drivers/scsi/qla2xxx/tcm_qla2xxx.c

   1 /*******************************************************************************
   2  * This file contains tcm implementation using v4 configfs fabric infrastructure
   3  * for QLogic target mode HBAs
   4  *
   5  * ?? Copyright 2010-2011 RisingTide Systems LLC.
   6  *
   7  * Licensed to the Linux Foundation under the General Public License (GPL)
   8  * version 2.
   9  *
  10  * Author: Nicholas A. Bellinger <nab@risingtidesystems.com>
  11  *
  12  * tcm_qla2xxx_parse_wwn() and tcm_qla2xxx_format_wwn() contains code from
  13  * the TCM_FC / Open-FCoE.org fabric module.
  14  *
  15  * Copyright (c) 2010 Cisco Systems, Inc
  16  *
  17  * This program is free software; you can redistribute it and/or modify
  18  * it under the terms of the GNU General Public License as published by
  19  * the Free Software Foundation; either version 2 of the License, or
  20  * (at your option) any later version.
  21  *
  22  * This program is distributed in the hope that it will be useful,
  23  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  24  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  25  * GNU General Public License for more details.
  26  ****************************************************************************/
  27
  28
  29 #include <linux/module.h>
  30 #include <linux/moduleparam.h>
  31 #include <generated/utsrelease.h>
  32 #include <linux/utsname.h>
  33 #include <linux/init.h>
  34 #include <linux/list.h>
  35 #include <linux/slab.h>
  36 #include <linux/kthread.h>
  37 #include <linux/types.h>
  38 #include <linux/string.h>
  39 #include <linux/configfs.h>
  40 #include <linux/ctype.h>
  41 #include <linux/string.h>
  42 #include <linux/ctype.h>
  43 #include <asm/unaligned.h>
  44 #include <scsi/scsi.h>
  45 #include <scsi/scsi_host.h>
  46 #include <scsi/scsi_device.h>
  47 #include <scsi/scsi_cmnd.h>
  48 #include <target/target_core_base.h>
  49 #include <target/target_core_fabric.h>
  50 #include <target/target_core_fabric_configfs.h>
  51 #include <target/target_core_configfs.h>
  52 #include <target/configfs_macros.h>
  53
  54 #include "qla_def.h"
  55 #include "qla_target.h"
  56 #include "tcm_qla2xxx.h"
  57
  58 struct workqueue_struct *tcm_qla2xxx_free_wq;
  59 struct workqueue_struct *tcm_qla2xxx_cmd_wq;
  60
  61 static int tcm_qla2xxx_check_true(struct se_portal_group *se_tpg)
  62 {
  63         return 1;
  64 }
  65
  66 static int tcm_qla2xxx_check_false(struct se_portal_group *se_tpg)
  67 {
  68         return 0;
  69 }
  70
  71 /*
  72  * Parse WWN.
  73  * If strict, we require lower-case hex and colon separators to be sure
  74  * the name is the same as what would be generated by ft_format_wwn()
  75  * so the name and wwn are mapped one-to-one.
  76  */
  77 static ssize_t tcm_qla2xxx_parse_wwn(const char *name, u64 *wwn, int strict)
  78 {
  79         const char *cp;
  80         char c;
  81         u32 nibble;
  82         u32 byte = 0;
  83         u32 pos = 0;
  84         u32 err;
  85
  86         *wwn = 0;
  87         for (cp = name; cp < &name[TCM_QLA2XXX_NAMELEN - 1]; cp++) {
  88                 c = *cp;
  89                 if (c == '\n' && cp[1] == '\0')
  90                         continue;
  91                 if (strict && pos++ == 2 && byte++ < 7) {
  92                         pos = 0;
  93                         if (c == ':')
  94                                 continue;
  95                         err = 1;
  96                         goto fail;
  97                 }
  98                 if (c == '\0') {
  99                         err = 2;
 100                         if (strict && byte != 8)
 101                                 goto fail;
 102                         return cp - name;
 103                 }
 104                 err = 3;
 105                 if (isdigit(c))
 106                         nibble = c - '0';
 107                 else if (isxdigit(c) && (islower(c) || !strict))
 108                         nibble = tolower(c) - 'a' + 10;
 109                 else
 110                         goto fail;
 111                 *wwn = (*wwn << 4) | nibble;
 112         }
 113         err = 4;
 114 fail:
 115         pr_debug("err %u len %zu pos %u byte %u\n",
 116                         err, cp - name, pos, byte);
 117         return -1;
 118 }
 119
 120 static ssize_t tcm_qla2xxx_format_wwn(char *buf, size_t len, u64 wwn)
 121 {
 122         u8 b[8];
 123
 124         put_unaligned_be64(wwn, b);
 125         return snprintf(buf, len,
 126                 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x",
 127                 b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7]);
 128 }
 129
 130 static char *tcm_qla2xxx_get_fabric_name(void)
 131 {
 132         return "qla2xxx";
 133 }
 134
 135 /*
 136  * From drivers/scsi/scsi_transport_fc.c:fc_parse_wwn
 137  */
 138 static int tcm_qla2xxx_npiv_extract_wwn(const char *ns, u64 *nm)
 139 {
 140         unsigned int i, j, value;
 141         u8 wwn[8];
 142
 143         memset(wwn, 0, sizeof(wwn));
 144
 145         /* Validate and store the new name */
 146         for (i = 0, j = 0; i < 16; i++) {
 147                 value = hex_to_bin(*ns++);
 148                 if (value >= 0)
 149                         j = (j << 4) | value;
 150                 else
 151                         return -EINVAL;
 152
 153                 if (i % 2) {
 154                         wwn[i/2] = j & 0xff;
 155                         j = 0;
 156                 }
 157         }
 158
 159         *nm = wwn_to_u64(wwn);
 160         return 0;
 161 }
 162
 163 /*
 164  * This parsing logic follows drivers/scsi/scsi_transport_fc.c:
 165  * store_fc_host_vport_create()
 166  */
 167 static int tcm_qla2xxx_npiv_parse_wwn(
 168         const char *name,
 169         size_t count,
 170         u64 *wwpn,
 171         u64 *wwnn)
 172 {
 173         unsigned int cnt = count;
 174         int rc;
 175
 176         *wwpn = 0;
 177         *wwnn = 0;
 178
 179         /* count may include a LF at end of string */
 180         if (name[cnt-1] == '\n')
 181                 cnt--;
 182
 183         /* validate we have enough characters for WWPN */
 184         if ((cnt != (16+1+16)) || (name[16] != ':'))
 185                 return -EINVAL;
 186
 187         rc = tcm_qla2xxx_npiv_extract_wwn(&name[0], wwpn);
 188         if (rc != 0)
 189                 return rc;
 190
 191         rc = tcm_qla2xxx_npiv_extract_wwn(&name[17], wwnn);
 192         if (rc != 0)
 193                 return rc;
 194
 195         return 0;
 196 }
 197
 198 static ssize_t tcm_qla2xxx_npiv_format_wwn(char *buf, size_t len,
 199                                         u64 wwpn, u64 wwnn)
 200 {
 201         u8 b[8], b2[8];
 202
 203         put_unaligned_be64(wwpn, b);
 204         put_unaligned_be64(wwnn, b2);
 205         return snprintf(buf, len,
 206                 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x,"
 207                 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x",
 208                 b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7],
 209                 b2[0], b2[1], b2[2], b2[3], b2[4], b2[5], b2[6], b2[7]);
 210 }
 211
 212 static char *tcm_qla2xxx_npiv_get_fabric_name(void)
 213 {
 214         return "qla2xxx_npiv";
 215 }
 216
 217 static u8 tcm_qla2xxx_get_fabric_proto_ident(struct se_portal_group *se_tpg)
 218 {
 219         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 220                                 struct tcm_qla2xxx_tpg, se_tpg);
 221         struct tcm_qla2xxx_lport *lport = tpg->lport;
 222         u8 proto_id;
 223
 224         switch (lport->lport_proto_id) {
 225         case SCSI_PROTOCOL_FCP:
 226         default:
 227                 proto_id = fc_get_fabric_proto_ident(se_tpg);
 228                 break;
 229         }
 230
 231         return proto_id;
 232 }
 233
 234 static char *tcm_qla2xxx_get_fabric_wwn(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         struct tcm_qla2xxx_lport *lport = tpg->lport;
 239
 240         return &lport->lport_name[0];
 241 }
 242
 243 static char *tcm_qla2xxx_npiv_get_fabric_wwn(struct se_portal_group *se_tpg)
 244 {
 245         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 246                                 struct tcm_qla2xxx_tpg, se_tpg);
 247         struct tcm_qla2xxx_lport *lport = tpg->lport;
 248
 249         return &lport->lport_npiv_name[0];
 250 }
 251
 252 static u16 tcm_qla2xxx_get_tag(struct se_portal_group *se_tpg)
 253 {
 254         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 255                                 struct tcm_qla2xxx_tpg, se_tpg);
 256         return tpg->lport_tpgt;
 257 }
 258
 259 static u32 tcm_qla2xxx_get_default_depth(struct se_portal_group *se_tpg)
 260 {
 261         return 1;
 262 }
 263
 264 static u32 tcm_qla2xxx_get_pr_transport_id(
 265         struct se_portal_group *se_tpg,
 266         struct se_node_acl *se_nacl,
 267         struct t10_pr_registration *pr_reg,
 268         int *format_code,
 269         unsigned char *buf)
 270 {
 271         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 272                                 struct tcm_qla2xxx_tpg, se_tpg);
 273         struct tcm_qla2xxx_lport *lport = tpg->lport;
 274         int ret = 0;
 275
 276         switch (lport->lport_proto_id) {
 277         case SCSI_PROTOCOL_FCP:
 278         default:
