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_naa_name;
 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 allocate 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                 transport_generic_request_failure(&cmd->se_cmd,
 624                                                   TCM_CHECK_CONDITION_ABORT_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                 if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
 692                         se_cmd->se_cmd_flags &= ~SCF_OVERFLOW_BIT;
 693                         se_cmd->residual_count = 0;
 694                 }
 695                 se_cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT;
 696                 se_cmd->residual_count += se_cmd->data_length;
 697
 698                 cmd->bufflen = 0;
 699         }
 700         /*
 701          * Now queue status response to qla2xxx LLD code and response ring
 702          */
 703         return qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status);
 704 }
 705
 706 static void tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd)
 707 {
 708         struct se_tmr_req *se_tmr = se_cmd->se_tmr_req;
 709         struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
 710                                 struct qla_tgt_mgmt_cmd, se_cmd);
 711
 712         pr_debug("queue_tm_rsp: mcmd: %p func: 0x%02x response: 0x%02x\n",
 713                         mcmd, se_tmr->function, se_tmr->response);
 714         /*
 715          * Do translation between TCM TM response codes and
 716          * QLA2xxx FC TM response codes.
 717          */
 718         switch (se_tmr->response) {
 719         case TMR_FUNCTION_COMPLETE:
 720                 mcmd->fc_tm_rsp = FC_TM_SUCCESS;
 721                 break;
 722         case TMR_TASK_DOES_NOT_EXIST:
 723                 mcmd->fc_tm_rsp = FC_TM_BAD_CMD;
 724                 break;
 725         case TMR_FUNCTION_REJECTED:
 726                 mcmd->fc_tm_rsp = FC_TM_REJECT;
 727                 break;
 728         case TMR_LUN_DOES_NOT_EXIST:
 729         default:
 730                 mcmd->fc_tm_rsp = FC_TM_FAILED;
 731                 break;
 732         }
 733         /*
 734          * Queue the TM response to QLA2xxx LLD to build a
 735          * CTIO response packet.
 736          */
 737         qlt_xmit_tm_rsp(mcmd);
 738 }
 739
 740 /* Local pointer to allocated TCM configfs fabric module */
 741 struct target_fabric_configfs *tcm_qla2xxx_fabric_configfs;
 742 struct target_fabric_configfs *tcm_qla2xxx_npiv_fabric_configfs;
 743
 744 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *,
 745                         struct tcm_qla2xxx_nacl *, struct qla_tgt_sess *);
 746 /*
 747  * Expected to be called with struct qla_hw_data->hardware_lock held
 748  */
 749 static void tcm_qla2xxx_clear_nacl_from_fcport_map(struct qla_tgt_sess *sess)
 750 {
 751         struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
 752         struct se_portal_group *se_tpg = se_nacl->se_tpg;
 753         struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
 754         struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
 755                                 struct tcm_qla2xxx_lport, lport_wwn);
 756         struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
 757                                 struct tcm_qla2xxx_nacl, se_node_acl);
 758         void *node;
 759
 760         pr_debug("fc_rport domain: port_id 0x%06x\n", nacl->nport_id);
 761
 762         node = btree_remove32(&lport->lport_fcport_map, nacl->nport_id);
 763         WARN_ON(node && (node != se_nacl));
 764
 765         pr_debug("Removed from fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%06x\n",
 766             se_nacl, nacl->nport_wwnn, nacl->nport_id);
 767         /*
 768          * Now clear the se_nacl and session pointers from our HW lport lookup
 769          * table mapping for this initiator's fabric S_ID and LOOP_ID entries.
 770          *
 771          * This is done ahead of callbacks into tcm_qla2xxx_free_session() ->
 772          * target_wait_for_sess_cmds() before the session waits for outstanding
 773          * I/O to complete, to avoid a race between session shutdown execution
 774          * and incoming ATIOs or TMRs picking up a stale se_node_act reference.
 775          */
 776         tcm_qla2xxx_clear_sess_lookup(lport, nacl, sess);
 777 }
 778
 779 static void tcm_qla2xxx_release_session(struct kref *kref)
 780 {
 781         struct se_session *se_sess = container_of(kref,
 782                         struct se_session, sess_kref);
 783
 784         qlt_unreg_sess(se_sess->fabric_sess_ptr);
 785 }
 786
 787 static void tcm_qla2xxx_put_session(struct se_session *se_sess)
 788 {
 789         struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
 790         struct qla_hw_data *ha = sess->vha->hw;
 791         unsigned long flags;
 792
 793         spin_lock_irqsave(&ha->hardware_lock, flags);
 794         kref_put(&se_sess->sess_kref, tcm_qla2xxx_release_session);
 795         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 796 }
 797
 798 static void tcm_qla2xxx_put_sess(struct qla_tgt_sess *sess)
 799 {
 800         assert_spin_locked(&sess->vha->hw->hardware_lock);
 801         kref_put(&sess->se_sess->sess_kref, tcm_qla2xxx_release_session);
 802 }
 803
 804 static void tcm_qla2xxx_shutdown_sess(struct qla_tgt_sess *sess)
 805 {
 806         assert_spin_locked(&sess->vha->hw->hardware_lock);
 807         target_sess_cmd_list_set_waiting(sess->se_sess);
 808 }
 809
 810 static struct se_node_acl *tcm_qla2xxx_make_nodeacl(
 811         struct se_portal_group *se_tpg,
 812         struct config_group *group,
 813         const char *name)
 814 {
 815         struct se_node_acl *se_nacl, *se_nacl_new;
 816         struct tcm_qla2xxx_nacl *nacl;
 817         u64 wwnn;
 818         u32 qla2xxx_nexus_depth;
 819
 820         if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0)
 821                 return ERR_PTR(-EINVAL);
 822
 823         se_nacl_new = tcm_qla2xxx_alloc_fabric_acl(se_tpg);
 824         if (!se_nacl_new)
 825                 return ERR_PTR(-ENOMEM);
 826 /* #warning FIXME: Hardcoded qla2xxx_nexus depth in tcm_qla2xxx_make_nodeacl */
 827         qla2xxx_nexus_depth = 1;
 828
 829         /*
 830          * se_nacl_new may be released by core_tpg_add_initiator_node_acl()
 831          * when converting a NodeACL from demo mode -> explict
 832          */
 833         se_nacl = core_tpg_add_initiator_node_acl(se_tpg, se_nacl_new,
 834                                 name, qla2xxx_nexus_depth);
 835         if (IS_ERR(se_nacl)) {
 836                 tcm_qla2xxx_release_fabric_acl(se_tpg, se_nacl_new);
 837                 return se_nacl;
 838         }
 839         /*
 840          * Locate our struct tcm_qla2xxx_nacl and set the FC Nport WWPN
 841          */
 842         nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
 843         nacl->nport_wwnn = wwnn;
 844         tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn);
 845
 846         return se_nacl;
 847 }
 848
 849 static void tcm_qla2xxx_drop_nodeacl(struct se_node_acl *se_acl)
 850 {
 851         struct se_portal_group *se_tpg = se_acl->se_tpg;
 852         struct tcm_qla2xxx_nacl *nacl = container_of(se_acl,
 853                                 struct tcm_qla2xxx_nacl, se_node_acl);
 854
 855         core_tpg_del_initiator_node_acl(se_tpg, se_acl, 1);
 856         kfree(nacl);
 857 }
 858
 859 /* Start items for tcm_qla2xxx_tpg_attrib_cit */
 860
 861 #define DEF_QLA_TPG_ATTRIB(name)                                        \
 862                                                                         \
 863 static ssize_t tcm_qla2xxx_tpg_attrib_show_##name(                      \
 864         struct se_portal_group *se_tpg,                                 \
 865         char *page)                                                     \
 866 {                                                                       \
 867         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,              \
 868                         struct tcm_qla2xxx_tpg, se_tpg);                \
 869                                                                         \
 870         return sprintf(page, "%u\n", QLA_TPG_ATTRIB(tpg)->name);        \
