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/utsname.h> 28 #include <linux/vmalloc.h> 29 #include <linux/list.h> 30 #include <linux/slab.h> 31 #include <linux/types.h> 32 #include <linux/string.h> 33 #include <linux/configfs.h> 34 #include <linux/ctype.h> 35 #include <asm/unaligned.h> 36 #include <scsi/scsi_host.h> 37 #include <target/target_core_base.h> 38 #include <target/target_core_fabric.h> 39 40 #include "qla_def.h" 41 #include "qla_target.h" 42 #include "tcm_qla2xxx.h" 43 44 static struct workqueue_struct *tcm_qla2xxx_free_wq; 45 46 /* 47 * Parse WWN. 48 * If strict, we require lower-case hex and colon separators to be sure 49 * the name is the same as what would be generated by ft_format_wwn() 50 * so the name and wwn are mapped one-to-one. 51 */ 52 static ssize_t tcm_qla2xxx_parse_wwn(const char *name, u64 *wwn, int strict) 53 { 54 const char *cp; 55 char c; 56 u32 nibble; 57 u32 byte = 0; 58 u32 pos = 0; 59 u32 err; 60 61 *wwn = 0; 62 for (cp = name; cp < &name[TCM_QLA2XXX_NAMELEN - 1]; cp++) { 63 c = *cp; 64 if (c == '\n' && cp[1] == '\0') 65 continue; 66 if (strict && pos++ == 2 && byte++ < 7) { 67 pos = 0; 68 if (c == ':') 69 continue; 70 err = 1; 71 goto fail; 72 } 73 if (c == '\0') { 74 err = 2; 75 if (strict && byte != 8) 76 goto fail; 77 return cp - name; 78 } 79 err = 3; 80 if (isdigit(c)) 81 nibble = c - '0'; 82 else if (isxdigit(c) && (islower(c) || !strict)) 83 nibble = tolower(c) - 'a' + 10; 84 else 85 goto fail; 86 *wwn = (*wwn << 4) | nibble; 87 } 88 err = 4; 89 fail: 90 pr_debug("err %u len %zu pos %u byte %u\n", 91 err, cp - name, pos, byte); 92 return -1; 93 } 94 95 static ssize_t tcm_qla2xxx_format_wwn(char *buf, size_t len, u64 wwn) 96 { 97 u8 b[8]; 98 99 put_unaligned_be64(wwn, b); 100 return snprintf(buf, len, 101 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x", 102 b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7]); 103 } 104 105 /* 106 * From drivers/scsi/scsi_transport_fc.c:fc_parse_wwn 107 */ 108 static int tcm_qla2xxx_npiv_extract_wwn(const char *ns, u64 *nm) 109 { 110 unsigned int i, j; 111 u8 wwn[8]; 112 113 memset(wwn, 0, sizeof(wwn)); 114 115 /* Validate and store the new name */ 116 for (i = 0, j = 0; i < 16; i++) { 117 int value; 118 119 value = hex_to_bin(*ns++); 120 if (value >= 0) 121 j = (j << 4) | value; 122 else 123 return -EINVAL; 124 125 if (i % 2) { 126 wwn[i/2] = j & 0xff; 127 j = 0; 128 } 129 } 130 131 *nm = wwn_to_u64(wwn); 132 return 0; 133 } 134 135 /* 136 * This parsing logic follows drivers/scsi/scsi_transport_fc.c: 137 * store_fc_host_vport_create() 138 */ 139 static int tcm_qla2xxx_npiv_parse_wwn( 140 const char *name, 141 size_t count, 142 u64 *wwpn, 143 u64 *wwnn) 144 { 145 unsigned int cnt = count; 146 int rc; 147 148 *wwpn = 0; 149 *wwnn = 0; 150 151 /* count may include a LF at end of string */ 152 if (name[cnt-1] == '\n' || name[cnt-1] == 0) 153 cnt--; 154 155 /* validate we have enough characters for WWPN */ 156 if ((cnt != (16+1+16)) || (name[16] != ':')) 157 return -EINVAL; 158 159 rc = tcm_qla2xxx_npiv_extract_wwn(&name[0], wwpn); 160 if (rc != 0) 161 return rc; 162 163 rc = tcm_qla2xxx_npiv_extract_wwn(&name[17], wwnn); 164 if (rc != 0) 165 return rc; 166 167 return 0; 168 } 169 170 static char *tcm_qla2xxx_get_fabric_wwn(struct se_portal_group *se_tpg) 171 { 172 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 173 struct tcm_qla2xxx_tpg, se_tpg); 174 struct tcm_qla2xxx_lport *lport = tpg->lport; 175 176 return lport->lport_naa_name; 177 } 178 179 static u16 tcm_qla2xxx_get_tag(struct se_portal_group *se_tpg) 180 { 181 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 182 struct tcm_qla2xxx_tpg, se_tpg); 183 return tpg->lport_tpgt; 184 } 185 186 static int tcm_qla2xxx_check_demo_mode(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.generate_node_acls; 192 } 193 194 static int tcm_qla2xxx_check_demo_mode_cache(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.cache_dynamic_acls; 200 } 201 202 static int tcm_qla2xxx_check_demo_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.demo_mode_write_protect; 208 } 209 210 static int tcm_qla2xxx_check_prod_write_protect(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.prod_mode_write_protect; 216 } 217 218 static int tcm_qla2xxx_check_demo_mode_login_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.demo_mode_login_only; 224 } 225 226 static int tcm_qla2xxx_check_prot_fabric_only(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->tpg_attrib.fabric_prot_type; 232 } 233 234 static u32 tcm_qla2xxx_tpg_get_inst_index(struct se_portal_group *se_tpg) 235 { 236 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 237 struct tcm_qla2xxx_tpg, se_tpg); 238 239 return tpg->lport_tpgt; 240 } 241 242 static void tcm_qla2xxx_complete_mcmd(struct work_struct *work) 243 { 244 struct qla_tgt_mgmt_cmd *mcmd = container_of(work, 245 struct qla_tgt_mgmt_cmd, free_work); 246 247 transport_generic_free_cmd(&mcmd->se_cmd, 0); 248 } 249 250 /* 251 * Called from qla_target_template->free_mcmd(), and will call 252 * tcm_qla2xxx_release_cmd() via normal struct target_core_fabric_ops 253 * release callback. qla_hw_data->hardware_lock is expected to be held 254 */ 255 static void tcm_qla2xxx_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd) 256 { 257 INIT_WORK(&mcmd->free_work, tcm_qla2xxx_complete_mcmd); 258 queue_work(tcm_qla2xxx_free_wq, &mcmd->free_work); 259 } 260 261 static void tcm_qla2xxx_complete_free(struct work_struct *work) 262 { 263 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 264 265 cmd->cmd_in_wq = 0; 266 267 WARN_ON(cmd->trc_flags & TRC_CMD_FREE); 268 269 /* To do: protect all tgt_counters manipulations with proper locking. */ 270 cmd->qpair->tgt_counters.qla_core_ret_sta_ctio++; 271 cmd->trc_flags |= TRC_CMD_FREE; 272 cmd->cmd_sent_to_fw = 0; 273 274 transport_generic_free_cmd(&cmd->se_cmd, 0); 275 } 276 277 /* 278 * Called from qla_target_template->free_cmd(), and will call 279 * tcm_qla2xxx_release_cmd via normal struct target_core_fabric_ops 280 * release callback. qla_hw_data->hardware_lock is expected to be held 281 */ 282 static void tcm_qla2xxx_free_cmd(struct qla_tgt_cmd *cmd) 283 { 284 cmd->qpair->tgt_counters.core_qla_free_cmd++; 285 cmd->cmd_in_wq = 1; 286 287 WARN_ON(cmd->trc_flags & TRC_CMD_DONE); 288 cmd->trc_flags |= TRC_CMD_DONE; 289 290 INIT_WORK(&cmd->work, tcm_qla2xxx_complete_free); 291 queue_work_on(smp_processor_id(), tcm_qla2xxx_free_wq, &cmd->work); 292 } 293 294 /* 295 * Called from struct target_core_fabric_ops->check_stop_free() context 296 */ 297 static int tcm_qla2xxx_check_stop_free(struct se_cmd *se_cmd) 298 { 299 struct qla_tgt_cmd *cmd; 300 301 if ((se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) == 0) { 302 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd); 303 cmd->trc_flags |= TRC_CMD_CHK_STOP; 304 } 305 306 return target_put_sess_cmd(se_cmd); 307 } 308 309 /* tcm_qla2xxx_release_cmd - Callback from TCM Core to release underlying 310 * fabric descriptor @se_cmd command to release 311 */ 312 static void tcm_qla2xxx_release_cmd(struct se_cmd *se_cmd) 313 { 314 struct qla_tgt_cmd *cmd; 315 316 if (se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) { 317 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd, 318 struct qla_tgt_mgmt_cmd, se_cmd); 