 279                 ret = fc_get_pr_transport_id(se_tpg, se_nacl, pr_reg,
 280                                         format_code, buf);
 281                 break;
 282         }
 283
 284         return ret;
 285 }
 286
 287 static u32 tcm_qla2xxx_get_pr_transport_id_len(
 288         struct se_portal_group *se_tpg,
 289         struct se_node_acl *se_nacl,
 290         struct t10_pr_registration *pr_reg,
 291         int *format_code)
 292 {
 293         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 294                                 struct tcm_qla2xxx_tpg, se_tpg);
 295         struct tcm_qla2xxx_lport *lport = tpg->lport;
 296         int ret = 0;
 297
 298         switch (lport->lport_proto_id) {
 299         case SCSI_PROTOCOL_FCP:
 300         default:
 301                 ret = fc_get_pr_transport_id_len(se_tpg, se_nacl, pr_reg,
 302                                         format_code);
 303                 break;
 304         }
 305
 306         return ret;
 307 }
 308
 309 static char *tcm_qla2xxx_parse_pr_out_transport_id(
 310         struct se_portal_group *se_tpg,
 311         const char *buf,
 312         u32 *out_tid_len,
 313         char **port_nexus_ptr)
 314 {
 315         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 316                                 struct tcm_qla2xxx_tpg, se_tpg);
 317         struct tcm_qla2xxx_lport *lport = tpg->lport;
 318         char *tid = NULL;
 319
 320         switch (lport->lport_proto_id) {
 321         case SCSI_PROTOCOL_FCP:
 322         default:
 323                 tid = fc_parse_pr_out_transport_id(se_tpg, buf, out_tid_len,
 324                                         port_nexus_ptr);
 325                 break;
 326         }
 327
 328         return tid;
 329 }
 330
 331 static int tcm_qla2xxx_check_demo_mode(struct se_portal_group *se_tpg)
 332 {
 333         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 334                                 struct tcm_qla2xxx_tpg, se_tpg);
 335
 336         return QLA_TPG_ATTRIB(tpg)->generate_node_acls;
 337 }
 338
 339 static int tcm_qla2xxx_check_demo_mode_cache(struct se_portal_group *se_tpg)
 340 {
 341         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 342                                 struct tcm_qla2xxx_tpg, se_tpg);
 343
 344         return QLA_TPG_ATTRIB(tpg)->cache_dynamic_acls;
 345 }
 346
 347 static int tcm_qla2xxx_check_demo_write_protect(struct se_portal_group *se_tpg)
 348 {
 349         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 350                                 struct tcm_qla2xxx_tpg, se_tpg);
 351
 352         return QLA_TPG_ATTRIB(tpg)->demo_mode_write_protect;
 353 }
 354
 355 static int tcm_qla2xxx_check_prod_write_protect(struct se_portal_group *se_tpg)
 356 {
 357         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 358                                 struct tcm_qla2xxx_tpg, se_tpg);
 359
 360         return QLA_TPG_ATTRIB(tpg)->prod_mode_write_protect;
 361 }
 362
 363 static struct se_node_acl *tcm_qla2xxx_alloc_fabric_acl(
 364         struct se_portal_group *se_tpg)
 365 {
 366         struct tcm_qla2xxx_nacl *nacl;
 367
 368         nacl = kzalloc(sizeof(struct tcm_qla2xxx_nacl), GFP_KERNEL);
 369         if (!nacl) {
 370                 pr_err("Unable to alocate struct tcm_qla2xxx_nacl\n");
 371                 return NULL;
 372         }
 373
 374         return &nacl->se_node_acl;
 375 }
 376
 377 static void tcm_qla2xxx_release_fabric_acl(
 378         struct se_portal_group *se_tpg,
 379         struct se_node_acl *se_nacl)
 380 {
 381         struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
 382                         struct tcm_qla2xxx_nacl, se_node_acl);
 383         kfree(nacl);
 384 }
 385
 386 static u32 tcm_qla2xxx_tpg_get_inst_index(struct se_portal_group *se_tpg)
 387 {
 388         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 389                                 struct tcm_qla2xxx_tpg, se_tpg);
 390
 391         return tpg->lport_tpgt;
 392 }
 393
 394 static void tcm_qla2xxx_complete_mcmd(struct work_struct *work)
 395 {
 396         struct qla_tgt_mgmt_cmd *mcmd = container_of(work,
 397                         struct qla_tgt_mgmt_cmd, free_work);
 398
 399         transport_generic_free_cmd(&mcmd->se_cmd, 0);
 400 }
 401
 402 /*
 403  * Called from qla_target_template->free_mcmd(), and will call
 404  * tcm_qla2xxx_release_cmd() via normal struct target_core_fabric_ops
 405  * release callback.  qla_hw_data->hardware_lock is expected to be held
 406  */
 407 static void tcm_qla2xxx_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
 408 {
 409         INIT_WORK(&mcmd->free_work, tcm_qla2xxx_complete_mcmd);
 410         queue_work(tcm_qla2xxx_free_wq, &mcmd->free_work);
 411 }
 412
 413 static void tcm_qla2xxx_complete_free(struct work_struct *work)
 414 {
 415         struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
 416
 417         transport_generic_free_cmd(&cmd->se_cmd, 0);
 418 }
 419
 420 /*
 421  * Called from qla_target_template->free_cmd(), and will call
 422  * tcm_qla2xxx_release_cmd via normal struct target_core_fabric_ops
 423  * release callback.  qla_hw_data->hardware_lock is expected to be held
 424  */
 425 static void tcm_qla2xxx_free_cmd(struct qla_tgt_cmd *cmd)
 426 {
 427         INIT_WORK(&cmd->work, tcm_qla2xxx_complete_free);
 428         queue_work(tcm_qla2xxx_free_wq, &cmd->work);
 429 }
 430
 431 /*
 432  * Called from struct target_core_fabric_ops->check_stop_free() context
 433  */
 434 static int tcm_qla2xxx_check_stop_free(struct se_cmd *se_cmd)
 435 {
 436         return target_put_sess_cmd(se_cmd->se_sess, se_cmd);
 437 }
 438
 439 /* tcm_qla2xxx_release_cmd - Callback from TCM Core to release underlying
 440  * fabric descriptor @se_cmd command to release
 441  */
 442 static void tcm_qla2xxx_release_cmd(struct se_cmd *se_cmd)
 443 {
 444         struct qla_tgt_cmd *cmd;
 445
 446         if (se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) {
 447                 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
 448                                 struct qla_tgt_mgmt_cmd, se_cmd);
 449                 qlt_free_mcmd(mcmd);
 450                 return;
 451         }
 452
 453         cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
 454         qlt_free_cmd(cmd);
 455 }
 456
 457 static int tcm_qla2xxx_shutdown_session(struct se_session *se_sess)
 458 {
 459         struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
 460         struct scsi_qla_host *vha;
 461         unsigned long flags;
 462
 463         BUG_ON(!sess);
 464         vha = sess->vha;
 465
 466         spin_lock_irqsave(&vha->hw->hardware_lock, flags);
 467         sess->tearing_down = 1;
 468         target_splice_sess_cmd_list(se_sess);
 469         spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
 470
 471         return 1;
 472 }
 473
 474 static void tcm_qla2xxx_close_session(struct se_session *se_sess)
 475 {
 476         struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
 477         struct scsi_qla_host *vha;
 478         unsigned long flags;
 479
 480         BUG_ON(!sess);
 481         vha = sess->vha;
 482
 483         spin_lock_irqsave(&vha->hw->hardware_lock, flags);
 484         qlt_unreg_sess(sess);
 485         spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
 486 }
 487
 488 static u32 tcm_qla2xxx_sess_get_index(struct se_session *se_sess)
 489 {
 490         return 0;
 491 }
 492
 493 /*
 494  * The LIO target core uses DMA_TO_DEVICE to mean that data is going
 495  * to the target (eg handling a WRITE) and DMA_FROM_DEVICE to mean
 496  * that data is coming from the target (eg handling a READ).  However,
 497  * this is just the opposite of what we have to tell the DMA mapping
 498  * layer -- eg when handling a READ, the HBA will have to DMA the data
 499  * out of memory so it can send it to the initiator, which means we
 500  * need to use DMA_TO_DEVICE when we map the data.
 501  */
 502 static enum dma_data_direction tcm_qla2xxx_mapping_dir(struct se_cmd *se_cmd)
 503 {
 504         if (se_cmd->se_cmd_flags & SCF_BIDI)
 505                 return DMA_BIDIRECTIONAL;
 506
 507         switch (se_cmd->data_direction) {
 508         case DMA_TO_DEVICE:
 509                 return DMA_FROM_DEVICE;
 510         case DMA_FROM_DEVICE:
 511                 return DMA_TO_DEVICE;
 512         case DMA_NONE:
 513         default:
 514                 return DMA_NONE;
 515         }
 516 }
 517
 518 static int tcm_qla2xxx_write_pending(struct se_cmd *se_cmd)
 519 {
 520         struct qla_tgt_cmd *cmd = container_of(se_cmd,
 521                                 struct qla_tgt_cmd, se_cmd);
 522
 523         cmd->bufflen = se_cmd->data_length;
 524         cmd->dma_data_direction = tcm_qla2xxx_mapping_dir(se_cmd);
 525
 526         cmd->sg_cnt = se_cmd->t_data_nents;
 527         cmd->sg = se_cmd->t_data_sg;
 528
 529         /*
 530          * qla_target.c:qlt_rdy_to_xfer() will call pci_map_sg() to setup
 531          * the SGL mappings into PCIe memory for incoming FCP WRITE data.
 532          */
 533         return qlt_rdy_to_xfer(cmd);
 534 }
 535
 536 static int tcm_qla2xxx_write_pending_status(struct se_cmd *se_cmd)
 537 {
 538         unsigned long flags;
 539         /*
 540          * Check for WRITE_PENDING status to determine if we need to wait for
 541          * CTIO aborts to be posted via hardware in tcm_qla2xxx_handle_data().
