Pileus Git - ~andy/linux/blob - drivers/scsi/qla2xxx/tcm_qla2xxx.c

   1 /*******************************************************************************
   2  * This file contains tcm implementation using v4 configfs fabric infrastructure
   3  * for QLogic target mode HBAs
   4  *
   5  * ?? Copyright 2010-2011 RisingTide Systems LLC.
   6  *
   7  * Licensed to the Linux Foundation under the General Public License (GPL)
   8  * version 2.
   9  *
  10  * Author: Nicholas A. Bellinger <nab@risingtidesystems.com>
  11  *
  12  * tcm_qla2xxx_parse_wwn() and tcm_qla2xxx_format_wwn() contains code from
  13  * the TCM_FC / Open-FCoE.org fabric module.
  14  *
  15  * Copyright (c) 2010 Cisco Systems, Inc
  16  *
  17  * This program is free software; you can redistribute it and/or modify
  18  * it under the terms of the GNU General Public License as published by
  19  * the Free Software Foundation; either version 2 of the License, or
  20  * (at your option) any later version.
  21  *
  22  * This program is distributed in the hope that it will be useful,
  23  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  24  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  25  * GNU General Public License for more details.
  26  ****************************************************************************/
  27
  28
  29 #include <linux/module.h>
  30 #include <linux/moduleparam.h>
  31 #include <generated/utsrelease.h>
  32 #include <linux/utsname.h>
  33 #include <linux/init.h>
  34 #include <linux/list.h>
  35 #include <linux/slab.h>
  36 #include <linux/kthread.h>
  37 #include <linux/types.h>
  38 #include <linux/string.h>
  39 #include <linux/configfs.h>
  40 #include <linux/ctype.h>
  41 #include <linux/string.h>
  42 #include <linux/ctype.h>
  43 #include <asm/unaligned.h>
  44 #include <scsi/scsi.h>
  45 #include <scsi/scsi_host.h>
  46 #include <scsi/scsi_device.h>
  47 #include <scsi/scsi_cmnd.h>
  48 #include <target/target_core_base.h>
  49 #include <target/target_core_fabric.h>
  50 #include <target/target_core_fabric_configfs.h>
  51 #include <target/target_core_configfs.h>
  52 #include <target/configfs_macros.h>
  53
  54 #include "qla_def.h"
  55 #include "qla_target.h"
  56 #include "tcm_qla2xxx.h"
  57
  58 struct workqueue_struct *tcm_qla2xxx_free_wq;
  59 struct workqueue_struct *tcm_qla2xxx_cmd_wq;
  60
  61 static int tcm_qla2xxx_check_true(struct se_portal_group *se_tpg)
  62 {
  63         return 1;
  64 }
  65
  66 static int tcm_qla2xxx_check_false(struct se_portal_group *se_tpg)
  67 {
  68         return 0;
  69 }
  70
  71 /*
  72  * Parse WWN.
  73  * If strict, we require lower-case hex and colon separators to be sure
  74  * the name is the same as what would be generated by ft_format_wwn()
  75  * so the name and wwn are mapped one-to-one.
  76  */
  77 static ssize_t tcm_qla2xxx_parse_wwn(const char *name, u64 *wwn, int strict)
  78 {
  79         const char *cp;
  80         char c;
  81         u32 nibble;
  82         u32 byte = 0;
  83         u32 pos = 0;
  84         u32 err;
  85
  86         *wwn = 0;
  87         for (cp = name; cp < &name[TCM_QLA2XXX_NAMELEN - 1]; cp++) {
  88                 c = *cp;
  89                 if (c == '\n' && cp[1] == '\0')
  90                         continue;
  91                 if (strict && pos++ == 2 && byte++ < 7) {
  92                         pos = 0;
  93                         if (c == ':')
  94                                 continue;
  95                         err = 1;
  96                         goto fail;
  97                 }
  98                 if (c == '\0') {
  99                         err = 2;
 100                         if (strict && byte != 8)
 101                                 goto fail;
 102                         return cp - name;
 103                 }
 104                 err = 3;
 105                 if (isdigit(c))
 106                         nibble = c - '0';
 107                 else if (isxdigit(c) && (islower(c) || !strict))
 108                         nibble = tolower(c) - 'a' + 10;
 109                 else
 110                         goto fail;
 111                 *wwn = (*wwn << 4) | nibble;
 112         }
 113         err = 4;
 114 fail:
 115         pr_debug("err %u len %zu pos %u byte %u\n",
 116                         err, cp - name, pos, byte);
 117         return -1;
 118 }
 119
 120 static ssize_t tcm_qla2xxx_format_wwn(char *buf, size_t len, u64 wwn)
 121 {
 122         u8 b[8];
 123
 124         put_unaligned_be64(wwn, b);
 125         return snprintf(buf, len,
 126                 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x",
 127                 b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7]);
 128 }
 129
 130 static char *tcm_qla2xxx_get_fabric_name(void)
 131 {
 132         return "qla2xxx";
 133 }
 134
 135 /*
 136  * From drivers/scsi/scsi_transport_fc.c:fc_parse_wwn
 137  */
 138 static int tcm_qla2xxx_npiv_extract_wwn(const char *ns, u64 *nm)
 139 {
 140         unsigned int i, j;
 141         u8 wwn[8];
 142
 143         memset(wwn, 0, sizeof(wwn));
 144
 145         /* Validate and store the new name */
 146         for (i = 0, j = 0; i < 16; i++) {
 147                 int value;
 148
 149                 value = hex_to_bin(*ns++);
 150                 if (value >= 0)
 151                         j = (j << 4) | value;
 152                 else
 153                         return -EINVAL;
 154
 155                 if (i % 2) {
 156                         wwn[i/2] = j & 0xff;
 157                         j = 0;
 158                 }
 159         }
 160
 161         *nm = wwn_to_u64(wwn);
 162         return 0;
 163 }
 164
 165 /*
 166  * This parsing logic follows drivers/scsi/scsi_transport_fc.c:
 167  * store_fc_host_vport_create()
 168  */
 169 static int tcm_qla2xxx_npiv_parse_wwn(
 170         const char *name,
 171         size_t count,
 172         u64 *wwpn,
 173         u64 *wwnn)
 174 {
 175         unsigned int cnt = count;
 176         int rc;
 177
 178         *wwpn = 0;
 179         *wwnn = 0;
 180
 181         /* count may include a LF at end of string */
 182         if (name[cnt-1] == '\n')
 183                 cnt--;
 184
 185         /* validate we have enough characters for WWPN */
 186         if ((cnt != (16+1+16)) || (name[16] != ':'))
 187                 return -EINVAL;
 188
 189         rc = tcm_qla2xxx_npiv_extract_wwn(&name[0], wwpn);
 190         if (rc != 0)
 191                 return rc;
 192
 193         rc = tcm_qla2xxx_npiv_extract_wwn(&name[17], wwnn);
 194         if (rc != 0)
 195                 return rc;
 196
 197         return 0;
 198 }
 199
 200 static ssize_t tcm_qla2xxx_npiv_format_wwn(char *buf, size_t len,
 201                                         u64 wwpn, u64 wwnn)
 202 {
 203         u8 b[8], b2[8];
 204
 205         put_unaligned_be64(wwpn, b);
 206         put_unaligned_be64(wwnn, b2);
 207         return snprintf(buf, len,
 208                 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x,"
 209                 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x",
 210                 b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7],
 211                 b2[0], b2[1], b2[2], b2[3], b2[4], b2[5], b2[6], b2[7]);
 212 }
 213
 214 static char *tcm_qla2xxx_npiv_get_fabric_name(void)
 215 {
 216         return "qla2xxx_npiv";
 217 }
 218
 219 static u8 tcm_qla2xxx_get_fabric_proto_ident(struct se_portal_group *se_tpg)
 220 {
 221         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 222                                 struct tcm_qla2xxx_tpg, se_tpg);
 223         struct tcm_qla2xxx_lport *lport = tpg->lport;
 224         u8 proto_id;
 225
 226         switch (lport->lport_proto_id) {
 227         case SCSI_PROTOCOL_FCP:
 228         default:
 229                 proto_id = fc_get_fabric_proto_ident(se_tpg);
 230                 break;
 231         }
 232
 233         return proto_id;
 234 }
 235
 236 static char *tcm_qla2xxx_get_fabric_wwn(struct se_portal_group *se_tpg)
 237 {
 238         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 239                                 struct tcm_qla2xxx_tpg, se_tpg);
 240         struct tcm_qla2xxx_lport *lport = tpg->lport;
 241
 242         return &lport->lport_name[0];
 243 }
 244
 245 static char *tcm_qla2xxx_npiv_get_fabric_wwn(struct se_portal_group *se_tpg)
 246 {
 247         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 248                                 struct tcm_qla2xxx_tpg, se_tpg);
 249         struct tcm_qla2xxx_lport *lport = tpg->lport;
 250
 251         return &lport->lport_npiv_name[0];
 252 }
 253
 254 static u16 tcm_qla2xxx_get_tag(struct se_portal_group *se_tpg)
 255 {
 256         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 257                                 struct tcm_qla2xxx_tpg, se_tpg);
 258         return tpg->lport_tpgt;
 259 }
 260
 261 static u32 tcm_qla2xxx_get_default_depth(struct se_portal_group *se_tpg)
 262 {
 263         return 1;
 264 }
 265
 266 static u32 tcm_qla2xxx_get_pr_transport_id(
 267         struct se_portal_group *se_tpg,
 268         struct se_node_acl *se_nacl,
 269         struct t10_pr_registration *pr_reg,
 270         int *format_code,
 271         unsigned char *buf)
 272 {
 273         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 274                                 struct tcm_qla2xxx_tpg, se_tpg);
 275         struct tcm_qla2xxx_lport *lport = tpg->lport;
 276         int ret = 0;
 277
 278         switch (lport->lport_proto_id) {
