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 <asm/unaligned.h>
  42 #include <scsi/scsi.h>
  43 #include <scsi/scsi_host.h>
  44 #include <scsi/scsi_device.h>
  45 #include <scsi/scsi_cmnd.h>
  46 #include <target/target_core_base.h>
  47 #include <target/target_core_fabric.h>
  48 #include <target/target_core_fabric_configfs.h>
  49 #include <target/target_core_configfs.h>
  50 #include <target/configfs_macros.h>
  51
  52 #include "qla_def.h"
  53 #include "qla_target.h"
  54 #include "tcm_qla2xxx.h"
  55
  56 struct workqueue_struct *tcm_qla2xxx_free_wq;
  57 struct workqueue_struct *tcm_qla2xxx_cmd_wq;
  58
  59 static int tcm_qla2xxx_check_true(struct se_portal_group *se_tpg)
  60 {
  61         return 1;
  62 }
  63
  64 static int tcm_qla2xxx_check_false(struct se_portal_group *se_tpg)
  65 {
  66         return 0;
  67 }
  68
  69 /*
  70  * Parse WWN.
  71  * If strict, we require lower-case hex and colon separators to be sure
  72  * the name is the same as what would be generated by ft_format_wwn()
  73  * so the name and wwn are mapped one-to-one.
  74  */
  75 static ssize_t tcm_qla2xxx_parse_wwn(const char *name, u64 *wwn, int strict)
  76 {
  77         const char *cp;
  78         char c;
  79         u32 nibble;
  80         u32 byte = 0;
  81         u32 pos = 0;
  82         u32 err;
  83
  84         *wwn = 0;
  85         for (cp = name; cp < &name[TCM_QLA2XXX_NAMELEN - 1]; cp++) {
  86                 c = *cp;
  87                 if (c == '\n' && cp[1] == '\0')
  88                         continue;
  89                 if (strict && pos++ == 2 && byte++ < 7) {
  90                         pos = 0;
  91                         if (c == ':')
  92                                 continue;
  93                         err = 1;
  94                         goto fail;
  95                 }
  96                 if (c == '\0') {
  97                         err = 2;
  98                         if (strict && byte != 8)
  99                                 goto fail;
 100                         return cp - name;
 101                 }
 102                 err = 3;
 103                 if (isdigit(c))
 104                         nibble = c - '0';
 105                 else if (isxdigit(c) && (islower(c) || !strict))
 106                         nibble = tolower(c) - 'a' + 10;
 107                 else
 108                         goto fail;
 109                 *wwn = (*wwn << 4) | nibble;
 110         }
 111         err = 4;
 112 fail:
 113         pr_debug("err %u len %zu pos %u byte %u\n",
 114                         err, cp - name, pos, byte);
 115         return -1;
 116 }
 117
 118 static ssize_t tcm_qla2xxx_format_wwn(char *buf, size_t len, u64 wwn)
 119 {
 120         u8 b[8];
 121
 122         put_unaligned_be64(wwn, b);
 123         return snprintf(buf, len,
 124                 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x",
 125                 b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7]);
 126 }
 127
 128 static char *tcm_qla2xxx_get_fabric_name(void)
 129 {
 130         return "qla2xxx";
 131 }
 132
 133 /*
 134  * From drivers/scsi/scsi_transport_fc.c:fc_parse_wwn
 135  */
 136 static int tcm_qla2xxx_npiv_extract_wwn(const char *ns, u64 *nm)
 137 {
 138         unsigned int i, j;
 139         u8 wwn[8];
 140
 141         memset(wwn, 0, sizeof(wwn));
 142
 143         /* Validate and store the new name */
 144         for (i = 0, j = 0; i < 16; i++) {
 145                 int value;
 146
 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         target_sess_cmd_list_set_waiting(se_sess);
 468         spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
 469
 470         return 1;
 471 }
 472
 473 static void tcm_qla2xxx_close_session(struct se_session *se_sess)
 474 {
 475         struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
 476         struct scsi_qla_host *vha;
 477         unsigned long flags;
 478
 479         BUG_ON(!sess);
 480         vha = sess->vha;
 481
 482         spin_lock_irqsave(&vha->hw->hardware_lock, flags);
 483         qlt_unreg_sess(sess);
 484         spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
 485 }
 486
 487 static u32 tcm_qla2xxx_sess_get_index(struct se_session *se_sess)
 488 {
 489         return 0;
 490 }
 491
 492 /*
 493  * The LIO target core uses DMA_TO_DEVICE to mean that data is going
 494  * to the target (eg handling a WRITE) and DMA_FROM_DEVICE to mean
 495  * that data is coming from the target (eg handling a READ).  However,
 496  * this is just the opposite of what we have to tell the DMA mapping
 497  * layer -- eg when handling a READ, the HBA will have to DMA the data
 498  * out of memory so it can send it to the initiator, which means we
 499  * need to use DMA_TO_DEVICE when we map the data.
 500  */
 501 static enum dma_data_direction tcm_qla2xxx_mapping_dir(struct se_cmd *se_cmd)
 502 {
 503         if (se_cmd->se_cmd_flags & SCF_BIDI)
 504                 return DMA_BIDIRECTIONAL;
 505
 506         switch (se_cmd->data_direction) {
 507         case DMA_TO_DEVICE:
 508                 return DMA_FROM_DEVICE;
 509         case DMA_FROM_DEVICE:
 510                 return DMA_TO_DEVICE;
 511         case DMA_NONE:
 512         default:
 513                 return DMA_NONE;
 514         }
 515 }
 516
 517 static int tcm_qla2xxx_write_pending(struct se_cmd *se_cmd)
 518 {
 519         struct qla_tgt_cmd *cmd = container_of(se_cmd,
 520                                 struct qla_tgt_cmd, se_cmd);
 521
 522         cmd->bufflen = se_cmd->data_length;
 523         cmd->dma_data_direction = tcm_qla2xxx_mapping_dir(se_cmd);
 524
 525         cmd->sg_cnt = se_cmd->t_data_nents;
 526         cmd->sg = se_cmd->t_data_sg;
 527
 528         /*
 529          * qla_target.c:qlt_rdy_to_xfer() will call pci_map_sg() to setup
 530          * the SGL mappings into PCIe memory for incoming FCP WRITE data.
 531          */
 532         return qlt_rdy_to_xfer(cmd);
 533 }
 534
 535 static int tcm_qla2xxx_write_pending_status(struct se_cmd *se_cmd)
 536 {
 537         unsigned long flags;
 538         /*
 539          * Check for WRITE_PENDING status to determine if we need to wait for
 540          * CTIO aborts to be posted via hardware in tcm_qla2xxx_handle_data().
 541          */
 542         spin_lock_irqsave(&se_cmd->t_state_lock, flags);
 543         if (se_cmd->t_state == TRANSPORT_WRITE_PENDING ||
 544             se_cmd->t_state == TRANSPORT_COMPLETE_QF_WP) {
 545                 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
 546                 wait_for_completion_timeout(&se_cmd->t_transport_stop_comp,
 547                                                 3000);
 548                 return 0;
 549         }
 550         spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
 551
 552         return 0;
 553 }
 554
 555 static void tcm_qla2xxx_set_default_node_attrs(struct se_node_acl *nacl)
 556 {
 557         return;
 558 }
 559
 560 static u32 tcm_qla2xxx_get_task_tag(struct se_cmd *se_cmd)
 561 {
 562         struct qla_tgt_cmd *cmd = container_of(se_cmd,
 563                                 struct qla_tgt_cmd, se_cmd);
 564
 565         return cmd->tag;
 566 }
 567
 568 static int tcm_qla2xxx_get_cmd_state(struct se_cmd *se_cmd)
 569 {
 570         return 0;
 571 }
 572
 573 /*
 574  * Called from process context in qla_target.c:qlt_do_work() code
 575  */
 576 static int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd,
 577         unsigned char *cdb, uint32_t data_length, int fcp_task_attr,
 578         int data_dir, int bidi)
 579 {
 580         struct se_cmd *se_cmd = &cmd->se_cmd;
 581         struct se_session *se_sess;
 582         struct qla_tgt_sess *sess;
 583         int flags = TARGET_SCF_ACK_KREF;
 584
 585         if (bidi)
 586                 flags |= TARGET_SCF_BIDI_OP;
 587
 588         sess = cmd->sess;
 589         if (!sess) {
 590                 pr_err("Unable to locate struct qla_tgt_sess from qla_tgt_cmd\n");
 591                 return -EINVAL;
 592         }
 593
 594         se_sess = sess->se_sess;
 595         if (!se_sess) {
 596                 pr_err("Unable to locate active struct se_session\n");
 597                 return -EINVAL;
 598         }
 599
 600         return target_submit_cmd(se_cmd, se_sess, cdb, &cmd->sense_buffer[0],
 601                                 cmd->unpacked_lun, data_length, fcp_task_attr,
 602                                 data_dir, flags);
 603 }
 604
 605 static void tcm_qla2xxx_handle_data_work(struct work_struct *work)
 606 {
 607         struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
 608
 609         /*
 610          * Ensure that the complete FCP WRITE payload has been received.