 542          */
 543         spin_lock_irqsave(&se_cmd->t_state_lock, flags);
 544         if (se_cmd->t_state == TRANSPORT_WRITE_PENDING ||
 545             se_cmd->t_state == TRANSPORT_COMPLETE_QF_WP) {
 546                 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
 547                 wait_for_completion_timeout(&se_cmd->t_transport_stop_comp,
 548                                                 3000);
 549                 return 0;
 550         }
 551         spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
 552
 553         return 0;
 554 }
 555
 556 static void tcm_qla2xxx_set_default_node_attrs(struct se_node_acl *nacl)
 557 {
 558         return;
 559 }
 560
 561 static u32 tcm_qla2xxx_get_task_tag(struct se_cmd *se_cmd)
 562 {
 563         struct qla_tgt_cmd *cmd = container_of(se_cmd,
 564                                 struct qla_tgt_cmd, se_cmd);
 565
 566         return cmd->tag;
 567 }
 568
 569 static int tcm_qla2xxx_get_cmd_state(struct se_cmd *se_cmd)
 570 {
 571         return 0;
 572 }
 573
 574 /*
 575  * Called from process context in qla_target.c:qlt_do_work() code
 576  */
 577 static int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd,
 578         unsigned char *cdb, uint32_t data_length, int fcp_task_attr,
 579         int data_dir, int bidi)
 580 {
 581         struct se_cmd *se_cmd = &cmd->se_cmd;
 582         struct se_session *se_sess;
 583         struct qla_tgt_sess *sess;
 584         int flags = TARGET_SCF_ACK_KREF;
 585
 586         if (bidi)
 587                 flags |= TARGET_SCF_BIDI_OP;
 588
 589         sess = cmd->sess;
 590         if (!sess) {
 591                 pr_err("Unable to locate struct qla_tgt_sess from qla_tgt_cmd\n");
 592                 return -EINVAL;
 593         }
 594
 595         se_sess = sess->se_sess;
 596         if (!se_sess) {
 597                 pr_err("Unable to locate active struct se_session\n");
 598                 return -EINVAL;
 599         }
 600
 601         target_submit_cmd(se_cmd, se_sess, cdb, &cmd->sense_buffer[0],
 602                                 cmd->unpacked_lun, data_length, fcp_task_attr,
 603                                 data_dir, flags);
 604         return 0;
 605 }
 606
 607 static void tcm_qla2xxx_do_rsp(struct work_struct *work)
 608 {
 609         struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
 610         /*
 611          * Dispatch ->queue_status from workqueue process context
 612          */
 613         transport_generic_request_failure(&cmd->se_cmd);
 614 }
 615
 616 /*
 617  * Called from qla_target.c:qlt_do_ctio_completion()
 618  */
 619 static int tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd)
 620 {
 621         struct se_cmd *se_cmd = &cmd->se_cmd;
 622         unsigned long flags;
 623         /*
 624          * Ensure that the complete FCP WRITE payload has been received.
 625          * Otherwise return an exception via CHECK_CONDITION status.
 626          */
 627         if (!cmd->write_data_transferred) {
 628                 /*
 629                  * Check if se_cmd has already been aborted via LUN_RESET, and
 630                  * waiting upon completion in tcm_qla2xxx_write_pending_status()
 631                  */
 632                 spin_lock_irqsave(&se_cmd->t_state_lock, flags);
 633                 if (se_cmd->transport_state & CMD_T_ABORTED) {
 634                         spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
 635                         complete(&se_cmd->t_transport_stop_comp);
 636                         return 0;
 637                 }
 638                 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
 639
 640                 se_cmd->scsi_sense_reason = TCM_CHECK_CONDITION_ABORT_CMD;
 641                 INIT_WORK(&cmd->work, tcm_qla2xxx_do_rsp);
 642                 queue_work(tcm_qla2xxx_free_wq, &cmd->work);
 643                 return 0;
 644         }
 645         /*
 646          * We now tell TCM to queue this WRITE CDB with TRANSPORT_PROCESS_WRITE
 647          * status to the backstore processing thread.
 648          */
 649         return transport_generic_handle_data(&cmd->se_cmd);
 650 }
 651
 652 /*
 653  * Called from qla_target.c:qlt_issue_task_mgmt()
 654  */
 655 static int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *mcmd, uint32_t lun,
 656         uint8_t tmr_func, uint32_t tag)
 657 {
 658         struct qla_tgt_sess *sess = mcmd->sess;
 659         struct se_cmd *se_cmd = &mcmd->se_cmd;
 660
 661         return target_submit_tmr(se_cmd, sess->se_sess, NULL, lun, mcmd,
 662                         tmr_func, GFP_ATOMIC, tag, TARGET_SCF_ACK_KREF);
 663 }
 664
 665 static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd)
 666 {
 667         struct qla_tgt_cmd *cmd = container_of(se_cmd,
 668                                 struct qla_tgt_cmd, se_cmd);
 669
 670         cmd->bufflen = se_cmd->data_length;
 671         cmd->dma_data_direction = tcm_qla2xxx_mapping_dir(se_cmd);
 672         cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED);
 673
 674         cmd->sg_cnt = se_cmd->t_data_nents;
 675         cmd->sg = se_cmd->t_data_sg;
 676         cmd->offset = 0;
 677
 678         /*
 679          * Now queue completed DATA_IN the qla2xxx LLD and response ring
 680          */
 681         return qlt_xmit_response(cmd, QLA_TGT_XMIT_DATA|QLA_TGT_XMIT_STATUS,
 682                                 se_cmd->scsi_status);
 683 }
 684
 685 static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd)
 686 {
 687         struct qla_tgt_cmd *cmd = container_of(se_cmd,
 688                                 struct qla_tgt_cmd, se_cmd);
 689         int xmit_type = QLA_TGT_XMIT_STATUS;
 690
 691         cmd->bufflen = se_cmd->data_length;
 692         cmd->sg = NULL;
 693         cmd->sg_cnt = 0;
 694         cmd->offset = 0;
 695         cmd->dma_data_direction = tcm_qla2xxx_mapping_dir(se_cmd);
 696         cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED);
 697
 698         if (se_cmd->data_direction == DMA_FROM_DEVICE) {
 699                 /*
 700                  * For FCP_READ with CHECK_CONDITION status, clear cmd->bufflen
 701                  * for qla_tgt_xmit_response LLD code
 702                  */
 703                 se_cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT;
 704                 se_cmd->residual_count = se_cmd->data_length;
 705
 706                 cmd->bufflen = 0;
 707         }
 708         /*
 709          * Now queue status response to qla2xxx LLD code and response ring
 710          */
 711         return qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status);
 712 }
 713
 714 static int tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd)
 715 {
 716         struct se_tmr_req *se_tmr = se_cmd->se_tmr_req;
 717         struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
 718                                 struct qla_tgt_mgmt_cmd, se_cmd);
 719
 720         pr_debug("queue_tm_rsp: mcmd: %p func: 0x%02x response: 0x%02x\n",
 721                         mcmd, se_tmr->function, se_tmr->response);
 722         /*
 723          * Do translation between TCM TM response codes and
 724          * QLA2xxx FC TM response codes.
 725          */
 726         switch (se_tmr->response) {
 727         case TMR_FUNCTION_COMPLETE:
 728                 mcmd->fc_tm_rsp = FC_TM_SUCCESS;
 729                 break;
 730         case TMR_TASK_DOES_NOT_EXIST:
 731                 mcmd->fc_tm_rsp = FC_TM_BAD_CMD;
 732                 break;
 733         case TMR_FUNCTION_REJECTED:
 734                 mcmd->fc_tm_rsp = FC_TM_REJECT;
 735                 break;
 736         case TMR_LUN_DOES_NOT_EXIST:
 737         default:
 738                 mcmd->fc_tm_rsp = FC_TM_FAILED;
 739                 break;
 740         }
 741         /*
 742          * Queue the TM response to QLA2xxx LLD to build a
 743          * CTIO response packet.
 744          */
 745         qlt_xmit_tm_rsp(mcmd);
 746
 747         return 0;
 748 }
 749
 750 static u16 tcm_qla2xxx_get_fabric_sense_len(void)
 751 {
 752         return 0;
 753 }
 754
 755 static u16 tcm_qla2xxx_set_fabric_sense_len(struct se_cmd *se_cmd,
 756                                         u32 sense_length)
 757 {
 758         return 0;
 759 }
 760
 761 /* Local pointer to allocated TCM configfs fabric module */
 762 struct target_fabric_configfs *tcm_qla2xxx_fabric_configfs;
 763 struct target_fabric_configfs *tcm_qla2xxx_npiv_fabric_configfs;
 764
 765 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *,
 766                         struct tcm_qla2xxx_nacl *, struct qla_tgt_sess *);
 767 /*
 768  * Expected to be called with struct qla_hw_data->hardware_lock held
 769  */
 770 static void tcm_qla2xxx_clear_nacl_from_fcport_map(struct qla_tgt_sess *sess)
 771 {
 772         struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
 773         struct se_portal_group *se_tpg = se_nacl->se_tpg;
 774         struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
 775         struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
 776                                 struct tcm_qla2xxx_lport, lport_wwn);
 777         struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
 778                                 struct tcm_qla2xxx_nacl, se_node_acl);
 779         void *node;
 780
 781         pr_debug("fc_rport domain: port_id 0x%06x\n", nacl->nport_id);
 782
 783         node = btree_remove32(&lport->lport_fcport_map, nacl->nport_id);
 784         WARN_ON(node && (node != se_nacl));
 785
 786         pr_debug("Removed from fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%06x\n",
 787             se_nacl, nacl->nport_wwnn, nacl->nport_id);
 788         /*
 789          * Now clear the se_nacl and session pointers from our HW lport lookup
 790          * table mapping for this initiator's fabric S_ID and LOOP_ID entries.
 791          *
 792          * This is done ahead of callbacks into tcm_qla2xxx_free_session() ->
 793          * target_wait_for_sess_cmds() before the session waits for outstanding
 794          * I/O to complete, to avoid a race between session shutdown execution
 795          * and incoming ATIOs or TMRs picking up a stale se_node_act reference.
