drivers/scsi/qla2xxx/tcm_qla2xxx.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*******************************************************************************
   3  * This file contains tcm implementation using v4 configfs fabric infrastructure
   4  * for QLogic target mode HBAs
   5  *
   6  * (c) Copyright 2010-2013 Datera, Inc.
   7  *
   8  * Author: Nicholas A. Bellinger <nab@daterainc.com>
   9  *
  10  * tcm_qla2xxx_parse_wwn() and tcm_qla2xxx_format_wwn() contains code from
  11  * the TCM_FC / Open-FCoE.org fabric module.
  12  *
  13  * Copyright (c) 2010 Cisco Systems, Inc
  14  *
  15  ****************************************************************************/
  16
  17
  18 #include <linux/module.h>
  19 #include <linux/utsname.h>
  20 #include <linux/vmalloc.h>
  21 #include <linux/list.h>
  22 #include <linux/slab.h>
  23 #include <linux/types.h>
  24 #include <linux/string.h>
  25 #include <linux/configfs.h>
  26 #include <linux/ctype.h>
  27 #include <asm/unaligned.h>
  28 #include <scsi/scsi_host.h>
  29 #include <target/target_core_base.h>
  30 #include <target/target_core_fabric.h>
  31
  32 #include "qla_def.h"
  33 #include "qla_target.h"
  34 #include "tcm_qla2xxx.h"
  35
  36 static struct workqueue_struct *tcm_qla2xxx_free_wq;
  37
  38 /*
  39  * Parse WWN.
  40  * If strict, we require lower-case hex and colon separators to be sure
  41  * the name is the same as what would be generated by ft_format_wwn()
  42  * so the name and wwn are mapped one-to-one.
  43  */
  44 static ssize_t tcm_qla2xxx_parse_wwn(const char *name, u64 *wwn, int strict)
  45 {
  46         const char *cp;
  47         char c;
  48         u32 nibble;
  49         u32 byte = 0;
  50         u32 pos = 0;
  51         u32 err;
  52
  53         *wwn = 0;
  54         for (cp = name; cp < &name[TCM_QLA2XXX_NAMELEN - 1]; cp++) {
  55                 c = *cp;
  56                 if (c == '\n' && cp[1] == '\0')
  57                         continue;
  58                 if (strict && pos++ == 2 && byte++ < 7) {
  59                         pos = 0;
  60                         if (c == ':')
  61                                 continue;
  62                         err = 1;
  63                         goto fail;
  64                 }
  65                 if (c == '\0') {
  66                         err = 2;
  67                         if (strict && byte != 8)
  68                                 goto fail;
  69                         return cp - name;
  70                 }
  71                 err = 3;
  72                 if (isdigit(c))
  73                         nibble = c - '0';
  74                 else if (isxdigit(c) && (islower(c) || !strict))
  75                         nibble = tolower(c) - 'a' + 10;
  76                 else
  77                         goto fail;
  78                 *wwn = (*wwn << 4) | nibble;
  79         }
  80         err = 4;
  81 fail:
  82         pr_debug("err %u len %zu pos %u byte %u\n",
  83                         err, cp - name, pos, byte);
  84         return -1;
  85 }
  86
  87 static ssize_t tcm_qla2xxx_format_wwn(char *buf, size_t len, u64 wwn)
  88 {
  89         u8 b[8];
  90
  91         put_unaligned_be64(wwn, b);
  92         return snprintf(buf, len,
  93                 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x",
  94                 b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7]);
  95 }
  96
  97 /*
  98  * From drivers/scsi/scsi_transport_fc.c:fc_parse_wwn
  99  */
 100 static int tcm_qla2xxx_npiv_extract_wwn(const char *ns, u64 *nm)
 101 {
 102         unsigned int i, j;
 103         u8 wwn[8];
 104
 105         memset(wwn, 0, sizeof(wwn));
 106
 107         /* Validate and store the new name */
 108         for (i = 0, j = 0; i < 16; i++) {
 109                 int value;
 110
 111                 value = hex_to_bin(*ns++);
 112                 if (value >= 0)
 113                         j = (j << 4) | value;
 114                 else
 115                         return -EINVAL;
 116
 117                 if (i % 2) {
 118                         wwn[i/2] = j & 0xff;
 119                         j = 0;
 120                 }
 121         }
 122
 123         *nm = wwn_to_u64(wwn);
 124         return 0;
 125 }
 126
 127 /*
 128  * This parsing logic follows drivers/scsi/scsi_transport_fc.c:
 129  * store_fc_host_vport_create()
 130  */
 131 static int tcm_qla2xxx_npiv_parse_wwn(
 132         const char *name,
 133         size_t count,
 134         u64 *wwpn,
 135         u64 *wwnn)
 136 {
 137         unsigned int cnt = count;
 138         int rc;
 139
 140         *wwpn = 0;
 141         *wwnn = 0;
 142
 143         /* count may include a LF at end of string */
 144         if (name[cnt-1] == '\n' || name[cnt-1] == 0)
 145                 cnt--;
 146
 147         /* validate we have enough characters for WWPN */
 148         if ((cnt != (16+1+16)) || (name[16] != ':'))
 149                 return -EINVAL;
 150
 151         rc = tcm_qla2xxx_npiv_extract_wwn(&name[0], wwpn);
 152         if (rc != 0)
 153                 return rc;
 154
 155         rc = tcm_qla2xxx_npiv_extract_wwn(&name[17], wwnn);
 156         if (rc != 0)
 157                 return rc;
 158
 159         return 0;
 160 }
 161
 162 static char *tcm_qla2xxx_get_fabric_wwn(struct se_portal_group *se_tpg)
 163 {
 164         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 165                                 struct tcm_qla2xxx_tpg, se_tpg);
 166         struct tcm_qla2xxx_lport *lport = tpg->lport;
 167
 168         return lport->lport_naa_name;
 169 }
 170
 171 static u16 tcm_qla2xxx_get_tag(struct se_portal_group *se_tpg)
 172 {
 173         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 174                                 struct tcm_qla2xxx_tpg, se_tpg);
 175         return tpg->lport_tpgt;
 176 }
 177
 178 static int tcm_qla2xxx_check_demo_mode(struct se_portal_group *se_tpg)
 179 {
 180         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 181                                 struct tcm_qla2xxx_tpg, se_tpg);
 182
 183         return tpg->tpg_attrib.generate_node_acls;
 184 }
 185
 186 static int tcm_qla2xxx_check_demo_mode_cache(struct se_portal_group *se_tpg)
 187 {
 188         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 189                                 struct tcm_qla2xxx_tpg, se_tpg);
 190
 191         return tpg->tpg_attrib.cache_dynamic_acls;
 192 }
 193
 194 static int tcm_qla2xxx_check_demo_write_protect(struct se_portal_group *se_tpg)
 195 {
 196         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 197                                 struct tcm_qla2xxx_tpg, se_tpg);
 198
 199         return tpg->tpg_attrib.demo_mode_write_protect;
 200 }
 201
 202 static int tcm_qla2xxx_check_prod_write_protect(struct se_portal_group *se_tpg)
 203 {
 204         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 205                                 struct tcm_qla2xxx_tpg, se_tpg);
 206
 207         return tpg->tpg_attrib.prod_mode_write_protect;
 208 }
 209
 210 static int tcm_qla2xxx_check_demo_mode_login_only(struct se_portal_group *se_tpg)
 211 {
 212         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 213                                 struct tcm_qla2xxx_tpg, se_tpg);
 214
 215         return tpg->tpg_attrib.demo_mode_login_only;
 216 }
 217
 218 static int tcm_qla2xxx_check_prot_fabric_only(struct se_portal_group *se_tpg)
 219 {
 220         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 221                                 struct tcm_qla2xxx_tpg, se_tpg);
 222
 223         return tpg->tpg_attrib.fabric_prot_type;
 224 }
 225
 226 static u32 tcm_qla2xxx_tpg_get_inst_index(struct se_portal_group *se_tpg)
 227 {
 228         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 229                                 struct tcm_qla2xxx_tpg, se_tpg);
 230
 231         return tpg->lport_tpgt;
 232 }
 233
 234 static void tcm_qla2xxx_complete_mcmd(struct work_struct *work)
 235 {
 236         struct qla_tgt_mgmt_cmd *mcmd = container_of(work,
 237                         struct qla_tgt_mgmt_cmd, free_work);
 238
 239         transport_generic_free_cmd(&mcmd->se_cmd, 0);
 240 }
 241
 242 /*
 243  * Called from qla_target_template->free_mcmd(), and will call
 244  * tcm_qla2xxx_release_cmd() via normal struct target_core_fabric_ops
 245  * release callback.  qla_hw_data->hardware_lock is expected to be held
 246  */
 247 static void tcm_qla2xxx_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
 248 {
 249         if (!mcmd)
 250                 return;
 251         INIT_WORK(&mcmd->free_work, tcm_qla2xxx_complete_mcmd);
 252         queue_work(tcm_qla2xxx_free_wq, &mcmd->free_work);
