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

   1 /*******************************************************************************
   2  * This file contains tcm implementation using v4 configfs fabric infrastructure
   3  * for QLogic target mode HBAs
   4  *
   5  * (c) Copyright 2010-2013 Datera, Inc.
   6  *
   7  * Author: Nicholas A. Bellinger <nab@daterainc.com>
   8  *
   9  * tcm_qla2xxx_parse_wwn() and tcm_qla2xxx_format_wwn() contains code from
  10  * the TCM_FC / Open-FCoE.org fabric module.
  11  *
  12  * Copyright (c) 2010 Cisco Systems, Inc
  13  *
  14  * This program is free software; you can redistribute it and/or modify
  15  * it under the terms of the GNU General Public License as published by
  16  * the Free Software Foundation; either version 2 of the License, or
  17  * (at your option) any later version.
  18  *
  19  * This program is distributed in the hope that it will be useful,
  20  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22  * GNU General Public License for more details.
  23  ****************************************************************************/
  24
  25
  26 #include <linux/module.h>
  27 #include <linux/moduleparam.h>
  28 #include <generated/utsrelease.h>
  29 #include <linux/utsname.h>
  30 #include <linux/init.h>
  31 #include <linux/list.h>
  32 #include <linux/slab.h>
  33 #include <linux/kthread.h>
  34 #include <linux/types.h>
  35 #include <linux/string.h>
  36 #include <linux/configfs.h>
  37 #include <linux/ctype.h>
  38 #include <asm/unaligned.h>
  39 #include <scsi/scsi.h>
  40 #include <scsi/scsi_host.h>
  41 #include <scsi/scsi_device.h>
  42 #include <scsi/scsi_cmnd.h>
  43 #include <target/target_core_base.h>
  44 #include <target/target_core_fabric.h>
  45 #include <target/target_core_fabric_configfs.h>
  46 #include <target/target_core_configfs.h>
  47 #include <target/configfs_macros.h>
  48
  49 #include "qla_def.h"
  50 #include "qla_target.h"
  51 #include "tcm_qla2xxx.h"
  52
  53 struct workqueue_struct *tcm_qla2xxx_free_wq;
  54 struct workqueue_struct *tcm_qla2xxx_cmd_wq;
  55
  56 /*
  57  * Parse WWN.
  58  * If strict, we require lower-case hex and colon separators to be sure
  59  * the name is the same as what would be generated by ft_format_wwn()
  60  * so the name and wwn are mapped one-to-one.
  61  */
  62 static ssize_t tcm_qla2xxx_parse_wwn(const char *name, u64 *wwn, int strict)
  63 {
  64         const char *cp;
  65         char c;
  66         u32 nibble;
  67         u32 byte = 0;
  68         u32 pos = 0;
  69         u32 err;
  70
  71         *wwn = 0;
  72         for (cp = name; cp < &name[TCM_QLA2XXX_NAMELEN - 1]; cp++) {
  73                 c = *cp;
  74                 if (c == '\n' && cp[1] == '\0')
  75                         continue;
  76                 if (strict && pos++ == 2 && byte++ < 7) {
  77                         pos = 0;
  78                         if (c == ':')
  79                                 continue;
  80                         err = 1;
  81                         goto fail;
  82                 }
  83                 if (c == '\0') {
  84                         err = 2;
  85                         if (strict && byte != 8)
  86                                 goto fail;
  87                         return cp - name;
  88                 }
  89                 err = 3;
  90                 if (isdigit(c))
  91                         nibble = c - '0';
  92                 else if (isxdigit(c) && (islower(c) || !strict))
  93                         nibble = tolower(c) - 'a' + 10;
  94                 else
  95                         goto fail;
  96                 *wwn = (*wwn << 4) | nibble;
  97         }
  98         err = 4;
  99 fail:
 100         pr_debug("err %u len %zu pos %u byte %u\n",
 101                         err, cp - name, pos, byte);
 102         return -1;
 103 }
 104
 105 static ssize_t tcm_qla2xxx_format_wwn(char *buf, size_t len, u64 wwn)
 106 {
 107         u8 b[8];
 108
 109         put_unaligned_be64(wwn, b);
 110         return snprintf(buf, len,
 111                 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x",
 112                 b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7]);
 113 }
 114
 115 static char *tcm_qla2xxx_get_fabric_name(void)
 116 {
 117         return "qla2xxx";
 118 }
 119
 120 /*
 121  * From drivers/scsi/scsi_transport_fc.c:fc_parse_wwn
 122  */
 123 static int tcm_qla2xxx_npiv_extract_wwn(const char *ns, u64 *nm)
 124 {
 125         unsigned int i, j;
 126         u8 wwn[8];
 127
 128         memset(wwn, 0, sizeof(wwn));
 129
 130         /* Validate and store the new name */
 131         for (i = 0, j = 0; i < 16; i++) {
 132                 int value;
 133
 134                 value = hex_to_bin(*ns++);
 135                 if (value >= 0)
 136                         j = (j << 4) | value;
 137                 else
 138                         return -EINVAL;
 139
 140                 if (i % 2) {
 141                         wwn[i/2] = j & 0xff;
 142                         j = 0;
 143                 }
 144         }
 145
 146         *nm = wwn_to_u64(wwn);
 147         return 0;
 148 }
 149
 150 /*
 151  * This parsing logic follows drivers/scsi/scsi_transport_fc.c:
 152  * store_fc_host_vport_create()
 153  */
 154 static int tcm_qla2xxx_npiv_parse_wwn(
 155         const char *name,
 156         size_t count,
 157         u64 *wwpn,
 158         u64 *wwnn)
 159 {
 160         unsigned int cnt = count;
 161         int rc;
 162
 163         *wwpn = 0;
 164         *wwnn = 0;
 165
 166         /* count may include a LF at end of string */
 167         if (name[cnt-1] == '\n' || name[cnt-1] == 0)
 168                 cnt--;
 169
 170         /* validate we have enough characters for WWPN */
 171         if ((cnt != (16+1+16)) || (name[16] != ':'))
 172                 return -EINVAL;
 173
 174         rc = tcm_qla2xxx_npiv_extract_wwn(&name[0], wwpn);
 175         if (rc != 0)
 176                 return rc;
 177
 178         rc = tcm_qla2xxx_npiv_extract_wwn(&name[17], wwnn);
 179         if (rc != 0)
 180                 return rc;
 181
 182         return 0;
 183 }
 184
 185 static char *tcm_qla2xxx_npiv_get_fabric_name(void)
 186 {
 187         return "qla2xxx_npiv";
 188 }
 189
 190 static u8 tcm_qla2xxx_get_fabric_proto_ident(struct se_portal_group *se_tpg)
 191 {
 192         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 193                                 struct tcm_qla2xxx_tpg, se_tpg);
 194         struct tcm_qla2xxx_lport *lport = tpg->lport;
 195         u8 proto_id;
 196
 197         switch (lport->lport_proto_id) {
 198         case SCSI_PROTOCOL_FCP:
 199         default:
 200                 proto_id = fc_get_fabric_proto_ident(se_tpg);
 201                 break;
 202         }
 203
 204         return proto_id;
 205 }
 206
 207 static char *tcm_qla2xxx_get_fabric_wwn(struct se_portal_group *se_tpg)
 208 {
 209         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 210                                 struct tcm_qla2xxx_tpg, se_tpg);
 211         struct tcm_qla2xxx_lport *lport = tpg->lport;
 212
 213         return lport->lport_naa_name;
 214 }
 215
 216 static u16 tcm_qla2xxx_get_tag(struct se_portal_group *se_tpg)
 217 {
 218         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 219                                 struct tcm_qla2xxx_tpg, se_tpg);
 220         return tpg->lport_tpgt;
 221 }
 222
 223 static u32 tcm_qla2xxx_get_default_depth(struct se_portal_group *se_tpg)
 224 {
 225         return 1;
 226 }
 227
 228 static u32 tcm_qla2xxx_get_pr_transport_id(
 229         struct se_portal_group *se_tpg,
 230         struct se_node_acl *se_nacl,
 231         struct t10_pr_registration *pr_reg,
 232         int *format_code,
 233         unsigned char *buf)
 234 {
 235         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 236                                 struct tcm_qla2xxx_tpg, se_tpg);
 237         struct tcm_qla2xxx_lport *lport = tpg->lport;
 238         int ret = 0;
 239
 240         switch (lport->lport_proto_id) {
 241         case SCSI_PROTOCOL_FCP:
 242         default:
 243                 ret = fc_get_pr_transport_id(se_tpg, se_nacl, pr_reg,
 244                                         format_code, buf);
 245                 break;
 246         }
 247
 248         return ret;
 249 }
 250
 251 static u32 tcm_qla2xxx_get_pr_transport_id_len(
 252         struct se_portal_group *se_tpg,
 253         struct se_node_acl *se_nacl,
 254         struct t10_pr_registration *pr_reg,
 255         int *format_code)
 256 {
 257         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 258                                 struct tcm_qla2xxx_tpg, se_tpg);
 259         struct tcm_qla2xxx_lport *lport = tpg->lport;
 260         int ret = 0;
 261
 262         switch (lport->lport_proto_id) {
 263         case SCSI_PROTOCOL_FCP:
 264         default:
 265                 ret = fc_get_pr_transport_id_len(se_tpg, se_nacl, pr_reg,
 266                                         format_code);
 267                 break;
 268         }
 269
 270         return ret;
 271 }
 272
 273 static char *tcm_qla2xxx_parse_pr_out_transport_id(
 274         struct se_portal_group *se_tpg,
 275         const char *buf,
 276         u32 *out_tid_len,
 277         char **port_nexus_ptr)
 278 {
 279         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 280                                 struct tcm_qla2xxx_tpg, se_tpg);
 281         struct tcm_qla2xxx_lport *lport = tpg->lport;
 282         char *tid = NULL;
 283
 284         switch (lport->lport_proto_id) {
 285         case SCSI_PROTOCOL_FCP:
 286         default:
 287                 tid = fc_parse_pr_out_transport_id(se_tpg, buf, out_tid_len,
 288                                         port_nexus_ptr);
 289                 break;
 290         }
 291
 292         return tid;
 293 }
 294
 295 static int tcm_qla2xxx_check_demo_mode(struct se_portal_group *se_tpg)
 296 {
 297         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 298                                 struct tcm_qla2xxx_tpg, se_tpg);
 299
 300         return tpg->tpg_attrib.generate_node_acls;
 301 }
 302
 303 static int tcm_qla2xxx_check_demo_mode_cache(struct se_portal_group *se_tpg)
 304 {
 305         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 306                                 struct tcm_qla2xxx_tpg, se_tpg);
 307
 308         return tpg->tpg_attrib.cache_dynamic_acls;
 309 }
 310
 311 static int tcm_qla2xxx_check_demo_write_protect(struct se_portal_group *se_tpg)
 312 {
 313         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 314                                 struct tcm_qla2xxx_tpg, se_tpg);
 315
 316         return tpg->tpg_attrib.demo_mode_write_protect;
 317 }
 318
 319 static int tcm_qla2xxx_check_prod_write_protect(struct se_portal_group *se_tpg)
 320 {
 321         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 322                                 struct tcm_qla2xxx_tpg, se_tpg);
 323
 324         return tpg->tpg_attrib.prod_mode_write_protect;
 325 }
 326
 327 static int tcm_qla2xxx_check_demo_mode_login_only(struct se_portal_group *se_tpg)
 328 {
 329         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 330                                 struct tcm_qla2xxx_tpg, se_tpg);
 331
 332         return tpg->tpg_attrib.demo_mode_login_only;
 333 }
 334
 335 static struct se_node_acl *tcm_qla2xxx_alloc_fabric_acl(
 336         struct se_portal_group *se_tpg)
 337 {
 338         struct tcm_qla2xxx_nacl *nacl;
 339
 340         nacl = kzalloc(sizeof(struct tcm_qla2xxx_nacl), GFP_KERNEL);
 341         if (!nacl) {
 342                 pr_err("Unable to allocate struct tcm_qla2xxx_nacl\n");
 343                 return NULL;
 344         }
 345
 346         return &nacl->se_node_acl;
 347 }
 348
 349 static void tcm_qla2xxx_release_fabric_acl(
 350         struct se_portal_group *se_tpg,
 351         struct se_node_acl *se_nacl)
 352 {
 353         struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
 354                         struct tcm_qla2xxx_nacl, se_node_acl);
 355         kfree(nacl);
 356 }
 357
 358 static u32 tcm_qla2xxx_tpg_get_inst_index(struct se_portal_group *se_tpg)
 359 {
 360         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 361                                 struct tcm_qla2xxx_tpg, se_tpg);
 362
 363         return tpg->lport_tpgt;
 364 }
 365
 366 static void tcm_qla2xxx_complete_mcmd(struct work_struct *work)
 367 {
 368         struct qla_tgt_mgmt_cmd *mcmd = container_of(work,
 369                         struct qla_tgt_mgmt_cmd, free_work);
 370
 371         transport_generic_free_cmd(&mcmd->se_cmd, 0);
 372 }
 373
 374 /*
 375  * Called from qla_target_template->free_mcmd(), and will call
 376  * tcm_qla2xxx_release_cmd() via normal struct target_core_fabric_ops
 377  * release callback.  qla_hw_data->hardware_lock is expected to be held
 378  */
 379 static void tcm_qla2xxx_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
 380 {
 381         INIT_WORK(&mcmd->free_work, tcm_qla2xxx_complete_mcmd);
 382         queue_work(tcm_qla2xxx_free_wq, &mcmd->free_work);
 383 }
 384
 385 static void tcm_qla2xxx_complete_free(struct work_struct *work)
 386 {
 387         struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
 388
 389         transport_generic_free_cmd(&cmd->se_cmd, 0);
 390 }
 391
 392 /*
 393  * Called from qla_target_template->free_cmd(), and will call
 394  * tcm_qla2xxx_release_cmd via normal struct target_core_fabric_ops
 395  * release callback.  qla_hw_data->hardware_lock is expected to be held
 396  */
 397 static void tcm_qla2xxx_free_cmd(struct qla_tgt_cmd *cmd)
 398 {
 399         INIT_WORK(&cmd->work, tcm_qla2xxx_complete_free);
 400         queue_work(tcm_qla2xxx_free_wq, &cmd->work);
 401 }
 402
 403 /*
 404  * Called from struct target_core_fabric_ops->check_stop_free() context
 405  */
 406 static int tcm_qla2xxx_check_stop_free(struct se_cmd *se_cmd)
 407 {
 408         return target_put_sess_cmd(se_cmd->se_sess, se_cmd);
 409 }
 410
 411 /* tcm_qla2xxx_release_cmd - Callback from TCM Core to release underlying
 412  * fabric descriptor @se_cmd command to release
 413  */
 414 static void tcm_qla2xxx_release_cmd(struct se_cmd *se_cmd)
 415 {
 416         struct qla_tgt_cmd *cmd;
 417
 418         if (se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) {
 419                 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
 420                                 struct qla_tgt_mgmt_cmd, se_cmd);
 421                 qlt_free_mcmd(mcmd);
 422                 return;
 423         }
 424
 425         cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
 426         qlt_free_cmd(cmd);
 427 }
 428
 429 static int tcm_qla2xxx_shutdown_session(struct se_session *se_sess)
 430 {
 431         struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
 432         struct scsi_qla_host *vha;
 433         unsigned long flags;
 434
 435         BUG_ON(!sess);
 436         vha = sess->vha;
 437
 438         spin_lock_irqsave(&vha->hw->hardware_lock, flags);
 439         target_sess_cmd_list_set_waiting(se_sess);
 440         spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
 441
 442         return 1;
 443 }
 444
 445 static void tcm_qla2xxx_close_session(struct se_session *se_sess)
 446 {
 447         struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
 448         struct scsi_qla_host *vha;
 449         unsigned long flags;
 450
 451         BUG_ON(!sess);
 452         vha = sess->vha;
 453
 454         spin_lock_irqsave(&vha->hw->hardware_lock, flags);
 455         qlt_unreg_sess(sess);
 456         spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
 457 }
 458
 459 static u32 tcm_qla2xxx_sess_get_index(struct se_session *se_sess)
 460 {
 461         return 0;
 462 }
 463
 464 static int tcm_qla2xxx_write_pending(struct se_cmd *se_cmd)
 465 {
 466         struct qla_tgt_cmd *cmd = container_of(se_cmd,
 467                                 struct qla_tgt_cmd, se_cmd);
 468
 469         cmd->bufflen = se_cmd->data_length;
 470         cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
 471
 472         cmd->sg_cnt = se_cmd->t_data_nents;
 473         cmd->sg = se_cmd->t_data_sg;
 474
 475         /*
 476          * qla_target.c:qlt_rdy_to_xfer() will call pci_map_sg() to setup
 477          * the SGL mappings into PCIe memory for incoming FCP WRITE data.
 478          */
 479         return qlt_rdy_to_xfer(cmd);
 480 }
 481
 482 static int tcm_qla2xxx_write_pending_status(struct se_cmd *se_cmd)
 483 {
 484         unsigned long flags;
 485         /*
 486          * Check for WRITE_PENDING status to determine if we need to wait for
 487          * CTIO aborts to be posted via hardware in tcm_qla2xxx_handle_data().
 488          */
 489         spin_lock_irqsave(&se_cmd->t_state_lock, flags);
 490         if (se_cmd->t_state == TRANSPORT_WRITE_PENDING ||
 491             se_cmd->t_state == TRANSPORT_COMPLETE_QF_WP) {
 492                 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
 493                 wait_for_completion_timeout(&se_cmd->t_transport_stop_comp,
 494                                                 3000);
 495                 return 0;
 496         }
 497         spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
 498
 499         return 0;
 500 }
 501
 502 static void tcm_qla2xxx_set_default_node_attrs(struct se_node_acl *nacl)
 503 {
 504         return;
 505 }
 506
 507 static u32 tcm_qla2xxx_get_task_tag(struct se_cmd *se_cmd)
 508 {
 509         struct qla_tgt_cmd *cmd = container_of(se_cmd,
 510                                 struct qla_tgt_cmd, se_cmd);
 511
 512         return cmd->tag;
 513 }
 514
 515 static int tcm_qla2xxx_get_cmd_state(struct se_cmd *se_cmd)
 516 {
 517         return 0;
 518 }
 519
 520 /*
 521  * Called from process context in qla_target.c:qlt_do_work() code
 522  */
 523 static int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd,
 524         unsigned char *cdb, uint32_t data_length, int fcp_task_attr,
 525         int data_dir, int bidi)
 526 {
 527         struct se_cmd *se_cmd = &cmd->se_cmd;
 528         struct se_session *se_sess;
 529         struct qla_tgt_sess *sess;
 530         int flags = TARGET_SCF_ACK_KREF;
 531
 532         if (bidi)
 533                 flags |= TARGET_SCF_BIDI_OP;
 534
 535         sess = cmd->sess;
 536         if (!sess) {
 537                 pr_err("Unable to locate struct qla_tgt_sess from qla_tgt_cmd\n");
 538                 return -EINVAL;
 539         }
 540
 541         se_sess = sess->se_sess;
 542         if (!se_sess) {
 543                 pr_err("Unable to locate active struct se_session\n");
 544                 return -EINVAL;
 545         }
 546
 547         return target_submit_cmd(se_cmd, se_sess, cdb, &cmd->sense_buffer[0],
 548                                 cmd->unpacked_lun, data_length, fcp_task_attr,
 549                                 data_dir, flags);
 550 }
 551
 552 static void tcm_qla2xxx_handle_data_work(struct work_struct *work)
 553 {
 554         struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
 555
 556         /*
 557          * Ensure that the complete FCP WRITE payload has been received.
 558          * Otherwise return an exception via CHECK_CONDITION status.