 611          * Otherwise return an exception via CHECK_CONDITION status.
 612          */
 613         if (!cmd->write_data_transferred) {
 614                 /*
 615                  * Check if se_cmd has already been aborted via LUN_RESET, and
 616                  * waiting upon completion in tcm_qla2xxx_write_pending_status()
 617                  */
 618                 if (cmd->se_cmd.transport_state & CMD_T_ABORTED) {
 619                         complete(&cmd->se_cmd.t_transport_stop_comp);
 620                         return;
 621                 }
 622
 623                 cmd->se_cmd.scsi_sense_reason = TCM_CHECK_CONDITION_ABORT_CMD;
 624                 transport_generic_request_failure(&cmd->se_cmd);
 625                 return;
 626         }
 627
 628         return target_execute_cmd(&cmd->se_cmd);
 629 }
 630
 631 /*
 632  * Called from qla_target.c:qlt_do_ctio_completion()
 633  */
 634 static void tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd)
 635 {
 636         INIT_WORK(&cmd->work, tcm_qla2xxx_handle_data_work);
 637         queue_work(tcm_qla2xxx_free_wq, &cmd->work);
 638 }
 639
 640 /*
 641  * Called from qla_target.c:qlt_issue_task_mgmt()
 642  */
 643 static int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *mcmd, uint32_t lun,
 644         uint8_t tmr_func, uint32_t tag)
 645 {
 646         struct qla_tgt_sess *sess = mcmd->sess;
 647         struct se_cmd *se_cmd = &mcmd->se_cmd;
 648
 649         return target_submit_tmr(se_cmd, sess->se_sess, NULL, lun, mcmd,
 650                         tmr_func, GFP_ATOMIC, tag, TARGET_SCF_ACK_KREF);
 651 }
 652
 653 static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd)
 654 {
 655         struct qla_tgt_cmd *cmd = container_of(se_cmd,
 656                                 struct qla_tgt_cmd, se_cmd);
 657
 658         cmd->bufflen = se_cmd->data_length;
 659         cmd->dma_data_direction = tcm_qla2xxx_mapping_dir(se_cmd);
 660         cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED);
 661
 662         cmd->sg_cnt = se_cmd->t_data_nents;
 663         cmd->sg = se_cmd->t_data_sg;
 664         cmd->offset = 0;
 665
 666         /*
 667          * Now queue completed DATA_IN the qla2xxx LLD and response ring
 668          */
 669         return qlt_xmit_response(cmd, QLA_TGT_XMIT_DATA|QLA_TGT_XMIT_STATUS,
 670                                 se_cmd->scsi_status);
 671 }
 672
 673 static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd)
 674 {
 675         struct qla_tgt_cmd *cmd = container_of(se_cmd,
 676                                 struct qla_tgt_cmd, se_cmd);
 677         int xmit_type = QLA_TGT_XMIT_STATUS;
 678
 679         cmd->bufflen = se_cmd->data_length;
 680         cmd->sg = NULL;
 681         cmd->sg_cnt = 0;
 682         cmd->offset = 0;
 683         cmd->dma_data_direction = tcm_qla2xxx_mapping_dir(se_cmd);
 684         cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED);
 685
 686         if (se_cmd->data_direction == DMA_FROM_DEVICE) {
 687                 /*
 688                  * For FCP_READ with CHECK_CONDITION status, clear cmd->bufflen
 689                  * for qla_tgt_xmit_response LLD code
 690                  */
 691                 se_cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT;
 692                 se_cmd->residual_count = se_cmd->data_length;
 693
 694                 cmd->bufflen = 0;
 695         }
 696         /*
 697          * Now queue status response to qla2xxx LLD code and response ring
 698          */
 699         return qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status);
 700 }
 701
 702 static int tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd)
 703 {
 704         struct se_tmr_req *se_tmr = se_cmd->se_tmr_req;
 705         struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
 706                                 struct qla_tgt_mgmt_cmd, se_cmd);
 707
 708         pr_debug("queue_tm_rsp: mcmd: %p func: 0x%02x response: 0x%02x\n",
 709                         mcmd, se_tmr->function, se_tmr->response);
 710         /*
 711          * Do translation between TCM TM response codes and
 712          * QLA2xxx FC TM response codes.
 713          */
 714         switch (se_tmr->response) {
 715         case TMR_FUNCTION_COMPLETE:
 716                 mcmd->fc_tm_rsp = FC_TM_SUCCESS;
 717                 break;
 718         case TMR_TASK_DOES_NOT_EXIST:
 719                 mcmd->fc_tm_rsp = FC_TM_BAD_CMD;
 720                 break;
 721         case TMR_FUNCTION_REJECTED:
 722                 mcmd->fc_tm_rsp = FC_TM_REJECT;
 723                 break;
 724         case TMR_LUN_DOES_NOT_EXIST:
 725         default:
 726                 mcmd->fc_tm_rsp = FC_TM_FAILED;
 727                 break;
 728         }
 729         /*
 730          * Queue the TM response to QLA2xxx LLD to build a
 731          * CTIO response packet.
 732          */
 733         qlt_xmit_tm_rsp(mcmd);
 734
 735         return 0;
 736 }
 737
 738 static u16 tcm_qla2xxx_get_fabric_sense_len(void)
 739 {
 740         return 0;
 741 }
 742
 743 static u16 tcm_qla2xxx_set_fabric_sense_len(struct se_cmd *se_cmd,
 744                                         u32 sense_length)
 745 {
 746         return 0;
 747 }
 748
 749 /* Local pointer to allocated TCM configfs fabric module */
 750 struct target_fabric_configfs *tcm_qla2xxx_fabric_configfs;
 751 struct target_fabric_configfs *tcm_qla2xxx_npiv_fabric_configfs;
 752
 753 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *,
 754                         struct tcm_qla2xxx_nacl *, struct qla_tgt_sess *);
 755 /*
 756  * Expected to be called with struct qla_hw_data->hardware_lock held
 757  */
 758 static void tcm_qla2xxx_clear_nacl_from_fcport_map(struct qla_tgt_sess *sess)
 759 {
 760         struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
 761         struct se_portal_group *se_tpg = se_nacl->se_tpg;
 762         struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
 763         struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
 764                                 struct tcm_qla2xxx_lport, lport_wwn);
 765         struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
 766                                 struct tcm_qla2xxx_nacl, se_node_acl);
 767         void *node;
 768
 769         pr_debug("fc_rport domain: port_id 0x%06x\n", nacl->nport_id);
 770
 771         node = btree_remove32(&lport->lport_fcport_map, nacl->nport_id);
 772         WARN_ON(node && (node != se_nacl));
 773
 774         pr_debug("Removed from fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%06x\n",
 775             se_nacl, nacl->nport_wwnn, nacl->nport_id);
 776         /*
 777          * Now clear the se_nacl and session pointers from our HW lport lookup
 778          * table mapping for this initiator's fabric S_ID and LOOP_ID entries.
 779          *
 780          * This is done ahead of callbacks into tcm_qla2xxx_free_session() ->
 781          * target_wait_for_sess_cmds() before the session waits for outstanding
 782          * I/O to complete, to avoid a race between session shutdown execution
 783          * and incoming ATIOs or TMRs picking up a stale se_node_act reference.
