drivers/scsi/qla2xxx/tcm_qla2xxx.c

   1 /*******************************************************************************
   2  * This file contains tcm implementation using v4 configfs fabric infrastructure
   3  * for QLogic target mode HBAs
   4  *
   5  * ?? Copyright 2010-2011 RisingTide Systems LLC.
   6  *
   7  * Licensed to the Linux Foundation under the General Public License (GPL)
   8  * version 2.
   9  *
  10  * Author: Nicholas A. Bellinger <nab@risingtidesystems.com>
  11  *
  12  * tcm_qla2xxx_parse_wwn() and tcm_qla2xxx_format_wwn() contains code from
  13  * the TCM_FC / Open-FCoE.org fabric module.
  14  *
  15  * Copyright (c) 2010 Cisco Systems, Inc
  16  *
  17  * This program is free software; you can redistribute it and/or modify
  18  * it under the terms of the GNU General Public License as published by
  19  * the Free Software Foundation; either version 2 of the License, or
  20  * (at your option) any later version.
  21  *
  22  * This program is distributed in the hope that it will be useful,
  23  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  24  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  25  * GNU General Public License for more details.
  26  ****************************************************************************/
  27
  28
  29 #include <linux/module.h>
  30 #include <linux/moduleparam.h>
  31 #include <generated/utsrelease.h>
  32 #include <linux/utsname.h>
  33 #include <linux/init.h>
  34 #include <linux/list.h>
  35 #include <linux/slab.h>
  36 #include <linux/kthread.h>
  37 #include <linux/types.h>
  38 #include <linux/string.h>
  39 #include <linux/configfs.h>
  40 #include <linux/ctype.h>
  41 #include <linux/string.h>
  42 #include <linux/ctype.h>
  43 #include <asm/unaligned.h>
  44 #include <scsi/scsi.h>
  45 #include <scsi/scsi_host.h>
  46 #include <scsi/scsi_device.h>
  47 #include <scsi/scsi_cmnd.h>
  48 #include <target/target_core_base.h>
  49 #include <target/target_core_fabric.h>
  50 #include <target/target_core_fabric_configfs.h>
  51 #include <target/target_core_configfs.h>
  52 #include <target/configfs_macros.h>
  53
  54 #include "qla_def.h"
  55 #include "qla_target.h"
  56 #include "tcm_qla2xxx.h"
  57
  58 struct workqueue_struct *tcm_qla2xxx_free_wq;
  59 struct workqueue_struct *tcm_qla2xxx_cmd_wq;
  60
  61 static int tcm_qla2xxx_check_true(struct se_portal_group *se_tpg)
  62 {
  63         return 1;
  64 }
  65
  66 static int tcm_qla2xxx_check_false(struct se_portal_group *se_tpg)
  67 {
  68         return 0;
  69 }
  70
  71 /*
  72  * Parse WWN.
  73  * If strict, we require lower-case hex and colon separators to be sure
  74  * the name is the same as what would be generated by ft_format_wwn()
  75  * so the name and wwn are mapped one-to-one.
  76  */
  77 static ssize_t tcm_qla2xxx_parse_wwn(const char *name, u64 *wwn, int strict)
  78 {
  79         const char *cp;
  80         char c;
  81         u32 nibble;
  82         u32 byte = 0;
  83         u32 pos = 0;
  84         u32 err;
  85
  86         *wwn = 0;
  87         for (cp = name; cp < &name[TCM_QLA2XXX_NAMELEN - 1]; cp++) {
  88                 c = *cp;
  89                 if (c == '\n' && cp[1] == '\0')
  90                         continue;
  91                 if (strict && pos++ == 2 && byte++ < 7) {
  92                         pos = 0;
  93                         if (c == ':')
  94                                 continue;
  95                         err = 1;
  96                         goto fail;
  97                 }
  98                 if (c == '\0') {
  99                         err = 2;
 100                         if (strict && byte != 8)
 101                                 goto fail;
 102                         return cp - name;
 103                 }
 104                 err = 3;
 105                 if (isdigit(c))
 106                         nibble = c - '0';
 107                 else if (isxdigit(c) && (islower(c) || !strict))
 108                         nibble = tolower(c) - 'a' + 10;
 109                 else
 110                         goto fail;
 111                 *wwn = (*wwn << 4) | nibble;
 112         }
 113         err = 4;
 114 fail:
 115         pr_debug("err %u len %zu pos %u byte %u\n",
 116                         err, cp - name, pos, byte);
 117         return -1;
 118 }
 119
 120 static ssize_t tcm_qla2xxx_format_wwn(char *buf, size_t len, u64 wwn)
 121 {
 122         u8 b[8];
 123
 124         put_unaligned_be64(wwn, b);
 125         return snprintf(buf, len,
 126                 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x",
 127                 b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7]);
 128 }
 129
 130 static char *tcm_qla2xxx_get_fabric_name(void)
 131 {
 132         return "qla2xxx";
 133 }
 134
 135 /*
 136  * From drivers/scsi/scsi_transport_fc.c:fc_parse_wwn
 137  */
 138 static int tcm_qla2xxx_npiv_extract_wwn(const char *ns, u64 *nm)
 139 {
 140         unsigned int i, j, value;
 141         u8 wwn[8];
 142
 143         memset(wwn, 0, sizeof(wwn));
 144
 145         /* Validate and store the new name */
 146         for (i = 0, j = 0; i < 16; i++) {
 147                 value = hex_to_bin(*ns++);
 148                 if (value >= 0)
 149                         j = (j << 4) | value;
 150                 else
 151                         return -EINVAL;
 152
 153                 if (i % 2) {
 154                         wwn[i/2] = j & 0xff;
 155                         j = 0;
 156                 }
 157         }
 158
 159         *nm = wwn_to_u64(wwn);
 160         return 0;
 161 }
 162
 163 /*
 164  * This parsing logic follows drivers/scsi/scsi_transport_fc.c:
 165  * store_fc_host_vport_create()
 166  */
 167 static int tcm_qla2xxx_npiv_parse_wwn(
 168         const char *name,
 169         size_t count,
 170         u64 *wwpn,
 171         u64 *wwnn)
 172 {
 173         unsigned int cnt = count;
 174         int rc;
 175
 176         *wwpn = 0;
 177         *wwnn = 0;
 178
 179         /* count may include a LF at end of string */
 180         if (name[cnt-1] == '\n')
 181                 cnt--;
 182
 183         /* validate we have enough characters for WWPN */
 184         if ((cnt != (16+1+16)) || (name[16] != ':'))
 185                 return -EINVAL;
 186
 187         rc = tcm_qla2xxx_npiv_extract_wwn(&name[0], wwpn);
 188         if (rc != 0)
 189                 return rc;
 190
 191         rc = tcm_qla2xxx_npiv_extract_wwn(&name[17], wwnn);
 192         if (rc != 0)
 193                 return rc;
 194
 195         return 0;
 196 }
 197
 198 static ssize_t tcm_qla2xxx_npiv_format_wwn(char *buf, size_t len,
 199                                         u64 wwpn, u64 wwnn)
 200 {
 201         u8 b[8], b2[8];
 202
 203         put_unaligned_be64(wwpn, b);
 204         put_unaligned_be64(wwnn, b2);
 205         return snprintf(buf, len,
 206                 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x,"
 207                 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x",
 208                 b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7],
 209                 b2[0], b2[1], b2[2], b2[3], b2[4], b2[5], b2[6], b2[7]);
 210 }
 211
 212 static char *tcm_qla2xxx_npiv_get_fabric_name(void)
 213 {
 214         return "qla2xxx_npiv";
 215 }
 216
 217 static u8 tcm_qla2xxx_get_fabric_proto_ident(struct se_portal_group *se_tpg)
 218 {
 219         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 220                                 struct tcm_qla2xxx_tpg, se_tpg);
 221         struct tcm_qla2xxx_lport *lport = tpg->lport;
 222         u8 proto_id;
 223
 224         switch (lport->lport_proto_id) {
 225         case SCSI_PROTOCOL_FCP:
 226         default:
 227                 proto_id = fc_get_fabric_proto_ident(se_tpg);
 228                 break;
 229         }
 230
 231         return proto_id;
 232 }
 233
 234 static char *tcm_qla2xxx_get_fabric_wwn(struct se_portal_group *se_tpg)
 235 {
 236         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 237                                 struct tcm_qla2xxx_tpg, se_tpg);
 238         struct tcm_qla2xxx_lport *lport = tpg->lport;
 239
 240         return &lport->lport_name[0];
 241 }
 242
 243 static char *tcm_qla2xxx_npiv_get_fabric_wwn(struct se_portal_group *se_tpg)
 244 {
 245         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 246                                 struct tcm_qla2xxx_tpg, se_tpg);
 247         struct tcm_qla2xxx_lport *lport = tpg->lport;
 248
 249         return &lport->lport_npiv_name[0];
 250 }
 251
 252 static u16 tcm_qla2xxx_get_tag(struct se_portal_group *se_tpg)
 253 {
 254         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 255                                 struct tcm_qla2xxx_tpg, se_tpg);
 256         return tpg->lport_tpgt;
 257 }
 258
 259 static u32 tcm_qla2xxx_get_default_depth(struct se_portal_group *se_tpg)
 260 {
 261         return 1;
 262 }
 263
 264 static u32 tcm_qla2xxx_get_pr_transport_id(
 265         struct se_portal_group *se_tpg,
 266         struct se_node_acl *se_nacl,
 267         struct t10_pr_registration *pr_reg,
 268         int *format_code,
 269         unsigned char *buf)
 270 {
 271         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 272                                 struct tcm_qla2xxx_tpg, se_tpg);
 273         struct tcm_qla2xxx_lport *lport = tpg->lport;
 274         int ret = 0;
 275
 276         switch (lport->lport_proto_id) {
 277         case SCSI_PROTOCOL_FCP:
 278         default:
 279                 ret = fc_get_pr_transport_id(se_tpg, se_nacl, pr_reg,
 280                                         format_code, buf);
 281                 break;
 282         }
 283
 284         return ret;
 285 }
 286
 287 static u32 tcm_qla2xxx_get_pr_transport_id_len(
 288         struct se_portal_group *se_tpg,
 289         struct se_node_acl *se_nacl,
 290         struct t10_pr_registration *pr_reg,
 291         int *format_code)
 292 {
 293         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 294                                 struct tcm_qla2xxx_tpg, se_tpg);
 295         struct tcm_qla2xxx_lport *lport = tpg->lport;
 296         int ret = 0;
 297
 298         switch (lport->lport_proto_id) {
 299         case SCSI_PROTOCOL_FCP:
 300         default:
 301                 ret = fc_get_pr_transport_id_len(se_tpg, se_nacl, pr_reg,
 302                                         format_code);
 303                 break;
 304         }
 305
 306         return ret;
 307 }
 308
 309 static char *tcm_qla2xxx_parse_pr_out_transport_id(
 310         struct se_portal_group *se_tpg,
 311         const char *buf,
 312         u32 *out_tid_len,
 313         char **port_nexus_ptr)
 314 {
 315         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 316                                 struct tcm_qla2xxx_tpg, se_tpg);
 317         struct tcm_qla2xxx_lport *lport = tpg->lport;
 318         char *tid = NULL;
 319
 320         switch (lport->lport_proto_id) {
 321         case SCSI_PROTOCOL_FCP:
 322         default:
 323                 tid = fc_parse_pr_out_transport_id(se_tpg, buf, out_tid_len,
 324                                         port_nexus_ptr);
 325                 break;
 326         }
 327
 328         return tid;
 329 }
 330
 331 static int tcm_qla2xxx_check_demo_mode(struct se_portal_group *se_tpg)
 332 {
 333         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 334                                 struct tcm_qla2xxx_tpg, se_tpg);
 335
 336         return QLA_TPG_ATTRIB(tpg)->generate_node_acls;
 337 }
 338
 339 static int tcm_qla2xxx_check_demo_mode_cache(struct se_portal_group *se_tpg)
 340 {
 341         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 342                                 struct tcm_qla2xxx_tpg, se_tpg);
 343
 344         return QLA_TPG_ATTRIB(tpg)->cache_dynamic_acls;
 345 }
 346
 347 static int tcm_qla2xxx_check_demo_write_protect(struct se_portal_group *se_tpg)
 348 {
 349         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 350                                 struct tcm_qla2xxx_tpg, se_tpg);
 351
 352         return QLA_TPG_ATTRIB(tpg)->demo_mode_write_protect;
 353 }
 354
 355 static int tcm_qla2xxx_check_prod_write_protect(struct se_portal_group *se_tpg)
 356 {
 357         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 358                                 struct tcm_qla2xxx_tpg, se_tpg);
 359
 360         return QLA_TPG_ATTRIB(tpg)->prod_mode_write_protect;
 361 }
 362
 363 static struct se_node_acl *tcm_qla2xxx_alloc_fabric_acl(
 364         struct se_portal_group *se_tpg)
 365 {
 366         struct tcm_qla2xxx_nacl *nacl;
 367
 368         nacl = kzalloc(sizeof(struct tcm_qla2xxx_nacl), GFP_KERNEL);
 369         if (!nacl) {
 370                 pr_err("Unable to alocate struct tcm_qla2xxx_nacl\n");
 371                 return NULL;
 372         }
 373
 374         return &nacl->se_node_acl;
 375 }
 376
 377 static void tcm_qla2xxx_release_fabric_acl(
 378         struct se_portal_group *se_tpg,
 379         struct se_node_acl *se_nacl)
 380 {
 381         struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
 382                         struct tcm_qla2xxx_nacl, se_node_acl);
 383         kfree(nacl);
 384 }
 385
 386 static u32 tcm_qla2xxx_tpg_get_inst_index(struct se_portal_group *se_tpg)
 387 {
 388         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 389                                 struct tcm_qla2xxx_tpg, se_tpg);
 390
 391         return tpg->lport_tpgt;
 392 }
 393
 394 static void tcm_qla2xxx_complete_mcmd(struct work_struct *work)
 395 {
 396         struct qla_tgt_mgmt_cmd *mcmd = container_of(work,
 397                         struct qla_tgt_mgmt_cmd, free_work);
 398
 399         transport_generic_free_cmd(&mcmd->se_cmd, 0);
 400 }
 401
 402 /*
 403  * Called from qla_target_template->free_mcmd(), and will call
 404  * tcm_qla2xxx_release_cmd() via normal struct target_core_fabric_ops
 405  * release callback.  qla_hw_data->hardware_lock is expected to be held
 406  */
 407 static void tcm_qla2xxx_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
 408 {
 409         INIT_WORK(&mcmd->free_work, tcm_qla2xxx_complete_mcmd);
 410         queue_work(tcm_qla2xxx_free_wq, &mcmd->free_work);
 411 }
 412
 413 static void tcm_qla2xxx_complete_free(struct work_struct *work)
 414 {
 415         struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
 416
 417         transport_generic_free_cmd(&cmd->se_cmd, 0);
 418 }
 419
 420 /*
 421  * Called from qla_target_template->free_cmd(), and will call
 422  * tcm_qla2xxx_release_cmd via normal struct target_core_fabric_ops
 423  * release callback.  qla_hw_data->hardware_lock is expected to be held
 424  */
 425 static void tcm_qla2xxx_free_cmd(struct qla_tgt_cmd *cmd)
 426 {
 427         INIT_WORK(&cmd->work, tcm_qla2xxx_complete_free);
 428         queue_work(tcm_qla2xxx_free_wq, &cmd->work);
 429 }
 430
 431 /*
 432  * Called from struct target_core_fabric_ops->check_stop_free() context
 433  */
 434 static int tcm_qla2xxx_check_stop_free(struct se_cmd *se_cmd)
 435 {
 436         return target_put_sess_cmd(se_cmd->se_sess, se_cmd);
 437 }
 438
 439 /* tcm_qla2xxx_release_cmd - Callback from TCM Core to release underlying
 440  * fabric descriptor @se_cmd command to release
 441  */
 442 static void tcm_qla2xxx_release_cmd(struct se_cmd *se_cmd)
 443 {
 444         struct qla_tgt_cmd *cmd;
 445
 446         if (se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) {
 447                 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
 448                                 struct qla_tgt_mgmt_cmd, se_cmd);
 449                 qlt_free_mcmd(mcmd);
 450                 return;
 451         }
 452
 453         cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
 454         qlt_free_cmd(cmd);
 455 }
 456
 457 static int tcm_qla2xxx_shutdown_session(struct se_session *se_sess)
 458 {
 459         struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
 460         struct scsi_qla_host *vha;
 461         unsigned long flags;
 462
 463         BUG_ON(!sess);
 464         vha = sess->vha;
 465
 466         spin_lock_irqsave(&vha->hw->hardware_lock, flags);
 467         sess->tearing_down = 1;
 468         target_splice_sess_cmd_list(se_sess);
 469         spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
 470
 471         return 1;
 472 }
 473
 474 static void tcm_qla2xxx_close_session(struct se_session *se_sess)
 475 {
 476         struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
 477         struct scsi_qla_host *vha;
 478         unsigned long flags;
 479
 480         BUG_ON(!sess);
 481         vha = sess->vha;
 482
 483         spin_lock_irqsave(&vha->hw->hardware_lock, flags);
 484         qlt_unreg_sess(sess);
 485         spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
 486 }
 487
 488 static u32 tcm_qla2xxx_sess_get_index(struct se_session *se_sess)
 489 {
 490         return 0;
 491 }
 492
 493 /*
 494  * The LIO target core uses DMA_TO_DEVICE to mean that data is going
 495  * to the target (eg handling a WRITE) and DMA_FROM_DEVICE to mean
 496  * that data is coming from the target (eg handling a READ).  However,
 497  * this is just the opposite of what we have to tell the DMA mapping
 498  * layer -- eg when handling a READ, the HBA will have to DMA the data
 499  * out of memory so it can send it to the initiator, which means we
 500  * need to use DMA_TO_DEVICE when we map the data.
 501  */
 502 static enum dma_data_direction tcm_qla2xxx_mapping_dir(struct se_cmd *se_cmd)
 503 {
 504         if (se_cmd->se_cmd_flags & SCF_BIDI)
 505                 return DMA_BIDIRECTIONAL;
 506
 507         switch (se_cmd->data_direction) {
 508         case DMA_TO_DEVICE:
 509                 return DMA_FROM_DEVICE;
 510         case DMA_FROM_DEVICE:
 511                 return DMA_TO_DEVICE;
 512         case DMA_NONE:
 513         default:
 514                 return DMA_NONE;
 515         }
 516 }
 517
 518 static int tcm_qla2xxx_write_pending(struct se_cmd *se_cmd)
 519 {
 520         struct qla_tgt_cmd *cmd = container_of(se_cmd,
 521                                 struct qla_tgt_cmd, se_cmd);
 522
 523         cmd->bufflen = se_cmd->data_length;
 524         cmd->dma_data_direction = tcm_qla2xxx_mapping_dir(se_cmd);
 525
 526         cmd->sg_cnt = se_cmd->t_data_nents;
 527         cmd->sg = se_cmd->t_data_sg;
 528
 529         /*
 530          * qla_target.c:qlt_rdy_to_xfer() will call pci_map_sg() to setup
 531          * the SGL mappings into PCIe memory for incoming FCP WRITE data.
 532          */
 533         return qlt_rdy_to_xfer(cmd);
 534 }
 535
 536 static int tcm_qla2xxx_write_pending_status(struct se_cmd *se_cmd)
 537 {
 538         unsigned long flags;
 539         /*
 540          * Check for WRITE_PENDING status to determine if we need to wait for
 541          * CTIO aborts to be posted via hardware in tcm_qla2xxx_handle_data().