 559          */
 560         if (!cmd->write_data_transferred) {
 561                 /*
 562                  * Check if se_cmd has already been aborted via LUN_RESET, and
 563                  * waiting upon completion in tcm_qla2xxx_write_pending_status()
 564                  */
 565                 if (cmd->se_cmd.transport_state & CMD_T_ABORTED) {
 566                         complete(&cmd->se_cmd.t_transport_stop_comp);
 567                         return;
 568                 }
 569
 570                 transport_generic_request_failure(&cmd->se_cmd,
 571                                                   TCM_CHECK_CONDITION_ABORT_CMD);
 572                 return;
 573         }
 574
 575         return target_execute_cmd(&cmd->se_cmd);
 576 }
 577
 578 /*
 579  * Called from qla_target.c:qlt_do_ctio_completion()
 580  */
 581 static void tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd)
 582 {
 583         INIT_WORK(&cmd->work, tcm_qla2xxx_handle_data_work);
 584         queue_work(tcm_qla2xxx_free_wq, &cmd->work);
 585 }
 586
 587 /*
 588  * Called from qla_target.c:qlt_issue_task_mgmt()
 589  */
 590 static int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *mcmd, uint32_t lun,
 591         uint8_t tmr_func, uint32_t tag)
 592 {
 593         struct qla_tgt_sess *sess = mcmd->sess;
 594         struct se_cmd *se_cmd = &mcmd->se_cmd;
 595
 596         return target_submit_tmr(se_cmd, sess->se_sess, NULL, lun, mcmd,
 597                         tmr_func, GFP_ATOMIC, tag, TARGET_SCF_ACK_KREF);
 598 }
 599
 600 static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd)
 601 {
 602         struct qla_tgt_cmd *cmd = container_of(se_cmd,
 603                                 struct qla_tgt_cmd, se_cmd);
 604
 605         cmd->bufflen = se_cmd->data_length;
 606         cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
 607         cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED);
 608
 609         cmd->sg_cnt = se_cmd->t_data_nents;
 610         cmd->sg = se_cmd->t_data_sg;
 611         cmd->offset = 0;
 612
 613         /*
 614          * Now queue completed DATA_IN the qla2xxx LLD and response ring
 615          */
 616         return qlt_xmit_response(cmd, QLA_TGT_XMIT_DATA|QLA_TGT_XMIT_STATUS,
 617                                 se_cmd->scsi_status);
 618 }
 619
 620 static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd)
 621 {
 622         struct qla_tgt_cmd *cmd = container_of(se_cmd,
 623                                 struct qla_tgt_cmd, se_cmd);
 624         int xmit_type = QLA_TGT_XMIT_STATUS;
 625
 626         cmd->bufflen = se_cmd->data_length;
 627         cmd->sg = NULL;
 628         cmd->sg_cnt = 0;
 629         cmd->offset = 0;
 630         cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
 631         cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED);
 632
 633         if (se_cmd->data_direction == DMA_FROM_DEVICE) {
 634                 /*
 635                  * For FCP_READ with CHECK_CONDITION status, clear cmd->bufflen
 636                  * for qla_tgt_xmit_response LLD code
 637                  */
 638                 if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
 639                         se_cmd->se_cmd_flags &= ~SCF_OVERFLOW_BIT;
 640                         se_cmd->residual_count = 0;
 641                 }
 642                 se_cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT;
 643                 se_cmd->residual_count += se_cmd->data_length;
 644
 645                 cmd->bufflen = 0;
 646         }
 647         /*
 648          * Now queue status response to qla2xxx LLD code and response ring
 649          */
 650         return qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status);
 651 }
 652
 653 static void tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd)
 654 {
 655         struct se_tmr_req *se_tmr = se_cmd->se_tmr_req;
 656         struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
 657                                 struct qla_tgt_mgmt_cmd, se_cmd);
 658
 659         pr_debug("queue_tm_rsp: mcmd: %p func: 0x%02x response: 0x%02x\n",
 660                         mcmd, se_tmr->function, se_tmr->response);
 661         /*
 662          * Do translation between TCM TM response codes and
 663          * QLA2xxx FC TM response codes.
 664          */
 665         switch (se_tmr->response) {
 666         case TMR_FUNCTION_COMPLETE:
 667                 mcmd->fc_tm_rsp = FC_TM_SUCCESS;
 668                 break;
 669         case TMR_TASK_DOES_NOT_EXIST:
 670                 mcmd->fc_tm_rsp = FC_TM_BAD_CMD;
 671                 break;
 672         case TMR_FUNCTION_REJECTED:
 673                 mcmd->fc_tm_rsp = FC_TM_REJECT;
 674                 break;
 675         case TMR_LUN_DOES_NOT_EXIST:
 676         default:
 677                 mcmd->fc_tm_rsp = FC_TM_FAILED;
 678                 break;
 679         }
 680         /*
 681          * Queue the TM response to QLA2xxx LLD to build a
 682          * CTIO response packet.
 683          */
 684         qlt_xmit_tm_rsp(mcmd);
 685 }
 686
 687 /* Local pointer to allocated TCM configfs fabric module */
 688 struct target_fabric_configfs *tcm_qla2xxx_fabric_configfs;
 689 struct target_fabric_configfs *tcm_qla2xxx_npiv_fabric_configfs;
 690
 691 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *,
 692                         struct tcm_qla2xxx_nacl *, struct qla_tgt_sess *);
 693 /*
 694  * Expected to be called with struct qla_hw_data->hardware_lock held
 695  */
 696 static void tcm_qla2xxx_clear_nacl_from_fcport_map(struct qla_tgt_sess *sess)
 697 {
 698         struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
 699         struct se_portal_group *se_tpg = se_nacl->se_tpg;
 700         struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
 701         struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
 702                                 struct tcm_qla2xxx_lport, lport_wwn);
 703         struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
 704                                 struct tcm_qla2xxx_nacl, se_node_acl);
 705         void *node;
 706
 707         pr_debug("fc_rport domain: port_id 0x%06x\n", nacl->nport_id);
 708
 709         node = btree_remove32(&lport->lport_fcport_map, nacl->nport_id);
 710         WARN_ON(node && (node != se_nacl));
 711
 712         pr_debug("Removed from fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%06x\n",
 713             se_nacl, nacl->nport_wwnn, nacl->nport_id);
 714         /*
 715          * Now clear the se_nacl and session pointers from our HW lport lookup
 716          * table mapping for this initiator's fabric S_ID and LOOP_ID entries.
 717          *
 718          * This is done ahead of callbacks into tcm_qla2xxx_free_session() ->
 719          * target_wait_for_sess_cmds() before the session waits for outstanding
 720          * I/O to complete, to avoid a race between session shutdown execution
 721          * and incoming ATIOs or TMRs picking up a stale se_node_act reference.
 722          */
 723         tcm_qla2xxx_clear_sess_lookup(lport, nacl, sess);
 724 }
 725
 726 static void tcm_qla2xxx_release_session(struct kref *kref)
 727 {
 728         struct se_session *se_sess = container_of(kref,
 729                         struct se_session, sess_kref);
 730
 731         qlt_unreg_sess(se_sess->fabric_sess_ptr);
 732 }
 733
 734 static void tcm_qla2xxx_put_session(struct se_session *se_sess)
 735 {
 736         struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
 737         struct qla_hw_data *ha = sess->vha->hw;
 738         unsigned long flags;
 739
 740         spin_lock_irqsave(&ha->hardware_lock, flags);
 741         kref_put(&se_sess->sess_kref, tcm_qla2xxx_release_session);
 742         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 743 }
 744
 745 static void tcm_qla2xxx_put_sess(struct qla_tgt_sess *sess)
 746 {
 747         if (!sess)
 748                 return;
 749
 750         assert_spin_locked(&sess->vha->hw->hardware_lock);
 751         kref_put(&sess->se_sess->sess_kref, tcm_qla2xxx_release_session);
 752 }
 753
 754 static void tcm_qla2xxx_shutdown_sess(struct qla_tgt_sess *sess)
 755 {
 756         assert_spin_locked(&sess->vha->hw->hardware_lock);
 757         target_sess_cmd_list_set_waiting(sess->se_sess);
 758 }
 759
 760 static struct se_node_acl *tcm_qla2xxx_make_nodeacl(
 761         struct se_portal_group *se_tpg,
 762         struct config_group *group,
 763         const char *name)
 764 {
 765         struct se_node_acl *se_nacl, *se_nacl_new;
 766         struct tcm_qla2xxx_nacl *nacl;
 767         u64 wwnn;
 768         u32 qla2xxx_nexus_depth;
 769
 770         if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0)
 771                 return ERR_PTR(-EINVAL);
 772
 773         se_nacl_new = tcm_qla2xxx_alloc_fabric_acl(se_tpg);
 774         if (!se_nacl_new)
 775                 return ERR_PTR(-ENOMEM);
 776 /* #warning FIXME: Hardcoded qla2xxx_nexus depth in tcm_qla2xxx_make_nodeacl */
 777         qla2xxx_nexus_depth = 1;
 778
 779         /*
 780          * se_nacl_new may be released by core_tpg_add_initiator_node_acl()
 781          * when converting a NodeACL from demo mode -> explict
 782          */
 783         se_nacl = core_tpg_add_initiator_node_acl(se_tpg, se_nacl_new,
 784                                 name, qla2xxx_nexus_depth);
 785         if (IS_ERR(se_nacl)) {
 786                 tcm_qla2xxx_release_fabric_acl(se_tpg, se_nacl_new);
 787                 return se_nacl;
 788         }
 789         /*
 790          * Locate our struct tcm_qla2xxx_nacl and set the FC Nport WWPN
 791          */
 792         nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
 793         nacl->nport_wwnn = wwnn;
 794         tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn);
 795
 796         return se_nacl;
 797 }
 798
 799 static void tcm_qla2xxx_drop_nodeacl(struct se_node_acl *se_acl)
 800 {
 801         struct se_portal_group *se_tpg = se_acl->se_tpg;
 802         struct tcm_qla2xxx_nacl *nacl = container_of(se_acl,
 803                                 struct tcm_qla2xxx_nacl, se_node_acl);
 804
 805         core_tpg_del_initiator_node_acl(se_tpg, se_acl, 1);
 806         kfree(nacl);
 807 }
 808
 809 /* Start items for tcm_qla2xxx_tpg_attrib_cit */
 810
 811 #define DEF_QLA_TPG_ATTRIB(name)                                        \
 812                                                                         \
 813 static ssize_t tcm_qla2xxx_tpg_attrib_show_##name(                      \
 814         struct se_portal_group *se_tpg,                                 \
 815         char *page)                                                     \
 816 {                                                                       \
 817         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,              \
 818                         struct tcm_qla2xxx_tpg, se_tpg);                \