 279         case SCSI_PROTOCOL_FCP:
 280         default:
 281                 ret = fc_get_pr_transport_id(se_tpg, se_nacl, pr_reg,
 282                                         format_code, buf);
 283                 break;
 284         }
 285
 286         return ret;
 287 }
 288
 289 static u32 tcm_qla2xxx_get_pr_transport_id_len(
 290         struct se_portal_group *se_tpg,
 291         struct se_node_acl *se_nacl,
 292         struct t10_pr_registration *pr_reg,
 293         int *format_code)
 294 {
 295         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 296                                 struct tcm_qla2xxx_tpg, se_tpg);
 297         struct tcm_qla2xxx_lport *lport = tpg->lport;
 298         int ret = 0;
 299
 300         switch (lport->lport_proto_id) {
 301         case SCSI_PROTOCOL_FCP:
 302         default:
 303                 ret = fc_get_pr_transport_id_len(se_tpg, se_nacl, pr_reg,
 304                                         format_code);
 305                 break;
 306         }
 307
 308         return ret;
 309 }
 310
 311 static char *tcm_qla2xxx_parse_pr_out_transport_id(
 312         struct se_portal_group *se_tpg,
 313         const char *buf,
 314         u32 *out_tid_len,
 315         char **port_nexus_ptr)
 316 {
 317         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 318                                 struct tcm_qla2xxx_tpg, se_tpg);
 319         struct tcm_qla2xxx_lport *lport = tpg->lport;
 320         char *tid = NULL;
 321
 322         switch (lport->lport_proto_id) {
 323         case SCSI_PROTOCOL_FCP:
 324         default:
 325                 tid = fc_parse_pr_out_transport_id(se_tpg, buf, out_tid_len,
 326                                         port_nexus_ptr);
 327                 break;
 328         }
 329
 330         return tid;
 331 }
 332
 333 static int tcm_qla2xxx_check_demo_mode(struct se_portal_group *se_tpg)
 334 {
 335         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 336                                 struct tcm_qla2xxx_tpg, se_tpg);
 337
 338         return QLA_TPG_ATTRIB(tpg)->generate_node_acls;
 339 }
 340
 341 static int tcm_qla2xxx_check_demo_mode_cache(struct se_portal_group *se_tpg)
 342 {
 343         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 344                                 struct tcm_qla2xxx_tpg, se_tpg);
 345
 346         return QLA_TPG_ATTRIB(tpg)->cache_dynamic_acls;
 347 }
 348
 349 static int tcm_qla2xxx_check_demo_write_protect(struct se_portal_group *se_tpg)
 350 {
 351         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 352                                 struct tcm_qla2xxx_tpg, se_tpg);
 353
 354         return QLA_TPG_ATTRIB(tpg)->demo_mode_write_protect;
 355 }
 356
 357 static int tcm_qla2xxx_check_prod_write_protect(struct se_portal_group *se_tpg)
 358 {
 359         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 360                                 struct tcm_qla2xxx_tpg, se_tpg);
 361
 362         return QLA_TPG_ATTRIB(tpg)->prod_mode_write_protect;
 363 }
 364
 365 static struct se_node_acl *tcm_qla2xxx_alloc_fabric_acl(
 366         struct se_portal_group *se_tpg)
 367 {
 368         struct tcm_qla2xxx_nacl *nacl;
 369
 370         nacl = kzalloc(sizeof(struct tcm_qla2xxx_nacl), GFP_KERNEL);
 371         if (!nacl) {
 372                 pr_err("Unable to alocate struct tcm_qla2xxx_nacl\n");
 373                 return NULL;
 374         }
 375
 376         return &nacl->se_node_acl;
 377 }
 378
 379 static void tcm_qla2xxx_release_fabric_acl(
 380         struct se_portal_group *se_tpg,
 381         struct se_node_acl *se_nacl)
 382 {
 383         struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
 384                         struct tcm_qla2xxx_nacl, se_node_acl);
 385         kfree(nacl);
 386 }
 387
 388 static u32 tcm_qla2xxx_tpg_get_inst_index(struct se_portal_group *se_tpg)
 389 {
 390         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 391                                 struct tcm_qla2xxx_tpg, se_tpg);
 392
 393         return tpg->lport_tpgt;
 394 }
 395
 396 static void tcm_qla2xxx_complete_mcmd(struct work_struct *work)
 397 {
 398         struct qla_tgt_mgmt_cmd *mcmd = container_of(work,
 399                         struct qla_tgt_mgmt_cmd, free_work);
 400
 401         transport_generic_free_cmd(&mcmd->se_cmd, 0);
 402 }
 403
 404 /*
 405  * Called from qla_target_template->free_mcmd(), and will call
 406  * tcm_qla2xxx_release_cmd() via normal struct target_core_fabric_ops
 407  * release callback.  qla_hw_data->hardware_lock is expected to be held
 408  */
 409 static void tcm_qla2xxx_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
 410 {
 411         INIT_WORK(&mcmd->free_work, tcm_qla2xxx_complete_mcmd);
 412         queue_work(tcm_qla2xxx_free_wq, &mcmd->free_work);
 413 }
 414
 415 static void tcm_qla2xxx_complete_free(struct work_struct *work)
 416 {
 417         struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
 418
 419         transport_generic_free_cmd(&cmd->se_cmd, 0);
 420 }
 421
 422 /*
 423  * Called from qla_target_template->free_cmd(), and will call
 424  * tcm_qla2xxx_release_cmd via normal struct target_core_fabric_ops
 425  * release callback.  qla_hw_data->hardware_lock is expected to be held
 426  */
 427 static void tcm_qla2xxx_free_cmd(struct qla_tgt_cmd *cmd)
 428 {
 429         INIT_WORK(&cmd->work, tcm_qla2xxx_complete_free);
 430         queue_work(tcm_qla2xxx_free_wq, &cmd->work);
 431 }
 432
 433 /*
 434  * Called from struct target_core_fabric_ops->check_stop_free() context
 435  */
 436 static int tcm_qla2xxx_check_stop_free(struct se_cmd *se_cmd)
 437 {
 438         return target_put_sess_cmd(se_cmd->se_sess, se_cmd);
 439 }
 440
 441 /* tcm_qla2xxx_release_cmd - Callback from TCM Core to release underlying
 442  * fabric descriptor @se_cmd command to release
 443  */
 444 static void tcm_qla2xxx_release_cmd(struct se_cmd *se_cmd)
 445 {
 446         struct qla_tgt_cmd *cmd;
 447
 448         if (se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) {
 449                 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
 450                                 struct qla_tgt_mgmt_cmd, se_cmd);
 451                 qlt_free_mcmd(mcmd);
 452                 return;
 453         }
 454
 455         cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
 456         qlt_free_cmd(cmd);
 457 }
 458
 459 static int tcm_qla2xxx_shutdown_session(struct se_session *se_sess)
 460 {
 461         struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
 462         struct scsi_qla_host *vha;
 463         unsigned long flags;
 464
 465         BUG_ON(!sess);
 466         vha = sess->vha;
 467
 468         spin_lock_irqsave(&vha->hw->hardware_lock, flags);
 469         sess->tearing_down = 1;
 470         target_splice_sess_cmd_list(se_sess);
 471         spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
 472
 473         return 1;
 474 }
 475
 476 static void tcm_qla2xxx_close_session(struct se_session *se_sess)
 477 {
 478         struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
 479         struct scsi_qla_host *vha;
 480         unsigned long flags;
 481
 482         BUG_ON(!sess);
 483         vha = sess->vha;
 484
 485         spin_lock_irqsave(&vha->hw->hardware_lock, flags);
 486         qlt_unreg_sess(sess);
 487         spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
 488 }
 489
 490 static u32 tcm_qla2xxx_sess_get_index(struct se_session *se_sess)
 491 {
 492         return 0;
 493 }
 494
 495 /*
 496  * The LIO target core uses DMA_TO_DEVICE to mean that data is going
 497  * to the target (eg handling a WRITE) and DMA_FROM_DEVICE to mean
 498  * that data is coming from the target (eg handling a READ).  However,
 499  * this is just the opposite of what we have to tell the DMA mapping
 500  * layer -- eg when handling a READ, the HBA will have to DMA the data
 501  * out of memory so it can send it to the initiator, which means we
 502  * need to use DMA_TO_DEVICE when we map the data.
 503  */
 504 static enum dma_data_direction tcm_qla2xxx_mapping_dir(struct se_cmd *se_cmd)
 505 {
 506         if (se_cmd->se_cmd_flags & SCF_BIDI)
 507                 return DMA_BIDIRECTIONAL;
 508
 509         switch (se_cmd->data_direction) {
 510         case DMA_TO_DEVICE:
 511                 return DMA_FROM_DEVICE;
 512         case DMA_FROM_DEVICE:
 513                 return DMA_TO_DEVICE;
 514         case DMA_NONE:
 515         default:
 516                 return DMA_NONE;
 517         }
 518 }
 519
 520 static int tcm_qla2xxx_write_pending(struct se_cmd *se_cmd)
 521 {
 522         struct qla_tgt_cmd *cmd = container_of(se_cmd,
 523                                 struct qla_tgt_cmd, se_cmd);
 524
 525         cmd->bufflen = se_cmd->data_length;
 526         cmd->dma_data_direction = tcm_qla2xxx_mapping_dir(se_cmd);
 527
 528         cmd->sg_cnt = se_cmd->t_data_nents;
 529         cmd->sg = se_cmd->t_data_sg;
 530
 531         /*
 532          * qla_target.c:qlt_rdy_to_xfer() will call pci_map_sg() to setup
 533          * the SGL mappings into PCIe memory for incoming FCP WRITE data.
 534          */
 535         return qlt_rdy_to_xfer(cmd);
 536 }
 537
 538 static int tcm_qla2xxx_write_pending_status(struct se_cmd *se_cmd)
 539 {
 540         unsigned long flags;
 541         /*
 542          * Check for WRITE_PENDING status to determine if we need to wait for
 543          * CTIO aborts to be posted via hardware in tcm_qla2xxx_handle_data().
