcm_qla2xxx_tpg, se_tpg); 965 966 return sprintf(page, "%d\n", tpg->tpg_attrib.fabric_prot_type); 967 } 968 969 CONFIGFS_ATTR(tcm_qla2xxx_tpg_, enable); 970 CONFIGFS_ATTR_RO(tcm_qla2xxx_tpg_, dynamic_sessions); 971 CONFIGFS_ATTR(tcm_qla2xxx_tpg_, fabric_prot_type); 972 973 static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = { 974 &tcm_qla2xxx_tpg_attr_enable, 975 &tcm_qla2xxx_tpg_attr_dynamic_sessions, 976 &tcm_qla2xxx_tpg_attr_fabric_prot_type, 977 NULL, 978 }; 979 980 static struct se_portal_group *tcm_qla2xxx_make_tpg(struct se_wwn *wwn, 981 const char *name) 982 { 983 struct tcm_qla2xxx_lport *lport = container_of(wwn, 984 struct tcm_qla2xxx_lport, lport_wwn); 985 struct tcm_qla2xxx_tpg *tpg; 986 unsigned long tpgt; 987 int ret; 988 989 if (strstr(name, "tpgt_") != name) 990 return ERR_PTR(-EINVAL); 991 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX) 992 return ERR_PTR(-EINVAL); 993 994 if ((tpgt != 1)) { 995 pr_err("In non NPIV mode, a single TPG=1 is used for HW port mappings\n"); 996 return ERR_PTR(-ENOSYS); 997 } 998 999 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL); 1000 if (!tpg) { 1001 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n"); 1002 return ERR_PTR(-ENOMEM); 1003 } 1004 tpg->lport = lport; 1005 tpg->lport_tpgt = tpgt; 1006 /* 1007 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic 1008 * NodeACLs 1009 */ 1010 tpg->tpg_attrib.generate_node_acls = 1; 1011 tpg->tpg_attrib.demo_mode_write_protect = 1; 1012 tpg->tpg_attrib.cache_dynamic_acls = 1; 1013 tpg->tpg_attrib.demo_mode_login_only = 1; 1014 tpg->tpg_attrib.jam_host = 0; 1015 1016 ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP); 1017 if (ret < 0) { 1018 kfree(tpg); 1019 return NULL; 1020 } 1021 1022 lport->tpg_1 = tpg; 1023 1024 return &tpg->se_tpg; 1025 } 1026 1027 static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg) 1028 { 1029 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1030 struct tcm_qla2xxx_tpg, se_tpg); 1031 struct tcm_qla2xxx_lport *lport = tpg->lport; 1032 struct scsi_qla_host *vha = lport->qla_vha; 1033 /* 1034 * Call into qla2x_target.c LLD logic to shutdown the active 1035 * FC Nexuses and disable target mode operation for this qla_hw_data 1036 */ 1037 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stop) 1038 qlt_stop_phase1(vha->vha_tgt.qla_tgt); 1039 1040 core_tpg_deregister(se_tpg); 1041 /* 1042 * Clear local TPG=1 pointer for non NPIV mode. 1043 */ 1044 lport->tpg_1 = NULL; 1045 kfree(tpg); 1046 } 1047 1048 static ssize_t tcm_qla2xxx_npiv_tpg_enable_show(struct config_item *item, 1049 char *page) 1050 { 1051 return tcm_qla2xxx_tpg_enable_show(item, page); 1052 } 1053 1054 static ssize_t tcm_qla2xxx_npiv_tpg_enable_store(struct config_item *item, 1055 const char *page, size_t count) 1056 { 1057 struct se_portal_group *se_tpg = to_tpg(item); 1058 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn; 1059 struct tcm_qla2xxx_lport *lport = container_of(se_wwn, 1060 struct tcm_qla2xxx_lport, lport_wwn); 1061 struct scsi_qla_host *vha = lport->qla_vha; 1062 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1063 struct tcm_qla2xxx_tpg, se_tpg); 1064 unsigned long op; 1065 int rc; 1066 1067 rc = kstrtoul(page, 0, &op); 1068 if (rc < 0) { 1069 pr_err("kstrtoul() returned %d\n", rc); 1070 return -EINVAL; 1071 } 1072 if ((op != 1) && (op != 0)) { 1073 pr_err("Illegal value for tpg_enable: %lu\n", op); 1074 return -EINVAL; 1075 } 1076 if (op) { 1077 if (atomic_read(&tpg->lport_tpg_enabled)) 1078 return -EEXIST; 1079 1080 atomic_set(&tpg->lport_tpg_enabled, 1); 1081 qlt_enable_vha(vha); 1082 } else { 1083 if (!atomic_read(&tpg->lport_tpg_enabled)) 1084 return count; 1085 1086 atomic_set(&tpg->lport_tpg_enabled, 0); 1087 qlt_stop_phase1(vha->vha_tgt.qla_tgt); 1088 } 1089 1090 return count; 1091 } 1092 1093 CONFIGFS_ATTR(tcm_qla2xxx_npiv_tpg_, enable); 1094 1095 static struct configfs_attribute *tcm_qla2xxx_npiv_tpg_attrs[] = { 