 819                                                                         \
 820         return sprintf(page, "%u\n", tpg->tpg_attrib.name);     \
 821 }                                                                       \
 822                                                                         \
 823 static ssize_t tcm_qla2xxx_tpg_attrib_store_##name(                     \
 824         struct se_portal_group *se_tpg,                                 \
 825         const char *page,                                               \
 826         size_t count)                                                   \
 827 {                                                                       \
 828         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,              \
 829                         struct tcm_qla2xxx_tpg, se_tpg);                \
 830         unsigned long val;                                              \
 831         int ret;                                                        \
 832                                                                         \
 833         ret = kstrtoul(page, 0, &val);                                  \
 834         if (ret < 0) {                                                  \
 835                 pr_err("kstrtoul() failed with"                         \
 836                                 " ret: %d\n", ret);                     \
 837                 return -EINVAL;                                         \
 838         }                                                               \
 839         ret = tcm_qla2xxx_set_attrib_##name(tpg, val);                  \
 840                                                                         \
 841         return (!ret) ? count : -EINVAL;                                \
 842 }
 843
 844 #define DEF_QLA_TPG_ATTR_BOOL(_name)                                    \
 845                                                                         \
 846 static int tcm_qla2xxx_set_attrib_##_name(                              \
 847         struct tcm_qla2xxx_tpg *tpg,                                    \
 848         unsigned long val)                                              \
 849 {                                                                       \
 850         struct tcm_qla2xxx_tpg_attrib *a = &tpg->tpg_attrib;            \
 851                                                                         \
 852         if ((val != 0) && (val != 1)) {                                 \
 853                 pr_err("Illegal boolean value %lu\n", val);             \
 854                 return -EINVAL;                                         \
 855         }                                                               \
 856                                                                         \
 857         a->_name = val;                                                 \
 858         return 0;                                                       \
 859 }
 860
 861 #define QLA_TPG_ATTR(_name, _mode) \
 862         TF_TPG_ATTRIB_ATTR(tcm_qla2xxx, _name, _mode);
 863
 864 /*
 865  * Define tcm_qla2xxx_tpg_attrib_s_generate_node_acls
 866  */
 867 DEF_QLA_TPG_ATTR_BOOL(generate_node_acls);
 868 DEF_QLA_TPG_ATTRIB(generate_node_acls);
 869 QLA_TPG_ATTR(generate_node_acls, S_IRUGO | S_IWUSR);
 870
 871 /*
 872  Define tcm_qla2xxx_attrib_s_cache_dynamic_acls
 873  */
 874 DEF_QLA_TPG_ATTR_BOOL(cache_dynamic_acls);
 875 DEF_QLA_TPG_ATTRIB(cache_dynamic_acls);
 876 QLA_TPG_ATTR(cache_dynamic_acls, S_IRUGO | S_IWUSR);
 877
 878 /*
 879  * Define tcm_qla2xxx_tpg_attrib_s_demo_mode_write_protect
 880  */
 881 DEF_QLA_TPG_ATTR_BOOL(demo_mode_write_protect);
 882 DEF_QLA_TPG_ATTRIB(demo_mode_write_protect);
 883 QLA_TPG_ATTR(demo_mode_write_protect, S_IRUGO | S_IWUSR);
 884
 885 /*
 886  * Define tcm_qla2xxx_tpg_attrib_s_prod_mode_write_protect
 887  */
 888 DEF_QLA_TPG_ATTR_BOOL(prod_mode_write_protect);
 889 DEF_QLA_TPG_ATTRIB(prod_mode_write_protect);
 890 QLA_TPG_ATTR(prod_mode_write_protect, S_IRUGO | S_IWUSR);
 891
 892 /*
 893  * Define tcm_qla2xxx_tpg_attrib_s_demo_mode_login_only
 894  */
 895 DEF_QLA_TPG_ATTR_BOOL(demo_mode_login_only);
 896 DEF_QLA_TPG_ATTRIB(demo_mode_login_only);
 897 QLA_TPG_ATTR(demo_mode_login_only, S_IRUGO | S_IWUSR);
 898
 899 static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = {
 900         &tcm_qla2xxx_tpg_attrib_generate_node_acls.attr,
 901         &tcm_qla2xxx_tpg_attrib_cache_dynamic_acls.attr,
 902         &tcm_qla2xxx_tpg_attrib_demo_mode_write_protect.attr,
 903         &tcm_qla2xxx_tpg_attrib_prod_mode_write_protect.attr,
 904         &tcm_qla2xxx_tpg_attrib_demo_mode_login_only.attr,
 905         NULL,
 906 };
 907
 908 /* End items for tcm_qla2xxx_tpg_attrib_cit */
 909
 910 static ssize_t tcm_qla2xxx_tpg_show_enable(
 911         struct se_portal_group *se_tpg,
 912         char *page)
 913 {
 914         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 915                         struct tcm_qla2xxx_tpg, se_tpg);
 916
 917         return snprintf(page, PAGE_SIZE, "%d\n",
 918                         atomic_read(&tpg->lport_tpg_enabled));
 919 }
 920
 921 static void tcm_qla2xxx_depend_tpg(struct work_struct *work)
 922 {
 923         struct tcm_qla2xxx_tpg *base_tpg = container_of(work,
 924                                 struct tcm_qla2xxx_tpg, tpg_base_work);
 925         struct se_portal_group *se_tpg = &base_tpg->se_tpg;
 926         struct scsi_qla_host *base_vha = base_tpg->lport->qla_vha;
 927
 928         if (!configfs_depend_item(se_tpg->se_tpg_tfo->tf_subsys,
 929                                   &se_tpg->tpg_group.cg_item)) {
 930                 atomic_set(&base_tpg->lport_tpg_enabled, 1);
 931                 qlt_enable_vha(base_vha);
 932         }
 933         complete(&base_tpg->tpg_base_comp);
 934 }
 935
 936 static void tcm_qla2xxx_undepend_tpg(struct work_struct *work)
 937 {
 938         struct tcm_qla2xxx_tpg *base_tpg = container_of(work,
 939                                 struct tcm_qla2xxx_tpg, tpg_base_work);
 940         struct se_portal_group *se_tpg = &base_tpg->se_tpg;
 941         struct scsi_qla_host *base_vha = base_tpg->lport->qla_vha;
 942
 943         if (!qlt_stop_phase1(base_vha->vha_tgt.qla_tgt)) {
 944                 atomic_set(&base_tpg->lport_tpg_enabled, 0);
 945                 configfs_undepend_item(se_tpg->se_tpg_tfo->tf_subsys,
 946                                        &se_tpg->tpg_group.cg_item);
 947         }
 948         complete(&base_tpg->tpg_base_comp);
 949 }
 950
 951 static ssize_t tcm_qla2xxx_tpg_store_enable(
 952         struct se_portal_group *se_tpg,
 953         const char *page,
 954         size_t count)
 955 {
 956         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 957                         struct tcm_qla2xxx_tpg, se_tpg);
 958         unsigned long op;
 959         int rc;
 960
 961         rc = kstrtoul(page, 0, &op);
 962         if (rc < 0) {
 963                 pr_err("kstrtoul() returned %d\n", rc);
 964                 return -EINVAL;
 965         }
 966         if ((op != 1) && (op != 0)) {
 967                 pr_err("Illegal value for tpg_enable: %lu\n", op);
 968                 return -EINVAL;
 969         }
 970         if (op) {
 971                 if (atomic_read(&tpg->lport_tpg_enabled))
 972                         return -EEXIST;
 973
 974                 INIT_WORK(&tpg->tpg_base_work, tcm_qla2xxx_depend_tpg);
 975         } else {
 976                 if (!atomic_read(&tpg->lport_tpg_enabled))
 977                         return count;
 978
 979                 INIT_WORK(&tpg->tpg_base_work, tcm_qla2xxx_undepend_tpg);
 980         }
 981         init_completion(&tpg->tpg_base_comp);
 982         schedule_work(&tpg->tpg_base_work);
 983         wait_for_completion(&tpg->tpg_base_comp);
 984
 985         if (op) {
 986                 if (!atomic_read(&tpg->lport_tpg_enabled))
 987                         return -ENODEV;
 988         } else {
 989                 if (atomic_read(&tpg->lport_tpg_enabled))
 990                         return -EPERM;
 991         }
 992         return count;
 993 }
 994
 995 TF_TPG_BASE_ATTR(tcm_qla2xxx, enable, S_IRUGO | S_IWUSR);
 996
 997 static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = {
 998         &tcm_qla2xxx_tpg_enable.attr,
 999         NULL,
1000 };
1001
1002 static struct se_portal_group *tcm_qla2xxx_make_tpg(
1003         struct se_wwn *wwn,
1004         struct config_group *group,
1005         const char *name)
1006 {
1007         struct tcm_qla2xxx_lport *lport = container_of(wwn,
1008                         struct tcm_qla2xxx_lport, lport_wwn);
1009         struct tcm_qla2xxx_tpg *tpg;
1010         unsigned long tpgt;
1011         int ret;
1012
1013         if (strstr(name, "tpgt_") != name)
1014                 return ERR_PTR(-EINVAL);
1015         if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
1016                 return ERR_PTR(-EINVAL);
1017
1018         if ((tpgt != 1)) {
1019                 pr_err("In non NPIV mode, a single TPG=1 is used for HW port mappings\n");
1020                 return ERR_PTR(-ENOSYS);
1021         }
1022
1023         tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
1024         if (!tpg) {
1025                 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1026                 return ERR_PTR(-ENOMEM);
1027         }
1028         tpg->lport = lport;
1029         tpg->lport_tpgt = tpgt;
1030         /*
1031          * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
1032          * NodeACLs
1033          */
1034         tpg->tpg_attrib.generate_node_acls = 1;
1035         tpg->tpg_attrib.demo_mode_write_protect = 1;
1036         tpg->tpg_attrib.cache_dynamic_acls = 1;
1037         tpg->tpg_attrib.demo_mode_login_only = 1;
1038
1039         ret = core_tpg_register(&tcm_qla2xxx_fabric_configfs->tf_ops, wwn,
1040                                 &tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL);
1041         if (ret < 0) {
1042                 kfree(tpg);
1043                 return NULL;
1044         }
1045
1046         lport->tpg_1 = tpg;
1047
1048         return &tpg->se_tpg;
1049 }
1050
1051 static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg)
1052 {
1053         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1054                         struct tcm_qla2xxx_tpg, se_tpg);
1055         struct tcm_qla2xxx_lport *lport = tpg->lport;
1056         struct scsi_qla_host *vha = lport->qla_vha;
1057         /*
1058          * Call into qla2x_target.c LLD logic to shutdown the active
1059          * FC Nexuses and disable target mode operation for this qla_hw_data
1060          */
1061         if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stop)
1062                 qlt_stop_phase1(vha->vha_tgt.qla_tgt);
1063
1064         core_tpg_deregister(se_tpg);
1065         /*
1066          * Clear local TPG=1 pointer for non NPIV mode.