 796          */
 797         tcm_qla2xxx_clear_sess_lookup(lport, nacl, sess);
 798 }
 799
 800 static void tcm_qla2xxx_release_session(struct kref *kref)
 801 {
 802         struct se_session *se_sess = container_of(kref,
 803                         struct se_session, sess_kref);
 804
 805         qlt_unreg_sess(se_sess->fabric_sess_ptr);
 806 }
 807
 808 static void tcm_qla2xxx_put_session(struct se_session *se_sess)
 809 {
 810         struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
 811         struct qla_hw_data *ha = sess->vha->hw;
 812         unsigned long flags;
 813
 814         spin_lock_irqsave(&ha->hardware_lock, flags);
 815         kref_put(&se_sess->sess_kref, tcm_qla2xxx_release_session);
 816         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 817 }
 818
 819 static void tcm_qla2xxx_put_sess(struct qla_tgt_sess *sess)
 820 {
 821         tcm_qla2xxx_put_session(sess->se_sess);
 822 }
 823
 824 static void tcm_qla2xxx_shutdown_sess(struct qla_tgt_sess *sess)
 825 {
 826         tcm_qla2xxx_shutdown_session(sess->se_sess);
 827 }
 828
 829 static struct se_node_acl *tcm_qla2xxx_make_nodeacl(
 830         struct se_portal_group *se_tpg,
 831         struct config_group *group,
 832         const char *name)
 833 {
 834         struct se_node_acl *se_nacl, *se_nacl_new;
 835         struct tcm_qla2xxx_nacl *nacl;
 836         u64 wwnn;
 837         u32 qla2xxx_nexus_depth;
 838
 839         if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0)
 840                 return ERR_PTR(-EINVAL);
 841
 842         se_nacl_new = tcm_qla2xxx_alloc_fabric_acl(se_tpg);
 843         if (!se_nacl_new)
 844                 return ERR_PTR(-ENOMEM);
 845 /* #warning FIXME: Hardcoded qla2xxx_nexus depth in tcm_qla2xxx_make_nodeacl */
 846         qla2xxx_nexus_depth = 1;
 847
 848         /*
 849          * se_nacl_new may be released by core_tpg_add_initiator_node_acl()
 850          * when converting a NodeACL from demo mode -> explict
 851          */
 852         se_nacl = core_tpg_add_initiator_node_acl(se_tpg, se_nacl_new,
 853                                 name, qla2xxx_nexus_depth);
 854         if (IS_ERR(se_nacl)) {
 855                 tcm_qla2xxx_release_fabric_acl(se_tpg, se_nacl_new);
 856                 return se_nacl;
 857         }
 858         /*
 859          * Locate our struct tcm_qla2xxx_nacl and set the FC Nport WWPN
 860          */
 861         nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
 862         nacl->nport_wwnn = wwnn;
 863         tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn);
 864
 865         return se_nacl;
 866 }
 867
 868 static void tcm_qla2xxx_drop_nodeacl(struct se_node_acl *se_acl)
 869 {
 870         struct se_portal_group *se_tpg = se_acl->se_tpg;
 871         struct tcm_qla2xxx_nacl *nacl = container_of(se_acl,
 872                                 struct tcm_qla2xxx_nacl, se_node_acl);
 873
 874         core_tpg_del_initiator_node_acl(se_tpg, se_acl, 1);
 875         kfree(nacl);
 876 }
 877
 878 /* Start items for tcm_qla2xxx_tpg_attrib_cit */
 879
 880 #define DEF_QLA_TPG_ATTRIB(name)                                        \
 881                                                                         \
 882 static ssize_t tcm_qla2xxx_tpg_attrib_show_##name(                      \
 883         struct se_portal_group *se_tpg,                                 \
 884         char *page)                                                     \
 885 {                                                                       \
 886         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,              \
 887                         struct tcm_qla2xxx_tpg, se_tpg);                \
 888                                                                         \
 889         return sprintf(page, "%u\n", QLA_TPG_ATTRIB(tpg)->name);        \
 890 }                                                                       \
 891                                                                         \
 892 static ssize_t tcm_qla2xxx_tpg_attrib_store_##name(                     \
 893         struct se_portal_group *se_tpg,                                 \
 894         const char *page,                                               \
 895         size_t count)                                                   \
 896 {                                                                       \
 897         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,              \
 898                         struct tcm_qla2xxx_tpg, se_tpg);                \
 899         unsigned long val;                                              \
 900         int ret;                                                        \
 901                                                                         \
 902         ret = kstrtoul(page, 0, &val);                                  \
 903         if (ret < 0) {                                                  \
 904                 pr_err("kstrtoul() failed with"                         \
 905                                 " ret: %d\n", ret);                     \
 906                 return -EINVAL;                                         \
 907         }                                                               \
 908         ret = tcm_qla2xxx_set_attrib_##name(tpg, val);                  \
 909                                                                         \
 910         return (!ret) ? count : -EINVAL;                                \
 911 }
 912
 913 #define DEF_QLA_TPG_ATTR_BOOL(_name)                                    \
 914                                                                         \
 915 static int tcm_qla2xxx_set_attrib_##_name(                              \
 916         struct tcm_qla2xxx_tpg *tpg,                                    \
 917         unsigned long val)                                              \
 918 {                                                                       \
 919         struct tcm_qla2xxx_tpg_attrib *a = &tpg->tpg_attrib;            \
 920                                                                         \
 921         if ((val != 0) && (val != 1)) {                                 \
 922                 pr_err("Illegal boolean value %lu\n", val);             \
 923                 return -EINVAL;                                         \
 924         }                                                               \
 925                                                                         \
 926         a->_name = val;                                                 \
 927         return 0;                                                       \
 928 }
 929
 930 #define QLA_TPG_ATTR(_name, _mode) \
 931         TF_TPG_ATTRIB_ATTR(tcm_qla2xxx, _name, _mode);
 932
 933 /*
 934  * Define tcm_qla2xxx_tpg_attrib_s_generate_node_acls
 935  */
 936 DEF_QLA_TPG_ATTR_BOOL(generate_node_acls);
 937 DEF_QLA_TPG_ATTRIB(generate_node_acls);
 938 QLA_TPG_ATTR(generate_node_acls, S_IRUGO | S_IWUSR);
 939
 940 /*
 941  Define tcm_qla2xxx_attrib_s_cache_dynamic_acls
 942  */
 943 DEF_QLA_TPG_ATTR_BOOL(cache_dynamic_acls);
 944 DEF_QLA_TPG_ATTRIB(cache_dynamic_acls);
 945 QLA_TPG_ATTR(cache_dynamic_acls, S_IRUGO | S_IWUSR);
 946
 947 /*
 948  * Define tcm_qla2xxx_tpg_attrib_s_demo_mode_write_protect
 949  */
 950 DEF_QLA_TPG_ATTR_BOOL(demo_mode_write_protect);
 951 DEF_QLA_TPG_ATTRIB(demo_mode_write_protect);
 952 QLA_TPG_ATTR(demo_mode_write_protect, S_IRUGO | S_IWUSR);
 953
 954 /*
 955  * Define tcm_qla2xxx_tpg_attrib_s_prod_mode_write_protect
 956  */
 957 DEF_QLA_TPG_ATTR_BOOL(prod_mode_write_protect);
 958 DEF_QLA_TPG_ATTRIB(prod_mode_write_protect);
 959 QLA_TPG_ATTR(prod_mode_write_protect, S_IRUGO | S_IWUSR);
 960
 961 static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = {
 962         &tcm_qla2xxx_tpg_attrib_generate_node_acls.attr,
 963         &tcm_qla2xxx_tpg_attrib_cache_dynamic_acls.attr,
 964         &tcm_qla2xxx_tpg_attrib_demo_mode_write_protect.attr,
 965         &tcm_qla2xxx_tpg_attrib_prod_mode_write_protect.attr,
 966         NULL,
 967 };
 968
 969 /* End items for tcm_qla2xxx_tpg_attrib_cit */
 970
 971 static ssize_t tcm_qla2xxx_tpg_show_enable(
 972         struct se_portal_group *se_tpg,
 973         char *page)
 974 {
 975         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 976                         struct tcm_qla2xxx_tpg, se_tpg);
 977
 978         return snprintf(page, PAGE_SIZE, "%d\n",
 979                         atomic_read(&tpg->lport_tpg_enabled));
 980 }
 981
 982 static ssize_t tcm_qla2xxx_tpg_store_enable(
 983         struct se_portal_group *se_tpg,
 984         const char *page,
 985         size_t count)
 986 {
 987         struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
 988         struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
 989                         struct tcm_qla2xxx_lport, lport_wwn);
 990         struct scsi_qla_host *vha = lport->qla_vha;
 991         struct qla_hw_data *ha = vha->hw;
 992         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 993                         struct tcm_qla2xxx_tpg, se_tpg);
 994         unsigned long op;
 995         int rc;
 996
 997         rc = kstrtoul(page, 0, &op);
 998         if (rc < 0) {
 999                 pr_err("kstrtoul() returned %d\n", rc);
1000                 return -EINVAL;
1001         }
1002         if ((op != 1) && (op != 0)) {
1003                 pr_err("Illegal value for tpg_enable: %lu\n", op);
1004                 return -EINVAL;
1005         }
1006
1007         if (op) {
1008                 atomic_set(&tpg->lport_tpg_enabled, 1);
1009                 qlt_enable_vha(vha);
1010         } else {
1011                 if (!ha->tgt.qla_tgt) {
1012                         pr_err("truct qla_hw_data *ha->tgt.qla_tgt is NULL\n");
1013                         return -ENODEV;
1014                 }
1015                 atomic_set(&tpg->lport_tpg_enabled, 0);
1016                 qlt_stop_phase1(ha->tgt.qla_tgt);
1017         }
1018
1019         return count;
1020 }
1021
1022 TF_TPG_BASE_ATTR(tcm_qla2xxx, enable, S_IRUGO | S_IWUSR);
1023
1024 static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = {
1025         &tcm_qla2xxx_tpg_enable.attr,
1026         NULL,
1027 };
1028
1029 static struct se_portal_group *tcm_qla2xxx_make_tpg(
1030         struct se_wwn *wwn,
1031         struct config_group *group,
1032         const char *name)
1033 {
1034         struct tcm_qla2xxx_lport *lport = container_of(wwn,
1035                         struct tcm_qla2xxx_lport, lport_wwn);
1036         struct tcm_qla2xxx_tpg *tpg;
1037         unsigned long tpgt;
1038         int ret;
1039
1040         if (strstr(name, "tpgt_") != name)
1041                 return ERR_PTR(-EINVAL);
1042         if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
1043                 return ERR_PTR(-EINVAL);
1044
1045         if (!lport->qla_npiv_vp && (tpgt != 1)) {
1046                 pr_err("In non NPIV mode, a single TPG=1 is used for HW port mappings\n");
1047                 return ERR_PTR(-ENOSYS);
1048         }
1049
1050         tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
1051         if (!tpg) {
1052                 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1053                 return ERR_PTR(-ENOMEM);
1054         }
1055         tpg->lport = lport;
1056         tpg->lport_tpgt = tpgt;
1057         /*
1058          * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
1059          * NodeACLs
1060          */
1061         QLA_TPG_ATTRIB(tpg)->generate_node_acls = 1;
1062         QLA_TPG_ATTRIB(tpg)->demo_mode_write_protect = 1;
1063         QLA_TPG_ATTRIB(tpg)->cache_dynamic_acls = 1;
1064
1065         ret = core_tpg_register(&tcm_qla2xxx_fabric_configfs->tf_ops, wwn,
1066                                 &tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL);
1067         if (ret < 0) {
1068                 kfree(tpg);
1069                 return NULL;
1070         }
1071         /*
1072          * Setup local TPG=1 pointer for non NPIV mode.