 542          */
 543         spin_lock_irqsave(&se_cmd->t_state_lock, flags);
 544         if (se_cmd->t_state == TRANSPORT_WRITE_PENDING ||
 545             se_cmd->t_state == TRANSPORT_COMPLETE_QF_WP) {
 546                 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
 547                 wait_for_completion_timeout(&se_cmd->t_transport_stop_comp,
 548                                                 3000);
 549                 return 0;
 550         }
 551         spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
 552
 553         return 0;
 554 }
 555
 556 static void tcm_qla2xxx_set_default_node_attrs(struct se_node_acl *nacl)
 557 {
 558         return;
 559 }
 560
 561 static u32 tcm_qla2xxx_get_task_tag(struct se_cmd *se_cmd)
 562 {
 563         struct qla_tgt_cmd *cmd = container_of(se_cmd,
 564                                 struct qla_tgt_cmd, se_cmd);
 565
 566         return cmd->tag;
 567 }
 568
 569 static int tcm_qla2xxx_get_cmd_state(struct se_cmd *se_cmd)
 570 {
 571         return 0;
 572 }
 573
 574 /*
 575  * Called from process context in qla_target.c:qlt_do_work() code
 576  */
 577 static int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd,
 578         unsigned char *cdb, uint32_t data_length, int fcp_task_attr,
 579         int data_dir, int bidi)
 580 {
 581         struct se_cmd *se_cmd = &cmd->se_cmd;
 582         struct se_session *se_sess;
 583         struct qla_tgt_sess *sess;
 584         int flags = TARGET_SCF_ACK_KREF;
 585
 586         if (bidi)
 587                 flags |= TARGET_SCF_BIDI_OP;
 588
 589         sess = cmd->sess;
 590         if (!sess) {
 591                 pr_err("Unable to locate struct qla_tgt_sess from qla_tgt_cmd\n");
 592                 return -EINVAL;
 593         }
 594
 595         se_sess = sess->se_sess;
 596         if (!se_sess) {
 597                 pr_err("Unable to locate active struct se_session\n");
 598                 return -EINVAL;
 599         }
 600
 601         target_submit_cmd(se_cmd, se_sess, cdb, &cmd->sense_buffer[0],
 602                                 cmd->unpacked_lun, data_length, fcp_task_attr,
 603                                 data_dir, flags);
 604         return 0;
 605 }
 606
 607 static void tcm_qla2xxx_do_rsp(struct work_struct *work)
 608 {
 609         struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
 610         /*
 611          * Dispatch ->queue_status from workqueue process context
 612          */
 613         transport_generic_request_failure(&cmd->se_cmd);
 614 }
 615
 616 /*
 617  * Called from qla_target.c:qlt_do_ctio_completion()
 618  */
 619 static int tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd)
 620 {
 621         struct se_cmd *se_cmd = &cmd->se_cmd;
 622         unsigned long flags;
 623         /*
 624          * Ensure that the complete FCP WRITE payload has been received.
 625          * Otherwise return an exception via CHECK_CONDITION status.
 626          */
 627         if (!cmd->write_data_transferred) {
 628                 /*
 629                  * Check if se_cmd has already been aborted via LUN_RESET, and
 630                  * waiting upon completion in tcm_qla2xxx_write_pending_status()
 631                  */
 632                 spin_lock_irqsave(&se_cmd->t_state_lock, flags);
 633                 if (se_cmd->transport_state & CMD_T_ABORTED) {
 634                         spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
 635                         complete(&se_cmd->t_transport_stop_comp);
 636                         return 0;
 637                 }
 638                 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
 639
 640                 se_cmd->scsi_sense_reason = TCM_CHECK_CONDITION_ABORT_CMD;
 641                 INIT_WORK(&cmd->work, tcm_qla2xxx_do_rsp);
 642                 queue_work(tcm_qla2xxx_free_wq, &cmd->work);
 643                 return 0;
 644         }
 645         /*
 646          * We now tell TCM to queue this WRITE CDB with TRANSPORT_PROCESS_WRITE
 647          * status to the backstore processing thread.
 648          */
 649         return transport_generic_handle_data(&cmd->se_cmd);
 650 }
 651
 652 /*
 653  * Called from qla_target.c:qlt_issue_task_mgmt()
 654  */
 655 int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *mcmd, uint32_t lun,
 656                         uint8_t tmr_func, uint32_t tag)
 657 {
 658         struct qla_tgt_sess *sess = mcmd->sess;
 659         struct se_cmd *se_cmd = &mcmd->se_cmd;
 660
 661         return target_submit_tmr(se_cmd, sess->se_sess, NULL, lun, mcmd,
 662                         tmr_func, GFP_ATOMIC, tag, TARGET_SCF_ACK_KREF);
 663 }
 664
 665 static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd)
 666 {
 667         struct qla_tgt_cmd *cmd = container_of(se_cmd,
 668                                 struct qla_tgt_cmd, se_cmd);
 669
 670         cmd->bufflen = se_cmd->data_length;
 671         cmd->dma_data_direction = tcm_qla2xxx_mapping_dir(se_cmd);
 672         cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED);
 673
 674         cmd->sg_cnt = se_cmd->t_data_nents;
 675         cmd->sg = se_cmd->t_data_sg;
 676         cmd->offset = 0;
 677
 678         /*
 679          * Now queue completed DATA_IN the qla2xxx LLD and response ring
 680          */
 681         return qlt_xmit_response(cmd, QLA_TGT_XMIT_DATA|QLA_TGT_XMIT_STATUS,
 682                                 se_cmd->scsi_status);
 683 }
 684
 685 static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd)
 686 {
 687         struct qla_tgt_cmd *cmd = container_of(se_cmd,
 688                                 struct qla_tgt_cmd, se_cmd);
 689         int xmit_type = QLA_TGT_XMIT_STATUS;
 690
 691         cmd->bufflen = se_cmd->data_length;
 692         cmd->sg = NULL;
 693         cmd->sg_cnt = 0;
 694         cmd->offset = 0;
 695         cmd->dma_data_direction = tcm_qla2xxx_mapping_dir(se_cmd);
 696         cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED);
 697
 698         if (se_cmd->data_direction == DMA_FROM_DEVICE) {
 699                 /*
 700                  * For FCP_READ with CHECK_CONDITION status, clear cmd->bufflen
 701                  * for qla_tgt_xmit_response LLD code
 702                  */
 703                 se_cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT;
 704                 se_cmd->residual_count = se_cmd->data_length;
 705
 706                 cmd->bufflen = 0;
 707         }
 708         /*
 709          * Now queue status response to qla2xxx LLD code and response ring
 710          */
 711         return qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status);
 712 }
 713
 714 static int tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd)
 715 {
 716         struct se_tmr_req *se_tmr = se_cmd->se_tmr_req;
 717         struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
 718                                 struct qla_tgt_mgmt_cmd, se_cmd);
 719
 720         pr_debug("queue_tm_rsp: mcmd: %p func: 0x%02x response: 0x%02x\n",
 721                         mcmd, se_tmr->function, se_tmr->response);
 722         /*
 723          * Do translation between TCM TM response codes and
 724          * QLA2xxx FC TM response codes.
 725          */
 726         switch (se_tmr->response) {
 727         case TMR_FUNCTION_COMPLETE:
 728                 mcmd->fc_tm_rsp = FC_TM_SUCCESS;
 729                 break;
 730         case TMR_TASK_DOES_NOT_EXIST:
 731                 mcmd->fc_tm_rsp = FC_TM_BAD_CMD;
 732                 break;
 733         case TMR_FUNCTION_REJECTED:
 734                 mcmd->fc_tm_rsp = FC_TM_REJECT;
 735                 break;
 736         case TMR_LUN_DOES_NOT_EXIST:
 737         default:
 738                 mcmd->fc_tm_rsp = FC_TM_FAILED;
 739                 break;
 740         }
 741         /*
 742          * Queue the TM response to QLA2xxx LLD to build a
 743          * CTIO response packet.
 744          */
 745         qlt_xmit_tm_rsp(mcmd);
 746
 747         return 0;
 748 }
 749
 750 static u16 tcm_qla2xxx_get_fabric_sense_len(void)
 751 {
 752         return 0;
 753 }
 754
 755 static u16 tcm_qla2xxx_set_fabric_sense_len(struct se_cmd *se_cmd,
 756                                         u32 sense_length)
 757 {
 758         return 0;
 759 }
 760
 761 /* Local pointer to allocated TCM configfs fabric module */
 762 struct target_fabric_configfs *tcm_qla2xxx_fabric_configfs;
 763 struct target_fabric_configfs *tcm_qla2xxx_npiv_fabric_configfs;
 764
 765 static int tcm_qla2xxx_setup_nacl_from_rport(
 766         struct se_portal_group *se_tpg,
 767         struct se_node_acl *se_nacl,
 768         struct tcm_qla2xxx_lport *lport,
 769         struct tcm_qla2xxx_nacl *nacl,
 770         u64 rport_wwnn)
 771 {
 772         struct scsi_qla_host *vha = lport->qla_vha;
 773         struct Scsi_Host *sh = vha->host;
 774         struct fc_host_attrs *fc_host = shost_to_fc_host(sh);
 775         struct fc_rport *rport;
 776         unsigned long flags;
 777         void *node;
 778         int rc;
 779
 780         /*
 781          * Scan the existing rports, and create a session for the
 782          * explict NodeACL is an matching rport->node_name already
 783          * exists.
 784          */
 785         spin_lock_irqsave(sh->host_lock, flags);
 786         list_for_each_entry(rport, &fc_host->rports, peers) {
 787                 if (rport_wwnn != rport->node_name)
 788                         continue;
 789
 790                 pr_debug("Located existing rport_wwpn and rport->node_name: 0x%016LX, port_id: 0x%04x\n",
 791                     rport->node_name, rport->port_id);
 792                 nacl->nport_id = rport->port_id;
 793
 794                 spin_unlock_irqrestore(sh->host_lock, flags);
 795
 796                 spin_lock_irqsave(&vha->hw->hardware_lock, flags);
 797                 node = btree_lookup32(&lport->lport_fcport_map, rport->port_id);
 798                 if (node) {
 799                         rc = btree_update32(&lport->lport_fcport_map,
 800                                             rport->port_id, se_nacl);
 801                 } else {
 802                         rc = btree_insert32(&lport->lport_fcport_map,
 803                                             rport->port_id, se_nacl,
 804                                             GFP_ATOMIC);
 805                 }
 806                 spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
 807
 808                 if (rc) {
 809                         pr_err("Unable to insert se_nacl into fcport_map");
 810                         WARN_ON(rc > 0);
 811                         return rc;
 812                 }
 813
 814                 pr_debug("Inserted into fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%08x\n",
 815                     se_nacl, rport_wwnn, nacl->nport_id);
 816
 817                 return 1;
 818         }
 819         spin_unlock_irqrestore(sh->host_lock, flags);
 820
 821         return 0;
 822 }
 823
 824 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *,
 825                         struct tcm_qla2xxx_nacl *, struct qla_tgt_sess *);
 826 /*
 827  * Expected to be called with struct qla_hw_data->hardware_lock held
 828  */
 829 static void tcm_qla2xxx_clear_nacl_from_fcport_map(struct qla_tgt_sess *sess)
 830 {
 831         struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
 832         struct se_portal_group *se_tpg = se_nacl->se_tpg;
 833         struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
 834         struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
 835                                 struct tcm_qla2xxx_lport, lport_wwn);
 836         struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
 837                                 struct tcm_qla2xxx_nacl, se_node_acl);
 838         void *node;
 839
 840         pr_debug("fc_rport domain: port_id 0x%06x\n", nacl->nport_id);
 841
 842         node = btree_remove32(&lport->lport_fcport_map, nacl->nport_id);
 843         WARN_ON(node && (node != se_nacl));
 844
 845         pr_debug("Removed from fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%06x\n",
 846             se_nacl, nacl->nport_wwnn, nacl->nport_id);
 847         /*
 848          * Now clear the se_nacl and session pointers from our HW lport lookup
 849          * table mapping for this initiator's fabric S_ID and LOOP_ID entries.