 253 }
 254
 255 static void tcm_qla2xxx_complete_free(struct work_struct *work)
 256 {
 257         struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
 258
 259         cmd->cmd_in_wq = 0;
 260
 261         WARN_ON(cmd->trc_flags & TRC_CMD_FREE);
 262
 263         /* To do: protect all tgt_counters manipulations with proper locking. */
 264         cmd->qpair->tgt_counters.qla_core_ret_sta_ctio++;
 265         cmd->trc_flags |= TRC_CMD_FREE;
 266         cmd->cmd_sent_to_fw = 0;
 267
 268         transport_generic_free_cmd(&cmd->se_cmd, 0);
 269 }
 270
 271 static struct qla_tgt_cmd *tcm_qla2xxx_get_cmd(struct fc_port *sess)
 272 {
 273         struct se_session *se_sess = sess->se_sess;
 274         struct qla_tgt_cmd *cmd;
 275         int tag, cpu;
 276
 277         tag = sbitmap_queue_get(&se_sess->sess_tag_pool, &cpu);
 278         if (tag < 0)
 279                 return NULL;
 280
 281         cmd = &((struct qla_tgt_cmd *)se_sess->sess_cmd_map)[tag];
 282         memset(cmd, 0, sizeof(struct qla_tgt_cmd));
 283         cmd->se_cmd.map_tag = tag;
 284         cmd->se_cmd.map_cpu = cpu;
 285
 286         return cmd;
 287 }
 288
 289 static void tcm_qla2xxx_rel_cmd(struct qla_tgt_cmd *cmd)
 290 {
 291         target_free_tag(cmd->sess->se_sess, &cmd->se_cmd);
 292 }
 293
 294 /*
 295  * Called from qla_target_template->free_cmd(), and will call
 296  * tcm_qla2xxx_release_cmd via normal struct target_core_fabric_ops
 297  * release callback.  qla_hw_data->hardware_lock is expected to be held
 298  */
 299 static void tcm_qla2xxx_free_cmd(struct qla_tgt_cmd *cmd)
 300 {
 301         cmd->qpair->tgt_counters.core_qla_free_cmd++;
 302         cmd->cmd_in_wq = 1;
 303
 304         WARN_ON(cmd->trc_flags & TRC_CMD_DONE);
 305         cmd->trc_flags |= TRC_CMD_DONE;
 306
 307         INIT_WORK(&cmd->work, tcm_qla2xxx_complete_free);
 308         queue_work_on(smp_processor_id(), tcm_qla2xxx_free_wq, &cmd->work);
 309 }
 310
 311 /*
 312  * Called from struct target_core_fabric_ops->check_stop_free() context
 313  */
 314 static int tcm_qla2xxx_check_stop_free(struct se_cmd *se_cmd)
 315 {
 316         struct qla_tgt_cmd *cmd;
 317
 318         if ((se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) == 0) {
 319                 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
 320                 cmd->trc_flags |= TRC_CMD_CHK_STOP;
 321         }
 322
 323         return target_put_sess_cmd(se_cmd);
 324 }
 325
 326 /* tcm_qla2xxx_release_cmd - Callback from TCM Core to release underlying
 327  * fabric descriptor @se_cmd command to release
 328  */
 329 static void tcm_qla2xxx_release_cmd(struct se_cmd *se_cmd)
 330 {
 331         struct qla_tgt_cmd *cmd;
 332
 333         if (se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) {
 334                 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
 335                                 struct qla_tgt_mgmt_cmd, se_cmd);
 336                 qlt_free_mcmd(mcmd);
 337                 return;
 338         }
 339         cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
 340
 341         if (WARN_ON(cmd->cmd_sent_to_fw))
 342                 return;
 343
 344         qlt_free_cmd(cmd);
 345 }
 346
 347 static void tcm_qla2xxx_release_session(struct kref *kref)
 348 {
 349         struct fc_port  *sess = container_of(kref,
 350             struct fc_port, sess_kref);
 351
 352         qlt_unreg_sess(sess);
 353 }
 354
 355 static void tcm_qla2xxx_put_sess(struct fc_port *sess)
 356 {
 357         if (!sess)
 358                 return;
 359
 360         kref_put(&sess->sess_kref, tcm_qla2xxx_release_session);
 361 }
 362
 363 static void tcm_qla2xxx_close_session(struct se_session *se_sess)
 364 {
 365         struct fc_port *sess = se_sess->fabric_sess_ptr;
 366         struct scsi_qla_host *vha;
 367         unsigned long flags;
 368
 369         BUG_ON(!sess);
 370         vha = sess->vha;
 371
 372         spin_lock_irqsave(&vha->hw->tgt.sess_lock, flags);
 373         target_sess_cmd_list_set_waiting(se_sess);
 374         spin_unlock_irqrestore(&vha->hw->tgt.sess_lock, flags);
 375
 376         sess->explicit_logout = 1;
 377         tcm_qla2xxx_put_sess(sess);
 378 }
 379
 380 static u32 tcm_qla2xxx_sess_get_index(struct se_session *se_sess)
 381 {
 382         return 0;
 383 }
 384
 385 static int tcm_qla2xxx_write_pending(struct se_cmd *se_cmd)
 386 {
 387         struct qla_tgt_cmd *cmd = container_of(se_cmd,
 388                                 struct qla_tgt_cmd, se_cmd);
 389
 390         if (cmd->aborted) {
 391                 /* Cmd can loop during Q-full.  tcm_qla2xxx_aborted_task
 392                  * can get ahead of this cmd. tcm_qla2xxx_aborted_task
 393                  * already kick start the free.
 394                  */
 395                 pr_debug("write_pending aborted cmd[%p] refcount %d "
 396                         "transport_state %x, t_state %x, se_cmd_flags %x\n",
 397                         cmd, kref_read(&cmd->se_cmd.cmd_kref),
 398                         cmd->se_cmd.transport_state,
 399                         cmd->se_cmd.t_state,
 400                         cmd->se_cmd.se_cmd_flags);
 401                 transport_generic_request_failure(&cmd->se_cmd,
 402                         TCM_CHECK_CONDITION_ABORT_CMD);
 403                 return 0;
 404         }
 405         cmd->trc_flags |= TRC_XFR_RDY;
 406         cmd->bufflen = se_cmd->data_length;
 407         cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
 408
 409         cmd->sg_cnt = se_cmd->t_data_nents;
 410         cmd->sg = se_cmd->t_data_sg;
 411
 412         cmd->prot_sg_cnt = se_cmd->t_prot_nents;
 413         cmd->prot_sg = se_cmd->t_prot_sg;
 414         cmd->blk_sz  = se_cmd->se_dev->dev_attrib.block_size;
 415         se_cmd->pi_err = 0;
 416
 417         /*
 418          * qla_target.c:qlt_rdy_to_xfer() will call dma_map_sg() to setup
 419          * the SGL mappings into PCIe memory for incoming FCP WRITE data.
 420          */
 421         return qlt_rdy_to_xfer(cmd);
 422 }
 423
 424 static void tcm_qla2xxx_set_default_node_attrs(struct se_node_acl *nacl)
 425 {
 426         return;
 427 }
 428
 429 static int tcm_qla2xxx_get_cmd_state(struct se_cmd *se_cmd)
 430 {
 431         if (!(se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB)) {
 432                 struct qla_tgt_cmd *cmd = container_of(se_cmd,
 433                                 struct qla_tgt_cmd, se_cmd);
 434                 return cmd->state;
 435         }
 436
 437         return 0;
 438 }
 439
 440 /*
 441  * Called from process context in qla_target.c:qlt_do_work() code
 442  */
 443 static int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd,
 444         unsigned char *cdb, uint32_t data_length, int fcp_task_attr,
 445         int data_dir, int bidi)
 446 {
 447         struct se_cmd *se_cmd = &cmd->se_cmd;
 448         struct se_session *se_sess;
 449         struct fc_port *sess;
 450 #ifdef CONFIG_TCM_QLA2XXX_DEBUG
 451         struct se_portal_group *se_tpg;
 452         struct tcm_qla2xxx_tpg *tpg;
 453 #endif
 454         int flags = TARGET_SCF_ACK_KREF;
 455
 456         if (bidi)
 457                 flags |= TARGET_SCF_BIDI_OP;
 458
 459         if (se_cmd->cpuid != WORK_CPU_UNBOUND)
 460                 flags |= TARGET_SCF_USE_CPUID;
 461
 462         sess = cmd->sess;
 463         if (!sess) {
 464                 pr_err("Unable to locate struct fc_port from qla_tgt_cmd\n");
 465                 return -EINVAL;
 466         }
 467
 468         se_sess = sess->se_sess;
 469         if (!se_sess) {
 470                 pr_err("Unable to locate active struct se_session\n");
 471                 return -EINVAL;
 472         }
 473
 474 #ifdef CONFIG_TCM_QLA2XXX_DEBUG
 475         se_tpg = se_sess->se_tpg;
 476         tpg = container_of(se_tpg, struct tcm_qla2xxx_tpg, se_tpg);
 477         if (unlikely(tpg->tpg_attrib.jam_host)) {
 478                 /* return, and dont run target_submit_cmd,discarding command */
 479                 return 0;
 480         }
 481 #endif
 482
 483         cmd->qpair->tgt_counters.qla_core_sbt_cmd++;
 484         return target_submit_cmd(se_cmd, se_sess, cdb, &cmd->sense_buffer[0],
 485                                 cmd->unpacked_lun, data_length, fcp_task_attr,
 486                                 data_dir, flags);
 487 }
 488
 489 static void tcm_qla2xxx_handle_data_work(struct work_struct *work)
 490 {
 491         struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
 492
 493         /*
 494          * Ensure that the complete FCP WRITE payload has been received.
 495          * Otherwise return an exception via CHECK_CONDITION status.