 871 }                                                                       \
 872                                                                         \
 873 static ssize_t tcm_qla2xxx_tpg_attrib_store_##name(                     \
 874         struct se_portal_group *se_tpg,                                 \
 875         const char *page,                                               \
 876         size_t count)                                                   \
 877 {                                                                       \
 878         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,              \
 879                         struct tcm_qla2xxx_tpg, se_tpg);                \
 880         unsigned long val;                                              \
 881         int ret;                                                        \
 882                                                                         \
 883         ret = kstrtoul(page, 0, &val);                                  \
 884         if (ret < 0) {                                                  \
 885                 pr_err("kstrtoul() failed with"                         \
 886                                 " ret: %d\n", ret);                     \
 887                 return -EINVAL;                                         \
 888         }                                                               \
 889         ret = tcm_qla2xxx_set_attrib_##name(tpg, val);                  \
 890                                                                         \
 891         return (!ret) ? count : -EINVAL;                                \
 892 }
 893
 894 #define DEF_QLA_TPG_ATTR_BOOL(_name)                                    \
 895                                                                         \
 896 static int tcm_qla2xxx_set_attrib_##_name(                              \
 897         struct tcm_qla2xxx_tpg *tpg,                                    \
 898         unsigned long val)                                              \
 899 {                                                                       \
 900         struct tcm_qla2xxx_tpg_attrib *a = &tpg->tpg_attrib;            \
 901                                                                         \
 902         if ((val != 0) && (val != 1)) {                                 \
 903                 pr_err("Illegal boolean value %lu\n", val);             \
 904                 return -EINVAL;                                         \
 905         }                                                               \
 906                                                                         \
 907         a->_name = val;                                                 \
 908         return 0;                                                       \
 909 }
 910
 911 #define QLA_TPG_ATTR(_name, _mode) \
 912         TF_TPG_ATTRIB_ATTR(tcm_qla2xxx, _name, _mode);
 913
 914 /*
 915  * Define tcm_qla2xxx_tpg_attrib_s_generate_node_acls
 916  */
 917 DEF_QLA_TPG_ATTR_BOOL(generate_node_acls);
 918 DEF_QLA_TPG_ATTRIB(generate_node_acls);
 919 QLA_TPG_ATTR(generate_node_acls, S_IRUGO | S_IWUSR);
 920
 921 /*
 922  Define tcm_qla2xxx_attrib_s_cache_dynamic_acls
 923  */
 924 DEF_QLA_TPG_ATTR_BOOL(cache_dynamic_acls);
 925 DEF_QLA_TPG_ATTRIB(cache_dynamic_acls);
 926 QLA_TPG_ATTR(cache_dynamic_acls, S_IRUGO | S_IWUSR);
 927
 928 /*
 929  * Define tcm_qla2xxx_tpg_attrib_s_demo_mode_write_protect
 930  */
 931 DEF_QLA_TPG_ATTR_BOOL(demo_mode_write_protect);
 932 DEF_QLA_TPG_ATTRIB(demo_mode_write_protect);
 933 QLA_TPG_ATTR(demo_mode_write_protect, S_IRUGO | S_IWUSR);
 934
 935 /*
 936  * Define tcm_qla2xxx_tpg_attrib_s_prod_mode_write_protect
 937  */
 938 DEF_QLA_TPG_ATTR_BOOL(prod_mode_write_protect);
 939 DEF_QLA_TPG_ATTRIB(prod_mode_write_protect);
 940 QLA_TPG_ATTR(prod_mode_write_protect, S_IRUGO | S_IWUSR);
 941
 942 static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = {
 943         &tcm_qla2xxx_tpg_attrib_generate_node_acls.attr,
 944         &tcm_qla2xxx_tpg_attrib_cache_dynamic_acls.attr,
 945         &tcm_qla2xxx_tpg_attrib_demo_mode_write_protect.attr,
 946         &tcm_qla2xxx_tpg_attrib_prod_mode_write_protect.attr,
 947         NULL,
 948 };
 949
 950 /* End items for tcm_qla2xxx_tpg_attrib_cit */
 951
 952 static ssize_t tcm_qla2xxx_tpg_show_enable(
 953         struct se_portal_group *se_tpg,
 954         char *page)
 955 {
 956         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 957                         struct tcm_qla2xxx_tpg, se_tpg);
 958
 959         return snprintf(page, PAGE_SIZE, "%d\n",
 960                         atomic_read(&tpg->lport_tpg_enabled));
 961 }
 962
 963 static ssize_t tcm_qla2xxx_tpg_store_enable(
 964         struct se_portal_group *se_tpg,
 965         const char *page,
 966         size_t count)
 967 {
 968         struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
 969         struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
 970                         struct tcm_qla2xxx_lport, lport_wwn);
 971         struct scsi_qla_host *vha = lport->qla_vha;
 972         struct qla_hw_data *ha = vha->hw;
 973         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 974                         struct tcm_qla2xxx_tpg, se_tpg);
 975         unsigned long op;
 976         int rc;
 977
 978         rc = kstrtoul(page, 0, &op);
 979         if (rc < 0) {
 980                 pr_err("kstrtoul() returned %d\n", rc);
 981                 return -EINVAL;
 982         }
 983         if ((op != 1) && (op != 0)) {
 984                 pr_err("Illegal value for tpg_enable: %lu\n", op);
 985                 return -EINVAL;
 986         }
 987
 988         if (op) {
 989                 atomic_set(&tpg->lport_tpg_enabled, 1);
 990                 qlt_enable_vha(vha);
 991         } else {
 992                 if (!ha->tgt.qla_tgt) {
 993                         pr_err("truct qla_hw_data *ha->tgt.qla_tgt is NULL\n");
 994                         return -ENODEV;
 995                 }
 996                 atomic_set(&tpg->lport_tpg_enabled, 0);
 997                 qlt_stop_phase1(ha->tgt.qla_tgt);
 998         }
 999
1000         return count;
1001 }
1002
1003 TF_TPG_BASE_ATTR(tcm_qla2xxx, enable, S_IRUGO | S_IWUSR);
1004
1005 static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = {
1006         &tcm_qla2xxx_tpg_enable.attr,
1007         NULL,
1008 };
1009
1010 static struct se_portal_group *tcm_qla2xxx_make_tpg(
1011         struct se_wwn *wwn,
1012         struct config_group *group,
1013         const char *name)
1014 {
1015         struct tcm_qla2xxx_lport *lport = container_of(wwn,
1016                         struct tcm_qla2xxx_lport, lport_wwn);
1017         struct tcm_qla2xxx_tpg *tpg;
1018         unsigned long tpgt;
1019         int ret;
1020
1021         if (strstr(name, "tpgt_") != name)
1022                 return ERR_PTR(-EINVAL);
1023         if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
1024                 return ERR_PTR(-EINVAL);
1025
1026         if (!lport->qla_npiv_vp && (tpgt != 1)) {
1027                 pr_err("In non NPIV mode, a single TPG=1 is used for HW port mappings\n");
1028                 return ERR_PTR(-ENOSYS);
1029         }
1030
1031         tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
1032         if (!tpg) {
1033                 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1034                 return ERR_PTR(-ENOMEM);
1035         }
1036         tpg->lport = lport;
1037         tpg->lport_tpgt = tpgt;
1038         /*
1039          * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
1040          * NodeACLs
1041          */
1042         QLA_TPG_ATTRIB(tpg)->generate_node_acls = 1;
1043         QLA_TPG_ATTRIB(tpg)->demo_mode_write_protect = 1;
1044         QLA_TPG_ATTRIB(tpg)->cache_dynamic_acls = 1;
1045
1046         ret = core_tpg_register(&tcm_qla2xxx_fabric_configfs->tf_ops, wwn,
1047                                 &tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL);
1048         if (ret < 0) {
1049                 kfree(tpg);
1050                 return NULL;
1051         }
1052         /*
1053          * Setup local TPG=1 pointer for non NPIV mode.