1096 &tcm_qla2xxx_npiv_tpg_attr_enable, 1097 NULL, 1098 }; 1099 1100 static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg(struct se_wwn *wwn, 1101 const char *name) 1102 { 1103 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1104 struct tcm_qla2xxx_lport, lport_wwn); 1105 struct tcm_qla2xxx_tpg *tpg; 1106 unsigned long tpgt; 1107 int ret; 1108 1109 if (strstr(name, "tpgt_") != name) 1110 return ERR_PTR(-EINVAL); 1111 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX) 1112 return ERR_PTR(-EINVAL); 1113 1114 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL); 1115 if (!tpg) { 1116 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n"); 1117 return ERR_PTR(-ENOMEM); 1118 } 1119 tpg->lport = lport; 1120 tpg->lport_tpgt = tpgt; 1121 1122 /* 1123 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic 1124 * NodeACLs 1125 */ 1126 tpg->tpg_attrib.generate_node_acls = 1; 1127 tpg->tpg_attrib.demo_mode_write_protect = 1; 1128 tpg->tpg_attrib.cache_dynamic_acls = 1; 1129 tpg->tpg_attrib.demo_mode_login_only = 1; 1130 1131 ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP); 1132 if (ret < 0) { 1133 kfree(tpg); 1134 return NULL; 1135 } 1136 lport->tpg_1 = tpg; 1137 return &tpg->se_tpg; 1138 } 1139 1140 /* 1141 * Expected to be called with struct qla_hw_data->tgt.sess_lock held 1142 */ 1143 static struct fc_port *tcm_qla2xxx_find_sess_by_s_id(scsi_qla_host_t *vha, 1144 const be_id_t s_id) 1145 { 1146 struct tcm_qla2xxx_lport *lport; 1147 struct se_node_acl *se_nacl; 1148 struct tcm_qla2xxx_nacl *nacl; 1149 u32 key; 1150 1151 lport = vha->vha_tgt.target_lport_ptr; 1152 if (!lport) { 1153 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1154 dump_stack(); 1155 return NULL; 1156 } 1157 1158 key = sid_to_key(s_id); 1159 pr_debug("find_sess_by_s_id: 0x%06x\n", key); 1160 1161 se_nacl = btree_lookup32(&lport->lport_fcport_map, key); 1162 if (!se_nacl) { 1163 pr_debug("Unable to locate s_id: 0x%06x\n", key); 1164 return NULL; 1165 } 1166 pr_debug("find_sess_by_s_id: located se_nacl: %p, initiatorname: %s\n", 1167 se_nacl, se_nacl->initiatorname); 1168 1169 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1170 if (!nacl->fc_port) { 1171 pr_err("Unable to locate struct fc_port\n"); 1172 return NULL; 1173 } 1174 1175 return nacl->fc_port; 1176 } 1177 1178 /* 1179 * Expected to be called with struct qla_hw_data->tgt.sess_lock held 1180 */ 1181 static void tcm_qla2xxx_set_sess_by_s_id( 1182 struct tcm_qla2xxx_lport *lport, 1183 struct se_node_acl *new_se_nacl, 1184 struct tcm_qla2xxx_nacl *nacl, 1185 struct se_session *se_sess, 1186 struct fc_port *fc_port, 1187 be_id_t s_id) 1188 { 1189 u32 key; 1190 void *slot; 1191 int rc; 1192 1193 key = sid_to_key(s_id); 1194 pr_debug("set_sess_by_s_id: %06x\n", key); 1195 1196 slot = btree_lookup32(&lport->lport_fcport_map, key); 1197 if (!slot) { 1198 if (new_se_nacl) { 1199 pr_debug("Setting up new fc_port entry to new_se_nacl\n"); 1200 nacl->nport_id = key; 1201 rc = btree_insert32(&lport->lport_fcport_map, key, 1202 new_se_nacl, GFP_ATOMIC); 1203 if (rc) 1204 printk(KERN_ERR "Unable to insert s_id into fcport_map: %06x\n", 1205 (int)key); 1206 } else { 1207 pr_debug("Wiping nonexisting fc_port entry\n"); 1208 } 1209 1210 fc_port->se_sess = se_sess; 1211 nacl->fc_port = fc_port; 1212 return; 1213 } 1214 1215 if (nacl->fc_port) { 1216 if (new_se_nacl == NULL) { 1217 pr_debug("Clearing existing nacl->fc_port and fc_port entry\n"); 1218 btree_remove32(&lport->lport_fcport_map, key); 1219 nacl->fc_port = NULL; 1220 return; 1221 } 1222 pr_debug("Replacing existing nacl->fc_port and fc_port entry\n"); 1223 btree_update32(&lport->lport_fcport_map, key, new_se_nacl); 1224 fc_port->se_sess = se_sess; 1225 nacl->fc_port = fc_port; 1226 return; 1227 } 1228 1229 if (new_se_nacl == NULL) { 1230 pr_debug("Clearing existing fc_port entry\n"); 1231 btree_remove32(&lport->lport_fcport_map, key); 1232 return; 1233 } 1234 