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  * (c) Copyright 2010-2013 Datera, Inc.
   6  *
   7  * Author: Nicholas A. Bellinger <nab@daterainc.com>
   8  *
   9  * tcm_qla2xxx_parse_wwn() and tcm_qla2xxx_format_wwn() contains code from
  10  * the TCM_FC / Open-FCoE.org fabric module.
  11  *
  12  * Copyright (c) 2010 Cisco Systems, Inc
  13  *
  14  * This program is free software; you can redistribute it and/or modify
  15  * it under the terms of the GNU General Public License as published by
  16  * the Free Software Foundation; either version 2 of the License, or
  17  * (at your option) any later version.
  18  *
  19  * This program is distributed in the hope that it will be useful,
  20  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22  * GNU General Public License for more details.
  23  ****************************************************************************/
  24
  25
  26 #include <linux/module.h>
  27 #include <linux/moduleparam.h>
  28 #include <generated/utsrelease.h>
  29 #include <linux/utsname.h>
  30 #include <linux/init.h>
  31 #include <linux/list.h>
  32 #include <linux/slab.h>
  33 #include <linux/kthread.h>
  34 #include <linux/types.h>
  35 #include <linux/string.h>
  36 #include <linux/configfs.h>
  37 #include <linux/ctype.h>
  38 #include <asm/unaligned.h>
  39 #include <scsi/scsi.h>
  40 #include <scsi/scsi_host.h>
  41 #include <scsi/scsi_device.h>
  42 #include <scsi/scsi_cmnd.h>
  43 #include <target/target_core_base.h>
  44 #include <target/target_core_fabric.h>
  45 #include <target/target_core_fabric_configfs.h>
  46 #include <target/target_core_configfs.h>
  47 #include <target/configfs_macros.h>
  48
  49 #include "qla_def.h"
  50 #include "qla_target.h"
  51 #include "tcm_qla2xxx.h"
  52
  53 static struct workqueue_struct *tcm_qla2xxx_free_wq;
  54 static struct workqueue_struct *tcm_qla2xxx_cmd_wq;
  55
  56 /* Local pointer to allocated TCM configfs fabric module */
  57 static struct target_fabric_configfs *tcm_qla2xxx_fabric_configfs;
  58 static struct target_fabric_configfs *tcm_qla2xxx_npiv_fabric_configfs;
  59
  60 /*
  61  * Parse WWN.
  62  * If strict, we require lower-case hex and colon separators to be sure
  63  * the name is the same as what would be generated by ft_format_wwn()
  64  * so the name and wwn are mapped one-to-one.
  65  */
  66 static ssize_t tcm_qla2xxx_parse_wwn(const char *name, u64 *wwn, int strict)
  67 {
  68         const char *cp;
  69         char c;
  70         u32 nibble;
  71         u32 byte = 0;
  72         u32 pos = 0;
  73         u32 err;
  74
  75         *wwn = 0;
  76         for (cp = name; cp < &name[TCM_QLA2XXX_NAMELEN - 1]; cp++) {
  77                 c = *cp;
  78                 if (c == '\n' && cp[1] == '\0')
  79                         continue;
  80                 if (strict && pos++ == 2 && byte++ < 7) {
  81                         pos = 0;
  82                         if (c == ':')
  83                                 continue;
  84                         err = 1;
  85                         goto fail;
  86                 }
  87                 if (c == '\0') {
  88                         err = 2;
  89                         if (strict && byte != 8)
  90                                 goto fail;
  91                         return cp - name;
  92                 }
  93                 err = 3;
  94                 if (isdigit(c))
  95                         nibble = c - '0';
  96                 else if (isxdigit(c) && (islower(c) || !strict))
  97                         nibble = tolower(c) - 'a' + 10;
  98                 else
  99                         goto fail;
 100                 *wwn = (*wwn << 4) | nibble;
 101         }
 102         err = 4;
 103 fail:
 104         pr_debug("err %u len %zu pos %u byte %u\n",
 105                         err, cp - name, pos, byte);
 106         return -1;
 107 }
 108
 109 static ssize_t tcm_qla2xxx_format_wwn(char *buf, size_t len, u64 wwn)
 110 {
 111         u8 b[8];
 112
 113         put_unaligned_be64(wwn, b);
 114         return snprintf(buf, len,
 115                 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x",
 116                 b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7]);
 117 }
 118
 119 static char *tcm_qla2xxx_get_fabric_name(void)
 120 {
 121         return "qla2xxx";
 122 }
 123
 124 /*
 125  * From drivers/scsi/scsi_transport_fc.c:fc_parse_wwn
 126  */
 127 static int tcm_qla2xxx_npiv_extract_wwn(const char *ns, u64 *nm)
 128 {
 129         unsigned int i, j;
 130         u8 wwn[8];
 131
 132         memset(wwn, 0, sizeof(wwn));
 133
 134         /* Validate and store the new name */
 135         for (i = 0, j = 0; i < 16; i++) {
 136                 int value;
 137
 138                 value = hex_to_bin(*ns++);
 139                 if (value >= 0)
 140                         j = (j << 4) | value;
 141                 else
 142                         return -EINVAL;
 143
 144                 if (i % 2) {
 145                         wwn[i/2] = j & 0xff;
 146                         j = 0;
 147                 }
 148         }
 149
 150         *nm = wwn_to_u64(wwn);
 151         return 0;
 152 }
 153
 154 /*
 155  * This parsing logic follows drivers/scsi/scsi_transport_fc.c:
 156  * store_fc_host_vport_create()
 157  */
 158 static int tcm_qla2xxx_npiv_parse_wwn(
 159         const char *name,
 160         size_t count,
 161         u64 *wwpn,
 162         u64 *wwnn)
 163 {
 164         unsigned int cnt = count;
 165         int rc;
 166
 167         *wwpn = 0;
 168         *wwnn = 0;
 169
 170         /* count may include a LF at end of string */
 171         if (name[cnt-1] == '\n' || name[cnt-1] == 0)
 172                 cnt--;
 173
 174         /* validate we have enough characters for WWPN */
 175         if ((cnt != (16+1+16)) || (name[16] != ':'))
 176                 return -EINVAL;
 177
 178         rc = tcm_qla2xxx_npiv_extract_wwn(&name[0], wwpn);
 179         if (rc != 0)
 180                 return rc;
 181
 182         rc = tcm_qla2xxx_npiv_extract_wwn(&name[17], wwnn);
 183         if (rc != 0)
 184                 return rc;
 185
 186         return 0;
 187 }
 188
 189 static char *tcm_qla2xxx_npiv_get_fabric_name(void)
 190 {
 191         return "qla2xxx_npiv";
 192 }
 193
 194 static u8 tcm_qla2xxx_get_fabric_proto_ident(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         struct tcm_qla2xxx_lport *lport = tpg->lport;
 199         u8 proto_id;
 200
 201         switch (lport->lport_proto_id) {
 202         case SCSI_PROTOCOL_FCP:
 203         default:
 204                 proto_id = fc_get_fabric_proto_ident(se_tpg);
 205                 break;
 206         }
 207
 208         return proto_id;
 209 }
 210
 211 static char *tcm_qla2xxx_get_fabric_wwn(struct se_portal_group *se_tpg)
 212 {
 213         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 214                                 struct tcm_qla2xxx_tpg, se_tpg);
 215         struct tcm_qla2xxx_lport *lport = tpg->lport;
 216
 217         return lport->lport_naa_name;
 218 }
 219
 220 static u16 tcm_qla2xxx_get_tag(struct se_portal_group *se_tpg)
 221 {
 222         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 223                                 struct tcm_qla2xxx_tpg, se_tpg);
 224         return tpg->lport_tpgt;
 225 }
 226
 227 static u32 tcm_qla2xxx_get_default_depth(struct se_portal_group *se_tpg)
 228 {
 229         return 1;
 230 }
 231
 232 static u32 tcm_qla2xxx_get_pr_transport_id(
 233         struct se_portal_group *se_tpg,
 234         struct se_node_acl *se_nacl,
 235         struct t10_pr_registration *pr_reg,
 236         int *format_code,
 237         unsigned char *buf)
 238 {
 239         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 240                                 struct tcm_qla2xxx_tpg, se_tpg);
 241         struct tcm_qla2xxx_lport *lport = tpg->lport;
 242         int ret = 0;
 243
 244         switch (lport->lport_proto_id) {
 245         case SCSI_PROTOCOL_FCP:
 246         default:
 247                 ret = fc_get_pr_transport_id(se_tpg, se_nacl, pr_reg,
 248                                         format_code, buf);
 249                 break;
 250         }
 251
 252         return ret;
 253 }
 254
 255 static u32 tcm_qla2xxx_get_pr_transport_id_len(
 256         struct se_portal_group *se_tpg,
 257         struct se_node_acl *se_nacl,
 258         struct t10_pr_registration *pr_reg,
 259         int *format_code)
 260 {
 261         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 262                                 struct tcm_qla2xxx_tpg, se_tpg);
 263         struct tcm_qla2xxx_lport *lport = tpg->lport;
 264         int ret = 0;
 265
 266         switch (lport->lport_proto_id) {
 267         case SCSI_PROTOCOL_FCP:
 268         default:
 269                 ret = fc_get_pr_transport_id_len(se_tpg, se_nacl, pr_reg,
 270                                         format_code);
 271                 break;
 272         }
 273
 274         return ret;
 275 }
 276
 277 static char *tcm_qla2xxx_parse_pr_out_transport_id(
 278         struct se_portal_group *se_tpg,
 279         const char *buf,
 280         u32 *out_tid_len,
 281         char **port_nexus_ptr)
 282 {
 283         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 284                                 struct tcm_qla2xxx_tpg, se_tpg);
 285         struct tcm_qla2xxx_lport *lport = tpg->lport;
 286         char *tid = NULL;
 287
 288         switch (lport->lport_proto_id) {
 289         case SCSI_PROTOCOL_FCP:
 290         default:
 291                 tid = fc_parse_pr_out_transport_id(se_tpg, buf, out_tid_len,
 292                                         port_nexus_ptr);
 293                 break;
 294         }
 295
 296         return tid;
 297 }
 298
 299 static int tcm_qla2xxx_check_demo_mode(struct se_portal_group *se_tpg)
 300 {
 301         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 302                                 struct tcm_qla2xxx_tpg, se_tpg);
 303
 304         return tpg->tpg_attrib.generate_node_acls;
 305 }
 306
 307 static int tcm_qla2xxx_check_demo_mode_cache(struct se_portal_group *se_tpg)
 308 {
 309         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 310                                 struct tcm_qla2xxx_tpg, se_tpg);
 311
 312         return tpg->tpg_attrib.cache_dynamic_acls;
 313 }
 314
 315 static int tcm_qla2xxx_check_demo_write_protect(struct se_portal_group *se_tpg)
 316 {
 317         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 318                                 struct tcm_qla2xxx_tpg, se_tpg);
 319
 320         return tpg->tpg_attrib.demo_mode_write_protect;
 321 }
 322
 323 static int tcm_qla2xxx_check_prod_write_protect(struct se_portal_group *se_tpg)
 324 {