1054          */
1055         if (lport->qla_npiv_vp == NULL)
1056                 lport->tpg_1 = tpg;
1057
1058         return &tpg->se_tpg;
1059 }
1060
1061 static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg)
1062 {
1063         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1064                         struct tcm_qla2xxx_tpg, se_tpg);
1065         struct tcm_qla2xxx_lport *lport = tpg->lport;
1066         struct scsi_qla_host *vha = lport->qla_vha;
1067         struct qla_hw_data *ha = vha->hw;
1068         /*
1069          * Call into qla2x_target.c LLD logic to shutdown the active
1070          * FC Nexuses and disable target mode operation for this qla_hw_data
1071          */
1072         if (ha->tgt.qla_tgt && !ha->tgt.qla_tgt->tgt_stop)
1073                 qlt_stop_phase1(ha->tgt.qla_tgt);
1074
1075         core_tpg_deregister(se_tpg);
1076         /*
1077          * Clear local TPG=1 pointer for non NPIV mode.
1078          */
1079         if (lport->qla_npiv_vp == NULL)
1080                 lport->tpg_1 = NULL;
1081
1082         kfree(tpg);
1083 }
1084
1085 static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg(
1086         struct se_wwn *wwn,
1087         struct config_group *group,
1088         const char *name)
1089 {
1090         struct tcm_qla2xxx_lport *lport = container_of(wwn,
1091                         struct tcm_qla2xxx_lport, lport_wwn);
1092         struct tcm_qla2xxx_tpg *tpg;
1093         unsigned long tpgt;
1094         int ret;
1095
1096         if (strstr(name, "tpgt_") != name)
1097                 return ERR_PTR(-EINVAL);
1098         if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
1099                 return ERR_PTR(-EINVAL);
1100
1101         tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
1102         if (!tpg) {
1103                 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1104                 return ERR_PTR(-ENOMEM);
1105         }
1106         tpg->lport = lport;
1107         tpg->lport_tpgt = tpgt;
1108
1109         ret = core_tpg_register(&tcm_qla2xxx_npiv_fabric_configfs->tf_ops, wwn,
1110                                 &tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL);
1111         if (ret < 0) {
1112                 kfree(tpg);
1113                 return NULL;
1114         }
1115         return &tpg->se_tpg;
1116 }
1117
1118 /*
1119  * Expected to be called with struct qla_hw_data->hardware_lock held
1120  */
1121 static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_s_id(
1122         scsi_qla_host_t *vha,
1123         const uint8_t *s_id)
1124 {
1125         struct qla_hw_data *ha = vha->hw;
1126         struct tcm_qla2xxx_lport *lport;
1127         struct se_node_acl *se_nacl;
1128         struct tcm_qla2xxx_nacl *nacl;
1129         u32 key;
1130
1131         lport = ha->tgt.target_lport_ptr;
1132         if (!lport) {
1133                 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1134                 dump_stack();
1135                 return NULL;
1136         }
1137
1138         key = (((unsigned long)s_id[0] << 16) |
1139                ((unsigned long)s_id[1] << 8) |
1140                (unsigned long)s_id[2]);
1141         pr_debug("find_sess_by_s_id: 0x%06x\n", key);
1142
1143         se_nacl = btree_lookup32(&lport->lport_fcport_map, key);
1144         if (!se_nacl) {
1145                 pr_debug("Unable to locate s_id: 0x%06x\n", key);
1146                 return NULL;
1147         }
1148         pr_debug("find_sess_by_s_id: located se_nacl: %p, initiatorname: %s\n",
1149             se_nacl, se_nacl->initiatorname);
1150
1151         nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1152         if (!nacl->qla_tgt_sess) {
1153                 pr_err("Unable to locate struct qla_tgt_sess\n");
1154                 return NULL;
1155         }
1156
1157         return nacl->qla_tgt_sess;
1158 }
1159
1160 /*
1161  * Expected to be called with struct qla_hw_data->hardware_lock held
1162  */
1163 static void tcm_qla2xxx_set_sess_by_s_id(
1164         struct tcm_qla2xxx_lport *lport,
1165         struct se_node_acl *new_se_nacl,
1166         struct tcm_qla2xxx_nacl *nacl,
1167         struct se_session *se_sess,
1168         struct qla_tgt_sess *qla_tgt_sess,
1169         uint8_t *s_id)
1170 {
1171         u32 key;
1172         void *slot;
1173         int rc;
1174
1175         key = (((unsigned long)s_id[0] << 16) |
1176                ((unsigned long)s_id[1] << 8) |
1177                (unsigned long)s_id[2]);
1178         pr_debug("set_sess_by_s_id: %06x\n", key);
1179
1180         slot = btree_lookup32(&lport->lport_fcport_map, key);
1181         if (!slot) {
1182                 if (new_se_nacl) {
1183                         pr_debug("Setting up new fc_port entry to new_se_nacl\n");
1184                         nacl->nport_id = key;
1185                         rc = btree_insert32(&lport->lport_fcport_map, key,
1186                                         new_se_nacl, GFP_ATOMIC);
1187                         if (rc)
1188                                 printk(KERN_ERR "Unable to insert s_id into fcport_map: %06x\n",
1189                                     (int)key);
1190                 } else {
1191                         pr_debug("Wiping nonexisting fc_port entry\n");
1192                 }
1193
1194                 qla_tgt_sess->se_sess = se_sess;
1195                 nacl->qla_tgt_sess = qla_tgt_sess;
1196                 return;
1197         }
1198
1199         if (nacl->qla_tgt_sess) {
1200                 if (new_se_nacl == NULL) {
1201                         pr_debug("Clearing existing nacl->qla_tgt_sess and fc_port entry\n");
1202                         btree_remove32(&lport->lport_fcport_map, key);
1203                         nacl->qla_tgt_sess = NULL;
1204                         return;
1205                 }
1206                 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_port entry\n");
1207                 btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1208                 qla_tgt_sess->se_sess = se_sess;
1209                 nacl->qla_tgt_sess = qla_tgt_sess;
1210                 return;
1211         }
1212
1213         if (new_se_nacl == NULL) {
1214                 pr_debug("Clearing existing fc_port entry\n");
1215                 btree_remove32(&lport->lport_fcport_map, key);
1216                 return;
1217         }
1218
1219         pr_debug("Replacing existing fc_port entry w/o active nacl->qla_tgt_sess\n");
1220         btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1221         qla_tgt_sess->se_sess = se_sess;
1222         nacl->qla_tgt_sess = qla_tgt_sess;
1223
1224         pr_debug("Setup nacl->qla_tgt_sess %p by s_id for se_nacl: %p, initiatorname: %s\n",
1225             nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname);
1226 }
1227
1228 /*
1229  * Expected to be called with struct qla_hw_data->hardware_lock held
1230  */
1231 static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_loop_id(