1235 pr_debug("Replacing existing fc_port entry w/o active nacl->fc_port\n"); 1236 btree_update32(&lport->lport_fcport_map, key, new_se_nacl); 1237 fc_port->se_sess = se_sess; 1238 nacl->fc_port = fc_port; 1239 1240 pr_debug("Setup nacl->fc_port %p by s_id for se_nacl: %p, initiatorname: %s\n", 1241 nacl->fc_port, new_se_nacl, new_se_nacl->initiatorname); 1242 } 1243 1244 /* 1245 * Expected to be called with struct qla_hw_data->tgt.sess_lock held 1246 */ 1247 static struct fc_port *tcm_qla2xxx_find_sess_by_loop_id( 1248 scsi_qla_host_t *vha, 1249 const uint16_t loop_id) 1250 { 1251 struct tcm_qla2xxx_lport *lport; 1252 struct se_node_acl *se_nacl; 1253 struct tcm_qla2xxx_nacl *nacl; 1254 struct tcm_qla2xxx_fc_loopid *fc_loopid; 1255 1256 lport = vha->vha_tgt.target_lport_ptr; 1257 if (!lport) { 1258 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1259 dump_stack(); 1260 return NULL; 1261 } 1262 1263 pr_debug("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id); 1264 1265 fc_loopid = lport->lport_loopid_map + loop_id; 1266 se_nacl = fc_loopid->se_nacl; 1267 if (!se_nacl) { 1268 pr_debug("Unable to locate se_nacl by loop_id: 0x%04x\n", 1269 loop_id); 1270 return NULL; 1271 } 1272 1273 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1274 1275 if (!nacl->fc_port) { 1276 pr_err("Unable to locate struct fc_port\n"); 1277 return NULL; 1278 } 1279 1280 return nacl->fc_port; 1281 } 1282 1283 /* 1284 * Expected to be called with struct qla_hw_data->tgt.sess_lock held 1285 */ 1286 static void tcm_qla2xxx_set_sess_by_loop_id( 1287 struct tcm_qla2xxx_lport *lport, 1288 struct se_node_acl *new_se_nacl, 1289 struct tcm_qla2xxx_nacl *nacl, 1290 struct se_session *se_sess, 1291 struct fc_port *fc_port, 1292 uint16_t loop_id) 1293 { 1294 struct se_node_acl *saved_nacl; 1295 struct tcm_qla2xxx_fc_loopid *fc_loopid; 1296 1297 pr_debug("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id); 1298 1299 fc_loopid = &((struct tcm_qla2xxx_fc_loopid *) 1300 lport->lport_loopid_map)[loop_id]; 1301 1302 saved_nacl = fc_loopid->se_nacl; 1303 if (!saved_nacl) { 1304 pr_debug("Setting up new fc_loopid->se_nacl to new_se_nacl\n"); 1305 fc_loopid->se_nacl = new_se_nacl; 1306 if (fc_port->se_sess != se_sess) 1307 fc_port->se_sess = se_sess; 1308 if (nacl->fc_port != fc_port) 1309 nacl->fc_port = fc_port; 1310 return; 1311 } 1312 1313 if (nacl->fc_port) { 1314 if (new_se_nacl == NULL) { 1315 pr_debug("Clearing nacl->fc_port and fc_loopid->se_nacl\n"); 1316 fc_loopid->se_nacl = NULL; 1317 nacl->fc_port = NULL; 1318 return; 1319 } 1320 1321 pr_debug("Replacing existing nacl->fc_port and fc_loopid->se_nacl\n"); 1322 fc_loopid->se_nacl = new_se_nacl; 1323 if (fc_port->se_sess != se_sess) 1324 fc_port->se_sess = se_sess; 1325 if (nacl->fc_port != fc_port) 1326 nacl->fc_port = fc_port; 1327 return; 1328 } 1329 1330 if (new_se_nacl == NULL) { 1331 pr_debug("Clearing fc_loopid->se_nacl\n"); 1332 fc_loopid->se_nacl = NULL; 1333 return; 1334 } 1335 1336 pr_debug("Replacing existing fc_loopid->se_nacl w/o active nacl->fc_port\n"); 1337 fc_loopid->se_nacl = new_se_nacl; 1338 if (fc_port->se_sess != se_sess) 1339 fc_port->se_sess = se_sess; 1340 if (nacl->fc_port != fc_port) 1341 nacl->fc_port = fc_port; 1342 1343 pr_debug("Setup nacl->fc_port %p by loop_id for se_nacl: %p, initiatorname: %s\n", 1344 nacl->fc_port, new_se_nacl, new_se_nacl->initiatorname); 1345 } 1346 1347 /* 1348 * Should always be called with qla_hw_data->tgt.sess_lock held. 1349 */ 1350 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *lport, 1351 struct tcm_qla2xxx_nacl *nacl, struct fc_port *sess) 1352 { 1353 struct se_session *se_sess = sess->se_sess; 1354 1355 tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess, 1356 sess, port_id_to_be_id(sess->d_id)); 1357 tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess, 1358 sess, sess->loop_id); 1359 } 1360 1361 static void tcm_qla2xxx_free_session(struct fc_port *sess) 1362 { 1363 struct qla_tgt *tgt = sess->tgt; 1364 struct qla_hw_data *ha = tgt->ha; 1365 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev); 1366 struct se_session *se_sess; 1367 struct tcm_qla2xxx_lport *lport; 1368 1369 BUG_ON(in_interrupt()); 1370 1371 se_sess = sess->se_sess; 1372 if (!se_sess) { 1373 pr_err("struct fc_port->se_sess is NULL\n"); 1374 dump_stack(); 1375 return; 1376 } 1377 1378 lport = vha->vha_tgt.target_lport_ptr; 1379 if (!lport) { 1380 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1381 dump_stack(); 1382 return; 1383 } 1384 target_wait_for_sess_cmds(se_sess); 1385 1386 target_remove_session(se_sess); 1387 } 1388 1389 static int tcm_qla2xxx_session_cb(struct se_portal_group *se_tpg, 1390 struct se_session *se_sess, void *p) 1391 { 1392 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1393 struct tcm_qla2xxx_tpg, se_tpg); 1394 struct tcm_qla2xxx_lport *lport = tpg->lport; 1395 struct qla_hw_data *ha = lport->qla_vha->hw; 1396 struct se_node_acl *se_nacl = se_sess->se_node_acl; 1397 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl, 1398 struct tcm_qla2xxx_nacl, se_node_acl); 1399 struct fc_port *qlat_sess = p; 1400 uint16_t loop_id = qlat_sess->loop_id; 1401 unsigned long flags; 1402 1403 /* 1404 * And now setup se_nacl and session pointers into HW lport internal 1405 * mappings for fabric S_ID and LOOP_ID. 1406 */ 1407 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1408 tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl, se_sess, qlat_sess, 1409 port_id_to_be_id(qlat_sess->d_id)); 1410 tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl, 1411 se_sess, qlat_sess, loop_id); 1412 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1413 1414 return 0; 1415 } 1416 1417 /* 1418 * Called via qlt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl() 1419 * to locate struct se_node_acl 1420 */ 1421 static int tcm_qla2xxx_check_initiator_node_acl( 1422 scsi_qla_host_t *vha, 1423 unsigned char *fc_wwpn, 1424 struct fc_port *qlat_sess) 1425 { 1426 struct qla_hw_data *ha = vha->hw; 1427 struct tcm_qla2xxx_lport *lport; 1428 struct tcm_qla2xxx_tpg *tpg; 1429 struct se_session *se_sess; 1430 unsigned char port_name[36]; 1431 int num_tags = (ha->cur_fw_xcb_count) ? ha->cur_fw_xcb_count : 1432 TCM_QLA2XXX_DEFAULT_TAGS; 1433 1434 lport = vha->vha_tgt.target_lport_ptr; 1435 if (!lport) { 1436 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1437 dump_stack(); 1438 return -EINVAL; 1439 } 1440 /* 1441 * Locate the TPG=1 reference.. 1442 */ 1443 tpg = lport->tpg_1; 1444 if (!tpg) { 1445 pr_err("Unable to locate struct tcm_qla2xxx_lport->tpg_1\n"); 1446 return -EINVAL; 1447 } 1448 /* 1449 * Format the FCP Initiator port_name into colon seperated values to 1450 * match the format by tcm_qla2xxx explict ConfigFS NodeACLs. 1451 */ 1452 memset(&port_name, 0, 36); 1453 snprintf(port_name, sizeof(port_name), "%8phC", fc_wwpn); 1454 /* 1455 * Locate our struct se_node_acl either from an explict NodeACL created 1456 * via ConfigFS, or via running in TPG demo mode. 1457 */ 1458 se_sess = target_setup_session(&tpg->se_tpg, num_tags, 1459 sizeof(struct qla_tgt_cmd), 1460 TARGET_PROT_ALL, port_name, 1461 qlat_sess, tcm_qla2xxx_session_cb); 1462 if (IS_ERR(se_sess)) 1463 return PTR_ERR(se_sess); 1464 1465 return 0; 1466 } 1467 1468 static void tcm_qla2xxx_update_sess(struct fc_port *sess, port_id_t s_id, 1469 uint16_t loop_id, bool conf_compl_supported) 1470 { 1471 struct qla_tgt *tgt = sess->tgt; 1472 struct qla_hw_data *ha = tgt->ha; 1473 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev); 1474 struct tcm_qla2xxx_lport *lport = vha->vha_tgt.target_lport_ptr; 1475 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl; 1476 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl, 1477 struct tcm_qla2xxx_nacl, se_node_acl); 1478 u32 key; 1479 1480 1481 if (sess->loop_id != loop_id || sess->d_id.b24 != s_id.b24) 1482 