 496          */
 497         cmd->cmd_in_wq = 0;
 498         cmd->cmd_sent_to_fw = 0;
 499         if (cmd->aborted) {
 500                 transport_generic_request_failure(&cmd->se_cmd,
 501                         TCM_CHECK_CONDITION_ABORT_CMD);
 502                 return;
 503         }
 504
 505         cmd->qpair->tgt_counters.qla_core_ret_ctio++;
 506         if (!cmd->write_data_transferred) {
 507                 switch (cmd->dif_err_code) {
 508                 case DIF_ERR_GRD:
 509                         cmd->se_cmd.pi_err =
 510                             TCM_LOGICAL_BLOCK_GUARD_CHECK_FAILED;
 511                         break;
 512                 case DIF_ERR_REF:
 513                         cmd->se_cmd.pi_err =
 514                             TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED;
 515                         break;
 516                 case DIF_ERR_APP:
 517                         cmd->se_cmd.pi_err =
 518                             TCM_LOGICAL_BLOCK_APP_TAG_CHECK_FAILED;
 519                         break;
 520                 case DIF_ERR_NONE:
 521                 default:
 522                         break;
 523                 }
 524
 525                 if (cmd->se_cmd.pi_err)
 526                         transport_generic_request_failure(&cmd->se_cmd,
 527                                 cmd->se_cmd.pi_err);
 528                 else
 529                         transport_generic_request_failure(&cmd->se_cmd,
 530                                 TCM_CHECK_CONDITION_ABORT_CMD);
 531
 532                 return;
 533         }
 534
 535         return target_execute_cmd(&cmd->se_cmd);
 536 }
 537
 538 /*
 539  * Called from qla_target.c:qlt_do_ctio_completion()
 540  */
 541 static void tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd)
 542 {
 543         cmd->trc_flags |= TRC_DATA_IN;
 544         cmd->cmd_in_wq = 1;
 545         INIT_WORK(&cmd->work, tcm_qla2xxx_handle_data_work);
 546         queue_work_on(smp_processor_id(), tcm_qla2xxx_free_wq, &cmd->work);
 547 }
 548
 549 static int tcm_qla2xxx_chk_dif_tags(uint32_t tag)
 550 {
 551         return 0;
 552 }
 553
 554 static int tcm_qla2xxx_dif_tags(struct qla_tgt_cmd *cmd,
 555     uint16_t *pfw_prot_opts)
 556 {
 557         struct se_cmd *se_cmd = &cmd->se_cmd;
 558
 559         if (!(se_cmd->prot_checks & TARGET_DIF_CHECK_GUARD))
 560                 *pfw_prot_opts |= PO_DISABLE_GUARD_CHECK;
 561
 562         if (!(se_cmd->prot_checks & TARGET_DIF_CHECK_APPTAG))
 563                 *pfw_prot_opts |= PO_DIS_APP_TAG_VALD;
 564
 565         return 0;
 566 }
 567
 568 /*
 569  * Called from qla_target.c:qlt_issue_task_mgmt()
 570  */
 571 static int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *mcmd, u64 lun,
 572         uint16_t tmr_func, uint32_t tag)
 573 {
 574         struct fc_port *sess = mcmd->sess;
 575         struct se_cmd *se_cmd = &mcmd->se_cmd;
 576         int transl_tmr_func = 0;
 577         int flags = TARGET_SCF_ACK_KREF;
 578
 579         switch (tmr_func) {
 580         case QLA_TGT_ABTS:
 581                 pr_debug("%ld: ABTS received\n", sess->vha->host_no);
 582                 transl_tmr_func = TMR_ABORT_TASK;
 583                 flags |= TARGET_SCF_LOOKUP_LUN_FROM_TAG;
 584                 break;
 585         case QLA_TGT_2G_ABORT_TASK:
 586                 pr_debug("%ld: 2G Abort Task received\n", sess->vha->host_no);
 587                 transl_tmr_func = TMR_ABORT_TASK;
 588                 break;
 589         case QLA_TGT_CLEAR_ACA:
 590                 pr_debug("%ld: CLEAR_ACA received\n", sess->vha->host_no);
 591                 transl_tmr_func = TMR_CLEAR_ACA;
 592                 break;
 593         case QLA_TGT_TARGET_RESET:
 594                 pr_debug("%ld: TARGET_RESET received\n", sess->vha->host_no);
 595                 transl_tmr_func = TMR_TARGET_WARM_RESET;
 596                 break;
 597         case QLA_TGT_LUN_RESET:
 598                 pr_debug("%ld: LUN_RESET received\n", sess->vha->host_no);
 599                 transl_tmr_func = TMR_LUN_RESET;
 600                 break;
 601         case QLA_TGT_CLEAR_TS:
 602                 pr_debug("%ld: CLEAR_TS received\n", sess->vha->host_no);
 603                 transl_tmr_func = TMR_CLEAR_TASK_SET;
 604                 break;
 605         case QLA_TGT_ABORT_TS:
 606                 pr_debug("%ld: ABORT_TS received\n", sess->vha->host_no);
 607                 transl_tmr_func = TMR_ABORT_TASK_SET;
 608                 break;
 609         default:
 610                 pr_debug("%ld: Unknown task mgmt fn 0x%x\n",
 611                     sess->vha->host_no, tmr_func);
 612                 return -ENOSYS;
 613         }
 614
 615         return target_submit_tmr(se_cmd, sess->se_sess, NULL, lun, mcmd,
 616             transl_tmr_func, GFP_ATOMIC, tag, flags);
 617 }
 618
 619 static struct qla_tgt_cmd *tcm_qla2xxx_find_cmd_by_tag(struct fc_port *sess,
 620     uint64_t tag)
 621 {
 622         struct qla_tgt_cmd *cmd = NULL;
 623         struct se_cmd *secmd;
 624         unsigned long flags;
 625
 626         if (!sess->se_sess)
 627                 return NULL;
 628
 629         spin_lock_irqsave(&sess->se_sess->sess_cmd_lock, flags);
 630         list_for_each_entry(secmd, &sess->se_sess->sess_cmd_list, se_cmd_list) {
 631                 /* skip task management functions, including tmr->task_cmd */
 632                 if (secmd->se_cmd_flags & SCF_SCSI_TMR_CDB)
 633                         continue;
 634
 635                 if (secmd->tag == tag) {
 636                         cmd = container_of(secmd, struct qla_tgt_cmd, se_cmd);
 637                         break;
 638                 }
 639         }
 640         spin_unlock_irqrestore(&sess->se_sess->sess_cmd_lock, flags);
 641
 642         return cmd;
 643 }
 644
 645 static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd)
 646 {
 647         struct qla_tgt_cmd *cmd = container_of(se_cmd,
 648                                 struct qla_tgt_cmd, se_cmd);
 649         struct scsi_qla_host *vha = cmd->vha;
 650
 651         if (cmd->aborted) {
 652                 /* Cmd can loop during Q-full.  tcm_qla2xxx_aborted_task
 653                  * can get ahead of this cmd. tcm_qla2xxx_aborted_task
 654                  * already kick start the free.
 655                  */
 656                 pr_debug("queue_data_in aborted cmd[%p] refcount %d "
 657                         "transport_state %x, t_state %x, se_cmd_flags %x\n",
 658                         cmd, kref_read(&cmd->se_cmd.cmd_kref),
 659                         cmd->se_cmd.transport_state,
 660                         cmd->se_cmd.t_state,
 661                         cmd->se_cmd.se_cmd_flags);
 662                 vha->hw->tgt.tgt_ops->free_cmd(cmd);
 663                 return 0;
 664         }
 665
 666         cmd->trc_flags |= TRC_XMIT_DATA;
 667         cmd->bufflen = se_cmd->data_length;
 668         cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
 669
 670         cmd->sg_cnt = se_cmd->t_data_nents;
 671         cmd->sg = se_cmd->t_data_sg;
 672         cmd->offset = 0;
 673
 674         cmd->prot_sg_cnt = se_cmd->t_prot_nents;
 675         cmd->prot_sg = se_cmd->t_prot_sg;
 676         cmd->blk_sz  = se_cmd->se_dev->dev_attrib.block_size;
 677         se_cmd->pi_err = 0;
 678
 679         /*
 680          * Now queue completed DATA_IN the qla2xxx LLD and response ring
 681          */
 682         return qlt_xmit_response(cmd, QLA_TGT_XMIT_DATA|QLA_TGT_XMIT_STATUS,
 683                                 se_cmd->scsi_status);
 684 }
 685
 686 static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd)
 687 {
 688         struct qla_tgt_cmd *cmd = container_of(se_cmd,
 689                                 struct qla_tgt_cmd, se_cmd);
 690         struct scsi_qla_host *vha = cmd->vha;
 691         int xmit_type = QLA_TGT_XMIT_STATUS;
 692
 693         if (cmd->aborted) {
 694                 /*
 695                  * Cmd can loop during Q-full. tcm_qla2xxx_aborted_task
 696                  * can get ahead of this cmd. tcm_qla2xxx_aborted_task
 697                  * already kick start the free.
 698                  */
 699                 pr_debug(
 700                     "queue_data_in aborted cmd[%p] refcount %d transport_state %x, t_state %x, se_cmd_flags %x\n",
 701                     cmd, kref_read(&cmd->se_cmd.cmd_kref),
 702                     cmd->se_cmd.transport_state, cmd->se_cmd.t_state,
 703                     cmd->se_cmd.se_cmd_flags);
 704                 vha->hw->tgt.tgt_ops->free_cmd(cmd);
 705                 return 0;
 706         }
 707         cmd->bufflen = se_cmd->data_length;
 708         cmd->sg = NULL;
 709         cmd->sg_cnt = 0;
 710         cmd->offset = 0;
 711         cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
 712         cmd->trc_flags |= TRC_XMIT_STATUS;
 713
 714         if (se_cmd->data_direction == DMA_FROM_DEVICE) {
 715                 /*
 716                  * For FCP_READ with CHECK_CONDITION status, clear cmd->bufflen
 717                  * for qla_tgt_xmit_response LLD code
 718                  */
 719                 if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
 720                         se_cmd->se_cmd_flags &= ~SCF_OVERFLOW_BIT;
 721                         se_cmd->residual_count = 0;
 722                 }
 723                 se_cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT;
 724                 se_cmd->residual_count += se_cmd->data_length;
 725
 726                 cmd->bufflen = 0;
 727         }
 728         /*
 729          * Now queue status response to qla2xxx LLD code and response ring
 730          */
 731         return qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status);
 732 }
 733
 734 static void tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd)
 735 {
 736         struct se_tmr_req *se_tmr = se_cmd->se_tmr_req;
 737         struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
 738                                 struct qla_tgt_mgmt_cmd, se_cmd);
 739
 740         pr_debug("queue_tm_rsp: mcmd: %p func: 0x%02x response: 0x%02x\n",
 741                         mcmd, se_tmr->function, se_tmr->response);
 742         /*
 743          * Do translation between TCM TM response codes and
 744          * QLA2xxx FC TM response codes.