1232         scsi_qla_host_t *vha,
1233         const uint16_t loop_id)
1234 {
1235         struct qla_hw_data *ha = vha->hw;
1236         struct tcm_qla2xxx_lport *lport;
1237         struct se_node_acl *se_nacl;
1238         struct tcm_qla2xxx_nacl *nacl;
1239         struct tcm_qla2xxx_fc_loopid *fc_loopid;
1240
1241         lport = ha->tgt.target_lport_ptr;
1242         if (!lport) {
1243                 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1244                 dump_stack();
1245                 return NULL;
1246         }
1247
1248         pr_debug("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1249
1250         fc_loopid = lport->lport_loopid_map + loop_id;
1251         se_nacl = fc_loopid->se_nacl;
1252         if (!se_nacl) {
1253                 pr_debug("Unable to locate se_nacl by loop_id: 0x%04x\n",
1254                     loop_id);
1255                 return NULL;
1256         }
1257
1258         nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1259
1260         if (!nacl->qla_tgt_sess) {
1261                 pr_err("Unable to locate struct qla_tgt_sess\n");
1262                 return NULL;
1263         }
1264
1265         return nacl->qla_tgt_sess;
1266 }
1267
1268 /*
1269  * Expected to be called with struct qla_hw_data->hardware_lock held
1270  */
1271 static void tcm_qla2xxx_set_sess_by_loop_id(
1272         struct tcm_qla2xxx_lport *lport,
1273         struct se_node_acl *new_se_nacl,
1274         struct tcm_qla2xxx_nacl *nacl,
1275         struct se_session *se_sess,
1276         struct qla_tgt_sess *qla_tgt_sess,
1277         uint16_t loop_id)
1278 {
1279         struct se_node_acl *saved_nacl;
1280         struct tcm_qla2xxx_fc_loopid *fc_loopid;
1281
1282         pr_debug("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1283
1284         fc_loopid = &((struct tcm_qla2xxx_fc_loopid *)
1285                         lport->lport_loopid_map)[loop_id];
1286
1287         saved_nacl = fc_loopid->se_nacl;
1288         if (!saved_nacl) {
1289                 pr_debug("Setting up new fc_loopid->se_nacl to new_se_nacl\n");
1290                 fc_loopid->se_nacl = new_se_nacl;
1291                 if (qla_tgt_sess->se_sess != se_sess)
1292                         qla_tgt_sess->se_sess = se_sess;
1293                 if (nacl->qla_tgt_sess != qla_tgt_sess)
1294                         nacl->qla_tgt_sess = qla_tgt_sess;
1295                 return;
1296         }
1297
1298         if (nacl->qla_tgt_sess) {
1299                 if (new_se_nacl == NULL) {
1300                         pr_debug("Clearing nacl->qla_tgt_sess and fc_loopid->se_nacl\n");
1301                         fc_loopid->se_nacl = NULL;
1302                         nacl->qla_tgt_sess = NULL;
1303                         return;
1304                 }
1305
1306                 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_loopid->se_nacl\n");
1307                 fc_loopid->se_nacl = new_se_nacl;
1308                 if (qla_tgt_sess->se_sess != se_sess)
1309                         qla_tgt_sess->se_sess = se_sess;
1310                 if (nacl->qla_tgt_sess != qla_tgt_sess)
1311                         nacl->qla_tgt_sess = qla_tgt_sess;
1312                 return;
1313         }
1314
1315         if (new_se_nacl == NULL) {
1316                 pr_debug("Clearing fc_loopid->se_nacl\n");
1317                 fc_loopid->se_nacl = NULL;
1318                 return;
1319         }
1320
1321         pr_debug("Replacing existing fc_loopid->se_nacl w/o active nacl->qla_tgt_sess\n");
1322         fc_loopid->se_nacl = new_se_nacl;
1323         if (qla_tgt_sess->se_sess != se_sess)
1324                 qla_tgt_sess->se_sess = se_sess;
1325         if (nacl->qla_tgt_sess != qla_tgt_sess)
1326                 nacl->qla_tgt_sess = qla_tgt_sess;
1327
1328         pr_debug("Setup nacl->qla_tgt_sess %p by loop_id for se_nacl: %p, initiatorname: %s\n",
1329             nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname);
1330 }
1331
1332 /*
1333  * Should always be called with qla_hw_data->hardware_lock held.
1334  */
1335 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *lport,
1336                 struct tcm_qla2xxx_nacl *nacl, struct qla_tgt_sess *sess)
1337 {
1338         struct se_session *se_sess = sess->se_sess;
1339         unsigned char be_sid[3];
1340
1341         be_sid[0] = sess->s_id.b.domain;
1342         be_sid[1] = sess->s_id.b.area;
1343         be_sid[2] = sess->s_id.b.al_pa;
1344
1345         tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess,
1346                                 sess, be_sid);
1347         tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess,
1348                                 sess, sess->loop_id);
1349 }
1350
1351 static void tcm_qla2xxx_free_session(struct qla_tgt_sess *sess)
1352 {
1353         struct qla_tgt *tgt = sess->tgt;
1354         struct qla_hw_data *ha = tgt->ha;
1355         struct se_session *se_sess;
1356         struct se_node_acl *se_nacl;
1357         struct tcm_qla2xxx_lport *lport;
1358         struct tcm_qla2xxx_nacl *nacl;
1359
1360         BUG_ON(in_interrupt());
1361
1362         se_sess = sess->se_sess;
1363         if (!se_sess) {
1364                 pr_err("struct qla_tgt_sess->se_sess is NULL\n");
1365                 dump_stack();
1366                 return;
1367         }
1368         se_nacl = se_sess->se_node_acl;
1369         nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1370
1371         lport = ha->tgt.target_lport_ptr;
1372         if (!lport) {
1373                 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1374                 dump_stack();
1375                 return;
1376         }
1377         target_wait_for_sess_cmds(se_sess);
1378
1379         transport_deregister_session_configfs(sess->se_sess);
1380         transport_deregister_session(sess->se_sess);
1381 }
1382
1383 /*
1384  * Called via qlt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl()
1385  * to locate struct se_node_acl
1386  */
1387 static int tcm_qla2xxx_check_initiator_node_acl(
1388         scsi_qla_host_t *vha,
1389         unsigned char *fc_wwpn,
1390         void *qla_tgt_sess,
1391         uint8_t *s_id,
1392         uint16_t loop_id)
1393 {
1394         struct qla_hw_data *ha = vha->hw;
1395         struct tcm_qla2xxx_lport *lport;
1396         struct tcm_qla2xxx_tpg *tpg;
1397         struct tcm_qla2xxx_nacl *nacl;
1398         struct se_portal_group *se_tpg;
1399         struct se_node_acl *se_nacl;
1400         struct se_session *se_sess;
1401         struct qla_tgt_sess *sess = qla_tgt_sess;
1402         unsigned char port_name[36];
1403         unsigned long flags;
1404
1405         lport = ha->tgt.target_lport_ptr;
1406         if (!lport) {
1407                 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1408                 dump_stack();
1409                 return -EINVAL;
1410         }
1411         /*
1412          * Locate the TPG=1 reference..