pr_info("Updating session %p from port %8phC loop_id %d -> %d s_id %x:%x:%x -> %x:%x:%x\n", 1483 sess, sess->port_name, 1484 sess->loop_id, loop_id, sess->d_id.b.domain, 1485 sess->d_id.b.area, sess->d_id.b.al_pa, s_id.b.domain, 1486 s_id.b.area, s_id.b.al_pa); 1487 1488 if (sess->loop_id != loop_id) { 1489 /* 1490 * Because we can shuffle loop IDs around and we 1491 * update different sessions non-atomically, we might 1492 * have overwritten this session's old loop ID 1493 * already, and we might end up overwriting some other 1494 * session that will be updated later. So we have to 1495 * be extra careful and we can't warn about those things... 1496 */ 1497 if (lport->lport_loopid_map[sess->loop_id].se_nacl == se_nacl) 1498 lport->lport_loopid_map[sess->loop_id].se_nacl = NULL; 1499 1500 lport->lport_loopid_map[loop_id].se_nacl = se_nacl; 1501 1502 sess->loop_id = loop_id; 1503 } 1504 1505 if (sess->d_id.b24 != s_id.b24) { 1506 key = (((u32) sess->d_id.b.domain << 16) | 1507 ((u32) sess->d_id.b.area << 8) | 1508 ((u32) sess->d_id.b.al_pa)); 1509 1510 if (btree_lookup32(&lport->lport_fcport_map, key)) 1511 WARN(btree_remove32(&lport->lport_fcport_map, key) != 1512 se_nacl, "Found wrong se_nacl when updating s_id %x:%x:%x\n", 1513 sess->d_id.b.domain, sess->d_id.b.area, 1514 sess->d_id.b.al_pa); 1515 else 1516 WARN(1, "No lport_fcport_map entry for s_id %x:%x:%x\n", 1517 sess->d_id.b.domain, sess->d_id.b.area, 1518 sess->d_id.b.al_pa); 1519 1520 key = (((u32) s_id.b.domain << 16) | 1521 ((u32) s_id.b.area << 8) | 1522 ((u32) s_id.b.al_pa)); 1523 1524 if (btree_lookup32(&lport->lport_fcport_map, key)) { 1525 WARN(1, "Already have lport_fcport_map entry for s_id %x:%x:%x\n", 1526 s_id.b.domain, s_id.b.area, s_id.b.al_pa); 1527 btree_update32(&lport->lport_fcport_map, key, se_nacl); 1528 } else { 1529 btree_insert32(&lport->lport_fcport_map, key, se_nacl, 1530 GFP_ATOMIC); 1531 } 1532 1533 sess->d_id = s_id; 1534 nacl->nport_id = key; 1535 } 1536 1537 sess->conf_compl_supported = conf_compl_supported; 1538 1539 } 1540 1541 /* 1542 * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path. 1543 */ 1544 static struct qla_tgt_func_tmpl tcm_qla2xxx_template = { 1545 .find_cmd_by_tag = tcm_qla2xxx_find_cmd_by_tag, 1546 .handle_cmd = tcm_qla2xxx_handle_cmd, 1547 .handle_data = tcm_qla2xxx_handle_data, 1548 .handle_tmr = tcm_qla2xxx_handle_tmr, 1549 .free_cmd = tcm_qla2xxx_free_cmd, 1550 .free_mcmd = tcm_qla2xxx_free_mcmd, 1551 .free_session = tcm_qla2xxx_free_session, 1552 .update_sess = tcm_qla2xxx_update_sess, 1553 .check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl, 1554 .find_sess_by_s_id = tcm_qla2xxx_find_sess_by_s_id, 1555 .find_sess_by_loop_id = tcm_qla2xxx_find_sess_by_loop_id, 1556 .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map, 1557 .put_sess = tcm_qla2xxx_put_sess, 1558 .shutdown_sess = tcm_qla2xxx_shutdown_sess, 1559 .get_dif_tags = tcm_qla2xxx_dif_tags, 1560 .chk_dif_tags = tcm_qla2xxx_chk_dif_tags, 1561 }; 1562 1563 static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport) 1564 { 1565 int rc; 1566 1567 rc = btree_init32(&lport->lport_fcport_map); 1568 if (rc) { 1569 pr_err("Unable to initialize lport->lport_fcport_map btree\n"); 1570 return rc; 1571 } 1572 1573 lport->lport_loopid_map = 1574 vzalloc(array_size(65536, 1575 sizeof(struct tcm_qla2xxx_fc_loopid))); 1576 if (!lport->lport_loopid_map) { 1577 pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n", 1578 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536); 1579 btree_destroy32(&lport->lport_fcport_map); 1580 return -ENOMEM; 1581 } 1582 pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n", 1583 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536); 1584 return 0; 1585 } 1586 1587 static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha, 1588 void *target_lport_ptr, 1589 u64 npiv_wwpn, u64 npiv_wwnn) 1590 { 1591 struct qla_hw_data *ha = vha->hw; 1592 struct