 784          */
 785         tcm_qla2xxx_clear_sess_lookup(lport, nacl, sess);
 786 }
 787
 788 static void tcm_qla2xxx_release_session(struct kref *kref)
 789 {
 790         struct se_session *se_sess = container_of(kref,
 791                         struct se_session, sess_kref);
 792
 793         qlt_unreg_sess(se_sess->fabric_sess_ptr);
 794 }
 795
 796 static void tcm_qla2xxx_put_session(struct se_session *se_sess)
 797 {
 798         struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
 799         struct qla_hw_data *ha = sess->vha->hw;
 800         unsigned long flags;
 801
 802         spin_lock_irqsave(&ha->hardware_lock, flags);
 803         kref_put(&se_sess->sess_kref, tcm_qla2xxx_release_session);
 804         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 805 }
 806
 807 static void tcm_qla2xxx_put_sess(struct qla_tgt_sess *sess)
 808 {
 809         tcm_qla2xxx_put_session(sess->se_sess);
 810 }
 811
 812 static void tcm_qla2xxx_shutdown_sess(struct qla_tgt_sess *sess)
 813 {
 814         tcm_qla2xxx_shutdown_session(sess->se_sess);
 815 }
 816
 817 static struct se_node_acl *tcm_qla2xxx_make_nodeacl(
 818         struct se_portal_group *se_tpg,
 819         struct config_group *group,
 820         const char *name)
 821 {
 822         struct se_node_acl *se_nacl, *se_nacl_new;
 823         struct tcm_qla2xxx_nacl *nacl;
 824         u64 wwnn;
 825         u32 qla2xxx_nexus_depth;
 826
 827         if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0)
 828                 return ERR_PTR(-EINVAL);
 829
 830         se_nacl_new = tcm_qla2xxx_alloc_fabric_acl(se_tpg);
 831         if (!se_nacl_new)
 832                 return ERR_PTR(-ENOMEM);
 833 /* #warning FIXME: Hardcoded qla2xxx_nexus depth in tcm_qla2xxx_make_nodeacl */
 834         qla2xxx_nexus_depth = 1;
 835
 836         /*
 837          * se_nacl_new may be released by core_tpg_add_initiator_node_acl()
 838          * when converting a NodeACL from demo mode -> explict
 839          */
 840         se_nacl = core_tpg_add_initiator_node_acl(se_tpg, se_nacl_new,
 841                                 name, qla2xxx_nexus_depth);
 842         if (IS_ERR(se_nacl)) {
 843                 tcm_qla2xxx_release_fabric_acl(se_tpg, se_nacl_new);
 844                 return se_nacl;
 845         }
 846         /*
 847          * Locate our struct tcm_qla2xxx_nacl and set the FC Nport WWPN
 848          */
 849         nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
 850         nacl->nport_wwnn = wwnn;
 851         tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn);
 852
 853         return se_nacl;
 854 }
 855
 856 static void tcm_qla2xxx_drop_nodeacl(struct se_node_acl *se_acl)
 857 {
 858         struct se_portal_group *se_tpg = se_acl->se_tpg;
 859         struct tcm_qla2xxx_nacl *nacl = container_of(se_acl,
 860                                 struct tcm_qla2xxx_nacl, se_node_acl);
 861
 862         core_tpg_del_initiator_node_acl(se_tpg, se_acl, 1);
 863         kfree(nacl);
 864 }
 865
 866 /* Start items for tcm_qla2xxx_tpg_attrib_cit */
 867
 868 #define DEF_QLA_TPG_ATTRIB(name)                                        \
 869                                                                         \
 870 static ssize_t tcm_qla2xxx_tpg_attrib_show_##name(                      \
 871         struct se_portal_group *se_tpg,                                 \
 872         char *page)                                                     \
 873 {                                                                       \
 874         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,              \
 875                         struct tcm_qla2xxx_tpg, se_tpg);                \
 876                                                                         \
 877         return sprintf(page, "%u\n", QLA_TPG_ATTRIB(tpg)->name);        \
 878 }                                                                       \
 879                                                                         \
 880 static ssize_t tcm_qla2xxx_tpg_attrib_store_##name(                     \
 881         struct se_portal_group *se_tpg,                                 \
 882         const char *page,                                               \
 883         size_t count)                                                   \
 884 {                                                                       \
 885         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,              \
 886                         struct tcm_qla2xxx_tpg, se_tpg);                \
 887         unsigned long val;                                              \
 888         int ret;                                                        \
 889                                                                         \
 890         ret = kstrtoul(page, 0, &val);                                  \
 891         if (ret < 0) {                                                  \
 892                 pr_err("kstrtoul() failed with"                         \
 893                                 " ret: %d\n", ret);                     \
 894                 return -EINVAL;                                         \
 895         }                                                               \
 896         ret = tcm_qla2xxx_set_attrib_##name(tpg, val);                  \
 897                                                                         \
 898         return (!ret) ? count : -EINVAL;                                \
 899 }
 900
 901 #define DEF_QLA_TPG_ATTR_BOOL(_name)                                    \
 902                                                                         \
 903 static int tcm_qla2xxx_set_attrib_##_name(                              \
 904         struct tcm_qla2xxx_tpg *tpg,                                    \
 905         unsigned long val)                                              \
 906 {                                                                       \
 907         struct tcm_qla2xxx_tpg_attrib *a = &tpg->tpg_attrib;            \
 908                                                                         \
 909         if ((val != 0) && (val != 1)) {                                 \
 910                 pr_err("Illegal boolean value %lu\n", val);             \
 911                 return -EINVAL;                                         \
 912         }                                                               \
 913                                                                         \
 914         a->_name = val;                                                 \
 915         return 0;                                                       \
 916 }
 917
 918 #define QLA_TPG_ATTR(_name, _mode) \
 919         TF_TPG_ATTRIB_ATTR(tcm_qla2xxx, _name, _mode);
 920
 921 /*
 922  * Define tcm_qla2xxx_tpg_attrib_s_generate_node_acls
 923  */
 924 DEF_QLA_TPG_ATTR_BOOL(generate_node_acls);
 925 DEF_QLA_TPG_ATTRIB(generate_node_acls);
 926 QLA_TPG_ATTR(generate_node_acls, S_IRUGO | S_IWUSR);
 927
 928 /*
 929  Define tcm_qla2xxx_attrib_s_cache_dynamic_acls
 930  */
 931 DEF_QLA_TPG_ATTR_BOOL(cache_dynamic_acls);
 932 DEF_QLA_TPG_ATTRIB(cache_dynamic_acls);
 933 QLA_TPG_ATTR(cache_dynamic_acls, S_IRUGO | S_IWUSR);
 934
 935 /*
 936  * Define tcm_qla2xxx_tpg_attrib_s_demo_mode_write_protect
 937  */
 938 DEF_QLA_TPG_ATTR_BOOL(demo_mode_write_protect);
 939 DEF_QLA_TPG_ATTRIB(demo_mode_write_protect);
 940 QLA_TPG_ATTR(demo_mode_write_protect, S_IRUGO | S_IWUSR);
 941
 942 /*
 943  * Define tcm_qla2xxx_tpg_attrib_s_prod_mode_write_protect
 944  */
 945 DEF_QLA_TPG_ATTR_BOOL(prod_mode_write_protect);
 946 DEF_QLA_TPG_ATTRIB(prod_mode_write_protect);
 947 QLA_TPG_ATTR(prod_mode_write_protect, S_IRUGO | S_IWUSR);
 948
 949 static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = {
 950         &tcm_qla2xxx_tpg_attrib_generate_node_acls.attr,
 951         &tcm_qla2xxx_tpg_attrib_cache_dynamic_acls.attr,
 952         &tcm_qla2xxx_tpg_attrib_demo_mode_write_protect.attr,
 953         &tcm_qla2xxx_tpg_attrib_prod_mode_write_protect.attr,
 954         NULL,
 955 };
 956
 957 /* End items for tcm_qla2xxx_tpg_attrib_cit */
 958
 959 static ssize_t tcm_qla2xxx_tpg_show_enable(
 960         struct se_portal_group *se_tpg,
 961         char *page)
 962 {
 963         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 964                         struct tcm_qla2xxx_tpg, se_tpg);
 965
 966         return snprintf(page, PAGE_SIZE, "%d\n",
 967                         atomic_read(&tpg->lport_tpg_enabled));
 968 }
 969
 970 static ssize_t tcm_qla2xxx_tpg_store_enable(
 971         struct se_portal_group *se_tpg,