319 qlt_free_mcmd(mcmd); 320 return; 321 } 322 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd); 323 324 if (WARN_ON(cmd->cmd_sent_to_fw)) 325 return; 326 327 qlt_free_cmd(cmd); 328 } 329 330 static void tcm_qla2xxx_release_session(struct kref *kref) 331 { 332 struct fc_port *sess = container_of(kref, 333 struct fc_port, sess_kref); 334 335 qlt_unreg_sess(sess); 336 } 337 338 static void tcm_qla2xxx_put_sess(struct fc_port *sess) 339 { 340 if (!sess) 341 return; 342 343 kref_put(&sess->sess_kref, tcm_qla2xxx_release_session); 344 } 345 346 static void tcm_qla2xxx_close_session(struct se_session *se_sess) 347 { 348 struct fc_port *sess = se_sess->fabric_sess_ptr; 349 struct scsi_qla_host *vha; 350 unsigned long flags; 351 352 BUG_ON(!sess); 353 vha = sess->vha; 354 355 spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags); 356 target_sess_cmd_list_set_waiting(se_sess); 357 spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags); 358 359 tcm_qla2xxx_put_sess(sess); 360 } 361 362 static u32 tcm_qla2xxx_sess_get_index(struct se_session *se_sess) 363 { 364 return 0; 365 } 366 367 static int tcm_qla2xxx_write_pending(struct se_cmd *se_cmd) 368 { 369 struct qla_tgt_cmd *cmd = container_of(se_cmd, 370 struct qla_tgt_cmd, se_cmd); 371 372 if (cmd->aborted) { 373 /* Cmd can loop during Q-full. tcm_qla2xxx_aborted_task 374 * can get ahead of this cmd. tcm_qla2xxx_aborted_task 375 * already kick start the free. 376 */ 377 pr_debug("write_pending aborted cmd[%p] refcount %d " 378 "transport_state %x, t_state %x, se_cmd_flags %x\n", 379 cmd, kref_read(&cmd->se_cmd.cmd_kref), 380 cmd->se_cmd.transport_state, 381 cmd->se_cmd.t_state, 382 cmd->se_cmd.se_cmd_flags); 383 transport_generic_request_failure(&cmd->se_cmd, 384 TCM_CHECK_CONDITION_ABORT_CMD); 385 return 0; 386 } 387 cmd->trc_flags |= TRC_XFR_RDY; 388 cmd->bufflen = se_cmd->data_length; 389 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd); 390 391 cmd->sg_cnt = se_cmd->t_data_nents; 392 cmd->sg = se_cmd->t_data_sg; 393 394 cmd->prot_sg_cnt = se_cmd->t_prot_nents; 395 cmd->prot_sg = se_cmd->t_prot_sg; 396 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size; 397 se_cmd->pi_err = 0; 398 399 /* 400 * qla_target.c:qlt_rdy_to_xfer() will call dma_map_sg() to setup 401 * the SGL mappings into PCIe memory for incoming FCP WRITE data. 402 */ 403 return qlt_rdy_to_xfer(cmd); 404 } 405 406 static void tcm_qla2xxx_set_default_node_attrs(struct se_node_acl *nacl) 407 { 408 return; 409 } 410 411 static int tcm_qla2xxx_get_cmd_state(struct se_cmd *se_cmd) 412 { 413 if (!(se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB)) { 414 struct qla_tgt_cmd *cmd = container_of(se_cmd, 415 struct qla_tgt_cmd, se_cmd); 416 return cmd->state; 417 } 418 419 return 0; 420 } 421 422 /* 423 * Called from process context in qla_target.c:qlt_do_work() code 424 */ 425 static int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd, 426 unsigned char *cdb, uint32_t data_length, int fcp_task_attr, 427 int data_dir, int bidi) 428 { 429 struct se_cmd *se_cmd = &cmd->se_cmd; 430 struct se_session *se_sess; 431 struct fc_port *sess; 432 #ifdef CONFIG_TCM_QLA2XXX_DEBUG 433 struct se_portal_group *se_tpg; 434 struct tcm_qla2xxx_tpg *tpg; 435 #endif 436 int flags = TARGET_SCF_ACK_KREF; 437 438 if (bidi) 439 flags |= TARGET_SCF_BIDI_OP; 440 441 if (se_cmd->cpuid != WORK_CPU_UNBOUND) 442 flags |= TARGET_SCF_USE_CPUID; 443 444 sess = cmd->sess; 445 if (!sess) { 446 pr_err("Unable to locate struct fc_port from qla_tgt_cmd\n"); 447 return -EINVAL; 448 } 449 450 se_sess = sess->se_sess; 451 if (!se_sess) { 452 pr_err("Unable to locate active struct se_session\n"); 453 return -EINVAL; 454 } 455 456 #ifdef CONFIG_TCM_QLA2XXX_DEBUG 457 se_tpg = se_sess->se_tpg; 458 tpg = container_of(se_tpg, struct tcm_qla2xxx_tpg, se_tpg); 459 if (unlikely(tpg->tpg_attrib.jam_host)) { 460 /* return, and dont run target_submit_cmd,discarding command */ 461 return 0; 462 } 463 #endif 464 465 cmd->qpair->tgt_counters.qla_core_sbt_cmd++; 466 return target_submit_cmd(se_cmd, se_sess, cdb, &cmd->sense_buffer[0], 467 cmd->unpacked_lun, data_length, fcp_task_attr, 468 data_dir, flags); 469 } 470 471 static void tcm_qla2xxx_handle_data_work(struct work_struct *work) 472 { 473 struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work); 474 475 /* 476 * Ensure that the complete FCP WRITE payload has been received. 477 * Otherwise return an exception via CHECK_CONDITION status. 478 */ 479 cmd->cmd_in_wq = 0; 480 cmd->cmd_sent_to_fw = 0; 481 if (cmd->aborted) { 482 transport_generic_request_failure(&cmd->se_cmd, 483 TCM_CHECK_CONDITION_ABORT_CMD); 484 return; 485 } 486 487 cmd->qpair->tgt_counters.qla_core_ret_ctio++; 488 if (!cmd->write_data_transferred) { 489 switch (cmd->dif_err_code) { 490 case DIF_ERR_GRD: 491 cmd->se_cmd.pi_err = 492 TCM_LOGICAL_BLOCK_GUARD_CHECK_FAILED; 493 break; 494 case DIF_ERR_REF: 495 cmd->se_cmd.pi_err = 496 TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED; 497 break; 498 case DIF_ERR_APP: 499 cmd->se_cmd.pi_err = 500 TCM_LOGICAL_BLOCK_APP_TAG_CHECK_FAILED; 501 break; 502 case DIF_ERR_NONE: 503 default: 504 break; 505 } 506 507 if (cmd->se_cmd.pi_err) 508 transport_generic_request_failure(&cmd->se_cmd, 509 cmd->se_cmd.pi_err); 510 else 511 transport_generic_request_failure(&cmd->se_cmd, 512 TCM_CHECK_CONDITION_ABORT_CMD); 513 514 return; 515 } 516 517 return target_execute_cmd(&cmd->se_cmd); 518 } 519 520 /* 521 * Called from qla_target.c:qlt_do_ctio_completion() 522 */ 523 static void tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd) 524 { 525 cmd->trc_flags |= TRC_DATA_IN; 526 cmd->cmd_in_wq = 1; 527 INIT_WORK(&cmd->work, tcm_qla2xxx_handle_data_work); 528 queue_work_on(smp_processor_id(), tcm_qla2xxx_free_wq, &cmd->work); 529 } 530 531 static int tcm_qla2xxx_chk_dif_tags(uint32_t tag) 532 { 533 return 0; 534 } 535 536 static int tcm_qla2xxx_dif_tags(struct qla_tgt_cmd *cmd, 537 uint16_t *pfw_prot_opts) 538 { 539 struct se_cmd *se_cmd = &cmd->se_cmd; 540 541 if (!(se_cmd->prot_checks & TARGET_DIF_CHECK_GUARD)) 542 *pfw_prot_opts |= PO_DISABLE_GUARD_CHECK; 543 544 if (!(se_cmd->prot_checks & TARGET_DIF_CHECK_APPTAG)) 545 *pfw_prot_opts |= PO_DIS_APP_TAG_VALD; 546 547 return 0; 548 } 549 550 /* 551 * Called from qla_target.c:qlt_issue_task_mgmt() 552 */ 553 static int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *mcmd, u64 lun, 554 uint16_t tmr_func, uint32_t tag) 555 { 556 struct fc_port *sess = mcmd->sess; 557 struct se_cmd *se_cmd = &mcmd->se_cmd; 558 int transl_tmr_func = 0; 559 int flags = TARGET_SCF_ACK_KREF; 560 561 switch (tmr_func) { 562 case QLA_TGT_ABTS: 563 pr_debug("%ld: ABTS received\n", sess->vha->host_no); 564 transl_tmr_func = TMR_ABORT_TASK; 565 flags |= TARGET_SCF_LOOKUP_LUN_FROM_TAG; 566 break; 567 case QLA_TGT_2G_ABORT_TASK: 568 pr_debug("%ld: 2G Abort Task received\n", sess->vha->host_no); 569 transl_tmr_func = TMR_ABORT_TASK; 570 break; 571 case QLA_TGT_CLEAR_ACA: 572 pr_debug("%ld: CLEAR_ACA received\n", sess->vha->host_no); 573 transl_tmr_func = TMR_CLEAR_ACA; 574 break; 575 case QLA_TGT_TARGET_RESET: 576 pr_debug("%ld: TARGET_RESET received\n", sess->vha->host_no); 577 transl_tmr_func = TMR_TARGET_WARM_RESET; 578 break; 579 case QLA_TGT_LUN_RESET: 580 pr_debug("%ld: LUN_RESET