1413          */
1414         tpg = lport->tpg_1;
1415         if (!tpg) {
1416                 pr_err("Unable to lcoate struct tcm_qla2xxx_lport->tpg_1\n");
1417                 return -EINVAL;
1418         }
1419         se_tpg = &tpg->se_tpg;
1420
1421         se_sess = transport_init_session();
1422         if (IS_ERR(se_sess)) {
1423                 pr_err("Unable to initialize struct se_session\n");
1424                 return PTR_ERR(se_sess);
1425         }
1426         /*
1427          * Format the FCP Initiator port_name into colon seperated values to
1428          * match the format by tcm_qla2xxx explict ConfigFS NodeACLs.
1429          */
1430         memset(&port_name, 0, 36);
1431         snprintf(port_name, 36, "%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x",
1432                 fc_wwpn[0], fc_wwpn[1], fc_wwpn[2], fc_wwpn[3], fc_wwpn[4],
1433                 fc_wwpn[5], fc_wwpn[6], fc_wwpn[7]);
1434         /*
1435          * Locate our struct se_node_acl either from an explict NodeACL created
1436          * via ConfigFS, or via running in TPG demo mode.
1437          */
1438         se_sess->se_node_acl = core_tpg_check_initiator_node_acl(se_tpg,
1439                                         port_name);
1440         if (!se_sess->se_node_acl) {
1441                 transport_free_session(se_sess);
1442                 return -EINVAL;
1443         }
1444         se_nacl = se_sess->se_node_acl;
1445         nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1446         /*
1447          * And now setup the new se_nacl and session pointers into our HW lport
1448          * mappings for fabric S_ID and LOOP_ID.
1449          */
1450         spin_lock_irqsave(&ha->hardware_lock, flags);
1451         tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl, se_sess,
1452                         qla_tgt_sess, s_id);
1453         tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl, se_sess,
1454                         qla_tgt_sess, loop_id);
1455         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1456         /*
1457          * Finally register the new FC Nexus with TCM
1458          */
1459         __transport_register_session(se_nacl->se_tpg, se_nacl, se_sess, sess);
1460
1461         return 0;
1462 }
1463
1464 static void tcm_qla2xxx_update_sess(struct qla_tgt_sess *sess, port_id_t s_id,
1465                                     uint16_t loop_id, bool conf_compl_supported)
1466 {
1467         struct qla_tgt *tgt = sess->tgt;
1468         struct qla_hw_data *ha = tgt->ha;
1469         struct tcm_qla2xxx_lport *lport = ha->tgt.target_lport_ptr;
1470         struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
1471         struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
1472                         struct tcm_qla2xxx_nacl, se_node_acl);
1473         u32 key;
1474
1475
1476         if (sess->loop_id != loop_id || sess->s_id.b24 != s_id.b24)
1477                 pr_info("Updating session %p from port %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x loop_id %d -> %d s_id %x:%x:%x -> %x:%x:%x\n",
1478                         sess,
1479                         sess->port_name[0], sess->port_name[1],
1480                         sess->port_name[2], sess->port_name[3],
1481                         sess->port_name[4], sess->port_name[5],
1482                         sess->port_name[6], sess->port_name[7],
1483                         sess->loop_id, loop_id,
1484                         sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa,
1485                         s_id.b.domain, s_id.b.area, s_id.b.al_pa);
1486
1487         if (sess->loop_id != loop_id) {
1488                 /*
1489                  * Because we can shuffle loop IDs around and we
1490                  * update different sessions non-atomically, we might
1491                  * have overwritten this session's old loop ID
1492                  * already, and we might end up overwriting some other
1493                  * session that will be updated later.  So we have to
1494                  * be extra careful and we can't warn about those things...
1495                  */
1496                 if (lport->lport_loopid_map[sess->loop_id].se_nacl == se_nacl)
1497                         lport->lport_loopid_map[sess->loop_id].se_nacl = NULL;
1498
1499                 lport->lport_loopid_map[loop_id].se_nacl = se_nacl;
1500
1501                 sess->loop_id = loop_id;
1502         }
1503
1504         if (sess->s_id.b24 != s_id.b24) {
1505                 key = (((u32) sess->s_id.b.domain << 16) |
1506                        ((u32) sess->s_id.b.area   <<  8) |
1507                        ((u32) sess->s_id.b.al_pa));
1508
1509                 if (btree_lookup32(&lport->lport_fcport_map, key))
1510                         WARN(btree_remove32(&lport->lport_fcport_map, key) != se_nacl,
1511                              "Found wrong se_nacl when updating s_id %x:%x:%x\n",
1512                              sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa);
1513                 else
1514                         WARN(1, "No lport_fcport_map entry for s_id %x:%x:%x\n",
1515                              sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa);
1516
1517                 key = (((u32) s_id.b.domain << 16) |
1518                        ((u32) s_id.b.area   <<  8) |
1519                        ((u32) s_id.b.al_pa));
1520
1521                 if (btree_lookup32(&lport->lport_fcport_map, key)) {
1522                         WARN(1, "Already have lport_fcport_map entry for s_id %x:%x:%x\n",
1523                              s_id.b.domain, s_id.b.area, s_id.b.al_pa);
1524                         btree_update32(&lport->lport_fcport_map, key, se_nacl);
1525                 } else {
1526                         btree_insert32(&lport->lport_fcport_map, key, se_nacl, GFP_ATOMIC);
1527                 }
1528
1529                 sess->s_id = s_id;
1530                 nacl->nport_id = key;
1531         }
1532
1533         sess->conf_compl_supported = conf_compl_supported;
1534 }
1535
1536 /*
1537  * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path.