 972         const char *page,
 973         size_t count)
 974 {
 975         struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
 976         struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
 977                         struct tcm_qla2xxx_lport, lport_wwn);
 978         struct scsi_qla_host *vha = lport->qla_vha;
 979         struct qla_hw_data *ha = vha->hw;
 980         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 981                         struct tcm_qla2xxx_tpg, se_tpg);
 982         unsigned long op;
 983         int rc;
 984
 985         rc = kstrtoul(page, 0, &op);
 986         if (rc < 0) {
 987                 pr_err("kstrtoul() returned %d\n", rc);
 988                 return -EINVAL;
 989         }
 990         if ((op != 1) && (op != 0)) {
 991                 pr_err("Illegal value for tpg_enable: %lu\n", op);
 992                 return -EINVAL;
 993         }
 994
 995         if (op) {
 996                 atomic_set(&tpg->lport_tpg_enabled, 1);
 997                 qlt_enable_vha(vha);
 998         } else {
 999                 if (!ha->tgt.qla_tgt) {
1000                         pr_err("truct qla_hw_data *ha->tgt.qla_tgt is NULL\n");
1001                         return -ENODEV;
1002                 }
1003                 atomic_set(&tpg->lport_tpg_enabled, 0);
1004                 qlt_stop_phase1(ha->tgt.qla_tgt);
1005         }
1006
1007         return count;
1008 }
1009
1010 TF_TPG_BASE_ATTR(tcm_qla2xxx, enable, S_IRUGO | S_IWUSR);
1011
1012 static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = {
1013         &tcm_qla2xxx_tpg_enable.attr,
1014         NULL,
1015 };
1016
1017 static struct se_portal_group *tcm_qla2xxx_make_tpg(
1018         struct se_wwn *wwn,
1019         struct config_group *group,
1020         const char *name)
1021 {
1022         struct tcm_qla2xxx_lport *lport = container_of(wwn,
1023                         struct tcm_qla2xxx_lport, lport_wwn);
1024         struct tcm_qla2xxx_tpg *tpg;
1025         unsigned long tpgt;
1026         int ret;
1027
1028         if (strstr(name, "tpgt_") != name)
1029                 return ERR_PTR(-EINVAL);
1030         if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
1031                 return ERR_PTR(-EINVAL);
1032
1033         if (!lport->qla_npiv_vp && (tpgt != 1)) {
1034                 pr_err("In non NPIV mode, a single TPG=1 is used for HW port mappings\n");
1035                 return ERR_PTR(-ENOSYS);
1036         }
1037
1038         tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
1039         if (!tpg) {
1040                 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1041                 return ERR_PTR(-ENOMEM);
1042         }
1043         tpg->lport = lport;
1044         tpg->lport_tpgt = tpgt;
1045         /*
1046          * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
1047          * NodeACLs
1048          */
1049         QLA_TPG_ATTRIB(tpg)->generate_node_acls = 1;
1050         QLA_TPG_ATTRIB(tpg)->demo_mode_write_protect = 1;
1051         QLA_TPG_ATTRIB(tpg)->cache_dynamic_acls = 1;
1052
1053         ret = core_tpg_register(&tcm_qla2xxx_fabric_configfs->tf_ops, wwn,
1054                                 &tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL);
1055         if (ret < 0) {
1056                 kfree(tpg);
1057                 return NULL;
1058         }
1059         /*
1060          * Setup local TPG=1 pointer for non NPIV mode.
1061          */
1062         if (lport->qla_npiv_vp == NULL)
1063                 lport->tpg_1 = tpg;
1064
1065         return &tpg->se_tpg;
1066 }
1067
1068 static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg)
1069 {
1070         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1071                         struct tcm_qla2xxx_tpg, se_tpg);
1072         struct tcm_qla2xxx_lport *lport = tpg->lport;
1073         struct scsi_qla_host *vha = lport->qla_vha;
1074         struct qla_hw_data *ha = vha->hw;
1075         /*
1076          * Call into qla2x_target.c LLD logic to shutdown the active
1077          * FC Nexuses and disable target mode operation for this qla_hw_data
1078          */
1079         if (ha->tgt.qla_tgt && !ha->tgt.qla_tgt->tgt_stop)
1080                 qlt_stop_phase1(ha->tgt.qla_tgt);
1081
1082         core_tpg_deregister(se_tpg);
1083         /*
1084          * Clear local TPG=1 pointer for non NPIV mode.
1085          */
1086         if (lport->qla_npiv_vp == NULL)
1087                 lport->tpg_1 = NULL;
1088
1089         kfree(tpg);
1090 }
1091
1092 static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg(
1093         struct se_wwn *wwn,
1094         struct config_group *group,
1095         const char *name)
1096 {
1097         struct tcm_qla2xxx_lport *lport = container_of(wwn,
1098                         struct tcm_qla2xxx_lport, lport_wwn);
1099         struct tcm_qla2xxx_tpg *tpg;
1100         unsigned long tpgt;
1101         int ret;
1102
1103         if (strstr(name, "tpgt_") != name)
1104                 return ERR_PTR(-EINVAL);
1105         if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
1106                 return ERR_PTR(-EINVAL);
1107
1108         tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
1109         if (!tpg) {
1110                 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1111                 return ERR_PTR(-ENOMEM);
1112         }
1113         tpg->lport = lport;
1114         tpg->lport_tpgt = tpgt;
1115
1116         ret = core_tpg_register(&tcm_qla2xxx_npiv_fabric_configfs->tf_ops, wwn,
1117                                 &tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL);
1118         if (ret < 0) {
1119                 kfree(tpg);
1120                 return NULL;
1121         }
1122         return &tpg->se_tpg;
1123 }
1124
1125 /*
1126  * Expected to be called with struct qla_hw_data->hardware_lock held
1127  */
1128 static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_s_id(
1129         scsi_qla_host_t *vha,
1130         const uint8_t *s_id)
1131 {
1132         struct qla_hw_data *ha = vha->hw;
1133         struct tcm_qla2xxx_lport *lport;
1134         struct se_node_acl *se_nacl;
1135         struct tcm_qla2xxx_nacl *nacl;
1136         u32 key;
1137
1138         lport = ha->tgt.target_lport_ptr;
1139         if (!lport) {
1140                 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1141                 dump_stack();
1142                 return NULL;
1143         }
1144
1145         key = (((unsigned long)s_id[0] << 16) |
1146                ((unsigned long)s_id[1] << 8) |
1147                (unsigned long)s_id[2]);
1148         pr_debug("find_sess_by_s_id: 0x%06x\n", key);
1149
1150         se_nacl = btree_lookup32(&lport->lport_fcport_map, key);
1151         if (!se_nacl) {
1152                 pr_debug("Unable to locate s_id: 0x%06x\n", key);
1153                 return NULL;
1154         }
1155         pr_debug("find_sess_by_s_id: located se_nacl: %p, initiatorname: %s\n",
1156             se_nacl, se_nacl->initiatorname);
1157
1158         nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1159         if (!nacl->qla_tgt_sess) {
1160                 pr_err("Unable to locate struct qla_tgt_sess\n");
1161                 return NULL;
1162         }
1163
1164         return nacl->qla_tgt_sess;
1165 }
1166
1167 /*
1168  * Expected to be called with struct qla_hw_data->hardware_lock held
1169  */
1170 static void tcm_qla2xxx_set_sess_by_s_id(
1171         struct tcm_qla2xxx_lport *lport,
1172         struct se_node_acl *new_se_nacl,
1173         struct tcm_qla2xxx_nacl *nacl,
1174         struct se_session *se_sess,
1175         struct qla_tgt_sess *qla_tgt_sess,
1176         uint8_t *s_id)
1177 {
1178         u32 key;
1179         void *slot;
1180         int rc;
1181
1182         key = (((unsigned long)s_id[0] << 16) |
1183                ((unsigned long)s_id[1] << 8) |
1184                (unsigned long)s_id[2]);
1185         pr_debug("set_sess_by_s_id: %06x\n", key);
1186
1187         slot = btree_lookup32(&lport->lport_fcport_map, key);
1188         if (!slot) {
1189                 if (new_se_nacl) {
1190                         pr_debug("Setting up new fc_port entry to new_se_nacl\n");
1191                         nacl->nport_id = key;
1192                         rc = btree_insert32(&lport->lport_fcport_map, key,
1193                                         new_se_nacl, GFP_ATOMIC);
1194                         if (rc)
1195                                 printk(KERN_ERR "Unable to insert s_id into fcport_map: %06x\n",
1196                                     (int)key);
1197                 } else {
1198                         pr_debug("Wiping nonexisting fc_port entry\n");