tcm_qla2xxx_lport *lport = 1593 (struct tcm_qla2xxx_lport *)target_lport_ptr; 1594 /* 1595 * Setup tgt_ops, local pointer to vha and target_lport_ptr 1596 */ 1597 ha->tgt.tgt_ops = &tcm_qla2xxx_template; 1598 vha->vha_tgt.target_lport_ptr = target_lport_ptr; 1599 lport->qla_vha = vha; 1600 1601 return 0; 1602 } 1603 1604 static struct se_wwn *tcm_qla2xxx_make_lport( 1605 struct target_fabric_configfs *tf, 1606 struct config_group *group, 1607 const char *name) 1608 { 1609 struct tcm_qla2xxx_lport *lport; 1610 u64 wwpn; 1611 int ret = -ENODEV; 1612 1613 if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0) 1614 return ERR_PTR(-EINVAL); 1615 1616 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL); 1617 if (!lport) { 1618 pr_err("Unable to allocate struct tcm_qla2xxx_lport\n"); 1619 return ERR_PTR(-ENOMEM); 1620 } 1621 lport->lport_wwpn = wwpn; 1622 tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN, 1623 wwpn); 1624 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) wwpn); 1625 1626 ret = tcm_qla2xxx_init_lport(lport); 1627 if (ret != 0) 1628 goto out; 1629 1630 ret = qlt_lport_register(lport, wwpn, 0, 0, 1631 tcm_qla2xxx_lport_register_cb); 1632 if (ret != 0) 1633 goto out_lport; 1634 1635 return &lport->lport_wwn; 1636 out_lport: 1637 vfree(lport->lport_loopid_map); 1638 btree_destroy32(&lport->lport_fcport_map); 1639 out: 1640 kfree(lport); 1641 return ERR_PTR(ret); 1642 } 1643 1644 static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn) 1645 { 1646 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1647 struct tcm_qla2xxx_lport, lport_wwn); 1648 struct scsi_qla_host *vha = lport->qla_vha; 1649 struct se_node_acl *node; 1650 u32 key = 0; 1651 1652 /* 1653 * Call into qla2x_target.c LLD logic to complete the 1654 * shutdown of struct qla_tgt after the call to 1655 * qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above.. 1656 */ 1657 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stopped) 1658 qlt_stop_phase2(vha->vha_tgt.qla_tgt); 1659 1660 qlt_lport_deregister(vha); 1661 1662 vfree(lport->lport_loopid_map); 1663 btree_for_each_safe32(&lport->lport_fcport_map, key, node) 1664 btree_remove32(&lport->lport_fcport_map, key); 1665 btree_destroy32(&lport->lport_fcport_map); 1666 kfree(lport); 1667 } 1668 1669 static int tcm_qla2xxx_lport_register_npiv_cb(struct scsi_qla_host *base_vha, 1670 void *target_lport_ptr, 1671 u64 npiv_wwpn, u64 npiv_wwnn) 1672 { 1673 struct fc_vport *vport; 1674 struct Scsi_Host *sh = base_vha->host; 1675 struct scsi_qla_host *npiv_vha; 1676 struct tcm_qla2xxx_lport *lport = 1677 (struct tcm_qla2xxx_lport *)target_lport_ptr; 1678 struct tcm_qla2xxx_lport *base_lport = 1679 (struct tcm_qla2xxx_lport *)base_vha->vha_tgt.target_lport_ptr; 1680 struct fc_vport_identifiers vport_id; 1681 1682 if (qla_ini_mode_enabled(base_vha)) { 1683 pr_err("qla2xxx base_vha not enabled for target mode\n"); 1684 return -EPERM; 1685 } 1686 1687 if (!base_lport || !base_lport->tpg_1 || 1688 !atomic_read(&base_lport->tpg_1->lport_tpg_enabled)) { 1689 pr_err("qla2xxx base_lport or tpg_1 not available\n"); 1690 return -EPERM; 1691 } 1692 1693 memset(&vport_id, 0, sizeof(vport_id)); 1694 vport_id.port_name = npiv_wwpn; 1695 vport_id.node_name = npiv_wwnn; 1696 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR; 1697 vport_id.vport_type = FC_PORTTYPE_NPIV; 1698 vport_id.disable = false; 1699 1700 vport = fc_vport_create(sh, 0, &vport_id); 1701 if (!vport) { 1702 pr_err("fc_vport_create failed for qla2xxx_npiv\n"); 1703 return -ENODEV; 1704 } 1705 /* 1706 * Setup local pointer to NPIV vhba + target_lport_ptr 1707 */ 1708 npiv_vha = (struct scsi_qla_host *)vport->dd_data; 1709 npiv_vha->vha_tgt.target_lport_ptr = target_lport_ptr; 1710 lport->qla_vha = npiv_vha; 1711 scsi_host_get(npiv_vha->host); 1712 return 0; 1713 } 1714 1715 1716 static struct se_wwn *tcm_qla2xxx_npiv_make_lport( 1717 struct target_fabric_configfs *tf, 1718 