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, "%d\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                 qlt_stop_phase2(vha->vha_tgt.qla_tgt);
 953         }
 954
 955         return count;
 956 }
 957
 958 static ssize_t tcm_qla2xxx_tpg_dynamic_sessions_show(struct config_item *item,
 959                 char *page)
 960 {
 961         return target_show_dynamic_sessions(to_tpg(item), page);
 962 }
 963
 964 static ssize_t tcm_qla2xxx_tpg_fabric_prot_type_store(struct config_item *item,
 965                 const char *page, size_t count)
 966 {
 967         struct se_portal_group *se_tpg = to_tpg(item);
 968         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 969                                 struct tcm_qla2xxx_tpg, se_tpg);
 970         unsigned long val;
 971         int ret = kstrtoul(page, 0, &val);
 972
 973         if (ret) {
 974                 pr_err("kstrtoul() returned %d for fabric_prot_type\n", ret);
 975                 return ret;
 976         }
 977         if (val != 0 && val != 1 && val != 3) {
 978                 pr_err("Invalid qla2xxx fabric_prot_type: %lu\n", val);
 979                 return -EINVAL;
 980         }
 981         tpg->tpg_attrib.fabric_prot_type = val;
 982
 983         return count;
 984 }
 985
 986 static ssize_t tcm_qla2xxx_tpg_fabric_prot_type_show(struct config_item *item,
 987                 char *page)
 988 {
 989         struct se_portal_group *se_tpg = to_tpg(item);
 990         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 991                                 struct tcm_qla2xxx_tpg, se_tpg);
 992
 993         return sprintf(page, "%d\n", tpg->tpg_attrib.fabric_prot_type);
 994 }
 995
 996 CONFIGFS_ATTR(tcm_qla2xxx_tpg_, enable);
 997 CONFIGFS_ATTR_RO(tcm_qla2xxx_tpg_, dynamic_sessions);
 998 CONFIGFS_ATTR(tcm_qla2xxx_tpg_, fabric_prot_type);
 999
1000 static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = {
1001         &tcm_qla2xxx_tpg_attr_enable,
1002         &tcm_qla2xxx_tpg_attr_dynamic_sessions,
1003         &tcm_qla2xxx_tpg_attr_fabric_prot_type,
1004         NULL,
1005 };
1006
1007 static struct se_portal_group *tcm_qla2xxx_make_tpg(struct se_wwn *wwn,
1008                                                     const char *name)
1009 {
1010         struct tcm_qla2xxx_lport *lport = container_of(wwn,
1011                         struct tcm_qla2xxx_lport, lport_wwn);
1012         struct tcm_qla2xxx_tpg *tpg;
1013         unsigned long tpgt;
1014         int ret;
1015
1016         if (strstr(name, "tpgt_") != name)
1017                 return ERR_PTR(-EINVAL);
1018         if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
1019                 return ERR_PTR(-EINVAL);
1020
1021         if ((tpgt != 1)) {
1022                 pr_err("In non NPIV mode, a single TPG=1 is used for HW port mappings\n");
1023                 return ERR_PTR(-ENOSYS);
1024         }
1025
1026         tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
1027         if (!tpg) {
1028                 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1029                 return ERR_PTR(-ENOMEM);
1030         }
1031         tpg->lport = lport;
1032         tpg->lport_tpgt = tpgt;
1033         /*
1034          * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
1035          * NodeACLs
1036          */
1037         tpg->tpg_attrib.generate_node_acls = 1;
1038         tpg->tpg_attrib.demo_mode_write_protect = 1;
1039         tpg->tpg_attrib.cache_dynamic_acls = 1;
1040         tpg->tpg_attrib.demo_mode_login_only = 1;
1041         tpg->tpg_attrib.jam_host = 0;
1042
1043         ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP);
1044         if (ret < 0) {
1045                 kfree(tpg);
1046                 return NULL;
1047         }
1048
1049         lport->tpg_1 = tpg;
1050
1051         return &tpg->se_tpg;
1052 }
1053
1054 static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg)
1055 {
1056         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1057                         struct tcm_qla2xxx_tpg, se_tpg);
1058         struct tcm_qla2xxx_lport *lport = tpg->lport;
1059         struct scsi_qla_host *vha = lport->qla_vha;
1060         /*
1061          * Call into qla2x_target.c LLD logic to shutdown the active
1062          * FC Nexuses and disable target mode operation for this qla_hw_data
1063          */
1064         if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stop)
1065                 qlt_stop_phase1(vha->vha_tgt.qla_tgt);
1066
1067         core_tpg_deregister(se_tpg);
1068         /*
1069          * Clear local TPG=1 pointer for non NPIV mode.