 544          */
 545         spin_lock_irqsave(&se_cmd->t_state_lock, flags);
 546         if (se_cmd->t_state == TRANSPORT_WRITE_PENDING ||
 547             se_cmd->t_state == TRANSPORT_COMPLETE_QF_WP) {
 548                 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
 549                 wait_for_completion_timeout(&se_cmd->t_transport_stop_comp,
 550                                                 3000);
 551                 return 0;
 552         }
 553         spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
 554
 555         return 0;
 556 }
 557
 558 static void tcm_qla2xxx_set_default_node_attrs(struct se_node_acl *nacl)
 559 {
 560         return;
 561 }
 562
 563 static u32 tcm_qla2xxx_get_task_tag(struct se_cmd *se_cmd)
 564 {
 565         struct qla_tgt_cmd *cmd = container_of(se_cmd,
 566                                 struct qla_tgt_cmd, se_cmd);
 567
 568         return cmd->tag;
 569 }
 570
 571 static int tcm_qla2xxx_get_cmd_state(struct se_cmd *se_cmd)
 572 {
 573         return 0;
 574 }
 575
 576 /*
 577  * Called from process context in qla_target.c:qlt_do_work() code
 578  */
 579 static int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd,
 580         unsigned char *cdb, uint32_t data_length, int fcp_task_attr,
 581         int data_dir, int bidi)
 582 {
 583         struct se_cmd *se_cmd = &cmd->se_cmd;
 584         struct se_session *se_sess;
 585         struct qla_tgt_sess *sess;
 586         int flags = TARGET_SCF_ACK_KREF;
 587
 588         if (bidi)
 589                 flags |= TARGET_SCF_BIDI_OP;
 590
 591         sess = cmd->sess;
 592         if (!sess) {
 593                 pr_err("Unable to locate struct qla_tgt_sess from qla_tgt_cmd\n");
 594                 return -EINVAL;
 595         }
 596
 597         se_sess = sess->se_sess;
 598         if (!se_sess) {
 599                 pr_err("Unable to locate active struct se_session\n");
 600                 return -EINVAL;
 601         }
 602
 603         target_submit_cmd(se_cmd, se_sess, cdb, &cmd->sense_buffer[0],
 604                                 cmd->unpacked_lun, data_length, fcp_task_attr,
 605                                 data_dir, flags);
 606         return 0;
 607 }
 608
 609 static void tcm_qla2xxx_do_rsp(struct work_struct *work)
 610 {
 611         struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
 612         /*
 613          * Dispatch ->queue_status from workqueue process context
 614          */
 615         transport_generic_request_failure(&cmd->se_cmd);
 616 }
 617
 618 /*
 619  * Called from qla_target.c:qlt_do_ctio_completion()
 620  */
 621 static int tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd)
 622 {
 623         struct se_cmd *se_cmd = &cmd->se_cmd;
 624         unsigned long flags;
 625         /*
 626          * Ensure that the complete FCP WRITE payload has been received.
 627          * Otherwise return an exception via CHECK_CONDITION status.
 628          */
 629         if (!cmd->write_data_transferred) {
 630                 /*
 631                  * Check if se_cmd has already been aborted via LUN_RESET, and
 632                  * waiting upon completion in tcm_qla2xxx_write_pending_status()
 633                  */
 634                 spin_lock_irqsave(&se_cmd->t_state_lock, flags);
 635                 if (se_cmd->transport_state & CMD_T_ABORTED) {
 636                         spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
 637                         complete(&se_cmd->t_transport_stop_comp);
 638                         return 0;
 639                 }
 640                 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
 641
 642                 se_cmd->scsi_sense_reason = TCM_CHECK_CONDITION_ABORT_CMD;
 643                 INIT_WORK(&cmd->work, tcm_qla2xxx_do_rsp);
 644                 queue_work(tcm_qla2xxx_free_wq, &cmd->work);
 645                 return 0;
 646         }
 647         /*
 648          * We now tell TCM to queue this WRITE CDB with TRANSPORT_PROCESS_WRITE
 649          * status to the backstore processing thread.
 650          */
 651         return transport_generic_handle_data(&cmd->se_cmd);
 652 }
 653
 654 /*
 655  * Called from qla_target.c:qlt_issue_task_mgmt()
 656  */
 657 static int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *mcmd, uint32_t lun,
 658         uint8_t tmr_func, uint32_t tag)
 659 {
 660         struct qla_tgt_sess *sess = mcmd->sess;
 661         struct se_cmd *se_cmd = &mcmd->se_cmd;
 662
 663         return target_submit_tmr(se_cmd, sess->se_sess, NULL, lun, mcmd,
 664                         tmr_func, GFP_ATOMIC, tag, TARGET_SCF_ACK_KREF);
 665 }
 666
 667 static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd)
 668 {
 669         struct qla_tgt_cmd *cmd = container_of(se_cmd,
 670                                 struct qla_tgt_cmd, se_cmd);
 671
 672         cmd->bufflen = se_cmd->data_length;
 673         cmd->dma_data_direction = tcm_qla2xxx_mapping_dir(se_cmd);
 674         cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED);
 675
 676         cmd->sg_cnt = se_cmd->t_data_nents;
 677         cmd->sg = se_cmd->t_data_sg;
 678         cmd->offset = 0;
 679
 680         /*
 681          * Now queue completed DATA_IN the qla2xxx LLD and response ring
 682          */
 683         return qlt_xmit_response(cmd, QLA_TGT_XMIT_DATA|QLA_TGT_XMIT_STATUS,
 684                                 se_cmd->scsi_status);
 685 }
 686
 687 static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd)
 688 {
 689         struct qla_tgt_cmd *cmd = container_of(se_cmd,
 690                                 struct qla_tgt_cmd, se_cmd);
 691         int xmit_type = QLA_TGT_XMIT_STATUS;
 692
 693         cmd->bufflen = se_cmd->data_length;
 694         cmd->sg = NULL;
 695         cmd->sg_cnt = 0;
 696         cmd->offset = 0;
 697         cmd->dma_data_direction = tcm_qla2xxx_mapping_dir(se_cmd);
 698         cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED);
 699
 700         if (se_cmd->data_direction == DMA_FROM_DEVICE) {
 701                 /*
 702                  * For FCP_READ with CHECK_CONDITION status, clear cmd->bufflen
 703                  * for qla_tgt_xmit_response LLD code
 704                  */
 705                 se_cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT;
 706                 se_cmd->residual_count = se_cmd->data_length;
 707
 708                 cmd->bufflen = 0;
 709         }
 710         /*
 711          * Now queue status response to qla2xxx LLD code and response ring
 712          */
 713         return qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status);
 714 }
 715
 716 static int tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd)
 717 {
 718         struct se_tmr_req *se_tmr = se_cmd->se_tmr_req;
 719         struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
 720                                 struct qla_tgt_mgmt_cmd, se_cmd);
 721
 722         pr_debug("queue_tm_rsp: mcmd: %p func: 0x%02x response: 0x%02x\n",
 723                         mcmd, se_tmr->function, se_tmr->response);
 724         /*
 725          * Do translation between TCM TM response codes and
 726          * QLA2xxx FC TM response codes.
 727          */
 728         switch (se_tmr->response) {
 729         case TMR_FUNCTION_COMPLETE:
 730                 mcmd->fc_tm_rsp = FC_TM_SUCCESS;
 731                 break;
 732         case TMR_TASK_DOES_NOT_EXIST:
 733                 mcmd->fc_tm_rsp = FC_TM_BAD_CMD;
 734                 break;
 735         case TMR_FUNCTION_REJECTED:
 736                 mcmd->fc_tm_rsp = FC_TM_REJECT;
 737                 break;
 738         case TMR_LUN_DOES_NOT_EXIST:
 739         default:
 740                 mcmd->fc_tm_rsp = FC_TM_FAILED;
 741                 break;
 742         }
 743         /*
 744          * Queue the TM response to QLA2xxx LLD to build a
 745          * CTIO response packet.
 746          */
 747         qlt_xmit_tm_rsp(mcmd);
 748
 749         return 0;
 750 }
 751
 752 static u16 tcm_qla2xxx_get_fabric_sense_len(void)
 753 {
 754         return 0;
 755 }
 756
 757 static u16 tcm_qla2xxx_set_fabric_sense_len(struct se_cmd *se_cmd,
 758                                         u32 sense_length)
 759 {
 760         return 0;
 761 }
 762
 763 /* Local pointer to allocated TCM configfs fabric module */
 764 struct target_fabric_configfs *tcm_qla2xxx_fabric_configfs;
 765 struct target_fabric_configfs *tcm_qla2xxx_npiv_fabric_configfs;
 766
 767 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *,
 768                         struct tcm_qla2xxx_nacl *, struct qla_tgt_sess *);
 769 /*
 770  * Expected to be called with struct qla_hw_data->hardware_lock held
 771  */
 772 static void tcm_qla2xxx_clear_nacl_from_fcport_map(struct qla_tgt_sess *sess)
 773 {
 774         struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
 775         struct se_portal_group *se_tpg = se_nacl->se_tpg;
 776         struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
 777         struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
 778                                 struct tcm_qla2xxx_lport, lport_wwn);
 779         struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
 780                                 struct tcm_qla2xxx_nacl, se_node_acl);
 781         void *node;
 782
 783         pr_debug("fc_rport domain: port_id 0x%06x\n", nacl->nport_id);
 784
 785         node = btree_remove32(&lport->lport_fcport_map, nacl->nport_id);
 786         WARN_ON(node && (node != se_nacl));
 787
 788         pr_debug("Removed from fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%06x\n",
 789             se_nacl, nacl->nport_wwnn, nacl->nport_id);
 790         /*
 791          * Now clear the se_nacl and session pointers from our HW lport lookup
 792          * table mapping for this initiator's fabric S_ID and LOOP_ID entries.