struct config_group *group, 1719 const char *name) 1720 { 1721 struct tcm_qla2xxx_lport *lport; 1722 u64 phys_wwpn, npiv_wwpn, npiv_wwnn; 1723 char *p, tmp[128]; 1724 int ret; 1725 1726 snprintf(tmp, 128, "%s", name); 1727 1728 p = strchr(tmp, '@'); 1729 if (!p) { 1730 pr_err("Unable to locate NPIV '@' separator\n"); 1731 return ERR_PTR(-EINVAL); 1732 } 1733 *p++ = '\0'; 1734 1735 if (tcm_qla2xxx_parse_wwn(tmp, &phys_wwpn, 1) < 0) 1736 return ERR_PTR(-EINVAL); 1737 1738 if (tcm_qla2xxx_npiv_parse_wwn(p, strlen(p)+1, 1739 &npiv_wwpn, &npiv_wwnn) < 0) 1740 return ERR_PTR(-EINVAL); 1741 1742 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL); 1743 if (!lport) { 1744 pr_err("Unable to allocate struct tcm_qla2xxx_lport for NPIV\n"); 1745 return ERR_PTR(-ENOMEM); 1746 } 1747 lport->lport_npiv_wwpn = npiv_wwpn; 1748 lport->lport_npiv_wwnn = npiv_wwnn; 1749 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) npiv_wwpn); 1750 1751 ret = tcm_qla2xxx_init_lport(lport); 1752 if (ret != 0) 1753 goto out; 1754 1755 ret = qlt_lport_register(lport, phys_wwpn, npiv_wwpn, npiv_wwnn, 1756 tcm_qla2xxx_lport_register_npiv_cb); 1757 if (ret != 0) 1758 goto out_lport; 1759 1760 return &lport->lport_wwn; 1761 out_lport: 1762 vfree(lport->lport_loopid_map); 1763 btree_destroy32(&lport->lport_fcport_map); 1764 out: 1765 kfree(lport); 1766 return ERR_PTR(ret); 1767 } 1768 1769 static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn) 1770 { 1771 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1772 struct tcm_qla2xxx_lport, lport_wwn); 1773 struct scsi_qla_host *npiv_vha = lport->qla_vha; 1774 struct qla_hw_data *ha = npiv_vha->hw; 1775 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 1776 1777 scsi_host_put(npiv_vha->host); 1778 /* 1779 * Notify libfc that we want to release the vha->fc_vport 1780 */ 1781 fc_vport_terminate(npiv_vha->fc_vport); 1782 scsi_host_put(base_vha->host); 1783 kfree(lport); 1784 } 1785 1786 1787 static ssize_t tcm_qla2xxx_wwn_version_show(struct config_item *item, 1788 char *page) 1789 { 1790 return sprintf(page, 1791 "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s on %s\n", 1792 QLA2XXX_VERSION, utsname()->sysname, 1793 utsname()->machine, utsname()->release); 1794 } 1795 1796 CONFIGFS_ATTR_RO(tcm_qla2xxx_wwn_, version); 1797 1798 static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = { 1799 &tcm_qla2xxx_wwn_attr_version, 1800 NULL, 1801 }; 1802 1803 static const struct target_core_fabric_ops tcm_qla2xxx_ops = { 1804 .module = THIS_MODULE, 1805 .fabric_name = "qla2xxx", 1806 .node_acl_size = sizeof(struct tcm_qla2xxx_nacl), 1807 /* 1808 * XXX: Limit assumes single page per scatter-gather-list entry. 1809 * Current maximum is ~4.9 MB per se_cmd->t_data_sg with PAGE_SIZE=4096 1810 */ 1811 .max_data_sg_nents = 1200, 1812 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn, 1813 .tpg_get_tag = tcm_qla2xxx_get_tag, 1814 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode, 1815 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache, 1816 .tpg_check_demo_mode_write_protect = 1817 tcm_qla2xxx_check_demo_write_protect, 1818 .tpg_check_prod_mode_write_protect = 1819 tcm_qla2xxx_check_prod_write_protect, 1820 .tpg_check_prot_fabric_only = tcm_qla2xxx_check_prot_fabric_only, 1821 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only, 1822 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index, 1823 .check_stop_free = tcm_qla2xxx_check_stop_free, 1824 .release_cmd = tcm_qla2xxx_release_cmd, 1825 .close_session = tcm_qla2xxx_close_session, 1826 .sess_get_index = tcm_qla2xxx_sess_get_index, 1827 .sess_get_initiator_sid = NULL, 1828 .write_pending = tcm_qla2xxx_write_pending, 1829 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs, 1830 .get_cmd_state = tcm_qla2xxx_get_cmd_state, 1831 .queue_data_in = tcm_qla2xxx_queue_data_in, 1832 .queue_status = tcm_qla2xxx_queue_status, 1833 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp, 