 745          */
 746         switch (se_tmr->response) {
 747         case TMR_FUNCTION_COMPLETE:
 748                 mcmd->fc_tm_rsp = FC_TM_SUCCESS;
 749                 break;
 750         case TMR_TASK_DOES_NOT_EXIST:
 751                 mcmd->fc_tm_rsp = FC_TM_BAD_CMD;
 752                 break;
 753         case TMR_FUNCTION_REJECTED:
 754                 mcmd->fc_tm_rsp = FC_TM_REJECT;
 755                 break;
 756         case TMR_LUN_DOES_NOT_EXIST:
 757         default:
 758                 mcmd->fc_tm_rsp = FC_TM_FAILED;
 759                 break;
 760         }
 761         /*
 762          * Queue the TM response to QLA2xxx LLD to build a
 763          * CTIO response packet.
 764          */
 765         qlt_xmit_tm_rsp(mcmd);
 766 }
 767
 768 static void tcm_qla2xxx_aborted_task(struct se_cmd *se_cmd)
 769 {
 770         struct qla_tgt_cmd *cmd = container_of(se_cmd,
 771                                 struct qla_tgt_cmd, se_cmd);
 772
 773         if (qlt_abort_cmd(cmd))
 774                 return;
 775 }
 776
 777 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *,
 778                         struct tcm_qla2xxx_nacl *, struct fc_port *);
 779 /*
 780  * Expected to be called with struct qla_hw_data->tgt.sess_lock held
 781  */
 782 static void tcm_qla2xxx_clear_nacl_from_fcport_map(struct fc_port *sess)
 783 {
 784         struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
 785         struct se_portal_group *se_tpg = se_nacl->se_tpg;
 786         struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
 787         struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
 788                                 struct tcm_qla2xxx_lport, lport_wwn);
 789         struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
 790                                 struct tcm_qla2xxx_nacl, se_node_acl);
 791         void *node;
 792
 793         pr_debug("fc_rport domain: port_id 0x%06x\n", nacl->nport_id);
 794
 795         node = btree_remove32(&lport->lport_fcport_map, nacl->nport_id);
 796         if (WARN_ON(node && (node != se_nacl))) {
 797                 /*
 798                  * The nacl no longer matches what we think it should be.
 799                  * Most likely a new dynamic acl has been added while
 800                  * someone dropped the hardware lock.  It clearly is a
 801                  * bug elsewhere, but this bit can't make things worse.
 802                  */
 803                 btree_insert32(&lport->lport_fcport_map, nacl->nport_id,
 804                                node, GFP_ATOMIC);
 805         }
 806
 807         pr_debug("Removed from fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%06x\n",
 808             se_nacl, nacl->nport_wwnn, nacl->nport_id);
 809         /*
 810          * Now clear the se_nacl and session pointers from our HW lport lookup
 811          * table mapping for this initiator's fabric S_ID and LOOP_ID entries.
 812          *
 813          * This is done ahead of callbacks into tcm_qla2xxx_free_session() ->
 814          * target_wait_for_sess_cmds() before the session waits for outstanding
 815          * I/O to complete, to avoid a race between session shutdown execution
 816          * and incoming ATIOs or TMRs picking up a stale se_node_act reference.
 817          */
 818         tcm_qla2xxx_clear_sess_lookup(lport, nacl, sess);
 819 }
 820
 821 static void tcm_qla2xxx_shutdown_sess(struct fc_port *sess)
 822 {
 823         target_sess_cmd_list_set_waiting(sess->se_sess);
 824 }
 825
 826 static int tcm_qla2xxx_init_nodeacl(struct se_node_acl *se_nacl,
 827                 const char *name)
 828 {
 829         struct tcm_qla2xxx_nacl *nacl =
 830                 container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
 831         u64 wwnn;
 832
 833         if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0)
 834                 return -EINVAL;
 835
 836         nacl->nport_wwnn = wwnn;
 837         tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn);
 838
 839         return 0;
 840 }
 841
 842 /* Start items for tcm_qla2xxx_tpg_attrib_cit */
 843
 844 #define DEF_QLA_TPG_ATTRIB(name)                                        \
 845                                                                         \
 846 static ssize_t tcm_qla2xxx_tpg_attrib_##name##_show(                    \
 847                 struct config_item *item, char *page)                   \
 848 {                                                                       \
 849         struct se_portal_group *se_tpg = attrib_to_tpg(item);           \
 850         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,              \
 851                         struct tcm_qla2xxx_tpg, se_tpg);                \
 852                                                                         \
 853         return sprintf(page, "%u\n", tpg->tpg_attrib.name);     \
 854 }                                                                       \
 855                                                                         \
 856 static ssize_t tcm_qla2xxx_tpg_attrib_##name##_store(                   \
 857                 struct config_item *item, const char *page, size_t count) \
 858 {                                                                       \
 859         struct se_portal_group *se_tpg = attrib_to_tpg(item);           \
 860         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,              \
 861                         struct tcm_qla2xxx_tpg, se_tpg);                \
 862         struct tcm_qla2xxx_tpg_attrib *a = &tpg->tpg_attrib;            \
 863         unsigned long val;                                              \
 864         int ret;                                                        \
 865                                                                         \
 866         ret = kstrtoul(page, 0, &val);                                  \
 867         if (ret < 0) {                                                  \
 868                 pr_err("kstrtoul() failed with"                         \
 869                                 " ret: %d\n", ret);                     \
 870                 return -EINVAL;                                         \
 871         }                                                               \
 872                                                                         \
 873         if ((val != 0) && (val != 1)) {                                 \
 874                 pr_err("Illegal boolean value %lu\n", val);             \
 875                 return -EINVAL;                                         \
 876         }                                                               \
 877                                                                         \
 878         a->name = val;                                                  \
 879                                                                         \
 880         return count;                                                   \
 881 }                                                                       \
 882 CONFIGFS_ATTR(tcm_qla2xxx_tpg_attrib_, name)
 883
 884 DEF_QLA_TPG_ATTRIB(generate_node_acls);
 885 DEF_QLA_TPG_ATTRIB(cache_dynamic_acls);
 886 DEF_QLA_TPG_ATTRIB(demo_mode_write_protect);
 887 DEF_QLA_TPG_ATTRIB(prod_mode_write_protect);
 888 DEF_QLA_TPG_ATTRIB(demo_mode_login_only);
 889 #ifdef CONFIG_TCM_QLA2XXX_DEBUG
 890 DEF_QLA_TPG_ATTRIB(jam_host);
 891 #endif
 892
 893 static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = {
 894         &tcm_qla2xxx_tpg_attrib_attr_generate_node_acls,
 895         &tcm_qla2xxx_tpg_attrib_attr_cache_dynamic_acls,
 896         &tcm_qla2xxx_tpg_attrib_attr_demo_mode_write_protect,
 897         &tcm_qla2xxx_tpg_attrib_attr_prod_mode_write_protect,
 898         &tcm_qla2xxx_tpg_attrib_attr_demo_mode_login_only,
 899 #ifdef CONFIG_TCM_QLA2XXX_DEBUG
 900         &tcm_qla2xxx_tpg_attrib_attr_jam_host,
 901 #endif
 902         NULL,
 903 };
 904
 905 /* End items for tcm_qla2xxx_tpg_attrib_cit */
 906
 907 static ssize_t tcm_qla2xxx_tpg_enable_show(struct config_item *item,
 908                 char *page)
 909 {
 910         struct se_portal_group *se_tpg = to_tpg(item);
 911         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 912                         struct tcm_qla2xxx_tpg, se_tpg);
 913
 914         return snprintf(page, PAGE_SIZE, "%d\n",
 915                         atomic_read(&tpg->lport_tpg_enabled));
 916 }
 917
 918 static ssize_t tcm_qla2xxx_tpg_enable_store(struct config_item *item,
 919                 const char *page, size_t count)
 920 {
 921         struct se_portal_group *se_tpg = to_tpg(item);
 922         struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
 923         struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
 924                         struct tcm_qla2xxx_lport, lport_wwn);
 925         struct scsi_qla_host *vha = lport->qla_vha;
 926         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 927                         struct tcm_qla2xxx_tpg, se_tpg);
 928         unsigned long op;
 929         int rc;
 930
 931         rc = kstrtoul(page, 0, &op);
 932         if (rc < 0) {
 933                 pr_err("kstrtoul() returned %d\n", rc);
 934                 return -EINVAL;
 935         }
 936         if ((op != 1) && (op != 0)) {
 937                 pr_err("Illegal value for tpg_enable: %lu\n", op);
 938                 return -EINVAL;
 939         }
 940         if (op) {
 941                 if (atomic_read(&tpg->lport_tpg_enabled))
 942                         return -EEXIST;
 943
 944                 atomic_set(&tpg->lport_tpg_enabled, 1);
 945                 qlt_enable_vha(vha);
 946         } else {
 947                 if (!atomic_read(&tpg->lport_tpg_enabled))
 948                         return count;
 949
 950                 atomic_set(&tpg->lport_tpg_enabled, 0);
 951                 qlt_stop_phase1(vha->vha_tgt.qla_tgt);
 952         }
 953
 954         return count;
 955 }
 956
 957 static ssize_t tcm_qla2xxx_tpg_dynamic_sessions_show(struct config_item *item,
 958                 char *page)
 959 {
 960         return target_show_dynamic_sessions(to_tpg(item), page);
 961 }
 962
 963 static ssize_t tcm_qla2xxx_tpg_fabric_prot_type_store(struct config_item *item,
 964                 const char *page, size_t count)
 965 {
 966         struct se_portal_group *se_tpg = to_tpg(item);