1070          */
1071         lport->tpg_1 = NULL;
1072         kfree(tpg);
1073 }
1074
1075 static ssize_t tcm_qla2xxx_npiv_tpg_enable_show(struct config_item *item,
1076                 char *page)
1077 {
1078         return tcm_qla2xxx_tpg_enable_show(item, page);
1079 }
1080
1081 static ssize_t tcm_qla2xxx_npiv_tpg_enable_store(struct config_item *item,
1082                 const char *page, size_t count)
1083 {
1084         struct se_portal_group *se_tpg = to_tpg(item);
1085         struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
1086         struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
1087                         struct tcm_qla2xxx_lport, lport_wwn);
1088         struct scsi_qla_host *vha = lport->qla_vha;
1089         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1090                         struct tcm_qla2xxx_tpg, se_tpg);
1091         unsigned long op;
1092         int rc;
1093
1094         rc = kstrtoul(page, 0, &op);
1095         if (rc < 0) {
1096                 pr_err("kstrtoul() returned %d\n", rc);
1097                 return -EINVAL;
1098         }
1099         if ((op != 1) && (op != 0)) {
1100                 pr_err("Illegal value for tpg_enable: %lu\n", op);
1101                 return -EINVAL;
1102         }
1103         if (op) {
1104                 if (atomic_read(&tpg->lport_tpg_enabled))
1105                         return -EEXIST;
1106
1107                 atomic_set(&tpg->lport_tpg_enabled, 1);
1108                 qlt_enable_vha(vha);
1109         } else {
1110                 if (!atomic_read(&tpg->lport_tpg_enabled))
1111                         return count;
1112
1113                 atomic_set(&tpg->lport_tpg_enabled, 0);
1114                 qlt_stop_phase1(vha->vha_tgt.qla_tgt);
1115                 qlt_stop_phase2(vha->vha_tgt.qla_tgt);
1116         }
1117
1118         return count;
1119 }
1120
1121 CONFIGFS_ATTR(tcm_qla2xxx_npiv_tpg_, enable);
1122
1123 static struct configfs_attribute *tcm_qla2xxx_npiv_tpg_attrs[] = {
1124         &tcm_qla2xxx_npiv_tpg_attr_enable,
1125         NULL,
1126 };
1127
1128 static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg(struct se_wwn *wwn,
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(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP);
1160         if (ret < 0) {
1161                 kfree(tpg);
1162                 return NULL;
1163         }
1164         lport->tpg_1 = tpg;
1165         return &tpg->se_tpg;
1166 }
1167
1168 /*
1169  * Expected to be called with struct qla_hw_data->tgt.sess_lock held
1170  */
1171 static struct fc_port *tcm_qla2xxx_find_sess_by_s_id(scsi_qla_host_t *vha,
1172                                                      const be_id_t s_id)
1173 {
1174         struct tcm_qla2xxx_lport *lport;
1175         struct se_node_acl *se_nacl;
1176         struct tcm_qla2xxx_nacl *nacl;
1177         u32 key;
1178
1179         lport = vha->vha_tgt.target_lport_ptr;
1180         if (!lport) {
1181                 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1182                 dump_stack();
1183                 return NULL;
1184         }
1185
1186         key = sid_to_key(s_id);
1187         pr_debug("find_sess_by_s_id: 0x%06x\n", key);
1188
1189         se_nacl = btree_lookup32(&lport->lport_fcport_map, key);
1190         if (!se_nacl) {
1191                 pr_debug("Unable to locate s_id: 0x%06x\n", key);
1192                 return NULL;
1193         }
1194         pr_debug("find_sess_by_s_id: located se_nacl: %p, initiatorname: %s\n",
1195             se_nacl, se_nacl->initiatorname);
1196
1197         nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1198         if (!nacl->fc_port) {
1199                 pr_err("Unable to locate struct fc_port\n");
1200                 return NULL;
1201         }
1202
1203         return nacl->fc_port;
1204 }
1205
1206 /*
1207  * Expected to be called with struct qla_hw_data->tgt.sess_lock held
1208  */
1209 static void tcm_qla2xxx_set_sess_by_s_id(
1210         struct tcm_qla2xxx_lport *lport,
1211         struct se_node_acl *new_se_nacl,
1212         struct tcm_qla2xxx_nacl *nacl,
1213         struct se_session *se_sess,
1214         struct fc_port *fc_port,
1215         be_id_t s_id)
1216 {
1217         u32 key;
1218         void *slot;
1219         int rc;
1220
1221         key = sid_to_key(s_id);
1222         pr_debug("set_sess_by_s_id: %06x\n", key);
1223
1224         slot = btree_lookup32(&lport->lport_fcport_map, key);
1225         if (!slot) {
1226                 if (new_se_nacl) {
1227                         pr_debug("Setting up new fc_port entry to new_se_nacl\n");
1228                         nacl->nport_id = key;
1229                         rc = btree_insert32(&lport->lport_fcport_map, key,
1230                                         new_se_nacl, GFP_ATOMIC);
1231                         if (rc)
1232                                 printk(KERN_ERR "Unable to insert s_id into fcport_map: %06x\n",
1233                                     (int)key);
1234                 } else {
1235                         pr_debug("Wiping nonexisting fc_port entry\n");
1236                 }
1237
1238                 fc_port->se_sess = se_sess;
1239                 nacl->fc_port = fc_port;
1240                 return;
1241         }
1242
1243         if (nacl->fc_port) {