1834 .aborted_task = tcm_qla2xxx_aborted_task, 1835 /* 1836 * Setup function pointers for generic logic in 1837 * target_core_fabric_configfs.c 1838 */ 1839 .fabric_make_wwn = tcm_qla2xxx_make_lport, 1840 .fabric_drop_wwn = tcm_qla2xxx_drop_lport, 1841 .fabric_make_tpg = tcm_qla2xxx_make_tpg, 1842 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg, 1843 .fabric_init_nodeacl = tcm_qla2xxx_init_nodeacl, 1844 1845 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs, 1846 .tfc_tpg_base_attrs = tcm_qla2xxx_tpg_attrs, 1847 .tfc_tpg_attrib_attrs = tcm_qla2xxx_tpg_attrib_attrs, 1848 }; 1849 1850 static const struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = { 1851 .module = THIS_MODULE, 1852 .fabric_name = "qla2xxx_npiv", 1853 .node_acl_size = sizeof(struct tcm_qla2xxx_nacl), 1854 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn, 1855 .tpg_get_tag = tcm_qla2xxx_get_tag, 1856 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode, 1857 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache, 1858 .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_demo_mode, 1859 .tpg_check_prod_mode_write_protect = 1860 tcm_qla2xxx_check_prod_write_protect, 1861 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only, 1862 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index, 1863 .check_stop_free = tcm_qla2xxx_check_stop_free, 1864 .release_cmd = tcm_qla2xxx_release_cmd, 1865 .close_session = tcm_qla2xxx_close_session, 1866 .sess_get_index = tcm_qla2xxx_sess_get_index, 1867 .sess_get_initiator_sid = NULL, 1868 .write_pending = tcm_qla2xxx_write_pending, 1869 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs, 1870 .get_cmd_state = tcm_qla2xxx_get_cmd_state, 1871 .queue_data_in = tcm_qla2xxx_queue_data_in, 1872 .queue_status = tcm_qla2xxx_queue_status, 1873 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp, 1874 .aborted_task = tcm_qla2xxx_aborted_task, 1875 /* 1876 * Setup function pointers for generic logic in 1877 * target_core_fabric_configfs.c 1878 */ 1879 .fabric_make_wwn = tcm_qla2xxx_npiv_make_lport, 1880 .fabric_drop_wwn = tcm_qla2xxx_npiv_drop_lport, 1881 .fabric_make_tpg = tcm_qla2xxx_npiv_make_tpg, 1882 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg, 1883 .fabric_init_nodeacl = tcm_qla2xxx_init_nodeacl, 1884 1885 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs, 1886 .tfc_tpg_base_attrs = tcm_qla2xxx_npiv_tpg_attrs, 1887 }; 1888 1889 static int tcm_qla2xxx_register_configfs(void) 1890 { 1891 int ret; 1892 1893 pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on %s\n", 1894 QLA2XXX_VERSION, utsname()->sysname, 1895 utsname()->machine, utsname()->release); 1896 1897 ret = target_register_template(&tcm_qla2xxx_ops); 1898 if (ret) 1899 return ret; 1900 1901 ret = target_register_template(&tcm_qla2xxx_npiv_ops); 1902 if (ret) 1903 goto out_fabric; 1904 1905 tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free", 1906 WQ_MEM_RECLAIM, 0); 1907 if (!tcm_qla2xxx_free_wq) { 1908 ret = -ENOMEM; 1909 goto out_fabric_npiv; 1910 } 1911 1912 return 0; 1913 1914 out_fabric_npiv: 1915 target_unregister_template(&tcm_qla2xxx_npiv_ops); 1916 out_fabric: 1917 target_unregister_template(&tcm_qla2xxx_ops); 1918 return ret; 1919 } 1920 1921 static void tcm_qla2xxx_deregister_configfs(void) 1922 { 1923 destroy_workqueue(tcm_qla2xxx_free_wq); 1924 1925 target_unregister_template(&tcm_qla2xxx_ops); 1926 target_unregister_template(&tcm_qla2xxx_npiv_ops); 1927 } 1928 1929 static int __init tcm_qla2xxx_init(void) 1930 { 1931 int ret; 1932 1933 ret = tcm_qla2xxx_register_configfs(); 1934 if (ret < 0) 1935 return ret; 1936 1937 return 0; 1938 } 1939 1940 static void __exit tcm_qla2xxx_exit(void) 1941 { 1942 tcm_qla2xxx_deregister_configfs(); 1943 } 1944 1945 MODULE_DESCRIPTION("TCM QLA24XX+ series NPIV enabled fabric driver"); 1946 MODULE_LICENSE("GPL"); 1947 module_init(tcm_qla2xxx_init); 1948 module_exit(tcm_qla2xxx_exit); 1949