received\n", sess->vha->host_no); 581 transl_tmr_func = TMR_LUN_RESET; 582 break; 583 case QLA_TGT_CLEAR_TS: 584 pr_debug("%ld: CLEAR_TS received\n", sess->vha->host_no); 585 transl_tmr_func = TMR_CLEAR_TASK_SET; 586 break; 587 case QLA_TGT_ABORT_TS: 588 pr_debug("%ld: ABORT_TS received\n", sess->vha->host_no); 589 transl_tmr_func = TMR_ABORT_TASK_SET; 590 break; 591 default: 592 pr_debug("%ld: Unknown task mgmt fn 0x%x\n", 593 sess->vha->host_no, tmr_func); 594 return -ENOSYS; 595 } 596 597 return target_submit_tmr(se_cmd, sess->se_sess, NULL, lun, mcmd, 598 transl_tmr_func, GFP_ATOMIC, tag, flags); 599 } 600 601 static struct qla_tgt_cmd *tcm_qla2xxx_find_cmd_by_tag(struct fc_port *sess, 602 uint64_t tag) 603 { 604 struct qla_tgt_cmd *cmd = NULL; 605 struct se_cmd *secmd; 606 unsigned long flags; 607 608 if (!sess->se_sess) 609 return NULL; 610 611 spin_lock_irqsave(&sess->se_sess->sess_cmd_lock, flags); 612 list_for_each_entry(secmd, &sess->se_sess->sess_cmd_list, se_cmd_list) { 613 /* skip task management functions, including tmr->task_cmd */ 614 if (secmd->se_cmd_flags & SCF_SCSI_TMR_CDB) 615 continue; 616 617 if (secmd->tag == tag) { 618 cmd = container_of(secmd, struct qla_tgt_cmd, se_cmd); 619 break; 620 } 621 } 622 spin_unlock_irqrestore(&sess->se_sess->sess_cmd_lock, flags); 623 624 return cmd; 625 } 626 627 static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd) 628 { 629 struct qla_tgt_cmd *cmd = container_of(se_cmd, 630 struct qla_tgt_cmd, se_cmd); 631 632 if (cmd->aborted) { 633 /* Cmd can loop during Q-full. tcm_qla2xxx_aborted_task 634 * can get ahead of this cmd. tcm_qla2xxx_aborted_task 635 * already kick start the free. 636 */ 637 pr_debug("queue_data_in aborted cmd[%p] refcount %d " 638 "transport_state %x, t_state %x, se_cmd_flags %x\n", 639 cmd, kref_read(&cmd->se_cmd.cmd_kref), 640 cmd->se_cmd.transport_state, 641 cmd->se_cmd.t_state, 642 cmd->se_cmd.se_cmd_flags); 643 return 0; 644 } 645 646 cmd->trc_flags |= TRC_XMIT_DATA; 647 cmd->bufflen = se_cmd->data_length; 648 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd); 649 650 cmd->sg_cnt = se_cmd->t_data_nents; 651 cmd->sg = se_cmd->t_data_sg; 652 cmd->offset = 0; 653 654 cmd->prot_sg_cnt = se_cmd->t_prot_nents; 655 cmd->prot_sg = se_cmd->t_prot_sg; 656 cmd->blk_sz = se_cmd->se_dev->dev_attrib.block_size; 657 se_cmd->pi_err = 0; 658 659 /* 660 * Now queue completed DATA_IN the qla2xxx LLD and response ring 661 */ 662 return qlt_xmit_response(cmd, QLA_TGT_XMIT_DATA|QLA_TGT_XMIT_STATUS, 663 se_cmd->scsi_status); 664 } 665 666 static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd) 667 { 668 struct qla_tgt_cmd *cmd = container_of(se_cmd, 669 struct qla_tgt_cmd, se_cmd); 670 int xmit_type = QLA_TGT_XMIT_STATUS; 671 672 if (cmd->aborted) { 673 /* 674 * Cmd can loop during Q-full. tcm_qla2xxx_aborted_task 675 * can get ahead of this cmd. tcm_qla2xxx_aborted_task 676 * already kick start the free. 677 */ 678 pr_debug( 679 "queue_data_in aborted cmd[%p] refcount %d transport_state %x, t_state %x, se_cmd_flags %x\n", 680 cmd, kref_read(&cmd->se_cmd.cmd_kref), 681 cmd->se_cmd.transport_state, cmd->se_cmd.t_state, 682 cmd->se_cmd.se_cmd_flags); 683 return 0; 684 } 685 cmd->bufflen = se_cmd->data_length; 686 cmd->sg = NULL; 687 cmd->sg_cnt = 0; 688 cmd->offset = 0; 689 cmd->dma_data_direction = target_reverse_dma_direction(se_cmd); 690 cmd->trc_flags |= TRC_XMIT_STATUS; 691 692 if (se_cmd->data_direction == DMA_FROM_DEVICE) { 693 /* 694 * For FCP_READ with CHECK_CONDITION status, clear cmd->bufflen 695 * for qla_tgt_xmit_response LLD code 696 */ 697 if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) { 698 se_cmd->se_cmd_flags &= ~SCF_OVERFLOW_BIT; 699 se_cmd->residual_count = 0; 700 } 701 se_cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT; 702 se_cmd->residual_count += se_cmd->data_length; 703 704 cmd->bufflen = 0; 705 } 706 /* 707 * Now queue status response to qla2xxx LLD code and response ring 708 */ 709 return qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status); 710 } 711 712 static void tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd) 713 { 714 struct se_tmr_req *se_tmr = se_cmd->se_tmr_req; 715 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd, 716 struct qla_tgt_mgmt_cmd, se_cmd); 717 718 pr_debug("queue_tm_rsp: mcmd: %p func: 0x%02x response: 0x%02x\n", 719 mcmd, se_tmr->function, se_tmr->response); 720 /* 721 * Do translation between TCM TM response codes and 722 * QLA2xxx FC TM response codes. 723 */ 724 switch (se_tmr->response) { 725 case TMR_FUNCTION_COMPLETE: 726 mcmd->fc_tm_rsp = FC_TM_SUCCESS; 727 break; 728 case TMR_TASK_DOES_NOT_EXIST: 729 mcmd->fc_tm_rsp = FC_TM_BAD_CMD; 730 break; 731 case TMR_FUNCTION_REJECTED: 732 mcmd->fc_tm_rsp = FC_TM_REJECT; 733 break; 734 case TMR_LUN_DOES_NOT_EXIST: 735 default: 736 mcmd->fc_tm_rsp = FC_TM_FAILED; 737 break; 738 } 739 /* 740 * Queue the TM response to QLA2xxx LLD to build a 741 * CTIO response packet. 742 */ 743 qlt_xmit_tm_rsp(mcmd); 744 } 745 746 static void tcm_qla2xxx_aborted_task(struct se_cmd *se_cmd) 747 { 748 struct qla_tgt_cmd *cmd = container_of(se_cmd, 749 struct qla_tgt_cmd, se_cmd); 750 751 if (qlt_abort_cmd(cmd)) 752 return; 753 } 754 755 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *, 756 struct tcm_qla2xxx_nacl *, struct fc_port *); 757 /* 758 * Expected to be called with struct qla_hw_data->tgt.sess_lock held 759 */ 760 static void tcm_qla2xxx_clear_nacl_from_fcport_map(struct fc_port *sess) 761 { 762 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl; 763 struct se_portal_group *se_tpg = se_nacl->se_tpg; 764 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn; 765 struct tcm_qla2xxx_lport *lport = container_of(se_wwn, 766 struct tcm_qla2xxx_lport, lport_wwn); 767 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl, 768 struct tcm_qla2xxx_nacl, se_node_acl); 769 void *node; 770 771 pr_debug("fc_rport domain: port_id 0x%06x\n", nacl->nport_id); 772 773 node = btree_remove32(&lport->lport_fcport_map, nacl->nport_id); 774 if (WARN_ON(node && (node != se_nacl))) { 775 /* 776 * The nacl no longer matches what we think it should be. 777 * Most likely a new dynamic acl has been added while 778 * someone dropped the hardware lock. It clearly is a 779 * bug elsewhere, but this bit can't make things worse. 780 */ 781 btree_insert32(&lport->lport_fcport_map, nacl->nport_id, 782 node, GFP_ATOMIC); 783 } 784 785 pr_debug("Removed from fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%06x\n", 786 se_nacl, nacl->nport_wwnn, nacl->nport_id); 787 /* 788 * Now clear the se_nacl and session pointers from our HW lport lookup 789 * table mapping for this initiator's fabric S_ID and LOOP_ID entries. 790 * 791 * This is done ahead of callbacks into tcm_qla2xxx_free_session() -> 792 * target_wait_for_sess_cmds() before the session waits for outstanding 793 * I/O to complete, to avoid a race between session shutdown execution 794 * and incoming ATIOs or TMRs picking up a stale se_node_act reference. 