1073          */
1074         if (lport->qla_npiv_vp == NULL)
1075                 lport->tpg_1 = tpg;
1076
1077         return &tpg->se_tpg;
1078 }
1079
1080 static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg)
1081 {
1082         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1083                         struct tcm_qla2xxx_tpg, se_tpg);
1084         struct tcm_qla2xxx_lport *lport = tpg->lport;
1085         struct scsi_qla_host *vha = lport->qla_vha;
1086         struct qla_hw_data *ha = vha->hw;
1087         /*
1088          * Call into qla2x_target.c LLD logic to shutdown the active
1089          * FC Nexuses and disable target mode operation for this qla_hw_data
1090          */
1091         if (ha->tgt.qla_tgt && !ha->tgt.qla_tgt->tgt_stop)
1092                 qlt_stop_phase1(ha->tgt.qla_tgt);
1093
1094         core_tpg_deregister(se_tpg);
1095         /*
1096          * Clear local TPG=1 pointer for non NPIV mode.
1097          */
1098         if (lport->qla_npiv_vp == NULL)
1099                 lport->tpg_1 = NULL;
1100
1101         kfree(tpg);
1102 }
1103
1104 static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg(
1105         struct se_wwn *wwn,
1106         struct config_group *group,
1107         const char *name)
1108 {
1109         struct tcm_qla2xxx_lport *lport = container_of(wwn,
1110                         struct tcm_qla2xxx_lport, lport_wwn);
1111         struct tcm_qla2xxx_tpg *tpg;
1112         unsigned long tpgt;
1113         int ret;
1114
1115         if (strstr(name, "tpgt_") != name)
1116                 return ERR_PTR(-EINVAL);
1117         if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
1118                 return ERR_PTR(-EINVAL);
1119
1120         tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
1121         if (!tpg) {
1122                 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1123                 return ERR_PTR(-ENOMEM);
1124         }
1125         tpg->lport = lport;
1126         tpg->lport_tpgt = tpgt;
1127
1128         ret = core_tpg_register(&tcm_qla2xxx_npiv_fabric_configfs->tf_ops, wwn,
1129                                 &tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL);
1130         if (ret < 0) {
1131                 kfree(tpg);
1132                 return NULL;
1133         }
1134         return &tpg->se_tpg;
1135 }
1136
1137 /*
1138  * Expected to be called with struct qla_hw_data->hardware_lock held
1139  */
1140 static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_s_id(
1141         scsi_qla_host_t *vha,
1142         const uint8_t *s_id)
1143 {
1144         struct qla_hw_data *ha = vha->hw;
1145         struct tcm_qla2xxx_lport *lport;
1146         struct se_node_acl *se_nacl;
1147         struct tcm_qla2xxx_nacl *nacl;
1148         u32 key;
1149
1150         lport = ha->tgt.target_lport_ptr;
1151         if (!lport) {
1152                 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1153                 dump_stack();
1154                 return NULL;
1155         }
1156
1157         key = (((unsigned long)s_id[0] << 16) |
1158                ((unsigned long)s_id[1] << 8) |
1159                (unsigned long)s_id[2]);
1160         pr_debug("find_sess_by_s_id: 0x%06x\n", key);
1161
1162         se_nacl = btree_lookup32(&lport->lport_fcport_map, key);
1163         if (!se_nacl) {
1164                 pr_debug("Unable to locate s_id: 0x%06x\n", key);
1165                 return NULL;
1166         }
1167         pr_debug("find_sess_by_s_id: located se_nacl: %p, initiatorname: %s\n",
1168             se_nacl, se_nacl->initiatorname);
1169
1170         nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1171         if (!nacl->qla_tgt_sess) {
1172                 pr_err("Unable to locate struct qla_tgt_sess\n");
1173                 return NULL;
1174         }
1175
1176         return nacl->qla_tgt_sess;
1177 }
1178
1179 /*
1180  * Expected to be called with struct qla_hw_data->hardware_lock held
1181  */
1182 static void tcm_qla2xxx_set_sess_by_s_id(
1183         struct tcm_qla2xxx_lport *lport,
1184         struct se_node_acl *new_se_nacl,
1185         struct tcm_qla2xxx_nacl *nacl,
1186         struct se_session *se_sess,
1187         struct qla_tgt_sess *qla_tgt_sess,
1188         uint8_t *s_id)
1189 {
1190         u32 key;
1191         void *slot;
1192         int rc;
1193
1194         key = (((unsigned long)s_id[0] << 16) |
1195                ((unsigned long)s_id[1] << 8) |
1196                (unsigned long)s_id[2]);
1197         pr_debug("set_sess_by_s_id: %06x\n", key);
1198
1199         slot = btree_lookup32(&lport->lport_fcport_map, key);
1200         if (!slot) {
1201                 if (new_se_nacl) {
1202                         pr_debug("Setting up new fc_port entry to new_se_nacl\n");
1203                         nacl->nport_id = key;
1204                         rc = btree_insert32(&lport->lport_fcport_map, key,
1205                                         new_se_nacl, GFP_ATOMIC);
1206                         if (rc)
1207                                 printk(KERN_ERR "Unable to insert s_id into fcport_map: %06x\n",
1208                                     (int)key);
1209                 } else {
1210                         pr_debug("Wiping nonexisting fc_port entry\n");
1211                 }
1212
1213                 qla_tgt_sess->se_sess = se_sess;
1214                 nacl->qla_tgt_sess = qla_tgt_sess;
1215                 return;
1216         }
1217
1218         if (nacl->qla_tgt_sess) {
1219                 if (new_se_nacl == NULL) {
1220                         pr_debug("Clearing existing nacl->qla_tgt_sess and fc_port entry\n");
1221                         btree_remove32(&lport->lport_fcport_map, key);
1222                         nacl->qla_tgt_sess = NULL;
1223                         return;
1224                 }
1225                 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_port entry\n");
1226                 btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1227                 qla_tgt_sess->se_sess = se_sess;
1228                 nacl->qla_tgt_sess = qla_tgt_sess;
1229                 return;
1230         }
1231
1232         if (new_se_nacl == NULL) {
1233                 pr_debug("Clearing existing fc_port entry\n");
1234                 btree_remove32(&lport->lport_fcport_map, key);
1235                 return;
1236         }
1237
1238         pr_debug("Replacing existing fc_port entry w/o active nacl->qla_tgt_sess\n");
1239         btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1240         qla_tgt_sess->se_sess = se_sess;
1241         nacl->qla_tgt_sess = qla_tgt_sess;
1242
1243         pr_debug("Setup nacl->qla_tgt_sess %p by s_id for se_nacl: %p, initiatorname: %s\n",
1244             nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname);
1245 }
1246
1247 /*
1248  * Expected to be called with struct qla_hw_data->hardware_lock held
1249  */
1250 static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_loop_id(
1251         scsi_qla_host_t *vha,
1252         const uint16_t loop_id)
1253 {
1254         struct qla_hw_data *ha = vha->hw;
1255         struct tcm_qla2xxx_lport *lport;
1256         struct se_node_acl *se_nacl;
1257         struct tcm_qla2xxx_nacl *nacl;
1258         struct tcm_qla2xxx_fc_loopid *fc_loopid;
1259
1260         lport = ha->tgt.target_lport_ptr;
1261         if (!lport) {
1262                 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1263                 dump_stack();
1264                 return NULL;
1265         }
1266
1267         pr_debug("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1268
1269         fc_loopid = lport->lport_loopid_map + loop_id;
1270         se_nacl = fc_loopid->se_nacl;
1271         if (!se_nacl) {
1272                 pr_debug("Unable to locate se_nacl by loop_id: 0x%04x\n",
1273                     loop_id);
1274                 return NULL;
1275         }
1276
1277         nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1278
1279         if (!nacl->qla_tgt_sess) {
1280                 pr_err("Unable to locate struct qla_tgt_sess\n");
1281                 return NULL;
1282         }