1244                 if (new_se_nacl == NULL) {
1245                         pr_debug("Clearing existing nacl->fc_port and fc_port entry\n");
1246                         btree_remove32(&lport->lport_fcport_map, key);
1247                         nacl->fc_port = NULL;
1248                         return;
1249                 }
1250                 pr_debug("Replacing existing nacl->fc_port and fc_port entry\n");
1251                 btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1252                 fc_port->se_sess = se_sess;
1253                 nacl->fc_port = fc_port;
1254                 return;
1255         }
1256
1257         if (new_se_nacl == NULL) {
1258                 pr_debug("Clearing existing fc_port entry\n");
1259                 btree_remove32(&lport->lport_fcport_map, key);
1260                 return;
1261         }
1262
1263         pr_debug("Replacing existing fc_port entry w/o active nacl->fc_port\n");
1264         btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1265         fc_port->se_sess = se_sess;
1266         nacl->fc_port = fc_port;
1267
1268         pr_debug("Setup nacl->fc_port %p by s_id for se_nacl: %p, initiatorname: %s\n",
1269             nacl->fc_port, new_se_nacl, new_se_nacl->initiatorname);
1270 }
1271
1272 /*
1273  * Expected to be called with struct qla_hw_data->tgt.sess_lock held
1274  */
1275 static struct fc_port *tcm_qla2xxx_find_sess_by_loop_id(
1276         scsi_qla_host_t *vha,
1277         const uint16_t loop_id)
1278 {
1279         struct tcm_qla2xxx_lport *lport;
1280         struct se_node_acl *se_nacl;
1281         struct tcm_qla2xxx_nacl *nacl;
1282         struct tcm_qla2xxx_fc_loopid *fc_loopid;
1283
1284         lport = vha->vha_tgt.target_lport_ptr;
1285         if (!lport) {
1286                 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1287                 dump_stack();
1288                 return NULL;
1289         }
1290
1291         pr_debug("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1292
1293         fc_loopid = lport->lport_loopid_map + loop_id;
1294         se_nacl = fc_loopid->se_nacl;
1295         if (!se_nacl) {
1296                 pr_debug("Unable to locate se_nacl by loop_id: 0x%04x\n",
1297                     loop_id);
1298                 return NULL;
1299         }
1300
1301         nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1302
1303         if (!nacl->fc_port) {
1304                 pr_err("Unable to locate struct fc_port\n");
1305                 return NULL;
1306         }
1307
1308         return nacl->fc_port;
1309 }
1310
1311 /*
1312  * Expected to be called with struct qla_hw_data->tgt.sess_lock held
1313  */
1314 static void tcm_qla2xxx_set_sess_by_loop_id(
1315         struct tcm_qla2xxx_lport *lport,
1316         struct se_node_acl *new_se_nacl,
1317         struct tcm_qla2xxx_nacl *nacl,
1318         struct se_session *se_sess,
1319         struct fc_port *fc_port,
1320         uint16_t loop_id)
1321 {
1322         struct se_node_acl *saved_nacl;
1323         struct tcm_qla2xxx_fc_loopid *fc_loopid;
1324
1325         pr_debug("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1326
1327         fc_loopid = &((struct tcm_qla2xxx_fc_loopid *)
1328                         lport->lport_loopid_map)[loop_id];
1329
1330         saved_nacl = fc_loopid->se_nacl;
1331         if (!saved_nacl) {
1332                 pr_debug("Setting up new fc_loopid->se_nacl to new_se_nacl\n");
1333                 fc_loopid->se_nacl = new_se_nacl;
1334                 if (fc_port->se_sess != se_sess)
1335                         fc_port->se_sess = se_sess;
1336                 if (nacl->fc_port != fc_port)
1337                         nacl->fc_port = fc_port;
1338                 return;
1339         }
1340
1341         if (nacl->fc_port) {
1342                 if (new_se_nacl == NULL) {
1343                         pr_debug("Clearing nacl->fc_port and fc_loopid->se_nacl\n");
1344                         fc_loopid->se_nacl = NULL;
1345                         nacl->fc_port = NULL;
1346                         return;
1347                 }
1348
1349                 pr_debug("Replacing existing nacl->fc_port and fc_loopid->se_nacl\n");
1350                 fc_loopid->se_nacl = new_se_nacl;
1351                 if (fc_port->se_sess != se_sess)
1352                         fc_port->se_sess = se_sess;
1353                 if (nacl->fc_port != fc_port)
1354                         nacl->fc_port = fc_port;
1355                 return;
1356         }
1357
1358         if (new_se_nacl == NULL) {
1359                 pr_debug("Clearing fc_loopid->se_nacl\n");
1360                 fc_loopid->se_nacl = NULL;
1361                 return;
1362         }
1363
1364         pr_debug("Replacing existing fc_loopid->se_nacl w/o active nacl->fc_port\n");
1365         fc_loopid->se_nacl = new_se_nacl;
1366         if (fc_port->se_sess != se_sess)
1367                 fc_port->se_sess = se_sess;
1368         if (nacl->fc_port != fc_port)
1369                 nacl->fc_port = fc_port;
1370
1371         pr_debug("Setup nacl->fc_port %p by loop_id for se_nacl: %p, initiatorname: %s\n",
1372             nacl->fc_port, new_se_nacl, new_se_nacl->initiatorname);
1373 }
1374
1375 /*
1376  * Should always be called with qla_hw_data->tgt.sess_lock held.