1199                 }
1200
1201                 qla_tgt_sess->se_sess = se_sess;
1202                 nacl->qla_tgt_sess = qla_tgt_sess;
1203                 return;
1204         }
1205
1206         if (nacl->qla_tgt_sess) {
1207                 if (new_se_nacl == NULL) {
1208                         pr_debug("Clearing existing nacl->qla_tgt_sess and fc_port entry\n");
1209                         btree_remove32(&lport->lport_fcport_map, key);
1210                         nacl->qla_tgt_sess = NULL;
1211                         return;
1212                 }
1213                 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_port entry\n");
1214                 btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1215                 qla_tgt_sess->se_sess = se_sess;
1216                 nacl->qla_tgt_sess = qla_tgt_sess;
1217                 return;
1218         }
1219
1220         if (new_se_nacl == NULL) {
1221                 pr_debug("Clearing existing fc_port entry\n");
1222                 btree_remove32(&lport->lport_fcport_map, key);
1223                 return;
1224         }
1225
1226         pr_debug("Replacing existing fc_port entry w/o active nacl->qla_tgt_sess\n");
1227         btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1228         qla_tgt_sess->se_sess = se_sess;
1229         nacl->qla_tgt_sess = qla_tgt_sess;
1230
1231         pr_debug("Setup nacl->qla_tgt_sess %p by s_id for se_nacl: %p, initiatorname: %s\n",
1232             nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname);
1233 }
1234
1235 /*
1236  * Expected to be called with struct qla_hw_data->hardware_lock held
1237  */
1238 static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_loop_id(
1239         scsi_qla_host_t *vha,
1240         const uint16_t loop_id)
1241 {
1242         struct qla_hw_data *ha = vha->hw;
1243         struct tcm_qla2xxx_lport *lport;
1244         struct se_node_acl *se_nacl;
1245         struct tcm_qla2xxx_nacl *nacl;
1246         struct tcm_qla2xxx_fc_loopid *fc_loopid;
1247
1248         lport = ha->tgt.target_lport_ptr;
1249         if (!lport) {
1250                 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1251                 dump_stack();
1252                 return NULL;
1253         }
1254
1255         pr_debug("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1256
1257         fc_loopid = lport->lport_loopid_map + loop_id;
1258         se_nacl = fc_loopid->se_nacl;
1259         if (!se_nacl) {
1260                 pr_debug("Unable to locate se_nacl by loop_id: 0x%04x\n",
1261                     loop_id);
1262                 return NULL;
1263         }
1264
1265         nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1266
1267         if (!nacl->qla_tgt_sess) {
1268                 pr_err("Unable to locate struct qla_tgt_sess\n");
1269                 return NULL;
1270         }
1271
1272         return nacl->qla_tgt_sess;
1273 }
1274
1275 /*
1276  * Expected to be called with struct qla_hw_data->hardware_lock held
1277  */
1278 static void tcm_qla2xxx_set_sess_by_loop_id(
1279         struct tcm_qla2xxx_lport *lport,
1280         struct se_node_acl *new_se_nacl,
1281         struct tcm_qla2xxx_nacl *nacl,
1282         struct se_session *se_sess,
1283         struct qla_tgt_sess *qla_tgt_sess,
1284         uint16_t loop_id)
1285 {
1286         struct se_node_acl *saved_nacl;
1287         struct tcm_qla2xxx_fc_loopid *fc_loopid;
1288
1289         pr_debug("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1290
1291         fc_loopid = &((struct tcm_qla2xxx_fc_loopid *)
1292                         lport->lport_loopid_map)[loop_id];
1293
1294         saved_nacl = fc_loopid->se_nacl;
1295         if (!saved_nacl) {
1296                 pr_debug("Setting up new fc_loopid->se_nacl to new_se_nacl\n");
1297                 fc_loopid->se_nacl = new_se_nacl;
1298                 if (qla_tgt_sess->se_sess != se_sess)
1299                         qla_tgt_sess->se_sess = se_sess;
1300                 if (nacl->qla_tgt_sess != qla_tgt_sess)
1301                         nacl->qla_tgt_sess = qla_tgt_sess;
1302                 return;
1303         }
1304
1305         if (nacl->qla_tgt_sess) {
1306                 if (new_se_nacl == NULL) {
1307                         pr_debug("Clearing nacl->qla_tgt_sess and fc_loopid->se_nacl\n");
1308                         fc_loopid->se_nacl = NULL;
1309                         nacl->qla_tgt_sess = NULL;
1310                         return;
1311                 }
1312
1313                 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_loopid->se_nacl\n");
1314                 fc_loopid->se_nacl = new_se_nacl;
1315                 if (qla_tgt_sess->se_sess != se_sess)
1316                         qla_tgt_sess->se_sess = se_sess;
1317                 if (nacl->qla_tgt_sess != qla_tgt_sess)
1318                         nacl->qla_tgt_sess = qla_tgt_sess;
1319                 return;
1320         }
1321
1322         if (new_se_nacl == NULL) {
1323                 pr_debug("Clearing fc_loopid->se_nacl\n");
1324                 fc_loopid->se_nacl = NULL;
1325                 return;
1326         }
1327
1328         pr_debug("Replacing existing fc_loopid->se_nacl w/o active nacl->qla_tgt_sess\n");
1329         fc_loopid->se_nacl = new_se_nacl;
1330         if (qla_tgt_sess->se_sess != se_sess)
1331                 qla_tgt_sess->se_sess = se_sess;
1332         if (nacl->qla_tgt_sess != qla_tgt_sess)
1333                 nacl->qla_tgt_sess = qla_tgt_sess;
1334
1335         pr_debug("Setup nacl->qla_tgt_sess %p by loop_id for se_nacl: %p, initiatorname: %s\n",
1336             nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname);
1337 }
1338
1339 /*
1340  * Should always be called with qla_hw_data->hardware_lock held.
1341  */
1342 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *lport,
1343                 struct tcm_qla2xxx_nacl *nacl, struct qla_tgt_sess *sess)
1344 {
1345         struct se_session *se_sess = sess->se_sess;
1346         unsigned char be_sid[3];
1347
1348         be_sid[0] = sess->s_id.b.domain;
1349         be_sid[1] = sess->s_id.b.area;
1350         be_sid[2] = sess->s_id.b.al_pa;
1351
1352         tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess,
1353                                 sess, be_sid);
1354         tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess,
1355                                 sess, sess->loop_id);
1356 }
1357
1358 static void tcm_qla2xxx_free_session(struct qla_tgt_sess *sess)
1359 {
1360         struct qla_tgt *tgt = sess->tgt;
1361         struct qla_hw_data *ha = tgt->ha;
1362         struct se_session *se_sess;
1363         struct se_node_acl *se_nacl;
1364         struct tcm_qla2xxx_lport *lport;
1365         struct tcm_qla2xxx_nacl *nacl;
1366
1367         BUG_ON(in_interrupt());
1368
1369         se_sess = sess->se_sess;
1370         if (!se_sess) {
1371                 pr_err("struct qla_tgt_sess->se_sess is NULL\n");
1372                 dump_stack();
1373                 return;
1374         }
1375         se_nacl = se_sess->se_node_acl;
1376         nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1377
1378         lport = ha->tgt.target_lport_ptr;
1379         if (!lport) {
1380                 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1381                 dump_stack();
1382                 return;
1383         }
1384         target_wait_for_sess_cmds(se_sess, 0);
1385
1386         transport_deregister_session_configfs(sess->se_sess);
1387         transport_deregister_session(sess->se_sess);
1388 }
1389
1390 /*
1391  * Called via qlt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl()
1392  * to locate struct se_node_acl
1393  */
1394 static int tcm_qla2xxx_check_initiator_node_acl(
1395         scsi_qla_host_t *vha,
1396         unsigned char *fc_wwpn,
1397         void *qla_tgt_sess,
1398         uint8_t *s_id,
1399         uint16_t loop_id)
1400 {
1401         struct qla_hw_data *ha = vha->hw;
1402         struct tcm_qla2xxx_lport *lport;
1403         struct tcm_qla2xxx_tpg *tpg;
1404         struct tcm_qla2xxx_nacl *nacl;
1405         struct se_portal_group *se_tpg;
1406         struct se_node_acl *se_nacl;
1407         struct se_session *se_sess;
1408         struct qla_tgt_sess *sess = qla_tgt_sess;
1409         unsigned char port_name[36];
1410         unsigned long flags;
1411
1412         lport = ha->tgt.target_lport_ptr;
1413         if (!lport) {
1414                 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1415                 dump_stack();
1416                 return -EINVAL;
1417         }
1418         /*
1419          * Locate the TPG=1 reference..