795 */ 796 tcm_qla2xxx_clear_sess_lookup(lport, nacl, sess); 797 } 798 799 static void tcm_qla2xxx_shutdown_sess(struct fc_port *sess) 800 { 801 target_sess_cmd_list_set_waiting(sess->se_sess); 802 } 803 804 static int tcm_qla2xxx_init_nodeacl(struct se_node_acl *se_nacl, 805 const char *name) 806 { 807 struct tcm_qla2xxx_nacl *nacl = 808 container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 809 u64 wwnn; 810 811 if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0) 812 return -EINVAL; 813 814 nacl->nport_wwnn = wwnn; 815 tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn); 816 817 return 0; 818 } 819 820 /* Start items for tcm_qla2xxx_tpg_attrib_cit */ 821 822 #define DEF_QLA_TPG_ATTRIB(name) \ 823 \ 824 static ssize_t tcm_qla2xxx_tpg_attrib_##name##_show( \ 825 struct config_item *item, char *page) \ 826 { \ 827 struct se_portal_group *se_tpg = attrib_to_tpg(item); \ 828 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \ 829 struct tcm_qla2xxx_tpg, se_tpg); \ 830 \ 831 return sprintf(page, "%u\n", tpg->tpg_attrib.name); \ 832 } \ 833 \ 834 static ssize_t tcm_qla2xxx_tpg_attrib_##name##_store( \ 835 struct config_item *item, const char *page, size_t count) \ 836 { \ 837 struct se_portal_group *se_tpg = attrib_to_tpg(item); \ 838 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \ 839 struct tcm_qla2xxx_tpg, se_tpg); \ 840 struct tcm_qla2xxx_tpg_attrib *a = &tpg->tpg_attrib; \ 841 unsigned long val; \ 842 int ret; \ 843 \ 844 ret = kstrtoul(page, 0, &val); \ 845 if (ret < 0) { \ 846 pr_err("kstrtoul() failed with" \ 847 " ret: %d\n", ret); \ 848 return -EINVAL; \ 849 } \ 850 \ 851 if ((val != 0) && (val != 1)) { \ 852 pr_err("Illegal boolean value %lu\n", val); \ 853 return -EINVAL; \ 854 } \ 855 \ 856 a->name = val; \ 857 \ 858 return count; \ 859 } \ 860 CONFIGFS_ATTR(tcm_qla2xxx_tpg_attrib_, name) 861 862 DEF_QLA_TPG_ATTRIB(generate_node_acls); 863 DEF_QLA_TPG_ATTRIB(cache_dynamic_acls); 864 DEF_QLA_TPG_ATTRIB(demo_mode_write_protect); 865 DEF_QLA_TPG_ATTRIB(prod_mode_write_protect); 866 DEF_QLA_TPG_ATTRIB(demo_mode_login_only); 867 #ifdef CONFIG_TCM_QLA2XXX_DEBUG 868 DEF_QLA_TPG_ATTRIB(jam_host); 869 #endif 870 871 static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = { 872 &tcm_qla2xxx_tpg_attrib_attr_generate_node_acls, 873 &tcm_qla2xxx_tpg_attrib_attr_cache_dynamic_acls, 874 &tcm_qla2xxx_tpg_attrib_attr_demo_mode_write_protect, 875 &tcm_qla2xxx_tpg_attrib_attr_prod_mode_write_protect, 876 &tcm_qla2xxx_tpg_attrib_attr_demo_mode_login_only, 877 #ifdef CONFIG_TCM_QLA2XXX_DEBUG 878 &tcm_qla2xxx_tpg_attrib_attr_jam_host, 879 #endif 880 NULL, 881 }; 882 883 /* End items for tcm_qla2xxx_tpg_attrib_cit */ 884 885 static ssize_t tcm_qla2xxx_tpg_enable_show(struct config_item *item, 886 char *page) 887 { 888 struct se_portal_group *se_tpg = to_tpg(item); 889 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 890 struct tcm_qla2xxx_tpg, se_tpg); 891 892 return snprintf(page, PAGE_SIZE, "%d\n", 893 atomic_read(&tpg->lport_tpg_enabled)); 894 } 895 896 static ssize_t tcm_qla2xxx_tpg_enable_store(struct config_item *item, 897 const char *page, size_t count) 898 { 899 struct se_portal_group *se_tpg = to_tpg(item); 900 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn; 901 struct tcm_qla2xxx_lport *lport = container_of(se_wwn, 902 struct tcm_qla2xxx_lport, lport_wwn); 903 struct scsi_qla_host *vha = lport->qla_vha; 904 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 905 struct tcm_qla2xxx_tpg, se_tpg); 906 unsigned long op; 907 int rc; 908 909 rc = kstrtoul(page, 0, &op); 910 if (rc < 0) { 911 pr_err("kstrtoul() returned %d\n", rc); 912 return -EINVAL; 913 } 914 if ((op != 1) && (op != 0)) { 915 pr_err("Illegal value for tpg_enable: %lu\n", op); 916 return -EINVAL; 917 } 918 if (op) { 919 if (atomic_read(&tpg->lport_tpg_enabled)) 920 return -EEXIST; 921 922 atomic_set(&tpg->lport_tpg_enabled, 1); 923 qlt_enable_vha(vha); 924 } else { 925 if (!atomic_read(&tpg->lport_tpg_enabled)) 926 return count; 927 928 atomic_set(&tpg->lport_tpg_enabled, 0); 929 qlt_stop_phase1(vha->vha_tgt.qla_tgt); 930 } 931 932 return count; 933 } 934 935 static ssize_t tcm_qla2xxx_tpg_dynamic_sessions_show(struct config_item *item, 936 char *page) 937 { 938 return target_show_dynamic_sessions(to_tpg(item), page); 939 } 940 941 static ssize_t tcm_qla2xxx_tpg_fabric_prot_type_store(struct config_item *item, 942 const char *page, size_t count) 943 { 944 struct se_portal_group *se_tpg = to_tpg(item); 945 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 946 struct tcm_qla2xxx_tpg, se_tpg); 947 unsigned long val; 948 int ret = kstrtoul(page, 0, &val); 949 950 if (ret) { 951 pr_err("kstrtoul() returned %d for fabric_prot_type\n", ret); 952 return ret; 953 } 954 if (val != 0 && val != 1 && val != 3) { 955 pr_err("Invalid qla2xxx fabric_prot_type: %lu\n", val); 956 return -EINVAL; 957 } 958 tpg->tpg_attrib.fabric_prot_type = val; 959 960 return count; 961 } 962 963 static ssize_t tcm_qla2xxx_tpg_fabric_prot_type_show(struct config_item *item, 964 char *page) 965 { 966 struct se_portal_group *se_tpg = to_tpg(item); 967 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 968 struct tcm_qla2xxx_tpg, se_tpg); 969 970 return sprintf(page, "%d\n", tpg->tpg_attrib.fabric_prot_type); 971 } 972 973 CONFIGFS_ATTR(tcm_qla2xxx_tpg_, enable); 974 CONFIGFS_ATTR_RO(tcm_qla2xxx_tpg_, dynamic_sessions); 975 CONFIGFS_ATTR(tcm_qla2xxx_tpg_, fabric_prot_type); 976 977 static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = { 978 &tcm_qla2xxx_tpg_attr_enable, 979 &tcm_qla2xxx_tpg_attr_dynamic_sessions, 980 &tcm_qla2xxx_tpg_attr_fabric_prot_type, 981 NULL, 982 }; 983 984 static struct se_portal_group *tcm_qla2xxx_make_tpg(struct se_wwn *wwn, 985 const char *name) 986 { 987 struct tcm_qla2xxx_lport *lport = container_of(wwn, 988 struct tcm_qla2xxx_lport, lport_wwn); 989 struct tcm_qla2xxx_tpg *tpg; 990 unsigned long tpgt; 991 int ret; 992 993 if (strstr(name, "tpgt_") != name) 994 return ERR_PTR(-EINVAL); 995 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX) 996 return ERR_PTR(-EINVAL); 997 998 if ((tpgt != 1)) { 999 pr_err("In non NPIV mode, a single TPG=1 is used for HW port mappings\n"); 1000 return ERR_PTR(-ENOSYS); 1001 } 1002 1003 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL); 1004 if (!tpg) { 1005 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n"); 1006 return ERR_PTR(-ENOMEM); 1007 } 1008 tpg->lport = lport; 1009 tpg->lport_tpgt = tpgt; 1010 /* 1011 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic 1012 * NodeACLs 1013 */ 1014 tpg->tpg_attrib.generate_node_acls = 1; 1015 tpg->tpg_attrib.demo_mode_write_protect = 1; 1016 tpg->tpg_attrib.cache_dynamic_acls = 1; 1017 tpg->tpg_attrib.demo_mode_login_only = 1; 1018 tpg->tpg_attrib.jam_host = 0; 1019 1020 ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP); 1021 if (ret < 0) { 1022 kfree(tpg); 1023 return NULL; 1024 } 1025 1026 lport->tpg_1 = tpg; 1027 1028 return &tpg->se_tpg; 1029 } 1030 1031 static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg) 1032 { 1033 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1034 struct tcm_qla2xxx_tpg, se_tpg); 1035 struct tcm_qla2xxx_lport *lport = tpg->lport; 1036 struct scsi_qla_host *vha = lport->qla_vha; 1037 /* 1038 * Call into qla2x_target.c LLD logic to shutdown the active 1039 * FC Nexuses and disable target mode operation for this qla_hw_data 1040 */ 1041 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stop) 1042 qlt_stop_phase1(vha->vha_tgt.qla_tgt); 1043 1044 core_tpg_deregister(se_tpg); 1045 /* 1046 * Clear local TPG=1 