1377  */
1378 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *lport,
1379                 struct tcm_qla2xxx_nacl *nacl, struct fc_port *sess)
1380 {
1381         struct se_session *se_sess = sess->se_sess;
1382
1383         tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess,
1384                                      sess, port_id_to_be_id(sess->d_id));
1385         tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess,
1386                                 sess, sess->loop_id);
1387 }
1388
1389 static void tcm_qla2xxx_free_session(struct fc_port *sess)
1390 {
1391         struct qla_tgt *tgt = sess->tgt;
1392         struct qla_hw_data *ha = tgt->ha;
1393         scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
1394         struct se_session *se_sess;
1395         struct tcm_qla2xxx_lport *lport;
1396
1397         BUG_ON(in_interrupt());
1398
1399         se_sess = sess->se_sess;
1400         if (!se_sess) {
1401                 pr_err("struct fc_port->se_sess is NULL\n");
1402                 dump_stack();
1403                 return;
1404         }
1405
1406         lport = vha->vha_tgt.target_lport_ptr;
1407         if (!lport) {
1408                 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1409                 dump_stack();
1410                 return;
1411         }
1412         target_wait_for_sess_cmds(se_sess);
1413
1414         target_remove_session(se_sess);
1415 }
1416
1417 static int tcm_qla2xxx_session_cb(struct se_portal_group *se_tpg,
1418                                   struct se_session *se_sess, void *p)
1419 {
1420         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1421                                 struct tcm_qla2xxx_tpg, se_tpg);
1422         struct tcm_qla2xxx_lport *lport = tpg->lport;
1423         struct qla_hw_data *ha = lport->qla_vha->hw;
1424         struct se_node_acl *se_nacl = se_sess->se_node_acl;
1425         struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
1426                                 struct tcm_qla2xxx_nacl, se_node_acl);
1427         struct fc_port *qlat_sess = p;
1428         uint16_t loop_id = qlat_sess->loop_id;
1429         unsigned long flags;
1430
1431         /*
1432          * And now setup se_nacl and session pointers into HW lport internal
1433          * mappings for fabric S_ID and LOOP_ID.
1434          */
1435         spin_lock_irqsave(&ha->tgt.sess_lock, flags);
1436         tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl, se_sess, qlat_sess,
1437                                      port_id_to_be_id(qlat_sess->d_id));
1438         tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl,
1439                                         se_sess, qlat_sess, loop_id);
1440         spin_unlock_irqrestore(&ha->tgt.sess_lock, flags);
1441
1442         return 0;
1443 }
1444
1445 /*
1446  * Called via qlt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl()
1447  * to locate struct se_node_acl
1448  */
1449 static int tcm_qla2xxx_check_initiator_node_acl(
1450         scsi_qla_host_t *vha,
1451         unsigned char *fc_wwpn,
1452         struct fc_port *qlat_sess)
1453 {
1454         struct qla_hw_data *ha = vha->hw;
1455         struct tcm_qla2xxx_lport *lport;
1456         struct tcm_qla2xxx_tpg *tpg;
1457         struct se_session *se_sess;
1458         unsigned char port_name[36];
1459         int num_tags = (ha->cur_fw_xcb_count) ? ha->cur_fw_xcb_count :
1460                        TCM_QLA2XXX_DEFAULT_TAGS;
1461
1462         lport = vha->vha_tgt.target_lport_ptr;
1463         if (!lport) {
1464                 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1465                 dump_stack();
1466                 return -EINVAL;
1467         }
1468         /*
1469          * Locate the TPG=1 reference..
1470          */
1471         tpg = lport->tpg_1;
1472         if (!tpg) {
1473                 pr_err("Unable to locate struct tcm_qla2xxx_lport->tpg_1\n");
1474                 return -EINVAL;
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, sizeof(port_name), "%8phC", fc_wwpn);
1482         /*
1483          * Locate our struct se_node_acl either from an explict NodeACL created
1484          * via ConfigFS, or via running in TPG demo mode.
1485          */
1486         se_sess = target_setup_session(&tpg->se_tpg, num_tags,
1487                                        sizeof(struct qla_tgt_cmd),
1488                                        TARGET_PROT_ALL, port_name,
1489                                        qlat_sess, tcm_qla2xxx_session_cb);
1490         if (IS_ERR(se_sess))
1491                 return PTR_ERR(se_sess);
1492
1493         return 0;
1494 }
1495
1496 static void tcm_qla2xxx_update_sess(struct fc_port *sess, port_id_t s_id,
1497                                     uint16_t loop_id, bool conf_compl_supported)
1498 {
1499         struct qla_tgt *tgt = sess->tgt;
1500         struct qla_hw_data *ha = tgt->ha;
1501         scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
1502         struct tcm_qla2xxx_lport *lport = vha->vha_tgt.target_lport_ptr;
1503         struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
1504         struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
1505                         struct tcm_qla2xxx_nacl, se_node_acl);
1506         u32 key;
1507
1508
1509         if (sess->loop_id != loop_id || sess->d_id.b24 != s_id.b24)
1510                 pr_info("Updating session %p from port %8phC loop_id %d -> %d s_id %x:%x:%x -> %x:%x:%x\n",
1511                     sess, sess->port_name,
1512                     sess->loop_id, loop_id, sess->d_id.b.domain,
1513                     sess->d_id.b.area, sess->d_id.b.al_pa, s_id.b.domain,
1514                     s_id.b.area, s_id.b.al_pa);
1515
1516         if (sess->loop_id != loop_id) {
1517                 /*
1518                  * Because we can shuffle loop IDs around and we
1519                  * update different sessions non-atomically, we might
1520                  * have overwritten this session's old loop ID
1521                  * already, and we might end up overwriting some other
1522                  * session that will be updated later.  So we have to
1523                  * be extra careful and we can't warn about those things...