 793          *
 794          * This is done ahead of callbacks into tcm_qla2xxx_free_session() ->
 795          * target_wait_for_sess_cmds() before the session waits for outstanding
 796          * I/O to complete, to avoid a race between session shutdown execution
 797          * and incoming ATIOs or TMRs picking up a stale se_node_act reference.
 798          */
 799         tcm_qla2xxx_clear_sess_lookup(lport, nacl, sess);
 800 }
 801
 802 static void tcm_qla2xxx_release_session(struct kref *kref)
 803 {
 804         struct se_session *se_sess = container_of(kref,
 805                         struct se_session, sess_kref);
 806
 807         qlt_unreg_sess(se_sess->fabric_sess_ptr);
 808 }
 809
 810 static void tcm_qla2xxx_put_session(struct se_session *se_sess)
 811 {
 812         struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
 813         struct qla_hw_data *ha = sess->vha->hw;
 814         unsigned long flags;
 815
 816         spin_lock_irqsave(&ha->hardware_lock, flags);
 817         kref_put(&se_sess->sess_kref, tcm_qla2xxx_release_session);
 818         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 819 }
 820
 821 static void tcm_qla2xxx_put_sess(struct qla_tgt_sess *sess)
 822 {
 823         tcm_qla2xxx_put_session(sess->se_sess);
 824 }
 825
 826 static void tcm_qla2xxx_shutdown_sess(struct qla_tgt_sess *sess)
 827 {
 828         tcm_qla2xxx_shutdown_session(sess->se_sess);
 829 }
 830
 831 static struct se_node_acl *tcm_qla2xxx_make_nodeacl(
 832         struct se_portal_group *se_tpg,
 833         struct config_group *group,
 834         const char *name)
 835 {
 836         struct se_node_acl *se_nacl, *se_nacl_new;
 837         struct tcm_qla2xxx_nacl *nacl;
 838         u64 wwnn;
 839         u32 qla2xxx_nexus_depth;
 840
 841         if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0)
 842                 return ERR_PTR(-EINVAL);
 843
 844         se_nacl_new = tcm_qla2xxx_alloc_fabric_acl(se_tpg);
 845         if (!se_nacl_new)
 846                 return ERR_PTR(-ENOMEM);
 847 /* #warning FIXME: Hardcoded qla2xxx_nexus depth in tcm_qla2xxx_make_nodeacl */
 848         qla2xxx_nexus_depth = 1;
 849
 850         /*
 851          * se_nacl_new may be released by core_tpg_add_initiator_node_acl()
 852          * when converting a NodeACL from demo mode -> explict
 853          */
 854         se_nacl = core_tpg_add_initiator_node_acl(se_tpg, se_nacl_new,
 855                                 name, qla2xxx_nexus_depth);
 856         if (IS_ERR(se_nacl)) {
 857                 tcm_qla2xxx_release_fabric_acl(se_tpg, se_nacl_new);
 858                 return se_nacl;
 859         }
 860         /*
 861          * Locate our struct tcm_qla2xxx_nacl and set the FC Nport WWPN
 862          */
 863         nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
 864         nacl->nport_wwnn = wwnn;
 865         tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn);
 866
 867         return se_nacl;
 868 }
 869
 870 static void tcm_qla2xxx_drop_nodeacl(struct se_node_acl *se_acl)
 871 {
 872         struct se_portal_group *se_tpg = se_acl->se_tpg;
 873         struct tcm_qla2xxx_nacl *nacl = container_of(se_acl,
 874                                 struct tcm_qla2xxx_nacl, se_node_acl);
 875
 876         core_tpg_del_initiator_node_acl(se_tpg, se_acl, 1);
 877         kfree(nacl);
 878 }
 879
 880 /* Start items for tcm_qla2xxx_tpg_attrib_cit */
 881
 882 #define DEF_QLA_TPG_ATTRIB(name)                                        \
 883                                                                         \
 884 static ssize_t tcm_qla2xxx_tpg_attrib_show_##name(                      \
 885         struct se_portal_group *se_tpg,                                 \
 886         char *page)                                                     \
 887 {                                                                       \
 888         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,              \
 889                         struct tcm_qla2xxx_tpg, se_tpg);                \
 890                                                                         \
 891         return sprintf(page, "%u\n", QLA_TPG_ATTRIB(tpg)->name);        \
 892 }                                                                       \
 893                                                                         \
 894 static ssize_t tcm_qla2xxx_tpg_attrib_store_##name(                     \
 895         struct se_portal_group *se_tpg,                                 \
 896         const char *page,                                               \
 897         size_t count)                                                   \
 898 {                                                                       \
 899         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,              \
 900                         struct tcm_qla2xxx_tpg, se_tpg);                \
 901         unsigned long val;                                              \
 902         int ret;                                                        \
 903                                                                         \
 904         ret = kstrtoul(page, 0, &val);                                  \
 905         if (ret < 0) {                                                  \
 906                 pr_err("kstrtoul() failed with"                         \
 907                                 " ret: %d\n", ret);                     \
 908                 return -EINVAL;                                         \
 909         }                                                               \
 910         ret = tcm_qla2xxx_set_attrib_##name(tpg, val);                  \
 911                                                                         \
 912         return (!ret) ? count : -EINVAL;                                \
 913 }
 914
 915 #define DEF_QLA_TPG_ATTR_BOOL(_name)                                    \
 916                                                                         \
 917 static int tcm_qla2xxx_set_attrib_##_name(                              \
 918         struct tcm_qla2xxx_tpg *tpg,                                    \
 919         unsigned long val)                                              \
 920 {                                                                       \
 921         struct tcm_qla2xxx_tpg_attrib *a = &tpg->tpg_attrib;            \
 922                                                                         \
 923         if ((val != 0) && (val != 1)) {                                 \
 924                 pr_err("Illegal boolean value %lu\n", val);             \
 925                 return -EINVAL;                                         \
 926         }                                                               \
 927                                                                         \
 928         a->_name = val;                                                 \
 929         return 0;                                                       \
 930 }
 931
 932 #define QLA_TPG_ATTR(_name, _mode) \
 933         TF_TPG_ATTRIB_ATTR(tcm_qla2xxx, _name, _mode);
 934
 935 /*
 936  * Define tcm_qla2xxx_tpg_attrib_s_generate_node_acls
 937  */
 938 DEF_QLA_TPG_ATTR_BOOL(generate_node_acls);
 939 DEF_QLA_TPG_ATTRIB(generate_node_acls);
 940 QLA_TPG_ATTR(generate_node_acls, S_IRUGO | S_IWUSR);
 941
 942 /*
 943  Define tcm_qla2xxx_attrib_s_cache_dynamic_acls
 944  */
 945 DEF_QLA_TPG_ATTR_BOOL(cache_dynamic_acls);
 946 DEF_QLA_TPG_ATTRIB(cache_dynamic_acls);
 947 QLA_TPG_ATTR(cache_dynamic_acls, S_IRUGO | S_IWUSR);
 948
 949 /*
 950  * Define tcm_qla2xxx_tpg_attrib_s_demo_mode_write_protect
 951  */
 952 DEF_QLA_TPG_ATTR_BOOL(demo_mode_write_protect);
 953 DEF_QLA_TPG_ATTRIB(demo_mode_write_protect);
 954 QLA_TPG_ATTR(demo_mode_write_protect, S_IRUGO | S_IWUSR);
 955
 956 /*
 957  * Define tcm_qla2xxx_tpg_attrib_s_prod_mode_write_protect
 958  */
 959 DEF_QLA_TPG_ATTR_BOOL(prod_mode_write_protect);
 960 DEF_QLA_TPG_ATTRIB(prod_mode_write_protect);
 961 QLA_TPG_ATTR(prod_mode_write_protect, S_IRUGO | S_IWUSR);
 962
 963 static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = {
 964         &tcm_qla2xxx_tpg_attrib_generate_node_acls.attr,
 965         &tcm_qla2xxx_tpg_attrib_cache_dynamic_acls.attr,
 966         &tcm_qla2xxx_tpg_attrib_demo_mode_write_protect.attr,
 967         &tcm_qla2xxx_tpg_attrib_prod_mode_write_protect.attr,
 968         NULL,
 969 };
 970
 971 /* End items for tcm_qla2xxx_tpg_attrib_cit */
 972
 973 static ssize_t tcm_qla2xxx_tpg_show_enable(
 974         struct se_portal_group *se_tpg,
 975         char *page)
 976 {
 977         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 978                         struct tcm_qla2xxx_tpg, se_tpg);
 979
 980         return snprintf(page, PAGE_SIZE, "%d\n",
 981                         atomic_read(&tpg->lport_tpg_enabled));
 982 }
 983
 984 static ssize_t tcm_qla2xxx_tpg_store_enable(
 985         struct se_portal_group *se_tpg,
 986         const char *page,
 987         size_t count)
 988 {
 989         struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
 990         struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
 991                         struct tcm_qla2xxx_lport, lport_wwn);
 992         struct scsi_qla_host *vha = lport->qla_vha;
 993         struct qla_hw_data *ha = vha->hw;
 994         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 995                         struct tcm_qla2xxx_tpg, se_tpg);
 996         unsigned long op;
 997         int rc;
 998
 999         rc = kstrtoul(page, 0, &op);
1000         if (rc < 0) {
1001                 pr_err("kstrtoul() returned %d\n", rc);
1002                 return -EINVAL;
1003         }
1004         if ((op != 1) && (op != 0)) {
1005                 pr_err("Illegal value for tpg_enable: %lu\n", op);
1006                 return -EINVAL;
1007         }
1008
1009         if (op) {
1010                 atomic_set(&tpg->lport_tpg_enabled, 1);
1011                 qlt_enable_vha(vha);
1012         } else {
1013                 if (!ha->tgt.qla_tgt) {
1014                         pr_err("truct qla_hw_data *ha->tgt.qla_tgt is NULL\n");
1015                         return -ENODEV;
1016                 }
1017                 atomic_set(&tpg->lport_tpg_enabled, 0);
1018                 qlt_stop_phase1(ha->tgt.qla_tgt);
1019         }
1020
1021         return count;
1022 }
1023
1024 TF_TPG_BASE_ATTR(tcm_qla2xxx, enable, S_IRUGO | S_IWUSR);
1025
1026 static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = {
1027         &tcm_qla2xxx_tpg_enable.attr,
1028         NULL,
1029 };
1030
1031 static struct se_portal_group *tcm_qla2xxx_make_tpg(
1032         struct se_wwn *wwn,
1033         struct config_group *group,
1034         const char *name)
1035 {
1036         struct tcm_qla2xxx_lport *lport = container_of(wwn,
1037                         struct tcm_qla2xxx_lport, lport_wwn);
1038         struct tcm_qla2xxx_tpg *tpg;
1039         unsigned long tpgt;
1040         int ret;
1041
1042         if (strstr(name, "tpgt_") != name)
1043                 return ERR_PTR(-EINVAL);
1044         if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
1045                 return ERR_PTR(-EINVAL);
1046
1047         if (!lport->qla_npiv_vp && (tpgt != 1)) {
1048                 pr_err("In non NPIV mode, a single TPG=1 is used for HW port mappings\n");
1049                 return ERR_PTR(-ENOSYS);
1050         }
1051
1052         tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
1053         if (!tpg) {
1054                 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1055                 return ERR_PTR(-ENOMEM);
1056         }
1057         tpg->lport = lport;
1058         tpg->lport_tpgt = tpgt;
1059         /*
1060          * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
1061          * NodeACLs
1062          */
1063         QLA_TPG_ATTRIB(tpg)->generate_node_acls = 1;
1064         QLA_TPG_ATTRIB(tpg)->demo_mode_write_protect = 1;
1065         QLA_TPG_ATTRIB(tpg)->cache_dynamic_acls = 1;
1066
1067         ret = core_tpg_register(&tcm_qla2xxx_fabric_configfs->tf_ops, wwn,
1068                                 &tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL);
1069         if (ret < 0) {
1070                 kfree(tpg);
1071                 return NULL;
1072         }
1073         /*
1074          * Setup local TPG=1 pointer for non NPIV mode.