1538  */
1539 static struct qla_tgt_func_tmpl tcm_qla2xxx_template = {
1540         .handle_cmd             = tcm_qla2xxx_handle_cmd,
1541         .handle_data            = tcm_qla2xxx_handle_data,
1542         .handle_tmr             = tcm_qla2xxx_handle_tmr,
1543         .free_cmd               = tcm_qla2xxx_free_cmd,
1544         .free_mcmd              = tcm_qla2xxx_free_mcmd,
1545         .free_session           = tcm_qla2xxx_free_session,
1546         .update_sess            = tcm_qla2xxx_update_sess,
1547         .check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl,
1548         .find_sess_by_s_id      = tcm_qla2xxx_find_sess_by_s_id,
1549         .find_sess_by_loop_id   = tcm_qla2xxx_find_sess_by_loop_id,
1550         .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map,
1551         .put_sess               = tcm_qla2xxx_put_sess,
1552         .shutdown_sess          = tcm_qla2xxx_shutdown_sess,
1553 };
1554
1555 static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport)
1556 {
1557         int rc;
1558
1559         rc = btree_init32(&lport->lport_fcport_map);
1560         if (rc) {
1561                 pr_err("Unable to initialize lport->lport_fcport_map btree\n");
1562                 return rc;
1563         }
1564
1565         lport->lport_loopid_map = vmalloc(sizeof(struct tcm_qla2xxx_fc_loopid) *
1566                                 65536);
1567         if (!lport->lport_loopid_map) {
1568                 pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n",
1569                     sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1570                 btree_destroy32(&lport->lport_fcport_map);
1571                 return -ENOMEM;
1572         }
1573         memset(lport->lport_loopid_map, 0, sizeof(struct tcm_qla2xxx_fc_loopid)
1574                * 65536);
1575         pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n",
1576                sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1577         return 0;
1578 }
1579
1580 static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha)
1581 {
1582         struct qla_hw_data *ha = vha->hw;
1583         struct tcm_qla2xxx_lport *lport;
1584         /*
1585          * Setup local pointer to vha, NPIV VP pointer (if present) and
1586          * vha->tcm_lport pointer
1587          */
1588         lport = (struct tcm_qla2xxx_lport *)ha->tgt.target_lport_ptr;
1589         lport->qla_vha = vha;
1590
1591         return 0;
1592 }
1593
1594 static struct se_wwn *tcm_qla2xxx_make_lport(
1595         struct target_fabric_configfs *tf,
1596         struct config_group *group,
1597         const char *name)
1598 {
1599         struct tcm_qla2xxx_lport *lport;
1600         u64 wwpn;
1601         int ret = -ENODEV;
1602
1603         if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 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\n");
1609                 return ERR_PTR(-ENOMEM);
1610         }
1611         lport->lport_wwpn = wwpn;
1612         tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN,
1613                                 wwpn);
1614         sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) wwpn);
1615
1616         ret = tcm_qla2xxx_init_lport(lport);
1617         if (ret != 0)
1618                 goto out;
1619
1620         ret = qlt_lport_register(&tcm_qla2xxx_template, wwpn,
1621                                 tcm_qla2xxx_lport_register_cb, lport);
1622         if (ret != 0)
1623                 goto out_lport;
1624
1625         return &lport->lport_wwn;
1626 out_lport:
1627         vfree(lport->lport_loopid_map);
1628         btree_destroy32(&lport->lport_fcport_map);
1629 out:
1630         kfree(lport);
1631         return ERR_PTR(ret);
1632 }
1633
1634 static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn)
1635 {
1636         struct tcm_qla2xxx_lport *lport = container_of(wwn,
1637                         struct tcm_qla2xxx_lport, lport_wwn);
1638         struct scsi_qla_host *vha = lport->qla_vha;
1639         struct qla_hw_data *ha = vha->hw;
1640         struct se_node_acl *node;
1641         u32 key = 0;
1642
1643         /*
1644          * Call into qla2x_target.c LLD logic to complete the
1645          * shutdown of struct qla_tgt after the call to
1646          * qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above..
1647          */
1648         if (ha->tgt.qla_tgt && !ha->tgt.qla_tgt->tgt_stopped)
1649                 qlt_stop_phase2(ha->tgt.qla_tgt);
1650
1651         qlt_lport_deregister(vha);
1652
1653         vfree(lport->lport_loopid_map);
1654         btree_for_each_safe32(&lport->lport_fcport_map, key, node)
1655                 btree_remove32(&lport->lport_fcport_map, key);
1656         btree_destroy32(&lport->lport_fcport_map);
1657         kfree(lport);
1658 }
1659
1660 static struct se_wwn *tcm_qla2xxx_npiv_make_lport(
1661         struct target_fabric_configfs *tf,
1662         struct config_group *group,
1663         const char *name)
1664 {
1665         struct tcm_qla2xxx_lport *lport;
1666         u64 npiv_wwpn, npiv_wwnn;
1667         int ret;
1668
1669         if (tcm_qla2xxx_npiv_parse_wwn(name, strlen(name)+1,
1670                                 &npiv_wwpn, &npiv_wwnn) < 0)
1671                 return ERR_PTR(-EINVAL);
1672
1673         lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1674         if (!lport) {
1675                 pr_err("Unable to allocate struct tcm_qla2xxx_lport for NPIV\n");
1676                 return ERR_PTR(-ENOMEM);
1677         }
1678         lport->lport_npiv_wwpn = npiv_wwpn;
1679         lport->lport_npiv_wwnn = npiv_wwnn;
1680         tcm_qla2xxx_npiv_format_wwn(&lport->lport_npiv_name[0],
1681                         TCM_QLA2XXX_NAMELEN, npiv_wwpn, npiv_wwnn);
1682         sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) npiv_wwpn);
1683
1684 /* FIXME: tcm_qla2xxx_npiv_make_lport */
1685         ret = -ENOSYS;
1686         if (ret != 0)
1687                 goto out;
1688
1689         return &lport->lport_wwn;
1690 out:
1691         kfree(lport);
1692         return ERR_PTR(ret);
1693 }
1694
1695 static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn)
1696 {
1697         struct tcm_qla2xxx_lport *lport = container_of(wwn,
1698                         struct tcm_qla2xxx_lport, lport_wwn);
1699         struct scsi_qla_host *vha = lport->qla_vha;
1700         struct Scsi_Host *sh = vha->host;
1701         /*
1702          * Notify libfc that we want to release the lport->npiv_vport
1703          */
1704         fc_vport_terminate(lport->npiv_vport);
1705
1706         scsi_host_put(sh);
1707         kfree(lport);