 850          *
 851          * This is done ahead of callbacks into tcm_qla2xxx_free_session() ->
 852          * target_wait_for_sess_cmds() before the session waits for outstanding
 853          * I/O to complete, to avoid a race between session shutdown execution
 854          * and incoming ATIOs or TMRs picking up a stale se_node_act reference.
 855          */
 856         tcm_qla2xxx_clear_sess_lookup(lport, nacl, sess);
 857 }
 858
 859 static void tcm_qla2xxx_release_session(struct kref *kref)
 860 {
 861         struct se_session *se_sess = container_of(kref,
 862                         struct se_session, sess_kref);
 863
 864         qlt_unreg_sess(se_sess->fabric_sess_ptr);
 865 }
 866
 867 static void tcm_qla2xxx_put_session(struct se_session *se_sess)
 868 {
 869         struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
 870         struct qla_hw_data *ha = sess->vha->hw;
 871         unsigned long flags;
 872
 873         spin_lock_irqsave(&ha->hardware_lock, flags);
 874         kref_put(&se_sess->sess_kref, tcm_qla2xxx_release_session);
 875         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 876 }
 877
 878 static void tcm_qla2xxx_put_sess(struct qla_tgt_sess *sess)
 879 {
 880         tcm_qla2xxx_put_session(sess->se_sess);
 881 }
 882
 883 static void tcm_qla2xxx_shutdown_sess(struct qla_tgt_sess *sess)
 884 {
 885         tcm_qla2xxx_shutdown_session(sess->se_sess);
 886 }
 887
 888 static struct se_node_acl *tcm_qla2xxx_make_nodeacl(
 889         struct se_portal_group *se_tpg,
 890         struct config_group *group,
 891         const char *name)
 892 {
 893         struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
 894         struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
 895                                 struct tcm_qla2xxx_lport, lport_wwn);
 896         struct se_node_acl *se_nacl, *se_nacl_new;
 897         struct tcm_qla2xxx_nacl *nacl;
 898         u64 wwnn;
 899         u32 qla2xxx_nexus_depth;
 900         int rc;
 901
 902         if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0)
 903                 return ERR_PTR(-EINVAL);
 904
 905         se_nacl_new = tcm_qla2xxx_alloc_fabric_acl(se_tpg);
 906         if (!se_nacl_new)
 907                 return ERR_PTR(-ENOMEM);
 908 /* #warning FIXME: Hardcoded qla2xxx_nexus depth in tcm_qla2xxx_make_nodeacl */
 909         qla2xxx_nexus_depth = 1;
 910
 911         /*
 912          * se_nacl_new may be released by core_tpg_add_initiator_node_acl()
 913          * when converting a NodeACL from demo mode -> explict
 914          */
 915         se_nacl = core_tpg_add_initiator_node_acl(se_tpg, se_nacl_new,
 916                                 name, qla2xxx_nexus_depth);
 917         if (IS_ERR(se_nacl)) {
 918                 tcm_qla2xxx_release_fabric_acl(se_tpg, se_nacl_new);
 919                 return se_nacl;
 920         }
 921         /*
 922          * Locate our struct tcm_qla2xxx_nacl and set the FC Nport WWPN
 923          */
 924         nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
 925         nacl->nport_wwnn = wwnn;
 926         tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn);
 927         /*
 928          * Setup a se_nacl handle based on an a matching struct fc_rport setup
 929          * via drivers/scsi/qla2xxx/qla_init.c:qla2x00_reg_remote_port()
 930          */
 931         rc = tcm_qla2xxx_setup_nacl_from_rport(se_tpg, se_nacl, lport,
 932                                         nacl, wwnn);
 933         if (rc < 0) {
 934                 tcm_qla2xxx_release_fabric_acl(se_tpg, se_nacl_new);
 935                 return ERR_PTR(rc);
 936         }
 937
 938         return se_nacl;
 939 }
 940
 941 static void tcm_qla2xxx_drop_nodeacl(struct se_node_acl *se_acl)
 942 {
 943         struct se_portal_group *se_tpg = se_acl->se_tpg;
 944         struct tcm_qla2xxx_nacl *nacl = container_of(se_acl,
 945                                 struct tcm_qla2xxx_nacl, se_node_acl);
 946
 947         core_tpg_del_initiator_node_acl(se_tpg, se_acl, 1);
 948         kfree(nacl);
 949 }
 950
 951 /* Start items for tcm_qla2xxx_tpg_attrib_cit */
 952
 953 #define DEF_QLA_TPG_ATTRIB(name)                                        \
 954                                                                         \
 955 static ssize_t tcm_qla2xxx_tpg_attrib_show_##name(                      \
 956         struct se_portal_group *se_tpg,                                 \
 957         char *page)                                                     \
 958 {                                                                       \
 959         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,              \
 960                         struct tcm_qla2xxx_tpg, se_tpg);                \
 961                                                                         \
 962         return sprintf(page, "%u\n", QLA_TPG_ATTRIB(tpg)->name);        \
 963 }                                                                       \
 964                                                                         \
 965 static ssize_t tcm_qla2xxx_tpg_attrib_store_##name(                     \
 966         struct se_portal_group *se_tpg,                                 \
 967         const char *page,                                               \
 968         size_t count)                                                   \
 969 {                                                                       \
 970         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,              \
 971                         struct tcm_qla2xxx_tpg, se_tpg);                \
 972         unsigned long val;                                              \
 973         int ret;                                                        \
 974                                                                         \
 975         ret = kstrtoul(page, 0, &val);                                  \
 976         if (ret < 0) {                                                  \
 977                 pr_err("kstrtoul() failed with"                         \
 978                                 " ret: %d\n", ret);                     \
 979                 return -EINVAL;                                         \
 980         }                                                               \
 981         ret = tcm_qla2xxx_set_attrib_##name(tpg, val);                  \
 982                                                                         \
 983         return (!ret) ? count : -EINVAL;                                \
 984 }
 985
 986 #define DEF_QLA_TPG_ATTR_BOOL(_name)                                    \
 987                                                                         \
 988 static int tcm_qla2xxx_set_attrib_##_name(                              \
 989         struct tcm_qla2xxx_tpg *tpg,                                    \
 990         unsigned long val)                                              \
 991 {                                                                       \
 992         struct tcm_qla2xxx_tpg_attrib *a = &tpg->tpg_attrib;            \
 993                                                                         \
 994         if ((val != 0) && (val != 1)) {                                 \
 995                 pr_err("Illegal boolean value %lu\n", val);             \
 996                 return -EINVAL;                                         \
 997         }                                                               \
 998                                                                         \
 999         a->_name = val;                                                 \
1000         return 0;                                                       \
1001 }
1002
1003 #define QLA_TPG_ATTR(_name, _mode) \
1004         TF_TPG_ATTRIB_ATTR(tcm_qla2xxx, _name, _mode);
1005
1006 /*
1007  * Define tcm_qla2xxx_tpg_attrib_s_generate_node_acls
1008  */
1009 DEF_QLA_TPG_ATTR_BOOL(generate_node_acls);
1010 DEF_QLA_TPG_ATTRIB(generate_node_acls);
1011 QLA_TPG_ATTR(generate_node_acls, S_IRUGO | S_IWUSR);
1012
1013 /*
1014  Define tcm_qla2xxx_attrib_s_cache_dynamic_acls
1015  */
1016 DEF_QLA_TPG_ATTR_BOOL(cache_dynamic_acls);
1017 DEF_QLA_TPG_ATTRIB(cache_dynamic_acls);
1018 QLA_TPG_ATTR(cache_dynamic_acls, S_IRUGO | S_IWUSR);
1019
1020 /*
1021  * Define tcm_qla2xxx_tpg_attrib_s_demo_mode_write_protect
1022  */
1023 DEF_QLA_TPG_ATTR_BOOL(demo_mode_write_protect);
1024 DEF_QLA_TPG_ATTRIB(demo_mode_write_protect);
1025 QLA_TPG_ATTR(demo_mode_write_protect, S_IRUGO | S_IWUSR);
1026
1027 /*
1028  * Define tcm_qla2xxx_tpg_attrib_s_prod_mode_write_protect
1029  */
1030 DEF_QLA_TPG_ATTR_BOOL(prod_mode_write_protect);
1031 DEF_QLA_TPG_ATTRIB(prod_mode_write_protect);
1032 QLA_TPG_ATTR(prod_mode_write_protect, S_IRUGO | S_IWUSR);
1033
1034 static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = {
1035         &tcm_qla2xxx_tpg_attrib_generate_node_acls.attr,
1036         &tcm_qla2xxx_tpg_attrib_cache_dynamic_acls.attr,
1037         &tcm_qla2xxx_tpg_attrib_demo_mode_write_protect.attr,
1038         &tcm_qla2xxx_tpg_attrib_prod_mode_write_protect.attr,
1039         NULL,
1040 };
1041
1042 /* End items for tcm_qla2xxx_tpg_attrib_cit */
1043
1044 static ssize_t tcm_qla2xxx_tpg_show_enable(
1045         struct se_portal_group *se_tpg,
1046         char *page)
1047 {
1048         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1049                         struct tcm_qla2xxx_tpg, se_tpg);
1050
1051         return snprintf(page, PAGE_SIZE, "%d\n",
1052                         atomic_read(&tpg->lport_tpg_enabled));
1053 }
1054
1055 static ssize_t tcm_qla2xxx_tpg_store_enable(
1056         struct se_portal_group *se_tpg,
1057         const char *page,
1058         size_t count)
1059 {