1283
1284         return nacl->qla_tgt_sess;
1285 }
1286
1287 /*
1288  * Expected to be called with struct qla_hw_data->hardware_lock held
1289  */
1290 static void tcm_qla2xxx_set_sess_by_loop_id(
1291         struct tcm_qla2xxx_lport *lport,
1292         struct se_node_acl *new_se_nacl,
1293         struct tcm_qla2xxx_nacl *nacl,
1294         struct se_session *se_sess,
1295         struct qla_tgt_sess *qla_tgt_sess,
1296         uint16_t loop_id)
1297 {
1298         struct se_node_acl *saved_nacl;
1299         struct tcm_qla2xxx_fc_loopid *fc_loopid;
1300
1301         pr_debug("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1302
1303         fc_loopid = &((struct tcm_qla2xxx_fc_loopid *)
1304                         lport->lport_loopid_map)[loop_id];
1305
1306         saved_nacl = fc_loopid->se_nacl;
1307         if (!saved_nacl) {
1308                 pr_debug("Setting up new fc_loopid->se_nacl to new_se_nacl\n");
1309                 fc_loopid->se_nacl = new_se_nacl;
1310                 if (qla_tgt_sess->se_sess != se_sess)
1311                         qla_tgt_sess->se_sess = se_sess;
1312                 if (nacl->qla_tgt_sess != qla_tgt_sess)
1313                         nacl->qla_tgt_sess = qla_tgt_sess;
1314                 return;
1315         }
1316
1317         if (nacl->qla_tgt_sess) {
1318                 if (new_se_nacl == NULL) {
1319                         pr_debug("Clearing nacl->qla_tgt_sess and fc_loopid->se_nacl\n");
1320                         fc_loopid->se_nacl = NULL;
1321                         nacl->qla_tgt_sess = NULL;
1322                         return;
1323                 }
1324
1325                 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_loopid->se_nacl\n");
1326                 fc_loopid->se_nacl = new_se_nacl;
1327                 if (qla_tgt_sess->se_sess != se_sess)
1328                         qla_tgt_sess->se_sess = se_sess;
1329                 if (nacl->qla_tgt_sess != qla_tgt_sess)
1330                         nacl->qla_tgt_sess = qla_tgt_sess;
1331                 return;
1332         }
1333
1334         if (new_se_nacl == NULL) {
1335                 pr_debug("Clearing fc_loopid->se_nacl\n");
1336                 fc_loopid->se_nacl = NULL;
1337                 return;
1338         }
1339
1340         pr_debug("Replacing existing fc_loopid->se_nacl w/o active nacl->qla_tgt_sess\n");
1341         fc_loopid->se_nacl = new_se_nacl;
1342         if (qla_tgt_sess->se_sess != se_sess)
1343                 qla_tgt_sess->se_sess = se_sess;
1344         if (nacl->qla_tgt_sess != qla_tgt_sess)
1345                 nacl->qla_tgt_sess = qla_tgt_sess;
1346
1347         pr_debug("Setup nacl->qla_tgt_sess %p by loop_id for se_nacl: %p, initiatorname: %s\n",
1348             nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname);
1349 }
1350
1351 /*
1352  * Should always be called with qla_hw_data->hardware_lock held.
1353  */
1354 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *lport,
1355                 struct tcm_qla2xxx_nacl *nacl, struct qla_tgt_sess *sess)
1356 {
1357         struct se_session *se_sess = sess->se_sess;
1358         unsigned char be_sid[3];
1359
1360         be_sid[0] = sess->s_id.b.domain;
1361         be_sid[1] = sess->s_id.b.area;
1362         be_sid[2] = sess->s_id.b.al_pa;
1363
1364         tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess,
1365                                 sess, be_sid);
1366         tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess,
1367                                 sess, sess->loop_id);
1368 }
1369
1370 static void tcm_qla2xxx_free_session(struct qla_tgt_sess *sess)
1371 {
1372         struct qla_tgt *tgt = sess->tgt;
1373         struct qla_hw_data *ha = tgt->ha;
1374         struct se_session *se_sess;
1375         struct se_node_acl *se_nacl;
1376         struct tcm_qla2xxx_lport *lport;
1377         struct tcm_qla2xxx_nacl *nacl;
1378
1379         BUG_ON(in_interrupt());
1380
1381         se_sess = sess->se_sess;
1382         if (!se_sess) {
1383                 pr_err("struct qla_tgt_sess->se_sess is NULL\n");
1384                 dump_stack();
1385                 return;
1386         }
1387         se_nacl = se_sess->se_node_acl;
1388         nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1389
1390         lport = ha->tgt.target_lport_ptr;
1391         if (!lport) {
1392                 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1393                 dump_stack();
1394                 return;
1395         }
1396         target_wait_for_sess_cmds(se_sess, 0);
1397
1398         transport_deregister_session_configfs(sess->se_sess);
1399         transport_deregister_session(sess->se_sess);
1400 }
1401
1402 /*
1403  * Called via qlt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl()
1404  * to locate struct se_node_acl
1405  */
1406 static int tcm_qla2xxx_check_initiator_node_acl(
1407         scsi_qla_host_t *vha,
1408         unsigned char *fc_wwpn,
1409         void *qla_tgt_sess,
1410         uint8_t *s_id,
1411         uint16_t loop_id)
1412 {
1413         struct qla_hw_data *ha = vha->hw;
1414         struct tcm_qla2xxx_lport *lport;
1415         struct tcm_qla2xxx_tpg *tpg;
1416         struct tcm_qla2xxx_nacl *nacl;
1417         struct se_portal_group *se_tpg;
1418         struct se_node_acl *se_nacl;
1419         struct se_session *se_sess;
1420         struct qla_tgt_sess *sess = qla_tgt_sess;
1421         unsigned char port_name[36];
1422         unsigned long flags;
1423
1424         lport = ha->tgt.target_lport_ptr;
1425         if (!lport) {
1426                 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1427                 dump_stack();
1428                 return -EINVAL;
1429         }
1430         /*
1431          * Locate the TPG=1 reference..
1432          */
1433         tpg = lport->tpg_1;
1434         if (!tpg) {
1435                 pr_err("Unable to lcoate struct tcm_qla2xxx_lport->tpg_1\n");
1436                 return -EINVAL;
1437         }
1438         se_tpg = &tpg->se_tpg;
1439
1440         se_sess = transport_init_session();
1441         if (IS_ERR(se_sess)) {
1442                 pr_err("Unable to initialize struct se_session\n");
1443                 return PTR_ERR(se_sess);
1444         }
1445         /*
1446          * Format the FCP Initiator port_name into colon seperated values to
1447          * match the format by tcm_qla2xxx explict ConfigFS NodeACLs.
1448          */
1449         memset(&port_name, 0, 36);
1450         snprintf(port_name, 36, "%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x",
1451                 fc_wwpn[0], fc_wwpn[1], fc_wwpn[2], fc_wwpn[3], fc_wwpn[4],
1452                 fc_wwpn[5], fc_wwpn[6], fc_wwpn[7]);
1453         /*
1454          * Locate our struct se_node_acl either from an explict NodeACL created
1455          * via ConfigFS, or via running in TPG demo mode.
1456          */
1457         se_sess->se_node_acl = core_tpg_check_initiator_node_acl(se_tpg,
1458                                         port_name);
1459         if (!se_sess->se_node_acl) {
1460                 transport_free_session(se_sess);
1461                 return -EINVAL;
1462         }
1463         se_nacl = se_sess->se_node_acl;
1464         nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1465         /*
1466          * And now setup the new se_nacl and session pointers into our HW lport
1467          * mappings for fabric S_ID and LOOP_ID.
1468          */
1469         spin_lock_irqsave(&ha->hardware_lock, flags);
1470         tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl, se_sess,
1471                         qla_tgt_sess, s_id);
1472         tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl, se_sess,
1473                         qla_tgt_sess, loop_id);
1474         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1475         /*
1476          * Finally register the new FC Nexus with TCM
1477          */
1478         __transport_register_session(se_nacl->se_tpg, se_nacl, se_sess, sess);
1479
1480         return 0;
1481 }
1482
1483 /*
1484  * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path.