 325         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 326                                 struct tcm_qla2xxx_tpg, se_tpg);
 327
 328         return tpg->tpg_attrib.prod_mode_write_protect;
 329 }
 330
 331 static int tcm_qla2xxx_check_demo_mode_login_only(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 tpg->tpg_attrib.demo_mode_login_only;
 337 }
 338
 339 static struct se_node_acl *tcm_qla2xxx_alloc_fabric_acl(
 340         struct se_portal_group *se_tpg)
 341 {
 342         struct tcm_qla2xxx_nacl *nacl;
 343
 344         nacl = kzalloc(sizeof(struct tcm_qla2xxx_nacl), GFP_KERNEL);
 345         if (!nacl) {
 346                 pr_err("Unable to allocate struct tcm_qla2xxx_nacl\n");
 347                 return NULL;
 348         }
 349
 350         return &nacl->se_node_acl;
 351 }
 352
 353 static void tcm_qla2xxx_release_fabric_acl(
 354         struct se_portal_group *se_tpg,
 355         struct se_node_acl *se_nacl)
 356 {
 357         struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
 358                         struct tcm_qla2xxx_nacl, se_node_acl);
 359         kfree(nacl);
 360 }
 361
 362 static u32 tcm_qla2xxx_tpg_get_inst_index(struct se_portal_group *se_tpg)
 363 {
 364         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 365                                 struct tcm_qla2xxx_tpg, se_tpg);
 366
 367         return tpg->lport_tpgt;
 368 }
 369
 370 static void tcm_qla2xxx_complete_mcmd(struct work_struct *work)
 371 {
 372         struct qla_tgt_mgmt_cmd *mcmd = container_of(work,
 373                         struct qla_tgt_mgmt_cmd, free_work);
 374
 375         transport_generic_free_cmd(&mcmd->se_cmd, 0);
 376 }
 377
 378 /*
 379  * Called from qla_target_template->free_mcmd(), and will call
 380  * tcm_qla2xxx_release_cmd() via normal struct target_core_fabric_ops
 381  * release callback.  qla_hw_data->hardware_lock is expected to be held
 382  */
 383 static void tcm_qla2xxx_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
 384 {
 385         INIT_WORK(&mcmd->free_work, tcm_qla2xxx_complete_mcmd);
 386         queue_work(tcm_qla2xxx_free_wq, &mcmd->free_work);
 387 }
 388
 389 static void tcm_qla2xxx_complete_free(struct work_struct *work)
 390 {
 391         struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
 392
 393         cmd->cmd_in_wq = 0;
 394
 395         WARN_ON(cmd->cmd_flags &  BIT_16);
 396
 397         cmd->cmd_flags |= BIT_16;
 398         transport_generic_free_cmd(&cmd->se_cmd, 0);
 399 }
 400
 401 /*
 402  * Called from qla_target_template->free_cmd(), and will call
 403  * tcm_qla2xxx_release_cmd via normal struct target_core_fabric_ops
 404  * release callback.  qla_hw_data->hardware_lock is expected to be held
 405  */
 406 static void tcm_qla2xxx_free_cmd(struct qla_tgt_cmd *cmd)
 407 {
 408         cmd->cmd_in_wq = 1;
 409         INIT_WORK(&cmd->work, tcm_qla2xxx_complete_free);
 410         queue_work(tcm_qla2xxx_free_wq, &cmd->work);
 411 }
 412
 413 /*
 414  * Called from struct target_core_fabric_ops->check_stop_free() context
 415  */
 416 static int tcm_qla2xxx_check_stop_free(struct se_cmd *se_cmd)
 417 {
 418         struct qla_tgt_cmd *cmd;
 419
 420         if ((se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) == 0) {
 421                 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
 422                 cmd->cmd_flags |= BIT_14;
 423         }
 424
 425         return target_put_sess_cmd(se_cmd->se_sess, se_cmd);
 426 }
 427
 428 /* tcm_qla2xxx_release_cmd - Callback from TCM Core to release underlying
 429  * fabric descriptor @se_cmd command to release
 430  */
 431 static void tcm_qla2xxx_release_cmd(struct se_cmd *se_cmd)
 432 {
 433         struct qla_tgt_cmd *cmd;
 434
 435         if (se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) {
 436                 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
 437                                 struct qla_tgt_mgmt_cmd, se_cmd);
 438                 qlt_free_mcmd(mcmd);
 439                 return;
 440         }
 441
 442         cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
 443         qlt_free_cmd(cmd);
 444 }
 445
 446 static int tcm_qla2xxx_shutdown_session(struct se_session *se_sess)
 447 {
 448         struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
 449         struct scsi_qla_host *vha;
 450         unsigned long flags;
 451
 452         BUG_ON(!sess);
 453         vha = sess->vha;
 454
 455         spin_lock_irqsave(&vha->hw->hardware_lock, flags);
 456         target_sess_cmd_list_set_waiting(se_sess);
 457         spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
 458
 459         return 1;
 460 }
 461
 462 static void tcm_qla2xxx_close_session(struct se_session *se_sess)
 463 {
 464         struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
 465         struct scsi_qla_host *vha;
 466         unsigned long flags;
 467
 468         BUG_ON(!sess);
 469         vha = sess->vha;
 470
 471         spin_lock_irqsave(&vha->hw->hardware_lock, flags);
 472         qlt_unreg_sess(sess);
 473         spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
 474 }
 475
 476 static u32 tcm_qla2xxx_sess_get_index(struct se_session *se_sess)
 477 {
 478         return 0;
 479 }
 480
 481 static int tcm_qla2xxx_write_pending(struct se_cmd *se_cmd)
 482 {
 483         struct qla_tgt_cmd *cmd = container_of(se_cmd,
 484                                 struct qla_tgt_cmd, se_cmd);
 485
 486         cmd->bufflen = se_cmd->data_length;
 487         cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
 488
 489         cmd->sg_cnt = se_cmd->t_data_nents;
 490         cmd->sg = se_cmd->t_data_sg;
 491
 492         cmd->prot_sg_cnt = se_cmd->t_prot_nents;
 493         cmd->prot_sg = se_cmd->t_prot_sg;
 494         cmd->blk_sz  = se_cmd->se_dev->dev_attrib.block_size;
 495         se_cmd->pi_err = 0;
 496
 497         /*
 498          * qla_target.c:qlt_rdy_to_xfer() will call pci_map_sg() to setup
 499          * the SGL mappings into PCIe memory for incoming FCP WRITE data.
 500          */
 501         return qlt_rdy_to_xfer(cmd);
 502 }
 503
 504 static int tcm_qla2xxx_write_pending_status(struct se_cmd *se_cmd)
 505 {
 506         unsigned long flags;
 507         /*
 508          * Check for WRITE_PENDING status to determine if we need to wait for
 509          * CTIO aborts to be posted via hardware in tcm_qla2xxx_handle_data().
 510          */
 511         spin_lock_irqsave(&se_cmd->t_state_lock, flags);
 512         if (se_cmd->t_state == TRANSPORT_WRITE_PENDING ||
 513             se_cmd->t_state == TRANSPORT_COMPLETE_QF_WP) {
 514                 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
 515                 wait_for_completion_timeout(&se_cmd->t_transport_stop_comp,
 516                                                 3000);
 517                 return 0;
 518         }
 519         spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
 520
 521         return 0;
 522 }
 523
 524 static void tcm_qla2xxx_set_default_node_attrs(struct se_node_acl *nacl)
 525 {
 526         return;
 527 }
 528
 529 static u32 tcm_qla2xxx_get_task_tag(struct se_cmd *se_cmd)
 530 {
 531         struct qla_tgt_cmd *cmd;
 532
 533         /* check for task mgmt cmd */
 534         if (se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB)
 535                 return 0xffffffff;
 536
 537         cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
 538
 539         return cmd->tag;
 540 }
 541
 542 static int tcm_qla2xxx_get_cmd_state(struct se_cmd *se_cmd)
 543 {
 544         return 0;
 545 }
 546
 547 /*
 548  * Called from process context in qla_target.c:qlt_do_work() code
 549  */
 550 static int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd,
 551         unsigned char *cdb, uint32_t data_length, int fcp_task_attr,
 552         int data_dir, int bidi)
 553 {
 554         struct se_cmd *se_cmd = &cmd->se_cmd;
 555         struct se_session *se_sess;
 556         struct qla_tgt_sess *sess;
 557         int flags = TARGET_SCF_ACK_KREF;
 558
 559         if (bidi)
 560                 flags |= TARGET_SCF_BIDI_OP;
 561
 562         sess = cmd->sess;
 563         if (!sess) {
 564                 pr_err("Unable to locate struct qla_tgt_sess from qla_tgt_cmd\n");
 565                 return -EINVAL;
 566         }
 567
 568         se_sess = sess->se_sess;
 569         if (!se_sess) {
 570                 pr_err("Unable to locate active struct se_session\n");
 571                 return -EINVAL;
 572         }
 573
 574         return target_submit_cmd(se_cmd, se_sess, cdb, &cmd->sense_buffer[0],
 575                                 cmd->unpacked_lun, data_length, fcp_task_attr,
 576                                 data_dir, flags);
 577 }
 578
 579 static void tcm_qla2xxx_handle_data_work(struct work_struct *work)
 580 {
 581         struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
 582
 583         /*
 584          * Ensure that the complete FCP WRITE payload has been received.
 585          * Otherwise return an exception via CHECK_CONDITION status.
 586          */
 587         cmd->cmd_in_wq = 0;
 588         cmd->cmd_flags |= BIT_11;
 589         if (!cmd->write_data_transferred) {
 590                 /*
 591                  * Check if se_cmd has already been aborted via LUN_RESET, and
 592                  * waiting upon completion in tcm_qla2xxx_write_pending_status()
 593                  */
 594                 if (cmd->se_cmd.transport_state & CMD_T_ABORTED) {
 595                         complete(&cmd->se_cmd.t_transport_stop_comp);
 596                         return;
 597                 }
 598
 599                 if (cmd->se_cmd.pi_err)
 600                         transport_generic_request_failure(&cmd->se_cmd,
 601                                 cmd->se_cmd.pi_err);
 602                 else
 603                         transport_generic_request_failure(&cmd->se_cmd,
 604                                 TCM_CHECK_CONDITION_ABORT_CMD);
 605
 606                 return;
 607         }
 608
 609         return target_execute_cmd(&cmd->se_cmd);
 610 }
 611
 612 /*
 613  * Called from qla_target.c:qlt_do_ctio_completion()
 614  */
 615 static void tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd)
 616 {
 617         cmd->cmd_flags |= BIT_10;
 618         cmd->cmd_in_wq = 1;
 619         INIT_WORK(&cmd->work, tcm_qla2xxx_handle_data_work);
 620         queue_work(tcm_qla2xxx_free_wq, &cmd->work);
 621 }
 622
 623 static void tcm_qla2xxx_handle_dif_work(struct work_struct *work)
 624 {
 625         struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
 626
 627         /* take an extra kref to prevent cmd free too early.
 628          * need to wait for SCSI status/check condition to
 629          * finish responding generate by transport_generic_request_failure.