 967         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 968                                 struct tcm_qla2xxx_tpg, se_tpg);
 969         unsigned long val;
 970         int ret = kstrtoul(page, 0, &val);
 971
 972         if (ret) {
 973                 pr_err("kstrtoul() returned %d for fabric_prot_type\n", ret);
 974                 return ret;
 975         }
 976         if (val != 0 && val != 1 && val != 3) {
 977                 pr_err("Invalid qla2xxx fabric_prot_type: %lu\n", val);
 978                 return -EINVAL;
 979         }
 980         tpg->tpg_attrib.fabric_prot_type = val;
 981
 982         return count;
 983 }
 984
 985 static ssize_t tcm_qla2xxx_tpg_fabric_prot_type_show(struct config_item *item,
 986                 char *page)
 987 {
 988         struct se_portal_group *se_tpg = to_tpg(item);
 989         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 990                                 struct tcm_qla2xxx_tpg, se_tpg);
 991
 992         return sprintf(page, "%d\n", tpg->tpg_attrib.fabric_prot_type);
 993 }
 994
 995 CONFIGFS_ATTR(tcm_qla2xxx_tpg_, enable);
 996 CONFIGFS_ATTR_RO(tcm_qla2xxx_tpg_, dynamic_sessions);
 997 CONFIGFS_ATTR(tcm_qla2xxx_tpg_, fabric_prot_type);
 998
 999 static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = {
1000         &tcm_qla2xxx_tpg_attr_enable,
1001         &tcm_qla2xxx_tpg_attr_dynamic_sessions,
1002         &tcm_qla2xxx_tpg_attr_fabric_prot_type,
1003         NULL,
1004 };
1005
1006 static struct se_portal_group *tcm_qla2xxx_make_tpg(struct se_wwn *wwn,
1007                                                     const char *name)
1008 {
1009         struct tcm_qla2xxx_lport *lport = container_of(wwn,
1010                         struct tcm_qla2xxx_lport, lport_wwn);
1011         struct tcm_qla2xxx_tpg *tpg;
1012         unsigned long tpgt;
1013         int ret;
1014
1015         if (strstr(name, "tpgt_") != name)
1016                 return ERR_PTR(-EINVAL);
1017         if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
1018                 return ERR_PTR(-EINVAL);
1019
1020         if ((tpgt != 1)) {
1021                 pr_err("In non NPIV mode, a single TPG=1 is used for HW port mappings\n");
1022                 return ERR_PTR(-ENOSYS);
1023         }
1024
1025         tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
1026         if (!tpg) {
1027                 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1028                 return ERR_PTR(-ENOMEM);
1029         }
1030         tpg->lport = lport;
1031         tpg->lport_tpgt = tpgt;
1032         /*
1033          * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
1034          * NodeACLs
1035          */
1036         tpg->tpg_attrib.generate_node_acls = 1;
1037         tpg->tpg_attrib.demo_mode_write_protect = 1;
1038         tpg->tpg_attrib.cache_dynamic_acls = 1;
1039         tpg->tpg_attrib.demo_mode_login_only = 1;
1040         tpg->tpg_attrib.jam_host = 0;
1041
1042         ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP);
1043         if (ret < 0) {
1044                 kfree(tpg);
1045                 return NULL;
1046         }
1047
1048         lport->tpg_1 = tpg;
1049
1050         return &tpg->se_tpg;
1051 }
1052
1053 static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg)
1054 {
1055         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1056                         struct tcm_qla2xxx_tpg, se_tpg);
1057         struct tcm_qla2xxx_lport *lport = tpg->lport;
1058         struct scsi_qla_host *vha = lport->qla_vha;
1059         /*
1060          * Call into qla2x_target.c LLD logic to shutdown the active
1061          * FC Nexuses and disable target mode operation for this qla_hw_data
1062          */
1063         if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stop)
1064                 qlt_stop_phase1(vha->vha_tgt.qla_tgt);
1065
1066         core_tpg_deregister(se_tpg);
1067         /*
1068          * Clear local TPG=1 pointer for non NPIV mode.
1069          */
1070         lport->tpg_1 = NULL;
1071         kfree(tpg);
1072 }
1073
1074 static ssize_t tcm_qla2xxx_npiv_tpg_enable_show(struct config_item *item,
1075                 char *page)
1076 {
1077         return tcm_qla2xxx_tpg_enable_show(item, page);
1078 }
1079
1080 static ssize_t tcm_qla2xxx_npiv_tpg_enable_store(struct config_item *item,
1081                 const char *page, size_t count)
1082 {
1083         struct se_portal_group *se_tpg = to_tpg(item);
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 CONFIGFS_ATTR(tcm_qla2xxx_npiv_tpg_, enable);
1120
1121 static struct configfs_attribute *tcm_qla2xxx_npiv_tpg_attrs[] = {
1122         &tcm_qla2xxx_npiv_tpg_attr_enable,
1123         NULL,
1124 };
1125
1126 static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg(struct se_wwn *wwn,
1127                                                          const char *name)
1128 {
1129         struct tcm_qla2xxx_lport *lport = container_of(wwn,
1130                         struct tcm_qla2xxx_lport, lport_wwn);
1131         struct tcm_qla2xxx_tpg *tpg;
1132         unsigned long tpgt;
1133         int ret;
1134
1135         if (strstr(name, "tpgt_") != name)
1136                 return ERR_PTR(-EINVAL);
1137         if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
1138                 return ERR_PTR(-EINVAL);
1139
1140         tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
1141         if (!tpg) {
1142                 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1143                 return ERR_PTR(-ENOMEM);
1144         }
1145         tpg->lport = lport;
1146         tpg->lport_tpgt = tpgt;
1147
1148         /*
1149          * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
1150          * NodeACLs
1151          */
1152         tpg->tpg_attrib.generate_node_acls = 1;
1153         tpg->tpg_attrib.demo_mode_write_protect = 1;
1154         tpg->tpg_attrib.cache_dynamic_acls = 1;
1155         tpg->tpg_attrib.demo_mode_login_only = 1;
1156
1157         ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP);
1158         if (ret < 0) {
1159                 kfree(tpg);
1160                 return NULL;
1161         }
1162         lport->tpg_1 = tpg;
1163         return &tpg->se_tpg;
1164 }
1165
1166 /*
1167  * Expected to be called with struct qla_hw_data->tgt.sess_lock held
1168  */
1169 static struct fc_port *tcm_qla2xxx_find_sess_by_s_id(scsi_qla_host_t *vha,
1170                                                      const be_id_t s_id)
1171 {
1172         struct tcm_qla2xxx_lport *lport;
1173         struct se_node_acl *se_nacl;
1174         struct tcm_qla2xxx_nacl *nacl;
1175         u32 key;
1176
1177         lport = vha->vha_tgt.target_lport_ptr;
1178         if (!lport) {
1179                 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1180                 dump_stack();
1181                 return NULL;
1182         }
1183
1184         key = sid_to_key(s_id);
1185         pr_debug("find_sess_by_s_id: 0x%06x\n", key);
1186
1187         se_nacl = btree_lookup32(&lport->lport_fcport_map, key);
1188         if (!se_nacl) {
1189                 pr_debug("Unable to locate s_id: 0x%06x\n", key);
1190                 return NULL;
1191         }
1192         pr_debug("find_sess_by_s_id: located se_nacl: %p, initiatorname: %s\n",
1193             se_nacl, se_nacl->initiatorname);
1194
1195         nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1196         if (!nacl->fc_port) {
1197                 pr_err("Unable to locate struct fc_port\n");
1198                 return NULL;
1199         }
1200
1201         return nacl->fc_port;
1202 }
1203
1204 /*
1205  * Expected to be called with struct qla_hw_data->tgt.sess_lock held
1206  */
1207 static void tcm_qla2xxx_set_sess_by_s_id(
1208         struct tcm_qla2xxx_lport *lport,
1209         struct se_node_acl *new_se_nacl,
1210         struct tcm_qla2xxx_nacl *nacl,
1211         struct se_session *se_sess,
1212         struct fc_port *fc_port,
1213         be_id_t s_id)
1214 {
1215         u32 key;
1216         void *slot;
1217         int rc;
1218
1219         key = sid_to_key(s_id);
1220         pr_debug("set_sess_by_s_id: %06x\n", key);
1221
1222         slot = btree_lookup32(&lport->lport_fcport_map, key);
1223         if (!slot) {
1224                 if (new_se_nacl) {
1225                         pr_debug("Setting up new fc_port entry to new_se_nacl\n");
1226                         nacl->nport_id = key;
1227                         rc = btree_insert32(&lport->lport_fcport_map, key,
1228                                         new_se_nacl, GFP_ATOMIC);
1229                         if (rc)
1230                                 printk(KERN_ERR "Unable to insert s_id into fcport_map: %06x\n",
1231                                     (int)key);
1232                 } else {
1233                         pr_debug("Wiping nonexisting fc_port entry\n");
1234                 }
1235
1236                 fc_port->se_sess = se_sess;
1237                 nacl->fc_port = fc_port;
1238                 return;
1239         }
1240
1241         if (nacl->fc_port) {
1242                 if (new_se_nacl == NULL) {
1243                         pr_debug("Clearing existing nacl->fc_port and fc_port entry\n");
1244                         btree_remove32(&lport->lport_fcport_map, key);
1245                         nacl->fc_port = NULL;
1246                         return;
1247                 }
1248                 pr_debug("Replacing existing nacl->fc_port and fc_port entry\n");
1249                 btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1250                 fc_port->se_sess = se_sess;
1251                 nacl->fc_port = fc_port;
1252                 return;
1253         }
1254
1255         if (new_se_nacl == NULL) {
1256                 pr_debug("Clearing existing fc_port entry\n");
1257                 btree_remove32(&lport->lport_fcport_map, key);
1258                 return;
1259         }
1260
1261         pr_debug("Replacing existing fc_port entry w/o active nacl->fc_port\n");
1262         btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1263         fc_port->se_sess = se_sess;
1264         nacl->fc_port = fc_port;
1265
1266         pr_debug("Setup nacl->fc_port %p by s_id for se_nacl: %p, initiatorname: %s\n",
1267             nacl->fc_port, new_se_nacl, new_se_nacl->initiatorname);
1268 }
1269
1270 /*
1271  * Expected to be called with struct qla_hw_data->tgt.sess_lock held