1420          */
1421         tpg = lport->tpg_1;
1422         if (!tpg) {
1423                 pr_err("Unable to lcoate struct tcm_qla2xxx_lport->tpg_1\n");
1424                 return -EINVAL;
1425         }
1426         se_tpg = &tpg->se_tpg;
1427
1428         se_sess = transport_init_session();
1429         if (IS_ERR(se_sess)) {
1430                 pr_err("Unable to initialize struct se_session\n");
1431                 return PTR_ERR(se_sess);
1432         }
1433         /*
1434          * Format the FCP Initiator port_name into colon seperated values to
1435          * match the format by tcm_qla2xxx explict ConfigFS NodeACLs.
1436          */
1437         memset(&port_name, 0, 36);
1438         snprintf(port_name, 36, "%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x",
1439                 fc_wwpn[0], fc_wwpn[1], fc_wwpn[2], fc_wwpn[3], fc_wwpn[4],
1440                 fc_wwpn[5], fc_wwpn[6], fc_wwpn[7]);
1441         /*
1442          * Locate our struct se_node_acl either from an explict NodeACL created
1443          * via ConfigFS, or via running in TPG demo mode.
1444          */
1445         se_sess->se_node_acl = core_tpg_check_initiator_node_acl(se_tpg,
1446                                         port_name);
1447         if (!se_sess->se_node_acl) {
1448                 transport_free_session(se_sess);
1449                 return -EINVAL;
1450         }
1451         se_nacl = se_sess->se_node_acl;
1452         nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1453         /*
1454          * And now setup the new se_nacl and session pointers into our HW lport
1455          * mappings for fabric S_ID and LOOP_ID.
1456          */
1457         spin_lock_irqsave(&ha->hardware_lock, flags);
1458         tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl, se_sess,
1459                         qla_tgt_sess, s_id);
1460         tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl, se_sess,
1461                         qla_tgt_sess, loop_id);
1462         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1463         /*
1464          * Finally register the new FC Nexus with TCM
1465          */
1466         __transport_register_session(se_nacl->se_tpg, se_nacl, se_sess, sess);
1467
1468         return 0;
1469 }
1470
1471 /*
1472  * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path.
1473  */
1474 static struct qla_tgt_func_tmpl tcm_qla2xxx_template = {
1475         .handle_cmd             = tcm_qla2xxx_handle_cmd,
1476         .handle_data            = tcm_qla2xxx_handle_data,
1477         .handle_tmr             = tcm_qla2xxx_handle_tmr,
1478         .free_cmd               = tcm_qla2xxx_free_cmd,
1479         .free_mcmd              = tcm_qla2xxx_free_mcmd,
1480         .free_session           = tcm_qla2xxx_free_session,
1481         .check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl,
1482         .find_sess_by_s_id      = tcm_qla2xxx_find_sess_by_s_id,
1483         .find_sess_by_loop_id   = tcm_qla2xxx_find_sess_by_loop_id,
1484         .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map,
1485         .put_sess               = tcm_qla2xxx_put_sess,
1486         .shutdown_sess          = tcm_qla2xxx_shutdown_sess,
1487 };
1488
1489 static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport)
1490 {
1491         int rc;
1492
1493         rc = btree_init32(&lport->lport_fcport_map);
1494         if (rc) {
1495                 pr_err("Unable to initialize lport->lport_fcport_map btree\n");
1496                 return rc;
1497         }
1498
1499         lport->lport_loopid_map = vmalloc(sizeof(struct tcm_qla2xxx_fc_loopid) *
1500                                 65536);
1501         if (!lport->lport_loopid_map) {
1502                 pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n",
1503                     sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1504                 btree_destroy32(&lport->lport_fcport_map);
1505                 return -ENOMEM;
1506         }
1507         memset(lport->lport_loopid_map, 0, sizeof(struct tcm_qla2xxx_fc_loopid)
1508                * 65536);
1509         pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n",
1510                sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1511         return 0;
1512 }
1513
1514 static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha)
1515 {
1516         struct qla_hw_data *ha = vha->hw;
1517         struct tcm_qla2xxx_lport *lport;
1518         /*
1519          * Setup local pointer to vha, NPIV VP pointer (if present) and
1520          * vha->tcm_lport pointer
1521          */
1522         lport = (struct tcm_qla2xxx_lport *)ha->tgt.target_lport_ptr;
1523         lport->qla_vha = vha;
1524
1525         return 0;
1526 }
1527
1528 static struct se_wwn *tcm_qla2xxx_make_lport(
1529         struct target_fabric_configfs *tf,
1530         struct config_group *group,
1531         const char *name)
1532 {
1533         struct tcm_qla2xxx_lport *lport;
1534         u64 wwpn;
1535         int ret = -ENODEV;
1536
1537         if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0)
1538                 return ERR_PTR(-EINVAL);
1539
1540         lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1541         if (!lport) {
1542                 pr_err("Unable to allocate struct tcm_qla2xxx_lport\n");
1543                 return ERR_PTR(-ENOMEM);
1544         }
1545         lport->lport_wwpn = wwpn;
1546         tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN,
1547                                 wwpn);
1548
1549         ret = tcm_qla2xxx_init_lport(lport);
1550         if (ret != 0)
1551                 goto out;
1552
1553         ret = qlt_lport_register(&tcm_qla2xxx_template, wwpn,
1554                                 tcm_qla2xxx_lport_register_cb, lport);
1555         if (ret != 0)
1556                 goto out_lport;
1557
1558         return &lport->lport_wwn;
1559 out_lport:
1560         vfree(lport->lport_loopid_map);
1561         btree_destroy32(&lport->lport_fcport_map);
1562 out:
1563         kfree(lport);
1564         return ERR_PTR(ret);
1565 }
1566
1567 static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn)
1568 {
1569         struct tcm_qla2xxx_lport *lport = container_of(wwn,
1570                         struct tcm_qla2xxx_lport, lport_wwn);
1571         struct scsi_qla_host *vha = lport->qla_vha;
1572         struct qla_hw_data *ha = vha->hw;
1573         struct se_node_acl *node;
1574         u32 key = 0;
1575
1576         /*
1577          * Call into qla2x_target.c LLD logic to complete the
1578          * shutdown of struct qla_tgt after the call to
1579          * qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above..