 630          */
 631         kref_get(&cmd->se_cmd.cmd_kref);
 632         transport_generic_request_failure(&cmd->se_cmd, cmd->se_cmd.pi_err);
 633 }
 634
 635 /*
 636  * Called from qla_target.c:qlt_do_ctio_completion()
 637  */
 638 static void tcm_qla2xxx_handle_dif_err(struct qla_tgt_cmd *cmd)
 639 {
 640         INIT_WORK(&cmd->work, tcm_qla2xxx_handle_dif_work);
 641         queue_work(tcm_qla2xxx_free_wq, &cmd->work);
 642 }
 643
 644 /*
 645  * Called from qla_target.c:qlt_issue_task_mgmt()
 646  */
 647 static int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *mcmd, uint32_t lun,
 648         uint8_t tmr_func, uint32_t tag)
 649 {
 650         struct qla_tgt_sess *sess = mcmd->sess;
 651         struct se_cmd *se_cmd = &mcmd->se_cmd;
 652
 653         return target_submit_tmr(se_cmd, sess->se_sess, NULL, lun, mcmd,
 654                         tmr_func, GFP_ATOMIC, tag, TARGET_SCF_ACK_KREF);
 655 }
 656
 657 static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd)
 658 {
 659         struct qla_tgt_cmd *cmd = container_of(se_cmd,
 660                                 struct qla_tgt_cmd, se_cmd);
 661
 662         cmd->cmd_flags |= BIT_4;
 663         cmd->bufflen = se_cmd->data_length;
 664         cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
 665         cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED);
 666
 667         cmd->sg_cnt = se_cmd->t_data_nents;
 668         cmd->sg = se_cmd->t_data_sg;
 669         cmd->offset = 0;
 670         cmd->cmd_flags |= BIT_3;
 671
 672         cmd->prot_sg_cnt = se_cmd->t_prot_nents;
 673         cmd->prot_sg = se_cmd->t_prot_sg;
 674         cmd->blk_sz  = se_cmd->se_dev->dev_attrib.block_size;
 675         se_cmd->pi_err = 0;
 676
 677         /*
 678          * Now queue completed DATA_IN the qla2xxx LLD and response ring
 679          */
 680         return qlt_xmit_response(cmd, QLA_TGT_XMIT_DATA|QLA_TGT_XMIT_STATUS,
 681                                 se_cmd->scsi_status);
 682 }
 683
 684 static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd)
 685 {
 686         struct qla_tgt_cmd *cmd = container_of(se_cmd,
 687                                 struct qla_tgt_cmd, se_cmd);
 688         int xmit_type = QLA_TGT_XMIT_STATUS;
 689
 690         cmd->bufflen = se_cmd->data_length;
 691         cmd->sg = NULL;
 692         cmd->sg_cnt = 0;
 693         cmd->offset = 0;
 694         cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
 695         cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED);
 696         if (cmd->cmd_flags &  BIT_5) {
 697                 pr_crit("Bit_5 already set for cmd = %p.\n", cmd);
 698                 dump_stack();
 699         }
 700         cmd->cmd_flags |= BIT_5;
 701
 702         if (se_cmd->data_direction == DMA_FROM_DEVICE) {
 703                 /*
 704                  * For FCP_READ with CHECK_CONDITION status, clear cmd->bufflen
 705                  * for qla_tgt_xmit_response LLD code
 706                  */
 707                 if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
 708                         se_cmd->se_cmd_flags &= ~SCF_OVERFLOW_BIT;
 709                         se_cmd->residual_count = 0;
 710                 }
 711                 se_cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT;
 712                 se_cmd->residual_count += se_cmd->data_length;
 713
 714                 cmd->bufflen = 0;
 715         }
 716         /*
 717          * Now queue status response to qla2xxx LLD code and response ring
 718          */
 719         return qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status);
 720 }
 721
 722 static void tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd)
 723 {
 724         struct se_tmr_req *se_tmr = se_cmd->se_tmr_req;
 725         struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
 726                                 struct qla_tgt_mgmt_cmd, se_cmd);
 727
 728         pr_debug("queue_tm_rsp: mcmd: %p func: 0x%02x response: 0x%02x\n",
 729                         mcmd, se_tmr->function, se_tmr->response);
 730         /*
 731          * Do translation between TCM TM response codes and
 732          * QLA2xxx FC TM response codes.
 733          */
 734         switch (se_tmr->response) {
 735         case TMR_FUNCTION_COMPLETE:
 736                 mcmd->fc_tm_rsp = FC_TM_SUCCESS;
 737                 break;
 738         case TMR_TASK_DOES_NOT_EXIST:
 739                 mcmd->fc_tm_rsp = FC_TM_BAD_CMD;
 740                 break;
 741         case TMR_FUNCTION_REJECTED:
 742                 mcmd->fc_tm_rsp = FC_TM_REJECT;
 743                 break;
 744         case TMR_LUN_DOES_NOT_EXIST:
 745         default:
 746                 mcmd->fc_tm_rsp = FC_TM_FAILED;
 747                 break;
 748         }
 749         /*
 750          * Queue the TM response to QLA2xxx LLD to build a
 751          * CTIO response packet.
 752          */
 753         qlt_xmit_tm_rsp(mcmd);
 754 }
 755
 756 static void tcm_qla2xxx_aborted_task(struct se_cmd *se_cmd)
 757 {
 758         struct qla_tgt_cmd *cmd = container_of(se_cmd,
 759                                 struct qla_tgt_cmd, se_cmd);
 760         struct scsi_qla_host *vha = cmd->vha;
 761         struct qla_hw_data *ha = vha->hw;
 762
 763         if (!cmd->sg_mapped)
 764                 return;
 765
 766         pci_unmap_sg(ha->pdev, cmd->sg, cmd->sg_cnt, cmd->dma_data_direction);
 767         cmd->sg_mapped = 0;
 768 }
 769
 770 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *,
 771                         struct tcm_qla2xxx_nacl *, struct qla_tgt_sess *);
 772 /*
 773  * Expected to be called with struct qla_hw_data->hardware_lock held
 774  */
 775 static void tcm_qla2xxx_clear_nacl_from_fcport_map(struct qla_tgt_sess *sess)
 776 {
 777         struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
 778         struct se_portal_group *se_tpg = se_nacl->se_tpg;
 779         struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
 780         struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
 781                                 struct tcm_qla2xxx_lport, lport_wwn);
 782         struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
 783                                 struct tcm_qla2xxx_nacl, se_node_acl);
 784         void *node;
 785
 786         pr_debug("fc_rport domain: port_id 0x%06x\n", nacl->nport_id);
 787
 788         node = btree_remove32(&lport->lport_fcport_map, nacl->nport_id);
 789         WARN_ON(node && (node != se_nacl));
 790
 791         pr_debug("Removed from fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%06x\n",
 792             se_nacl, nacl->nport_wwnn, nacl->nport_id);
 793         /*
 794          * Now clear the se_nacl and session pointers from our HW lport lookup
 795          * table mapping for this initiator's fabric S_ID and LOOP_ID entries.
 796          *
 797          * This is done ahead of callbacks into tcm_qla2xxx_free_session() ->
 798          * target_wait_for_sess_cmds() before the session waits for outstanding
 799          * I/O to complete, to avoid a race between session shutdown execution
 800          * and incoming ATIOs or TMRs picking up a stale se_node_act reference.
 801          */
 802         tcm_qla2xxx_clear_sess_lookup(lport, nacl, sess);
 803 }
 804
 805 static void tcm_qla2xxx_release_session(struct kref *kref)
 806 {
 807         struct se_session *se_sess = container_of(kref,
 808                         struct se_session, sess_kref);
 809
 810         qlt_unreg_sess(se_sess->fabric_sess_ptr);
 811 }
 812
 813 static void tcm_qla2xxx_put_session(struct se_session *se_sess)
 814 {
 815         struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
 816         struct qla_hw_data *ha = sess->vha->hw;
 817         unsigned long flags;
 818
 819         spin_lock_irqsave(&ha->hardware_lock, flags);
 820         kref_put(&se_sess->sess_kref, tcm_qla2xxx_release_session);
 821         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 822 }
 823
 824 static void tcm_qla2xxx_put_sess(struct qla_tgt_sess *sess)
 825 {
 826         if (!sess)
 827                 return;
 828
 829         assert_spin_locked(&sess->vha->hw->hardware_lock);
 830         kref_put(&sess->se_sess->sess_kref, tcm_qla2xxx_release_session);
 831 }
 832
 833 static void tcm_qla2xxx_shutdown_sess(struct qla_tgt_sess *sess)
 834 {
 835         assert_spin_locked(&sess->vha->hw->hardware_lock);
 836         target_sess_cmd_list_set_waiting(sess->se_sess);
 837 }
 838
 839 static struct se_node_acl *tcm_qla2xxx_make_nodeacl(
 840         struct se_portal_group *se_tpg,
 841         struct config_group *group,
 842         const char *name)
 843 {
 844         struct se_node_acl *se_nacl, *se_nacl_new;
 845         struct tcm_qla2xxx_nacl *nacl;
 846         u64 wwnn;
 847         u32 qla2xxx_nexus_depth;
 848
 849         if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0)
 850                 return ERR_PTR(-EINVAL);
 851
 852         se_nacl_new = tcm_qla2xxx_alloc_fabric_acl(se_tpg);
 853         if (!se_nacl_new)
 854                 return ERR_PTR(-ENOMEM);
 855 /* #warning FIXME: Hardcoded qla2xxx_nexus depth in tcm_qla2xxx_make_nodeacl */
 856         qla2xxx_nexus_depth = 1;
 857
 858         /*
 859          * se_nacl_new may be released by core_tpg_add_initiator_node_acl()
 860          * when converting a NodeACL from demo mode -> explict
 861          */
 862         se_nacl = core_tpg_add_initiator_node_acl(se_tpg, se_nacl_new,
 863                                 name, qla2xxx_nexus_depth);
 864         if (IS_ERR(se_nacl)) {
 865                 tcm_qla2xxx_release_fabric_acl(se_tpg, se_nacl_new);
 866                 return se_nacl;
 867         }
 868         /*
 869          * Locate our struct tcm_qla2xxx_nacl and set the FC Nport WWPN
 870          */
 871         nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
 872         nacl->nport_wwnn = wwnn;
 873         tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn);
 874
 875         return se_nacl;
 876 }
 877
 878 static void tcm_qla2xxx_drop_nodeacl(struct se_node_acl *se_acl)
 879 {
 880         struct se_portal_group *se_tpg = se_acl->se_tpg;
 881         struct tcm_qla2xxx_nacl *nacl = container_of(se_acl,
 882                                 struct tcm_qla2xxx_nacl, se_node_acl);
 883
 884         core_tpg_del_initiator_node_acl(se_tpg, se_acl, 1);
 885         kfree(nacl);
 886 }
 887
 888 /* Start items for tcm_qla2xxx_tpg_attrib_cit */
 889
 890 #define DEF_QLA_TPG_ATTRIB(name)                                        \
 891                                                                         \
 892 static ssize_t tcm_qla2xxx_tpg_attrib_show_##name(                      \
 893         struct se_portal_group *se_tpg,                                 \
 894         char *page)                                                     \
 895 {                                                                       \
 896         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,              \