1272  */
1273 static struct fc_port *tcm_qla2xxx_find_sess_by_loop_id(
1274         scsi_qla_host_t *vha,
1275         const uint16_t loop_id)
1276 {
1277         struct tcm_qla2xxx_lport *lport;
1278         struct se_node_acl *se_nacl;
1279         struct tcm_qla2xxx_nacl *nacl;
1280         struct tcm_qla2xxx_fc_loopid *fc_loopid;
1281
1282         lport = vha->vha_tgt.target_lport_ptr;
1283         if (!lport) {
1284                 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1285                 dump_stack();
1286                 return NULL;
1287         }
1288
1289         pr_debug("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1290
1291         fc_loopid = lport->lport_loopid_map + loop_id;
1292         se_nacl = fc_loopid->se_nacl;
1293         if (!se_nacl) {
1294                 pr_debug("Unable to locate se_nacl by loop_id: 0x%04x\n",
1295                     loop_id);
1296                 return NULL;
1297         }
1298
1299         nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1300
1301         if (!nacl->fc_port) {
1302                 pr_err("Unable to locate struct fc_port\n");
1303                 return NULL;
1304         }
1305
1306         return nacl->fc_port;
1307 }
1308
1309 /*
1310  * Expected to be called with struct qla_hw_data->tgt.sess_lock held
1311  */
1312 static void tcm_qla2xxx_set_sess_by_loop_id(
1313         struct tcm_qla2xxx_lport *lport,
1314         struct se_node_acl *new_se_nacl,
1315         struct tcm_qla2xxx_nacl *nacl,
1316         struct se_session *se_sess,
1317         struct fc_port *fc_port,
1318         uint16_t loop_id)
1319 {
1320         struct se_node_acl *saved_nacl;
1321         struct tcm_qla2xxx_fc_loopid *fc_loopid;
1322
1323         pr_debug("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1324
1325         fc_loopid = &((struct tcm_qla2xxx_fc_loopid *)
1326                         lport->lport_loopid_map)[loop_id];
1327
1328         saved_nacl = fc_loopid->se_nacl;
1329         if (!saved_nacl) {
1330                 pr_debug("Setting up new fc_loopid->se_nacl to new_se_nacl\n");
1331                 fc_loopid->se_nacl = new_se_nacl;
1332                 if (fc_port->se_sess != se_sess)
1333                         fc_port->se_sess = se_sess;
1334                 if (nacl->fc_port != fc_port)
1335                         nacl->fc_port = fc_port;
1336                 return;
1337         }
1338
1339         if (nacl->fc_port) {
1340                 if (new_se_nacl == NULL) {
1341                         pr_debug("Clearing nacl->fc_port and fc_loopid->se_nacl\n");
1342                         fc_loopid->se_nacl = NULL;
1343                         nacl->fc_port = NULL;
1344                         return;
1345                 }
1346
1347                 pr_debug("Replacing existing nacl->fc_port and fc_loopid->se_nacl\n");
1348                 fc_loopid->se_nacl = new_se_nacl;
1349                 if (fc_port->se_sess != se_sess)
1350                         fc_port->se_sess = se_sess;
1351                 if (nacl->fc_port != fc_port)
1352                         nacl->fc_port = fc_port;
1353                 return;
1354         }
1355
1356         if (new_se_nacl == NULL) {
1357                 pr_debug("Clearing fc_loopid->se_nacl\n");
1358                 fc_loopid->se_nacl = NULL;
1359                 return;
1360         }
1361
1362         pr_debug("Replacing existing fc_loopid->se_nacl w/o active nacl->fc_port\n");
1363         fc_loopid->se_nacl = new_se_nacl;
1364         if (fc_port->se_sess != se_sess)
1365                 fc_port->se_sess = se_sess;
1366         if (nacl->fc_port != fc_port)
1367                 nacl->fc_port = fc_port;
1368
1369         pr_debug("Setup nacl->fc_port %p by loop_id for se_nacl: %p, initiatorname: %s\n",
1370             nacl->fc_port, new_se_nacl, new_se_nacl->initiatorname);
1371 }
1372
1373 /*
1374  * Should always be called with qla_hw_data->tgt.sess_lock held.
1375  */
1376 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *lport,
1377                 struct tcm_qla2xxx_nacl *nacl, struct fc_port *sess)
1378 {
1379         struct se_session *se_sess = sess->se_sess;
1380
1381         tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess,
1382                                      sess, port_id_to_be_id(sess->d_id));
1383         tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess,
1384                                 sess, sess->loop_id);
1385 }
1386
1387 static void tcm_qla2xxx_free_session(struct fc_port *sess)
1388 {
1389         struct qla_tgt *tgt = sess->tgt;
1390         struct qla_hw_data *ha = tgt->ha;
1391         scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
1392         struct se_session *se_sess;
1393         struct tcm_qla2xxx_lport *lport;
1394
1395         BUG_ON(in_interrupt());
1396
1397         se_sess = sess->se_sess;
1398         if (!se_sess) {
1399                 pr_err("struct fc_port->se_sess is NULL\n");
1400                 dump_stack();
1401                 return;
1402         }
1403
1404         lport = vha->vha_tgt.target_lport_ptr;
1405         if (!lport) {
1406                 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1407                 dump_stack();
1408                 return;
1409         }
1410         target_wait_for_sess_cmds(se_sess);
1411
1412         target_remove_session(se_sess);
1413 }
1414
1415 static int tcm_qla2xxx_session_cb(struct se_portal_group *se_tpg,
1416                                   struct se_session *se_sess, void *p)
1417 {
1418         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1419                                 struct tcm_qla2xxx_tpg, se_tpg);
1420         struct tcm_qla2xxx_lport *lport = tpg->lport;
1421         struct qla_hw_data *ha = lport->qla_vha->hw;
1422         struct se_node_acl *se_nacl = se_sess->se_node_acl;
1423         struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
1424                                 struct tcm_qla2xxx_nacl, se_node_acl);
1425         struct fc_port *qlat_sess = p;
1426         uint16_t loop_id = qlat_sess->loop_id;
1427         unsigned long flags;
1428
1429         /*
1430          * And now setup se_nacl and session pointers into HW lport internal
1431          * mappings for fabric S_ID and LOOP_ID.
1432          */
1433         spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1434         tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl, se_sess, qlat_sess,
1435                                      port_id_to_be_id(qlat_sess->d_id));
1436         tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl,
1437                                         se_sess, qlat_sess, loop_id);
1438         spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1439
1440         return 0;
1441 }
1442
1443 /*
1444  * Called via qlt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl()
1445  * to locate struct se_node_acl
1446  */
1447 static int tcm_qla2xxx_check_initiator_node_acl(
1448         scsi_qla_host_t *vha,
1449         unsigned char *fc_wwpn,
1450         struct fc_port *qlat_sess)
1451 {
1452         struct qla_hw_data *ha = vha->hw;
1453         struct tcm_qla2xxx_lport *lport;
1454         struct tcm_qla2xxx_tpg *tpg;
1455         struct se_session *se_sess;
1456         unsigned char port_name[36];
1457         int num_tags = (ha->cur_fw_xcb_count) ? ha->cur_fw_xcb_count :
1458                        TCM_QLA2XXX_DEFAULT_TAGS;
1459
1460         lport = vha->vha_tgt.target_lport_ptr;
1461         if (!lport) {
1462                 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1463                 dump_stack();
1464                 return -EINVAL;
1465         }
1466         /*
1467          * Locate the TPG=1 reference..
1468          */
1469         tpg = lport->tpg_1;
1470         if (!tpg) {
1471                 pr_err("Unable to locate struct tcm_qla2xxx_lport->tpg_1\n");
1472                 return -EINVAL;
1473         }
1474         /*
1475          * Format the FCP Initiator port_name into colon seperated values to
1476          * match the format by tcm_qla2xxx explict ConfigFS NodeACLs.
1477          */
1478         memset(&port_name, 0, 36);
1479         snprintf(port_name, sizeof(port_name), "%8phC", fc_wwpn);
1480         /*
1481          * Locate our struct se_node_acl either from an explict NodeACL created
1482          * via ConfigFS, or via running in TPG demo mode.
1483          */
1484         se_sess = target_setup_session(&tpg->se_tpg, num_tags,
1485                                        sizeof(struct qla_tgt_cmd),
1486                                        TARGET_PROT_ALL, port_name,
1487                                        qlat_sess, tcm_qla2xxx_session_cb);
1488         if (IS_ERR(se_sess))
1489                 return PTR_ERR(se_sess);
1490
1491         return 0;
1492 }
1493
1494 static void tcm_qla2xxx_update_sess(struct fc_port *sess, port_id_t s_id,
1495                                     uint16_t loop_id, bool conf_compl_supported)
1496 {
1497         struct qla_tgt *tgt = sess->tgt;
1498         struct qla_hw_data *ha = tgt->ha;
1499         scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
1500         struct tcm_qla2xxx_lport *lport = vha->vha_tgt.target_lport_ptr;
1501         struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
1502         struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
1503                         struct tcm_qla2xxx_nacl, se_node_acl);
1504         u32 key;
1505
1506
1507         if (sess->loop_id != loop_id || sess->d_id.b24 != s_id.b24)
1508                 pr_info("Updating session %p from port %8phC loop_id %d -> %d s_id %x:%x:%x -> %x:%x:%x\n",
1509                     sess, sess->port_name,
1510                     sess->loop_id, loop_id, sess->d_id.b.domain,
1511                     sess->d_id.b.area, sess->d_id.b.al_pa, s_id.b.domain,
1512                     s_id.b.area, s_id.b.al_pa);
1513
1514         if (sess->loop_id != loop_id) {
1515                 /*
1516                  * Because we can shuffle loop IDs around and we
1517                  * update different sessions non-atomically, we might
1518                  * have overwritten this session's old loop ID
1519                  * already, and we might end up overwriting some other
1520                  * session that will be updated later.  So we have to
1521                  * be extra careful and we can't warn about those things...