1067          */
1068         lport->tpg_1 = NULL;
1069         kfree(tpg);
1070 }
1071
1072 static ssize_t tcm_qla2xxx_npiv_tpg_show_enable(
1073         struct se_portal_group *se_tpg,
1074         char *page)
1075 {
1076         return tcm_qla2xxx_tpg_show_enable(se_tpg, page);
1077 }
1078
1079 static ssize_t tcm_qla2xxx_npiv_tpg_store_enable(
1080         struct se_portal_group *se_tpg,
1081         const char *page,
1082         size_t count)
1083 {
1084         struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
1085         struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
1086                         struct tcm_qla2xxx_lport, lport_wwn);
1087         struct scsi_qla_host *vha = lport->qla_vha;
1088         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1089                         struct tcm_qla2xxx_tpg, se_tpg);
1090         unsigned long op;
1091         int rc;
1092
1093         rc = kstrtoul(page, 0, &op);
1094         if (rc < 0) {
1095                 pr_err("kstrtoul() returned %d\n", rc);
1096                 return -EINVAL;
1097         }
1098         if ((op != 1) && (op != 0)) {
1099                 pr_err("Illegal value for tpg_enable: %lu\n", op);
1100                 return -EINVAL;
1101         }
1102         if (op) {
1103                 if (atomic_read(&tpg->lport_tpg_enabled))
1104                         return -EEXIST;
1105
1106                 atomic_set(&tpg->lport_tpg_enabled, 1);
1107                 qlt_enable_vha(vha);
1108         } else {
1109                 if (!atomic_read(&tpg->lport_tpg_enabled))
1110                         return count;
1111
1112                 atomic_set(&tpg->lport_tpg_enabled, 0);
1113                 qlt_stop_phase1(vha->vha_tgt.qla_tgt);
1114         }
1115
1116         return count;
1117 }
1118
1119 TF_TPG_BASE_ATTR(tcm_qla2xxx_npiv, enable, S_IRUGO | S_IWUSR);
1120
1121 static struct configfs_attribute *tcm_qla2xxx_npiv_tpg_attrs[] = {
1122         &tcm_qla2xxx_npiv_tpg_enable.attr,
1123         NULL,
1124 };
1125
1126 static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg(
1127         struct se_wwn *wwn,
1128         struct config_group *group,
1129         const char *name)
1130 {
1131         struct tcm_qla2xxx_lport *lport = container_of(wwn,
1132                         struct tcm_qla2xxx_lport, lport_wwn);
1133         struct tcm_qla2xxx_tpg *tpg;
1134         unsigned long tpgt;
1135         int ret;
1136
1137         if (strstr(name, "tpgt_") != name)
1138                 return ERR_PTR(-EINVAL);
1139         if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
1140                 return ERR_PTR(-EINVAL);
1141
1142         tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
1143         if (!tpg) {
1144                 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1145                 return ERR_PTR(-ENOMEM);
1146         }
1147         tpg->lport = lport;
1148         tpg->lport_tpgt = tpgt;
1149
1150         /*
1151          * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
1152          * NodeACLs
1153          */
1154         tpg->tpg_attrib.generate_node_acls = 1;
1155         tpg->tpg_attrib.demo_mode_write_protect = 1;
1156         tpg->tpg_attrib.cache_dynamic_acls = 1;
1157         tpg->tpg_attrib.demo_mode_login_only = 1;
1158
1159         ret = core_tpg_register(&tcm_qla2xxx_npiv_fabric_configfs->tf_ops, wwn,
1160                                 &tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL);
1161         if (ret < 0) {
1162                 kfree(tpg);
1163                 return NULL;
1164         }
1165         lport->tpg_1 = tpg;
1166         return &tpg->se_tpg;
1167 }
1168
1169 /*
1170  * Expected to be called with struct qla_hw_data->hardware_lock held
1171  */
1172 static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_s_id(
1173         scsi_qla_host_t *vha,
1174         const uint8_t *s_id)
1175 {
1176         struct tcm_qla2xxx_lport *lport;
1177         struct se_node_acl *se_nacl;
1178         struct tcm_qla2xxx_nacl *nacl;
1179         u32 key;
1180
1181         lport = vha->vha_tgt.target_lport_ptr;
1182         if (!lport) {
1183                 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1184                 dump_stack();
1185                 return NULL;
1186         }
1187
1188         key = (((unsigned long)s_id[0] << 16) |
1189                ((unsigned long)s_id[1] << 8) |
1190                (unsigned long)s_id[2]);
1191         pr_debug("find_sess_by_s_id: 0x%06x\n", key);
1192
1193         se_nacl = btree_lookup32(&lport->lport_fcport_map, key);
1194         if (!se_nacl) {
1195                 pr_debug("Unable to locate s_id: 0x%06x\n", key);
1196                 return NULL;
1197         }
1198         pr_debug("find_sess_by_s_id: located se_nacl: %p, initiatorname: %s\n",
1199             se_nacl, se_nacl->initiatorname);
1200
1201         nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1202         if (!nacl->qla_tgt_sess) {
1203                 pr_err("Unable to locate struct qla_tgt_sess\n");
1204                 return NULL;
1205         }
1206
1207         return nacl->qla_tgt_sess;
1208 }
1209
1210 /*
1211  * Expected to be called with struct qla_hw_data->hardware_lock held
1212  */
1213 static void tcm_qla2xxx_set_sess_by_s_id(
1214         struct tcm_qla2xxx_lport *lport,
1215         struct se_node_acl *new_se_nacl,
1216         struct tcm_qla2xxx_nacl *nacl,
1217         struct se_session *se_sess,
1218         struct qla_tgt_sess *qla_tgt_sess,
1219         uint8_t *s_id)
1220 {
1221         u32 key;
1222         void *slot;
1223         int rc;
1224
1225         key = (((unsigned long)s_id[0] << 16) |
1226                ((unsigned long)s_id[1] << 8) |
1227                (unsigned long)s_id[2]);
1228         pr_debug("set_sess_by_s_id: %06x\n", key);
1229
1230         slot = btree_lookup32(&lport->lport_fcport_map, key);
1231         if (!slot) {
1232                 if (new_se_nacl) {
1233                         pr_debug("Setting up new fc_port entry to new_se_nacl\n");
1234                         nacl->nport_id = key;
1235                         rc = btree_insert32(&lport->lport_fcport_map, key,
1236                                         new_se_nacl, GFP_ATOMIC);
1237                         if (rc)
1238                                 printk(KERN_ERR "Unable to insert s_id into fcport_map: %06x\n",
1239                                     (int)key);
1240                 } else {
1241                         pr_debug("Wiping nonexisting fc_port entry\n");
1242                 }
1243
1244                 qla_tgt_sess->se_sess = se_sess;
1245                 nacl->qla_tgt_sess = qla_tgt_sess;
1246                 return;
1247         }
1248
1249         if (nacl->qla_tgt_sess) {
1250                 if (new_se_nacl == NULL) {
1251                         pr_debug("Clearing existing nacl->qla_tgt_sess and fc_port entry\n");
1252                         btree_remove32(&lport->lport_fcport_map, key);
1253                         nacl->qla_tgt_sess = NULL;
1254                         return;
1255                 }
1256                 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_port entry\n");
1257                 btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1258                 qla_tgt_sess->se_sess = se_sess;
1259                 nacl->qla_tgt_sess = qla_tgt_sess;
1260                 return;
1261         }
1262
1263         if (new_se_nacl == NULL) {
1264                 pr_debug("Clearing existing fc_port entry\n");
1265                 btree_remove32(&lport->lport_fcport_map, key);
1266                 return;
1267         }
1268
1269         pr_debug("Replacing existing fc_port entry w/o active nacl->qla_tgt_sess\n");
1270         btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1271         qla_tgt_sess->se_sess = se_sess;
1272         nacl->qla_tgt_sess = qla_tgt_sess;
1273
1274         pr_debug("Setup nacl->qla_tgt_sess %p by s_id for se_nacl: %p, initiatorname: %s\n",
1275             nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname);
1276 }
1277
1278 /*
1279  * Expected to be called with struct qla_hw_data->hardware_lock held
1280  */
1281 static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_loop_id(
1282         scsi_qla_host_t *vha,
1283         const uint16_t loop_id)
1284 {
1285         struct tcm_qla2xxx_lport *lport;
1286         struct se_node_acl *se_nacl;
1287         struct tcm_qla2xxx_nacl *nacl;
1288         struct tcm_qla2xxx_fc_loopid *fc_loopid;
1289
1290         lport = vha->vha_tgt.target_lport_ptr;
1291         if (!lport) {
1292                 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1293                 dump_stack();
1294                 return NULL;
1295         }
1296
1297         pr_debug("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1298
1299         fc_loopid = lport->lport_loopid_map + loop_id;
1300         se_nacl = fc_loopid->se_nacl;
1301         if (!se_nacl) {
1302                 pr_debug("Unable to locate se_nacl by loop_id: 0x%04x\n",
1303                     loop_id);
1304                 return NULL;
1305         }
1306
1307         nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1308
1309         if (!nacl->qla_tgt_sess) {
1310                 pr_err("Unable to locate struct qla_tgt_sess\n");
1311                 return NULL;
1312         }
1313
1314         return nacl->qla_tgt_sess;
1315 }
1316
1317 /*
1318  * Expected to be called with struct qla_hw_data->hardware_lock held
1319  */
1320 static void tcm_qla2xxx_set_sess_by_loop_id(
1321         struct tcm_qla2xxx_lport *lport,
1322         struct se_node_acl *new_se_nacl,
1323         struct tcm_qla2xxx_nacl *nacl,
1324         struct se_session *se_sess,
1325         struct qla_tgt_sess *qla_tgt_sess,
1326         uint16_t loop_id)
1327 {
1328         struct se_node_acl *saved_nacl;
1329         struct tcm_qla2xxx_fc_loopid *fc_loopid;
1330
1331         pr_debug("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1332
1333         fc_loopid = &((struct tcm_qla2xxx_fc_loopid *)
1334                         lport->lport_loopid_map)[loop_id];
1335
1336         saved_nacl = fc_loopid->se_nacl;
1337         if (!saved_nacl) {
1338                 pr_debug("Setting up new fc_loopid->se_nacl to new_se_nacl\n");
1339                 fc_loopid->se_nacl = new_se_nacl;
1340                 if (qla_tgt_sess->se_sess != se_sess)
1341                         qla_tgt_sess->se_sess = se_sess;
1342                 if (nacl->qla_tgt_sess != qla_tgt_sess)
1343                         nacl->qla_tgt_sess = qla_tgt_sess;
1344                 return;
1345         }
1346
1347         if (nacl->qla_tgt_sess) {
1348                 if (new_se_nacl == NULL) {
1349                         pr_debug("Clearing nacl->qla_tgt_sess and fc_loopid->se_nacl\n");
1350                         fc_loopid->se_nacl = NULL;
1351                         nacl->qla_tgt_sess = NULL;
1352                         return;
1353                 }
1354
1355                 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_loopid->se_nacl\n");
1356                 fc_loopid->se_nacl = new_se_nacl;
1357                 if (qla_tgt_sess->se_sess != se_sess)
1358                         qla_tgt_sess->se_sess = se_sess;
1359                 if (nacl->qla_tgt_sess != qla_tgt_sess)
1360                         nacl->qla_tgt_sess = qla_tgt_sess;
1361                 return;
1362         }
1363
1364         if (new_se_nacl == NULL) {
1365                 pr_debug("Clearing fc_loopid->se_nacl\n");
1366                 fc_loopid->se_nacl = NULL;
1367                 return;
1368         }
1369
1370         pr_debug("Replacing existing fc_loopid->se_nacl w/o active nacl->qla_tgt_sess\n");
1371         fc_loopid->se_nacl = new_se_nacl;
1372         if (qla_tgt_sess->se_sess != se_sess)
1373                 qla_tgt_sess->se_sess = se_sess;
1374         if (nacl->qla_tgt_sess != qla_tgt_sess)
1375                 nacl->qla_tgt_sess = qla_tgt_sess;
1376
1377         pr_debug("Setup nacl->qla_tgt_sess %p by loop_id for se_nacl: %p, initiatorname: %s\n",
1378             nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname);
1379 }
1380
1381 /*
1382  * Should always be called with qla_hw_data->hardware_lock held.