1524                  */
1525                 if (lport->lport_loopid_map[sess->loop_id].se_nacl == se_nacl)
1526                         lport->lport_loopid_map[sess->loop_id].se_nacl = NULL;
1527
1528                 lport->lport_loopid_map[loop_id].se_nacl = se_nacl;
1529
1530                 sess->loop_id = loop_id;
1531         }
1532
1533         if (sess->d_id.b24 != s_id.b24) {
1534                 key = (((u32) sess->d_id.b.domain << 16) |
1535                        ((u32) sess->d_id.b.area   <<  8) |
1536                        ((u32) sess->d_id.b.al_pa));
1537
1538                 if (btree_lookup32(&lport->lport_fcport_map, key))
1539                         WARN(btree_remove32(&lport->lport_fcport_map, key) !=
1540                             se_nacl, "Found wrong se_nacl when updating s_id %x:%x:%x\n",
1541                             sess->d_id.b.domain, sess->d_id.b.area,
1542                             sess->d_id.b.al_pa);
1543                 else
1544                         WARN(1, "No lport_fcport_map entry for s_id %x:%x:%x\n",
1545                              sess->d_id.b.domain, sess->d_id.b.area,
1546                              sess->d_id.b.al_pa);
1547
1548                 key = (((u32) s_id.b.domain << 16) |
1549                        ((u32) s_id.b.area   <<  8) |
1550                        ((u32) s_id.b.al_pa));
1551
1552                 if (btree_lookup32(&lport->lport_fcport_map, key)) {
1553                         WARN(1, "Already have lport_fcport_map entry for s_id %x:%x:%x\n",
1554                              s_id.b.domain, s_id.b.area, s_id.b.al_pa);
1555                         btree_update32(&lport->lport_fcport_map, key, se_nacl);
1556                 } else {
1557                         btree_insert32(&lport->lport_fcport_map, key, se_nacl,
1558                             GFP_ATOMIC);
1559                 }
1560
1561                 sess->d_id = s_id;
1562                 nacl->nport_id = key;
1563         }
1564
1565         sess->conf_compl_supported = conf_compl_supported;
1566
1567 }
1568
1569 /*
1570  * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path.
1571  */
1572 static struct qla_tgt_func_tmpl tcm_qla2xxx_template = {
1573         .find_cmd_by_tag        = tcm_qla2xxx_find_cmd_by_tag,
1574         .handle_cmd             = tcm_qla2xxx_handle_cmd,
1575         .handle_data            = tcm_qla2xxx_handle_data,
1576         .handle_tmr             = tcm_qla2xxx_handle_tmr,
1577         .get_cmd                = tcm_qla2xxx_get_cmd,
1578         .rel_cmd                = tcm_qla2xxx_rel_cmd,
1579         .free_cmd               = tcm_qla2xxx_free_cmd,
1580         .free_mcmd              = tcm_qla2xxx_free_mcmd,
1581         .free_session           = tcm_qla2xxx_free_session,
1582         .update_sess            = tcm_qla2xxx_update_sess,
1583         .check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl,
1584         .find_sess_by_s_id      = tcm_qla2xxx_find_sess_by_s_id,
1585         .find_sess_by_loop_id   = tcm_qla2xxx_find_sess_by_loop_id,
1586         .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map,
1587         .put_sess               = tcm_qla2xxx_put_sess,
1588         .shutdown_sess          = tcm_qla2xxx_shutdown_sess,
1589         .get_dif_tags           = tcm_qla2xxx_dif_tags,
1590         .chk_dif_tags           = tcm_qla2xxx_chk_dif_tags,
1591 };
1592
1593 static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport)
1594 {
1595         int rc;
1596
1597         rc = btree_init32(&lport->lport_fcport_map);
1598         if (rc) {
1599                 pr_err("Unable to initialize lport->lport_fcport_map btree\n");
1600                 return rc;
1601         }
1602
1603         lport->lport_loopid_map =
1604                 vzalloc(array_size(65536,
1605                                    sizeof(struct tcm_qla2xxx_fc_loopid)));
1606         if (!lport->lport_loopid_map) {
1607                 pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n",
1608                     sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1609                 btree_destroy32(&lport->lport_fcport_map);
1610                 return -ENOMEM;
1611         }
1612         pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n",
1613                sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1614         return 0;
1615 }
1616
1617 static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha,
1618                                          void *target_lport_ptr,
1619                                          u64 npiv_wwpn, u64 npiv_wwnn)
1620 {
1621         struct qla_hw_data *ha = vha->hw;
1622         struct tcm_qla2xxx_lport *lport =
1623                         (struct tcm_qla2xxx_lport *)target_lport_ptr;
1624         /*
1625          * Setup tgt_ops, local pointer to vha and target_lport_ptr
1626          */
1627         ha->tgt.tgt_ops = &tcm_qla2xxx_template;
1628         vha->vha_tgt.target_lport_ptr = target_lport_ptr;
1629         lport->qla_vha = vha;
1630
1631         return 0;
1632 }
1633
1634 static struct se_wwn *tcm_qla2xxx_make_lport(
1635         struct target_fabric_configfs *tf,
1636         struct config_group *group,
1637         const char *name)
1638 {
1639         struct tcm_qla2xxx_lport *lport;
1640         u64 wwpn;
1641         int ret = -ENODEV;
1642
1643         if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0)
1644                 return ERR_PTR(-EINVAL);
1645
1646         lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1647         if (!lport) {
1648                 pr_err("Unable to allocate struct tcm_qla2xxx_lport\n");
1649                 return ERR_PTR(-ENOMEM);
1650         }
1651         lport->lport_wwpn = wwpn;
1652         tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN,
1653                                 wwpn);
1654         sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) wwpn);
1655
1656         ret = tcm_qla2xxx_init_lport(lport);
1657         if (ret != 0)
1658                 goto out;
1659
1660         ret = qlt_lport_register(lport, wwpn, 0, 0,
1661                                  tcm_qla2xxx_lport_register_cb);
1662         if (ret != 0)
1663                 goto out_lport;
1664
1665         return &lport->lport_wwn;
1666 out_lport:
1667         vfree(lport->lport_loopid_map);
1668         btree_destroy32(&lport->lport_fcport_map);
1669 out:
1670         kfree(lport);
1671         return ERR_PTR(ret);
1672 }
1673
1674 static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn)
1675 {
1676         struct tcm_qla2xxx_lport *lport = container_of(wwn,
1677                         struct tcm_qla2xxx_lport, lport_wwn);
1678         struct scsi_qla_host *vha = lport->qla_vha;
1679         struct se_node_acl *node;
1680         u32 key = 0;
1681
1682         /*
1683          * Call into qla2x_target.c LLD logic to complete the
1684          * shutdown of struct qla_tgt after the call to
1685          * qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above..