1075          */
1076         if (lport->qla_npiv_vp == NULL)
1077                 lport->tpg_1 = tpg;
1078
1079         return &tpg->se_tpg;
1080 }
1081
1082 static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg)
1083 {
1084         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1085                         struct tcm_qla2xxx_tpg, se_tpg);
1086         struct tcm_qla2xxx_lport *lport = tpg->lport;
1087         struct scsi_qla_host *vha = lport->qla_vha;
1088         struct qla_hw_data *ha = vha->hw;
1089         /*
1090          * Call into qla2x_target.c LLD logic to shutdown the active
1091          * FC Nexuses and disable target mode operation for this qla_hw_data
1092          */
1093         if (ha->tgt.qla_tgt && !ha->tgt.qla_tgt->tgt_stop)
1094                 qlt_stop_phase1(ha->tgt.qla_tgt);
1095
1096         core_tpg_deregister(se_tpg);
1097         /*
1098          * Clear local TPG=1 pointer for non NPIV mode.
1099          */
1100         if (lport->qla_npiv_vp == NULL)
1101                 lport->tpg_1 = NULL;
1102
1103         kfree(tpg);
1104 }
1105
1106 static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg(
1107         struct se_wwn *wwn,
1108         struct config_group *group,
1109         const char *name)
1110 {
1111         struct tcm_qla2xxx_lport *lport = container_of(wwn,
1112                         struct tcm_qla2xxx_lport, lport_wwn);
1113         struct tcm_qla2xxx_tpg *tpg;
1114         unsigned long tpgt;
1115         int ret;
1116
1117         if (strstr(name, "tpgt_") != name)
1118                 return ERR_PTR(-EINVAL);
1119         if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
1120                 return ERR_PTR(-EINVAL);
1121
1122         tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
1123         if (!tpg) {
1124                 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1125                 return ERR_PTR(-ENOMEM);
1126         }
1127         tpg->lport = lport;
1128         tpg->lport_tpgt = tpgt;
1129
1130         ret = core_tpg_register(&tcm_qla2xxx_npiv_fabric_configfs->tf_ops, wwn,
1131                                 &tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL);
1132         if (ret < 0) {
1133                 kfree(tpg);
1134                 return NULL;
1135         }
1136         return &tpg->se_tpg;
1137 }
1138
1139 /*
1140  * Expected to be called with struct qla_hw_data->hardware_lock held
1141  */
1142 static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_s_id(
1143         scsi_qla_host_t *vha,
1144         const uint8_t *s_id)
1145 {
1146         struct qla_hw_data *ha = vha->hw;
1147         struct tcm_qla2xxx_lport *lport;
1148         struct se_node_acl *se_nacl;
1149         struct tcm_qla2xxx_nacl *nacl;
1150         u32 key;
1151
1152         lport = ha->tgt.target_lport_ptr;
1153         if (!lport) {
1154                 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1155                 dump_stack();
1156                 return NULL;
1157         }
1158
1159         key = (((unsigned long)s_id[0] << 16) |
1160                ((unsigned long)s_id[1] << 8) |
1161                (unsigned long)s_id[2]);
1162         pr_debug("find_sess_by_s_id: 0x%06x\n", key);
1163
1164         se_nacl = btree_lookup32(&lport->lport_fcport_map, key);
1165         if (!se_nacl) {
1166                 pr_debug("Unable to locate s_id: 0x%06x\n", key);
1167                 return NULL;
1168         }
1169         pr_debug("find_sess_by_s_id: located se_nacl: %p, initiatorname: %s\n",
1170             se_nacl, se_nacl->initiatorname);
1171
1172         nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1173         if (!nacl->qla_tgt_sess) {
1174                 pr_err("Unable to locate struct qla_tgt_sess\n");
1175                 return NULL;
1176         }
1177
1178         return nacl->qla_tgt_sess;
1179 }
1180
1181 /*
1182  * Expected to be called with struct qla_hw_data->hardware_lock held
1183  */
1184 static void tcm_qla2xxx_set_sess_by_s_id(
1185         struct tcm_qla2xxx_lport *lport,
1186         struct se_node_acl *new_se_nacl,
1187         struct tcm_qla2xxx_nacl *nacl,
1188         struct se_session *se_sess,
1189         struct qla_tgt_sess *qla_tgt_sess,
1190         uint8_t *s_id)
1191 {
1192         u32 key;
1193         void *slot;
1194         int rc;
1195
1196         key = (((unsigned long)s_id[0] << 16) |
1197                ((unsigned long)s_id[1] << 8) |
1198                (unsigned long)s_id[2]);
1199         pr_debug("set_sess_by_s_id: %06x\n", key);
1200
1201         slot = btree_lookup32(&lport->lport_fcport_map, key);
1202         if (!slot) {
1203                 if (new_se_nacl) {
1204                         pr_debug("Setting up new fc_port entry to new_se_nacl\n");
1205                         nacl->nport_id = key;
1206                         rc = btree_insert32(&lport->lport_fcport_map, key,
1207                                         new_se_nacl, GFP_ATOMIC);
1208                         if (rc)
1209                                 printk(KERN_ERR "Unable to insert s_id into fcport_map: %06x\n",
1210                                     (int)key);
1211                 } else {
1212                         pr_debug("Wiping nonexisting fc_port entry\n");
1213                 }
1214
1215                 qla_tgt_sess->se_sess = se_sess;
1216                 nacl->qla_tgt_sess = qla_tgt_sess;
1217                 return;
1218         }
1219
1220         if (nacl->qla_tgt_sess) {
1221                 if (new_se_nacl == NULL) {
1222                         pr_debug("Clearing existing nacl->qla_tgt_sess and fc_port entry\n");
1223                         btree_remove32(&lport->lport_fcport_map, key);
1224                         nacl->qla_tgt_sess = NULL;
1225                         return;
1226                 }
1227                 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_port entry\n");
1228                 btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1229                 qla_tgt_sess->se_sess = se_sess;
1230                 nacl->qla_tgt_sess = qla_tgt_sess;
1231                 return;
1232         }
1233
1234         if (new_se_nacl == NULL) {
1235                 pr_debug("Clearing existing fc_port entry\n");
1236                 btree_remove32(&lport->lport_fcport_map, key);
1237                 return;
1238         }
1239
1240         pr_debug("Replacing existing fc_port entry w/o active nacl->qla_tgt_sess\n");
1241         btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1242         qla_tgt_sess->se_sess = se_sess;
1243         nacl->qla_tgt_sess = qla_tgt_sess;
1244
1245         pr_debug("Setup nacl->qla_tgt_sess %p by s_id for se_nacl: %p, initiatorname: %s\n",
1246             nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname);
1247 }
1248
1249 /*
1250  * Expected to be called with struct qla_hw_data->hardware_lock held
1251  */
1252 static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_loop_id(
1253         scsi_qla_host_t *vha,
1254         const uint16_t loop_id)
1255 {
1256         struct qla_hw_data *ha = vha->hw;
1257         struct tcm_qla2xxx_lport *lport;
1258         struct se_node_acl *se_nacl;
1259         struct tcm_qla2xxx_nacl *nacl;
1260         struct tcm_qla2xxx_fc_loopid *fc_loopid;
1261
1262         lport = ha->tgt.target_lport_ptr;
1263         if (!lport) {
1264                 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1265                 dump_stack();
1266                 return NULL;
1267         }
1268
1269         pr_debug("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1270
1271         fc_loopid = lport->lport_loopid_map + loop_id;
1272         se_nacl = fc_loopid->se_nacl;
1273         if (!se_nacl) {
1274                 pr_debug("Unable to locate se_nacl by loop_id: 0x%04x\n",
1275                     loop_id);
1276                 return NULL;
1277         }
1278
1279         nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1280
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_loop_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         uint16_t loop_id)
1299 {
1300         struct se_node_acl *saved_nacl;
1301         struct tcm_qla2xxx_fc_loopid *fc_loopid;
1302
1303         pr_debug("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1304
1305         fc_loopid = &((struct tcm_qla2xxx_fc_loopid *)
1306                         lport->lport_loopid_map)[loop_id];
1307
1308         saved_nacl = fc_loopid->se_nacl;
1309         if (!saved_nacl) {
1310                 pr_debug("Setting up new fc_loopid->se_nacl to new_se_nacl\n");
1311                 fc_loopid->se_nacl = new_se_nacl;
1312                 if (qla_tgt_sess->se_sess != se_sess)
1313                         qla_tgt_sess->se_sess = se_sess;
1314                 if (nacl->qla_tgt_sess != qla_tgt_sess)
1315                         nacl->qla_tgt_sess = qla_tgt_sess;
1316                 return;
1317         }
1318
1319         if (nacl->qla_tgt_sess) {
1320                 if (new_se_nacl == NULL) {
1321                         pr_debug("Clearing nacl->qla_tgt_sess and fc_loopid->se_nacl\n");
1322                         fc_loopid->se_nacl = NULL;
1323                         nacl->qla_tgt_sess = NULL;
1324                         return;
1325                 }
1326
1327                 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_loopid->se_nacl\n");
1328                 fc_loopid->se_nacl = new_se_nacl;
1329                 if (qla_tgt_sess->se_sess != se_sess)
1330                         qla_tgt_sess->se_sess = se_sess;
1331                 if (nacl->qla_tgt_sess != qla_tgt_sess)
1332                         nacl->qla_tgt_sess = qla_tgt_sess;
1333                 return;
1334         }
1335
1336         if (new_se_nacl == NULL) {
1337                 pr_debug("Clearing fc_loopid->se_nacl\n");
1338                 fc_loopid->se_nacl = NULL;
1339                 return;
1340         }
1341
1342         pr_debug("Replacing existing fc_loopid->se_nacl w/o active nacl->qla_tgt_sess\n");
1343         fc_loopid->se_nacl = new_se_nacl;
1344         if (qla_tgt_sess->se_sess != se_sess)
1345                 qla_tgt_sess->se_sess = se_sess;
1346         if (nacl->qla_tgt_sess != qla_tgt_sess)
1347                 nacl->qla_tgt_sess = qla_tgt_sess;
1348
1349         pr_debug("Setup nacl->qla_tgt_sess %p by loop_id for se_nacl: %p, initiatorname: %s\n",
1350             nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname);
1351 }
1352
1353 /*
1354  * Should always be called with qla_hw_data->hardware_lock held.