1383  */
1384 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *lport,
1385                 struct tcm_qla2xxx_nacl *nacl, struct qla_tgt_sess *sess)
1386 {
1387         struct se_session *se_sess = sess->se_sess;
1388         unsigned char be_sid[3];
1389
1390         be_sid[0] = sess->s_id.b.domain;
1391         be_sid[1] = sess->s_id.b.area;
1392         be_sid[2] = sess->s_id.b.al_pa;
1393
1394         tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess,
1395                                 sess, be_sid);
1396         tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess,
1397                                 sess, sess->loop_id);
1398 }
1399
1400 static void tcm_qla2xxx_free_session(struct qla_tgt_sess *sess)
1401 {
1402         struct qla_tgt *tgt = sess->tgt;
1403         struct qla_hw_data *ha = tgt->ha;
1404         scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
1405         struct se_session *se_sess;
1406         struct se_node_acl *se_nacl;
1407         struct tcm_qla2xxx_lport *lport;
1408         struct tcm_qla2xxx_nacl *nacl;
1409
1410         BUG_ON(in_interrupt());
1411
1412         se_sess = sess->se_sess;
1413         if (!se_sess) {
1414                 pr_err("struct qla_tgt_sess->se_sess is NULL\n");
1415                 dump_stack();
1416                 return;
1417         }
1418         se_nacl = se_sess->se_node_acl;
1419         nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1420
1421         lport = vha->vha_tgt.target_lport_ptr;
1422         if (!lport) {
1423                 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1424                 dump_stack();
1425                 return;
1426         }
1427         target_wait_for_sess_cmds(se_sess);
1428
1429         transport_deregister_session_configfs(sess->se_sess);
1430         transport_deregister_session(sess->se_sess);
1431 }
1432
1433 /*
1434  * Called via qlt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl()
1435  * to locate struct se_node_acl
1436  */
1437 static int tcm_qla2xxx_check_initiator_node_acl(
1438         scsi_qla_host_t *vha,
1439         unsigned char *fc_wwpn,
1440         void *qla_tgt_sess,
1441         uint8_t *s_id,
1442         uint16_t loop_id)
1443 {
1444         struct qla_hw_data *ha = vha->hw;
1445         struct tcm_qla2xxx_lport *lport;
1446         struct tcm_qla2xxx_tpg *tpg;
1447         struct tcm_qla2xxx_nacl *nacl;
1448         struct se_portal_group *se_tpg;
1449         struct se_node_acl *se_nacl;
1450         struct se_session *se_sess;
1451         struct qla_tgt_sess *sess = qla_tgt_sess;
1452         unsigned char port_name[36];
1453         unsigned long flags;
1454
1455         lport = vha->vha_tgt.target_lport_ptr;
1456         if (!lport) {
1457                 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1458                 dump_stack();
1459                 return -EINVAL;
1460         }
1461         /*
1462          * Locate the TPG=1 reference..
1463          */
1464         tpg = lport->tpg_1;
1465         if (!tpg) {
1466                 pr_err("Unable to lcoate struct tcm_qla2xxx_lport->tpg_1\n");
1467                 return -EINVAL;
1468         }
1469         se_tpg = &tpg->se_tpg;
1470
1471         se_sess = transport_init_session();
1472         if (IS_ERR(se_sess)) {
1473                 pr_err("Unable to initialize struct se_session\n");
1474                 return PTR_ERR(se_sess);
1475         }
1476         /*
1477          * Format the FCP Initiator port_name into colon seperated values to
1478          * match the format by tcm_qla2xxx explict ConfigFS NodeACLs.
1479          */
1480         memset(&port_name, 0, 36);
1481         snprintf(port_name, 36, "%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x",
1482                 fc_wwpn[0], fc_wwpn[1], fc_wwpn[2], fc_wwpn[3], fc_wwpn[4],
1483                 fc_wwpn[5], fc_wwpn[6], fc_wwpn[7]);
1484         /*
1485          * Locate our struct se_node_acl either from an explict NodeACL created
1486          * via ConfigFS, or via running in TPG demo mode.
1487          */
1488         se_sess->se_node_acl = core_tpg_check_initiator_node_acl(se_tpg,
1489                                         port_name);
1490         if (!se_sess->se_node_acl) {
1491                 transport_free_session(se_sess);
1492                 return -EINVAL;
1493         }
1494         se_nacl = se_sess->se_node_acl;
1495         nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1496         /*
1497          * And now setup the new se_nacl and session pointers into our HW lport
1498          * mappings for fabric S_ID and LOOP_ID.
1499          */
1500         spin_lock_irqsave(&ha->hardware_lock, flags);
1501         tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl, se_sess,
1502                         qla_tgt_sess, s_id);
1503         tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl, se_sess,
1504                         qla_tgt_sess, loop_id);
1505         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1506         /*
1507          * Finally register the new FC Nexus with TCM
1508          */
1509         __transport_register_session(se_nacl->se_tpg, se_nacl, se_sess, sess);
1510
1511         return 0;
1512 }
1513
1514 static void tcm_qla2xxx_update_sess(struct qla_tgt_sess *sess, port_id_t s_id,
1515                                     uint16_t loop_id, bool conf_compl_supported)
1516 {
1517         struct qla_tgt *tgt = sess->tgt;
1518         struct qla_hw_data *ha = tgt->ha;
1519         scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
1520         struct tcm_qla2xxx_lport *lport = vha->vha_tgt.target_lport_ptr;
1521         struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
1522         struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
1523                         struct tcm_qla2xxx_nacl, se_node_acl);
1524         u32 key;
1525
1526
1527         if (sess->loop_id != loop_id || sess->s_id.b24 != s_id.b24)
1528                 pr_info("Updating session %p from port %8phC loop_id %d -> %d s_id %x:%x:%x -> %x:%x:%x\n",
1529                     sess, sess->port_name,
1530                     sess->loop_id, loop_id, sess->s_id.b.domain,
1531                     sess->s_id.b.area, sess->s_id.b.al_pa, s_id.b.domain,
1532                     s_id.b.area, s_id.b.al_pa);
1533
1534         if (sess->loop_id != loop_id) {
1535                 /*
1536                  * Because we can shuffle loop IDs around and we
1537                  * update different sessions non-atomically, we might
1538                  * have overwritten this session's old loop ID
1539                  * already, and we might end up overwriting some other
1540                  * session that will be updated later.  So we have to
1541                  * be extra careful and we can't warn about those things...
1542                  */
1543                 if (lport->lport_loopid_map[sess->loop_id].se_nacl == se_nacl)
1544                         lport->lport_loopid_map[sess->loop_id].se_nacl = NULL;
1545
1546                 lport->lport_loopid_map[loop_id].se_nacl = se_nacl;
1547
1548                 sess->loop_id = loop_id;
1549         }
1550
1551         if (sess->s_id.b24 != s_id.b24) {
1552                 key = (((u32) sess->s_id.b.domain << 16) |
1553                        ((u32) sess->s_id.b.area   <<  8) |
1554                        ((u32) sess->s_id.b.al_pa));
1555
1556                 if (btree_lookup32(&lport->lport_fcport_map, key))
1557                         WARN(btree_remove32(&lport->lport_fcport_map, key) != se_nacl,
1558                              "Found wrong se_nacl when updating s_id %x:%x:%x\n",
1559                              sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa);
1560                 else
1561                         WARN(1, "No lport_fcport_map entry for s_id %x:%x:%x\n",
1562                              sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa);
1563
1564                 key = (((u32) s_id.b.domain << 16) |
1565                        ((u32) s_id.b.area   <<  8) |
1566                        ((u32) s_id.b.al_pa));
1567
1568                 if (btree_lookup32(&lport->lport_fcport_map, key)) {
1569                         WARN(1, "Already have lport_fcport_map entry for s_id %x:%x:%x\n",
1570                              s_id.b.domain, s_id.b.area, s_id.b.al_pa);
1571                         btree_update32(&lport->lport_fcport_map, key, se_nacl);
1572                 } else {
1573                         btree_insert32(&lport->lport_fcport_map, key, se_nacl, GFP_ATOMIC);
1574                 }
1575
1576                 sess->s_id = s_id;
1577                 nacl->nport_id = key;
1578         }
1579
1580         sess->conf_compl_supported = conf_compl_supported;
1581 }
1582
1583 /*
1584  * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path.
1585  */
1586 static struct qla_tgt_func_tmpl tcm_qla2xxx_template = {
1587         .handle_cmd             = tcm_qla2xxx_handle_cmd,
1588         .handle_data            = tcm_qla2xxx_handle_data,
1589         .handle_tmr             = tcm_qla2xxx_handle_tmr,
1590         .free_cmd               = tcm_qla2xxx_free_cmd,
1591         .free_mcmd              = tcm_qla2xxx_free_mcmd,
1592         .free_session           = tcm_qla2xxx_free_session,
1593         .update_sess            = tcm_qla2xxx_update_sess,
1594         .check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl,
1595         .find_sess_by_s_id      = tcm_qla2xxx_find_sess_by_s_id,
1596         .find_sess_by_loop_id   = tcm_qla2xxx_find_sess_by_loop_id,
1597         .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map,
1598         .put_sess               = tcm_qla2xxx_put_sess,
1599         .shutdown_sess          = tcm_qla2xxx_shutdown_sess,
1600 };
1601
1602 static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport)
1603 {
1604         int rc;
1605
1606         rc = btree_init32(&lport->lport_fcport_map);
1607         if (rc) {
1608                 pr_err("Unable to initialize lport->lport_fcport_map btree\n");
1609                 return rc;
1610         }
1611
1612         lport->lport_loopid_map = vmalloc(sizeof(struct tcm_qla2xxx_fc_loopid) *
1613                                 65536);
1614         if (!lport->lport_loopid_map) {
1615                 pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n",
1616                     sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1617                 btree_destroy32(&lport->lport_fcport_map);
1618                 return -ENOMEM;
1619         }
1620         memset(lport->lport_loopid_map, 0, sizeof(struct tcm_qla2xxx_fc_loopid)
1621                * 65536);
1622         pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n",
1623                sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1624         return 0;
1625 }
1626
1627 static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha,
1628                                          void *target_lport_ptr,
1629                                          u64 npiv_wwpn, u64 npiv_wwnn)
1630 {
1631         struct qla_hw_data *ha = vha->hw;
1632         struct tcm_qla2xxx_lport *lport =
1633                         (struct tcm_qla2xxx_lport *)target_lport_ptr;
1634         /*
1635          * Setup tgt_ops, local pointer to vha and target_lport_ptr
1636          */
1637         ha->tgt.tgt_ops = &tcm_qla2xxx_template;
1638         vha->vha_tgt.target_lport_ptr = target_lport_ptr;
1639         lport->qla_vha = vha;
1640
1641         return 0;
1642 }
1643
1644 static struct se_wwn *tcm_qla2xxx_make_lport(
1645         struct target_fabric_configfs *tf,
1646         struct config_group *group,
1647         const char *name)
1648 {
1649         struct tcm_qla2xxx_lport *lport;
1650         u64 wwpn;
1651         int ret = -ENODEV;
1652
1653         if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0)
1654                 return ERR_PTR(-EINVAL);
1655
1656         lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1657         if (!lport) {
1658                 pr_err("Unable to allocate struct tcm_qla2xxx_lport\n");
1659                 return ERR_PTR(-ENOMEM);
1660         }
1661         lport->lport_wwpn = wwpn;
1662         tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN,
1663                                 wwpn);
1664         sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) wwpn);
1665
1666         ret = tcm_qla2xxx_init_lport(lport);
1667         if (ret != 0)
1668                 goto out;
1669
1670         ret = qlt_lport_register(lport, wwpn, 0, 0,
1671                                  tcm_qla2xxx_lport_register_cb);
1672         if (ret != 0)
1673                 goto out_lport;
1674
1675         return &lport->lport_wwn;
1676 out_lport:
1677         vfree(lport->lport_loopid_map);
1678         btree_destroy32(&lport->lport_fcport_map);
1679 out:
1680         kfree(lport);
1681         return ERR_PTR(ret);
1682 }
1683
1684 static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn)
1685 {
1686         struct tcm_qla2xxx_lport *lport = container_of(wwn,
1687                         struct tcm_qla2xxx_lport, lport_wwn);
1688         struct scsi_qla_host *vha = lport->qla_vha;
1689         struct se_node_acl *node;
1690         u32 key = 0;
1691
1692         /*
1693          * Call into qla2x_target.c LLD logic to complete the
1694          * shutdown of struct qla_tgt after the call to
1695          * qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above..