1686          */
1687         if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stopped)
1688                 qlt_stop_phase2(vha->vha_tgt.qla_tgt);
1689
1690         qlt_lport_deregister(vha);
1691
1692         vfree(lport->lport_loopid_map);
1693         btree_for_each_safe32(&lport->lport_fcport_map, key, node)
1694                 btree_remove32(&lport->lport_fcport_map, key);
1695         btree_destroy32(&lport->lport_fcport_map);
1696         kfree(lport);
1697 }
1698
1699 static int tcm_qla2xxx_lport_register_npiv_cb(struct scsi_qla_host *base_vha,
1700                                               void *target_lport_ptr,
1701                                               u64 npiv_wwpn, u64 npiv_wwnn)
1702 {
1703         struct fc_vport *vport;
1704         struct Scsi_Host *sh = base_vha->host;
1705         struct scsi_qla_host *npiv_vha;
1706         struct tcm_qla2xxx_lport *lport =
1707                         (struct tcm_qla2xxx_lport *)target_lport_ptr;
1708         struct tcm_qla2xxx_lport *base_lport =
1709                         (struct tcm_qla2xxx_lport *)base_vha->vha_tgt.target_lport_ptr;
1710         struct fc_vport_identifiers vport_id;
1711
1712         if (qla_ini_mode_enabled(base_vha)) {
1713                 pr_err("qla2xxx base_vha not enabled for target mode\n");
1714                 return -EPERM;
1715         }
1716
1717         if (!base_lport || !base_lport->tpg_1 ||
1718             !atomic_read(&base_lport->tpg_1->lport_tpg_enabled)) {
1719                 pr_err("qla2xxx base_lport or tpg_1 not available\n");
1720                 return -EPERM;
1721         }
1722
1723         memset(&vport_id, 0, sizeof(vport_id));
1724         vport_id.port_name = npiv_wwpn;
1725         vport_id.node_name = npiv_wwnn;
1726         vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR;
1727         vport_id.vport_type = FC_PORTTYPE_NPIV;
1728         vport_id.disable = false;
1729
1730         vport = fc_vport_create(sh, 0, &vport_id);
1731         if (!vport) {
1732                 pr_err("fc_vport_create failed for qla2xxx_npiv\n");
1733                 return -ENODEV;
1734         }
1735         /*
1736          * Setup local pointer to NPIV vhba + target_lport_ptr
1737          */
1738         npiv_vha = (struct scsi_qla_host *)vport->dd_data;
1739         npiv_vha->vha_tgt.target_lport_ptr = target_lport_ptr;
1740         lport->qla_vha = npiv_vha;
1741         scsi_host_get(npiv_vha->host);
1742         return 0;
1743 }
1744
1745
1746 static struct se_wwn *tcm_qla2xxx_npiv_make_lport(
1747         struct target_fabric_configfs *tf,
1748         struct config_group *group,
1749         const char *name)
1750 {
1751         struct tcm_qla2xxx_lport *lport;
1752         u64 phys_wwpn, npiv_wwpn, npiv_wwnn;
1753         char *p, tmp[128];
1754         int ret;
1755
1756         snprintf(tmp, 128, "%s", name);
1757
1758         p = strchr(tmp, '@');
1759         if (!p) {
1760                 pr_err("Unable to locate NPIV '@' separator\n");
1761                 return ERR_PTR(-EINVAL);
1762         }
1763         *p++ = '\0';
1764
1765         if (tcm_qla2xxx_parse_wwn(tmp, &phys_wwpn, 1) < 0)
1766                 return ERR_PTR(-EINVAL);
1767
1768         if (tcm_qla2xxx_npiv_parse_wwn(p, strlen(p)+1,
1769                                        &npiv_wwpn, &npiv_wwnn) < 0)
1770                 return ERR_PTR(-EINVAL);
1771
1772         lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1773         if (!lport) {
1774                 pr_err("Unable to allocate struct tcm_qla2xxx_lport for NPIV\n");
1775                 return ERR_PTR(-ENOMEM);
1776         }
1777         lport->lport_npiv_wwpn = npiv_wwpn;
1778         lport->lport_npiv_wwnn = npiv_wwnn;
1779         sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) npiv_wwpn);
1780
1781         ret = tcm_qla2xxx_init_lport(lport);
1782         if (ret != 0)
1783                 goto out;
1784
1785         ret = qlt_lport_register(lport, phys_wwpn, npiv_wwpn, npiv_wwnn,
1786                                  tcm_qla2xxx_lport_register_npiv_cb);
1787         if (ret != 0)
1788                 goto out_lport;
1789
1790         return &lport->lport_wwn;
1791 out_lport:
1792         vfree(lport->lport_loopid_map);
1793         btree_destroy32(&lport->lport_fcport_map);
1794 out:
1795         kfree(lport);
1796         return ERR_PTR(ret);
1797 }
1798
1799 static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn)
1800 {
1801         struct tcm_qla2xxx_lport *lport = container_of(wwn,