1355  */
1356 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *lport,
1357                 struct tcm_qla2xxx_nacl *nacl, struct qla_tgt_sess *sess)
1358 {
1359         struct se_session *se_sess = sess->se_sess;
1360         unsigned char be_sid[3];
1361
1362         be_sid[0] = sess->s_id.b.domain;
1363         be_sid[1] = sess->s_id.b.area;
1364         be_sid[2] = sess->s_id.b.al_pa;
1365
1366         tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess,
1367                                 sess, be_sid);
1368         tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess,
1369                                 sess, sess->loop_id);
1370 }
1371
1372 static void tcm_qla2xxx_free_session(struct qla_tgt_sess *sess)
1373 {
1374         struct qla_tgt *tgt = sess->tgt;
1375         struct qla_hw_data *ha = tgt->ha;
1376         struct se_session *se_sess;
1377         struct se_node_acl *se_nacl;
1378         struct tcm_qla2xxx_lport *lport;
1379         struct tcm_qla2xxx_nacl *nacl;
1380
1381         BUG_ON(in_interrupt());
1382
1383         se_sess = sess->se_sess;
1384         if (!se_sess) {
1385                 pr_err("struct qla_tgt_sess->se_sess is NULL\n");
1386                 dump_stack();
1387                 return;
1388         }
1389         se_nacl = se_sess->se_node_acl;
1390         nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1391
1392         lport = ha->tgt.target_lport_ptr;
1393         if (!lport) {
1394                 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1395                 dump_stack();
1396                 return;
1397         }
1398         target_wait_for_sess_cmds(se_sess, 0);
1399
1400         transport_deregister_session_configfs(sess->se_sess);
1401         transport_deregister_session(sess->se_sess);
1402 }
1403
1404 /*
1405  * Called via qlt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl()
1406  * to locate struct se_node_acl
1407  */
1408 static int tcm_qla2xxx_check_initiator_node_acl(
1409         scsi_qla_host_t *vha,
1410         unsigned char *fc_wwpn,
1411         void *qla_tgt_sess,
1412         uint8_t *s_id,
1413         uint16_t loop_id)
1414 {
1415         struct qla_hw_data *ha = vha->hw;
1416         struct tcm_qla2xxx_lport *lport;
1417         struct tcm_qla2xxx_tpg *tpg;
1418         struct tcm_qla2xxx_nacl *nacl;
1419         struct se_portal_group *se_tpg;
1420         struct se_node_acl *se_nacl;
1421         struct se_session *se_sess;
1422         struct qla_tgt_sess *sess = qla_tgt_sess;
1423         unsigned char port_name[36];
1424         unsigned long flags;
1425
1426         lport = ha->tgt.target_lport_ptr;
1427         if (!lport) {
1428                 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1429                 dump_stack();
1430                 return -EINVAL;
1431         }
1432         /*
1433          * Locate the TPG=1 reference..
1434          */
1435         tpg = lport->tpg_1;
1436         if (!tpg) {
1437                 pr_err("Unable to lcoate struct tcm_qla2xxx_lport->tpg_1\n");
1438                 return -EINVAL;
1439         }
1440         se_tpg = &tpg->se_tpg;
1441
1442         se_sess = transport_init_session();
1443         if (IS_ERR(se_sess)) {
1444                 pr_err("Unable to initialize struct se_session\n");
1445                 return PTR_ERR(se_sess);
1446         }
1447         /*
1448          * Format the FCP Initiator port_name into colon seperated values to
1449          * match the format by tcm_qla2xxx explict ConfigFS NodeACLs.
1450          */
1451         memset(&port_name, 0, 36);
1452         snprintf(port_name, 36, "%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x",
1453                 fc_wwpn[0], fc_wwpn[1], fc_wwpn[2], fc_wwpn[3], fc_wwpn[4],
1454                 fc_wwpn[5], fc_wwpn[6], fc_wwpn[7]);
1455         /*
1456          * Locate our struct se_node_acl either from an explict NodeACL created
1457          * via ConfigFS, or via running in TPG demo mode.
1458          */
1459         se_sess->se_node_acl = core_tpg_check_initiator_node_acl(se_tpg,
1460                                         port_name);
1461         if (!se_sess->se_node_acl) {
1462                 transport_free_session(se_sess);
1463                 return -EINVAL;
1464         }
1465         se_nacl = se_sess->se_node_acl;
1466         nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1467         /*
1468          * And now setup the new se_nacl and session pointers into our HW lport
1469          * mappings for fabric S_ID and LOOP_ID.
1470          */
1471         spin_lock_irqsave(&ha->hardware_lock, flags);
1472         tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl, se_sess,
1473                         qla_tgt_sess, s_id);
1474         tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl, se_sess,
1475                         qla_tgt_sess, loop_id);
1476         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1477         /*
1478          * Finally register the new FC Nexus with TCM
1479          */
1480         __transport_register_session(se_nacl->se_tpg, se_nacl, se_sess, sess);
1481
1482         return 0;
1483 }
1484
1485 /*
1486  * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path.
1487  */
1488 static struct qla_tgt_func_tmpl tcm_qla2xxx_template = {
1489         .handle_cmd             = tcm_qla2xxx_handle_cmd,
1490         .handle_data            = tcm_qla2xxx_handle_data,
1491         .handle_tmr             = tcm_qla2xxx_handle_tmr,
1492         .free_cmd               = tcm_qla2xxx_free_cmd,
1493         .free_mcmd              = tcm_qla2xxx_free_mcmd,
1494         .free_session           = tcm_qla2xxx_free_session,
1495         .check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl,
1496         .find_sess_by_s_id      = tcm_qla2xxx_find_sess_by_s_id,
1497         .find_sess_by_loop_id   = tcm_qla2xxx_find_sess_by_loop_id,
1498         .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map,
1499         .put_sess               = tcm_qla2xxx_put_sess,
1500         .shutdown_sess          = tcm_qla2xxx_shutdown_sess,
1501 };
1502
1503 static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport)
1504 {
1505         int rc;
1506
1507         rc = btree_init32(&lport->lport_fcport_map);
1508         if (rc) {
1509                 pr_err("Unable to initialize lport->lport_fcport_map btree\n");
1510                 return rc;
1511         }
1512
1513         lport->lport_loopid_map = vmalloc(sizeof(struct tcm_qla2xxx_fc_loopid) *
1514                                 65536);
1515         if (!lport->lport_loopid_map) {
1516                 pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n",
1517                     sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1518                 btree_destroy32(&lport->lport_fcport_map);
1519                 return -ENOMEM;
1520         }
1521         memset(lport->lport_loopid_map, 0, sizeof(struct tcm_qla2xxx_fc_loopid)
1522                * 65536);
1523         pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n",
1524                sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1525         return 0;
1526 }
1527
1528 static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha)
1529 {
1530         struct qla_hw_data *ha = vha->hw;
1531         struct tcm_qla2xxx_lport *lport;
1532         /*
1533          * Setup local pointer to vha, NPIV VP pointer (if present) and
1534          * vha->tcm_lport pointer
1535          */
1536         lport = (struct tcm_qla2xxx_lport *)ha->tgt.target_lport_ptr;
1537         lport->qla_vha = vha;
1538
1539         return 0;
1540 }
1541
1542 static struct se_wwn *tcm_qla2xxx_make_lport(
1543         struct target_fabric_configfs *tf,
1544         struct config_group *group,
1545         const char *name)
1546 {
1547         struct tcm_qla2xxx_lport *lport;
1548         u64 wwpn;
1549         int ret = -ENODEV;
1550
1551         if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0)
1552                 return ERR_PTR(-EINVAL);
1553
1554         lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1555         if (!lport) {
1556                 pr_err("Unable to allocate struct tcm_qla2xxx_lport\n");
1557                 return ERR_PTR(-ENOMEM);
1558         }
1559         lport->lport_wwpn = wwpn;
1560         tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN,
1561                                 wwpn);
1562
1563         ret = tcm_qla2xxx_init_lport(lport);
1564         if (ret != 0)
1565                 goto out;
1566
1567         ret = qlt_lport_register(&tcm_qla2xxx_template, wwpn,
1568                                 tcm_qla2xxx_lport_register_cb, lport);
1569         if (ret != 0)
1570                 goto out_lport;
1571
1572         return &lport->lport_wwn;
1573 out_lport:
1574         vfree(lport->lport_loopid_map);
1575         btree_destroy32(&lport->lport_fcport_map);
1576 out:
1577         kfree(lport);
1578         return ERR_PTR(ret);
1579 }
1580
1581 static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn)
1582 {
1583         struct tcm_qla2xxx_lport *lport = container_of(wwn,
1584                         struct tcm_qla2xxx_lport, lport_wwn);
1585         struct scsi_qla_host *vha = lport->qla_vha;
1586         struct qla_hw_data *ha = vha->hw;
1587         struct se_node_acl *node;
1588         u32 key = 0;
1589
1590         /*
1591          * Call into qla2x_target.c LLD logic to complete the
1592          * shutdown of struct qla_tgt after the call to
1593          * qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above..