1580          */
1581         if (ha->tgt.qla_tgt && !ha->tgt.qla_tgt->tgt_stopped)
1582                 qlt_stop_phase2(ha->tgt.qla_tgt);
1583
1584         qlt_lport_deregister(vha);
1585
1586         vfree(lport->lport_loopid_map);
1587         btree_for_each_safe32(&lport->lport_fcport_map, key, node)
1588                 btree_remove32(&lport->lport_fcport_map, key);
1589         btree_destroy32(&lport->lport_fcport_map);
1590         kfree(lport);
1591 }
1592
1593 static struct se_wwn *tcm_qla2xxx_npiv_make_lport(
1594         struct target_fabric_configfs *tf,
1595         struct config_group *group,
1596         const char *name)
1597 {
1598         struct tcm_qla2xxx_lport *lport;
1599         u64 npiv_wwpn, npiv_wwnn;
1600         int ret;
1601
1602         if (tcm_qla2xxx_npiv_parse_wwn(name, strlen(name)+1,
1603                                 &npiv_wwpn, &npiv_wwnn) < 0)
1604                 return ERR_PTR(-EINVAL);
1605
1606         lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1607         if (!lport) {
1608                 pr_err("Unable to allocate struct tcm_qla2xxx_lport for NPIV\n");
1609                 return ERR_PTR(-ENOMEM);
1610         }
1611         lport->lport_npiv_wwpn = npiv_wwpn;
1612         lport->lport_npiv_wwnn = npiv_wwnn;
1613         tcm_qla2xxx_npiv_format_wwn(&lport->lport_npiv_name[0],
1614                         TCM_QLA2XXX_NAMELEN, npiv_wwpn, npiv_wwnn);
1615
1616 /* FIXME: tcm_qla2xxx_npiv_make_lport */
1617         ret = -ENOSYS;
1618         if (ret != 0)
1619                 goto out;
1620
1621         return &lport->lport_wwn;
1622 out:
1623         kfree(lport);
1624         return ERR_PTR(ret);
1625 }
1626
1627 static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn)
1628 {
1629         struct tcm_qla2xxx_lport *lport = container_of(wwn,
1630                         struct tcm_qla2xxx_lport, lport_wwn);
1631         struct scsi_qla_host *vha = lport->qla_vha;
1632         struct Scsi_Host *sh = vha->host;
1633         /*
1634          * Notify libfc that we want to release the lport->npiv_vport
1635          */
1636         fc_vport_terminate(lport->npiv_vport);
1637
1638         scsi_host_put(sh);
1639         kfree(lport);
1640 }
1641
1642
1643 static ssize_t tcm_qla2xxx_wwn_show_attr_version(
1644         struct target_fabric_configfs *tf,
1645         char *page)
1646 {
1647         return sprintf(page,
1648             "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s on "
1649             UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname,
1650             utsname()->machine);
1651 }
1652
1653 TF_WWN_ATTR_RO(tcm_qla2xxx, version);
1654
1655 static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = {
1656         &tcm_qla2xxx_wwn_version.attr,
1657         NULL,
1658 };
1659
1660 static struct target_core_fabric_ops tcm_qla2xxx_ops = {
1661         .get_fabric_name                = tcm_qla2xxx_get_fabric_name,
1662         .get_fabric_proto_ident         = tcm_qla2xxx_get_fabric_proto_ident,
1663         .tpg_get_wwn                    = tcm_qla2xxx_get_fabric_wwn,
1664         .tpg_get_tag                    = tcm_qla2xxx_get_tag,
1665         .tpg_get_default_depth          = tcm_qla2xxx_get_default_depth,
1666         .tpg_get_pr_transport_id        = tcm_qla2xxx_get_pr_transport_id,
1667         .tpg_get_pr_transport_id_len    = tcm_qla2xxx_get_pr_transport_id_len,
1668         .tpg_parse_pr_out_transport_id  = tcm_qla2xxx_parse_pr_out_transport_id,
1669         .tpg_check_demo_mode            = tcm_qla2xxx_check_demo_mode,
1670         .tpg_check_demo_mode_cache      = tcm_qla2xxx_check_demo_mode_cache,
1671         .tpg_check_demo_mode_write_protect =
1672                                         tcm_qla2xxx_check_demo_write_protect,
1673         .tpg_check_prod_mode_write_protect =
1674                                         tcm_qla2xxx_check_prod_write_protect,
1675         .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_true,
1676         .tpg_alloc_fabric_acl           = tcm_qla2xxx_alloc_fabric_acl,
1677         .tpg_release_fabric_acl         = tcm_qla2xxx_release_fabric_acl,
1678         .tpg_get_inst_index             = tcm_qla2xxx_tpg_get_inst_index,
1679         .check_stop_free                = tcm_qla2xxx_check_stop_free,
1680         .release_cmd                    = tcm_qla2xxx_release_cmd,
1681         .put_session                    = tcm_qla2xxx_put_session,
1682         .shutdown_session               = tcm_qla2xxx_shutdown_session,
1683         .close_session                  = tcm_qla2xxx_close_session,
1684         .sess_get_index                 = tcm_qla2xxx_sess_get_index,
1685         .sess_get_initiator_sid         = NULL,
1686         .write_pending                  = tcm_qla2xxx_write_pending,
1687         .write_pending_status           = tcm_qla2xxx_write_pending_status,
1688         .set_default_node_attributes    = tcm_qla2xxx_set_default_node_attrs,
1689         .get_task_tag                   = tcm_qla2xxx_get_task_tag,
1690         .get_cmd_state                  = tcm_qla2xxx_get_cmd_state,
1691         .queue_data_in                  = tcm_qla2xxx_queue_data_in,
1692         .queue_status                   = tcm_qla2xxx_queue_status,
1693         .queue_tm_rsp                   = tcm_qla2xxx_queue_tm_rsp,
1694         .get_fabric_sense_len           = tcm_qla2xxx_get_fabric_sense_len,
1695         .set_fabric_sense_len           = tcm_qla2xxx_set_fabric_sense_len,
1696         /*
1697          * Setup function pointers for generic logic in
1698          * target_core_fabric_configfs.c
1699          */
1700         .fabric_make_wwn                = tcm_qla2xxx_make_lport,
1701         .fabric_drop_wwn                = tcm_qla2xxx_drop_lport,
1702         .fabric_make_tpg                = tcm_qla2xxx_make_tpg,
1703         .fabric_drop_tpg                = tcm_qla2xxx_drop_tpg,
1704         .fabric_post_link               = NULL,
1705         .fabric_pre_unlink              = NULL,
1706         .fabric_make_np                 = NULL,
1707         .fabric_drop_np                 = NULL,
1708         .fabric_make_nodeacl            = tcm_qla2xxx_make_nodeacl,
1709         .fabric_drop_nodeacl            = tcm_qla2xxx_drop_nodeacl,
1710 };
1711
1712 static struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = {
1713         .get_fabric_name                = tcm_qla2xxx_npiv_get_fabric_name,
1714         .get_fabric_proto_ident         = tcm_qla2xxx_get_fabric_proto_ident,
1715         .tpg_get_wwn                    = tcm_qla2xxx_npiv_get_fabric_wwn,
1716         .tpg_get_tag                    = tcm_qla2xxx_get_tag,
1717         .tpg_get_default_depth          = tcm_qla2xxx_get_default_depth,
1718         .tpg_get_pr_transport_id        = tcm_qla2xxx_get_pr_transport_id,
1719         .tpg_get_pr_transport_id_len    = tcm_qla2xxx_get_pr_transport_id_len,
1720         .tpg_parse_pr_out_transport_id  = tcm_qla2xxx_parse_pr_out_transport_id,
1721         .tpg_check_demo_mode            = tcm_qla2xxx_check_false,
1722         .tpg_check_demo_mode_cache      = tcm_qla2xxx_check_true,
1723         .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_true,
1724         .tpg_check_prod_mode_write_protect = tcm_qla2xxx_check_false,
1725         .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_true,
1726         .tpg_alloc_fabric_acl           = tcm_qla2xxx_alloc_fabric_acl,
1727         .tpg_release_fabric_acl         = tcm_qla2xxx_release_fabric_acl,
1728         .tpg_get_inst_index             = tcm_qla2xxx_tpg_get_inst_index,
1729         .release_cmd                    = tcm_qla2xxx_release_cmd,
1730         .put_session                    = tcm_qla2xxx_put_session,
1731         .shutdown_session               = tcm_qla2xxx_shutdown_session,
1732         .close_session                  = tcm_qla2xxx_close_session,