1802                         struct tcm_qla2xxx_lport, lport_wwn);
1803         struct scsi_qla_host *npiv_vha = lport->qla_vha;
1804         struct qla_hw_data *ha = npiv_vha->hw;
1805         scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
1806
1807         scsi_host_put(npiv_vha->host);
1808         /*
1809          * Notify libfc that we want to release the vha->fc_vport
1810          */
1811         fc_vport_terminate(npiv_vha->fc_vport);
1812         scsi_host_put(base_vha->host);
1813         kfree(lport);
1814 }
1815
1816
1817 static ssize_t tcm_qla2xxx_wwn_version_show(struct config_item *item,
1818                 char *page)
1819 {
1820         return sprintf(page,
1821             "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s on %s\n",
1822             QLA2XXX_VERSION, utsname()->sysname,
1823             utsname()->machine, utsname()->release);
1824 }
1825
1826 CONFIGFS_ATTR_RO(tcm_qla2xxx_wwn_, version);
1827
1828 static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = {
1829         &tcm_qla2xxx_wwn_attr_version,
1830         NULL,
1831 };
1832
1833 static const struct target_core_fabric_ops tcm_qla2xxx_ops = {
1834         .module                         = THIS_MODULE,
1835         .fabric_name                    = "qla2xxx",
1836         .node_acl_size                  = sizeof(struct tcm_qla2xxx_nacl),
1837         /*
1838          * XXX: Limit assumes single page per scatter-gather-list entry.
1839          * Current maximum is ~4.9 MB per se_cmd->t_data_sg with PAGE_SIZE=4096
1840          */
1841         .max_data_sg_nents              = 1200,
1842         .tpg_get_wwn                    = tcm_qla2xxx_get_fabric_wwn,
1843         .tpg_get_tag                    = tcm_qla2xxx_get_tag,
1844         .tpg_check_demo_mode            = tcm_qla2xxx_check_demo_mode,
1845         .tpg_check_demo_mode_cache      = tcm_qla2xxx_check_demo_mode_cache,
1846         .tpg_check_demo_mode_write_protect =
1847                                         tcm_qla2xxx_check_demo_write_protect,
1848         .tpg_check_prod_mode_write_protect =
1849                                         tcm_qla2xxx_check_prod_write_protect,
1850         .tpg_check_prot_fabric_only     = tcm_qla2xxx_check_prot_fabric_only,
1851         .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,
1852         .tpg_get_inst_index             = tcm_qla2xxx_tpg_get_inst_index,
1853         .check_stop_free                = tcm_qla2xxx_check_stop_free,
1854         .release_cmd                    = tcm_qla2xxx_release_cmd,
1855         .close_session                  = tcm_qla2xxx_close_session,
1856         .sess_get_index                 = tcm_qla2xxx_sess_get_index,
1857         .sess_get_initiator_sid         = NULL,
1858         .write_pending                  = tcm_qla2xxx_write_pending,
1859         .set_default_node_attributes    = tcm_qla2xxx_set_default_node_attrs,
1860         .get_cmd_state                  = tcm_qla2xxx_get_cmd_state,
1861         .queue_data_in                  = tcm_qla2xxx_queue_data_in,
1862         .queue_status                   = tcm_qla2xxx_queue_status,
1863         .queue_tm_rsp                   = tcm_qla2xxx_queue_tm_rsp,
1864         .aborted_task                   = tcm_qla2xxx_aborted_task,
1865         /*
1866          * Setup function pointers for generic logic in
1867          * target_core_fabric_configfs.c
1868          */
1869         .fabric_make_wwn                = tcm_qla2xxx_make_lport,
1870         .fabric_drop_wwn                = tcm_qla2xxx_drop_lport,
1871         .fabric_make_tpg                = tcm_qla2xxx_make_tpg,
1872         .fabric_drop_tpg                = tcm_qla2xxx_drop_tpg,
1873         .fabric_init_nodeacl            = tcm_qla2xxx_init_nodeacl,
1874
1875         .tfc_wwn_attrs                  = tcm_qla2xxx_wwn_attrs,
1876         .tfc_tpg_base_attrs             = tcm_qla2xxx_tpg_attrs,
1877         .tfc_tpg_attrib_attrs           = tcm_qla2xxx_tpg_attrib_attrs,
1878 };
1879
1880 static const struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = {
1881         .module                         = THIS_MODULE,
1882         .fabric_name                    = "qla2xxx_npiv",
1883         .node_acl_size                  = sizeof(struct tcm_qla2xxx_nacl),
1884         .tpg_get_wwn                    = tcm_qla2xxx_get_fabric_wwn,
1885         .tpg_get_tag                    = tcm_qla2xxx_get_tag,
1886         .tpg_check_demo_mode            = tcm_qla2xxx_check_demo_mode,
1887         .tpg_check_demo_mode_cache      = tcm_qla2xxx_check_demo_mode_cache,