1594          */
1595         if (ha->tgt.qla_tgt && !ha->tgt.qla_tgt->tgt_stopped)
1596                 qlt_stop_phase2(ha->tgt.qla_tgt);
1597
1598         qlt_lport_deregister(vha);
1599
1600         vfree(lport->lport_loopid_map);
1601         btree_for_each_safe32(&lport->lport_fcport_map, key, node)
1602                 btree_remove32(&lport->lport_fcport_map, key);
1603         btree_destroy32(&lport->lport_fcport_map);
1604         kfree(lport);
1605 }
1606
1607 static struct se_wwn *tcm_qla2xxx_npiv_make_lport(
1608         struct target_fabric_configfs *tf,
1609         struct config_group *group,
1610         const char *name)
1611 {
1612         struct tcm_qla2xxx_lport *lport;
1613         u64 npiv_wwpn, npiv_wwnn;
1614         int ret;
1615
1616         if (tcm_qla2xxx_npiv_parse_wwn(name, strlen(name)+1,
1617                                 &npiv_wwpn, &npiv_wwnn) < 0)
1618                 return ERR_PTR(-EINVAL);
1619
1620         lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1621         if (!lport) {
1622                 pr_err("Unable to allocate struct tcm_qla2xxx_lport for NPIV\n");
1623                 return ERR_PTR(-ENOMEM);
1624         }
1625         lport->lport_npiv_wwpn = npiv_wwpn;
1626         lport->lport_npiv_wwnn = npiv_wwnn;
1627         tcm_qla2xxx_npiv_format_wwn(&lport->lport_npiv_name[0],
1628                         TCM_QLA2XXX_NAMELEN, npiv_wwpn, npiv_wwnn);
1629
1630 /* FIXME: tcm_qla2xxx_npiv_make_lport */
1631         ret = -ENOSYS;
1632         if (ret != 0)
1633                 goto out;
1634
1635         return &lport->lport_wwn;
1636 out:
1637         kfree(lport);
1638         return ERR_PTR(ret);
1639 }
1640
1641 static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn)
1642 {
1643         struct tcm_qla2xxx_lport *lport = container_of(wwn,
1644                         struct tcm_qla2xxx_lport, lport_wwn);
1645         struct scsi_qla_host *vha = lport->qla_vha;
1646         struct Scsi_Host *sh = vha->host;
1647         /*
1648          * Notify libfc that we want to release the lport->npiv_vport
1649          */
1650         fc_vport_terminate(lport->npiv_vport);
1651
1652         scsi_host_put(sh);
1653         kfree(lport);
1654 }
1655
1656
1657 static ssize_t tcm_qla2xxx_wwn_show_attr_version(
1658         struct target_fabric_configfs *tf,
1659         char *page)
1660 {
1661         return sprintf(page,
1662             "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s on "
1663             UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname,
1664             utsname()->machine);
1665 }
1666
1667 TF_WWN_ATTR_RO(tcm_qla2xxx, version);
1668
1669 static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = {
1670         &tcm_qla2xxx_wwn_version.attr,
1671         NULL,
1672 };
1673
1674 static struct target_core_fabric_ops tcm_qla2xxx_ops = {
1675         .get_fabric_name                = tcm_qla2xxx_get_fabric_name,
1676         .get_fabric_proto_ident         = tcm_qla2xxx_get_fabric_proto_ident,
1677         .tpg_get_wwn                    = tcm_qla2xxx_get_fabric_wwn,
1678         .tpg_get_tag                    = tcm_qla2xxx_get_tag,
1679         .tpg_get_default_depth          = tcm_qla2xxx_get_default_depth,
1680         .tpg_get_pr_transport_id        = tcm_qla2xxx_get_pr_transport_id,
1681         .tpg_get_pr_transport_id_len    = tcm_qla2xxx_get_pr_transport_id_len,
1682         .tpg_parse_pr_out_transport_id  = tcm_qla2xxx_parse_pr_out_transport_id,
1683         .tpg_check_demo_mode            = tcm_qla2xxx_check_demo_mode,
1684         .tpg_check_demo_mode_cache      = tcm_qla2xxx_check_demo_mode_cache,
1685         .tpg_check_demo_mode_write_protect =
1686                                         tcm_qla2xxx_check_demo_write_protect,
1687         .tpg_check_prod_mode_write_protect =
1688                                         tcm_qla2xxx_check_prod_write_protect,
1689         .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_true,
1690         .tpg_alloc_fabric_acl           = tcm_qla2xxx_alloc_fabric_acl,
1691         .tpg_release_fabric_acl         = tcm_qla2xxx_release_fabric_acl,
1692         .tpg_get_inst_index             = tcm_qla2xxx_tpg_get_inst_index,
1693         .new_cmd_map                    = NULL,
1694         .check_stop_free                = tcm_qla2xxx_check_stop_free,
1695         .release_cmd                    = tcm_qla2xxx_release_cmd,
1696         .put_session                    = tcm_qla2xxx_put_session,
1697         .shutdown_session               = tcm_qla2xxx_shutdown_session,
1698         .close_session                  = tcm_qla2xxx_close_session,
1699         .sess_get_index                 = tcm_qla2xxx_sess_get_index,
1700         .sess_get_initiator_sid         = NULL,
1701         .write_pending                  = tcm_qla2xxx_write_pending,
1702         .write_pending_status           = tcm_qla2xxx_write_pending_status,
1703         .set_default_node_attributes    = tcm_qla2xxx_set_default_node_attrs,
1704         .get_task_tag                   = tcm_qla2xxx_get_task_tag,
1705         .get_cmd_state                  = tcm_qla2xxx_get_cmd_state,
1706         .queue_data_in                  = tcm_qla2xxx_queue_data_in,
1707         .queue_status                   = tcm_qla2xxx_queue_status,
1708         .queue_tm_rsp                   = tcm_qla2xxx_queue_tm_rsp,
1709         .get_fabric_sense_len           = tcm_qla2xxx_get_fabric_sense_len,
1710         .set_fabric_sense_len           = tcm_qla2xxx_set_fabric_sense_len,
1711         /*
1712          * Setup function pointers for generic logic in
1713          * target_core_fabric_configfs.c
1714          */
1715         .fabric_make_wwn                = tcm_qla2xxx_make_lport,
1716         .fabric_drop_wwn                = tcm_qla2xxx_drop_lport,
1717         .fabric_make_tpg                = tcm_qla2xxx_make_tpg,
1718         .fabric_drop_tpg                = tcm_qla2xxx_drop_tpg,
1719         .fabric_post_link               = NULL,
1720         .fabric_pre_unlink              = NULL,
1721         .fabric_make_np                 = NULL,
1722         .fabric_drop_np                 = NULL,
1723         .fabric_make_nodeacl            = tcm_qla2xxx_make_nodeacl,
1724         .fabric_drop_nodeacl            = tcm_qla2xxx_drop_nodeacl,
1725 };
1726
1727 static struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = {
1728         .get_fabric_name                = tcm_qla2xxx_npiv_get_fabric_name,
1729         .get_fabric_proto_ident         = tcm_qla2xxx_get_fabric_proto_ident,
1730         .tpg_get_wwn                    = tcm_qla2xxx_npiv_get_fabric_wwn,
1731         .tpg_get_tag                    = tcm_qla2xxx_get_tag,
1732         .tpg_get_default_depth          = tcm_qla2xxx_get_default_depth,
1733         .tpg_get_pr_transport_id        = tcm_qla2xxx_get_pr_transport_id,
1734         .tpg_get_pr_transport_id_len    = tcm_qla2xxx_get_pr_transport_id_len,
1735         .tpg_parse_pr_out_transport_id  = tcm_qla2xxx_parse_pr_out_transport_id,
1736         .tpg_check_demo_mode            = tcm_qla2xxx_check_false,
1737         .tpg_check_demo_mode_cache      = tcm_qla2xxx_check_true,
1738         .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_true,
1739         .tpg_check_prod_mode_write_protect = tcm_qla2xxx_check_false,
1740         .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_true,
1741         .tpg_alloc_fabric_acl           = tcm_qla2xxx_alloc_fabric_acl,
1742         .tpg_release_fabric_acl         = tcm_qla2xxx_release_fabric_acl,
1743         .tpg_get_inst_index             = tcm_qla2xxx_tpg_get_inst_index,
1744         .release_cmd                    = tcm_qla2xxx_release_cmd,
1745         .put_session                    = tcm_qla2xxx_put_session,
1746         .shutdown_session               = tcm_qla2xxx_shutdown_session,
1747         .close_session                  = tcm_qla2xxx_close_session,