 897                         struct tcm_qla2xxx_tpg, se_tpg);                \
 898                                                                         \
 899         return sprintf(page, "%u\n", tpg->tpg_attrib.name);     \
 900 }                                                                       \
 901                                                                         \
 902 static ssize_t tcm_qla2xxx_tpg_attrib_store_##name(                     \
 903         struct se_portal_group *se_tpg,                                 \
 904         const char *page,                                               \
 905         size_t count)                                                   \
 906 {                                                                       \
 907         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,              \
 908                         struct tcm_qla2xxx_tpg, se_tpg);                \
 909         unsigned long val;                                              \
 910         int ret;                                                        \
 911                                                                         \
 912         ret = kstrtoul(page, 0, &val);                                  \
 913         if (ret < 0) {                                                  \
 914                 pr_err("kstrtoul() failed with"                         \
 915                                 " ret: %d\n", ret);                     \
 916                 return -EINVAL;                                         \
 917         }                                                               \
 918         ret = tcm_qla2xxx_set_attrib_##name(tpg, val);                  \
 919                                                                         \
 920         return (!ret) ? count : -EINVAL;                                \
 921 }
 922
 923 #define DEF_QLA_TPG_ATTR_BOOL(_name)                                    \
 924                                                                         \
 925 static int tcm_qla2xxx_set_attrib_##_name(                              \
 926         struct tcm_qla2xxx_tpg *tpg,                                    \
 927         unsigned long val)                                              \
 928 {                                                                       \
 929         struct tcm_qla2xxx_tpg_attrib *a = &tpg->tpg_attrib;            \
 930                                                                         \
 931         if ((val != 0) && (val != 1)) {                                 \
 932                 pr_err("Illegal boolean value %lu\n", val);             \
 933                 return -EINVAL;                                         \
 934         }                                                               \
 935                                                                         \
 936         a->_name = val;                                                 \
 937         return 0;                                                       \
 938 }
 939
 940 #define QLA_TPG_ATTR(_name, _mode) \
 941         TF_TPG_ATTRIB_ATTR(tcm_qla2xxx, _name, _mode);
 942
 943 /*
 944  * Define tcm_qla2xxx_tpg_attrib_s_generate_node_acls
 945  */
 946 DEF_QLA_TPG_ATTR_BOOL(generate_node_acls);
 947 DEF_QLA_TPG_ATTRIB(generate_node_acls);
 948 QLA_TPG_ATTR(generate_node_acls, S_IRUGO | S_IWUSR);
 949
 950 /*
 951  Define tcm_qla2xxx_attrib_s_cache_dynamic_acls
 952  */
 953 DEF_QLA_TPG_ATTR_BOOL(cache_dynamic_acls);
 954 DEF_QLA_TPG_ATTRIB(cache_dynamic_acls);
 955 QLA_TPG_ATTR(cache_dynamic_acls, S_IRUGO | S_IWUSR);
 956
 957 /*
 958  * Define tcm_qla2xxx_tpg_attrib_s_demo_mode_write_protect
 959  */
 960 DEF_QLA_TPG_ATTR_BOOL(demo_mode_write_protect);
 961 DEF_QLA_TPG_ATTRIB(demo_mode_write_protect);
 962 QLA_TPG_ATTR(demo_mode_write_protect, S_IRUGO | S_IWUSR);
 963
 964 /*
 965  * Define tcm_qla2xxx_tpg_attrib_s_prod_mode_write_protect
 966  */
 967 DEF_QLA_TPG_ATTR_BOOL(prod_mode_write_protect);
 968 DEF_QLA_TPG_ATTRIB(prod_mode_write_protect);
 969 QLA_TPG_ATTR(prod_mode_write_protect, S_IRUGO | S_IWUSR);
 970
 971 /*
 972  * Define tcm_qla2xxx_tpg_attrib_s_demo_mode_login_only
 973  */
 974 DEF_QLA_TPG_ATTR_BOOL(demo_mode_login_only);
 975 DEF_QLA_TPG_ATTRIB(demo_mode_login_only);
 976 QLA_TPG_ATTR(demo_mode_login_only, S_IRUGO | S_IWUSR);
 977
 978 static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = {
 979         &tcm_qla2xxx_tpg_attrib_generate_node_acls.attr,
 980         &tcm_qla2xxx_tpg_attrib_cache_dynamic_acls.attr,
 981         &tcm_qla2xxx_tpg_attrib_demo_mode_write_protect.attr,
 982         &tcm_qla2xxx_tpg_attrib_prod_mode_write_protect.attr,
 983         &tcm_qla2xxx_tpg_attrib_demo_mode_login_only.attr,
 984         NULL,
 985 };
 986
 987 /* End items for tcm_qla2xxx_tpg_attrib_cit */
 988
 989 static ssize_t tcm_qla2xxx_tpg_show_enable(
 990         struct se_portal_group *se_tpg,
 991         char *page)
 992 {
 993         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 994                         struct tcm_qla2xxx_tpg, se_tpg);
 995
 996         return snprintf(page, PAGE_SIZE, "%d\n",
 997                         atomic_read(&tpg->lport_tpg_enabled));
 998 }
 999
1000 static void tcm_qla2xxx_depend_tpg(struct work_struct *work)
1001 {
1002         struct tcm_qla2xxx_tpg *base_tpg = container_of(work,
1003                                 struct tcm_qla2xxx_tpg, tpg_base_work);
1004         struct se_portal_group *se_tpg = &base_tpg->se_tpg;
1005         struct scsi_qla_host *base_vha = base_tpg->lport->qla_vha;
1006
1007         if (!configfs_depend_item(se_tpg->se_tpg_tfo->tf_subsys,
1008                                   &se_tpg->tpg_group.cg_item)) {
1009                 atomic_set(&base_tpg->lport_tpg_enabled, 1);
1010                 qlt_enable_vha(base_vha);
1011         }
1012         complete(&base_tpg->tpg_base_comp);
1013 }
1014
1015 static void tcm_qla2xxx_undepend_tpg(struct work_struct *work)
1016 {
1017         struct tcm_qla2xxx_tpg *base_tpg = container_of(work,
1018                                 struct tcm_qla2xxx_tpg, tpg_base_work);
1019         struct se_portal_group *se_tpg = &base_tpg->se_tpg;
1020         struct scsi_qla_host *base_vha = base_tpg->lport->qla_vha;
1021
1022         if (!qlt_stop_phase1(base_vha->vha_tgt.qla_tgt)) {
1023                 atomic_set(&base_tpg->lport_tpg_enabled, 0);
1024                 configfs_undepend_item(se_tpg->se_tpg_tfo->tf_subsys,
1025                                        &se_tpg->tpg_group.cg_item);
1026         }
1027         complete(&base_tpg->tpg_base_comp);
1028 }
1029
1030 static ssize_t tcm_qla2xxx_tpg_store_enable(
1031         struct se_portal_group *se_tpg,
1032         const char *page,
1033         size_t count)
1034 {
1035         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1036                         struct tcm_qla2xxx_tpg, se_tpg);
1037         unsigned long op;
1038         int rc;
1039
1040         rc = kstrtoul(page, 0, &op);
1041         if (rc < 0) {
1042                 pr_err("kstrtoul() returned %d\n", rc);
1043                 return -EINVAL;
1044         }
1045         if ((op != 1) && (op != 0)) {
1046                 pr_err("Illegal value for tpg_enable: %lu\n", op);
1047                 return -EINVAL;
1048         }
1049         if (op) {
1050                 if (atomic_read(&tpg->lport_tpg_enabled))
1051                         return -EEXIST;
1052
1053                 INIT_WORK(&tpg->tpg_base_work, tcm_qla2xxx_depend_tpg);
1054         } else {
1055                 if (!atomic_read(&tpg->lport_tpg_enabled))
1056                         return count;
1057
1058                 INIT_WORK(&tpg->tpg_base_work, tcm_qla2xxx_undepend_tpg);
1059         }
1060         init_completion(&tpg->tpg_base_comp);
1061         schedule_work(&tpg->tpg_base_work);
1062         wait_for_completion(&tpg->tpg_base_comp);
1063
1064         if (op) {
1065                 if (!atomic_read(&tpg->lport_tpg_enabled))
1066                         return -ENODEV;
1067         } else {
1068                 if (atomic_read(&tpg->lport_tpg_enabled))
1069                         return -EPERM;
1070         }
1071         return count;
1072 }
1073
1074 TF_TPG_BASE_ATTR(tcm_qla2xxx, enable, S_IRUGO | S_IWUSR);
1075
1076 static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = {
1077         &tcm_qla2xxx_tpg_enable.attr,
1078         NULL,
1079 };
1080
1081 static struct se_portal_group *tcm_qla2xxx_make_tpg(
1082         struct se_wwn *wwn,
1083         struct config_group *group,
1084         const char *name)
1085 {
1086         struct tcm_qla2xxx_lport *lport = container_of(wwn,
1087                         struct tcm_qla2xxx_lport, lport_wwn);
1088         struct tcm_qla2xxx_tpg *tpg;
1089         unsigned long tpgt;
1090         int ret;
1091
1092         if (strstr(name, "tpgt_") != name)
1093                 return ERR_PTR(-EINVAL);
1094         if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
1095                 return ERR_PTR(-EINVAL);
1096
1097         if ((tpgt != 1)) {
1098                 pr_err("In non NPIV mode, a single TPG=1 is used for HW port mappings\n");
1099                 return ERR_PTR(-ENOSYS);
1100         }
1101
1102         tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
1103         if (!tpg) {
1104                 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1105                 return ERR_PTR(-ENOMEM);
1106         }
1107         tpg->lport = lport;
1108         tpg->lport_tpgt = tpgt;
1109         /*
1110          * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
1111          * NodeACLs
1112          */
1113         tpg->tpg_attrib.generate_node_acls = 1;
1114         tpg->tpg_attrib.demo_mode_write_protect = 1;
1115         tpg->tpg_attrib.cache_dynamic_acls = 1;
1116         tpg->tpg_attrib.demo_mode_login_only = 1;
1117
1118         ret = core_tpg_register(&tcm_qla2xxx_fabric_configfs->tf_ops, wwn,
1119                                 &tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL);
1120         if (ret < 0) {
1121                 kfree(tpg);
1122                 return NULL;
1123         }
1124
1125         lport->tpg_1 = tpg;
1126
1127         return &tpg->se_tpg;
1128 }
1129
1130 static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg)
1131 {
1132         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1133                         struct tcm_qla2xxx_tpg, se_tpg);
1134         struct tcm_qla2xxx_lport *lport = tpg->lport;
1135         struct scsi_qla_host *vha = lport->qla_vha;
1136         /*
1137          * Call into qla2x_target.c LLD logic to shutdown the active
1138          * FC Nexuses and disable target mode operation for this qla_hw_data
1139          */
1140         if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stop)
1141                 qlt_stop_phase1(vha->vha_tgt.qla_tgt);
1142
1143         core_tpg_deregister(se_tpg);
1144         /*
1145          * Clear local TPG=1 pointer for non NPIV mode.