1888         .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_demo_mode,
1889         .tpg_check_prod_mode_write_protect =
1890             tcm_qla2xxx_check_prod_write_protect,
1891         .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,
1892         .tpg_get_inst_index             = tcm_qla2xxx_tpg_get_inst_index,
1893         .check_stop_free                = tcm_qla2xxx_check_stop_free,
1894         .release_cmd                    = tcm_qla2xxx_release_cmd,
1895         .close_session                  = tcm_qla2xxx_close_session,
1896         .sess_get_index                 = tcm_qla2xxx_sess_get_index,
1897         .sess_get_initiator_sid         = NULL,
1898         .write_pending                  = tcm_qla2xxx_write_pending,
1899         .set_default_node_attributes    = tcm_qla2xxx_set_default_node_attrs,
1900         .get_cmd_state                  = tcm_qla2xxx_get_cmd_state,
1901         .queue_data_in                  = tcm_qla2xxx_queue_data_in,
1902         .queue_status                   = tcm_qla2xxx_queue_status,
1903         .queue_tm_rsp                   = tcm_qla2xxx_queue_tm_rsp,
1904         .aborted_task                   = tcm_qla2xxx_aborted_task,
1905         /*
1906          * Setup function pointers for generic logic in
1907          * target_core_fabric_configfs.c
1908          */
1909         .fabric_make_wwn                = tcm_qla2xxx_npiv_make_lport,
1910         .fabric_drop_wwn                = tcm_qla2xxx_npiv_drop_lport,
1911         .fabric_make_tpg                = tcm_qla2xxx_npiv_make_tpg,
1912         .fabric_drop_tpg                = tcm_qla2xxx_drop_tpg,
1913         .fabric_init_nodeacl            = tcm_qla2xxx_init_nodeacl,
1914
1915         .tfc_wwn_attrs                  = tcm_qla2xxx_wwn_attrs,
1916         .tfc_tpg_base_attrs             = tcm_qla2xxx_npiv_tpg_attrs,
1917 };
1918
1919 static int tcm_qla2xxx_register_configfs(void)
1920 {
1921         int ret;
1922
1923         pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on %s\n",
1924             QLA2XXX_VERSION, utsname()->sysname,
1925             utsname()->machine, utsname()->release);
1926
1927         ret = target_register_template(&tcm_qla2xxx_ops);
1928         if (ret)
1929                 return ret;
1930
1931         ret = target_register_template(&tcm_qla2xxx_npiv_ops);
1932         if (ret)
1933                 goto out_fabric;
1934
1935         tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free",
1936                                                 WQ_MEM_RECLAIM, 0);
1937         if (!tcm_qla2xxx_free_wq) {
1938                 ret = -ENOMEM;
1939                 goto out_fabric_npiv;
1940         }
1941
1942         return 0;
1943
1944 out_fabric_npiv:
1945         target_unregister_template(&tcm_qla2xxx_npiv_ops);
1946 out_fabric:
1947         target_unregister_template(&tcm_qla2xxx_ops);
1948         return ret;
1949 }
1950
1951 static void tcm_qla2xxx_deregister_configfs(void)
1952 {
1953         destroy_workqueue(tcm_qla2xxx_free_wq);
1954
1955         target_unregister_template(&tcm_qla2xxx_ops);
1956         target_unregister_template(&tcm_qla2xxx_npiv_ops);
1957 }
1958
1959 static int __init tcm_qla2xxx_init(void)
1960 {
1961         int ret;
1962
1963         BUILD_BUG_ON(sizeof(struct abts_recv_from_24xx) != 64);
1964         BUILD_BUG_ON(sizeof(struct abts_resp_from_24xx_fw) != 64);
1965         BUILD_BUG_ON(sizeof(struct atio7_fcp_cmnd) != 32);
1966         BUILD_BUG_ON(sizeof(struct atio_from_isp) != 64);
1967         BUILD_BUG_ON(sizeof(struct ba_acc_le) != 12);
1968         BUILD_BUG_ON(sizeof(struct ba_rjt_le) != 4);
1969         BUILD_BUG_ON(sizeof(struct ctio7_from_24xx) != 64);
1970         BUILD_BUG_ON(sizeof(struct ctio7_to_24xx) != 64);
1971         BUILD_BUG_ON(sizeof(struct ctio_crc2_to_fw) != 64);
1972         BUILD_BUG_ON(sizeof(struct ctio_crc_from_fw) != 64);
1973         BUILD_BUG_ON(sizeof(struct ctio_to_2xxx) != 64);
1974         BUILD_BUG_ON(sizeof(struct fcp_hdr) != 24);
1975         BUILD_BUG_ON(sizeof(struct fcp_hdr_le) != 24);
1976         BUILD_BUG_ON(sizeof(struct nack_to_isp) != 64);
1977
1978         ret = tcm_qla2xxx_register_configfs();
1979         if (ret < 0)
1980                 return ret;
1981
1982         return 0;
1983 }
1984
1985 static void __exit tcm_qla2xxx_exit(void)
1986 {
1987         tcm_qla2xxx_deregister_configfs();
1988 }
1989
1990 MODULE_DESCRIPTION("TCM QLA24XX+ series NPIV enabled fabric driver");
1991 MODULE_LICENSE("GPL");
1992 module_init(tcm_qla2xxx_init);
1993 module_exit(tcm_qla2xxx_exit);