1748         .sess_get_index                 = tcm_qla2xxx_sess_get_index,
1749         .sess_get_initiator_sid         = NULL,
1750         .write_pending                  = tcm_qla2xxx_write_pending,
1751         .write_pending_status           = tcm_qla2xxx_write_pending_status,
1752         .set_default_node_attributes    = tcm_qla2xxx_set_default_node_attrs,
1753         .get_task_tag                   = tcm_qla2xxx_get_task_tag,
1754         .get_cmd_state                  = tcm_qla2xxx_get_cmd_state,
1755         .queue_data_in                  = tcm_qla2xxx_queue_data_in,
1756         .queue_status                   = tcm_qla2xxx_queue_status,
1757         .queue_tm_rsp                   = tcm_qla2xxx_queue_tm_rsp,
1758         .get_fabric_sense_len           = tcm_qla2xxx_get_fabric_sense_len,
1759         .set_fabric_sense_len           = tcm_qla2xxx_set_fabric_sense_len,
1760         /*
1761          * Setup function pointers for generic logic in
1762          * target_core_fabric_configfs.c
1763          */
1764         .fabric_make_wwn                = tcm_qla2xxx_npiv_make_lport,
1765         .fabric_drop_wwn                = tcm_qla2xxx_npiv_drop_lport,
1766         .fabric_make_tpg                = tcm_qla2xxx_npiv_make_tpg,
1767         .fabric_drop_tpg                = tcm_qla2xxx_drop_tpg,
1768         .fabric_post_link               = NULL,
1769         .fabric_pre_unlink              = NULL,
1770         .fabric_make_np                 = NULL,
1771         .fabric_drop_np                 = NULL,
1772         .fabric_make_nodeacl            = tcm_qla2xxx_make_nodeacl,
1773         .fabric_drop_nodeacl            = tcm_qla2xxx_drop_nodeacl,
1774 };
1775
1776 static int tcm_qla2xxx_register_configfs(void)
1777 {
1778         struct target_fabric_configfs *fabric, *npiv_fabric;
1779         int ret;
1780
1781         pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on "
1782             UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname,
1783             utsname()->machine);
1784         /*
1785          * Register the top level struct config_item_type with TCM core
1786          */
1787         fabric = target_fabric_configfs_init(THIS_MODULE, "qla2xxx");
1788         if (IS_ERR(fabric)) {
1789                 pr_err("target_fabric_configfs_init() failed\n");
1790                 return PTR_ERR(fabric);
1791         }
1792         /*
1793          * Setup fabric->tf_ops from our local tcm_qla2xxx_ops
1794          */
1795         fabric->tf_ops = tcm_qla2xxx_ops;
1796         /*
1797          * Setup default attribute lists for various fabric->tf_cit_tmpl
1798          */
1799         TF_CIT_TMPL(fabric)->tfc_wwn_cit.ct_attrs = tcm_qla2xxx_wwn_attrs;
1800         TF_CIT_TMPL(fabric)->tfc_tpg_base_cit.ct_attrs = tcm_qla2xxx_tpg_attrs;
1801         TF_CIT_TMPL(fabric)->tfc_tpg_attrib_cit.ct_attrs =
1802                                                 tcm_qla2xxx_tpg_attrib_attrs;
1803         TF_CIT_TMPL(fabric)->tfc_tpg_param_cit.ct_attrs = NULL;
1804         TF_CIT_TMPL(fabric)->tfc_tpg_np_base_cit.ct_attrs = NULL;
1805         TF_CIT_TMPL(fabric)->tfc_tpg_nacl_base_cit.ct_attrs = NULL;
1806         TF_CIT_TMPL(fabric)->tfc_tpg_nacl_attrib_cit.ct_attrs = NULL;
1807         TF_CIT_TMPL(fabric)->tfc_tpg_nacl_auth_cit.ct_attrs = NULL;
1808         TF_CIT_TMPL(fabric)->tfc_tpg_nacl_param_cit.ct_attrs = NULL;
1809         /*
1810          * Register the fabric for use within TCM
1811          */
1812         ret = target_fabric_configfs_register(fabric);
1813         if (ret < 0) {
1814                 pr_err("target_fabric_configfs_register() failed for TCM_QLA2XXX\n");
1815                 return ret;
1816         }
1817         /*
1818          * Setup our local pointer to *fabric
1819          */
1820         tcm_qla2xxx_fabric_configfs = fabric;
1821         pr_debug("TCM_QLA2XXX[0] - Set fabric -> tcm_qla2xxx_fabric_configfs\n");
1822
1823         /*
1824          * Register the top level struct config_item_type for NPIV with TCM core
1825          */
1826         npiv_fabric = target_fabric_configfs_init(THIS_MODULE, "qla2xxx_npiv");
1827         if (IS_ERR(npiv_fabric)) {
1828                 pr_err("target_fabric_configfs_init() failed\n");
1829                 ret = PTR_ERR(npiv_fabric);
1830                 goto out_fabric;
1831         }
1832         /*
1833          * Setup fabric->tf_ops from our local tcm_qla2xxx_npiv_ops
1834          */
1835         npiv_fabric->tf_ops = tcm_qla2xxx_npiv_ops;
1836         /*
1837          * Setup default attribute lists for various npiv_fabric->tf_cit_tmpl
1838          */
1839         TF_CIT_TMPL(npiv_fabric)->tfc_wwn_cit.ct_attrs = tcm_qla2xxx_wwn_attrs;
1840         TF_CIT_TMPL(npiv_fabric)->tfc_tpg_base_cit.ct_attrs = NULL;
1841         TF_CIT_TMPL(npiv_fabric)->tfc_tpg_attrib_cit.ct_attrs = NULL;
1842         TF_CIT_TMPL(npiv_fabric)->tfc_tpg_param_cit.ct_attrs = NULL;
1843         TF_CIT_TMPL(npiv_fabric)->tfc_tpg_np_base_cit.ct_attrs = NULL;
1844         TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_base_cit.ct_attrs = NULL;
1845         TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_attrib_cit.ct_attrs = NULL;
1846         TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_auth_cit.ct_attrs = NULL;
1847         TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_param_cit.ct_attrs = NULL;
1848         /*
1849          * Register the npiv_fabric for use within TCM
1850          */
1851         ret = target_fabric_configfs_register(npiv_fabric);
1852         if (ret < 0) {
1853                 pr_err("target_fabric_configfs_register() failed for TCM_QLA2XXX\n");
1854                 goto out_fabric;
1855         }
1856         /*
1857          * Setup our local pointer to *npiv_fabric
1858          */
1859         tcm_qla2xxx_npiv_fabric_configfs = npiv_fabric;
1860         pr_debug("TCM_QLA2XXX[0] - Set fabric -> tcm_qla2xxx_npiv_fabric_configfs\n");
1861
1862         tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free",
1863                                                 WQ_MEM_RECLAIM, 0);
1864         if (!tcm_qla2xxx_free_wq) {
1865                 ret = -ENOMEM;
1866                 goto out_fabric_npiv;
1867         }
1868
1869         tcm_qla2xxx_cmd_wq = alloc_workqueue("tcm_qla2xxx_cmd", 0, 0);
1870         if (!tcm_qla2xxx_cmd_wq) {
1871                 ret = -ENOMEM;
1872                 goto out_free_wq;
1873         }
1874
1875         return 0;
1876
1877 out_free_wq:
1878         destroy_workqueue(tcm_qla2xxx_free_wq);
1879 out_fabric_npiv:
1880         target_fabric_configfs_deregister(tcm_qla2xxx_npiv_fabric_configfs);
1881 out_fabric:
1882         target_fabric_configfs_deregister(tcm_qla2xxx_fabric_configfs);
1883         return ret;
1884 }
1885
1886 static void tcm_qla2xxx_deregister_configfs(void)
1887 {
1888         destroy_workqueue(tcm_qla2xxx_cmd_wq);
1889         destroy_workqueue(tcm_qla2xxx_free_wq);
1890
1891         target_fabric_configfs_deregister(tcm_qla2xxx_fabric_configfs);
1892         tcm_qla2xxx_fabric_configfs = NULL;
1893         pr_debug("TCM_QLA2XXX[0] - Cleared tcm_qla2xxx_fabric_configfs\n");
1894
1895         target_fabric_configfs_deregister(tcm_qla2xxx_npiv_fabric_configfs);
1896         tcm_qla2xxx_npiv_fabric_configfs = NULL;
1897         pr_debug("TCM_QLA2XXX[0] - Cleared tcm_qla2xxx_npiv_fabric_configfs\n");
1898 }
1899
1900 static int __init tcm_qla2xxx_init(void)
1901 {
1902         int ret;
1903
1904         ret = tcm_qla2xxx_register_configfs();
1905         if (ret < 0)
1906                 return ret;
1907
1908         return 0;
1909 }
1910
1911 static void __exit tcm_qla2xxx_exit(void)
1912 {
1913         tcm_qla2xxx_deregister_configfs();
1914 }
1915
1916 MODULE_DESCRIPTION("TCM QLA2XXX series NPIV enabled fabric driver");
1917 MODULE_LICENSE("GPL");
1918 module_init(tcm_qla2xxx_init);
1919 module_exit(tcm_qla2xxx_exit);