1146          */
1147         lport->tpg_1 = NULL;
1148         kfree(tpg);
1149 }
1150
1151 static ssize_t tcm_qla2xxx_npiv_tpg_show_enable(
1152         struct se_portal_group *se_tpg,
1153         char *page)
1154 {
1155         return tcm_qla2xxx_tpg_show_enable(se_tpg, page);
1156 }
1157
1158 static ssize_t tcm_qla2xxx_npiv_tpg_store_enable(
1159         struct se_portal_group *se_tpg,
1160         const char *page,
1161         size_t count)
1162 {
1163         struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
1164         struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
1165                         struct tcm_qla2xxx_lport, lport_wwn);
1166         struct scsi_qla_host *vha = lport->qla_vha;
1167         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1168                         struct tcm_qla2xxx_tpg, se_tpg);
1169         unsigned long op;
1170         int rc;
1171
1172         rc = kstrtoul(page, 0, &op);
1173         if (rc < 0) {
1174                 pr_err("kstrtoul() returned %d\n", rc);
1175                 return -EINVAL;
1176         }
1177         if ((op != 1) && (op != 0)) {
1178                 pr_err("Illegal value for tpg_enable: %lu\n", op);
1179                 return -EINVAL;
1180         }
1181         if (op) {
1182                 if (atomic_read(&tpg->lport_tpg_enabled))
1183                         return -EEXIST;
1184
1185                 atomic_set(&tpg->lport_tpg_enabled, 1);
1186                 qlt_enable_vha(vha);
1187         } else {
1188                 if (!atomic_read(&tpg->lport_tpg_enabled))
1189                         return count;
1190
1191                 atomic_set(&tpg->lport_tpg_enabled, 0);
1192                 qlt_stop_phase1(vha->vha_tgt.qla_tgt);
1193         }
1194
1195         return count;
1196 }
1197
1198 TF_TPG_BASE_ATTR(tcm_qla2xxx_npiv, enable, S_IRUGO | S_IWUSR);
1199
1200 static struct configfs_attribute *tcm_qla2xxx_npiv_tpg_attrs[] = {
1201         &tcm_qla2xxx_npiv_tpg_enable.attr,
1202         NULL,
1203 };
1204
1205 static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg(
1206         struct se_wwn *wwn,
1207         struct config_group *group,
1208         const char *name)
1209 {
1210         struct tcm_qla2xxx_lport *lport = container_of(wwn,
1211                         struct tcm_qla2xxx_lport, lport_wwn);
1212         struct tcm_qla2xxx_tpg *tpg;
1213         unsigned long tpgt;
1214         int ret;
1215
1216         if (strstr(name, "tpgt_") != name)
1217                 return ERR_PTR(-EINVAL);
1218         if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
1219                 return ERR_PTR(-EINVAL);
1220
1221         tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
1222         if (!tpg) {
1223                 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1224                 return ERR_PTR(-ENOMEM);
1225         }
1226         tpg->lport = lport;
1227         tpg->lport_tpgt = tpgt;
1228
1229         /*
1230          * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
1231          * NodeACLs
1232          */
1233         tpg->tpg_attrib.generate_node_acls = 1;
1234         tpg->tpg_attrib.demo_mode_write_protect = 1;
1235         tpg->tpg_attrib.cache_dynamic_acls = 1;
1236         tpg->tpg_attrib.demo_mode_login_only = 1;
1237
1238         ret = core_tpg_register(&tcm_qla2xxx_npiv_fabric_configfs->tf_ops, wwn,
1239                                 &tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL);
1240         if (ret < 0) {
1241                 kfree(tpg);
1242                 return NULL;
1243         }
1244         lport->tpg_1 = tpg;
1245         return &tpg->se_tpg;
1246 }
1247
1248 /*
1249  * Expected to be called with struct qla_hw_data->hardware_lock held
1250  */
1251 static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_s_id(
1252         scsi_qla_host_t *vha,
1253         const uint8_t *s_id)
1254 {
1255         struct tcm_qla2xxx_lport *lport;
1256         struct se_node_acl *se_nacl;
1257         struct tcm_qla2xxx_nacl *nacl;
1258         u32 key;
1259
1260         lport = vha->vha_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         key = (((unsigned long)s_id[0] << 16) |
1268                ((unsigned long)s_id[1] << 8) |
1269                (unsigned long)s_id[2]);
1270         pr_debug("find_sess_by_s_id: 0x%06x\n", key);
1271
1272         se_nacl = btree_lookup32(&lport->lport_fcport_map, key);
1273         if (!se_nacl) {
1274                 pr_debug("Unable to locate s_id: 0x%06x\n", key);
1275                 return NULL;
1276         }
1277         pr_debug("find_sess_by_s_id: located se_nacl: %p, initiatorname: %s\n",
1278             se_nacl, se_nacl->initiatorname);
1279
1280         nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1281         if (!nacl->qla_tgt_sess) {
1282                 pr_err("Unable to locate struct qla_tgt_sess\n");
1283                 return NULL;
1284         }
1285
1286         return nacl->qla_tgt_sess;
1287 }
1288
1289 /*
1290  * Expected to be called with struct qla_hw_data->hardware_lock held
1291  */
1292 static void tcm_qla2xxx_set_sess_by_s_id(
1293         struct tcm_qla2xxx_lport *lport,
1294         struct se_node_acl *new_se_nacl,
1295         struct tcm_qla2xxx_nacl *nacl,
1296         struct se_session *se_sess,
1297         struct qla_tgt_sess *qla_tgt_sess,
1298         uint8_t *s_id)
1299 {
1300         u32 key;
1301         void *slot;
1302         int rc;
1303
1304         key = (((unsigned long)s_id[0] << 16) |
1305                ((unsigned long)s_id[1] << 8) |
1306                (unsigned long)s_id[2]);
1307         pr_debug("set_sess_by_s_id: %06x\n", key);
1308
1309         slot = btree_lookup32(&lport->lport_fcport_map, key);
1310         if (!slot) {
1311                 if (new_se_nacl) {
1312                         pr_debug("Setting up new fc_port entry to new_se_nacl\n");
1313                         nacl->nport_id = key;
1314                         rc = btree_insert32(&lport->lport_fcport_map, key,
1315                                         new_se_nacl, GFP_ATOMIC);
1316                         if (rc)
1317                                 printk(KERN_ERR "Unable to insert s_id into fcport_map: %06x\n",
1318                                     (int)key);
1319                 } else {
1320                         pr_debug("Wiping nonexisting fc_port entry\n");
1321                 }
1322
1323                 qla_tgt_sess->se_sess = se_sess;
1324                 nacl->qla_tgt_sess = qla_tgt_sess;
1325                 return;
1326         }
1327
1328         if (nacl->qla_tgt_sess) {
1329                 if (new_se_nacl == NULL) {
1330                         pr_debug("Clearing existing nacl->qla_tgt_sess and fc_port entry\n");
1331                         btree_remove32(&lport->lport_fcport_map, key);
1332                         nacl->qla_tgt_sess = NULL;
1333                         return;
1334                 }
1335                 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_port entry\n");
1336                 btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1337                 qla_tgt_sess->se_sess = se_sess;
1338                 nacl->qla_tgt_sess = qla_tgt_sess;
1339                 return;
1340         }
1341
1342         if (new_se_nacl == NULL) {
1343                 pr_debug("Clearing existing fc_port entry\n");
1344                 btree_remove32(&lport->lport_fcport_map, key);
1345                 return;
1346         }
1347
1348         pr_debug("Replacing existing fc_port entry w/o active nacl->qla_tgt_sess\n");
1349         btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1350         qla_tgt_sess->se_sess = se_sess;
1351         nacl->qla_tgt_sess = qla_tgt_sess;
1352
1353         pr_debug("Setup nacl->qla_tgt_sess %p by s_id for se_nacl: %p, initiatorname: %s\n",
1354             nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname);
1355 }
1356
1357 /*
1358  * Expected to be called with struct qla_hw_data->hardware_lock held
1359  */
1360 static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_loop_id(
1361         scsi_qla_host_t *vha,
1362         const uint16_t loop_id)
1363 {
1364         struct tcm_qla2xxx_lport *lport;
1365         struct se_node_acl *se_nacl;
1366         struct tcm_qla2xxx_nacl *nacl;
1367         struct tcm_qla2xxx_fc_loopid *fc_loopid;
1368
1369         lport = vha->vha_tgt.target_lport_ptr;
1370         if (!lport) {
1371                 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1372                 dump_stack();
1373                 return NULL;
1374         }
1375
1376         pr_debug("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1377
1378         fc_loopid = lport->lport_loopid_map + loop_id;
1379         se_nacl = fc_loopid->se_nacl;
1380         if (!se_nacl) {
1381                 pr_debug("Unable to locate se_nacl by loop_id: 0x%04x\n",
1382                     loop_id);
1383                 return NULL;
1384         }
1385
1386         nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1387
1388         if (!nacl->qla_tgt_sess) {
1389                 pr_err("Unable to locate struct qla_tgt_sess\n");
1390                 return NULL;
1391         }
1392
1393         return nacl->qla_tgt_sess;
1394 }
1395
1396 /*
1397  * Expected to be called with struct qla_hw_data->hardware_lock held
1398  */
1399 static void tcm_qla2xxx_set_sess_by_loop_id(
1400         struct tcm_qla2xxx_lport *lport,
1401         struct se_node_acl *new_se_nacl,
1402         struct tcm_qla2xxx_nacl *nacl,
1403         struct se_session *se_sess,
1404         struct qla_tgt_sess *qla_tgt_sess,
1405         uint16_t loop_id)
1406 {
1407         struct se_node_acl *saved_nacl;
1408         struct tcm_qla2xxx_fc_loopid *fc_loopid;
1409
1410         pr_debug("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1411
1412         fc_loopid = &((struct tcm_qla2xxx_fc_loopid *)
1413                         lport->lport_loopid_map)[loop_id];
1414
1415         saved_nacl = fc_loopid->se_nacl;
1416         if (!saved_nacl) {
1417                 pr_debug("Setting up new fc_loopid->se_nacl to new_se_nacl\n");
1418                 fc_loopid->se_nacl = new_se_nacl;
1419                 if (qla_tgt_sess->se_sess != se_sess)
1420                         qla_tgt_sess->se_sess = se_sess;
1421                 if (nacl->qla_tgt_sess != qla_tgt_sess)
1422                         nacl->qla_tgt_sess = qla_tgt_sess;
1423                 return;
1424         }
1425
1426         if (nacl->qla_tgt_sess) {
1427                 if (new_se_nacl == NULL) {
1428                         pr_debug("Clearing nacl->qla_tgt_sess and fc_loopid->se_nacl\n");
1429                         fc_loopid->se_nacl = NULL;
1430                         nacl->qla_tgt_sess = NULL;
1431                         return;
1432                 }
1433
1434                 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_loopid->se_nacl\n");
1435                 fc_loopid->se_nacl = new_se_nacl;
1436                 if (qla_tgt_sess->se_sess != se_sess)
1437                         qla_tgt_sess->se_sess = se_sess;
1438                 if (nacl->qla_tgt_sess != qla_tgt_sess)
1439                         nacl->qla_tgt_sess = qla_tgt_sess;
1440                 return;
1441         }
1442
1443         if (new_se_nacl == NULL) {
1444                 pr_debug("Clearing fc_loopid->se_nacl\n");
1445                 fc_loopid->se_nacl = NULL;
1446                 return;
1447         }
1448
1449         pr_debug("Replacing existing fc_loopid->se_nacl w/o active nacl->qla_tgt_sess\n");
1450         fc_loopid->se_nacl = new_se_nacl;
1451         if (qla_tgt_sess->se_sess != se_sess)
1452                 qla_tgt_sess->se_sess = se_sess;
1453         if (nacl->qla_tgt_sess != qla_tgt_sess)
1454                 nacl->qla_tgt_sess = qla_tgt_sess;
1455
1456         pr_debug("Setup nacl->qla_tgt_sess %p by loop_id for se_nacl: %p, initiatorname: %s\n",
1457             nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname);
1458 }
1459
1460 /*
1461  * Should always be called with qla_hw_data->hardware_lock held.