1522                  */
1523                 if (lport->lport_loopid_map[sess->loop_id].se_nacl == se_nacl)
1524                         lport->lport_loopid_map[sess->loop_id].se_nacl = NULL;
1525
1526                 lport->lport_loopid_map[loop_id].se_nacl = se_nacl;
1527
1528                 sess->loop_id = loop_id;
1529         }
1530
1531         if (sess->d_id.b24 != s_id.b24) {
1532                 key = (((u32) sess->d_id.b.domain << 16) |
1533                        ((u32) sess->d_id.b.area   <<  8) |
1534                        ((u32) sess->d_id.b.al_pa));
1535
1536                 if (btree_lookup32(&lport->lport_fcport_map, key))
1537                         WARN(btree_remove32(&lport->lport_fcport_map, key) !=
1538                             se_nacl, "Found wrong se_nacl when updating s_id %x:%x:%x\n",
1539                             sess->d_id.b.domain, sess->d_id.b.area,
1540                             sess->d_id.b.al_pa);
1541                 else
1542                         WARN(1, "No lport_fcport_map entry for s_id %x:%x:%x\n",
1543                              sess->d_id.b.domain, sess->d_id.b.area,
1544                              sess->d_id.b.al_pa);
1545
1546                 key = (((u32) s_id.b.domain << 16) |
1547                        ((u32) s_id.b.area   <<  8) |
1548                        ((u32) s_id.b.al_pa));
1549
1550                 if (btree_lookup32(&lport->lport_fcport_map, key)) {
1551                         WARN(1, "Already have lport_fcport_map entry for s_id %x:%x:%x\n",
1552                              s_id.b.domain, s_id.b.area, s_id.b.al_pa);
1553                         btree_update32(&lport->lport_fcport_map, key, se_nacl);
1554                 } else {
1555                         btree_insert32(&lport->lport_fcport_map, key, se_nacl,
1556                             GFP_ATOMIC);
1557                 }
1558
1559                 sess->d_id = s_id;
1560                 nacl->nport_id = key;
1561         }
1562
1563         sess->conf_compl_supported = conf_compl_supported;
1564
1565 }
1566
1567 /*
1568  * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path.
1569  */
1570 static struct qla_tgt_func_tmpl tcm_qla2xxx_template = {
1571         .find_cmd_by_tag        = tcm_qla2xxx_find_cmd_by_tag,
1572         .handle_cmd             = tcm_qla2xxx_handle_cmd,
1573         .handle_data            = tcm_qla2xxx_handle_data,
1574         .handle_tmr             = tcm_qla2xxx_handle_tmr,
1575         .get_cmd                = tcm_qla2xxx_get_cmd,
1576         .rel_cmd                = tcm_qla2xxx_rel_cmd,
1577         .free_cmd               = tcm_qla2xxx_free_cmd,
1578         .free_mcmd              = tcm_qla2xxx_free_mcmd,
1579         .free_session           = tcm_qla2xxx_free_session,
1580         .update_sess            = tcm_qla2xxx_update_sess,
1581         .check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl,
1582         .find_sess_by_s_id      = tcm_qla2xxx_find_sess_by_s_id,
1583         .find_sess_by_loop_id   = tcm_qla2xxx_find_sess_by_loop_id,
1584         .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map,
1585         .put_sess               = tcm_qla2xxx_put_sess,
1586         .shutdown_sess          = tcm_qla2xxx_shutdown_sess,
1587         .get_dif_tags           = tcm_qla2xxx_dif_tags,
1588         .chk_dif_tags           = tcm_qla2xxx_chk_dif_tags,
1589 };
1590
1591 static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport)
1592 {
1593         int rc;
1594
1595         rc = btree_init32(&lport->lport_fcport_map);
1596         if (rc) {
1597                 pr_err("Unable to initialize lport->lport_fcport_map btree\n");
1598                 return rc;
1599         }
1600
1601         lport->lport_loopid_map =
1602                 vzalloc(array_size(65536,
1603                                    sizeof(struct tcm_qla2xxx_fc_loopid)));
1604         if (!lport->lport_loopid_map) {
1605                 pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n",
1606                     sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1607                 btree_destroy32(&lport->lport_fcport_map);
1608                 return -ENOMEM;
1609         }
1610         pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n",
1611                sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1612         return 0;
1613 }
1614
1615 static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha,
1616                                          void *target_lport_ptr,
1617                                          u64 npiv_wwpn, u64 npiv_wwnn)
1618 {
1619         struct qla_hw_data *ha = vha->hw;
1620         struct tcm_qla2xxx_lport *lport =
1621                         (struct tcm_qla2xxx_lport *)target_lport_ptr;
1622         /*
1623          * Setup tgt_ops, local pointer to vha and target_lport_ptr
1624          */
1625         ha->tgt.tgt_ops = &tcm_qla2xxx_template;
1626         vha->vha_tgt.target_lport_ptr = target_lport_ptr;
1627         lport->qla_vha = vha;
1628
1629         return 0;
1630 }
1631
1632 static struct se_wwn *tcm_qla2xxx_make_lport(
1633         struct target_fabric_configfs *tf,
1634         struct config_group *group,
1635         const char *name)
1636 {
1637         struct tcm_qla2xxx_lport *lport;
1638         u64 wwpn;
1639         int ret = -ENODEV;
1640
1641         if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0)
1642                 return ERR_PTR(-EINVAL);
1643
1644         lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1645         if (!lport) {
1646                 pr_err("Unable to allocate struct tcm_qla2xxx_lport\n");
1647                 return ERR_PTR(-ENOMEM);
1648         }
1649         lport->lport_wwpn = wwpn;
1650         tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN,
1651                                 wwpn);
1652         sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) wwpn);
1653
1654         ret = tcm_qla2xxx_init_lport(lport);
1655         if (ret != 0)
1656                 goto out;
1657
1658         ret = qlt_lport_register(lport, wwpn, 0, 0,
1659                                  tcm_qla2xxx_lport_register_cb);
1660         if (ret != 0)
1661                 goto out_lport;
1662
1663         return &lport->lport_wwn;
1664 out_lport:
1665         vfree(lport->lport_loopid_map);
1666         btree_destroy32(&lport->lport_fcport_map);
1667 out:
1668         kfree(lport);
1669         return ERR_PTR(ret);
1670 }
1671
1672 static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn)
1673 {
1674         struct tcm_qla2xxx_lport *lport = container_of(wwn,
1675                         struct tcm_qla2xxx_lport, lport_wwn);
1676         struct scsi_qla_host *vha = lport->qla_vha;
1677         struct se_node_acl *node;
1678         u32 key = 0;
1679
1680         /*
1681          * Call into qla2x_target.c LLD logic to complete the
1682          * shutdown of struct qla_tgt after the call to
1683          * qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above..
1684          */
1685         if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stopped)
1686                 qlt_stop_phase2(vha->vha_tgt.qla_tgt);
1687
1688         qlt_lport_deregister(vha);
1689
1690         vfree(lport->lport_loopid_map);
1691         btree_for_each_safe32(&lport->lport_fcport_map, key, node)
1692                 btree_remove32(&lport->lport_fcport_map, key);
1693         btree_destroy32(&lport->lport_fcport_map);
1694         kfree(lport);
1695 }
1696
1697 static int tcm_qla2xxx_lport_register_npiv_cb(struct scsi_qla_host *base_vha,
1698                                               void *target_lport_ptr,
1699                                               u64 npiv_wwpn, u64 npiv_wwnn)
1700 {
1701         struct fc_vport *vport;
1702         struct Scsi_Host *sh = base_vha->host;
1703         struct scsi_qla_host *npiv_vha;
1704         struct tcm_qla2xxx_lport *lport =
1705                         (struct tcm_qla2xxx_lport *)target_lport_ptr;
1706         struct tcm_qla2xxx_lport *base_lport =
1707                         (struct tcm_qla2xxx_lport *)base_vha->vha_tgt.target_lport_ptr;
1708         struct fc_vport_identifiers vport_id;
1709
1710         if (qla_ini_mode_enabled(base_vha)) {
1711                 pr_err("qla2xxx base_vha not enabled for target mode\n");
1712                 return -EPERM;
1713         }
1714
1715         if (!base_lport || !base_lport->tpg_1 ||
1716             !atomic_read(&base_lport->tpg_1->lport_tpg_enabled)) {
1717                 pr_err("qla2xxx base_lport or tpg_1 not available\n");
1718                 return -EPERM;
1719         }
1720
1721         memset(&vport_id, 0, sizeof(vport_id));
1722         vport_id.port_name = npiv_wwpn;
1723         vport_id.node_name = npiv_wwnn;
1724         vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR;
1725         vport_id.vport_type = FC_PORTTYPE_NPIV;
1726         vport_id.disable = false;
1727
1728         vport = fc_vport_create(sh, 0, &vport_id);
1729         if (!vport) {
1730                 pr_err("fc_vport_create failed for qla2xxx_npiv\n");
1731                 return -ENODEV;
1732         }
1733         /*
1734          * Setup local pointer to NPIV vhba + target_lport_ptr
1735          */
1736         npiv_vha = (struct scsi_qla_host *)vport->dd_data;
1737         npiv_vha->vha_tgt.target_lport_ptr = target_lport_ptr;
1738         lport->qla_vha = npiv_vha;
1739         scsi_host_get(npiv_vha->host);
1740         return 0;
1741 }
1742
1743
1744 static struct se_wwn *tcm_qla2xxx_npiv_make_lport(
1745         struct target_fabric_configfs *tf,
1746         struct config_group *group,
1747         const char *name)
1748 {
1749         struct tcm_qla2xxx_lport *lport;
1750         u64 phys_wwpn, npiv_wwpn, npiv_wwnn;
1751         char *p, tmp[128];
1752         int ret;
1753
1754         snprintf(tmp, 128, "%s", name);
1755
1756         p = strchr(tmp, '@');
1757         if (!p) {
1758                 pr_err("Unable to locate NPIV '@' separator\n");
1759                 return ERR_PTR(-EINVAL);
1760         }
1761         *p++ = '\0';
1762
1763         if (tcm_qla2xxx_parse_wwn(tmp, &phys_wwpn, 1) < 0)
1764                 return ERR_PTR(-EINVAL);
1765
1766         if (tcm_qla2xxx_npiv_parse_wwn(p, strlen(p)+1,
1767                                        &npiv_wwpn, &npiv_wwnn) < 0)
1768                 return ERR_PTR(-EINVAL);
1769
1770         lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1771         if (!lport) {
1772                 pr_err("Unable to allocate struct tcm_qla2xxx_lport for NPIV\n");
1773                 return ERR_PTR(-ENOMEM);
1774         }
1775         lport->lport_npiv_wwpn = npiv_wwpn;
1776         lport->lport_npiv_wwnn = npiv_wwnn;
1777         sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) npiv_wwpn);
1778
1779         ret = tcm_qla2xxx_init_lport(lport);
1780         if (ret != 0)
1781                 goto out;
1782
1783         ret = qlt_lport_register(lport, phys_wwpn, npiv_wwpn, npiv_wwnn,
1784                                  tcm_qla2xxx_lport_register_npiv_cb);
1785         if (ret != 0)
1786                 goto out_lport;
1787
1788         return &lport->lport_wwn;
1789 out_lport:
1790         vfree(lport->lport_loopid_map);
1791         btree_destroy32(&lport->lport_fcport_map);
1792 out:
1793         kfree(lport);
1794         return ERR_PTR(ret);
1795 }
1796
1797 static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn)
1798 {
1799         struct tcm_qla2xxx_lport *lport = container_of(wwn,
1800                         struct tcm_qla2xxx_lport, lport_wwn);
1801         struct scsi_qla_host *npiv_vha = lport->qla_vha;
1802         struct qla_hw_data *ha = npiv_vha->hw;
1803         scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
1804
1805         scsi_host_put(npiv_vha->host);
1806         /*
1807          * Notify libfc that we want to release the vha->fc_vport
1808          */
1809         fc_vport_terminate(npiv_vha->fc_vport);
1810         scsi_host_put(base_vha->host);
1811         kfree(lport);
1812 }
1813
1814
1815 static ssize_t tcm_qla2xxx_wwn_version_show(struct config_item *item,
1816                 char *page)
1817 {
1818         return sprintf(page,
1819             "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s on %s\n",
1820             QLA2XXX_VERSION, utsname()->sysname,
1821             utsname()->machine, utsname()->release);
1822 }
1823
1824 CONFIGFS_ATTR_RO(tcm_qla2xxx_wwn_, version);
1825
1826 static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = {
1827         &tcm_qla2xxx_wwn_attr_version,
1828         NULL,
1829 };
1830
1831 static const struct target_core_fabric_ops tcm_qla2xxx_ops = {
1832         .module                         = THIS_MODULE,
1833         .fabric_name                    = "qla2xxx",
1834         .node_acl_size                  = sizeof(struct tcm_qla2xxx_nacl),
1835         /*
1836          * XXX: Limit assumes single page per scatter-gather-list entry.