pointer for non NPIV mode. 1047 */ 1048 lport->tpg_1 = NULL; 1049 kfree(tpg); 1050 } 1051 1052 static ssize_t tcm_qla2xxx_npiv_tpg_enable_show(struct config_item *item, 1053 char *page) 1054 { 1055 return tcm_qla2xxx_tpg_enable_show(item, page); 1056 } 1057 1058 static ssize_t tcm_qla2xxx_npiv_tpg_enable_store(struct config_item *item, 1059 const char *page, size_t count) 1060 { 1061 struct se_portal_group *se_tpg = to_tpg(item); 1062 struct se_wwn *se_wwn = se_tpg->se_tpg_wwn; 1063 struct tcm_qla2xxx_lport *lport = container_of(se_wwn, 1064 struct tcm_qla2xxx_lport, lport_wwn); 1065 struct scsi_qla_host *vha = lport->qla_vha; 1066 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1067 struct tcm_qla2xxx_tpg, se_tpg); 1068 unsigned long op; 1069 int rc; 1070 1071 rc = kstrtoul(page, 0, &op); 1072 if (rc < 0) { 1073 pr_err("kstrtoul() returned %d\n", rc); 1074 return -EINVAL; 1075 } 1076 if ((op != 1) && (op != 0)) { 1077 pr_err("Illegal value for tpg_enable: %lu\n", op); 1078 return -EINVAL; 1079 } 1080 if (op) { 1081 if (atomic_read(&tpg->lport_tpg_enabled)) 1082 return -EEXIST; 1083 1084 atomic_set(&tpg->lport_tpg_enabled, 1); 1085 qlt_enable_vha(vha); 1086 } else { 1087 if (!atomic_read(&tpg->lport_tpg_enabled)) 1088 return count; 1089 1090 atomic_set(&tpg->lport_tpg_enabled, 0); 1091 qlt_stop_phase1(vha->vha_tgt.qla_tgt); 1092 } 1093 1094 return count; 1095 } 1096 1097 CONFIGFS_ATTR(tcm_qla2xxx_npiv_tpg_, enable); 1098 1099 static struct configfs_attribute *tcm_qla2xxx_npiv_tpg_attrs[] = { 1100 &tcm_qla2xxx_npiv_tpg_attr_enable, 1101 NULL, 1102 }; 1103 1104 static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg(struct se_wwn *wwn, 1105 const char *name) 1106 { 1107 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1108 struct tcm_qla2xxx_lport, lport_wwn); 1109 struct tcm_qla2xxx_tpg *tpg; 1110 unsigned long tpgt; 1111 int ret; 1112 1113 if (strstr(name, "tpgt_") != name) 1114 return ERR_PTR(-EINVAL); 1115 if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX) 1116 return ERR_PTR(-EINVAL); 1117 1118 tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL); 1119 if (!tpg) { 1120 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n"); 1121 return ERR_PTR(-ENOMEM); 1122 } 1123 tpg->lport = lport; 1124 tpg->lport_tpgt = tpgt; 1125 1126 /* 1127 * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic 1128 * NodeACLs 1129 */ 1130 tpg->tpg_attrib.generate_node_acls = 1; 1131 tpg->tpg_attrib.demo_mode_write_protect = 1; 1132 tpg->tpg_attrib.cache_dynamic_acls = 1; 1133 tpg->tpg_attrib.demo_mode_login_only = 1; 1134 1135 ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP); 1136 if (ret < 0) { 1137 kfree(tpg); 1138 return NULL; 1139 } 1140 lport->tpg_1 = tpg; 1141 return &tpg->se_tpg; 1142 } 1143 1144 /* 1145 * Expected to be called with struct qla_hw_data->tgt.sess_lock held 1146 */ 1147 static struct fc_port *tcm_qla2xxx_find_sess_by_s_id( 1148 scsi_qla_host_t *vha, 1149 const uint8_t *s_id) 1150 { 1151 struct tcm_qla2xxx_lport *lport; 1152 struct se_node_acl *se_nacl; 1153 struct tcm_qla2xxx_nacl *nacl; 1154 u32 key; 1155 1156 lport = vha->vha_tgt.target_lport_ptr; 1157 if (!lport) { 1158 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1159 dump_stack(); 1160 return NULL; 1161 } 1162 1163 key = sid_to_key(s_id); 1164 pr_debug("find_sess_by_s_id: 0x%06x\n", key); 1165 1166 se_nacl = btree_lookup32(&lport->lport_fcport_map, key); 1167 if (!se_nacl) { 1168 pr_debug("Unable to locate s_id: 0x%06x\n", key); 1169 return NULL; 1170 } 1171 pr_debug("find_sess_by_s_id: located se_nacl: %p, initiatorname: %s\n", 1172 se_nacl, se_nacl->initiatorname); 1173 1174 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1175 if (!nacl->fc_port) { 1176 pr_err("Unable to locate struct fc_port\n"); 1177 return NULL; 1178 } 1179 1180 return nacl->fc_port; 1181 } 1182 1183 /* 1184 * Expected to be called with struct qla_hw_data->tgt.sess_lock held 1185 */ 1186 static void tcm_qla2xxx_set_sess_by_s_id( 1187 struct tcm_qla2xxx_lport *lport, 1188 struct se_node_acl *new_se_nacl, 1189 struct tcm_qla2xxx_nacl *nacl, 1190 struct se_session *se_sess, 1191 struct fc_port *fc_port, 1192 uint8_t *s_id) 1193 { 1194 u32 key; 1195 void *slot; 1196 int rc; 1197 1198 key = sid_to_key(s_id); 1199 pr_debug("set_sess_by_s_id: %06x\n", key); 1200 1201 slot = btree_lookup32(&lport->lport_fcport_map, key); 1202 if (!slot) { 1203 if (new_se_nacl) { 1204 pr_debug("Setting up new fc_port entry to new_se_nacl\n"); 1205 nacl->nport_id = key; 1206 rc = btree_insert32(&lport->lport_fcport_map, key, 1207 new_se_nacl, GFP_ATOMIC); 1208 if (rc) 1209 printk(KERN_ERR "Unable to insert s_id into fcport_map: %06x\n", 1210 (int)key); 1211 } else { 1212 pr_debug("Wiping nonexisting fc_port entry\n"); 1213 } 1214 1215 fc_port->se_sess = se_sess; 1216 nacl->fc_port = fc_port; 1217 return; 1218 } 1219 1220 if (nacl->fc_port) { 1221 if (new_se_nacl == NULL) { 1222 pr_debug("Clearing existing nacl->fc_port and fc_port entry\n"); 1223 btree_remove32(&lport->lport_fcport_map, key); 1224 nacl->fc_port = NULL; 1225 return; 1226 } 1227 pr_debug("Replacing existing nacl->fc_port and fc_port entry\n"); 1228 btree_update32(&lport->lport_fcport_map, key, new_se_nacl); 1229 fc_port->se_sess = se_sess; 1230 nacl->fc_port = fc_port; 1231 return; 1232 } 1233 1234 if (new_se_nacl == NULL) { 1235 pr_debug("Clearing existing fc_port entry\n"); 1236 btree_remove32(&lport->lport_fcport_map, key); 1237 return; 1238 } 1239 1240 pr_debug("Replacing existing fc_port entry w/o active nacl->fc_port\n"); 1241 btree_update32(&lport->lport_fcport_map, key, new_se_nacl); 1242 fc_port->se_sess = se_sess; 1243 nacl->fc_port = fc_port; 1244 1245 pr_debug("Setup nacl->fc_port %p by s_id for se_nacl: %p, initiatorname: %s\n", 1246 nacl->fc_port, new_se_nacl, new_se_nacl->initiatorname); 1247 } 1248 1249 /* 1250 * Expected to be called with struct qla_hw_data->tgt.sess_lock held 1251 */ 1252 static struct fc_port *tcm_qla2xxx_find_sess_by_loop_id( 1253 scsi_qla_host_t *vha, 1254 const uint16_t loop_id) 1255 { 1256 struct tcm_qla2xxx_lport *lport; 1257 struct se_node_acl *se_nacl; 1258 struct tcm_qla2xxx_nacl *nacl; 1259 struct tcm_qla2xxx_fc_loopid *fc_loopid; 1260 1261 lport = vha->vha_tgt.target_lport_ptr; 1262 if (!lport) { 1263 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1264 dump_stack(); 1265 return NULL; 1266 } 1267 1268 pr_debug("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id); 1269 1270 fc_loopid = lport->lport_loopid_map + loop_id; 1271 se_nacl = fc_loopid->se_nacl; 1272 if (!se_nacl) { 1273 pr_debug("Unable to locate se_nacl by loop_id: 0x%04x\n", 1274 loop_id); 1275 return NULL; 1276 } 1277 1278 nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl); 1279 1280 if (!nacl->fc_port) { 1281 pr_err("Unable to locate struct fc_port\n"); 1282 return NULL; 1283 } 1284 1285 return nacl->fc_port; 1286 } 1287 1288 /* 1289 * Expected to be called with struct qla_hw_data->tgt.sess_lock held 1290 */ 1291 static void tcm_qla2xxx_set_sess_by_loop_id( 1292 struct tcm_qla2xxx_lport *lport, 1293 struct se_node_acl *new_se_nacl, 1294 struct tcm_qla2xxx_nacl *nacl, 1295 struct se_session *se_sess, 1296 struct fc_port *fc_port, 1297 uint16_t loop_id) 1298 { 1299 struct se_node_acl *saved_nacl; 1300 struct tcm_qla2xxx_fc_loopid *fc_loopid; 1301 1302 pr_debug("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id); 1303 1304 fc_loopid = &((struct tcm_qla2xxx_fc_loopid *) 1305 lport->lport_loopid_map)[loop_id]; 1306 1307 saved_nacl = fc_loopid->se_nacl; 1308 if (!saved_nacl) { 1309 pr_debug("Setting up new fc_loopid->se_nacl to new_se_nacl\n"); 1310 fc_loopid->se_nacl = new_se_nacl; 1311 if (fc_port->se_sess != se_sess) 1312 fc_port->se_sess = se_sess; 1313 if (nacl->fc_port != fc_port) 1314 nacl->fc_port = fc_port; 1315 return; 1316 } 1317 1318 if (nacl->fc_port) { 1319 if (new_se_nacl == NULL) { 1320 pr_debug("Clearing nacl->fc_port and fc_loopid->se_nacl\n"); 1321 fc_loopid->se_nacl = NULL; 1322 nacl->fc_port = NULL; 1323 return; 1324 } 1325 1326 pr_debug("Replacing existing nacl->fc_port and fc_loopid->se_nacl\n"); 1327 fc_loopid->se_nacl = new_se_nacl; 1328 if (fc_port->se_sess != se_sess) 1329 fc_port->se_sess = se_sess; 1330 if (nacl->fc_port != fc_port) 1331 nacl->fc_port = fc_port; 1332 return; 1333 } 1334 1335 if (new_se_nacl == NULL) { 1336 pr_debug("Clearing fc_loopid->se_nacl\n"); 1337 fc_loopid->se_nacl = NULL; 1338 return; 1339 } 1340 1341 pr_debug("Replacing existing fc_loopid->se_nacl w/o active nacl->fc_port\n"); 1342 fc_loopid->se_nacl = new_se_nacl; 1343 if (fc_port->se_sess != se_sess) 1344 fc_port->se_sess = se_sess; 1345 if (nacl->fc_port != fc_port) 1346 nacl->fc_port = fc_port; 1347 1348 pr_debug("Setup nacl->fc_port %p by loop_id for se_nacl: %p, initiatorname: %s\n", 1349 nacl->fc_port, new_se_nacl, new_se_nacl->initiatorname); 1350 } 1351 1352 /* 1353 * Should always be called with qla_hw_data->tgt.sess_lock held. 1354 */ 1355 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *lport, 1356 struct tcm_qla2xxx_nacl *nacl, struct fc_port *sess) 1357 { 1358 struct se_session *se_sess = sess->se_sess; 1359 unsigned char be_sid[3]; 1360 1361 be_sid[0] = sess->d_id.b.domain; 1362 be_sid[1] = sess->d_id.b.area; 1363 be_sid[2] = sess->d_id.b.al_pa; 1364 1365 tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess, 1366 sess, be_sid); 1367 tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess, 1368 sess, sess->loop_id); 1369 } 1370 1371 static void tcm_qla2xxx_free_session(struct fc_port *sess) 1372 { 1373 struct qla_tgt *tgt = sess->tgt; 1374 struct qla_hw_data *ha = tgt->ha; 1375 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev); 1376 struct se_session *se_sess; 1377 struct tcm_qla2xxx_lport *lport; 1378 1379 BUG_ON(in_interrupt()); 1380 1381 se_sess = sess->se_sess; 1382 if (!se_sess) { 1383 pr_err("struct fc_port->se_sess is NULL\n"); 1384 dump_stack(); 1385 return; 1386 } 1387 1388 lport = vha->vha_tgt.target_lport_ptr; 1389 if (!lport) { 1390 pr_err("Unable to locate struct tcm_qla2xxx_lport\n"); 1391 dump_stack(); 1392 return; 1393 } 1394 target_wait_for_sess_cmds(se_sess); 1395 1396 target_remove_session(se_sess); 1397 } 1398 1399 static int tcm_qla2xxx_session_cb(struct se_portal_group *se_tpg, 1400 struct se_session *se_sess, void *p) 1401 { 1402 struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, 1403 struct tcm_qla2xxx_tpg, se_tpg); 1404 struct tcm_qla2xxx_lport *lport = tpg->lport; 1405 struct qla_hw_data *ha = lport->qla_vha->hw; 1406 struct se_node_acl *se_nacl = se_sess->se_node_acl; 1407 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl, 1408 struct tcm_qla2xxx_nacl, se_node_acl); 1409 struct fc_port *qlat_sess = p; 1410 uint16_t loop_id = qlat_sess->loop_id; 1411 unsigned long flags; 1412 unsigned char be_sid[3]; 1413 1414 be_sid[0] = qlat_sess->d_id.b.domain; 1415 be_sid[1] = qlat_sess->d_id.b.area; 1416 be_sid[2] = qlat_sess->d_id.b.al_pa; 1417 1418 /* 1419 * And now setup se_nacl and session pointers into HW lport internal 1420 * mappings for fabric S_ID and LOOP_ID. 1421 */ 1422 spin_lock_irqsave(&ha->tgt.sess_lock, flags); 1423 tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl, 1424 se_sess, qlat_sess, be_sid); 1425 tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl, 1426 se_sess, qlat_sess, loop_id); 1427 spin_unlock_irqrestore(&ha->tgt.sess_lock, flags); 1428 1429 return 0; 1430 } 1431 1432 /* 1433 * Called via qlt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl() 1434 * to locate struct se_node_acl 1435 */ 1436 static int tcm_qla2xxx_check_initiator_node_acl( 1437 scsi_qla_host_t *vha, 1438 unsigned char *fc_wwpn, 1439 struct fc_port *qlat_sess) 1440 { 1441 struct qla_hw_data *ha = vha->hw; 1442 struct tcm_qla2xxx_lport *lport; 1443 struct tcm_qla2xxx_tpg *tpg; 1444 struct se_session *se_sess; 1445 unsigned char port_name[36]; 1446 int num_tags = (ha->cur_fw_xcb_count) ? ha->cur_fw_xcb_count : 1447 TCM_QLA2XXX_DEFAULT_TAGS; 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 -EINVAL; 1454 } 1455 /* 1456 * Locate the TPG=1 reference.. 1457 */ 1458 tpg = lport->tpg_1; 1459 if (!tpg) { 1460 pr_err("Unable to locate struct tcm_qla2xxx_lport->tpg_1\n"); 1461 return -EINVAL; 1462 } 1463 /* 1464 * Format the FCP Initiator port_name into colon seperated values to 1465 * match the format by tcm_qla2xxx explict ConfigFS NodeACLs. 1466 */ 1467 memset(&port_name, 0, 36); 1468 snprintf(port_name, sizeof(port_name), "%8phC", fc_wwpn); 1469 /* 1470 * Locate our struct se_node_acl either from an explict NodeACL created 1471 * via ConfigFS, or via running in TPG demo mode. 1472 */ 1473 se_sess = target_setup_session(&tpg->se_tpg, num_tags, 1474 sizeof(struct qla_tgt_cmd), 1475 TARGET_PROT_ALL, port_name, 1476 qlat_sess, tcm_qla2xxx_session_cb); 1477 if (IS_ERR(se_sess)) 1478 return PTR_ERR(se_sess); 1479 1480 return 0; 1481 } 1482 1483 static void tcm_qla2xxx_update_sess(struct fc_port *sess, port_id_t s_id, 1484 uint16_t loop_id, bool conf_compl_supported) 1485 { 1486 struct qla_tgt *tgt = sess->tgt; 1487 struct qla_hw_data *ha = tgt->ha; 1488 scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev); 1489 struct tcm_qla2xxx_lport *lport = vha->vha_tgt.target_lport_ptr; 1490 struct se_node_acl *se_nacl = sess->se_sess->se_node_acl; 1491 struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl, 1492 struct tcm_qla2xxx_nacl, se_node_acl); 1493 u32 key; 1494 1495 1496 if (sess->loop_id != loop_id || sess->d_id.b24 != s_id.b24) 1497 pr_info("Updating session %p from port %8phC loop_id %d -> %d s_id %x:%x:%x -> %x:%x:%x\n", 1498 sess, sess->port_name, 1499 sess->loop_id, loop_id, sess->d_id.b.domain, 1500 sess->d_id.b.area, sess->d_id.b.al_pa, s_id.b.domain, 1501 s_id.b.area, s_id.b.al_pa); 1502 1503 if (sess->loop_id != loop_id) { 1504 /* 1505 * Because we can shuffle loop IDs around and we 1506 * update different sessions non-atomically, we might 1507 * have overwritten this session's old loop ID 1508 * already, and we might end up overwriting some other 1509 * session that will be updated later. So we have to 1510 * be extra careful and we can't warn about those things... 