1462  */
1463 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *lport,
1464                 struct tcm_qla2xxx_nacl *nacl, struct qla_tgt_sess *sess)
1465 {
1466         struct se_session *se_sess = sess->se_sess;
1467         unsigned char be_sid[3];
1468
1469         be_sid[0] = sess->s_id.b.domain;
1470         be_sid[1] = sess->s_id.b.area;
1471         be_sid[2] = sess->s_id.b.al_pa;
1472
1473         tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess,
1474                                 sess, be_sid);
1475         tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess,
1476                                 sess, sess->loop_id);
1477 }
1478
1479 static void tcm_qla2xxx_free_session(struct qla_tgt_sess *sess)
1480 {
1481         struct qla_tgt *tgt = sess->tgt;
1482         struct qla_hw_data *ha = tgt->ha;
1483         scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
1484         struct se_session *se_sess;
1485         struct se_node_acl *se_nacl;
1486         struct tcm_qla2xxx_lport *lport;
1487         struct tcm_qla2xxx_nacl *nacl;
1488
1489         BUG_ON(in_interrupt());
1490
1491         se_sess = sess->se_sess;
1492         if (!se_sess) {
1493                 pr_err("struct qla_tgt_sess->se_sess is NULL\n");
1494                 dump_stack();
1495                 return;
1496         }
1497         se_nacl = se_sess->se_node_acl;
1498         nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1499
1500         lport = vha->vha_tgt.target_lport_ptr;
1501         if (!lport) {
1502                 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1503                 dump_stack();
1504                 return;
1505         }
1506         target_wait_for_sess_cmds(se_sess);
1507
1508         transport_deregister_session_configfs(sess->se_sess);
1509         transport_deregister_session(sess->se_sess);
1510 }
1511
1512 /*
1513  * Called via qlt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl()
1514  * to locate struct se_node_acl
1515  */
1516 static int tcm_qla2xxx_check_initiator_node_acl(
1517         scsi_qla_host_t *vha,
1518         unsigned char *fc_wwpn,
1519         void *qla_tgt_sess,
1520         uint8_t *s_id,
1521         uint16_t loop_id)
1522 {
1523         struct qla_hw_data *ha = vha->hw;
1524         struct tcm_qla2xxx_lport *lport;
1525         struct tcm_qla2xxx_tpg *tpg;
1526         struct tcm_qla2xxx_nacl *nacl;
1527         struct se_portal_group *se_tpg;
1528         struct se_node_acl *se_nacl;
1529         struct se_session *se_sess;
1530         struct qla_tgt_sess *sess = qla_tgt_sess;
1531         unsigned char port_name[36];
1532         unsigned long flags;
1533         int num_tags = (ha->fw_xcb_count) ? ha->fw_xcb_count :
1534                        TCM_QLA2XXX_DEFAULT_TAGS;
1535
1536         lport = vha->vha_tgt.target_lport_ptr;
1537         if (!lport) {
1538                 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1539                 dump_stack();
1540                 return -EINVAL;
1541         }
1542         /*
1543          * Locate the TPG=1 reference..
1544          */
1545         tpg = lport->tpg_1;
1546         if (!tpg) {
1547                 pr_err("Unable to lcoate struct tcm_qla2xxx_lport->tpg_1\n");
1548                 return -EINVAL;
1549         }
1550         se_tpg = &tpg->se_tpg;
1551
1552         se_sess = transport_init_session_tags(num_tags,
1553                                               sizeof(struct qla_tgt_cmd),
1554                                               TARGET_PROT_NORMAL);
1555         if (IS_ERR(se_sess)) {
1556                 pr_err("Unable to initialize struct se_session\n");
1557                 return PTR_ERR(se_sess);
1558         }
1559         /*
1560          * Format the FCP Initiator port_name into colon seperated values to
1561          * match the format by tcm_qla2xxx explict ConfigFS NodeACLs.
1562          */
1563         memset(&port_name, 0, 36);
1564         snprintf(port_name, 36, "%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x",
1565                 fc_wwpn[0], fc_wwpn[1], fc_wwpn[2], fc_wwpn[3], fc_wwpn[4],
1566                 fc_wwpn[5], fc_wwpn[6], fc_wwpn[7]);
1567         /*
1568          * Locate our struct se_node_acl either from an explict NodeACL created
1569          * via ConfigFS, or via running in TPG demo mode.
1570          */
1571         se_sess->se_node_acl = core_tpg_check_initiator_node_acl(se_tpg,
1572                                         port_name);
1573         if (!se_sess->se_node_acl) {
1574                 transport_free_session(se_sess);
1575                 return -EINVAL;
1576         }
1577         se_nacl = se_sess->se_node_acl;
1578         nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1579         /*
1580          * And now setup the new se_nacl and session pointers into our HW lport
1581          * mappings for fabric S_ID and LOOP_ID.
1582          */
1583         spin_lock_irqsave(&ha->hardware_lock, flags);
1584         tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl, se_sess,
1585                         qla_tgt_sess, s_id);
1586         tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl, se_sess,
1587                         qla_tgt_sess, loop_id);
1588         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1589         /*
1590          * Finally register the new FC Nexus with TCM
1591          */
1592         __transport_register_session(se_nacl->se_tpg, se_nacl, se_sess, sess);
1593
1594         return 0;
1595 }
1596
1597 static void tcm_qla2xxx_update_sess(struct qla_tgt_sess *sess, port_id_t s_id,
1598                                     uint16_t loop_id, bool conf_compl_supported)
1599 {
1600         struct qla_tgt *tgt = sess->tgt;
1601         struct qla_hw_data *ha = tgt->ha;
1602         scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
1603         struct tcm_qla2xxx_lport *lport = vha->vha_tgt.target_lport_ptr;
1604         struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
1605         struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
1606                         struct tcm_qla2xxx_nacl, se_node_acl);
1607         u32 key;
1608
1609
1610         if (sess->loop_id != loop_id || sess->s_id.b24 != s_id.b24)
1611                 pr_info("Updating session %p from port %8phC loop_id %d -> %d s_id %x:%x:%x -> %x:%x:%x\n",
1612                     sess, sess->port_name,
1613                     sess->loop_id, loop_id, sess->s_id.b.domain,
1614                     sess->s_id.b.area, sess->s_id.b.al_pa, s_id.b.domain,
1615                     s_id.b.area, s_id.b.al_pa);
1616
1617         if (sess->loop_id != loop_id) {
1618                 /*
1619                  * Because we can shuffle loop IDs around and we
1620                  * update different sessions non-atomically, we might
1621                  * have overwritten this session's old loop ID
1622                  * already, and we might end up overwriting some other
1623                  * session that will be updated later.  So we have to
1624                  * be extra careful and we can't warn about those things...
1625                  */
1626                 if (lport->lport_loopid_map[sess->loop_id].se_nacl == se_nacl)
1627                         lport->lport_loopid_map[sess->loop_id].se_nacl = NULL;
1628
1629                 lport->lport_loopid_map[loop_id].se_nacl = se_nacl;
1630
1631                 sess->loop_id = loop_id;
1632         }
1633
1634         if (sess->s_id.b24 != s_id.b24) {
1635                 key = (((u32) sess->s_id.b.domain << 16) |
1636                        ((u32) sess->s_id.b.area   <<  8) |
1637                        ((u32) sess->s_id.b.al_pa));
1638
1639                 if (btree_lookup32(&lport->lport_fcport_map, key))
1640                         WARN(btree_remove32(&lport->lport_fcport_map, key) != se_nacl,
1641                              "Found wrong se_nacl when updating s_id %x:%x:%x\n",
1642                              sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa);
1643                 else
1644                         WARN(1, "No lport_fcport_map entry for s_id %x:%x:%x\n",
1645                              sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa);
1646
1647                 key = (((u32) s_id.b.domain << 16) |
1648                        ((u32) s_id.b.area   <<  8) |
1649                        ((u32) s_id.b.al_pa));
1650
1651                 if (btree_lookup32(&lport->lport_fcport_map, key)) {
1652                         WARN(1, "Already have lport_fcport_map entry for s_id %x:%x:%x\n",
1653                              s_id.b.domain, s_id.b.area, s_id.b.al_pa);
1654                         btree_update32(&lport->lport_fcport_map, key, se_nacl);
1655                 } else {
1656                         btree_insert32(&lport->lport_fcport_map, key, se_nacl, GFP_ATOMIC);
1657                 }
1658
1659                 sess->s_id = s_id;
1660                 nacl->nport_id = key;
1661         }
1662
1663         sess->conf_compl_supported = conf_compl_supported;
1664 }
1665
1666 /*
1667  * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path.
1668  */
1669 static struct qla_tgt_func_tmpl tcm_qla2xxx_template = {
1670         .handle_cmd             = tcm_qla2xxx_handle_cmd,
1671         .handle_data            = tcm_qla2xxx_handle_data,
1672         .handle_dif_err         = tcm_qla2xxx_handle_dif_err,
1673         .handle_tmr             = tcm_qla2xxx_handle_tmr,
1674         .free_cmd               = tcm_qla2xxx_free_cmd,
1675         .free_mcmd              = tcm_qla2xxx_free_mcmd,
1676         .free_session           = tcm_qla2xxx_free_session,
1677         .update_sess            = tcm_qla2xxx_update_sess,
1678         .check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl,
1679         .find_sess_by_s_id      = tcm_qla2xxx_find_sess_by_s_id,
1680         .find_sess_by_loop_id   = tcm_qla2xxx_find_sess_by_loop_id,
1681         .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map,
1682         .put_sess               = tcm_qla2xxx_put_sess,
1683         .shutdown_sess          = tcm_qla2xxx_shutdown_sess,
1684 };
1685
1686 static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport)
1687 {
1688         int rc;
1689
1690         rc = btree_init32(&lport->lport_fcport_map);
1691         if (rc) {
1692                 pr_err("Unable to initialize lport->lport_fcport_map btree\n");
1693                 return rc;
1694         }
1695
1696         lport->lport_loopid_map = vmalloc(sizeof(struct tcm_qla2xxx_fc_loopid) *
1697                                 65536);
1698         if (!lport->lport_loopid_map) {
1699                 pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n",
1700                     sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1701                 btree_destroy32(&lport->lport_fcport_map);
1702                 return -ENOMEM;
1703         }
1704         memset(lport->lport_loopid_map, 0, sizeof(struct tcm_qla2xxx_fc_loopid)
1705                * 65536);
1706         pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n",
1707                sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1708         return 0;
1709 }
1710
1711 static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha,
1712                                          void *target_lport_ptr,
1713                                          u64 npiv_wwpn, u64 npiv_wwnn)
1714 {
1715         struct qla_hw_data *ha = vha->hw;
1716         struct tcm_qla2xxx_lport *lport =
1717                         (struct tcm_qla2xxx_lport *)target_lport_ptr;
1718         /*
1719          * Setup tgt_ops, local pointer to vha and target_lport_ptr
1720          */
1721         ha->tgt.tgt_ops = &tcm_qla2xxx_template;
1722         vha->vha_tgt.target_lport_ptr = target_lport_ptr;
1723         lport->qla_vha = vha;
1724
1725         return 0;
1726 }
1727
1728 static struct se_wwn *tcm_qla2xxx_make_lport(
1729         struct target_fabric_configfs *tf,
1730         struct config_group *group,
1731         const char *name)
1732 {
1733         struct tcm_qla2xxx_lport *lport;
1734         u64 wwpn;
1735         int ret = -ENODEV;
1736
1737         if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0)
1738                 return ERR_PTR(-EINVAL);
1739
1740         lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1741         if (!lport) {
1742                 pr_err("Unable to allocate struct tcm_qla2xxx_lport\n");
1743                 return ERR_PTR(-ENOMEM);
1744         }
1745         lport->lport_wwpn = wwpn;
1746         tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN,
1747                                 wwpn);
1748         sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) wwpn);
1749
1750         ret = tcm_qla2xxx_init_lport(lport);
1751         if (ret != 0)
1752                 goto out;
1753
1754         ret = qlt_lport_register(lport, wwpn, 0, 0,
1755                                  tcm_qla2xxx_lport_register_cb);
1756         if (ret != 0)
1757                 goto out_lport;
1758
1759         return &lport->lport_wwn;
1760 out_lport:
1761         vfree(lport->lport_loopid_map);
1762         btree_destroy32(&lport->lport_fcport_map);
1763 out:
1764         kfree(lport);
1765         return ERR_PTR(ret);
1766 }
1767
1768 static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn)
1769 {
1770         struct tcm_qla2xxx_lport *lport = container_of(wwn,
1771                         struct tcm_qla2xxx_lport, lport_wwn);
1772         struct scsi_qla_host *vha = lport->qla_vha;
1773         struct se_node_acl *node;
1774         u32 key = 0;
1775
1776         /*
1777          * Call into qla2x_target.c LLD logic to complete the
1778          * shutdown of struct qla_tgt after the call to
1779          * qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above..