1060         struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
1061         struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
1062                         struct tcm_qla2xxx_lport, lport_wwn);
1063         struct scsi_qla_host *vha = lport->qla_vha;
1064         struct qla_hw_data *ha = vha->hw;
1065         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1066                         struct tcm_qla2xxx_tpg, se_tpg);
1067         unsigned long op;
1068         int rc;
1069
1070         rc = kstrtoul(page, 0, &op);
1071         if (rc < 0) {
1072                 pr_err("kstrtoul() returned %d\n", rc);
1073                 return -EINVAL;
1074         }
1075         if ((op != 1) && (op != 0)) {
1076                 pr_err("Illegal value for tpg_enable: %lu\n", op);
1077                 return -EINVAL;
1078         }
1079
1080         if (op) {
1081                 atomic_set(&tpg->lport_tpg_enabled, 1);
1082                 qlt_enable_vha(vha);
1083         } else {
1084                 if (!ha->tgt.qla_tgt) {
1085                         pr_err("truct qla_hw_data *ha->tgt.qla_tgt is NULL\n");
1086                         return -ENODEV;
1087                 }
1088                 atomic_set(&tpg->lport_tpg_enabled, 0);
1089                 qlt_stop_phase1(ha->tgt.qla_tgt);
1090         }
1091
1092         return count;
1093 }
1094
1095 TF_TPG_BASE_ATTR(tcm_qla2xxx, enable, S_IRUGO | S_IWUSR);
1096
1097 static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = {
1098         &tcm_qla2xxx_tpg_enable.attr,
1099         NULL,
1100 };
1101
1102 static struct se_portal_group *tcm_qla2xxx_make_tpg(
1103         struct se_wwn *wwn,
1104         struct config_group *group,
1105         const char *name)
1106 {
1107         struct tcm_qla2xxx_lport *lport = container_of(wwn,
1108                         struct tcm_qla2xxx_lport, lport_wwn);
1109         struct tcm_qla2xxx_tpg *tpg;
1110         unsigned long tpgt;
1111         int ret;
1112
1113         if (strstr(name, "tpgt_") != name)
1114                 return ERR_PTR(-EINVAL);
1115         if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
1116                 return ERR_PTR(-EINVAL);
1117
1118         if (!lport->qla_npiv_vp && (tpgt != 1)) {
1119                 pr_err("In non NPIV mode, a single TPG=1 is used for HW port mappings\n");
1120                 return ERR_PTR(-ENOSYS);
1121         }
1122
1123         tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
1124         if (!tpg) {
1125                 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1126                 return ERR_PTR(-ENOMEM);
1127         }
1128         tpg->lport = lport;
1129         tpg->lport_tpgt = tpgt;
1130         /*
1131          * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
1132          * NodeACLs
1133          */
1134         QLA_TPG_ATTRIB(tpg)->generate_node_acls = 1;
1135         QLA_TPG_ATTRIB(tpg)->demo_mode_write_protect = 1;
1136         QLA_TPG_ATTRIB(tpg)->cache_dynamic_acls = 1;
1137
1138         ret = core_tpg_register(&tcm_qla2xxx_fabric_configfs->tf_ops, wwn,
1139                                 &tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL);
1140         if (ret < 0) {
1141                 kfree(tpg);
1142                 return NULL;
1143         }
1144         /*
1145          * Setup local TPG=1 pointer for non NPIV mode.
1146          */
1147         if (lport->qla_npiv_vp == NULL)
1148                 lport->tpg_1 = tpg;
1149
1150         return &tpg->se_tpg;
1151 }
1152
1153 static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg)
1154 {
1155         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1156                         struct tcm_qla2xxx_tpg, se_tpg);
1157         struct tcm_qla2xxx_lport *lport = tpg->lport;
1158         struct scsi_qla_host *vha = lport->qla_vha;
1159         struct qla_hw_data *ha = vha->hw;
1160         /*
1161          * Call into qla2x_target.c LLD logic to shutdown the active
1162          * FC Nexuses and disable target mode operation for this qla_hw_data
1163          */
1164         if (ha->tgt.qla_tgt && !ha->tgt.qla_tgt->tgt_stop)
1165                 qlt_stop_phase1(ha->tgt.qla_tgt);
1166
1167         core_tpg_deregister(se_tpg);
1168         /*
1169          * Clear local TPG=1 pointer for non NPIV mode.
1170          */
1171         if (lport->qla_npiv_vp == NULL)
1172                 lport->tpg_1 = NULL;
1173
1174         kfree(tpg);
1175 }
1176
1177 static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg(
1178         struct se_wwn *wwn,
1179         struct config_group *group,
1180         const char *name)
1181 {
1182         struct tcm_qla2xxx_lport *lport = container_of(wwn,
1183                         struct tcm_qla2xxx_lport, lport_wwn);
1184         struct tcm_qla2xxx_tpg *tpg;
1185         unsigned long tpgt;
1186         int ret;
1187
1188         if (strstr(name, "tpgt_") != name)
1189                 return ERR_PTR(-EINVAL);
1190         if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
1191                 return ERR_PTR(-EINVAL);
1192
1193         tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
1194         if (!tpg) {
1195                 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1196                 return ERR_PTR(-ENOMEM);
1197         }
1198         tpg->lport = lport;
1199         tpg->lport_tpgt = tpgt;
1200
1201         ret = core_tpg_register(&tcm_qla2xxx_npiv_fabric_configfs->tf_ops, wwn,
1202                                 &tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL);
1203         if (ret < 0) {
1204                 kfree(tpg);
1205                 return NULL;
1206         }
1207         return &tpg->se_tpg;
1208 }
1209
1210 /*
1211  * Expected to be called with struct qla_hw_data->hardware_lock held
1212  */
1213 static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_s_id(
1214         scsi_qla_host_t *vha,
1215         const uint8_t *s_id)
1216 {
1217         struct qla_hw_data *ha = vha->hw;
1218         struct tcm_qla2xxx_lport *lport;
1219         struct se_node_acl *se_nacl;
1220         struct tcm_qla2xxx_nacl *nacl;
1221         u32 key;
1222
1223         lport = ha->tgt.target_lport_ptr;
1224         if (!lport) {
1225                 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1226                 dump_stack();
1227                 return NULL;
1228         }
1229
1230         key = (((unsigned long)s_id[0] << 16) |
1231                ((unsigned long)s_id[1] << 8) |
1232                (unsigned long)s_id[2]);
1233         pr_debug("find_sess_by_s_id: 0x%06x\n", key);
1234
1235         se_nacl = btree_lookup32(&lport->lport_fcport_map, key);
1236         if (!se_nacl) {
1237                 pr_debug("Unable to locate s_id: 0x%06x\n", key);
1238                 return NULL;
1239         }
1240         pr_debug("find_sess_by_s_id: located se_nacl: %p, initiatorname: %s\n",
1241             se_nacl, se_nacl->initiatorname);
1242
1243         nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1244         if (!nacl->qla_tgt_sess) {
1245                 pr_err("Unable to locate struct qla_tgt_sess\n");
1246                 return NULL;
1247         }
1248
1249         return nacl->qla_tgt_sess;
1250 }
1251
1252 /*
1253  * Expected to be called with struct qla_hw_data->hardware_lock held
1254  */
1255 static void tcm_qla2xxx_set_sess_by_s_id(
1256         struct tcm_qla2xxx_lport *lport,
1257         struct se_node_acl *new_se_nacl,
1258         struct tcm_qla2xxx_nacl *nacl,
1259         struct se_session *se_sess,
1260         struct qla_tgt_sess *qla_tgt_sess,
1261         uint8_t *s_id)
1262 {
1263         u32 key;
1264         void *slot;
1265         int rc;
1266
1267         key = (((unsigned long)s_id[0] << 16) |
1268                ((unsigned long)s_id[1] << 8) |
1269                (unsigned long)s_id[2]);
1270         pr_debug("set_sess_by_s_id: %06x\n", key);
1271
1272         slot = btree_lookup32(&lport->lport_fcport_map, key);
1273         if (!slot) {
1274                 if (new_se_nacl) {
1275                         pr_debug("Setting up new fc_port entry to new_se_nacl\n");
1276                         nacl->nport_id = key;
1277                         rc = btree_insert32(&lport->lport_fcport_map, key,
1278                                         new_se_nacl, GFP_ATOMIC);
1279                         if (rc)
1280                                 printk(KERN_ERR "Unable to insert s_id into fcport_map: %06x\n",
1281                                     (int)key);
1282                 } else {
1283                         pr_debug("Wiping nonexisting fc_port entry\n");
1284                 }
1285
1286                 qla_tgt_sess->se_sess = se_sess;
1287                 nacl->qla_tgt_sess = qla_tgt_sess;
1288                 return;
1289         }
1290
1291         if (nacl->qla_tgt_sess) {
1292                 if (new_se_nacl == NULL) {
1293                         pr_debug("Clearing existing nacl->qla_tgt_sess and fc_port entry\n");
1294                         btree_remove32(&lport->lport_fcport_map, key);
1295                         nacl->qla_tgt_sess = NULL;
1296                         return;
1297                 }
1298                 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_port entry\n");
1299                 btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1300                 qla_tgt_sess->se_sess = se_sess;
1301                 nacl->qla_tgt_sess = qla_tgt_sess;
1302                 return;
1303         }
1304
1305         if (new_se_nacl == NULL) {
1306                 pr_debug("Clearing existing fc_port entry\n");
1307                 btree_remove32(&lport->lport_fcport_map, key);
1308                 return;
1309         }
1310
1311         pr_debug("Replacing existing fc_port entry w/o active nacl->qla_tgt_sess\n");