1708 }
1709
1710
1711 static ssize_t tcm_qla2xxx_wwn_show_attr_version(
1712         struct target_fabric_configfs *tf,
1713         char *page)
1714 {
1715         return sprintf(page,
1716             "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s on "
1717             UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname,
1718             utsname()->machine);
1719 }
1720
1721 TF_WWN_ATTR_RO(tcm_qla2xxx, version);
1722
1723 static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = {
1724         &tcm_qla2xxx_wwn_version.attr,
1725         NULL,
1726 };
1727
1728 static struct target_core_fabric_ops tcm_qla2xxx_ops = {
1729         .get_fabric_name                = tcm_qla2xxx_get_fabric_name,
1730         .get_fabric_proto_ident         = tcm_qla2xxx_get_fabric_proto_ident,
1731         .tpg_get_wwn                    = tcm_qla2xxx_get_fabric_wwn,
1732         .tpg_get_tag                    = tcm_qla2xxx_get_tag,
1733         .tpg_get_default_depth          = tcm_qla2xxx_get_default_depth,
1734         .tpg_get_pr_transport_id        = tcm_qla2xxx_get_pr_transport_id,
1735         .tpg_get_pr_transport_id_len    = tcm_qla2xxx_get_pr_transport_id_len,
1736         .tpg_parse_pr_out_transport_id  = tcm_qla2xxx_parse_pr_out_transport_id,
1737         .tpg_check_demo_mode            = tcm_qla2xxx_check_demo_mode,
1738         .tpg_check_demo_mode_cache      = tcm_qla2xxx_check_demo_mode_cache,
1739         .tpg_check_demo_mode_write_protect =
1740                                         tcm_qla2xxx_check_demo_write_protect,
1741         .tpg_check_prod_mode_write_protect =
1742                                         tcm_qla2xxx_check_prod_write_protect,
1743         .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_true,
1744         .tpg_alloc_fabric_acl           = tcm_qla2xxx_alloc_fabric_acl,
1745         .tpg_release_fabric_acl         = tcm_qla2xxx_release_fabric_acl,
1746         .tpg_get_inst_index             = tcm_qla2xxx_tpg_get_inst_index,
1747         .check_stop_free                = tcm_qla2xxx_check_stop_free,
1748         .release_cmd                    = tcm_qla2xxx_release_cmd,
1749         .put_session                    = tcm_qla2xxx_put_session,
1750         .shutdown_session               = tcm_qla2xxx_shutdown_session,
1751         .close_session                  = tcm_qla2xxx_close_session,
1752         .sess_get_index                 = tcm_qla2xxx_sess_get_index,
1753         .sess_get_initiator_sid         = NULL,
1754         .write_pending                  = tcm_qla2xxx_write_pending,
1755         .write_pending_status           = tcm_qla2xxx_write_pending_status,
1756         .set_default_node_attributes    = tcm_qla2xxx_set_default_node_attrs,
1757         .get_task_tag                   = tcm_qla2xxx_get_task_tag,
1758         .get_cmd_state                  = tcm_qla2xxx_get_cmd_state,
1759         .queue_data_in                  = tcm_qla2xxx_queue_data_in,
1760         .queue_status                   = tcm_qla2xxx_queue_status,
1761         .queue_tm_rsp                   = tcm_qla2xxx_queue_tm_rsp,
1762         /*
1763          * Setup function pointers for generic logic in
1764          * target_core_fabric_configfs.c
1765          */
1766         .fabric_make_wwn                = tcm_qla2xxx_make_lport,
1767         .fabric_drop_wwn                = tcm_qla2xxx_drop_lport,
1768         .fabric_make_tpg                = tcm_qla2xxx_make_tpg,
1769         .fabric_drop_tpg                = tcm_qla2xxx_drop_tpg,
1770         .fabric_post_link               = NULL,
1771         .fabric_pre_unlink              = NULL,
1772         .fabric_make_np                 = NULL,
1773         .fabric_drop_np                 = NULL,
1774         .fabric_make_nodeacl            = tcm_qla2xxx_make_nodeacl,
1775         .fabric_drop_nodeacl            = tcm_qla2xxx_drop_nodeacl,
1776 };
1777
1778 static struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = {
1779         .get_fabric_name                = tcm_qla2xxx_npiv_get_fabric_name,
1780         .get_fabric_proto_ident         = tcm_qla2xxx_get_fabric_proto_ident,
1781         .tpg_get_wwn                    = tcm_qla2xxx_npiv_get_fabric_wwn,
1782         .tpg_get_tag                    = tcm_qla2xxx_get_tag,
1783         .tpg_get_default_depth          = tcm_qla2xxx_get_default_depth,
1784         .tpg_get_pr_transport_id        = tcm_qla2xxx_get_pr_transport_id,
1785         .tpg_get_pr_transport_id_len    = tcm_qla2xxx_get_pr_transport_id_len,
1786         .tpg_parse_pr_out_transport_id  = tcm_qla2xxx_parse_pr_out_transport_id,
1787         .tpg_check_demo_mode            = tcm_qla2xxx_check_false,
1788         .tpg_check_demo_mode_cache      = tcm_qla2xxx_check_true,
1789         .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_true,
1790         .tpg_check_prod_mode_write_protect = tcm_qla2xxx_check_false,
1791         .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_true,
1792         .tpg_alloc_fabric_acl           = tcm_qla2xxx_alloc_fabric_acl,
1793         .tpg_release_fabric_acl         = tcm_qla2xxx_release_fabric_acl,
1794         .tpg_get_inst_index             = tcm_qla2xxx_tpg_get_inst_index,
1795         .release_cmd                    = tcm_qla2xxx_release_cmd,
1796         .put_session                    = tcm_qla2xxx_put_session,
1797         .shutdown_session               = tcm_qla2xxx_shutdown_session,
1798         .close_session                  = tcm_qla2xxx_close_session,
1799         .sess_get_index                 = tcm_qla2xxx_sess_get_index,
1800         .sess_get_initiator_sid         = NULL,
1801         .write_pending                  = tcm_qla2xxx_write_pending,
1802         .write_pending_status           = tcm_qla2xxx_write_pending_status,
1803         .set_default_node_attributes    = tcm_qla2xxx_set_default_node_attrs,
1804         .get_task_tag                   = tcm_qla2xxx_get_task_tag,
1805         .get_cmd_state                  = tcm_qla2xxx_get_cmd_state,
1806         .queue_data_in                  = tcm_qla2xxx_queue_data_in,
1807         .queue_status                   = tcm_qla2xxx_queue_status,
1808         .queue_tm_rsp                   = tcm_qla2xxx_queue_tm_rsp,
1809         /*
1810          * Setup function pointers for generic logic in
1811          * target_core_fabric_configfs.c
1812          */
1813         .fabric_make_wwn                = tcm_qla2xxx_npiv_make_lport,
1814         .fabric_drop_wwn                = tcm_qla2xxx_npiv_drop_lport,
1815         .fabric_make_tpg                = tcm_qla2xxx_npiv_make_tpg,