1780          */
1781         if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stopped)
1782                 qlt_stop_phase2(vha->vha_tgt.qla_tgt);
1783
1784         qlt_lport_deregister(vha);
1785
1786         vfree(lport->lport_loopid_map);
1787         btree_for_each_safe32(&lport->lport_fcport_map, key, node)
1788                 btree_remove32(&lport->lport_fcport_map, key);
1789         btree_destroy32(&lport->lport_fcport_map);
1790         kfree(lport);
1791 }
1792
1793 static int tcm_qla2xxx_lport_register_npiv_cb(struct scsi_qla_host *base_vha,
1794                                               void *target_lport_ptr,
1795                                               u64 npiv_wwpn, u64 npiv_wwnn)
1796 {
1797         struct fc_vport *vport;
1798         struct Scsi_Host *sh = base_vha->host;
1799         struct scsi_qla_host *npiv_vha;
1800         struct tcm_qla2xxx_lport *lport =
1801                         (struct tcm_qla2xxx_lport *)target_lport_ptr;
1802         struct tcm_qla2xxx_lport *base_lport =
1803                         (struct tcm_qla2xxx_lport *)base_vha->vha_tgt.target_lport_ptr;
1804         struct tcm_qla2xxx_tpg *base_tpg;
1805         struct fc_vport_identifiers vport_id;
1806
1807         if (!qla_tgt_mode_enabled(base_vha)) {
1808                 pr_err("qla2xxx base_vha not enabled for target mode\n");
1809                 return -EPERM;
1810         }
1811
1812         if (!base_lport || !base_lport->tpg_1 ||
1813             !atomic_read(&base_lport->tpg_1->lport_tpg_enabled)) {
1814                 pr_err("qla2xxx base_lport or tpg_1 not available\n");
1815                 return -EPERM;
1816         }
1817         base_tpg = base_lport->tpg_1;
1818
1819         memset(&vport_id, 0, sizeof(vport_id));
1820         vport_id.port_name = npiv_wwpn;
1821         vport_id.node_name = npiv_wwnn;
1822         vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR;
1823         vport_id.vport_type = FC_PORTTYPE_NPIV;
1824         vport_id.disable = false;
1825
1826         vport = fc_vport_create(sh, 0, &vport_id);
1827         if (!vport) {
1828                 pr_err("fc_vport_create failed for qla2xxx_npiv\n");
1829                 return -ENODEV;
1830         }
1831         /*
1832          * Setup local pointer to NPIV vhba + target_lport_ptr
1833          */
1834         npiv_vha = (struct scsi_qla_host *)vport->dd_data;
1835         npiv_vha->vha_tgt.target_lport_ptr = target_lport_ptr;
1836         lport->qla_vha = npiv_vha;
1837         scsi_host_get(npiv_vha->host);
1838         return 0;
1839 }
1840
1841
1842 static struct se_wwn *tcm_qla2xxx_npiv_make_lport(
1843         struct target_fabric_configfs *tf,
1844         struct config_group *group,
1845         const char *name)
1846 {
1847         struct tcm_qla2xxx_lport *lport;
1848         u64 phys_wwpn, npiv_wwpn, npiv_wwnn;
1849         char *p, tmp[128];
1850         int ret;
1851
1852         snprintf(tmp, 128, "%s", name);
1853
1854         p = strchr(tmp, '@');
1855         if (!p) {
1856                 pr_err("Unable to locate NPIV '@' seperator\n");
1857                 return ERR_PTR(-EINVAL);
1858         }
1859         *p++ = '\0';
1860
1861         if (tcm_qla2xxx_parse_wwn(tmp, &phys_wwpn, 1) < 0)
1862                 return ERR_PTR(-EINVAL);
1863
1864         if (tcm_qla2xxx_npiv_parse_wwn(p, strlen(p)+1,
1865                                        &npiv_wwpn, &npiv_wwnn) < 0)
1866                 return ERR_PTR(-EINVAL);
1867
1868         lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1869         if (!lport) {
1870                 pr_err("Unable to allocate struct tcm_qla2xxx_lport for NPIV\n");
1871                 return ERR_PTR(-ENOMEM);
1872         }
1873         lport->lport_npiv_wwpn = npiv_wwpn;
1874         lport->lport_npiv_wwnn = npiv_wwnn;
1875         sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) npiv_wwpn);
1876
1877         ret = tcm_qla2xxx_init_lport(lport);
1878         if (ret != 0)
1879                 goto out;
1880
1881         ret = qlt_lport_register(lport, phys_wwpn, npiv_wwpn, npiv_wwnn,
1882                                  tcm_qla2xxx_lport_register_npiv_cb);
1883         if (ret != 0)
1884                 goto out_lport;
1885
1886         return &lport->lport_wwn;
1887 out_lport:
1888         vfree(lport->lport_loopid_map);
1889         btree_destroy32(&lport->lport_fcport_map);
1890 out:
1891         kfree(lport);
1892         return ERR_PTR(ret);
1893 }
1894
1895 static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn)
1896 {
1897         struct tcm_qla2xxx_lport *lport = container_of(wwn,
1898                         struct tcm_qla2xxx_lport, lport_wwn);
1899         struct scsi_qla_host *npiv_vha = lport->qla_vha;
1900         struct qla_hw_data *ha = npiv_vha->hw;
1901         scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
1902
1903         scsi_host_put(npiv_vha->host);
1904         /*
1905          * Notify libfc that we want to release the vha->fc_vport
1906          */
1907         fc_vport_terminate(npiv_vha->fc_vport);
1908         scsi_host_put(base_vha->host);
1909         kfree(lport);
1910 }
1911
1912
1913 static ssize_t tcm_qla2xxx_wwn_show_attr_version(
1914         struct target_fabric_configfs *tf,
1915         char *page)
1916 {
1917         return sprintf(page,
1918             "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s on "
1919             UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname,
1920             utsname()->machine);
1921 }
1922
1923 TF_WWN_ATTR_RO(tcm_qla2xxx, version);
1924
1925 static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = {
1926         &tcm_qla2xxx_wwn_version.attr,
1927         NULL,
1928 };
1929
1930 static struct target_core_fabric_ops tcm_qla2xxx_ops = {
1931         .get_fabric_name                = tcm_qla2xxx_get_fabric_name,
1932         .get_fabric_proto_ident         = tcm_qla2xxx_get_fabric_proto_ident,
1933         .tpg_get_wwn                    = tcm_qla2xxx_get_fabric_wwn,
1934         .tpg_get_tag                    = tcm_qla2xxx_get_tag,
1935         .tpg_get_default_depth          = tcm_qla2xxx_get_default_depth,
1936         .tpg_get_pr_transport_id        = tcm_qla2xxx_get_pr_transport_id,
1937         .tpg_get_pr_transport_id_len    = tcm_qla2xxx_get_pr_transport_id_len,
1938         .tpg_parse_pr_out_transport_id  = tcm_qla2xxx_parse_pr_out_transport_id,
1939         .tpg_check_demo_mode            = tcm_qla2xxx_check_demo_mode,
1940         .tpg_check_demo_mode_cache      = tcm_qla2xxx_check_demo_mode_cache,
1941         .tpg_check_demo_mode_write_protect =
1942                                         tcm_qla2xxx_check_demo_write_protect,
1943         .tpg_check_prod_mode_write_protect =
1944                                         tcm_qla2xxx_check_prod_write_protect,
1945         .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,
1946         .tpg_alloc_fabric_acl           = tcm_qla2xxx_alloc_fabric_acl,
1947         .tpg_release_fabric_acl         = tcm_qla2xxx_release_fabric_acl,
1948         .tpg_get_inst_index             = tcm_qla2xxx_tpg_get_inst_index,
1949         .check_stop_free                = tcm_qla2xxx_check_stop_free,
1950         .release_cmd                    = tcm_qla2xxx_release_cmd,
1951         .put_session                    = tcm_qla2xxx_put_session,
1952         .shutdown_session               = tcm_qla2xxx_shutdown_session,
1953         .close_session                  = tcm_qla2xxx_close_session,
1954         .sess_get_index                 = tcm_qla2xxx_sess_get_index,
1955         .sess_get_initiator_sid         = NULL,
1956         .write_pending                  = tcm_qla2xxx_write_pending,
1957         .write_pending_status           = tcm_qla2xxx_write_pending_status,
1958         .set_default_node_attributes    = tcm_qla2xxx_set_default_node_attrs,
1959         .get_task_tag                   = tcm_qla2xxx_get_task_tag,
1960         .get_cmd_state                  = tcm_qla2xxx_get_cmd_state,
1961         .queue_data_in                  = tcm_qla2xxx_queue_data_in,
1962         .queue_status                   = tcm_qla2xxx_queue_status,
1963         .queue_tm_rsp                   = tcm_qla2xxx_queue_tm_rsp,
1964         .aborted_task                   = tcm_qla2xxx_aborted_task,
1965         /*
1966          * Setup function pointers for generic logic in
1967          * target_core_fabric_configfs.c
1968          */
1969         .fabric_make_wwn                = tcm_qla2xxx_make_lport,
1970         .fabric_drop_wwn                = tcm_qla2xxx_drop_lport,
1971         .fabric_make_tpg                = tcm_qla2xxx_make_tpg,
1972         .fabric_drop_tpg                = tcm_qla2xxx_drop_tpg,
1973         .fabric_post_link               = NULL,
1974         .fabric_pre_unlink              = NULL,
1975         .fabric_make_np                 = NULL,
1976         .fabric_drop_np                 = NULL,
1977         .fabric_make_nodeacl            = tcm_qla2xxx_make_nodeacl,
1978         .fabric_drop_nodeacl            = tcm_qla2xxx_drop_nodeacl,
1979 };
1980
1981 static struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = {
1982         .get_fabric_name                = tcm_qla2xxx_npiv_get_fabric_name,
1983         .get_fabric_proto_ident         = tcm_qla2xxx_get_fabric_proto_ident,