1485  */
1486 static struct qla_tgt_func_tmpl tcm_qla2xxx_template = {
1487         .handle_cmd             = tcm_qla2xxx_handle_cmd,
1488         .handle_data            = tcm_qla2xxx_handle_data,
1489         .handle_tmr             = tcm_qla2xxx_handle_tmr,
1490         .free_cmd               = tcm_qla2xxx_free_cmd,
1491         .free_mcmd              = tcm_qla2xxx_free_mcmd,
1492         .free_session           = tcm_qla2xxx_free_session,
1493         .check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl,
1494         .find_sess_by_s_id      = tcm_qla2xxx_find_sess_by_s_id,
1495         .find_sess_by_loop_id   = tcm_qla2xxx_find_sess_by_loop_id,
1496         .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map,
1497         .put_sess               = tcm_qla2xxx_put_sess,
1498         .shutdown_sess          = tcm_qla2xxx_shutdown_sess,
1499 };
1500
1501 static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport)
1502 {
1503         int rc;
1504
1505         rc = btree_init32(&lport->lport_fcport_map);
1506         if (rc) {
1507                 pr_err("Unable to initialize lport->lport_fcport_map btree\n");
1508                 return rc;
1509         }
1510
1511         lport->lport_loopid_map = vmalloc(sizeof(struct tcm_qla2xxx_fc_loopid) *
1512                                 65536);
1513         if (!lport->lport_loopid_map) {
1514                 pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n",
1515                     sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1516                 btree_destroy32(&lport->lport_fcport_map);
1517                 return -ENOMEM;
1518         }
1519         memset(lport->lport_loopid_map, 0, sizeof(struct tcm_qla2xxx_fc_loopid)
1520                * 65536);
1521         pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n",
1522                sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1523         return 0;
1524 }
1525
1526 static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha)
1527 {
1528         struct qla_hw_data *ha = vha->hw;
1529         struct tcm_qla2xxx_lport *lport;
1530         /*
1531          * Setup local pointer to vha, NPIV VP pointer (if present) and
1532          * vha->tcm_lport pointer
1533          */
1534         lport = (struct tcm_qla2xxx_lport *)ha->tgt.target_lport_ptr;
1535         lport->qla_vha = vha;
1536
1537         return 0;
1538 }
1539
1540 static struct se_wwn *tcm_qla2xxx_make_lport(
1541         struct target_fabric_configfs *tf,
1542         struct config_group *group,
1543         const char *name)
1544 {
1545         struct tcm_qla2xxx_lport *lport;
1546         u64 wwpn;
1547         int ret = -ENODEV;
1548
1549         if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0)
1550                 return ERR_PTR(-EINVAL);
1551
1552         lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1553         if (!lport) {
1554                 pr_err("Unable to allocate struct tcm_qla2xxx_lport\n");
1555                 return ERR_PTR(-ENOMEM);
1556         }
1557         lport->lport_wwpn = wwpn;
1558         tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN,
1559                                 wwpn);
1560
1561         ret = tcm_qla2xxx_init_lport(lport);
1562         if (ret != 0)
1563                 goto out;
1564
1565         ret = qlt_lport_register(&tcm_qla2xxx_template, wwpn,
1566                                 tcm_qla2xxx_lport_register_cb, lport);
1567         if (ret != 0)
1568                 goto out_lport;
1569
1570         return &lport->lport_wwn;
1571 out_lport:
1572         vfree(lport->lport_loopid_map);
1573         btree_destroy32(&lport->lport_fcport_map);
1574 out:
1575         kfree(lport);
1576         return ERR_PTR(ret);
1577 }
1578
1579 static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn)
1580 {
1581         struct tcm_qla2xxx_lport *lport = container_of(wwn,
1582                         struct tcm_qla2xxx_lport, lport_wwn);
1583         struct scsi_qla_host *vha = lport->qla_vha;
1584         struct qla_hw_data *ha = vha->hw;
1585         struct se_node_acl *node;
1586         u32 key = 0;
1587
1588         /*
1589          * Call into qla2x_target.c LLD logic to complete the
1590          * shutdown of struct qla_tgt after the call to
1591          * qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above..
1592          */
1593         if (ha->tgt.qla_tgt && !ha->tgt.qla_tgt->tgt_stopped)
1594                 qlt_stop_phase2(ha->tgt.qla_tgt);
1595
1596         qlt_lport_deregister(vha);
1597
1598         vfree(lport->lport_loopid_map);
1599         btree_for_each_safe32(&lport->lport_fcport_map, key, node)
1600                 btree_remove32(&lport->lport_fcport_map, key);
1601         btree_destroy32(&lport->lport_fcport_map);
1602         kfree(lport);
1603 }
1604
1605 static struct se_wwn *tcm_qla2xxx_npiv_make_lport(
1606         struct target_fabric_configfs *tf,
1607         struct config_group *group,
1608         const char *name)
1609 {
1610         struct tcm_qla2xxx_lport *lport;
1611         u64 npiv_wwpn, npiv_wwnn;
1612         int ret;
1613
1614         if (tcm_qla2xxx_npiv_parse_wwn(name, strlen(name)+1,
1615                                 &npiv_wwpn, &npiv_wwnn) < 0)
1616                 return ERR_PTR(-EINVAL);
1617
1618         lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1619         if (!lport) {
1620                 pr_err("Unable to allocate struct tcm_qla2xxx_lport for NPIV\n");
1621                 return ERR_PTR(-ENOMEM);
1622         }
1623         lport->lport_npiv_wwpn = npiv_wwpn;
1624         lport->lport_npiv_wwnn = npiv_wwnn;
1625         tcm_qla2xxx_npiv_format_wwn(&lport->lport_npiv_name[0],
1626                         TCM_QLA2XXX_NAMELEN, npiv_wwpn, npiv_wwnn);
1627
1628 /* FIXME: tcm_qla2xxx_npiv_make_lport */
1629         ret = -ENOSYS;
1630         if (ret != 0)
1631                 goto out;
1632
1633         return &lport->lport_wwn;
1634 out:
1635         kfree(lport);
1636         return ERR_PTR(ret);
1637 }
1638
1639 static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn)
1640 {
1641         struct tcm_qla2xxx_lport *lport = container_of(wwn,
1642                         struct tcm_qla2xxx_lport, lport_wwn);
1643         struct scsi_qla_host *vha = lport->qla_vha;
1644         struct Scsi_Host *sh = vha->host;
1645         /*
1646          * Notify libfc that we want to release the lport->npiv_vport
1647          */
1648         fc_vport_terminate(lport->npiv_vport);
1649
1650         scsi_host_put(sh);
1651         kfree(lport);
1652 }
1653
1654
1655 static ssize_t tcm_qla2xxx_wwn_show_attr_version(
1656         struct target_fabric_configfs *tf,
1657         char *page)
1658 {
1659         return sprintf(page,
1660             "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s on "
1661             UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname,
1662             utsname()->machine);
1663 }
1664
1665 TF_WWN_ATTR_RO(tcm_qla2xxx, version);
1666
1667 static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = {
1668         &tcm_qla2xxx_wwn_version.attr,
1669         NULL,
1670 };
1671
1672 static struct target_core_fabric_ops tcm_qla2xxx_ops = {
1673         .get_fabric_name                = tcm_qla2xxx_get_fabric_name,
1674         .get_fabric_proto_ident         = tcm_qla2xxx_get_fabric_proto_ident,
1675         .tpg_get_wwn                    = tcm_qla2xxx_get_fabric_wwn,
1676         .tpg_get_tag                    = tcm_qla2xxx_get_tag,
1677         .tpg_get_default_depth          = tcm_qla2xxx_get_default_depth,
1678         .tpg_get_pr_transport_id        = tcm_qla2xxx_get_pr_transport_id,
1679         .tpg_get_pr_transport_id_len    = tcm_qla2xxx_get_pr_transport_id_len,
1680         .tpg_parse_pr_out_transport_id  = tcm_qla2xxx_parse_pr_out_transport_id,
1681         .tpg_check_demo_mode            = tcm_qla2xxx_check_demo_mode,
1682         .tpg_check_demo_mode_cache      = tcm_qla2xxx_check_demo_mode_cache,
1683         .tpg_check_demo_mode_write_protect =
1684                                         tcm_qla2xxx_check_demo_write_protect,
1685         .tpg_check_prod_mode_write_protect =
1686                                         tcm_qla2xxx_check_prod_write_protect,
1687         .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_true,
1688         .tpg_alloc_fabric_acl           = tcm_qla2xxx_alloc_fabric_acl,
1689         .tpg_release_fabric_acl         = tcm_qla2xxx_release_fabric_acl,
1690         .tpg_get_inst_index             = tcm_qla2xxx_tpg_get_inst_index,
1691         .new_cmd_map                    = NULL,
1692         .check_stop_free                = tcm_qla2xxx_check_stop_free,
1693         .release_cmd                    = tcm_qla2xxx_release_cmd,
1694         .put_session                    = tcm_qla2xxx_put_session,
1695         .shutdown_session               = tcm_qla2xxx_shutdown_session,
1696         .close_session                  = tcm_qla2xxx_close_session,
1697         .sess_get_index                 = tcm_qla2xxx_sess_get_index,
1698         .sess_get_initiator_sid         = NULL,
1699         .write_pending                  = tcm_qla2xxx_write_pending,
1700         .write_pending_status           = tcm_qla2xxx_write_pending_status,
1701         .set_default_node_attributes    = tcm_qla2xxx_set_default_node_attrs,
1702         .get_task_tag                   = tcm_qla2xxx_get_task_tag,
1703         .get_cmd_state                  = tcm_qla2xxx_get_cmd_state,
1704         .queue_data_in                  = tcm_qla2xxx_queue_data_in,
1705         .queue_status                   = tcm_qla2xxx_queue_status,
1706         .queue_tm_rsp                   = tcm_qla2xxx_queue_tm_rsp,
1707         .get_fabric_sense_len           = tcm_qla2xxx_get_fabric_sense_len,
1708         .set_fabric_sense_len           = tcm_qla2xxx_set_fabric_sense_len,
1709         /*
1710          * Setup function pointers for generic logic in
1711          * target_core_fabric_configfs.c
1712          */
1713         .fabric_make_wwn                = tcm_qla2xxx_make_lport,