1837          * Current maximum is ~4.9 MB per se_cmd->t_data_sg with PAGE_SIZE=4096
1838          */
1839         .max_data_sg_nents              = 1200,
1840         .tpg_get_wwn                    = tcm_qla2xxx_get_fabric_wwn,
1841         .tpg_get_tag                    = tcm_qla2xxx_get_tag,
1842         .tpg_check_demo_mode            = tcm_qla2xxx_check_demo_mode,
1843         .tpg_check_demo_mode_cache      = tcm_qla2xxx_check_demo_mode_cache,
1844         .tpg_check_demo_mode_write_protect =
1845                                         tcm_qla2xxx_check_demo_write_protect,
1846         .tpg_check_prod_mode_write_protect =
1847                                         tcm_qla2xxx_check_prod_write_protect,
1848         .tpg_check_prot_fabric_only     = tcm_qla2xxx_check_prot_fabric_only,
1849         .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,
1850         .tpg_get_inst_index             = tcm_qla2xxx_tpg_get_inst_index,
1851         .check_stop_free                = tcm_qla2xxx_check_stop_free,
1852         .release_cmd                    = tcm_qla2xxx_release_cmd,
1853         .close_session                  = tcm_qla2xxx_close_session,
1854         .sess_get_index                 = tcm_qla2xxx_sess_get_index,
1855         .sess_get_initiator_sid         = NULL,
1856         .write_pending                  = tcm_qla2xxx_write_pending,
1857         .set_default_node_attributes    = tcm_qla2xxx_set_default_node_attrs,
1858         .get_cmd_state                  = tcm_qla2xxx_get_cmd_state,
1859         .queue_data_in                  = tcm_qla2xxx_queue_data_in,
1860         .queue_status                   = tcm_qla2xxx_queue_status,
1861         .queue_tm_rsp                   = tcm_qla2xxx_queue_tm_rsp,
1862         .aborted_task                   = tcm_qla2xxx_aborted_task,
1863         /*
1864          * Setup function pointers for generic logic in
1865          * target_core_fabric_configfs.c
1866          */
1867         .fabric_make_wwn                = tcm_qla2xxx_make_lport,
1868         .fabric_drop_wwn                = tcm_qla2xxx_drop_lport,
1869         .fabric_make_tpg                = tcm_qla2xxx_make_tpg,
1870         .fabric_drop_tpg                = tcm_qla2xxx_drop_tpg,
1871         .fabric_init_nodeacl            = tcm_qla2xxx_init_nodeacl,
1872
1873         .tfc_wwn_attrs                  = tcm_qla2xxx_wwn_attrs,
1874         .tfc_tpg_base_attrs             = tcm_qla2xxx_tpg_attrs,
1875         .tfc_tpg_attrib_attrs           = tcm_qla2xxx_tpg_attrib_attrs,
1876 };
1877
1878 static const struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = {
1879         .module                         = THIS_MODULE,
1880         .fabric_name                    = "qla2xxx_npiv",
1881         .node_acl_size                  = sizeof(struct tcm_qla2xxx_nacl),
1882         .tpg_get_wwn                    = tcm_qla2xxx_get_fabric_wwn,
1883         .tpg_get_tag                    = tcm_qla2xxx_get_tag,
1884         .tpg_check_demo_mode            = tcm_qla2xxx_check_demo_mode,
1885         .tpg_check_demo_mode_cache      = tcm_qla2xxx_check_demo_mode_cache,
1886         .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_demo_mode,
1887         .tpg_check_prod_mode_write_protect =
1888             tcm_qla2xxx_check_prod_write_protect,
1889         .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,
1890         .tpg_get_inst_index             = tcm_qla2xxx_tpg_get_inst_index,
1891         .check_stop_free                = tcm_qla2xxx_check_stop_free,
1892         .release_cmd                    = tcm_qla2xxx_release_cmd,
1893         .close_session                  = tcm_qla2xxx_close_session,
1894         .sess_get_index                 = tcm_qla2xxx_sess_get_index,
1895         .sess_get_initiator_sid         = NULL,
1896         .write_pending                  = tcm_qla2xxx_write_pending,
1897         .set_default_node_attributes    = tcm_qla2xxx_set_default_node_attrs,
1898         .get_cmd_state                  = tcm_qla2xxx_get_cmd_state,
1899         .queue_data_in                  = tcm_qla2xxx_queue_data_in,
1900         .queue_status                   = tcm_qla2xxx_queue_status,
1901         .queue_tm_rsp                   = tcm_qla2xxx_queue_tm_rsp,
1902         .aborted_task                   = tcm_qla2xxx_aborted_task,
1903         /*
1904          * Setup function pointers for generic logic in
1905          * target_core_fabric_configfs.c
1906          */
1907         .fabric_make_wwn                = tcm_qla2xxx_npiv_make_lport,
1908         .fabric_drop_wwn                = tcm_qla2xxx_npiv_drop_lport,
1909         .fabric_make_tpg                = tcm_qla2xxx_npiv_make_tpg,
1910         .fabric_drop_tpg                = tcm_qla2xxx_drop_tpg,
1911         .fabric_init_nodeacl            = tcm_qla2xxx_init_nodeacl,
1912
1913         .tfc_wwn_attrs                  = tcm_qla2xxx_wwn_attrs,
1914         .tfc_tpg_base_attrs             = tcm_qla2xxx_npiv_tpg_attrs,
1915 };
1916
1917 static int tcm_qla2xxx_register_configfs(void)
1918 {
1919         int ret;
1920
1921         pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on %s\n",
1922             QLA2XXX_VERSION, utsname()->sysname,
1923             utsname()->machine, utsname()->release);
1924
1925         ret = target_register_template(&tcm_qla2xxx_ops);
1926         if (ret)
1927                 return ret;
1928
1929         ret = target_register_template(&tcm_qla2xxx_npiv_ops);
1930         if (ret)
1931                 goto out_fabric;
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         return 0;
1941
1942 out_fabric_npiv:
1943         target_unregister_template(&tcm_qla2xxx_npiv_ops);
1944 out_fabric:
1945         target_unregister_template(&tcm_qla2xxx_ops);
1946         return ret;
1947 }
1948
1949 static void tcm_qla2xxx_deregister_configfs(void)
1950 {
1951         destroy_workqueue(tcm_qla2xxx_free_wq);
1952
1953         target_unregister_template(&tcm_qla2xxx_ops);
1954         target_unregister_template(&tcm_qla2xxx_npiv_ops);
1955 }
1956
1957 static int __init tcm_qla2xxx_init(void)
1958 {
1959         int ret;
1960
1961         ret = tcm_qla2xxx_register_configfs();
1962         if (ret < 0)
1963                 return ret;
1964
1965         return 0;
1966 }
1967
1968 static void __exit tcm_qla2xxx_exit(void)
1969 {
1970         tcm_qla2xxx_deregister_configfs();
1971 }
1972
1973 MODULE_DESCRIPTION("TCM QLA24XX+ series NPIV enabled fabric driver");
1974 MODULE_LICENSE("GPL");
1975 module_init(tcm_qla2xxx_init);
1976 module_exit(tcm_qla2xxx_exit);