1984         .tpg_get_wwn                    = tcm_qla2xxx_get_fabric_wwn,
1985         .tpg_get_tag                    = tcm_qla2xxx_get_tag,
1986         .tpg_get_default_depth          = tcm_qla2xxx_get_default_depth,
1987         .tpg_get_pr_transport_id        = tcm_qla2xxx_get_pr_transport_id,
1988         .tpg_get_pr_transport_id_len    = tcm_qla2xxx_get_pr_transport_id_len,
1989         .tpg_parse_pr_out_transport_id  = tcm_qla2xxx_parse_pr_out_transport_id,
1990         .tpg_check_demo_mode            = tcm_qla2xxx_check_demo_mode,
1991         .tpg_check_demo_mode_cache      = tcm_qla2xxx_check_demo_mode_cache,
1992         .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_demo_mode,
1993         .tpg_check_prod_mode_write_protect =
1994             tcm_qla2xxx_check_prod_write_protect,
1995         .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,
1996         .tpg_alloc_fabric_acl           = tcm_qla2xxx_alloc_fabric_acl,
1997         .tpg_release_fabric_acl         = tcm_qla2xxx_release_fabric_acl,
1998         .tpg_get_inst_index             = tcm_qla2xxx_tpg_get_inst_index,
1999         .check_stop_free                = tcm_qla2xxx_check_stop_free,
2000         .release_cmd                    = tcm_qla2xxx_release_cmd,
2001         .put_session                    = tcm_qla2xxx_put_session,
2002         .shutdown_session               = tcm_qla2xxx_shutdown_session,
2003         .close_session                  = tcm_qla2xxx_close_session,
2004         .sess_get_index                 = tcm_qla2xxx_sess_get_index,
2005         .sess_get_initiator_sid         = NULL,
2006         .write_pending                  = tcm_qla2xxx_write_pending,
2007         .write_pending_status           = tcm_qla2xxx_write_pending_status,
2008         .set_default_node_attributes    = tcm_qla2xxx_set_default_node_attrs,
2009         .get_task_tag                   = tcm_qla2xxx_get_task_tag,
2010         .get_cmd_state                  = tcm_qla2xxx_get_cmd_state,
2011         .queue_data_in                  = tcm_qla2xxx_queue_data_in,
2012         .queue_status                   = tcm_qla2xxx_queue_status,
2013         .queue_tm_rsp                   = tcm_qla2xxx_queue_tm_rsp,
2014         .aborted_task                   = tcm_qla2xxx_aborted_task,
2015         /*
2016          * Setup function pointers for generic logic in
2017          * target_core_fabric_configfs.c
2018          */
2019         .fabric_make_wwn                = tcm_qla2xxx_npiv_make_lport,
2020         .fabric_drop_wwn                = tcm_qla2xxx_npiv_drop_lport,
2021         .fabric_make_tpg                = tcm_qla2xxx_npiv_make_tpg,
2022         .fabric_drop_tpg                = tcm_qla2xxx_drop_tpg,
2023         .fabric_post_link               = NULL,
2024         .fabric_pre_unlink              = NULL,
2025         .fabric_make_np                 = NULL,
2026         .fabric_drop_np                 = NULL,
2027         .fabric_make_nodeacl            = tcm_qla2xxx_make_nodeacl,
2028         .fabric_drop_nodeacl            = tcm_qla2xxx_drop_nodeacl,
2029 };
2030
2031 static int tcm_qla2xxx_register_configfs(void)
2032 {
2033         struct target_fabric_configfs *fabric, *npiv_fabric;
2034         int ret;
2035
2036         pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on "
2037             UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname,
2038             utsname()->machine);
2039         /*
2040          * Register the top level struct config_item_type with TCM core
2041          */
2042         fabric = target_fabric_configfs_init(THIS_MODULE, "qla2xxx");
2043         if (IS_ERR(fabric)) {
2044                 pr_err("target_fabric_configfs_init() failed\n");
2045                 return PTR_ERR(fabric);
2046         }
2047         /*
2048          * Setup fabric->tf_ops from our local tcm_qla2xxx_ops
2049          */
2050         fabric->tf_ops = tcm_qla2xxx_ops;
2051         /*
2052          * Setup default attribute lists for various fabric->tf_cit_tmpl
2053          */
2054         fabric->tf_cit_tmpl.tfc_wwn_cit.ct_attrs = tcm_qla2xxx_wwn_attrs;
2055         fabric->tf_cit_tmpl.tfc_tpg_base_cit.ct_attrs = tcm_qla2xxx_tpg_attrs;
2056         fabric->tf_cit_tmpl.tfc_tpg_attrib_cit.ct_attrs =
2057                                                 tcm_qla2xxx_tpg_attrib_attrs;
2058         fabric->tf_cit_tmpl.tfc_tpg_param_cit.ct_attrs = NULL;
2059         fabric->tf_cit_tmpl.tfc_tpg_np_base_cit.ct_attrs = NULL;
2060         fabric->tf_cit_tmpl.tfc_tpg_nacl_base_cit.ct_attrs = NULL;
2061         fabric->tf_cit_tmpl.tfc_tpg_nacl_attrib_cit.ct_attrs = NULL;
2062         fabric->tf_cit_tmpl.tfc_tpg_nacl_auth_cit.ct_attrs = NULL;
2063         fabric->tf_cit_tmpl.tfc_tpg_nacl_param_cit.ct_attrs = NULL;
2064         /*
2065          * Register the fabric for use within TCM
2066          */
2067         ret = target_fabric_configfs_register(fabric);
2068         if (ret < 0) {
2069                 pr_err("target_fabric_configfs_register() failed for TCM_QLA2XXX\n");
2070                 return ret;
2071         }
2072         /*
2073          * Setup our local pointer to *fabric
2074          */
2075         tcm_qla2xxx_fabric_configfs = fabric;
2076         pr_debug("TCM_QLA2XXX[0] - Set fabric -> tcm_qla2xxx_fabric_configfs\n");
2077
2078         /*
2079          * Register the top level struct config_item_type for NPIV with TCM core
2080          */
2081         npiv_fabric = target_fabric_configfs_init(THIS_MODULE, "qla2xxx_npiv");
2082         if (IS_ERR(npiv_fabric)) {
2083                 pr_err("target_fabric_configfs_init() failed\n");
2084                 ret = PTR_ERR(npiv_fabric);
2085                 goto out_fabric;
2086         }
2087         /*
2088          * Setup fabric->tf_ops from our local tcm_qla2xxx_npiv_ops
2089          */
2090         npiv_fabric->tf_ops = tcm_qla2xxx_npiv_ops;
2091         /*
2092          * Setup default attribute lists for various npiv_fabric->tf_cit_tmpl
2093          */
2094         npiv_fabric->tf_cit_tmpl.tfc_wwn_cit.ct_attrs = tcm_qla2xxx_wwn_attrs;
2095         npiv_fabric->tf_cit_tmpl.tfc_tpg_base_cit.ct_attrs =
2096             tcm_qla2xxx_npiv_tpg_attrs;
2097         npiv_fabric->tf_cit_tmpl.tfc_tpg_attrib_cit.ct_attrs = NULL;
2098         npiv_fabric->tf_cit_tmpl.tfc_tpg_param_cit.ct_attrs = NULL;
2099         npiv_fabric->tf_cit_tmpl.tfc_tpg_np_base_cit.ct_attrs = NULL;
2100         npiv_fabric->tf_cit_tmpl.tfc_tpg_nacl_base_cit.ct_attrs = NULL;
2101         npiv_fabric->tf_cit_tmpl.tfc_tpg_nacl_attrib_cit.ct_attrs = NULL;
2102         npiv_fabric->tf_cit_tmpl.tfc_tpg_nacl_auth_cit.ct_attrs = NULL;
2103         npiv_fabric->tf_cit_tmpl.tfc_tpg_nacl_param_cit.ct_attrs = NULL;
2104         /*
2105          * Register the npiv_fabric for use within TCM
2106          */
2107         ret = target_fabric_configfs_register(npiv_fabric);
2108         if (ret < 0) {
2109                 pr_err("target_fabric_configfs_register() failed for TCM_QLA2XXX\n");
2110                 goto out_fabric;
2111         }
2112         /*
2113          * Setup our local pointer to *npiv_fabric
2114          */
2115         tcm_qla2xxx_npiv_fabric_configfs = npiv_fabric;
2116         pr_debug("TCM_QLA2XXX[0] - Set fabric -> tcm_qla2xxx_npiv_fabric_configfs\n");
2117
2118         tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free",
2119                                                 WQ_MEM_RECLAIM, 0);
2120         if (!tcm_qla2xxx_free_wq) {
2121                 ret = -ENOMEM;
2122                 goto out_fabric_npiv;
2123         }
2124
2125         tcm_qla2xxx_cmd_wq = alloc_workqueue("tcm_qla2xxx_cmd", 0, 0);
2126         if (!tcm_qla2xxx_cmd_wq) {
2127                 ret = -ENOMEM;
2128                 goto out_free_wq;
2129         }
2130
2131         return 0;
2132
2133 out_free_wq:
2134         destroy_workqueue(tcm_qla2xxx_free_wq);
2135 out_fabric_npiv:
2136         target_fabric_configfs_deregister(tcm_qla2xxx_npiv_fabric_configfs);
2137 out_fabric:
2138         target_fabric_configfs_deregister(tcm_qla2xxx_fabric_configfs);
2139         return ret;
2140 }
2141
2142 static void tcm_qla2xxx_deregister_configfs(void)
2143 {
2144         destroy_workqueue(tcm_qla2xxx_cmd_wq);
2145         destroy_workqueue(tcm_qla2xxx_free_wq);
2146
2147         target_fabric_configfs_deregister(tcm_qla2xxx_fabric_configfs);
2148         tcm_qla2xxx_fabric_configfs = NULL;
2149         pr_debug("TCM_QLA2XXX[0] - Cleared tcm_qla2xxx_fabric_configfs\n");
2150
2151         target_fabric_configfs_deregister(tcm_qla2xxx_npiv_fabric_configfs);
2152         tcm_qla2xxx_npiv_fabric_configfs = NULL;
2153         pr_debug("TCM_QLA2XXX[0] - Cleared tcm_qla2xxx_npiv_fabric_configfs\n");
2154 }
2155
2156 static int __init tcm_qla2xxx_init(void)
2157 {
2158         int ret;
2159
2160         ret = tcm_qla2xxx_register_configfs();
2161         if (ret < 0)
2162                 return ret;
2163
2164         return 0;
2165 }
2166
2167 static void __exit tcm_qla2xxx_exit(void)
2168 {
2169         tcm_qla2xxx_deregister_configfs();
2170 }
2171
2172 MODULE_DESCRIPTION("TCM QLA2XXX series NPIV enabled fabric driver");
2173 MODULE_LICENSE("GPL");
2174 module_init(tcm_qla2xxx_init);
2175 module_exit(tcm_qla2xxx_exit);