1696          */
1697         if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stopped)
1698                 qlt_stop_phase2(vha->vha_tgt.qla_tgt);
1699
1700         qlt_lport_deregister(vha);
1701
1702         vfree(lport->lport_loopid_map);
1703         btree_for_each_safe32(&lport->lport_fcport_map, key, node)
1704                 btree_remove32(&lport->lport_fcport_map, key);
1705         btree_destroy32(&lport->lport_fcport_map);
1706         kfree(lport);
1707 }
1708
1709 static int tcm_qla2xxx_lport_register_npiv_cb(struct scsi_qla_host *base_vha,
1710                                               void *target_lport_ptr,
1711                                               u64 npiv_wwpn, u64 npiv_wwnn)
1712 {
1713         struct fc_vport *vport;
1714         struct Scsi_Host *sh = base_vha->host;
1715         struct scsi_qla_host *npiv_vha;
1716         struct tcm_qla2xxx_lport *lport =
1717                         (struct tcm_qla2xxx_lport *)target_lport_ptr;
1718         struct tcm_qla2xxx_lport *base_lport =
1719                         (struct tcm_qla2xxx_lport *)base_vha->vha_tgt.target_lport_ptr;
1720         struct tcm_qla2xxx_tpg *base_tpg;
1721         struct fc_vport_identifiers vport_id;
1722
1723         if (!qla_tgt_mode_enabled(base_vha)) {
1724                 pr_err("qla2xxx base_vha not enabled for target mode\n");
1725                 return -EPERM;
1726         }
1727
1728         if (!base_lport || !base_lport->tpg_1 ||
1729             !atomic_read(&base_lport->tpg_1->lport_tpg_enabled)) {
1730                 pr_err("qla2xxx base_lport or tpg_1 not available\n");
1731                 return -EPERM;
1732         }
1733         base_tpg = base_lport->tpg_1;
1734
1735         memset(&vport_id, 0, sizeof(vport_id));
1736         vport_id.port_name = npiv_wwpn;
1737         vport_id.node_name = npiv_wwnn;
1738         vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR;
1739         vport_id.vport_type = FC_PORTTYPE_NPIV;
1740         vport_id.disable = false;
1741
1742         vport = fc_vport_create(sh, 0, &vport_id);
1743         if (!vport) {
1744                 pr_err("fc_vport_create failed for qla2xxx_npiv\n");
1745                 return -ENODEV;
1746         }
1747         /*
1748          * Setup local pointer to NPIV vhba + target_lport_ptr
1749          */
1750         npiv_vha = (struct scsi_qla_host *)vport->dd_data;
1751         npiv_vha->vha_tgt.target_lport_ptr = target_lport_ptr;
1752         lport->qla_vha = npiv_vha;
1753         scsi_host_get(npiv_vha->host);
1754         return 0;
1755 }
1756
1757
1758 static struct se_wwn *tcm_qla2xxx_npiv_make_lport(
1759         struct target_fabric_configfs *tf,
1760         struct config_group *group,
1761         const char *name)
1762 {
1763         struct tcm_qla2xxx_lport *lport;
1764         u64 phys_wwpn, npiv_wwpn, npiv_wwnn;
1765         char *p, tmp[128];
1766         int ret;
1767
1768         snprintf(tmp, 128, "%s", name);
1769
1770         p = strchr(tmp, '@');
1771         if (!p) {
1772                 pr_err("Unable to locate NPIV '@' seperator\n");
1773                 return ERR_PTR(-EINVAL);
1774         }
1775         *p++ = '\0';
1776
1777         if (tcm_qla2xxx_parse_wwn(tmp, &phys_wwpn, 1) < 0)
1778                 return ERR_PTR(-EINVAL);
1779
1780         if (tcm_qla2xxx_npiv_parse_wwn(p, strlen(p)+1,
1781                                        &npiv_wwpn, &npiv_wwnn) < 0)
1782                 return ERR_PTR(-EINVAL);
1783
1784         lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1785         if (!lport) {
1786                 pr_err("Unable to allocate struct tcm_qla2xxx_lport for NPIV\n");
1787                 return ERR_PTR(-ENOMEM);
1788         }
1789         lport->lport_npiv_wwpn = npiv_wwpn;
1790         lport->lport_npiv_wwnn = npiv_wwnn;
1791         sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) npiv_wwpn);
1792
1793         ret = tcm_qla2xxx_init_lport(lport);
1794         if (ret != 0)
1795                 goto out;
1796
1797         ret = qlt_lport_register(lport, phys_wwpn, npiv_wwpn, npiv_wwnn,
1798                                  tcm_qla2xxx_lport_register_npiv_cb);
1799         if (ret != 0)
1800                 goto out_lport;
1801
1802         return &lport->lport_wwn;
1803 out_lport:
1804         vfree(lport->lport_loopid_map);
1805         btree_destroy32(&lport->lport_fcport_map);
1806 out:
1807         kfree(lport);
1808         return ERR_PTR(ret);
1809 }
1810
1811 static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn)
1812 {
1813         struct tcm_qla2xxx_lport *lport = container_of(wwn,
1814                         struct tcm_qla2xxx_lport, lport_wwn);
1815         struct scsi_qla_host *npiv_vha = lport->qla_vha;
1816         struct qla_hw_data *ha = npiv_vha->hw;
1817         scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
1818
1819         scsi_host_put(npiv_vha->host);
1820         /*
1821          * Notify libfc that we want to release the vha->fc_vport
1822          */
1823         fc_vport_terminate(npiv_vha->fc_vport);
1824         scsi_host_put(base_vha->host);
1825         kfree(lport);
1826 }
1827
1828
1829 static ssize_t tcm_qla2xxx_wwn_show_attr_version(
1830         struct target_fabric_configfs *tf,
1831         char *page)
1832 {
1833         return sprintf(page,
1834             "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s on "
1835             UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname,
1836             utsname()->machine);
1837 }
1838
1839 TF_WWN_ATTR_RO(tcm_qla2xxx, version);
1840
1841 static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = {
1842         &tcm_qla2xxx_wwn_version.attr,
1843         NULL,
1844 };
1845
1846 static struct target_core_fabric_ops tcm_qla2xxx_ops = {
1847         .get_fabric_name                = tcm_qla2xxx_get_fabric_name,
1848         .get_fabric_proto_ident         = tcm_qla2xxx_get_fabric_proto_ident,
1849         .tpg_get_wwn                    = tcm_qla2xxx_get_fabric_wwn,
1850         .tpg_get_tag                    = tcm_qla2xxx_get_tag,
1851         .tpg_get_default_depth          = tcm_qla2xxx_get_default_depth,
1852         .tpg_get_pr_transport_id        = tcm_qla2xxx_get_pr_transport_id,
1853         .tpg_get_pr_transport_id_len    = tcm_qla2xxx_get_pr_transport_id_len,
1854         .tpg_parse_pr_out_transport_id  = tcm_qla2xxx_parse_pr_out_transport_id,
1855         .tpg_check_demo_mode            = tcm_qla2xxx_check_demo_mode,
1856         .tpg_check_demo_mode_cache      = tcm_qla2xxx_check_demo_mode_cache,
1857         .tpg_check_demo_mode_write_protect =
1858                                         tcm_qla2xxx_check_demo_write_protect,
1859         .tpg_check_prod_mode_write_protect =
1860                                         tcm_qla2xxx_check_prod_write_protect,
1861         .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,
1862         .tpg_alloc_fabric_acl           = tcm_qla2xxx_alloc_fabric_acl,
1863         .tpg_release_fabric_acl         = tcm_qla2xxx_release_fabric_acl,
1864         .tpg_get_inst_index             = tcm_qla2xxx_tpg_get_inst_index,
1865         .check_stop_free                = tcm_qla2xxx_check_stop_free,
1866         .release_cmd                    = tcm_qla2xxx_release_cmd,
1867         .put_session                    = tcm_qla2xxx_put_session,
1868         .shutdown_session               = tcm_qla2xxx_shutdown_session,
1869         .close_session                  = tcm_qla2xxx_close_session,
1870         .sess_get_index                 = tcm_qla2xxx_sess_get_index,
1871         .sess_get_initiator_sid         = NULL,
1872         .write_pending                  = tcm_qla2xxx_write_pending,
1873         .write_pending_status           = tcm_qla2xxx_write_pending_status,
1874         .set_default_node_attributes    = tcm_qla2xxx_set_default_node_attrs,
1875         .get_task_tag                   = tcm_qla2xxx_get_task_tag,
1876         .get_cmd_state                  = tcm_qla2xxx_get_cmd_state,
1877         .queue_data_in                  = tcm_qla2xxx_queue_data_in,
1878         .queue_status                   = tcm_qla2xxx_queue_status,
1879         .queue_tm_rsp                   = tcm_qla2xxx_queue_tm_rsp,
1880         /*
1881          * Setup function pointers for generic logic in
1882          * target_core_fabric_configfs.c
1883          */
1884         .fabric_make_wwn                = tcm_qla2xxx_make_lport,
1885         .fabric_drop_wwn                = tcm_qla2xxx_drop_lport,
1886         .fabric_make_tpg                = tcm_qla2xxx_make_tpg,
1887         .fabric_drop_tpg                = tcm_qla2xxx_drop_tpg,
1888         .fabric_post_link               = NULL,
1889         .fabric_pre_unlink              = NULL,
1890         .fabric_make_np                 = NULL,
1891         .fabric_drop_np                 = NULL,
1892         .fabric_make_nodeacl            = tcm_qla2xxx_make_nodeacl,
1893         .fabric_drop_nodeacl            = tcm_qla2xxx_drop_nodeacl,
1894 };
1895
1896 static struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = {
1897         .get_fabric_name                = tcm_qla2xxx_npiv_get_fabric_name,
1898         .get_fabric_proto_ident         = tcm_qla2xxx_get_fabric_proto_ident,