1511 */ 1512 if (lport->lport_loopid_map[sess->loop_id].se_nacl == se_nacl) 1513 lport->lport_loopid_map[sess->loop_id].se_nacl = NULL; 1514 1515 lport->lport_loopid_map[loop_id].se_nacl = se_nacl; 1516 1517 sess->loop_id = loop_id; 1518 } 1519 1520 if (sess->d_id.b24 != s_id.b24) { 1521 key = (((u32) sess->d_id.b.domain << 16) | 1522 ((u32) sess->d_id.b.area << 8) | 1523 ((u32) sess->d_id.b.al_pa)); 1524 1525 if (btree_lookup32(&lport->lport_fcport_map, key)) 1526 WARN(btree_remove32(&lport->lport_fcport_map, key) != 1527 se_nacl, "Found wrong se_nacl when updating s_id %x:%x:%x\n", 1528 sess->d_id.b.domain, sess->d_id.b.area, 1529 sess->d_id.b.al_pa); 1530 else 1531 WARN(1, "No lport_fcport_map entry for s_id %x:%x:%x\n", 1532 sess->d_id.b.domain, sess->d_id.b.area, 1533 sess->d_id.b.al_pa); 1534 1535 key = (((u32) s_id.b.domain << 16) | 1536 ((u32) s_id.b.area << 8) | 1537 ((u32) s_id.b.al_pa)); 1538 1539 if (btree_lookup32(&lport->lport_fcport_map, key)) { 1540 WARN(1, "Already have lport_fcport_map entry for s_id %x:%x:%x\n", 1541 s_id.b.domain, s_id.b.area, s_id.b.al_pa); 1542 btree_update32(&lport->lport_fcport_map, key, se_nacl); 1543 } else { 1544 btree_insert32(&lport->lport_fcport_map, key, se_nacl, 1545 GFP_ATOMIC); 1546 } 1547 1548 sess->d_id = s_id; 1549 nacl->nport_id = key; 1550 } 1551 1552 sess->conf_compl_supported = conf_compl_supported; 1553 1554 } 1555 1556 /* 1557 * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path. 1558 */ 1559 static struct qla_tgt_func_tmpl tcm_qla2xxx_template = { 1560 .find_cmd_by_tag = tcm_qla2xxx_find_cmd_by_tag, 1561 .handle_cmd = tcm_qla2xxx_handle_cmd, 1562 .handle_data = tcm_qla2xxx_handle_data, 1563 .handle_tmr = tcm_qla2xxx_handle_tmr, 1564 .free_cmd = tcm_qla2xxx_free_cmd, 1565 .free_mcmd = tcm_qla2xxx_free_mcmd, 1566 .free_session = tcm_qla2xxx_free_session, 1567 .update_sess = tcm_qla2xxx_update_sess, 1568 .check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl, 1569 .find_sess_by_s_id = tcm_qla2xxx_find_sess_by_s_id, 1570 .find_sess_by_loop_id = tcm_qla2xxx_find_sess_by_loop_id, 1571 .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map, 1572 .put_sess = tcm_qla2xxx_put_sess, 1573 .shutdown_sess = tcm_qla2xxx_shutdown_sess, 1574 .get_dif_tags = tcm_qla2xxx_dif_tags, 1575 .chk_dif_tags = tcm_qla2xxx_chk_dif_tags, 1576 }; 1577 1578 static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport) 1579 { 1580 int rc; 1581 1582 rc = btree_init32(&lport->lport_fcport_map); 1583 if (rc) { 1584 pr_err("Unable to initialize lport->lport_fcport_map btree\n"); 1585 return rc; 1586 } 1587 1588 lport->lport_loopid_map = 1589 vzalloc(array_size(65536, 1590 sizeof(struct tcm_qla2xxx_fc_loopid))); 1591 if (!lport->lport_loopid_map) { 1592 pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n", 1593 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536); 1594 btree_destroy32(&lport->lport_fcport_map); 1595 return -ENOMEM; 1596 } 1597 pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n", 1598 sizeof(struct tcm_qla2xxx_fc_loopid) * 65536); 1599 return 0; 1600 } 1601 1602 static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha, 1603 void *target_lport_ptr, 1604 u64 npiv_wwpn, u64 npiv_wwnn) 1605 { 1606 struct qla_hw_data *ha = vha->hw; 1607 struct tcm_qla2xxx_lport *lport = 1608 (struct tcm_qla2xxx_lport *)target_lport_ptr; 1609 /* 1610 * Setup tgt_ops, local pointer to vha and target_lport_ptr 1611 */ 1612 ha->tgt.tgt_ops = &tcm_qla2xxx_template; 1613 vha->vha_tgt.target_lport_ptr = target_lport_ptr; 1614 lport->qla_vha = vha; 1615 1616 return 0; 1617 } 1618 1619 static struct se_wwn *tcm_qla2xxx_make_lport( 1620 struct target_fabric_configfs *tf, 1621 struct config_group *group, 1622 const char *name) 1623 { 1624 struct tcm_qla2xxx_lport *lport; 1625 u64 wwpn; 1626 int ret = -ENODEV; 1627 1628 if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0) 1629 return ERR_PTR(-EINVAL); 1630 1631 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL); 1632 if (!lport) { 1633 pr_err("Unable to allocate struct tcm_qla2xxx_lport\n"); 1634 return ERR_PTR(-ENOMEM); 1635 } 1636 lport->lport_wwpn = wwpn; 1637 tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN, 1638 wwpn); 1639 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) wwpn); 1640 1641 ret = tcm_qla2xxx_init_lport(lport); 1642 if (ret != 0) 1643 goto out; 1644 1645 ret = qlt_lport_register(lport, wwpn, 0, 0, 1646 tcm_qla2xxx_lport_register_cb); 1647 if (ret != 0) 1648 goto out_lport; 1649 1650 return &lport->lport_wwn; 1651 out_lport: 1652 vfree(lport->lport_loopid_map); 1653 btree_destroy32(&lport->lport_fcport_map); 1654 out: 1655 kfree(lport); 1656 return ERR_PTR(ret); 1657 } 1658 1659 static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn) 1660 { 1661 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1662 struct tcm_qla2xxx_lport, lport_wwn); 1663 struct scsi_qla_host *vha = lport->qla_vha; 1664 struct se_node_acl *node; 1665 u32 key = 0; 1666 1667 /* 1668 * Call into qla2x_target.c LLD logic to complete the 1669 * shutdown of struct qla_tgt after the call to 1670 * qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above.. 1671 */ 1672 if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stopped) 1673 qlt_stop_phase2(vha->vha_tgt.qla_tgt); 1674 1675 qlt_lport_deregister(vha); 1676 1677 vfree(lport->lport_loopid_map); 1678 btree_for_each_safe32(&lport->lport_fcport_map, key, node) 1679 btree_remove32(&lport->lport_fcport_map, key); 1680 btree_destroy32(&lport->lport_fcport_map); 1681 kfree(lport); 1682 } 1683 1684 static int tcm_qla2xxx_lport_register_npiv_cb(struct scsi_qla_host *base_vha, 1685 void *target_lport_ptr, 1686 u64 npiv_wwpn, u64 npiv_wwnn) 1687 { 1688 struct fc_vport *vport; 1689 struct Scsi_Host *sh = base_vha->host; 1690 struct scsi_qla_host *npiv_vha; 1691 struct tcm_qla2xxx_lport *lport = 1692 (struct tcm_qla2xxx_lport *)target_lport_ptr; 1693 struct tcm_qla2xxx_lport *base_lport = 1694 (struct tcm_qla2xxx_lport *)base_vha->vha_tgt.target_lport_ptr; 1695 struct fc_vport_identifiers vport_id; 1696 1697 if (qla_ini_mode_enabled(base_vha)) { 1698 pr_err("qla2xxx base_vha not enabled for target mode\n"); 1699 return -EPERM; 1700 } 1701 1702 if (!base_lport || !base_lport->tpg_1 || 1703 !atomic_read(&base_lport->tpg_1->lport_tpg_enabled)) { 1704 pr_err("qla2xxx base_lport or tpg_1 not available\n"); 1705 return -EPERM; 1706 } 1707 1708 memset(&vport_id, 0, sizeof(vport_id)); 1709 vport_id.port_name = npiv_wwpn; 1710 vport_id.node_name = npiv_wwnn; 1711 vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR; 1712 vport_id.vport_type = FC_PORTTYPE_NPIV; 1713 vport_id.disable = false; 1714 1715 vport = fc_vport_create(sh, 0, &vport_id); 1716 if (!vport) { 1717 pr_err("fc_vport_create failed for qla2xxx_npiv\n"); 1718 return -ENODEV; 1719 } 1720 /* 1721 * Setup local pointer to NPIV vhba + target_lport_ptr 1722 */ 1723 npiv_vha = (struct scsi_qla_host *)vport->dd_data; 1724 npiv_vha->vha_tgt.target_lport_ptr = target_lport_ptr; 1725 lport->qla_vha = npiv_vha; 1726 scsi_host_get(npiv_vha->host); 1727 return 0; 1728 } 1729 1730 1731 static struct se_wwn *tcm_qla2xxx_npiv_make_lport( 1732 struct target_fabric_configfs *tf, 1733 struct config_group *group, 1734 const char *name) 1735 { 1736 struct tcm_qla2xxx_lport *lport; 1737 u64 phys_wwpn, npiv_wwpn, npiv_wwnn; 1738 char *p, tmp[128]; 1739 int ret; 1740 1741 snprintf(tmp, 128, "%s", name); 1742 1743 p = strchr(tmp, '@'); 1744 if (!p) { 1745 pr_err("Unable to locate NPIV '@' separator\n"); 1746 return ERR_PTR(-EINVAL); 1747 } 1748 *p++ = '\0'; 1749 1750 if (tcm_qla2xxx_parse_wwn(tmp, &phys_wwpn, 1) < 0) 1751 return ERR_PTR(-EINVAL); 1752 1753 if (tcm_qla2xxx_npiv_parse_wwn(p, strlen(p)+1, 1754 &npiv_wwpn, &npiv_wwnn) < 