1816         .fabric_drop_tpg                = tcm_qla2xxx_drop_tpg,
1817         .fabric_post_link               = NULL,
1818         .fabric_pre_unlink              = NULL,
1819         .fabric_make_np                 = NULL,
1820         .fabric_drop_np                 = NULL,
1821         .fabric_make_nodeacl            = tcm_qla2xxx_make_nodeacl,
1822         .fabric_drop_nodeacl            = tcm_qla2xxx_drop_nodeacl,
1823 };
1824
1825 static int tcm_qla2xxx_register_configfs(void)
1826 {
1827         struct target_fabric_configfs *fabric, *npiv_fabric;
1828         int ret;
1829
1830         pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on "
1831             UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname,
1832             utsname()->machine);
1833         /*
1834          * Register the top level struct config_item_type with TCM core
1835          */
1836         fabric = target_fabric_configfs_init(THIS_MODULE, "qla2xxx");
1837         if (IS_ERR(fabric)) {
1838                 pr_err("target_fabric_configfs_init() failed\n");
1839                 return PTR_ERR(fabric);
1840         }
1841         /*
1842          * Setup fabric->tf_ops from our local tcm_qla2xxx_ops
1843          */
1844         fabric->tf_ops = tcm_qla2xxx_ops;
1845         /*
1846          * Setup default attribute lists for various fabric->tf_cit_tmpl
1847          */
1848         TF_CIT_TMPL(fabric)->tfc_wwn_cit.ct_attrs = tcm_qla2xxx_wwn_attrs;
1849         TF_CIT_TMPL(fabric)->tfc_tpg_base_cit.ct_attrs = tcm_qla2xxx_tpg_attrs;
1850         TF_CIT_TMPL(fabric)->tfc_tpg_attrib_cit.ct_attrs =
1851                                                 tcm_qla2xxx_tpg_attrib_attrs;
1852         TF_CIT_TMPL(fabric)->tfc_tpg_param_cit.ct_attrs = NULL;
1853         TF_CIT_TMPL(fabric)->tfc_tpg_np_base_cit.ct_attrs = NULL;
1854         TF_CIT_TMPL(fabric)->tfc_tpg_nacl_base_cit.ct_attrs = NULL;
1855         TF_CIT_TMPL(fabric)->tfc_tpg_nacl_attrib_cit.ct_attrs = NULL;
1856         TF_CIT_TMPL(fabric)->tfc_tpg_nacl_auth_cit.ct_attrs = NULL;
1857         TF_CIT_TMPL(fabric)->tfc_tpg_nacl_param_cit.ct_attrs = NULL;
1858         /*
1859          * Register the fabric for use within TCM
1860          */
1861         ret = target_fabric_configfs_register(fabric);
1862         if (ret < 0) {
1863                 pr_err("target_fabric_configfs_register() failed for TCM_QLA2XXX\n");
1864                 return ret;
1865         }
1866         /*
1867          * Setup our local pointer to *fabric
1868          */
1869         tcm_qla2xxx_fabric_configfs = fabric;
1870         pr_debug("TCM_QLA2XXX[0] - Set fabric -> tcm_qla2xxx_fabric_configfs\n");
1871
1872         /*
1873          * Register the top level struct config_item_type for NPIV with TCM core
1874          */
1875         npiv_fabric = target_fabric_configfs_init(THIS_MODULE, "qla2xxx_npiv");
1876         if (IS_ERR(npiv_fabric)) {
1877                 pr_err("target_fabric_configfs_init() failed\n");
1878                 ret = PTR_ERR(npiv_fabric);
1879                 goto out_fabric;
1880         }
1881         /*
1882          * Setup fabric->tf_ops from our local tcm_qla2xxx_npiv_ops
1883          */
1884         npiv_fabric->tf_ops = tcm_qla2xxx_npiv_ops;
1885         /*
1886          * Setup default attribute lists for various npiv_fabric->tf_cit_tmpl
1887          */
1888         TF_CIT_TMPL(npiv_fabric)->tfc_wwn_cit.ct_attrs = tcm_qla2xxx_wwn_attrs;
1889         TF_CIT_TMPL(npiv_fabric)->tfc_tpg_base_cit.ct_attrs = NULL;
1890         TF_CIT_TMPL(npiv_fabric)->tfc_tpg_attrib_cit.ct_attrs = NULL;
1891         TF_CIT_TMPL(npiv_fabric)->tfc_tpg_param_cit.ct_attrs = NULL;
1892         TF_CIT_TMPL(npiv_fabric)->tfc_tpg_np_base_cit.ct_attrs = NULL;
1893         TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_base_cit.ct_attrs = NULL;
1894         TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_attrib_cit.ct_attrs = NULL;
1895         TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_auth_cit.ct_attrs = NULL;
1896         TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_param_cit.ct_attrs = NULL;
1897         /*
1898          * Register the npiv_fabric for use within TCM
1899          */
1900         ret = target_fabric_configfs_register(npiv_fabric);
1901         if (ret < 0) {
1902                 pr_err("target_fabric_configfs_register() failed for TCM_QLA2XXX\n");
1903                 goto out_fabric;
1904         }
1905         /*
1906          * Setup our local pointer to *npiv_fabric
1907          */
1908         tcm_qla2xxx_npiv_fabric_configfs = npiv_fabric;
1909         pr_debug("TCM_QLA2XXX[0] - Set fabric -> tcm_qla2xxx_npiv_fabric_configfs\n");
1910
1911         tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free",
1912                                                 WQ_MEM_RECLAIM, 0);
1913         if (!tcm_qla2xxx_free_wq) {
1914                 ret = -ENOMEM;
1915                 goto out_fabric_npiv;
1916         }
1917
1918         tcm_qla2xxx_cmd_wq = alloc_workqueue("tcm_qla2xxx_cmd", 0, 0);
1919         if (!tcm_qla2xxx_cmd_wq) {
1920                 ret = -ENOMEM;
1921                 goto out_free_wq;
1922         }
1923
1924         return 0;
1925
1926 out_free_wq:
1927         destroy_workqueue(tcm_qla2xxx_free_wq);
1928 out_fabric_npiv:
1929         target_fabric_configfs_deregister(tcm_qla2xxx_npiv_fabric_configfs);
1930 out_fabric:
1931         target_fabric_configfs_deregister(tcm_qla2xxx_fabric_configfs);
1932         return ret;
1933 }
1934
1935 static void tcm_qla2xxx_deregister_configfs(void)
1936 {
1937         destroy_workqueue(tcm_qla2xxx_cmd_wq);
1938         destroy_workqueue(tcm_qla2xxx_free_wq);
1939
1940         target_fabric_configfs_deregister(tcm_qla2xxx_fabric_configfs);
1941         tcm_qla2xxx_fabric_configfs = NULL;
1942         pr_debug("TCM_QLA2XXX[0] - Cleared tcm_qla2xxx_fabric_configfs\n");
1943
1944         target_fabric_configfs_deregister(tcm_qla2xxx_npiv_fabric_configfs);
1945         tcm_qla2xxx_npiv_fabric_configfs = NULL;
1946         pr_debug("TCM_QLA2XXX[0] - Cleared tcm_qla2xxx_npiv_fabric_configfs\n");
1947 }
1948
1949 static int __init tcm_qla2xxx_init(void)
1950 {
1951         int ret;
1952
1953         ret = tcm_qla2xxx_register_configfs();
1954         if (ret < 0)
1955                 return ret;
1956
1957         return 0;
1958 }
1959
1960 static void __exit tcm_qla2xxx_exit(void)
1961 {
1962         tcm_qla2xxx_deregister_configfs();
1963 }
1964
1965 MODULE_DESCRIPTION("TCM QLA2XXX series NPIV enabled fabric driver");
1966 MODULE_LICENSE("GPL");
1967 module_init(tcm_qla2xxx_init);
1968 module_exit(tcm_qla2xxx_exit);