1899         .tpg_get_wwn                    = tcm_qla2xxx_get_fabric_wwn,
1900         .tpg_get_tag                    = tcm_qla2xxx_get_tag,
1901         .tpg_get_default_depth          = tcm_qla2xxx_get_default_depth,
1902         .tpg_get_pr_transport_id        = tcm_qla2xxx_get_pr_transport_id,
1903         .tpg_get_pr_transport_id_len    = tcm_qla2xxx_get_pr_transport_id_len,
1904         .tpg_parse_pr_out_transport_id  = tcm_qla2xxx_parse_pr_out_transport_id,
1905         .tpg_check_demo_mode            = tcm_qla2xxx_check_demo_mode,
1906         .tpg_check_demo_mode_cache      = tcm_qla2xxx_check_demo_mode_cache,
1907         .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_demo_mode,
1908         .tpg_check_prod_mode_write_protect =
1909             tcm_qla2xxx_check_prod_write_protect,
1910         .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,
1911         .tpg_alloc_fabric_acl           = tcm_qla2xxx_alloc_fabric_acl,
1912         .tpg_release_fabric_acl         = tcm_qla2xxx_release_fabric_acl,
1913         .tpg_get_inst_index             = tcm_qla2xxx_tpg_get_inst_index,
1914         .check_stop_free                = tcm_qla2xxx_check_stop_free,
1915         .release_cmd                    = tcm_qla2xxx_release_cmd,
1916         .put_session                    = tcm_qla2xxx_put_session,
1917         .shutdown_session               = tcm_qla2xxx_shutdown_session,
1918         .close_session                  = tcm_qla2xxx_close_session,
1919         .sess_get_index                 = tcm_qla2xxx_sess_get_index,
1920         .sess_get_initiator_sid         = NULL,
1921         .write_pending                  = tcm_qla2xxx_write_pending,
1922         .write_pending_status           = tcm_qla2xxx_write_pending_status,
1923         .set_default_node_attributes    = tcm_qla2xxx_set_default_node_attrs,
1924         .get_task_tag                   = tcm_qla2xxx_get_task_tag,
1925         .get_cmd_state                  = tcm_qla2xxx_get_cmd_state,
1926         .queue_data_in                  = tcm_qla2xxx_queue_data_in,
1927         .queue_status                   = tcm_qla2xxx_queue_status,
1928         .queue_tm_rsp                   = tcm_qla2xxx_queue_tm_rsp,
1929         /*
1930          * Setup function pointers for generic logic in
1931          * target_core_fabric_configfs.c
1932          */
1933         .fabric_make_wwn                = tcm_qla2xxx_npiv_make_lport,
1934         .fabric_drop_wwn                = tcm_qla2xxx_npiv_drop_lport,
1935         .fabric_make_tpg                = tcm_qla2xxx_npiv_make_tpg,
1936         .fabric_drop_tpg                = tcm_qla2xxx_drop_tpg,
1937         .fabric_post_link               = NULL,
1938         .fabric_pre_unlink              = NULL,
1939         .fabric_make_np                 = NULL,
1940         .fabric_drop_np                 = NULL,
1941         .fabric_make_nodeacl            = tcm_qla2xxx_make_nodeacl,
1942         .fabric_drop_nodeacl            = tcm_qla2xxx_drop_nodeacl,
1943 };
1944
1945 static int tcm_qla2xxx_register_configfs(void)
1946 {
1947         struct target_fabric_configfs *fabric, *npiv_fabric;
1948         int ret;
1949
1950         pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on "
1951             UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname,
1952             utsname()->machine);
1953         /*
1954          * Register the top level struct config_item_type with TCM core
1955          */
1956         fabric = target_fabric_configfs_init(THIS_MODULE, "qla2xxx");
1957         if (IS_ERR(fabric)) {
1958                 pr_err("target_fabric_configfs_init() failed\n");
1959                 return PTR_ERR(fabric);
1960         }
1961         /*
1962          * Setup fabric->tf_ops from our local tcm_qla2xxx_ops
1963          */
1964         fabric->tf_ops = tcm_qla2xxx_ops;
1965         /*
1966          * Setup default attribute lists for various fabric->tf_cit_tmpl
1967          */
1968         fabric->tf_cit_tmpl.tfc_wwn_cit.ct_attrs = tcm_qla2xxx_wwn_attrs;
1969         fabric->tf_cit_tmpl.tfc_tpg_base_cit.ct_attrs = tcm_qla2xxx_tpg_attrs;
1970         fabric->tf_cit_tmpl.tfc_tpg_attrib_cit.ct_attrs =
1971                                                 tcm_qla2xxx_tpg_attrib_attrs;
1972         fabric->tf_cit_tmpl.tfc_tpg_param_cit.ct_attrs = NULL;
1973         fabric->tf_cit_tmpl.tfc_tpg_np_base_cit.ct_attrs = NULL;
1974         fabric->tf_cit_tmpl.tfc_tpg_nacl_base_cit.ct_attrs = NULL;
1975         fabric->tf_cit_tmpl.tfc_tpg_nacl_attrib_cit.ct_attrs = NULL;
1976         fabric->tf_cit_tmpl.tfc_tpg_nacl_auth_cit.ct_attrs = NULL;
1977         fabric->tf_cit_tmpl.tfc_tpg_nacl_param_cit.ct_attrs = NULL;
1978         /*
1979          * Register the fabric for use within TCM
1980          */
1981         ret = target_fabric_configfs_register(fabric);
1982         if (ret < 0) {
1983                 pr_err("target_fabric_configfs_register() failed for TCM_QLA2XXX\n");
1984                 return ret;
1985         }
1986         /*
1987          * Setup our local pointer to *fabric
1988          */
1989         tcm_qla2xxx_fabric_configfs = fabric;
1990         pr_debug("TCM_QLA2XXX[0] - Set fabric -> tcm_qla2xxx_fabric_configfs\n");
1991
1992         /*
1993          * Register the top level struct config_item_type for NPIV with TCM core
1994          */
1995         npiv_fabric = target_fabric_configfs_init(THIS_MODULE, "qla2xxx_npiv");
1996         if (IS_ERR(npiv_fabric)) {
1997                 pr_err("target_fabric_configfs_init() failed\n");
1998                 ret = PTR_ERR(npiv_fabric);
1999                 goto out_fabric;
2000         }
2001         /*
2002          * Setup fabric->tf_ops from our local tcm_qla2xxx_npiv_ops
2003          */
2004         npiv_fabric->tf_ops = tcm_qla2xxx_npiv_ops;
2005         /*
2006          * Setup default attribute lists for various npiv_fabric->tf_cit_tmpl
2007          */
2008         npiv_fabric->tf_cit_tmpl.tfc_wwn_cit.ct_attrs = tcm_qla2xxx_wwn_attrs;
2009         npiv_fabric->tf_cit_tmpl.tfc_tpg_base_cit.ct_attrs =
2010             tcm_qla2xxx_npiv_tpg_attrs;
2011         npiv_fabric->tf_cit_tmpl.tfc_tpg_attrib_cit.ct_attrs = NULL;
2012         npiv_fabric->tf_cit_tmpl.tfc_tpg_param_cit.ct_attrs = NULL;
2013         npiv_fabric->tf_cit_tmpl.tfc_tpg_np_base_cit.ct_attrs = NULL;
2014         npiv_fabric->tf_cit_tmpl.tfc_tpg_nacl_base_cit.ct_attrs = NULL;
2015         npiv_fabric->tf_cit_tmpl.tfc_tpg_nacl_attrib_cit.ct_attrs = NULL;
2016         npiv_fabric->tf_cit_tmpl.tfc_tpg_nacl_auth_cit.ct_attrs = NULL;
2017         npiv_fabric->tf_cit_tmpl.tfc_tpg_nacl_param_cit.ct_attrs = NULL;
2018         /*
2019          * Register the npiv_fabric for use within TCM
2020          */
2021         ret = target_fabric_configfs_register(npiv_fabric);
2022         if (ret < 0) {
2023                 pr_err("target_fabric_configfs_register() failed for TCM_QLA2XXX\n");
2024                 goto out_fabric;
2025         }
2026         /*
2027          * Setup our local pointer to *npiv_fabric
2028          */
2029         tcm_qla2xxx_npiv_fabric_configfs = npiv_fabric;
2030         pr_debug("TCM_QLA2XXX[0] - Set fabric -> tcm_qla2xxx_npiv_fabric_configfs\n");
2031
2032         tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free",
2033                                                 WQ_MEM_RECLAIM, 0);
2034         if (!tcm_qla2xxx_free_wq) {
2035                 ret = -ENOMEM;
2036                 goto out_fabric_npiv;
2037         }
2038
2039         tcm_qla2xxx_cmd_wq = alloc_workqueue("tcm_qla2xxx_cmd", 0, 0);
2040         if (!tcm_qla2xxx_cmd_wq) {
2041                 ret = -ENOMEM;
2042                 goto out_free_wq;
2043         }
2044
2045         return 0;
2046
2047 out_free_wq:
2048         destroy_workqueue(tcm_qla2xxx_free_wq);
2049 out_fabric_npiv:
2050         target_fabric_configfs_deregister(tcm_qla2xxx_npiv_fabric_configfs);
2051 out_fabric:
2052         target_fabric_configfs_deregister(tcm_qla2xxx_fabric_configfs);
2053         return ret;
2054 }
2055
2056 static void tcm_qla2xxx_deregister_configfs(void)
2057 {
2058         destroy_workqueue(tcm_qla2xxx_cmd_wq);
2059         destroy_workqueue(tcm_qla2xxx_free_wq);
2060
2061         target_fabric_configfs_deregister(tcm_qla2xxx_fabric_configfs);
2062         tcm_qla2xxx_fabric_configfs = NULL;
2063         pr_debug("TCM_QLA2XXX[0] - Cleared tcm_qla2xxx_fabric_configfs\n");
2064
2065         target_fabric_configfs_deregister(tcm_qla2xxx_npiv_fabric_configfs);
2066         tcm_qla2xxx_npiv_fabric_configfs = NULL;
2067         pr_debug("TCM_QLA2XXX[0] - Cleared tcm_qla2xxx_npiv_fabric_configfs\n");
2068 }
2069
2070 static int __init tcm_qla2xxx_init(void)
2071 {
2072         int ret;
2073
2074         ret = tcm_qla2xxx_register_configfs();
2075         if (ret < 0)
2076                 return ret;
2077
2078         return 0;
2079 }
2080
2081 static void __exit tcm_qla2xxx_exit(void)
2082 {
2083         tcm_qla2xxx_deregister_configfs();
2084 }
2085
2086 MODULE_DESCRIPTION("TCM QLA2XXX series NPIV enabled fabric driver");
2087 MODULE_LICENSE("GPL");
2088 module_init(tcm_qla2xxx_init);
2089 module_exit(tcm_qla2xxx_exit);