1312         btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1313         qla_tgt_sess->se_sess = se_sess;
1314         nacl->qla_tgt_sess = qla_tgt_sess;
1315
1316         pr_debug("Setup nacl->qla_tgt_sess %p by s_id for se_nacl: %p, initiatorname: %s\n",
1317             nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname);
1318 }
1319
1320 /*
1321  * Expected to be called with struct qla_hw_data->hardware_lock held
1322  */
1323 static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_loop_id(
1324         scsi_qla_host_t *vha,
1325         const uint16_t loop_id)
1326 {
1327         struct qla_hw_data *ha = vha->hw;
1328         struct tcm_qla2xxx_lport *lport;
1329         struct se_node_acl *se_nacl;
1330         struct tcm_qla2xxx_nacl *nacl;
1331         struct tcm_qla2xxx_fc_loopid *fc_loopid;
1332
1333         lport = ha->tgt.target_lport_ptr;
1334         if (!lport) {
1335                 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1336                 dump_stack();
1337                 return NULL;
1338         }
1339
1340         pr_debug("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1341
1342         fc_loopid = lport->lport_loopid_map + loop_id;
1343         se_nacl = fc_loopid->se_nacl;
1344         if (!se_nacl) {
1345                 pr_debug("Unable to locate se_nacl by loop_id: 0x%04x\n",
1346                     loop_id);
1347                 return NULL;
1348         }
1349
1350         nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1351
1352         if (!nacl->qla_tgt_sess) {
1353                 pr_err("Unable to locate struct qla_tgt_sess\n");
1354                 return NULL;
1355         }
1356
1357         return nacl->qla_tgt_sess;
1358 }
1359
1360 /*
1361  * Expected to be called with struct qla_hw_data->hardware_lock held
1362  */
1363 static void tcm_qla2xxx_set_sess_by_loop_id(
1364         struct tcm_qla2xxx_lport *lport,
1365         struct se_node_acl *new_se_nacl,
1366         struct tcm_qla2xxx_nacl *nacl,
1367         struct se_session *se_sess,
1368         struct qla_tgt_sess *qla_tgt_sess,
1369         uint16_t loop_id)
1370 {
1371         struct se_node_acl *saved_nacl;
1372         struct tcm_qla2xxx_fc_loopid *fc_loopid;
1373
1374         pr_debug("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1375
1376         fc_loopid = &((struct tcm_qla2xxx_fc_loopid *)
1377                         lport->lport_loopid_map)[loop_id];
1378
1379         saved_nacl = fc_loopid->se_nacl;
1380         if (!saved_nacl) {
1381                 pr_debug("Setting up new fc_loopid->se_nacl to new_se_nacl\n");
1382                 fc_loopid->se_nacl = new_se_nacl;
1383                 if (qla_tgt_sess->se_sess != se_sess)
1384                         qla_tgt_sess->se_sess = se_sess;
1385                 if (nacl->qla_tgt_sess != qla_tgt_sess)
1386                         nacl->qla_tgt_sess = qla_tgt_sess;
1387                 return;
1388         }
1389
1390         if (nacl->qla_tgt_sess) {
1391                 if (new_se_nacl == NULL) {
1392                         pr_debug("Clearing nacl->qla_tgt_sess and fc_loopid->se_nacl\n");
1393                         fc_loopid->se_nacl = NULL;
1394                         nacl->qla_tgt_sess = NULL;
1395                         return;
1396                 }
1397
1398                 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_loopid->se_nacl\n");
1399                 fc_loopid->se_nacl = new_se_nacl;
1400                 if (qla_tgt_sess->se_sess != se_sess)
1401                         qla_tgt_sess->se_sess = se_sess;
1402                 if (nacl->qla_tgt_sess != qla_tgt_sess)
1403                         nacl->qla_tgt_sess = qla_tgt_sess;
1404                 return;
1405         }
1406
1407         if (new_se_nacl == NULL) {
1408                 pr_debug("Clearing fc_loopid->se_nacl\n");
1409                 fc_loopid->se_nacl = NULL;
1410                 return;
1411         }
1412
1413         pr_debug("Replacing existing fc_loopid->se_nacl w/o active nacl->qla_tgt_sess\n");
1414         fc_loopid->se_nacl = new_se_nacl;
1415         if (qla_tgt_sess->se_sess != se_sess)
1416                 qla_tgt_sess->se_sess = se_sess;
1417         if (nacl->qla_tgt_sess != qla_tgt_sess)
1418                 nacl->qla_tgt_sess = qla_tgt_sess;
1419
1420         pr_debug("Setup nacl->qla_tgt_sess %p by loop_id for se_nacl: %p, initiatorname: %s\n",
1421             nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname);
1422 }
1423
1424 /*
1425  * Should always be called with qla_hw_data->hardware_lock held.
1426  */
1427 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *lport,
1428                 struct tcm_qla2xxx_nacl *nacl, struct qla_tgt_sess *sess)
1429 {
1430         struct se_session *se_sess = sess->se_sess;
1431         unsigned char be_sid[3];
1432
1433         be_sid[0] = sess->s_id.b.domain;
1434         be_sid[1] = sess->s_id.b.area;
1435         be_sid[2] = sess->s_id.b.al_pa;
1436
1437         tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess,
1438                                 sess, be_sid);
1439         tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess,
1440                                 sess, sess->loop_id);
1441 }
1442
1443 static void tcm_qla2xxx_free_session(struct qla_tgt_sess *sess)
1444 {
1445         struct qla_tgt *tgt = sess->tgt;
1446         struct qla_hw_data *ha = tgt->ha;
1447         struct se_session *se_sess;
1448         struct se_node_acl *se_nacl;
1449         struct tcm_qla2xxx_lport *lport;
1450         struct tcm_qla2xxx_nacl *nacl;
1451
1452         BUG_ON(in_interrupt());
1453
1454         se_sess = sess->se_sess;
1455         if (!se_sess) {
1456                 pr_err("struct qla_tgt_sess->se_sess is NULL\n");
1457                 dump_stack();
1458                 return;
1459         }
1460         se_nacl = se_sess->se_node_acl;
1461         nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1462
1463         lport = ha->tgt.target_lport_ptr;
1464         if (!lport) {
1465                 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1466                 dump_stack();
1467                 return;
1468         }
1469         target_wait_for_sess_cmds(se_sess, 0);
1470
1471         transport_deregister_session_configfs(sess->se_sess);
1472         transport_deregister_session(sess->se_sess);
1473 }
1474
1475 /*
1476  * Called via qlt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl()
1477  * to locate struct se_node_acl
1478  */
1479 static int tcm_qla2xxx_check_initiator_node_acl(
1480         scsi_qla_host_t *vha,
1481         unsigned char *fc_wwpn,
1482         void *qla_tgt_sess,
1483         uint8_t *s_id,
1484         uint16_t loop_id)
1485 {
1486         struct qla_hw_data *ha = vha->hw;
1487         struct tcm_qla2xxx_lport *lport;
1488         struct tcm_qla2xxx_tpg *tpg;
1489         struct tcm_qla2xxx_nacl *nacl;
1490         struct se_portal_group *se_tpg;
1491         struct se_node_acl *se_nacl;
1492         struct se_session *se_sess;
1493         struct qla_tgt_sess *sess = qla_tgt_sess;
1494         unsigned char port_name[36];
1495         unsigned long flags;
1496
1497         lport = ha->tgt.target_lport_ptr;
1498         if (!lport) {
1499                 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1500                 dump_stack();
1501                 return -EINVAL;
1502         }
1503         /*
1504          * Locate the TPG=1 reference..
1505          */
1506         tpg = lport->tpg_1;
1507         if (!tpg) {
1508                 pr_err("Unable to lcoate struct tcm_qla2xxx_lport->tpg_1\n");
1509                 return -EINVAL;
1510         }
1511         se_tpg = &tpg->se_tpg;
1512
1513         se_sess = transport_init_session();
1514         if (IS_ERR(se_sess)) {
1515                 pr_err("Unable to initialize struct se_session\n");
1516                 return PTR_ERR(se_sess);
1517         }
1518         /*
1519          * Format the FCP Initiator port_name into colon seperated values to
1520          * match the format by tcm_qla2xxx explict ConfigFS NodeACLs.
1521          */
1522         memset(&port_name, 0, 36);
1523         snprintf(port_name, 36, "%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x",
1524                 fc_wwpn[0], fc_wwpn[1], fc_wwpn[2], fc_wwpn[3], fc_wwpn[4],
1525                 fc_wwpn[5], fc_wwpn[6], fc_wwpn[7]);
1526         /*
1527          * Locate our struct se_node_acl either from an explict NodeACL created
1528          * via ConfigFS, or via running in TPG demo mode.
1529          */
1530         se_sess->se_node_acl = core_tpg_check_initiator_node_acl(se_tpg,
1531                                         port_name);
1532         if (!se_sess->se_node_acl) {
1533                 transport_free_session(se_sess);
1534                 return -EINVAL;
1535         }
1536         se_nacl = se_sess->se_node_acl;
1537         nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1538         /*
1539          * And now setup the new se_nacl and session pointers into our HW lport
1540          * mappings for fabric S_ID and LOOP_ID.
1541          */
1542         spin_lock_irqsave(&ha->hardware_lock, flags);
1543         tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl, se_sess,
1544                         qla_tgt_sess, s_id);
1545         tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl, se_sess,
1546                         qla_tgt_sess, loop_id);
1547         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1548         /*
1549          * Finally register the new FC Nexus with TCM
1550          */
1551         __transport_register_session(se_nacl->se_tpg, se_nacl, se_sess, sess);
1552
1553         return 0;
1554 }
1555
1556 /*
1557  * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path.