0) 1755 return ERR_PTR(-EINVAL); 1756 1757 lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL); 1758 if (!lport) { 1759 pr_err("Unable to allocate struct tcm_qla2xxx_lport for NPIV\n"); 1760 return ERR_PTR(-ENOMEM); 1761 } 1762 lport->lport_npiv_wwpn = npiv_wwpn; 1763 lport->lport_npiv_wwnn = npiv_wwnn; 1764 sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) npiv_wwpn); 1765 1766 ret = tcm_qla2xxx_init_lport(lport); 1767 if (ret != 0) 1768 goto out; 1769 1770 ret = qlt_lport_register(lport, phys_wwpn, npiv_wwpn, npiv_wwnn, 1771 tcm_qla2xxx_lport_register_npiv_cb); 1772 if (ret != 0) 1773 goto out_lport; 1774 1775 return &lport->lport_wwn; 1776 out_lport: 1777 vfree(lport->lport_loopid_map); 1778 btree_destroy32(&lport->lport_fcport_map); 1779 out: 1780 kfree(lport); 1781 return ERR_PTR(ret); 1782 } 1783 1784 static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn) 1785 { 1786 struct tcm_qla2xxx_lport *lport = container_of(wwn, 1787 struct tcm_qla2xxx_lport, lport_wwn); 1788 struct scsi_qla_host *npiv_vha = lport->qla_vha; 1789 struct qla_hw_data *ha = npiv_vha->hw; 1790 scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev); 1791 1792 scsi_host_put(npiv_vha->host); 1793 /* 1794 * Notify libfc that we want to release the vha->fc_vport 1795 */ 1796 fc_vport_terminate(npiv_vha->fc_vport); 1797 scsi_host_put(base_vha->host); 1798 kfree(lport); 1799 } 1800 1801 1802 static ssize_t tcm_qla2xxx_wwn_version_show(struct config_item *item, 1803 char *page) 1804 { 1805 return sprintf(page, 1806 "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s on %s\n", 1807 QLA2XXX_VERSION, utsname()->sysname, 1808 utsname()->machine, utsname()->release); 1809 } 1810 1811 CONFIGFS_ATTR_RO(tcm_qla2xxx_wwn_, version); 1812 1813 static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = { 1814 &tcm_qla2xxx_wwn_attr_version, 1815 NULL, 1816 }; 1817 1818 static const struct target_core_fabric_ops tcm_qla2xxx_ops = { 1819 .module = THIS_MODULE, 1820 .fabric_name = "qla2xxx", 1821 .node_acl_size = sizeof(struct tcm_qla2xxx_nacl), 1822 /* 1823 * XXX: Limit assumes single page per scatter-gather-list entry. 1824 * Current maximum is ~4.9 MB per se_cmd->t_data_sg with PAGE_SIZE=4096 1825 */ 1826 .max_data_sg_nents = 1200, 1827 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn, 1828 .tpg_get_tag = tcm_qla2xxx_get_tag, 1829 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode, 1830 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache, 1831 .tpg_check_demo_mode_write_protect = 1832 tcm_qla2xxx_check_demo_write_protect, 1833 .tpg_check_prod_mode_write_protect = 1834 tcm_qla2xxx_check_prod_write_protect, 1835 .tpg_check_prot_fabric_only = tcm_qla2xxx_check_prot_fabric_only, 1836 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only, 1837 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index, 1838 .check_stop_free = tcm_qla2xxx_check_stop_free, 1839 .release_cmd = tcm_qla2xxx_release_cmd, 1840 .close_session = tcm_qla2xxx_close_session, 1841 .sess_get_index = tcm_qla2xxx_sess_get_index, 1842 .sess_get_initiator_sid = NULL, 1843 .write_pending = tcm_qla2xxx_write_pending, 1844 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs, 1845 .get_cmd_state = tcm_qla2xxx_get_cmd_state, 1846 .queue_data_in = tcm_qla2xxx_queue_data_in, 1847 .queue_status = tcm_qla2xxx_queue_status, 1848 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp, 1849 .aborted_task = tcm_qla2xxx_aborted_task, 1850 /* 1851 * Setup function pointers for generic logic in 1852 * target_core_fabric_configfs.c 1853 */ 1854 .fabric_make_wwn = tcm_qla2xxx_make_lport, 1855 .fabric_drop_wwn = tcm_qla2xxx_drop_lport, 1856 .fabric_make_tpg = tcm_qla2xxx_make_tpg, 1857 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg, 1858 .fabric_init_nodeacl = tcm_qla2xxx_init_nodeacl, 1859 1860 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs, 1861 .tfc_tpg_base_attrs = tcm_qla2xxx_tpg_attrs, 1862 .tfc_tpg_attrib_attrs = tcm_qla2xxx_tpg_attrib_attrs, 1863 }; 1864 1865 static const struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = { 1866 .module = THIS_MODULE, 1867 .fabric_name = "qla2xxx_npiv", 1868 .node_acl_size = sizeof(struct tcm_qla2xxx_nacl), 1869 .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn, 1870 .tpg_get_tag = tcm_qla2xxx_get_tag, 1871 .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode, 1872 .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache, 1873 .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_demo_mode, 1874 .tpg_check_prod_mode_write_protect = 1875 tcm_qla2xxx_check_prod_write_protect, 1876 .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only, 1877 .tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index, 1878 .check_stop_free = tcm_qla2xxx_check_stop_free, 1879 .release_cmd = tcm_qla2xxx_release_cmd, 1880 .close_session = tcm_qla2xxx_close_session, 1881 .sess_get_index = tcm_qla2xxx_sess_get_index, 1882 .sess_get_initiator_sid = NULL, 1883 .write_pending = tcm_qla2xxx_write_pending, 1884 .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs, 1885 .get_cmd_state = tcm_qla2xxx_get_cmd_state, 1886 .queue_data_in = tcm_qla2xxx_queue_data_in, 1887 .queue_status = tcm_qla2xxx_queue_status, 1888 .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp, 1889 .aborted_task = tcm_qla2xxx_aborted_task, 1890 /* 1891 * Setup function pointers for generic logic in 1892 * target_core_fabric_configfs.c 1893 */ 1894 .fabric_make_wwn = tcm_qla2xxx_npiv_make_lport, 1895 .fabric_drop_wwn = tcm_qla2xxx_npiv_drop_lport, 1896 .fabric_make_tpg = tcm_qla2xxx_npiv_make_tpg, 1897 .fabric_drop_tpg = tcm_qla2xxx_drop_tpg, 1898 .fabric_init_nodeacl = tcm_qla2xxx_init_nodeacl, 1899 1900 .tfc_wwn_attrs = tcm_qla2xxx_wwn_attrs, 1901 .tfc_tpg_base_attrs = tcm_qla2xxx_npiv_tpg_attrs, 1902 }; 1903 1904 static int tcm_qla2xxx_register_configfs(void) 1905 { 1906 int ret; 1907 1908 pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on %s\n", 1909 QLA2XXX_VERSION, utsname()->sysname, 1910 utsname()->machine, utsname()->release); 1911 1912 ret = target_register_template(&tcm_qla2xxx_ops); 1913 if (ret) 1914 return ret; 1915 1916 ret = target_register_template(&tcm_qla2xxx_npiv_ops); 1917 if (ret) 1918 goto out_fabric; 1919 1920 tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free", 1921 WQ_MEM_RECLAIM, 0); 1922 if (!tcm_qla2xxx_free_wq) { 1923 ret = -ENOMEM; 1924 goto out_fabric_npiv; 1925 } 1926 1927 return 0; 1928 1929 out_fabric_npiv: 1930 target_unregister_template(&tcm_qla2xxx_npiv_ops); 1931 out_fabric: 1932 target_unregister_template(&tcm_qla2xxx_ops); 1933 return ret; 1934 } 1935 1936 static void tcm_qla2xxx_deregister_configfs(void) 1937 { 1938 destroy_workqueue(tcm_qla2xxx_free_wq); 1939 1940 target_unregister_template(&tcm_qla2xxx_ops); 1941 target_unregister_template(&tcm_qla2xxx_npiv_ops); 1942 } 1943 1944 static int __init tcm_qla2xxx_init(void) 1945 { 1946 int ret; 1947 1948 ret = tcm_qla2xxx_register_configfs(); 1949 if (ret < 0) 1950 return ret; 1951 1952 return 0; 1953 } 1954 1955 static void __exit tcm_qla2xxx_exit(void) 1956 { 1957 tcm_qla2xxx_deregister_configfs(); 1958 } 1959 1960 MODULE_DESCRIPTION("TCM QLA24XX+ series NPIV enabled fabric driver"); 1961 MODULE_LICENSE("GPL"); 1962 module_init(tcm_qla2xxx_init); 1963 module_exit(tcm_qla2xxx_exit); 1964