1733         .sess_get_index                 = tcm_qla2xxx_sess_get_index,
1734         .sess_get_initiator_sid         = NULL,
1735         .write_pending                  = tcm_qla2xxx_write_pending,
1736         .write_pending_status           = tcm_qla2xxx_write_pending_status,
1737         .set_default_node_attributes    = tcm_qla2xxx_set_default_node_attrs,
1738         .get_task_tag                   = tcm_qla2xxx_get_task_tag,
1739         .get_cmd_state                  = tcm_qla2xxx_get_cmd_state,
1740         .queue_data_in                  = tcm_qla2xxx_queue_data_in,
1741         .queue_status                   = tcm_qla2xxx_queue_status,
1742         .queue_tm_rsp                   = tcm_qla2xxx_queue_tm_rsp,
1743         .get_fabric_sense_len           = tcm_qla2xxx_get_fabric_sense_len,
1744         .set_fabric_sense_len           = tcm_qla2xxx_set_fabric_sense_len,
1745         /*
1746          * Setup function pointers for generic logic in
1747          * target_core_fabric_configfs.c
1748          */
1749         .fabric_make_wwn                = tcm_qla2xxx_npiv_make_lport,
1750         .fabric_drop_wwn                = tcm_qla2xxx_npiv_drop_lport,
1751         .fabric_make_tpg                = tcm_qla2xxx_npiv_make_tpg,
1752         .fabric_drop_tpg                = tcm_qla2xxx_drop_tpg,
1753         .fabric_post_link               = NULL,
1754         .fabric_pre_unlink              = NULL,
1755         .fabric_make_np                 = NULL,
1756         .fabric_drop_np                 = NULL,
1757         .fabric_make_nodeacl            = tcm_qla2xxx_make_nodeacl,
1758         .fabric_drop_nodeacl            = tcm_qla2xxx_drop_nodeacl,
1759 };
1760
1761 static int tcm_qla2xxx_register_configfs(void)
1762 {
1763         struct target_fabric_configfs *fabric, *npiv_fabric;
1764         int ret;
1765
1766         pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on "
1767             UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname,
1768             utsname()->machine);
1769         /*
1770          * Register the top level struct config_item_type with TCM core
1771          */
1772         fabric = target_fabric_configfs_init(THIS_MODULE, "qla2xxx");
1773         if (IS_ERR(fabric)) {
1774                 pr_err("target_fabric_configfs_init() failed\n");
1775                 return PTR_ERR(fabric);
1776         }
1777         /*
1778          * Setup fabric->tf_ops from our local tcm_qla2xxx_ops
1779          */
1780         fabric->tf_ops = tcm_qla2xxx_ops;
1781         /*
1782          * Setup default attribute lists for various fabric->tf_cit_tmpl
1783          */
1784         TF_CIT_TMPL(fabric)->tfc_wwn_cit.ct_attrs = tcm_qla2xxx_wwn_attrs;
1785         TF_CIT_TMPL(fabric)->tfc_tpg_base_cit.ct_attrs = tcm_qla2xxx_tpg_attrs;
1786         TF_CIT_TMPL(fabric)->tfc_tpg_attrib_cit.ct_attrs =
1787                                                 tcm_qla2xxx_tpg_attrib_attrs;
1788         TF_CIT_TMPL(fabric)->tfc_tpg_param_cit.ct_attrs = NULL;
1789         TF_CIT_TMPL(fabric)->tfc_tpg_np_base_cit.ct_attrs = NULL;
1790         TF_CIT_TMPL(fabric)->tfc_tpg_nacl_base_cit.ct_attrs = NULL;
1791         TF_CIT_TMPL(fabric)->tfc_tpg_nacl_attrib_cit.ct_attrs = NULL;
1792         TF_CIT_TMPL(fabric)->tfc_tpg_nacl_auth_cit.ct_attrs = NULL;
1793         TF_CIT_TMPL(fabric)->tfc_tpg_nacl_param_cit.ct_attrs = NULL;
1794         /*
1795          * Register the fabric for use within TCM
1796          */
1797         ret = target_fabric_configfs_register(fabric);
1798         if (ret < 0) {
1799                 pr_err("target_fabric_configfs_register() failed for TCM_QLA2XXX\n");
1800                 return ret;
1801         }
1802         /*
1803          * Setup our local pointer to *fabric
1804          */
1805         tcm_qla2xxx_fabric_configfs = fabric;
1806         pr_debug("TCM_QLA2XXX[0] - Set fabric -> tcm_qla2xxx_fabric_configfs\n");
1807
1808         /*
1809          * Register the top level struct config_item_type for NPIV with TCM core
1810          */
1811         npiv_fabric = target_fabric_configfs_init(THIS_MODULE, "qla2xxx_npiv");
1812         if (IS_ERR(npiv_fabric)) {
1813                 pr_err("target_fabric_configfs_init() failed\n");
1814                 ret = PTR_ERR(npiv_fabric);
1815                 goto out_fabric;
1816         }
1817         /*
1818          * Setup fabric->tf_ops from our local tcm_qla2xxx_npiv_ops
1819          */
1820         npiv_fabric->tf_ops = tcm_qla2xxx_npiv_ops;
1821         /*
1822          * Setup default attribute lists for various npiv_fabric->tf_cit_tmpl
1823          */
1824         TF_CIT_TMPL(npiv_fabric)->tfc_wwn_cit.ct_attrs = tcm_qla2xxx_wwn_attrs;
1825         TF_CIT_TMPL(npiv_fabric)->tfc_tpg_base_cit.ct_attrs = NULL;
1826         TF_CIT_TMPL(npiv_fabric)->tfc_tpg_attrib_cit.ct_attrs = NULL;
1827         TF_CIT_TMPL(npiv_fabric)->tfc_tpg_param_cit.ct_attrs = NULL;
1828         TF_CIT_TMPL(npiv_fabric)->tfc_tpg_np_base_cit.ct_attrs = NULL;
1829         TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_base_cit.ct_attrs = NULL;
1830         TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_attrib_cit.ct_attrs = NULL;
1831         TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_auth_cit.ct_attrs = NULL;
1832         TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_param_cit.ct_attrs = NULL;
1833         /*
1834          * Register the npiv_fabric for use within TCM
1835          */
1836         ret = target_fabric_configfs_register(npiv_fabric);
1837         if (ret < 0) {
1838                 pr_err("target_fabric_configfs_register() failed for TCM_QLA2XXX\n");
1839                 goto out_fabric;
1840         }
1841         /*
1842          * Setup our local pointer to *npiv_fabric
1843          */
1844         tcm_qla2xxx_npiv_fabric_configfs = npiv_fabric;
1845         pr_debug("TCM_QLA2XXX[0] - Set fabric -> tcm_qla2xxx_npiv_fabric_configfs\n");
1846
1847         tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free",
1848                                                 WQ_MEM_RECLAIM, 0);
1849         if (!tcm_qla2xxx_free_wq) {
1850                 ret = -ENOMEM;
1851                 goto out_fabric_npiv;
1852         }
1853
1854         tcm_qla2xxx_cmd_wq = alloc_workqueue("tcm_qla2xxx_cmd", 0, 0);
1855         if (!tcm_qla2xxx_cmd_wq) {
1856                 ret = -ENOMEM;
1857                 goto out_free_wq;
1858         }
1859
1860         return 0;
1861
1862 out_free_wq:
1863         destroy_workqueue(tcm_qla2xxx_free_wq);
1864 out_fabric_npiv:
1865         target_fabric_configfs_deregister(tcm_qla2xxx_npiv_fabric_configfs);
1866 out_fabric:
1867         target_fabric_configfs_deregister(tcm_qla2xxx_fabric_configfs);
1868         return ret;
1869 }
1870
1871 static void tcm_qla2xxx_deregister_configfs(void)
1872 {
1873         destroy_workqueue(tcm_qla2xxx_cmd_wq);
1874         destroy_workqueue(tcm_qla2xxx_free_wq);
1875
1876         target_fabric_configfs_deregister(tcm_qla2xxx_fabric_configfs);
1877         tcm_qla2xxx_fabric_configfs = NULL;
1878         pr_debug("TCM_QLA2XXX[0] - Cleared tcm_qla2xxx_fabric_configfs\n");
1879
1880         target_fabric_configfs_deregister(tcm_qla2xxx_npiv_fabric_configfs);
1881         tcm_qla2xxx_npiv_fabric_configfs = NULL;
1882         pr_debug("TCM_QLA2XXX[0] - Cleared tcm_qla2xxx_npiv_fabric_configfs\n");
1883 }
1884
1885 static int __init tcm_qla2xxx_init(void)
1886 {
1887         int ret;
1888
1889         ret = tcm_qla2xxx_register_configfs();
1890         if (ret < 0)
1891                 return ret;
1892
1893         return 0;
1894 }
1895
1896 static void __exit tcm_qla2xxx_exit(void)
1897 {
1898         tcm_qla2xxx_deregister_configfs();
1899 }
1900
1901 MODULE_DESCRIPTION("TCM QLA2XXX series NPIV enabled fabric driver");
1902 MODULE_LICENSE("GPL");
1903 module_init(tcm_qla2xxx_init);
1904 module_exit(tcm_qla2xxx_exit);