1558  */
1559 static struct qla_tgt_func_tmpl tcm_qla2xxx_template = {
1560         .handle_cmd             = tcm_qla2xxx_handle_cmd,
1561         .handle_data            = tcm_qla2xxx_handle_data,
1562         .handle_tmr             = tcm_qla2xxx_handle_tmr,
1563         .free_cmd               = tcm_qla2xxx_free_cmd,
1564         .free_mcmd              = tcm_qla2xxx_free_mcmd,
1565         .free_session           = tcm_qla2xxx_free_session,
1566         .check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl,
1567         .find_sess_by_s_id      = tcm_qla2xxx_find_sess_by_s_id,
1568         .find_sess_by_loop_id   = tcm_qla2xxx_find_sess_by_loop_id,
1569         .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map,
1570         .put_sess               = tcm_qla2xxx_put_sess,
1571         .shutdown_sess          = tcm_qla2xxx_shutdown_sess,
1572 };
1573
1574 static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport)
1575 {
1576         int rc;
1577
1578         rc = btree_init32(&lport->lport_fcport_map);
1579         if (rc) {
1580                 pr_err("Unable to initialize lport->lport_fcport_map btree\n");
1581                 return rc;
1582         }
1583
1584         lport->lport_loopid_map = vmalloc(sizeof(struct tcm_qla2xxx_fc_loopid) *
1585                                 65536);
1586         if (!lport->lport_loopid_map) {
1587                 pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n",
1588                     sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1589                 btree_destroy32(&lport->lport_fcport_map);
1590                 return -ENOMEM;
1591         }
1592         memset(lport->lport_loopid_map, 0, sizeof(struct tcm_qla2xxx_fc_loopid)
1593                * 65536);
1594         pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n",
1595                sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1596         return 0;
1597 }
1598
1599 static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha)
1600 {
1601         struct qla_hw_data *ha = vha->hw;
1602         struct tcm_qla2xxx_lport *lport;
1603         /*
1604          * Setup local pointer to vha, NPIV VP pointer (if present) and
1605          * vha->tcm_lport pointer
1606          */
1607         lport = (struct tcm_qla2xxx_lport *)ha->tgt.target_lport_ptr;
1608         lport->qla_vha = vha;
1609
1610         return 0;
1611 }
1612
1613 static struct se_wwn *tcm_qla2xxx_make_lport(
1614         struct target_fabric_configfs *tf,
1615         struct config_group *group,
1616         const char *name)
1617 {
1618         struct tcm_qla2xxx_lport *lport;
1619         u64 wwpn;
1620         int ret = -ENODEV;
1621
1622         if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0)
1623                 return ERR_PTR(-EINVAL);
1624
1625         lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1626         if (!lport) {
1627                 pr_err("Unable to allocate struct tcm_qla2xxx_lport\n");
1628                 return ERR_PTR(-ENOMEM);
1629         }
1630         lport->lport_wwpn = wwpn;
1631         tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN,
1632                                 wwpn);
1633
1634         ret = tcm_qla2xxx_init_lport(lport);
1635         if (ret != 0)
1636                 goto out;
1637
1638         ret = qlt_lport_register(&tcm_qla2xxx_template, wwpn,
1639                                 tcm_qla2xxx_lport_register_cb, lport);
1640         if (ret != 0)
1641                 goto out_lport;
1642
1643         return &lport->lport_wwn;
1644 out_lport:
1645         vfree(lport->lport_loopid_map);
1646         btree_destroy32(&lport->lport_fcport_map);
1647 out:
1648         kfree(lport);
1649         return ERR_PTR(ret);
1650 }
1651
1652 static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn)
1653 {
1654         struct tcm_qla2xxx_lport *lport = container_of(wwn,
1655                         struct tcm_qla2xxx_lport, lport_wwn);
1656         struct scsi_qla_host *vha = lport->qla_vha;
1657         struct qla_hw_data *ha = vha->hw;
1658         struct se_node_acl *node;
1659         u32 key = 0;
1660
1661         /*
1662          * Call into qla2x_target.c LLD logic to complete the
1663          * shutdown of struct qla_tgt after the call to
1664          * qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above..
1665          */
1666         if (ha->tgt.qla_tgt && !ha->tgt.qla_tgt->tgt_stopped)
1667                 qlt_stop_phase2(ha->tgt.qla_tgt);
1668
1669         qlt_lport_deregister(vha);
1670
1671         vfree(lport->lport_loopid_map);
1672         btree_for_each_safe32(&lport->lport_fcport_map, key, node)
1673                 btree_remove32(&lport->lport_fcport_map, key);
1674         btree_destroy32(&lport->lport_fcport_map);
1675         kfree(lport);
1676 }
1677
1678 static struct se_wwn *tcm_qla2xxx_npiv_make_lport(
1679         struct target_fabric_configfs *tf,
1680         struct config_group *group,
1681         const char *name)
1682 {
1683         struct tcm_qla2xxx_lport *lport;
1684         u64 npiv_wwpn, npiv_wwnn;
1685         int ret;
1686
1687         if (tcm_qla2xxx_npiv_parse_wwn(name, strlen(name)+1,
1688                                 &npiv_wwpn, &npiv_wwnn) < 0)
1689                 return ERR_PTR(-EINVAL);
1690
1691         lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1692         if (!lport) {
1693                 pr_err("Unable to allocate struct tcm_qla2xxx_lport for NPIV\n");
1694                 return ERR_PTR(-ENOMEM);
1695         }
1696         lport->lport_npiv_wwpn = npiv_wwpn;
1697         lport->lport_npiv_wwnn = npiv_wwnn;
1698         tcm_qla2xxx_npiv_format_wwn(&lport->lport_npiv_name[0],
1699                         TCM_QLA2XXX_NAMELEN, npiv_wwpn, npiv_wwnn);
1700
1701 /* FIXME: tcm_qla2xxx_npiv_make_lport */
1702         ret = -ENOSYS;
1703         if (ret != 0)
1704                 goto out;
1705
1706         return &lport->lport_wwn;
1707 out:
1708         kfree(lport);
1709         return ERR_PTR(ret);
1710 }
1711
1712 static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn)
1713 {
1714         struct tcm_qla2xxx_lport *lport = container_of(wwn,
1715                         struct tcm_qla2xxx_lport, lport_wwn);
1716         struct scsi_qla_host *vha = lport->qla_vha;
1717         struct Scsi_Host *sh = vha->host;
1718         /*
1719          * Notify libfc that we want to release the lport->npiv_vport
1720          */
1721         fc_vport_terminate(lport->npiv_vport);
1722
1723         scsi_host_put(sh);
1724         kfree(lport);
1725 }
1726
1727
1728 static ssize_t tcm_qla2xxx_wwn_show_attr_version(
1729         struct target_fabric_configfs *tf,
1730         char *page)
1731 {
1732         return sprintf(page,
1733             "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s on "
1734             UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname,
1735             utsname()->machine);
1736 }
1737
1738 TF_WWN_ATTR_RO(tcm_qla2xxx, version);
1739
1740 static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = {
1741         &tcm_qla2xxx_wwn_version.attr,
1742         NULL,
1743 };
1744
1745 static struct target_core_fabric_ops tcm_qla2xxx_ops = {
1746         .get_fabric_name                = tcm_qla2xxx_get_fabric_name,
1747         .get_fabric_proto_ident         = tcm_qla2xxx_get_fabric_proto_ident,
1748         .tpg_get_wwn                    = tcm_qla2xxx_get_fabric_wwn,
1749         .tpg_get_tag                    = tcm_qla2xxx_get_tag,
1750         .tpg_get_default_depth          = tcm_qla2xxx_get_default_depth,
1751         .tpg_get_pr_transport_id        = tcm_qla2xxx_get_pr_transport_id,
1752         .tpg_get_pr_transport_id_len    = tcm_qla2xxx_get_pr_transport_id_len,
1753         .tpg_parse_pr_out_transport_id  = tcm_qla2xxx_parse_pr_out_transport_id,
1754         .tpg_check_demo_mode            = tcm_qla2xxx_check_demo_mode,
1755         .tpg_check_demo_mode_cache      = tcm_qla2xxx_check_demo_mode_cache,
1756         .tpg_check_demo_mode_write_protect =
1757                                         tcm_qla2xxx_check_demo_write_protect,
1758         .tpg_check_prod_mode_write_protect =
1759                                         tcm_qla2xxx_check_prod_write_protect,
1760         .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_true,
1761         .tpg_alloc_fabric_acl           = tcm_qla2xxx_alloc_fabric_acl,
1762         .tpg_release_fabric_acl         = tcm_qla2xxx_release_fabric_acl,
1763         .tpg_get_inst_index             = tcm_qla2xxx_tpg_get_inst_index,
1764         .new_cmd_map                    = NULL,
1765         .check_stop_free                = tcm_qla2xxx_check_stop_free,
1766         .release_cmd                    = tcm_qla2xxx_release_cmd,
1767         .put_session                    = tcm_qla2xxx_put_session,
1768         .shutdown_session               = tcm_qla2xxx_shutdown_session,
1769         .close_session                  = tcm_qla2xxx_close_session,
1770         .sess_get_index                 = tcm_qla2xxx_sess_get_index,
1771         .sess_get_initiator_sid         = NULL,
1772         .write_pending                  = tcm_qla2xxx_write_pending,
1773         .write_pending_status           = tcm_qla2xxx_write_pending_status,
1774         .set_default_node_attributes    = tcm_qla2xxx_set_default_node_attrs,
1775         .get_task_tag                   = tcm_qla2xxx_get_task_tag,
1776         .get_cmd_state                  = tcm_qla2xxx_get_cmd_state,
1777         .queue_data_in                  = tcm_qla2xxx_queue_data_in,
1778         .queue_status                   = tcm_qla2xxx_queue_status,
1779         .queue_tm_rsp                   = tcm_qla2xxx_queue_tm_rsp,
1780         .get_fabric_sense_len           = tcm_qla2xxx_get_fabric_sense_len,
1781         .set_fabric_sense_len           = tcm_qla2xxx_set_fabric_sense_len,
1782         /*
1783          * Setup function pointers for generic logic in
1784          * target_core_fabric_configfs.c
1785          */
1786         .fabric_make_wwn                = tcm_qla2xxx_make_lport,