1714         .fabric_drop_wwn                = tcm_qla2xxx_drop_lport,
1715         .fabric_make_tpg                = tcm_qla2xxx_make_tpg,
1716         .fabric_drop_tpg                = tcm_qla2xxx_drop_tpg,
1717         .fabric_post_link               = NULL,
1718         .fabric_pre_unlink              = NULL,
1719         .fabric_make_np                 = NULL,
1720         .fabric_drop_np                 = NULL,
1721         .fabric_make_nodeacl            = tcm_qla2xxx_make_nodeacl,
1722         .fabric_drop_nodeacl            = tcm_qla2xxx_drop_nodeacl,
1723 };
1724
1725 static struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = {
1726         .get_fabric_name                = tcm_qla2xxx_npiv_get_fabric_name,
1727         .get_fabric_proto_ident         = tcm_qla2xxx_get_fabric_proto_ident,
1728         .tpg_get_wwn                    = tcm_qla2xxx_npiv_get_fabric_wwn,
1729         .tpg_get_tag                    = tcm_qla2xxx_get_tag,
1730         .tpg_get_default_depth          = tcm_qla2xxx_get_default_depth,
1731         .tpg_get_pr_transport_id        = tcm_qla2xxx_get_pr_transport_id,
1732         .tpg_get_pr_transport_id_len    = tcm_qla2xxx_get_pr_transport_id_len,
1733         .tpg_parse_pr_out_transport_id  = tcm_qla2xxx_parse_pr_out_transport_id,
1734         .tpg_check_demo_mode            = tcm_qla2xxx_check_false,
1735         .tpg_check_demo_mode_cache      = tcm_qla2xxx_check_true,
1736         .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_true,
1737         .tpg_check_prod_mode_write_protect = tcm_qla2xxx_check_false,
1738         .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_true,
1739         .tpg_alloc_fabric_acl           = tcm_qla2xxx_alloc_fabric_acl,
1740         .tpg_release_fabric_acl         = tcm_qla2xxx_release_fabric_acl,
1741         .tpg_get_inst_index             = tcm_qla2xxx_tpg_get_inst_index,
1742         .release_cmd                    = tcm_qla2xxx_release_cmd,
1743         .put_session                    = tcm_qla2xxx_put_session,
1744         .shutdown_session               = tcm_qla2xxx_shutdown_session,
1745         .close_session                  = tcm_qla2xxx_close_session,
1746         .sess_get_index                 = tcm_qla2xxx_sess_get_index,
1747         .sess_get_initiator_sid         = NULL,
1748         .write_pending                  = tcm_qla2xxx_write_pending,
1749         .write_pending_status           = tcm_qla2xxx_write_pending_status,
1750         .set_default_node_attributes    = tcm_qla2xxx_set_default_node_attrs,
1751         .get_task_tag                   = tcm_qla2xxx_get_task_tag,
1752         .get_cmd_state                  = tcm_qla2xxx_get_cmd_state,
1753         .queue_data_in                  = tcm_qla2xxx_queue_data_in,
1754         .queue_status                   = tcm_qla2xxx_queue_status,
1755         .queue_tm_rsp                   = tcm_qla2xxx_queue_tm_rsp,
1756         .get_fabric_sense_len           = tcm_qla2xxx_get_fabric_sense_len,
1757         .set_fabric_sense_len           = tcm_qla2xxx_set_fabric_sense_len,
1758         /*
1759          * Setup function pointers for generic logic in
1760          * target_core_fabric_configfs.c
1761          */
1762         .fabric_make_wwn                = tcm_qla2xxx_npiv_make_lport,
1763         .fabric_drop_wwn                = tcm_qla2xxx_npiv_drop_lport,
1764         .fabric_make_tpg                = tcm_qla2xxx_npiv_make_tpg,
1765         .fabric_drop_tpg                = tcm_qla2xxx_drop_tpg,
1766         .fabric_post_link               = NULL,
1767         .fabric_pre_unlink              = NULL,
1768         .fabric_make_np                 = NULL,
1769         .fabric_drop_np                 = NULL,
1770         .fabric_make_nodeacl            = tcm_qla2xxx_make_nodeacl,
1771         .fabric_drop_nodeacl            = tcm_qla2xxx_drop_nodeacl,
1772 };
1773
1774 static int tcm_qla2xxx_register_configfs(void)
1775 {
1776         struct target_fabric_configfs *fabric, *npiv_fabric;
1777         int ret;
1778
1779         pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on "
1780             UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname,
1781             utsname()->machine);
1782         /*
1783          * Register the top level struct config_item_type with TCM core
1784          */
1785         fabric = target_fabric_configfs_init(THIS_MODULE, "qla2xxx");
1786         if (IS_ERR(fabric)) {
1787                 pr_err("target_fabric_configfs_init() failed\n");
1788                 return PTR_ERR(fabric);
1789         }
1790         /*
1791          * Setup fabric->tf_ops from our local tcm_qla2xxx_ops
1792          */
1793         fabric->tf_ops = tcm_qla2xxx_ops;
1794         /*
1795          * Setup default attribute lists for various fabric->tf_cit_tmpl
1796          */
1797         TF_CIT_TMPL(fabric)->tfc_wwn_cit.ct_attrs = tcm_qla2xxx_wwn_attrs;
1798         TF_CIT_TMPL(fabric)->tfc_tpg_base_cit.ct_attrs = tcm_qla2xxx_tpg_attrs;
1799         TF_CIT_TMPL(fabric)->tfc_tpg_attrib_cit.ct_attrs =
1800                                                 tcm_qla2xxx_tpg_attrib_attrs;
1801         TF_CIT_TMPL(fabric)->tfc_tpg_param_cit.ct_attrs = NULL;
1802         TF_CIT_TMPL(fabric)->tfc_tpg_np_base_cit.ct_attrs = NULL;
1803         TF_CIT_TMPL(fabric)->tfc_tpg_nacl_base_cit.ct_attrs = NULL;
1804         TF_CIT_TMPL(fabric)->tfc_tpg_nacl_attrib_cit.ct_attrs = NULL;
1805         TF_CIT_TMPL(fabric)->tfc_tpg_nacl_auth_cit.ct_attrs = NULL;
1806         TF_CIT_TMPL(fabric)->tfc_tpg_nacl_param_cit.ct_attrs = NULL;
1807         /*
1808          * Register the fabric for use within TCM
1809          */
1810         ret = target_fabric_configfs_register(fabric);
1811         if (ret < 0) {
1812                 pr_err("target_fabric_configfs_register() failed for TCM_QLA2XXX\n");
1813                 return ret;
1814         }
1815         /*
1816          * Setup our local pointer to *fabric
1817          */
1818         tcm_qla2xxx_fabric_configfs = fabric;
1819         pr_debug("TCM_QLA2XXX[0] - Set fabric -> tcm_qla2xxx_fabric_configfs\n");
1820
1821         /*
1822          * Register the top level struct config_item_type for NPIV with TCM core
1823          */
1824         npiv_fabric = target_fabric_configfs_init(THIS_MODULE, "qla2xxx_npiv");
1825         if (IS_ERR(npiv_fabric)) {
1826                 pr_err("target_fabric_configfs_init() failed\n");
1827                 ret = PTR_ERR(npiv_fabric);
1828                 goto out_fabric;
1829         }
1830         /*
1831          * Setup fabric->tf_ops from our local tcm_qla2xxx_npiv_ops
1832          */
1833         npiv_fabric->tf_ops = tcm_qla2xxx_npiv_ops;
1834         /*
1835          * Setup default attribute lists for various npiv_fabric->tf_cit_tmpl
1836          */
1837         TF_CIT_TMPL(npiv_fabric)->tfc_wwn_cit.ct_attrs = tcm_qla2xxx_wwn_attrs;
1838         TF_CIT_TMPL(npiv_fabric)->tfc_tpg_base_cit.ct_attrs = NULL;
1839         TF_CIT_TMPL(npiv_fabric)->tfc_tpg_attrib_cit.ct_attrs = NULL;
1840         TF_CIT_TMPL(npiv_fabric)->tfc_tpg_param_cit.ct_attrs = NULL;
1841         TF_CIT_TMPL(npiv_fabric)->tfc_tpg_np_base_cit.ct_attrs = NULL;
1842         TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_base_cit.ct_attrs = NULL;
1843         TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_attrib_cit.ct_attrs = NULL;
1844         TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_auth_cit.ct_attrs = NULL;
1845         TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_param_cit.ct_attrs = NULL;
1846         /*
1847          * Register the npiv_fabric for use within TCM
1848          */
1849         ret = target_fabric_configfs_register(npiv_fabric);
1850         if (ret < 0) {
1851                 pr_err("target_fabric_configfs_register() failed for TCM_QLA2XXX\n");
1852                 goto out_fabric;
1853         }
1854         /*
1855          * Setup our local pointer to *npiv_fabric
1856          */
1857         tcm_qla2xxx_npiv_fabric_configfs = npiv_fabric;
1858         pr_debug("TCM_QLA2XXX[0] - Set fabric -> tcm_qla2xxx_npiv_fabric_configfs\n");
1859
1860         tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free",
1861                                                 WQ_MEM_RECLAIM, 0);
1862         if (!tcm_qla2xxx_free_wq) {
1863                 ret = -ENOMEM;
1864                 goto out_fabric_npiv;
1865         }
1866
1867         tcm_qla2xxx_cmd_wq = alloc_workqueue("tcm_qla2xxx_cmd", 0, 0);
1868         if (!tcm_qla2xxx_cmd_wq) {
1869                 ret = -ENOMEM;
1870                 goto out_free_wq;
1871         }
1872
1873         return 0;
1874
1875 out_free_wq:
1876         destroy_workqueue(tcm_qla2xxx_free_wq);
1877 out_fabric_npiv:
1878         target_fabric_configfs_deregister(tcm_qla2xxx_npiv_fabric_configfs);
1879 out_fabric:
1880         target_fabric_configfs_deregister(tcm_qla2xxx_fabric_configfs);
1881         return ret;
1882 }
1883
1884 static void tcm_qla2xxx_deregister_configfs(void)
1885 {
1886         destroy_workqueue(tcm_qla2xxx_cmd_wq);
1887         destroy_workqueue(tcm_qla2xxx_free_wq);
1888
1889         target_fabric_configfs_deregister(tcm_qla2xxx_fabric_configfs);
1890         tcm_qla2xxx_fabric_configfs = NULL;
1891         pr_debug("TCM_QLA2XXX[0] - Cleared tcm_qla2xxx_fabric_configfs\n");
1892
1893         target_fabric_configfs_deregister(tcm_qla2xxx_npiv_fabric_configfs);
1894         tcm_qla2xxx_npiv_fabric_configfs = NULL;
1895         pr_debug("TCM_QLA2XXX[0] - Cleared tcm_qla2xxx_npiv_fabric_configfs\n");
1896 }
1897
1898 static int __init tcm_qla2xxx_init(void)
1899 {
1900         int ret;
1901
1902         ret = tcm_qla2xxx_register_configfs();
1903         if (ret < 0)
1904                 return ret;
1905
1906         return 0;
1907 }
1908
1909 static void __exit tcm_qla2xxx_exit(void)
1910 {
1911         tcm_qla2xxx_deregister_configfs();
1912 }
1913
1914 MODULE_DESCRIPTION("TCM QLA2XXX series NPIV enabled fabric driver");
1915 MODULE_LICENSE("GPL");
1916 module_init(tcm_qla2xxx_init);
1917 module_exit(tcm_qla2xxx_exit);