1787         .fabric_drop_wwn                = tcm_qla2xxx_drop_lport,
1788         .fabric_make_tpg                = tcm_qla2xxx_make_tpg,
1789         .fabric_drop_tpg                = tcm_qla2xxx_drop_tpg,
1790         .fabric_post_link               = NULL,
1791         .fabric_pre_unlink              = NULL,
1792         .fabric_make_np                 = NULL,
1793         .fabric_drop_np                 = NULL,
1794         .fabric_make_nodeacl            = tcm_qla2xxx_make_nodeacl,
1795         .fabric_drop_nodeacl            = tcm_qla2xxx_drop_nodeacl,
1796 };
1797
1798 static struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = {
1799         .get_fabric_name                = tcm_qla2xxx_npiv_get_fabric_name,
1800         .get_fabric_proto_ident         = tcm_qla2xxx_get_fabric_proto_ident,
1801         .tpg_get_wwn                    = tcm_qla2xxx_npiv_get_fabric_wwn,
1802         .tpg_get_tag                    = tcm_qla2xxx_get_tag,
1803         .tpg_get_default_depth          = tcm_qla2xxx_get_default_depth,
1804         .tpg_get_pr_transport_id        = tcm_qla2xxx_get_pr_transport_id,
1805         .tpg_get_pr_transport_id_len    = tcm_qla2xxx_get_pr_transport_id_len,
1806         .tpg_parse_pr_out_transport_id  = tcm_qla2xxx_parse_pr_out_transport_id,
1807         .tpg_check_demo_mode            = tcm_qla2xxx_check_false,
1808         .tpg_check_demo_mode_cache      = tcm_qla2xxx_check_true,
1809         .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_true,
1810         .tpg_check_prod_mode_write_protect = tcm_qla2xxx_check_false,
1811         .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_true,
1812         .tpg_alloc_fabric_acl           = tcm_qla2xxx_alloc_fabric_acl,
1813         .tpg_release_fabric_acl         = tcm_qla2xxx_release_fabric_acl,
1814         .tpg_get_inst_index             = tcm_qla2xxx_tpg_get_inst_index,
1815         .release_cmd                    = tcm_qla2xxx_release_cmd,
1816         .put_session                    = tcm_qla2xxx_put_session,
1817         .shutdown_session               = tcm_qla2xxx_shutdown_session,
1818         .close_session                  = tcm_qla2xxx_close_session,
1819         .sess_get_index                 = tcm_qla2xxx_sess_get_index,
1820         .sess_get_initiator_sid         = NULL,
1821         .write_pending                  = tcm_qla2xxx_write_pending,
1822         .write_pending_status           = tcm_qla2xxx_write_pending_status,
1823         .set_default_node_attributes    = tcm_qla2xxx_set_default_node_attrs,
1824         .get_task_tag                   = tcm_qla2xxx_get_task_tag,
1825         .get_cmd_state                  = tcm_qla2xxx_get_cmd_state,
1826         .queue_data_in                  = tcm_qla2xxx_queue_data_in,
1827         .queue_status                   = tcm_qla2xxx_queue_status,
1828         .queue_tm_rsp                   = tcm_qla2xxx_queue_tm_rsp,
1829         .get_fabric_sense_len           = tcm_qla2xxx_get_fabric_sense_len,
1830         .set_fabric_sense_len           = tcm_qla2xxx_set_fabric_sense_len,
1831         /*
1832          * Setup function pointers for generic logic in
1833          * target_core_fabric_configfs.c
1834          */
1835         .fabric_make_wwn                = tcm_qla2xxx_npiv_make_lport,
1836         .fabric_drop_wwn                = tcm_qla2xxx_npiv_drop_lport,
1837         .fabric_make_tpg                = tcm_qla2xxx_npiv_make_tpg,
1838         .fabric_drop_tpg                = tcm_qla2xxx_drop_tpg,
1839         .fabric_post_link               = NULL,
1840         .fabric_pre_unlink              = NULL,
1841         .fabric_make_np                 = NULL,
1842         .fabric_drop_np                 = NULL,
1843         .fabric_make_nodeacl            = tcm_qla2xxx_make_nodeacl,
1844         .fabric_drop_nodeacl            = tcm_qla2xxx_drop_nodeacl,
1845 };
1846
1847 static int tcm_qla2xxx_register_configfs(void)
1848 {
1849         struct target_fabric_configfs *fabric, *npiv_fabric;
1850         int ret;
1851
1852         pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on "
1853             UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname,
1854             utsname()->machine);
1855         /*
1856          * Register the top level struct config_item_type with TCM core
1857          */
1858         fabric = target_fabric_configfs_init(THIS_MODULE, "qla2xxx");
1859         if (IS_ERR(fabric)) {
1860                 pr_err("target_fabric_configfs_init() failed\n");
1861                 return PTR_ERR(fabric);
1862         }
1863         /*
1864          * Setup fabric->tf_ops from our local tcm_qla2xxx_ops
1865          */
1866         fabric->tf_ops = tcm_qla2xxx_ops;
1867         /*
1868          * Setup default attribute lists for various fabric->tf_cit_tmpl
1869          */
1870         TF_CIT_TMPL(fabric)->tfc_wwn_cit.ct_attrs = tcm_qla2xxx_wwn_attrs;
1871         TF_CIT_TMPL(fabric)->tfc_tpg_base_cit.ct_attrs = tcm_qla2xxx_tpg_attrs;
1872         TF_CIT_TMPL(fabric)->tfc_tpg_attrib_cit.ct_attrs =
1873                                                 tcm_qla2xxx_tpg_attrib_attrs;
1874         TF_CIT_TMPL(fabric)->tfc_tpg_param_cit.ct_attrs = NULL;
1875         TF_CIT_TMPL(fabric)->tfc_tpg_np_base_cit.ct_attrs = NULL;
1876         TF_CIT_TMPL(fabric)->tfc_tpg_nacl_base_cit.ct_attrs = NULL;
1877         TF_CIT_TMPL(fabric)->tfc_tpg_nacl_attrib_cit.ct_attrs = NULL;
1878         TF_CIT_TMPL(fabric)->tfc_tpg_nacl_auth_cit.ct_attrs = NULL;
1879         TF_CIT_TMPL(fabric)->tfc_tpg_nacl_param_cit.ct_attrs = NULL;
1880         /*
1881          * Register the fabric for use within TCM
1882          */
1883         ret = target_fabric_configfs_register(fabric);
1884         if (ret < 0) {
1885                 pr_err("target_fabric_configfs_register() failed for TCM_QLA2XXX\n");
1886                 return ret;
1887         }
1888         /*
1889          * Setup our local pointer to *fabric
1890          */
1891         tcm_qla2xxx_fabric_configfs = fabric;
1892         pr_debug("TCM_QLA2XXX[0] - Set fabric -> tcm_qla2xxx_fabric_configfs\n");
1893
1894         /*
1895          * Register the top level struct config_item_type for NPIV with TCM core
1896          */
1897         npiv_fabric = target_fabric_configfs_init(THIS_MODULE, "qla2xxx_npiv");
1898         if (IS_ERR(npiv_fabric)) {
1899                 pr_err("target_fabric_configfs_init() failed\n");
1900                 ret = PTR_ERR(npiv_fabric);
1901                 goto out_fabric;
1902         }
1903         /*
1904          * Setup fabric->tf_ops from our local tcm_qla2xxx_npiv_ops
1905          */
1906         npiv_fabric->tf_ops = tcm_qla2xxx_npiv_ops;
1907         /*
1908          * Setup default attribute lists for various npiv_fabric->tf_cit_tmpl
1909          */
1910         TF_CIT_TMPL(npiv_fabric)->tfc_wwn_cit.ct_attrs = tcm_qla2xxx_wwn_attrs;
1911         TF_CIT_TMPL(npiv_fabric)->tfc_tpg_base_cit.ct_attrs = NULL;
1912         TF_CIT_TMPL(npiv_fabric)->tfc_tpg_attrib_cit.ct_attrs = NULL;
1913         TF_CIT_TMPL(npiv_fabric)->tfc_tpg_param_cit.ct_attrs = NULL;
1914         TF_CIT_TMPL(npiv_fabric)->tfc_tpg_np_base_cit.ct_attrs = NULL;
1915         TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_base_cit.ct_attrs = NULL;
1916         TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_attrib_cit.ct_attrs = NULL;
1917         TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_auth_cit.ct_attrs = NULL;
1918         TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_param_cit.ct_attrs = NULL;
1919         /*
1920          * Register the npiv_fabric for use within TCM
1921          */
1922         ret = target_fabric_configfs_register(npiv_fabric);
1923         if (ret < 0) {
1924                 pr_err("target_fabric_configfs_register() failed for TCM_QLA2XXX\n");
1925                 goto out_fabric;
1926         }
1927         /*
1928          * Setup our local pointer to *npiv_fabric
1929          */
1930         tcm_qla2xxx_npiv_fabric_configfs = npiv_fabric;
1931         pr_debug("TCM_QLA2XXX[0] - Set fabric -> tcm_qla2xxx_npiv_fabric_configfs\n");
1932
1933         tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free",
1934                                                 WQ_MEM_RECLAIM, 0);
1935         if (!tcm_qla2xxx_free_wq) {
1936                 ret = -ENOMEM;
1937                 goto out_fabric_npiv;
1938         }
1939
1940         tcm_qla2xxx_cmd_wq = alloc_workqueue("tcm_qla2xxx_cmd", 0, 0);
1941         if (!tcm_qla2xxx_cmd_wq) {
1942                 ret = -ENOMEM;
1943                 goto out_free_wq;
1944         }
1945
1946         return 0;
1947
1948 out_free_wq:
1949         destroy_workqueue(tcm_qla2xxx_free_wq);
1950 out_fabric_npiv:
1951         target_fabric_configfs_deregister(tcm_qla2xxx_npiv_fabric_configfs);
1952 out_fabric:
1953         target_fabric_configfs_deregister(tcm_qla2xxx_fabric_configfs);
1954         return ret;
1955 }
1956
1957 static void tcm_qla2xxx_deregister_configfs(void)
1958 {
1959         destroy_workqueue(tcm_qla2xxx_cmd_wq);
1960         destroy_workqueue(tcm_qla2xxx_free_wq);
1961
1962         target_fabric_configfs_deregister(tcm_qla2xxx_fabric_configfs);
1963         tcm_qla2xxx_fabric_configfs = NULL;
1964         pr_debug("TCM_QLA2XXX[0] - Cleared tcm_qla2xxx_fabric_configfs\n");
1965
1966         target_fabric_configfs_deregister(tcm_qla2xxx_npiv_fabric_configfs);
1967         tcm_qla2xxx_npiv_fabric_configfs = NULL;
1968         pr_debug("TCM_QLA2XXX[0] - Cleared tcm_qla2xxx_npiv_fabric_configfs\n");
1969 }
1970
1971 static int __init tcm_qla2xxx_init(void)
1972 {
1973         int ret;
1974
1975         ret = tcm_qla2xxx_register_configfs();
1976         if (ret < 0)
1977                 return ret;
1978
1979         return 0;
1980 }
1981
1982 static void __exit tcm_qla2xxx_exit(void)
1983 {
1984         tcm_qla2xxx_deregister_configfs();
1985 }
1986
1987 MODULE_DESCRIPTION("TCM QLA2XXX series NPIV enabled fabric driver");
1988 MODULE_LICENSE("GPL");
1989 module_init(tcm_qla2xxx_init);
1990 module_exit(tcm_qla2xxx_exit);